diff --git a/Submodules/UIKit/CMakeLists.txt b/Submodules/UIKit/CMakeLists.txt index 06f28b9..bfac5c7 100644 --- a/Submodules/UIKit/CMakeLists.txt +++ b/Submodules/UIKit/CMakeLists.txt @@ -5,6 +5,7 @@ add_definitions( ) add_library(UIKit + lib/tools/Logger.cpp lib/CABasicAnimation.cpp lib/CABasicAnimationPrototype.cpp lib/CABlurLayer.cpp @@ -99,9 +100,10 @@ if (APPLE) ) endif () elseif (PLATFORM_SWITCH) - target_sources(UIKit PRIVATE + target_sources(UIKit PUBLIC lib/platforms/SkiaCtx_sdlBase.cpp lib/platforms/switch/SkiaCtx_switch.cpp + lib/platforms/switch/switch_wrapper.c ) find_package(PkgConfig REQUIRED) @@ -151,4 +153,4 @@ if (APPLE) list(APPEND platform_libs "-framework Foundation" "-framework VideoToolbox" "-framework AVKit" "-framework MetalKit" "-framework CoreText") endif () -target_link_libraries(UIKit PUBLIC ${platform_libs}) \ No newline at end of file +target_link_libraries(UIKit PUBLIC fmt ${platform_libs}) \ No newline at end of file diff --git a/Submodules/UIKit/include/UIKit.h b/Submodules/UIKit/include/UIKit.h index f7466eb..b6ea847 100644 --- a/Submodules/UIKit/include/UIKit.h +++ b/Submodules/UIKit/include/UIKit.h @@ -11,6 +11,7 @@ #include #include #include +#include #include using namespace NXKit::yoga::literals; diff --git a/Submodules/UIKit/include/platforms/switch/SkiaCtx_switch.h b/Submodules/UIKit/include/platforms/switch/SkiaCtx_switch.h index 6165d91..9c432f8 100644 --- a/Submodules/UIKit/include/platforms/switch/SkiaCtx_switch.h +++ b/Submodules/UIKit/include/platforms/switch/SkiaCtx_switch.h @@ -7,14 +7,16 @@ namespace NXKit { -class SkiaCtx_switch: public SkiaCtx_sdlBase { +class SkiaCtx_switch: public SkiaCtx { public: SkiaCtx_switch(); + ~SkiaCtx_switch(); sk_sp getBackbufferSurface() override; // float getScaleFactor() override; sk_sp directContext() override { return context; } + UIUserInterfaceStyle getThemeMode() override { return UIUserInterfaceStyle::light; } virtual void swapBuffers() override; diff --git a/Submodules/UIKit/include/tools/Logger.hpp b/Submodules/UIKit/include/tools/Logger.hpp new file mode 100644 index 0000000..6fc4923 --- /dev/null +++ b/Submodules/UIKit/include/tools/Logger.hpp @@ -0,0 +1,167 @@ +/* + Copyright 2019 natinusala + Copyright 2019 p-sam + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +#pragma once + +#include +#include + +// #include +#include +#include + +namespace NXKit +{ + +enum class LogLevel +{ + LOG_ERROR = 0, + LOG_WARNING, + LOG_INFO, + LOG_DEBUG, + LOG_VERBOSE +}; + +#ifdef PLATFORM_APPLE +#define BRLS_ERROR_COLOR "🔴" +#define BRLS_WARNING_COLOR "🟠" +#define BRLS_INFO_COLOR "🔵" +#define BRLS_DEBUG_COLOR "🟢" +#define BRLS_VERBOSE_COLOR "⚪️" +#else +#define BRLS_ERROR_COLOR "[0;31m" +#define BRLS_WARNING_COLOR "[0;33m" +#define BRLS_INFO_COLOR "[0;34m" +#define BRLS_DEBUG_COLOR "[0;32m" +#define BRLS_VERBOSE_COLOR "[0;37m" +#endif + +#define BRLS_LOG_ERROR(format, ...) brls::Logger::error("{}:{} " format, __FILE__, __LINE__, ##__VA_ARGS__) +#define BRLS_LOG_WARNING(format, ...) brls::Logger::warning("{}:{} " format, __FILE__, __LINE__, ##__VA_ARGS__) +#define BRLS_LOG_INFO(format, ...) brls::Logger::info("{}:{} " format, __FILE__, __LINE__, ##__VA_ARGS__) +#define BRLS_LOG_DEBUG(format, ...) brls::Logger::debug("{}:{} " format, __FILE__, __LINE__, ##__VA_ARGS__) +#define BRLS_LOG_VERBOSE(format, ...) brls::Logger::verbose("{}:{} " format, __FILE__, __LINE__, ##__VA_ARGS__) + +class Logger +{ + public: + using TimePoint = std::chrono::system_clock::time_point; + + static void setLogLevel(LogLevel logLevel); + + static LogLevel getLogLevel(); + + static void setLogOutput(std::FILE *logOut); + + /** + * If sets to true, each log operation will lock a mutex, making the Logger thread-safe. + */ + static void setThreadSafeLogging(bool threadSafeLogging); + + template + inline static void log(LogLevel level, std::string prefix, std::string color, fmt::format_string format, Args&&... args) + { + if (Logger::logLevel < level) + return; + + TimePoint now = std::chrono::system_clock::now(); + uint64_t ms = std::chrono::duration_cast( + now.time_since_epoch()).count() % 1000; +#ifdef PS4 + OrbisDateTime lt{}; + if (sceRtcGetCurrentClockLocalTime) + sceRtcGetCurrentClockLocalTime(<); +#else + std::tm time_tm = fmt::localtime(std::chrono::system_clock::to_time_t(now)); +#endif + std::string log = fmt::format(format, std::forward(args)...); + + std::unique_lock lock; + if (Logger::threadSafeLogging) + lock = std::unique_lock { logMtx }; + + try + { +#ifdef PLATFORM_APPLE + fmt::print(logOut, "{:%H:%M:%S}.{:03d} {} {}\n", time_tm, (int)ms, color, log); +#elif defined(ANDROID) + __android_log_print(6 - (int)level, "borealis", "%02d:%02d:%02d.%03d %s\n", time_tm.tm_hour, time_tm.tm_min, time_tm.tm_sec, (int)ms, log.c_str()); +#elif defined(__PSV__) + sceClibPrintf("%02d:%02d:%02d.%03d\033%s[%s]\033[0m %s\n", time_tm.tm_hour, time_tm.tm_min, time_tm.tm_sec, (int)ms, color.c_str(), prefix.c_str(), log.c_str()); +#elif defined(PS4) + sceKernelDebugOutText(0, fmt::format("{:02d}:{:02d}:{:02d}.{:03d}\033{}[{}]\033[0m {}\n", lt.hour, lt.minute, lt.second, (int)ms, color, prefix, log).c_str()); +#else + fmt::print(logOut, "{:%H:%M:%S}.{:03d}\033{}[{}]\033[0m {}\n", time_tm, (int)ms, color, prefix, log); +#endif + + // logEvent.fire(now, level, log); + } + catch (const std::exception& e) + { + // will be printed after the first fmt::print (so after the log tag) + printf("! Invalid log format string: \"%s\": %s\n", fmt::basic_string_view(format).data(), e.what()); + } + +#ifdef __MINGW32__ + fflush(logOut); +#endif + } + + template + inline static void error(fmt::format_string format, Args&&... args) + { + Logger::log(LogLevel::LOG_ERROR, "ERROR", BRLS_ERROR_COLOR, format, std::forward(args)...); + } + + template + inline static void warning(fmt::format_string format, Args&&... args) + { + Logger::log(LogLevel::LOG_WARNING, "WARNING", BRLS_WARNING_COLOR, format, std::forward(args)...); + } + + template + inline static void info(fmt::format_string format, Args&&... args) + { + Logger::log(LogLevel::LOG_INFO, "INFO", BRLS_INFO_COLOR, format, std::forward(args)...); + } + + template + inline static void debug(fmt::format_string format, Args&&... args) + { + Logger::log(LogLevel::LOG_DEBUG, "DEBUG", BRLS_DEBUG_COLOR, format, std::forward(args)...); + } + + template + inline static void verbose(fmt::format_string format, Args&&... args) + { + Logger::log(LogLevel::LOG_VERBOSE, "VERBOSE", BRLS_VERBOSE_COLOR, format, std::forward(args)...); + } + + // static Event* getLogEvent() + // { + // return &logEvent; + // } + + private: + inline static std::mutex logMtx; + inline static bool threadSafeLogging = true; + // inline static Event logEvent; + inline static std::FILE *logOut = stdout; + inline static LogLevel logLevel = LogLevel::LOG_INFO; +}; + +} // namespace brls diff --git a/Submodules/UIKit/lib/UIApplicationMain.cpp b/Submodules/UIKit/lib/UIApplicationMain.cpp index bf66929..edaec13 100644 --- a/Submodules/UIKit/lib/UIApplicationMain.cpp +++ b/Submodules/UIKit/lib/UIApplicationMain.cpp @@ -54,6 +54,7 @@ bool applicationRunLoop() { keyWindow->setFrame({ NXPoint::zero, SkiaCtx::_main->getSize() } ); // }); + UITraitCollection::setCurrent(keyWindow->traitCollection()); keyWindow->layer()->presentationOrSelf()->skiaRender(canvas); canvas->restore(); diff --git a/Submodules/UIKit/lib/platforms/SkiaCtx_sdlBase.cpp b/Submodules/UIKit/lib/platforms/SkiaCtx_sdlBase.cpp index ee97f04..c4b2adc 100644 --- a/Submodules/UIKit/lib/platforms/SkiaCtx_sdlBase.cpp +++ b/Submodules/UIKit/lib/platforms/SkiaCtx_sdlBase.cpp @@ -34,7 +34,11 @@ SkiaCtx_sdlBase::SkiaCtx_sdlBase() flags |= SDL_WINDOW_OPENGL; #endif - window = SDL_CreateWindow("Window", 12, 12, 1280, 720, flags); + window = SDL_CreateWindow("Window", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 1280, 720, flags); + if (!window) { + SDL_GetError(); + } + auto context = SDL_GL_CreateContext(window); SDL_GL_MakeCurrent(window, context); } diff --git a/Submodules/UIKit/lib/platforms/switch/SkiaCtx_switch.cpp b/Submodules/UIKit/lib/platforms/switch/SkiaCtx_switch.cpp index 7a3d26b..fa4ab64 100644 --- a/Submodules/UIKit/lib/platforms/switch/SkiaCtx_switch.cpp +++ b/Submodules/UIKit/lib/platforms/switch/SkiaCtx_switch.cpp @@ -26,118 +26,21 @@ #include #include -using namespace NXKit; - -static EGLDisplay s_display; -static EGLContext s_context; -static EGLSurface s_surface; - -static bool initEgl(NWindow* win) -{ - // Connect to the EGL default display - s_display = eglGetDisplay(EGL_DEFAULT_DISPLAY); - if (!s_display) - { - // LTRACEF("Could not connect to display! error: %d", eglGetError()); - goto _fail0; - } +#include - // Initialize the EGL display connection - eglInitialize(s_display, nullptr, nullptr); - - // Select OpenGL (Core) as the desired graphics API - if (eglBindAPI(EGL_OPENGL_API) == EGL_FALSE) - { - // LTRACEF("Could not set API! error: %d", eglGetError()); - goto _fail1; - } - - // Get an appropriate EGL framebuffer configuration - EGLConfig config; - EGLint numConfigs; - static const EGLint framebufferAttributeList[] = - { - EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT, - EGL_RED_SIZE, 8, - EGL_GREEN_SIZE, 8, - EGL_BLUE_SIZE, 8, - EGL_ALPHA_SIZE, 8, - EGL_DEPTH_SIZE, 24, - EGL_STENCIL_SIZE, 8, - EGL_NONE - }; - eglChooseConfig(s_display, framebufferAttributeList, &config, 1, &numConfigs); - if (numConfigs == 0) - { - // LTRACEF("No config found! error: %d", eglGetError()); - goto _fail1; - } - - // Create an EGL window surface - s_surface = eglCreateWindowSurface(s_display, config, win, nullptr); - if (!s_surface) - { - // LTRACEF("Surface creation failed! error: %d", eglGetError()); - goto _fail1; - } - - // Create an EGL rendering context - static const EGLint contextAttributeList[] = - { - EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR, EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR, - EGL_CONTEXT_MAJOR_VERSION_KHR, 4, - EGL_CONTEXT_MINOR_VERSION_KHR, 3, - EGL_NONE - }; - s_context = eglCreateContext(s_display, config, EGL_NO_CONTEXT, contextAttributeList); - if (!s_context) - { - // LTRACEF("Context creation failed! error: %d", eglGetError()); - goto _fail2; - } - - // Connect the context to the surface - eglMakeCurrent(s_display, s_surface, s_surface, s_context); - return true; - -_fail2: - eglDestroySurface(s_display, s_surface); - s_surface = nullptr; -_fail1: - eglTerminate(s_display); - s_display = nullptr; -_fail0: - return false; +extern "C" { +extern void userAppInit(); +extern void userAppExit(); } -static void deinitEgl() -{ - if (s_display) - { - eglMakeCurrent(s_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); - if (s_context) - { - eglDestroyContext(s_display, s_context); - s_context = nullptr; - } - if (s_surface) - { - eglDestroySurface(s_display, s_surface); - s_surface = nullptr; - } - eglTerminate(s_display); - s_display = nullptr; - } -} +using namespace NXKit; SkiaCtx_switch::SkiaCtx_switch() { - if (!initEgl(nwindowGetDefault())) - exit(1); - - SDL_Init(SDL_INIT_EVERYTHING); - // Uint32 flags = SDL_WINDOW_ALLOW_HIGHDPI | SDL_WINDOW_RESIZABLE; + printf("SDL inited\n"); + + Uint32 flags = SDL_WINDOW_RESIZABLE | SDL_WINDOW_SHOWN | SDL_WINDOW_ALLOW_HIGHDPI | SDL_WINDOW_OPENGL; // SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 4); // SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3); // SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8); @@ -145,21 +48,56 @@ SkiaCtx_switch::SkiaCtx_switch() { // SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 0); // SDL_GL_SetAttribute(SDL_GL_RETAINED_BACKING, 0); // SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE); - - // flags |= SDL_WINDOW_OPENGL; - // window = SDL_CreateWindow("Window", 12, 12, 1280, 720, flags); - // auto context = SDL_GL_CreateContext(window); - // SDL_GL_MakeCurrent(window, context); + + + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3); + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0); + SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8); + SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 0); + SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 0); + SDL_GL_SetAttribute(SDL_GL_RETAINED_BACKING, 0); + SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8); + SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8); + SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8); + SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8); + SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES); + + window = SDL_CreateWindow("Window", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 1280, 720, flags); + + if (!window) { + printf("SDL window failed to create with error: %s\n", SDL_GetError()); + } + + auto context = SDL_GL_CreateContext(window); + SDL_GL_MakeCurrent(window, context); + + printf("SDL window created\n"); SkGraphics::Init(); + + printf("SKIA inited\n"); + + auto eglCtx = eglGetCurrentContext(); + if (!eglCtx) { + printf("EGL context is empty\n"); + } + initContext(); + printf("SKIA context created\n"); + // fontMgr = SkFontMgr_New_Custom_Empty(); } +SkiaCtx_switch::~SkiaCtx_switch() { +} + void SkiaCtx_switch::initContext() { auto interface = GrGLInterfaces::MakeEGL(); - auto ctx = GrDirectContexts::MakeGL(interface); + context = GrDirectContexts::MakeGL(interface); + + // GrGLint buffer; + // interface->fFunctions.fGetIntegerv(GL_FRAMEBUFFER_BINDING, &buffer); } //float SkiaCtx_switch::getScaleFactor() { @@ -175,15 +113,13 @@ sk_sp SkiaCtx_switch::getBackbufferSurface() { GrGLFramebufferInfo framebuffer_info; framebuffer_info.fFormat = GL_RGBA8; framebuffer_info.fFBOID = 0; - auto scaleFactor = getScaleFactor(); - GrBackendRenderTarget target = GrBackendRenderTargets::MakeGL(size.width * scaleFactor, - size.height * scaleFactor, + GrBackendRenderTarget target = GrBackendRenderTargets::MakeGL(size.width, size.height, 0, 8, framebuffer_info); SkSurfaceProps props; - glViewport(0, 0, _size.width * scaleFactor, _size.height * scaleFactor); + glViewport(0, 0, _size.width, _size.height); surface = SkSurfaces::WrapBackendRenderTarget(context.get(), target, kBottomLeft_GrSurfaceOrigin, kRGBA_8888_SkColorType, nullptr, &props); @@ -200,11 +136,13 @@ bool NXKit::platformRunLoop(std::function loop) { } void SkiaCtx_switch::swapBuffers() { - eglSwapBuffers(s_display, s_surface); + SDL_GL_SwapWindow(window); } NXSize SkiaCtx_switch::getSize() { - return { 1280, 720 }; + int w, h; + SDL_GetWindowSize(window, &w, &h); + return { (NXFloat)w, (NXFloat)h }; } float SkiaCtx_switch::getScaleFactor() { diff --git a/Submodules/UIKit/lib/platforms/switch/switch_wrapper.c b/Submodules/UIKit/lib/platforms/switch/switch_wrapper.c new file mode 100644 index 0000000..46cf0b3 --- /dev/null +++ b/Submodules/UIKit/lib/platforms/switch/switch_wrapper.c @@ -0,0 +1,88 @@ +/* + Copyright 2019 natinusala + Copyright 2019 WerWolv + Copyright 2019 p-sam + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +#include +#include +#include + +static int nxlink_sock = -1; + +void userAppInit() +{ + printf("userAppInit\n"); + appletLockExit(); + + // Init network + SocketInitConfig cfg = *(socketGetDefaultInitConfig()); + AppletType at = appletGetAppletType(); + if (at == AppletType_Application || at == AppletType_SystemApplication) + { + cfg.num_bsd_sessions = 12; // default is 3 + cfg.sb_efficiency = 8; // default is 4 + socketInitialize(&cfg); + } + else + { + cfg.num_bsd_sessions = 2; + cfg.sb_efficiency = 1; + socketInitialize(&cfg); + } + +// #ifdef DEBUG + nxlink_sock = nxlinkStdio(); +// #endif + + romfsInit(); + hidsysInitialize(); + inssInitialize(); + plInitialize(PlServiceType_User); + setsysInitialize(); + setInitialize(); + psmInitialize(); + nifmInitialize(NifmServiceType_User); + lblInitialize(); +} + +void userAppExit() +{ + printf("userAppExit\n"); + + // backlight + lblExit(); + // network state + nifmExit(); + // power state + psmExit(); + // system language... + setExit(); + // system theme, system version... + setsysExit(); + // system font + plExit(); + + inssExit(); + hidsysExit(); + romfsExit(); + + if (nxlink_sock != -1) + close(nxlink_sock); + + socketExit(); + + appletUnlockExit(); +} \ No newline at end of file diff --git a/Submodules/UIKit/lib/tools/Logger.cpp b/Submodules/UIKit/lib/tools/Logger.cpp new file mode 100644 index 0000000..548a7d8 --- /dev/null +++ b/Submodules/UIKit/lib/tools/Logger.cpp @@ -0,0 +1,45 @@ +/* + Copyright 2019 natinusala + Copyright 2019 p-sam + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +#include +#include + +#include + +namespace NXKit +{ + +void Logger::setLogLevel(LogLevel newLogLevel) +{ + Logger::logLevel = newLogLevel; +} + +LogLevel Logger::getLogLevel() +{ + return Logger::logLevel; +} + +void Logger::setLogOutput(std::FILE *newLogOut) +{ + Logger::logOut = newLogOut; +} + +void Logger::setThreadSafeLogging(bool newThreadSafeLogging) { + Logger::threadSafeLogging = newThreadSafeLogging; +} + +} // namespace brls diff --git a/Submodules/cmake/toolchain.cmake b/Submodules/cmake/toolchain.cmake index fdf4dd9..0960d5d 100644 --- a/Submodules/cmake/toolchain.cmake +++ b/Submodules/cmake/toolchain.cmake @@ -180,6 +180,7 @@ function(setup_project) # Include Submodules add_subdirectory(${EXTERN_PATH}) add_subdirectory(${EXTERN_PATH}/yoga) + add_subdirectory(${EXTERN_PATH}/fmt) add_subdirectory(${EXTERN_PATH}/UIKit) add_subdirectory(${EXTERN_PATH}/libromfs EXCLUDE_FROM_ALL) diff --git a/Submodules/fmt/.clang-format b/Submodules/fmt/.clang-format new file mode 100644 index 0000000..df55d34 --- /dev/null +++ b/Submodules/fmt/.clang-format @@ -0,0 +1,8 @@ +# Run manually to reformat a file: +# clang-format -i --style=file +Language: Cpp +BasedOnStyle: Google +IndentPPDirectives: AfterHash +IndentCaseLabels: false +AlwaysBreakTemplateDeclarations: false +DerivePointerAlignment: false diff --git a/Submodules/fmt/.github/dependabot.yml b/Submodules/fmt/.github/dependabot.yml new file mode 100644 index 0000000..f74783d --- /dev/null +++ b/Submodules/fmt/.github/dependabot.yml @@ -0,0 +1,8 @@ +version: 2 +updates: + - package-ecosystem: "github-actions" # Necessary to update action hashes. + directory: "/" + schedule: + interval: "monthly" + # Allow up to 3 opened pull requests for github-actions versions. + open-pull-requests-limit: 3 diff --git a/Submodules/fmt/.github/issue_template.md b/Submodules/fmt/.github/issue_template.md new file mode 100644 index 0000000..8e39c5b --- /dev/null +++ b/Submodules/fmt/.github/issue_template.md @@ -0,0 +1,6 @@ + diff --git a/Submodules/fmt/.github/pull_request_template.md b/Submodules/fmt/.github/pull_request_template.md new file mode 100644 index 0000000..e877413 --- /dev/null +++ b/Submodules/fmt/.github/pull_request_template.md @@ -0,0 +1,7 @@ + diff --git a/Submodules/fmt/.github/workflows/cifuzz.yml b/Submodules/fmt/.github/workflows/cifuzz.yml new file mode 100644 index 0000000..56dfae8 --- /dev/null +++ b/Submodules/fmt/.github/workflows/cifuzz.yml @@ -0,0 +1,30 @@ +name: CIFuzz +on: [pull_request] + +permissions: + contents: read + +jobs: + Fuzzing: + runs-on: ubuntu-latest + steps: + - name: Build fuzzers + id: build + uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@92182553173581f871130c71c71b17f003d47b0a # master + with: + oss-fuzz-project-name: 'fmt' + dry-run: false + language: c++ + - name: Run fuzzers + uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@92182553173581f871130c71c71b17f003d47b0a # master + with: + oss-fuzz-project-name: 'fmt' + fuzz-seconds: 300 + dry-run: false + language: c++ + - name: Upload crash + uses: actions/upload-artifact@65462800fd760344b1a7b4382951275a0abb4808 # v4.3.3 + if: failure() && steps.build.outcome == 'success' + with: + name: artifacts + path: ./out/artifacts diff --git a/Submodules/fmt/.github/workflows/doc.yml b/Submodules/fmt/.github/workflows/doc.yml new file mode 100644 index 0000000..3098d45 --- /dev/null +++ b/Submodules/fmt/.github/workflows/doc.yml @@ -0,0 +1,43 @@ +name: doc + +on: [push, pull_request] + +permissions: + contents: read + +jobs: + build: + # Use Ubuntu 20.04 because doxygen 1.8.13 from Ubuntu 18.04 is broken. + runs-on: ubuntu-20.04 + + steps: + - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4.1.6 + + - name: Add Ubuntu mirrors + run: | + # Github Actions caching proxy is at times unreliable + # see https://github.com/actions/runner-images/issues/7048 + printf 'http://azure.archive.ubuntu.com/ubuntu\tpriority:1\n' | sudo tee /etc/apt/mirrors.txt + curl http://mirrors.ubuntu.com/mirrors.txt | sudo tee --append /etc/apt/mirrors.txt + sudo sed -i 's~http://azure.archive.ubuntu.com/ubuntu/~mirror+file:/etc/apt/mirrors.txt~' /etc/apt/sources.list + + - name: Create build environment + run: | + sudo apt update + sudo apt install doxygen + pip install mkdocs-material==9.5.25 mkdocstrings==0.25.1 mike==2.1.1 + cmake -E make_directory ${{runner.workspace}}/build + # Workaround https://github.com/actions/checkout/issues/13: + git config --global user.name "$(git --no-pager log --format=format:'%an' -n 1)" + git config --global user.email "$(git --no-pager log --format=format:'%ae' -n 1)" + + - name: Build + working-directory: ${{runner.workspace}}/build + run: $GITHUB_WORKSPACE/support/mkdocs deploy dev + + - name: Deploy + env: + KEY: "${{secrets.KEY}}" + if: env.KEY != '' && github.ref == 'refs/heads/master' + working-directory: ${{runner.workspace}}/fmt/build/fmt.dev + run: git push https://$KEY@github.com/fmtlib/fmt.dev.git diff --git a/Submodules/fmt/.github/workflows/lint.yml b/Submodules/fmt/.github/workflows/lint.yml new file mode 100644 index 0000000..0792356 --- /dev/null +++ b/Submodules/fmt/.github/workflows/lint.yml @@ -0,0 +1,56 @@ +name: lint + +on: + pull_request: + paths: + - '**.h' + - '**.cc' + +permissions: + contents: read + pull-requests: write + +jobs: + format_code: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4.1.6 + + - name: Install clang-format + uses: aminya/setup-cpp@290824452986e378826155f3379d31bce8753d76 # v0.37.0 + with: + clangformat: 17.0.5 + + - name: Run clang-format + id: clang_format + run: | + find include src -name '*.h' -o -name '*.cc' | xargs clang-format -i -style=file -fallback-style=none + git diff | tee fmt.patch + if [ -s fmt.patch ]; then + exit 1 + fi + - uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1 + if: failure() && steps.clang_format.outcome == 'failure' + with: + github-token: ${{ secrets.KEY }} + script: | + const fs = require('fs'); + const patch = fs.readFileSync('fmt.patch', { encoding: 'utf8' }); + const comment = `clang-format 17.0.5 found issues in the formatting in your code: +
+ + View the diff from clang-format: + + + \`\`\`diff + ${patch} + \`\`\` + +
+ `; + await github.rest.issues.createComment({ + issue_number: context.issue.number, + owner: context.repo.owner, + repo: context.repo.repo, + body: comment + }); diff --git a/Submodules/fmt/.github/workflows/linux.yml b/Submodules/fmt/.github/workflows/linux.yml new file mode 100644 index 0000000..5b4e213 --- /dev/null +++ b/Submodules/fmt/.github/workflows/linux.yml @@ -0,0 +1,116 @@ +name: linux + +on: [push, pull_request] + +permissions: + contents: read + +jobs: + build: + runs-on: ubuntu-20.04 + strategy: + matrix: + cxx: [g++-4.8, g++-10, clang++-9] + build_type: [Debug, Release] + std: [11] + include: + - cxx: g++-4.8 + install: sudo apt install g++-4.8 + - cxx: g++-8 + build_type: Debug + std: 14 + install: sudo apt install g++-8 + - cxx: g++-8 + build_type: Debug + std: 17 + install: sudo apt install g++-8 + - cxx: g++-9 + build_type: Debug + std: 17 + - cxx: g++-10 + build_type: Debug + std: 17 + - cxx: g++-11 + build_type: Debug + std: 20 + install: sudo apt install g++-11 + - cxx: clang++-8 + build_type: Debug + std: 17 + cxxflags: -stdlib=libc++ + install: sudo apt install clang-8 libc++-8-dev libc++abi-8-dev + - cxx: clang++-9 + install: sudo apt install clang-9 + - cxx: clang++-9 + build_type: Debug + fuzz: -DFMT_FUZZ=ON -DFMT_FUZZ_LINKMAIN=ON + std: 17 + install: sudo apt install clang-9 + - cxx: clang++-11 + build_type: Debug + std: 20 + - cxx: clang++-11 + build_type: Debug + std: 20 + cxxflags: -stdlib=libc++ + install: sudo apt install libc++-11-dev libc++abi-11-dev + - shared: -DBUILD_SHARED_LIBS=ON + + steps: + - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4.1.6 + + - name: Set timezone + run: sudo timedatectl set-timezone 'Asia/Yekaterinburg' + + - name: Add repositories for older GCC + run: | + # Below two repos provide GCC 4.8, 5.5 and 6.4 + sudo apt-add-repository 'deb http://azure.archive.ubuntu.com/ubuntu/ bionic main' + sudo apt-add-repository 'deb http://azure.archive.ubuntu.com/ubuntu/ bionic universe' + # Below two repos additionally update GCC 6 to 6.5 + # sudo apt-add-repository 'deb http://azure.archive.ubuntu.com/ubuntu/ bionic-updates main' + # sudo apt-add-repository 'deb http://azure.archive.ubuntu.com/ubuntu/ bionic-updates universe' + if: ${{ matrix.cxx == 'g++-4.8' }} + + - name: Add repositories for newer GCC + run: | + sudo apt-add-repository ppa:ubuntu-toolchain-r/test + if: ${{ matrix.cxx == 'g++-11' }} + + - name: Add Ubuntu mirrors + run: | + # Github Actions caching proxy is at times unreliable + # see https://github.com/actions/runner-images/issues/7048 + printf 'http://azure.archive.ubuntu.com/ubuntu\tpriority:1\n' | sudo tee /etc/apt/mirrors.txt + curl http://mirrors.ubuntu.com/mirrors.txt | sudo tee --append /etc/apt/mirrors.txt + sudo sed -i 's~http://azure.archive.ubuntu.com/ubuntu/~mirror+file:/etc/apt/mirrors.txt~' /etc/apt/sources.list + + - name: Create Build Environment + run: | + sudo apt update + ${{matrix.install}} + sudo apt install locales-all + cmake -E make_directory ${{runner.workspace}}/build + + - name: Configure + working-directory: ${{runner.workspace}}/build + env: + CXX: ${{matrix.cxx}} + CXXFLAGS: ${{matrix.cxxflags}} + run: | + cmake -DCMAKE_BUILD_TYPE=${{matrix.build_type}} ${{matrix.fuzz}} ${{matrix.shared}} \ + -DCMAKE_CXX_STANDARD=${{matrix.std}} -DFMT_DOC=OFF \ + -DCMAKE_CXX_VISIBILITY_PRESET=hidden -DCMAKE_VISIBILITY_INLINES_HIDDEN=ON \ + -DFMT_PEDANTIC=ON -DFMT_WERROR=ON $GITHUB_WORKSPACE + + - name: Build + working-directory: ${{runner.workspace}}/build + run: | + threads=`nproc` + cmake --build . --config ${{matrix.build_type}} --parallel $threads + + - name: Test + working-directory: ${{runner.workspace}}/build + run: ctest -C ${{matrix.build_type}} + env: + CTEST_OUTPUT_ON_FAILURE: True diff --git a/Submodules/fmt/.github/workflows/macos.yml b/Submodules/fmt/.github/workflows/macos.yml new file mode 100644 index 0000000..1972cce --- /dev/null +++ b/Submodules/fmt/.github/workflows/macos.yml @@ -0,0 +1,54 @@ +name: macos + +on: [push, pull_request] + +permissions: + contents: read + +jobs: + build: + strategy: + matrix: + os: [macos-13, macos-14] + build_type: [Debug, Release] + std: [11, 17, 20] + exclude: + - { os: macos-13, std: 11 } + - { os: macos-13, std: 17 } + include: + - shared: -DBUILD_SHARED_LIBS=ON + + runs-on: '${{ matrix.os }}' + + steps: + - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4.1.6 + + - name: Set timezone + run: sudo systemsetup -settimezone 'Asia/Yekaterinburg' + + - name: Select Xcode 14.3 (macOS 13) + run: sudo xcode-select -s "/Applications/Xcode_14.3.app" + if: ${{ matrix.os == 'macos-13' }} + + - name: Create Build Environment + run: cmake -E make_directory ${{runner.workspace}}/build + + - name: Configure + working-directory: ${{runner.workspace}}/build + run: | + cmake -DCMAKE_BUILD_TYPE=${{matrix.build_type}} ${{matrix.shared}} \ + -DCMAKE_CXX_STANDARD=${{matrix.std}} \ + -DCMAKE_CXX_VISIBILITY_PRESET=hidden -DCMAKE_VISIBILITY_INLINES_HIDDEN=ON \ + -DFMT_DOC=OFF -DFMT_PEDANTIC=ON -DFMT_WERROR=ON $GITHUB_WORKSPACE + + - name: Build + working-directory: ${{runner.workspace}}/build + run: | + threads=`sysctl -n hw.logicalcpu` + cmake --build . --config ${{matrix.build_type}} --parallel $threads + + - name: Test + working-directory: ${{runner.workspace}}/build + run: ctest -C ${{matrix.build_type}} + env: + CTEST_OUTPUT_ON_FAILURE: True diff --git a/Submodules/fmt/.github/workflows/scorecard.yml b/Submodules/fmt/.github/workflows/scorecard.yml new file mode 100644 index 0000000..1558240 --- /dev/null +++ b/Submodules/fmt/.github/workflows/scorecard.yml @@ -0,0 +1,65 @@ +# This workflow uses actions that are not certified by GitHub. They are provided +# by a third-party and are governed by separate terms of service, privacy +# policy, and support documentation. + +name: Scorecard supply-chain security +on: + # For Branch-Protection check. Only the default branch is supported. See + # https://github.com/ossf/scorecard/blob/main/docs/checks.md#branch-protection + branch_protection_rule: + # To guarantee Maintained check is occasionally updated. See + # https://github.com/ossf/scorecard/blob/main/docs/checks.md#maintained + schedule: + - cron: '26 14 * * 5' + push: + branches: [ "master" ] + +# Declare default permissions as read only. +permissions: read-all + +jobs: + analysis: + name: Scorecard analysis + runs-on: ubuntu-latest + permissions: + # Needed to upload the results to code-scanning dashboard. + security-events: write + # Needed to publish results and get a badge (see publish_results below). + id-token: write + + steps: + - name: "Checkout code" + uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4.1.6 + with: + persist-credentials: false + + - name: "Run analysis" + uses: ossf/scorecard-action@dc50aa9510b46c811795eb24b2f1ba02a914e534 # v2.3.3 + with: + results_file: results.sarif + results_format: sarif + # (Optional) "write" PAT token. Uncomment the `repo_token` line below if: + # - you want to enable the Branch-Protection check on a *public* repository, or + # To create the PAT, follow the steps in https://github.com/ossf/scorecard-action#authentication-with-pat. + # repo_token: ${{ secrets.SCORECARD_TOKEN }} + + # Public repositories: + # - Publish results to OpenSSF REST API for easy access by consumers + # - Allows the repository to include the Scorecard badge. + # - See https://github.com/ossf/scorecard-action#publishing-results. + publish_results: true + + # Upload the results as artifacts (optional). Commenting out will disable uploads of run results in SARIF + # format to the repository Actions tab. + - name: "Upload artifact" + uses: actions/upload-artifact@65462800fd760344b1a7b4382951275a0abb4808 # v4.3.3 + with: + name: SARIF file + path: results.sarif + retention-days: 5 + + # Upload the results to GitHub's code scanning dashboard. + - name: "Upload to code-scanning" + uses: github/codeql-action/upload-sarif@b611370bb5703a7efb587f9d136a52ea24c5c38c # v3.25.11 + with: + sarif_file: results.sarif diff --git a/Submodules/fmt/.github/workflows/windows.yml b/Submodules/fmt/.github/workflows/windows.yml new file mode 100644 index 0000000..014396b --- /dev/null +++ b/Submodules/fmt/.github/workflows/windows.yml @@ -0,0 +1,100 @@ +name: windows + +on: [push, pull_request] + +permissions: + contents: read + +jobs: + build: + runs-on: ${{matrix.os}} + strategy: + matrix: + # windows-2019 has MSVC 2019 installed; + # windows-2022 has MSVC 2022 installed: + # https://github.com/actions/virtual-environments. + os: [windows-2019] + platform: [Win32, x64] + toolset: [v140, v141, v142] + standard: [14, 17, 20] + shared: ["", -DBUILD_SHARED_LIBS=ON] + build_type: [Debug, Release] + exclude: + - { toolset: v140, standard: 17 } + - { toolset: v140, standard: 20 } + - { toolset: v141, standard: 14 } + - { toolset: v141, standard: 20 } + - { toolset: v142, standard: 14 } + - { platform: Win32, toolset: v140 } + - { platform: Win32, toolset: v141 } + - { platform: Win32, standard: 14 } + - { platform: Win32, standard: 20 } + - { platform: x64, toolset: v140, shared: -DBUILD_SHARED_LIBS=ON } + - { platform: x64, toolset: v141, shared: -DBUILD_SHARED_LIBS=ON } + - { platform: x64, standard: 14, shared: -DBUILD_SHARED_LIBS=ON } + - { platform: x64, standard: 20, shared: -DBUILD_SHARED_LIBS=ON } + include: + - os: windows-2022 + platform: x64 + toolset: v143 + build_type: Debug + standard: 20 + + steps: + - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4.1.6 + + - name: Set timezone + run: tzutil /s "Ekaterinburg Standard Time" + + - name: Create Build Environment + run: cmake -E make_directory ${{runner.workspace}}/build + + - name: Configure + # Use a bash shell for $GITHUB_WORKSPACE. + shell: bash + working-directory: ${{runner.workspace}}/build + run: | + cmake -A ${{matrix.platform}} -T ${{matrix.toolset}} \ + -DCMAKE_CXX_STANDARD=${{matrix.standard}} \ + ${{matrix.shared}} -DCMAKE_BUILD_TYPE=${{matrix.build_type}} \ + $GITHUB_WORKSPACE + + - name: Build + working-directory: ${{runner.workspace}}/build + run: | + $threads = (Get-CimInstance Win32_ComputerSystem).NumberOfLogicalProcessors + cmake --build . --config ${{matrix.build_type}} --parallel $threads + + - name: Test + working-directory: ${{runner.workspace}}/build + run: ctest -C ${{matrix.build_type}} -V + env: + CTEST_OUTPUT_ON_FAILURE: True + + mingw: + runs-on: windows-latest + defaults: + run: + shell: msys2 {0} + strategy: + matrix: + sys: [ mingw64, ucrt64 ] + steps: + - name: Set timezone + run: tzutil /s "Ekaterinburg Standard Time" + shell: cmd + - uses: msys2/setup-msys2@d0e80f58dffbc64f6a3a1f43527d469b4fc7b6c8 # v2.23.0 + with: + release: false + msystem: ${{matrix.sys}} + pacboy: cc:p cmake:p ninja:p lld:p + - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4.1.6 + - name: Configure + run: cmake -B ../build -DBUILD_SHARED_LIBS=ON -DCMAKE_BUILD_TYPE=Debug + env: { LDFLAGS: -fuse-ld=lld } + - name: Build + run: cmake --build ../build + - name: Test + run: ctest -j `nproc` --test-dir ../build + env: + CTEST_OUTPUT_ON_FAILURE: True diff --git a/Submodules/fmt/.gitignore b/Submodules/fmt/.gitignore new file mode 100644 index 0000000..2635026 --- /dev/null +++ b/Submodules/fmt/.gitignore @@ -0,0 +1,20 @@ +*.a +*.so* +*.xcodeproj +*~ +.vscode/ +/CMakeScripts +/Testing +/_CPack_Packages +/install_manifest.txt +CMakeCache.txt +CMakeFiles +CPack*.cmake +CTestTestfile.cmake +FMT.build +Makefile +bin/ +build/ +cmake_install.cmake +fmt-*.cmake +fmt.pc diff --git a/Submodules/fmt/.gitrepo b/Submodules/fmt/.gitrepo new file mode 100644 index 0000000..b2c6b35 --- /dev/null +++ b/Submodules/fmt/.gitrepo @@ -0,0 +1,12 @@ +; DO NOT EDIT (unless you know what you are doing) +; +; This subdirectory is a git "subrepo", and this file is maintained by the +; git-subrepo command. See https://github.com/git-commands/git-subrepo#readme +; +[subrepo] + remote = https://github.com/fmtlib/fmt + branch = 11.0.2 + commit = 0c9fce2ffefecfdce794e1859584e25877b7b592 + parent = 8e0580cdd778bdca7ee2abd19edf391c54946a6d + method = merge + cmdver = 0.4.6 diff --git a/Submodules/fmt/CMakeLists.txt b/Submodules/fmt/CMakeLists.txt new file mode 100644 index 0000000..e3b3511 --- /dev/null +++ b/Submodules/fmt/CMakeLists.txt @@ -0,0 +1,520 @@ +cmake_minimum_required(VERSION 3.8...3.28) + +# Fallback for using newer policies on CMake <3.12. +if (${CMAKE_VERSION} VERSION_LESS 3.12) + cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}) +endif () + +# Determine if fmt is built as a subproject (using add_subdirectory) +# or if it is the master project. +if (NOT DEFINED FMT_MASTER_PROJECT) + set(FMT_MASTER_PROJECT OFF) + if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR) + set(FMT_MASTER_PROJECT ON) + message(STATUS "CMake version: ${CMAKE_VERSION}") + endif () +endif () + +# Joins arguments and places the results in ${result_var}. +function(join result_var) + set(result "") + foreach (arg ${ARGN}) + set(result "${result}${arg}") + endforeach () + set(${result_var} "${result}" PARENT_SCOPE) +endfunction() + +# DEPRECATED! Should be merged into add_module_library. +function(enable_module target) + if (MSVC) + set(BMI ${CMAKE_CURRENT_BINARY_DIR}/${target}.ifc) + target_compile_options(${target} + PRIVATE /interface /ifcOutput ${BMI} + INTERFACE /reference fmt=${BMI}) + set_target_properties(${target} PROPERTIES ADDITIONAL_CLEAN_FILES ${BMI}) + set_source_files_properties(${BMI} PROPERTIES GENERATED ON) + endif () +endfunction() + +set(FMT_USE_CMAKE_MODULES FALSE) +if (CMAKE_VERSION VERSION_GREATER_EQUAL 3.28 AND + CMAKE_GENERATOR STREQUAL "Ninja") + set(FMT_USE_CMAKE_MODULES TRUE) +endif () + +# Adds a library compiled with C++20 module support. +# `enabled` is a CMake variables that specifies if modules are enabled. +# If modules are disabled `add_module_library` falls back to creating a +# non-modular library. +# +# Usage: +# add_module_library( [sources...] FALLBACK [sources...] [IF enabled]) +function(add_module_library name) + cmake_parse_arguments(AML "" "IF" "FALLBACK" ${ARGN}) + set(sources ${AML_UNPARSED_ARGUMENTS}) + + add_library(${name}) + set_target_properties(${name} PROPERTIES LINKER_LANGUAGE CXX) + + if (NOT ${${AML_IF}}) + # Create a non-modular library. + target_sources(${name} PRIVATE ${AML_FALLBACK}) + set_target_properties(${name} PROPERTIES CXX_SCAN_FOR_MODULES OFF) + return() + endif () + + # Modules require C++20. + target_compile_features(${name} PUBLIC cxx_std_20) + if (CMAKE_COMPILER_IS_GNUCXX) + target_compile_options(${name} PUBLIC -fmodules-ts) + endif () + + target_compile_definitions(${name} PRIVATE FMT_MODULE) + + if (FMT_USE_CMAKE_MODULES) + target_sources(${name} PUBLIC FILE_SET fmt TYPE CXX_MODULES + FILES ${sources}) + else() + # `std` is affected by CMake options and may be higher than C++20. + get_target_property(std ${name} CXX_STANDARD) + + if (CMAKE_CXX_COMPILER_ID MATCHES "Clang") + set(pcms) + foreach (src ${sources}) + get_filename_component(pcm ${src} NAME_WE) + set(pcm ${pcm}.pcm) + + # Propagate -fmodule-file=*.pcm to targets that link with this library. + target_compile_options( + ${name} PUBLIC -fmodule-file=${CMAKE_CURRENT_BINARY_DIR}/${pcm}) + + # Use an absolute path to prevent target_link_libraries prepending -l + # to it. + set(pcms ${pcms} ${CMAKE_CURRENT_BINARY_DIR}/${pcm}) + add_custom_command( + OUTPUT ${pcm} + COMMAND ${CMAKE_CXX_COMPILER} + -std=c++${std} -x c++-module --precompile -c + -o ${pcm} ${CMAKE_CURRENT_SOURCE_DIR}/${src} + "-I$,;-I>" + # Required by the -I generator expression above. + COMMAND_EXPAND_LISTS + DEPENDS ${src}) + endforeach () + + # Add .pcm files as sources to make sure they are built before the library. + set(sources) + foreach (pcm ${pcms}) + get_filename_component(pcm_we ${pcm} NAME_WE) + set(obj ${pcm_we}.o) + # Use an absolute path to prevent target_link_libraries prepending -l. + set(sources ${sources} ${pcm} ${CMAKE_CURRENT_BINARY_DIR}/${obj}) + add_custom_command( + OUTPUT ${obj} + COMMAND ${CMAKE_CXX_COMPILER} $ + -c -o ${obj} ${pcm} + DEPENDS ${pcm}) + endforeach () + endif () + target_sources(${name} PRIVATE ${sources}) + endif() +endfunction() + +include(CMakeParseArguments) + +# Sets a cache variable with a docstring joined from multiple arguments: +# set( ... CACHE ...) +# This allows splitting a long docstring for readability. +function(set_verbose) + # cmake_parse_arguments is broken in CMake 3.4 (cannot parse CACHE) so use + # list instead. + list(GET ARGN 0 var) + list(REMOVE_AT ARGN 0) + list(GET ARGN 0 val) + list(REMOVE_AT ARGN 0) + list(REMOVE_AT ARGN 0) + list(GET ARGN 0 type) + list(REMOVE_AT ARGN 0) + join(doc ${ARGN}) + set(${var} ${val} CACHE ${type} ${doc}) +endfunction() + +# Set the default CMAKE_BUILD_TYPE to Release. +# This should be done before the project command since the latter can set +# CMAKE_BUILD_TYPE itself (it does so for nmake). +if (FMT_MASTER_PROJECT AND NOT CMAKE_BUILD_TYPE) + set_verbose(CMAKE_BUILD_TYPE Release CACHE STRING + "Choose the type of build, options are: None(CMAKE_CXX_FLAGS or " + "CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel.") +endif () + +project(FMT CXX) +include(GNUInstallDirs) +set_verbose(FMT_INC_DIR ${CMAKE_INSTALL_INCLUDEDIR} CACHE STRING + "Installation directory for include files, a relative path that " + "will be joined with ${CMAKE_INSTALL_PREFIX} or an absolute path.") + +option(FMT_PEDANTIC "Enable extra warnings and expensive tests." OFF) +option(FMT_WERROR "Halt the compilation with an error on compiler warnings." + OFF) + +# Options that control generation of various targets. +option(FMT_DOC "Generate the doc target." ${FMT_MASTER_PROJECT}) +option(FMT_INSTALL "Generate the install target." ON) +option(FMT_TEST "Generate the test target." ${FMT_MASTER_PROJECT}) +option(FMT_FUZZ "Generate the fuzz target." OFF) +option(FMT_CUDA_TEST "Generate the cuda-test target." OFF) +option(FMT_OS "Include OS-specific APIs." ON) +option(FMT_MODULE "Build a module instead of a traditional library." OFF) +option(FMT_SYSTEM_HEADERS "Expose headers with marking them as system." OFF) +option(FMT_UNICODE "Enable Unicode support." ON) + +if (FMT_TEST AND FMT_MODULE) + # The tests require {fmt} to be compiled as traditional library + message(STATUS "Testing is incompatible with build mode 'module'.") +endif () +set(FMT_SYSTEM_HEADERS_ATTRIBUTE "") +if (FMT_SYSTEM_HEADERS) + set(FMT_SYSTEM_HEADERS_ATTRIBUTE SYSTEM) +endif () +if (CMAKE_SYSTEM_NAME STREQUAL "MSDOS") + set(FMT_TEST OFF) + message(STATUS "MSDOS is incompatible with gtest") +endif () + +# Get version from base.h +file(READ include/fmt/base.h base_h) +if (NOT base_h MATCHES "FMT_VERSION ([0-9]+)([0-9][0-9])([0-9][0-9])") + message(FATAL_ERROR "Cannot get FMT_VERSION from base.h.") +endif () +# Use math to skip leading zeros if any. +math(EXPR CPACK_PACKAGE_VERSION_MAJOR ${CMAKE_MATCH_1}) +math(EXPR CPACK_PACKAGE_VERSION_MINOR ${CMAKE_MATCH_2}) +math(EXPR CPACK_PACKAGE_VERSION_PATCH ${CMAKE_MATCH_3}) +join(FMT_VERSION ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}. + ${CPACK_PACKAGE_VERSION_PATCH}) +message(STATUS "{fmt} version: ${FMT_VERSION}") + +message(STATUS "Build type: ${CMAKE_BUILD_TYPE}") + +if (NOT CMAKE_RUNTIME_OUTPUT_DIRECTORY) + set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/bin) +endif () + +set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} + "${CMAKE_CURRENT_SOURCE_DIR}/support/cmake") + +include(CheckCXXCompilerFlag) +include(JoinPaths) + +if (FMT_MASTER_PROJECT AND NOT DEFINED CMAKE_CXX_VISIBILITY_PRESET) + set_verbose(CMAKE_CXX_VISIBILITY_PRESET hidden CACHE STRING + "Preset for the export of private symbols") + set_property(CACHE CMAKE_CXX_VISIBILITY_PRESET PROPERTY STRINGS + hidden default) +endif () + +if (FMT_MASTER_PROJECT AND NOT DEFINED CMAKE_VISIBILITY_INLINES_HIDDEN) + set_verbose(CMAKE_VISIBILITY_INLINES_HIDDEN ON CACHE BOOL + "Whether to add a compile flag to hide symbols of inline functions") +endif () + +if (CMAKE_CXX_COMPILER_ID MATCHES "GNU") + set(PEDANTIC_COMPILE_FLAGS -pedantic-errors -Wall -Wextra -pedantic + -Wold-style-cast -Wundef + -Wredundant-decls -Wwrite-strings -Wpointer-arith + -Wcast-qual -Wformat=2 -Wmissing-include-dirs + -Wcast-align + -Wctor-dtor-privacy -Wdisabled-optimization + -Winvalid-pch -Woverloaded-virtual + -Wconversion -Wundef + -Wno-ctor-dtor-privacy -Wno-format-nonliteral) + if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.6) + set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} + -Wno-dangling-else -Wno-unused-local-typedefs) + endif () + if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0) + set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wdouble-promotion + -Wtrampolines -Wzero-as-null-pointer-constant -Wuseless-cast + -Wvector-operation-performance -Wsized-deallocation -Wshadow) + endif () + if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6.0) + set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wshift-overflow=2 + -Wnull-dereference -Wduplicated-cond) + endif () + set(WERROR_FLAG -Werror) +endif () + +if (CMAKE_CXX_COMPILER_ID MATCHES "Clang") + set(PEDANTIC_COMPILE_FLAGS -Wall -Wextra -pedantic -Wconversion -Wundef + -Wdeprecated -Wweak-vtables -Wshadow + -Wno-gnu-zero-variadic-macro-arguments) + check_cxx_compiler_flag(-Wzero-as-null-pointer-constant HAS_NULLPTR_WARNING) + if (HAS_NULLPTR_WARNING) + set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} + -Wzero-as-null-pointer-constant) + endif () + set(WERROR_FLAG -Werror) +endif () + +if (MSVC) + set(PEDANTIC_COMPILE_FLAGS /W3) + set(WERROR_FLAG /WX) +endif () + +if (FMT_MASTER_PROJECT AND CMAKE_GENERATOR MATCHES "Visual Studio") + # If Microsoft SDK is installed create script run-msbuild.bat that + # calls SetEnv.cmd to set up build environment and runs msbuild. + # It is useful when building Visual Studio projects with the SDK + # toolchain rather than Visual Studio. + include(FindSetEnv) + if (WINSDK_SETENV) + set(MSBUILD_SETUP "call \"${WINSDK_SETENV}\"") + endif () + # Set FrameworkPathOverride to get rid of MSB3644 warnings. + join(netfxpath + "C:\\Program Files\\Reference Assemblies\\Microsoft\\Framework\\" + ".NETFramework\\v4.0") + file(WRITE run-msbuild.bat " + ${MSBUILD_SETUP} + ${CMAKE_MAKE_PROGRAM} -p:FrameworkPathOverride=\"${netfxpath}\" %*") +endif () + +function(add_headers VAR) + set(headers ${${VAR}}) + foreach (header ${ARGN}) + set(headers ${headers} include/fmt/${header}) + endforeach() + set(${VAR} ${headers} PARENT_SCOPE) +endfunction() + +# Define the fmt library, its includes and the needed defines. +add_headers(FMT_HEADERS args.h base.h chrono.h color.h compile.h core.h format.h + format-inl.h os.h ostream.h printf.h ranges.h std.h + xchar.h) +set(FMT_SOURCES src/format.cc) + +add_module_library(fmt src/fmt.cc FALLBACK + ${FMT_SOURCES} ${FMT_HEADERS} README.md ChangeLog.md + IF FMT_MODULE) +add_library(fmt::fmt ALIAS fmt) +if (FMT_MODULE) + enable_module(fmt) +elseif (FMT_OS) + target_sources(fmt PRIVATE src/os.cc) +else() + target_compile_definitions(fmt PRIVATE FMT_OS=0) +endif () + +if (FMT_WERROR) + target_compile_options(fmt PRIVATE ${WERROR_FLAG}) +endif () +if (FMT_PEDANTIC) + target_compile_options(fmt PRIVATE ${PEDANTIC_COMPILE_FLAGS}) +endif () + +if (cxx_std_11 IN_LIST CMAKE_CXX_COMPILE_FEATURES) + target_compile_features(fmt PUBLIC cxx_std_11) +else () + message(WARNING "Feature cxx_std_11 is unknown for the CXX compiler") +endif () + +target_include_directories(fmt ${FMT_SYSTEM_HEADERS_ATTRIBUTE} PUBLIC + $ + $) + +set(FMT_DEBUG_POSTFIX d CACHE STRING "Debug library postfix.") + +set_target_properties(fmt PROPERTIES + VERSION ${FMT_VERSION} SOVERSION ${CPACK_PACKAGE_VERSION_MAJOR} + PUBLIC_HEADER "${FMT_HEADERS}" + DEBUG_POSTFIX "${FMT_DEBUG_POSTFIX}" + + # Workaround for Visual Studio 2017: + # Ensure the .pdb is created with the same name and in the same directory + # as the .lib. Newer VS versions already do this by default, but there is no + # harm in setting it for those too. Ignored by other generators. + COMPILE_PDB_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}" + COMPILE_PDB_NAME "fmt" + COMPILE_PDB_NAME_DEBUG "fmt${FMT_DEBUG_POSTFIX}") + +# Set FMT_LIB_NAME for pkg-config fmt.pc. We cannot use the OUTPUT_NAME target +# property because it's not set by default. +set(FMT_LIB_NAME fmt) +if (CMAKE_BUILD_TYPE STREQUAL "Debug") + set(FMT_LIB_NAME ${FMT_LIB_NAME}${FMT_DEBUG_POSTFIX}) +endif () + +if (BUILD_SHARED_LIBS) + target_compile_definitions(fmt PRIVATE FMT_LIB_EXPORT INTERFACE FMT_SHARED) +endif () +if (FMT_SAFE_DURATION_CAST) + target_compile_definitions(fmt PUBLIC FMT_SAFE_DURATION_CAST) +endif () + +add_library(fmt-header-only INTERFACE) +add_library(fmt::fmt-header-only ALIAS fmt-header-only) + +if (NOT MSVC) + # Unicode is always supported on compilers other than MSVC. +elseif (FMT_UNICODE) + # Unicode support requires compiling with /utf-8. + target_compile_options(fmt PUBLIC $<$:/utf-8>) + target_compile_options(fmt-header-only INTERFACE $<$:/utf-8>) +else () + target_compile_definitions(fmt PUBLIC FMT_UNICODE=0) +endif () + +target_compile_definitions(fmt-header-only INTERFACE FMT_HEADER_ONLY=1) +target_compile_features(fmt-header-only INTERFACE cxx_std_11) + +target_include_directories(fmt-header-only + ${FMT_SYSTEM_HEADERS_ATTRIBUTE} INTERFACE + $ + $) + +# Install targets. +if (FMT_INSTALL) + include(CMakePackageConfigHelpers) + set_verbose(FMT_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/cmake/fmt CACHE STRING + "Installation directory for cmake files, a relative path that " + "will be joined with ${CMAKE_INSTALL_PREFIX} or an absolute " + "path.") + set(version_config ${PROJECT_BINARY_DIR}/fmt-config-version.cmake) + set(project_config ${PROJECT_BINARY_DIR}/fmt-config.cmake) + set(pkgconfig ${PROJECT_BINARY_DIR}/fmt.pc) + set(targets_export_name fmt-targets) + + set_verbose(FMT_LIB_DIR ${CMAKE_INSTALL_LIBDIR} CACHE STRING + "Installation directory for libraries, a relative path that " + "will be joined to ${CMAKE_INSTALL_PREFIX} or an absolute path.") + + set_verbose(FMT_PKGCONFIG_DIR ${CMAKE_INSTALL_LIBDIR}/pkgconfig CACHE STRING + "Installation directory for pkgconfig (.pc) files, a relative " + "path that will be joined with ${CMAKE_INSTALL_PREFIX} or an " + "absolute path.") + + # Generate the version, config and target files into the build directory. + write_basic_package_version_file( + ${version_config} + VERSION ${FMT_VERSION} + COMPATIBILITY AnyNewerVersion) + + join_paths(libdir_for_pc_file "\${exec_prefix}" "${FMT_LIB_DIR}") + join_paths(includedir_for_pc_file "\${prefix}" "${FMT_INC_DIR}") + + configure_file( + "${PROJECT_SOURCE_DIR}/support/cmake/fmt.pc.in" + "${pkgconfig}" + @ONLY) + configure_package_config_file( + ${PROJECT_SOURCE_DIR}/support/cmake/fmt-config.cmake.in + ${project_config} + INSTALL_DESTINATION ${FMT_CMAKE_DIR}) + + set(INSTALL_TARGETS fmt fmt-header-only) + + set(INSTALL_FILE_SET) + if (FMT_USE_CMAKE_MODULES) + set(INSTALL_FILE_SET FILE_SET fmt DESTINATION "${FMT_INC_DIR}/fmt") + endif() + + # Install the library and headers. + install(TARGETS ${INSTALL_TARGETS} EXPORT ${targets_export_name} + LIBRARY DESTINATION ${FMT_LIB_DIR} + ARCHIVE DESTINATION ${FMT_LIB_DIR} + PUBLIC_HEADER DESTINATION "${FMT_INC_DIR}/fmt" + RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} + ${INSTALL_FILE_SET}) + + # Use a namespace because CMake provides better diagnostics for namespaced + # imported targets. + export(TARGETS ${INSTALL_TARGETS} NAMESPACE fmt:: + FILE ${PROJECT_BINARY_DIR}/${targets_export_name}.cmake) + + # Install version, config and target files. + install( + FILES ${project_config} ${version_config} + DESTINATION ${FMT_CMAKE_DIR}) + install(EXPORT ${targets_export_name} DESTINATION ${FMT_CMAKE_DIR} + NAMESPACE fmt::) + + install(FILES "${pkgconfig}" DESTINATION "${FMT_PKGCONFIG_DIR}") +endif () + +function(add_doc_target) + find_program(DOXYGEN doxygen + PATHS "$ENV{ProgramFiles}/doxygen/bin" + "$ENV{ProgramFiles\(x86\)}/doxygen/bin") + if (NOT DOXYGEN) + message(STATUS "Target 'doc' disabled because doxygen not found") + return () + endif () + + find_program(MKDOCS mkdocs) + if (NOT MKDOCS) + message(STATUS "Target 'doc' disabled because mkdocs not found") + return () + endif () + + set(sources ) + foreach (source api.md index.md syntax.md get-started.md fmt.css fmt.js) + set(sources ${sources} doc/${source}) + endforeach() + + add_custom_target( + doc + COMMAND + ${CMAKE_COMMAND} + -E env PYTHONPATH=${CMAKE_CURRENT_SOURCE_DIR}/support/python + ${MKDOCS} build -f ${CMAKE_CURRENT_SOURCE_DIR}/support/mkdocs.yml + # MkDocs requires the site dir to be outside of the doc dir. + --site-dir ${CMAKE_CURRENT_BINARY_DIR}/doc-html + --no-directory-urls + SOURCES ${sources}) + + include(GNUInstallDirs) + install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/doc-html/ + DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/doc/fmt OPTIONAL) +endfunction() + +if (FMT_DOC) + add_doc_target() +endif () + +if (FMT_TEST) + enable_testing() + add_subdirectory(test) +endif () + +# Control fuzzing independent of the unit tests. +if (FMT_FUZZ) + add_subdirectory(test/fuzzing) + + # The FMT_FUZZ macro is used to prevent resource exhaustion in fuzzing + # mode and make fuzzing practically possible. It is similar to + # FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION but uses a different name to + # avoid interfering with fuzzing of projects that use {fmt}. + # See also https://llvm.org/docs/LibFuzzer.html#fuzzer-friendly-build-mode. + target_compile_definitions(fmt PUBLIC FMT_FUZZ) +endif () + +set(gitignore ${PROJECT_SOURCE_DIR}/.gitignore) +if (FMT_MASTER_PROJECT AND EXISTS ${gitignore}) + # Get the list of ignored files from .gitignore. + file (STRINGS ${gitignore} lines) + list(REMOVE_ITEM lines /doc/html) + foreach (line ${lines}) + string(REPLACE "." "[.]" line "${line}") + string(REPLACE "*" ".*" line "${line}") + set(ignored_files ${ignored_files} "${line}$" "${line}/") + endforeach () + set(ignored_files ${ignored_files} /.git /build/doxyxml .vagrant) + + set(CPACK_SOURCE_GENERATOR ZIP) + set(CPACK_SOURCE_IGNORE_FILES ${ignored_files}) + set(CPACK_SOURCE_PACKAGE_FILE_NAME fmt-${FMT_VERSION}) + set(CPACK_PACKAGE_NAME fmt) + set(CPACK_RESOURCE_FILE_README ${PROJECT_SOURCE_DIR}/README.md) + include(CPack) +endif () diff --git a/Submodules/fmt/CONTRIBUTING.md b/Submodules/fmt/CONTRIBUTING.md new file mode 100644 index 0000000..b82f145 --- /dev/null +++ b/Submodules/fmt/CONTRIBUTING.md @@ -0,0 +1,20 @@ +Contributing to {fmt} +===================== + +By submitting a pull request or a patch, you represent that you have the right +to license your contribution to the {fmt} project owners and the community, +agree that your contributions are licensed under the {fmt} license, and agree +to future changes to the licensing. + +All C++ code must adhere to [Google C++ Style Guide]( +https://google.github.io/styleguide/cppguide.html) with the following +exceptions: + +* Exceptions are permitted +* snake_case should be used instead of UpperCamelCase for function and type + names + +All documentation must adhere to the [Google Developer Documentation Style +Guide](https://developers.google.com/style). + +Thanks for contributing! diff --git a/Submodules/fmt/ChangeLog.md b/Submodules/fmt/ChangeLog.md new file mode 100644 index 0000000..6ba567d --- /dev/null +++ b/Submodules/fmt/ChangeLog.md @@ -0,0 +1,2628 @@ +# 11.0.2 - 2024-07-20 + +- Fixed compatibility with non-POSIX systems + (https://github.com/fmtlib/fmt/issues/4054, + https://github.com/fmtlib/fmt/issues/4060). + +- Fixed performance regressions when using `std::back_insert_iterator` with + `fmt::format_to` (https://github.com/fmtlib/fmt/issues/4070). + +- Fixed handling of `std::generator` and move-only iterators + (https://github.com/fmtlib/fmt/issues/4053, + https://github.com/fmtlib/fmt/pull/4057). Thanks @Arghnews. + +- Made `formatter::parse` work with types convertible to + `std::string_view` (https://github.com/fmtlib/fmt/issues/4036, + https://github.com/fmtlib/fmt/pull/4055). Thanks @Arghnews. + +- Made `volatile void*` formattable + (https://github.com/fmtlib/fmt/issues/4049, + https://github.com/fmtlib/fmt/pull/4056). Thanks @Arghnews. + +- Made `Glib::ustring` not be confused with `std::string` + (https://github.com/fmtlib/fmt/issues/4052). + +- Made `fmt::context` iterator compatible with STL algorithms that rely on + iterator category (https://github.com/fmtlib/fmt/issues/4079). + +# 11.0.1 - 2024-07-05 + +- Fixed version number in the inline namespace + (https://github.com/fmtlib/fmt/issues/4047). + +- Fixed disabling Unicode support via CMake + (https://github.com/fmtlib/fmt/issues/4051). + +- Fixed deprecated `visit_format_arg` (https://github.com/fmtlib/fmt/pull/4043). + Thanks @nebkat. + +- Fixed handling of a sign and improved the `std::complex` formater + (https://github.com/fmtlib/fmt/pull/4034, + https://github.com/fmtlib/fmt/pull/4050). Thanks @tesch1 and @phprus. + +- Fixed ADL issues in `fmt::printf` when using C++20 + (https://github.com/fmtlib/fmt/pull/4042). Thanks @toge. + +- Removed a redundant check in the formatter for `std::expected` + (https://github.com/fmtlib/fmt/pull/4040). Thanks @phprus. + +# 11.0.0 - 2024-07-01 + +- Added `fmt/base.h` which provides a subset of the API with minimal include + dependencies and enough functionality to replace all uses of the `printf` + family of functions. This brings the compile time of code using {fmt} much + closer to the equivalent `printf` code as shown on the following benchmark + that compiles 100 source files: + + | Method | Compile Time (s) | + |--------------|------------------| + | printf | 1.6 | + | IOStreams | 25.9 | + | fmt 10.x | 19.0 | + | fmt 11.0 | 4.8 | + | tinyformat | 29.1 | + | Boost Format | 55.0 | + + This gives almost 4x improvement in build speed compared to version 10. + Note that the benchmark is purely formatting code and includes. In real + projects the difference from `printf` will be smaller partly because common + standard headers will be included in almost any translation unit (TU) anyway. + In particular, in every case except `printf` above ~1s is spent in total on + including `` in all TUs. + +- Optimized includes in other headers such as `fmt/format.h` which is now + roughly equivalent to the old `fmt/core.h` in terms of build speed. + +- Migrated the documentation at https://fmt.dev/ from Sphinx to MkDocs. + +- Improved C++20 module support + (https://github.com/fmtlib/fmt/issues/3990, + https://github.com/fmtlib/fmt/pull/3991, + https://github.com/fmtlib/fmt/issues/3993, + https://github.com/fmtlib/fmt/pull/3994, + https://github.com/fmtlib/fmt/pull/3997, + https://github.com/fmtlib/fmt/pull/3998, + https://github.com/fmtlib/fmt/pull/4004, + https://github.com/fmtlib/fmt/pull/4005, + https://github.com/fmtlib/fmt/pull/4006, + https://github.com/fmtlib/fmt/pull/4013, + https://github.com/fmtlib/fmt/pull/4027, + https://github.com/fmtlib/fmt/pull/4029). In particular, native CMake support + for modules is now used if available. Thanks @yujincheng08 and @matt77hias. + +- Added an option to replace standard includes with `import std` enabled via + the `FMT_IMPORT_STD` macro (https://github.com/fmtlib/fmt/issues/3921, + https://github.com/fmtlib/fmt/pull/3928). Thanks @matt77hias. + +- Exported `fmt::range_format`, `fmt::range_format_kind` and + `fmt::compiled_string` from the `fmt` module + (https://github.com/fmtlib/fmt/pull/3970, + https://github.com/fmtlib/fmt/pull/3999). + Thanks @matt77hias and @yujincheng08. + +- Improved integration with stdio in `fmt::print`, enabling direct writes + into a C stream buffer in common cases. This may give significant + performance improvements ranging from tens of percent to [2x]( + https://stackoverflow.com/a/78457454/471164) and eliminates dynamic memory + allocations on the buffer level. It is currently enabled for built-in and + string types with wider availability coming up in future releases. + + For example, it gives ~24% improvement on a [simple benchmark]( + https://isocpp.org/files/papers/P3107R5.html#perf) compiled with Apple clang + version 15.0.0 (clang-1500.1.0.2.5) and run on macOS 14.2.1: + + ``` + ------------------------------------------------------- + Benchmark Time CPU Iterations + ------------------------------------------------------- + printf 81.8 ns 81.5 ns 8496899 + fmt::print (10.x) 63.8 ns 61.9 ns 11524151 + fmt::print (11.0) 51.3 ns 51.0 ns 13846580 + ``` + +- Improved safety of `fmt::format_to` when writing to an array + (https://github.com/fmtlib/fmt/pull/3805). + For example ([godbolt](https://www.godbolt.org/z/cYrn8dWY8)): + + ```c++ + auto volkswagen = char[4]; + auto result = fmt::format_to(volkswagen, "elephant"); + ``` + + no longer results in a buffer overflow. Instead the output will be truncated + and you can get the end iterator and whether truncation occurred from the + `result` object. Thanks @ThePhD. + +- Enabled Unicode support by default in MSVC, bringing it on par with other + compilers and making it unnecessary for users to enable it explicitly. + Most of {fmt} is encoding-agnostic but this prevents mojibake in places + where encoding matters such as path formatting and terminal output. + You can control the Unicode support via the CMake `FMT_UNICODE` option. + Note that some {fmt} packages such as the one in vcpkg have already been + compiled with Unicode enabled. + +- Added a formatter for `std::expected` + (https://github.com/fmtlib/fmt/pull/3834). Thanks @dominicpoeschko. + +- Added a formatter for `std::complex` + (https://github.com/fmtlib/fmt/issues/1467, + https://github.com/fmtlib/fmt/issues/3886, + https://github.com/fmtlib/fmt/pull/3892, + https://github.com/fmtlib/fmt/pull/3900). Thanks @phprus. + +- Added a formatter for `std::type_info` + (https://github.com/fmtlib/fmt/pull/3978). Thanks @matt77hias. + +- Specialized `formatter` for `std::basic_string` types with custom traits + and allocators (https://github.com/fmtlib/fmt/issues/3938, + https://github.com/fmtlib/fmt/pull/3943). Thanks @dieram3. + +- Added formatters for `std::chrono::day`, `std::chrono::month`, + `std::chrono::year` and `std::chrono::year_month_day` + (https://github.com/fmtlib/fmt/issues/3758, + https://github.com/fmtlib/fmt/issues/3772, + https://github.com/fmtlib/fmt/pull/3906, + https://github.com/fmtlib/fmt/pull/3913). For example: + + ```c++ + #include + #include + + int main() { + fmt::print(fg(fmt::color::green), "{}\n", std::chrono::day(7)); + } + ``` + + prints a green day: + + image + + Thanks @zivshek. + +- Fixed handling of precision in `%S` (https://github.com/fmtlib/fmt/issues/3794, + https://github.com/fmtlib/fmt/pull/3814). Thanks @js324. + +- Added support for the `-` specifier (glibc `strftime` extension) to day of + the month (`%d`) and week of the year (`%W`, `%U`, `%V`) specifiers + (https://github.com/fmtlib/fmt/pull/3976). Thanks @ZaheenJ. + +- Fixed the scope of the `-` extension in chrono formatting so that it doesn't + apply to subsequent specifiers (https://github.com/fmtlib/fmt/issues/3811, + https://github.com/fmtlib/fmt/pull/3812). Thanks @phprus. + +- Improved handling of `time_point::min()` + (https://github.com/fmtlib/fmt/issues/3282). + +- Added support for character range formatting + (https://github.com/fmtlib/fmt/issues/3857, + https://github.com/fmtlib/fmt/pull/3863). Thanks @js324. + +- Added `string` and `debug_string` range formatters + (https://github.com/fmtlib/fmt/pull/3973, + https://github.com/fmtlib/fmt/pull/4024). Thanks @matt77hias. + +- Enabled ADL for `begin` and `end` in `fmt::join` + (https://github.com/fmtlib/fmt/issues/3813, + https://github.com/fmtlib/fmt/pull/3824). Thanks @bbolli. + +- Made contiguous iterator optimizations apply to `std::basic_string` iterators + (https://github.com/fmtlib/fmt/pull/3798). Thanks @phprus. + +- Added support for ranges with mutable `begin` and `end` + (https://github.com/fmtlib/fmt/issues/3752, + https://github.com/fmtlib/fmt/pull/3800, + https://github.com/fmtlib/fmt/pull/3955). Thanks @tcbrindle and @Arghnews. + +- Added support for move-only iterators to `fmt::join` + (https://github.com/fmtlib/fmt/issues/3802, + https://github.com/fmtlib/fmt/pull/3946). Thanks @Arghnews. + +- Moved range and iterator overloads of `fmt::join` to `fmt/ranges.h`, next + to other overloads. + +- Fixed handling of types with `begin` returning `void` such as Eigen matrices + (https://github.com/fmtlib/fmt/issues/3839, + https://github.com/fmtlib/fmt/pull/3964). Thanks @Arghnews. + +- Added an `fmt::formattable` concept (https://github.com/fmtlib/fmt/pull/3974). + Thanks @matt77hias. + +- Added support for `__float128` (https://github.com/fmtlib/fmt/issues/3494). + +- Fixed rounding issues when formatting `long double` with fixed precision + (https://github.com/fmtlib/fmt/issues/3539). + +- Made `fmt::isnan` not trigger floating-point exception for NaN values + (https://github.com/fmtlib/fmt/issues/3948, + https://github.com/fmtlib/fmt/pull/3951). Thanks @alexdewar. + +- Removed dependency on `` for `std::allocator_traits` when possible + (https://github.com/fmtlib/fmt/pull/3804). Thanks @phprus. + +- Enabled compile-time checks in formatting functions that take text colors and + styles. + +- Deprecated wide stream overloads of `fmt::print` that take text styles. + +- Made format string compilation work with clang 12 and later despite + only partial non-type template parameter support + (https://github.com/fmtlib/fmt/issues/4000, + https://github.com/fmtlib/fmt/pull/4001). Thanks @yujincheng08. + +- Made `fmt::iterator_buffer`'s move constructor `noexcept` + (https://github.com/fmtlib/fmt/pull/3808). Thanks @waywardmonkeys. + +- Started enforcing that `formatter::format` is const for compatibility + with `std::format` (https://github.com/fmtlib/fmt/issues/3447). + +- Added `fmt::basic_format_arg::visit` and deprecated `fmt::visit_format_arg`. + +- Made `fmt::basic_string_view` not constructible from `nullptr` for + consistency with `std::string_view` in C++23 + (https://github.com/fmtlib/fmt/pull/3846). Thanks @dalle. + +- Fixed `fmt::group_digits` for negative integers + (https://github.com/fmtlib/fmt/issues/3891, + https://github.com/fmtlib/fmt/pull/3901). Thanks @phprus. + +- Fixed handling of negative ids in `fmt::basic_format_args::get` + (https://github.com/fmtlib/fmt/pull/3945). Thanks @marlenecota. + +- Improved named argument validation + (https://github.com/fmtlib/fmt/issues/3817). + +- Disabled copy construction/assignment for `fmt::format_arg_store` and + fixed moved construction (https://github.com/fmtlib/fmt/pull/3833). + Thanks @ivafanas. + +- Worked around a locale issue in RHEL/devtoolset + (https://github.com/fmtlib/fmt/issues/3858, + https://github.com/fmtlib/fmt/pull/3859). Thanks @g199209. + +- Added RTTI detection for MSVC (https://github.com/fmtlib/fmt/pull/3821, + https://github.com/fmtlib/fmt/pull/3963). Thanks @edo9300. + +- Migrated the documentation from Sphinx to MkDocs. + +- Improved documentation and README + (https://github.com/fmtlib/fmt/issues/3775, + https://github.com/fmtlib/fmt/pull/3784, + https://github.com/fmtlib/fmt/issues/3788, + https://github.com/fmtlib/fmt/pull/3789, + https://github.com/fmtlib/fmt/pull/3793, + https://github.com/fmtlib/fmt/issues/3818, + https://github.com/fmtlib/fmt/pull/3820, + https://github.com/fmtlib/fmt/pull/3822, + https://github.com/fmtlib/fmt/pull/3843, + https://github.com/fmtlib/fmt/pull/3890, + https://github.com/fmtlib/fmt/issues/3894, + https://github.com/fmtlib/fmt/pull/3895, + https://github.com/fmtlib/fmt/pull/3905, + https://github.com/fmtlib/fmt/issues/3942, + https://github.com/fmtlib/fmt/pull/4008). + Thanks @zencatalyst, WolleTD, @tupaschoal, @Dobiasd, @frank-weinberg, @bbolli, + @phprus, @waywardmonkeys, @js324 and @tchaikov. + +- Improved CI and tests + (https://github.com/fmtlib/fmt/issues/3878, + https://github.com/fmtlib/fmt/pull/3883, + https://github.com/fmtlib/fmt/issues/3897, + https://github.com/fmtlib/fmt/pull/3979, + https://github.com/fmtlib/fmt/pull/3980, + https://github.com/fmtlib/fmt/pull/3988, + https://github.com/fmtlib/fmt/pull/4010, + https://github.com/fmtlib/fmt/pull/4012, + https://github.com/fmtlib/fmt/pull/4038). + Thanks @vgorrX, @waywardmonkeys, @tchaikov and @phprus. + +- Fixed buffer overflow when using format string compilation with debug format + and `std::back_insert_iterator` (https://github.com/fmtlib/fmt/issues/3795, + https://github.com/fmtlib/fmt/pull/3797). Thanks @phprus. + +- Improved Bazel support + (https://github.com/fmtlib/fmt/pull/3792, + https://github.com/fmtlib/fmt/pull/3801, + https://github.com/fmtlib/fmt/pull/3962, + https://github.com/fmtlib/fmt/pull/3965). Thanks @Vertexwahn. + +- Improved/fixed the CMake config + (https://github.com/fmtlib/fmt/issues/3777, + https://github.com/fmtlib/fmt/pull/3783, + https://github.com/fmtlib/fmt/issues/3847, + https://github.com/fmtlib/fmt/pull/3907). Thanks @phprus and @xTachyon. + +- Fixed various warnings and compilation issues + (https://github.com/fmtlib/fmt/issues/3685, + https://github.com/fmtlib/fmt/issues/3769, + https://github.com/fmtlib/fmt/issues/3796, + https://github.com/fmtlib/fmt/issues/3803, + https://github.com/fmtlib/fmt/pull/3806, + https://github.com/fmtlib/fmt/pull/3807, + https://github.com/fmtlib/fmt/issues/3809, + https://github.com/fmtlib/fmt/pull/3810, + https://github.com/fmtlib/fmt/issues/3830, + https://github.com/fmtlib/fmt/pull/3832, + https://github.com/fmtlib/fmt/issues/3835, + https://github.com/fmtlib/fmt/pull/3844, + https://github.com/fmtlib/fmt/issues/3854, + https://github.com/fmtlib/fmt/pull/3856, + https://github.com/fmtlib/fmt/pull/3865, + https://github.com/fmtlib/fmt/pull/3866, + https://github.com/fmtlib/fmt/pull/3880, + https://github.com/fmtlib/fmt/issues/3881, + https://github.com/fmtlib/fmt/issues/3884, + https://github.com/fmtlib/fmt/issues/3898, + https://github.com/fmtlib/fmt/pull/3899, + https://github.com/fmtlib/fmt/pull/3909, + https://github.com/fmtlib/fmt/pull/3917, + https://github.com/fmtlib/fmt/pull/3923, + https://github.com/fmtlib/fmt/pull/3924, + https://github.com/fmtlib/fmt/issues/3925, + https://github.com/fmtlib/fmt/pull/3930, + https://github.com/fmtlib/fmt/pull/3931, + https://github.com/fmtlib/fmt/pull/3933, + https://github.com/fmtlib/fmt/issues/3935, + https://github.com/fmtlib/fmt/pull/3937, + https://github.com/fmtlib/fmt/pull/3967, + https://github.com/fmtlib/fmt/pull/3968, + https://github.com/fmtlib/fmt/pull/3972, + https://github.com/fmtlib/fmt/pull/3983, + https://github.com/fmtlib/fmt/issues/3992, + https://github.com/fmtlib/fmt/pull/3995, + https://github.com/fmtlib/fmt/pull/4009, + https://github.com/fmtlib/fmt/pull/4023). + Thanks @hmbj, @phprus, @res2k, @Baardi, @matt77hias, @waywardmonkeys, @hmbj, + @yakra, @prlw1, @Arghnews, @mtillmann0, @ShifftC, @eepp, @jimmy-park and + @ChristianGebhardt. + +# 10.2.1 - 2024-01-04 + +- Fixed ABI compatibility with earlier 10.x versions + (https://github.com/fmtlib/fmt/issues/3785, + https://github.com/fmtlib/fmt/pull/3786). Thanks @saraedum. + +# 10.2.0 - 2024-01-01 + +- Added support for the `%j` specifier (the number of days) for + `std::chrono::duration` (https://github.com/fmtlib/fmt/issues/3643, + https://github.com/fmtlib/fmt/pull/3732). Thanks @intelfx. + +- Added support for the chrono suffix for days and changed + the suffix for minutes from "m" to the correct "min" + (https://github.com/fmtlib/fmt/issues/3662, + https://github.com/fmtlib/fmt/pull/3664). + For example ([godbolt](https://godbolt.org/z/9KhMnq9ba)): + + ```c++ + #include + + int main() { + fmt::print("{}\n", std::chrono::days(42)); // prints "42d" + } + ``` + + Thanks @Richardk2n. + +- Fixed an overflow in `std::chrono::time_point` formatting with large dates + (https://github.com/fmtlib/fmt/issues/3725, + https://github.com/fmtlib/fmt/pull/3727). Thanks @cschreib. + +- Added a formatter for `std::source_location` + (https://github.com/fmtlib/fmt/pull/3730). + For example ([godbolt](https://godbolt.org/z/YajfKjhhr)): + + ```c++ + #include + #include + + int main() { + fmt::print("{}\n", std::source_location::current()); + } + ``` + + prints + + ``` + /app/example.cpp:5:51: int main() + ``` + + Thanks @felix642. + +- Added a formatter for `std::bitset` + (https://github.com/fmtlib/fmt/pull/3660). + For example ([godbolt](https://godbolt.org/z/bdEaGeYxe)): + + ```c++ + #include + #include + + int main() { + fmt::print("{}\n", std::bitset<6>(42)); // prints "101010" + } + ``` + + Thanks @muggenhor. + +- Added an experimental `nested_formatter` that provides an easy way of + applying a formatter to one or more subobjects while automatically handling + width, fill and alignment. For example: + + ```c++ + #include + + struct point { + double x, y; + }; + + template <> + struct fmt::formatter : nested_formatter { + auto format(point p, format_context& ctx) const { + return write_padded(ctx, [=](auto out) { + return format_to(out, "({}, {})", nested(p.x), nested(p.y)); + }); + } + }; + + int main() { + fmt::print("[{:>20.2f}]", point{1, 2}); + } + ``` + + prints + + ``` + [ (1.00, 2.00)] + ``` + +- Added the generic representation (`g`) to `std::filesystem::path` + (https://github.com/fmtlib/fmt/issues/3715, + https://github.com/fmtlib/fmt/pull/3729). For example: + + ```c++ + #include + #include + + int main() { + fmt::print("{:g}\n", std::filesystem::path("C:\\foo")); + } + ``` + + prints `"C:/foo"` on Windows. + + Thanks @js324. + +- Made `format_as` work with references + (https://github.com/fmtlib/fmt/pull/3739). Thanks @tchaikov. + +- Fixed formatting of invalid UTF-8 with precision + (https://github.com/fmtlib/fmt/issues/3284). + +- Fixed an inconsistency between `fmt::to_string` and `fmt::format` + (https://github.com/fmtlib/fmt/issues/3684). + +- Disallowed unsafe uses of `fmt::styled` + (https://github.com/fmtlib/fmt/issues/3625): + + ```c++ + auto s = fmt::styled(std::string("dangle"), fmt::emphasis::bold); + fmt::print("{}\n", s); // compile error + ``` + + Pass `fmt::styled(...)` as a parameter instead. + +- Added a null check when formatting a C string with the `s` specifier + (https://github.com/fmtlib/fmt/issues/3706). + +- Disallowed the `c` specifier for `bool` + (https://github.com/fmtlib/fmt/issues/3726, + https://github.com/fmtlib/fmt/pull/3734). Thanks @js324. + +- Made the default formatting unlocalized in `fmt::ostream_formatter` for + consistency with the rest of the library + (https://github.com/fmtlib/fmt/issues/3460). + +- Fixed localized formatting in bases other than decimal + (https://github.com/fmtlib/fmt/issues/3693, + https://github.com/fmtlib/fmt/pull/3750). Thanks @js324. + +- Fixed a performance regression in experimental `fmt::ostream::print` + (https://github.com/fmtlib/fmt/issues/3674). + +- Added synchronization with the underlying output stream when writing to + the Windows console + (https://github.com/fmtlib/fmt/pull/3668, + https://github.com/fmtlib/fmt/issues/3688, + https://github.com/fmtlib/fmt/pull/3689). + Thanks @Roman-Koshelev and @dimztimz. + +- Changed to only export `format_error` when {fmt} is built as a shared + library (https://github.com/fmtlib/fmt/issues/3626, + https://github.com/fmtlib/fmt/pull/3627). Thanks @phprus. + +- Made `fmt::streamed` `constexpr`. + (https://github.com/fmtlib/fmt/pull/3650). Thanks @muggenhor. + +- Made `fmt::format_int` `constexpr` + (https://github.com/fmtlib/fmt/issues/4031, + https://github.com/fmtlib/fmt/pull/4032). Thanks @dixlorenz. + +- Enabled `consteval` on older versions of MSVC + (https://github.com/fmtlib/fmt/pull/3757). Thanks @phprus. + +- Added an option to build without `wchar_t` support on Windows + (https://github.com/fmtlib/fmt/issues/3631, + https://github.com/fmtlib/fmt/pull/3636). Thanks @glebm. + +- Improved build and CI configuration + (https://github.com/fmtlib/fmt/pull/3679, + https://github.com/fmtlib/fmt/issues/3701, + https://github.com/fmtlib/fmt/pull/3702, + https://github.com/fmtlib/fmt/pull/3749). + Thanks @jcar87, @pklima and @tchaikov. + +- Fixed various warnings, compilation and test issues + (https://github.com/fmtlib/fmt/issues/3607, + https://github.com/fmtlib/fmt/pull/3610, + https://github.com/fmtlib/fmt/pull/3624, + https://github.com/fmtlib/fmt/pull/3630, + https://github.com/fmtlib/fmt/pull/3634, + https://github.com/fmtlib/fmt/pull/3638, + https://github.com/fmtlib/fmt/issues/3645, + https://github.com/fmtlib/fmt/issues/3646, + https://github.com/fmtlib/fmt/pull/3647, + https://github.com/fmtlib/fmt/pull/3652, + https://github.com/fmtlib/fmt/issues/3654, + https://github.com/fmtlib/fmt/pull/3663, + https://github.com/fmtlib/fmt/issues/3670, + https://github.com/fmtlib/fmt/pull/3680, + https://github.com/fmtlib/fmt/issues/3694, + https://github.com/fmtlib/fmt/pull/3695, + https://github.com/fmtlib/fmt/pull/3699, + https://github.com/fmtlib/fmt/issues/3705, + https://github.com/fmtlib/fmt/issues/3710, + https://github.com/fmtlib/fmt/issues/3712, + https://github.com/fmtlib/fmt/pull/3713, + https://github.com/fmtlib/fmt/issues/3714, + https://github.com/fmtlib/fmt/pull/3716, + https://github.com/fmtlib/fmt/pull/3723, + https://github.com/fmtlib/fmt/issues/3738, + https://github.com/fmtlib/fmt/issues/3740, + https://github.com/fmtlib/fmt/pull/3741, + https://github.com/fmtlib/fmt/pull/3743, + https://github.com/fmtlib/fmt/issues/3745, + https://github.com/fmtlib/fmt/pull/3747, + https://github.com/fmtlib/fmt/pull/3748, + https://github.com/fmtlib/fmt/pull/3751, + https://github.com/fmtlib/fmt/pull/3754, + https://github.com/fmtlib/fmt/pull/3755, + https://github.com/fmtlib/fmt/issues/3760, + https://github.com/fmtlib/fmt/pull/3762, + https://github.com/fmtlib/fmt/issues/3763, + https://github.com/fmtlib/fmt/pull/3764, + https://github.com/fmtlib/fmt/issues/3774, + https://github.com/fmtlib/fmt/pull/3779). + Thanks @danakj, @vinayyadav3016, @cyyever, @phprus, @qimiko, @saschasc, + @gsjaardema, @lazka, @Zhaojun-Liu, @carlsmedstad, @hotwatermorning, + @cptFracassa, @kuguma, @PeterJohnson, @H1X4Dev, @asantoni, @eltociear, + @msimberg, @tchaikov, @waywardmonkeys. + +- Improved documentation and README + (https://github.com/fmtlib/fmt/issues/2086, + https://github.com/fmtlib/fmt/issues/3637, + https://github.com/fmtlib/fmt/pull/3642, + https://github.com/fmtlib/fmt/pull/3653, + https://github.com/fmtlib/fmt/pull/3655, + https://github.com/fmtlib/fmt/pull/3661, + https://github.com/fmtlib/fmt/issues/3673, + https://github.com/fmtlib/fmt/pull/3677, + https://github.com/fmtlib/fmt/pull/3737, + https://github.com/fmtlib/fmt/issues/3742, + https://github.com/fmtlib/fmt/pull/3744). + Thanks @idzm, @perlun, @joycebrum, @fennewald, @reinhardt1053, @GeorgeLS. + +- Updated CI dependencies + (https://github.com/fmtlib/fmt/pull/3615, + https://github.com/fmtlib/fmt/pull/3622, + https://github.com/fmtlib/fmt/pull/3623, + https://github.com/fmtlib/fmt/pull/3666, + https://github.com/fmtlib/fmt/pull/3696, + https://github.com/fmtlib/fmt/pull/3697, + https://github.com/fmtlib/fmt/pull/3759, + https://github.com/fmtlib/fmt/pull/3782). + +# 10.1.1 - 2023-08-28 + +- Added formatters for `std::atomic` and `atomic_flag` + (https://github.com/fmtlib/fmt/pull/3574, + https://github.com/fmtlib/fmt/pull/3594). + Thanks @wangzw and @AlexGuteniev. +- Fixed an error about partial specialization of `formatter` + after instantiation when compiled with gcc and C++20 + (https://github.com/fmtlib/fmt/issues/3584). +- Fixed compilation as a C++20 module with gcc and clang + (https://github.com/fmtlib/fmt/issues/3587, + https://github.com/fmtlib/fmt/pull/3597, + https://github.com/fmtlib/fmt/pull/3605). + Thanks @MathewBensonCode. +- Made `fmt::to_string` work with types that have `format_as` + overloads (https://github.com/fmtlib/fmt/pull/3575). Thanks @phprus. +- Made `formatted_size` work with integral format specifiers at + compile time (https://github.com/fmtlib/fmt/pull/3591). + Thanks @elbeno. +- Fixed a warning about the `no_unique_address` attribute on clang-cl + (https://github.com/fmtlib/fmt/pull/3599). Thanks @lukester1975. +- Improved compatibility with the legacy GBK encoding + (https://github.com/fmtlib/fmt/issues/3598, + https://github.com/fmtlib/fmt/pull/3599). Thanks @YuHuanTin. +- Added OpenSSF Scorecard analysis + (https://github.com/fmtlib/fmt/issues/3530, + https://github.com/fmtlib/fmt/pull/3571). Thanks @joycebrum. +- Updated CI dependencies + (https://github.com/fmtlib/fmt/pull/3591, + https://github.com/fmtlib/fmt/pull/3592, + https://github.com/fmtlib/fmt/pull/3593, + https://github.com/fmtlib/fmt/pull/3602). + +# 10.1.0 - 2023-08-12 + +- Optimized format string compilation resulting in up to 40% speed up + in compiled `format_to` and \~4x speed up in compiled `format_to_n` + on a concatenation benchmark + (https://github.com/fmtlib/fmt/issues/3133, + https://github.com/fmtlib/fmt/issues/3484). + + {fmt} 10.0: + + --------------------------------------------------------- + Benchmark Time CPU Iterations + --------------------------------------------------------- + BM_format_to 78.9 ns 78.9 ns 8881746 + BM_format_to_n 568 ns 568 ns 1232089 + + {fmt} 10.1: + + --------------------------------------------------------- + Benchmark Time CPU Iterations + --------------------------------------------------------- + BM_format_to 54.9 ns 54.9 ns 12727944 + BM_format_to_n 133 ns 133 ns 5257795 + +- Optimized storage of an empty allocator in `basic_memory_buffer` + (https://github.com/fmtlib/fmt/pull/3485). Thanks @Minty-Meeo. + +- Added formatters for proxy references to elements of + `std::vector` and `std::bitset` + (https://github.com/fmtlib/fmt/issues/3567, + https://github.com/fmtlib/fmt/pull/3570). For example + ([godbolt](https://godbolt.org/z/zYb79Pvn8)): + + ```c++ + #include + #include + + int main() { + auto v = std::vector{true}; + fmt::print("{}", v[0]); + } + ``` + + Thanks @phprus and @felix642. + +- Fixed an ambiguous formatter specialization for containers that look + like container adaptors such as `boost::flat_set` + (https://github.com/fmtlib/fmt/issues/3556, + https://github.com/fmtlib/fmt/pull/3561). Thanks @5chmidti. + +- Fixed compilation when formatting durations not convertible from + `std::chrono::seconds` + (https://github.com/fmtlib/fmt/pull/3430). Thanks @patlkli. + +- Made the `formatter` specialization for `char*` const-correct + (https://github.com/fmtlib/fmt/pull/3432). Thanks @timsong-cpp. + +- Made `{}` and `{:}` handled consistently during compile-time checks + (https://github.com/fmtlib/fmt/issues/3526). + +- Disallowed passing temporaries to `make_format_args` to improve API + safety by preventing dangling references. + +- Improved the compile-time error for unformattable types + (https://github.com/fmtlib/fmt/pull/3478). Thanks @BRevzin. + +- Improved the floating-point formatter + (https://github.com/fmtlib/fmt/pull/3448, + https://github.com/fmtlib/fmt/pull/3450). + Thanks @florimond-collette. + +- Fixed handling of precision for `long double` larger than 64 bits. + (https://github.com/fmtlib/fmt/issues/3539, + https://github.com/fmtlib/fmt/issues/3564). + +- Made floating-point and chrono tests less platform-dependent + (https://github.com/fmtlib/fmt/issues/3337, + https://github.com/fmtlib/fmt/issues/3433, + https://github.com/fmtlib/fmt/pull/3434). Thanks @phprus. + +- Removed the remnants of the Grisu floating-point formatter that has + been replaced by Dragonbox in earlier versions. + +- Added `throw_format_error` to the public API + (https://github.com/fmtlib/fmt/pull/3551). Thanks @mjerabek. + +- Made `FMT_THROW` assert even if assertions are disabled when + compiling with exceptions disabled + (https://github.com/fmtlib/fmt/issues/3418, + https://github.com/fmtlib/fmt/pull/3439). Thanks @BRevzin. + +- Made `format_as` and `std::filesystem::path` formatter work with + exotic code unit types. + (https://github.com/fmtlib/fmt/pull/3457, + https://github.com/fmtlib/fmt/pull/3476). Thanks @gix and @hmbj. + +- Added support for the `?` format specifier to + `std::filesystem::path` and made the default unescaped for + consistency with strings. + +- Deprecated the wide stream overload of `printf`. + +- Removed unused `basic_printf_parse_context`. + +- Improved RTTI detection used when formatting exceptions + (https://github.com/fmtlib/fmt/pull/3468). Thanks @danakj. + +- Improved compatibility with VxWorks7 + (https://github.com/fmtlib/fmt/pull/3467). Thanks @wenshan1. + +- Improved documentation + (https://github.com/fmtlib/fmt/issues/3174, + https://github.com/fmtlib/fmt/issues/3423, + https://github.com/fmtlib/fmt/pull/3454, + https://github.com/fmtlib/fmt/issues/3458, + https://github.com/fmtlib/fmt/pull/3461, + https://github.com/fmtlib/fmt/issues/3487, + https://github.com/fmtlib/fmt/pull/3515). + Thanks @zencatalyst, @rlalik and @mikecrowe. + +- Improved build and CI configurations + (https://github.com/fmtlib/fmt/issues/3449, + https://github.com/fmtlib/fmt/pull/3451, + https://github.com/fmtlib/fmt/pull/3452, + https://github.com/fmtlib/fmt/pull/3453, + https://github.com/fmtlib/fmt/pull/3459, + https://github.com/fmtlib/fmt/issues/3481, + https://github.com/fmtlib/fmt/pull/3486, + https://github.com/fmtlib/fmt/issues/3489, + https://github.com/fmtlib/fmt/pull/3496, + https://github.com/fmtlib/fmt/issues/3517, + https://github.com/fmtlib/fmt/pull/3523, + https://github.com/fmtlib/fmt/pull/3563). + Thanks @joycebrum, @glebm, @phprus, @petrmanek, @setoye and @abouvier. + +- Fixed various warnings and compilation issues + (https://github.com/fmtlib/fmt/issues/3408, + https://github.com/fmtlib/fmt/issues/3424, + https://github.com/fmtlib/fmt/issues/3444, + https://github.com/fmtlib/fmt/pull/3446, + https://github.com/fmtlib/fmt/pull/3475, + https://github.com/fmtlib/fmt/pull/3482, + https://github.com/fmtlib/fmt/issues/3492, + https://github.com/fmtlib/fmt/pull/3493, + https://github.com/fmtlib/fmt/pull/3508, + https://github.com/fmtlib/fmt/issues/3509, + https://github.com/fmtlib/fmt/issues/3533, + https://github.com/fmtlib/fmt/pull/3542, + https://github.com/fmtlib/fmt/issues/3543, + https://github.com/fmtlib/fmt/issues/3540, + https://github.com/fmtlib/fmt/pull/3544, + https://github.com/fmtlib/fmt/issues/3548, + https://github.com/fmtlib/fmt/pull/3549, + https://github.com/fmtlib/fmt/pull/3550, + https://github.com/fmtlib/fmt/pull/3552). + Thanks @adesitter, @hmbj, @Minty-Meeo, @phprus, @TobiSchluter, + @kieranclancy, @alexeedm, @jurihock, @Ozomahtli and @razaqq. + +# 10.0.0 - 2023-05-09 + +- Replaced Grisu with a new floating-point formatting algorithm for + given precision (https://github.com/fmtlib/fmt/issues/3262, + https://github.com/fmtlib/fmt/issues/2750, + https://github.com/fmtlib/fmt/pull/3269, + https://github.com/fmtlib/fmt/pull/3276). The new algorithm + is based on Dragonbox already used for the shortest representation + and gives substantial performance improvement: + + ![](https://user-images.githubusercontent.com/33922675/211956670-84891a09-6867-47d9-82fc-3230da7abe0f.png) + + - Red: new algorithm + - Green: new algorithm with `FMT_USE_FULL_CACHE_DRAGONBOX` defined + to 1 + - Blue: old algorithm + + Thanks @jk-jeon. + +- Replaced `snprintf`-based hex float formatter with an internal + implementation (https://github.com/fmtlib/fmt/pull/3179, + https://github.com/fmtlib/fmt/pull/3203). This removes the + last usage of `s(n)printf` in {fmt}. Thanks @phprus. + +- Fixed alignment of floating-point numbers with localization + (https://github.com/fmtlib/fmt/issues/3263, + https://github.com/fmtlib/fmt/pull/3272). Thanks @ShawnZhong. + +- Made handling of `#` consistent with `std::format`. + +- Improved C++20 module support + (https://github.com/fmtlib/fmt/pull/3134, + https://github.com/fmtlib/fmt/pull/3254, + https://github.com/fmtlib/fmt/pull/3386, + https://github.com/fmtlib/fmt/pull/3387, + https://github.com/fmtlib/fmt/pull/3388, + https://github.com/fmtlib/fmt/pull/3392, + https://github.com/fmtlib/fmt/pull/3397, + https://github.com/fmtlib/fmt/pull/3399, + https://github.com/fmtlib/fmt/pull/3400). + Thanks @laitingsheng, @Orvid and @DanielaE. + +- Switched to the [modules CMake library](https://github.com/vitaut/modules) + which allows building {fmt} as a C++20 module with clang: + + CXX=clang++ cmake -DFMT_MODULE=ON . + make + +- Made `format_as` work with any user-defined type and not just enums. + For example ([godbolt](https://godbolt.org/z/b7rqhq5Kh)): + + ```c++ + #include + + struct floaty_mc_floatface { + double value; + }; + + auto format_as(floaty_mc_floatface f) { return f.value; } + + int main() { + fmt::print("{:8}\n", floaty_mc_floatface{0.42}); // prints " 0.42" + } + ``` + +- Removed deprecated implicit conversions for enums and conversions to + primitive types for compatibility with `std::format` and to prevent + potential ODR violations. Use `format_as` instead. + +- Added support for fill, align and width to the time point formatter + (https://github.com/fmtlib/fmt/issues/3237, + https://github.com/fmtlib/fmt/pull/3260, + https://github.com/fmtlib/fmt/pull/3275). For example + ([godbolt](https://godbolt.org/z/rKP6MGz6c)): + + ```c++ + #include + + int main() { + // prints " 2023" + fmt::print("{:>8%Y}\n", std::chrono::system_clock::now()); + } + ``` + + Thanks @ShawnZhong. + +- Implemented formatting of subseconds + (https://github.com/fmtlib/fmt/issues/2207, + https://github.com/fmtlib/fmt/issues/3117, + https://github.com/fmtlib/fmt/pull/3115, + https://github.com/fmtlib/fmt/pull/3143, + https://github.com/fmtlib/fmt/pull/3144, + https://github.com/fmtlib/fmt/pull/3349). For example + ([godbolt](https://godbolt.org/z/45738oGEo)): + + ```c++ + #include + + int main() { + // prints 01.234567 + fmt::print("{:%S}\n", std::chrono::microseconds(1234567)); + } + ``` + + Thanks @patrickroocks @phprus and @BRevzin. + +- Added precision support to `%S` + (https://github.com/fmtlib/fmt/pull/3148). Thanks @SappyJoy + +- Added support for `std::utc_time` + (https://github.com/fmtlib/fmt/issues/3098, + https://github.com/fmtlib/fmt/pull/3110). Thanks @patrickroocks. + +- Switched formatting of `std::chrono::system_clock` from local time + to UTC for compatibility with the standard + (https://github.com/fmtlib/fmt/issues/3199, + https://github.com/fmtlib/fmt/pull/3230). Thanks @ned14. + +- Added support for `%Ez` and `%Oz` to chrono formatters. + (https://github.com/fmtlib/fmt/issues/3220, + https://github.com/fmtlib/fmt/pull/3222). Thanks @phprus. + +- Improved validation of format specifiers for `std::chrono::duration` + (https://github.com/fmtlib/fmt/issues/3219, + https://github.com/fmtlib/fmt/pull/3232). Thanks @ShawnZhong. + +- Fixed formatting of time points before the epoch + (https://github.com/fmtlib/fmt/issues/3117, + https://github.com/fmtlib/fmt/pull/3261). For example + ([godbolt](https://godbolt.org/z/f7bcznb3W)): + + ```c++ + #include + + int main() { + auto t = std::chrono::system_clock::from_time_t(0) - + std::chrono::milliseconds(250); + fmt::print("{:%S}\n", t); // prints 59.750000000 + } + ``` + + Thanks @ShawnZhong. + +- Experimental: implemented glibc extension for padding seconds, + minutes and hours + (https://github.com/fmtlib/fmt/issues/2959, + https://github.com/fmtlib/fmt/pull/3271). Thanks @ShawnZhong. + +- Added a formatter for `std::exception` + (https://github.com/fmtlib/fmt/issues/2977, + https://github.com/fmtlib/fmt/issues/3012, + https://github.com/fmtlib/fmt/pull/3062, + https://github.com/fmtlib/fmt/pull/3076, + https://github.com/fmtlib/fmt/pull/3119). For example + ([godbolt](https://godbolt.org/z/8xoWGs9e4)): + + ```c++ + #include + #include + + int main() { + try { + std::vector().at(0); + } catch(const std::exception& e) { + fmt::print("{}", e); + } + } + ``` + + prints: + + vector::_M_range_check: __n (which is 0) >= this->size() (which is 0) + + on libstdc++. Thanks @zach2good and @phprus. + +- Moved `std::error_code` formatter from `fmt/os.h` to `fmt/std.h`. + (https://github.com/fmtlib/fmt/pull/3125). Thanks @phprus. + +- Added formatters for standard container adapters: + `std::priority_queue`, `std::queue` and `std::stack` + (https://github.com/fmtlib/fmt/issues/3215, + https://github.com/fmtlib/fmt/pull/3279). For example + ([godbolt](https://godbolt.org/z/74h1xY9qK)): + + ```c++ + #include + #include + #include + + int main() { + auto s = std::stack>(); + for (auto b: {true, false, true}) s.push(b); + fmt::print("{}\n", s); // prints [true, false, true] + } + ``` + + Thanks @ShawnZhong. + +- Added a formatter for `std::optional` to `fmt/std.h` + (https://github.com/fmtlib/fmt/issues/1367, + https://github.com/fmtlib/fmt/pull/3303). + Thanks @tom-huntington. + +- Fixed formatting of valueless by exception variants + (https://github.com/fmtlib/fmt/pull/3347). Thanks @TheOmegaCarrot. + +- Made `fmt::ptr` accept `unique_ptr` with a custom deleter + (https://github.com/fmtlib/fmt/pull/3177). Thanks @hmbj. + +- Fixed formatting of noncopyable ranges and nested ranges of chars + (https://github.com/fmtlib/fmt/pull/3158 + https://github.com/fmtlib/fmt/issues/3286, + https://github.com/fmtlib/fmt/pull/3290). Thanks @BRevzin. + +- Fixed issues with formatting of paths and ranges of paths + (https://github.com/fmtlib/fmt/issues/3319, + https://github.com/fmtlib/fmt/pull/3321 + https://github.com/fmtlib/fmt/issues/3322). Thanks @phprus. + +- Improved handling of invalid Unicode in paths. + +- Enabled compile-time checks on Apple clang 14 and later + (https://github.com/fmtlib/fmt/pull/3331). Thanks @cloyce. + +- Improved compile-time checks of named arguments + (https://github.com/fmtlib/fmt/issues/3105, + https://github.com/fmtlib/fmt/pull/3214). Thanks @rbrich. + +- Fixed formatting when both alignment and `0` are given + (https://github.com/fmtlib/fmt/issues/3236, + https://github.com/fmtlib/fmt/pull/3248). Thanks @ShawnZhong. + +- Improved Unicode support in the experimental file API on Windows + (https://github.com/fmtlib/fmt/issues/3234, + https://github.com/fmtlib/fmt/pull/3293). Thanks @Fros1er. + +- Unified UTF transcoding + (https://github.com/fmtlib/fmt/pull/3416). Thanks @phprus. + +- Added support for UTF-8 digit separators via an experimental locale + facet (https://github.com/fmtlib/fmt/issues/1861). For + example ([godbolt](https://godbolt.org/z/f7bcznb3W)): + + ```c++ + auto loc = std::locale( + std::locale(), new fmt::format_facet("’")); + auto s = fmt::format(loc, "{:L}", 1000); + ``` + + where `’` is U+2019 used as a digit separator in the de_CH locale. + +- Added an overload of `formatted_size` that takes a locale + (https://github.com/fmtlib/fmt/issues/3084, + https://github.com/fmtlib/fmt/pull/3087). Thanks @gerboengels. + +- Removed the deprecated `FMT_DEPRECATED_OSTREAM`. + +- Fixed a UB when using a null `std::string_view` with + `fmt::to_string` or format string compilation + (https://github.com/fmtlib/fmt/issues/3241, + https://github.com/fmtlib/fmt/pull/3244). Thanks @phprus. + +- Added `starts_with` to the fallback `string_view` implementation + (https://github.com/fmtlib/fmt/pull/3080). Thanks @phprus. + +- Added `fmt::basic_format_string::get()` for compatibility with + `basic_format_string` + (https://github.com/fmtlib/fmt/pull/3111). Thanks @huangqinjin. + +- Added `println` for compatibility with C++23 + (https://github.com/fmtlib/fmt/pull/3267). Thanks @ShawnZhong. + +- Renamed the `FMT_EXPORT` macro for shared library usage to + `FMT_LIB_EXPORT`. + +- Improved documentation + (https://github.com/fmtlib/fmt/issues/3108, + https://github.com/fmtlib/fmt/issues/3169, + https://github.com/fmtlib/fmt/pull/3243). + https://github.com/fmtlib/fmt/pull/3404, + https://github.com/fmtlib/fmt/pull/4002). + Thanks @Cleroth, @Vertexwahn and @yujincheng08. + +- Improved build configuration and tests + (https://github.com/fmtlib/fmt/pull/3118, + https://github.com/fmtlib/fmt/pull/3120, + https://github.com/fmtlib/fmt/pull/3188, + https://github.com/fmtlib/fmt/issues/3189, + https://github.com/fmtlib/fmt/pull/3198, + https://github.com/fmtlib/fmt/pull/3205, + https://github.com/fmtlib/fmt/pull/3207, + https://github.com/fmtlib/fmt/pull/3210, + https://github.com/fmtlib/fmt/pull/3240, + https://github.com/fmtlib/fmt/pull/3256, + https://github.com/fmtlib/fmt/pull/3264, + https://github.com/fmtlib/fmt/issues/3299, + https://github.com/fmtlib/fmt/pull/3302, + https://github.com/fmtlib/fmt/pull/3312, + https://github.com/fmtlib/fmt/issues/3317, + https://github.com/fmtlib/fmt/pull/3328, + https://github.com/fmtlib/fmt/pull/3333, + https://github.com/fmtlib/fmt/pull/3369, + https://github.com/fmtlib/fmt/issues/3373, + https://github.com/fmtlib/fmt/pull/3395, + https://github.com/fmtlib/fmt/pull/3406, + https://github.com/fmtlib/fmt/pull/3411). + Thanks @dimztimz, @phprus, @DavidKorczynski, @ChrisThrasher, + @FrancoisCarouge, @kennyweiss, @luzpaz, @codeinred, @Mixaill, @joycebrum, + @kevinhwang and @Vertexwahn. + +- Fixed a regression in handling empty format specifiers after a colon + (`{:}`) (https://github.com/fmtlib/fmt/pull/3086). Thanks @oxidase. + +- Worked around a broken implementation of + `std::is_constant_evaluated` in some versions of libstdc++ on clang + (https://github.com/fmtlib/fmt/issues/3247, + https://github.com/fmtlib/fmt/pull/3281). Thanks @phprus. + +- Fixed formatting of volatile variables + (https://github.com/fmtlib/fmt/pull/3068). + +- Fixed various warnings and compilation issues + (https://github.com/fmtlib/fmt/pull/3057, + https://github.com/fmtlib/fmt/pull/3066, + https://github.com/fmtlib/fmt/pull/3072, + https://github.com/fmtlib/fmt/pull/3082, + https://github.com/fmtlib/fmt/pull/3091, + https://github.com/fmtlib/fmt/issues/3092, + https://github.com/fmtlib/fmt/pull/3093, + https://github.com/fmtlib/fmt/pull/3095, + https://github.com/fmtlib/fmt/issues/3096, + https://github.com/fmtlib/fmt/pull/3097, + https://github.com/fmtlib/fmt/issues/3128, + https://github.com/fmtlib/fmt/pull/3129, + https://github.com/fmtlib/fmt/pull/3137, + https://github.com/fmtlib/fmt/pull/3139, + https://github.com/fmtlib/fmt/issues/3140, + https://github.com/fmtlib/fmt/pull/3142, + https://github.com/fmtlib/fmt/issues/3149, + https://github.com/fmtlib/fmt/pull/3150, + https://github.com/fmtlib/fmt/issues/3154, + https://github.com/fmtlib/fmt/issues/3163, + https://github.com/fmtlib/fmt/issues/3178, + https://github.com/fmtlib/fmt/pull/3184, + https://github.com/fmtlib/fmt/pull/3196, + https://github.com/fmtlib/fmt/issues/3204, + https://github.com/fmtlib/fmt/pull/3206, + https://github.com/fmtlib/fmt/pull/3208, + https://github.com/fmtlib/fmt/issues/3213, + https://github.com/fmtlib/fmt/pull/3216, + https://github.com/fmtlib/fmt/issues/3224, + https://github.com/fmtlib/fmt/issues/3226, + https://github.com/fmtlib/fmt/issues/3228, + https://github.com/fmtlib/fmt/pull/3229, + https://github.com/fmtlib/fmt/pull/3259, + https://github.com/fmtlib/fmt/issues/3274, + https://github.com/fmtlib/fmt/issues/3287, + https://github.com/fmtlib/fmt/pull/3288, + https://github.com/fmtlib/fmt/issues/3292, + https://github.com/fmtlib/fmt/pull/3295, + https://github.com/fmtlib/fmt/pull/3296, + https://github.com/fmtlib/fmt/issues/3298, + https://github.com/fmtlib/fmt/issues/3325, + https://github.com/fmtlib/fmt/pull/3326, + https://github.com/fmtlib/fmt/issues/3334, + https://github.com/fmtlib/fmt/issues/3342, + https://github.com/fmtlib/fmt/pull/3343, + https://github.com/fmtlib/fmt/issues/3351, + https://github.com/fmtlib/fmt/pull/3352, + https://github.com/fmtlib/fmt/pull/3362, + https://github.com/fmtlib/fmt/issues/3365, + https://github.com/fmtlib/fmt/pull/3366, + https://github.com/fmtlib/fmt/pull/3374, + https://github.com/fmtlib/fmt/issues/3377, + https://github.com/fmtlib/fmt/pull/3378, + https://github.com/fmtlib/fmt/issues/3381, + https://github.com/fmtlib/fmt/pull/3398, + https://github.com/fmtlib/fmt/pull/3413, + https://github.com/fmtlib/fmt/issues/3415). + Thanks @phprus, @gsjaardema, @NewbieOrange, @EngineLessCC, @asmaloney, + @HazardyKnusperkeks, @sergiud, @Youw, @thesmurph, @czudziakm, + @Roman-Koshelev, @chronoxor, @ShawnZhong, @russelltg, @glebm, @tmartin-gh, + @Zhaojun-Liu, @louiswins and @mogemimi. + +# 9.1.0 - 2022-08-27 + +- `fmt::formatted_size` now works at compile time + (https://github.com/fmtlib/fmt/pull/3026). For example + ([godbolt](https://godbolt.org/z/1MW5rMdf8)): + + ```c++ + #include + + int main() { + using namespace fmt::literals; + constexpr size_t n = fmt::formatted_size("{}"_cf, 42); + fmt::print("{}\n", n); // prints 2 + } + ``` + + Thanks @marksantaniello. + +- Fixed handling of invalid UTF-8 + (https://github.com/fmtlib/fmt/pull/3038, + https://github.com/fmtlib/fmt/pull/3044, + https://github.com/fmtlib/fmt/pull/3056). + Thanks @phprus and @skeeto. + +- Improved Unicode support in `ostream` overloads of `print` + (https://github.com/fmtlib/fmt/pull/2994, + https://github.com/fmtlib/fmt/pull/3001, + https://github.com/fmtlib/fmt/pull/3025). Thanks @dimztimz. + +- Fixed handling of the sign specifier in localized formatting on + systems with 32-bit `wchar_t` + (https://github.com/fmtlib/fmt/issues/3041). + +- Added support for wide streams to `fmt::streamed` + (https://github.com/fmtlib/fmt/pull/2994). Thanks @phprus. + +- Added the `n` specifier that disables the output of delimiters when + formatting ranges (https://github.com/fmtlib/fmt/pull/2981, + https://github.com/fmtlib/fmt/pull/2983). For example + ([godbolt](https://godbolt.org/z/roKqGdj8c)): + + ```c++ + #include + #include + + int main() { + auto v = std::vector{1, 2, 3}; + fmt::print("{:n}\n", v); // prints 1, 2, 3 + } + ``` + + Thanks @BRevzin. + +- Worked around problematic `std::string_view` constructors introduced + in C++23 (https://github.com/fmtlib/fmt/issues/3030, + https://github.com/fmtlib/fmt/issues/3050). Thanks @strega-nil-ms. + +- Improve handling (exclusion) of recursive ranges + (https://github.com/fmtlib/fmt/issues/2968, + https://github.com/fmtlib/fmt/pull/2974). Thanks @Dani-Hub. + +- Improved error reporting in format string compilation + (https://github.com/fmtlib/fmt/issues/3055). + +- Improved the implementation of + [Dragonbox](https://github.com/jk-jeon/dragonbox), the algorithm + used for the default floating-point formatting + (https://github.com/fmtlib/fmt/pull/2984). Thanks @jk-jeon. + +- Fixed issues with floating-point formatting on exotic platforms. + +- Improved the implementation of chrono formatting + (https://github.com/fmtlib/fmt/pull/3010). Thanks @phprus. + +- Improved documentation + (https://github.com/fmtlib/fmt/pull/2966, + https://github.com/fmtlib/fmt/pull/3009, + https://github.com/fmtlib/fmt/issues/3020, + https://github.com/fmtlib/fmt/pull/3037). + Thanks @mwinterb, @jcelerier and @remiburtin. + +- Improved build configuration + (https://github.com/fmtlib/fmt/pull/2991, + https://github.com/fmtlib/fmt/pull/2995, + https://github.com/fmtlib/fmt/issues/3004, + https://github.com/fmtlib/fmt/pull/3007, + https://github.com/fmtlib/fmt/pull/3040). + Thanks @dimztimz and @hwhsu1231. + +- Fixed various warnings and compilation issues + (https://github.com/fmtlib/fmt/issues/2969, + https://github.com/fmtlib/fmt/pull/2971, + https://github.com/fmtlib/fmt/issues/2975, + https://github.com/fmtlib/fmt/pull/2982, + https://github.com/fmtlib/fmt/pull/2985, + https://github.com/fmtlib/fmt/issues/2988, + https://github.com/fmtlib/fmt/issues/2989, + https://github.com/fmtlib/fmt/issues/3000, + https://github.com/fmtlib/fmt/issues/3006, + https://github.com/fmtlib/fmt/issues/3014, + https://github.com/fmtlib/fmt/issues/3015, + https://github.com/fmtlib/fmt/pull/3021, + https://github.com/fmtlib/fmt/issues/3023, + https://github.com/fmtlib/fmt/pull/3024, + https://github.com/fmtlib/fmt/pull/3029, + https://github.com/fmtlib/fmt/pull/3043, + https://github.com/fmtlib/fmt/issues/3052, + https://github.com/fmtlib/fmt/pull/3053, + https://github.com/fmtlib/fmt/pull/3054). + Thanks @h-friederich, @dimztimz, @olupton, @bernhardmgruber and @phprus. + +# 9.0.0 - 2022-07-04 + +- Switched to the internal floating point formatter for all decimal + presentation formats. In particular this results in consistent + rounding on all platforms and removing the `s[n]printf` fallback for + decimal FP formatting. + +- Compile-time floating point formatting no longer requires the + header-only mode. For example + ([godbolt](https://godbolt.org/z/G37PTeG3b)): + + ```c++ + #include + #include + + consteval auto compile_time_dtoa(double value) -> std::array { + auto result = std::array(); + fmt::format_to(result.data(), FMT_COMPILE("{}"), value); + return result; + } + + constexpr auto answer = compile_time_dtoa(0.42); + ``` + + works with the default settings. + +- Improved the implementation of + [Dragonbox](https://github.com/jk-jeon/dragonbox), the algorithm + used for the default floating-point formatting + (https://github.com/fmtlib/fmt/pull/2713, + https://github.com/fmtlib/fmt/pull/2750). Thanks @jk-jeon. + +- Made `fmt::to_string` work with `__float128`. This uses the internal + FP formatter and works even on system without `__float128` support + in `[s]printf`. + +- Disabled automatic `std::ostream` insertion operator (`operator<<`) + discovery when `fmt/ostream.h` is included to prevent ODR + violations. You can get the old behavior by defining + `FMT_DEPRECATED_OSTREAM` but this will be removed in the next major + release. Use `fmt::streamed` or `fmt::ostream_formatter` to enable + formatting via `std::ostream` instead. + +- Added `fmt::ostream_formatter` that can be used to write `formatter` + specializations that perform formatting via `std::ostream`. For + example ([godbolt](https://godbolt.org/z/5sEc5qMsf)): + + ```c++ + #include + + struct date { + int year, month, day; + + friend std::ostream& operator<<(std::ostream& os, const date& d) { + return os << d.year << '-' << d.month << '-' << d.day; + } + }; + + template <> struct fmt::formatter : ostream_formatter {}; + + std::string s = fmt::format("The date is {}", date{2012, 12, 9}); + // s == "The date is 2012-12-9" + ``` + +- Added the `fmt::streamed` function that takes an object and formats + it via `std::ostream`. For example + ([godbolt](https://godbolt.org/z/5G3346G1f)): + + ```c++ + #include + #include + + int main() { + fmt::print("Current thread id: {}\n", + fmt::streamed(std::this_thread::get_id())); + } + ``` + + Note that `fmt/std.h` provides a `formatter` specialization for + `std::thread::id` so you don\'t need to format it via + `std::ostream`. + +- Deprecated implicit conversions of unscoped enums to integers for + consistency with scoped enums. + +- Added an argument-dependent lookup based `format_as` extension API + to simplify formatting of enums. + +- Added experimental `std::variant` formatting support + (https://github.com/fmtlib/fmt/pull/2941). For example + ([godbolt](https://godbolt.org/z/KG9z6cq68)): + + ```c++ + #include + #include + + int main() { + auto v = std::variant(42); + fmt::print("{}\n", v); + } + ``` + + prints: + + variant(42) + + Thanks @jehelset. + +- Added experimental `std::filesystem::path` formatting support + (https://github.com/fmtlib/fmt/issues/2865, + https://github.com/fmtlib/fmt/pull/2902, + https://github.com/fmtlib/fmt/issues/2917, + https://github.com/fmtlib/fmt/pull/2918). For example + ([godbolt](https://godbolt.org/z/o44dMexEb)): + + ```c++ + #include + #include + + int main() { + fmt::print("There is no place like {}.", std::filesystem::path("/home")); + } + ``` + + prints: + + There is no place like "/home". + + Thanks @phprus. + +- Added a `std::thread::id` formatter to `fmt/std.h`. For example + ([godbolt](https://godbolt.org/z/j1azbYf3E)): + + ```c++ + #include + #include + + int main() { + fmt::print("Current thread id: {}\n", std::this_thread::get_id()); + } + ``` + +- Added `fmt::styled` that applies a text style to an individual + argument (https://github.com/fmtlib/fmt/pull/2793). For + example ([godbolt](https://godbolt.org/z/vWGW7v5M6)): + + ```c++ + #include + #include + + int main() { + auto now = std::chrono::system_clock::now(); + fmt::print( + "[{}] {}: {}\n", + fmt::styled(now, fmt::emphasis::bold), + fmt::styled("error", fg(fmt::color::red)), + "something went wrong"); + } + ``` + + prints + + ![](https://user-images.githubusercontent.com/576385/175071215-12809244-dab0-4005-96d8-7cd911c964d5.png) + + Thanks @rbrugo. + +- Made `fmt::print` overload for text styles correctly handle UTF-8 + (https://github.com/fmtlib/fmt/issues/2681, + https://github.com/fmtlib/fmt/pull/2701). Thanks @AlexGuteniev. + +- Fixed Unicode handling when writing to an ostream. + +- Added support for nested specifiers to range formatting + (https://github.com/fmtlib/fmt/pull/2673). For example + ([godbolt](https://godbolt.org/z/xd3Gj38cf)): + + ```c++ + #include + #include + + int main() { + fmt::print("{::#x}\n", std::vector{10, 20, 30}); + } + ``` + + prints `[0xa, 0x14, 0x1e]`. + + Thanks @BRevzin. + +- Implemented escaping of wide strings in ranges + (https://github.com/fmtlib/fmt/pull/2904). Thanks @phprus. + +- Added support for ranges with `begin` / `end` found via the + argument-dependent lookup + (https://github.com/fmtlib/fmt/pull/2807). Thanks @rbrugo. + +- Fixed formatting of certain kinds of ranges of ranges + (https://github.com/fmtlib/fmt/pull/2787). Thanks @BRevzin. + +- Fixed handling of maps with element types other than `std::pair` + (https://github.com/fmtlib/fmt/pull/2944). Thanks @BrukerJWD. + +- Made tuple formatter enabled only if elements are formattable + (https://github.com/fmtlib/fmt/issues/2939, + https://github.com/fmtlib/fmt/pull/2940). Thanks @jehelset. + +- Made `fmt::join` compatible with format string compilation + (https://github.com/fmtlib/fmt/issues/2719, + https://github.com/fmtlib/fmt/pull/2720). Thanks @phprus. + +- Made compile-time checks work with named arguments of custom types + and `std::ostream` `print` overloads + (https://github.com/fmtlib/fmt/issues/2816, + https://github.com/fmtlib/fmt/issues/2817, + https://github.com/fmtlib/fmt/pull/2819). Thanks @timsong-cpp. + +- Removed `make_args_checked` because it is no longer needed for + compile-time checks + (https://github.com/fmtlib/fmt/pull/2760). Thanks @phprus. + +- Removed the following deprecated APIs: `_format`, `arg_join`, the + `format_to` overload that takes a memory buffer, `[v]fprintf` that + takes an `ostream`. + +- Removed the deprecated implicit conversion of `[const] signed char*` + and `[const] unsigned char*` to C strings. + +- Removed the deprecated `fmt/locale.h`. + +- Replaced the deprecated `fileno()` with `descriptor()` in + `buffered_file`. + +- Moved `to_string_view` to the `detail` namespace since it\'s an + implementation detail. + +- Made access mode of a created file consistent with `fopen` by + setting `S_IWGRP` and `S_IWOTH` + (https://github.com/fmtlib/fmt/pull/2733). Thanks @arogge. + +- Removed a redundant buffer resize when formatting to `std::ostream` + (https://github.com/fmtlib/fmt/issues/2842, + https://github.com/fmtlib/fmt/pull/2843). Thanks @jcelerier. + +- Made precision computation for strings consistent with width + (https://github.com/fmtlib/fmt/issues/2888). + +- Fixed handling of locale separators in floating point formatting + (https://github.com/fmtlib/fmt/issues/2830). + +- Made sign specifiers work with `__int128_t` + (https://github.com/fmtlib/fmt/issues/2773). + +- Improved support for systems such as CHERI with extra data stored in + pointers (https://github.com/fmtlib/fmt/pull/2932). + Thanks @davidchisnall. + +- Improved documentation + (https://github.com/fmtlib/fmt/pull/2706, + https://github.com/fmtlib/fmt/pull/2712, + https://github.com/fmtlib/fmt/pull/2789, + https://github.com/fmtlib/fmt/pull/2803, + https://github.com/fmtlib/fmt/pull/2805, + https://github.com/fmtlib/fmt/pull/2815, + https://github.com/fmtlib/fmt/pull/2924). + Thanks @BRevzin, @Pokechu22, @setoye, @rtobar, @rbrugo, @anoonD and + @leha-bot. + +- Improved build configuration + (https://github.com/fmtlib/fmt/pull/2766, + https://github.com/fmtlib/fmt/pull/2772, + https://github.com/fmtlib/fmt/pull/2836, + https://github.com/fmtlib/fmt/pull/2852, + https://github.com/fmtlib/fmt/pull/2907, + https://github.com/fmtlib/fmt/pull/2913, + https://github.com/fmtlib/fmt/pull/2914). + Thanks @kambala-decapitator, @mattiasljungstrom, @kieselnb, @nathannaveen + and @Vertexwahn. + +- Fixed various warnings and compilation issues + (https://github.com/fmtlib/fmt/issues/2408, + https://github.com/fmtlib/fmt/issues/2507, + https://github.com/fmtlib/fmt/issues/2697, + https://github.com/fmtlib/fmt/issues/2715, + https://github.com/fmtlib/fmt/issues/2717, + https://github.com/fmtlib/fmt/pull/2722, + https://github.com/fmtlib/fmt/pull/2724, + https://github.com/fmtlib/fmt/pull/2725, + https://github.com/fmtlib/fmt/issues/2726, + https://github.com/fmtlib/fmt/pull/2728, + https://github.com/fmtlib/fmt/pull/2732, + https://github.com/fmtlib/fmt/issues/2738, + https://github.com/fmtlib/fmt/pull/2742, + https://github.com/fmtlib/fmt/issues/2744, + https://github.com/fmtlib/fmt/issues/2745, + https://github.com/fmtlib/fmt/issues/2746, + https://github.com/fmtlib/fmt/issues/2754, + https://github.com/fmtlib/fmt/pull/2755, + https://github.com/fmtlib/fmt/issues/2757, + https://github.com/fmtlib/fmt/pull/2758, + https://github.com/fmtlib/fmt/issues/2761, + https://github.com/fmtlib/fmt/pull/2762, + https://github.com/fmtlib/fmt/issues/2763, + https://github.com/fmtlib/fmt/pull/2765, + https://github.com/fmtlib/fmt/issues/2769, + https://github.com/fmtlib/fmt/pull/2770, + https://github.com/fmtlib/fmt/issues/2771, + https://github.com/fmtlib/fmt/issues/2777, + https://github.com/fmtlib/fmt/pull/2779, + https://github.com/fmtlib/fmt/pull/2782, + https://github.com/fmtlib/fmt/pull/2783, + https://github.com/fmtlib/fmt/issues/2794, + https://github.com/fmtlib/fmt/issues/2796, + https://github.com/fmtlib/fmt/pull/2797, + https://github.com/fmtlib/fmt/pull/2801, + https://github.com/fmtlib/fmt/pull/2802, + https://github.com/fmtlib/fmt/issues/2808, + https://github.com/fmtlib/fmt/issues/2818, + https://github.com/fmtlib/fmt/pull/2819, + https://github.com/fmtlib/fmt/issues/2829, + https://github.com/fmtlib/fmt/issues/2835, + https://github.com/fmtlib/fmt/issues/2848, + https://github.com/fmtlib/fmt/issues/2860, + https://github.com/fmtlib/fmt/pull/2861, + https://github.com/fmtlib/fmt/pull/2882, + https://github.com/fmtlib/fmt/issues/2886, + https://github.com/fmtlib/fmt/issues/2891, + https://github.com/fmtlib/fmt/pull/2892, + https://github.com/fmtlib/fmt/issues/2895, + https://github.com/fmtlib/fmt/issues/2896, + https://github.com/fmtlib/fmt/pull/2903, + https://github.com/fmtlib/fmt/issues/2906, + https://github.com/fmtlib/fmt/issues/2908, + https://github.com/fmtlib/fmt/pull/2909, + https://github.com/fmtlib/fmt/issues/2920, + https://github.com/fmtlib/fmt/pull/2922, + https://github.com/fmtlib/fmt/pull/2927, + https://github.com/fmtlib/fmt/pull/2929, + https://github.com/fmtlib/fmt/issues/2936, + https://github.com/fmtlib/fmt/pull/2937, + https://github.com/fmtlib/fmt/pull/2938, + https://github.com/fmtlib/fmt/pull/2951, + https://github.com/fmtlib/fmt/issues/2954, + https://github.com/fmtlib/fmt/pull/2957, + https://github.com/fmtlib/fmt/issues/2958, + https://github.com/fmtlib/fmt/pull/2960). + Thanks @matrackif @Tobi823, @ivan-volnov, @VasiliPupkin256, + @federico-busato, @barcharcraz, @jk-jeon, @HazardyKnusperkeks, @dalboris, + @seanm, @gsjaardema, @timsong-cpp, @seanm, @frithrah, @chronoxor, @Agga, + @madmaxoft, @JurajX, @phprus and @Dani-Hub. + +# 8.1.1 - 2022-01-06 + +- Restored ABI compatibility with version 8.0.x + (https://github.com/fmtlib/fmt/issues/2695, + https://github.com/fmtlib/fmt/pull/2696). Thanks @saraedum. +- Fixed chrono formatting on big endian systems + (https://github.com/fmtlib/fmt/issues/2698, + https://github.com/fmtlib/fmt/pull/2699). + Thanks @phprus and @xvitaly. +- Fixed a linkage error with mingw + (https://github.com/fmtlib/fmt/issues/2691, + https://github.com/fmtlib/fmt/pull/2692). Thanks @rbberger. + +# 8.1.0 - 2022-01-02 + +- Optimized chrono formatting + (https://github.com/fmtlib/fmt/pull/2500, + https://github.com/fmtlib/fmt/pull/2537, + https://github.com/fmtlib/fmt/issues/2541, + https://github.com/fmtlib/fmt/pull/2544, + https://github.com/fmtlib/fmt/pull/2550, + https://github.com/fmtlib/fmt/pull/2551, + https://github.com/fmtlib/fmt/pull/2576, + https://github.com/fmtlib/fmt/issues/2577, + https://github.com/fmtlib/fmt/pull/2586, + https://github.com/fmtlib/fmt/pull/2591, + https://github.com/fmtlib/fmt/pull/2594, + https://github.com/fmtlib/fmt/pull/2602, + https://github.com/fmtlib/fmt/pull/2617, + https://github.com/fmtlib/fmt/issues/2628, + https://github.com/fmtlib/fmt/pull/2633, + https://github.com/fmtlib/fmt/issues/2670, + https://github.com/fmtlib/fmt/pull/2671). + + Processing of some specifiers such as `%z` and `%Y` is now up to + 10-20 times faster, for example on GCC 11 with libstdc++: + + ---------------------------------------------------------------------------- + Benchmark Before After + ---------------------------------------------------------------------------- + FMTFormatter_z 261 ns 26.3 ns + FMTFormatterCompile_z 246 ns 11.6 ns + FMTFormatter_Y 263 ns 26.1 ns + FMTFormatterCompile_Y 244 ns 10.5 ns + ---------------------------------------------------------------------------- + + Thanks @phprus and @toughengineer. + +- Implemented subsecond formatting for chrono durations + (https://github.com/fmtlib/fmt/pull/2623). For example + ([godbolt](https://godbolt.org/z/es7vWTETe)): + + ```c++ + #include + + int main() { + fmt::print("{:%S}", std::chrono::milliseconds(1234)); + } + ``` + + prints \"01.234\". + + Thanks @matrackif. + +- Fixed handling of precision 0 when formatting chrono durations + (https://github.com/fmtlib/fmt/issues/2587, + https://github.com/fmtlib/fmt/pull/2588). Thanks @lukester1975. + +- Fixed an overflow on invalid inputs in the `tm` formatter + (https://github.com/fmtlib/fmt/pull/2564). Thanks @phprus. + +- Added `fmt::group_digits` that formats integers with a non-localized + digit separator (comma) for groups of three digits. For example + ([godbolt](https://godbolt.org/z/TxGxG9Poq)): + + ```c++ + #include + + int main() { + fmt::print("{} dollars", fmt::group_digits(1000000)); + } + ``` + + prints \"1,000,000 dollars\". + +- Added support for faint, conceal, reverse and blink text styles + (https://github.com/fmtlib/fmt/pull/2394): + + + + Thanks @benit8 and @data-man. + +- Added experimental support for compile-time floating point + formatting (https://github.com/fmtlib/fmt/pull/2426, + https://github.com/fmtlib/fmt/pull/2470). It is currently + limited to the header-only mode. Thanks @alexezeder. + +- Added UDL-based named argument support to compile-time format string + checks (https://github.com/fmtlib/fmt/issues/2640, + https://github.com/fmtlib/fmt/pull/2649). For example + ([godbolt](https://godbolt.org/z/ohGbbvonv)): + + ```c++ + #include + + int main() { + using namespace fmt::literals; + fmt::print("{answer:s}", "answer"_a=42); + } + ``` + + gives a compile-time error on compilers with C++20 `consteval` and + non-type template parameter support (gcc 10+) because `s` is not a + valid format specifier for an integer. + + Thanks @alexezeder. + +- Implemented escaping of string range elements. For example + ([godbolt](https://godbolt.org/z/rKvM1vKf3)): + + ```c++ + #include + #include + + int main() { + fmt::print("{}", std::vector{"\naan"}); + } + ``` + + is now printed as: + + ["\naan"] + + instead of: + + [" + aan"] + +- Added an experimental `?` specifier for escaping strings. + (https://github.com/fmtlib/fmt/pull/2674). Thanks @BRevzin. + +- Switched to JSON-like representation of maps and sets for + consistency with Python\'s `str.format`. For example + ([godbolt](https://godbolt.org/z/seKjoY9W5)): + + ```c++ + #include + #include + + int main() { + fmt::print("{}", std::map{{"answer", 42}}); + } + ``` + + is now printed as: + + {"answer": 42} + +- Extended `fmt::join` to support C++20-only ranges + (https://github.com/fmtlib/fmt/pull/2549). Thanks @BRevzin. + +- Optimized handling of non-const-iterable ranges and implemented + initial support for non-const-formattable types. + +- Disabled implicit conversions of scoped enums to integers that was + accidentally introduced in earlier versions + (https://github.com/fmtlib/fmt/pull/1841). + +- Deprecated implicit conversion of `[const] signed char*` and + `[const] unsigned char*` to C strings. + +- Deprecated `_format`, a legacy UDL-based format API + (https://github.com/fmtlib/fmt/pull/2646). Thanks @alexezeder. + +- Marked `format`, `formatted_size` and `to_string` as `[[nodiscard]]` + (https://github.com/fmtlib/fmt/pull/2612). @0x8000-0000. + +- Added missing diagnostic when trying to format function and member + pointers as well as objects convertible to pointers which is + explicitly disallowed + (https://github.com/fmtlib/fmt/issues/2598, + https://github.com/fmtlib/fmt/pull/2609, + https://github.com/fmtlib/fmt/pull/2610). Thanks @AlexGuteniev. + +- Optimized writing to a contiguous buffer with `format_to_n` + (https://github.com/fmtlib/fmt/pull/2489). Thanks @Roman-Koshelev. + +- Optimized writing to non-`char` buffers + (https://github.com/fmtlib/fmt/pull/2477). Thanks @Roman-Koshelev. + +- Decimal point is now localized when using the `L` specifier. + +- Improved floating point formatter implementation + (https://github.com/fmtlib/fmt/pull/2498, + https://github.com/fmtlib/fmt/pull/2499). Thanks @Roman-Koshelev. + +- Fixed handling of very large precision in fixed format + (https://github.com/fmtlib/fmt/pull/2616). + +- Made a table of cached powers used in FP formatting static + (https://github.com/fmtlib/fmt/pull/2509). Thanks @jk-jeon. + +- Resolved a lookup ambiguity with C++20 format-related functions due + to ADL (https://github.com/fmtlib/fmt/issues/2639, + https://github.com/fmtlib/fmt/pull/2641). Thanks @mkurdej. + +- Removed unnecessary inline namespace qualification + (https://github.com/fmtlib/fmt/issues/2642, + https://github.com/fmtlib/fmt/pull/2643). Thanks @mkurdej. + +- Implemented argument forwarding in `format_to_n` + (https://github.com/fmtlib/fmt/issues/2462, + https://github.com/fmtlib/fmt/pull/2463). Thanks @owent. + +- Fixed handling of implicit conversions in `fmt::to_string` and + format string compilation + (https://github.com/fmtlib/fmt/issues/2565). + +- Changed the default access mode of files created by + `fmt::output_file` to `-rw-r--r--` for consistency with `fopen` + (https://github.com/fmtlib/fmt/issues/2530). + +- Make `fmt::ostream::flush` public + (https://github.com/fmtlib/fmt/issues/2435). + +- Improved C++14/17 attribute detection + (https://github.com/fmtlib/fmt/pull/2615). Thanks @AlexGuteniev. + +- Improved `consteval` detection for MSVC + (https://github.com/fmtlib/fmt/pull/2559). Thanks @DanielaE. + +- Improved documentation + (https://github.com/fmtlib/fmt/issues/2406, + https://github.com/fmtlib/fmt/pull/2446, + https://github.com/fmtlib/fmt/issues/2493, + https://github.com/fmtlib/fmt/issues/2513, + https://github.com/fmtlib/fmt/pull/2515, + https://github.com/fmtlib/fmt/issues/2522, + https://github.com/fmtlib/fmt/pull/2562, + https://github.com/fmtlib/fmt/pull/2575, + https://github.com/fmtlib/fmt/pull/2606, + https://github.com/fmtlib/fmt/pull/2620, + https://github.com/fmtlib/fmt/issues/2676). + Thanks @sobolevn, @UnePierre, @zhsj, @phprus, @ericcurtin and @Lounarok. + +- Improved fuzzers and added a fuzzer for chrono timepoint formatting + (https://github.com/fmtlib/fmt/pull/2461, + https://github.com/fmtlib/fmt/pull/2469). @pauldreik, + +- Added the `FMT_SYSTEM_HEADERS` CMake option setting which marks + {fmt}\'s headers as system. It can be used to suppress warnings + (https://github.com/fmtlib/fmt/issues/2644, + https://github.com/fmtlib/fmt/pull/2651). Thanks @alexezeder. + +- Added the Bazel build system support + (https://github.com/fmtlib/fmt/pull/2505, + https://github.com/fmtlib/fmt/pull/2516). Thanks @Vertexwahn. + +- Improved build configuration and tests + (https://github.com/fmtlib/fmt/issues/2437, + https://github.com/fmtlib/fmt/pull/2558, + https://github.com/fmtlib/fmt/pull/2648, + https://github.com/fmtlib/fmt/pull/2650, + https://github.com/fmtlib/fmt/pull/2663, + https://github.com/fmtlib/fmt/pull/2677). + Thanks @DanielaE, @alexezeder and @phprus. + +- Fixed various warnings and compilation issues + (https://github.com/fmtlib/fmt/pull/2353, + https://github.com/fmtlib/fmt/pull/2356, + https://github.com/fmtlib/fmt/pull/2399, + https://github.com/fmtlib/fmt/issues/2408, + https://github.com/fmtlib/fmt/pull/2414, + https://github.com/fmtlib/fmt/pull/2427, + https://github.com/fmtlib/fmt/pull/2432, + https://github.com/fmtlib/fmt/pull/2442, + https://github.com/fmtlib/fmt/pull/2434, + https://github.com/fmtlib/fmt/issues/2439, + https://github.com/fmtlib/fmt/pull/2447, + https://github.com/fmtlib/fmt/pull/2450, + https://github.com/fmtlib/fmt/issues/2455, + https://github.com/fmtlib/fmt/issues/2465, + https://github.com/fmtlib/fmt/issues/2472, + https://github.com/fmtlib/fmt/issues/2474, + https://github.com/fmtlib/fmt/pull/2476, + https://github.com/fmtlib/fmt/issues/2478, + https://github.com/fmtlib/fmt/issues/2479, + https://github.com/fmtlib/fmt/issues/2481, + https://github.com/fmtlib/fmt/pull/2482, + https://github.com/fmtlib/fmt/pull/2483, + https://github.com/fmtlib/fmt/issues/2490, + https://github.com/fmtlib/fmt/pull/2491, + https://github.com/fmtlib/fmt/pull/2510, + https://github.com/fmtlib/fmt/pull/2518, + https://github.com/fmtlib/fmt/issues/2528, + https://github.com/fmtlib/fmt/pull/2529, + https://github.com/fmtlib/fmt/pull/2539, + https://github.com/fmtlib/fmt/issues/2540, + https://github.com/fmtlib/fmt/pull/2545, + https://github.com/fmtlib/fmt/pull/2555, + https://github.com/fmtlib/fmt/issues/2557, + https://github.com/fmtlib/fmt/issues/2570, + https://github.com/fmtlib/fmt/pull/2573, + https://github.com/fmtlib/fmt/pull/2582, + https://github.com/fmtlib/fmt/issues/2605, + https://github.com/fmtlib/fmt/pull/2611, + https://github.com/fmtlib/fmt/pull/2647, + https://github.com/fmtlib/fmt/issues/2627, + https://github.com/fmtlib/fmt/pull/2630, + https://github.com/fmtlib/fmt/issues/2635, + https://github.com/fmtlib/fmt/issues/2638, + https://github.com/fmtlib/fmt/issues/2653, + https://github.com/fmtlib/fmt/issues/2654, + https://github.com/fmtlib/fmt/issues/2661, + https://github.com/fmtlib/fmt/pull/2664, + https://github.com/fmtlib/fmt/pull/2684). + Thanks @DanielaE, @mwinterb, @cdacamar, @TrebledJ, @bodomartin, @cquammen, + @white238, @mmarkeloff, @palacaze, @jcelerier, @mborn-adi, @BrukerJWD, + @spyridon97, @phprus, @oliverlee, @joshessman-llnl, @akohlmey, @timkalu, + @olupton, @Acretock, @alexezeder, @andrewcorrigan, @lucpelletier and + @HazardyKnusperkeks. + +# 8.0.1 - 2021-07-02 + +- Fixed the version number in the inline namespace + (https://github.com/fmtlib/fmt/issues/2374). +- Added a missing presentation type check for `std::string` + (https://github.com/fmtlib/fmt/issues/2402). +- Fixed a linkage error when mixing code built with clang and gcc + (https://github.com/fmtlib/fmt/issues/2377). +- Fixed documentation issues + (https://github.com/fmtlib/fmt/pull/2396, + https://github.com/fmtlib/fmt/issues/2403, + https://github.com/fmtlib/fmt/issues/2406). Thanks @mkurdej. +- Removed dead code in FP formatter ( + https://github.com/fmtlib/fmt/pull/2398). Thanks @javierhonduco. +- Fixed various warnings and compilation issues + (https://github.com/fmtlib/fmt/issues/2351, + https://github.com/fmtlib/fmt/issues/2359, + https://github.com/fmtlib/fmt/pull/2365, + https://github.com/fmtlib/fmt/issues/2368, + https://github.com/fmtlib/fmt/pull/2370, + https://github.com/fmtlib/fmt/pull/2376, + https://github.com/fmtlib/fmt/pull/2381, + https://github.com/fmtlib/fmt/pull/2382, + https://github.com/fmtlib/fmt/issues/2386, + https://github.com/fmtlib/fmt/pull/2389, + https://github.com/fmtlib/fmt/pull/2395, + https://github.com/fmtlib/fmt/pull/2397, + https://github.com/fmtlib/fmt/issues/2400, + https://github.com/fmtlib/fmt/issues/2401, + https://github.com/fmtlib/fmt/pull/2407). + Thanks @zx2c4, @AidanSun05, @mattiasljungstrom, @joemmett, @erengy, + @patlkli, @gsjaardema and @phprus. + +# 8.0.0 - 2021-06-21 + +- Enabled compile-time format string checks by default. For example + ([godbolt](https://godbolt.org/z/sMxcohGjz)): + + ```c++ + #include + + int main() { + fmt::print("{:d}", "I am not a number"); + } + ``` + + gives a compile-time error on compilers with C++20 `consteval` + support (gcc 10+, clang 11+) because `d` is not a valid format + specifier for a string. + + To pass a runtime string wrap it in `fmt::runtime`: + + ```c++ + fmt::print(fmt::runtime("{:d}"), "I am not a number"); + ``` + +- Added compile-time formatting + (https://github.com/fmtlib/fmt/pull/2019, + https://github.com/fmtlib/fmt/pull/2044, + https://github.com/fmtlib/fmt/pull/2056, + https://github.com/fmtlib/fmt/pull/2072, + https://github.com/fmtlib/fmt/pull/2075, + https://github.com/fmtlib/fmt/issues/2078, + https://github.com/fmtlib/fmt/pull/2129, + https://github.com/fmtlib/fmt/pull/2326). For example + ([godbolt](https://godbolt.org/z/Mxx9d89jM)): + + ```c++ + #include + + consteval auto compile_time_itoa(int value) -> std::array { + auto result = std::array(); + fmt::format_to(result.data(), FMT_COMPILE("{}"), value); + return result; + } + + constexpr auto answer = compile_time_itoa(42); + ``` + + Most of the formatting functionality is available at compile time + with a notable exception of floating-point numbers and pointers. + Thanks @alexezeder. + +- Optimized handling of format specifiers during format string + compilation. For example, hexadecimal formatting (`"{:x}"`) is now + 3-7x faster than before when using `format_to` with format string + compilation and a stack-allocated buffer + (https://github.com/fmtlib/fmt/issues/1944). + + Before (7.1.3): + + ---------------------------------------------------------------------------- + Benchmark Time CPU Iterations + ---------------------------------------------------------------------------- + FMTCompileOld/0 15.5 ns 15.5 ns 43302898 + FMTCompileOld/42 16.6 ns 16.6 ns 43278267 + FMTCompileOld/273123 18.7 ns 18.6 ns 37035861 + FMTCompileOld/9223372036854775807 19.4 ns 19.4 ns 35243000 + ---------------------------------------------------------------------------- + + After (8.x): + + ---------------------------------------------------------------------------- + Benchmark Time CPU Iterations + ---------------------------------------------------------------------------- + FMTCompileNew/0 1.99 ns 1.99 ns 360523686 + FMTCompileNew/42 2.33 ns 2.33 ns 279865664 + FMTCompileNew/273123 3.72 ns 3.71 ns 190230315 + FMTCompileNew/9223372036854775807 5.28 ns 5.26 ns 130711631 + ---------------------------------------------------------------------------- + + It is even faster than `std::to_chars` from libc++ compiled with + clang on macOS: + + ---------------------------------------------------------------------------- + Benchmark Time CPU Iterations + ---------------------------------------------------------------------------- + ToChars/0 4.42 ns 4.41 ns 160196630 + ToChars/42 5.00 ns 4.98 ns 140735201 + ToChars/273123 7.26 ns 7.24 ns 95784130 + ToChars/9223372036854775807 8.77 ns 8.75 ns 75872534 + ---------------------------------------------------------------------------- + + In other cases, especially involving `std::string` construction, the + speed up is usually lower because handling format specifiers takes a + smaller fraction of the total time. + +- Added the `_cf` user-defined literal to represent a compiled format + string. It can be used instead of the `FMT_COMPILE` macro + (https://github.com/fmtlib/fmt/pull/2043, + https://github.com/fmtlib/fmt/pull/2242): + + ```c++ + #include + + using namespace fmt::literals; + auto s = fmt::format(FMT_COMPILE("{}"), 42); // 🙁 not modern + auto s = fmt::format("{}"_cf, 42); // 🙂 modern as hell + ``` + + It requires compiler support for class types in non-type template + parameters (a C++20 feature) which is available in GCC 9.3+. + Thanks @alexezeder. + +- Format string compilation now requires `format` functions of + `formatter` specializations for user-defined types to be `const`: + + ```c++ + template <> struct fmt::formatter: formatter { + template + auto format(my_type obj, FormatContext& ctx) const { // Note const here. + // ... + } + }; + ``` + +- Added UDL-based named argument support to format string compilation + (https://github.com/fmtlib/fmt/pull/2243, + https://github.com/fmtlib/fmt/pull/2281). For example: + + ```c++ + #include + + using namespace fmt::literals; + auto s = fmt::format(FMT_COMPILE("{answer}"), "answer"_a = 42); + ``` + + Here the argument named \"answer\" is resolved at compile time with + no runtime overhead. Thanks @alexezeder. + +- Added format string compilation support to `fmt::print` + (https://github.com/fmtlib/fmt/issues/2280, + https://github.com/fmtlib/fmt/pull/2304). Thanks @alexezeder. + +- Added initial support for compiling {fmt} as a C++20 module + (https://github.com/fmtlib/fmt/pull/2235, + https://github.com/fmtlib/fmt/pull/2240, + https://github.com/fmtlib/fmt/pull/2260, + https://github.com/fmtlib/fmt/pull/2282, + https://github.com/fmtlib/fmt/pull/2283, + https://github.com/fmtlib/fmt/pull/2288, + https://github.com/fmtlib/fmt/pull/2298, + https://github.com/fmtlib/fmt/pull/2306, + https://github.com/fmtlib/fmt/pull/2307, + https://github.com/fmtlib/fmt/pull/2309, + https://github.com/fmtlib/fmt/pull/2318, + https://github.com/fmtlib/fmt/pull/2324, + https://github.com/fmtlib/fmt/pull/2332, + https://github.com/fmtlib/fmt/pull/2340). Thanks @DanielaE. + +- Made symbols private by default reducing shared library size + (https://github.com/fmtlib/fmt/pull/2301). For example + there was a \~15% reported reduction on one platform. Thanks @sergiud. + +- Optimized includes making the result of preprocessing `fmt/format.h` + \~20% smaller with libstdc++/C++20 and slightly improving build + times (https://github.com/fmtlib/fmt/issues/1998). + +- Added support of ranges with non-const `begin` / `end` + (https://github.com/fmtlib/fmt/pull/1953). Thanks @kitegi. + +- Added support of `std::byte` and other formattable types to + `fmt::join` (https://github.com/fmtlib/fmt/issues/1981, + https://github.com/fmtlib/fmt/issues/2040, + https://github.com/fmtlib/fmt/pull/2050, + https://github.com/fmtlib/fmt/issues/2262). For example: + + ```c++ + #include + #include + #include + + int main() { + auto bytes = std::vector{std::byte(4), std::byte(2)}; + fmt::print("{}", fmt::join(bytes, "")); + } + ``` + + prints \"42\". + + Thanks @kamibo. + +- Implemented the default format for `std::chrono::system_clock` + (https://github.com/fmtlib/fmt/issues/2319, + https://github.com/fmtlib/fmt/pull/2345). For example: + + ```c++ + #include + + int main() { + fmt::print("{}", std::chrono::system_clock::now()); + } + ``` + + prints \"2021-06-18 15:22:00\" (the output depends on the current + date and time). Thanks @sunmy2019. + +- Made more chrono specifiers locale independent by default. Use the + `'L'` specifier to get localized formatting. For example: + + ```c++ + #include + + int main() { + std::locale::global(std::locale("ru_RU.UTF-8")); + auto monday = std::chrono::weekday(1); + fmt::print("{}\n", monday); // prints "Mon" + fmt::print("{:L}\n", monday); // prints "пн" + } + ``` + +- Improved locale handling in chrono formatting + (https://github.com/fmtlib/fmt/issues/2337, + https://github.com/fmtlib/fmt/pull/2349, + https://github.com/fmtlib/fmt/pull/2350). Thanks @phprus. + +- Deprecated `fmt/locale.h` moving the formatting functions that take + a locale to `fmt/format.h` (`char`) and `fmt/xchar` (other + overloads). This doesn\'t introduce a dependency on `` so + there is virtually no compile time effect. + +- Deprecated an undocumented `format_to` overload that takes + `basic_memory_buffer`. + +- Made parameter order in `vformat_to` consistent with `format_to` + (https://github.com/fmtlib/fmt/issues/2327). + +- Added support for time points with arbitrary durations + (https://github.com/fmtlib/fmt/issues/2208). For example: + + ```c++ + #include + + int main() { + using tp = std::chrono::time_point< + std::chrono::system_clock, std::chrono::seconds>; + fmt::print("{:%S}", tp(std::chrono::seconds(42))); + } + ``` + + prints \"42\". + +- Formatting floating-point numbers no longer produces trailing zeros + by default for consistency with `std::format`. For example: + + ```c++ + #include + + int main() { + fmt::print("{0:.3}", 1.1); + } + ``` + + prints \"1.1\". Use the `'#'` specifier to keep trailing zeros. + +- Dropped a limit on the number of elements in a range and replaced + `{}` with `[]` as range delimiters for consistency with Python\'s + `str.format`. + +- The `'L'` specifier for locale-specific numeric formatting can now + be combined with presentation specifiers as in `std::format`. For + example: + + ```c++ + #include + #include + + int main() { + std::locale::global(std::locale("fr_FR.UTF-8")); + fmt::print("{0:.2Lf}", 0.42); + } + ``` + + prints \"0,42\". The deprecated `'n'` specifier has been removed. + +- Made the `0` specifier ignored for infinity and NaN + (https://github.com/fmtlib/fmt/issues/2305, + https://github.com/fmtlib/fmt/pull/2310). Thanks @Liedtke. + +- Made the hexfloat formatting use the right alignment by default + (https://github.com/fmtlib/fmt/issues/2308, + https://github.com/fmtlib/fmt/pull/2317). Thanks @Liedtke. + +- Removed the deprecated numeric alignment (`'='`). Use the `'0'` + specifier instead. + +- Removed the deprecated `fmt/posix.h` header that has been replaced + with `fmt/os.h`. + +- Removed the deprecated `format_to_n_context`, `format_to_n_args` and + `make_format_to_n_args`. They have been replaced with + `format_context`, `` format_args` and ``make_format_args\`\` + respectively. + +- Moved `wchar_t`-specific functions and types to `fmt/xchar.h`. You + can define `FMT_DEPRECATED_INCLUDE_XCHAR` to automatically include + `fmt/xchar.h` from `fmt/format.h` but this will be disabled in the + next major release. + +- Fixed handling of the `'+'` specifier in localized formatting + (https://github.com/fmtlib/fmt/issues/2133). + +- Added support for the `'s'` format specifier that gives textual + representation of `bool` + (https://github.com/fmtlib/fmt/issues/2094, + https://github.com/fmtlib/fmt/pull/2109). For example: + + ```c++ + #include + + int main() { + fmt::print("{:s}", true); + } + ``` + + prints \"true\". Thanks @powercoderlol. + +- Made `fmt::ptr` work with function pointers + (https://github.com/fmtlib/fmt/pull/2131). For example: + + ```c++ + #include + + int main() { + fmt::print("My main: {}\n", fmt::ptr(main)); + } + ``` + + Thanks @mikecrowe. + +- The undocumented support for specializing `formatter` for pointer + types has been removed. + +- Fixed `fmt::formatted_size` with format string compilation + (https://github.com/fmtlib/fmt/pull/2141, + https://github.com/fmtlib/fmt/pull/2161). Thanks @alexezeder. + +- Fixed handling of empty format strings during format string + compilation (https://github.com/fmtlib/fmt/issues/2042): + + ```c++ + auto s = fmt::format(FMT_COMPILE("")); + ``` + + Thanks @alexezeder. + +- Fixed handling of enums in `fmt::to_string` + (https://github.com/fmtlib/fmt/issues/2036). + +- Improved width computation + (https://github.com/fmtlib/fmt/issues/2033, + https://github.com/fmtlib/fmt/issues/2091). For example: + + ```c++ + #include + + int main() { + fmt::print("{:-<10}{}\n", "你好", "世界"); + fmt::print("{:-<10}{}\n", "hello", "world"); + } + ``` + + prints + + ![](https://user-images.githubusercontent.com/576385/119840373-cea3ca80-beb9-11eb-91e0-54266c48e181.png) + + on a modern terminal. + +- The experimental fast output stream (`fmt::ostream`) is now + truncated by default for consistency with `fopen` + (https://github.com/fmtlib/fmt/issues/2018). For example: + + ```c++ + #include + + int main() { + fmt::ostream out1 = fmt::output_file("guide"); + out1.print("Zaphod"); + out1.close(); + fmt::ostream out2 = fmt::output_file("guide"); + out2.print("Ford"); + } + ``` + + writes \"Ford\" to the file \"guide\". To preserve the old file + content if any pass `fmt::file::WRONLY | fmt::file::CREATE` flags to + `fmt::output_file`. + +- Fixed moving of `fmt::ostream` that holds buffered data + (https://github.com/fmtlib/fmt/issues/2197, + https://github.com/fmtlib/fmt/pull/2198). Thanks @vtta. + +- Replaced the `fmt::system_error` exception with a function of the + same name that constructs `std::system_error` + (https://github.com/fmtlib/fmt/issues/2266). + +- Replaced the `fmt::windows_error` exception with a function of the + same name that constructs `std::system_error` with the category + returned by `fmt::system_category()` + (https://github.com/fmtlib/fmt/issues/2274, + https://github.com/fmtlib/fmt/pull/2275). The latter is + similar to `std::system_category` but correctly handles UTF-8. + Thanks @phprus. + +- Replaced `fmt::error_code` with `std::error_code` and made it + formattable (https://github.com/fmtlib/fmt/issues/2269, + https://github.com/fmtlib/fmt/pull/2270, + https://github.com/fmtlib/fmt/pull/2273). Thanks @phprus. + +- Added speech synthesis support + (https://github.com/fmtlib/fmt/pull/2206). + +- Made `format_to` work with a memory buffer that has a custom + allocator (https://github.com/fmtlib/fmt/pull/2300). + Thanks @voxmea. + +- Added `Allocator::max_size` support to `basic_memory_buffer`. + (https://github.com/fmtlib/fmt/pull/1960). Thanks @phprus. + +- Added wide string support to `fmt::join` + (https://github.com/fmtlib/fmt/pull/2236). Thanks @crbrz. + +- Made iterators passed to `formatter` specializations via a format + context satisfy C++20 `std::output_iterator` requirements + (https://github.com/fmtlib/fmt/issues/2156, + https://github.com/fmtlib/fmt/pull/2158, + https://github.com/fmtlib/fmt/issues/2195, + https://github.com/fmtlib/fmt/pull/2204). Thanks @randomnetcat. + +- Optimized the `printf` implementation + (https://github.com/fmtlib/fmt/pull/1982, + https://github.com/fmtlib/fmt/pull/1984, + https://github.com/fmtlib/fmt/pull/2016, + https://github.com/fmtlib/fmt/pull/2164). + Thanks @rimathia and @moiwi. + +- Improved detection of `constexpr` `char_traits` + (https://github.com/fmtlib/fmt/pull/2246, + https://github.com/fmtlib/fmt/pull/2257). Thanks @phprus. + +- Fixed writing to `stdout` when it is redirected to `NUL` on Windows + (https://github.com/fmtlib/fmt/issues/2080). + +- Fixed exception propagation from iterators + (https://github.com/fmtlib/fmt/issues/2097). + +- Improved `strftime` error handling + (https://github.com/fmtlib/fmt/issues/2238, + https://github.com/fmtlib/fmt/pull/2244). Thanks @yumeyao. + +- Stopped using deprecated GCC UDL template extension. + +- Added `fmt/args.h` to the install target + (https://github.com/fmtlib/fmt/issues/2096). + +- Error messages are now passed to assert when exceptions are disabled + (https://github.com/fmtlib/fmt/pull/2145). Thanks @NobodyXu. + +- Added the `FMT_MASTER_PROJECT` CMake option to control build and + install targets when {fmt} is included via `add_subdirectory` + (https://github.com/fmtlib/fmt/issues/2098, + https://github.com/fmtlib/fmt/pull/2100). + Thanks @randomizedthinking. + +- Improved build configuration + (https://github.com/fmtlib/fmt/pull/2026, + https://github.com/fmtlib/fmt/pull/2122). + Thanks @luncliff and @ibaned. + +- Fixed various warnings and compilation issues + (https://github.com/fmtlib/fmt/issues/1947, + https://github.com/fmtlib/fmt/pull/1959, + https://github.com/fmtlib/fmt/pull/1963, + https://github.com/fmtlib/fmt/pull/1965, + https://github.com/fmtlib/fmt/issues/1966, + https://github.com/fmtlib/fmt/pull/1974, + https://github.com/fmtlib/fmt/pull/1975, + https://github.com/fmtlib/fmt/pull/1990, + https://github.com/fmtlib/fmt/issues/2000, + https://github.com/fmtlib/fmt/pull/2001, + https://github.com/fmtlib/fmt/issues/2002, + https://github.com/fmtlib/fmt/issues/2004, + https://github.com/fmtlib/fmt/pull/2006, + https://github.com/fmtlib/fmt/pull/2009, + https://github.com/fmtlib/fmt/pull/2010, + https://github.com/fmtlib/fmt/issues/2038, + https://github.com/fmtlib/fmt/issues/2039, + https://github.com/fmtlib/fmt/issues/2047, + https://github.com/fmtlib/fmt/pull/2053, + https://github.com/fmtlib/fmt/issues/2059, + https://github.com/fmtlib/fmt/pull/2065, + https://github.com/fmtlib/fmt/pull/2067, + https://github.com/fmtlib/fmt/pull/2068, + https://github.com/fmtlib/fmt/pull/2073, + https://github.com/fmtlib/fmt/issues/2103, + https://github.com/fmtlib/fmt/issues/2105, + https://github.com/fmtlib/fmt/pull/2106, + https://github.com/fmtlib/fmt/pull/2107, + https://github.com/fmtlib/fmt/issues/2116, + https://github.com/fmtlib/fmt/pull/2117, + https://github.com/fmtlib/fmt/issues/2118, + https://github.com/fmtlib/fmt/pull/2119, + https://github.com/fmtlib/fmt/issues/2127, + https://github.com/fmtlib/fmt/pull/2128, + https://github.com/fmtlib/fmt/issues/2140, + https://github.com/fmtlib/fmt/issues/2142, + https://github.com/fmtlib/fmt/pull/2143, + https://github.com/fmtlib/fmt/pull/2144, + https://github.com/fmtlib/fmt/issues/2147, + https://github.com/fmtlib/fmt/issues/2148, + https://github.com/fmtlib/fmt/issues/2149, + https://github.com/fmtlib/fmt/pull/2152, + https://github.com/fmtlib/fmt/pull/2160, + https://github.com/fmtlib/fmt/issues/2170, + https://github.com/fmtlib/fmt/issues/2175, + https://github.com/fmtlib/fmt/issues/2176, + https://github.com/fmtlib/fmt/pull/2177, + https://github.com/fmtlib/fmt/issues/2178, + https://github.com/fmtlib/fmt/pull/2179, + https://github.com/fmtlib/fmt/issues/2180, + https://github.com/fmtlib/fmt/issues/2181, + https://github.com/fmtlib/fmt/pull/2183, + https://github.com/fmtlib/fmt/issues/2184, + https://github.com/fmtlib/fmt/issues/2185, + https://github.com/fmtlib/fmt/pull/2186, + https://github.com/fmtlib/fmt/pull/2187, + https://github.com/fmtlib/fmt/pull/2190, + https://github.com/fmtlib/fmt/pull/2192, + https://github.com/fmtlib/fmt/pull/2194, + https://github.com/fmtlib/fmt/pull/2205, + https://github.com/fmtlib/fmt/issues/2210, + https://github.com/fmtlib/fmt/pull/2211, + https://github.com/fmtlib/fmt/pull/2215, + https://github.com/fmtlib/fmt/pull/2216, + https://github.com/fmtlib/fmt/pull/2218, + https://github.com/fmtlib/fmt/pull/2220, + https://github.com/fmtlib/fmt/issues/2228, + https://github.com/fmtlib/fmt/pull/2229, + https://github.com/fmtlib/fmt/pull/2230, + https://github.com/fmtlib/fmt/issues/2233, + https://github.com/fmtlib/fmt/pull/2239, + https://github.com/fmtlib/fmt/issues/2248, + https://github.com/fmtlib/fmt/issues/2252, + https://github.com/fmtlib/fmt/pull/2253, + https://github.com/fmtlib/fmt/pull/2255, + https://github.com/fmtlib/fmt/issues/2261, + https://github.com/fmtlib/fmt/issues/2278, + https://github.com/fmtlib/fmt/issues/2284, + https://github.com/fmtlib/fmt/pull/2287, + https://github.com/fmtlib/fmt/pull/2289, + https://github.com/fmtlib/fmt/pull/2290, + https://github.com/fmtlib/fmt/pull/2293, + https://github.com/fmtlib/fmt/issues/2295, + https://github.com/fmtlib/fmt/pull/2296, + https://github.com/fmtlib/fmt/pull/2297, + https://github.com/fmtlib/fmt/issues/2311, + https://github.com/fmtlib/fmt/pull/2313, + https://github.com/fmtlib/fmt/pull/2315, + https://github.com/fmtlib/fmt/issues/2320, + https://github.com/fmtlib/fmt/pull/2321, + https://github.com/fmtlib/fmt/pull/2323, + https://github.com/fmtlib/fmt/issues/2328, + https://github.com/fmtlib/fmt/pull/2329, + https://github.com/fmtlib/fmt/pull/2333, + https://github.com/fmtlib/fmt/pull/2338, + https://github.com/fmtlib/fmt/pull/2341). + Thanks @darklukee, @fagg, @killerbot242, @jgopel, @yeswalrus, @Finkman, + @HazardyKnusperkeks, @dkavolis, @concatime, @chronoxor, @summivox, @yNeo, + @Apache-HB, @alexezeder, @toojays, @Brainy0207, @vadz, @imsherlock, @phprus, + @white238, @yafshar, @BillyDonahue, @jstaahl, @denchat, @DanielaE, + @ilyakurdyukov, @ilmai, @JessyDL, @sergiud, @mwinterb, @sven-herrmann, + @jmelas, @twoixter, @crbrz and @upsj. + +- Improved documentation + (https://github.com/fmtlib/fmt/issues/1986, + https://github.com/fmtlib/fmt/pull/2051, + https://github.com/fmtlib/fmt/issues/2057, + https://github.com/fmtlib/fmt/pull/2081, + https://github.com/fmtlib/fmt/issues/2084, + https://github.com/fmtlib/fmt/pull/2312). + Thanks @imba-tjd, @0x416c69 and @mordante. + +- Continuous integration and test improvements + (https://github.com/fmtlib/fmt/issues/1969, + https://github.com/fmtlib/fmt/pull/1991, + https://github.com/fmtlib/fmt/pull/2020, + https://github.com/fmtlib/fmt/pull/2110, + https://github.com/fmtlib/fmt/pull/2114, + https://github.com/fmtlib/fmt/issues/2196, + https://github.com/fmtlib/fmt/pull/2217, + https://github.com/fmtlib/fmt/pull/2247, + https://github.com/fmtlib/fmt/pull/2256, + https://github.com/fmtlib/fmt/pull/2336, + https://github.com/fmtlib/fmt/pull/2346). + Thanks @jgopel, @alexezeder and @DanielaE. + +The change log for versions 0.8.0 - 7.1.3 is available [here]( +doc/ChangeLog-old.md). diff --git a/Submodules/fmt/LICENSE b/Submodules/fmt/LICENSE new file mode 100644 index 0000000..1cd1ef9 --- /dev/null +++ b/Submodules/fmt/LICENSE @@ -0,0 +1,27 @@ +Copyright (c) 2012 - present, Victor Zverovich and {fmt} contributors + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +--- Optional exception to the license --- + +As an exception, if, as a result of your compiling your source code, portions +of this Software are embedded into a machine-executable object form of such +source code, you may redistribute such embedded portions in such object form +without including the above copyright and permission notices. diff --git a/Submodules/fmt/README.md b/Submodules/fmt/README.md new file mode 100644 index 0000000..5f9249d --- /dev/null +++ b/Submodules/fmt/README.md @@ -0,0 +1,484 @@ +{fmt} + +[![image](https://github.com/fmtlib/fmt/workflows/linux/badge.svg)](https://github.com/fmtlib/fmt/actions?query=workflow%3Alinux) +[![image](https://github.com/fmtlib/fmt/workflows/macos/badge.svg)](https://github.com/fmtlib/fmt/actions?query=workflow%3Amacos) +[![image](https://github.com/fmtlib/fmt/workflows/windows/badge.svg)](https://github.com/fmtlib/fmt/actions?query=workflow%3Awindows) +[![fmt is continuously fuzzed at oss-fuzz](https://oss-fuzz-build-logs.storage.googleapis.com/badges/fmt.svg)](https://bugs.chromium.org/p/oss-fuzz/issues/list?\%0Acolspec=ID%20Type%20Component%20Status%20Proj%20Reported%20Owner%20\%0ASummary&q=proj%3Dfmt&can=1) +[![Ask questions at StackOverflow with the tag fmt](https://img.shields.io/badge/stackoverflow-fmt-blue.svg)](https://stackoverflow.com/questions/tagged/fmt) +[![image](https://api.securityscorecards.dev/projects/github.com/fmtlib/fmt/badge)](https://securityscorecards.dev/viewer/?uri=github.com/fmtlib/fmt) + +**{fmt}** is an open-source formatting library providing a fast and safe +alternative to C stdio and C++ iostreams. + +If you like this project, please consider donating to one of the funds +that help victims of the war in Ukraine: . + +[Documentation](https://fmt.dev) + +[Cheat Sheets](https://hackingcpp.com/cpp/libs/fmt.html) + +Q&A: ask questions on [StackOverflow with the tag +fmt](https://stackoverflow.com/questions/tagged/fmt). + +Try {fmt} in [Compiler Explorer](https://godbolt.org/z/8Mx1EW73v). + +# Features + +- Simple [format API](https://fmt.dev/latest/api/) with positional + arguments for localization +- Implementation of [C++20 + std::format](https://en.cppreference.com/w/cpp/utility/format) and + [C++23 std::print](https://en.cppreference.com/w/cpp/io/print) +- [Format string syntax](https://fmt.dev/latest/syntax/) similar + to Python\'s + [format](https://docs.python.org/3/library/stdtypes.html#str.format) +- Fast IEEE 754 floating-point formatter with correct rounding, + shortness and round-trip guarantees using the + [Dragonbox](https://github.com/jk-jeon/dragonbox) algorithm +- Portable Unicode support +- Safe [printf + implementation](https://fmt.dev/latest/api/#printf-formatting) + including the POSIX extension for positional arguments +- Extensibility: [support for user-defined + types](https://fmt.dev/latest/api/#formatting-user-defined-types) +- High performance: faster than common standard library + implementations of `(s)printf`, iostreams, `to_string` and + `to_chars`, see [Speed tests](#speed-tests) and [Converting a + hundred million integers to strings per + second](http://www.zverovich.net/2020/06/13/fast-int-to-string-revisited.html) +- Small code size both in terms of source code with the minimum + configuration consisting of just three files, `core.h`, `format.h` + and `format-inl.h`, and compiled code; see [Compile time and code + bloat](#compile-time-and-code-bloat) +- Reliability: the library has an extensive set of + [tests](https://github.com/fmtlib/fmt/tree/master/test) and is + [continuously fuzzed](https://bugs.chromium.org/p/oss-fuzz/issues/list?colspec=ID%20Type%20Component%20Status%20Proj%20Reported%20Owner%20Summary&q=proj%3Dfmt&can=1) +- Safety: the library is fully type-safe, errors in format strings can + be reported at compile time, automatic memory management prevents + buffer overflow errors +- Ease of use: small self-contained code base, no external + dependencies, permissive MIT + [license](https://github.com/fmtlib/fmt/blob/master/LICENSE) +- [Portability](https://fmt.dev/latest/#portability) with + consistent output across platforms and support for older compilers +- Clean warning-free codebase even on high warning levels such as + `-Wall -Wextra -pedantic` +- Locale independence by default +- Optional header-only configuration enabled with the + `FMT_HEADER_ONLY` macro + +See the [documentation](https://fmt.dev) for more details. + +# Examples + +**Print to stdout** ([run](https://godbolt.org/z/Tevcjh)) + +``` c++ +#include + +int main() { + fmt::print("Hello, world!\n"); +} +``` + +**Format a string** ([run](https://godbolt.org/z/oK8h33)) + +``` c++ +std::string s = fmt::format("The answer is {}.", 42); +// s == "The answer is 42." +``` + +**Format a string using positional arguments** +([run](https://godbolt.org/z/Yn7Txe)) + +``` c++ +std::string s = fmt::format("I'd rather be {1} than {0}.", "right", "happy"); +// s == "I'd rather be happy than right." +``` + +**Print dates and times** ([run](https://godbolt.org/z/c31ExdY3W)) + +``` c++ +#include + +int main() { + auto now = std::chrono::system_clock::now(); + fmt::print("Date and time: {}\n", now); + fmt::print("Time: {:%H:%M}\n", now); +} +``` + +Output: + + Date and time: 2023-12-26 19:10:31.557195597 + Time: 19:10 + +**Print a container** ([run](https://godbolt.org/z/MxM1YqjE7)) + +``` c++ +#include +#include + +int main() { + std::vector v = {1, 2, 3}; + fmt::print("{}\n", v); +} +``` + +Output: + + [1, 2, 3] + +**Check a format string at compile time** + +``` c++ +std::string s = fmt::format("{:d}", "I am not a number"); +``` + +This gives a compile-time error in C++20 because `d` is an invalid +format specifier for a string. + +**Write a file from a single thread** + +``` c++ +#include + +int main() { + auto out = fmt::output_file("guide.txt"); + out.print("Don't {}", "Panic"); +} +``` + +This can be [5 to 9 times faster than +fprintf](http://www.zverovich.net/2020/08/04/optimal-file-buffer-size.html). + +**Print with colors and text styles** + +``` c++ +#include + +int main() { + fmt::print(fg(fmt::color::crimson) | fmt::emphasis::bold, + "Hello, {}!\n", "world"); + fmt::print(fg(fmt::color::floral_white) | bg(fmt::color::slate_gray) | + fmt::emphasis::underline, "Olá, {}!\n", "Mundo"); + fmt::print(fg(fmt::color::steel_blue) | fmt::emphasis::italic, + "你好{}！\n", "世界"); +} +``` + +Output on a modern terminal with Unicode support: + +![image](https://github.com/fmtlib/fmt/assets/%0A576385/2a93c904-d6fa-4aa6-b453-2618e1c327d7) + +# Benchmarks + +## Speed tests + +| Library | Method | Run Time, s | +|-------------------|---------------|-------------| +| libc | printf | 0.91 | +| libc++ | std::ostream | 2.49 | +| {fmt} 9.1 | fmt::print | 0.74 | +| Boost Format 1.80 | boost::format | 6.26 | +| Folly Format | folly::format | 1.87 | + +{fmt} is the fastest of the benchmarked methods, \~20% faster than +`printf`. + +The above results were generated by building `tinyformat_test.cpp` on +macOS 12.6.1 with `clang++ -O3 -DNDEBUG -DSPEED_TEST -DHAVE_FORMAT`, and +taking the best of three runs. In the test, the format string +`"%0.10f:%04d:%+g:%s:%p:%c:%%\n"` or equivalent is filled 2,000,000 +times with output sent to `/dev/null`; for further details refer to the +[source](https://github.com/fmtlib/format-benchmark/blob/master/src/tinyformat-test.cc). + +{fmt} is up to 20-30x faster than `std::ostringstream` and `sprintf` on +IEEE754 `float` and `double` formatting +([dtoa-benchmark](https://github.com/fmtlib/dtoa-benchmark)) and faster +than [double-conversion](https://github.com/google/double-conversion) +and [ryu](https://github.com/ulfjack/ryu): + +[![image](https://user-images.githubusercontent.com/576385/95684665-11719600-0ba8-11eb-8e5b-972ff4e49428.png)](https://fmt.dev/unknown_mac64_clang12.0.html) + +## Compile time and code bloat + +The script [bloat-test.py][test] from [format-benchmark][bench] tests compile +time and code bloat for nontrivial projects. It generates 100 translation units +and uses `printf()` or its alternative five times in each to simulate a +medium-sized project. The resulting executable size and compile time (Apple +clang version 15.0.0 (clang-1500.1.0.2.5), macOS Sonoma, best of three) is shown +in the following tables. + +[test]: https://github.com/fmtlib/format-benchmark/blob/master/bloat-test.py +[bench]: https://github.com/fmtlib/format-benchmark + +**Optimized build (-O3)** + +| Method | Compile Time, s | Executable size, KiB | Stripped size, KiB | +|---------------|-----------------|----------------------|--------------------| +| printf | 1.6 | 54 | 50 | +| IOStreams | 25.9 | 98 | 84 | +| fmt 83652df | 4.8 | 54 | 50 | +| tinyformat | 29.1 | 161 | 136 | +| Boost Format | 55.0 | 530 | 317 | + +{fmt} is fast to compile and is comparable to `printf` in terms of per-call +binary size (within a rounding error on this system). + +**Non-optimized build** + +| Method | Compile Time, s | Executable size, KiB | Stripped size, KiB | +|---------------|-----------------|----------------------|--------------------| +| printf | 1.4 | 54 | 50 | +| IOStreams | 23.4 | 92 | 68 | +| {fmt} 83652df | 4.4 | 89 | 85 | +| tinyformat | 24.5 | 204 | 161 | +| Boost Format | 36.4 | 831 | 462 | + +`libc`, `lib(std)c++`, and `libfmt` are all linked as shared libraries +to compare formatting function overhead only. Boost Format is a +header-only library so it doesn\'t provide any linkage options. + +## Running the tests + +Please refer to [Building the +library](https://fmt.dev/latest/get-started/#building-from-source) for +instructions on how to build the library and run the unit tests. + +Benchmarks reside in a separate repository, +[format-benchmarks](https://github.com/fmtlib/format-benchmark), so to +run the benchmarks you first need to clone this repository and generate +Makefiles with CMake: + + $ git clone --recursive https://github.com/fmtlib/format-benchmark.git + $ cd format-benchmark + $ cmake . + +Then you can run the speed test: + + $ make speed-test + +or the bloat test: + + $ make bloat-test + +# Migrating code + +[clang-tidy](https://clang.llvm.org/extra/clang-tidy/) v18 provides the +[modernize-use-std-print](https://clang.llvm.org/extra/clang-tidy/checks/modernize/use-std-print.html) +check that is capable of converting occurrences of `printf` and +`fprintf` to `fmt::print` if configured to do so. (By default it +converts to `std::print`.) + +# Notable projects using this library + +- [0 A.D.](https://play0ad.com/): a free, open-source, cross-platform + real-time strategy game +- [AMPL/MP](https://github.com/ampl/mp): an open-source library for + mathematical programming +- [Apple's FoundationDB](https://github.com/apple/foundationdb): an open-source, + distributed, transactional key-value store +- [Aseprite](https://github.com/aseprite/aseprite): animated sprite + editor & pixel art tool +- [AvioBook](https://www.aviobook.aero/en): a comprehensive aircraft + operations suite +- [Blizzard Battle.net](https://battle.net/): an online gaming + platform +- [Celestia](https://celestia.space/): real-time 3D visualization of + space +- [Ceph](https://ceph.com/): a scalable distributed storage system +- [ccache](https://ccache.dev/): a compiler cache +- [ClickHouse](https://github.com/ClickHouse/ClickHouse): an + analytical database management system +- [Contour](https://github.com/contour-terminal/contour/): a modern + terminal emulator +- [CUAUV](https://cuauv.org/): Cornell University\'s autonomous + underwater vehicle +- [Drake](https://drake.mit.edu/): a planning, control, and analysis + toolbox for nonlinear dynamical systems (MIT) +- [Envoy](https://github.com/envoyproxy/envoy): C++ L7 proxy and + communication bus (Lyft) +- [FiveM](https://fivem.net/): a modification framework for GTA V +- [fmtlog](https://github.com/MengRao/fmtlog): a performant + fmtlib-style logging library with latency in nanoseconds +- [Folly](https://github.com/facebook/folly): Facebook open-source + library +- [GemRB](https://gemrb.org/): a portable open-source implementation + of Bioware's Infinity Engine +- [Grand Mountain + Adventure](https://store.steampowered.com/app/1247360/Grand_Mountain_Adventure/): + a beautiful open-world ski & snowboarding game +- [HarpyWar/pvpgn](https://github.com/pvpgn/pvpgn-server): Player vs + Player Gaming Network with tweaks +- [KBEngine](https://github.com/kbengine/kbengine): an open-source + MMOG server engine +- [Keypirinha](https://keypirinha.com/): a semantic launcher for + Windows +- [Kodi](https://kodi.tv/) (formerly xbmc): home theater software +- [Knuth](https://kth.cash/): high-performance Bitcoin full-node +- [libunicode](https://github.com/contour-terminal/libunicode/): a + modern C++17 Unicode library +- [MariaDB](https://mariadb.org/): relational database management + system +- [Microsoft Verona](https://github.com/microsoft/verona): research + programming language for concurrent ownership +- [MongoDB](https://mongodb.com/): distributed document database +- [MongoDB Smasher](https://github.com/duckie/mongo_smasher): a small + tool to generate randomized datasets +- [OpenSpace](https://openspaceproject.com/): an open-source + astrovisualization framework +- [PenUltima Online (POL)](https://www.polserver.com/): an MMO server, + compatible with most Ultima Online clients +- [PyTorch](https://github.com/pytorch/pytorch): an open-source + machine learning library +- [quasardb](https://www.quasardb.net/): a distributed, + high-performance, associative database +- [Quill](https://github.com/odygrd/quill): asynchronous low-latency + logging library +- [QKW](https://github.com/ravijanjam/qkw): generalizing aliasing to + simplify navigation, and execute complex multi-line terminal + command sequences +- [redis-cerberus](https://github.com/HunanTV/redis-cerberus): a Redis + cluster proxy +- [redpanda](https://vectorized.io/redpanda): a 10x faster Kafka® + replacement for mission-critical systems written in C++ +- [rpclib](http://rpclib.net/): a modern C++ msgpack-RPC server and + client library +- [Salesforce Analytics + Cloud](https://www.salesforce.com/analytics-cloud/overview/): + business intelligence software +- [Scylla](https://www.scylladb.com/): a Cassandra-compatible NoSQL + data store that can handle 1 million transactions per second on a + single server +- [Seastar](http://www.seastar-project.org/): an advanced, open-source + C++ framework for high-performance server applications on modern + hardware +- [spdlog](https://github.com/gabime/spdlog): super fast C++ logging + library +- [Stellar](https://www.stellar.org/): financial platform +- [Touch Surgery](https://www.touchsurgery.com/): surgery simulator +- [TrinityCore](https://github.com/TrinityCore/TrinityCore): + open-source MMORPG framework +- [🐙 userver framework](https://userver.tech/): open-source + asynchronous framework with a rich set of abstractions and database + drivers +- [Windows Terminal](https://github.com/microsoft/terminal): the new + Windows terminal + +[More\...](https://github.com/search?q=fmtlib&type=Code) + +If you are aware of other projects using this library, please let me +know by [email](mailto:victor.zverovich@gmail.com) or by submitting an +[issue](https://github.com/fmtlib/fmt/issues). + +# Motivation + +So why yet another formatting library? + +There are plenty of methods for doing this task, from standard ones like +the printf family of function and iostreams to Boost Format and +FastFormat libraries. The reason for creating a new library is that +every existing solution that I found either had serious issues or +didn\'t provide all the features I needed. + +## printf + +The good thing about `printf` is that it is pretty fast and readily +available being a part of the C standard library. The main drawback is +that it doesn\'t support user-defined types. `printf` also has safety +issues although they are somewhat mitigated with [\_\_attribute\_\_ +((format (printf, +\...))](https://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html) in +GCC. There is a POSIX extension that adds positional arguments required +for +[i18n](https://en.wikipedia.org/wiki/Internationalization_and_localization) +to `printf` but it is not a part of C99 and may not be available on some +platforms. + +## iostreams + +The main issue with iostreams is best illustrated with an example: + +``` c++ +std::cout << std::setprecision(2) << std::fixed << 1.23456 << "\n"; +``` + +which is a lot of typing compared to printf: + +``` c++ +printf("%.2f\n", 1.23456); +``` + +Matthew Wilson, the author of FastFormat, called this \"chevron hell\". +iostreams don\'t support positional arguments by design. + +The good part is that iostreams support user-defined types and are safe +although error handling is awkward. + +## Boost Format + +This is a very powerful library that supports both `printf`-like format +strings and positional arguments. Its main drawback is performance. +According to various benchmarks, it is much slower than other methods +considered here. Boost Format also has excessive build times and severe +code bloat issues (see [Benchmarks](#benchmarks)). + +## FastFormat + +This is an interesting library that is fast, safe and has positional +arguments. However, it has significant limitations, citing its author: + +> Three features that have no hope of being accommodated within the +> current design are: +> +> - Leading zeros (or any other non-space padding) +> - Octal/hexadecimal encoding +> - Runtime width/alignment specification + +It is also quite big and has a heavy dependency, on STLSoft, which might be +too restrictive for use in some projects. + +## Boost Spirit.Karma + +This is not a formatting library but I decided to include it here for +completeness. As iostreams, it suffers from the problem of mixing +verbatim text with arguments. The library is pretty fast, but slower on +integer formatting than `fmt::format_to` with format string compilation +on Karma\'s own benchmark, see [Converting a hundred million integers to +strings per +second](http://www.zverovich.net/2020/06/13/fast-int-to-string-revisited.html). + +# License + +{fmt} is distributed under the MIT +[license](https://github.com/fmtlib/fmt/blob/master/LICENSE). + +# Documentation License + +The [Format String Syntax](https://fmt.dev/latest/syntax/) section +in the documentation is based on the one from Python [string module +documentation](https://docs.python.org/3/library/string.html#module-string). +For this reason, the documentation is distributed under the Python +Software Foundation license available in +[doc/python-license.txt](https://raw.github.com/fmtlib/fmt/master/doc/python-license.txt). +It only applies if you distribute the documentation of {fmt}. + +# Maintainers + +The {fmt} library is maintained by Victor Zverovich +([vitaut](https://github.com/vitaut)) with contributions from many other +people. See +[Contributors](https://github.com/fmtlib/fmt/graphs/contributors) and +[Releases](https://github.com/fmtlib/fmt/releases) for some of the +names. Let us know if your contribution is not listed or mentioned +incorrectly and we\'ll make it right. + +# Security Policy + +To report a security issue, please disclose it at [security +advisory](https://github.com/fmtlib/fmt/security/advisories/new). + +This project is maintained by a team of volunteers on a +reasonable-effort basis. As such, please give us at least *90* days to +work on a fix before public exposure. diff --git a/Submodules/fmt/doc/ChangeLog-old.md b/Submodules/fmt/doc/ChangeLog-old.md new file mode 100644 index 0000000..3f31d1e --- /dev/null +++ b/Submodules/fmt/doc/ChangeLog-old.md @@ -0,0 +1,3290 @@ +# 7.1.3 - 2020-11-24 + +- Fixed handling of buffer boundaries in `format_to_n` + (https://github.com/fmtlib/fmt/issues/1996, + https://github.com/fmtlib/fmt/issues/2029). +- Fixed linkage errors when linking with a shared library + (https://github.com/fmtlib/fmt/issues/2011). +- Reintroduced ostream support to range formatters + (https://github.com/fmtlib/fmt/issues/2014). +- Worked around an issue with mixing std versions in gcc + (https://github.com/fmtlib/fmt/issues/2017). + +# 7.1.2 - 2020-11-04 + +- Fixed floating point formatting with large precision + (https://github.com/fmtlib/fmt/issues/1976). + +# 7.1.1 - 2020-11-01 + +- Fixed ABI compatibility with 7.0.x + (https://github.com/fmtlib/fmt/issues/1961). +- Added the `FMT_ARM_ABI_COMPATIBILITY` macro to work around ABI + incompatibility between GCC and Clang on ARM + (https://github.com/fmtlib/fmt/issues/1919). +- Worked around a SFINAE bug in GCC 8 + (https://github.com/fmtlib/fmt/issues/1957). +- Fixed linkage errors when building with GCC\'s LTO + (https://github.com/fmtlib/fmt/issues/1955). +- Fixed a compilation error when building without `__builtin_clz` or + equivalent (https://github.com/fmtlib/fmt/pull/1968). + Thanks @tohammer. +- Fixed a sign conversion warning + (https://github.com/fmtlib/fmt/pull/1964). Thanks @OptoCloud. + +# 7.1.0 - 2020-10-25 + +- Switched from + [Grisu3](https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf) + to [Dragonbox](https://github.com/jk-jeon/dragonbox) for the default + floating-point formatting which gives the shortest decimal + representation with round-trip guarantee and correct rounding + (https://github.com/fmtlib/fmt/pull/1882, + https://github.com/fmtlib/fmt/pull/1887, + https://github.com/fmtlib/fmt/pull/1894). This makes {fmt} + up to 20-30x faster than common implementations of + `std::ostringstream` and `sprintf` on + [dtoa-benchmark](https://github.com/fmtlib/dtoa-benchmark) and + faster than double-conversion and Ryū: + + ![](https://user-images.githubusercontent.com/576385/95684665-11719600-0ba8-11eb-8e5b-972ff4e49428.png) + + It is possible to get even better performance at the cost of larger + binary size by compiling with the `FMT_USE_FULL_CACHE_DRAGONBOX` + macro set to 1. + + Thanks @jk-jeon. + +- Added an experimental unsynchronized file output API which, together + with [format string + compilation](https://fmt.dev/latest/api.html#compile-api), can give + [5-9 times speed up compared to + fprintf](https://www.zverovich.net/2020/08/04/optimal-file-buffer-size.html) + on common platforms ([godbolt](https://godbolt.org/z/nsTcG8)): + + ```c++ + #include + + int main() { + auto f = fmt::output_file("guide"); + f.print("The answer is {}.", 42); + } + ``` + +- Added a formatter for `std::chrono::time_point` + (https://github.com/fmtlib/fmt/issues/1819, + https://github.com/fmtlib/fmt/pull/1837). For example + ([godbolt](https://godbolt.org/z/c4M6fh)): + + ```c++ + #include + + int main() { + auto now = std::chrono::system_clock::now(); + fmt::print("The time is {:%H:%M:%S}.\n", now); + } + ``` + + Thanks @adamburgess. + +- Added support for ranges with non-const `begin`/`end` to `fmt::join` + (https://github.com/fmtlib/fmt/issues/1784, + https://github.com/fmtlib/fmt/pull/1786). For example + ([godbolt](https://godbolt.org/z/jP63Tv)): + + ```c++ + #include + #include + + int main() { + using std::literals::string_literals::operator""s; + auto strs = std::array{"a"s, "bb"s, "ccc"s}; + auto range = strs | ranges::views::filter( + [] (const std::string &x) { return x.size() != 2; } + ); + fmt::print("{}\n", fmt::join(range, "")); + } + ``` + + prints \"accc\". + + Thanks @tonyelewis. + +- Added a `memory_buffer::append` overload that takes a range + (https://github.com/fmtlib/fmt/pull/1806). Thanks @BRevzin. + +- Improved handling of single code units in `FMT_COMPILE`. For + example: + + ```c++ + #include + + char* f(char* buf) { + return fmt::format_to(buf, FMT_COMPILE("x{}"), 42); + } + ``` + + compiles to just ([godbolt](https://godbolt.org/z/5vncz3)): + + ```asm + _Z1fPc: + movb $120, (%rdi) + xorl %edx, %edx + cmpl $42, _ZN3fmt2v76detail10basic_dataIvE23zero_or_powers_of_10_32E+8(%rip) + movl $3, %eax + seta %dl + subl %edx, %eax + movzwl _ZN3fmt2v76detail10basic_dataIvE6digitsE+84(%rip), %edx + cltq + addq %rdi, %rax + movw %dx, -2(%rax) + ret + ``` + + Here a single `mov` instruction writes `'x'` (`$120`) to the output + buffer. + +- Added dynamic width support to format string compilation + (https://github.com/fmtlib/fmt/issues/1809). + +- Improved error reporting for unformattable types: now you\'ll get + the type name directly in the error message instead of the note: + + ```c++ + #include + + struct how_about_no {}; + + int main() { + fmt::print("{}", how_about_no()); + } + ``` + + Error ([godbolt](https://godbolt.org/z/GoxM4e)): + + `fmt/core.h:1438:3: error: static_assert failed due to requirement 'fmt::v7::formattable()' "Cannot format an argument. To make type T formattable provide a formatter specialization: https://fmt.dev/latest/api.html#udt" ...` + +- Added the + [make_args_checked](https://fmt.dev/7.1.0/api.html#argument-lists) + function template that allows you to write formatting functions with + compile-time format string checks and avoid binary code bloat + ([godbolt](https://godbolt.org/z/PEf9qr)): + + ```c++ + void vlog(const char* file, int line, fmt::string_view format, + fmt::format_args args) { + fmt::print("{}: {}: ", file, line); + fmt::vprint(format, args); + } + + template + void log(const char* file, int line, const S& format, Args&&... args) { + vlog(file, line, format, + fmt::make_args_checked(format, args...)); + } + + #define MY_LOG(format, ...) \ + log(__FILE__, __LINE__, FMT_STRING(format), __VA_ARGS__) + + MY_LOG("invalid squishiness: {}", 42); + ``` + +- Replaced `snprintf` fallback with a faster internal IEEE 754 `float` + and `double` formatter for arbitrary precision. For example + ([godbolt](https://godbolt.org/z/dPhWvj)): + + ```c++ + #include + + int main() { + fmt::print("{:.500}\n", 4.9406564584124654E-324); + } + ``` + + prints + + `4.9406564584124654417656879286822137236505980261432476442558568250067550727020875186529983636163599237979656469544571773092665671035593979639877479601078187812630071319031140452784581716784898210368871863605699873072305000638740915356498438731247339727316961514003171538539807412623856559117102665855668676818703956031062493194527159149245532930545654440112748012970999954193198940908041656332452475714786901472678015935523861155013480352649347201937902681071074917033322268447533357208324319360923829e-324`. + +- Made `format_to_n` and `formatted_size` part of the [core + API](https://fmt.dev/latest/api.html#core-api) + ([godbolt](https://godbolt.org/z/sPjY1K)): + + ```c++ + #include + + int main() { + char buffer[10]; + auto result = fmt::format_to_n(buffer, sizeof(buffer), "{}", 42); + } + ``` + +- Added `fmt::format_to_n` overload with format string compilation + (https://github.com/fmtlib/fmt/issues/1764, + https://github.com/fmtlib/fmt/pull/1767, + https://github.com/fmtlib/fmt/pull/1869). For example + ([godbolt](https://godbolt.org/z/93h86q)): + + ```c++ + #include + + int main() { + char buffer[8]; + fmt::format_to_n(buffer, sizeof(buffer), FMT_COMPILE("{}"), 42); + } + ``` + + Thanks @Kurkin and @alexezeder. + +- Added `fmt::format_to` overload that take `text_style` + (https://github.com/fmtlib/fmt/issues/1593, + https://github.com/fmtlib/fmt/issues/1842, + https://github.com/fmtlib/fmt/pull/1843). For example + ([godbolt](https://godbolt.org/z/91153r)): + + ```c++ + #include + + int main() { + std::string out; + fmt::format_to(std::back_inserter(out), + fmt::emphasis::bold | fg(fmt::color::red), + "The answer is {}.", 42); + } + ``` + + Thanks @Naios. + +- Made the `'#'` specifier emit trailing zeros in addition to the + decimal point (https://github.com/fmtlib/fmt/issues/1797). + For example ([godbolt](https://godbolt.org/z/bhdcW9)): + + ```c++ + #include + + int main() { + fmt::print("{:#.2g}", 0.5); + } + ``` + + prints `0.50`. + +- Changed the default floating point format to not include `.0` for + consistency with `std::format` and `std::to_chars` + (https://github.com/fmtlib/fmt/issues/1893, + https://github.com/fmtlib/fmt/issues/1943). It is possible + to get the decimal point and trailing zero with the `#` specifier. + +- Fixed an issue with floating-point formatting that could result in + addition of a non-significant trailing zero in rare cases e.g. + `1.00e-34` instead of `1.0e-34` + (https://github.com/fmtlib/fmt/issues/1873, + https://github.com/fmtlib/fmt/issues/1917). + +- Made `fmt::to_string` fallback on `ostream` insertion operator if + the `formatter` specialization is not provided + (https://github.com/fmtlib/fmt/issues/1815, + https://github.com/fmtlib/fmt/pull/1829). Thanks @alexezeder. + +- Added support for the append mode to the experimental file API and + improved `fcntl.h` detection. + (https://github.com/fmtlib/fmt/pull/1847, + https://github.com/fmtlib/fmt/pull/1848). Thanks @t-wiser. + +- Fixed handling of types that have both an implicit conversion + operator and an overloaded `ostream` insertion operator + (https://github.com/fmtlib/fmt/issues/1766). + +- Fixed a slicing issue in an internal iterator type + (https://github.com/fmtlib/fmt/pull/1822). Thanks @BRevzin. + +- Fixed an issue in locale-specific integer formatting + (https://github.com/fmtlib/fmt/issues/1927). + +- Fixed handling of exotic code unit types + (https://github.com/fmtlib/fmt/issues/1870, + https://github.com/fmtlib/fmt/issues/1932). + +- Improved `FMT_ALWAYS_INLINE` + (https://github.com/fmtlib/fmt/pull/1878). Thanks @jk-jeon. + +- Removed dependency on `windows.h` + (https://github.com/fmtlib/fmt/pull/1900). Thanks @bernd5. + +- Optimized counting of decimal digits on MSVC + (https://github.com/fmtlib/fmt/pull/1890). Thanks @mwinterb. + +- Improved documentation + (https://github.com/fmtlib/fmt/issues/1772, + https://github.com/fmtlib/fmt/pull/1775, + https://github.com/fmtlib/fmt/pull/1792, + https://github.com/fmtlib/fmt/pull/1838, + https://github.com/fmtlib/fmt/pull/1888, + https://github.com/fmtlib/fmt/pull/1918, + https://github.com/fmtlib/fmt/pull/1939). + Thanks @leolchat, @pepsiman, @Klaim, @ravijanjam, @francesco-st and @udnaan. + +- Added the `FMT_REDUCE_INT_INSTANTIATIONS` CMake option that reduces + the binary code size at the cost of some integer formatting + performance. This can be useful for extremely memory-constrained + embedded systems + (https://github.com/fmtlib/fmt/issues/1778, + https://github.com/fmtlib/fmt/pull/1781). Thanks @kammce. + +- Added the `FMT_USE_INLINE_NAMESPACES` macro to control usage of + inline namespaces + (https://github.com/fmtlib/fmt/pull/1945). Thanks @darklukee. + +- Improved build configuration + (https://github.com/fmtlib/fmt/pull/1760, + https://github.com/fmtlib/fmt/pull/1770, + https://github.com/fmtlib/fmt/issues/1779, + https://github.com/fmtlib/fmt/pull/1783, + https://github.com/fmtlib/fmt/pull/1823). + Thanks @dvetutnev, @xvitaly, @tambry, @medithe and @martinwuehrer. + +- Fixed various warnings and compilation issues + (https://github.com/fmtlib/fmt/pull/1790, + https://github.com/fmtlib/fmt/pull/1802, + https://github.com/fmtlib/fmt/pull/1808, + https://github.com/fmtlib/fmt/issues/1810, + https://github.com/fmtlib/fmt/issues/1811, + https://github.com/fmtlib/fmt/pull/1812, + https://github.com/fmtlib/fmt/pull/1814, + https://github.com/fmtlib/fmt/pull/1816, + https://github.com/fmtlib/fmt/pull/1817, + https://github.com/fmtlib/fmt/pull/1818, + https://github.com/fmtlib/fmt/issues/1825, + https://github.com/fmtlib/fmt/pull/1836, + https://github.com/fmtlib/fmt/pull/1855, + https://github.com/fmtlib/fmt/pull/1856, + https://github.com/fmtlib/fmt/pull/1860, + https://github.com/fmtlib/fmt/pull/1877, + https://github.com/fmtlib/fmt/pull/1879, + https://github.com/fmtlib/fmt/pull/1880, + https://github.com/fmtlib/fmt/issues/1896, + https://github.com/fmtlib/fmt/pull/1897, + https://github.com/fmtlib/fmt/pull/1898, + https://github.com/fmtlib/fmt/issues/1904, + https://github.com/fmtlib/fmt/pull/1908, + https://github.com/fmtlib/fmt/issues/1911, + https://github.com/fmtlib/fmt/issues/1912, + https://github.com/fmtlib/fmt/issues/1928, + https://github.com/fmtlib/fmt/pull/1929, + https://github.com/fmtlib/fmt/issues/1935, + https://github.com/fmtlib/fmt/pull/1937, + https://github.com/fmtlib/fmt/pull/1942, + https://github.com/fmtlib/fmt/issues/1949). + Thanks @TheQwertiest, @medithe, @martinwuehrer, @n16h7hunt3r, @Othereum, + @gsjaardema, @AlexanderLanin, @gcerretani, @chronoxor, @noizefloor, + @akohlmey, @jk-jeon, @rimathia, @rglarix, @moiwi, @heckad, @MarcDirven. + @BartSiwek and @darklukee. + +# 7.0.3 - 2020-08-06 + +- Worked around broken `numeric_limits` for 128-bit integers + (https://github.com/fmtlib/fmt/issues/1787). +- Added error reporting on missing named arguments + (https://github.com/fmtlib/fmt/issues/1796). +- Stopped using 128-bit integers with clang-cl + (https://github.com/fmtlib/fmt/pull/1800). Thanks @Kingcom. +- Fixed issues in locale-specific integer formatting + (https://github.com/fmtlib/fmt/issues/1782, + https://github.com/fmtlib/fmt/issues/1801). + +# 7.0.2 - 2020-07-29 + +- Worked around broken `numeric_limits` for 128-bit integers + (https://github.com/fmtlib/fmt/issues/1725). +- Fixed compatibility with CMake 3.4 + (https://github.com/fmtlib/fmt/issues/1779). +- Fixed handling of digit separators in locale-specific formatting + (https://github.com/fmtlib/fmt/issues/1782). + +# 7.0.1 - 2020-07-07 + +- Updated the inline version namespace name. +- Worked around a gcc bug in mangling of alias templates + (https://github.com/fmtlib/fmt/issues/1753). +- Fixed a linkage error on Windows + (https://github.com/fmtlib/fmt/issues/1757). Thanks @Kurkin. +- Fixed minor issues with the documentation. + +# 7.0.0 - 2020-07-05 + +- Reduced the library size. For example, on macOS a stripped test + binary statically linked with {fmt} [shrank from \~368k to less than + 100k](http://www.zverovich.net/2020/05/21/reducing-library-size.html). + +- Added a simpler and more efficient [format string compilation + API](https://fmt.dev/7.0.0/api.html#compile-api): + + ```c++ + #include + + // Converts 42 into std::string using the most efficient method and no + // runtime format string processing. + std::string s = fmt::format(FMT_COMPILE("{}"), 42); + ``` + + The old `fmt::compile` API is now deprecated. + +- Optimized integer formatting: `format_to` with format string + compilation and a stack-allocated buffer is now [faster than + to_chars on both libc++ and + libstdc++](http://www.zverovich.net/2020/06/13/fast-int-to-string-revisited.html). + +- Optimized handling of small format strings. For example, + + ```c++ + fmt::format("Result: {}: ({},{},{},{})", str1, str2, str3, str4, str5) + ``` + + is now \~40% faster + (https://github.com/fmtlib/fmt/issues/1685). + +- Applied extern templates to improve compile times when using the + core API and `fmt/format.h` + (https://github.com/fmtlib/fmt/issues/1452). For example, + on macOS with clang the compile time of a test translation unit + dropped from 2.3s to 0.3s with `-O2` and from 0.6s to 0.3s with the + default settings (`-O0`). + + Before (`-O2`): + + % time c++ -c test.cc -I include -std=c++17 -O2 + c++ -c test.cc -I include -std=c++17 -O2 2.22s user 0.08s system 99% cpu 2.311 total + + After (`-O2`): + + % time c++ -c test.cc -I include -std=c++17 -O2 + c++ -c test.cc -I include -std=c++17 -O2 0.26s user 0.04s system 98% cpu 0.303 total + + Before (default): + + % time c++ -c test.cc -I include -std=c++17 + c++ -c test.cc -I include -std=c++17 0.53s user 0.06s system 98% cpu 0.601 total + + After (default): + + % time c++ -c test.cc -I include -std=c++17 + c++ -c test.cc -I include -std=c++17 0.24s user 0.06s system 98% cpu 0.301 total + + It is still recommended to use `fmt/core.h` instead of + `fmt/format.h` but the compile time difference is now smaller. + Thanks @alex3d for the suggestion. + +- Named arguments are now stored on stack (no dynamic memory + allocations) and the compiled code is more compact and efficient. + For example + + ```c++ + #include + + int main() { + fmt::print("The answer is {answer}\n", fmt::arg("answer", 42)); + } + ``` + + compiles to just ([godbolt](https://godbolt.org/z/NcfEp_)) + + ```asm + .LC0: + .string "answer" + .LC1: + .string "The answer is {answer}\n" + main: + sub rsp, 56 + mov edi, OFFSET FLAT:.LC1 + mov esi, 23 + movabs rdx, 4611686018427387905 + lea rax, [rsp+32] + lea rcx, [rsp+16] + mov QWORD PTR [rsp+8], 1 + mov QWORD PTR [rsp], rax + mov DWORD PTR [rsp+16], 42 + mov QWORD PTR [rsp+32], OFFSET FLAT:.LC0 + mov DWORD PTR [rsp+40], 0 + call fmt::v6::vprint(fmt::v6::basic_string_view, + fmt::v6::format_args) + xor eax, eax + add rsp, 56 + ret + + .L.str.1: + .asciz "answer" + ``` + +- Implemented compile-time checks for dynamic width and precision + (https://github.com/fmtlib/fmt/issues/1614): + + ```c++ + #include + + int main() { + fmt::print(FMT_STRING("{0:{1}}"), 42); + } + ``` + + now gives a compilation error because argument 1 doesn\'t exist: + + In file included from test.cc:1: + include/fmt/format.h:2726:27: error: constexpr variable 'invalid_format' must be + initialized by a constant expression + FMT_CONSTEXPR_DECL bool invalid_format = + ^ + ... + include/fmt/core.h:569:26: note: in call to + '&checker(s, {}).context_->on_error(&"argument not found"[0])' + if (id >= num_args_) on_error("argument not found"); + ^ + +- Added sentinel support to `fmt::join` + (https://github.com/fmtlib/fmt/pull/1689) + + ```c++ + struct zstring_sentinel {}; + bool operator==(const char* p, zstring_sentinel) { return *p == '\0'; } + bool operator!=(const char* p, zstring_sentinel) { return *p != '\0'; } + + struct zstring { + const char* p; + const char* begin() const { return p; } + zstring_sentinel end() const { return {}; } + }; + + auto s = fmt::format("{}", fmt::join(zstring{"hello"}, "_")); + // s == "h_e_l_l_o" + ``` + + Thanks @BRevzin. + +- Added support for named arguments, `clear` and `reserve` to + `dynamic_format_arg_store` + (https://github.com/fmtlib/fmt/issues/1655, + https://github.com/fmtlib/fmt/pull/1663, + https://github.com/fmtlib/fmt/pull/1674, + https://github.com/fmtlib/fmt/pull/1677). Thanks @vsolontsov-ll. + +- Added support for the `'c'` format specifier to integral types for + compatibility with `std::format` + (https://github.com/fmtlib/fmt/issues/1652). + +- Replaced the `'n'` format specifier with `'L'` for compatibility + with `std::format` + (https://github.com/fmtlib/fmt/issues/1624). The `'n'` + specifier can be enabled via the `FMT_DEPRECATED_N_SPECIFIER` macro. + +- The `'='` format specifier is now disabled by default for + compatibility with `std::format`. It can be enabled via the + `FMT_DEPRECATED_NUMERIC_ALIGN` macro. + +- Removed the following deprecated APIs: + + - `FMT_STRING_ALIAS` and `fmt` macros - replaced by `FMT_STRING` + - `fmt::basic_string_view::char_type` - replaced by + `fmt::basic_string_view::value_type` + - `convert_to_int` + - `format_arg_store::types` + - `*parse_context` - replaced by `*format_parse_context` + - `FMT_DEPRECATED_INCLUDE_OS` + - `FMT_DEPRECATED_PERCENT` - incompatible with `std::format` + - `*writer` - replaced by compiled format API + +- Renamed the `internal` namespace to `detail` + (https://github.com/fmtlib/fmt/issues/1538). The former is + still provided as an alias if the `FMT_USE_INTERNAL` macro is + defined. + +- Improved compatibility between `fmt::printf` with the standard specs + (https://github.com/fmtlib/fmt/issues/1595, + https://github.com/fmtlib/fmt/pull/1682, + https://github.com/fmtlib/fmt/pull/1683, + https://github.com/fmtlib/fmt/pull/1687, + https://github.com/fmtlib/fmt/pull/1699). Thanks @rimathia. + +- Fixed handling of `operator<<` overloads that use `copyfmt` + (https://github.com/fmtlib/fmt/issues/1666). + +- Added the `FMT_OS` CMake option to control inclusion of OS-specific + APIs in the fmt target. This can be useful for embedded platforms + (https://github.com/fmtlib/fmt/issues/1654, + https://github.com/fmtlib/fmt/pull/1656). Thanks @kwesolowski. + +- Replaced `FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION` with the + `FMT_FUZZ` macro to prevent interfering with fuzzing of projects + using {fmt} (https://github.com/fmtlib/fmt/pull/1650). + Thanks @asraa. + +- Fixed compatibility with emscripten + (https://github.com/fmtlib/fmt/issues/1636, + https://github.com/fmtlib/fmt/pull/1637). Thanks @ArthurSonzogni. + +- Improved documentation + (https://github.com/fmtlib/fmt/issues/704, + https://github.com/fmtlib/fmt/pull/1643, + https://github.com/fmtlib/fmt/pull/1660, + https://github.com/fmtlib/fmt/pull/1681, + https://github.com/fmtlib/fmt/pull/1691, + https://github.com/fmtlib/fmt/pull/1706, + https://github.com/fmtlib/fmt/pull/1714, + https://github.com/fmtlib/fmt/pull/1721, + https://github.com/fmtlib/fmt/pull/1739, + https://github.com/fmtlib/fmt/pull/1740, + https://github.com/fmtlib/fmt/pull/1741, + https://github.com/fmtlib/fmt/pull/1751). + Thanks @senior7515, @lsr0, @puetzk, @fpelliccioni, Alexey Kuzmenko, @jelly, + @claremacrae, @jiapengwen, @gsjaardema and @alexey-milovidov. + +- Implemented various build configuration fixes and improvements + (https://github.com/fmtlib/fmt/pull/1603, + https://github.com/fmtlib/fmt/pull/1657, + https://github.com/fmtlib/fmt/pull/1702, + https://github.com/fmtlib/fmt/pull/1728). + Thanks @scramsby, @jtojnar, @orivej and @flagarde. + +- Fixed various warnings and compilation issues + (https://github.com/fmtlib/fmt/pull/1616, + https://github.com/fmtlib/fmt/issues/1620, + https://github.com/fmtlib/fmt/issues/1622, + https://github.com/fmtlib/fmt/issues/1625, + https://github.com/fmtlib/fmt/pull/1627, + https://github.com/fmtlib/fmt/issues/1628, + https://github.com/fmtlib/fmt/pull/1629, + https://github.com/fmtlib/fmt/issues/1631, + https://github.com/fmtlib/fmt/pull/1633, + https://github.com/fmtlib/fmt/pull/1649, + https://github.com/fmtlib/fmt/issues/1658, + https://github.com/fmtlib/fmt/pull/1661, + https://github.com/fmtlib/fmt/pull/1667, + https://github.com/fmtlib/fmt/issues/1668, + https://github.com/fmtlib/fmt/pull/1669, + https://github.com/fmtlib/fmt/issues/1692, + https://github.com/fmtlib/fmt/pull/1696, + https://github.com/fmtlib/fmt/pull/1697, + https://github.com/fmtlib/fmt/issues/1707, + https://github.com/fmtlib/fmt/pull/1712, + https://github.com/fmtlib/fmt/pull/1716, + https://github.com/fmtlib/fmt/pull/1722, + https://github.com/fmtlib/fmt/issues/1724, + https://github.com/fmtlib/fmt/pull/1729, + https://github.com/fmtlib/fmt/pull/1738, + https://github.com/fmtlib/fmt/issues/1742, + https://github.com/fmtlib/fmt/issues/1743, + https://github.com/fmtlib/fmt/pull/1744, + https://github.com/fmtlib/fmt/issues/1747, + https://github.com/fmtlib/fmt/pull/1750). + Thanks @gsjaardema, @gabime, @johnor, @Kurkin, @invexed, @peterbell10, + @daixtrose, @petrutlucian94, @Neargye, @ambitslix, @gabime, @erthink, + @tohammer and @0x8000-0000. + +# 6.2.1 - 2020-05-09 + +- Fixed ostream support in `sprintf` + (https://github.com/fmtlib/fmt/issues/1631). +- Fixed type detection when using implicit conversion to `string_view` + and ostream `operator<<` inconsistently + (https://github.com/fmtlib/fmt/issues/1662). + +# 6.2.0 - 2020-04-05 + +- Improved error reporting when trying to format an object of a + non-formattable type: + + ```c++ + fmt::format("{}", S()); + ``` + + now gives: + + include/fmt/core.h:1015:5: error: static_assert failed due to requirement + 'formattable' "Cannot format argument. To make type T formattable provide a + formatter specialization: + https://fmt.dev/latest/api.html#formatting-user-defined-types" + static_assert( + ^ + ... + note: in instantiation of function template specialization + 'fmt::v6::format' requested here + fmt::format("{}", S()); + ^ + + if `S` is not formattable. + +- Reduced the library size by \~10%. + +- Always print decimal point if `#` is specified + (https://github.com/fmtlib/fmt/issues/1476, + https://github.com/fmtlib/fmt/issues/1498): + + ```c++ + fmt::print("{:#.0f}", 42.0); + ``` + + now prints `42.` + +- Implemented the `'L'` specifier for locale-specific numeric + formatting to improve compatibility with `std::format`. The `'n'` + specifier is now deprecated and will be removed in the next major + release. + +- Moved OS-specific APIs such as `windows_error` from `fmt/format.h` + to `fmt/os.h`. You can define `FMT_DEPRECATED_INCLUDE_OS` to + automatically include `fmt/os.h` from `fmt/format.h` for + compatibility but this will be disabled in the next major release. + +- Added precision overflow detection in floating-point formatting. + +- Implemented detection of invalid use of `fmt::arg`. + +- Used `type_identity` to block unnecessary template argument + deduction. Thanks Tim Song. + +- Improved UTF-8 handling + (https://github.com/fmtlib/fmt/issues/1109): + + ```c++ + fmt::print("┌{0:─^{2}}┐\n" + "│{1: ^{2}}│\n" + "└{0:─^{2}}┘\n", "", "Прывітанне, свет!", 21); + ``` + + now prints: + + ┌─────────────────────┐ + │ Прывітанне, свет! │ + └─────────────────────┘ + + on systems that support Unicode. + +- Added experimental dynamic argument storage + (https://github.com/fmtlib/fmt/issues/1170, + https://github.com/fmtlib/fmt/pull/1584): + + ```c++ + fmt::dynamic_format_arg_store store; + store.push_back("answer"); + store.push_back(42); + fmt::vprint("The {} is {}.\n", store); + ``` + + prints: + + The answer is 42. + + Thanks @vsolontsov-ll. + +- Made `fmt::join` accept `initializer_list` + (https://github.com/fmtlib/fmt/pull/1591). Thanks @Rapotkinnik. + +- Fixed handling of empty tuples + (https://github.com/fmtlib/fmt/issues/1588). + +- Fixed handling of output iterators in `format_to_n` + (https://github.com/fmtlib/fmt/issues/1506). + +- Fixed formatting of `std::chrono::duration` types to wide output + (https://github.com/fmtlib/fmt/pull/1533). Thanks @zeffy. + +- Added const `begin` and `end` overload to buffers + (https://github.com/fmtlib/fmt/pull/1553). Thanks @dominicpoeschko. + +- Added the ability to disable floating-point formatting via + `FMT_USE_FLOAT`, `FMT_USE_DOUBLE` and `FMT_USE_LONG_DOUBLE` macros + for extremely memory-constrained embedded system + (https://github.com/fmtlib/fmt/pull/1590). Thanks @albaguirre. + +- Made `FMT_STRING` work with `constexpr` `string_view` + (https://github.com/fmtlib/fmt/pull/1589). Thanks @scramsby. + +- Implemented a minor optimization in the format string parser + (https://github.com/fmtlib/fmt/pull/1560). Thanks @IkarusDeveloper. + +- Improved attribute detection + (https://github.com/fmtlib/fmt/pull/1469, + https://github.com/fmtlib/fmt/pull/1475, + https://github.com/fmtlib/fmt/pull/1576). + Thanks @federico-busato, @chronoxor and @refnum. + +- Improved documentation + (https://github.com/fmtlib/fmt/pull/1481, + https://github.com/fmtlib/fmt/pull/1523). + Thanks @JackBoosY and @imba-tjd. + +- Fixed symbol visibility on Linux when compiling with + `-fvisibility=hidden` + (https://github.com/fmtlib/fmt/pull/1535). Thanks @milianw. + +- Implemented various build configuration fixes and improvements + (https://github.com/fmtlib/fmt/issues/1264, + https://github.com/fmtlib/fmt/issues/1460, + https://github.com/fmtlib/fmt/pull/1534, + https://github.com/fmtlib/fmt/issues/1536, + https://github.com/fmtlib/fmt/issues/1545, + https://github.com/fmtlib/fmt/pull/1546, + https://github.com/fmtlib/fmt/issues/1566, + https://github.com/fmtlib/fmt/pull/1582, + https://github.com/fmtlib/fmt/issues/1597, + https://github.com/fmtlib/fmt/pull/1598). + Thanks @ambitslix, @jwillikers and @stac47. + +- Fixed various warnings and compilation issues + (https://github.com/fmtlib/fmt/pull/1433, + https://github.com/fmtlib/fmt/issues/1461, + https://github.com/fmtlib/fmt/pull/1470, + https://github.com/fmtlib/fmt/pull/1480, + https://github.com/fmtlib/fmt/pull/1485, + https://github.com/fmtlib/fmt/pull/1492, + https://github.com/fmtlib/fmt/issues/1493, + https://github.com/fmtlib/fmt/issues/1504, + https://github.com/fmtlib/fmt/pull/1505, + https://github.com/fmtlib/fmt/pull/1512, + https://github.com/fmtlib/fmt/issues/1515, + https://github.com/fmtlib/fmt/pull/1516, + https://github.com/fmtlib/fmt/pull/1518, + https://github.com/fmtlib/fmt/pull/1519, + https://github.com/fmtlib/fmt/pull/1520, + https://github.com/fmtlib/fmt/pull/1521, + https://github.com/fmtlib/fmt/pull/1522, + https://github.com/fmtlib/fmt/issues/1524, + https://github.com/fmtlib/fmt/pull/1530, + https://github.com/fmtlib/fmt/issues/1531, + https://github.com/fmtlib/fmt/pull/1532, + https://github.com/fmtlib/fmt/issues/1539, + https://github.com/fmtlib/fmt/issues/1547, + https://github.com/fmtlib/fmt/issues/1548, + https://github.com/fmtlib/fmt/pull/1554, + https://github.com/fmtlib/fmt/issues/1567, + https://github.com/fmtlib/fmt/pull/1568, + https://github.com/fmtlib/fmt/pull/1569, + https://github.com/fmtlib/fmt/pull/1571, + https://github.com/fmtlib/fmt/pull/1573, + https://github.com/fmtlib/fmt/pull/1575, + https://github.com/fmtlib/fmt/pull/1581, + https://github.com/fmtlib/fmt/issues/1583, + https://github.com/fmtlib/fmt/issues/1586, + https://github.com/fmtlib/fmt/issues/1587, + https://github.com/fmtlib/fmt/issues/1594, + https://github.com/fmtlib/fmt/pull/1596, + https://github.com/fmtlib/fmt/issues/1604, + https://github.com/fmtlib/fmt/pull/1606, + https://github.com/fmtlib/fmt/issues/1607, + https://github.com/fmtlib/fmt/issues/1609). + Thanks @marti4d, @iPherian, @parkertomatoes, @gsjaardema, @chronoxor, + @DanielaE, @torsten48, @tohammer, @lefticus, @ryusakki, @adnsv, @fghzxm, + @refnum, @pramodk, @Spirrwell and @scramsby. + +# 6.1.2 - 2019-12-11 + +- Fixed ABI compatibility with `libfmt.so.6.0.0` + (https://github.com/fmtlib/fmt/issues/1471). +- Fixed handling types convertible to `std::string_view` + (https://github.com/fmtlib/fmt/pull/1451). Thanks @denizevrenci. +- Made CUDA test an opt-in enabled via the `FMT_CUDA_TEST` CMake + option. +- Fixed sign conversion warnings + (https://github.com/fmtlib/fmt/pull/1440). Thanks @0x8000-0000. + +# 6.1.1 - 2019-12-04 + +- Fixed shared library build on Windows + (https://github.com/fmtlib/fmt/pull/1443, + https://github.com/fmtlib/fmt/issues/1445, + https://github.com/fmtlib/fmt/pull/1446, + https://github.com/fmtlib/fmt/issues/1450). + Thanks @egorpugin and @bbolli. +- Added a missing decimal point in exponent notation with trailing + zeros. +- Removed deprecated `format_arg_store::TYPES`. + +# 6.1.0 - 2019-12-01 + +- {fmt} now formats IEEE 754 `float` and `double` using the shortest + decimal representation with correct rounding by default: + + ```c++ + #include + #include + + int main() { + fmt::print("{}", M_PI); + } + ``` + + prints `3.141592653589793`. + +- Made the fast binary to decimal floating-point formatter the + default, simplified it and improved performance. {fmt} is now 15 + times faster than libc++\'s `std::ostringstream`, 11 times faster + than `printf` and 10% faster than double-conversion on + [dtoa-benchmark](https://github.com/fmtlib/dtoa-benchmark): + + | Function | Time (ns) | Speedup | + | ------------- | --------: | ------: | + | ostringstream | 1,346.30 | 1.00x | + | ostrstream | 1,195.74 | 1.13x | + | sprintf | 995.08 | 1.35x | + | doubleconv | 99.10 | 13.59x | + | fmt | 88.34 | 15.24x | + + ![](https://user-images.githubusercontent.com/576385/69767160-cdaca400-112f-11ea-9fc5-347c9f83caad.png) + +- {fmt} no longer converts `float` arguments to `double`. In + particular this improves the default (shortest) representation of + floats and makes `fmt::format` consistent with `std::format` specs + (https://github.com/fmtlib/fmt/issues/1336, + https://github.com/fmtlib/fmt/issues/1353, + https://github.com/fmtlib/fmt/pull/1360, + https://github.com/fmtlib/fmt/pull/1361): + + ```c++ + fmt::print("{}", 0.1f); + ``` + + prints `0.1` instead of `0.10000000149011612`. + + Thanks @orivej. + +- Made floating-point formatting output consistent with + `printf`/iostreams + (https://github.com/fmtlib/fmt/issues/1376, + https://github.com/fmtlib/fmt/issues/1417). + +- Added support for 128-bit integers + (https://github.com/fmtlib/fmt/pull/1287): + + ```c++ + fmt::print("{}", std::numeric_limits<__int128_t>::max()); + ``` + + prints `170141183460469231731687303715884105727`. + + Thanks @denizevrenci. + +- The overload of `print` that takes `text_style` is now atomic, i.e. + the output from different threads doesn\'t interleave + (https://github.com/fmtlib/fmt/pull/1351). Thanks @tankiJong. + +- Made compile time in the header-only mode \~20% faster by reducing + the number of template instantiations. `wchar_t` overload of + `vprint` was moved from `fmt/core.h` to `fmt/format.h`. + +- Added an overload of `fmt::join` that works with tuples + (https://github.com/fmtlib/fmt/issues/1322, + https://github.com/fmtlib/fmt/pull/1330): + + ```c++ + #include + #include + + int main() { + std::tuple t{'a', 1, 2.0f}; + fmt::print("{}", t); + } + ``` + + prints `('a', 1, 2.0)`. + + Thanks @jeremyong. + +- Changed formatting of octal zero with prefix from \"00\" to \"0\": + + ```c++ + fmt::print("{:#o}", 0); + ``` + + prints `0`. + +- The locale is now passed to ostream insertion (`<<`) operators + (https://github.com/fmtlib/fmt/pull/1406): + + ```c++ + #include + #include + + struct S { + double value; + }; + + std::ostream& operator<<(std::ostream& os, S s) { + return os << s.value; + } + + int main() { + auto s = fmt::format(std::locale("fr_FR.UTF-8"), "{}", S{0.42}); + // s == "0,42" + } + ``` + + Thanks @dlaugt. + +- Locale-specific number formatting now uses grouping + (https://github.com/fmtlib/fmt/issues/1393, + https://github.com/fmtlib/fmt/pull/1394). Thanks @skrdaniel. + +- Fixed handling of types with deleted implicit rvalue conversion to + `const char**` (https://github.com/fmtlib/fmt/issues/1421): + + ```c++ + struct mystring { + operator const char*() const&; + operator const char*() &; + operator const char*() const&& = delete; + operator const char*() && = delete; + }; + mystring str; + fmt::print("{}", str); // now compiles + ``` + +- Enums are now mapped to correct underlying types instead of `int` + (https://github.com/fmtlib/fmt/pull/1286). Thanks @agmt. + +- Enum classes are no longer implicitly converted to `int` + (https://github.com/fmtlib/fmt/issues/1424). + +- Added `basic_format_parse_context` for consistency with C++20 + `std::format` and deprecated `basic_parse_context`. + +- Fixed handling of UTF-8 in precision + (https://github.com/fmtlib/fmt/issues/1389, + https://github.com/fmtlib/fmt/pull/1390). Thanks @tajtiattila. + +- {fmt} can now be installed on Linux, macOS and Windows with + [Conda](https://docs.conda.io/en/latest/) using its + [conda-forge](https://conda-forge.org) + [package](https://github.com/conda-forge/fmt-feedstock) + (https://github.com/fmtlib/fmt/pull/1410): + + conda install -c conda-forge fmt + + Thanks @tdegeus. + +- Added a CUDA test (https://github.com/fmtlib/fmt/pull/1285, + https://github.com/fmtlib/fmt/pull/1317). + Thanks @luncliff and @risa2000. + +- Improved documentation + (https://github.com/fmtlib/fmt/pull/1276, + https://github.com/fmtlib/fmt/issues/1291, + https://github.com/fmtlib/fmt/issues/1296, + https://github.com/fmtlib/fmt/pull/1315, + https://github.com/fmtlib/fmt/pull/1332, + https://github.com/fmtlib/fmt/pull/1337, + https://github.com/fmtlib/fmt/issues/1395 + https://github.com/fmtlib/fmt/pull/1418). + Thanks @waywardmonkeys, @pauldreik and @jackoalan. + +- Various code improvements + (https://github.com/fmtlib/fmt/pull/1358, + https://github.com/fmtlib/fmt/pull/1407). + Thanks @orivej and @dpacbach. + +- Fixed compile-time format string checks for user-defined types + (https://github.com/fmtlib/fmt/issues/1292). + +- Worked around a false positive in `unsigned-integer-overflow` sanitizer + (https://github.com/fmtlib/fmt/issues/1377). + +- Fixed various warnings and compilation issues + (https://github.com/fmtlib/fmt/issues/1273, + https://github.com/fmtlib/fmt/pull/1278, + https://github.com/fmtlib/fmt/pull/1280, + https://github.com/fmtlib/fmt/issues/1281, + https://github.com/fmtlib/fmt/issues/1288, + https://github.com/fmtlib/fmt/pull/1290, + https://github.com/fmtlib/fmt/pull/1301, + https://github.com/fmtlib/fmt/issues/1305, + https://github.com/fmtlib/fmt/issues/1306, + https://github.com/fmtlib/fmt/issues/1309, + https://github.com/fmtlib/fmt/pull/1312, + https://github.com/fmtlib/fmt/issues/1313, + https://github.com/fmtlib/fmt/issues/1316, + https://github.com/fmtlib/fmt/issues/1319, + https://github.com/fmtlib/fmt/pull/1320, + https://github.com/fmtlib/fmt/pull/1326, + https://github.com/fmtlib/fmt/pull/1328, + https://github.com/fmtlib/fmt/issues/1344, + https://github.com/fmtlib/fmt/pull/1345, + https://github.com/fmtlib/fmt/pull/1347, + https://github.com/fmtlib/fmt/pull/1349, + https://github.com/fmtlib/fmt/issues/1354, + https://github.com/fmtlib/fmt/issues/1362, + https://github.com/fmtlib/fmt/issues/1366, + https://github.com/fmtlib/fmt/pull/1364, + https://github.com/fmtlib/fmt/pull/1370, + https://github.com/fmtlib/fmt/pull/1371, + https://github.com/fmtlib/fmt/issues/1385, + https://github.com/fmtlib/fmt/issues/1388, + https://github.com/fmtlib/fmt/pull/1397, + https://github.com/fmtlib/fmt/pull/1414, + https://github.com/fmtlib/fmt/pull/1416, + https://github.com/fmtlib/fmt/issues/1422 + https://github.com/fmtlib/fmt/pull/1427, + https://github.com/fmtlib/fmt/issues/1431, + https://github.com/fmtlib/fmt/pull/1433). + Thanks @hhb, @gsjaardema, @gabime, @neheb, @vedranmiletic, @dkavolis, + @mwinterb, @orivej, @denizevrenci, @leonklingele, @chronoxor, @kent-tri, + @0x8000-0000 and @marti4d. + +# 6.0.0 - 2019-08-26 + +- Switched to the [MIT license]( + https://github.com/fmtlib/fmt/blob/5a4b24613ba16cc689977c3b5bd8274a3ba1dd1f/LICENSE.rst) + with an optional exception that allows distributing binary code + without attribution. + +- Floating-point formatting is now locale-independent by default: + + ```c++ + #include + #include + + int main() { + std::locale::global(std::locale("ru_RU.UTF-8")); + fmt::print("value = {}", 4.2); + } + ``` + + prints \"value = 4.2\" regardless of the locale. + + For locale-specific formatting use the `n` specifier: + + ```c++ + std::locale::global(std::locale("ru_RU.UTF-8")); + fmt::print("value = {:n}", 4.2); + ``` + + prints \"value = 4,2\". + +- Added an experimental Grisu floating-point formatting algorithm + implementation (disabled by default). To enable it compile with the + `FMT_USE_GRISU` macro defined to 1: + + ```c++ + #define FMT_USE_GRISU 1 + #include + + auto s = fmt::format("{}", 4.2); // formats 4.2 using Grisu + ``` + + With Grisu enabled, {fmt} is 13x faster than `std::ostringstream` + (libc++) and 10x faster than `sprintf` on + [dtoa-benchmark](https://github.com/fmtlib/dtoa-benchmark) ([full + results](https://fmt.dev/unknown_mac64_clang10.0.html)): + + ![](https://user-images.githubusercontent.com/576385/54883977-9fe8c000-4e28-11e9-8bde-272d122e7c52.jpg) + +- Separated formatting and parsing contexts for consistency with + [C++20 std::format](http://eel.is/c++draft/format), removing the + undocumented `basic_format_context::parse_context()` function. + +- Added [oss-fuzz](https://github.com/google/oss-fuzz) support + (https://github.com/fmtlib/fmt/pull/1199). Thanks @pauldreik. + +- `formatter` specializations now always take precedence over + `operator<<` (https://github.com/fmtlib/fmt/issues/952): + + ```c++ + #include + #include + + struct S {}; + + std::ostream& operator<<(std::ostream& os, S) { + return os << 1; + } + + template <> + struct fmt::formatter : fmt::formatter { + auto format(S, format_context& ctx) { + return formatter::format(2, ctx); + } + }; + + int main() { + std::cout << S() << "\n"; // prints 1 using operator<< + fmt::print("{}\n", S()); // prints 2 using formatter + } + ``` + +- Introduced the experimental `fmt::compile` function that does format + string compilation + (https://github.com/fmtlib/fmt/issues/618, + https://github.com/fmtlib/fmt/issues/1169, + https://github.com/fmtlib/fmt/pull/1171): + + ```c++ + #include + + auto f = fmt::compile("{}"); + std::string s = fmt::format(f, 42); // can be called multiple times to + // format different values + // s == "42" + ``` + + It moves the cost of parsing a format string outside of the format + function which can be beneficial when identically formatting many + objects of the same types. Thanks @stryku. + +- Added experimental `%` format specifier that formats floating-point + values as percentages + (https://github.com/fmtlib/fmt/pull/1060, + https://github.com/fmtlib/fmt/pull/1069, + https://github.com/fmtlib/fmt/pull/1071): + + ```c++ + auto s = fmt::format("{:.1%}", 0.42); // s == "42.0%" + ``` + + Thanks @gawain-bolton. + +- Implemented precision for floating-point durations + (https://github.com/fmtlib/fmt/issues/1004, + https://github.com/fmtlib/fmt/pull/1012): + + ```c++ + auto s = fmt::format("{:.1}", std::chrono::duration(1.234)); + // s == 1.2s + ``` + + Thanks @DanielaE. + +- Implemented `chrono` format specifiers `%Q` and `%q` that give the + value and the unit respectively + (https://github.com/fmtlib/fmt/pull/1019): + + ```c++ + auto value = fmt::format("{:%Q}", 42s); // value == "42" + auto unit = fmt::format("{:%q}", 42s); // unit == "s" + ``` + + Thanks @DanielaE. + +- Fixed handling of dynamic width in chrono formatter: + + ```c++ + auto s = fmt::format("{0:{1}%H:%M:%S}", std::chrono::seconds(12345), 12); + // ^ width argument index ^ width + // s == "03:25:45 " + ``` + + Thanks Howard Hinnant. + +- Removed deprecated `fmt/time.h`. Use `fmt/chrono.h` instead. + +- Added `fmt::format` and `fmt::vformat` overloads that take + `text_style` (https://github.com/fmtlib/fmt/issues/993, + https://github.com/fmtlib/fmt/pull/994): + + ```c++ + #include + + std::string message = fmt::format(fmt::emphasis::bold | fg(fmt::color::red), + "The answer is {}.", 42); + ``` + + Thanks @Naios. + +- Removed the deprecated color API (`print_colored`). Use the new API, + namely `print` overloads that take `text_style` instead. + +- Made `std::unique_ptr` and `std::shared_ptr` formattable as pointers + via `fmt::ptr` (https://github.com/fmtlib/fmt/pull/1121): + + ```c++ + std::unique_ptr p = ...; + fmt::print("{}", fmt::ptr(p)); // prints p as a pointer + ``` + + Thanks @sighingnow. + +- Made `print` and `vprint` report I/O errors + (https://github.com/fmtlib/fmt/issues/1098, + https://github.com/fmtlib/fmt/pull/1099). Thanks @BillyDonahue. + +- Marked deprecated APIs with the `[[deprecated]]` attribute and + removed internal uses of deprecated APIs + (https://github.com/fmtlib/fmt/pull/1022). Thanks @eliaskosunen. + +- Modernized the codebase using more C++11 features and removing + workarounds. Most importantly, `buffer_context` is now an alias + template, so use `buffer_context` instead of + `buffer_context::type`. These features require GCC 4.8 or later. + +- `formatter` specializations now always take precedence over implicit + conversions to `int` and the undocumented `convert_to_int` trait is + now deprecated. + +- Moved the undocumented `basic_writer`, `writer`, and `wwriter` types + to the `internal` namespace. + +- Removed deprecated `basic_format_context::begin()`. Use `out()` + instead. + +- Disallowed passing the result of `join` as an lvalue to prevent + misuse. + +- Refactored the undocumented structs that represent parsed format + specifiers to simplify the API and allow multibyte fill. + +- Moved SFINAE to template parameters to reduce symbol sizes. + +- Switched to `fputws` for writing wide strings so that it\'s no + longer required to call `_setmode` on Windows + (https://github.com/fmtlib/fmt/issues/1229, + https://github.com/fmtlib/fmt/pull/1243). Thanks @jackoalan. + +- Improved literal-based API + (https://github.com/fmtlib/fmt/pull/1254). Thanks @sylveon. + +- Added support for exotic platforms without `uintptr_t` such as IBM i + (AS/400) which has 128-bit pointers and only 64-bit integers + (https://github.com/fmtlib/fmt/issues/1059). + +- Added [Sublime Text syntax highlighting config]( + https://github.com/fmtlib/fmt/blob/master/support/C%2B%2B.sublime-syntax) + (https://github.com/fmtlib/fmt/issues/1037). Thanks @Kronuz. + +- Added the `FMT_ENFORCE_COMPILE_STRING` macro to enforce the use of + compile-time format strings + (https://github.com/fmtlib/fmt/pull/1231). Thanks @jackoalan. + +- Stopped setting `CMAKE_BUILD_TYPE` if {fmt} is a subproject + (https://github.com/fmtlib/fmt/issues/1081). + +- Various build improvements + (https://github.com/fmtlib/fmt/pull/1039, + https://github.com/fmtlib/fmt/pull/1078, + https://github.com/fmtlib/fmt/pull/1091, + https://github.com/fmtlib/fmt/pull/1103, + https://github.com/fmtlib/fmt/pull/1177). + Thanks @luncliff, @jasonszang, @olafhering, @Lecetem and @pauldreik. + +- Improved documentation + (https://github.com/fmtlib/fmt/issues/1049, + https://github.com/fmtlib/fmt/pull/1051, + https://github.com/fmtlib/fmt/pull/1083, + https://github.com/fmtlib/fmt/pull/1113, + https://github.com/fmtlib/fmt/pull/1114, + https://github.com/fmtlib/fmt/issues/1146, + https://github.com/fmtlib/fmt/issues/1180, + https://github.com/fmtlib/fmt/pull/1250, + https://github.com/fmtlib/fmt/pull/1252, + https://github.com/fmtlib/fmt/pull/1265). + Thanks @mikelui, @foonathan, @BillyDonahue, @jwakely, @kaisbe and + @sdebionne. + +- Fixed ambiguous formatter specialization in `fmt/ranges.h` + (https://github.com/fmtlib/fmt/issues/1123). + +- Fixed formatting of a non-empty `std::filesystem::path` which is an + infinitely deep range of its components + (https://github.com/fmtlib/fmt/issues/1268). + +- Fixed handling of general output iterators when formatting + characters (https://github.com/fmtlib/fmt/issues/1056, + https://github.com/fmtlib/fmt/pull/1058). Thanks @abolz. + +- Fixed handling of output iterators in `formatter` specialization for + ranges (https://github.com/fmtlib/fmt/issues/1064). + +- Fixed handling of exotic character types + (https://github.com/fmtlib/fmt/issues/1188). + +- Made chrono formatting work with exceptions disabled + (https://github.com/fmtlib/fmt/issues/1062). + +- Fixed DLL visibility issues + (https://github.com/fmtlib/fmt/pull/1134, + https://github.com/fmtlib/fmt/pull/1147). Thanks @denchat. + +- Disabled the use of UDL template extension on GCC 9 + (https://github.com/fmtlib/fmt/issues/1148). + +- Removed misplaced `format` compile-time checks from `printf` + (https://github.com/fmtlib/fmt/issues/1173). + +- Fixed issues in the experimental floating-point formatter + (https://github.com/fmtlib/fmt/issues/1072, + https://github.com/fmtlib/fmt/issues/1129, + https://github.com/fmtlib/fmt/issues/1153, + https://github.com/fmtlib/fmt/pull/1155, + https://github.com/fmtlib/fmt/issues/1210, + https://github.com/fmtlib/fmt/issues/1222). Thanks @alabuzhev. + +- Fixed bugs discovered by fuzzing or during fuzzing integration + (https://github.com/fmtlib/fmt/issues/1124, + https://github.com/fmtlib/fmt/issues/1127, + https://github.com/fmtlib/fmt/issues/1132, + https://github.com/fmtlib/fmt/pull/1135, + https://github.com/fmtlib/fmt/issues/1136, + https://github.com/fmtlib/fmt/issues/1141, + https://github.com/fmtlib/fmt/issues/1142, + https://github.com/fmtlib/fmt/issues/1178, + https://github.com/fmtlib/fmt/issues/1179, + https://github.com/fmtlib/fmt/issues/1194). Thanks @pauldreik. + +- Fixed building tests on FreeBSD and Hurd + (https://github.com/fmtlib/fmt/issues/1043). Thanks @jackyf. + +- Fixed various warnings and compilation issues + (https://github.com/fmtlib/fmt/pull/998, + https://github.com/fmtlib/fmt/pull/1006, + https://github.com/fmtlib/fmt/issues/1008, + https://github.com/fmtlib/fmt/issues/1011, + https://github.com/fmtlib/fmt/issues/1025, + https://github.com/fmtlib/fmt/pull/1027, + https://github.com/fmtlib/fmt/pull/1028, + https://github.com/fmtlib/fmt/pull/1029, + https://github.com/fmtlib/fmt/pull/1030, + https://github.com/fmtlib/fmt/pull/1031, + https://github.com/fmtlib/fmt/pull/1054, + https://github.com/fmtlib/fmt/issues/1063, + https://github.com/fmtlib/fmt/pull/1068, + https://github.com/fmtlib/fmt/pull/1074, + https://github.com/fmtlib/fmt/pull/1075, + https://github.com/fmtlib/fmt/pull/1079, + https://github.com/fmtlib/fmt/pull/1086, + https://github.com/fmtlib/fmt/issues/1088, + https://github.com/fmtlib/fmt/pull/1089, + https://github.com/fmtlib/fmt/pull/1094, + https://github.com/fmtlib/fmt/issues/1101, + https://github.com/fmtlib/fmt/pull/1102, + https://github.com/fmtlib/fmt/issues/1105, + https://github.com/fmtlib/fmt/pull/1107, + https://github.com/fmtlib/fmt/issues/1115, + https://github.com/fmtlib/fmt/issues/1117, + https://github.com/fmtlib/fmt/issues/1118, + https://github.com/fmtlib/fmt/issues/1120, + https://github.com/fmtlib/fmt/issues/1123, + https://github.com/fmtlib/fmt/pull/1139, + https://github.com/fmtlib/fmt/issues/1140, + https://github.com/fmtlib/fmt/issues/1143, + https://github.com/fmtlib/fmt/pull/1144, + https://github.com/fmtlib/fmt/pull/1150, + https://github.com/fmtlib/fmt/pull/1151, + https://github.com/fmtlib/fmt/issues/1152, + https://github.com/fmtlib/fmt/issues/1154, + https://github.com/fmtlib/fmt/issues/1156, + https://github.com/fmtlib/fmt/pull/1159, + https://github.com/fmtlib/fmt/issues/1175, + https://github.com/fmtlib/fmt/issues/1181, + https://github.com/fmtlib/fmt/issues/1186, + https://github.com/fmtlib/fmt/pull/1187, + https://github.com/fmtlib/fmt/pull/1191, + https://github.com/fmtlib/fmt/issues/1197, + https://github.com/fmtlib/fmt/issues/1200, + https://github.com/fmtlib/fmt/issues/1203, + https://github.com/fmtlib/fmt/issues/1205, + https://github.com/fmtlib/fmt/pull/1206, + https://github.com/fmtlib/fmt/issues/1213, + https://github.com/fmtlib/fmt/issues/1214, + https://github.com/fmtlib/fmt/pull/1217, + https://github.com/fmtlib/fmt/issues/1228, + https://github.com/fmtlib/fmt/pull/1230, + https://github.com/fmtlib/fmt/issues/1232, + https://github.com/fmtlib/fmt/pull/1235, + https://github.com/fmtlib/fmt/pull/1236, + https://github.com/fmtlib/fmt/issues/1240). + Thanks @DanielaE, @mwinterb, @eliaskosunen, @morinmorin, @ricco19, + @waywardmonkeys, @chronoxor, @remyabel, @pauldreik, @gsjaardema, @rcane, + @mocabe, @denchat, @cjdb, @HazardyKnusperkeks, @vedranmiletic, @jackoalan, + @DaanDeMeyer and @starkmapper. + +# 5.3.0 - 2018-12-28 + +- Introduced experimental chrono formatting support: + + ```c++ + #include + + int main() { + using namespace std::literals::chrono_literals; + fmt::print("Default format: {} {}\n", 42s, 100ms); + fmt::print("strftime-like format: {:%H:%M:%S}\n", 3h + 15min + 30s); + } + ``` + + prints: + + Default format: 42s 100ms + strftime-like format: 03:15:30 + +- Added experimental support for emphasis (bold, italic, underline, + strikethrough), colored output to a file stream, and improved + colored formatting API + (https://github.com/fmtlib/fmt/pull/961, + https://github.com/fmtlib/fmt/pull/967, + https://github.com/fmtlib/fmt/pull/973): + + ```c++ + #include + + int main() { + fmt::print(fg(fmt::color::crimson) | fmt::emphasis::bold, + "Hello, {}!\n", "world"); + fmt::print(fg(fmt::color::floral_white) | bg(fmt::color::slate_gray) | + fmt::emphasis::underline, "Olá, {}!\n", "Mundo"); + fmt::print(fg(fmt::color::steel_blue) | fmt::emphasis::italic, + "你好{}！\n", "世界"); + } + ``` + + prints the following on modern terminals with RGB color support: + + ![](https://github.com/fmtlib/fmt/assets/%0A576385/2a93c904-d6fa-4aa6-b453-2618e1c327d7) + + Thanks @Rakete1111. + +- Added support for 4-bit terminal colors + (https://github.com/fmtlib/fmt/issues/968, + https://github.com/fmtlib/fmt/pull/974) + + ```c++ + #include + + int main() { + print(fg(fmt::terminal_color::red), "stop\n"); + } + ``` + + Note that these colors vary by terminal: + + ![](https://user-images.githubusercontent.com/576385/50405925-dbfc7e00-0770-11e9-9b85-333fab0af9ac.png) + + Thanks @Rakete1111. + +- Parameterized formatting functions on the type of the format string + (https://github.com/fmtlib/fmt/issues/880, + https://github.com/fmtlib/fmt/pull/881, + https://github.com/fmtlib/fmt/pull/883, + https://github.com/fmtlib/fmt/pull/885, + https://github.com/fmtlib/fmt/pull/897, + https://github.com/fmtlib/fmt/issues/920). Any object of + type `S` that has an overloaded `to_string_view(const S&)` returning + `fmt::string_view` can be used as a format string: + + ```c++ + namespace my_ns { + inline string_view to_string_view(const my_string& s) { + return {s.data(), s.length()}; + } + } + + std::string message = fmt::format(my_string("The answer is {}."), 42); + ``` + + Thanks @DanielaE. + +- Made `std::string_view` work as a format string + (https://github.com/fmtlib/fmt/pull/898): + + ```c++ + auto message = fmt::format(std::string_view("The answer is {}."), 42); + ``` + + Thanks @DanielaE. + +- Added wide string support to compile-time format string checks + (https://github.com/fmtlib/fmt/pull/924): + + ```c++ + print(fmt(L"{:f}"), 42); // compile-time error: invalid type specifier + ``` + + Thanks @XZiar. + +- Made colored print functions work with wide strings + (https://github.com/fmtlib/fmt/pull/867): + + ```c++ + #include + + int main() { + print(fg(fmt::color::red), L"{}\n", 42); + } + ``` + + Thanks @DanielaE. + +- Introduced experimental Unicode support + (https://github.com/fmtlib/fmt/issues/628, + https://github.com/fmtlib/fmt/pull/891): + + ```c++ + using namespace fmt::literals; + auto s = fmt::format("{:*^5}"_u, "🤡"_u); // s == "**🤡**"_u + ``` + +- Improved locale support: + + ```c++ + #include + + struct numpunct : std::numpunct { + protected: + char do_thousands_sep() const override { return '~'; } + }; + + std::locale loc; + auto s = fmt::format(std::locale(loc, new numpunct()), "{:n}", 1234567); + // s == "1~234~567" + ``` + +- Constrained formatting functions on proper iterator types + (https://github.com/fmtlib/fmt/pull/921). Thanks @DanielaE. + +- Added `make_printf_args` and `make_wprintf_args` functions + (https://github.com/fmtlib/fmt/pull/934). Thanks @tnovotny. + +- Deprecated `fmt::visit`, `parse_context`, and `wparse_context`. Use + `fmt::visit_format_arg`, `format_parse_context`, and + `wformat_parse_context` instead. + +- Removed undocumented `basic_fixed_buffer` which has been superseded + by the iterator-based API + (https://github.com/fmtlib/fmt/issues/873, + https://github.com/fmtlib/fmt/pull/902). Thanks @superfunc. + +- Disallowed repeated leading zeros in an argument ID: + + ```c++ + fmt::print("{000}", 42); // error + ``` + +- Reintroduced support for gcc 4.4. + +- Fixed compilation on platforms with exotic `double` + (https://github.com/fmtlib/fmt/issues/878). + +- Improved documentation + (https://github.com/fmtlib/fmt/issues/164, + https://github.com/fmtlib/fmt/issues/877, + https://github.com/fmtlib/fmt/pull/901, + https://github.com/fmtlib/fmt/pull/906, + https://github.com/fmtlib/fmt/pull/979). + Thanks @kookjr, @DarkDimius and @HecticSerenity. + +- Added pkgconfig support which makes it easier to consume the library + from meson and other build systems + (https://github.com/fmtlib/fmt/pull/916). Thanks @colemickens. + +- Various build improvements + (https://github.com/fmtlib/fmt/pull/909, + https://github.com/fmtlib/fmt/pull/926, + https://github.com/fmtlib/fmt/pull/937, + https://github.com/fmtlib/fmt/pull/953, + https://github.com/fmtlib/fmt/pull/959). + Thanks @tchaikov, @luncliff, @AndreasSchoenle, @hotwatermorning and @Zefz. + +- Improved `string_view` construction performance + (https://github.com/fmtlib/fmt/pull/914). Thanks @gabime. + +- Fixed non-matching char types + (https://github.com/fmtlib/fmt/pull/895). Thanks @DanielaE. + +- Fixed `format_to_n` with `std::back_insert_iterator` + (https://github.com/fmtlib/fmt/pull/913). Thanks @DanielaE. + +- Fixed locale-dependent formatting + (https://github.com/fmtlib/fmt/issues/905). + +- Fixed various compiler warnings and errors + (https://github.com/fmtlib/fmt/pull/882, + https://github.com/fmtlib/fmt/pull/886, + https://github.com/fmtlib/fmt/pull/933, + https://github.com/fmtlib/fmt/pull/941, + https://github.com/fmtlib/fmt/issues/931, + https://github.com/fmtlib/fmt/pull/943, + https://github.com/fmtlib/fmt/pull/954, + https://github.com/fmtlib/fmt/pull/956, + https://github.com/fmtlib/fmt/pull/962, + https://github.com/fmtlib/fmt/issues/965, + https://github.com/fmtlib/fmt/issues/977, + https://github.com/fmtlib/fmt/pull/983, + https://github.com/fmtlib/fmt/pull/989). + Thanks @Luthaf, @stevenhoving, @christinaa, @lgritz, @DanielaE, + @0x8000-0000 and @liuping1997. + +# 5.2.1 - 2018-09-21 + +- Fixed `visit` lookup issues on gcc 7 & 8 + (https://github.com/fmtlib/fmt/pull/870). Thanks @medithe. +- Fixed linkage errors on older gcc. +- Prevented `fmt/range.h` from specializing `fmt::basic_string_view` + (https://github.com/fmtlib/fmt/issues/865, + https://github.com/fmtlib/fmt/pull/868). Thanks @hhggit. +- Improved error message when formatting unknown types + (https://github.com/fmtlib/fmt/pull/872). Thanks @foonathan. +- Disabled templated user-defined literals when compiled under nvcc + (https://github.com/fmtlib/fmt/pull/875). Thanks @CandyGumdrop. +- Fixed `format_to` formatting to `wmemory_buffer` + (https://github.com/fmtlib/fmt/issues/874). + +# 5.2.0 - 2018-09-13 + +- Optimized format string parsing and argument processing which + resulted in up to 5x speed up on long format strings and significant + performance boost on various benchmarks. For example, version 5.2 is + 2.22x faster than 5.1 on decimal integer formatting with `format_to` + (macOS, clang-902.0.39.2): + + | Method | Time, s | Speedup | + | -------------------------- | --------------: | ------: | + | fmt::format 5.1 | 0.58 | | + | fmt::format 5.2 | 0.35 | 1.66x | + | fmt::format_to 5.1 | 0.51 | | + | fmt::format_to 5.2 | 0.23 | 2.22x | + | sprintf | 0.71 | | + | std::to_string | 1.01 | | + | std::stringstream | 1.73 | | + +- Changed the `fmt` macro from opt-out to opt-in to prevent name + collisions. To enable it define the `FMT_STRING_ALIAS` macro to 1 + before including `fmt/format.h`: + + ```c++ + #define FMT_STRING_ALIAS 1 + #include + std::string answer = format(fmt("{}"), 42); + ``` + +- Added compile-time format string checks to `format_to` overload that + takes `fmt::memory_buffer` + (https://github.com/fmtlib/fmt/issues/783): + + ```c++ + fmt::memory_buffer buf; + // Compile-time error: invalid type specifier. + fmt::format_to(buf, fmt("{:d}"), "foo"); + ``` + +- Moved experimental color support to `fmt/color.h` and enabled the + new API by default. The old API can be enabled by defining the + `FMT_DEPRECATED_COLORS` macro. + +- Added formatting support for types explicitly convertible to + `fmt::string_view`: + + ```c++ + struct foo { + explicit operator fmt::string_view() const { return "foo"; } + }; + auto s = format("{}", foo()); + ``` + + In particular, this makes formatting function work with + `folly::StringPiece`. + +- Implemented preliminary support for `char*_t` by replacing the + `format` function overloads with a single function template + parameterized on the string type. + +- Added support for dynamic argument lists + (https://github.com/fmtlib/fmt/issues/814, + https://github.com/fmtlib/fmt/pull/819). Thanks @MikePopoloski. + +- Reduced executable size overhead for embedded targets using newlib + nano by making locale dependency optional + (https://github.com/fmtlib/fmt/pull/839). Thanks @teajay-fr. + +- Keep `noexcept` specifier when exceptions are disabled + (https://github.com/fmtlib/fmt/issues/801, + https://github.com/fmtlib/fmt/pull/810). Thanks @qis. + +- Fixed formatting of user-defined types providing `operator<<` with + `format_to_n` (https://github.com/fmtlib/fmt/pull/806). + Thanks @mkurdej. + +- Fixed dynamic linkage of new symbols + (https://github.com/fmtlib/fmt/issues/808). + +- Fixed global initialization issue + (https://github.com/fmtlib/fmt/issues/807): + + ```c++ + // This works on compilers with constexpr support. + static const std::string answer = fmt::format("{}", 42); + ``` + +- Fixed various compiler warnings and errors + (https://github.com/fmtlib/fmt/pull/804, + https://github.com/fmtlib/fmt/issues/809, + https://github.com/fmtlib/fmt/pull/811, + https://github.com/fmtlib/fmt/issues/822, + https://github.com/fmtlib/fmt/pull/827, + https://github.com/fmtlib/fmt/issues/830, + https://github.com/fmtlib/fmt/pull/838, + https://github.com/fmtlib/fmt/issues/843, + https://github.com/fmtlib/fmt/pull/844, + https://github.com/fmtlib/fmt/issues/851, + https://github.com/fmtlib/fmt/pull/852, + https://github.com/fmtlib/fmt/pull/854). + Thanks @henryiii, @medithe, and @eliasdaler. + +# 5.1.0 - 2018-07-05 + +- Added experimental support for RGB color output enabled with the + `FMT_EXTENDED_COLORS` macro: + + ```c++ + #define FMT_EXTENDED_COLORS + #define FMT_HEADER_ONLY // or compile fmt with FMT_EXTENDED_COLORS defined + #include + + fmt::print(fmt::color::steel_blue, "Some beautiful text"); + ``` + + The old API (the `print_colored` and `vprint_colored` functions and + the `color` enum) is now deprecated. + (https://github.com/fmtlib/fmt/issues/762 + https://github.com/fmtlib/fmt/pull/767). thanks @Remotion. + +- Added quotes to strings in ranges and tuples + (https://github.com/fmtlib/fmt/pull/766). Thanks @Remotion. + +- Made `format_to` work with `basic_memory_buffer` + (https://github.com/fmtlib/fmt/issues/776). + +- Added `vformat_to_n` and `wchar_t` overload of `format_to_n` + (https://github.com/fmtlib/fmt/issues/764, + https://github.com/fmtlib/fmt/issues/769). + +- Made `is_range` and `is_tuple_like` part of public (experimental) + API to allow specialization for user-defined types + (https://github.com/fmtlib/fmt/issues/751, + https://github.com/fmtlib/fmt/pull/759). Thanks @drrlvn. + +- Added more compilers to continuous integration and increased + `FMT_PEDANTIC` warning levels + (https://github.com/fmtlib/fmt/pull/736). Thanks @eliaskosunen. + +- Fixed compilation with MSVC 2013. + +- Fixed handling of user-defined types in `format_to` + (https://github.com/fmtlib/fmt/issues/793). + +- Forced linking of inline `vformat` functions into the library + (https://github.com/fmtlib/fmt/issues/795). + +- Fixed incorrect call to on_align in `'{:}='` + (https://github.com/fmtlib/fmt/issues/750). + +- Fixed floating-point formatting to a non-back_insert_iterator with + sign & numeric alignment specified + (https://github.com/fmtlib/fmt/issues/756). + +- Fixed formatting to an array with `format_to_n` + (https://github.com/fmtlib/fmt/issues/778). + +- Fixed formatting of more than 15 named arguments + (https://github.com/fmtlib/fmt/issues/754). + +- Fixed handling of compile-time strings when including + `fmt/ostream.h`. (https://github.com/fmtlib/fmt/issues/768). + +- Fixed various compiler warnings and errors + (https://github.com/fmtlib/fmt/issues/742, + https://github.com/fmtlib/fmt/issues/748, + https://github.com/fmtlib/fmt/issues/752, + https://github.com/fmtlib/fmt/issues/770, + https://github.com/fmtlib/fmt/pull/775, + https://github.com/fmtlib/fmt/issues/779, + https://github.com/fmtlib/fmt/pull/780, + https://github.com/fmtlib/fmt/pull/790, + https://github.com/fmtlib/fmt/pull/792, + https://github.com/fmtlib/fmt/pull/800). + Thanks @Remotion, @gabime, @foonathan, @Dark-Passenger and @0x8000-0000. + +# 5.0.0 - 2018-05-21 + +- Added a requirement for partial C++11 support, most importantly + variadic templates and type traits, and dropped `FMT_VARIADIC_*` + emulation macros. Variadic templates are available since GCC 4.4, + Clang 2.9 and MSVC 18.0 (2013). For older compilers use {fmt} + [version 4.x](https://github.com/fmtlib/fmt/releases/tag/4.1.0) + which continues to be maintained and works with C++98 compilers. + +- Renamed symbols to follow standard C++ naming conventions and + proposed a subset of the library for standardization in [P0645R2 + Text Formatting](https://wg21.link/P0645). + +- Implemented `constexpr` parsing of format strings and [compile-time + format string + checks](https://fmt.dev/latest/api.html#compile-time-format-string-checks). + For example + + ```c++ + #include + + std::string s = format(fmt("{:d}"), "foo"); + ``` + + gives a compile-time error because `d` is an invalid specifier for + strings ([godbolt](https://godbolt.org/g/rnCy9Q)): + + ... + :4:19: note: in instantiation of function template specialization 'fmt::v5::format' requested here + std::string s = format(fmt("{:d}"), "foo"); + ^ + format.h:1337:13: note: non-constexpr function 'on_error' cannot be used in a constant expression + handler.on_error("invalid type specifier"); + + Compile-time checks require relaxed `constexpr` (C++14 feature) + support. If the latter is not available, checks will be performed at + runtime. + +- Separated format string parsing and formatting in the extension API + to enable compile-time format string processing. For example + + ```c++ + struct Answer {}; + + namespace fmt { + template <> + struct formatter { + constexpr auto parse(parse_context& ctx) { + auto it = ctx.begin(); + spec = *it; + if (spec != 'd' && spec != 's') + throw format_error("invalid specifier"); + return ++it; + } + + template + auto format(Answer, FormatContext& ctx) { + return spec == 's' ? + format_to(ctx.begin(), "{}", "fourty-two") : + format_to(ctx.begin(), "{}", 42); + } + + char spec = 0; + }; + } + + std::string s = format(fmt("{:x}"), Answer()); + ``` + + gives a compile-time error due to invalid format specifier + ([godbolt](https://godbolt.org/g/2jQ1Dv)): + + ... + :12:45: error: expression '' is not a constant expression + throw format_error("invalid specifier"); + +- Added [iterator + support](https://fmt.dev/latest/api.html#output-iterator-support): + + ```c++ + #include + #include + + std::vector out; + fmt::format_to(std::back_inserter(out), "{}", 42); + ``` + +- Added the + [format_to_n](https://fmt.dev/latest/api.html#_CPPv2N3fmt11format_to_nE8OutputItNSt6size_tE11string_viewDpRK4Args) + function that restricts the output to the specified number of + characters (https://github.com/fmtlib/fmt/issues/298): + + ```c++ + char out[4]; + fmt::format_to_n(out, sizeof(out), "{}", 12345); + // out == "1234" (without terminating '\0') + ``` + +- Added the [formatted_size]( + https://fmt.dev/latest/api.html#_CPPv2N3fmt14formatted_sizeE11string_viewDpRK4Args) + function for computing the output size: + + ```c++ + #include + + auto size = fmt::formatted_size("{}", 12345); // size == 5 + ``` + +- Improved compile times by reducing dependencies on standard headers + and providing a lightweight [core + API](https://fmt.dev/latest/api.html#core-api): + + ```c++ + #include + + fmt::print("The answer is {}.", 42); + ``` + + See [Compile time and code + bloat](https://github.com/fmtlib/fmt#compile-time-and-code-bloat). + +- Added the [make_format_args]( + https://fmt.dev/latest/api.html#_CPPv2N3fmt16make_format_argsEDpRK4Args) + function for capturing formatting arguments: + + ```c++ + // Prints formatted error message. + void vreport_error(const char *format, fmt::format_args args) { + fmt::print("Error: "); + fmt::vprint(format, args); + } + template + void report_error(const char *format, const Args & ... args) { + vreport_error(format, fmt::make_format_args(args...)); + } + ``` + +- Added the `make_printf_args` function for capturing `printf` + arguments (https://github.com/fmtlib/fmt/issues/687, + https://github.com/fmtlib/fmt/pull/694). Thanks @Kronuz. + +- Added prefix `v` to non-variadic functions taking `format_args` to + distinguish them from variadic ones: + + ```c++ + std::string vformat(string_view format_str, format_args args); + + template + std::string format(string_view format_str, const Args & ... args); + ``` + +- Added experimental support for formatting ranges, containers and + tuple-like types in `fmt/ranges.h` + (https://github.com/fmtlib/fmt/pull/735): + + ```c++ + #include + + std::vector v = {1, 2, 3}; + fmt::print("{}", v); // prints {1, 2, 3} + ``` + + Thanks @Remotion. + +- Implemented `wchar_t` date and time formatting + (https://github.com/fmtlib/fmt/pull/712): + + ```c++ + #include + + std::time_t t = std::time(nullptr); + auto s = fmt::format(L"The date is {:%Y-%m-%d}.", *std::localtime(&t)); + ``` + + Thanks @DanielaE. + +- Provided more wide string overloads + (https://github.com/fmtlib/fmt/pull/724). Thanks @DanielaE. + +- Switched from a custom null-terminated string view class to + `string_view` in the format API and provided `fmt::string_view` + which implements a subset of `std::string_view` API for pre-C++17 + systems. + +- Added support for `std::experimental::string_view` + (https://github.com/fmtlib/fmt/pull/607): + + ```c++ + #include + #include + + fmt::print("{}", std::experimental::string_view("foo")); + ``` + + Thanks @virgiliofornazin. + +- Allowed mixing named and automatic arguments: + + ```c++ + fmt::format("{} {two}", 1, fmt::arg("two", 2)); + ``` + +- Removed the write API in favor of the [format + API](https://fmt.dev/latest/api.html#format-api) with compile-time + handling of format strings. + +- Disallowed formatting of multibyte strings into a wide character + target (https://github.com/fmtlib/fmt/pull/606). + +- Improved documentation + (https://github.com/fmtlib/fmt/pull/515, + https://github.com/fmtlib/fmt/issues/614, + https://github.com/fmtlib/fmt/pull/617, + https://github.com/fmtlib/fmt/pull/661, + https://github.com/fmtlib/fmt/pull/680). + Thanks @ibell, @mihaitodor and @johnthagen. + +- Implemented more efficient handling of large number of format + arguments. + +- Introduced an inline namespace for symbol versioning. + +- Added debug postfix `d` to the `fmt` library name + (https://github.com/fmtlib/fmt/issues/636). + +- Removed unnecessary `fmt/` prefix in includes + (https://github.com/fmtlib/fmt/pull/397). Thanks @chronoxor. + +- Moved `fmt/*.h` to `include/fmt/*.h` to prevent irrelevant files and + directories appearing on the include search paths when fmt is used + as a subproject and moved source files to the `src` directory. + +- Added qmake project file `support/fmt.pro` + (https://github.com/fmtlib/fmt/pull/641). Thanks @cowo78. + +- Added Gradle build file `support/build.gradle` + (https://github.com/fmtlib/fmt/pull/649). Thanks @luncliff. + +- Removed `FMT_CPPFORMAT` CMake option. + +- Fixed a name conflict with the macro `CHAR_WIDTH` in glibc + (https://github.com/fmtlib/fmt/pull/616). Thanks @aroig. + +- Fixed handling of nested braces in `fmt::join` + (https://github.com/fmtlib/fmt/issues/638). + +- Added `SOURCELINK_SUFFIX` for compatibility with Sphinx 1.5 + (https://github.com/fmtlib/fmt/pull/497). Thanks @ginggs. + +- Added a missing `inline` in the header-only mode + (https://github.com/fmtlib/fmt/pull/626). Thanks @aroig. + +- Fixed various compiler warnings + (https://github.com/fmtlib/fmt/pull/640, + https://github.com/fmtlib/fmt/pull/656, + https://github.com/fmtlib/fmt/pull/679, + https://github.com/fmtlib/fmt/pull/681, + https://github.com/fmtlib/fmt/pull/705, + https://github.com/fmtlib/fmt/issues/715, + https://github.com/fmtlib/fmt/pull/717, + https://github.com/fmtlib/fmt/pull/720, + https://github.com/fmtlib/fmt/pull/723, + https://github.com/fmtlib/fmt/pull/726, + https://github.com/fmtlib/fmt/pull/730, + https://github.com/fmtlib/fmt/pull/739). + Thanks @peterbell10, @LarsGullik, @foonathan, @eliaskosunen, + @christianparpart, @DanielaE and @mwinterb. + +- Worked around an MSVC bug and fixed several warnings + (https://github.com/fmtlib/fmt/pull/653). Thanks @alabuzhev. + +- Worked around GCC bug 67371 + (https://github.com/fmtlib/fmt/issues/682). + +- Fixed compilation with `-fno-exceptions` + (https://github.com/fmtlib/fmt/pull/655). Thanks @chenxiaolong. + +- Made `constexpr remove_prefix` gcc version check tighter + (https://github.com/fmtlib/fmt/issues/648). + +- Renamed internal type enum constants to prevent collision with + poorly written C libraries + (https://github.com/fmtlib/fmt/issues/644). + +- Added detection of `wostream operator<<` + (https://github.com/fmtlib/fmt/issues/650). + +- Fixed compilation on OpenBSD + (https://github.com/fmtlib/fmt/pull/660). Thanks @hubslave. + +- Fixed compilation on FreeBSD 12 + (https://github.com/fmtlib/fmt/pull/732). Thanks @dankm. + +- Fixed compilation when there is a mismatch between `-std` options + between the library and user code + (https://github.com/fmtlib/fmt/issues/664). + +- Fixed compilation with GCC 7 and `-std=c++11` + (https://github.com/fmtlib/fmt/issues/734). + +- Improved generated binary code on GCC 7 and older + (https://github.com/fmtlib/fmt/issues/668). + +- Fixed handling of numeric alignment with no width + (https://github.com/fmtlib/fmt/issues/675). + +- Fixed handling of empty strings in UTF8/16 converters + (https://github.com/fmtlib/fmt/pull/676). Thanks @vgalka-sl. + +- Fixed formatting of an empty `string_view` + (https://github.com/fmtlib/fmt/issues/689). + +- Fixed detection of `string_view` on libc++ + (https://github.com/fmtlib/fmt/issues/686). + +- Fixed DLL issues (https://github.com/fmtlib/fmt/pull/696). + Thanks @sebkoenig. + +- Fixed compile checks for mixing narrow and wide strings + (https://github.com/fmtlib/fmt/issues/690). + +- Disabled unsafe implicit conversion to `std::string` + (https://github.com/fmtlib/fmt/issues/729). + +- Fixed handling of reused format specs (as in `fmt::join`) for + pointers (https://github.com/fmtlib/fmt/pull/725). Thanks @mwinterb. + +- Fixed installation of `fmt/ranges.h` + (https://github.com/fmtlib/fmt/pull/738). Thanks @sv1990. + +# 4.1.0 - 2017-12-20 + +- Added `fmt::to_wstring()` in addition to `fmt::to_string()` + (https://github.com/fmtlib/fmt/pull/559). Thanks @alabuzhev. +- Added support for C++17 `std::string_view` + (https://github.com/fmtlib/fmt/pull/571 and + https://github.com/fmtlib/fmt/pull/578). + Thanks @thelostt and @mwinterb. +- Enabled stream exceptions to catch errors + (https://github.com/fmtlib/fmt/issues/581). Thanks @crusader-mike. +- Allowed formatting of class hierarchies with `fmt::format_arg()` + (https://github.com/fmtlib/fmt/pull/547). Thanks @rollbear. +- Removed limitations on character types + (https://github.com/fmtlib/fmt/pull/563). Thanks @Yelnats321. +- Conditionally enabled use of `std::allocator_traits` + (https://github.com/fmtlib/fmt/pull/583). Thanks @mwinterb. +- Added support for `const` variadic member function emulation with + `FMT_VARIADIC_CONST` + (https://github.com/fmtlib/fmt/pull/591). Thanks @ludekvodicka. +- Various bugfixes: bad overflow check, unsupported implicit type + conversion when determining formatting function, test segfaults + (https://github.com/fmtlib/fmt/issues/551), ill-formed + macros (https://github.com/fmtlib/fmt/pull/542) and + ambiguous overloads + (https://github.com/fmtlib/fmt/issues/580). Thanks @xylosper. +- Prevented warnings on MSVC + (https://github.com/fmtlib/fmt/pull/605, + https://github.com/fmtlib/fmt/pull/602, and + https://github.com/fmtlib/fmt/pull/545), clang + (https://github.com/fmtlib/fmt/pull/582), GCC + (https://github.com/fmtlib/fmt/issues/573), various + conversion warnings (https://github.com/fmtlib/fmt/pull/609, + https://github.com/fmtlib/fmt/pull/567, + https://github.com/fmtlib/fmt/pull/553 and + https://github.com/fmtlib/fmt/pull/553), and added + `override` and `[[noreturn]]` + (https://github.com/fmtlib/fmt/pull/549 and + https://github.com/fmtlib/fmt/issues/555). + Thanks @alabuzhev, @virgiliofornazin, @alexanderbock, @yumetodo, @VaderY, + @jpcima, @thelostt and @Manu343726. +- Improved CMake: Used `GNUInstallDirs` to set installation location + (https://github.com/fmtlib/fmt/pull/610) and fixed warnings + (https://github.com/fmtlib/fmt/pull/536 and + https://github.com/fmtlib/fmt/pull/556). + Thanks @mikecrowe, @evgen231 and @henryiii. + +# 4.0.0 - 2017-06-27 + +- Removed old compatibility headers `cppformat/*.h` and CMake options + (https://github.com/fmtlib/fmt/pull/527). Thanks @maddinat0r. + +- Added `string.h` containing `fmt::to_string()` as alternative to + `std::to_string()` as well as other string writer functionality + (https://github.com/fmtlib/fmt/issues/326 and + https://github.com/fmtlib/fmt/pull/441): + + ```c++ + #include "fmt/string.h" + + std::string answer = fmt::to_string(42); + ``` + + Thanks @glebov-andrey. + +- Moved `fmt::printf()` to new `printf.h` header and allowed `%s` as + generic specifier (https://github.com/fmtlib/fmt/pull/453), + made `%.f` more conformant to regular `printf()` + (https://github.com/fmtlib/fmt/pull/490), added custom + writer support (https://github.com/fmtlib/fmt/issues/476) + and implemented missing custom argument formatting + (https://github.com/fmtlib/fmt/pull/339 and + https://github.com/fmtlib/fmt/pull/340): + + ```c++ + #include "fmt/printf.h" + + // %s format specifier can be used with any argument type. + fmt::printf("%s", 42); + ``` + + Thanks @mojoBrendan, @manylegged and @spacemoose. + See also https://github.com/fmtlib/fmt/issues/360, + https://github.com/fmtlib/fmt/issues/335 and + https://github.com/fmtlib/fmt/issues/331. + +- Added `container.h` containing a `BasicContainerWriter` to write to + containers like `std::vector` + (https://github.com/fmtlib/fmt/pull/450). Thanks @polyvertex. + +- Added `fmt::join()` function that takes a range and formats its + elements separated by a given string + (https://github.com/fmtlib/fmt/pull/466): + + ```c++ + #include "fmt/format.h" + + std::vector v = {1.2, 3.4, 5.6}; + // Prints "(+01.20, +03.40, +05.60)". + fmt::print("({:+06.2f})", fmt::join(v.begin(), v.end(), ", ")); + ``` + + Thanks @olivier80. + +- Added support for custom formatting specifications to simplify + customization of built-in formatting + (https://github.com/fmtlib/fmt/pull/444). Thanks @polyvertex. + See also https://github.com/fmtlib/fmt/issues/439. + +- Added `fmt::format_system_error()` for error code formatting + (https://github.com/fmtlib/fmt/issues/323 and + https://github.com/fmtlib/fmt/pull/526). Thanks @maddinat0r. + +- Added thread-safe `fmt::localtime()` and `fmt::gmtime()` as + replacement for the standard version to `time.h` + (https://github.com/fmtlib/fmt/pull/396). Thanks @codicodi. + +- Internal improvements to `NamedArg` and `ArgLists` + (https://github.com/fmtlib/fmt/pull/389 and + https://github.com/fmtlib/fmt/pull/390). Thanks @chronoxor. + +- Fixed crash due to bug in `FormatBuf` + (https://github.com/fmtlib/fmt/pull/493). Thanks @effzeh. See also + https://github.com/fmtlib/fmt/issues/480 and + https://github.com/fmtlib/fmt/issues/491. + +- Fixed handling of wide strings in `fmt::StringWriter`. + +- Improved compiler error messages + (https://github.com/fmtlib/fmt/issues/357). + +- Fixed various warnings and issues with various compilers + (https://github.com/fmtlib/fmt/pull/494, + https://github.com/fmtlib/fmt/pull/499, + https://github.com/fmtlib/fmt/pull/483, + https://github.com/fmtlib/fmt/pull/485, + https://github.com/fmtlib/fmt/pull/482, + https://github.com/fmtlib/fmt/pull/475, + https://github.com/fmtlib/fmt/pull/473 and + https://github.com/fmtlib/fmt/pull/414). + Thanks @chronoxor, @zhaohuaxishi, @pkestene, @dschmidt and @0x414c. + +- Improved CMake: targets are now namespaced + (https://github.com/fmtlib/fmt/pull/511 and + https://github.com/fmtlib/fmt/pull/513), supported + header-only `printf.h` + (https://github.com/fmtlib/fmt/pull/354), fixed issue with + minimal supported library subset + (https://github.com/fmtlib/fmt/issues/418, + https://github.com/fmtlib/fmt/pull/419 and + https://github.com/fmtlib/fmt/pull/420). + Thanks @bjoernthiel, @niosHD, @LogicalKnight and @alabuzhev. + +- Improved documentation (https://github.com/fmtlib/fmt/pull/393). + Thanks @pwm1234. + +# 3.0.2 - 2017-06-14 + +- Added `FMT_VERSION` macro + (https://github.com/fmtlib/fmt/issues/411). +- Used `FMT_NULL` instead of literal `0` + (https://github.com/fmtlib/fmt/pull/409). Thanks @alabuzhev. +- Added extern templates for `format_float` + (https://github.com/fmtlib/fmt/issues/413). +- Fixed implicit conversion issue + (https://github.com/fmtlib/fmt/issues/507). +- Fixed signbit detection + (https://github.com/fmtlib/fmt/issues/423). +- Fixed naming collision + (https://github.com/fmtlib/fmt/issues/425). +- Fixed missing intrinsic for C++/CLI + (https://github.com/fmtlib/fmt/pull/457). Thanks @calumr. +- Fixed Android detection + (https://github.com/fmtlib/fmt/pull/458). Thanks @Gachapen. +- Use lean `windows.h` if not in header-only mode + (https://github.com/fmtlib/fmt/pull/503). Thanks @Quentin01. +- Fixed issue with CMake exporting C++11 flag + (https://github.com/fmtlib/fmt/pull/455). Thanks @EricWF. +- Fixed issue with nvcc and MSVC compiler bug and MinGW + (https://github.com/fmtlib/fmt/issues/505). +- Fixed DLL issues (https://github.com/fmtlib/fmt/pull/469 and + https://github.com/fmtlib/fmt/pull/502). + Thanks @richardeakin and @AndreasSchoenle. +- Fixed test compilation under FreeBSD + (https://github.com/fmtlib/fmt/issues/433). +- Fixed various warnings + (https://github.com/fmtlib/fmt/pull/403, + https://github.com/fmtlib/fmt/pull/410 and + https://github.com/fmtlib/fmt/pull/510). + Thanks @Lecetem, @chenhayat and @trozen. +- Worked around a broken `__builtin_clz` in clang with MS codegen + (https://github.com/fmtlib/fmt/issues/519). +- Removed redundant include + (https://github.com/fmtlib/fmt/issues/479). +- Fixed documentation issues. + +# 3.0.1 - 2016-11-01 + +- Fixed handling of thousands separator + (https://github.com/fmtlib/fmt/issues/353). +- Fixed handling of `unsigned char` strings + (https://github.com/fmtlib/fmt/issues/373). +- Corrected buffer growth when formatting time + (https://github.com/fmtlib/fmt/issues/367). +- Removed warnings under MSVC and clang + (https://github.com/fmtlib/fmt/issues/318, + https://github.com/fmtlib/fmt/issues/250, also merged + https://github.com/fmtlib/fmt/pull/385 and + https://github.com/fmtlib/fmt/pull/361). + Thanks @jcelerier and @nmoehrle. +- Fixed compilation issues under Android + (https://github.com/fmtlib/fmt/pull/327, + https://github.com/fmtlib/fmt/issues/345 and + https://github.com/fmtlib/fmt/pull/381), FreeBSD + (https://github.com/fmtlib/fmt/pull/358), Cygwin + (https://github.com/fmtlib/fmt/issues/388), MinGW + (https://github.com/fmtlib/fmt/issues/355) as well as other + issues (https://github.com/fmtlib/fmt/issues/350, + https://github.com/fmtlib/fmt/issues/355, + https://github.com/fmtlib/fmt/pull/348, + https://github.com/fmtlib/fmt/pull/402, + https://github.com/fmtlib/fmt/pull/405). + Thanks @dpantele, @hghwng, @arvedarved, @LogicalKnight and @JanHellwig. +- Fixed some documentation issues and extended specification + (https://github.com/fmtlib/fmt/issues/320, + https://github.com/fmtlib/fmt/pull/333, + https://github.com/fmtlib/fmt/issues/347, + https://github.com/fmtlib/fmt/pull/362). Thanks @smellman. + +# 3.0.0 - 2016-05-07 + +- The project has been renamed from C++ Format (cppformat) to fmt for + consistency with the used namespace and macro prefix + (https://github.com/fmtlib/fmt/issues/307). Library headers + are now located in the `fmt` directory: + + ```c++ + #include "fmt/format.h" + ``` + + Including `format.h` from the `cppformat` directory is deprecated + but works via a proxy header which will be removed in the next major + version. + + The documentation is now available at . + +- Added support for + [strftime](http://en.cppreference.com/w/cpp/chrono/c/strftime)-like + [date and time + formatting](https://fmt.dev/3.0.0/api.html#date-and-time-formatting) + (https://github.com/fmtlib/fmt/issues/283): + + ```c++ + #include "fmt/time.h" + + std::time_t t = std::time(nullptr); + // Prints "The date is 2016-04-29." (with the current date) + fmt::print("The date is {:%Y-%m-%d}.", *std::localtime(&t)); + ``` + +- `std::ostream` support including formatting of user-defined types + that provide overloaded `operator<<` has been moved to + `fmt/ostream.h`: + + ```c++ + #include "fmt/ostream.h" + + class Date { + int year_, month_, day_; + public: + Date(int year, int month, int day) : year_(year), month_(month), day_(day) {} + + friend std::ostream &operator<<(std::ostream &os, const Date &d) { + return os << d.year_ << '-' << d.month_ << '-' << d.day_; + } + }; + + std::string s = fmt::format("The date is {}", Date(2012, 12, 9)); + // s == "The date is 2012-12-9" + ``` + +- Added support for [custom argument + formatters](https://fmt.dev/3.0.0/api.html#argument-formatters) + (https://github.com/fmtlib/fmt/issues/235). + +- Added support for locale-specific integer formatting with the `n` + specifier (https://github.com/fmtlib/fmt/issues/305): + + ```c++ + std::setlocale(LC_ALL, "en_US.utf8"); + fmt::print("cppformat: {:n}\n", 1234567); // prints 1,234,567 + ``` + +- Sign is now preserved when formatting an integer with an incorrect + `printf` format specifier + (https://github.com/fmtlib/fmt/issues/265): + + ```c++ + fmt::printf("%lld", -42); // prints -42 + ``` + + Note that it would be an undefined behavior in `std::printf`. + +- Length modifiers such as `ll` are now optional in printf formatting + functions and the correct type is determined automatically + (https://github.com/fmtlib/fmt/issues/255): + + ```c++ + fmt::printf("%d", std::numeric_limits::max()); + ``` + + Note that it would be an undefined behavior in `std::printf`. + +- Added initial support for custom formatters + (https://github.com/fmtlib/fmt/issues/231). + +- Fixed detection of user-defined literal support on Intel C++ + compiler (https://github.com/fmtlib/fmt/issues/311, + https://github.com/fmtlib/fmt/pull/312). + Thanks @dean0x7d and @speth. + +- Reduced compile time + (https://github.com/fmtlib/fmt/pull/243, + https://github.com/fmtlib/fmt/pull/249, + https://github.com/fmtlib/fmt/issues/317): + + ![](https://cloud.githubusercontent.com/assets/4831417/11614060/b9e826d2-9c36-11e5-8666-d4131bf503ef.png) + + ![](https://cloud.githubusercontent.com/assets/4831417/11614080/6ac903cc-9c37-11e5-8165-26df6efae364.png) + + Thanks @dean0x7d. + +- Compile test fixes (https://github.com/fmtlib/fmt/pull/313). + Thanks @dean0x7d. + +- Documentation fixes (https://github.com/fmtlib/fmt/pull/239, + https://github.com/fmtlib/fmt/issues/248, + https://github.com/fmtlib/fmt/issues/252, + https://github.com/fmtlib/fmt/pull/258, + https://github.com/fmtlib/fmt/issues/260, + https://github.com/fmtlib/fmt/issues/301, + https://github.com/fmtlib/fmt/pull/309). + Thanks @ReadmeCritic @Gachapen and @jwilk. + +- Fixed compiler and sanitizer warnings + (https://github.com/fmtlib/fmt/issues/244, + https://github.com/fmtlib/fmt/pull/256, + https://github.com/fmtlib/fmt/pull/259, + https://github.com/fmtlib/fmt/issues/263, + https://github.com/fmtlib/fmt/issues/274, + https://github.com/fmtlib/fmt/pull/277, + https://github.com/fmtlib/fmt/pull/286, + https://github.com/fmtlib/fmt/issues/291, + https://github.com/fmtlib/fmt/issues/296, + https://github.com/fmtlib/fmt/issues/308). + Thanks @mwinterb, @pweiskircher and @Naios. + +- Improved compatibility with Windows Store apps + (https://github.com/fmtlib/fmt/issues/280, + https://github.com/fmtlib/fmt/pull/285) Thanks @mwinterb. + +- Added tests of compatibility with older C++ standards + (https://github.com/fmtlib/fmt/pull/273). Thanks @niosHD. + +- Fixed Android build + (https://github.com/fmtlib/fmt/pull/271). Thanks @newnon. + +- Changed `ArgMap` to be backed by a vector instead of a map. + (https://github.com/fmtlib/fmt/issues/261, + https://github.com/fmtlib/fmt/pull/262). Thanks @mwinterb. + +- Added `fprintf` overload that writes to a `std::ostream` + (https://github.com/fmtlib/fmt/pull/251). + Thanks @nickhutchinson. + +- Export symbols when building a Windows DLL + (https://github.com/fmtlib/fmt/pull/245). + Thanks @macdems. + +- Fixed compilation on Cygwin + (https://github.com/fmtlib/fmt/issues/304). + +- Implemented a workaround for a bug in Apple LLVM version 4.2 of + clang (https://github.com/fmtlib/fmt/issues/276). + +- Implemented a workaround for Google Test bug + https://github.com/google/googletest/issues/705 on gcc 6 + (https://github.com/fmtlib/fmt/issues/268). Thanks @octoploid. + +- Removed Biicode support because the latter has been discontinued. + +# 2.1.1 - 2016-04-11 + +- The install location for generated CMake files is now configurable + via the `FMT_CMAKE_DIR` CMake variable + (https://github.com/fmtlib/fmt/pull/299). Thanks @niosHD. +- Documentation fixes + (https://github.com/fmtlib/fmt/issues/252). + +# 2.1.0 - 2016-03-21 + +- Project layout and build system improvements + (https://github.com/fmtlib/fmt/pull/267): + + - The code have been moved to the `cppformat` directory. Including + `format.h` from the top-level directory is deprecated but works + via a proxy header which will be removed in the next major + version. + - C++ Format CMake targets now have proper interface definitions. + - Installed version of the library now supports the header-only + configuration. + - Targets `doc`, `install`, and `test` are now disabled if C++ + Format is included as a CMake subproject. They can be enabled by + setting `FMT_DOC`, `FMT_INSTALL`, and `FMT_TEST` in the parent + project. + + Thanks @niosHD. + +# 2.0.1 - 2016-03-13 + +- Improved CMake find and package support + (https://github.com/fmtlib/fmt/issues/264). Thanks @niosHD. +- Fix compile error with Android NDK and mingw32 + (https://github.com/fmtlib/fmt/issues/241). Thanks @Gachapen. +- Documentation fixes + (https://github.com/fmtlib/fmt/issues/248, + https://github.com/fmtlib/fmt/issues/260). + +# 2.0.0 - 2015-12-01 + +## General + +- \[Breaking\] Named arguments + (https://github.com/fmtlib/fmt/pull/169, + https://github.com/fmtlib/fmt/pull/173, + https://github.com/fmtlib/fmt/pull/174): + + ```c++ + fmt::print("The answer is {answer}.", fmt::arg("answer", 42)); + ``` + + Thanks @jamboree. + +- \[Experimental\] User-defined literals for format and named + arguments (https://github.com/fmtlib/fmt/pull/204, + https://github.com/fmtlib/fmt/pull/206, + https://github.com/fmtlib/fmt/pull/207): + + ```c++ + using namespace fmt::literals; + fmt::print("The answer is {answer}.", "answer"_a=42); + ``` + + Thanks @dean0x7d. + +- \[Breaking\] Formatting of more than 16 arguments is now supported + when using variadic templates + (https://github.com/fmtlib/fmt/issues/141). Thanks @Shauren. + +- Runtime width specification + (https://github.com/fmtlib/fmt/pull/168): + + ```c++ + fmt::format("{0:{1}}", 42, 5); // gives " 42" + ``` + + Thanks @jamboree. + +- \[Breaking\] Enums are now formatted with an overloaded + `std::ostream` insertion operator (`operator<<`) if available + (https://github.com/fmtlib/fmt/issues/232). + +- \[Breaking\] Changed default `bool` format to textual, \"true\" or + \"false\" (https://github.com/fmtlib/fmt/issues/170): + + ```c++ + fmt::print("{}", true); // prints "true" + ``` + + To print `bool` as a number use numeric format specifier such as + `d`: + + ```c++ + fmt::print("{:d}", true); // prints "1" + ``` + +- `fmt::printf` and `fmt::sprintf` now support formatting of `bool` + with the `%s` specifier giving textual output, \"true\" or \"false\" + (https://github.com/fmtlib/fmt/pull/223): + + ```c++ + fmt::printf("%s", true); // prints "true" + ``` + + Thanks @LarsGullik. + +- \[Breaking\] `signed char` and `unsigned char` are now formatted as + integers by default + (https://github.com/fmtlib/fmt/pull/217). + +- \[Breaking\] Pointers to C strings can now be formatted with the `p` + specifier (https://github.com/fmtlib/fmt/pull/223): + + ```c++ + fmt::print("{:p}", "test"); // prints pointer value + ``` + + Thanks @LarsGullik. + +- \[Breaking\] `fmt::printf` and `fmt::sprintf` now print null + pointers as `(nil)` and null strings as `(null)` for consistency + with glibc (https://github.com/fmtlib/fmt/pull/226). + Thanks @LarsGullik. + +- \[Breaking\] `fmt::(s)printf` now supports formatting of objects of + user-defined types that provide an overloaded `std::ostream` + insertion operator (`operator<<`) + (https://github.com/fmtlib/fmt/issues/201): + + ```c++ + fmt::printf("The date is %s", Date(2012, 12, 9)); + ``` + +- \[Breaking\] The `Buffer` template is now part of the public API and + can be used to implement custom memory buffers + (https://github.com/fmtlib/fmt/issues/140). Thanks @polyvertex. + +- \[Breaking\] Improved compatibility between `BasicStringRef` and + [std::experimental::basic_string_view]( + http://en.cppreference.com/w/cpp/experimental/basic_string_view) + (https://github.com/fmtlib/fmt/issues/100, + https://github.com/fmtlib/fmt/issues/159, + https://github.com/fmtlib/fmt/issues/183): + + - Comparison operators now compare string content, not pointers + - `BasicStringRef::c_str` replaced by `BasicStringRef::data` + - `BasicStringRef` is no longer assumed to be null-terminated + + References to null-terminated strings are now represented by a new + class, `BasicCStringRef`. + +- Dependency on pthreads introduced by Google Test is now optional + (https://github.com/fmtlib/fmt/issues/185). + +- New CMake options `FMT_DOC`, `FMT_INSTALL` and `FMT_TEST` to control + generation of `doc`, `install` and `test` targets respectively, on + by default (https://github.com/fmtlib/fmt/issues/197, + https://github.com/fmtlib/fmt/issues/198, + https://github.com/fmtlib/fmt/issues/200). Thanks @maddinat0r. + +- `noexcept` is now used when compiling with MSVC2015 + (https://github.com/fmtlib/fmt/pull/215). Thanks @dmkrepo. + +- Added an option to disable use of `windows.h` when + `FMT_USE_WINDOWS_H` is defined as 0 before including `format.h` + (https://github.com/fmtlib/fmt/issues/171). Thanks @alfps. + +- \[Breaking\] `windows.h` is now included with `NOMINMAX` unless + `FMT_WIN_MINMAX` is defined. This is done to prevent breaking code + using `std::min` and `std::max` and only affects the header-only + configuration (https://github.com/fmtlib/fmt/issues/152, + https://github.com/fmtlib/fmt/pull/153, + https://github.com/fmtlib/fmt/pull/154). Thanks @DevO2012. + +- Improved support for custom character types + (https://github.com/fmtlib/fmt/issues/171). Thanks @alfps. + +- Added an option to disable use of IOStreams when `FMT_USE_IOSTREAMS` + is defined as 0 before including `format.h` + (https://github.com/fmtlib/fmt/issues/205, + https://github.com/fmtlib/fmt/pull/208). Thanks @JodiTheTigger. + +- Improved detection of `isnan`, `isinf` and `signbit`. + +## Optimization + +- Made formatting of user-defined types more efficient with a custom + stream buffer (https://github.com/fmtlib/fmt/issues/92, + https://github.com/fmtlib/fmt/pull/230). Thanks @NotImplemented. +- Further improved performance of `fmt::Writer` on integer formatting + and fixed a minor regression. Now it is \~7% faster than + `karma::generate` on Karma\'s benchmark + (https://github.com/fmtlib/fmt/issues/186). +- \[Breaking\] Reduced [compiled code + size](https://github.com/fmtlib/fmt#compile-time-and-code-bloat) + (https://github.com/fmtlib/fmt/issues/143, + https://github.com/fmtlib/fmt/pull/149). + +## Distribution + +- \[Breaking\] Headers are now installed in + `${CMAKE_INSTALL_PREFIX}/include/cppformat` + (https://github.com/fmtlib/fmt/issues/178). Thanks @jackyf. + +- \[Breaking\] Changed the library name from `format` to `cppformat` + for consistency with the project name and to avoid potential + conflicts (https://github.com/fmtlib/fmt/issues/178). + Thanks @jackyf. + +- C++ Format is now available in [Debian](https://www.debian.org/) + GNU/Linux + ([stretch](https://packages.debian.org/source/stretch/cppformat), + [sid](https://packages.debian.org/source/sid/cppformat)) and derived + distributions such as + [Ubuntu](https://launchpad.net/ubuntu/+source/cppformat) 15.10 and + later (https://github.com/fmtlib/fmt/issues/155): + + $ sudo apt-get install libcppformat1-dev + + Thanks @jackyf. + +- [Packages for Fedora and + RHEL](https://admin.fedoraproject.org/pkgdb/package/cppformat/) are + now available. Thanks Dave Johansen. + +- C++ Format can now be installed via [Homebrew](http://brew.sh/) on + OS X (https://github.com/fmtlib/fmt/issues/157): + + $ brew install cppformat + + Thanks @ortho and Anatoliy Bulukin. + +## Documentation + +- Migrated from ReadTheDocs to GitHub Pages for better responsiveness + and reliability (https://github.com/fmtlib/fmt/issues/128). + New documentation address is . +- Added [Building thedocumentation]( + https://fmt.dev/2.0.0/usage.html#building-the-documentation) + section to the documentation. +- Documentation build script is now compatible with Python 3 and newer + pip versions. (https://github.com/fmtlib/fmt/pull/189, + https://github.com/fmtlib/fmt/issues/209). + Thanks @JodiTheTigger and @xentec. +- Documentation fixes and improvements + (https://github.com/fmtlib/fmt/issues/36, + https://github.com/fmtlib/fmt/issues/75, + https://github.com/fmtlib/fmt/issues/125, + https://github.com/fmtlib/fmt/pull/160, + https://github.com/fmtlib/fmt/pull/161, + https://github.com/fmtlib/fmt/issues/162, + https://github.com/fmtlib/fmt/issues/165, + https://github.com/fmtlib/fmt/issues/210). + Thanks @syohex. +- Fixed out-of-tree documentation build + (https://github.com/fmtlib/fmt/issues/177). Thanks @jackyf. + +## Fixes + +- Fixed `initializer_list` detection + (https://github.com/fmtlib/fmt/issues/136). Thanks @Gachapen. + +- \[Breaking\] Fixed formatting of enums with numeric format + specifiers in `fmt::(s)printf` + (https://github.com/fmtlib/fmt/issues/131, + https://github.com/fmtlib/fmt/issues/139): + + ```c++ + enum { ANSWER = 42 }; + fmt::printf("%d", ANSWER); + ``` + + Thanks @Naios. + +- Improved compatibility with old versions of MinGW + (https://github.com/fmtlib/fmt/issues/129, + https://github.com/fmtlib/fmt/pull/130, + https://github.com/fmtlib/fmt/issues/132). Thanks @cstamford. + +- Fixed a compile error on MSVC with disabled exceptions + (https://github.com/fmtlib/fmt/issues/144). + +- Added a workaround for broken implementation of variadic templates + in MSVC2012 (https://github.com/fmtlib/fmt/issues/148). + +- Placed the anonymous namespace within `fmt` namespace for the + header-only configuration (https://github.com/fmtlib/fmt/issues/171). + Thanks @alfps. + +- Fixed issues reported by Coverity Scan + (https://github.com/fmtlib/fmt/issues/187, + https://github.com/fmtlib/fmt/issues/192). + +- Implemented a workaround for a name lookup bug in MSVC2010 + (https://github.com/fmtlib/fmt/issues/188). + +- Fixed compiler warnings + (https://github.com/fmtlib/fmt/issues/95, + https://github.com/fmtlib/fmt/issues/96, + https://github.com/fmtlib/fmt/pull/114, + https://github.com/fmtlib/fmt/issues/135, + https://github.com/fmtlib/fmt/issues/142, + https://github.com/fmtlib/fmt/issues/145, + https://github.com/fmtlib/fmt/issues/146, + https://github.com/fmtlib/fmt/issues/158, + https://github.com/fmtlib/fmt/issues/163, + https://github.com/fmtlib/fmt/issues/175, + https://github.com/fmtlib/fmt/issues/190, + https://github.com/fmtlib/fmt/pull/191, + https://github.com/fmtlib/fmt/issues/194, + https://github.com/fmtlib/fmt/pull/196, + https://github.com/fmtlib/fmt/issues/216, + https://github.com/fmtlib/fmt/pull/218, + https://github.com/fmtlib/fmt/pull/220, + https://github.com/fmtlib/fmt/pull/229, + https://github.com/fmtlib/fmt/issues/233, + https://github.com/fmtlib/fmt/issues/234, + https://github.com/fmtlib/fmt/pull/236, + https://github.com/fmtlib/fmt/issues/281, + https://github.com/fmtlib/fmt/issues/289). + Thanks @seanmiddleditch, @dixlorenz, @CarterLi, @Naios, @fmatthew5876, + @LevskiWeng, @rpopescu, @gabime, @cubicool, @jkflying, @LogicalKnight, + @inguin and @Jopie64. + +- Fixed portability issues (mostly causing test failures) on ARM, + ppc64, ppc64le, s390x and SunOS 5.11 i386 + (https://github.com/fmtlib/fmt/issues/138, + https://github.com/fmtlib/fmt/issues/179, + https://github.com/fmtlib/fmt/issues/180, + https://github.com/fmtlib/fmt/issues/202, + https://github.com/fmtlib/fmt/issues/225, [Red Hat Bugzilla + Bug 1260297](https://bugzilla.redhat.com/show_bug.cgi?id=1260297)). + Thanks @Naios, @jackyf and Dave Johansen. + +- Fixed a name conflict with macro `free` defined in `crtdbg.h` when + `_CRTDBG_MAP_ALLOC` is set (https://github.com/fmtlib/fmt/issues/211). + +- Fixed shared library build on OS X + (https://github.com/fmtlib/fmt/pull/212). Thanks @dean0x7d. + +- Fixed an overload conflict on MSVC when `/Zc:wchar_t-` option is + specified (https://github.com/fmtlib/fmt/pull/214). + Thanks @slavanap. + +- Improved compatibility with MSVC 2008 + (https://github.com/fmtlib/fmt/pull/236). Thanks @Jopie64. + +- Improved compatibility with bcc32 + (https://github.com/fmtlib/fmt/issues/227). + +- Fixed `static_assert` detection on Clang + (https://github.com/fmtlib/fmt/pull/228). Thanks @dean0x7d. + +# 1.1.0 - 2015-03-06 + +- Added `BasicArrayWriter`, a class template that provides operations + for formatting and writing data into a fixed-size array + (https://github.com/fmtlib/fmt/issues/105 and + https://github.com/fmtlib/fmt/issues/122): + + ```c++ + char buffer[100]; + fmt::ArrayWriter w(buffer); + w.write("The answer is {}", 42); + ``` + +- Added [0 A.D.](http://play0ad.com/) and [PenUltima Online + (POL)](http://www.polserver.com/) to the list of notable projects + using C++ Format. + +- C++ Format now uses MSVC intrinsics for better formatting performance + (https://github.com/fmtlib/fmt/pull/115, + https://github.com/fmtlib/fmt/pull/116, + https://github.com/fmtlib/fmt/pull/118 and + https://github.com/fmtlib/fmt/pull/121). Previously these + optimizations where only used on GCC and Clang. + Thanks @CarterLi and @objectx. + +- CMake install target + (https://github.com/fmtlib/fmt/pull/119). Thanks @TrentHouliston. + + You can now install C++ Format with `make install` command. + +- Improved [Biicode](http://www.biicode.com/) support + (https://github.com/fmtlib/fmt/pull/98 and + https://github.com/fmtlib/fmt/pull/104). + Thanks @MariadeAnton and @franramirez688. + +- Improved support for building with [Android NDK]( + https://developer.android.com/tools/sdk/ndk/index.html) + (https://github.com/fmtlib/fmt/pull/107). Thanks @newnon. + + The [android-ndk-example](https://github.com/fmtlib/android-ndk-example) + repository provides and example of using C++ Format with Android NDK: + + ![](https://raw.githubusercontent.com/fmtlib/android-ndk-example/master/screenshot.png) + +- Improved documentation of `SystemError` and `WindowsError` + (https://github.com/fmtlib/fmt/issues/54). + +- Various code improvements + (https://github.com/fmtlib/fmt/pull/110, + https://github.com/fmtlib/fmt/pull/111 + https://github.com/fmtlib/fmt/pull/112). Thanks @CarterLi. + +- Improved compile-time errors when formatting wide into narrow + strings (https://github.com/fmtlib/fmt/issues/117). + +- Fixed `BasicWriter::write` without formatting arguments when C++11 + support is disabled + (https://github.com/fmtlib/fmt/issues/109). + +- Fixed header-only build on OS X with GCC 4.9 + (https://github.com/fmtlib/fmt/issues/124). + +- Fixed packaging issues (https://github.com/fmtlib/fmt/issues/94). + +- Added [changelog](https://github.com/fmtlib/fmt/blob/master/ChangeLog.md) + (https://github.com/fmtlib/fmt/issues/103). + +# 1.0.0 - 2015-02-05 + +- Add support for a header-only configuration when `FMT_HEADER_ONLY` + is defined before including `format.h`: + + ```c++ + #define FMT_HEADER_ONLY + #include "format.h" + ``` + +- Compute string length in the constructor of `BasicStringRef` instead + of the `size` method + (https://github.com/fmtlib/fmt/issues/79). This eliminates + size computation for string literals on reasonable optimizing + compilers. + +- Fix formatting of types with overloaded `operator <<` for + `std::wostream` (https://github.com/fmtlib/fmt/issues/86): + + ```c++ + fmt::format(L"The date is {0}", Date(2012, 12, 9)); + ``` + +- Fix linkage of tests on Arch Linux + (https://github.com/fmtlib/fmt/issues/89). + +- Allow precision specifier for non-float arguments + (https://github.com/fmtlib/fmt/issues/90): + + ```c++ + fmt::print("{:.3}\n", "Carpet"); // prints "Car" + ``` + +- Fix build on Android NDK (https://github.com/fmtlib/fmt/issues/93). + +- Improvements to documentation build procedure. + +- Remove `FMT_SHARED` CMake variable in favor of standard [BUILD_SHARED_LIBS]( + http://www.cmake.org/cmake/help/v3.0/variable/BUILD_SHARED_LIBS.html). + +- Fix error handling in `fmt::fprintf`. + +- Fix a number of warnings. + +# 0.12.0 - 2014-10-25 + +- \[Breaking\] Improved separation between formatting and buffer + management. `Writer` is now a base class that cannot be instantiated + directly. The new `MemoryWriter` class implements the default buffer + management with small allocations done on stack. So `fmt::Writer` + should be replaced with `fmt::MemoryWriter` in variable + declarations. + + Old code: + + ```c++ + fmt::Writer w; + ``` + + New code: + + ```c++ + fmt::MemoryWriter w; + ``` + + If you pass `fmt::Writer` by reference, you can continue to do so: + + ```c++ + void f(fmt::Writer &w); + ``` + + This doesn\'t affect the formatting API. + +- Support for custom memory allocators + (https://github.com/fmtlib/fmt/issues/69) + +- Formatting functions now accept [signed char]{.title-ref} and + [unsigned char]{.title-ref} strings as arguments + (https://github.com/fmtlib/fmt/issues/73): + + ```c++ + auto s = format("GLSL version: {}", glGetString(GL_VERSION)); + ``` + +- Reduced code bloat. According to the new [benchmark + results](https://github.com/fmtlib/fmt#compile-time-and-code-bloat), + cppformat is close to `printf` and by the order of magnitude better + than Boost Format in terms of compiled code size. + +- Improved appearance of the documentation on mobile by using the + [Sphinx Bootstrap + theme](http://ryan-roemer.github.io/sphinx-bootstrap-theme/): + + | Old | New | + | --- | --- | + | ![](https://cloud.githubusercontent.com/assets/576385/4792130/cd256436-5de3-11e4-9a62-c077d0c2b003.png) | ![](https://cloud.githubusercontent.com/assets/576385/4792131/cd29896c-5de3-11e4-8f59-cac952942bf0.png) | + +# 0.11.0 - 2014-08-21 + +- Safe printf implementation with a POSIX extension for positional + arguments: + + ```c++ + fmt::printf("Elapsed time: %.2f seconds", 1.23); + fmt::printf("%1$s, %3$d %2$s", weekday, month, day); + ``` + +- Arguments of `char` type can now be formatted as integers (Issue + https://github.com/fmtlib/fmt/issues/55): + + ```c++ + fmt::format("0x{0:02X}", 'a'); + ``` + +- Deprecated parts of the API removed. + +- The library is now built and tested on MinGW with Appveyor in + addition to existing test platforms Linux/GCC, OS X/Clang, + Windows/MSVC. + +# 0.10.0 - 2014-07-01 + +**Improved API** + +- All formatting methods are now implemented as variadic functions + instead of using `operator<<` for feeding arbitrary arguments into a + temporary formatter object. This works both with C++11 where + variadic templates are used and with older standards where variadic + functions are emulated by providing lightweight wrapper functions + defined with the `FMT_VARIADIC` macro. You can use this macro for + defining your own portable variadic functions: + + ```c++ + void report_error(const char *format, const fmt::ArgList &args) { + fmt::print("Error: {}"); + fmt::print(format, args); + } + FMT_VARIADIC(void, report_error, const char *) + + report_error("file not found: {}", path); + ``` + + Apart from a more natural syntax, this also improves performance as + there is no need to construct temporary formatter objects and + control arguments\' lifetimes. Because the wrapper functions are + very lightweight, this doesn\'t cause code bloat even in pre-C++11 + mode. + +- Simplified common case of formatting an `std::string`. Now it + requires a single function call: + + ```c++ + std::string s = format("The answer is {}.", 42); + ``` + + Previously it required 2 function calls: + + ```c++ + std::string s = str(Format("The answer is {}.") << 42); + ``` + + Instead of unsafe `c_str` function, `fmt::Writer` should be used + directly to bypass creation of `std::string`: + + ```c++ + fmt::Writer w; + w.write("The answer is {}.", 42); + w.c_str(); // returns a C string + ``` + + This doesn\'t do dynamic memory allocation for small strings and is + less error prone as the lifetime of the string is the same as for + `std::string::c_str` which is well understood (hopefully). + +- Improved consistency in naming functions that are a part of the + public API. Now all public functions are lowercase following the + standard library conventions. Previously it was a combination of + lowercase and CapitalizedWords. Issue + https://github.com/fmtlib/fmt/issues/50. + +- Old functions are marked as deprecated and will be removed in the + next release. + +**Other Changes** + +- Experimental support for printf format specifications (work in + progress): + + ```c++ + fmt::printf("The answer is %d.", 42); + std::string s = fmt::sprintf("Look, a %s!", "string"); + ``` + +- Support for hexadecimal floating point format specifiers `a` and + `A`: + + ```c++ + print("{:a}", -42.0); // Prints -0x1.5p+5 + print("{:A}", -42.0); // Prints -0X1.5P+5 + ``` + +- CMake option `FMT_SHARED` that specifies whether to build format as + a shared library (off by default). + +# 0.9.0 - 2014-05-13 + +- More efficient implementation of variadic formatting functions. + +- `Writer::Format` now has a variadic overload: + + ```c++ + Writer out; + out.Format("Look, I'm {}!", "variadic"); + ``` + +- For efficiency and consistency with other overloads, variadic + overload of the `Format` function now returns `Writer` instead of + `std::string`. Use the `str` function to convert it to + `std::string`: + + ```c++ + std::string s = str(Format("Look, I'm {}!", "variadic")); + ``` + +- Replaced formatter actions with output sinks: `NoAction` -\> + `NullSink`, `Write` -\> `FileSink`, `ColorWriter` -\> + `ANSITerminalSink`. This improves naming consistency and shouldn\'t + affect client code unless these classes are used directly which + should be rarely needed. + +- Added `ThrowSystemError` function that formats a message and throws + `SystemError` containing the formatted message and system-specific + error description. For example, the following code + + ```c++ + FILE *f = fopen(filename, "r"); + if (!f) + ThrowSystemError(errno, "Failed to open file '{}'") << filename; + ``` + + will throw `SystemError` exception with description \"Failed to open + file \'\\': No such file or directory\" if file doesn\'t + exist. + +- Support for AppVeyor continuous integration platform. + +- `Format` now throws `SystemError` in case of I/O errors. + +- Improve test infrastructure. Print functions are now tested by + redirecting the output to a pipe. + +# 0.8.0 - 2014-04-14 + +- Initial release diff --git a/Submodules/fmt/doc/api.md b/Submodules/fmt/doc/api.md new file mode 100644 index 0000000..bf0df73 --- /dev/null +++ b/Submodules/fmt/doc/api.md @@ -0,0 +1,650 @@ +# API Reference + +The {fmt} library API consists of the following components: + +- [`fmt/base.h`](#base-api): the base API providing main formatting functions + for `char`/UTF-8 with C++20 compile-time checks and minimal dependencies +- [`fmt/format.h`](#format-api): `fmt::format` and other formatting functions + as well as locale support +- [`fmt/ranges.h`](#ranges-api): formatting of ranges and tuples +- [`fmt/chrono.h`](#chrono-api): date and time formatting +- [`fmt/std.h`](#std-api): formatters for standard library types +- [`fmt/compile.h`](#compile-api): format string compilation +- [`fmt/color.h`](#color-api): terminal colors and text styles +- [`fmt/os.h`](#os-api): system APIs +- [`fmt/ostream.h`](#ostream-api): `std::ostream` support +- [`fmt/args.h`](#args-api): dynamic argument lists +- [`fmt/printf.h`](#printf-api): safe `printf` +- [`fmt/xchar.h`](#xchar-api): optional `wchar_t` support + +All functions and types provided by the library reside in namespace `fmt` +and macros have prefix `FMT_`. + +## Base API + +`fmt/base.h` defines the base API which provides main formatting functions +for `char`/UTF-8 with C++20 compile-time checks. It has minimal include +dependencies for better compile times. This header is only beneficial when +using {fmt} as a library (the default) and not in the header-only mode. +It also provides `formatter` specializations for the following types: + +- `int`, `long long`, +- `unsigned`, `unsigned long long` +- `float`, `double`, `long double` +- `bool` +- `char` +- `const char*`, [`fmt::string_view`](#basic_string_view) +- `const void*` + +The following functions use [format string syntax](syntax.md) similar to that +of [str.format](https://docs.python.org/3/library/stdtypes.html#str.format) +in Python. They take *fmt* and *args* as arguments. + +*fmt* is a format string that contains literal text and replacement fields +surrounded by braces `{}`. The fields are replaced with formatted arguments +in the resulting string. [`fmt::format_string`](#format_string) is a format +string which can be implicitly constructed from a string literal or a +`constexpr` string and is checked at compile time in C++20. To pass a runtime +format string wrap it in [`fmt::runtime`](#runtime). + +*args* is an argument list representing objects to be formatted. + +I/O errors are reported as [`std::system_error`]( +https://en.cppreference.com/w/cpp/error/system_error) exceptions unless +specified otherwise. + +::: print(format_string, T&&...) + +::: print(FILE*, format_string, T&&...) + +::: println(format_string, T&&...) + +::: println(FILE*, format_string, T&&...) + +::: format_to(OutputIt&&, format_string, T&&...) + +::: format_to_n(OutputIt, size_t, format_string, T&&...) + +::: format_to_n_result + +::: formatted_size(format_string, T&&...) + + +### Formatting User-Defined Types + +The {fmt} library provides formatters for many standard C++ types. +See [`fmt/ranges.h`](#ranges-api) for ranges and tuples including standard +containers such as `std::vector`, [`fmt/chrono.h`](#chrono-api) for date and +time formatting and [`fmt/std.h`](#std-api) for other standard library types. + +There are two ways to make a user-defined type formattable: providing a +`format_as` function or specializing the `formatter` struct template. + +Use `format_as` if you want to make your type formattable as some other +type with the same format specifiers. The `format_as` function should +take an object of your type and return an object of a formattable type. +It should be defined in the same namespace as your type. + +Example ([run](https://godbolt.org/z/nvME4arz8)): + + #include + + namespace kevin_namespacy { + + enum class film { + house_of_cards, american_beauty, se7en = 7 + }; + + auto format_as(film f) { return fmt::underlying(f); } + + } + + int main() { + fmt::print("{}\n", kevin_namespacy::film::se7en); // Output: 7 + } + +Using specialization is more complex but gives you full control over +parsing and formatting. To use this method specialize the `formatter` +struct template for your type and implement `parse` and `format` +methods. + +The recommended way of defining a formatter is by reusing an existing +one via inheritance or composition. This way you can support standard +format specifiers without implementing them yourself. For example: + +```c++ +// color.h: +#include + +enum class color {red, green, blue}; + +template <> struct fmt::formatter: formatter { + // parse is inherited from formatter. + + auto format(color c, format_context& ctx) const + -> format_context::iterator; +}; +``` + +```c++ +// color.cc: +#include "color.h" +#include + +auto fmt::formatter::format(color c, format_context& ctx) const + -> format_context::iterator { + string_view name = "unknown"; + switch (c) { + case color::red: name = "red"; break; + case color::green: name = "green"; break; + case color::blue: name = "blue"; break; + } + return formatter::format(name, ctx); +} +``` + +Note that `formatter::format` is defined in `fmt/format.h` +so it has to be included in the source file. Since `parse` is inherited +from `formatter` it will recognize all string format +specifications, for example + +```c++ +fmt::format("{:>10}", color::blue) +``` + +will return `" blue"`. + + + +In general the formatter has the following form: + + template <> struct fmt::formatter { + // Parses format specifiers and stores them in the formatter. + // + // [ctx.begin(), ctx.end()) is a, possibly empty, character range that + // contains a part of the format string starting from the format + // specifications to be parsed, e.g. in + // + // fmt::format("{:f} continued", ...); + // + // the range will contain "f} continued". The formatter should parse + // specifiers until '}' or the end of the range. In this example the + // formatter should parse the 'f' specifier and return an iterator + // pointing to '}'. + constexpr auto parse(format_parse_context& ctx) + -> format_parse_context::iterator; + + // Formats value using the parsed format specification stored in this + // formatter and writes the output to ctx.out(). + auto format(const T& value, format_context& ctx) const + -> format_context::iterator; + }; + +It is recommended to at least support fill, align and width that apply +to the whole object and have the same semantics as in standard +formatters. + +You can also write a formatter for a hierarchy of classes: + +```c++ +// demo.h: +#include +#include + +struct A { + virtual ~A() {} + virtual std::string name() const { return "A"; } +}; + +struct B : A { + virtual std::string name() const { return "B"; } +}; + +template +struct fmt::formatter, char>> : + fmt::formatter { + auto format(const A& a, format_context& ctx) const { + return formatter::format(a.name(), ctx); + } +}; +``` + +```c++ +// demo.cc: +#include "demo.h" +#include + +int main() { + B b; + A& a = b; + fmt::print("{}", a); // Output: B +} +``` + +Providing both a `formatter` specialization and a `format_as` overload is +disallowed. + +::: basic_format_parse_context + +::: context + +::: format_context + +### Compile-Time Checks + +Compile-time format string checks are enabled by default on compilers +that support C++20 `consteval`. On older compilers you can use the +[FMT_STRING](#legacy-checks) macro defined in `fmt/format.h` instead. + +Unused arguments are allowed as in Python's `str.format` and ordinary functions. + +::: basic_format_string + +::: format_string + +::: runtime(string_view) + +### Named Arguments + +::: arg(const Char*, const T&) + +Named arguments are not supported in compile-time checks at the moment. + +### Type Erasure + +You can create your own formatting function with compile-time checks and +small binary footprint, for example ([run](https://godbolt.org/z/b9Pbasvzc)): + +```c++ +#include + +void vlog(const char* file, int line, + fmt::string_view fmt, fmt::format_args args) { + fmt::print("{}: {}: {}", file, line, fmt::vformat(fmt, args)); +} + +template +void log(const char* file, int line, + fmt::format_string fmt, T&&... args) { + vlog(file, line, fmt, fmt::make_format_args(args...)); +} + +#define MY_LOG(fmt, ...) log(__FILE__, __LINE__, fmt, __VA_ARGS__) + +MY_LOG("invalid squishiness: {}", 42); +``` + +Note that `vlog` is not parameterized on argument types which improves +compile times and reduces binary code size compared to a fully +parameterized version. + +::: make_format_args(T&...) + +::: basic_format_args + +::: format_args + +::: basic_format_arg + +### Compatibility + +::: basic_string_view + +::: string_view + +## Format API + +`fmt/format.h` defines the full format API providing additional +formatting functions and locale support. + + +::: format(format_string, T&&...) + +::: vformat(string_view, format_args) + +::: operator""_a() + +### Utilities + +::: ptr(T) + +::: underlying(Enum) + +::: to_string(const T&) + +::: group_digits(T) + +::: detail::buffer + +::: basic_memory_buffer + +### System Errors + +{fmt} does not use `errno` to communicate errors to the user, but it may +call system functions which set `errno`. Users should not make any +assumptions about the value of `errno` being preserved by library +functions. + +::: system_error + +::: format_system_error + +### Custom Allocators + +The {fmt} library supports custom dynamic memory allocators. A custom +allocator class can be specified as a template argument to +[`fmt::basic_memory_buffer`](#basic_memory_buffer): + + using custom_memory_buffer = + fmt::basic_memory_buffer; + +It is also possible to write a formatting function that uses a custom +allocator: + + using custom_string = + std::basic_string, custom_allocator>; + + custom_string vformat(custom_allocator alloc, fmt::string_view format_str, + fmt::format_args args) { + auto buf = custom_memory_buffer(alloc); + fmt::vformat_to(std::back_inserter(buf), format_str, args); + return custom_string(buf.data(), buf.size(), alloc); + } + + template + inline custom_string format(custom_allocator alloc, + fmt::string_view format_str, + const Args& ... args) { + return vformat(alloc, format_str, fmt::make_format_args(args...)); + } + +The allocator will be used for the output container only. Formatting +functions normally don't do any allocations for built-in and string +types except for non-default floating-point formatting that occasionally +falls back on `sprintf`. + +### Locale + +All formatting is locale-independent by default. Use the `'L'` format +specifier to insert the appropriate number separator characters from the +locale: + + #include + #include + + std::locale::global(std::locale("en_US.UTF-8")); + auto s = fmt::format("{:L}", 1000000); // s == "1,000,000" + +`fmt/format.h` provides the following overloads of formatting functions +that take `std::locale` as a parameter. The locale type is a template +parameter to avoid the expensive `` include. + +::: format(const Locale&, format_string, T&&...) + +::: format_to(OutputIt, const Locale&, format_string, T&&...) + +::: formatted_size(const Locale&, format_string, T&&...) + + +### Legacy Compile-Time Checks + +`FMT_STRING` enables compile-time checks on older compilers. It requires +C++14 or later and is a no-op in C++11. + +::: FMT_STRING + +To force the use of legacy compile-time checks, define the preprocessor +variable `FMT_ENFORCE_COMPILE_STRING`. When set, functions accepting +`FMT_STRING` will fail to compile with regular strings. + + +## Range and Tuple Formatting + +`fmt/ranges.h` provides formatting support for ranges and tuples: + + #include + + fmt::print("{}", std::tuple{'a', 42}); + // Output: ('a', 42) + +Using `fmt::join`, you can separate tuple elements with a custom separator: + + #include + + auto t = std::tuple{1, 'a'}; + fmt::print("{}", fmt::join(t, ", ")); + // Output: 1, a + +::: join(Range&&, string_view) + +::: join(It, Sentinel, string_view) + +::: join(std::initializer_list, string_view) + + +## Date and Time Formatting + +`fmt/chrono.h` provides formatters for + +- [`std::chrono::duration`](https://en.cppreference.com/w/cpp/chrono/duration) +- [`std::chrono::time_point`]( + https://en.cppreference.com/w/cpp/chrono/time_point) +- [`std::tm`](https://en.cppreference.com/w/cpp/chrono/c/tm) + +The format syntax is described in [Chrono Format Specifications](syntax.md# +chrono-format-specifications). + +**Example**: + + #include + + int main() { + std::time_t t = std::time(nullptr); + + fmt::print("The date is {:%Y-%m-%d}.", fmt::localtime(t)); + // Output: The date is 2020-11-07. + // (with 2020-11-07 replaced by the current date) + + using namespace std::literals::chrono_literals; + + fmt::print("Default format: {} {}\n", 42s, 100ms); + // Output: Default format: 42s 100ms + + fmt::print("strftime-like format: {:%H:%M:%S}\n", 3h + 15min + 30s); + // Output: strftime-like format: 03:15:30 + } + +::: localtime(std::time_t) + +::: gmtime(std::time_t) + + +## Standard Library Types Formatting + +`fmt/std.h` provides formatters for: + +- [`std::atomic`](https://en.cppreference.com/w/cpp/atomic/atomic) +- [`std::atomic_flag`](https://en.cppreference.com/w/cpp/atomic/atomic_flag) +- [`std::bitset`](https://en.cppreference.com/w/cpp/utility/bitset) +- [`std::error_code`](https://en.cppreference.com/w/cpp/error/error_code) +- [`std::filesystem::path`](https://en.cppreference.com/w/cpp/filesystem/path) +- [`std::monostate`](https://en.cppreference.com/w/cpp/utility/variant/monostate) +- [`std::optional`](https://en.cppreference.com/w/cpp/utility/optional) +- [`std::source_location`](https://en.cppreference.com/w/cpp/utility/source_location) +- [`std::thread::id`](https://en.cppreference.com/w/cpp/thread/thread/id) +- [`std::variant`](https://en.cppreference.com/w/cpp/utility/variant/variant) + +::: ptr(const std::unique_ptr&) + +::: ptr(const std::shared_ptr&) + +### Formatting Variants + +A `std::variant` is only formattable if every variant alternative is +formattable, and requires the `__cpp_lib_variant` [library +feature](https://en.cppreference.com/w/cpp/feature_test). + +**Example**: + + #include + + fmt::print("{}", std::variant('x')); + // Output: variant('x') + + fmt::print("{}", std::variant()); + // Output: variant(monostate) + + +## Format String Compilation + +`fmt/compile.h` provides format string compilation enabled via the +`FMT_COMPILE` macro or the `_cf` user-defined literal defined in +namespace `fmt::literals`. Format strings marked with `FMT_COMPILE` +or `_cf` are parsed, checked and converted into efficient formatting +code at compile-time. This supports arguments of built-in and string +types as well as user-defined types with `format` functions taking +the format context type as a template parameter in their `formatter` +specializations. For example: + + template <> struct fmt::formatter { + constexpr auto parse(format_parse_context& ctx); + + template + auto format(const point& p, FormatContext& ctx) const; + }; + +Format string compilation can generate more binary code compared to the +default API and is only recommended in places where formatting is a +performance bottleneck. + +::: FMT_COMPILE + +::: operator""_cf + + +## Terminal Colors and Text Styles + +`fmt/color.h` provides support for terminal color and text style output. + +::: print(const text_style&, format_string, T&&...) + +::: fg(detail::color_type) + +::: bg(detail::color_type) + +::: styled(const T&, text_style) + + +## System APIs + +::: ostream + +::: windows_error + + +## `std::ostream` Support + +`fmt/ostream.h` provides `std::ostream` support including formatting of +user-defined types that have an overloaded insertion operator +(`operator<<`). In order to make a type formattable via `std::ostream` +you should provide a `formatter` specialization inherited from +`ostream_formatter`: + + #include + + struct date { + int year, month, day; + + friend std::ostream& operator<<(std::ostream& os, const date& d) { + return os << d.year << '-' << d.month << '-' << d.day; + } + }; + + template <> struct fmt::formatter : ostream_formatter {}; + + std::string s = fmt::format("The date is {}", date{2012, 12, 9}); + // s == "The date is 2012-12-9" + +::: streamed(const T&) + +::: print(std::ostream&, format_string, T&&...) + + +## Dynamic Argument Lists + +The header `fmt/args.h` provides `dynamic_format_arg_store`, a builder-like API +that can be used to construct format argument lists dynamically. + +::: dynamic_format_arg_store + + +## Safe `printf` + +The header `fmt/printf.h` provides `printf`-like formatting +functionality. The following functions use [printf format string +syntax](https://pubs.opengroup.org/onlinepubs/009695399/functions/fprintf.html) +with the POSIX extension for positional arguments. Unlike their standard +counterparts, the `fmt` functions are type-safe and throw an exception +if an argument type doesn't match its format specification. + +::: printf(string_view, const T&...) + +::: fprintf(std::FILE*, const S&, const T&...) + +::: sprintf(const S&, const T&...) + + +## Wide Strings + +The optional header `fmt/xchar.h` provides support for `wchar_t` and +exotic character types. + +::: is_char + +::: wstring_view + +::: wformat_context + +::: to_wstring(const T&) + +## Compatibility with C++20 `std::format` + +{fmt} implements nearly all of the [C++20 formatting +library](https://en.cppreference.com/w/cpp/utility/format) with the +following differences: + +- Names are defined in the `fmt` namespace instead of `std` to avoid + collisions with standard library implementations. +- Width calculation doesn't use grapheme clusterization. The latter has + been implemented in a separate branch but hasn't been integrated yet. diff --git a/Submodules/fmt/doc/fmt.css b/Submodules/fmt/doc/fmt.css new file mode 100644 index 0000000..994d6e2 --- /dev/null +++ b/Submodules/fmt/doc/fmt.css @@ -0,0 +1,61 @@ +:root { + --md-primary-fg-color: #0050D0; +} + +.md-grid { + max-width: 960px; +} + +@media (min-width: 400px) { + .md-tabs { + display: block; + } +} + +.docblock { + border-left: .05rem solid var(--md-primary-fg-color); +} + +.docblock-desc { + margin-left: 1em; +} + +pre > code.decl { + white-space: pre-wrap; +} + + +code.decl > div { + text-indent: -2ch; /* Negative indent to counteract the indent on the first line */ + padding-left: 2ch; /* Add padding to the left to create an indent */ +} + +.features-container { + display: flex; + flex-wrap: wrap; + gap: 20px; + justify-content: center; /* Center the items horizontally */ +} + +.feature { + flex: 1 1 calc(50% - 20px); /* Two columns with space between */ + max-width: 600px; /* Set the maximum width for the feature boxes */ + box-sizing: border-box; + padding: 10px; + overflow: hidden; /* Hide overflow content */ + text-overflow: ellipsis; /* Handle text overflow */ + white-space: normal; /* Allow text wrapping */ +} + +.feature h2 { + margin-top: 0px; + font-weight: bold; +} + +@media (max-width: 768px) { + .feature { + flex: 1 1 100%; /* Stack columns on smaller screens */ + max-width: 100%; /* Allow full width on smaller screens */ + white-space: normal; /* Allow text wrapping on smaller screens */ + } +} diff --git a/Submodules/fmt/doc/fmt.js b/Submodules/fmt/doc/fmt.js new file mode 100644 index 0000000..da7e95b --- /dev/null +++ b/Submodules/fmt/doc/fmt.js @@ -0,0 +1,4 @@ +document$.subscribe(() => { + hljs.highlightAll(), + { language: 'c++' } +}) diff --git a/Submodules/fmt/doc/get-started.md b/Submodules/fmt/doc/get-started.md new file mode 100644 index 0000000..e61da88 --- /dev/null +++ b/Submodules/fmt/doc/get-started.md @@ -0,0 +1,222 @@ +# Get Started + +Compile and run {fmt} examples online with [Compiler Explorer]( +https://godbolt.org/z/P7h6cd6o3). + +{fmt} is compatible with any build system. The next section describes its usage +with CMake, while the [Build Systems](#build-systems) section covers the rest. + +## CMake + +{fmt} provides two CMake targets: `fmt::fmt` for the compiled library and +`fmt::fmt-header-only` for the header-only library. It is recommended to use +the compiled library for improved build times. + +There are three primary ways to use {fmt} with CMake: + +* **FetchContent**: Starting from CMake 3.11, you can use [`FetchContent`]( + https://cmake.org/cmake/help/v3.30/module/FetchContent.html) to automatically + download {fmt} as a dependency at configure time: + + include(FetchContent) + + FetchContent_Declare( + fmt + GIT_REPOSITORY https://github.com/fmtlib/fmt + GIT_TAG e69e5f977d458f2650bb346dadf2ad30c5320281) # 10.2.1 + FetchContent_MakeAvailable(fmt) + + target_link_libraries( fmt::fmt) + +* **Installed**: You can find and use an [installed](#installation) version of + {fmt} in your `CMakeLists.txt` file as follows: + + find_package(fmt) + target_link_libraries( fmt::fmt) + +* **Embedded**: You can add the {fmt} source tree to your project and include it + in your `CMakeLists.txt` file: + + add_subdirectory(fmt) + target_link_libraries( fmt::fmt) + +## Installation + +### Debian/Ubuntu + +To install {fmt} on Debian, Ubuntu, or any other Debian-based Linux +distribution, use the following command: + + apt install libfmt-dev + +### Homebrew + +Install {fmt} on macOS using [Homebrew](https://brew.sh/): + + brew install fmt + +### Conda + +Install {fmt} on Linux, macOS, and Windows with [Conda]( +https://docs.conda.io/en/latest/), using its [conda-forge package]( +https://github.com/conda-forge/fmt-feedstock): + + conda install -c conda-forge fmt + +### vcpkg + +Download and install {fmt} using the vcpkg package manager: + + git clone https://github.com/Microsoft/vcpkg.git + cd vcpkg + ./bootstrap-vcpkg.sh + ./vcpkg integrate install + ./vcpkg install fmt + + + +## Building from Source + +CMake works by generating native makefiles or project files that can be +used in the compiler environment of your choice. The typical workflow +starts with: + + mkdir build # Create a directory to hold the build output. + cd build + cmake .. # Generate native build scripts. + +run in the `fmt` repository. + +If you are on a Unix-like system, you should now see a Makefile in the +current directory. Now you can build the library by running `make`. + +Once the library has been built you can invoke `make test` to run the tests. + +You can control generation of the make `test` target with the `FMT_TEST` +CMake option. This can be useful if you include fmt as a subdirectory in +your project but don't want to add fmt's tests to your `test` target. + +To build a shared library set the `BUILD_SHARED_LIBS` CMake variable to `TRUE`: + + cmake -DBUILD_SHARED_LIBS=TRUE .. + +To build a static library with position-independent code (e.g. for +linking it into another shared library such as a Python extension), set the +`CMAKE_POSITION_INDEPENDENT_CODE` CMake variable to `TRUE`: + + cmake -DCMAKE_POSITION_INDEPENDENT_CODE=TRUE .. + +After building the library you can install it on a Unix-like system by +running `sudo make install`. + +### Building the Docs + +To build the documentation you need the following software installed on +your system: + +- [Python](https://www.python.org/) +- [Doxygen](http://www.stack.nl/~dimitri/doxygen/) +- [MkDocs](https://www.mkdocs.org/) with `mkdocs-material`, `mkdocstrings`, + `pymdown-extensions` and `mike` + +First generate makefiles or project files using CMake as described in +the previous section. Then compile the `doc` target/project, for example: + + make doc + +This will generate the HTML documentation in `doc/html`. + +## Build Systems + +### build2 + +You can use [build2](https://build2.org), a dependency manager and a build +system, to use {fmt}. + +Currently this package is available in these package repositories: + +- for released and published versions. +- for unreleased or custom versions. + +**Usage:** + +- `build2` package name: `fmt` +- Library target name: `lib{fmt}` + +To make your `build2` project depend on `fmt`: + +- Add one of the repositories to your configurations, or in your + `repositories.manifest`, if not already there: + + : + role: prerequisite + location: https://pkg.cppget.org/1/stable + +- Add this package as a dependency to your `manifest` file (example + for version 10): + + depends: fmt ~10.0.0 + +- Import the target and use it as a prerequisite to your own target + using `fmt` in the appropriate `buildfile`: + + import fmt = fmt%lib{fmt} + lib{mylib} : cxx{**} ... $fmt + +Then build your project as usual with `b` or `bdep update`. + +### Meson + +[Meson WrapDB](https://mesonbuild.com/Wrapdb-projects.html) includes an `fmt` +package. + +**Usage:** + +- Install the `fmt` subproject from the WrapDB by running: + + meson wrap install fmt + + from the root of your project. + +- In your project's `meson.build` file, add an entry for the new subproject: + + fmt = subproject('fmt') + fmt_dep = fmt.get_variable('fmt_dep') + +- Include the new dependency object to link with fmt: + + my_build_target = executable( + 'name', 'src/main.cc', dependencies: [fmt_dep]) + +**Options:** + +If desired, {fmt} can be built as a static library, or as a header-only library. + +For a static build, use the following subproject definition: + + fmt = subproject('fmt', default_options: 'default_library=static') + fmt_dep = fmt.get_variable('fmt_dep') + +For the header-only version, use: + + fmt = subproject('fmt') + fmt_dep = fmt.get_variable('fmt_header_only_dep') + +### Android NDK + +{fmt} provides [Android.mk file]( +https://github.com/fmtlib/fmt/blob/master/support/Android.mk) that can be used +to build the library with [Android NDK]( +https://developer.android.com/tools/sdk/ndk/index.html). + +### Other + +To use the {fmt} library with any other build system, add +`include/fmt/base.h`, `include/fmt/format.h`, `include/fmt/format-inl.h`, +`src/format.cc` and optionally other headers from a [release archive]( +https://github.com/fmtlib/fmt/releases) or the [git repository]( +https://github.com/fmtlib/fmt) to your project, add `include` to include +directories and make sure `src/format.cc` is compiled and linked with your code. diff --git a/Submodules/fmt/doc/index.md b/Submodules/fmt/doc/index.md new file mode 100644 index 0000000..457857c --- /dev/null +++ b/Submodules/fmt/doc/index.md @@ -0,0 +1,151 @@ +--- +hide: + - navigation + - toc +--- + +# A modern formatting library + +
+ +
+

Safety

+

+ Inspired by Python's formatting facility, {fmt} provides a safe replacement + for the printf family of functions. Errors in format strings, + which are a common source of vulnerabilities in C, are reported at + compile time. For example: + + 

fmt::format("{:d}", "I am not a number");
+ + will give a compile-time error because d is not a valid + format specifier for strings. APIs like + fmt::format prevent buffer overflow errors via + automatic memory management. +

+→ Learn more +
+ +
+

Extensibility

+

+ Formatting of most standard types, including all containers, dates, + and times is supported out-of-the-box. For example: + + 

fmt::print("{}", std::vector{1, 2, 3});
+ + prints the vector in a JSON-like format: + + 
[1, 2, 3]
+ + You can make your own types formattable and even make compile-time + checks work for them. +

+→ Learn more +
+ +
+

Performance

+

+ {fmt} can be anywhere from tens of percent to 20-30 times faster than + iostreams and sprintf, especially for numeric formatting. + + + + + + The library minimizes dynamic memory allocations and can optionally + compile format strings to optimal code. +

+
+ +
+

Unicode support

+

+ {fmt} provides portable Unicode support on major operating systems + with UTF-8 and char strings. For example: + + 

fmt::print("Слава Україні!");
+ + will be printed correctly on Linux, macOS, and even Windows console, + irrespective of the codepages. +

+

+ The default is locale-independent, but you can opt into localized + formatting and {fmt} makes it work with Unicode, addressing issues in the + standard libary. +

+
+ +
+

Fast compilation

+

+ The library makes extensive use of type erasure to achieve fast + compilation. fmt/base.h provides a subset of the API with + minimal include dependencies and enough functionality to replace + all uses of *printf. +

+

+ Code using {fmt} is usually several times faster to compile than the + equivalent iostreams code, and while printf compiles faster + still, the gap is narrowing. +

+ +→ Learn more +
+ +
+

Small binary footprint

+

+ Type erasure is also used to prevent template bloat, resulting in compact + per-call binary code. For example, a call to fmt::print with + a single argument is just a few + instructions, comparable to printf despite adding + runtime safety, and much smaller than the equivalent iostreams code. +

+

+ The library itself has small binary footprint and some components such as + floating-point formatting can be disabled to make it even smaller for + resource-constrained devices. +

+
+ +
+

Portability

+

+ {fmt} has a small self-contained codebase with the core consisting of + just three headers and no external dependencies. +

+

+ The library is highly portable and requires only a minimal subset of + C++11 features which are available in GCC 4.8, Clang 3.4, MSVC 19.0 + (2015) and later. Newer compiler and standard library features are used + if available, and enable additional functionality. +

+

+ Where possible, the output of formatting functions is consistent across + platforms. +

+

+
+ +
+

Open source

+

+ {fmt} is in the top hundred open-source C++ libraries on GitHub and has + hundreds of + all-time contributors. +

+

+ The library is distributed under a permissive MIT + license and is + relied upon by many open-source projects, including Blender, PyTorch, + Apple's FoundationDB, Windows Terminal, MongoDB, and others. +

+
+ +
diff --git a/Submodules/fmt/doc/perf.svg b/Submodules/fmt/doc/perf.svg new file mode 100644 index 0000000..7867a15 --- /dev/null +++ b/Submodules/fmt/doc/perf.svg @@ -0,0 +1 @@ +double to string02505007501,0001,2501,500ostringstreamostrstreamsprintfdoubleconvfmtTime (ns), smaller is better \ No newline at end of file diff --git a/Submodules/fmt/doc/python-license.txt b/Submodules/fmt/doc/python-license.txt new file mode 100644 index 0000000..88eed1f --- /dev/null +++ b/Submodules/fmt/doc/python-license.txt @@ -0,0 +1,290 @@ +A. HISTORY OF THE SOFTWARE +========================== + +Python was created in the early 1990s by Guido van Rossum at Stichting +Mathematisch Centrum (CWI, see http://www.cwi.nl) in the Netherlands +as a successor of a language called ABC. Guido remains Python's +principal author, although it includes many contributions from others. + +In 1995, Guido continued his work on Python at the Corporation for +National Research Initiatives (CNRI, see http://www.cnri.reston.va.us) +in Reston, Virginia where he released several versions of the +software. + +In May 2000, Guido and the Python core development team moved to +BeOpen.com to form the BeOpen PythonLabs team. In October of the same +year, the PythonLabs team moved to Digital Creations (now Zope +Corporation, see http://www.zope.com). In 2001, the Python Software +Foundation (PSF, see http://www.python.org/psf/) was formed, a +non-profit organization created specifically to own Python-related +Intellectual Property. Zope Corporation is a sponsoring member of +the PSF. + +All Python releases are Open Source (see http://www.opensource.org for +the Open Source Definition). Historically, most, but not all, Python +releases have also been GPL-compatible; the table below summarizes +the various releases. + + Release Derived Year Owner GPL- + from compatible? (1) + + 0.9.0 thru 1.2 1991-1995 CWI yes + 1.3 thru 1.5.2 1.2 1995-1999 CNRI yes + 1.6 1.5.2 2000 CNRI no + 2.0 1.6 2000 BeOpen.com no + 1.6.1 1.6 2001 CNRI yes (2) + 2.1 2.0+1.6.1 2001 PSF no + 2.0.1 2.0+1.6.1 2001 PSF yes + 2.1.1 2.1+2.0.1 2001 PSF yes + 2.2 2.1.1 2001 PSF yes + 2.1.2 2.1.1 2002 PSF yes + 2.1.3 2.1.2 2002 PSF yes + 2.2.1 2.2 2002 PSF yes + 2.2.2 2.2.1 2002 PSF yes + 2.2.3 2.2.2 2003 PSF yes + 2.3 2.2.2 2002-2003 PSF yes + 2.3.1 2.3 2002-2003 PSF yes + 2.3.2 2.3.1 2002-2003 PSF yes + 2.3.3 2.3.2 2002-2003 PSF yes + 2.3.4 2.3.3 2004 PSF yes + 2.3.5 2.3.4 2005 PSF yes + 2.4 2.3 2004 PSF yes + 2.4.1 2.4 2005 PSF yes + 2.4.2 2.4.1 2005 PSF yes + 2.4.3 2.4.2 2006 PSF yes + 2.4.4 2.4.3 2006 PSF yes + 2.5 2.4 2006 PSF yes + 2.5.1 2.5 2007 PSF yes + 2.5.2 2.5.1 2008 PSF yes + 2.5.3 2.5.2 2008 PSF yes + 2.6 2.5 2008 PSF yes + 2.6.1 2.6 2008 PSF yes + 2.6.2 2.6.1 2009 PSF yes + 2.6.3 2.6.2 2009 PSF yes + 2.6.4 2.6.3 2009 PSF yes + 2.6.5 2.6.4 2010 PSF yes + 3.0 2.6 2008 PSF yes + 3.0.1 3.0 2009 PSF yes + 3.1 3.0.1 2009 PSF yes + 3.1.1 3.1 2009 PSF yes + 3.1.2 3.1.1 2010 PSF yes + 3.1.3 3.1.2 2010 PSF yes + 3.1.4 3.1.3 2011 PSF yes + 3.2 3.1 2011 PSF yes + 3.2.1 3.2 2011 PSF yes + 3.2.2 3.2.1 2011 PSF yes + 3.2.3 3.2.2 2012 PSF yes + 3.3.0 3.2 2012 PSF yes + +Footnotes: + +(1) GPL-compatible doesn't mean that we're distributing Python under + the GPL. All Python licenses, unlike the GPL, let you distribute + a modified version without making your changes open source. The + GPL-compatible licenses make it possible to combine Python with + other software that is released under the GPL; the others don't. + +(2) According to Richard Stallman, 1.6.1 is not GPL-compatible, + because its license has a choice of law clause. According to + CNRI, however, Stallman's lawyer has told CNRI's lawyer that 1.6.1 + is "not incompatible" with the GPL. + +Thanks to the many outside volunteers who have worked under Guido's +direction to make these releases possible. + + +B. TERMS AND CONDITIONS FOR ACCESSING OR OTHERWISE USING PYTHON +=============================================================== + +PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2 +-------------------------------------------- + +1. This LICENSE AGREEMENT is between the Python Software Foundation +("PSF"), and the Individual or Organization ("Licensee") accessing and +otherwise using this software ("Python") in source or binary form and +its associated documentation. + +2. Subject to the terms and conditions of this License Agreement, PSF hereby +grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce, +analyze, test, perform and/or display publicly, prepare derivative works, +distribute, and otherwise use Python alone or in any derivative version, +provided, however, that PSF's License Agreement and PSF's notice of copyright, +i.e., "Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, +2011, 2012 Python Software Foundation; All Rights Reserved" are retained in Python +alone or in any derivative version prepared by Licensee. + +3. In the event Licensee prepares a derivative work that is based on +or incorporates Python or any part thereof, and wants to make +the derivative work available to others as provided herein, then +Licensee hereby agrees to include in any such work a brief summary of +the changes made to Python. + +4. PSF is making Python available to Licensee on an "AS IS" +basis. PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR +IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND +DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS +FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT +INFRINGE ANY THIRD PARTY RIGHTS. + +5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON +FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS +A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON, +OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF. + +6. 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Subject to the terms and conditions of this License Agreement, CNRI +hereby grants Licensee a nonexclusive, royalty-free, world-wide +license to reproduce, analyze, test, perform and/or display publicly, +prepare derivative works, distribute, and otherwise use Python 1.6.1 +alone or in any derivative version, provided, however, that CNRI's +License Agreement and CNRI's notice of copyright, i.e., "Copyright (c) +1995-2001 Corporation for National Research Initiatives; All Rights +Reserved" are retained in Python 1.6.1 alone or in any derivative +version prepared by Licensee. Alternately, in lieu of CNRI's License +Agreement, Licensee may substitute the following text (omitting the +quotes): "Python 1.6.1 is made available subject to the terms and +conditions in CNRI's License Agreement. This Agreement together with +Python 1.6.1 may be located on the Internet using the following +unique, persistent identifier (known as a handle): 1895.22/1013. This +Agreement may also be obtained from a proxy server on the Internet +using the following URL: http://hdl.handle.net/1895.22/1013". + +3. In the event Licensee prepares a derivative work that is based on +or incorporates Python 1.6.1 or any part thereof, and wants to make +the derivative work available to others as provided herein, then +Licensee hereby agrees to include in any such work a brief summary of +the changes made to Python 1.6.1. + +4. CNRI is making Python 1.6.1 available to Licensee on an "AS IS" +basis. CNRI MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR +IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, CNRI MAKES NO AND +DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS +FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 1.6.1 WILL NOT +INFRINGE ANY THIRD PARTY RIGHTS. + +5. CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON +1.6.1 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS +A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1, +OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF. + +6. This License Agreement will automatically terminate upon a material +breach of its terms and conditions. + +7. This License Agreement shall be governed by the federal +intellectual property law of the United States, including without +limitation the federal copyright law, and, to the extent such +U.S. federal law does not apply, by the law of the Commonwealth of +Virginia, excluding Virginia's conflict of law provisions. +Notwithstanding the foregoing, with regard to derivative works based +on Python 1.6.1 that incorporate non-separable material that was +previously distributed under the GNU General Public License (GPL), the +law of the Commonwealth of Virginia shall govern this License +Agreement only as to issues arising under or with respect to +Paragraphs 4, 5, and 7 of this License Agreement. Nothing in this +License Agreement shall be deemed to create any relationship of +agency, partnership, or joint venture between CNRI and Licensee. This +License Agreement does not grant permission to use CNRI trademarks or +trade name in a trademark sense to endorse or promote products or +services of Licensee, or any third party. + +8. By clicking on the "ACCEPT" button where indicated, or by copying, +installing or otherwise using Python 1.6.1, Licensee agrees to be +bound by the terms and conditions of this License Agreement. + + ACCEPT + + +CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2 +-------------------------------------------------- + +Copyright (c) 1991 - 1995, Stichting Mathematisch Centrum Amsterdam, +The Netherlands. All rights reserved. + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +provided that the above copyright notice appear in all copies and that +both that copyright notice and this permission notice appear in +supporting documentation, and that the name of Stichting Mathematisch +Centrum or CWI not be used in advertising or publicity pertaining to +distribution of the software without specific, written prior +permission. + +STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO +THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE +FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT +OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. diff --git a/Submodules/fmt/doc/syntax.md b/Submodules/fmt/doc/syntax.md new file mode 100644 index 0000000..87fa53f --- /dev/null +++ b/Submodules/fmt/doc/syntax.md @@ -0,0 +1,887 @@ +# Format String Syntax + +Formatting functions such as [`fmt::format`](api.md#format) and [`fmt::print`]( +api.md#print) use the same format string syntax described in this section. + +Format strings contain "replacement fields" surrounded by curly braces `{}`. +Anything that is not contained in braces is considered literal text, which is +copied unchanged to the output. If you need to include a brace character in +the literal text, it can be escaped by doubling: `{{` and `}}`. + +The grammar for a replacement field is as follows: + + +
replacement_field ::= "{" [arg_id] [":" (format_spec | chrono_format_spec)] "}"
+arg_id            ::= integer | identifier
+integer           ::= digit+
+digit             ::= "0"..."9"
+identifier        ::= id_start id_continue*
+id_start          ::= "a"..."z" | "A"..."Z" | "_"
+id_continue       ::= id_start | digit
+
+ +In less formal terms, the replacement field can start with an *arg_id* that +specifies the argument whose value is to be formatted and inserted into the +output instead of the replacement field. The *arg_id* is optionally followed +by a *format_spec*, which is preceded by a colon `':'`. These specify a +non-default format for the replacement value. + +See also the [Format Specification +Mini-Language](#format-specification-mini-language) section. + +If the numerical arg_ids in a format string are 0, 1, 2, ... in sequence, +they can all be omitted (not just some) and the numbers 0, 1, 2, ... will be +automatically inserted in that order. + +Named arguments can be referred to by their names or indices. + +Some simple format string examples: + +```c++ +"First, thou shalt count to {0}" // References the first argument +"Bring me a {}" // Implicitly references the first argument +"From {} to {}" // Same as "From {0} to {1}" +``` + +The *format_spec* field contains a specification of how the value should +be presented, including such details as field width, alignment, padding, +decimal precision and so on. Each value type can define its own +"formatting mini-language" or interpretation of the *format_spec*. + +Most built-in types support a common formatting mini-language, which is +described in the next section. + +A *format_spec* field can also include nested replacement fields in +certain positions within it. These nested replacement fields can contain +only an argument id; format specifications are not allowed. This allows +the formatting of a value to be dynamically specified. + +See the [Format Examples](#format-examples) section for some examples. + +## Format Specification Mini-Language + +"Format specifications" are used within replacement fields contained within a +format string to define how individual values are presented. Each formattable +type may define how the format specification is to be interpreted. + +Most built-in types implement the following options for format +specifications, although some of the formatting options are only +supported by the numeric types. + +The general form of a *standard format specifier* is: + + +
format_spec ::= [[fill]align][sign]["#"]["0"][width]["." precision]["L"][type]
+fill        ::= <a character other than '{' or '}'>
+align       ::= "<" | ">" | "^"
+sign        ::= "+" | "-" | " "
+width       ::= integer | "{" [arg_id] "}"
+precision   ::= integer | "{" [arg_id] "}"
+type        ::= "a" | "A" | "b" | "B" | "c" | "d" | "e" | "E" | "f" | "F" |
+                "g" | "G" | "o" | "p" | "s" | "x" | "X" | "?"
+
+ +The *fill* character can be any Unicode code point other than `'{'` or `'}'`. +The presence of a fill character is signaled by the character following it, +which must be one of the alignment options. If the second character of +*format_spec* is not a valid alignment option, then it is assumed that both +the fill character and the alignment option are absent. + +The meaning of the various alignment options is as follows: + + + + + + + + + + + + + + + + + + +
OptionMeaning
'<' + Forces the field to be left-aligned within the available space (this is the + default for most objects). +
'>' + Forces the field to be right-aligned within the available space (this is + the default for numbers). +
'^'Forces the field to be centered within the available space.
+ +Note that unless a minimum field width is defined, the field width will +always be the same size as the data to fill it, so that the alignment +option has no meaning in this case. + +The *sign* option is only valid for floating point and signed integer types, +and can be one of the following: + + + + + + + + + + + + + + + + + + +
OptionMeaning
'+' + Indicates that a sign should be used for both nonnegative as well as + negative numbers. +
'-' + Indicates that a sign should be used only for negative numbers (this is the + default behavior). +
space + Indicates that a leading space should be used on nonnegative numbers, and a + minus sign on negative numbers. +
+ +The `'#'` option causes the "alternate form" to be used for the +conversion. The alternate form is defined differently for different +types. This option is only valid for integer and floating-point types. +For integers, when binary, octal, or hexadecimal output is used, this +option adds the prefix respective `"0b"` (`"0B"`), `"0"`, or `"0x"` +(`"0X"`) to the output value. Whether the prefix is lower-case or +upper-case is determined by the case of the type specifier, for example, +the prefix `"0x"` is used for the type `'x'` and `"0X"` is used for +`'X'`. For floating-point numbers the alternate form causes the result +of the conversion to always contain a decimal-point character, even if +no digits follow it. Normally, a decimal-point character appears in the +result of these conversions only if a digit follows it. In addition, for +`'g'` and `'G'` conversions, trailing zeros are not removed from the +result. + +*width* is a decimal integer defining the minimum field width. If not +specified, then the field width will be determined by the content. + +Preceding the *width* field by a zero (`'0'`) character enables +sign-aware zero-padding for numeric types. It forces the padding to be +placed after the sign or base (if any) but before the digits. This is +used for printing fields in the form "+000000120". This option is only +valid for numeric types and it has no effect on formatting of infinity +and NaN. This option is ignored when any alignment specifier is present. + +The *precision* is a decimal number indicating how many digits should be +displayed after the decimal point for a floating-point value formatted +with `'f'` and `'F'`, or before and after the decimal point for a +floating-point value formatted with `'g'` or `'G'`. For non-number types +the field indicates the maximum field size - in other words, how many +characters will be used from the field content. The *precision* is not +allowed for integer, character, Boolean, and pointer values. Note that a +C string must be null-terminated even if precision is specified. + +The `'L'` option uses the current locale setting to insert the appropriate +number separator characters. This option is only valid for numeric types. + +Finally, the *type* determines how the data should be presented. + +The available string presentation types are: + + + + + + + + + + + + + + + + + + +
TypeMeaning
's' + String format. This is the default type for strings and may be omitted. +
'?'Debug format. The string is quoted and special characters escaped.
noneThe same as 's'.
+ +The available character presentation types are: + + + + + + + + + + + + + + + + + + +
TypeMeaning
'c' + Character format. This is the default type for characters and may be + omitted. +
'?'Debug format. The character is quoted and special characters escaped.
noneThe same as 'c'.
+ +The available integer presentation types are: + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
TypeMeaning
'b' + Binary format. Outputs the number in base 2. Using the '#' + option with this type adds the prefix "0b" to the output value. +
'B' + Binary format. Outputs the number in base 2. Using the '#' + option with this type adds the prefix "0B" to the output value. +
'c'Character format. Outputs the number as a character.
'd'Decimal integer. Outputs the number in base 10.
'o'Octal format. Outputs the number in base 8.
'x' + Hex format. Outputs the number in base 16, using lower-case letters for the + digits above 9. Using the '#' option with this type adds the + prefix "0x" to the output value. +
'X' + Hex format. Outputs the number in base 16, using upper-case letters for the + digits above 9. Using the '#' option with this type adds the + prefix "0X" to the output value. +
noneThe same as 'd'.
+ +Integer presentation types can also be used with character and Boolean values +with the only exception that `'c'` cannot be used with `bool`. Boolean values +are formatted using textual representation, either `true` or `false`, if the +presentation type is not specified. + +The available presentation types for floating-point values are: + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
TypeMeaning
'a' + Hexadecimal floating point format. Prints the number in base 16 with + prefix "0x" and lower-case letters for digits above 9. + Uses 'p' to indicate the exponent. +
'A' + Same as 'a' except it uses upper-case letters for the + prefix, digits above 9 and to indicate the exponent. +
'e' + Exponent notation. Prints the number in scientific notation using + the letter 'e' to indicate the exponent. +
'E' + Exponent notation. Same as 'e' except it uses an + upper-case 'E' as the separator character. +
'f'Fixed point. Displays the number as a fixed-point number.
'F' + Fixed point. Same as 'f', but converts nan + to NAN and inf to INF. +
'g' +

General format. For a given precision p >= 1, + this rounds the number to p significant digits and then + formats the result in either fixed-point format or in scientific + notation, depending on its magnitude.

+

A precision of 0 is treated as equivalent to a precision + of 1.

+
'G' + General format. Same as 'g' except switches to + 'E' if the number gets too large. The representations of + infinity and NaN are uppercased, too. +
none + Similar to 'g', except that the default precision is as + high as needed to represent the particular value. +
+ +The available presentation types for pointers are: + + + + + + + + + + + + + + +
TypeMeaning
'p' + Pointer format. This is the default type for pointers and may be omitted. +
noneThe same as 'p'.
+ +## Chrono Format Specifications + +Format specifications for chrono duration and time point types as well as +`std::tm` have the following syntax: + + +
chrono_format_spec ::= [[fill]align][width]["." precision][chrono_specs]
+chrono_specs       ::= conversion_spec |
+                       chrono_specs (conversion_spec | literal_char)
+conversion_spec    ::= "%" [padding_modifier] [locale_modifier] chrono_type
+literal_char       ::= <a character other than '{', '}' or '%'>
+padding_modifier   ::= "-" | "_"  | "0"
+locale_modifier    ::= "E" | "O"
+chrono_type        ::= "a" | "A" | "b" | "B" | "c" | "C" | "d" | "D" | "e" |
+                       "F" | "g" | "G" | "h" | "H" | "I" | "j" | "m" | "M" |
+                       "n" | "p" | "q" | "Q" | "r" | "R" | "S" | "t" | "T" |
+                       "u" | "U" | "V" | "w" | "W" | "x" | "X" | "y" | "Y" |
+                       "z" | "Z" | "%"
+
+ +Literal chars are copied unchanged to the output. Precision is valid only +for `std::chrono::duration` types with a floating-point representation type. + +The available presentation types (*chrono_type*) are: + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
TypeMeaning
'a' + The abbreviated weekday name, e.g. "Sat". If the value does not contain a + valid weekday, an exception of type format_error is thrown. +
'A' + The full weekday name, e.g. "Saturday". If the value does not contain a + valid weekday, an exception of type format_error is thrown. +
'b' + The abbreviated month name, e.g. "Nov". If the value does not contain a + valid month, an exception of type format_error is thrown. +
'B' + The full month name, e.g. "November". If the value does not contain a valid + month, an exception of type format_error is thrown. +
'c' + The date and time representation, e.g. "Sat Nov 12 22:04:00 1955". The + modified command %Ec produces the locale's alternate date and + time representation. +
'C' + The year divided by 100 using floored division, e.g. "19". If the result + is a single decimal digit, it is prefixed with 0. The modified command + %EC produces the locale's alternative representation of the + century. +
'd' + The day of month as a decimal number. If the result is a single decimal + digit, it is prefixed with 0. The modified command %Od + produces the locale's alternative representation. +
'D'Equivalent to %m/%d/%y, e.g. "11/12/55".
'e' + The day of month as a decimal number. If the result is a single decimal + digit, it is prefixed with a space. The modified command %Oe + produces the locale's alternative representation. +
'F'Equivalent to %Y-%m-%d, e.g. "1955-11-12".
'g' + The last two decimal digits of the ISO week-based year. If the result is a + single digit it is prefixed by 0. +
'G' + The ISO week-based year as a decimal number. If the result is less than + four digits it is left-padded with 0 to four digits. +
'h'Equivalent to %b, e.g. "Nov".
'H' + The hour (24-hour clock) as a decimal number. If the result is a single + digit, it is prefixed with 0. The modified command %OH + produces the locale's alternative representation. +
'I' + The hour (12-hour clock) as a decimal number. If the result is a single + digit, it is prefixed with 0. The modified command %OI + produces the locale's alternative representation. +
'j' + If the type being formatted is a specialization of duration, the decimal + number of days without padding. Otherwise, the day of the year as a decimal + number. Jan 1 is 001. If the result is less than three digits, it is + left-padded with 0 to three digits. +
'm' + The month as a decimal number. Jan is 01. If the result is a single digit, + it is prefixed with 0. The modified command %Om produces the + locale's alternative representation. +
'M' + The minute as a decimal number. If the result is a single digit, it + is prefixed with 0. The modified command %OM produces the + locale's alternative representation. +
'n'A new-line character.
'p'The AM/PM designations associated with a 12-hour clock.
'q'The duration's unit suffix.
'Q' + The duration's numeric value (as if extracted via .count()). +
'r'The 12-hour clock time, e.g. "10:04:00 PM".
'R'Equivalent to %H:%M, e.g. "22:04".
'S' + Seconds as a decimal number. If the number of seconds is less than 10, the + result is prefixed with 0. If the precision of the input cannot be exactly + represented with seconds, then the format is a decimal floating-point number + with a fixed format and a precision matching that of the precision of the + input (or to a microseconds precision if the conversion to floating-point + decimal seconds cannot be made within 18 fractional digits). The character + for the decimal point is localized according to the locale. The modified + command %OS produces the locale's alternative representation. +
't'A horizontal-tab character.
'T'Equivalent to %H:%M:%S.
'u' + The ISO weekday as a decimal number (1-7), where Monday is 1. The modified + command %Ou produces the locale's alternative representation. +
'U' + The week number of the year as a decimal number. The first Sunday of the + year is the first day of week 01. Days of the same year prior to that are + in week 00. If the result is a single digit, it is prefixed with 0. + The modified command %OU produces the locale's alternative + representation. +
'V' + The ISO week-based week number as a decimal number. If the result is a + single digit, it is prefixed with 0. The modified command %OV + produces the locale's alternative representation. +
'w' + The weekday as a decimal number (0-6), where Sunday is 0. The modified + command %Ow produces the locale's alternative representation. +
'W' + The week number of the year as a decimal number. The first Monday of the + year is the first day of week 01. Days of the same year prior to that are + in week 00. If the result is a single digit, it is prefixed with 0. + The modified command %OW produces the locale's alternative + representation. +
'x' + The date representation, e.g. "11/12/55". The modified command + %Ex produces the locale's alternate date representation. +
'X' + The time representation, e.g. "10:04:00". The modified command + %EX produces the locale's alternate time representation. +
'y' + The last two decimal digits of the year. If the result is a single digit + it is prefixed by 0. The modified command %Oy produces the + locale's alternative representation. The modified command %Ey + produces the locale's alternative representation of offset from + %EC (year only). +
'Y' + The year as a decimal number. If the result is less than four digits it is + left-padded with 0 to four digits. The modified command %EY + produces the locale's alternative full year representation. +
'z' + The offset from UTC in the ISO 8601:2004 format. For example -0430 refers + to 4 hours 30 minutes behind UTC. If the offset is zero, +0000 is used. + The modified commands %Ez and %Oz insert a + : between the hours and minutes: -04:30. If the offset + information is not available, an exception of type + format_error is thrown. +
'Z' + The time zone abbreviation. If the time zone abbreviation is not available, + an exception of type format_error is thrown. +
'%'A % character.
+ +Specifiers that have a calendaric component such as `'d'` (the day of month) +are valid only for `std::tm` and time points but not durations. + +The available padding modifiers (*padding_modifier*) are: + +| Type | Meaning | +|-------|-----------------------------------------| +| `'-'` | Pad a numeric result with spaces. | +| `'_'` | Do not pad a numeric result string. | +| `'0'` | Pad a numeric result string with zeros. | + +These modifiers are only supported for the `'H'`, `'I'`, `'M'`, `'S'`, `'U'`, +`'V'` and `'W'` presentation types. + +## Range Format Specifications + +Format specifications for range types have the following syntax: + +
range_format_spec ::= ["n"][range_type][range_underlying_spec]
+
+ +The `'n'` option formats the range without the opening and closing brackets. + +The available presentation types for `range_type` are: + +| Type | Meaning | +|--------|------------------------------------------------------------| +| none | Default format. | +| `'s'` | String format. The range is formatted as a string. | +| `'?⁠s'` | Debug format. The range is formatted as an escaped string. | + +If `range_type` is `'s'` or `'?s'`, the range element type must be a character +type. The `'n'` option and `range_underlying_spec` are mutually exclusive with +`'s'` and `'?s'`. + +The `range_underlying_spec` is parsed based on the formatter of the range's +element type. + +By default, a range of characters or strings is printed escaped and quoted. +But if any `range_underlying_spec` is provided (even if it is empty), then the +characters or strings are printed according to the provided specification. + +Examples: + +```c++ +fmt::print("{}", std::vector{10, 20, 30}); +// Output: [10, 20, 30] +fmt::print("{::#x}", std::vector{10, 20, 30}); +// Output: [0xa, 0x14, 0x1e] +fmt::print("{}", std::vector{'h', 'e', 'l', 'l', 'o'}); +// Output: ['h', 'e', 'l', 'l', 'o'] +fmt::print("{:n}", std::vector{'h', 'e', 'l', 'l', 'o'}); +// Output: 'h', 'e', 'l', 'l', 'o' +fmt::print("{:s}", std::vector{'h', 'e', 'l', 'l', 'o'}); +// Output: "hello" +fmt::print("{:?s}", std::vector{'h', 'e', 'l', 'l', 'o', '\n'}); +// Output: "hello\n" +fmt::print("{::}", std::vector{'h', 'e', 'l', 'l', 'o'}); +// Output: [h, e, l, l, o] +fmt::print("{::d}", std::vector{'h', 'e', 'l', 'l', 'o'}); +// Output: [104, 101, 108, 108, 111] +``` + +## Format Examples + +This section contains examples of the format syntax and comparison with +the printf formatting. + +In most of the cases the syntax is similar to the printf formatting, +with the addition of the `{}` and with `:` used instead of `%`. For +example, `"%03.2f"` can be translated to `"{:03.2f}"`. + +The new format syntax also supports new and different options, shown in +the following examples. + +Accessing arguments by position: + +```c++ +fmt::format("{0}, {1}, {2}", 'a', 'b', 'c'); +// Result: "a, b, c" +fmt::format("{}, {}, {}", 'a', 'b', 'c'); +// Result: "a, b, c" +fmt::format("{2}, {1}, {0}", 'a', 'b', 'c'); +// Result: "c, b, a" +fmt::format("{0}{1}{0}", "abra", "cad"); // arguments' indices can be repeated +// Result: "abracadabra" +``` + +Aligning the text and specifying a width: + +```c++ +fmt::format("{:<30}", "left aligned"); +// Result: "left aligned " +fmt::format("{:>30}", "right aligned"); +// Result: " right aligned" +fmt::format("{:^30}", "centered"); +// Result: " centered " +fmt::format("{:*^30}", "centered"); // use '*' as a fill char +// Result: "***********centered***********" +``` + +Dynamic width: + +```c++ +fmt::format("{:<{}}", "left aligned", 30); +// Result: "left aligned " +``` + +Dynamic precision: + +```c++ +fmt::format("{:.{}f}", 3.14, 1); +// Result: "3.1" +``` + +Replacing `%+f`, `%-f`, and `% f` and specifying a sign: + +```c++ +fmt::format("{:+f}; {:+f}", 3.14, -3.14); // show it always +// Result: "+3.140000; -3.140000" +fmt::format("{: f}; {: f}", 3.14, -3.14); // show a space for positive numbers +// Result: " 3.140000; -3.140000" +fmt::format("{:-f}; {:-f}", 3.14, -3.14); // show only the minus -- same as '{:f}; {:f}' +// Result: "3.140000; -3.140000" +``` + +Replacing `%x` and `%o` and converting the value to different bases: + +```c++ +fmt::format("int: {0:d}; hex: {0:x}; oct: {0:o}; bin: {0:b}", 42); +// Result: "int: 42; hex: 2a; oct: 52; bin: 101010" +// with 0x or 0 or 0b as prefix: +fmt::format("int: {0:d}; hex: {0:#x}; oct: {0:#o}; bin: {0:#b}", 42); +// Result: "int: 42; hex: 0x2a; oct: 052; bin: 0b101010" +``` + +Padded hex byte with prefix and always prints both hex characters: + +```c++ +fmt::format("{:#04x}", 0); +// Result: "0x00" +``` + +Box drawing using Unicode fill: + +```c++ +fmt::print( + "┌{0:─^{2}}┐\n" + "│{1: ^{2}}│\n" + "└{0:─^{2}}┘\n", "", "Hello, world!", 20); +``` + +prints: + +``` +┌────────────────────┐ +│ Hello, world! │ +└────────────────────┘ +``` + +Using type-specific formatting: + +```c++ +#include + +auto t = tm(); +t.tm_year = 2010 - 1900; +t.tm_mon = 7; +t.tm_mday = 4; +t.tm_hour = 12; +t.tm_min = 15; +t.tm_sec = 58; +fmt::print("{:%Y-%m-%d %H:%M:%S}", t); +// Prints: 2010-08-04 12:15:58 +``` + +Using the comma as a thousands separator: + +```c++ +#include + +auto s = fmt::format(std::locale("en_US.UTF-8"), "{:L}", 1234567890); +// s == "1,234,567,890" +``` diff --git a/Submodules/fmt/include/fmt/args.h b/Submodules/fmt/include/fmt/args.h new file mode 100644 index 0000000..31a60e8 --- /dev/null +++ b/Submodules/fmt/include/fmt/args.h @@ -0,0 +1,228 @@ +// Formatting library for C++ - dynamic argument lists +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_ARGS_H_ +#define FMT_ARGS_H_ + +#ifndef FMT_MODULE +# include // std::reference_wrapper +# include // std::unique_ptr +# include +#endif + +#include "format.h" // std_string_view + +FMT_BEGIN_NAMESPACE + +namespace detail { + +template struct is_reference_wrapper : std::false_type {}; +template +struct is_reference_wrapper> : std::true_type {}; + +template auto unwrap(const T& v) -> const T& { return v; } +template +auto unwrap(const std::reference_wrapper& v) -> const T& { + return static_cast(v); +} + +// node is defined outside dynamic_arg_list to workaround a C2504 bug in MSVC +// 2022 (v17.10.0). +// +// Workaround for clang's -Wweak-vtables. Unlike for regular classes, for +// templates it doesn't complain about inability to deduce single translation +// unit for placing vtable. So node is made a fake template. +template struct node { + virtual ~node() = default; + std::unique_ptr> next; +}; + +class dynamic_arg_list { + template struct typed_node : node<> { + T value; + + template + FMT_CONSTEXPR typed_node(const Arg& arg) : value(arg) {} + + template + FMT_CONSTEXPR typed_node(const basic_string_view& arg) + : value(arg.data(), arg.size()) {} + }; + + std::unique_ptr> head_; + + public: + template auto push(const Arg& arg) -> const T& { + auto new_node = std::unique_ptr>(new typed_node(arg)); + auto& value = new_node->value; + new_node->next = std::move(head_); + head_ = std::move(new_node); + return value; + } +}; +} // namespace detail + +/** + * A dynamic list of formatting arguments with storage. + * + * It can be implicitly converted into `fmt::basic_format_args` for passing + * into type-erased formatting functions such as `fmt::vformat`. + */ +template +class dynamic_format_arg_store +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 + // Workaround a GCC template argument substitution bug. + : public basic_format_args +#endif +{ + private: + using char_type = typename Context::char_type; + + template struct need_copy { + static constexpr detail::type mapped_type = + detail::mapped_type_constant::value; + + enum { + value = !(detail::is_reference_wrapper::value || + std::is_same>::value || + std::is_same>::value || + (mapped_type != detail::type::cstring_type && + mapped_type != detail::type::string_type && + mapped_type != detail::type::custom_type)) + }; + }; + + template + using stored_type = conditional_t< + std::is_convertible>::value && + !detail::is_reference_wrapper::value, + std::basic_string, T>; + + // Storage of basic_format_arg must be contiguous. + std::vector> data_; + std::vector> named_info_; + + // Storage of arguments not fitting into basic_format_arg must grow + // without relocation because items in data_ refer to it. + detail::dynamic_arg_list dynamic_args_; + + friend class basic_format_args; + + auto get_types() const -> unsigned long long { + return detail::is_unpacked_bit | data_.size() | + (named_info_.empty() + ? 0ULL + : static_cast(detail::has_named_args_bit)); + } + + auto data() const -> const basic_format_arg* { + return named_info_.empty() ? data_.data() : data_.data() + 1; + } + + template void emplace_arg(const T& arg) { + data_.emplace_back(detail::make_arg(arg)); + } + + template + void emplace_arg(const detail::named_arg& arg) { + if (named_info_.empty()) { + constexpr const detail::named_arg_info* zero_ptr{nullptr}; + data_.insert(data_.begin(), {zero_ptr, 0}); + } + data_.emplace_back(detail::make_arg(detail::unwrap(arg.value))); + auto pop_one = [](std::vector>* data) { + data->pop_back(); + }; + std::unique_ptr>, decltype(pop_one)> + guard{&data_, pop_one}; + named_info_.push_back({arg.name, static_cast(data_.size() - 2u)}); + data_[0].value_.named_args = {named_info_.data(), named_info_.size()}; + guard.release(); + } + + public: + constexpr dynamic_format_arg_store() = default; + + /** + * Adds an argument into the dynamic store for later passing to a formatting + * function. + * + * Note that custom types and string types (but not string views) are copied + * into the store dynamically allocating memory if necessary. + * + * **Example**: + * + * fmt::dynamic_format_arg_store store; + * store.push_back(42); + * store.push_back("abc"); + * store.push_back(1.5f); + * std::string result = fmt::vformat("{} and {} and {}", store); + */ + template void push_back(const T& arg) { + if (detail::const_check(need_copy::value)) + emplace_arg(dynamic_args_.push>(arg)); + else + emplace_arg(detail::unwrap(arg)); + } + + /** + * Adds a reference to the argument into the dynamic store for later passing + * to a formatting function. + * + * **Example**: + * + * fmt::dynamic_format_arg_store store; + * char band[] = "Rolling Stones"; + * store.push_back(std::cref(band)); + * band[9] = 'c'; // Changing str affects the output. + * std::string result = fmt::vformat("{}", store); + * // result == "Rolling Scones" + */ + template void push_back(std::reference_wrapper arg) { + static_assert( + need_copy::value, + "objects of built-in types and string views are always copied"); + emplace_arg(arg.get()); + } + + /** + * Adds named argument into the dynamic store for later passing to a + * formatting function. `std::reference_wrapper` is supported to avoid + * copying of the argument. The name is always copied into the store. + */ + template + void push_back(const detail::named_arg& arg) { + const char_type* arg_name = + dynamic_args_.push>(arg.name).c_str(); + if (detail::const_check(need_copy::value)) { + emplace_arg( + fmt::arg(arg_name, dynamic_args_.push>(arg.value))); + } else { + emplace_arg(fmt::arg(arg_name, arg.value)); + } + } + + /// Erase all elements from the store. + void clear() { + data_.clear(); + named_info_.clear(); + dynamic_args_ = detail::dynamic_arg_list(); + } + + /// Reserves space to store at least `new_cap` arguments including + /// `new_cap_named` named arguments. + void reserve(size_t new_cap, size_t new_cap_named) { + FMT_ASSERT(new_cap >= new_cap_named, + "Set of arguments includes set of named arguments"); + data_.reserve(new_cap); + named_info_.reserve(new_cap_named); + } +}; + +FMT_END_NAMESPACE + +#endif // FMT_ARGS_H_ diff --git a/Submodules/fmt/include/fmt/base.h b/Submodules/fmt/include/fmt/base.h new file mode 100644 index 0000000..6276494 --- /dev/null +++ b/Submodules/fmt/include/fmt/base.h @@ -0,0 +1,3077 @@ +// Formatting library for C++ - the base API for char/UTF-8 +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_BASE_H_ +#define FMT_BASE_H_ + +#if defined(FMT_IMPORT_STD) && !defined(FMT_MODULE) +# define FMT_MODULE +#endif + +#ifndef FMT_MODULE +# include // CHAR_BIT +# include // FILE +# include // strlen + +// is also included transitively from . +# include // std::byte +# include // std::enable_if +#endif + +// The fmt library version in the form major * 10000 + minor * 100 + patch. +#define FMT_VERSION 110002 + +// Detect compiler versions. +#if defined(__clang__) && !defined(__ibmxl__) +# define FMT_CLANG_VERSION (__clang_major__ * 100 + __clang_minor__) +#else +# define FMT_CLANG_VERSION 0 +#endif +#if defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER) +# define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) +#else +# define FMT_GCC_VERSION 0 +#endif +#if defined(__ICL) +# define FMT_ICC_VERSION __ICL +#elif defined(__INTEL_COMPILER) +# define FMT_ICC_VERSION __INTEL_COMPILER +#else +# define FMT_ICC_VERSION 0 +#endif +#if defined(_MSC_VER) +# define FMT_MSC_VERSION _MSC_VER +#else +# define FMT_MSC_VERSION 0 +#endif + +// Detect standard library versions. +#ifdef _GLIBCXX_RELEASE +# define FMT_GLIBCXX_RELEASE _GLIBCXX_RELEASE +#else +# define FMT_GLIBCXX_RELEASE 0 +#endif +#ifdef _LIBCPP_VERSION +# define FMT_LIBCPP_VERSION _LIBCPP_VERSION +#else +# define FMT_LIBCPP_VERSION 0 +#endif + +#ifdef _MSVC_LANG +# define FMT_CPLUSPLUS _MSVC_LANG +#else +# define FMT_CPLUSPLUS __cplusplus +#endif + +// Detect __has_*. +#ifdef __has_feature +# define FMT_HAS_FEATURE(x) __has_feature(x) +#else +# define FMT_HAS_FEATURE(x) 0 +#endif +#ifdef __has_include +# define FMT_HAS_INCLUDE(x) __has_include(x) +#else +# define FMT_HAS_INCLUDE(x) 0 +#endif +#ifdef __has_cpp_attribute +# define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x) +#else +# define FMT_HAS_CPP_ATTRIBUTE(x) 0 +#endif + +#define FMT_HAS_CPP14_ATTRIBUTE(attribute) \ + (FMT_CPLUSPLUS >= 201402L && FMT_HAS_CPP_ATTRIBUTE(attribute)) + +#define FMT_HAS_CPP17_ATTRIBUTE(attribute) \ + (FMT_CPLUSPLUS >= 201703L && FMT_HAS_CPP_ATTRIBUTE(attribute)) + +// Detect C++14 relaxed constexpr. +#ifdef FMT_USE_CONSTEXPR +// Use the provided definition. +#elif FMT_GCC_VERSION >= 600 && FMT_CPLUSPLUS >= 201402L +// GCC only allows throw in constexpr since version 6: +// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67371. +# define FMT_USE_CONSTEXPR 1 +#elif FMT_ICC_VERSION +# define FMT_USE_CONSTEXPR 0 // https://github.com/fmtlib/fmt/issues/1628 +#elif FMT_HAS_FEATURE(cxx_relaxed_constexpr) || FMT_MSC_VERSION >= 1912 +# define FMT_USE_CONSTEXPR 1 +#else +# define FMT_USE_CONSTEXPR 0 +#endif +#if FMT_USE_CONSTEXPR +# define FMT_CONSTEXPR constexpr +#else +# define FMT_CONSTEXPR +#endif + +// Detect consteval, C++20 constexpr extensions and std::is_constant_evaluated. +#if !defined(__cpp_lib_is_constant_evaluated) +# define FMT_USE_CONSTEVAL 0 +#elif FMT_CPLUSPLUS < 201709L +# define FMT_USE_CONSTEVAL 0 +#elif FMT_GLIBCXX_RELEASE && FMT_GLIBCXX_RELEASE < 10 +# define FMT_USE_CONSTEVAL 0 +#elif FMT_LIBCPP_VERSION && FMT_LIBCPP_VERSION < 10000 +# define FMT_USE_CONSTEVAL 0 +#elif defined(__apple_build_version__) && __apple_build_version__ < 14000029L +# define FMT_USE_CONSTEVAL 0 // consteval is broken in Apple clang < 14. +#elif FMT_MSC_VERSION && FMT_MSC_VERSION < 1929 +# define FMT_USE_CONSTEVAL 0 // consteval is broken in MSVC VS2019 < 16.10. +#elif defined(__cpp_consteval) +# define FMT_USE_CONSTEVAL 1 +#elif FMT_GCC_VERSION >= 1002 || FMT_CLANG_VERSION >= 1101 +# define FMT_USE_CONSTEVAL 1 +#else +# define FMT_USE_CONSTEVAL 0 +#endif +#if FMT_USE_CONSTEVAL +# define FMT_CONSTEVAL consteval +# define FMT_CONSTEXPR20 constexpr +#else +# define FMT_CONSTEVAL +# define FMT_CONSTEXPR20 +#endif + +#if defined(FMT_USE_NONTYPE_TEMPLATE_ARGS) +// Use the provided definition. +#elif defined(__NVCOMPILER) +# define FMT_USE_NONTYPE_TEMPLATE_ARGS 0 +#elif FMT_GCC_VERSION >= 903 && FMT_CPLUSPLUS >= 201709L +# define FMT_USE_NONTYPE_TEMPLATE_ARGS 1 +#elif defined(__cpp_nontype_template_args) && \ + __cpp_nontype_template_args >= 201911L +# define FMT_USE_NONTYPE_TEMPLATE_ARGS 1 +#elif FMT_CLANG_VERSION >= 1200 && FMT_CPLUSPLUS >= 202002L +# define FMT_USE_NONTYPE_TEMPLATE_ARGS 1 +#else +# define FMT_USE_NONTYPE_TEMPLATE_ARGS 0 +#endif + +#ifdef FMT_USE_CONCEPTS +// Use the provided definition. +#elif defined(__cpp_concepts) +# define FMT_USE_CONCEPTS 1 +#else +# define FMT_USE_CONCEPTS 0 +#endif + +// Check if exceptions are disabled. +#ifdef FMT_EXCEPTIONS +// Use the provided definition. +#elif defined(__GNUC__) && !defined(__EXCEPTIONS) +# define FMT_EXCEPTIONS 0 +#elif FMT_MSC_VERSION && !_HAS_EXCEPTIONS +# define FMT_EXCEPTIONS 0 +#else +# define FMT_EXCEPTIONS 1 +#endif +#if FMT_EXCEPTIONS +# define FMT_TRY try +# define FMT_CATCH(x) catch (x) +#else +# define FMT_TRY if (true) +# define FMT_CATCH(x) if (false) +#endif + +#if FMT_HAS_CPP17_ATTRIBUTE(fallthrough) +# define FMT_FALLTHROUGH [[fallthrough]] +#elif defined(__clang__) +# define FMT_FALLTHROUGH [[clang::fallthrough]] +#elif FMT_GCC_VERSION >= 700 && \ + (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= 520) +# define FMT_FALLTHROUGH [[gnu::fallthrough]] +#else +# define FMT_FALLTHROUGH +#endif + +// Disable [[noreturn]] on MSVC/NVCC because of bogus unreachable code warnings. +#if FMT_HAS_CPP_ATTRIBUTE(noreturn) && !FMT_MSC_VERSION && !defined(__NVCC__) +# define FMT_NORETURN [[noreturn]] +#else +# define FMT_NORETURN +#endif + +#ifndef FMT_NODISCARD +# if FMT_HAS_CPP17_ATTRIBUTE(nodiscard) +# define FMT_NODISCARD [[nodiscard]] +# else +# define FMT_NODISCARD +# endif +#endif + +#ifdef FMT_DEPRECATED +// Use the provided definition. +#elif FMT_HAS_CPP14_ATTRIBUTE(deprecated) +# define FMT_DEPRECATED [[deprecated]] +#else +# define FMT_DEPRECATED /* deprecated */ +#endif + +#ifdef FMT_INLINE +// Use the provided definition. +#elif FMT_GCC_VERSION || FMT_CLANG_VERSION +# define FMT_ALWAYS_INLINE inline __attribute__((always_inline)) +#else +# define FMT_ALWAYS_INLINE inline +#endif +// A version of FMT_INLINE to prevent code bloat in debug mode. +#ifdef NDEBUG +# define FMT_INLINE FMT_ALWAYS_INLINE +#else +# define FMT_INLINE inline +#endif + +#if FMT_GCC_VERSION || FMT_CLANG_VERSION +# define FMT_VISIBILITY(value) __attribute__((visibility(value))) +#else +# define FMT_VISIBILITY(value) +#endif + +#ifndef FMT_GCC_PRAGMA +// Workaround a _Pragma bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59884 +// and an nvhpc warning: https://github.com/fmtlib/fmt/pull/2582. +# if FMT_GCC_VERSION >= 504 && !defined(__NVCOMPILER) +# define FMT_GCC_PRAGMA(arg) _Pragma(arg) +# else +# define FMT_GCC_PRAGMA(arg) +# endif +#endif + +// GCC < 5 requires this-> in decltype. +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 500 +# define FMT_DECLTYPE_THIS this-> +#else +# define FMT_DECLTYPE_THIS +#endif + +#if FMT_MSC_VERSION +# define FMT_MSC_WARNING(...) __pragma(warning(__VA_ARGS__)) +# define FMT_UNCHECKED_ITERATOR(It) \ + using _Unchecked_type = It // Mark iterator as checked. +#else +# define FMT_MSC_WARNING(...) +# define FMT_UNCHECKED_ITERATOR(It) using unchecked_type = It +#endif + +#ifndef FMT_BEGIN_NAMESPACE +# define FMT_BEGIN_NAMESPACE \ + namespace fmt { \ + inline namespace v11 { +# define FMT_END_NAMESPACE \ + } \ + } +#endif + +#ifndef FMT_EXPORT +# define FMT_EXPORT +# define FMT_BEGIN_EXPORT +# define FMT_END_EXPORT +#endif + +#if !defined(FMT_HEADER_ONLY) && defined(_WIN32) +# if defined(FMT_LIB_EXPORT) +# define FMT_API __declspec(dllexport) +# elif defined(FMT_SHARED) +# define FMT_API __declspec(dllimport) +# endif +#elif defined(FMT_LIB_EXPORT) || defined(FMT_SHARED) +# define FMT_API FMT_VISIBILITY("default") +#endif +#ifndef FMT_API +# define FMT_API +#endif + +#ifndef FMT_UNICODE +# define FMT_UNICODE 1 +#endif + +// Check if rtti is available. +#ifndef FMT_USE_RTTI +// __RTTI is for EDG compilers. _CPPRTTI is for MSVC. +# if defined(__GXX_RTTI) || FMT_HAS_FEATURE(cxx_rtti) || defined(_CPPRTTI) || \ + defined(__INTEL_RTTI__) || defined(__RTTI) +# define FMT_USE_RTTI 1 +# else +# define FMT_USE_RTTI 0 +# endif +#endif + +#define FMT_FWD(...) static_cast(__VA_ARGS__) + +// Enable minimal optimizations for more compact code in debug mode. +FMT_GCC_PRAGMA("GCC push_options") +#if !defined(__OPTIMIZE__) && !defined(__CUDACC__) +FMT_GCC_PRAGMA("GCC optimize(\"Og\")") +#endif + +FMT_BEGIN_NAMESPACE + +// Implementations of enable_if_t and other metafunctions for older systems. +template +using enable_if_t = typename std::enable_if::type; +template +using conditional_t = typename std::conditional::type; +template using bool_constant = std::integral_constant; +template +using remove_reference_t = typename std::remove_reference::type; +template +using remove_const_t = typename std::remove_const::type; +template +using remove_cvref_t = typename std::remove_cv>::type; +template struct type_identity { + using type = T; +}; +template using type_identity_t = typename type_identity::type; +template +using make_unsigned_t = typename std::make_unsigned::type; +template +using underlying_t = typename std::underlying_type::type; + +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 500 +// A workaround for gcc 4.8 to make void_t work in a SFINAE context. +template struct void_t_impl { + using type = void; +}; +template using void_t = typename void_t_impl::type; +#else +template using void_t = void; +#endif + +struct monostate { + constexpr monostate() {} +}; + +// An enable_if helper to be used in template parameters which results in much +// shorter symbols: https://godbolt.org/z/sWw4vP. Extra parentheses are needed +// to workaround a bug in MSVC 2019 (see #1140 and #1186). +#ifdef FMT_DOC +# define FMT_ENABLE_IF(...) +#else +# define FMT_ENABLE_IF(...) fmt::enable_if_t<(__VA_ARGS__), int> = 0 +#endif + +// This is defined in base.h instead of format.h to avoid injecting in std. +// It is a template to avoid undesirable implicit conversions to std::byte. +#ifdef __cpp_lib_byte +template ::value)> +inline auto format_as(T b) -> unsigned char { + return static_cast(b); +} +#endif + +namespace detail { +// Suppresses "unused variable" warnings with the method described in +// https://herbsutter.com/2009/10/18/mailbag-shutting-up-compiler-warnings/. +// (void)var does not work on many Intel compilers. +template FMT_CONSTEXPR void ignore_unused(const T&...) {} + +constexpr auto is_constant_evaluated(bool default_value = false) noexcept + -> bool { +// Workaround for incompatibility between libstdc++ consteval-based +// std::is_constant_evaluated() implementation and clang-14: +// https://github.com/fmtlib/fmt/issues/3247. +#if FMT_CPLUSPLUS >= 202002L && FMT_GLIBCXX_RELEASE >= 12 && \ + (FMT_CLANG_VERSION >= 1400 && FMT_CLANG_VERSION < 1500) + ignore_unused(default_value); + return __builtin_is_constant_evaluated(); +#elif defined(__cpp_lib_is_constant_evaluated) + ignore_unused(default_value); + return std::is_constant_evaluated(); +#else + return default_value; +#endif +} + +// Suppresses "conditional expression is constant" warnings. +template constexpr auto const_check(T value) -> T { return value; } + +FMT_NORETURN FMT_API void assert_fail(const char* file, int line, + const char* message); + +#if defined(FMT_ASSERT) +// Use the provided definition. +#elif defined(NDEBUG) +// FMT_ASSERT is not empty to avoid -Wempty-body. +# define FMT_ASSERT(condition, message) \ + fmt::detail::ignore_unused((condition), (message)) +#else +# define FMT_ASSERT(condition, message) \ + ((condition) /* void() fails with -Winvalid-constexpr on clang 4.0.1 */ \ + ? (void)0 \ + : fmt::detail::assert_fail(__FILE__, __LINE__, (message))) +#endif + +#ifdef FMT_USE_INT128 +// Do nothing. +#elif defined(__SIZEOF_INT128__) && !defined(__NVCC__) && \ + !(FMT_CLANG_VERSION && FMT_MSC_VERSION) +# define FMT_USE_INT128 1 +using int128_opt = __int128_t; // An optional native 128-bit integer. +using uint128_opt = __uint128_t; +template inline auto convert_for_visit(T value) -> T { + return value; +} +#else +# define FMT_USE_INT128 0 +#endif +#if !FMT_USE_INT128 +enum class int128_opt {}; +enum class uint128_opt {}; +// Reduce template instantiations. +template auto convert_for_visit(T) -> monostate { return {}; } +#endif + +// Casts a nonnegative integer to unsigned. +template +FMT_CONSTEXPR auto to_unsigned(Int value) -> make_unsigned_t { + FMT_ASSERT(std::is_unsigned::value || value >= 0, "negative value"); + return static_cast>(value); +} + +// A heuristic to detect std::string and std::[experimental::]string_view. +// It is mainly used to avoid dependency on <[experimental/]string_view>. +template +struct is_std_string_like : std::false_type {}; +template +struct is_std_string_like().find_first_of( + typename T::value_type(), 0))>> + : std::is_convertible().data()), + const typename T::value_type*> {}; + +// Returns true iff the literal encoding is UTF-8. +constexpr auto is_utf8_enabled() -> bool { + // Avoid an MSVC sign extension bug: https://github.com/fmtlib/fmt/pull/2297. + using uchar = unsigned char; + return sizeof("\u00A7") == 3 && uchar("\u00A7"[0]) == 0xC2 && + uchar("\u00A7"[1]) == 0xA7; +} +constexpr auto use_utf8() -> bool { + return !FMT_MSC_VERSION || is_utf8_enabled(); +} + +static_assert(!FMT_UNICODE || use_utf8(), + "Unicode support requires compiling with /utf-8"); + +template FMT_CONSTEXPR auto length(const Char* s) -> size_t { + size_t len = 0; + while (*s++) ++len; + return len; +} + +template +FMT_CONSTEXPR auto compare(const Char* s1, const Char* s2, std::size_t n) + -> int { + if (!is_constant_evaluated() && sizeof(Char) == 1) return memcmp(s1, s2, n); + for (; n != 0; ++s1, ++s2, --n) { + if (*s1 < *s2) return -1; + if (*s1 > *s2) return 1; + } + return 0; +} + +namespace adl { +using namespace std; + +template +auto invoke_back_inserter() + -> decltype(back_inserter(std::declval())); +} // namespace adl + +template +struct is_back_insert_iterator : std::false_type {}; + +template +struct is_back_insert_iterator< + It, bool_constant()), + It>::value>> : std::true_type {}; + +// Extracts a reference to the container from *insert_iterator. +template +inline auto get_container(OutputIt it) -> typename OutputIt::container_type& { + struct accessor : OutputIt { + accessor(OutputIt base) : OutputIt(base) {} + using OutputIt::container; + }; + return *accessor(it).container; +} +} // namespace detail + +// Checks whether T is a container with contiguous storage. +template struct is_contiguous : std::false_type {}; + +/** + * An implementation of `std::basic_string_view` for pre-C++17. It provides a + * subset of the API. `fmt::basic_string_view` is used for format strings even + * if `std::basic_string_view` is available to prevent issues when a library is + * compiled with a different `-std` option than the client code (which is not + * recommended). + */ +FMT_EXPORT +template class basic_string_view { + private: + const Char* data_; + size_t size_; + + public: + using value_type = Char; + using iterator = const Char*; + + constexpr basic_string_view() noexcept : data_(nullptr), size_(0) {} + + /// Constructs a string reference object from a C string and a size. + constexpr basic_string_view(const Char* s, size_t count) noexcept + : data_(s), size_(count) {} + + constexpr basic_string_view(std::nullptr_t) = delete; + + /// Constructs a string reference object from a C string. + FMT_CONSTEXPR20 + basic_string_view(const Char* s) + : data_(s), + size_(detail::const_check(std::is_same::value && + !detail::is_constant_evaluated(false)) + ? strlen(reinterpret_cast(s)) + : detail::length(s)) {} + + /// Constructs a string reference from a `std::basic_string` or a + /// `std::basic_string_view` object. + template ::value&& std::is_same< + typename S::value_type, Char>::value)> + FMT_CONSTEXPR basic_string_view(const S& s) noexcept + : data_(s.data()), size_(s.size()) {} + + /// Returns a pointer to the string data. + constexpr auto data() const noexcept -> const Char* { return data_; } + + /// Returns the string size. + constexpr auto size() const noexcept -> size_t { return size_; } + + constexpr auto begin() const noexcept -> iterator { return data_; } + constexpr auto end() const noexcept -> iterator { return data_ + size_; } + + constexpr auto operator[](size_t pos) const noexcept -> const Char& { + return data_[pos]; + } + + FMT_CONSTEXPR void remove_prefix(size_t n) noexcept { + data_ += n; + size_ -= n; + } + + FMT_CONSTEXPR auto starts_with(basic_string_view sv) const noexcept + -> bool { + return size_ >= sv.size_ && detail::compare(data_, sv.data_, sv.size_) == 0; + } + FMT_CONSTEXPR auto starts_with(Char c) const noexcept -> bool { + return size_ >= 1 && *data_ == c; + } + FMT_CONSTEXPR auto starts_with(const Char* s) const -> bool { + return starts_with(basic_string_view(s)); + } + + // Lexicographically compare this string reference to other. + FMT_CONSTEXPR auto compare(basic_string_view other) const -> int { + size_t str_size = size_ < other.size_ ? size_ : other.size_; + int result = detail::compare(data_, other.data_, str_size); + if (result == 0) + result = size_ == other.size_ ? 0 : (size_ < other.size_ ? -1 : 1); + return result; + } + + FMT_CONSTEXPR friend auto operator==(basic_string_view lhs, + basic_string_view rhs) -> bool { + return lhs.compare(rhs) == 0; + } + friend auto operator!=(basic_string_view lhs, basic_string_view rhs) -> bool { + return lhs.compare(rhs) != 0; + } + friend auto operator<(basic_string_view lhs, basic_string_view rhs) -> bool { + return lhs.compare(rhs) < 0; + } + friend auto operator<=(basic_string_view lhs, basic_string_view rhs) -> bool { + return lhs.compare(rhs) <= 0; + } + friend auto operator>(basic_string_view lhs, basic_string_view rhs) -> bool { + return lhs.compare(rhs) > 0; + } + friend auto operator>=(basic_string_view lhs, basic_string_view rhs) -> bool { + return lhs.compare(rhs) >= 0; + } +}; + +FMT_EXPORT +using string_view = basic_string_view; + +/// Specifies if `T` is a character type. Can be specialized by users. +FMT_EXPORT +template struct is_char : std::false_type {}; +template <> struct is_char : std::true_type {}; + +namespace detail { + +// Constructs fmt::basic_string_view from types implicitly convertible +// to it, deducing Char. Explicitly convertible types such as the ones returned +// from FMT_STRING are intentionally excluded. +template ::value)> +constexpr auto to_string_view(const Char* s) -> basic_string_view { + return s; +} +template ::value)> +constexpr auto to_string_view(const T& s) + -> basic_string_view { + return s; +} +template +constexpr auto to_string_view(basic_string_view s) + -> basic_string_view { + return s; +} + +template +struct has_to_string_view : std::false_type {}; +// detail:: is intentional since to_string_view is not an extension point. +template +struct has_to_string_view< + T, void_t()))>> + : std::true_type {}; + +template struct string_literal { + static constexpr Char value[sizeof...(C)] = {C...}; + constexpr operator basic_string_view() const { + return {value, sizeof...(C)}; + } +}; +#if FMT_CPLUSPLUS < 201703L +template +constexpr Char string_literal::value[sizeof...(C)]; +#endif + +enum class type { + none_type, + // Integer types should go first, + int_type, + uint_type, + long_long_type, + ulong_long_type, + int128_type, + uint128_type, + bool_type, + char_type, + last_integer_type = char_type, + // followed by floating-point types. + float_type, + double_type, + long_double_type, + last_numeric_type = long_double_type, + cstring_type, + string_type, + pointer_type, + custom_type +}; + +// Maps core type T to the corresponding type enum constant. +template +struct type_constant : std::integral_constant {}; + +#define FMT_TYPE_CONSTANT(Type, constant) \ + template \ + struct type_constant \ + : std::integral_constant {} + +FMT_TYPE_CONSTANT(int, int_type); +FMT_TYPE_CONSTANT(unsigned, uint_type); +FMT_TYPE_CONSTANT(long long, long_long_type); +FMT_TYPE_CONSTANT(unsigned long long, ulong_long_type); +FMT_TYPE_CONSTANT(int128_opt, int128_type); +FMT_TYPE_CONSTANT(uint128_opt, uint128_type); +FMT_TYPE_CONSTANT(bool, bool_type); +FMT_TYPE_CONSTANT(Char, char_type); +FMT_TYPE_CONSTANT(float, float_type); +FMT_TYPE_CONSTANT(double, double_type); +FMT_TYPE_CONSTANT(long double, long_double_type); +FMT_TYPE_CONSTANT(const Char*, cstring_type); +FMT_TYPE_CONSTANT(basic_string_view, string_type); +FMT_TYPE_CONSTANT(const void*, pointer_type); + +constexpr auto is_integral_type(type t) -> bool { + return t > type::none_type && t <= type::last_integer_type; +} +constexpr auto is_arithmetic_type(type t) -> bool { + return t > type::none_type && t <= type::last_numeric_type; +} + +constexpr auto set(type rhs) -> int { return 1 << static_cast(rhs); } +constexpr auto in(type t, int set) -> bool { + return ((set >> static_cast(t)) & 1) != 0; +} + +// Bitsets of types. +enum { + sint_set = + set(type::int_type) | set(type::long_long_type) | set(type::int128_type), + uint_set = set(type::uint_type) | set(type::ulong_long_type) | + set(type::uint128_type), + bool_set = set(type::bool_type), + char_set = set(type::char_type), + float_set = set(type::float_type) | set(type::double_type) | + set(type::long_double_type), + string_set = set(type::string_type), + cstring_set = set(type::cstring_type), + pointer_set = set(type::pointer_type) +}; +} // namespace detail + +/// Reports a format error at compile time or, via a `format_error` exception, +/// at runtime. +// This function is intentionally not constexpr to give a compile-time error. +FMT_NORETURN FMT_API void report_error(const char* message); + +FMT_DEPRECATED FMT_NORETURN inline void throw_format_error( + const char* message) { + report_error(message); +} + +/// String's character (code unit) type. +template ()))> +using char_t = typename V::value_type; + +/** + * Parsing context consisting of a format string range being parsed and an + * argument counter for automatic indexing. + * You can use the `format_parse_context` type alias for `char` instead. + */ +FMT_EXPORT +template class basic_format_parse_context { + private: + basic_string_view format_str_; + int next_arg_id_; + + FMT_CONSTEXPR void do_check_arg_id(int id); + + public: + using char_type = Char; + using iterator = const Char*; + + explicit constexpr basic_format_parse_context( + basic_string_view format_str, int next_arg_id = 0) + : format_str_(format_str), next_arg_id_(next_arg_id) {} + + /// Returns an iterator to the beginning of the format string range being + /// parsed. + constexpr auto begin() const noexcept -> iterator { + return format_str_.begin(); + } + + /// Returns an iterator past the end of the format string range being parsed. + constexpr auto end() const noexcept -> iterator { return format_str_.end(); } + + /// Advances the begin iterator to `it`. + FMT_CONSTEXPR void advance_to(iterator it) { + format_str_.remove_prefix(detail::to_unsigned(it - begin())); + } + + /// Reports an error if using the manual argument indexing; otherwise returns + /// the next argument index and switches to the automatic indexing. + FMT_CONSTEXPR auto next_arg_id() -> int { + if (next_arg_id_ < 0) { + report_error("cannot switch from manual to automatic argument indexing"); + return 0; + } + int id = next_arg_id_++; + do_check_arg_id(id); + return id; + } + + /// Reports an error if using the automatic argument indexing; otherwise + /// switches to the manual indexing. + FMT_CONSTEXPR void check_arg_id(int id) { + if (next_arg_id_ > 0) { + report_error("cannot switch from automatic to manual argument indexing"); + return; + } + next_arg_id_ = -1; + do_check_arg_id(id); + } + FMT_CONSTEXPR void check_arg_id(basic_string_view) { + next_arg_id_ = -1; + } + FMT_CONSTEXPR void check_dynamic_spec(int arg_id); +}; + +FMT_EXPORT +using format_parse_context = basic_format_parse_context; + +namespace detail { +// A parse context with extra data used only in compile-time checks. +template +class compile_parse_context : public basic_format_parse_context { + private: + int num_args_; + const type* types_; + using base = basic_format_parse_context; + + public: + explicit FMT_CONSTEXPR compile_parse_context( + basic_string_view format_str, int num_args, const type* types, + int next_arg_id = 0) + : base(format_str, next_arg_id), num_args_(num_args), types_(types) {} + + constexpr auto num_args() const -> int { return num_args_; } + constexpr auto arg_type(int id) const -> type { return types_[id]; } + + FMT_CONSTEXPR auto next_arg_id() -> int { + int id = base::next_arg_id(); + if (id >= num_args_) report_error("argument not found"); + return id; + } + + FMT_CONSTEXPR void check_arg_id(int id) { + base::check_arg_id(id); + if (id >= num_args_) report_error("argument not found"); + } + using base::check_arg_id; + + FMT_CONSTEXPR void check_dynamic_spec(int arg_id) { + detail::ignore_unused(arg_id); + if (arg_id < num_args_ && types_ && !is_integral_type(types_[arg_id])) + report_error("width/precision is not integer"); + } +}; + +/// A contiguous memory buffer with an optional growing ability. It is an +/// internal class and shouldn't be used directly, only via `memory_buffer`. +template class buffer { + private: + T* ptr_; + size_t size_; + size_t capacity_; + + using grow_fun = void (*)(buffer& buf, size_t capacity); + grow_fun grow_; + + protected: + // Don't initialize ptr_ since it is not accessed to save a few cycles. + FMT_MSC_WARNING(suppress : 26495) + FMT_CONSTEXPR20 buffer(grow_fun grow, size_t sz) noexcept + : size_(sz), capacity_(sz), grow_(grow) {} + + constexpr buffer(grow_fun grow, T* p = nullptr, size_t sz = 0, + size_t cap = 0) noexcept + : ptr_(p), size_(sz), capacity_(cap), grow_(grow) {} + + FMT_CONSTEXPR20 ~buffer() = default; + buffer(buffer&&) = default; + + /// Sets the buffer data and capacity. + FMT_CONSTEXPR void set(T* buf_data, size_t buf_capacity) noexcept { + ptr_ = buf_data; + capacity_ = buf_capacity; + } + + public: + using value_type = T; + using const_reference = const T&; + + buffer(const buffer&) = delete; + void operator=(const buffer&) = delete; + + auto begin() noexcept -> T* { return ptr_; } + auto end() noexcept -> T* { return ptr_ + size_; } + + auto begin() const noexcept -> const T* { return ptr_; } + auto end() const noexcept -> const T* { return ptr_ + size_; } + + /// Returns the size of this buffer. + constexpr auto size() const noexcept -> size_t { return size_; } + + /// Returns the capacity of this buffer. + constexpr auto capacity() const noexcept -> size_t { return capacity_; } + + /// Returns a pointer to the buffer data (not null-terminated). + FMT_CONSTEXPR auto data() noexcept -> T* { return ptr_; } + FMT_CONSTEXPR auto data() const noexcept -> const T* { return ptr_; } + + /// Clears this buffer. + void clear() { size_ = 0; } + + // Tries resizing the buffer to contain `count` elements. If T is a POD type + // the new elements may not be initialized. + FMT_CONSTEXPR void try_resize(size_t count) { + try_reserve(count); + size_ = count <= capacity_ ? count : capacity_; + } + + // Tries increasing the buffer capacity to `new_capacity`. It can increase the + // capacity by a smaller amount than requested but guarantees there is space + // for at least one additional element either by increasing the capacity or by + // flushing the buffer if it is full. + FMT_CONSTEXPR void try_reserve(size_t new_capacity) { + if (new_capacity > capacity_) grow_(*this, new_capacity); + } + + FMT_CONSTEXPR void push_back(const T& value) { + try_reserve(size_ + 1); + ptr_[size_++] = value; + } + + /// Appends data to the end of the buffer. + template void append(const U* begin, const U* end) { + while (begin != end) { + auto count = to_unsigned(end - begin); + try_reserve(size_ + count); + auto free_cap = capacity_ - size_; + if (free_cap < count) count = free_cap; + // A loop is faster than memcpy on small sizes. + T* out = ptr_ + size_; + for (size_t i = 0; i < count; ++i) out[i] = begin[i]; + size_ += count; + begin += count; + } + } + + template FMT_CONSTEXPR auto operator[](Idx index) -> T& { + return ptr_[index]; + } + template + FMT_CONSTEXPR auto operator[](Idx index) const -> const T& { + return ptr_[index]; + } +}; + +struct buffer_traits { + explicit buffer_traits(size_t) {} + auto count() const -> size_t { return 0; } + auto limit(size_t size) -> size_t { return size; } +}; + +class fixed_buffer_traits { + private: + size_t count_ = 0; + size_t limit_; + + public: + explicit fixed_buffer_traits(size_t limit) : limit_(limit) {} + auto count() const -> size_t { return count_; } + auto limit(size_t size) -> size_t { + size_t n = limit_ > count_ ? limit_ - count_ : 0; + count_ += size; + return size < n ? size : n; + } +}; + +// A buffer that writes to an output iterator when flushed. +template +class iterator_buffer : public Traits, public buffer { + private: + OutputIt out_; + enum { buffer_size = 256 }; + T data_[buffer_size]; + + static FMT_CONSTEXPR void grow(buffer& buf, size_t) { + if (buf.size() == buffer_size) static_cast(buf).flush(); + } + + void flush() { + auto size = this->size(); + this->clear(); + const T* begin = data_; + const T* end = begin + this->limit(size); + while (begin != end) *out_++ = *begin++; + } + + public: + explicit iterator_buffer(OutputIt out, size_t n = buffer_size) + : Traits(n), buffer(grow, data_, 0, buffer_size), out_(out) {} + iterator_buffer(iterator_buffer&& other) noexcept + : Traits(other), + buffer(grow, data_, 0, buffer_size), + out_(other.out_) {} + ~iterator_buffer() { + // Don't crash if flush fails during unwinding. + FMT_TRY { flush(); } + FMT_CATCH(...) {} + } + + auto out() -> OutputIt { + flush(); + return out_; + } + auto count() const -> size_t { return Traits::count() + this->size(); } +}; + +template +class iterator_buffer : public fixed_buffer_traits, + public buffer { + private: + T* out_; + enum { buffer_size = 256 }; + T data_[buffer_size]; + + static FMT_CONSTEXPR void grow(buffer& buf, size_t) { + if (buf.size() == buf.capacity()) + static_cast(buf).flush(); + } + + void flush() { + size_t n = this->limit(this->size()); + if (this->data() == out_) { + out_ += n; + this->set(data_, buffer_size); + } + this->clear(); + } + + public: + explicit iterator_buffer(T* out, size_t n = buffer_size) + : fixed_buffer_traits(n), buffer(grow, out, 0, n), out_(out) {} + iterator_buffer(iterator_buffer&& other) noexcept + : fixed_buffer_traits(other), + buffer(static_cast(other)), + out_(other.out_) { + if (this->data() != out_) { + this->set(data_, buffer_size); + this->clear(); + } + } + ~iterator_buffer() { flush(); } + + auto out() -> T* { + flush(); + return out_; + } + auto count() const -> size_t { + return fixed_buffer_traits::count() + this->size(); + } +}; + +template class iterator_buffer : public buffer { + public: + explicit iterator_buffer(T* out, size_t = 0) + : buffer([](buffer&, size_t) {}, out, 0, ~size_t()) {} + + auto out() -> T* { return &*this->end(); } +}; + +// A buffer that writes to a container with the contiguous storage. +template +class iterator_buffer< + OutputIt, + enable_if_t::value && + is_contiguous::value, + typename OutputIt::container_type::value_type>> + : public buffer { + private: + using container_type = typename OutputIt::container_type; + using value_type = typename container_type::value_type; + container_type& container_; + + static FMT_CONSTEXPR void grow(buffer& buf, size_t capacity) { + auto& self = static_cast(buf); + self.container_.resize(capacity); + self.set(&self.container_[0], capacity); + } + + public: + explicit iterator_buffer(container_type& c) + : buffer(grow, c.size()), container_(c) {} + explicit iterator_buffer(OutputIt out, size_t = 0) + : iterator_buffer(get_container(out)) {} + + auto out() -> OutputIt { return back_inserter(container_); } +}; + +// A buffer that counts the number of code units written discarding the output. +template class counting_buffer : public buffer { + private: + enum { buffer_size = 256 }; + T data_[buffer_size]; + size_t count_ = 0; + + static FMT_CONSTEXPR void grow(buffer& buf, size_t) { + if (buf.size() != buffer_size) return; + static_cast(buf).count_ += buf.size(); + buf.clear(); + } + + public: + counting_buffer() : buffer(grow, data_, 0, buffer_size) {} + + auto count() -> size_t { return count_ + this->size(); } +}; +} // namespace detail + +template +FMT_CONSTEXPR void basic_format_parse_context::do_check_arg_id(int id) { + // Argument id is only checked at compile-time during parsing because + // formatting has its own validation. + if (detail::is_constant_evaluated() && + (!FMT_GCC_VERSION || FMT_GCC_VERSION >= 1200)) { + using context = detail::compile_parse_context; + if (id >= static_cast(this)->num_args()) + report_error("argument not found"); + } +} + +template +FMT_CONSTEXPR void basic_format_parse_context::check_dynamic_spec( + int arg_id) { + if (detail::is_constant_evaluated() && + (!FMT_GCC_VERSION || FMT_GCC_VERSION >= 1200)) { + using context = detail::compile_parse_context; + static_cast(this)->check_dynamic_spec(arg_id); + } +} + +FMT_EXPORT template class basic_format_arg; +FMT_EXPORT template class basic_format_args; +FMT_EXPORT template class dynamic_format_arg_store; + +// A formatter for objects of type T. +FMT_EXPORT +template +struct formatter { + // A deleted default constructor indicates a disabled formatter. + formatter() = delete; +}; + +// Specifies if T has an enabled formatter specialization. A type can be +// formattable even if it doesn't have a formatter e.g. via a conversion. +template +using has_formatter = + std::is_constructible>; + +// An output iterator that appends to a buffer. It is used instead of +// back_insert_iterator to reduce symbol sizes and avoid dependency. +template class basic_appender { + private: + detail::buffer* buffer_; + + friend auto get_container(basic_appender app) -> detail::buffer& { + return *app.buffer_; + } + + public: + using iterator_category = int; + using value_type = T; + using difference_type = ptrdiff_t; + using pointer = T*; + using reference = T&; + using container_type = detail::buffer; + FMT_UNCHECKED_ITERATOR(basic_appender); + + FMT_CONSTEXPR basic_appender(detail::buffer& buf) : buffer_(&buf) {} + + auto operator=(T c) -> basic_appender& { + buffer_->push_back(c); + return *this; + } + auto operator*() -> basic_appender& { return *this; } + auto operator++() -> basic_appender& { return *this; } + auto operator++(int) -> basic_appender { return *this; } +}; + +using appender = basic_appender; + +namespace detail { +template +struct is_back_insert_iterator> : std::true_type {}; + +template +struct locking : std::true_type {}; +template +struct locking>::nonlocking>> + : std::false_type {}; + +template FMT_CONSTEXPR inline auto is_locking() -> bool { + return locking::value; +} +template +FMT_CONSTEXPR inline auto is_locking() -> bool { + return locking::value || is_locking(); +} + +// An optimized version of std::copy with the output value type (T). +template ::value)> +auto copy(InputIt begin, InputIt end, OutputIt out) -> OutputIt { + get_container(out).append(begin, end); + return out; +} + +template ::value)> +FMT_CONSTEXPR auto copy(InputIt begin, InputIt end, OutputIt out) -> OutputIt { + while (begin != end) *out++ = static_cast(*begin++); + return out; +} + +template +FMT_CONSTEXPR auto copy(basic_string_view s, OutputIt out) -> OutputIt { + return copy(s.begin(), s.end(), out); +} + +template +constexpr auto has_const_formatter_impl(T*) + -> decltype(typename Context::template formatter_type().format( + std::declval(), std::declval()), + true) { + return true; +} +template +constexpr auto has_const_formatter_impl(...) -> bool { + return false; +} +template +constexpr auto has_const_formatter() -> bool { + return has_const_formatter_impl(static_cast(nullptr)); +} + +template +struct is_buffer_appender : std::false_type {}; +template +struct is_buffer_appender< + It, bool_constant< + is_back_insert_iterator::value && + std::is_base_of, + typename It::container_type>::value>> + : std::true_type {}; + +// Maps an output iterator to a buffer. +template ::value)> +auto get_buffer(OutputIt out) -> iterator_buffer { + return iterator_buffer(out); +} +template ::value)> +auto get_buffer(OutputIt out) -> buffer& { + return get_container(out); +} + +template +auto get_iterator(Buf& buf, OutputIt) -> decltype(buf.out()) { + return buf.out(); +} +template +auto get_iterator(buffer&, OutputIt out) -> OutputIt { + return out; +} + +struct view {}; + +template struct named_arg : view { + const Char* name; + const T& value; + named_arg(const Char* n, const T& v) : name(n), value(v) {} +}; + +template struct named_arg_info { + const Char* name; + int id; +}; + +template struct is_named_arg : std::false_type {}; +template struct is_statically_named_arg : std::false_type {}; + +template +struct is_named_arg> : std::true_type {}; + +template constexpr auto count() -> size_t { return B ? 1 : 0; } +template constexpr auto count() -> size_t { + return (B1 ? 1 : 0) + count(); +} + +template constexpr auto count_named_args() -> size_t { + return count::value...>(); +} + +template +constexpr auto count_statically_named_args() -> size_t { + return count::value...>(); +} + +struct unformattable {}; +struct unformattable_char : unformattable {}; +struct unformattable_pointer : unformattable {}; + +template struct string_value { + const Char* data; + size_t size; +}; + +template struct named_arg_value { + const named_arg_info* data; + size_t size; +}; + +template struct custom_value { + using parse_context = typename Context::parse_context_type; + void* value; + void (*format)(void* arg, parse_context& parse_ctx, Context& ctx); +}; + +// A formatting argument value. +template class value { + public: + using char_type = typename Context::char_type; + + union { + monostate no_value; + int int_value; + unsigned uint_value; + long long long_long_value; + unsigned long long ulong_long_value; + int128_opt int128_value; + uint128_opt uint128_value; + bool bool_value; + char_type char_value; + float float_value; + double double_value; + long double long_double_value; + const void* pointer; + string_value string; + custom_value custom; + named_arg_value named_args; + }; + + constexpr FMT_ALWAYS_INLINE value() : no_value() {} + constexpr FMT_ALWAYS_INLINE value(int val) : int_value(val) {} + constexpr FMT_ALWAYS_INLINE value(unsigned val) : uint_value(val) {} + constexpr FMT_ALWAYS_INLINE value(long long val) : long_long_value(val) {} + constexpr FMT_ALWAYS_INLINE value(unsigned long long val) + : ulong_long_value(val) {} + FMT_ALWAYS_INLINE value(int128_opt val) : int128_value(val) {} + FMT_ALWAYS_INLINE value(uint128_opt val) : uint128_value(val) {} + constexpr FMT_ALWAYS_INLINE value(float val) : float_value(val) {} + constexpr FMT_ALWAYS_INLINE value(double val) : double_value(val) {} + FMT_ALWAYS_INLINE value(long double val) : long_double_value(val) {} + constexpr FMT_ALWAYS_INLINE value(bool val) : bool_value(val) {} + constexpr FMT_ALWAYS_INLINE value(char_type val) : char_value(val) {} + FMT_CONSTEXPR FMT_ALWAYS_INLINE value(const char_type* val) { + string.data = val; + if (is_constant_evaluated()) string.size = {}; + } + FMT_CONSTEXPR FMT_ALWAYS_INLINE value(basic_string_view val) { + string.data = val.data(); + string.size = val.size(); + } + FMT_ALWAYS_INLINE value(const void* val) : pointer(val) {} + FMT_ALWAYS_INLINE value(const named_arg_info* args, size_t size) + : named_args{args, size} {} + + template FMT_CONSTEXPR20 FMT_ALWAYS_INLINE value(T& val) { + using value_type = remove_const_t; + // T may overload operator& e.g. std::vector::reference in libc++. +#if defined(__cpp_if_constexpr) + if constexpr (std::is_same::value) + custom.value = const_cast(&val); +#endif + if (!is_constant_evaluated()) + custom.value = const_cast(&reinterpret_cast(val)); + // Get the formatter type through the context to allow different contexts + // have different extension points, e.g. `formatter` for `format` and + // `printf_formatter` for `printf`. + custom.format = format_custom_arg< + value_type, typename Context::template formatter_type>; + } + value(unformattable); + value(unformattable_char); + value(unformattable_pointer); + + private: + // Formats an argument of a custom type, such as a user-defined class. + template + static void format_custom_arg(void* arg, + typename Context::parse_context_type& parse_ctx, + Context& ctx) { + auto f = Formatter(); + parse_ctx.advance_to(f.parse(parse_ctx)); + using qualified_type = + conditional_t(), const T, T>; + // format must be const for compatibility with std::format and compilation. + const auto& cf = f; + ctx.advance_to(cf.format(*static_cast(arg), ctx)); + } +}; + +// To minimize the number of types we need to deal with, long is translated +// either to int or to long long depending on its size. +enum { long_short = sizeof(long) == sizeof(int) }; +using long_type = conditional_t; +using ulong_type = conditional_t; + +template struct format_as_result { + template ::value || std::is_class::value)> + static auto map(U*) -> remove_cvref_t()))>; + static auto map(...) -> void; + + using type = decltype(map(static_cast(nullptr))); +}; +template using format_as_t = typename format_as_result::type; + +template +struct has_format_as + : bool_constant, void>::value> {}; + +#define FMT_MAP_API FMT_CONSTEXPR FMT_ALWAYS_INLINE + +// Maps formatting arguments to core types. +// arg_mapper reports errors by returning unformattable instead of using +// static_assert because it's used in the is_formattable trait. +template struct arg_mapper { + using char_type = typename Context::char_type; + + FMT_MAP_API auto map(signed char val) -> int { return val; } + FMT_MAP_API auto map(unsigned char val) -> unsigned { return val; } + FMT_MAP_API auto map(short val) -> int { return val; } + FMT_MAP_API auto map(unsigned short val) -> unsigned { return val; } + FMT_MAP_API auto map(int val) -> int { return val; } + FMT_MAP_API auto map(unsigned val) -> unsigned { return val; } + FMT_MAP_API auto map(long val) -> long_type { return val; } + FMT_MAP_API auto map(unsigned long val) -> ulong_type { return val; } + FMT_MAP_API auto map(long long val) -> long long { return val; } + FMT_MAP_API auto map(unsigned long long val) -> unsigned long long { + return val; + } + FMT_MAP_API auto map(int128_opt val) -> int128_opt { return val; } + FMT_MAP_API auto map(uint128_opt val) -> uint128_opt { return val; } + FMT_MAP_API auto map(bool val) -> bool { return val; } + + template ::value || + std::is_same::value)> + FMT_MAP_API auto map(T val) -> char_type { + return val; + } + template ::value || +#ifdef __cpp_char8_t + std::is_same::value || +#endif + std::is_same::value || + std::is_same::value) && + !std::is_same::value, + int> = 0> + FMT_MAP_API auto map(T) -> unformattable_char { + return {}; + } + + FMT_MAP_API auto map(float val) -> float { return val; } + FMT_MAP_API auto map(double val) -> double { return val; } + FMT_MAP_API auto map(long double val) -> long double { return val; } + + FMT_MAP_API auto map(char_type* val) -> const char_type* { return val; } + FMT_MAP_API auto map(const char_type* val) -> const char_type* { return val; } + template , + FMT_ENABLE_IF(std::is_same::value && + !std::is_pointer::value)> + FMT_MAP_API auto map(const T& val) -> basic_string_view { + return to_string_view(val); + } + template , + FMT_ENABLE_IF(!std::is_same::value && + !std::is_pointer::value)> + FMT_MAP_API auto map(const T&) -> unformattable_char { + return {}; + } + + FMT_MAP_API auto map(void* val) -> const void* { return val; } + FMT_MAP_API auto map(const void* val) -> const void* { return val; } + FMT_MAP_API auto map(volatile void* val) -> const void* { + return const_cast(val); + } + FMT_MAP_API auto map(const volatile void* val) -> const void* { + return const_cast(val); + } + FMT_MAP_API auto map(std::nullptr_t val) -> const void* { return val; } + + // Use SFINAE instead of a const T* parameter to avoid a conflict with the + // array overload. + template < + typename T, + FMT_ENABLE_IF( + std::is_pointer::value || std::is_member_pointer::value || + std::is_function::type>::value || + (std::is_array::value && + !std::is_convertible::value))> + FMT_CONSTEXPR auto map(const T&) -> unformattable_pointer { + return {}; + } + + template ::value)> + FMT_MAP_API auto map(const T (&values)[N]) -> const T (&)[N] { + return values; + } + + // Only map owning types because mapping views can be unsafe. + template , + FMT_ENABLE_IF(std::is_arithmetic::value)> + FMT_MAP_API auto map(const T& val) -> decltype(FMT_DECLTYPE_THIS map(U())) { + return map(format_as(val)); + } + + template > + struct formattable : bool_constant() || + (has_formatter::value && + !std::is_const::value)> {}; + + template ::value)> + FMT_MAP_API auto do_map(T& val) -> T& { + return val; + } + template ::value)> + FMT_MAP_API auto do_map(T&) -> unformattable { + return {}; + } + + // is_fundamental is used to allow formatters for extended FP types. + template , + FMT_ENABLE_IF( + (std::is_class::value || std::is_enum::value || + std::is_union::value || std::is_fundamental::value) && + !has_to_string_view::value && !is_char::value && + !is_named_arg::value && !std::is_integral::value && + !std::is_arithmetic>::value)> + FMT_MAP_API auto map(T& val) -> decltype(FMT_DECLTYPE_THIS do_map(val)) { + return do_map(val); + } + + template ::value)> + FMT_MAP_API auto map(const T& named_arg) + -> decltype(FMT_DECLTYPE_THIS map(named_arg.value)) { + return map(named_arg.value); + } + + auto map(...) -> unformattable { return {}; } +}; + +// A type constant after applying arg_mapper. +template +using mapped_type_constant = + type_constant().map(std::declval())), + typename Context::char_type>; + +enum { packed_arg_bits = 4 }; +// Maximum number of arguments with packed types. +enum { max_packed_args = 62 / packed_arg_bits }; +enum : unsigned long long { is_unpacked_bit = 1ULL << 63 }; +enum : unsigned long long { has_named_args_bit = 1ULL << 62 }; + +template +struct is_output_iterator : std::false_type {}; + +template <> struct is_output_iterator : std::true_type {}; + +template +struct is_output_iterator< + It, T, void_t()++ = std::declval())>> + : std::true_type {}; + +// A type-erased reference to an std::locale to avoid a heavy include. +class locale_ref { + private: + const void* locale_; // A type-erased pointer to std::locale. + + public: + constexpr locale_ref() : locale_(nullptr) {} + template explicit locale_ref(const Locale& loc); + + explicit operator bool() const noexcept { return locale_ != nullptr; } + + template auto get() const -> Locale; +}; + +template constexpr auto encode_types() -> unsigned long long { + return 0; +} + +template +constexpr auto encode_types() -> unsigned long long { + return static_cast(mapped_type_constant::value) | + (encode_types() << packed_arg_bits); +} + +template +constexpr unsigned long long make_descriptor() { + return NUM_ARGS <= max_packed_args ? encode_types() + : is_unpacked_bit | NUM_ARGS; +} + +// This type is intentionally undefined, only used for errors. +template +#if FMT_CLANG_VERSION && FMT_CLANG_VERSION <= 1500 +// https://github.com/fmtlib/fmt/issues/3796 +struct type_is_unformattable_for { +}; +#else +struct type_is_unformattable_for; +#endif + +template +FMT_CONSTEXPR auto make_arg(T& val) -> value { + using arg_type = remove_cvref_t().map(val))>; + + // Use enum instead of constexpr because the latter may generate code. + enum { + formattable_char = !std::is_same::value + }; + static_assert(formattable_char, "Mixing character types is disallowed."); + + // Formatting of arbitrary pointers is disallowed. If you want to format a + // pointer cast it to `void*` or `const void*`. In particular, this forbids + // formatting of `[const] volatile char*` printed as bool by iostreams. + enum { + formattable_pointer = !std::is_same::value + }; + static_assert(formattable_pointer, + "Formatting of non-void pointers is disallowed."); + + enum { formattable = !std::is_same::value }; +#if defined(__cpp_if_constexpr) + if constexpr (!formattable) + type_is_unformattable_for _; +#endif + static_assert( + formattable, + "Cannot format an argument. To make type T formattable provide a " + "formatter specialization: https://fmt.dev/latest/api.html#udt"); + return {arg_mapper().map(val)}; +} + +template +FMT_CONSTEXPR auto make_arg(T& val) -> basic_format_arg { + auto arg = basic_format_arg(); + arg.type_ = mapped_type_constant::value; + arg.value_ = make_arg(val); + return arg; +} + +template +FMT_CONSTEXPR inline auto make_arg(T& val) -> basic_format_arg { + return make_arg(val); +} + +template +using arg_t = conditional_t, + basic_format_arg>; + +template ::value)> +void init_named_arg(named_arg_info*, int& arg_index, int&, const T&) { + ++arg_index; +} +template ::value)> +void init_named_arg(named_arg_info* named_args, int& arg_index, + int& named_arg_index, const T& arg) { + named_args[named_arg_index++] = {arg.name, arg_index++}; +} + +// An array of references to arguments. It can be implicitly converted to +// `fmt::basic_format_args` for passing into type-erased formatting functions +// such as `fmt::vformat`. +template +struct format_arg_store { + // args_[0].named_args points to named_args to avoid bloating format_args. + // +1 to workaround a bug in gcc 7.5 that causes duplicated-branches warning. + static constexpr size_t ARGS_ARR_SIZE = 1 + (NUM_ARGS != 0 ? NUM_ARGS : +1); + + arg_t args[ARGS_ARR_SIZE]; + named_arg_info named_args[NUM_NAMED_ARGS]; + + template + FMT_MAP_API format_arg_store(T&... values) + : args{{named_args, NUM_NAMED_ARGS}, + make_arg(values)...} { + using dummy = int[]; + int arg_index = 0, named_arg_index = 0; + (void)dummy{ + 0, + (init_named_arg(named_args, arg_index, named_arg_index, values), 0)...}; + } + + format_arg_store(format_arg_store&& rhs) { + args[0] = {named_args, NUM_NAMED_ARGS}; + for (size_t i = 1; i < ARGS_ARR_SIZE; ++i) args[i] = rhs.args[i]; + for (size_t i = 0; i < NUM_NAMED_ARGS; ++i) + named_args[i] = rhs.named_args[i]; + } + + format_arg_store(const format_arg_store& rhs) = delete; + format_arg_store& operator=(const format_arg_store& rhs) = delete; + format_arg_store& operator=(format_arg_store&& rhs) = delete; +}; + +// A specialization of format_arg_store without named arguments. +// It is a plain struct to reduce binary size in debug mode. +template +struct format_arg_store { + // +1 to workaround a bug in gcc 7.5 that causes duplicated-branches warning. + arg_t args[NUM_ARGS != 0 ? NUM_ARGS : +1]; +}; + +} // namespace detail +FMT_BEGIN_EXPORT + +// A formatting argument. Context is a template parameter for the compiled API +// where output can be unbuffered. +template class basic_format_arg { + private: + detail::value value_; + detail::type type_; + + template + friend FMT_CONSTEXPR auto detail::make_arg(T& value) + -> basic_format_arg; + + friend class basic_format_args; + friend class dynamic_format_arg_store; + + using char_type = typename Context::char_type; + + template + friend struct detail::format_arg_store; + + basic_format_arg(const detail::named_arg_info* args, size_t size) + : value_(args, size) {} + + public: + class handle { + public: + explicit handle(detail::custom_value custom) : custom_(custom) {} + + void format(typename Context::parse_context_type& parse_ctx, + Context& ctx) const { + custom_.format(custom_.value, parse_ctx, ctx); + } + + private: + detail::custom_value custom_; + }; + + constexpr basic_format_arg() : type_(detail::type::none_type) {} + + constexpr explicit operator bool() const noexcept { + return type_ != detail::type::none_type; + } + + auto type() const -> detail::type { return type_; } + + auto is_integral() const -> bool { return detail::is_integral_type(type_); } + auto is_arithmetic() const -> bool { + return detail::is_arithmetic_type(type_); + } + + /** + * Visits an argument dispatching to the appropriate visit method based on + * the argument type. For example, if the argument type is `double` then + * `vis(value)` will be called with the value of type `double`. + */ + template + FMT_CONSTEXPR FMT_INLINE auto visit(Visitor&& vis) const -> decltype(vis(0)) { + switch (type_) { + case detail::type::none_type: + break; + case detail::type::int_type: + return vis(value_.int_value); + case detail::type::uint_type: + return vis(value_.uint_value); + case detail::type::long_long_type: + return vis(value_.long_long_value); + case detail::type::ulong_long_type: + return vis(value_.ulong_long_value); + case detail::type::int128_type: + return vis(detail::convert_for_visit(value_.int128_value)); + case detail::type::uint128_type: + return vis(detail::convert_for_visit(value_.uint128_value)); + case detail::type::bool_type: + return vis(value_.bool_value); + case detail::type::char_type: + return vis(value_.char_value); + case detail::type::float_type: + return vis(value_.float_value); + case detail::type::double_type: + return vis(value_.double_value); + case detail::type::long_double_type: + return vis(value_.long_double_value); + case detail::type::cstring_type: + return vis(value_.string.data); + case detail::type::string_type: + using sv = basic_string_view; + return vis(sv(value_.string.data, value_.string.size)); + case detail::type::pointer_type: + return vis(value_.pointer); + case detail::type::custom_type: + return vis(typename basic_format_arg::handle(value_.custom)); + } + return vis(monostate()); + } + + auto format_custom(const char_type* parse_begin, + typename Context::parse_context_type& parse_ctx, + Context& ctx) -> bool { + if (type_ != detail::type::custom_type) return false; + parse_ctx.advance_to(parse_begin); + value_.custom.format(value_.custom.value, parse_ctx, ctx); + return true; + } +}; + +template +FMT_DEPRECATED FMT_CONSTEXPR auto visit_format_arg( + Visitor&& vis, const basic_format_arg& arg) -> decltype(vis(0)) { + return arg.visit(static_cast(vis)); +} + +/** + * A view of a collection of formatting arguments. To avoid lifetime issues it + * should only be used as a parameter type in type-erased functions such as + * `vformat`: + * + * void vlog(fmt::string_view fmt, fmt::format_args args); // OK + * fmt::format_args args = fmt::make_format_args(); // Dangling reference + */ +template class basic_format_args { + public: + using size_type = int; + using format_arg = basic_format_arg; + + private: + // A descriptor that contains information about formatting arguments. + // If the number of arguments is less or equal to max_packed_args then + // argument types are passed in the descriptor. This reduces binary code size + // per formatting function call. + unsigned long long desc_; + union { + // If is_packed() returns true then argument values are stored in values_; + // otherwise they are stored in args_. This is done to improve cache + // locality and reduce compiled code size since storing larger objects + // may require more code (at least on x86-64) even if the same amount of + // data is actually copied to stack. It saves ~10% on the bloat test. + const detail::value* values_; + const format_arg* args_; + }; + + constexpr auto is_packed() const -> bool { + return (desc_ & detail::is_unpacked_bit) == 0; + } + constexpr auto has_named_args() const -> bool { + return (desc_ & detail::has_named_args_bit) != 0; + } + + FMT_CONSTEXPR auto type(int index) const -> detail::type { + int shift = index * detail::packed_arg_bits; + unsigned int mask = (1 << detail::packed_arg_bits) - 1; + return static_cast((desc_ >> shift) & mask); + } + + public: + constexpr basic_format_args() : desc_(0), args_(nullptr) {} + + /// Constructs a `basic_format_args` object from `format_arg_store`. + template + constexpr FMT_ALWAYS_INLINE basic_format_args( + const detail::format_arg_store& + store) + : desc_(DESC), values_(store.args + (NUM_NAMED_ARGS != 0 ? 1 : 0)) {} + + template detail::max_packed_args)> + constexpr basic_format_args( + const detail::format_arg_store& + store) + : desc_(DESC), args_(store.args + (NUM_NAMED_ARGS != 0 ? 1 : 0)) {} + + /// Constructs a `basic_format_args` object from `dynamic_format_arg_store`. + constexpr basic_format_args(const dynamic_format_arg_store& store) + : desc_(store.get_types()), args_(store.data()) {} + + /// Constructs a `basic_format_args` object from a dynamic list of arguments. + constexpr basic_format_args(const format_arg* args, int count) + : desc_(detail::is_unpacked_bit | detail::to_unsigned(count)), + args_(args) {} + + /// Returns the argument with the specified id. + FMT_CONSTEXPR auto get(int id) const -> format_arg { + format_arg arg; + if (!is_packed()) { + if (id < max_size()) arg = args_[id]; + return arg; + } + if (static_cast(id) >= detail::max_packed_args) return arg; + arg.type_ = type(id); + if (arg.type_ == detail::type::none_type) return arg; + arg.value_ = values_[id]; + return arg; + } + + template + auto get(basic_string_view name) const -> format_arg { + int id = get_id(name); + return id >= 0 ? get(id) : format_arg(); + } + + template + FMT_CONSTEXPR auto get_id(basic_string_view name) const -> int { + if (!has_named_args()) return -1; + const auto& named_args = + (is_packed() ? values_[-1] : args_[-1].value_).named_args; + for (size_t i = 0; i < named_args.size; ++i) { + if (named_args.data[i].name == name) return named_args.data[i].id; + } + return -1; + } + + auto max_size() const -> int { + unsigned long long max_packed = detail::max_packed_args; + return static_cast(is_packed() ? max_packed + : desc_ & ~detail::is_unpacked_bit); + } +}; + +// A formatting context. +class context { + private: + appender out_; + basic_format_args args_; + detail::locale_ref loc_; + + public: + /// The character type for the output. + using char_type = char; + + using iterator = appender; + using format_arg = basic_format_arg; + using parse_context_type = basic_format_parse_context; + template using formatter_type = formatter; + + /// Constructs a `basic_format_context` object. References to the arguments + /// are stored in the object so make sure they have appropriate lifetimes. + FMT_CONSTEXPR context(iterator out, basic_format_args ctx_args, + detail::locale_ref loc = {}) + : out_(out), args_(ctx_args), loc_(loc) {} + context(context&&) = default; + context(const context&) = delete; + void operator=(const context&) = delete; + + FMT_CONSTEXPR auto arg(int id) const -> format_arg { return args_.get(id); } + auto arg(string_view name) -> format_arg { return args_.get(name); } + FMT_CONSTEXPR auto arg_id(string_view name) -> int { + return args_.get_id(name); + } + auto args() const -> const basic_format_args& { return args_; } + + // Returns an iterator to the beginning of the output range. + FMT_CONSTEXPR auto out() -> iterator { return out_; } + + // Advances the begin iterator to `it`. + void advance_to(iterator) {} + + FMT_CONSTEXPR auto locale() -> detail::locale_ref { return loc_; } +}; + +template class generic_context; + +// Longer aliases for C++20 compatibility. +template +using basic_format_context = + conditional_t::value, context, + generic_context>; +using format_context = context; + +template +using buffered_context = basic_format_context, Char>; + +template +using is_formattable = bool_constant>() + .map(std::declval()))>::value>; + +#if FMT_USE_CONCEPTS +template +concept formattable = is_formattable, Char>::value; +#endif + +/** + * Constructs an object that stores references to arguments and can be + * implicitly converted to `format_args`. `Context` can be omitted in which case + * it defaults to `format_context`. See `arg` for lifetime considerations. + */ +// Take arguments by lvalue references to avoid some lifetime issues, e.g. +// auto args = make_format_args(std::string()); +template (), + unsigned long long DESC = detail::make_descriptor(), + FMT_ENABLE_IF(NUM_NAMED_ARGS == 0)> +constexpr FMT_ALWAYS_INLINE auto make_format_args(T&... args) + -> detail::format_arg_store { + return {{detail::make_arg( + args)...}}; +} + +#ifndef FMT_DOC +template (), + unsigned long long DESC = + detail::make_descriptor() | + static_cast(detail::has_named_args_bit), + FMT_ENABLE_IF(NUM_NAMED_ARGS != 0)> +constexpr auto make_format_args(T&... args) + -> detail::format_arg_store { + return {args...}; +} +#endif + +/** + * Returns a named argument to be used in a formatting function. + * It should only be used in a call to a formatting function or + * `dynamic_format_arg_store::push_back`. + * + * **Example**: + * + * fmt::print("The answer is {answer}.", fmt::arg("answer", 42)); + */ +template +inline auto arg(const Char* name, const T& arg) -> detail::named_arg { + static_assert(!detail::is_named_arg(), "nested named arguments"); + return {name, arg}; +} +FMT_END_EXPORT + +/// An alias for `basic_format_args`. +// A separate type would result in shorter symbols but break ABI compatibility +// between clang and gcc on ARM (#1919). +FMT_EXPORT using format_args = basic_format_args; + +// We cannot use enum classes as bit fields because of a gcc bug, so we put them +// in namespaces instead (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61414). +// Additionally, if an underlying type is specified, older gcc incorrectly warns +// that the type is too small. Both bugs are fixed in gcc 9.3. +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 903 +# define FMT_ENUM_UNDERLYING_TYPE(type) +#else +# define FMT_ENUM_UNDERLYING_TYPE(type) : type +#endif +namespace align { +enum type FMT_ENUM_UNDERLYING_TYPE(unsigned char){none, left, right, center, + numeric}; +} +using align_t = align::type; +namespace sign { +enum type FMT_ENUM_UNDERLYING_TYPE(unsigned char){none, minus, plus, space}; +} +using sign_t = sign::type; + +namespace detail { + +template +using unsigned_char = typename conditional_t::value, + std::make_unsigned, + type_identity>::type; + +// Character (code unit) type is erased to prevent template bloat. +struct fill_t { + private: + enum { max_size = 4 }; + char data_[max_size] = {' '}; + unsigned char size_ = 1; + + public: + template + FMT_CONSTEXPR void operator=(basic_string_view s) { + auto size = s.size(); + size_ = static_cast(size); + if (size == 1) { + unsigned uchar = static_cast>(s[0]); + data_[0] = static_cast(uchar); + data_[1] = static_cast(uchar >> 8); + return; + } + FMT_ASSERT(size <= max_size, "invalid fill"); + for (size_t i = 0; i < size; ++i) data_[i] = static_cast(s[i]); + } + + FMT_CONSTEXPR void operator=(char c) { + data_[0] = c; + size_ = 1; + } + + constexpr auto size() const -> size_t { return size_; } + + template constexpr auto get() const -> Char { + using uchar = unsigned char; + return static_cast(static_cast(data_[0]) | + (static_cast(data_[1]) << 8)); + } + + template ::value)> + constexpr auto data() const -> const Char* { + return data_; + } + template ::value)> + constexpr auto data() const -> const Char* { + return nullptr; + } +}; +} // namespace detail + +enum class presentation_type : unsigned char { + // Common specifiers: + none = 0, + debug = 1, // '?' + string = 2, // 's' (string, bool) + + // Integral, bool and character specifiers: + dec = 3, // 'd' + hex, // 'x' or 'X' + oct, // 'o' + bin, // 'b' or 'B' + chr, // 'c' + + // String and pointer specifiers: + pointer = 3, // 'p' + + // Floating-point specifiers: + exp = 1, // 'e' or 'E' (1 since there is no FP debug presentation) + fixed, // 'f' or 'F' + general, // 'g' or 'G' + hexfloat // 'a' or 'A' +}; + +// Format specifiers for built-in and string types. +struct format_specs { + int width; + int precision; + presentation_type type; + align_t align : 4; + sign_t sign : 3; + bool upper : 1; // An uppercase version e.g. 'X' for 'x'. + bool alt : 1; // Alternate form ('#'). + bool localized : 1; + detail::fill_t fill; + + constexpr format_specs() + : width(0), + precision(-1), + type(presentation_type::none), + align(align::none), + sign(sign::none), + upper(false), + alt(false), + localized(false) {} +}; + +namespace detail { + +enum class arg_id_kind { none, index, name }; + +// An argument reference. +template struct arg_ref { + FMT_CONSTEXPR arg_ref() : kind(arg_id_kind::none), val() {} + + FMT_CONSTEXPR explicit arg_ref(int index) + : kind(arg_id_kind::index), val(index) {} + FMT_CONSTEXPR explicit arg_ref(basic_string_view name) + : kind(arg_id_kind::name), val(name) {} + + FMT_CONSTEXPR auto operator=(int idx) -> arg_ref& { + kind = arg_id_kind::index; + val.index = idx; + return *this; + } + + arg_id_kind kind; + union value { + FMT_CONSTEXPR value(int idx = 0) : index(idx) {} + FMT_CONSTEXPR value(basic_string_view n) : name(n) {} + + int index; + basic_string_view name; + } val; +}; + +// Format specifiers with width and precision resolved at formatting rather +// than parsing time to allow reusing the same parsed specifiers with +// different sets of arguments (precompilation of format strings). +template struct dynamic_format_specs : format_specs { + arg_ref width_ref; + arg_ref precision_ref; +}; + +// Converts a character to ASCII. Returns '\0' on conversion failure. +template ::value)> +constexpr auto to_ascii(Char c) -> char { + return c <= 0xff ? static_cast(c) : '\0'; +} + +// Returns the number of code units in a code point or 1 on error. +template +FMT_CONSTEXPR auto code_point_length(const Char* begin) -> int { + if (const_check(sizeof(Char) != 1)) return 1; + auto c = static_cast(*begin); + return static_cast((0x3a55000000000000ull >> (2 * (c >> 3))) & 0x3) + 1; +} + +// Return the result via the out param to workaround gcc bug 77539. +template +FMT_CONSTEXPR auto find(Ptr first, Ptr last, T value, Ptr& out) -> bool { + for (out = first; out != last; ++out) { + if (*out == value) return true; + } + return false; +} + +template <> +inline auto find(const char* first, const char* last, char value, + const char*& out) -> bool { + out = + static_cast(memchr(first, value, to_unsigned(last - first))); + return out != nullptr; +} + +// Parses the range [begin, end) as an unsigned integer. This function assumes +// that the range is non-empty and the first character is a digit. +template +FMT_CONSTEXPR auto parse_nonnegative_int(const Char*& begin, const Char* end, + int error_value) noexcept -> int { + FMT_ASSERT(begin != end && '0' <= *begin && *begin <= '9', ""); + unsigned value = 0, prev = 0; + auto p = begin; + do { + prev = value; + value = value * 10 + unsigned(*p - '0'); + ++p; + } while (p != end && '0' <= *p && *p <= '9'); + auto num_digits = p - begin; + begin = p; + int digits10 = static_cast(sizeof(int) * CHAR_BIT * 3 / 10); + if (num_digits <= digits10) return static_cast(value); + // Check for overflow. + unsigned max = INT_MAX; + return num_digits == digits10 + 1 && + prev * 10ull + unsigned(p[-1] - '0') <= max + ? static_cast(value) + : error_value; +} + +FMT_CONSTEXPR inline auto parse_align(char c) -> align_t { + switch (c) { + case '<': + return align::left; + case '>': + return align::right; + case '^': + return align::center; + } + return align::none; +} + +template constexpr auto is_name_start(Char c) -> bool { + return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '_'; +} + +template +FMT_CONSTEXPR auto do_parse_arg_id(const Char* begin, const Char* end, + Handler&& handler) -> const Char* { + Char c = *begin; + if (c >= '0' && c <= '9') { + int index = 0; + if (c != '0') + index = parse_nonnegative_int(begin, end, INT_MAX); + else + ++begin; + if (begin == end || (*begin != '}' && *begin != ':')) + report_error("invalid format string"); + else + handler.on_index(index); + return begin; + } + if (!is_name_start(c)) { + report_error("invalid format string"); + return begin; + } + auto it = begin; + do { + ++it; + } while (it != end && (is_name_start(*it) || ('0' <= *it && *it <= '9'))); + handler.on_name({begin, to_unsigned(it - begin)}); + return it; +} + +template +FMT_CONSTEXPR auto parse_arg_id(const Char* begin, const Char* end, + Handler&& handler) -> const Char* { + FMT_ASSERT(begin != end, ""); + Char c = *begin; + if (c != '}' && c != ':') return do_parse_arg_id(begin, end, handler); + handler.on_auto(); + return begin; +} + +template struct dynamic_spec_id_handler { + basic_format_parse_context& ctx; + arg_ref& ref; + + FMT_CONSTEXPR void on_auto() { + int id = ctx.next_arg_id(); + ref = arg_ref(id); + ctx.check_dynamic_spec(id); + } + FMT_CONSTEXPR void on_index(int id) { + ref = arg_ref(id); + ctx.check_arg_id(id); + ctx.check_dynamic_spec(id); + } + FMT_CONSTEXPR void on_name(basic_string_view id) { + ref = arg_ref(id); + ctx.check_arg_id(id); + } +}; + +// Parses [integer | "{" [arg_id] "}"]. +template +FMT_CONSTEXPR auto parse_dynamic_spec(const Char* begin, const Char* end, + int& value, arg_ref& ref, + basic_format_parse_context& ctx) + -> const Char* { + FMT_ASSERT(begin != end, ""); + if ('0' <= *begin && *begin <= '9') { + int val = parse_nonnegative_int(begin, end, -1); + if (val != -1) + value = val; + else + report_error("number is too big"); + } else if (*begin == '{') { + ++begin; + auto handler = dynamic_spec_id_handler{ctx, ref}; + if (begin != end) begin = parse_arg_id(begin, end, handler); + if (begin != end && *begin == '}') return ++begin; + report_error("invalid format string"); + } + return begin; +} + +template +FMT_CONSTEXPR auto parse_precision(const Char* begin, const Char* end, + int& value, arg_ref& ref, + basic_format_parse_context& ctx) + -> const Char* { + ++begin; + if (begin == end || *begin == '}') { + report_error("invalid precision"); + return begin; + } + return parse_dynamic_spec(begin, end, value, ref, ctx); +} + +enum class state { start, align, sign, hash, zero, width, precision, locale }; + +// Parses standard format specifiers. +template +FMT_CONSTEXPR auto parse_format_specs(const Char* begin, const Char* end, + dynamic_format_specs& specs, + basic_format_parse_context& ctx, + type arg_type) -> const Char* { + auto c = '\0'; + if (end - begin > 1) { + auto next = to_ascii(begin[1]); + c = parse_align(next) == align::none ? to_ascii(*begin) : '\0'; + } else { + if (begin == end) return begin; + c = to_ascii(*begin); + } + + struct { + state current_state = state::start; + FMT_CONSTEXPR void operator()(state s, bool valid = true) { + if (current_state >= s || !valid) + report_error("invalid format specifier"); + current_state = s; + } + } enter_state; + + using pres = presentation_type; + constexpr auto integral_set = sint_set | uint_set | bool_set | char_set; + struct { + const Char*& begin; + dynamic_format_specs& specs; + type arg_type; + + FMT_CONSTEXPR auto operator()(pres pres_type, int set) -> const Char* { + if (!in(arg_type, set)) { + if (arg_type == type::none_type) return begin; + report_error("invalid format specifier"); + } + specs.type = pres_type; + return begin + 1; + } + } parse_presentation_type{begin, specs, arg_type}; + + for (;;) { + switch (c) { + case '<': + case '>': + case '^': + enter_state(state::align); + specs.align = parse_align(c); + ++begin; + break; + case '+': + case '-': + case ' ': + if (arg_type == type::none_type) return begin; + enter_state(state::sign, in(arg_type, sint_set | float_set)); + switch (c) { + case '+': + specs.sign = sign::plus; + break; + case '-': + specs.sign = sign::minus; + break; + case ' ': + specs.sign = sign::space; + break; + } + ++begin; + break; + case '#': + if (arg_type == type::none_type) return begin; + enter_state(state::hash, is_arithmetic_type(arg_type)); + specs.alt = true; + ++begin; + break; + case '0': + enter_state(state::zero); + if (!is_arithmetic_type(arg_type)) { + if (arg_type == type::none_type) return begin; + report_error("format specifier requires numeric argument"); + } + if (specs.align == align::none) { + // Ignore 0 if align is specified for compatibility with std::format. + specs.align = align::numeric; + specs.fill = '0'; + } + ++begin; + break; + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + case '{': + enter_state(state::width); + begin = parse_dynamic_spec(begin, end, specs.width, specs.width_ref, ctx); + break; + case '.': + if (arg_type == type::none_type) return begin; + enter_state(state::precision, + in(arg_type, float_set | string_set | cstring_set)); + begin = parse_precision(begin, end, specs.precision, specs.precision_ref, + ctx); + break; + case 'L': + if (arg_type == type::none_type) return begin; + enter_state(state::locale, is_arithmetic_type(arg_type)); + specs.localized = true; + ++begin; + break; + case 'd': + return parse_presentation_type(pres::dec, integral_set); + case 'X': + specs.upper = true; + FMT_FALLTHROUGH; + case 'x': + return parse_presentation_type(pres::hex, integral_set); + case 'o': + return parse_presentation_type(pres::oct, integral_set); + case 'B': + specs.upper = true; + FMT_FALLTHROUGH; + case 'b': + return parse_presentation_type(pres::bin, integral_set); + case 'E': + specs.upper = true; + FMT_FALLTHROUGH; + case 'e': + return parse_presentation_type(pres::exp, float_set); + case 'F': + specs.upper = true; + FMT_FALLTHROUGH; + case 'f': + return parse_presentation_type(pres::fixed, float_set); + case 'G': + specs.upper = true; + FMT_FALLTHROUGH; + case 'g': + return parse_presentation_type(pres::general, float_set); + case 'A': + specs.upper = true; + FMT_FALLTHROUGH; + case 'a': + return parse_presentation_type(pres::hexfloat, float_set); + case 'c': + if (arg_type == type::bool_type) report_error("invalid format specifier"); + return parse_presentation_type(pres::chr, integral_set); + case 's': + return parse_presentation_type(pres::string, + bool_set | string_set | cstring_set); + case 'p': + return parse_presentation_type(pres::pointer, pointer_set | cstring_set); + case '?': + return parse_presentation_type(pres::debug, + char_set | string_set | cstring_set); + case '}': + return begin; + default: { + if (*begin == '}') return begin; + // Parse fill and alignment. + auto fill_end = begin + code_point_length(begin); + if (end - fill_end <= 0) { + report_error("invalid format specifier"); + return begin; + } + if (*begin == '{') { + report_error("invalid fill character '{'"); + return begin; + } + auto align = parse_align(to_ascii(*fill_end)); + enter_state(state::align, align != align::none); + specs.fill = + basic_string_view(begin, to_unsigned(fill_end - begin)); + specs.align = align; + begin = fill_end + 1; + } + } + if (begin == end) return begin; + c = to_ascii(*begin); + } +} + +template +FMT_CONSTEXPR auto parse_replacement_field(const Char* begin, const Char* end, + Handler&& handler) -> const Char* { + struct id_adapter { + Handler& handler; + int arg_id; + + FMT_CONSTEXPR void on_auto() { arg_id = handler.on_arg_id(); } + FMT_CONSTEXPR void on_index(int id) { arg_id = handler.on_arg_id(id); } + FMT_CONSTEXPR void on_name(basic_string_view id) { + arg_id = handler.on_arg_id(id); + } + }; + + ++begin; + if (begin == end) return handler.on_error("invalid format string"), end; + if (*begin == '}') { + handler.on_replacement_field(handler.on_arg_id(), begin); + } else if (*begin == '{') { + handler.on_text(begin, begin + 1); + } else { + auto adapter = id_adapter{handler, 0}; + begin = parse_arg_id(begin, end, adapter); + Char c = begin != end ? *begin : Char(); + if (c == '}') { + handler.on_replacement_field(adapter.arg_id, begin); + } else if (c == ':') { + begin = handler.on_format_specs(adapter.arg_id, begin + 1, end); + if (begin == end || *begin != '}') + return handler.on_error("unknown format specifier"), end; + } else { + return handler.on_error("missing '}' in format string"), end; + } + } + return begin + 1; +} + +template +FMT_CONSTEXPR void parse_format_string(basic_string_view format_str, + Handler&& handler) { + auto begin = format_str.data(); + auto end = begin + format_str.size(); + if (end - begin < 32) { + // Use a simple loop instead of memchr for small strings. + const Char* p = begin; + while (p != end) { + auto c = *p++; + if (c == '{') { + handler.on_text(begin, p - 1); + begin = p = parse_replacement_field(p - 1, end, handler); + } else if (c == '}') { + if (p == end || *p != '}') + return handler.on_error("unmatched '}' in format string"); + handler.on_text(begin, p); + begin = ++p; + } + } + handler.on_text(begin, end); + return; + } + struct writer { + FMT_CONSTEXPR void operator()(const Char* from, const Char* to) { + if (from == to) return; + for (;;) { + const Char* p = nullptr; + if (!find(from, to, Char('}'), p)) + return handler_.on_text(from, to); + ++p; + if (p == to || *p != '}') + return handler_.on_error("unmatched '}' in format string"); + handler_.on_text(from, p); + from = p + 1; + } + } + Handler& handler_; + } write = {handler}; + while (begin != end) { + // Doing two passes with memchr (one for '{' and another for '}') is up to + // 2.5x faster than the naive one-pass implementation on big format strings. + const Char* p = begin; + if (*begin != '{' && !find(begin + 1, end, Char('{'), p)) + return write(begin, end); + write(begin, p); + begin = parse_replacement_field(p, end, handler); + } +} + +template ::value> struct strip_named_arg { + using type = T; +}; +template struct strip_named_arg { + using type = remove_cvref_t; +}; + +template +FMT_VISIBILITY("hidden") // Suppress an ld warning on macOS (#3769). +FMT_CONSTEXPR auto parse_format_specs(ParseContext& ctx) + -> decltype(ctx.begin()) { + using char_type = typename ParseContext::char_type; + using context = buffered_context; + using mapped_type = conditional_t< + mapped_type_constant::value != type::custom_type, + decltype(arg_mapper().map(std::declval())), + typename strip_named_arg::type>; +#if defined(__cpp_if_constexpr) + if constexpr (std::is_default_constructible< + formatter>::value) { + return formatter().parse(ctx); + } else { + type_is_unformattable_for _; + return ctx.begin(); + } +#else + return formatter().parse(ctx); +#endif +} + +// Checks char specs and returns true iff the presentation type is char-like. +FMT_CONSTEXPR inline auto check_char_specs(const format_specs& specs) -> bool { + if (specs.type != presentation_type::none && + specs.type != presentation_type::chr && + specs.type != presentation_type::debug) { + return false; + } + if (specs.align == align::numeric || specs.sign != sign::none || specs.alt) + report_error("invalid format specifier for char"); + return true; +} + +#if FMT_USE_NONTYPE_TEMPLATE_ARGS +template +constexpr auto get_arg_index_by_name(basic_string_view name) -> int { + if constexpr (is_statically_named_arg()) { + if (name == T::name) return N; + } + if constexpr (sizeof...(Args) > 0) + return get_arg_index_by_name(name); + (void)name; // Workaround an MSVC bug about "unused" parameter. + return -1; +} +#endif + +template +FMT_CONSTEXPR auto get_arg_index_by_name(basic_string_view name) -> int { +#if FMT_USE_NONTYPE_TEMPLATE_ARGS + if constexpr (sizeof...(Args) > 0) + return get_arg_index_by_name<0, Args...>(name); +#endif + (void)name; + return -1; +} + +template class format_string_checker { + private: + using parse_context_type = compile_parse_context; + static constexpr int num_args = sizeof...(Args); + + // Format specifier parsing function. + // In the future basic_format_parse_context will replace compile_parse_context + // here and will use is_constant_evaluated and downcasting to access the data + // needed for compile-time checks: https://godbolt.org/z/GvWzcTjh1. + using parse_func = const Char* (*)(parse_context_type&); + + type types_[num_args > 0 ? static_cast(num_args) : 1]; + parse_context_type context_; + parse_func parse_funcs_[num_args > 0 ? static_cast(num_args) : 1]; + + public: + explicit FMT_CONSTEXPR format_string_checker(basic_string_view fmt) + : types_{mapped_type_constant>::value...}, + context_(fmt, num_args, types_), + parse_funcs_{&parse_format_specs...} {} + + FMT_CONSTEXPR void on_text(const Char*, const Char*) {} + + FMT_CONSTEXPR auto on_arg_id() -> int { return context_.next_arg_id(); } + FMT_CONSTEXPR auto on_arg_id(int id) -> int { + return context_.check_arg_id(id), id; + } + FMT_CONSTEXPR auto on_arg_id(basic_string_view id) -> int { +#if FMT_USE_NONTYPE_TEMPLATE_ARGS + auto index = get_arg_index_by_name(id); + if (index < 0) on_error("named argument is not found"); + return index; +#else + (void)id; + on_error("compile-time checks for named arguments require C++20 support"); + return 0; +#endif + } + + FMT_CONSTEXPR void on_replacement_field(int id, const Char* begin) { + on_format_specs(id, begin, begin); // Call parse() on empty specs. + } + + FMT_CONSTEXPR auto on_format_specs(int id, const Char* begin, const Char*) + -> const Char* { + context_.advance_to(begin); + // id >= 0 check is a workaround for gcc 10 bug (#2065). + return id >= 0 && id < num_args ? parse_funcs_[id](context_) : begin; + } + + FMT_NORETURN FMT_CONSTEXPR void on_error(const char* message) { + report_error(message); + } +}; + +// A base class for compile-time strings. +struct compile_string {}; + +template +using is_compile_string = std::is_base_of; + +// Reports a compile-time error if S is not a valid format string. +template ::value)> +FMT_ALWAYS_INLINE void check_format_string(const S&) { +#ifdef FMT_ENFORCE_COMPILE_STRING + static_assert(is_compile_string::value, + "FMT_ENFORCE_COMPILE_STRING requires all format strings to use " + "FMT_STRING."); +#endif +} +template ::value)> +void check_format_string(S format_str) { + using char_t = typename S::char_type; + FMT_CONSTEXPR auto s = basic_string_view(format_str); + using checker = format_string_checker...>; + FMT_CONSTEXPR bool error = (parse_format_string(s, checker(s)), true); + ignore_unused(error); +} + +// Report truncation to prevent silent data loss. +inline void report_truncation(bool truncated) { + if (truncated) report_error("output is truncated"); +} + +// Use vformat_args and avoid type_identity to keep symbols short and workaround +// a GCC <= 4.8 bug. +template struct vformat_args { + using type = basic_format_args>; +}; +template <> struct vformat_args { + using type = format_args; +}; + +template +void vformat_to(buffer& buf, basic_string_view fmt, + typename vformat_args::type args, locale_ref loc = {}); + +FMT_API void vprint_mojibake(FILE*, string_view, format_args, bool = false); +#ifndef _WIN32 +inline void vprint_mojibake(FILE*, string_view, format_args, bool) {} +#endif + +template struct native_formatter { + private: + dynamic_format_specs specs_; + + public: + using nonlocking = void; + + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> const Char* { + if (ctx.begin() == ctx.end() || *ctx.begin() == '}') return ctx.begin(); + auto end = parse_format_specs(ctx.begin(), ctx.end(), specs_, ctx, TYPE); + if (const_check(TYPE == type::char_type)) check_char_specs(specs_); + return end; + } + + template + FMT_CONSTEXPR void set_debug_format(bool set = true) { + specs_.type = set ? presentation_type::debug : presentation_type::none; + } + + template + FMT_CONSTEXPR auto format(const T& val, FormatContext& ctx) const + -> decltype(ctx.out()); +}; +} // namespace detail + +FMT_BEGIN_EXPORT + +// A formatter specialization for natively supported types. +template +struct formatter::value != + detail::type::custom_type>> + : detail::native_formatter::value> { +}; + +template struct runtime_format_string { + basic_string_view str; +}; + +/// A compile-time format string. +template class basic_format_string { + private: + basic_string_view str_; + + public: + template < + typename S, + FMT_ENABLE_IF( + std::is_convertible>::value || + (detail::is_compile_string::value && + std::is_constructible, const S&>::value))> + FMT_CONSTEVAL FMT_ALWAYS_INLINE basic_format_string(const S& s) : str_(s) { + static_assert( + detail::count< + (std::is_base_of>::value && + std::is_reference::value)...>() == 0, + "passing views as lvalues is disallowed"); +#if FMT_USE_CONSTEVAL + if constexpr (detail::count_named_args() == + detail::count_statically_named_args()) { + using checker = + detail::format_string_checker...>; + detail::parse_format_string(str_, checker(s)); + } +#else + detail::check_format_string(s); +#endif + } + basic_format_string(runtime_format_string fmt) : str_(fmt.str) {} + + FMT_ALWAYS_INLINE operator basic_string_view() const { return str_; } + auto get() const -> basic_string_view { return str_; } +}; + +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 +// Workaround broken conversion on older gcc. +template using format_string = string_view; +inline auto runtime(string_view s) -> string_view { return s; } +#else +template +using format_string = basic_format_string...>; +/** + * Creates a runtime format string. + * + * **Example**: + * + * // Check format string at runtime instead of compile-time. + * fmt::print(fmt::runtime("{:d}"), "I am not a number"); + */ +inline auto runtime(string_view s) -> runtime_format_string<> { return {{s}}; } +#endif + +/// Formats a string and writes the output to `out`. +template , + char>::value)> +auto vformat_to(OutputIt&& out, string_view fmt, format_args args) + -> remove_cvref_t { + auto&& buf = detail::get_buffer(out); + detail::vformat_to(buf, fmt, args, {}); + return detail::get_iterator(buf, out); +} + +/** + * Formats `args` according to specifications in `fmt`, writes the result to + * the output iterator `out` and returns the iterator past the end of the output + * range. `format_to` does not append a terminating null character. + * + * **Example**: + * + * auto out = std::vector(); + * fmt::format_to(std::back_inserter(out), "{}", 42); + */ +template , + char>::value)> +FMT_INLINE auto format_to(OutputIt&& out, format_string fmt, T&&... args) + -> remove_cvref_t { + return vformat_to(FMT_FWD(out), fmt, fmt::make_format_args(args...)); +} + +template struct format_to_n_result { + /// Iterator past the end of the output range. + OutputIt out; + /// Total (not truncated) output size. + size_t size; +}; + +template ::value)> +auto vformat_to_n(OutputIt out, size_t n, string_view fmt, format_args args) + -> format_to_n_result { + using traits = detail::fixed_buffer_traits; + auto buf = detail::iterator_buffer(out, n); + detail::vformat_to(buf, fmt, args, {}); + return {buf.out(), buf.count()}; +} + +/** + * Formats `args` according to specifications in `fmt`, writes up to `n` + * characters of the result to the output iterator `out` and returns the total + * (not truncated) output size and the iterator past the end of the output + * range. `format_to_n` does not append a terminating null character. + */ +template ::value)> +FMT_INLINE auto format_to_n(OutputIt out, size_t n, format_string fmt, + T&&... args) -> format_to_n_result { + return vformat_to_n(out, n, fmt, fmt::make_format_args(args...)); +} + +template +struct format_to_result { + /// Iterator pointing to just after the last successful write in the range. + OutputIt out; + /// Specifies if the output was truncated. + bool truncated; + + FMT_CONSTEXPR operator OutputIt&() & { + detail::report_truncation(truncated); + return out; + } + FMT_CONSTEXPR operator const OutputIt&() const& { + detail::report_truncation(truncated); + return out; + } + FMT_CONSTEXPR operator OutputIt&&() && { + detail::report_truncation(truncated); + return static_cast(out); + } +}; + +template +auto vformat_to(char (&out)[N], string_view fmt, format_args args) + -> format_to_result { + auto result = vformat_to_n(out, N, fmt, args); + return {result.out, result.size > N}; +} + +template +FMT_INLINE auto format_to(char (&out)[N], format_string fmt, T&&... args) + -> format_to_result { + auto result = fmt::format_to_n(out, N, fmt, static_cast(args)...); + return {result.out, result.size > N}; +} + +/// Returns the number of chars in the output of `format(fmt, args...)`. +template +FMT_NODISCARD FMT_INLINE auto formatted_size(format_string fmt, + T&&... args) -> size_t { + auto buf = detail::counting_buffer<>(); + detail::vformat_to(buf, fmt, fmt::make_format_args(args...), {}); + return buf.count(); +} + +FMT_API void vprint(string_view fmt, format_args args); +FMT_API void vprint(FILE* f, string_view fmt, format_args args); +FMT_API void vprint_buffered(FILE* f, string_view fmt, format_args args); +FMT_API void vprintln(FILE* f, string_view fmt, format_args args); + +/** + * Formats `args` according to specifications in `fmt` and writes the output + * to `stdout`. + * + * **Example**: + * + * fmt::print("The answer is {}.", 42); + */ +template +FMT_INLINE void print(format_string fmt, T&&... args) { + const auto& vargs = fmt::make_format_args(args...); + if (!detail::use_utf8()) return detail::vprint_mojibake(stdout, fmt, vargs); + return detail::is_locking() ? vprint_buffered(stdout, fmt, vargs) + : vprint(fmt, vargs); +} + +/** + * Formats `args` according to specifications in `fmt` and writes the + * output to the file `f`. + * + * **Example**: + * + * fmt::print(stderr, "Don't {}!", "panic"); + */ +template +FMT_INLINE void print(FILE* f, format_string fmt, T&&... args) { + const auto& vargs = fmt::make_format_args(args...); + if (!detail::use_utf8()) return detail::vprint_mojibake(f, fmt, vargs); + return detail::is_locking() ? vprint_buffered(f, fmt, vargs) + : vprint(f, fmt, vargs); +} + +/// Formats `args` according to specifications in `fmt` and writes the output +/// to the file `f` followed by a newline. +template +FMT_INLINE void println(FILE* f, format_string fmt, T&&... args) { + const auto& vargs = fmt::make_format_args(args...); + return detail::use_utf8() ? vprintln(f, fmt, vargs) + : detail::vprint_mojibake(f, fmt, vargs, true); +} + +/// Formats `args` according to specifications in `fmt` and writes the output +/// to `stdout` followed by a newline. +template +FMT_INLINE void println(format_string fmt, T&&... args) { + return fmt::println(stdout, fmt, static_cast(args)...); +} + +FMT_END_EXPORT +FMT_GCC_PRAGMA("GCC pop_options") +FMT_END_NAMESPACE + +#ifdef FMT_HEADER_ONLY +# include "format.h" +#endif +#endif // FMT_BASE_H_ diff --git a/Submodules/fmt/include/fmt/chrono.h b/Submodules/fmt/include/fmt/chrono.h new file mode 100644 index 0000000..c93123f --- /dev/null +++ b/Submodules/fmt/include/fmt/chrono.h @@ -0,0 +1,2432 @@ +// Formatting library for C++ - chrono support +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_CHRONO_H_ +#define FMT_CHRONO_H_ + +#ifndef FMT_MODULE +# include +# include +# include // std::isfinite +# include // std::memcpy +# include +# include +# include +# include +# include +#endif + +#include "format.h" + +FMT_BEGIN_NAMESPACE + +// Check if std::chrono::local_t is available. +#ifndef FMT_USE_LOCAL_TIME +# ifdef __cpp_lib_chrono +# define FMT_USE_LOCAL_TIME (__cpp_lib_chrono >= 201907L) +# else +# define FMT_USE_LOCAL_TIME 0 +# endif +#endif + +// Check if std::chrono::utc_timestamp is available. +#ifndef FMT_USE_UTC_TIME +# ifdef __cpp_lib_chrono +# define FMT_USE_UTC_TIME (__cpp_lib_chrono >= 201907L) +# else +# define FMT_USE_UTC_TIME 0 +# endif +#endif + +// Enable tzset. +#ifndef FMT_USE_TZSET +// UWP doesn't provide _tzset. +# if FMT_HAS_INCLUDE("winapifamily.h") +# include +# endif +# if defined(_WIN32) && (!defined(WINAPI_FAMILY) || \ + (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP)) +# define FMT_USE_TZSET 1 +# else +# define FMT_USE_TZSET 0 +# endif +#endif + +// Enable safe chrono durations, unless explicitly disabled. +#ifndef FMT_SAFE_DURATION_CAST +# define FMT_SAFE_DURATION_CAST 1 +#endif +#if FMT_SAFE_DURATION_CAST + +// For conversion between std::chrono::durations without undefined +// behaviour or erroneous results. +// This is a stripped down version of duration_cast, for inclusion in fmt. +// See https://github.com/pauldreik/safe_duration_cast +// +// Copyright Paul Dreik 2019 +namespace safe_duration_cast { + +template ::value && + std::numeric_limits::is_signed == + std::numeric_limits::is_signed)> +FMT_CONSTEXPR auto lossless_integral_conversion(const From from, int& ec) + -> To { + ec = 0; + using F = std::numeric_limits; + using T = std::numeric_limits; + static_assert(F::is_integer, "From must be integral"); + static_assert(T::is_integer, "To must be integral"); + + // A and B are both signed, or both unsigned. + if (detail::const_check(F::digits <= T::digits)) { + // From fits in To without any problem. + } else { + // From does not always fit in To, resort to a dynamic check. + if (from < (T::min)() || from > (T::max)()) { + // outside range. + ec = 1; + return {}; + } + } + return static_cast(from); +} + +/// Converts From to To, without loss. If the dynamic value of from +/// can't be converted to To without loss, ec is set. +template ::value && + std::numeric_limits::is_signed != + std::numeric_limits::is_signed)> +FMT_CONSTEXPR auto lossless_integral_conversion(const From from, int& ec) + -> To { + ec = 0; + using F = std::numeric_limits; + using T = std::numeric_limits; + static_assert(F::is_integer, "From must be integral"); + static_assert(T::is_integer, "To must be integral"); + + if (detail::const_check(F::is_signed && !T::is_signed)) { + // From may be negative, not allowed! + if (fmt::detail::is_negative(from)) { + ec = 1; + return {}; + } + // From is positive. Can it always fit in To? + if (detail::const_check(F::digits > T::digits) && + from > static_cast(detail::max_value())) { + ec = 1; + return {}; + } + } + + if (detail::const_check(!F::is_signed && T::is_signed && + F::digits >= T::digits) && + from > static_cast(detail::max_value())) { + ec = 1; + return {}; + } + return static_cast(from); // Lossless conversion. +} + +template ::value)> +FMT_CONSTEXPR auto lossless_integral_conversion(const From from, int& ec) + -> To { + ec = 0; + return from; +} // function + +// clang-format off +/** + * converts From to To if possible, otherwise ec is set. + * + * input | output + * ---------------------------------|--------------- + * NaN | NaN + * Inf | Inf + * normal, fits in output | converted (possibly lossy) + * normal, does not fit in output | ec is set + * subnormal | best effort + * -Inf | -Inf + */ +// clang-format on +template ::value)> +FMT_CONSTEXPR auto safe_float_conversion(const From from, int& ec) -> To { + ec = 0; + using T = std::numeric_limits; + static_assert(std::is_floating_point::value, "From must be floating"); + static_assert(std::is_floating_point::value, "To must be floating"); + + // catch the only happy case + if (std::isfinite(from)) { + if (from >= T::lowest() && from <= (T::max)()) { + return static_cast(from); + } + // not within range. + ec = 1; + return {}; + } + + // nan and inf will be preserved + return static_cast(from); +} // function + +template ::value)> +FMT_CONSTEXPR auto safe_float_conversion(const From from, int& ec) -> To { + ec = 0; + static_assert(std::is_floating_point::value, "From must be floating"); + return from; +} + +/// Safe duration cast between integral durations +template ::value), + FMT_ENABLE_IF(std::is_integral::value)> +auto safe_duration_cast(std::chrono::duration from, + int& ec) -> To { + using From = std::chrono::duration; + ec = 0; + // the basic idea is that we need to convert from count() in the from type + // to count() in the To type, by multiplying it with this: + struct Factor + : std::ratio_divide {}; + + static_assert(Factor::num > 0, "num must be positive"); + static_assert(Factor::den > 0, "den must be positive"); + + // the conversion is like this: multiply from.count() with Factor::num + // /Factor::den and convert it to To::rep, all this without + // overflow/underflow. let's start by finding a suitable type that can hold + // both To, From and Factor::num + using IntermediateRep = + typename std::common_type::type; + + // safe conversion to IntermediateRep + IntermediateRep count = + lossless_integral_conversion(from.count(), ec); + if (ec) return {}; + // multiply with Factor::num without overflow or underflow + if (detail::const_check(Factor::num != 1)) { + const auto max1 = detail::max_value() / Factor::num; + if (count > max1) { + ec = 1; + return {}; + } + const auto min1 = + (std::numeric_limits::min)() / Factor::num; + if (detail::const_check(!std::is_unsigned::value) && + count < min1) { + ec = 1; + return {}; + } + count *= Factor::num; + } + + if (detail::const_check(Factor::den != 1)) count /= Factor::den; + auto tocount = lossless_integral_conversion(count, ec); + return ec ? To() : To(tocount); +} + +/// Safe duration_cast between floating point durations +template ::value), + FMT_ENABLE_IF(std::is_floating_point::value)> +auto safe_duration_cast(std::chrono::duration from, + int& ec) -> To { + using From = std::chrono::duration; + ec = 0; + if (std::isnan(from.count())) { + // nan in, gives nan out. easy. + return To{std::numeric_limits::quiet_NaN()}; + } + // maybe we should also check if from is denormal, and decide what to do about + // it. + + // +-inf should be preserved. + if (std::isinf(from.count())) { + return To{from.count()}; + } + + // the basic idea is that we need to convert from count() in the from type + // to count() in the To type, by multiplying it with this: + struct Factor + : std::ratio_divide {}; + + static_assert(Factor::num > 0, "num must be positive"); + static_assert(Factor::den > 0, "den must be positive"); + + // the conversion is like this: multiply from.count() with Factor::num + // /Factor::den and convert it to To::rep, all this without + // overflow/underflow. let's start by finding a suitable type that can hold + // both To, From and Factor::num + using IntermediateRep = + typename std::common_type::type; + + // force conversion of From::rep -> IntermediateRep to be safe, + // even if it will never happen be narrowing in this context. + IntermediateRep count = + safe_float_conversion(from.count(), ec); + if (ec) { + return {}; + } + + // multiply with Factor::num without overflow or underflow + if (detail::const_check(Factor::num != 1)) { + constexpr auto max1 = detail::max_value() / + static_cast(Factor::num); + if (count > max1) { + ec = 1; + return {}; + } + constexpr auto min1 = std::numeric_limits::lowest() / + static_cast(Factor::num); + if (count < min1) { + ec = 1; + return {}; + } + count *= static_cast(Factor::num); + } + + // this can't go wrong, right? den>0 is checked earlier. + if (detail::const_check(Factor::den != 1)) { + using common_t = typename std::common_type::type; + count /= static_cast(Factor::den); + } + + // convert to the to type, safely + using ToRep = typename To::rep; + + const ToRep tocount = safe_float_conversion(count, ec); + if (ec) { + return {}; + } + return To{tocount}; +} +} // namespace safe_duration_cast +#endif + +// Prevents expansion of a preceding token as a function-style macro. +// Usage: f FMT_NOMACRO() +#define FMT_NOMACRO + +namespace detail { +template struct null {}; +inline auto localtime_r FMT_NOMACRO(...) -> null<> { return null<>(); } +inline auto localtime_s(...) -> null<> { return null<>(); } +inline auto gmtime_r(...) -> null<> { return null<>(); } +inline auto gmtime_s(...) -> null<> { return null<>(); } + +// It is defined here and not in ostream.h because the latter has expensive +// includes. +template class formatbuf : public Streambuf { + private: + using char_type = typename Streambuf::char_type; + using streamsize = decltype(std::declval().sputn(nullptr, 0)); + using int_type = typename Streambuf::int_type; + using traits_type = typename Streambuf::traits_type; + + buffer& buffer_; + + public: + explicit formatbuf(buffer& buf) : buffer_(buf) {} + + protected: + // The put area is always empty. This makes the implementation simpler and has + // the advantage that the streambuf and the buffer are always in sync and + // sputc never writes into uninitialized memory. A disadvantage is that each + // call to sputc always results in a (virtual) call to overflow. There is no + // disadvantage here for sputn since this always results in a call to xsputn. + + auto overflow(int_type ch) -> int_type override { + if (!traits_type::eq_int_type(ch, traits_type::eof())) + buffer_.push_back(static_cast(ch)); + return ch; + } + + auto xsputn(const char_type* s, streamsize count) -> streamsize override { + buffer_.append(s, s + count); + return count; + } +}; + +inline auto get_classic_locale() -> const std::locale& { + static const auto& locale = std::locale::classic(); + return locale; +} + +template struct codecvt_result { + static constexpr const size_t max_size = 32; + CodeUnit buf[max_size]; + CodeUnit* end; +}; + +template +void write_codecvt(codecvt_result& out, string_view in_buf, + const std::locale& loc) { +#if FMT_CLANG_VERSION +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wdeprecated" + auto& f = std::use_facet>(loc); +# pragma clang diagnostic pop +#else + auto& f = std::use_facet>(loc); +#endif + auto mb = std::mbstate_t(); + const char* from_next = nullptr; + auto result = f.in(mb, in_buf.begin(), in_buf.end(), from_next, + std::begin(out.buf), std::end(out.buf), out.end); + if (result != std::codecvt_base::ok) + FMT_THROW(format_error("failed to format time")); +} + +template +auto write_encoded_tm_str(OutputIt out, string_view in, const std::locale& loc) + -> OutputIt { + if (detail::use_utf8() && loc != get_classic_locale()) { + // char16_t and char32_t codecvts are broken in MSVC (linkage errors) and + // gcc-4. +#if FMT_MSC_VERSION != 0 || \ + (defined(__GLIBCXX__) && \ + (!defined(_GLIBCXX_USE_DUAL_ABI) || _GLIBCXX_USE_DUAL_ABI == 0)) + // The _GLIBCXX_USE_DUAL_ABI macro is always defined in libstdc++ from gcc-5 + // and newer. + using code_unit = wchar_t; +#else + using code_unit = char32_t; +#endif + + using unit_t = codecvt_result; + unit_t unit; + write_codecvt(unit, in, loc); + // In UTF-8 is used one to four one-byte code units. + auto u = + to_utf8>(); + if (!u.convert({unit.buf, to_unsigned(unit.end - unit.buf)})) + FMT_THROW(format_error("failed to format time")); + return copy(u.c_str(), u.c_str() + u.size(), out); + } + return copy(in.data(), in.data() + in.size(), out); +} + +template ::value)> +auto write_tm_str(OutputIt out, string_view sv, const std::locale& loc) + -> OutputIt { + codecvt_result unit; + write_codecvt(unit, sv, loc); + return copy(unit.buf, unit.end, out); +} + +template ::value)> +auto write_tm_str(OutputIt out, string_view sv, const std::locale& loc) + -> OutputIt { + return write_encoded_tm_str(out, sv, loc); +} + +template +inline void do_write(buffer& buf, const std::tm& time, + const std::locale& loc, char format, char modifier) { + auto&& format_buf = formatbuf>(buf); + auto&& os = std::basic_ostream(&format_buf); + os.imbue(loc); + const auto& facet = std::use_facet>(loc); + auto end = facet.put(os, os, Char(' '), &time, format, modifier); + if (end.failed()) FMT_THROW(format_error("failed to format time")); +} + +template ::value)> +auto write(OutputIt out, const std::tm& time, const std::locale& loc, + char format, char modifier = 0) -> OutputIt { + auto&& buf = get_buffer(out); + do_write(buf, time, loc, format, modifier); + return get_iterator(buf, out); +} + +template ::value)> +auto write(OutputIt out, const std::tm& time, const std::locale& loc, + char format, char modifier = 0) -> OutputIt { + auto&& buf = basic_memory_buffer(); + do_write(buf, time, loc, format, modifier); + return write_encoded_tm_str(out, string_view(buf.data(), buf.size()), loc); +} + +template +struct is_same_arithmetic_type + : public std::integral_constant::value && + std::is_integral::value) || + (std::is_floating_point::value && + std::is_floating_point::value)> { +}; + +template < + typename To, typename FromRep, typename FromPeriod, + FMT_ENABLE_IF(is_same_arithmetic_type::value)> +auto fmt_duration_cast(std::chrono::duration from) -> To { +#if FMT_SAFE_DURATION_CAST + // Throwing version of safe_duration_cast is only available for + // integer to integer or float to float casts. + int ec; + To to = safe_duration_cast::safe_duration_cast(from, ec); + if (ec) FMT_THROW(format_error("cannot format duration")); + return to; +#else + // Standard duration cast, may overflow. + return std::chrono::duration_cast(from); +#endif +} + +template < + typename To, typename FromRep, typename FromPeriod, + FMT_ENABLE_IF(!is_same_arithmetic_type::value)> +auto fmt_duration_cast(std::chrono::duration from) -> To { + // Mixed integer <-> float cast is not supported by safe_duration_cast. + return std::chrono::duration_cast(from); +} + +template +auto to_time_t( + std::chrono::time_point time_point) + -> std::time_t { + // Cannot use std::chrono::system_clock::to_time_t since this would first + // require a cast to std::chrono::system_clock::time_point, which could + // overflow. + return fmt_duration_cast>( + time_point.time_since_epoch()) + .count(); +} +} // namespace detail + +FMT_BEGIN_EXPORT + +/** + * Converts given time since epoch as `std::time_t` value into calendar time, + * expressed in local time. Unlike `std::localtime`, this function is + * thread-safe on most platforms. + */ +inline auto localtime(std::time_t time) -> std::tm { + struct dispatcher { + std::time_t time_; + std::tm tm_; + + dispatcher(std::time_t t) : time_(t) {} + + auto run() -> bool { + using namespace fmt::detail; + return handle(localtime_r(&time_, &tm_)); + } + + auto handle(std::tm* tm) -> bool { return tm != nullptr; } + + auto handle(detail::null<>) -> bool { + using namespace fmt::detail; + return fallback(localtime_s(&tm_, &time_)); + } + + auto fallback(int res) -> bool { return res == 0; } + +#if !FMT_MSC_VERSION + auto fallback(detail::null<>) -> bool { + using namespace fmt::detail; + std::tm* tm = std::localtime(&time_); + if (tm) tm_ = *tm; + return tm != nullptr; + } +#endif + }; + dispatcher lt(time); + // Too big time values may be unsupported. + if (!lt.run()) FMT_THROW(format_error("time_t value out of range")); + return lt.tm_; +} + +#if FMT_USE_LOCAL_TIME +template +inline auto localtime(std::chrono::local_time time) -> std::tm { + return localtime( + detail::to_time_t(std::chrono::current_zone()->to_sys(time))); +} +#endif + +/** + * Converts given time since epoch as `std::time_t` value into calendar time, + * expressed in Coordinated Universal Time (UTC). Unlike `std::gmtime`, this + * function is thread-safe on most platforms. + */ +inline auto gmtime(std::time_t time) -> std::tm { + struct dispatcher { + std::time_t time_; + std::tm tm_; + + dispatcher(std::time_t t) : time_(t) {} + + auto run() -> bool { + using namespace fmt::detail; + return handle(gmtime_r(&time_, &tm_)); + } + + auto handle(std::tm* tm) -> bool { return tm != nullptr; } + + auto handle(detail::null<>) -> bool { + using namespace fmt::detail; + return fallback(gmtime_s(&tm_, &time_)); + } + + auto fallback(int res) -> bool { return res == 0; } + +#if !FMT_MSC_VERSION + auto fallback(detail::null<>) -> bool { + std::tm* tm = std::gmtime(&time_); + if (tm) tm_ = *tm; + return tm != nullptr; + } +#endif + }; + auto gt = dispatcher(time); + // Too big time values may be unsupported. + if (!gt.run()) FMT_THROW(format_error("time_t value out of range")); + return gt.tm_; +} + +template +inline auto gmtime( + std::chrono::time_point time_point) + -> std::tm { + return gmtime(detail::to_time_t(time_point)); +} + +namespace detail { + +// Writes two-digit numbers a, b and c separated by sep to buf. +// The method by Pavel Novikov based on +// https://johnnylee-sde.github.io/Fast-unsigned-integer-to-time-string/. +inline void write_digit2_separated(char* buf, unsigned a, unsigned b, + unsigned c, char sep) { + unsigned long long digits = + a | (b << 24) | (static_cast(c) << 48); + // Convert each value to BCD. + // We have x = a * 10 + b and we want to convert it to BCD y = a * 16 + b. + // The difference is + // y - x = a * 6 + // a can be found from x: + // a = floor(x / 10) + // then + // y = x + a * 6 = x + floor(x / 10) * 6 + // floor(x / 10) is (x * 205) >> 11 (needs 16 bits). + digits += (((digits * 205) >> 11) & 0x000f00000f00000f) * 6; + // Put low nibbles to high bytes and high nibbles to low bytes. + digits = ((digits & 0x00f00000f00000f0) >> 4) | + ((digits & 0x000f00000f00000f) << 8); + auto usep = static_cast(sep); + // Add ASCII '0' to each digit byte and insert separators. + digits |= 0x3030003030003030 | (usep << 16) | (usep << 40); + + constexpr const size_t len = 8; + if (const_check(is_big_endian())) { + char tmp[len]; + std::memcpy(tmp, &digits, len); + std::reverse_copy(tmp, tmp + len, buf); + } else { + std::memcpy(buf, &digits, len); + } +} + +template +FMT_CONSTEXPR inline auto get_units() -> const char* { + if (std::is_same::value) return "as"; + if (std::is_same::value) return "fs"; + if (std::is_same::value) return "ps"; + if (std::is_same::value) return "ns"; + if (std::is_same::value) return "µs"; + if (std::is_same::value) return "ms"; + if (std::is_same::value) return "cs"; + if (std::is_same::value) return "ds"; + if (std::is_same>::value) return "s"; + if (std::is_same::value) return "das"; + if (std::is_same::value) return "hs"; + if (std::is_same::value) return "ks"; + if (std::is_same::value) return "Ms"; + if (std::is_same::value) return "Gs"; + if (std::is_same::value) return "Ts"; + if (std::is_same::value) return "Ps"; + if (std::is_same::value) return "Es"; + if (std::is_same>::value) return "min"; + if (std::is_same>::value) return "h"; + if (std::is_same>::value) return "d"; + return nullptr; +} + +enum class numeric_system { + standard, + // Alternative numeric system, e.g. 十二 instead of 12 in ja_JP locale. + alternative +}; + +// Glibc extensions for formatting numeric values. +enum class pad_type { + // Pad a numeric result string with zeros (the default). + zero, + // Do not pad a numeric result string. + none, + // Pad a numeric result string with spaces. + space, +}; + +template +auto write_padding(OutputIt out, pad_type pad, int width) -> OutputIt { + if (pad == pad_type::none) return out; + return detail::fill_n(out, width, pad == pad_type::space ? ' ' : '0'); +} + +template +auto write_padding(OutputIt out, pad_type pad) -> OutputIt { + if (pad != pad_type::none) *out++ = pad == pad_type::space ? ' ' : '0'; + return out; +} + +// Parses a put_time-like format string and invokes handler actions. +template +FMT_CONSTEXPR auto parse_chrono_format(const Char* begin, const Char* end, + Handler&& handler) -> const Char* { + if (begin == end || *begin == '}') return begin; + if (*begin != '%') FMT_THROW(format_error("invalid format")); + auto ptr = begin; + while (ptr != end) { + pad_type pad = pad_type::zero; + auto c = *ptr; + if (c == '}') break; + if (c != '%') { + ++ptr; + continue; + } + if (begin != ptr) handler.on_text(begin, ptr); + ++ptr; // consume '%' + if (ptr == end) FMT_THROW(format_error("invalid format")); + c = *ptr; + switch (c) { + case '_': + pad = pad_type::space; + ++ptr; + break; + case '-': + pad = pad_type::none; + ++ptr; + break; + } + if (ptr == end) FMT_THROW(format_error("invalid format")); + c = *ptr++; + switch (c) { + case '%': + handler.on_text(ptr - 1, ptr); + break; + case 'n': { + const Char newline[] = {'\n'}; + handler.on_text(newline, newline + 1); + break; + } + case 't': { + const Char tab[] = {'\t'}; + handler.on_text(tab, tab + 1); + break; + } + // Year: + case 'Y': + handler.on_year(numeric_system::standard); + break; + case 'y': + handler.on_short_year(numeric_system::standard); + break; + case 'C': + handler.on_century(numeric_system::standard); + break; + case 'G': + handler.on_iso_week_based_year(); + break; + case 'g': + handler.on_iso_week_based_short_year(); + break; + // Day of the week: + case 'a': + handler.on_abbr_weekday(); + break; + case 'A': + handler.on_full_weekday(); + break; + case 'w': + handler.on_dec0_weekday(numeric_system::standard); + break; + case 'u': + handler.on_dec1_weekday(numeric_system::standard); + break; + // Month: + case 'b': + case 'h': + handler.on_abbr_month(); + break; + case 'B': + handler.on_full_month(); + break; + case 'm': + handler.on_dec_month(numeric_system::standard); + break; + // Day of the year/month: + case 'U': + handler.on_dec0_week_of_year(numeric_system::standard, pad); + break; + case 'W': + handler.on_dec1_week_of_year(numeric_system::standard, pad); + break; + case 'V': + handler.on_iso_week_of_year(numeric_system::standard, pad); + break; + case 'j': + handler.on_day_of_year(); + break; + case 'd': + handler.on_day_of_month(numeric_system::standard, pad); + break; + case 'e': + handler.on_day_of_month(numeric_system::standard, pad_type::space); + break; + // Hour, minute, second: + case 'H': + handler.on_24_hour(numeric_system::standard, pad); + break; + case 'I': + handler.on_12_hour(numeric_system::standard, pad); + break; + case 'M': + handler.on_minute(numeric_system::standard, pad); + break; + case 'S': + handler.on_second(numeric_system::standard, pad); + break; + // Other: + case 'c': + handler.on_datetime(numeric_system::standard); + break; + case 'x': + handler.on_loc_date(numeric_system::standard); + break; + case 'X': + handler.on_loc_time(numeric_system::standard); + break; + case 'D': + handler.on_us_date(); + break; + case 'F': + handler.on_iso_date(); + break; + case 'r': + handler.on_12_hour_time(); + break; + case 'R': + handler.on_24_hour_time(); + break; + case 'T': + handler.on_iso_time(); + break; + case 'p': + handler.on_am_pm(); + break; + case 'Q': + handler.on_duration_value(); + break; + case 'q': + handler.on_duration_unit(); + break; + case 'z': + handler.on_utc_offset(numeric_system::standard); + break; + case 'Z': + handler.on_tz_name(); + break; + // Alternative representation: + case 'E': { + if (ptr == end) FMT_THROW(format_error("invalid format")); + c = *ptr++; + switch (c) { + case 'Y': + handler.on_year(numeric_system::alternative); + break; + case 'y': + handler.on_offset_year(); + break; + case 'C': + handler.on_century(numeric_system::alternative); + break; + case 'c': + handler.on_datetime(numeric_system::alternative); + break; + case 'x': + handler.on_loc_date(numeric_system::alternative); + break; + case 'X': + handler.on_loc_time(numeric_system::alternative); + break; + case 'z': + handler.on_utc_offset(numeric_system::alternative); + break; + default: + FMT_THROW(format_error("invalid format")); + } + break; + } + case 'O': + if (ptr == end) FMT_THROW(format_error("invalid format")); + c = *ptr++; + switch (c) { + case 'y': + handler.on_short_year(numeric_system::alternative); + break; + case 'm': + handler.on_dec_month(numeric_system::alternative); + break; + case 'U': + handler.on_dec0_week_of_year(numeric_system::alternative, pad); + break; + case 'W': + handler.on_dec1_week_of_year(numeric_system::alternative, pad); + break; + case 'V': + handler.on_iso_week_of_year(numeric_system::alternative, pad); + break; + case 'd': + handler.on_day_of_month(numeric_system::alternative, pad); + break; + case 'e': + handler.on_day_of_month(numeric_system::alternative, pad_type::space); + break; + case 'w': + handler.on_dec0_weekday(numeric_system::alternative); + break; + case 'u': + handler.on_dec1_weekday(numeric_system::alternative); + break; + case 'H': + handler.on_24_hour(numeric_system::alternative, pad); + break; + case 'I': + handler.on_12_hour(numeric_system::alternative, pad); + break; + case 'M': + handler.on_minute(numeric_system::alternative, pad); + break; + case 'S': + handler.on_second(numeric_system::alternative, pad); + break; + case 'z': + handler.on_utc_offset(numeric_system::alternative); + break; + default: + FMT_THROW(format_error("invalid format")); + } + break; + default: + FMT_THROW(format_error("invalid format")); + } + begin = ptr; + } + if (begin != ptr) handler.on_text(begin, ptr); + return ptr; +} + +template struct null_chrono_spec_handler { + FMT_CONSTEXPR void unsupported() { + static_cast(this)->unsupported(); + } + FMT_CONSTEXPR void on_year(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_short_year(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_offset_year() { unsupported(); } + FMT_CONSTEXPR void on_century(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_iso_week_based_year() { unsupported(); } + FMT_CONSTEXPR void on_iso_week_based_short_year() { unsupported(); } + FMT_CONSTEXPR void on_abbr_weekday() { unsupported(); } + FMT_CONSTEXPR void on_full_weekday() { unsupported(); } + FMT_CONSTEXPR void on_dec0_weekday(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_dec1_weekday(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_abbr_month() { unsupported(); } + FMT_CONSTEXPR void on_full_month() { unsupported(); } + FMT_CONSTEXPR void on_dec_month(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_dec0_week_of_year(numeric_system, pad_type) { + unsupported(); + } + FMT_CONSTEXPR void on_dec1_week_of_year(numeric_system, pad_type) { + unsupported(); + } + FMT_CONSTEXPR void on_iso_week_of_year(numeric_system, pad_type) { + unsupported(); + } + FMT_CONSTEXPR void on_day_of_year() { unsupported(); } + FMT_CONSTEXPR void on_day_of_month(numeric_system, pad_type) { + unsupported(); + } + FMT_CONSTEXPR void on_24_hour(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_12_hour(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_minute(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_second(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_datetime(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_loc_date(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_loc_time(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_us_date() { unsupported(); } + FMT_CONSTEXPR void on_iso_date() { unsupported(); } + FMT_CONSTEXPR void on_12_hour_time() { unsupported(); } + FMT_CONSTEXPR void on_24_hour_time() { unsupported(); } + FMT_CONSTEXPR void on_iso_time() { unsupported(); } + FMT_CONSTEXPR void on_am_pm() { unsupported(); } + FMT_CONSTEXPR void on_duration_value() { unsupported(); } + FMT_CONSTEXPR void on_duration_unit() { unsupported(); } + FMT_CONSTEXPR void on_utc_offset(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_tz_name() { unsupported(); } +}; + +struct tm_format_checker : null_chrono_spec_handler { + FMT_NORETURN void unsupported() { FMT_THROW(format_error("no format")); } + + template + FMT_CONSTEXPR void on_text(const Char*, const Char*) {} + FMT_CONSTEXPR void on_year(numeric_system) {} + FMT_CONSTEXPR void on_short_year(numeric_system) {} + FMT_CONSTEXPR void on_offset_year() {} + FMT_CONSTEXPR void on_century(numeric_system) {} + FMT_CONSTEXPR void on_iso_week_based_year() {} + FMT_CONSTEXPR void on_iso_week_based_short_year() {} + FMT_CONSTEXPR void on_abbr_weekday() {} + FMT_CONSTEXPR void on_full_weekday() {} + FMT_CONSTEXPR void on_dec0_weekday(numeric_system) {} + FMT_CONSTEXPR void on_dec1_weekday(numeric_system) {} + FMT_CONSTEXPR void on_abbr_month() {} + FMT_CONSTEXPR void on_full_month() {} + FMT_CONSTEXPR void on_dec_month(numeric_system) {} + FMT_CONSTEXPR void on_dec0_week_of_year(numeric_system, pad_type) {} + FMT_CONSTEXPR void on_dec1_week_of_year(numeric_system, pad_type) {} + FMT_CONSTEXPR void on_iso_week_of_year(numeric_system, pad_type) {} + FMT_CONSTEXPR void on_day_of_year() {} + FMT_CONSTEXPR void on_day_of_month(numeric_system, pad_type) {} + FMT_CONSTEXPR void on_24_hour(numeric_system, pad_type) {} + FMT_CONSTEXPR void on_12_hour(numeric_system, pad_type) {} + FMT_CONSTEXPR void on_minute(numeric_system, pad_type) {} + FMT_CONSTEXPR void on_second(numeric_system, pad_type) {} + FMT_CONSTEXPR void on_datetime(numeric_system) {} + FMT_CONSTEXPR void on_loc_date(numeric_system) {} + FMT_CONSTEXPR void on_loc_time(numeric_system) {} + FMT_CONSTEXPR void on_us_date() {} + FMT_CONSTEXPR void on_iso_date() {} + FMT_CONSTEXPR void on_12_hour_time() {} + FMT_CONSTEXPR void on_24_hour_time() {} + FMT_CONSTEXPR void on_iso_time() {} + FMT_CONSTEXPR void on_am_pm() {} + FMT_CONSTEXPR void on_utc_offset(numeric_system) {} + FMT_CONSTEXPR void on_tz_name() {} +}; + +inline auto tm_wday_full_name(int wday) -> const char* { + static constexpr const char* full_name_list[] = { + "Sunday", "Monday", "Tuesday", "Wednesday", + "Thursday", "Friday", "Saturday"}; + return wday >= 0 && wday <= 6 ? full_name_list[wday] : "?"; +} +inline auto tm_wday_short_name(int wday) -> const char* { + static constexpr const char* short_name_list[] = {"Sun", "Mon", "Tue", "Wed", + "Thu", "Fri", "Sat"}; + return wday >= 0 && wday <= 6 ? short_name_list[wday] : "???"; +} + +inline auto tm_mon_full_name(int mon) -> const char* { + static constexpr const char* full_name_list[] = { + "January", "February", "March", "April", "May", "June", + "July", "August", "September", "October", "November", "December"}; + return mon >= 0 && mon <= 11 ? full_name_list[mon] : "?"; +} +inline auto tm_mon_short_name(int mon) -> const char* { + static constexpr const char* short_name_list[] = { + "Jan", "Feb", "Mar", "Apr", "May", "Jun", + "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", + }; + return mon >= 0 && mon <= 11 ? short_name_list[mon] : "???"; +} + +template +struct has_member_data_tm_gmtoff : std::false_type {}; +template +struct has_member_data_tm_gmtoff> + : std::true_type {}; + +template +struct has_member_data_tm_zone : std::false_type {}; +template +struct has_member_data_tm_zone> + : std::true_type {}; + +#if FMT_USE_TZSET +inline void tzset_once() { + static bool init = []() -> bool { + _tzset(); + return true; + }(); + ignore_unused(init); +} +#endif + +// Converts value to Int and checks that it's in the range [0, upper). +template ::value)> +inline auto to_nonnegative_int(T value, Int upper) -> Int { + if (!std::is_unsigned::value && + (value < 0 || to_unsigned(value) > to_unsigned(upper))) { + FMT_THROW(fmt::format_error("chrono value is out of range")); + } + return static_cast(value); +} +template ::value)> +inline auto to_nonnegative_int(T value, Int upper) -> Int { + auto int_value = static_cast(value); + if (int_value < 0 || value > static_cast(upper)) + FMT_THROW(format_error("invalid value")); + return int_value; +} + +constexpr auto pow10(std::uint32_t n) -> long long { + return n == 0 ? 1 : 10 * pow10(n - 1); +} + +// Counts the number of fractional digits in the range [0, 18] according to the +// C++20 spec. If more than 18 fractional digits are required then returns 6 for +// microseconds precision. +template () / 10)> +struct count_fractional_digits { + static constexpr int value = + Num % Den == 0 ? N : count_fractional_digits::value; +}; + +// Base case that doesn't instantiate any more templates +// in order to avoid overflow. +template +struct count_fractional_digits { + static constexpr int value = (Num % Den == 0) ? N : 6; +}; + +// Format subseconds which are given as an integer type with an appropriate +// number of digits. +template +void write_fractional_seconds(OutputIt& out, Duration d, int precision = -1) { + constexpr auto num_fractional_digits = + count_fractional_digits::value; + + using subsecond_precision = std::chrono::duration< + typename std::common_type::type, + std::ratio<1, detail::pow10(num_fractional_digits)>>; + + const auto fractional = d - fmt_duration_cast(d); + const auto subseconds = + std::chrono::treat_as_floating_point< + typename subsecond_precision::rep>::value + ? fractional.count() + : fmt_duration_cast(fractional).count(); + auto n = static_cast>(subseconds); + const int num_digits = detail::count_digits(n); + + int leading_zeroes = (std::max)(0, num_fractional_digits - num_digits); + if (precision < 0) { + FMT_ASSERT(!std::is_floating_point::value, ""); + if (std::ratio_less::value) { + *out++ = '.'; + out = detail::fill_n(out, leading_zeroes, '0'); + out = format_decimal(out, n, num_digits).end; + } + } else if (precision > 0) { + *out++ = '.'; + leading_zeroes = (std::min)(leading_zeroes, precision); + int remaining = precision - leading_zeroes; + out = detail::fill_n(out, leading_zeroes, '0'); + if (remaining < num_digits) { + int num_truncated_digits = num_digits - remaining; + n /= to_unsigned(detail::pow10(to_unsigned(num_truncated_digits))); + if (n) { + out = format_decimal(out, n, remaining).end; + } + return; + } + if (n) { + out = format_decimal(out, n, num_digits).end; + remaining -= num_digits; + } + out = detail::fill_n(out, remaining, '0'); + } +} + +// Format subseconds which are given as a floating point type with an +// appropriate number of digits. We cannot pass the Duration here, as we +// explicitly need to pass the Rep value in the chrono_formatter. +template +void write_floating_seconds(memory_buffer& buf, Duration duration, + int num_fractional_digits = -1) { + using rep = typename Duration::rep; + FMT_ASSERT(std::is_floating_point::value, ""); + + auto val = duration.count(); + + if (num_fractional_digits < 0) { + // For `std::round` with fallback to `round`: + // On some toolchains `std::round` is not available (e.g. GCC 6). + using namespace std; + num_fractional_digits = + count_fractional_digits::value; + if (num_fractional_digits < 6 && static_cast(round(val)) != val) + num_fractional_digits = 6; + } + + fmt::format_to(std::back_inserter(buf), FMT_STRING("{:.{}f}"), + std::fmod(val * static_cast(Duration::period::num) / + static_cast(Duration::period::den), + static_cast(60)), + num_fractional_digits); +} + +template +class tm_writer { + private: + static constexpr int days_per_week = 7; + + const std::locale& loc_; + const bool is_classic_; + OutputIt out_; + const Duration* subsecs_; + const std::tm& tm_; + + auto tm_sec() const noexcept -> int { + FMT_ASSERT(tm_.tm_sec >= 0 && tm_.tm_sec <= 61, ""); + return tm_.tm_sec; + } + auto tm_min() const noexcept -> int { + FMT_ASSERT(tm_.tm_min >= 0 && tm_.tm_min <= 59, ""); + return tm_.tm_min; + } + auto tm_hour() const noexcept -> int { + FMT_ASSERT(tm_.tm_hour >= 0 && tm_.tm_hour <= 23, ""); + return tm_.tm_hour; + } + auto tm_mday() const noexcept -> int { + FMT_ASSERT(tm_.tm_mday >= 1 && tm_.tm_mday <= 31, ""); + return tm_.tm_mday; + } + auto tm_mon() const noexcept -> int { + FMT_ASSERT(tm_.tm_mon >= 0 && tm_.tm_mon <= 11, ""); + return tm_.tm_mon; + } + auto tm_year() const noexcept -> long long { return 1900ll + tm_.tm_year; } + auto tm_wday() const noexcept -> int { + FMT_ASSERT(tm_.tm_wday >= 0 && tm_.tm_wday <= 6, ""); + return tm_.tm_wday; + } + auto tm_yday() const noexcept -> int { + FMT_ASSERT(tm_.tm_yday >= 0 && tm_.tm_yday <= 365, ""); + return tm_.tm_yday; + } + + auto tm_hour12() const noexcept -> int { + const auto h = tm_hour(); + const auto z = h < 12 ? h : h - 12; + return z == 0 ? 12 : z; + } + + // POSIX and the C Standard are unclear or inconsistent about what %C and %y + // do if the year is negative or exceeds 9999. Use the convention that %C + // concatenated with %y yields the same output as %Y, and that %Y contains at + // least 4 characters, with more only if necessary. + auto split_year_lower(long long year) const noexcept -> int { + auto l = year % 100; + if (l < 0) l = -l; // l in [0, 99] + return static_cast(l); + } + + // Algorithm: https://en.wikipedia.org/wiki/ISO_week_date. + auto iso_year_weeks(long long curr_year) const noexcept -> int { + const auto prev_year = curr_year - 1; + const auto curr_p = + (curr_year + curr_year / 4 - curr_year / 100 + curr_year / 400) % + days_per_week; + const auto prev_p = + (prev_year + prev_year / 4 - prev_year / 100 + prev_year / 400) % + days_per_week; + return 52 + ((curr_p == 4 || prev_p == 3) ? 1 : 0); + } + auto iso_week_num(int tm_yday, int tm_wday) const noexcept -> int { + return (tm_yday + 11 - (tm_wday == 0 ? days_per_week : tm_wday)) / + days_per_week; + } + auto tm_iso_week_year() const noexcept -> long long { + const auto year = tm_year(); + const auto w = iso_week_num(tm_yday(), tm_wday()); + if (w < 1) return year - 1; + if (w > iso_year_weeks(year)) return year + 1; + return year; + } + auto tm_iso_week_of_year() const noexcept -> int { + const auto year = tm_year(); + const auto w = iso_week_num(tm_yday(), tm_wday()); + if (w < 1) return iso_year_weeks(year - 1); + if (w > iso_year_weeks(year)) return 1; + return w; + } + + void write1(int value) { + *out_++ = static_cast('0' + to_unsigned(value) % 10); + } + void write2(int value) { + const char* d = digits2(to_unsigned(value) % 100); + *out_++ = *d++; + *out_++ = *d; + } + void write2(int value, pad_type pad) { + unsigned int v = to_unsigned(value) % 100; + if (v >= 10) { + const char* d = digits2(v); + *out_++ = *d++; + *out_++ = *d; + } else { + out_ = detail::write_padding(out_, pad); + *out_++ = static_cast('0' + v); + } + } + + void write_year_extended(long long year) { + // At least 4 characters. + int width = 4; + if (year < 0) { + *out_++ = '-'; + year = 0 - year; + --width; + } + uint32_or_64_or_128_t n = to_unsigned(year); + const int num_digits = count_digits(n); + if (width > num_digits) + out_ = detail::fill_n(out_, width - num_digits, '0'); + out_ = format_decimal(out_, n, num_digits).end; + } + void write_year(long long year) { + if (year >= 0 && year < 10000) { + write2(static_cast(year / 100)); + write2(static_cast(year % 100)); + } else { + write_year_extended(year); + } + } + + void write_utc_offset(long offset, numeric_system ns) { + if (offset < 0) { + *out_++ = '-'; + offset = -offset; + } else { + *out_++ = '+'; + } + offset /= 60; + write2(static_cast(offset / 60)); + if (ns != numeric_system::standard) *out_++ = ':'; + write2(static_cast(offset % 60)); + } + template ::value)> + void format_utc_offset_impl(const T& tm, numeric_system ns) { + write_utc_offset(tm.tm_gmtoff, ns); + } + template ::value)> + void format_utc_offset_impl(const T& tm, numeric_system ns) { +#if defined(_WIN32) && defined(_UCRT) +# if FMT_USE_TZSET + tzset_once(); +# endif + long offset = 0; + _get_timezone(&offset); + if (tm.tm_isdst) { + long dstbias = 0; + _get_dstbias(&dstbias); + offset += dstbias; + } + write_utc_offset(-offset, ns); +#else + if (ns == numeric_system::standard) return format_localized('z'); + + // Extract timezone offset from timezone conversion functions. + std::tm gtm = tm; + std::time_t gt = std::mktime(>m); + std::tm ltm = gmtime(gt); + std::time_t lt = std::mktime(<m); + long offset = gt - lt; + write_utc_offset(offset, ns); +#endif + } + + template ::value)> + void format_tz_name_impl(const T& tm) { + if (is_classic_) + out_ = write_tm_str(out_, tm.tm_zone, loc_); + else + format_localized('Z'); + } + template ::value)> + void format_tz_name_impl(const T&) { + format_localized('Z'); + } + + void format_localized(char format, char modifier = 0) { + out_ = write(out_, tm_, loc_, format, modifier); + } + + public: + tm_writer(const std::locale& loc, OutputIt out, const std::tm& tm, + const Duration* subsecs = nullptr) + : loc_(loc), + is_classic_(loc_ == get_classic_locale()), + out_(out), + subsecs_(subsecs), + tm_(tm) {} + + auto out() const -> OutputIt { return out_; } + + FMT_CONSTEXPR void on_text(const Char* begin, const Char* end) { + out_ = copy(begin, end, out_); + } + + void on_abbr_weekday() { + if (is_classic_) + out_ = write(out_, tm_wday_short_name(tm_wday())); + else + format_localized('a'); + } + void on_full_weekday() { + if (is_classic_) + out_ = write(out_, tm_wday_full_name(tm_wday())); + else + format_localized('A'); + } + void on_dec0_weekday(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) return write1(tm_wday()); + format_localized('w', 'O'); + } + void on_dec1_weekday(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) { + auto wday = tm_wday(); + write1(wday == 0 ? days_per_week : wday); + } else { + format_localized('u', 'O'); + } + } + + void on_abbr_month() { + if (is_classic_) + out_ = write(out_, tm_mon_short_name(tm_mon())); + else + format_localized('b'); + } + void on_full_month() { + if (is_classic_) + out_ = write(out_, tm_mon_full_name(tm_mon())); + else + format_localized('B'); + } + + void on_datetime(numeric_system ns) { + if (is_classic_) { + on_abbr_weekday(); + *out_++ = ' '; + on_abbr_month(); + *out_++ = ' '; + on_day_of_month(numeric_system::standard, pad_type::space); + *out_++ = ' '; + on_iso_time(); + *out_++ = ' '; + on_year(numeric_system::standard); + } else { + format_localized('c', ns == numeric_system::standard ? '\0' : 'E'); + } + } + void on_loc_date(numeric_system ns) { + if (is_classic_) + on_us_date(); + else + format_localized('x', ns == numeric_system::standard ? '\0' : 'E'); + } + void on_loc_time(numeric_system ns) { + if (is_classic_) + on_iso_time(); + else + format_localized('X', ns == numeric_system::standard ? '\0' : 'E'); + } + void on_us_date() { + char buf[8]; + write_digit2_separated(buf, to_unsigned(tm_mon() + 1), + to_unsigned(tm_mday()), + to_unsigned(split_year_lower(tm_year())), '/'); + out_ = copy(std::begin(buf), std::end(buf), out_); + } + void on_iso_date() { + auto year = tm_year(); + char buf[10]; + size_t offset = 0; + if (year >= 0 && year < 10000) { + copy2(buf, digits2(static_cast(year / 100))); + } else { + offset = 4; + write_year_extended(year); + year = 0; + } + write_digit2_separated(buf + 2, static_cast(year % 100), + to_unsigned(tm_mon() + 1), to_unsigned(tm_mday()), + '-'); + out_ = copy(std::begin(buf) + offset, std::end(buf), out_); + } + + void on_utc_offset(numeric_system ns) { format_utc_offset_impl(tm_, ns); } + void on_tz_name() { format_tz_name_impl(tm_); } + + void on_year(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) + return write_year(tm_year()); + format_localized('Y', 'E'); + } + void on_short_year(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) + return write2(split_year_lower(tm_year())); + format_localized('y', 'O'); + } + void on_offset_year() { + if (is_classic_) return write2(split_year_lower(tm_year())); + format_localized('y', 'E'); + } + + void on_century(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) { + auto year = tm_year(); + auto upper = year / 100; + if (year >= -99 && year < 0) { + // Zero upper on negative year. + *out_++ = '-'; + *out_++ = '0'; + } else if (upper >= 0 && upper < 100) { + write2(static_cast(upper)); + } else { + out_ = write(out_, upper); + } + } else { + format_localized('C', 'E'); + } + } + + void on_dec_month(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) + return write2(tm_mon() + 1); + format_localized('m', 'O'); + } + + void on_dec0_week_of_year(numeric_system ns, pad_type pad) { + if (is_classic_ || ns == numeric_system::standard) + return write2((tm_yday() + days_per_week - tm_wday()) / days_per_week, + pad); + format_localized('U', 'O'); + } + void on_dec1_week_of_year(numeric_system ns, pad_type pad) { + if (is_classic_ || ns == numeric_system::standard) { + auto wday = tm_wday(); + write2((tm_yday() + days_per_week - + (wday == 0 ? (days_per_week - 1) : (wday - 1))) / + days_per_week, + pad); + } else { + format_localized('W', 'O'); + } + } + void on_iso_week_of_year(numeric_system ns, pad_type pad) { + if (is_classic_ || ns == numeric_system::standard) + return write2(tm_iso_week_of_year(), pad); + format_localized('V', 'O'); + } + + void on_iso_week_based_year() { write_year(tm_iso_week_year()); } + void on_iso_week_based_short_year() { + write2(split_year_lower(tm_iso_week_year())); + } + + void on_day_of_year() { + auto yday = tm_yday() + 1; + write1(yday / 100); + write2(yday % 100); + } + void on_day_of_month(numeric_system ns, pad_type pad) { + if (is_classic_ || ns == numeric_system::standard) + return write2(tm_mday(), pad); + format_localized('d', 'O'); + } + + void on_24_hour(numeric_system ns, pad_type pad) { + if (is_classic_ || ns == numeric_system::standard) + return write2(tm_hour(), pad); + format_localized('H', 'O'); + } + void on_12_hour(numeric_system ns, pad_type pad) { + if (is_classic_ || ns == numeric_system::standard) + return write2(tm_hour12(), pad); + format_localized('I', 'O'); + } + void on_minute(numeric_system ns, pad_type pad) { + if (is_classic_ || ns == numeric_system::standard) + return write2(tm_min(), pad); + format_localized('M', 'O'); + } + + void on_second(numeric_system ns, pad_type pad) { + if (is_classic_ || ns == numeric_system::standard) { + write2(tm_sec(), pad); + if (subsecs_) { + if (std::is_floating_point::value) { + auto buf = memory_buffer(); + write_floating_seconds(buf, *subsecs_); + if (buf.size() > 1) { + // Remove the leading "0", write something like ".123". + out_ = std::copy(buf.begin() + 1, buf.end(), out_); + } + } else { + write_fractional_seconds(out_, *subsecs_); + } + } + } else { + // Currently no formatting of subseconds when a locale is set. + format_localized('S', 'O'); + } + } + + void on_12_hour_time() { + if (is_classic_) { + char buf[8]; + write_digit2_separated(buf, to_unsigned(tm_hour12()), + to_unsigned(tm_min()), to_unsigned(tm_sec()), ':'); + out_ = copy(std::begin(buf), std::end(buf), out_); + *out_++ = ' '; + on_am_pm(); + } else { + format_localized('r'); + } + } + void on_24_hour_time() { + write2(tm_hour()); + *out_++ = ':'; + write2(tm_min()); + } + void on_iso_time() { + on_24_hour_time(); + *out_++ = ':'; + on_second(numeric_system::standard, pad_type::zero); + } + + void on_am_pm() { + if (is_classic_) { + *out_++ = tm_hour() < 12 ? 'A' : 'P'; + *out_++ = 'M'; + } else { + format_localized('p'); + } + } + + // These apply to chrono durations but not tm. + void on_duration_value() {} + void on_duration_unit() {} +}; + +struct chrono_format_checker : null_chrono_spec_handler { + bool has_precision_integral = false; + + FMT_NORETURN void unsupported() { FMT_THROW(format_error("no date")); } + + template + FMT_CONSTEXPR void on_text(const Char*, const Char*) {} + FMT_CONSTEXPR void on_day_of_year() {} + FMT_CONSTEXPR void on_24_hour(numeric_system, pad_type) {} + FMT_CONSTEXPR void on_12_hour(numeric_system, pad_type) {} + FMT_CONSTEXPR void on_minute(numeric_system, pad_type) {} + FMT_CONSTEXPR void on_second(numeric_system, pad_type) {} + FMT_CONSTEXPR void on_12_hour_time() {} + FMT_CONSTEXPR void on_24_hour_time() {} + FMT_CONSTEXPR void on_iso_time() {} + FMT_CONSTEXPR void on_am_pm() {} + FMT_CONSTEXPR void on_duration_value() const { + if (has_precision_integral) { + FMT_THROW(format_error("precision not allowed for this argument type")); + } + } + FMT_CONSTEXPR void on_duration_unit() {} +}; + +template ::value&& has_isfinite::value)> +inline auto isfinite(T) -> bool { + return true; +} + +template ::value)> +inline auto mod(T x, int y) -> T { + return x % static_cast(y); +} +template ::value)> +inline auto mod(T x, int y) -> T { + return std::fmod(x, static_cast(y)); +} + +// If T is an integral type, maps T to its unsigned counterpart, otherwise +// leaves it unchanged (unlike std::make_unsigned). +template ::value> +struct make_unsigned_or_unchanged { + using type = T; +}; + +template struct make_unsigned_or_unchanged { + using type = typename std::make_unsigned::type; +}; + +template ::value)> +inline auto get_milliseconds(std::chrono::duration d) + -> std::chrono::duration { + // this may overflow and/or the result may not fit in the + // target type. +#if FMT_SAFE_DURATION_CAST + using CommonSecondsType = + typename std::common_type::type; + const auto d_as_common = fmt_duration_cast(d); + const auto d_as_whole_seconds = + fmt_duration_cast(d_as_common); + // this conversion should be nonproblematic + const auto diff = d_as_common - d_as_whole_seconds; + const auto ms = + fmt_duration_cast>(diff); + return ms; +#else + auto s = fmt_duration_cast(d); + return fmt_duration_cast(d - s); +#endif +} + +template ::value)> +auto format_duration_value(OutputIt out, Rep val, int) -> OutputIt { + return write(out, val); +} + +template ::value)> +auto format_duration_value(OutputIt out, Rep val, int precision) -> OutputIt { + auto specs = format_specs(); + specs.precision = precision; + specs.type = + precision >= 0 ? presentation_type::fixed : presentation_type::general; + return write(out, val, specs); +} + +template +auto copy_unit(string_view unit, OutputIt out, Char) -> OutputIt { + return std::copy(unit.begin(), unit.end(), out); +} + +template +auto copy_unit(string_view unit, OutputIt out, wchar_t) -> OutputIt { + // This works when wchar_t is UTF-32 because units only contain characters + // that have the same representation in UTF-16 and UTF-32. + utf8_to_utf16 u(unit); + return std::copy(u.c_str(), u.c_str() + u.size(), out); +} + +template +auto format_duration_unit(OutputIt out) -> OutputIt { + if (const char* unit = get_units()) + return copy_unit(string_view(unit), out, Char()); + *out++ = '['; + out = write(out, Period::num); + if (const_check(Period::den != 1)) { + *out++ = '/'; + out = write(out, Period::den); + } + *out++ = ']'; + *out++ = 's'; + return out; +} + +class get_locale { + private: + union { + std::locale locale_; + }; + bool has_locale_ = false; + + public: + get_locale(bool localized, locale_ref loc) : has_locale_(localized) { +#ifndef FMT_STATIC_THOUSANDS_SEPARATOR + if (localized) + ::new (&locale_) std::locale(loc.template get()); +#endif + } + ~get_locale() { + if (has_locale_) locale_.~locale(); + } + operator const std::locale&() const { + return has_locale_ ? locale_ : get_classic_locale(); + } +}; + +template +struct chrono_formatter { + FormatContext& context; + OutputIt out; + int precision; + bool localized = false; + // rep is unsigned to avoid overflow. + using rep = + conditional_t::value && sizeof(Rep) < sizeof(int), + unsigned, typename make_unsigned_or_unchanged::type>; + rep val; + using seconds = std::chrono::duration; + seconds s; + using milliseconds = std::chrono::duration; + bool negative; + + using char_type = typename FormatContext::char_type; + using tm_writer_type = tm_writer; + + chrono_formatter(FormatContext& ctx, OutputIt o, + std::chrono::duration d) + : context(ctx), + out(o), + val(static_cast(d.count())), + negative(false) { + if (d.count() < 0) { + val = 0 - val; + negative = true; + } + + // this may overflow and/or the result may not fit in the + // target type. + // might need checked conversion (rep!=Rep) + s = fmt_duration_cast(std::chrono::duration(val)); + } + + // returns true if nan or inf, writes to out. + auto handle_nan_inf() -> bool { + if (isfinite(val)) { + return false; + } + if (isnan(val)) { + write_nan(); + return true; + } + // must be +-inf + if (val > 0) { + write_pinf(); + } else { + write_ninf(); + } + return true; + } + + auto days() const -> Rep { return static_cast(s.count() / 86400); } + auto hour() const -> Rep { + return static_cast(mod((s.count() / 3600), 24)); + } + + auto hour12() const -> Rep { + Rep hour = static_cast(mod((s.count() / 3600), 12)); + return hour <= 0 ? 12 : hour; + } + + auto minute() const -> Rep { + return static_cast(mod((s.count() / 60), 60)); + } + auto second() const -> Rep { return static_cast(mod(s.count(), 60)); } + + auto time() const -> std::tm { + auto time = std::tm(); + time.tm_hour = to_nonnegative_int(hour(), 24); + time.tm_min = to_nonnegative_int(minute(), 60); + time.tm_sec = to_nonnegative_int(second(), 60); + return time; + } + + void write_sign() { + if (negative) { + *out++ = '-'; + negative = false; + } + } + + void write(Rep value, int width, pad_type pad = pad_type::zero) { + write_sign(); + if (isnan(value)) return write_nan(); + uint32_or_64_or_128_t n = + to_unsigned(to_nonnegative_int(value, max_value())); + int num_digits = detail::count_digits(n); + if (width > num_digits) { + out = detail::write_padding(out, pad, width - num_digits); + } + out = format_decimal(out, n, num_digits).end; + } + + void write_nan() { std::copy_n("nan", 3, out); } + void write_pinf() { std::copy_n("inf", 3, out); } + void write_ninf() { std::copy_n("-inf", 4, out); } + + template + void format_tm(const tm& time, Callback cb, Args... args) { + if (isnan(val)) return write_nan(); + get_locale loc(localized, context.locale()); + auto w = tm_writer_type(loc, out, time); + (w.*cb)(args...); + out = w.out(); + } + + void on_text(const char_type* begin, const char_type* end) { + std::copy(begin, end, out); + } + + // These are not implemented because durations don't have date information. + void on_abbr_weekday() {} + void on_full_weekday() {} + void on_dec0_weekday(numeric_system) {} + void on_dec1_weekday(numeric_system) {} + void on_abbr_month() {} + void on_full_month() {} + void on_datetime(numeric_system) {} + void on_loc_date(numeric_system) {} + void on_loc_time(numeric_system) {} + void on_us_date() {} + void on_iso_date() {} + void on_utc_offset(numeric_system) {} + void on_tz_name() {} + void on_year(numeric_system) {} + void on_short_year(numeric_system) {} + void on_offset_year() {} + void on_century(numeric_system) {} + void on_iso_week_based_year() {} + void on_iso_week_based_short_year() {} + void on_dec_month(numeric_system) {} + void on_dec0_week_of_year(numeric_system, pad_type) {} + void on_dec1_week_of_year(numeric_system, pad_type) {} + void on_iso_week_of_year(numeric_system, pad_type) {} + void on_day_of_month(numeric_system, pad_type) {} + + void on_day_of_year() { + if (handle_nan_inf()) return; + write(days(), 0); + } + + void on_24_hour(numeric_system ns, pad_type pad) { + if (handle_nan_inf()) return; + + if (ns == numeric_system::standard) return write(hour(), 2, pad); + auto time = tm(); + time.tm_hour = to_nonnegative_int(hour(), 24); + format_tm(time, &tm_writer_type::on_24_hour, ns, pad); + } + + void on_12_hour(numeric_system ns, pad_type pad) { + if (handle_nan_inf()) return; + + if (ns == numeric_system::standard) return write(hour12(), 2, pad); + auto time = tm(); + time.tm_hour = to_nonnegative_int(hour12(), 12); + format_tm(time, &tm_writer_type::on_12_hour, ns, pad); + } + + void on_minute(numeric_system ns, pad_type pad) { + if (handle_nan_inf()) return; + + if (ns == numeric_system::standard) return write(minute(), 2, pad); + auto time = tm(); + time.tm_min = to_nonnegative_int(minute(), 60); + format_tm(time, &tm_writer_type::on_minute, ns, pad); + } + + void on_second(numeric_system ns, pad_type pad) { + if (handle_nan_inf()) return; + + if (ns == numeric_system::standard) { + if (std::is_floating_point::value) { + auto buf = memory_buffer(); + write_floating_seconds(buf, std::chrono::duration(val), + precision); + if (negative) *out++ = '-'; + if (buf.size() < 2 || buf[1] == '.') { + out = detail::write_padding(out, pad); + } + out = std::copy(buf.begin(), buf.end(), out); + } else { + write(second(), 2, pad); + write_fractional_seconds( + out, std::chrono::duration(val), precision); + } + return; + } + auto time = tm(); + time.tm_sec = to_nonnegative_int(second(), 60); + format_tm(time, &tm_writer_type::on_second, ns, pad); + } + + void on_12_hour_time() { + if (handle_nan_inf()) return; + format_tm(time(), &tm_writer_type::on_12_hour_time); + } + + void on_24_hour_time() { + if (handle_nan_inf()) { + *out++ = ':'; + handle_nan_inf(); + return; + } + + write(hour(), 2); + *out++ = ':'; + write(minute(), 2); + } + + void on_iso_time() { + on_24_hour_time(); + *out++ = ':'; + if (handle_nan_inf()) return; + on_second(numeric_system::standard, pad_type::zero); + } + + void on_am_pm() { + if (handle_nan_inf()) return; + format_tm(time(), &tm_writer_type::on_am_pm); + } + + void on_duration_value() { + if (handle_nan_inf()) return; + write_sign(); + out = format_duration_value(out, val, precision); + } + + void on_duration_unit() { + out = format_duration_unit(out); + } +}; + +} // namespace detail + +#if defined(__cpp_lib_chrono) && __cpp_lib_chrono >= 201907 +using weekday = std::chrono::weekday; +using day = std::chrono::day; +using month = std::chrono::month; +using year = std::chrono::year; +using year_month_day = std::chrono::year_month_day; +#else +// A fallback version of weekday. +class weekday { + private: + unsigned char value_; + + public: + weekday() = default; + constexpr explicit weekday(unsigned wd) noexcept + : value_(static_cast(wd != 7 ? wd : 0)) {} + constexpr auto c_encoding() const noexcept -> unsigned { return value_; } +}; + +class day { + private: + unsigned char value_; + + public: + day() = default; + constexpr explicit day(unsigned d) noexcept + : value_(static_cast(d)) {} + constexpr explicit operator unsigned() const noexcept { return value_; } +}; + +class month { + private: + unsigned char value_; + + public: + month() = default; + constexpr explicit month(unsigned m) noexcept + : value_(static_cast(m)) {} + constexpr explicit operator unsigned() const noexcept { return value_; } +}; + +class year { + private: + int value_; + + public: + year() = default; + constexpr explicit year(int y) noexcept : value_(y) {} + constexpr explicit operator int() const noexcept { return value_; } +}; + +class year_month_day { + private: + fmt::year year_; + fmt::month month_; + fmt::day day_; + + public: + year_month_day() = default; + constexpr year_month_day(const year& y, const month& m, const day& d) noexcept + : year_(y), month_(m), day_(d) {} + constexpr auto year() const noexcept -> fmt::year { return year_; } + constexpr auto month() const noexcept -> fmt::month { return month_; } + constexpr auto day() const noexcept -> fmt::day { return day_; } +}; +#endif + +template +struct formatter : private formatter { + private: + bool localized_ = false; + bool use_tm_formatter_ = false; + + public: + FMT_CONSTEXPR auto parse(basic_format_parse_context& ctx) + -> decltype(ctx.begin()) { + auto it = ctx.begin(), end = ctx.end(); + if (it != end && *it == 'L') { + ++it; + localized_ = true; + return it; + } + use_tm_formatter_ = it != end && *it != '}'; + return use_tm_formatter_ ? formatter::parse(ctx) : it; + } + + template + auto format(weekday wd, FormatContext& ctx) const -> decltype(ctx.out()) { + auto time = std::tm(); + time.tm_wday = static_cast(wd.c_encoding()); + if (use_tm_formatter_) return formatter::format(time, ctx); + detail::get_locale loc(localized_, ctx.locale()); + auto w = detail::tm_writer(loc, ctx.out(), time); + w.on_abbr_weekday(); + return w.out(); + } +}; + +template +struct formatter : private formatter { + private: + bool use_tm_formatter_ = false; + + public: + FMT_CONSTEXPR auto parse(basic_format_parse_context& ctx) + -> decltype(ctx.begin()) { + auto it = ctx.begin(), end = ctx.end(); + use_tm_formatter_ = it != end && *it != '}'; + return use_tm_formatter_ ? formatter::parse(ctx) : it; + } + + template + auto format(day d, FormatContext& ctx) const -> decltype(ctx.out()) { + auto time = std::tm(); + time.tm_mday = static_cast(static_cast(d)); + if (use_tm_formatter_) return formatter::format(time, ctx); + detail::get_locale loc(false, ctx.locale()); + auto w = detail::tm_writer(loc, ctx.out(), time); + w.on_day_of_month(detail::numeric_system::standard, detail::pad_type::zero); + return w.out(); + } +}; + +template +struct formatter : private formatter { + private: + bool localized_ = false; + bool use_tm_formatter_ = false; + + public: + FMT_CONSTEXPR auto parse(basic_format_parse_context& ctx) + -> decltype(ctx.begin()) { + auto it = ctx.begin(), end = ctx.end(); + if (it != end && *it == 'L') { + ++it; + localized_ = true; + return it; + } + use_tm_formatter_ = it != end && *it != '}'; + return use_tm_formatter_ ? formatter::parse(ctx) : it; + } + + template + auto format(month m, FormatContext& ctx) const -> decltype(ctx.out()) { + auto time = std::tm(); + time.tm_mon = static_cast(static_cast(m)) - 1; + if (use_tm_formatter_) return formatter::format(time, ctx); + detail::get_locale loc(localized_, ctx.locale()); + auto w = detail::tm_writer(loc, ctx.out(), time); + w.on_abbr_month(); + return w.out(); + } +}; + +template +struct formatter : private formatter { + private: + bool use_tm_formatter_ = false; + + public: + FMT_CONSTEXPR auto parse(basic_format_parse_context& ctx) + -> decltype(ctx.begin()) { + auto it = ctx.begin(), end = ctx.end(); + use_tm_formatter_ = it != end && *it != '}'; + return use_tm_formatter_ ? formatter::parse(ctx) : it; + } + + template + auto format(year y, FormatContext& ctx) const -> decltype(ctx.out()) { + auto time = std::tm(); + time.tm_year = static_cast(y) - 1900; + if (use_tm_formatter_) return formatter::format(time, ctx); + detail::get_locale loc(false, ctx.locale()); + auto w = detail::tm_writer(loc, ctx.out(), time); + w.on_year(detail::numeric_system::standard); + return w.out(); + } +}; + +template +struct formatter : private formatter { + private: + bool use_tm_formatter_ = false; + + public: + FMT_CONSTEXPR auto parse(basic_format_parse_context& ctx) + -> decltype(ctx.begin()) { + auto it = ctx.begin(), end = ctx.end(); + use_tm_formatter_ = it != end && *it != '}'; + return use_tm_formatter_ ? formatter::parse(ctx) : it; + } + + template + auto format(year_month_day val, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto time = std::tm(); + time.tm_year = static_cast(val.year()) - 1900; + time.tm_mon = static_cast(static_cast(val.month())) - 1; + time.tm_mday = static_cast(static_cast(val.day())); + if (use_tm_formatter_) return formatter::format(time, ctx); + detail::get_locale loc(true, ctx.locale()); + auto w = detail::tm_writer(loc, ctx.out(), time); + w.on_iso_date(); + return w.out(); + } +}; + +template +struct formatter, Char> { + private: + format_specs specs_; + detail::arg_ref width_ref_; + detail::arg_ref precision_ref_; + bool localized_ = false; + basic_string_view format_str_; + + public: + FMT_CONSTEXPR auto parse(basic_format_parse_context& ctx) + -> decltype(ctx.begin()) { + auto it = ctx.begin(), end = ctx.end(); + if (it == end || *it == '}') return it; + + it = detail::parse_align(it, end, specs_); + if (it == end) return it; + + it = detail::parse_dynamic_spec(it, end, specs_.width, width_ref_, ctx); + if (it == end) return it; + + auto checker = detail::chrono_format_checker(); + if (*it == '.') { + checker.has_precision_integral = !std::is_floating_point::value; + it = detail::parse_precision(it, end, specs_.precision, precision_ref_, + ctx); + } + if (it != end && *it == 'L') { + localized_ = true; + ++it; + } + end = detail::parse_chrono_format(it, end, checker); + format_str_ = {it, detail::to_unsigned(end - it)}; + return end; + } + + template + auto format(std::chrono::duration d, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto specs = specs_; + auto precision = specs.precision; + specs.precision = -1; + auto begin = format_str_.begin(), end = format_str_.end(); + // As a possible future optimization, we could avoid extra copying if width + // is not specified. + auto buf = basic_memory_buffer(); + auto out = std::back_inserter(buf); + detail::handle_dynamic_spec(specs.width, width_ref_, + ctx); + detail::handle_dynamic_spec(precision, + precision_ref_, ctx); + if (begin == end || *begin == '}') { + out = detail::format_duration_value(out, d.count(), precision); + detail::format_duration_unit(out); + } else { + using chrono_formatter = + detail::chrono_formatter; + auto f = chrono_formatter(ctx, out, d); + f.precision = precision; + f.localized = localized_; + detail::parse_chrono_format(begin, end, f); + } + return detail::write( + ctx.out(), basic_string_view(buf.data(), buf.size()), specs); + } +}; + +template +struct formatter, + Char> : formatter { + FMT_CONSTEXPR formatter() { + this->format_str_ = detail::string_literal{}; + } + + template + auto format(std::chrono::time_point val, + FormatContext& ctx) const -> decltype(ctx.out()) { + std::tm tm = gmtime(val); + using period = typename Duration::period; + if (detail::const_check( + period::num == 1 && period::den == 1 && + !std::is_floating_point::value)) { + return formatter::format(tm, ctx); + } + Duration epoch = val.time_since_epoch(); + Duration subsecs = detail::fmt_duration_cast( + epoch - detail::fmt_duration_cast(epoch)); + if (subsecs.count() < 0) { + auto second = + detail::fmt_duration_cast(std::chrono::seconds(1)); + if (tm.tm_sec != 0) + --tm.tm_sec; + else + tm = gmtime(val - second); + subsecs += detail::fmt_duration_cast(std::chrono::seconds(1)); + } + return formatter::do_format(tm, ctx, &subsecs); + } +}; + +#if FMT_USE_LOCAL_TIME +template +struct formatter, Char> + : formatter { + FMT_CONSTEXPR formatter() { + this->format_str_ = detail::string_literal{}; + } + + template + auto format(std::chrono::local_time val, FormatContext& ctx) const + -> decltype(ctx.out()) { + using period = typename Duration::period; + if (period::num != 1 || period::den != 1 || + std::is_floating_point::value) { + const auto epoch = val.time_since_epoch(); + const auto subsecs = detail::fmt_duration_cast( + epoch - detail::fmt_duration_cast(epoch)); + + return formatter::do_format(localtime(val), ctx, &subsecs); + } + + return formatter::format(localtime(val), ctx); + } +}; +#endif + +#if FMT_USE_UTC_TIME +template +struct formatter, + Char> + : formatter, + Char> { + template + auto format(std::chrono::time_point val, + FormatContext& ctx) const -> decltype(ctx.out()) { + return formatter< + std::chrono::time_point, + Char>::format(std::chrono::utc_clock::to_sys(val), ctx); + } +}; +#endif + +template struct formatter { + private: + format_specs specs_; + detail::arg_ref width_ref_; + + protected: + basic_string_view format_str_; + + template + auto do_format(const std::tm& tm, FormatContext& ctx, + const Duration* subsecs) const -> decltype(ctx.out()) { + auto specs = specs_; + auto buf = basic_memory_buffer(); + auto out = std::back_inserter(buf); + detail::handle_dynamic_spec(specs.width, width_ref_, + ctx); + + auto loc_ref = ctx.locale(); + detail::get_locale loc(static_cast(loc_ref), loc_ref); + auto w = + detail::tm_writer(loc, out, tm, subsecs); + detail::parse_chrono_format(format_str_.begin(), format_str_.end(), w); + return detail::write( + ctx.out(), basic_string_view(buf.data(), buf.size()), specs); + } + + public: + FMT_CONSTEXPR auto parse(basic_format_parse_context& ctx) + -> decltype(ctx.begin()) { + auto it = ctx.begin(), end = ctx.end(); + if (it == end || *it == '}') return it; + + it = detail::parse_align(it, end, specs_); + if (it == end) return it; + + it = detail::parse_dynamic_spec(it, end, specs_.width, width_ref_, ctx); + if (it == end) return it; + + end = detail::parse_chrono_format(it, end, detail::tm_format_checker()); + // Replace the default format_str only if the new spec is not empty. + if (end != it) format_str_ = {it, detail::to_unsigned(end - it)}; + return end; + } + + template + auto format(const std::tm& tm, FormatContext& ctx) const + -> decltype(ctx.out()) { + return do_format(tm, ctx, nullptr); + } +}; + +FMT_END_EXPORT +FMT_END_NAMESPACE + +#endif // FMT_CHRONO_H_ diff --git a/Submodules/fmt/include/fmt/color.h b/Submodules/fmt/include/fmt/color.h new file mode 100644 index 0000000..f0e9dd9 --- /dev/null +++ b/Submodules/fmt/include/fmt/color.h @@ -0,0 +1,612 @@ +// Formatting library for C++ - color support +// +// Copyright (c) 2018 - present, Victor Zverovich and fmt contributors +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_COLOR_H_ +#define FMT_COLOR_H_ + +#include "format.h" + +FMT_BEGIN_NAMESPACE +FMT_BEGIN_EXPORT + +enum class color : uint32_t { + alice_blue = 0xF0F8FF, // rgb(240,248,255) + antique_white = 0xFAEBD7, // rgb(250,235,215) + aqua = 0x00FFFF, // rgb(0,255,255) + aquamarine = 0x7FFFD4, // rgb(127,255,212) + azure = 0xF0FFFF, // rgb(240,255,255) + beige = 0xF5F5DC, // rgb(245,245,220) + bisque = 0xFFE4C4, // rgb(255,228,196) + black = 0x000000, // rgb(0,0,0) + blanched_almond = 0xFFEBCD, // rgb(255,235,205) + blue = 0x0000FF, // rgb(0,0,255) + blue_violet = 0x8A2BE2, // rgb(138,43,226) + brown = 0xA52A2A, // rgb(165,42,42) + burly_wood = 0xDEB887, // rgb(222,184,135) + cadet_blue = 0x5F9EA0, // rgb(95,158,160) + chartreuse = 0x7FFF00, // rgb(127,255,0) + chocolate = 0xD2691E, // rgb(210,105,30) + coral = 0xFF7F50, // rgb(255,127,80) + cornflower_blue = 0x6495ED, // rgb(100,149,237) + cornsilk = 0xFFF8DC, // rgb(255,248,220) + crimson = 0xDC143C, // rgb(220,20,60) + cyan = 0x00FFFF, // rgb(0,255,255) + dark_blue = 0x00008B, // rgb(0,0,139) + dark_cyan = 0x008B8B, // rgb(0,139,139) + dark_golden_rod = 0xB8860B, // rgb(184,134,11) + dark_gray = 0xA9A9A9, // rgb(169,169,169) + dark_green = 0x006400, // rgb(0,100,0) + dark_khaki = 0xBDB76B, // rgb(189,183,107) + dark_magenta = 0x8B008B, // rgb(139,0,139) + dark_olive_green = 0x556B2F, // rgb(85,107,47) + dark_orange = 0xFF8C00, // rgb(255,140,0) + dark_orchid = 0x9932CC, // rgb(153,50,204) + dark_red = 0x8B0000, // rgb(139,0,0) + dark_salmon = 0xE9967A, // rgb(233,150,122) + dark_sea_green = 0x8FBC8F, // rgb(143,188,143) + dark_slate_blue = 0x483D8B, // rgb(72,61,139) + dark_slate_gray = 0x2F4F4F, // rgb(47,79,79) + dark_turquoise = 0x00CED1, // rgb(0,206,209) + dark_violet = 0x9400D3, // rgb(148,0,211) + deep_pink = 0xFF1493, // rgb(255,20,147) + deep_sky_blue = 0x00BFFF, // rgb(0,191,255) + dim_gray = 0x696969, // rgb(105,105,105) + dodger_blue = 0x1E90FF, // rgb(30,144,255) + fire_brick = 0xB22222, // rgb(178,34,34) + floral_white = 0xFFFAF0, // rgb(255,250,240) + forest_green = 0x228B22, // rgb(34,139,34) + fuchsia = 0xFF00FF, // rgb(255,0,255) + gainsboro = 0xDCDCDC, // rgb(220,220,220) + ghost_white = 0xF8F8FF, // rgb(248,248,255) + gold = 0xFFD700, // rgb(255,215,0) + golden_rod = 0xDAA520, // rgb(218,165,32) + gray = 0x808080, // rgb(128,128,128) + green = 0x008000, // rgb(0,128,0) + green_yellow = 0xADFF2F, // rgb(173,255,47) + honey_dew = 0xF0FFF0, // rgb(240,255,240) + hot_pink = 0xFF69B4, // rgb(255,105,180) + indian_red = 0xCD5C5C, // rgb(205,92,92) + indigo = 0x4B0082, // rgb(75,0,130) + ivory = 0xFFFFF0, // rgb(255,255,240) + khaki = 0xF0E68C, // rgb(240,230,140) + lavender = 0xE6E6FA, // rgb(230,230,250) + lavender_blush = 0xFFF0F5, // rgb(255,240,245) + lawn_green = 0x7CFC00, // rgb(124,252,0) + lemon_chiffon = 0xFFFACD, // rgb(255,250,205) + light_blue = 0xADD8E6, // rgb(173,216,230) + light_coral = 0xF08080, // rgb(240,128,128) + light_cyan = 0xE0FFFF, // rgb(224,255,255) + light_golden_rod_yellow = 0xFAFAD2, // rgb(250,250,210) + light_gray = 0xD3D3D3, // rgb(211,211,211) + light_green = 0x90EE90, // rgb(144,238,144) + light_pink = 0xFFB6C1, // rgb(255,182,193) + light_salmon = 0xFFA07A, // rgb(255,160,122) + light_sea_green = 0x20B2AA, // rgb(32,178,170) + light_sky_blue = 0x87CEFA, // rgb(135,206,250) + light_slate_gray = 0x778899, // rgb(119,136,153) + light_steel_blue = 0xB0C4DE, // rgb(176,196,222) + light_yellow = 0xFFFFE0, // rgb(255,255,224) + lime = 0x00FF00, // rgb(0,255,0) + lime_green = 0x32CD32, // rgb(50,205,50) + linen = 0xFAF0E6, // rgb(250,240,230) + magenta = 0xFF00FF, // rgb(255,0,255) + maroon = 0x800000, // rgb(128,0,0) + medium_aquamarine = 0x66CDAA, // rgb(102,205,170) + medium_blue = 0x0000CD, // rgb(0,0,205) + medium_orchid = 0xBA55D3, // rgb(186,85,211) + medium_purple = 0x9370DB, // rgb(147,112,219) + medium_sea_green = 0x3CB371, // rgb(60,179,113) + medium_slate_blue = 0x7B68EE, // rgb(123,104,238) + medium_spring_green = 0x00FA9A, // rgb(0,250,154) + medium_turquoise = 0x48D1CC, // rgb(72,209,204) + medium_violet_red = 0xC71585, // rgb(199,21,133) + midnight_blue = 0x191970, // rgb(25,25,112) + mint_cream = 0xF5FFFA, // rgb(245,255,250) + misty_rose = 0xFFE4E1, // rgb(255,228,225) + moccasin = 0xFFE4B5, // rgb(255,228,181) + navajo_white = 0xFFDEAD, // rgb(255,222,173) + navy = 0x000080, // rgb(0,0,128) + old_lace = 0xFDF5E6, // rgb(253,245,230) + olive = 0x808000, // rgb(128,128,0) + olive_drab = 0x6B8E23, // rgb(107,142,35) + orange = 0xFFA500, // rgb(255,165,0) + orange_red = 0xFF4500, // rgb(255,69,0) + orchid = 0xDA70D6, // rgb(218,112,214) + pale_golden_rod = 0xEEE8AA, // rgb(238,232,170) + pale_green = 0x98FB98, // rgb(152,251,152) + pale_turquoise = 0xAFEEEE, // rgb(175,238,238) + pale_violet_red = 0xDB7093, // rgb(219,112,147) + papaya_whip = 0xFFEFD5, // rgb(255,239,213) + peach_puff = 0xFFDAB9, // rgb(255,218,185) + peru = 0xCD853F, // rgb(205,133,63) + pink = 0xFFC0CB, // rgb(255,192,203) + plum = 0xDDA0DD, // rgb(221,160,221) + powder_blue = 0xB0E0E6, // rgb(176,224,230) + purple = 0x800080, // rgb(128,0,128) + rebecca_purple = 0x663399, // rgb(102,51,153) + red = 0xFF0000, // rgb(255,0,0) + rosy_brown = 0xBC8F8F, // rgb(188,143,143) + royal_blue = 0x4169E1, // rgb(65,105,225) + saddle_brown = 0x8B4513, // rgb(139,69,19) + salmon = 0xFA8072, // rgb(250,128,114) + sandy_brown = 0xF4A460, // rgb(244,164,96) + sea_green = 0x2E8B57, // rgb(46,139,87) + sea_shell = 0xFFF5EE, // rgb(255,245,238) + sienna = 0xA0522D, // rgb(160,82,45) + silver = 0xC0C0C0, // rgb(192,192,192) + sky_blue = 0x87CEEB, // rgb(135,206,235) + slate_blue = 0x6A5ACD, // rgb(106,90,205) + slate_gray = 0x708090, // rgb(112,128,144) + snow = 0xFFFAFA, // rgb(255,250,250) + spring_green = 0x00FF7F, // rgb(0,255,127) + steel_blue = 0x4682B4, // rgb(70,130,180) + tan = 0xD2B48C, // rgb(210,180,140) + teal = 0x008080, // rgb(0,128,128) + thistle = 0xD8BFD8, // rgb(216,191,216) + tomato = 0xFF6347, // rgb(255,99,71) + turquoise = 0x40E0D0, // rgb(64,224,208) + violet = 0xEE82EE, // rgb(238,130,238) + wheat = 0xF5DEB3, // rgb(245,222,179) + white = 0xFFFFFF, // rgb(255,255,255) + white_smoke = 0xF5F5F5, // rgb(245,245,245) + yellow = 0xFFFF00, // rgb(255,255,0) + yellow_green = 0x9ACD32 // rgb(154,205,50) +}; // enum class color + +enum class terminal_color : uint8_t { + black = 30, + red, + green, + yellow, + blue, + magenta, + cyan, + white, + bright_black = 90, + bright_red, + bright_green, + bright_yellow, + bright_blue, + bright_magenta, + bright_cyan, + bright_white +}; + +enum class emphasis : uint8_t { + bold = 1, + faint = 1 << 1, + italic = 1 << 2, + underline = 1 << 3, + blink = 1 << 4, + reverse = 1 << 5, + conceal = 1 << 6, + strikethrough = 1 << 7, +}; + +// rgb is a struct for red, green and blue colors. +// Using the name "rgb" makes some editors show the color in a tooltip. +struct rgb { + FMT_CONSTEXPR rgb() : r(0), g(0), b(0) {} + FMT_CONSTEXPR rgb(uint8_t r_, uint8_t g_, uint8_t b_) : r(r_), g(g_), b(b_) {} + FMT_CONSTEXPR rgb(uint32_t hex) + : r((hex >> 16) & 0xFF), g((hex >> 8) & 0xFF), b(hex & 0xFF) {} + FMT_CONSTEXPR rgb(color hex) + : r((uint32_t(hex) >> 16) & 0xFF), + g((uint32_t(hex) >> 8) & 0xFF), + b(uint32_t(hex) & 0xFF) {} + uint8_t r; + uint8_t g; + uint8_t b; +}; + +namespace detail { + +// color is a struct of either a rgb color or a terminal color. +struct color_type { + FMT_CONSTEXPR color_type() noexcept : is_rgb(), value{} {} + FMT_CONSTEXPR color_type(color rgb_color) noexcept : is_rgb(true), value{} { + value.rgb_color = static_cast(rgb_color); + } + FMT_CONSTEXPR color_type(rgb rgb_color) noexcept : is_rgb(true), value{} { + value.rgb_color = (static_cast(rgb_color.r) << 16) | + (static_cast(rgb_color.g) << 8) | rgb_color.b; + } + FMT_CONSTEXPR color_type(terminal_color term_color) noexcept + : is_rgb(), value{} { + value.term_color = static_cast(term_color); + } + bool is_rgb; + union color_union { + uint8_t term_color; + uint32_t rgb_color; + } value; +}; +} // namespace detail + +/// A text style consisting of foreground and background colors and emphasis. +class text_style { + public: + FMT_CONSTEXPR text_style(emphasis em = emphasis()) noexcept + : set_foreground_color(), set_background_color(), ems(em) {} + + FMT_CONSTEXPR auto operator|=(const text_style& rhs) -> text_style& { + if (!set_foreground_color) { + set_foreground_color = rhs.set_foreground_color; + foreground_color = rhs.foreground_color; + } else if (rhs.set_foreground_color) { + if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb) + report_error("can't OR a terminal color"); + foreground_color.value.rgb_color |= rhs.foreground_color.value.rgb_color; + } + + if (!set_background_color) { + set_background_color = rhs.set_background_color; + background_color = rhs.background_color; + } else if (rhs.set_background_color) { + if (!background_color.is_rgb || !rhs.background_color.is_rgb) + report_error("can't OR a terminal color"); + background_color.value.rgb_color |= rhs.background_color.value.rgb_color; + } + + ems = static_cast(static_cast(ems) | + static_cast(rhs.ems)); + return *this; + } + + friend FMT_CONSTEXPR auto operator|(text_style lhs, const text_style& rhs) + -> text_style { + return lhs |= rhs; + } + + FMT_CONSTEXPR auto has_foreground() const noexcept -> bool { + return set_foreground_color; + } + FMT_CONSTEXPR auto has_background() const noexcept -> bool { + return set_background_color; + } + FMT_CONSTEXPR auto has_emphasis() const noexcept -> bool { + return static_cast(ems) != 0; + } + FMT_CONSTEXPR auto get_foreground() const noexcept -> detail::color_type { + FMT_ASSERT(has_foreground(), "no foreground specified for this style"); + return foreground_color; + } + FMT_CONSTEXPR auto get_background() const noexcept -> detail::color_type { + FMT_ASSERT(has_background(), "no background specified for this style"); + return background_color; + } + FMT_CONSTEXPR auto get_emphasis() const noexcept -> emphasis { + FMT_ASSERT(has_emphasis(), "no emphasis specified for this style"); + return ems; + } + + private: + FMT_CONSTEXPR text_style(bool is_foreground, + detail::color_type text_color) noexcept + : set_foreground_color(), set_background_color(), ems() { + if (is_foreground) { + foreground_color = text_color; + set_foreground_color = true; + } else { + background_color = text_color; + set_background_color = true; + } + } + + friend FMT_CONSTEXPR auto fg(detail::color_type foreground) noexcept + -> text_style; + + friend FMT_CONSTEXPR auto bg(detail::color_type background) noexcept + -> text_style; + + detail::color_type foreground_color; + detail::color_type background_color; + bool set_foreground_color; + bool set_background_color; + emphasis ems; +}; + +/// Creates a text style from the foreground (text) color. +FMT_CONSTEXPR inline auto fg(detail::color_type foreground) noexcept + -> text_style { + return text_style(true, foreground); +} + +/// Creates a text style from the background color. +FMT_CONSTEXPR inline auto bg(detail::color_type background) noexcept + -> text_style { + return text_style(false, background); +} + +FMT_CONSTEXPR inline auto operator|(emphasis lhs, emphasis rhs) noexcept + -> text_style { + return text_style(lhs) | rhs; +} + +namespace detail { + +template struct ansi_color_escape { + FMT_CONSTEXPR ansi_color_escape(detail::color_type text_color, + const char* esc) noexcept { + // If we have a terminal color, we need to output another escape code + // sequence. + if (!text_color.is_rgb) { + bool is_background = esc == string_view("\x1b[48;2;"); + uint32_t value = text_color.value.term_color; + // Background ASCII codes are the same as the foreground ones but with + // 10 more. + if (is_background) value += 10u; + + size_t index = 0; + buffer[index++] = static_cast('\x1b'); + buffer[index++] = static_cast('['); + + if (value >= 100u) { + buffer[index++] = static_cast('1'); + value %= 100u; + } + buffer[index++] = static_cast('0' + value / 10u); + buffer[index++] = static_cast('0' + value % 10u); + + buffer[index++] = static_cast('m'); + buffer[index++] = static_cast('\0'); + return; + } + + for (int i = 0; i < 7; i++) { + buffer[i] = static_cast(esc[i]); + } + rgb color(text_color.value.rgb_color); + to_esc(color.r, buffer + 7, ';'); + to_esc(color.g, buffer + 11, ';'); + to_esc(color.b, buffer + 15, 'm'); + buffer[19] = static_cast(0); + } + FMT_CONSTEXPR ansi_color_escape(emphasis em) noexcept { + uint8_t em_codes[num_emphases] = {}; + if (has_emphasis(em, emphasis::bold)) em_codes[0] = 1; + if (has_emphasis(em, emphasis::faint)) em_codes[1] = 2; + if (has_emphasis(em, emphasis::italic)) em_codes[2] = 3; + if (has_emphasis(em, emphasis::underline)) em_codes[3] = 4; + if (has_emphasis(em, emphasis::blink)) em_codes[4] = 5; + if (has_emphasis(em, emphasis::reverse)) em_codes[5] = 7; + if (has_emphasis(em, emphasis::conceal)) em_codes[6] = 8; + if (has_emphasis(em, emphasis::strikethrough)) em_codes[7] = 9; + + size_t index = 0; + for (size_t i = 0; i < num_emphases; ++i) { + if (!em_codes[i]) continue; + buffer[index++] = static_cast('\x1b'); + buffer[index++] = static_cast('['); + buffer[index++] = static_cast('0' + em_codes[i]); + buffer[index++] = static_cast('m'); + } + buffer[index++] = static_cast(0); + } + FMT_CONSTEXPR operator const Char*() const noexcept { return buffer; } + + FMT_CONSTEXPR auto begin() const noexcept -> const Char* { return buffer; } + FMT_CONSTEXPR20 auto end() const noexcept -> const Char* { + return buffer + basic_string_view(buffer).size(); + } + + private: + static constexpr size_t num_emphases = 8; + Char buffer[7u + 3u * num_emphases + 1u]; + + static FMT_CONSTEXPR void to_esc(uint8_t c, Char* out, + char delimiter) noexcept { + out[0] = static_cast('0' + c / 100); + out[1] = static_cast('0' + c / 10 % 10); + out[2] = static_cast('0' + c % 10); + out[3] = static_cast(delimiter); + } + static FMT_CONSTEXPR auto has_emphasis(emphasis em, emphasis mask) noexcept + -> bool { + return static_cast(em) & static_cast(mask); + } +}; + +template +FMT_CONSTEXPR auto make_foreground_color(detail::color_type foreground) noexcept + -> ansi_color_escape { + return ansi_color_escape(foreground, "\x1b[38;2;"); +} + +template +FMT_CONSTEXPR auto make_background_color(detail::color_type background) noexcept + -> ansi_color_escape { + return ansi_color_escape(background, "\x1b[48;2;"); +} + +template +FMT_CONSTEXPR auto make_emphasis(emphasis em) noexcept + -> ansi_color_escape { + return ansi_color_escape(em); +} + +template inline void reset_color(buffer& buffer) { + auto reset_color = string_view("\x1b[0m"); + buffer.append(reset_color.begin(), reset_color.end()); +} + +template struct styled_arg : detail::view { + const T& value; + text_style style; + styled_arg(const T& v, text_style s) : value(v), style(s) {} +}; + +template +void vformat_to( + buffer& buf, const text_style& ts, basic_string_view format_str, + basic_format_args>> args) { + bool has_style = false; + if (ts.has_emphasis()) { + has_style = true; + auto emphasis = detail::make_emphasis(ts.get_emphasis()); + buf.append(emphasis.begin(), emphasis.end()); + } + if (ts.has_foreground()) { + has_style = true; + auto foreground = detail::make_foreground_color(ts.get_foreground()); + buf.append(foreground.begin(), foreground.end()); + } + if (ts.has_background()) { + has_style = true; + auto background = detail::make_background_color(ts.get_background()); + buf.append(background.begin(), background.end()); + } + detail::vformat_to(buf, format_str, args, {}); + if (has_style) detail::reset_color(buf); +} + +} // namespace detail + +inline void vprint(FILE* f, const text_style& ts, string_view fmt, + format_args args) { + auto buf = memory_buffer(); + detail::vformat_to(buf, ts, fmt, args); + print(f, FMT_STRING("{}"), string_view(buf.begin(), buf.size())); +} + +/** + * Formats a string and prints it to the specified file stream using ANSI + * escape sequences to specify text formatting. + * + * **Example**: + * + * fmt::print(fmt::emphasis::bold | fg(fmt::color::red), + * "Elapsed time: {0:.2f} seconds", 1.23); + */ +template +void print(FILE* f, const text_style& ts, format_string fmt, + T&&... args) { + vprint(f, ts, fmt, fmt::make_format_args(args...)); +} + +/** + * Formats a string and prints it to stdout using ANSI escape sequences to + * specify text formatting. + * + * **Example**: + * + * fmt::print(fmt::emphasis::bold | fg(fmt::color::red), + * "Elapsed time: {0:.2f} seconds", 1.23); + */ +template +void print(const text_style& ts, format_string fmt, T&&... args) { + return print(stdout, ts, fmt, std::forward(args)...); +} + +inline auto vformat(const text_style& ts, string_view fmt, format_args args) + -> std::string { + auto buf = memory_buffer(); + detail::vformat_to(buf, ts, fmt, args); + return fmt::to_string(buf); +} + +/** + * Formats arguments and returns the result as a string using ANSI escape + * sequences to specify text formatting. + * + * **Example**: + * + * ``` + * #include + * std::string message = fmt::format(fmt::emphasis::bold | fg(fmt::color::red), + * "The answer is {}", 42); + * ``` + */ +template +inline auto format(const text_style& ts, format_string fmt, T&&... args) + -> std::string { + return fmt::vformat(ts, fmt, fmt::make_format_args(args...)); +} + +/// Formats a string with the given text_style and writes the output to `out`. +template ::value)> +auto vformat_to(OutputIt out, const text_style& ts, string_view fmt, + format_args args) -> OutputIt { + auto&& buf = detail::get_buffer(out); + detail::vformat_to(buf, ts, fmt, args); + return detail::get_iterator(buf, out); +} + +/** + * Formats arguments with the given text style, writes the result to the output + * iterator `out` and returns the iterator past the end of the output range. + * + * **Example**: + * + * std::vector out; + * fmt::format_to(std::back_inserter(out), + * fmt::emphasis::bold | fg(fmt::color::red), "{}", 42); + */ +template ::value)> +inline auto format_to(OutputIt out, const text_style& ts, + format_string fmt, T&&... args) -> OutputIt { + return vformat_to(out, ts, fmt, fmt::make_format_args(args...)); +} + +template +struct formatter, Char> : formatter { + template + auto format(const detail::styled_arg& arg, FormatContext& ctx) const + -> decltype(ctx.out()) { + const auto& ts = arg.style; + const auto& value = arg.value; + auto out = ctx.out(); + + bool has_style = false; + if (ts.has_emphasis()) { + has_style = true; + auto emphasis = detail::make_emphasis(ts.get_emphasis()); + out = std::copy(emphasis.begin(), emphasis.end(), out); + } + if (ts.has_foreground()) { + has_style = true; + auto foreground = + detail::make_foreground_color(ts.get_foreground()); + out = std::copy(foreground.begin(), foreground.end(), out); + } + if (ts.has_background()) { + has_style = true; + auto background = + detail::make_background_color(ts.get_background()); + out = std::copy(background.begin(), background.end(), out); + } + out = formatter::format(value, ctx); + if (has_style) { + auto reset_color = string_view("\x1b[0m"); + out = std::copy(reset_color.begin(), reset_color.end(), out); + } + return out; + } +}; + +/** + * Returns an argument that will be formatted using ANSI escape sequences, + * to be used in a formatting function. + * + * **Example**: + * + * fmt::print("Elapsed time: {0:.2f} seconds", + * fmt::styled(1.23, fmt::fg(fmt::color::green) | + * fmt::bg(fmt::color::blue))); + */ +template +FMT_CONSTEXPR auto styled(const T& value, text_style ts) + -> detail::styled_arg> { + return detail::styled_arg>{value, ts}; +} + +FMT_END_EXPORT +FMT_END_NAMESPACE + +#endif // FMT_COLOR_H_ diff --git a/Submodules/fmt/include/fmt/compile.h b/Submodules/fmt/include/fmt/compile.h new file mode 100644 index 0000000..b2afc2c --- /dev/null +++ b/Submodules/fmt/include/fmt/compile.h @@ -0,0 +1,529 @@ +// Formatting library for C++ - experimental format string compilation +// +// Copyright (c) 2012 - present, Victor Zverovich and fmt contributors +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_COMPILE_H_ +#define FMT_COMPILE_H_ + +#ifndef FMT_MODULE +# include // std::back_inserter +#endif + +#include "format.h" + +FMT_BEGIN_NAMESPACE + +// A compile-time string which is compiled into fast formatting code. +FMT_EXPORT class compiled_string {}; + +namespace detail { + +template +FMT_CONSTEXPR inline auto copy(InputIt begin, InputIt end, counting_iterator it) + -> counting_iterator { + return it + (end - begin); +} + +template +struct is_compiled_string : std::is_base_of {}; + +/** + * Converts a string literal `s` into a format string that will be parsed at + * compile time and converted into efficient formatting code. Requires C++17 + * `constexpr if` compiler support. + * + * **Example**: + * + * // Converts 42 into std::string using the most efficient method and no + * // runtime format string processing. + * std::string s = fmt::format(FMT_COMPILE("{}"), 42); + */ +#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction) +# define FMT_COMPILE(s) FMT_STRING_IMPL(s, fmt::compiled_string, explicit) +#else +# define FMT_COMPILE(s) FMT_STRING(s) +#endif + +#if FMT_USE_NONTYPE_TEMPLATE_ARGS +template Str> +struct udl_compiled_string : compiled_string { + using char_type = Char; + explicit constexpr operator basic_string_view() const { + return {Str.data, N - 1}; + } +}; +#endif + +template +auto first(const T& value, const Tail&...) -> const T& { + return value; +} + +#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction) +template struct type_list {}; + +// Returns a reference to the argument at index N from [first, rest...]. +template +constexpr const auto& get([[maybe_unused]] const T& first, + [[maybe_unused]] const Args&... rest) { + static_assert(N < 1 + sizeof...(Args), "index is out of bounds"); + if constexpr (N == 0) + return first; + else + return detail::get(rest...); +} + +template +constexpr int get_arg_index_by_name(basic_string_view name, + type_list) { + return get_arg_index_by_name(name); +} + +template struct get_type_impl; + +template struct get_type_impl> { + using type = + remove_cvref_t(std::declval()...))>; +}; + +template +using get_type = typename get_type_impl::type; + +template struct is_compiled_format : std::false_type {}; + +template struct text { + basic_string_view data; + using char_type = Char; + + template + constexpr OutputIt format(OutputIt out, const Args&...) const { + return write(out, data); + } +}; + +template +struct is_compiled_format> : std::true_type {}; + +template +constexpr text make_text(basic_string_view s, size_t pos, + size_t size) { + return {{&s[pos], size}}; +} + +template struct code_unit { + Char value; + using char_type = Char; + + template + constexpr OutputIt format(OutputIt out, const Args&...) const { + *out++ = value; + return out; + } +}; + +// This ensures that the argument type is convertible to `const T&`. +template +constexpr const T& get_arg_checked(const Args&... args) { + const auto& arg = detail::get(args...); + if constexpr (detail::is_named_arg>()) { + return arg.value; + } else { + return arg; + } +} + +template +struct is_compiled_format> : std::true_type {}; + +// A replacement field that refers to argument N. +template struct field { + using char_type = Char; + + template + constexpr OutputIt format(OutputIt out, const Args&... args) const { + const T& arg = get_arg_checked(args...); + if constexpr (std::is_convertible>::value) { + auto s = basic_string_view(arg); + return copy(s.begin(), s.end(), out); + } + return write(out, arg); + } +}; + +template +struct is_compiled_format> : std::true_type {}; + +// A replacement field that refers to argument with name. +template struct runtime_named_field { + using char_type = Char; + basic_string_view name; + + template + constexpr static bool try_format_argument( + OutputIt& out, + // [[maybe_unused]] due to unused-but-set-parameter warning in GCC 7,8,9 + [[maybe_unused]] basic_string_view arg_name, const T& arg) { + if constexpr (is_named_arg::type>::value) { + if (arg_name == arg.name) { + out = write(out, arg.value); + return true; + } + } + return false; + } + + template + constexpr OutputIt format(OutputIt out, const Args&... args) const { + bool found = (try_format_argument(out, name, args) || ...); + if (!found) { + FMT_THROW(format_error("argument with specified name is not found")); + } + return out; + } +}; + +template +struct is_compiled_format> : std::true_type {}; + +// A replacement field that refers to argument N and has format specifiers. +template struct spec_field { + using char_type = Char; + formatter fmt; + + template + constexpr FMT_INLINE OutputIt format(OutputIt out, + const Args&... args) const { + const auto& vargs = + fmt::make_format_args>(args...); + basic_format_context ctx(out, vargs); + return fmt.format(get_arg_checked(args...), ctx); + } +}; + +template +struct is_compiled_format> : std::true_type {}; + +template struct concat { + L lhs; + R rhs; + using char_type = typename L::char_type; + + template + constexpr OutputIt format(OutputIt out, const Args&... args) const { + out = lhs.format(out, args...); + return rhs.format(out, args...); + } +}; + +template +struct is_compiled_format> : std::true_type {}; + +template +constexpr concat make_concat(L lhs, R rhs) { + return {lhs, rhs}; +} + +struct unknown_format {}; + +template +constexpr size_t parse_text(basic_string_view str, size_t pos) { + for (size_t size = str.size(); pos != size; ++pos) { + if (str[pos] == '{' || str[pos] == '}') break; + } + return pos; +} + +template +constexpr auto compile_format_string(S fmt); + +template +constexpr auto parse_tail(T head, S fmt) { + if constexpr (POS != basic_string_view(fmt).size()) { + constexpr auto tail = compile_format_string(fmt); + if constexpr (std::is_same, + unknown_format>()) + return tail; + else + return make_concat(head, tail); + } else { + return head; + } +} + +template struct parse_specs_result { + formatter fmt; + size_t end; + int next_arg_id; +}; + +enum { manual_indexing_id = -1 }; + +template +constexpr parse_specs_result parse_specs(basic_string_view str, + size_t pos, int next_arg_id) { + str.remove_prefix(pos); + auto ctx = + compile_parse_context(str, max_value(), nullptr, next_arg_id); + auto f = formatter(); + auto end = f.parse(ctx); + return {f, pos + fmt::detail::to_unsigned(end - str.data()), + next_arg_id == 0 ? manual_indexing_id : ctx.next_arg_id()}; +} + +template struct arg_id_handler { + arg_ref arg_id; + + constexpr int on_auto() { + FMT_ASSERT(false, "handler cannot be used with automatic indexing"); + return 0; + } + constexpr int on_index(int id) { + arg_id = arg_ref(id); + return 0; + } + constexpr int on_name(basic_string_view id) { + arg_id = arg_ref(id); + return 0; + } +}; + +template struct parse_arg_id_result { + arg_ref arg_id; + const Char* arg_id_end; +}; + +template +constexpr auto parse_arg_id(const Char* begin, const Char* end) { + auto handler = arg_id_handler{arg_ref{}}; + auto arg_id_end = parse_arg_id(begin, end, handler); + return parse_arg_id_result{handler.arg_id, arg_id_end}; +} + +template struct field_type { + using type = remove_cvref_t; +}; + +template +struct field_type::value>> { + using type = remove_cvref_t; +}; + +template +constexpr auto parse_replacement_field_then_tail(S fmt) { + using char_type = typename S::char_type; + constexpr auto str = basic_string_view(fmt); + constexpr char_type c = END_POS != str.size() ? str[END_POS] : char_type(); + if constexpr (c == '}') { + return parse_tail( + field::type, ARG_INDEX>(), fmt); + } else if constexpr (c != ':') { + FMT_THROW(format_error("expected ':'")); + } else { + constexpr auto result = parse_specs::type>( + str, END_POS + 1, NEXT_ID == manual_indexing_id ? 0 : NEXT_ID); + if constexpr (result.end >= str.size() || str[result.end] != '}') { + FMT_THROW(format_error("expected '}'")); + return 0; + } else { + return parse_tail( + spec_field::type, ARG_INDEX>{ + result.fmt}, + fmt); + } + } +} + +// Compiles a non-empty format string and returns the compiled representation +// or unknown_format() on unrecognized input. +template +constexpr auto compile_format_string(S fmt) { + using char_type = typename S::char_type; + constexpr auto str = basic_string_view(fmt); + if constexpr (str[POS] == '{') { + if constexpr (POS + 1 == str.size()) + FMT_THROW(format_error("unmatched '{' in format string")); + if constexpr (str[POS + 1] == '{') { + return parse_tail(make_text(str, POS, 1), fmt); + } else if constexpr (str[POS + 1] == '}' || str[POS + 1] == ':') { + static_assert(ID != manual_indexing_id, + "cannot switch from manual to automatic argument indexing"); + constexpr auto next_id = + ID != manual_indexing_id ? ID + 1 : manual_indexing_id; + return parse_replacement_field_then_tail, Args, + POS + 1, ID, next_id>(fmt); + } else { + constexpr auto arg_id_result = + parse_arg_id(str.data() + POS + 1, str.data() + str.size()); + constexpr auto arg_id_end_pos = arg_id_result.arg_id_end - str.data(); + constexpr char_type c = + arg_id_end_pos != str.size() ? str[arg_id_end_pos] : char_type(); + static_assert(c == '}' || c == ':', "missing '}' in format string"); + if constexpr (arg_id_result.arg_id.kind == arg_id_kind::index) { + static_assert( + ID == manual_indexing_id || ID == 0, + "cannot switch from automatic to manual argument indexing"); + constexpr auto arg_index = arg_id_result.arg_id.val.index; + return parse_replacement_field_then_tail, + Args, arg_id_end_pos, + arg_index, manual_indexing_id>( + fmt); + } else if constexpr (arg_id_result.arg_id.kind == arg_id_kind::name) { + constexpr auto arg_index = + get_arg_index_by_name(arg_id_result.arg_id.val.name, Args{}); + if constexpr (arg_index >= 0) { + constexpr auto next_id = + ID != manual_indexing_id ? ID + 1 : manual_indexing_id; + return parse_replacement_field_then_tail< + decltype(get_type::value), Args, arg_id_end_pos, + arg_index, next_id>(fmt); + } else if constexpr (c == '}') { + return parse_tail( + runtime_named_field{arg_id_result.arg_id.val.name}, + fmt); + } else if constexpr (c == ':') { + return unknown_format(); // no type info for specs parsing + } + } + } + } else if constexpr (str[POS] == '}') { + if constexpr (POS + 1 == str.size()) + FMT_THROW(format_error("unmatched '}' in format string")); + return parse_tail(make_text(str, POS, 1), fmt); + } else { + constexpr auto end = parse_text(str, POS + 1); + if constexpr (end - POS > 1) { + return parse_tail(make_text(str, POS, end - POS), fmt); + } else { + return parse_tail(code_unit{str[POS]}, fmt); + } + } +} + +template ::value)> +constexpr auto compile(S fmt) { + constexpr auto str = basic_string_view(fmt); + if constexpr (str.size() == 0) { + return detail::make_text(str, 0, 0); + } else { + constexpr auto result = + detail::compile_format_string, 0, 0>(fmt); + return result; + } +} +#endif // defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction) +} // namespace detail + +FMT_BEGIN_EXPORT + +#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction) + +template ::value)> +FMT_INLINE std::basic_string format(const CompiledFormat& cf, + const Args&... args) { + auto s = std::basic_string(); + cf.format(std::back_inserter(s), args...); + return s; +} + +template ::value)> +constexpr FMT_INLINE OutputIt format_to(OutputIt out, const CompiledFormat& cf, + const Args&... args) { + return cf.format(out, args...); +} + +template ::value)> +FMT_INLINE std::basic_string format(const S&, + Args&&... args) { + if constexpr (std::is_same::value) { + constexpr auto str = basic_string_view(S()); + if constexpr (str.size() == 2 && str[0] == '{' && str[1] == '}') { + const auto& first = detail::first(args...); + if constexpr (detail::is_named_arg< + remove_cvref_t>::value) { + return fmt::to_string(first.value); + } else { + return fmt::to_string(first); + } + } + } + constexpr auto compiled = detail::compile(S()); + if constexpr (std::is_same, + detail::unknown_format>()) { + return fmt::format( + static_cast>(S()), + std::forward(args)...); + } else { + return fmt::format(compiled, std::forward(args)...); + } +} + +template ::value)> +FMT_CONSTEXPR OutputIt format_to(OutputIt out, const S&, Args&&... args) { + constexpr auto compiled = detail::compile(S()); + if constexpr (std::is_same, + detail::unknown_format>()) { + return fmt::format_to( + out, static_cast>(S()), + std::forward(args)...); + } else { + return fmt::format_to(out, compiled, std::forward(args)...); + } +} +#endif + +template ::value)> +auto format_to_n(OutputIt out, size_t n, const S& fmt, Args&&... args) + -> format_to_n_result { + using traits = detail::fixed_buffer_traits; + auto buf = detail::iterator_buffer(out, n); + fmt::format_to(std::back_inserter(buf), fmt, std::forward(args)...); + return {buf.out(), buf.count()}; +} + +template ::value)> +FMT_CONSTEXPR20 auto formatted_size(const S& fmt, const Args&... args) + -> size_t { + return fmt::format_to(detail::counting_iterator(), fmt, args...).count(); +} + +template ::value)> +void print(std::FILE* f, const S& fmt, const Args&... args) { + memory_buffer buffer; + fmt::format_to(std::back_inserter(buffer), fmt, args...); + detail::print(f, {buffer.data(), buffer.size()}); +} + +template ::value)> +void print(const S& fmt, const Args&... args) { + print(stdout, fmt, args...); +} + +#if FMT_USE_NONTYPE_TEMPLATE_ARGS +inline namespace literals { +template constexpr auto operator""_cf() { + using char_t = remove_cvref_t; + return detail::udl_compiled_string(); +} +} // namespace literals +#endif + +FMT_END_EXPORT +FMT_END_NAMESPACE + +#endif // FMT_COMPILE_H_ diff --git a/Submodules/fmt/include/fmt/core.h b/Submodules/fmt/include/fmt/core.h new file mode 100644 index 0000000..8ca735f --- /dev/null +++ b/Submodules/fmt/include/fmt/core.h @@ -0,0 +1,5 @@ +// This file is only provided for compatibility and may be removed in future +// versions. Use fmt/base.h if you don't need fmt::format and fmt/format.h +// otherwise. + +#include "format.h" diff --git a/Submodules/fmt/include/fmt/format-inl.h b/Submodules/fmt/include/fmt/format-inl.h new file mode 100644 index 0000000..a887483 --- /dev/null +++ b/Submodules/fmt/include/fmt/format-inl.h @@ -0,0 +1,1928 @@ +// Formatting library for C++ - implementation +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_FORMAT_INL_H_ +#define FMT_FORMAT_INL_H_ + +#ifndef FMT_MODULE +# include +# include // errno +# include +# include +# include + +# if !defined(FMT_STATIC_THOUSANDS_SEPARATOR) +# include +# endif +#endif + +#if defined(_WIN32) && !defined(FMT_USE_WRITE_CONSOLE) +# include // _isatty +#endif + +#include "format.h" + +FMT_BEGIN_NAMESPACE +namespace detail { + +FMT_FUNC void assert_fail(const char* file, int line, const char* message) { + // Use unchecked std::fprintf to avoid triggering another assertion when + // writing to stderr fails + std::fprintf(stderr, "%s:%d: assertion failed: %s", file, line, message); + // Chosen instead of std::abort to satisfy Clang in CUDA mode during device + // code pass. + std::terminate(); +} + +FMT_FUNC void format_error_code(detail::buffer& out, int error_code, + string_view message) noexcept { + // Report error code making sure that the output fits into + // inline_buffer_size to avoid dynamic memory allocation and potential + // bad_alloc. + out.try_resize(0); + static const char SEP[] = ": "; + static const char ERROR_STR[] = "error "; + // Subtract 2 to account for terminating null characters in SEP and ERROR_STR. + size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2; + auto abs_value = static_cast>(error_code); + if (detail::is_negative(error_code)) { + abs_value = 0 - abs_value; + ++error_code_size; + } + error_code_size += detail::to_unsigned(detail::count_digits(abs_value)); + auto it = appender(out); + if (message.size() <= inline_buffer_size - error_code_size) + fmt::format_to(it, FMT_STRING("{}{}"), message, SEP); + fmt::format_to(it, FMT_STRING("{}{}"), ERROR_STR, error_code); + FMT_ASSERT(out.size() <= inline_buffer_size, ""); +} + +FMT_FUNC void report_error(format_func func, int error_code, + const char* message) noexcept { + memory_buffer full_message; + func(full_message, error_code, message); + // Don't use fwrite_fully because the latter may throw. + if (std::fwrite(full_message.data(), full_message.size(), 1, stderr) > 0) + std::fputc('\n', stderr); +} + +// A wrapper around fwrite that throws on error. +inline void fwrite_fully(const void* ptr, size_t count, FILE* stream) { + size_t written = std::fwrite(ptr, 1, count, stream); + if (written < count) + FMT_THROW(system_error(errno, FMT_STRING("cannot write to file"))); +} + +#ifndef FMT_STATIC_THOUSANDS_SEPARATOR +template +locale_ref::locale_ref(const Locale& loc) : locale_(&loc) { + static_assert(std::is_same::value, ""); +} + +template auto locale_ref::get() const -> Locale { + static_assert(std::is_same::value, ""); + return locale_ ? *static_cast(locale_) : std::locale(); +} + +template +FMT_FUNC auto thousands_sep_impl(locale_ref loc) -> thousands_sep_result { + auto& facet = std::use_facet>(loc.get()); + auto grouping = facet.grouping(); + auto thousands_sep = grouping.empty() ? Char() : facet.thousands_sep(); + return {std::move(grouping), thousands_sep}; +} +template +FMT_FUNC auto decimal_point_impl(locale_ref loc) -> Char { + return std::use_facet>(loc.get()) + .decimal_point(); +} +#else +template +FMT_FUNC auto thousands_sep_impl(locale_ref) -> thousands_sep_result { + return {"\03", FMT_STATIC_THOUSANDS_SEPARATOR}; +} +template FMT_FUNC Char decimal_point_impl(locale_ref) { + return '.'; +} +#endif + +FMT_FUNC auto write_loc(appender out, loc_value value, + const format_specs& specs, locale_ref loc) -> bool { +#ifdef FMT_STATIC_THOUSANDS_SEPARATOR + value.visit(loc_writer<>{ + out, specs, std::string(1, FMT_STATIC_THOUSANDS_SEPARATOR), "\3", "."}); + return true; +#else + auto locale = loc.get(); + // We cannot use the num_put facet because it may produce output in + // a wrong encoding. + using facet = format_facet; + if (std::has_facet(locale)) + return std::use_facet(locale).put(out, value, specs); + return facet(locale).put(out, value, specs); +#endif +} +} // namespace detail + +FMT_FUNC void report_error(const char* message) { + FMT_THROW(format_error(message)); +} + +template typename Locale::id format_facet::id; + +#ifndef FMT_STATIC_THOUSANDS_SEPARATOR +template format_facet::format_facet(Locale& loc) { + auto& numpunct = std::use_facet>(loc); + grouping_ = numpunct.grouping(); + if (!grouping_.empty()) separator_ = std::string(1, numpunct.thousands_sep()); +} + +template <> +FMT_API FMT_FUNC auto format_facet::do_put( + appender out, loc_value val, const format_specs& specs) const -> bool { + return val.visit( + detail::loc_writer<>{out, specs, separator_, grouping_, decimal_point_}); +} +#endif + +FMT_FUNC auto vsystem_error(int error_code, string_view fmt, format_args args) + -> std::system_error { + auto ec = std::error_code(error_code, std::generic_category()); + return std::system_error(ec, vformat(fmt, args)); +} + +namespace detail { + +template +inline auto operator==(basic_fp x, basic_fp y) -> bool { + return x.f == y.f && x.e == y.e; +} + +// Compilers should be able to optimize this into the ror instruction. +FMT_CONSTEXPR inline auto rotr(uint32_t n, uint32_t r) noexcept -> uint32_t { + r &= 31; + return (n >> r) | (n << (32 - r)); +} +FMT_CONSTEXPR inline auto rotr(uint64_t n, uint32_t r) noexcept -> uint64_t { + r &= 63; + return (n >> r) | (n << (64 - r)); +} + +// Implementation of Dragonbox algorithm: https://github.com/jk-jeon/dragonbox. +namespace dragonbox { +// Computes upper 64 bits of multiplication of a 32-bit unsigned integer and a +// 64-bit unsigned integer. +inline auto umul96_upper64(uint32_t x, uint64_t y) noexcept -> uint64_t { + return umul128_upper64(static_cast(x) << 32, y); +} + +// Computes lower 128 bits of multiplication of a 64-bit unsigned integer and a +// 128-bit unsigned integer. +inline auto umul192_lower128(uint64_t x, uint128_fallback y) noexcept + -> uint128_fallback { + uint64_t high = x * y.high(); + uint128_fallback high_low = umul128(x, y.low()); + return {high + high_low.high(), high_low.low()}; +} + +// Computes lower 64 bits of multiplication of a 32-bit unsigned integer and a +// 64-bit unsigned integer. +inline auto umul96_lower64(uint32_t x, uint64_t y) noexcept -> uint64_t { + return x * y; +} + +// Various fast log computations. +inline auto floor_log10_pow2_minus_log10_4_over_3(int e) noexcept -> int { + FMT_ASSERT(e <= 2936 && e >= -2985, "too large exponent"); + return (e * 631305 - 261663) >> 21; +} + +FMT_INLINE_VARIABLE constexpr struct { + uint32_t divisor; + int shift_amount; +} div_small_pow10_infos[] = {{10, 16}, {100, 16}}; + +// Replaces n by floor(n / pow(10, N)) returning true if and only if n is +// divisible by pow(10, N). +// Precondition: n <= pow(10, N + 1). +template +auto check_divisibility_and_divide_by_pow10(uint32_t& n) noexcept -> bool { + // The numbers below are chosen such that: + // 1. floor(n/d) = floor(nm / 2^k) where d=10 or d=100, + // 2. nm mod 2^k < m if and only if n is divisible by d, + // where m is magic_number, k is shift_amount + // and d is divisor. + // + // Item 1 is a common technique of replacing division by a constant with + // multiplication, see e.g. "Division by Invariant Integers Using + // Multiplication" by Granlund and Montgomery (1994). magic_number (m) is set + // to ceil(2^k/d) for large enough k. + // The idea for item 2 originates from Schubfach. + constexpr auto info = div_small_pow10_infos[N - 1]; + FMT_ASSERT(n <= info.divisor * 10, "n is too large"); + constexpr uint32_t magic_number = + (1u << info.shift_amount) / info.divisor + 1; + n *= magic_number; + const uint32_t comparison_mask = (1u << info.shift_amount) - 1; + bool result = (n & comparison_mask) < magic_number; + n >>= info.shift_amount; + return result; +} + +// Computes floor(n / pow(10, N)) for small n and N. +// Precondition: n <= pow(10, N + 1). +template auto small_division_by_pow10(uint32_t n) noexcept -> uint32_t { + constexpr auto info = div_small_pow10_infos[N - 1]; + FMT_ASSERT(n <= info.divisor * 10, "n is too large"); + constexpr uint32_t magic_number = + (1u << info.shift_amount) / info.divisor + 1; + return (n * magic_number) >> info.shift_amount; +} + +// Computes floor(n / 10^(kappa + 1)) (float) +inline auto divide_by_10_to_kappa_plus_1(uint32_t n) noexcept -> uint32_t { + // 1374389535 = ceil(2^37/100) + return static_cast((static_cast(n) * 1374389535) >> 37); +} +// Computes floor(n / 10^(kappa + 1)) (double) +inline auto divide_by_10_to_kappa_plus_1(uint64_t n) noexcept -> uint64_t { + // 2361183241434822607 = ceil(2^(64+7)/1000) + return umul128_upper64(n, 2361183241434822607ull) >> 7; +} + +// Various subroutines using pow10 cache +template struct cache_accessor; + +template <> struct cache_accessor { + using carrier_uint = float_info::carrier_uint; + using cache_entry_type = uint64_t; + + static auto get_cached_power(int k) noexcept -> uint64_t { + FMT_ASSERT(k >= float_info::min_k && k <= float_info::max_k, + "k is out of range"); + static constexpr const uint64_t pow10_significands[] = { + 0x81ceb32c4b43fcf5, 0xa2425ff75e14fc32, 0xcad2f7f5359a3b3f, + 0xfd87b5f28300ca0e, 0x9e74d1b791e07e49, 0xc612062576589ddb, + 0xf79687aed3eec552, 0x9abe14cd44753b53, 0xc16d9a0095928a28, + 0xf1c90080baf72cb2, 0x971da05074da7bef, 0xbce5086492111aeb, + 0xec1e4a7db69561a6, 0x9392ee8e921d5d08, 0xb877aa3236a4b44a, + 0xe69594bec44de15c, 0x901d7cf73ab0acda, 0xb424dc35095cd810, + 0xe12e13424bb40e14, 0x8cbccc096f5088cc, 0xafebff0bcb24aaff, + 0xdbe6fecebdedd5bf, 0x89705f4136b4a598, 0xabcc77118461cefd, + 0xd6bf94d5e57a42bd, 0x8637bd05af6c69b6, 0xa7c5ac471b478424, + 0xd1b71758e219652c, 0x83126e978d4fdf3c, 0xa3d70a3d70a3d70b, + 0xcccccccccccccccd, 0x8000000000000000, 0xa000000000000000, + 0xc800000000000000, 0xfa00000000000000, 0x9c40000000000000, + 0xc350000000000000, 0xf424000000000000, 0x9896800000000000, + 0xbebc200000000000, 0xee6b280000000000, 0x9502f90000000000, + 0xba43b74000000000, 0xe8d4a51000000000, 0x9184e72a00000000, + 0xb5e620f480000000, 0xe35fa931a0000000, 0x8e1bc9bf04000000, + 0xb1a2bc2ec5000000, 0xde0b6b3a76400000, 0x8ac7230489e80000, + 0xad78ebc5ac620000, 0xd8d726b7177a8000, 0x878678326eac9000, + 0xa968163f0a57b400, 0xd3c21bcecceda100, 0x84595161401484a0, + 0xa56fa5b99019a5c8, 0xcecb8f27f4200f3a, 0x813f3978f8940985, + 0xa18f07d736b90be6, 0xc9f2c9cd04674edf, 0xfc6f7c4045812297, + 0x9dc5ada82b70b59e, 0xc5371912364ce306, 0xf684df56c3e01bc7, + 0x9a130b963a6c115d, 0xc097ce7bc90715b4, 0xf0bdc21abb48db21, + 0x96769950b50d88f5, 0xbc143fa4e250eb32, 0xeb194f8e1ae525fe, + 0x92efd1b8d0cf37bf, 0xb7abc627050305ae, 0xe596b7b0c643c71a, + 0x8f7e32ce7bea5c70, 0xb35dbf821ae4f38c, 0xe0352f62a19e306f}; + return pow10_significands[k - float_info::min_k]; + } + + struct compute_mul_result { + carrier_uint result; + bool is_integer; + }; + struct compute_mul_parity_result { + bool parity; + bool is_integer; + }; + + static auto compute_mul(carrier_uint u, + const cache_entry_type& cache) noexcept + -> compute_mul_result { + auto r = umul96_upper64(u, cache); + return {static_cast(r >> 32), + static_cast(r) == 0}; + } + + static auto compute_delta(const cache_entry_type& cache, int beta) noexcept + -> uint32_t { + return static_cast(cache >> (64 - 1 - beta)); + } + + static auto compute_mul_parity(carrier_uint two_f, + const cache_entry_type& cache, + int beta) noexcept + -> compute_mul_parity_result { + FMT_ASSERT(beta >= 1, ""); + FMT_ASSERT(beta < 64, ""); + + auto r = umul96_lower64(two_f, cache); + return {((r >> (64 - beta)) & 1) != 0, + static_cast(r >> (32 - beta)) == 0}; + } + + static auto compute_left_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta) noexcept -> carrier_uint { + return static_cast( + (cache - (cache >> (num_significand_bits() + 2))) >> + (64 - num_significand_bits() - 1 - beta)); + } + + static auto compute_right_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta) noexcept -> carrier_uint { + return static_cast( + (cache + (cache >> (num_significand_bits() + 1))) >> + (64 - num_significand_bits() - 1 - beta)); + } + + static auto compute_round_up_for_shorter_interval_case( + const cache_entry_type& cache, int beta) noexcept -> carrier_uint { + return (static_cast( + cache >> (64 - num_significand_bits() - 2 - beta)) + + 1) / + 2; + } +}; + +template <> struct cache_accessor { + using carrier_uint = float_info::carrier_uint; + using cache_entry_type = uint128_fallback; + + static auto get_cached_power(int k) noexcept -> uint128_fallback { + FMT_ASSERT(k >= float_info::min_k && k <= float_info::max_k, + "k is out of range"); + + static constexpr const uint128_fallback pow10_significands[] = { +#if FMT_USE_FULL_CACHE_DRAGONBOX + {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b}, + {0x9faacf3df73609b1, 0x77b191618c54e9ad}, + {0xc795830d75038c1d, 0xd59df5b9ef6a2418}, + {0xf97ae3d0d2446f25, 0x4b0573286b44ad1e}, + {0x9becce62836ac577, 0x4ee367f9430aec33}, + {0xc2e801fb244576d5, 0x229c41f793cda740}, + {0xf3a20279ed56d48a, 0x6b43527578c11110}, + {0x9845418c345644d6, 0x830a13896b78aaaa}, + {0xbe5691ef416bd60c, 0x23cc986bc656d554}, + {0xedec366b11c6cb8f, 0x2cbfbe86b7ec8aa9}, + {0x94b3a202eb1c3f39, 0x7bf7d71432f3d6aa}, + {0xb9e08a83a5e34f07, 0xdaf5ccd93fb0cc54}, + {0xe858ad248f5c22c9, 0xd1b3400f8f9cff69}, + {0x91376c36d99995be, 0x23100809b9c21fa2}, + {0xb58547448ffffb2d, 0xabd40a0c2832a78b}, + {0xe2e69915b3fff9f9, 0x16c90c8f323f516d}, + {0x8dd01fad907ffc3b, 0xae3da7d97f6792e4}, + {0xb1442798f49ffb4a, 0x99cd11cfdf41779d}, + {0xdd95317f31c7fa1d, 0x40405643d711d584}, + {0x8a7d3eef7f1cfc52, 0x482835ea666b2573}, + {0xad1c8eab5ee43b66, 0xda3243650005eed0}, + {0xd863b256369d4a40, 0x90bed43e40076a83}, + {0x873e4f75e2224e68, 0x5a7744a6e804a292}, + {0xa90de3535aaae202, 0x711515d0a205cb37}, + {0xd3515c2831559a83, 0x0d5a5b44ca873e04}, + {0x8412d9991ed58091, 0xe858790afe9486c3}, + {0xa5178fff668ae0b6, 0x626e974dbe39a873}, + {0xce5d73ff402d98e3, 0xfb0a3d212dc81290}, + {0x80fa687f881c7f8e, 0x7ce66634bc9d0b9a}, + {0xa139029f6a239f72, 0x1c1fffc1ebc44e81}, + {0xc987434744ac874e, 0xa327ffb266b56221}, + {0xfbe9141915d7a922, 0x4bf1ff9f0062baa9}, + {0x9d71ac8fada6c9b5, 0x6f773fc3603db4aa}, + {0xc4ce17b399107c22, 0xcb550fb4384d21d4}, + {0xf6019da07f549b2b, 0x7e2a53a146606a49}, + {0x99c102844f94e0fb, 0x2eda7444cbfc426e}, + {0xc0314325637a1939, 0xfa911155fefb5309}, + {0xf03d93eebc589f88, 0x793555ab7eba27cb}, + {0x96267c7535b763b5, 0x4bc1558b2f3458df}, + {0xbbb01b9283253ca2, 0x9eb1aaedfb016f17}, + {0xea9c227723ee8bcb, 0x465e15a979c1cadd}, + {0x92a1958a7675175f, 0x0bfacd89ec191eca}, + {0xb749faed14125d36, 0xcef980ec671f667c}, + {0xe51c79a85916f484, 0x82b7e12780e7401b}, + {0x8f31cc0937ae58d2, 0xd1b2ecb8b0908811}, + {0xb2fe3f0b8599ef07, 0x861fa7e6dcb4aa16}, + {0xdfbdcece67006ac9, 0x67a791e093e1d49b}, + {0x8bd6a141006042bd, 0xe0c8bb2c5c6d24e1}, + {0xaecc49914078536d, 0x58fae9f773886e19}, + {0xda7f5bf590966848, 0xaf39a475506a899f}, + {0x888f99797a5e012d, 0x6d8406c952429604}, + {0xaab37fd7d8f58178, 0xc8e5087ba6d33b84}, + {0xd5605fcdcf32e1d6, 0xfb1e4a9a90880a65}, + {0x855c3be0a17fcd26, 0x5cf2eea09a550680}, + {0xa6b34ad8c9dfc06f, 0xf42faa48c0ea481f}, + {0xd0601d8efc57b08b, 0xf13b94daf124da27}, + {0x823c12795db6ce57, 0x76c53d08d6b70859}, + {0xa2cb1717b52481ed, 0x54768c4b0c64ca6f}, + {0xcb7ddcdda26da268, 0xa9942f5dcf7dfd0a}, + {0xfe5d54150b090b02, 0xd3f93b35435d7c4d}, + {0x9efa548d26e5a6e1, 0xc47bc5014a1a6db0}, + {0xc6b8e9b0709f109a, 0x359ab6419ca1091c}, + {0xf867241c8cc6d4c0, 0xc30163d203c94b63}, + {0x9b407691d7fc44f8, 0x79e0de63425dcf1e}, + {0xc21094364dfb5636, 0x985915fc12f542e5}, + {0xf294b943e17a2bc4, 0x3e6f5b7b17b2939e}, + {0x979cf3ca6cec5b5a, 0xa705992ceecf9c43}, + {0xbd8430bd08277231, 0x50c6ff782a838354}, + {0xece53cec4a314ebd, 0xa4f8bf5635246429}, + {0x940f4613ae5ed136, 0x871b7795e136be9a}, + {0xb913179899f68584, 0x28e2557b59846e40}, + {0xe757dd7ec07426e5, 0x331aeada2fe589d0}, + {0x9096ea6f3848984f, 0x3ff0d2c85def7622}, + {0xb4bca50b065abe63, 0x0fed077a756b53aa}, + {0xe1ebce4dc7f16dfb, 0xd3e8495912c62895}, + {0x8d3360f09cf6e4bd, 0x64712dd7abbbd95d}, + {0xb080392cc4349dec, 0xbd8d794d96aacfb4}, + {0xdca04777f541c567, 0xecf0d7a0fc5583a1}, + {0x89e42caaf9491b60, 0xf41686c49db57245}, + {0xac5d37d5b79b6239, 0x311c2875c522ced6}, + {0xd77485cb25823ac7, 0x7d633293366b828c}, + {0x86a8d39ef77164bc, 0xae5dff9c02033198}, + {0xa8530886b54dbdeb, 0xd9f57f830283fdfd}, + {0xd267caa862a12d66, 0xd072df63c324fd7c}, + {0x8380dea93da4bc60, 0x4247cb9e59f71e6e}, + {0xa46116538d0deb78, 0x52d9be85f074e609}, + {0xcd795be870516656, 0x67902e276c921f8c}, + {0x806bd9714632dff6, 0x00ba1cd8a3db53b7}, + {0xa086cfcd97bf97f3, 0x80e8a40eccd228a5}, + {0xc8a883c0fdaf7df0, 0x6122cd128006b2ce}, + {0xfad2a4b13d1b5d6c, 0x796b805720085f82}, + {0x9cc3a6eec6311a63, 0xcbe3303674053bb1}, + {0xc3f490aa77bd60fc, 0xbedbfc4411068a9d}, + {0xf4f1b4d515acb93b, 0xee92fb5515482d45}, + {0x991711052d8bf3c5, 0x751bdd152d4d1c4b}, + {0xbf5cd54678eef0b6, 0xd262d45a78a0635e}, + {0xef340a98172aace4, 0x86fb897116c87c35}, + {0x9580869f0e7aac0e, 0xd45d35e6ae3d4da1}, + {0xbae0a846d2195712, 0x8974836059cca10a}, + {0xe998d258869facd7, 0x2bd1a438703fc94c}, + {0x91ff83775423cc06, 0x7b6306a34627ddd0}, + {0xb67f6455292cbf08, 0x1a3bc84c17b1d543}, + {0xe41f3d6a7377eeca, 0x20caba5f1d9e4a94}, + {0x8e938662882af53e, 0x547eb47b7282ee9d}, + {0xb23867fb2a35b28d, 0xe99e619a4f23aa44}, + {0xdec681f9f4c31f31, 0x6405fa00e2ec94d5}, + {0x8b3c113c38f9f37e, 0xde83bc408dd3dd05}, + {0xae0b158b4738705e, 0x9624ab50b148d446}, + {0xd98ddaee19068c76, 0x3badd624dd9b0958}, + {0x87f8a8d4cfa417c9, 0xe54ca5d70a80e5d7}, + {0xa9f6d30a038d1dbc, 0x5e9fcf4ccd211f4d}, + {0xd47487cc8470652b, 0x7647c32000696720}, + {0x84c8d4dfd2c63f3b, 0x29ecd9f40041e074}, + {0xa5fb0a17c777cf09, 0xf468107100525891}, + {0xcf79cc9db955c2cc, 0x7182148d4066eeb5}, + {0x81ac1fe293d599bf, 0xc6f14cd848405531}, + {0xa21727db38cb002f, 0xb8ada00e5a506a7d}, + {0xca9cf1d206fdc03b, 0xa6d90811f0e4851d}, + {0xfd442e4688bd304a, 0x908f4a166d1da664}, + {0x9e4a9cec15763e2e, 0x9a598e4e043287ff}, + {0xc5dd44271ad3cdba, 0x40eff1e1853f29fe}, + {0xf7549530e188c128, 0xd12bee59e68ef47d}, + {0x9a94dd3e8cf578b9, 0x82bb74f8301958cf}, + {0xc13a148e3032d6e7, 0xe36a52363c1faf02}, + {0xf18899b1bc3f8ca1, 0xdc44e6c3cb279ac2}, + {0x96f5600f15a7b7e5, 0x29ab103a5ef8c0ba}, + {0xbcb2b812db11a5de, 0x7415d448f6b6f0e8}, + {0xebdf661791d60f56, 0x111b495b3464ad22}, + {0x936b9fcebb25c995, 0xcab10dd900beec35}, + {0xb84687c269ef3bfb, 0x3d5d514f40eea743}, + {0xe65829b3046b0afa, 0x0cb4a5a3112a5113}, + {0x8ff71a0fe2c2e6dc, 0x47f0e785eaba72ac}, + {0xb3f4e093db73a093, 0x59ed216765690f57}, + {0xe0f218b8d25088b8, 0x306869c13ec3532d}, + {0x8c974f7383725573, 0x1e414218c73a13fc}, + {0xafbd2350644eeacf, 0xe5d1929ef90898fb}, + {0xdbac6c247d62a583, 0xdf45f746b74abf3a}, + {0x894bc396ce5da772, 0x6b8bba8c328eb784}, + {0xab9eb47c81f5114f, 0x066ea92f3f326565}, + {0xd686619ba27255a2, 0xc80a537b0efefebe}, + {0x8613fd0145877585, 0xbd06742ce95f5f37}, + {0xa798fc4196e952e7, 0x2c48113823b73705}, + {0xd17f3b51fca3a7a0, 0xf75a15862ca504c6}, + {0x82ef85133de648c4, 0x9a984d73dbe722fc}, + {0xa3ab66580d5fdaf5, 0xc13e60d0d2e0ebbb}, + {0xcc963fee10b7d1b3, 0x318df905079926a9}, + {0xffbbcfe994e5c61f, 0xfdf17746497f7053}, + {0x9fd561f1fd0f9bd3, 0xfeb6ea8bedefa634}, + {0xc7caba6e7c5382c8, 0xfe64a52ee96b8fc1}, + {0xf9bd690a1b68637b, 0x3dfdce7aa3c673b1}, + {0x9c1661a651213e2d, 0x06bea10ca65c084f}, + {0xc31bfa0fe5698db8, 0x486e494fcff30a63}, + {0xf3e2f893dec3f126, 0x5a89dba3c3efccfb}, + {0x986ddb5c6b3a76b7, 0xf89629465a75e01d}, + {0xbe89523386091465, 0xf6bbb397f1135824}, + {0xee2ba6c0678b597f, 0x746aa07ded582e2d}, + {0x94db483840b717ef, 0xa8c2a44eb4571cdd}, + {0xba121a4650e4ddeb, 0x92f34d62616ce414}, + {0xe896a0d7e51e1566, 0x77b020baf9c81d18}, + {0x915e2486ef32cd60, 0x0ace1474dc1d122f}, + {0xb5b5ada8aaff80b8, 0x0d819992132456bb}, + {0xe3231912d5bf60e6, 0x10e1fff697ed6c6a}, + {0x8df5efabc5979c8f, 0xca8d3ffa1ef463c2}, + {0xb1736b96b6fd83b3, 0xbd308ff8a6b17cb3}, + {0xddd0467c64bce4a0, 0xac7cb3f6d05ddbdf}, + {0x8aa22c0dbef60ee4, 0x6bcdf07a423aa96c}, + {0xad4ab7112eb3929d, 0x86c16c98d2c953c7}, + {0xd89d64d57a607744, 0xe871c7bf077ba8b8}, + {0x87625f056c7c4a8b, 0x11471cd764ad4973}, + {0xa93af6c6c79b5d2d, 0xd598e40d3dd89bd0}, + {0xd389b47879823479, 0x4aff1d108d4ec2c4}, + {0x843610cb4bf160cb, 0xcedf722a585139bb}, + {0xa54394fe1eedb8fe, 0xc2974eb4ee658829}, + {0xce947a3da6a9273e, 0x733d226229feea33}, + {0x811ccc668829b887, 0x0806357d5a3f5260}, + {0xa163ff802a3426a8, 0xca07c2dcb0cf26f8}, + {0xc9bcff6034c13052, 0xfc89b393dd02f0b6}, + {0xfc2c3f3841f17c67, 0xbbac2078d443ace3}, + {0x9d9ba7832936edc0, 0xd54b944b84aa4c0e}, + {0xc5029163f384a931, 0x0a9e795e65d4df12}, + {0xf64335bcf065d37d, 0x4d4617b5ff4a16d6}, + {0x99ea0196163fa42e, 0x504bced1bf8e4e46}, + {0xc06481fb9bcf8d39, 0xe45ec2862f71e1d7}, + {0xf07da27a82c37088, 0x5d767327bb4e5a4d}, + {0x964e858c91ba2655, 0x3a6a07f8d510f870}, + {0xbbe226efb628afea, 0x890489f70a55368c}, + {0xeadab0aba3b2dbe5, 0x2b45ac74ccea842f}, + {0x92c8ae6b464fc96f, 0x3b0b8bc90012929e}, + {0xb77ada0617e3bbcb, 0x09ce6ebb40173745}, + {0xe55990879ddcaabd, 0xcc420a6a101d0516}, + {0x8f57fa54c2a9eab6, 0x9fa946824a12232e}, + {0xb32df8e9f3546564, 0x47939822dc96abfa}, + {0xdff9772470297ebd, 0x59787e2b93bc56f8}, + {0x8bfbea76c619ef36, 0x57eb4edb3c55b65b}, + {0xaefae51477a06b03, 0xede622920b6b23f2}, + {0xdab99e59958885c4, 0xe95fab368e45ecee}, + {0x88b402f7fd75539b, 0x11dbcb0218ebb415}, + {0xaae103b5fcd2a881, 0xd652bdc29f26a11a}, + {0xd59944a37c0752a2, 0x4be76d3346f04960}, + {0x857fcae62d8493a5, 0x6f70a4400c562ddc}, + {0xa6dfbd9fb8e5b88e, 0xcb4ccd500f6bb953}, + {0xd097ad07a71f26b2, 0x7e2000a41346a7a8}, + {0x825ecc24c873782f, 0x8ed400668c0c28c9}, + {0xa2f67f2dfa90563b, 0x728900802f0f32fb}, + {0xcbb41ef979346bca, 0x4f2b40a03ad2ffba}, + {0xfea126b7d78186bc, 0xe2f610c84987bfa9}, + {0x9f24b832e6b0f436, 0x0dd9ca7d2df4d7ca}, + {0xc6ede63fa05d3143, 0x91503d1c79720dbc}, + 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{0xeb57ff22fc0c7959, 0xa90cb506d155a7eb}, + {0x9316ff75dd87cbd8, 0x09a7f12442d588f3}, + {0xb7dcbf5354e9bece, 0x0c11ed6d538aeb30}, + {0xe5d3ef282a242e81, 0x8f1668c8a86da5fb}, + {0x8fa475791a569d10, 0xf96e017d694487bd}, + {0xb38d92d760ec4455, 0x37c981dcc395a9ad}, + {0xe070f78d3927556a, 0x85bbe253f47b1418}, + {0x8c469ab843b89562, 0x93956d7478ccec8f}, + {0xaf58416654a6babb, 0x387ac8d1970027b3}, + {0xdb2e51bfe9d0696a, 0x06997b05fcc0319f}, + {0x88fcf317f22241e2, 0x441fece3bdf81f04}, + {0xab3c2fddeeaad25a, 0xd527e81cad7626c4}, + {0xd60b3bd56a5586f1, 0x8a71e223d8d3b075}, + {0x85c7056562757456, 0xf6872d5667844e4a}, + {0xa738c6bebb12d16c, 0xb428f8ac016561dc}, + {0xd106f86e69d785c7, 0xe13336d701beba53}, + {0x82a45b450226b39c, 0xecc0024661173474}, + {0xa34d721642b06084, 0x27f002d7f95d0191}, + {0xcc20ce9bd35c78a5, 0x31ec038df7b441f5}, + {0xff290242c83396ce, 0x7e67047175a15272}, + {0x9f79a169bd203e41, 0x0f0062c6e984d387}, + {0xc75809c42c684dd1, 0x52c07b78a3e60869}, + {0xf92e0c3537826145, 0xa7709a56ccdf8a83}, + {0x9bbcc7a142b17ccb, 0x88a66076400bb692}, + {0xc2abf989935ddbfe, 0x6acff893d00ea436}, + {0xf356f7ebf83552fe, 0x0583f6b8c4124d44}, + {0x98165af37b2153de, 0xc3727a337a8b704b}, + {0xbe1bf1b059e9a8d6, 0x744f18c0592e4c5d}, + {0xeda2ee1c7064130c, 0x1162def06f79df74}, + {0x9485d4d1c63e8be7, 0x8addcb5645ac2ba9}, + {0xb9a74a0637ce2ee1, 0x6d953e2bd7173693}, + {0xe8111c87c5c1ba99, 0xc8fa8db6ccdd0438}, + {0x910ab1d4db9914a0, 0x1d9c9892400a22a3}, + {0xb54d5e4a127f59c8, 0x2503beb6d00cab4c}, + {0xe2a0b5dc971f303a, 0x2e44ae64840fd61e}, + {0x8da471a9de737e24, 0x5ceaecfed289e5d3}, + {0xb10d8e1456105dad, 0x7425a83e872c5f48}, + {0xdd50f1996b947518, 0xd12f124e28f7771a}, + {0x8a5296ffe33cc92f, 0x82bd6b70d99aaa70}, + {0xace73cbfdc0bfb7b, 0x636cc64d1001550c}, + {0xd8210befd30efa5a, 0x3c47f7e05401aa4f}, + {0x8714a775e3e95c78, 0x65acfaec34810a72}, + {0xa8d9d1535ce3b396, 0x7f1839a741a14d0e}, + {0xd31045a8341ca07c, 0x1ede48111209a051}, + {0x83ea2b892091e44d, 0x934aed0aab460433}, + {0xa4e4b66b68b65d60, 0xf81da84d56178540}, + {0xce1de40642e3f4b9, 0x36251260ab9d668f}, + {0x80d2ae83e9ce78f3, 0xc1d72b7c6b42601a}, + {0xa1075a24e4421730, 0xb24cf65b8612f820}, + {0xc94930ae1d529cfc, 0xdee033f26797b628}, + {0xfb9b7cd9a4a7443c, 0x169840ef017da3b2}, + {0x9d412e0806e88aa5, 0x8e1f289560ee864f}, + {0xc491798a08a2ad4e, 0xf1a6f2bab92a27e3}, + {0xf5b5d7ec8acb58a2, 0xae10af696774b1dc}, + {0x9991a6f3d6bf1765, 0xacca6da1e0a8ef2a}, + {0xbff610b0cc6edd3f, 0x17fd090a58d32af4}, + {0xeff394dcff8a948e, 0xddfc4b4cef07f5b1}, + {0x95f83d0a1fb69cd9, 0x4abdaf101564f98f}, + {0xbb764c4ca7a4440f, 0x9d6d1ad41abe37f2}, + {0xea53df5fd18d5513, 0x84c86189216dc5ee}, + {0x92746b9be2f8552c, 0x32fd3cf5b4e49bb5}, + {0xb7118682dbb66a77, 0x3fbc8c33221dc2a2}, + {0xe4d5e82392a40515, 0x0fabaf3feaa5334b}, + {0x8f05b1163ba6832d, 0x29cb4d87f2a7400f}, + {0xb2c71d5bca9023f8, 0x743e20e9ef511013}, + {0xdf78e4b2bd342cf6, 0x914da9246b255417}, + {0x8bab8eefb6409c1a, 0x1ad089b6c2f7548f}, + {0xae9672aba3d0c320, 0xa184ac2473b529b2}, + {0xda3c0f568cc4f3e8, 0xc9e5d72d90a2741f}, + {0x8865899617fb1871, 0x7e2fa67c7a658893}, + {0xaa7eebfb9df9de8d, 0xddbb901b98feeab8}, + {0xd51ea6fa85785631, 0x552a74227f3ea566}, + {0x8533285c936b35de, 0xd53a88958f872760}, + {0xa67ff273b8460356, 0x8a892abaf368f138}, + {0xd01fef10a657842c, 0x2d2b7569b0432d86}, + {0x8213f56a67f6b29b, 0x9c3b29620e29fc74}, + {0xa298f2c501f45f42, 0x8349f3ba91b47b90}, + {0xcb3f2f7642717713, 0x241c70a936219a74}, + {0xfe0efb53d30dd4d7, 0xed238cd383aa0111}, + {0x9ec95d1463e8a506, 0xf4363804324a40ab}, + {0xc67bb4597ce2ce48, 0xb143c6053edcd0d6}, + {0xf81aa16fdc1b81da, 0xdd94b7868e94050b}, + {0x9b10a4e5e9913128, 0xca7cf2b4191c8327}, + {0xc1d4ce1f63f57d72, 0xfd1c2f611f63a3f1}, + {0xf24a01a73cf2dccf, 0xbc633b39673c8ced}, + {0x976e41088617ca01, 0xd5be0503e085d814}, + {0xbd49d14aa79dbc82, 0x4b2d8644d8a74e19}, + {0xec9c459d51852ba2, 0xddf8e7d60ed1219f}, + {0x93e1ab8252f33b45, 0xcabb90e5c942b504}, + {0xb8da1662e7b00a17, 0x3d6a751f3b936244}, + {0xe7109bfba19c0c9d, 0x0cc512670a783ad5}, + {0x906a617d450187e2, 0x27fb2b80668b24c6}, + {0xb484f9dc9641e9da, 0xb1f9f660802dedf7}, + {0xe1a63853bbd26451, 0x5e7873f8a0396974}, + {0x8d07e33455637eb2, 0xdb0b487b6423e1e9}, + {0xb049dc016abc5e5f, 0x91ce1a9a3d2cda63}, + {0xdc5c5301c56b75f7, 0x7641a140cc7810fc}, + {0x89b9b3e11b6329ba, 0xa9e904c87fcb0a9e}, + {0xac2820d9623bf429, 0x546345fa9fbdcd45}, + {0xd732290fbacaf133, 0xa97c177947ad4096}, + {0x867f59a9d4bed6c0, 0x49ed8eabcccc485e}, + {0xa81f301449ee8c70, 0x5c68f256bfff5a75}, + {0xd226fc195c6a2f8c, 0x73832eec6fff3112}, + {0x83585d8fd9c25db7, 0xc831fd53c5ff7eac}, + {0xa42e74f3d032f525, 0xba3e7ca8b77f5e56}, + {0xcd3a1230c43fb26f, 0x28ce1bd2e55f35ec}, + {0x80444b5e7aa7cf85, 0x7980d163cf5b81b4}, + {0xa0555e361951c366, 0xd7e105bcc3326220}, + {0xc86ab5c39fa63440, 0x8dd9472bf3fefaa8}, + {0xfa856334878fc150, 0xb14f98f6f0feb952}, + {0x9c935e00d4b9d8d2, 0x6ed1bf9a569f33d4}, + {0xc3b8358109e84f07, 0x0a862f80ec4700c9}, + {0xf4a642e14c6262c8, 0xcd27bb612758c0fb}, + {0x98e7e9cccfbd7dbd, 0x8038d51cb897789d}, + {0xbf21e44003acdd2c, 0xe0470a63e6bd56c4}, + {0xeeea5d5004981478, 0x1858ccfce06cac75}, + {0x95527a5202df0ccb, 0x0f37801e0c43ebc9}, + {0xbaa718e68396cffd, 0xd30560258f54e6bb}, + {0xe950df20247c83fd, 0x47c6b82ef32a206a}, + {0x91d28b7416cdd27e, 0x4cdc331d57fa5442}, + {0xb6472e511c81471d, 0xe0133fe4adf8e953}, + {0xe3d8f9e563a198e5, 0x58180fddd97723a7}, + {0x8e679c2f5e44ff8f, 0x570f09eaa7ea7649}, + {0xb201833b35d63f73, 0x2cd2cc6551e513db}, + {0xde81e40a034bcf4f, 0xf8077f7ea65e58d2}, + {0x8b112e86420f6191, 0xfb04afaf27faf783}, + {0xadd57a27d29339f6, 0x79c5db9af1f9b564}, + {0xd94ad8b1c7380874, 0x18375281ae7822bd}, + {0x87cec76f1c830548, 0x8f2293910d0b15b6}, + {0xa9c2794ae3a3c69a, 0xb2eb3875504ddb23}, + {0xd433179d9c8cb841, 0x5fa60692a46151ec}, + {0x849feec281d7f328, 0xdbc7c41ba6bcd334}, + {0xa5c7ea73224deff3, 0x12b9b522906c0801}, + {0xcf39e50feae16bef, 0xd768226b34870a01}, + {0x81842f29f2cce375, 0xe6a1158300d46641}, + {0xa1e53af46f801c53, 0x60495ae3c1097fd1}, + {0xca5e89b18b602368, 0x385bb19cb14bdfc5}, + {0xfcf62c1dee382c42, 0x46729e03dd9ed7b6}, + {0x9e19db92b4e31ba9, 0x6c07a2c26a8346d2}, + {0xc5a05277621be293, 0xc7098b7305241886}, + {0xf70867153aa2db38, 0xb8cbee4fc66d1ea8}, + {0x9a65406d44a5c903, 0x737f74f1dc043329}, + {0xc0fe908895cf3b44, 0x505f522e53053ff3}, + {0xf13e34aabb430a15, 0x647726b9e7c68ff0}, + {0x96c6e0eab509e64d, 0x5eca783430dc19f6}, + {0xbc789925624c5fe0, 0xb67d16413d132073}, + {0xeb96bf6ebadf77d8, 0xe41c5bd18c57e890}, + {0x933e37a534cbaae7, 0x8e91b962f7b6f15a}, + {0xb80dc58e81fe95a1, 0x723627bbb5a4adb1}, + {0xe61136f2227e3b09, 0xcec3b1aaa30dd91d}, + {0x8fcac257558ee4e6, 0x213a4f0aa5e8a7b2}, + {0xb3bd72ed2af29e1f, 0xa988e2cd4f62d19e}, + {0xe0accfa875af45a7, 0x93eb1b80a33b8606}, + {0x8c6c01c9498d8b88, 0xbc72f130660533c4}, + {0xaf87023b9bf0ee6a, 0xeb8fad7c7f8680b5}, + {0xdb68c2ca82ed2a05, 0xa67398db9f6820e2}, +#else + {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b}, + {0xce5d73ff402d98e3, 0xfb0a3d212dc81290}, + {0xa6b34ad8c9dfc06f, 0xf42faa48c0ea481f}, + {0x86a8d39ef77164bc, 0xae5dff9c02033198}, + {0xd98ddaee19068c76, 0x3badd624dd9b0958}, + {0xafbd2350644eeacf, 0xe5d1929ef90898fb}, + {0x8df5efabc5979c8f, 0xca8d3ffa1ef463c2}, + {0xe55990879ddcaabd, 0xcc420a6a101d0516}, + {0xb94470938fa89bce, 0xf808e40e8d5b3e6a}, + {0x95a8637627989aad, 0xdde7001379a44aa9}, + {0xf1c90080baf72cb1, 0x5324c68b12dd6339}, + {0xc350000000000000, 0x0000000000000000}, + {0x9dc5ada82b70b59d, 0xf020000000000000}, + {0xfee50b7025c36a08, 0x02f236d04753d5b5}, + {0xcde6fd5e09abcf26, 0xed4c0226b55e6f87}, + {0xa6539930bf6bff45, 0x84db8346b786151d}, + {0x865b86925b9bc5c2, 0x0b8a2392ba45a9b3}, + {0xd910f7ff28069da4, 0x1b2ba1518094da05}, + {0xaf58416654a6babb, 0x387ac8d1970027b3}, + {0x8da471a9de737e24, 0x5ceaecfed289e5d3}, + {0xe4d5e82392a40515, 0x0fabaf3feaa5334b}, + {0xb8da1662e7b00a17, 0x3d6a751f3b936244}, + {0x95527a5202df0ccb, 0x0f37801e0c43ebc9}, + {0xf13e34aabb430a15, 0x647726b9e7c68ff0} +#endif + }; + +#if FMT_USE_FULL_CACHE_DRAGONBOX + return pow10_significands[k - float_info::min_k]; +#else + static constexpr const uint64_t powers_of_5_64[] = { + 0x0000000000000001, 0x0000000000000005, 0x0000000000000019, + 0x000000000000007d, 0x0000000000000271, 0x0000000000000c35, + 0x0000000000003d09, 0x000000000001312d, 0x000000000005f5e1, + 0x00000000001dcd65, 0x00000000009502f9, 0x0000000002e90edd, + 0x000000000e8d4a51, 0x0000000048c27395, 0x000000016bcc41e9, + 0x000000071afd498d, 0x0000002386f26fc1, 0x000000b1a2bc2ec5, + 0x000003782dace9d9, 0x00001158e460913d, 0x000056bc75e2d631, + 0x0001b1ae4d6e2ef5, 0x000878678326eac9, 0x002a5a058fc295ed, + 0x00d3c21bcecceda1, 0x0422ca8b0a00a425, 0x14adf4b7320334b9}; + + static const int compression_ratio = 27; + + // Compute base index. + int cache_index = (k - float_info::min_k) / compression_ratio; + int kb = cache_index * compression_ratio + float_info::min_k; + int offset = k - kb; + + // Get base cache. + uint128_fallback base_cache = pow10_significands[cache_index]; + if (offset == 0) return base_cache; + + // Compute the required amount of bit-shift. + int alpha = floor_log2_pow10(kb + offset) - floor_log2_pow10(kb) - offset; + FMT_ASSERT(alpha > 0 && alpha < 64, "shifting error detected"); + + // Try to recover the real cache. + uint64_t pow5 = powers_of_5_64[offset]; + uint128_fallback recovered_cache = umul128(base_cache.high(), pow5); + uint128_fallback middle_low = umul128(base_cache.low(), pow5); + + recovered_cache += middle_low.high(); + + uint64_t high_to_middle = recovered_cache.high() << (64 - alpha); + uint64_t middle_to_low = recovered_cache.low() << (64 - alpha); + + recovered_cache = + uint128_fallback{(recovered_cache.low() >> alpha) | high_to_middle, + ((middle_low.low() >> alpha) | middle_to_low)}; + FMT_ASSERT(recovered_cache.low() + 1 != 0, ""); + return {recovered_cache.high(), recovered_cache.low() + 1}; +#endif + } + + struct compute_mul_result { + carrier_uint result; + bool is_integer; + }; + struct compute_mul_parity_result { + bool parity; + bool is_integer; + }; + + static auto compute_mul(carrier_uint u, + const cache_entry_type& cache) noexcept + -> compute_mul_result { + auto r = umul192_upper128(u, cache); + return {r.high(), r.low() == 0}; + } + + static auto compute_delta(cache_entry_type const& cache, int beta) noexcept + -> uint32_t { + return static_cast(cache.high() >> (64 - 1 - beta)); + } + + static auto compute_mul_parity(carrier_uint two_f, + const cache_entry_type& cache, + int beta) noexcept + -> compute_mul_parity_result { + FMT_ASSERT(beta >= 1, ""); + FMT_ASSERT(beta < 64, ""); + + auto r = umul192_lower128(two_f, cache); + return {((r.high() >> (64 - beta)) & 1) != 0, + ((r.high() << beta) | (r.low() >> (64 - beta))) == 0}; + } + + static auto compute_left_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta) noexcept -> carrier_uint { + return (cache.high() - + (cache.high() >> (num_significand_bits() + 2))) >> + (64 - num_significand_bits() - 1 - beta); + } + + static auto compute_right_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta) noexcept -> carrier_uint { + return (cache.high() + + (cache.high() >> (num_significand_bits() + 1))) >> + (64 - num_significand_bits() - 1 - beta); + } + + static auto compute_round_up_for_shorter_interval_case( + const cache_entry_type& cache, int beta) noexcept -> carrier_uint { + return ((cache.high() >> (64 - num_significand_bits() - 2 - beta)) + + 1) / + 2; + } +}; + +FMT_FUNC auto get_cached_power(int k) noexcept -> uint128_fallback { + return cache_accessor::get_cached_power(k); +} + +// Various integer checks +template +auto is_left_endpoint_integer_shorter_interval(int exponent) noexcept -> bool { + const int case_shorter_interval_left_endpoint_lower_threshold = 2; + const int case_shorter_interval_left_endpoint_upper_threshold = 3; + return exponent >= case_shorter_interval_left_endpoint_lower_threshold && + exponent <= case_shorter_interval_left_endpoint_upper_threshold; +} + +// Remove trailing zeros from n and return the number of zeros removed (float) +FMT_INLINE int remove_trailing_zeros(uint32_t& n, int s = 0) noexcept { + FMT_ASSERT(n != 0, ""); + // Modular inverse of 5 (mod 2^32): (mod_inv_5 * 5) mod 2^32 = 1. + constexpr uint32_t mod_inv_5 = 0xcccccccd; + constexpr uint32_t mod_inv_25 = 0xc28f5c29; // = mod_inv_5 * mod_inv_5 + + while (true) { + auto q = rotr(n * mod_inv_25, 2); + if (q > max_value() / 100) break; + n = q; + s += 2; + } + auto q = rotr(n * mod_inv_5, 1); + if (q <= max_value() / 10) { + n = q; + s |= 1; + } + return s; +} + +// Removes trailing zeros and returns the number of zeros removed (double) +FMT_INLINE int remove_trailing_zeros(uint64_t& n) noexcept { + FMT_ASSERT(n != 0, ""); + + // This magic number is ceil(2^90 / 10^8). + constexpr uint64_t magic_number = 12379400392853802749ull; + auto nm = umul128(n, magic_number); + + // Is n is divisible by 10^8? + if ((nm.high() & ((1ull << (90 - 64)) - 1)) == 0 && nm.low() < magic_number) { + // If yes, work with the quotient... + auto n32 = static_cast(nm.high() >> (90 - 64)); + // ... and use the 32 bit variant of the function + int s = remove_trailing_zeros(n32, 8); + n = n32; + return s; + } + + // If n is not divisible by 10^8, work with n itself. + constexpr uint64_t mod_inv_5 = 0xcccccccccccccccd; + constexpr uint64_t mod_inv_25 = 0x8f5c28f5c28f5c29; // mod_inv_5 * mod_inv_5 + + int s = 0; + while (true) { + auto q = rotr(n * mod_inv_25, 2); + if (q > max_value() / 100) break; + n = q; + s += 2; + } + auto q = rotr(n * mod_inv_5, 1); + if (q <= max_value() / 10) { + n = q; + s |= 1; + } + + return s; +} + +// The main algorithm for shorter interval case +template +FMT_INLINE decimal_fp shorter_interval_case(int exponent) noexcept { + decimal_fp ret_value; + // Compute k and beta + const int minus_k = floor_log10_pow2_minus_log10_4_over_3(exponent); + const int beta = exponent + floor_log2_pow10(-minus_k); + + // Compute xi and zi + using cache_entry_type = typename cache_accessor::cache_entry_type; + const cache_entry_type cache = cache_accessor::get_cached_power(-minus_k); + + auto xi = cache_accessor::compute_left_endpoint_for_shorter_interval_case( + cache, beta); + auto zi = cache_accessor::compute_right_endpoint_for_shorter_interval_case( + cache, beta); + + // If the left endpoint is not an integer, increase it + if (!is_left_endpoint_integer_shorter_interval(exponent)) ++xi; + + // Try bigger divisor + ret_value.significand = zi / 10; + + // If succeed, remove trailing zeros if necessary and return + if (ret_value.significand * 10 >= xi) { + ret_value.exponent = minus_k + 1; + ret_value.exponent += remove_trailing_zeros(ret_value.significand); + return ret_value; + } + + // Otherwise, compute the round-up of y + ret_value.significand = + cache_accessor::compute_round_up_for_shorter_interval_case(cache, + beta); + ret_value.exponent = minus_k; + + // When tie occurs, choose one of them according to the rule + if (exponent >= float_info::shorter_interval_tie_lower_threshold && + exponent <= float_info::shorter_interval_tie_upper_threshold) { + ret_value.significand = ret_value.significand % 2 == 0 + ? ret_value.significand + : ret_value.significand - 1; + } else if (ret_value.significand < xi) { + ++ret_value.significand; + } + return ret_value; +} + +template auto to_decimal(T x) noexcept -> decimal_fp { + // Step 1: integer promotion & Schubfach multiplier calculation. + + using carrier_uint = typename float_info::carrier_uint; + using cache_entry_type = typename cache_accessor::cache_entry_type; + auto br = bit_cast(x); + + // Extract significand bits and exponent bits. + const carrier_uint significand_mask = + (static_cast(1) << num_significand_bits()) - 1; + carrier_uint significand = (br & significand_mask); + int exponent = + static_cast((br & exponent_mask()) >> num_significand_bits()); + + if (exponent != 0) { // Check if normal. + exponent -= exponent_bias() + num_significand_bits(); + + // Shorter interval case; proceed like Schubfach. + // In fact, when exponent == 1 and significand == 0, the interval is + // regular. However, it can be shown that the end-results are anyway same. + if (significand == 0) return shorter_interval_case(exponent); + + significand |= (static_cast(1) << num_significand_bits()); + } else { + // Subnormal case; the interval is always regular. + if (significand == 0) return {0, 0}; + exponent = + std::numeric_limits::min_exponent - num_significand_bits() - 1; + } + + const bool include_left_endpoint = (significand % 2 == 0); + const bool include_right_endpoint = include_left_endpoint; + + // Compute k and beta. + const int minus_k = floor_log10_pow2(exponent) - float_info::kappa; + const cache_entry_type cache = cache_accessor::get_cached_power(-minus_k); + const int beta = exponent + floor_log2_pow10(-minus_k); + + // Compute zi and deltai. + // 10^kappa <= deltai < 10^(kappa + 1) + const uint32_t deltai = cache_accessor::compute_delta(cache, beta); + const carrier_uint two_fc = significand << 1; + + // For the case of binary32, the result of integer check is not correct for + // 29711844 * 2^-82 + // = 6.1442653300000000008655037797566933477355632930994033813476... * 10^-18 + // and 29711844 * 2^-81 + // = 1.2288530660000000001731007559513386695471126586198806762695... * 10^-17, + // and they are the unique counterexamples. However, since 29711844 is even, + // this does not cause any problem for the endpoints calculations; it can only + // cause a problem when we need to perform integer check for the center. + // Fortunately, with these inputs, that branch is never executed, so we are + // fine. + const typename cache_accessor::compute_mul_result z_mul = + cache_accessor::compute_mul((two_fc | 1) << beta, cache); + + // Step 2: Try larger divisor; remove trailing zeros if necessary. + + // Using an upper bound on zi, we might be able to optimize the division + // better than the compiler; we are computing zi / big_divisor here. + decimal_fp ret_value; + ret_value.significand = divide_by_10_to_kappa_plus_1(z_mul.result); + uint32_t r = static_cast(z_mul.result - float_info::big_divisor * + ret_value.significand); + + if (r < deltai) { + // Exclude the right endpoint if necessary. + if (r == 0 && (z_mul.is_integer & !include_right_endpoint)) { + --ret_value.significand; + r = float_info::big_divisor; + goto small_divisor_case_label; + } + } else if (r > deltai) { + goto small_divisor_case_label; + } else { + // r == deltai; compare fractional parts. + const typename cache_accessor::compute_mul_parity_result x_mul = + cache_accessor::compute_mul_parity(two_fc - 1, cache, beta); + + if (!(x_mul.parity | (x_mul.is_integer & include_left_endpoint))) + goto small_divisor_case_label; + } + ret_value.exponent = minus_k + float_info::kappa + 1; + + // We may need to remove trailing zeros. + ret_value.exponent += remove_trailing_zeros(ret_value.significand); + return ret_value; + + // Step 3: Find the significand with the smaller divisor. + +small_divisor_case_label: + ret_value.significand *= 10; + ret_value.exponent = minus_k + float_info::kappa; + + uint32_t dist = r - (deltai / 2) + (float_info::small_divisor / 2); + const bool approx_y_parity = + ((dist ^ (float_info::small_divisor / 2)) & 1) != 0; + + // Is dist divisible by 10^kappa? + const bool divisible_by_small_divisor = + check_divisibility_and_divide_by_pow10::kappa>(dist); + + // Add dist / 10^kappa to the significand. + ret_value.significand += dist; + + if (!divisible_by_small_divisor) return ret_value; + + // Check z^(f) >= epsilon^(f). + // We have either yi == zi - epsiloni or yi == (zi - epsiloni) - 1, + // where yi == zi - epsiloni if and only if z^(f) >= epsilon^(f). + // Since there are only 2 possibilities, we only need to care about the + // parity. Also, zi and r should have the same parity since the divisor + // is an even number. + const auto y_mul = cache_accessor::compute_mul_parity(two_fc, cache, beta); + + // If z^(f) >= epsilon^(f), we might have a tie when z^(f) == epsilon^(f), + // or equivalently, when y is an integer. + if (y_mul.parity != approx_y_parity) + --ret_value.significand; + else if (y_mul.is_integer & (ret_value.significand % 2 != 0)) + --ret_value.significand; + return ret_value; +} +} // namespace dragonbox +} // namespace detail + +template <> struct formatter { + FMT_CONSTEXPR auto parse(format_parse_context& ctx) + -> format_parse_context::iterator { + return ctx.begin(); + } + + auto format(const detail::bigint& n, format_context& ctx) const + -> format_context::iterator { + auto out = ctx.out(); + bool first = true; + for (auto i = n.bigits_.size(); i > 0; --i) { + auto value = n.bigits_[i - 1u]; + if (first) { + out = fmt::format_to(out, FMT_STRING("{:x}"), value); + first = false; + continue; + } + out = fmt::format_to(out, FMT_STRING("{:08x}"), value); + } + if (n.exp_ > 0) + out = fmt::format_to(out, FMT_STRING("p{}"), + n.exp_ * detail::bigint::bigit_bits); + return out; + } +}; + +FMT_FUNC detail::utf8_to_utf16::utf8_to_utf16(string_view s) { + for_each_codepoint(s, [this](uint32_t cp, string_view) { + if (cp == invalid_code_point) FMT_THROW(std::runtime_error("invalid utf8")); + if (cp <= 0xFFFF) { + buffer_.push_back(static_cast(cp)); + } else { + cp -= 0x10000; + buffer_.push_back(static_cast(0xD800 + (cp >> 10))); + buffer_.push_back(static_cast(0xDC00 + (cp & 0x3FF))); + } + return true; + }); + buffer_.push_back(0); +} + +FMT_FUNC void format_system_error(detail::buffer& out, int error_code, + const char* message) noexcept { + FMT_TRY { + auto ec = std::error_code(error_code, std::generic_category()); + detail::write(appender(out), std::system_error(ec, message).what()); + return; + } + FMT_CATCH(...) {} + format_error_code(out, error_code, message); +} + +FMT_FUNC void report_system_error(int error_code, + const char* message) noexcept { + report_error(format_system_error, error_code, message); +} + +FMT_FUNC auto vformat(string_view fmt, format_args args) -> std::string { + // Don't optimize the "{}" case to keep the binary size small and because it + // can be better optimized in fmt::format anyway. + auto buffer = memory_buffer(); + detail::vformat_to(buffer, fmt, args); + return to_string(buffer); +} + +namespace detail { + +template struct span { + T* data; + size_t size; +}; + +template auto flockfile(F* f) -> decltype(_lock_file(f)) { + _lock_file(f); +} +template auto funlockfile(F* f) -> decltype(_unlock_file(f)) { + _unlock_file(f); +} + +#ifndef getc_unlocked +template auto getc_unlocked(F* f) -> decltype(_fgetc_nolock(f)) { + return _fgetc_nolock(f); +} +#endif + +template +struct has_flockfile : std::false_type {}; + +template +struct has_flockfile()))>> + : std::true_type {}; + +// A FILE wrapper. F is FILE defined as a template parameter to make system API +// detection work. +template class file_base { + public: + F* file_; + + public: + file_base(F* file) : file_(file) {} + operator F*() const { return file_; } + + // Reads a code unit from the stream. + auto get() -> int { + int result = getc_unlocked(file_); + if (result == EOF && ferror(file_) != 0) + FMT_THROW(system_error(errno, FMT_STRING("getc failed"))); + return result; + } + + // Puts the code unit back into the stream buffer. + void unget(char c) { + if (ungetc(c, file_) == EOF) + FMT_THROW(system_error(errno, FMT_STRING("ungetc failed"))); + } + + void flush() { fflush(this->file_); } +}; + +// A FILE wrapper for glibc. +template class glibc_file : public file_base { + private: + enum { + line_buffered = 0x200, // _IO_LINE_BUF + unbuffered = 2 // _IO_UNBUFFERED + }; + + public: + using file_base::file_base; + + auto is_buffered() const -> bool { + return (this->file_->_flags & unbuffered) == 0; + } + + void init_buffer() { + if (this->file_->_IO_write_ptr) return; + // Force buffer initialization by placing and removing a char in a buffer. + putc_unlocked(0, this->file_); + --this->file_->_IO_write_ptr; + } + + // Returns the file's read buffer. + auto get_read_buffer() const -> span { + auto ptr = this->file_->_IO_read_ptr; + return {ptr, to_unsigned(this->file_->_IO_read_end - ptr)}; + } + + // Returns the file's write buffer. + auto get_write_buffer() const -> span { + auto ptr = this->file_->_IO_write_ptr; + return {ptr, to_unsigned(this->file_->_IO_buf_end - ptr)}; + } + + void advance_write_buffer(size_t size) { this->file_->_IO_write_ptr += size; } + + bool needs_flush() const { + if ((this->file_->_flags & line_buffered) == 0) return false; + char* end = this->file_->_IO_write_end; + return memchr(end, '\n', to_unsigned(this->file_->_IO_write_ptr - end)); + } + + void flush() { fflush_unlocked(this->file_); } +}; + +// A FILE wrapper for Apple's libc. +template class apple_file : public file_base { + private: + enum { + line_buffered = 1, // __SNBF + unbuffered = 2 // __SLBF + }; + + public: + using file_base::file_base; + + auto is_buffered() const -> bool { + return (this->file_->_flags & unbuffered) == 0; + } + + void init_buffer() { + if (this->file_->_p) return; + // Force buffer initialization by placing and removing a char in a buffer. + putc_unlocked(0, this->file_); + --this->file_->_p; + ++this->file_->_w; + } + + auto get_read_buffer() const -> span { + return {reinterpret_cast(this->file_->_p), + to_unsigned(this->file_->_r)}; + } + + auto get_write_buffer() const -> span { + return {reinterpret_cast(this->file_->_p), + to_unsigned(this->file_->_bf._base + this->file_->_bf._size - + this->file_->_p)}; + } + + void advance_write_buffer(size_t size) { + this->file_->_p += size; + this->file_->_w -= size; + } + + bool needs_flush() const { + if ((this->file_->_flags & line_buffered) == 0) return false; + return memchr(this->file_->_p + this->file_->_w, '\n', + to_unsigned(-this->file_->_w)); + } +}; + +// A fallback FILE wrapper. +template class fallback_file : public file_base { + private: + char next_; // The next unconsumed character in the buffer. + bool has_next_ = false; + + public: + using file_base::file_base; + + auto is_buffered() const -> bool { return false; } + auto needs_flush() const -> bool { return false; } + void init_buffer() {} + + auto get_read_buffer() const -> span { + return {&next_, has_next_ ? 1u : 0u}; + } + + auto get_write_buffer() const -> span { return {nullptr, 0}; } + + void advance_write_buffer(size_t) {} + + auto get() -> int { + has_next_ = false; + return file_base::get(); + } + + void unget(char c) { + file_base::unget(c); + next_ = c; + has_next_ = true; + } +}; + +#ifndef FMT_USE_FALLBACK_FILE +# define FMT_USE_FALLBACK_FILE 1 +#endif + +template +auto get_file(F* f, int) -> apple_file { + return f; +} +template +inline auto get_file(F* f, int) -> glibc_file { + return f; +} + +inline auto get_file(FILE* f, ...) -> fallback_file { return f; } + +using file_ref = decltype(get_file(static_cast(nullptr), 0)); + +template +class file_print_buffer : public buffer { + public: + explicit file_print_buffer(F*) : buffer(nullptr, size_t()) {} +}; + +template +class file_print_buffer::value>> + : public buffer { + private: + file_ref file_; + + static void grow(buffer& base, size_t) { + auto& self = static_cast(base); + self.file_.advance_write_buffer(self.size()); + if (self.file_.get_write_buffer().size == 0) self.file_.flush(); + auto buf = self.file_.get_write_buffer(); + FMT_ASSERT(buf.size > 0, ""); + self.set(buf.data, buf.size); + self.clear(); + } + + public: + explicit file_print_buffer(F* f) : buffer(grow, size_t()), file_(f) { + flockfile(f); + file_.init_buffer(); + auto buf = file_.get_write_buffer(); + set(buf.data, buf.size); + } + ~file_print_buffer() { + file_.advance_write_buffer(size()); + bool flush = file_.needs_flush(); + F* f = file_; // Make funlockfile depend on the template parameter F + funlockfile(f); // for the system API detection to work. + if (flush) fflush(file_); + } +}; + +#if !defined(_WIN32) || defined(FMT_USE_WRITE_CONSOLE) +FMT_FUNC auto write_console(int, string_view) -> bool { return false; } +#else +using dword = conditional_t; +extern "C" __declspec(dllimport) int __stdcall WriteConsoleW( // + void*, const void*, dword, dword*, void*); + +FMT_FUNC bool write_console(int fd, string_view text) { + auto u16 = utf8_to_utf16(text); + return WriteConsoleW(reinterpret_cast(_get_osfhandle(fd)), u16.c_str(), + static_cast(u16.size()), nullptr, nullptr) != 0; +} +#endif + +#ifdef _WIN32 +// Print assuming legacy (non-Unicode) encoding. +FMT_FUNC void vprint_mojibake(std::FILE* f, string_view fmt, format_args args, + bool newline) { + auto buffer = memory_buffer(); + detail::vformat_to(buffer, fmt, args); + if (newline) buffer.push_back('\n'); + fwrite_fully(buffer.data(), buffer.size(), f); +} +#endif + +FMT_FUNC void print(std::FILE* f, string_view text) { +#if defined(_WIN32) && !defined(FMT_USE_WRITE_CONSOLE) + int fd = _fileno(f); + if (_isatty(fd)) { + std::fflush(f); + if (write_console(fd, text)) return; + } +#endif + fwrite_fully(text.data(), text.size(), f); +} +} // namespace detail + +FMT_FUNC void vprint_buffered(std::FILE* f, string_view fmt, format_args args) { + auto buffer = memory_buffer(); + detail::vformat_to(buffer, fmt, args); + detail::print(f, {buffer.data(), buffer.size()}); +} + +FMT_FUNC void vprint(std::FILE* f, string_view fmt, format_args args) { + if (!detail::file_ref(f).is_buffered() || !detail::has_flockfile<>()) + return vprint_buffered(f, fmt, args); + auto&& buffer = detail::file_print_buffer<>(f); + return detail::vformat_to(buffer, fmt, args); +} + +FMT_FUNC void vprintln(std::FILE* f, string_view fmt, format_args args) { + auto buffer = memory_buffer(); + detail::vformat_to(buffer, fmt, args); + buffer.push_back('\n'); + detail::print(f, {buffer.data(), buffer.size()}); +} + +FMT_FUNC void vprint(string_view fmt, format_args args) { + vprint(stdout, fmt, args); +} + +namespace detail { + +struct singleton { + unsigned char upper; + unsigned char lower_count; +}; + +inline auto is_printable(uint16_t x, const singleton* singletons, + size_t singletons_size, + const unsigned char* singleton_lowers, + const unsigned char* normal, size_t normal_size) + -> bool { + auto upper = x >> 8; + auto lower_start = 0; + for (size_t i = 0; i < singletons_size; ++i) { + auto s = singletons[i]; + auto lower_end = lower_start + s.lower_count; + if (upper < s.upper) break; + if (upper == s.upper) { + for (auto j = lower_start; j < lower_end; ++j) { + if (singleton_lowers[j] == (x & 0xff)) return false; + } + } + lower_start = lower_end; + } + + auto xsigned = static_cast(x); + auto current = true; + for (size_t i = 0; i < normal_size; ++i) { + auto v = static_cast(normal[i]); + auto len = (v & 0x80) != 0 ? (v & 0x7f) << 8 | normal[++i] : v; + xsigned -= len; + if (xsigned < 0) break; + current = !current; + } + return current; +} + +// This code is generated by support/printable.py. +FMT_FUNC auto is_printable(uint32_t cp) -> bool { + static constexpr singleton singletons0[] = { + {0x00, 1}, {0x03, 5}, {0x05, 6}, {0x06, 3}, {0x07, 6}, {0x08, 8}, + {0x09, 17}, {0x0a, 28}, {0x0b, 25}, {0x0c, 20}, {0x0d, 16}, {0x0e, 13}, + {0x0f, 4}, {0x10, 3}, {0x12, 18}, {0x13, 9}, {0x16, 1}, {0x17, 5}, + {0x18, 2}, {0x19, 3}, {0x1a, 7}, {0x1c, 2}, {0x1d, 1}, {0x1f, 22}, + {0x20, 3}, {0x2b, 3}, {0x2c, 2}, {0x2d, 11}, {0x2e, 1}, {0x30, 3}, + {0x31, 2}, {0x32, 1}, {0xa7, 2}, {0xa9, 2}, {0xaa, 4}, {0xab, 8}, + {0xfa, 2}, {0xfb, 5}, {0xfd, 4}, {0xfe, 3}, {0xff, 9}, + }; + static constexpr unsigned char singletons0_lower[] = { + 0xad, 0x78, 0x79, 0x8b, 0x8d, 0xa2, 0x30, 0x57, 0x58, 0x8b, 0x8c, 0x90, + 0x1c, 0x1d, 0xdd, 0x0e, 0x0f, 0x4b, 0x4c, 0xfb, 0xfc, 0x2e, 0x2f, 0x3f, + 0x5c, 0x5d, 0x5f, 0xb5, 0xe2, 0x84, 0x8d, 0x8e, 0x91, 0x92, 0xa9, 0xb1, + 0xba, 0xbb, 0xc5, 0xc6, 0xc9, 0xca, 0xde, 0xe4, 0xe5, 0xff, 0x00, 0x04, + 0x11, 0x12, 0x29, 0x31, 0x34, 0x37, 0x3a, 0x3b, 0x3d, 0x49, 0x4a, 0x5d, + 0x84, 0x8e, 0x92, 0xa9, 0xb1, 0xb4, 0xba, 0xbb, 0xc6, 0xca, 0xce, 0xcf, + 0xe4, 0xe5, 0x00, 0x04, 0x0d, 0x0e, 0x11, 0x12, 0x29, 0x31, 0x34, 0x3a, + 0x3b, 0x45, 0x46, 0x49, 0x4a, 0x5e, 0x64, 0x65, 0x84, 0x91, 0x9b, 0x9d, + 0xc9, 0xce, 0xcf, 0x0d, 0x11, 0x29, 0x45, 0x49, 0x57, 0x64, 0x65, 0x8d, + 0x91, 0xa9, 0xb4, 0xba, 0xbb, 0xc5, 0xc9, 0xdf, 0xe4, 0xe5, 0xf0, 0x0d, + 0x11, 0x45, 0x49, 0x64, 0x65, 0x80, 0x84, 0xb2, 0xbc, 0xbe, 0xbf, 0xd5, + 0xd7, 0xf0, 0xf1, 0x83, 0x85, 0x8b, 0xa4, 0xa6, 0xbe, 0xbf, 0xc5, 0xc7, + 0xce, 0xcf, 0xda, 0xdb, 0x48, 0x98, 0xbd, 0xcd, 0xc6, 0xce, 0xcf, 0x49, + 0x4e, 0x4f, 0x57, 0x59, 0x5e, 0x5f, 0x89, 0x8e, 0x8f, 0xb1, 0xb6, 0xb7, + 0xbf, 0xc1, 0xc6, 0xc7, 0xd7, 0x11, 0x16, 0x17, 0x5b, 0x5c, 0xf6, 0xf7, + 0xfe, 0xff, 0x80, 0x0d, 0x6d, 0x71, 0xde, 0xdf, 0x0e, 0x0f, 0x1f, 0x6e, + 0x6f, 0x1c, 0x1d, 0x5f, 0x7d, 0x7e, 0xae, 0xaf, 0xbb, 0xbc, 0xfa, 0x16, + 0x17, 0x1e, 0x1f, 0x46, 0x47, 0x4e, 0x4f, 0x58, 0x5a, 0x5c, 0x5e, 0x7e, + 0x7f, 0xb5, 0xc5, 0xd4, 0xd5, 0xdc, 0xf0, 0xf1, 0xf5, 0x72, 0x73, 0x8f, + 0x74, 0x75, 0x96, 0x2f, 0x5f, 0x26, 0x2e, 0x2f, 0xa7, 0xaf, 0xb7, 0xbf, + 0xc7, 0xcf, 0xd7, 0xdf, 0x9a, 0x40, 0x97, 0x98, 0x30, 0x8f, 0x1f, 0xc0, + 0xc1, 0xce, 0xff, 0x4e, 0x4f, 0x5a, 0x5b, 0x07, 0x08, 0x0f, 0x10, 0x27, + 0x2f, 0xee, 0xef, 0x6e, 0x6f, 0x37, 0x3d, 0x3f, 0x42, 0x45, 0x90, 0x91, + 0xfe, 0xff, 0x53, 0x67, 0x75, 0xc8, 0xc9, 0xd0, 0xd1, 0xd8, 0xd9, 0xe7, + 0xfe, 0xff, + }; + static constexpr singleton singletons1[] = { + {0x00, 6}, {0x01, 1}, {0x03, 1}, {0x04, 2}, {0x08, 8}, {0x09, 2}, + {0x0a, 5}, {0x0b, 2}, {0x0e, 4}, {0x10, 1}, {0x11, 2}, {0x12, 5}, + {0x13, 17}, {0x14, 1}, {0x15, 2}, {0x17, 2}, {0x19, 13}, {0x1c, 5}, + {0x1d, 8}, {0x24, 1}, {0x6a, 3}, {0x6b, 2}, {0xbc, 2}, {0xd1, 2}, + {0xd4, 12}, {0xd5, 9}, {0xd6, 2}, {0xd7, 2}, {0xda, 1}, {0xe0, 5}, + {0xe1, 2}, {0xe8, 2}, {0xee, 32}, {0xf0, 4}, {0xf8, 2}, {0xf9, 2}, + {0xfa, 2}, {0xfb, 1}, + }; + static constexpr unsigned char singletons1_lower[] = { + 0x0c, 0x27, 0x3b, 0x3e, 0x4e, 0x4f, 0x8f, 0x9e, 0x9e, 0x9f, 0x06, 0x07, + 0x09, 0x36, 0x3d, 0x3e, 0x56, 0xf3, 0xd0, 0xd1, 0x04, 0x14, 0x18, 0x36, + 0x37, 0x56, 0x57, 0x7f, 0xaa, 0xae, 0xaf, 0xbd, 0x35, 0xe0, 0x12, 0x87, + 0x89, 0x8e, 0x9e, 0x04, 0x0d, 0x0e, 0x11, 0x12, 0x29, 0x31, 0x34, 0x3a, + 0x45, 0x46, 0x49, 0x4a, 0x4e, 0x4f, 0x64, 0x65, 0x5c, 0xb6, 0xb7, 0x1b, + 0x1c, 0x07, 0x08, 0x0a, 0x0b, 0x14, 0x17, 0x36, 0x39, 0x3a, 0xa8, 0xa9, + 0xd8, 0xd9, 0x09, 0x37, 0x90, 0x91, 0xa8, 0x07, 0x0a, 0x3b, 0x3e, 0x66, + 0x69, 0x8f, 0x92, 0x6f, 0x5f, 0xee, 0xef, 0x5a, 0x62, 0x9a, 0x9b, 0x27, + 0x28, 0x55, 0x9d, 0xa0, 0xa1, 0xa3, 0xa4, 0xa7, 0xa8, 0xad, 0xba, 0xbc, + 0xc4, 0x06, 0x0b, 0x0c, 0x15, 0x1d, 0x3a, 0x3f, 0x45, 0x51, 0xa6, 0xa7, + 0xcc, 0xcd, 0xa0, 0x07, 0x19, 0x1a, 0x22, 0x25, 0x3e, 0x3f, 0xc5, 0xc6, + 0x04, 0x20, 0x23, 0x25, 0x26, 0x28, 0x33, 0x38, 0x3a, 0x48, 0x4a, 0x4c, + 0x50, 0x53, 0x55, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60, 0x63, 0x65, 0x66, + 0x6b, 0x73, 0x78, 0x7d, 0x7f, 0x8a, 0xa4, 0xaa, 0xaf, 0xb0, 0xc0, 0xd0, + 0xae, 0xaf, 0x79, 0xcc, 0x6e, 0x6f, 0x93, + }; + static constexpr unsigned char normal0[] = { + 0x00, 0x20, 0x5f, 0x22, 0x82, 0xdf, 0x04, 0x82, 0x44, 0x08, 0x1b, 0x04, + 0x06, 0x11, 0x81, 0xac, 0x0e, 0x80, 0xab, 0x35, 0x28, 0x0b, 0x80, 0xe0, + 0x03, 0x19, 0x08, 0x01, 0x04, 0x2f, 0x04, 0x34, 0x04, 0x07, 0x03, 0x01, + 0x07, 0x06, 0x07, 0x11, 0x0a, 0x50, 0x0f, 0x12, 0x07, 0x55, 0x07, 0x03, + 0x04, 0x1c, 0x0a, 0x09, 0x03, 0x08, 0x03, 0x07, 0x03, 0x02, 0x03, 0x03, + 0x03, 0x0c, 0x04, 0x05, 0x03, 0x0b, 0x06, 0x01, 0x0e, 0x15, 0x05, 0x3a, + 0x03, 0x11, 0x07, 0x06, 0x05, 0x10, 0x07, 0x57, 0x07, 0x02, 0x07, 0x15, + 0x0d, 0x50, 0x04, 0x43, 0x03, 0x2d, 0x03, 0x01, 0x04, 0x11, 0x06, 0x0f, + 0x0c, 0x3a, 0x04, 0x1d, 0x25, 0x5f, 0x20, 0x6d, 0x04, 0x6a, 0x25, 0x80, + 0xc8, 0x05, 0x82, 0xb0, 0x03, 0x1a, 0x06, 0x82, 0xfd, 0x03, 0x59, 0x07, + 0x15, 0x0b, 0x17, 0x09, 0x14, 0x0c, 0x14, 0x0c, 0x6a, 0x06, 0x0a, 0x06, + 0x1a, 0x06, 0x59, 0x07, 0x2b, 0x05, 0x46, 0x0a, 0x2c, 0x04, 0x0c, 0x04, + 0x01, 0x03, 0x31, 0x0b, 0x2c, 0x04, 0x1a, 0x06, 0x0b, 0x03, 0x80, 0xac, + 0x06, 0x0a, 0x06, 0x21, 0x3f, 0x4c, 0x04, 0x2d, 0x03, 0x74, 0x08, 0x3c, + 0x03, 0x0f, 0x03, 0x3c, 0x07, 0x38, 0x08, 0x2b, 0x05, 0x82, 0xff, 0x11, + 0x18, 0x08, 0x2f, 0x11, 0x2d, 0x03, 0x20, 0x10, 0x21, 0x0f, 0x80, 0x8c, + 0x04, 0x82, 0x97, 0x19, 0x0b, 0x15, 0x88, 0x94, 0x05, 0x2f, 0x05, 0x3b, + 0x07, 0x02, 0x0e, 0x18, 0x09, 0x80, 0xb3, 0x2d, 0x74, 0x0c, 0x80, 0xd6, + 0x1a, 0x0c, 0x05, 0x80, 0xff, 0x05, 0x80, 0xdf, 0x0c, 0xee, 0x0d, 0x03, + 0x84, 0x8d, 0x03, 0x37, 0x09, 0x81, 0x5c, 0x14, 0x80, 0xb8, 0x08, 0x80, + 0xcb, 0x2a, 0x38, 0x03, 0x0a, 0x06, 0x38, 0x08, 0x46, 0x08, 0x0c, 0x06, + 0x74, 0x0b, 0x1e, 0x03, 0x5a, 0x04, 0x59, 0x09, 0x80, 0x83, 0x18, 0x1c, + 0x0a, 0x16, 0x09, 0x4c, 0x04, 0x80, 0x8a, 0x06, 0xab, 0xa4, 0x0c, 0x17, + 0x04, 0x31, 0xa1, 0x04, 0x81, 0xda, 0x26, 0x07, 0x0c, 0x05, 0x05, 0x80, + 0xa5, 0x11, 0x81, 0x6d, 0x10, 0x78, 0x28, 0x2a, 0x06, 0x4c, 0x04, 0x80, + 0x8d, 0x04, 0x80, 0xbe, 0x03, 0x1b, 0x03, 0x0f, 0x0d, + }; + static constexpr unsigned char normal1[] = { + 0x5e, 0x22, 0x7b, 0x05, 0x03, 0x04, 0x2d, 0x03, 0x66, 0x03, 0x01, 0x2f, + 0x2e, 0x80, 0x82, 0x1d, 0x03, 0x31, 0x0f, 0x1c, 0x04, 0x24, 0x09, 0x1e, + 0x05, 0x2b, 0x05, 0x44, 0x04, 0x0e, 0x2a, 0x80, 0xaa, 0x06, 0x24, 0x04, + 0x24, 0x04, 0x28, 0x08, 0x34, 0x0b, 0x01, 0x80, 0x90, 0x81, 0x37, 0x09, + 0x16, 0x0a, 0x08, 0x80, 0x98, 0x39, 0x03, 0x63, 0x08, 0x09, 0x30, 0x16, + 0x05, 0x21, 0x03, 0x1b, 0x05, 0x01, 0x40, 0x38, 0x04, 0x4b, 0x05, 0x2f, + 0x04, 0x0a, 0x07, 0x09, 0x07, 0x40, 0x20, 0x27, 0x04, 0x0c, 0x09, 0x36, + 0x03, 0x3a, 0x05, 0x1a, 0x07, 0x04, 0x0c, 0x07, 0x50, 0x49, 0x37, 0x33, + 0x0d, 0x33, 0x07, 0x2e, 0x08, 0x0a, 0x81, 0x26, 0x52, 0x4e, 0x28, 0x08, + 0x2a, 0x56, 0x1c, 0x14, 0x17, 0x09, 0x4e, 0x04, 0x1e, 0x0f, 0x43, 0x0e, + 0x19, 0x07, 0x0a, 0x06, 0x48, 0x08, 0x27, 0x09, 0x75, 0x0b, 0x3f, 0x41, + 0x2a, 0x06, 0x3b, 0x05, 0x0a, 0x06, 0x51, 0x06, 0x01, 0x05, 0x10, 0x03, + 0x05, 0x80, 0x8b, 0x62, 0x1e, 0x48, 0x08, 0x0a, 0x80, 0xa6, 0x5e, 0x22, + 0x45, 0x0b, 0x0a, 0x06, 0x0d, 0x13, 0x39, 0x07, 0x0a, 0x36, 0x2c, 0x04, + 0x10, 0x80, 0xc0, 0x3c, 0x64, 0x53, 0x0c, 0x48, 0x09, 0x0a, 0x46, 0x45, + 0x1b, 0x48, 0x08, 0x53, 0x1d, 0x39, 0x81, 0x07, 0x46, 0x0a, 0x1d, 0x03, + 0x47, 0x49, 0x37, 0x03, 0x0e, 0x08, 0x0a, 0x06, 0x39, 0x07, 0x0a, 0x81, + 0x36, 0x19, 0x80, 0xb7, 0x01, 0x0f, 0x32, 0x0d, 0x83, 0x9b, 0x66, 0x75, + 0x0b, 0x80, 0xc4, 0x8a, 0xbc, 0x84, 0x2f, 0x8f, 0xd1, 0x82, 0x47, 0xa1, + 0xb9, 0x82, 0x39, 0x07, 0x2a, 0x04, 0x02, 0x60, 0x26, 0x0a, 0x46, 0x0a, + 0x28, 0x05, 0x13, 0x82, 0xb0, 0x5b, 0x65, 0x4b, 0x04, 0x39, 0x07, 0x11, + 0x40, 0x05, 0x0b, 0x02, 0x0e, 0x97, 0xf8, 0x08, 0x84, 0xd6, 0x2a, 0x09, + 0xa2, 0xf7, 0x81, 0x1f, 0x31, 0x03, 0x11, 0x04, 0x08, 0x81, 0x8c, 0x89, + 0x04, 0x6b, 0x05, 0x0d, 0x03, 0x09, 0x07, 0x10, 0x93, 0x60, 0x80, 0xf6, + 0x0a, 0x73, 0x08, 0x6e, 0x17, 0x46, 0x80, 0x9a, 0x14, 0x0c, 0x57, 0x09, + 0x19, 0x80, 0x87, 0x81, 0x47, 0x03, 0x85, 0x42, 0x0f, 0x15, 0x85, 0x50, + 0x2b, 0x80, 0xd5, 0x2d, 0x03, 0x1a, 0x04, 0x02, 0x81, 0x70, 0x3a, 0x05, + 0x01, 0x85, 0x00, 0x80, 0xd7, 0x29, 0x4c, 0x04, 0x0a, 0x04, 0x02, 0x83, + 0x11, 0x44, 0x4c, 0x3d, 0x80, 0xc2, 0x3c, 0x06, 0x01, 0x04, 0x55, 0x05, + 0x1b, 0x34, 0x02, 0x81, 0x0e, 0x2c, 0x04, 0x64, 0x0c, 0x56, 0x0a, 0x80, + 0xae, 0x38, 0x1d, 0x0d, 0x2c, 0x04, 0x09, 0x07, 0x02, 0x0e, 0x06, 0x80, + 0x9a, 0x83, 0xd8, 0x08, 0x0d, 0x03, 0x0d, 0x03, 0x74, 0x0c, 0x59, 0x07, + 0x0c, 0x14, 0x0c, 0x04, 0x38, 0x08, 0x0a, 0x06, 0x28, 0x08, 0x22, 0x4e, + 0x81, 0x54, 0x0c, 0x15, 0x03, 0x03, 0x05, 0x07, 0x09, 0x19, 0x07, 0x07, + 0x09, 0x03, 0x0d, 0x07, 0x29, 0x80, 0xcb, 0x25, 0x0a, 0x84, 0x06, + }; + auto lower = static_cast(cp); + if (cp < 0x10000) { + return is_printable(lower, singletons0, + sizeof(singletons0) / sizeof(*singletons0), + singletons0_lower, normal0, sizeof(normal0)); + } + if (cp < 0x20000) { + return is_printable(lower, singletons1, + sizeof(singletons1) / sizeof(*singletons1), + singletons1_lower, normal1, sizeof(normal1)); + } + if (0x2a6de <= cp && cp < 0x2a700) return false; + if (0x2b735 <= cp && cp < 0x2b740) return false; + if (0x2b81e <= cp && cp < 0x2b820) return false; + if (0x2cea2 <= cp && cp < 0x2ceb0) return false; + if (0x2ebe1 <= cp && cp < 0x2f800) return false; + if (0x2fa1e <= cp && cp < 0x30000) return false; + if (0x3134b <= cp && cp < 0xe0100) return false; + if (0xe01f0 <= cp && cp < 0x110000) return false; + return cp < 0x110000; +} + +} // namespace detail + +FMT_END_NAMESPACE + +#endif // FMT_FORMAT_INL_H_ diff --git a/Submodules/fmt/include/fmt/format.h b/Submodules/fmt/include/fmt/format.h new file mode 100644 index 0000000..67f0ab7 --- /dev/null +++ b/Submodules/fmt/include/fmt/format.h @@ -0,0 +1,4427 @@ +/* + Formatting library for C++ + + Copyright (c) 2012 - present, Victor Zverovich + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + --- Optional exception to the license --- + + As an exception, if, as a result of your compiling your source code, portions + of this Software are embedded into a machine-executable object form of such + source code, you may redistribute such embedded portions in such object form + without including the above copyright and permission notices. + */ + +#ifndef FMT_FORMAT_H_ +#define FMT_FORMAT_H_ + +#ifndef _LIBCPP_REMOVE_TRANSITIVE_INCLUDES +# define _LIBCPP_REMOVE_TRANSITIVE_INCLUDES +# define FMT_REMOVE_TRANSITIVE_INCLUDES +#endif + +#include "base.h" + +#ifndef FMT_MODULE +# include // std::signbit +# include // uint32_t +# include // std::memcpy +# include // std::initializer_list +# include // std::numeric_limits +# if defined(__GLIBCXX__) && !defined(_GLIBCXX_USE_DUAL_ABI) +// Workaround for pre gcc 5 libstdc++. +# include // std::allocator_traits +# endif +# include // std::runtime_error +# include // std::string +# include // std::system_error + +// Checking FMT_CPLUSPLUS for warning suppression in MSVC. +# if FMT_HAS_INCLUDE() && FMT_CPLUSPLUS > 201703L +# include // std::bit_cast +# endif + +// libc++ supports string_view in pre-c++17. +# if FMT_HAS_INCLUDE() && \ + (FMT_CPLUSPLUS >= 201703L || defined(_LIBCPP_VERSION)) +# include +# define FMT_USE_STRING_VIEW +# endif +#endif // FMT_MODULE + +#if defined __cpp_inline_variables && __cpp_inline_variables >= 201606L +# define FMT_INLINE_VARIABLE inline +#else +# define FMT_INLINE_VARIABLE +#endif + +#ifndef FMT_NO_UNIQUE_ADDRESS +# if FMT_CPLUSPLUS >= 202002L +# if FMT_HAS_CPP_ATTRIBUTE(no_unique_address) +# define FMT_NO_UNIQUE_ADDRESS [[no_unique_address]] +// VS2019 v16.10 and later except clang-cl (https://reviews.llvm.org/D110485). +# elif (FMT_MSC_VERSION >= 1929) && !FMT_CLANG_VERSION +# define FMT_NO_UNIQUE_ADDRESS [[msvc::no_unique_address]] +# endif +# endif +#endif +#ifndef FMT_NO_UNIQUE_ADDRESS +# define FMT_NO_UNIQUE_ADDRESS +#endif + +// Visibility when compiled as a shared library/object. +#if defined(FMT_LIB_EXPORT) || defined(FMT_SHARED) +# define FMT_SO_VISIBILITY(value) FMT_VISIBILITY(value) +#else +# define FMT_SO_VISIBILITY(value) +#endif + +#ifdef __has_builtin +# define FMT_HAS_BUILTIN(x) __has_builtin(x) +#else +# define FMT_HAS_BUILTIN(x) 0 +#endif + +#if FMT_GCC_VERSION || FMT_CLANG_VERSION +# define FMT_NOINLINE __attribute__((noinline)) +#else +# define FMT_NOINLINE +#endif + +namespace std { +template <> struct iterator_traits { + using iterator_category = output_iterator_tag; + using value_type = char; +}; +} // namespace std + +#ifndef FMT_THROW +# if FMT_EXCEPTIONS +# if FMT_MSC_VERSION || defined(__NVCC__) +FMT_BEGIN_NAMESPACE +namespace detail { +template inline void do_throw(const Exception& x) { + // Silence unreachable code warnings in MSVC and NVCC because these + // are nearly impossible to fix in a generic code. + volatile bool b = true; + if (b) throw x; +} +} // namespace detail +FMT_END_NAMESPACE +# define FMT_THROW(x) detail::do_throw(x) +# else +# define FMT_THROW(x) throw x +# endif +# else +# define FMT_THROW(x) \ + ::fmt::detail::assert_fail(__FILE__, __LINE__, (x).what()) +# endif +#endif + +#ifndef FMT_MAYBE_UNUSED +# if FMT_HAS_CPP17_ATTRIBUTE(maybe_unused) +# define FMT_MAYBE_UNUSED [[maybe_unused]] +# else +# define FMT_MAYBE_UNUSED +# endif +#endif + +#ifndef FMT_USE_USER_DEFINED_LITERALS +// EDG based compilers (Intel, NVIDIA, Elbrus, etc), GCC and MSVC support UDLs. +// +// GCC before 4.9 requires a space in `operator"" _a` which is invalid in later +// compiler versions. +# if (FMT_HAS_FEATURE(cxx_user_literals) || FMT_GCC_VERSION >= 409 || \ + FMT_MSC_VERSION >= 1900) && \ + (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= /* UDL feature */ 480) +# define FMT_USE_USER_DEFINED_LITERALS 1 +# else +# define FMT_USE_USER_DEFINED_LITERALS 0 +# endif +#endif + +// Defining FMT_REDUCE_INT_INSTANTIATIONS to 1, will reduce the number of +// integer formatter template instantiations to just one by only using the +// largest integer type. This results in a reduction in binary size but will +// cause a decrease in integer formatting performance. +#if !defined(FMT_REDUCE_INT_INSTANTIATIONS) +# define FMT_REDUCE_INT_INSTANTIATIONS 0 +#endif + +// __builtin_clz is broken in clang with Microsoft CodeGen: +// https://github.com/fmtlib/fmt/issues/519. +#if !FMT_MSC_VERSION +# if FMT_HAS_BUILTIN(__builtin_clz) || FMT_GCC_VERSION || FMT_ICC_VERSION +# define FMT_BUILTIN_CLZ(n) __builtin_clz(n) +# endif +# if FMT_HAS_BUILTIN(__builtin_clzll) || FMT_GCC_VERSION || FMT_ICC_VERSION +# define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n) +# endif +#endif + +// __builtin_ctz is broken in Intel Compiler Classic on Windows: +// https://github.com/fmtlib/fmt/issues/2510. +#ifndef __ICL +# if FMT_HAS_BUILTIN(__builtin_ctz) || FMT_GCC_VERSION || FMT_ICC_VERSION || \ + defined(__NVCOMPILER) +# define FMT_BUILTIN_CTZ(n) __builtin_ctz(n) +# endif +# if FMT_HAS_BUILTIN(__builtin_ctzll) || FMT_GCC_VERSION || \ + FMT_ICC_VERSION || defined(__NVCOMPILER) +# define FMT_BUILTIN_CTZLL(n) __builtin_ctzll(n) +# endif +#endif + +#if FMT_MSC_VERSION +# include // _BitScanReverse[64], _BitScanForward[64], _umul128 +#endif + +// Some compilers masquerade as both MSVC and GCC-likes or otherwise support +// __builtin_clz and __builtin_clzll, so only define FMT_BUILTIN_CLZ using the +// MSVC intrinsics if the clz and clzll builtins are not available. +#if FMT_MSC_VERSION && !defined(FMT_BUILTIN_CLZLL) && \ + !defined(FMT_BUILTIN_CTZLL) +FMT_BEGIN_NAMESPACE +namespace detail { +// Avoid Clang with Microsoft CodeGen's -Wunknown-pragmas warning. +# if !defined(__clang__) +# pragma intrinsic(_BitScanForward) +# pragma intrinsic(_BitScanReverse) +# if defined(_WIN64) +# pragma intrinsic(_BitScanForward64) +# pragma intrinsic(_BitScanReverse64) +# endif +# endif + +inline auto clz(uint32_t x) -> int { + unsigned long r = 0; + _BitScanReverse(&r, x); + FMT_ASSERT(x != 0, ""); + // Static analysis complains about using uninitialized data + // "r", but the only way that can happen is if "x" is 0, + // which the callers guarantee to not happen. + FMT_MSC_WARNING(suppress : 6102) + return 31 ^ static_cast(r); +} +# define FMT_BUILTIN_CLZ(n) detail::clz(n) + +inline auto clzll(uint64_t x) -> int { + unsigned long r = 0; +# ifdef _WIN64 + _BitScanReverse64(&r, x); +# else + // Scan the high 32 bits. + if (_BitScanReverse(&r, static_cast(x >> 32))) + return 63 ^ static_cast(r + 32); + // Scan the low 32 bits. + _BitScanReverse(&r, static_cast(x)); +# endif + FMT_ASSERT(x != 0, ""); + FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning. + return 63 ^ static_cast(r); +} +# define FMT_BUILTIN_CLZLL(n) detail::clzll(n) + +inline auto ctz(uint32_t x) -> int { + unsigned long r = 0; + _BitScanForward(&r, x); + FMT_ASSERT(x != 0, ""); + FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning. + return static_cast(r); +} +# define FMT_BUILTIN_CTZ(n) detail::ctz(n) + +inline auto ctzll(uint64_t x) -> int { + unsigned long r = 0; + FMT_ASSERT(x != 0, ""); + FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning. +# ifdef _WIN64 + _BitScanForward64(&r, x); +# else + // Scan the low 32 bits. + if (_BitScanForward(&r, static_cast(x))) return static_cast(r); + // Scan the high 32 bits. + _BitScanForward(&r, static_cast(x >> 32)); + r += 32; +# endif + return static_cast(r); +} +# define FMT_BUILTIN_CTZLL(n) detail::ctzll(n) +} // namespace detail +FMT_END_NAMESPACE +#endif + +FMT_BEGIN_NAMESPACE + +template +struct is_contiguous> + : std::true_type {}; + +namespace detail { + +FMT_CONSTEXPR inline void abort_fuzzing_if(bool condition) { + ignore_unused(condition); +#ifdef FMT_FUZZ + if (condition) throw std::runtime_error("fuzzing limit reached"); +#endif +} + +#if defined(FMT_USE_STRING_VIEW) +template using std_string_view = std::basic_string_view; +#else +template struct std_string_view {}; +#endif + +// Implementation of std::bit_cast for pre-C++20. +template +FMT_CONSTEXPR20 auto bit_cast(const From& from) -> To { +#ifdef __cpp_lib_bit_cast + if (is_constant_evaluated()) return std::bit_cast(from); +#endif + auto to = To(); + // The cast suppresses a bogus -Wclass-memaccess on GCC. + std::memcpy(static_cast(&to), &from, sizeof(to)); + return to; +} + +inline auto is_big_endian() -> bool { +#ifdef _WIN32 + return false; +#elif defined(__BIG_ENDIAN__) + return true; +#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) + return __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__; +#else + struct bytes { + char data[sizeof(int)]; + }; + return bit_cast(1).data[0] == 0; +#endif +} + +class uint128_fallback { + private: + uint64_t lo_, hi_; + + public: + constexpr uint128_fallback(uint64_t hi, uint64_t lo) : lo_(lo), hi_(hi) {} + constexpr uint128_fallback(uint64_t value = 0) : lo_(value), hi_(0) {} + + constexpr auto high() const noexcept -> uint64_t { return hi_; } + constexpr auto low() const noexcept -> uint64_t { return lo_; } + + template ::value)> + constexpr explicit operator T() const { + return static_cast(lo_); + } + + friend constexpr auto operator==(const uint128_fallback& lhs, + const uint128_fallback& rhs) -> bool { + return lhs.hi_ == rhs.hi_ && lhs.lo_ == rhs.lo_; + } + friend constexpr auto operator!=(const uint128_fallback& lhs, + const uint128_fallback& rhs) -> bool { + return !(lhs == rhs); + } + friend constexpr auto operator>(const uint128_fallback& lhs, + const uint128_fallback& rhs) -> bool { + return lhs.hi_ != rhs.hi_ ? lhs.hi_ > rhs.hi_ : lhs.lo_ > rhs.lo_; + } + friend constexpr auto operator|(const uint128_fallback& lhs, + const uint128_fallback& rhs) + -> uint128_fallback { + return {lhs.hi_ | rhs.hi_, lhs.lo_ | rhs.lo_}; + } + friend constexpr auto operator&(const uint128_fallback& lhs, + const uint128_fallback& rhs) + -> uint128_fallback { + return {lhs.hi_ & rhs.hi_, lhs.lo_ & rhs.lo_}; + } + friend constexpr auto operator~(const uint128_fallback& n) + -> uint128_fallback { + return {~n.hi_, ~n.lo_}; + } + friend auto operator+(const uint128_fallback& lhs, + const uint128_fallback& rhs) -> uint128_fallback { + auto result = uint128_fallback(lhs); + result += rhs; + return result; + } + friend auto operator*(const uint128_fallback& lhs, uint32_t rhs) + -> uint128_fallback { + FMT_ASSERT(lhs.hi_ == 0, ""); + uint64_t hi = (lhs.lo_ >> 32) * rhs; + uint64_t lo = (lhs.lo_ & ~uint32_t()) * rhs; + uint64_t new_lo = (hi << 32) + lo; + return {(hi >> 32) + (new_lo < lo ? 1 : 0), new_lo}; + } + friend auto operator-(const uint128_fallback& lhs, uint64_t rhs) + -> uint128_fallback { + return {lhs.hi_ - (lhs.lo_ < rhs ? 1 : 0), lhs.lo_ - rhs}; + } + FMT_CONSTEXPR auto operator>>(int shift) const -> uint128_fallback { + if (shift == 64) return {0, hi_}; + if (shift > 64) return uint128_fallback(0, hi_) >> (shift - 64); + return {hi_ >> shift, (hi_ << (64 - shift)) | (lo_ >> shift)}; + } + FMT_CONSTEXPR auto operator<<(int shift) const -> uint128_fallback { + if (shift == 64) return {lo_, 0}; + if (shift > 64) return uint128_fallback(lo_, 0) << (shift - 64); + return {hi_ << shift | (lo_ >> (64 - shift)), (lo_ << shift)}; + } + FMT_CONSTEXPR auto operator>>=(int shift) -> uint128_fallback& { + return *this = *this >> shift; + } + FMT_CONSTEXPR void operator+=(uint128_fallback n) { + uint64_t new_lo = lo_ + n.lo_; + uint64_t new_hi = hi_ + n.hi_ + (new_lo < lo_ ? 1 : 0); + FMT_ASSERT(new_hi >= hi_, ""); + lo_ = new_lo; + hi_ = new_hi; + } + FMT_CONSTEXPR void operator&=(uint128_fallback n) { + lo_ &= n.lo_; + hi_ &= n.hi_; + } + + FMT_CONSTEXPR20 auto operator+=(uint64_t n) noexcept -> uint128_fallback& { + if (is_constant_evaluated()) { + lo_ += n; + hi_ += (lo_ < n ? 1 : 0); + return *this; + } +#if FMT_HAS_BUILTIN(__builtin_addcll) && !defined(__ibmxl__) + unsigned long long carry; + lo_ = __builtin_addcll(lo_, n, 0, &carry); + hi_ += carry; +#elif FMT_HAS_BUILTIN(__builtin_ia32_addcarryx_u64) && !defined(__ibmxl__) + unsigned long long result; + auto carry = __builtin_ia32_addcarryx_u64(0, lo_, n, &result); + lo_ = result; + hi_ += carry; +#elif defined(_MSC_VER) && defined(_M_X64) + auto carry = _addcarry_u64(0, lo_, n, &lo_); + _addcarry_u64(carry, hi_, 0, &hi_); +#else + lo_ += n; + hi_ += (lo_ < n ? 1 : 0); +#endif + return *this; + } +}; + +using uint128_t = conditional_t; + +#ifdef UINTPTR_MAX +using uintptr_t = ::uintptr_t; +#else +using uintptr_t = uint128_t; +#endif + +// Returns the largest possible value for type T. Same as +// std::numeric_limits::max() but shorter and not affected by the max macro. +template constexpr auto max_value() -> T { + return (std::numeric_limits::max)(); +} +template constexpr auto num_bits() -> int { + return std::numeric_limits::digits; +} +// std::numeric_limits::digits may return 0 for 128-bit ints. +template <> constexpr auto num_bits() -> int { return 128; } +template <> constexpr auto num_bits() -> int { return 128; } +template <> constexpr auto num_bits() -> int { return 128; } + +// A heterogeneous bit_cast used for converting 96-bit long double to uint128_t +// and 128-bit pointers to uint128_fallback. +template sizeof(From))> +inline auto bit_cast(const From& from) -> To { + constexpr auto size = static_cast(sizeof(From) / sizeof(unsigned)); + struct data_t { + unsigned value[static_cast(size)]; + } data = bit_cast(from); + auto result = To(); + if (const_check(is_big_endian())) { + for (int i = 0; i < size; ++i) + result = (result << num_bits()) | data.value[i]; + } else { + for (int i = size - 1; i >= 0; --i) + result = (result << num_bits()) | data.value[i]; + } + return result; +} + +template +FMT_CONSTEXPR20 inline auto countl_zero_fallback(UInt n) -> int { + int lz = 0; + constexpr UInt msb_mask = static_cast(1) << (num_bits() - 1); + for (; (n & msb_mask) == 0; n <<= 1) lz++; + return lz; +} + +FMT_CONSTEXPR20 inline auto countl_zero(uint32_t n) -> int { +#ifdef FMT_BUILTIN_CLZ + if (!is_constant_evaluated()) return FMT_BUILTIN_CLZ(n); +#endif + return countl_zero_fallback(n); +} + +FMT_CONSTEXPR20 inline auto countl_zero(uint64_t n) -> int { +#ifdef FMT_BUILTIN_CLZLL + if (!is_constant_evaluated()) return FMT_BUILTIN_CLZLL(n); +#endif + return countl_zero_fallback(n); +} + +FMT_INLINE void assume(bool condition) { + (void)condition; +#if FMT_HAS_BUILTIN(__builtin_assume) && !FMT_ICC_VERSION + __builtin_assume(condition); +#elif FMT_GCC_VERSION + if (!condition) __builtin_unreachable(); +#endif +} + +// An approximation of iterator_t for pre-C++20 systems. +template +using iterator_t = decltype(std::begin(std::declval())); +template using sentinel_t = decltype(std::end(std::declval())); + +// A workaround for std::string not having mutable data() until C++17. +template +inline auto get_data(std::basic_string& s) -> Char* { + return &s[0]; +} +template +inline auto get_data(Container& c) -> typename Container::value_type* { + return c.data(); +} + +// Attempts to reserve space for n extra characters in the output range. +// Returns a pointer to the reserved range or a reference to it. +template ::value&& + is_contiguous::value)> +#if FMT_CLANG_VERSION >= 307 && !FMT_ICC_VERSION +__attribute__((no_sanitize("undefined"))) +#endif +inline auto +reserve(OutputIt it, size_t n) -> typename OutputIt::value_type* { + auto& c = get_container(it); + size_t size = c.size(); + c.resize(size + n); + return get_data(c) + size; +} + +template +inline auto reserve(basic_appender it, size_t n) -> basic_appender { + buffer& buf = get_container(it); + buf.try_reserve(buf.size() + n); + return it; +} + +template +constexpr auto reserve(Iterator& it, size_t) -> Iterator& { + return it; +} + +template +using reserve_iterator = + remove_reference_t(), 0))>; + +template +constexpr auto to_pointer(OutputIt, size_t) -> T* { + return nullptr; +} +template auto to_pointer(basic_appender it, size_t n) -> T* { + buffer& buf = get_container(it); + auto size = buf.size(); + buf.try_reserve(size + n); + if (buf.capacity() < size + n) return nullptr; + buf.try_resize(size + n); + return buf.data() + size; +} + +template ::value&& + is_contiguous::value)> +inline auto base_iterator(OutputIt it, + typename OutputIt::container_type::value_type*) + -> OutputIt { + return it; +} + +template +constexpr auto base_iterator(Iterator, Iterator it) -> Iterator { + return it; +} + +// is spectacularly slow to compile in C++20 so use a simple fill_n +// instead (#1998). +template +FMT_CONSTEXPR auto fill_n(OutputIt out, Size count, const T& value) + -> OutputIt { + for (Size i = 0; i < count; ++i) *out++ = value; + return out; +} +template +FMT_CONSTEXPR20 auto fill_n(T* out, Size count, char value) -> T* { + if (is_constant_evaluated()) { + return fill_n(out, count, value); + } + std::memset(out, value, to_unsigned(count)); + return out + count; +} + +template +FMT_CONSTEXPR FMT_NOINLINE auto copy_noinline(InputIt begin, InputIt end, + OutputIt out) -> OutputIt { + return copy(begin, end, out); +} + +// A public domain branchless UTF-8 decoder by Christopher Wellons: +// https://github.com/skeeto/branchless-utf8 +/* Decode the next character, c, from s, reporting errors in e. + * + * Since this is a branchless decoder, four bytes will be read from the + * buffer regardless of the actual length of the next character. This + * means the buffer _must_ have at least three bytes of zero padding + * following the end of the data stream. + * + * Errors are reported in e, which will be non-zero if the parsed + * character was somehow invalid: invalid byte sequence, non-canonical + * encoding, or a surrogate half. + * + * The function returns a pointer to the next character. When an error + * occurs, this pointer will be a guess that depends on the particular + * error, but it will always advance at least one byte. + */ +FMT_CONSTEXPR inline auto utf8_decode(const char* s, uint32_t* c, int* e) + -> const char* { + constexpr const int masks[] = {0x00, 0x7f, 0x1f, 0x0f, 0x07}; + constexpr const uint32_t mins[] = {4194304, 0, 128, 2048, 65536}; + constexpr const int shiftc[] = {0, 18, 12, 6, 0}; + constexpr const int shifte[] = {0, 6, 4, 2, 0}; + + int len = "\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\0\0\0\0\0\0\0\0\2\2\2\2\3\3\4" + [static_cast(*s) >> 3]; + // Compute the pointer to the next character early so that the next + // iteration can start working on the next character. Neither Clang + // nor GCC figure out this reordering on their own. + const char* next = s + len + !len; + + using uchar = unsigned char; + + // Assume a four-byte character and load four bytes. Unused bits are + // shifted out. + *c = uint32_t(uchar(s[0]) & masks[len]) << 18; + *c |= uint32_t(uchar(s[1]) & 0x3f) << 12; + *c |= uint32_t(uchar(s[2]) & 0x3f) << 6; + *c |= uint32_t(uchar(s[3]) & 0x3f) << 0; + *c >>= shiftc[len]; + + // Accumulate the various error conditions. + *e = (*c < mins[len]) << 6; // non-canonical encoding + *e |= ((*c >> 11) == 0x1b) << 7; // surrogate half? + *e |= (*c > 0x10FFFF) << 8; // out of range? + *e |= (uchar(s[1]) & 0xc0) >> 2; + *e |= (uchar(s[2]) & 0xc0) >> 4; + *e |= uchar(s[3]) >> 6; + *e ^= 0x2a; // top two bits of each tail byte correct? + *e >>= shifte[len]; + + return next; +} + +constexpr FMT_INLINE_VARIABLE uint32_t invalid_code_point = ~uint32_t(); + +// Invokes f(cp, sv) for every code point cp in s with sv being the string view +// corresponding to the code point. cp is invalid_code_point on error. +template +FMT_CONSTEXPR void for_each_codepoint(string_view s, F f) { + auto decode = [f](const char* buf_ptr, const char* ptr) { + auto cp = uint32_t(); + auto error = 0; + auto end = utf8_decode(buf_ptr, &cp, &error); + bool result = f(error ? invalid_code_point : cp, + string_view(ptr, error ? 1 : to_unsigned(end - buf_ptr))); + return result ? (error ? buf_ptr + 1 : end) : nullptr; + }; + auto p = s.data(); + const size_t block_size = 4; // utf8_decode always reads blocks of 4 chars. + if (s.size() >= block_size) { + for (auto end = p + s.size() - block_size + 1; p < end;) { + p = decode(p, p); + if (!p) return; + } + } + if (auto num_chars_left = s.data() + s.size() - p) { + char buf[2 * block_size - 1] = {}; + copy(p, p + num_chars_left, buf); + const char* buf_ptr = buf; + do { + auto end = decode(buf_ptr, p); + if (!end) return; + p += end - buf_ptr; + buf_ptr = end; + } while (buf_ptr - buf < num_chars_left); + } +} + +template +inline auto compute_width(basic_string_view s) -> size_t { + return s.size(); +} + +// Computes approximate display width of a UTF-8 string. +FMT_CONSTEXPR inline auto compute_width(string_view s) -> size_t { + size_t num_code_points = 0; + // It is not a lambda for compatibility with C++14. + struct count_code_points { + size_t* count; + FMT_CONSTEXPR auto operator()(uint32_t cp, string_view) const -> bool { + *count += detail::to_unsigned( + 1 + + (cp >= 0x1100 && + (cp <= 0x115f || // Hangul Jamo init. consonants + cp == 0x2329 || // LEFT-POINTING ANGLE BRACKET + cp == 0x232a || // RIGHT-POINTING ANGLE BRACKET + // CJK ... Yi except IDEOGRAPHIC HALF FILL SPACE: + (cp >= 0x2e80 && cp <= 0xa4cf && cp != 0x303f) || + (cp >= 0xac00 && cp <= 0xd7a3) || // Hangul Syllables + (cp >= 0xf900 && cp <= 0xfaff) || // CJK Compatibility Ideographs + (cp >= 0xfe10 && cp <= 0xfe19) || // Vertical Forms + (cp >= 0xfe30 && cp <= 0xfe6f) || // CJK Compatibility Forms + (cp >= 0xff00 && cp <= 0xff60) || // Fullwidth Forms + (cp >= 0xffe0 && cp <= 0xffe6) || // Fullwidth Forms + (cp >= 0x20000 && cp <= 0x2fffd) || // CJK + (cp >= 0x30000 && cp <= 0x3fffd) || + // Miscellaneous Symbols and Pictographs + Emoticons: + (cp >= 0x1f300 && cp <= 0x1f64f) || + // Supplemental Symbols and Pictographs: + (cp >= 0x1f900 && cp <= 0x1f9ff)))); + return true; + } + }; + // We could avoid branches by using utf8_decode directly. + for_each_codepoint(s, count_code_points{&num_code_points}); + return num_code_points; +} + +template +inline auto code_point_index(basic_string_view s, size_t n) -> size_t { + size_t size = s.size(); + return n < size ? n : size; +} + +// Calculates the index of the nth code point in a UTF-8 string. +inline auto code_point_index(string_view s, size_t n) -> size_t { + size_t result = s.size(); + const char* begin = s.begin(); + for_each_codepoint(s, [begin, &n, &result](uint32_t, string_view sv) { + if (n != 0) { + --n; + return true; + } + result = to_unsigned(sv.begin() - begin); + return false; + }); + return result; +} + +template struct is_integral : std::is_integral {}; +template <> struct is_integral : std::true_type {}; +template <> struct is_integral : std::true_type {}; + +template +using is_signed = + std::integral_constant::is_signed || + std::is_same::value>; + +template +using is_integer = + bool_constant::value && !std::is_same::value && + !std::is_same::value && + !std::is_same::value>; + +#ifndef FMT_USE_FLOAT +# define FMT_USE_FLOAT 1 +#endif +#ifndef FMT_USE_DOUBLE +# define FMT_USE_DOUBLE 1 +#endif +#ifndef FMT_USE_LONG_DOUBLE +# define FMT_USE_LONG_DOUBLE 1 +#endif + +#if defined(FMT_USE_FLOAT128) +// Use the provided definition. +#elif FMT_CLANG_VERSION && FMT_HAS_INCLUDE() +# define FMT_USE_FLOAT128 1 +#elif FMT_GCC_VERSION && defined(_GLIBCXX_USE_FLOAT128) && \ + !defined(__STRICT_ANSI__) +# define FMT_USE_FLOAT128 1 +#else +# define FMT_USE_FLOAT128 0 +#endif +#if FMT_USE_FLOAT128 +using float128 = __float128; +#else +using float128 = void; +#endif + +template using is_float128 = std::is_same; + +template +using is_floating_point = + bool_constant::value || is_float128::value>; + +template ::value> +struct is_fast_float : bool_constant::is_iec559 && + sizeof(T) <= sizeof(double)> {}; +template struct is_fast_float : std::false_type {}; + +template +using is_double_double = bool_constant::digits == 106>; + +#ifndef FMT_USE_FULL_CACHE_DRAGONBOX +# define FMT_USE_FULL_CACHE_DRAGONBOX 0 +#endif + +template +struct is_locale : std::false_type {}; +template +struct is_locale> : std::true_type {}; +} // namespace detail + +FMT_BEGIN_EXPORT + +// The number of characters to store in the basic_memory_buffer object itself +// to avoid dynamic memory allocation. +enum { inline_buffer_size = 500 }; + +/** + * A dynamically growing memory buffer for trivially copyable/constructible + * types with the first `SIZE` elements stored in the object itself. Most + * commonly used via the `memory_buffer` alias for `char`. + * + * **Example**: + * + * auto out = fmt::memory_buffer(); + * fmt::format_to(std::back_inserter(out), "The answer is {}.", 42); + * + * This will append "The answer is 42." to `out`. The buffer content can be + * converted to `std::string` with `to_string(out)`. + */ +template > +class basic_memory_buffer : public detail::buffer { + private: + T store_[SIZE]; + + // Don't inherit from Allocator to avoid generating type_info for it. + FMT_NO_UNIQUE_ADDRESS Allocator alloc_; + + // Deallocate memory allocated by the buffer. + FMT_CONSTEXPR20 void deallocate() { + T* data = this->data(); + if (data != store_) alloc_.deallocate(data, this->capacity()); + } + + static FMT_CONSTEXPR20 void grow(detail::buffer& buf, size_t size) { + detail::abort_fuzzing_if(size > 5000); + auto& self = static_cast(buf); + const size_t max_size = + std::allocator_traits::max_size(self.alloc_); + size_t old_capacity = buf.capacity(); + size_t new_capacity = old_capacity + old_capacity / 2; + if (size > new_capacity) + new_capacity = size; + else if (new_capacity > max_size) + new_capacity = size > max_size ? size : max_size; + T* old_data = buf.data(); + T* new_data = self.alloc_.allocate(new_capacity); + // Suppress a bogus -Wstringop-overflow in gcc 13.1 (#3481). + detail::assume(buf.size() <= new_capacity); + // The following code doesn't throw, so the raw pointer above doesn't leak. + memcpy(new_data, old_data, buf.size() * sizeof(T)); + self.set(new_data, new_capacity); + // deallocate must not throw according to the standard, but even if it does, + // the buffer already uses the new storage and will deallocate it in + // destructor. + if (old_data != self.store_) self.alloc_.deallocate(old_data, old_capacity); + } + + public: + using value_type = T; + using const_reference = const T&; + + FMT_CONSTEXPR20 explicit basic_memory_buffer( + const Allocator& alloc = Allocator()) + : detail::buffer(grow), alloc_(alloc) { + this->set(store_, SIZE); + if (detail::is_constant_evaluated()) detail::fill_n(store_, SIZE, T()); + } + FMT_CONSTEXPR20 ~basic_memory_buffer() { deallocate(); } + + private: + // Move data from other to this buffer. + FMT_CONSTEXPR20 void move(basic_memory_buffer& other) { + alloc_ = std::move(other.alloc_); + T* data = other.data(); + size_t size = other.size(), capacity = other.capacity(); + if (data == other.store_) { + this->set(store_, capacity); + detail::copy(other.store_, other.store_ + size, store_); + } else { + this->set(data, capacity); + // Set pointer to the inline array so that delete is not called + // when deallocating. + other.set(other.store_, 0); + other.clear(); + } + this->resize(size); + } + + public: + /// Constructs a `basic_memory_buffer` object moving the content of the other + /// object to it. + FMT_CONSTEXPR20 basic_memory_buffer(basic_memory_buffer&& other) noexcept + : detail::buffer(grow) { + move(other); + } + + /// Moves the content of the other `basic_memory_buffer` object to this one. + auto operator=(basic_memory_buffer&& other) noexcept -> basic_memory_buffer& { + FMT_ASSERT(this != &other, ""); + deallocate(); + move(other); + return *this; + } + + // Returns a copy of the allocator associated with this buffer. + auto get_allocator() const -> Allocator { return alloc_; } + + /// Resizes the buffer to contain `count` elements. If T is a POD type new + /// elements may not be initialized. + FMT_CONSTEXPR20 void resize(size_t count) { this->try_resize(count); } + + /// Increases the buffer capacity to `new_capacity`. + void reserve(size_t new_capacity) { this->try_reserve(new_capacity); } + + using detail::buffer::append; + template + void append(const ContiguousRange& range) { + append(range.data(), range.data() + range.size()); + } +}; + +using memory_buffer = basic_memory_buffer; + +template +struct is_contiguous> : std::true_type { +}; + +FMT_END_EXPORT +namespace detail { +FMT_API auto write_console(int fd, string_view text) -> bool; +FMT_API void print(std::FILE*, string_view); +} // namespace detail + +FMT_BEGIN_EXPORT + +// Suppress a misleading warning in older versions of clang. +#if FMT_CLANG_VERSION +# pragma clang diagnostic ignored "-Wweak-vtables" +#endif + +/// An error reported from a formatting function. +class FMT_SO_VISIBILITY("default") format_error : public std::runtime_error { + public: + using std::runtime_error::runtime_error; +}; + +namespace detail_exported { +#if FMT_USE_NONTYPE_TEMPLATE_ARGS +template struct fixed_string { + constexpr fixed_string(const Char (&str)[N]) { + detail::copy(static_cast(str), + str + N, data); + } + Char data[N] = {}; +}; +#endif + +// Converts a compile-time string to basic_string_view. +template +constexpr auto compile_string_to_view(const Char (&s)[N]) + -> basic_string_view { + // Remove trailing NUL character if needed. Won't be present if this is used + // with a raw character array (i.e. not defined as a string). + return {s, N - (std::char_traits::to_int_type(s[N - 1]) == 0 ? 1 : 0)}; +} +template +constexpr auto compile_string_to_view(basic_string_view s) + -> basic_string_view { + return s; +} +} // namespace detail_exported + +// A generic formatting context with custom output iterator and character +// (code unit) support. Char is the format string code unit type which can be +// different from OutputIt::value_type. +template class generic_context { + private: + OutputIt out_; + basic_format_args args_; + detail::locale_ref loc_; + + public: + using char_type = Char; + using iterator = OutputIt; + using parse_context_type = basic_format_parse_context; + template using formatter_type = formatter; + + constexpr generic_context(OutputIt out, + basic_format_args ctx_args, + detail::locale_ref loc = {}) + : out_(out), args_(ctx_args), loc_(loc) {} + generic_context(generic_context&&) = default; + generic_context(const generic_context&) = delete; + void operator=(const generic_context&) = delete; + + constexpr auto arg(int id) const -> basic_format_arg { + return args_.get(id); + } + auto arg(basic_string_view name) -> basic_format_arg { + return args_.get(name); + } + FMT_CONSTEXPR auto arg_id(basic_string_view name) -> int { + return args_.get_id(name); + } + auto args() const -> const basic_format_args& { + return args_; + } + + FMT_CONSTEXPR auto out() -> iterator { return out_; } + + void advance_to(iterator it) { + if (!detail::is_back_insert_iterator()) out_ = it; + } + + FMT_CONSTEXPR auto locale() -> detail::locale_ref { return loc_; } +}; + +class loc_value { + private: + basic_format_arg value_; + + public: + template ::value)> + loc_value(T value) : value_(detail::make_arg(value)) {} + + template ::value)> + loc_value(T) {} + + template auto visit(Visitor&& vis) -> decltype(vis(0)) { + return value_.visit(vis); + } +}; + +// A locale facet that formats values in UTF-8. +// It is parameterized on the locale to avoid the heavy include. +template class format_facet : public Locale::facet { + private: + std::string separator_; + std::string grouping_; + std::string decimal_point_; + + protected: + virtual auto do_put(appender out, loc_value val, + const format_specs& specs) const -> bool; + + public: + static FMT_API typename Locale::id id; + + explicit format_facet(Locale& loc); + explicit format_facet(string_view sep = "", + std::initializer_list g = {3}, + std::string decimal_point = ".") + : separator_(sep.data(), sep.size()), + grouping_(g.begin(), g.end()), + decimal_point_(decimal_point) {} + + auto put(appender out, loc_value val, const format_specs& specs) const + -> bool { + return do_put(out, val, specs); + } +}; + +FMT_END_EXPORT + +namespace detail { + +// Returns true if value is negative, false otherwise. +// Same as `value < 0` but doesn't produce warnings if T is an unsigned type. +template ::value)> +constexpr auto is_negative(T value) -> bool { + return value < 0; +} +template ::value)> +constexpr auto is_negative(T) -> bool { + return false; +} + +template +FMT_CONSTEXPR auto is_supported_floating_point(T) -> bool { + if (std::is_same()) return FMT_USE_FLOAT; + if (std::is_same()) return FMT_USE_DOUBLE; + if (std::is_same()) return FMT_USE_LONG_DOUBLE; + return true; +} + +// Smallest of uint32_t, uint64_t, uint128_t that is large enough to +// represent all values of an integral type T. +template +using uint32_or_64_or_128_t = + conditional_t() <= 32 && !FMT_REDUCE_INT_INSTANTIATIONS, + uint32_t, + conditional_t() <= 64, uint64_t, uint128_t>>; +template +using uint64_or_128_t = conditional_t() <= 64, uint64_t, uint128_t>; + +#define FMT_POWERS_OF_10(factor) \ + factor * 10, (factor) * 100, (factor) * 1000, (factor) * 10000, \ + (factor) * 100000, (factor) * 1000000, (factor) * 10000000, \ + (factor) * 100000000, (factor) * 1000000000 + +// Converts value in the range [0, 100) to a string. +constexpr auto digits2(size_t value) -> const char* { + // GCC generates slightly better code when value is pointer-size. + return &"0001020304050607080910111213141516171819" + "2021222324252627282930313233343536373839" + "4041424344454647484950515253545556575859" + "6061626364656667686970717273747576777879" + "8081828384858687888990919293949596979899"[value * 2]; +} + +// Sign is a template parameter to workaround a bug in gcc 4.8. +template constexpr auto sign(Sign s) -> Char { +#if !FMT_GCC_VERSION || FMT_GCC_VERSION >= 604 + static_assert(std::is_same::value, ""); +#endif + return static_cast(((' ' << 24) | ('+' << 16) | ('-' << 8)) >> (s * 8)); +} + +template FMT_CONSTEXPR auto count_digits_fallback(T n) -> int { + int count = 1; + for (;;) { + // Integer division is slow so do it for a group of four digits instead + // of for every digit. The idea comes from the talk by Alexandrescu + // "Three Optimization Tips for C++". See speed-test for a comparison. + if (n < 10) return count; + if (n < 100) return count + 1; + if (n < 1000) return count + 2; + if (n < 10000) return count + 3; + n /= 10000u; + count += 4; + } +} +#if FMT_USE_INT128 +FMT_CONSTEXPR inline auto count_digits(uint128_opt n) -> int { + return count_digits_fallback(n); +} +#endif + +#ifdef FMT_BUILTIN_CLZLL +// It is a separate function rather than a part of count_digits to workaround +// the lack of static constexpr in constexpr functions. +inline auto do_count_digits(uint64_t n) -> int { + // This has comparable performance to the version by Kendall Willets + // (https://github.com/fmtlib/format-benchmark/blob/master/digits10) + // but uses smaller tables. + // Maps bsr(n) to ceil(log10(pow(2, bsr(n) + 1) - 1)). + static constexpr uint8_t bsr2log10[] = { + 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, + 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, + 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 15, 15, + 15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 19, 19, 20}; + auto t = bsr2log10[FMT_BUILTIN_CLZLL(n | 1) ^ 63]; + static constexpr const uint64_t zero_or_powers_of_10[] = { + 0, 0, FMT_POWERS_OF_10(1U), FMT_POWERS_OF_10(1000000000ULL), + 10000000000000000000ULL}; + return t - (n < zero_or_powers_of_10[t]); +} +#endif + +// Returns the number of decimal digits in n. Leading zeros are not counted +// except for n == 0 in which case count_digits returns 1. +FMT_CONSTEXPR20 inline auto count_digits(uint64_t n) -> int { +#ifdef FMT_BUILTIN_CLZLL + if (!is_constant_evaluated()) return do_count_digits(n); +#endif + return count_digits_fallback(n); +} + +// Counts the number of digits in n. BITS = log2(radix). +template +FMT_CONSTEXPR auto count_digits(UInt n) -> int { +#ifdef FMT_BUILTIN_CLZ + if (!is_constant_evaluated() && num_bits() == 32) + return (FMT_BUILTIN_CLZ(static_cast(n) | 1) ^ 31) / BITS + 1; +#endif + // Lambda avoids unreachable code warnings from NVHPC. + return [](UInt m) { + int num_digits = 0; + do { + ++num_digits; + } while ((m >>= BITS) != 0); + return num_digits; + }(n); +} + +#ifdef FMT_BUILTIN_CLZ +// It is a separate function rather than a part of count_digits to workaround +// the lack of static constexpr in constexpr functions. +FMT_INLINE auto do_count_digits(uint32_t n) -> int { +// An optimization by Kendall Willets from https://bit.ly/3uOIQrB. +// This increments the upper 32 bits (log10(T) - 1) when >= T is added. +# define FMT_INC(T) (((sizeof(#T) - 1ull) << 32) - T) + static constexpr uint64_t table[] = { + FMT_INC(0), FMT_INC(0), FMT_INC(0), // 8 + FMT_INC(10), FMT_INC(10), FMT_INC(10), // 64 + FMT_INC(100), FMT_INC(100), FMT_INC(100), // 512 + FMT_INC(1000), FMT_INC(1000), FMT_INC(1000), // 4096 + FMT_INC(10000), FMT_INC(10000), FMT_INC(10000), // 32k + FMT_INC(100000), FMT_INC(100000), FMT_INC(100000), // 256k + FMT_INC(1000000), FMT_INC(1000000), FMT_INC(1000000), // 2048k + FMT_INC(10000000), FMT_INC(10000000), FMT_INC(10000000), // 16M + FMT_INC(100000000), FMT_INC(100000000), FMT_INC(100000000), // 128M + FMT_INC(1000000000), FMT_INC(1000000000), FMT_INC(1000000000), // 1024M + FMT_INC(1000000000), FMT_INC(1000000000) // 4B + }; + auto inc = table[FMT_BUILTIN_CLZ(n | 1) ^ 31]; + return static_cast((n + inc) >> 32); +} +#endif + +// Optional version of count_digits for better performance on 32-bit platforms. +FMT_CONSTEXPR20 inline auto count_digits(uint32_t n) -> int { +#ifdef FMT_BUILTIN_CLZ + if (!is_constant_evaluated()) { + return do_count_digits(n); + } +#endif + return count_digits_fallback(n); +} + +template constexpr auto digits10() noexcept -> int { + return std::numeric_limits::digits10; +} +template <> constexpr auto digits10() noexcept -> int { return 38; } +template <> constexpr auto digits10() noexcept -> int { return 38; } + +template struct thousands_sep_result { + std::string grouping; + Char thousands_sep; +}; + +template +FMT_API auto thousands_sep_impl(locale_ref loc) -> thousands_sep_result; +template +inline auto thousands_sep(locale_ref loc) -> thousands_sep_result { + auto result = thousands_sep_impl(loc); + return {result.grouping, Char(result.thousands_sep)}; +} +template <> +inline auto thousands_sep(locale_ref loc) -> thousands_sep_result { + return thousands_sep_impl(loc); +} + +template +FMT_API auto decimal_point_impl(locale_ref loc) -> Char; +template inline auto decimal_point(locale_ref loc) -> Char { + return Char(decimal_point_impl(loc)); +} +template <> inline auto decimal_point(locale_ref loc) -> wchar_t { + return decimal_point_impl(loc); +} + +// Compares two characters for equality. +template auto equal2(const Char* lhs, const char* rhs) -> bool { + return lhs[0] == Char(rhs[0]) && lhs[1] == Char(rhs[1]); +} +inline auto equal2(const char* lhs, const char* rhs) -> bool { + return memcmp(lhs, rhs, 2) == 0; +} + +// Copies two characters from src to dst. +template +FMT_CONSTEXPR20 FMT_INLINE void copy2(Char* dst, const char* src) { + if (!is_constant_evaluated() && sizeof(Char) == sizeof(char)) { + memcpy(dst, src, 2); + return; + } + *dst++ = static_cast(*src++); + *dst = static_cast(*src); +} + +template struct format_decimal_result { + Iterator begin; + Iterator end; +}; + +// Formats a decimal unsigned integer value writing into out pointing to a +// buffer of specified size. The caller must ensure that the buffer is large +// enough. +template +FMT_CONSTEXPR20 auto format_decimal(Char* out, UInt value, int size) + -> format_decimal_result { + FMT_ASSERT(size >= count_digits(value), "invalid digit count"); + out += size; + Char* end = out; + while (value >= 100) { + // Integer division is slow so do it for a group of two digits instead + // of for every digit. The idea comes from the talk by Alexandrescu + // "Three Optimization Tips for C++". See speed-test for a comparison. + out -= 2; + copy2(out, digits2(static_cast(value % 100))); + value /= 100; + } + if (value < 10) { + *--out = static_cast('0' + value); + return {out, end}; + } + out -= 2; + copy2(out, digits2(static_cast(value))); + return {out, end}; +} + +template >::value)> +FMT_CONSTEXPR inline auto format_decimal(Iterator out, UInt value, int size) + -> format_decimal_result { + // Buffer is large enough to hold all digits (digits10 + 1). + Char buffer[digits10() + 1] = {}; + auto end = format_decimal(buffer, value, size).end; + return {out, detail::copy_noinline(buffer, end, out)}; +} + +template +FMT_CONSTEXPR auto format_uint(Char* buffer, UInt value, int num_digits, + bool upper = false) -> Char* { + buffer += num_digits; + Char* end = buffer; + do { + const char* digits = upper ? "0123456789ABCDEF" : "0123456789abcdef"; + unsigned digit = static_cast(value & ((1 << BASE_BITS) - 1)); + *--buffer = static_cast(BASE_BITS < 4 ? static_cast('0' + digit) + : digits[digit]); + } while ((value >>= BASE_BITS) != 0); + return end; +} + +template +FMT_CONSTEXPR inline auto format_uint(It out, UInt value, int num_digits, + bool upper = false) -> It { + if (auto ptr = to_pointer(out, to_unsigned(num_digits))) { + format_uint(ptr, value, num_digits, upper); + return out; + } + // Buffer should be large enough to hold all digits (digits / BASE_BITS + 1). + char buffer[num_bits() / BASE_BITS + 1] = {}; + format_uint(buffer, value, num_digits, upper); + return detail::copy_noinline(buffer, buffer + num_digits, out); +} + +// A converter from UTF-8 to UTF-16. +class utf8_to_utf16 { + private: + basic_memory_buffer buffer_; + + public: + FMT_API explicit utf8_to_utf16(string_view s); + operator basic_string_view() const { return {&buffer_[0], size()}; } + auto size() const -> size_t { return buffer_.size() - 1; } + auto c_str() const -> const wchar_t* { return &buffer_[0]; } + auto str() const -> std::wstring { return {&buffer_[0], size()}; } +}; + +enum class to_utf8_error_policy { abort, replace }; + +// A converter from UTF-16/UTF-32 (host endian) to UTF-8. +template class to_utf8 { + private: + Buffer buffer_; + + public: + to_utf8() {} + explicit to_utf8(basic_string_view s, + to_utf8_error_policy policy = to_utf8_error_policy::abort) { + static_assert(sizeof(WChar) == 2 || sizeof(WChar) == 4, + "Expect utf16 or utf32"); + if (!convert(s, policy)) + FMT_THROW(std::runtime_error(sizeof(WChar) == 2 ? "invalid utf16" + : "invalid utf32")); + } + operator string_view() const { return string_view(&buffer_[0], size()); } + auto size() const -> size_t { return buffer_.size() - 1; } + auto c_str() const -> const char* { return &buffer_[0]; } + auto str() const -> std::string { return std::string(&buffer_[0], size()); } + + // Performs conversion returning a bool instead of throwing exception on + // conversion error. This method may still throw in case of memory allocation + // error. + auto convert(basic_string_view s, + to_utf8_error_policy policy = to_utf8_error_policy::abort) + -> bool { + if (!convert(buffer_, s, policy)) return false; + buffer_.push_back(0); + return true; + } + static auto convert(Buffer& buf, basic_string_view s, + to_utf8_error_policy policy = to_utf8_error_policy::abort) + -> bool { + for (auto p = s.begin(); p != s.end(); ++p) { + uint32_t c = static_cast(*p); + if (sizeof(WChar) == 2 && c >= 0xd800 && c <= 0xdfff) { + // Handle a surrogate pair. + ++p; + if (p == s.end() || (c & 0xfc00) != 0xd800 || (*p & 0xfc00) != 0xdc00) { + if (policy == to_utf8_error_policy::abort) return false; + buf.append(string_view("\xEF\xBF\xBD")); + --p; + } else { + c = (c << 10) + static_cast(*p) - 0x35fdc00; + } + } else if (c < 0x80) { + buf.push_back(static_cast(c)); + } else if (c < 0x800) { + buf.push_back(static_cast(0xc0 | (c >> 6))); + buf.push_back(static_cast(0x80 | (c & 0x3f))); + } else if ((c >= 0x800 && c <= 0xd7ff) || (c >= 0xe000 && c <= 0xffff)) { + buf.push_back(static_cast(0xe0 | (c >> 12))); + buf.push_back(static_cast(0x80 | ((c & 0xfff) >> 6))); + buf.push_back(static_cast(0x80 | (c & 0x3f))); + } else if (c >= 0x10000 && c <= 0x10ffff) { + buf.push_back(static_cast(0xf0 | (c >> 18))); + buf.push_back(static_cast(0x80 | ((c & 0x3ffff) >> 12))); + buf.push_back(static_cast(0x80 | ((c & 0xfff) >> 6))); + buf.push_back(static_cast(0x80 | (c & 0x3f))); + } else { + return false; + } + } + return true; + } +}; + +// Computes 128-bit result of multiplication of two 64-bit unsigned integers. +inline auto umul128(uint64_t x, uint64_t y) noexcept -> uint128_fallback { +#if FMT_USE_INT128 + auto p = static_cast(x) * static_cast(y); + return {static_cast(p >> 64), static_cast(p)}; +#elif defined(_MSC_VER) && defined(_M_X64) + auto hi = uint64_t(); + auto lo = _umul128(x, y, &hi); + return {hi, lo}; +#else + const uint64_t mask = static_cast(max_value()); + + uint64_t a = x >> 32; + uint64_t b = x & mask; + uint64_t c = y >> 32; + uint64_t d = y & mask; + + uint64_t ac = a * c; + uint64_t bc = b * c; + uint64_t ad = a * d; + uint64_t bd = b * d; + + uint64_t intermediate = (bd >> 32) + (ad & mask) + (bc & mask); + + return {ac + (intermediate >> 32) + (ad >> 32) + (bc >> 32), + (intermediate << 32) + (bd & mask)}; +#endif +} + +namespace dragonbox { +// Computes floor(log10(pow(2, e))) for e in [-2620, 2620] using the method from +// https://fmt.dev/papers/Dragonbox.pdf#page=28, section 6.1. +inline auto floor_log10_pow2(int e) noexcept -> int { + FMT_ASSERT(e <= 2620 && e >= -2620, "too large exponent"); + static_assert((-1 >> 1) == -1, "right shift is not arithmetic"); + return (e * 315653) >> 20; +} + +inline auto floor_log2_pow10(int e) noexcept -> int { + FMT_ASSERT(e <= 1233 && e >= -1233, "too large exponent"); + return (e * 1741647) >> 19; +} + +// Computes upper 64 bits of multiplication of two 64-bit unsigned integers. +inline auto umul128_upper64(uint64_t x, uint64_t y) noexcept -> uint64_t { +#if FMT_USE_INT128 + auto p = static_cast(x) * static_cast(y); + return static_cast(p >> 64); +#elif defined(_MSC_VER) && defined(_M_X64) + return __umulh(x, y); +#else + return umul128(x, y).high(); +#endif +} + +// Computes upper 128 bits of multiplication of a 64-bit unsigned integer and a +// 128-bit unsigned integer. +inline auto umul192_upper128(uint64_t x, uint128_fallback y) noexcept + -> uint128_fallback { + uint128_fallback r = umul128(x, y.high()); + r += umul128_upper64(x, y.low()); + return r; +} + +FMT_API auto get_cached_power(int k) noexcept -> uint128_fallback; + +// Type-specific information that Dragonbox uses. +template struct float_info; + +template <> struct float_info { + using carrier_uint = uint32_t; + static const int exponent_bits = 8; + static const int kappa = 1; + static const int big_divisor = 100; + static const int small_divisor = 10; + static const int min_k = -31; + static const int max_k = 46; + static const int shorter_interval_tie_lower_threshold = -35; + static const int shorter_interval_tie_upper_threshold = -35; +}; + +template <> struct float_info { + using carrier_uint = uint64_t; + static const int exponent_bits = 11; + static const int kappa = 2; + static const int big_divisor = 1000; + static const int small_divisor = 100; + static const int min_k = -292; + static const int max_k = 341; + static const int shorter_interval_tie_lower_threshold = -77; + static const int shorter_interval_tie_upper_threshold = -77; +}; + +// An 80- or 128-bit floating point number. +template +struct float_info::digits == 64 || + std::numeric_limits::digits == 113 || + is_float128::value>> { + using carrier_uint = detail::uint128_t; + static const int exponent_bits = 15; +}; + +// A double-double floating point number. +template +struct float_info::value>> { + using carrier_uint = detail::uint128_t; +}; + +template struct decimal_fp { + using significand_type = typename float_info::carrier_uint; + significand_type significand; + int exponent; +}; + +template FMT_API auto to_decimal(T x) noexcept -> decimal_fp; +} // namespace dragonbox + +// Returns true iff Float has the implicit bit which is not stored. +template constexpr auto has_implicit_bit() -> bool { + // An 80-bit FP number has a 64-bit significand an no implicit bit. + return std::numeric_limits::digits != 64; +} + +// Returns the number of significand bits stored in Float. The implicit bit is +// not counted since it is not stored. +template constexpr auto num_significand_bits() -> int { + // std::numeric_limits may not support __float128. + return is_float128() ? 112 + : (std::numeric_limits::digits - + (has_implicit_bit() ? 1 : 0)); +} + +template +constexpr auto exponent_mask() -> + typename dragonbox::float_info::carrier_uint { + using float_uint = typename dragonbox::float_info::carrier_uint; + return ((float_uint(1) << dragonbox::float_info::exponent_bits) - 1) + << num_significand_bits(); +} +template constexpr auto exponent_bias() -> int { + // std::numeric_limits may not support __float128. + return is_float128() ? 16383 + : std::numeric_limits::max_exponent - 1; +} + +// Writes the exponent exp in the form "[+-]d{2,3}" to buffer. +template +FMT_CONSTEXPR auto write_exponent(int exp, It it) -> It { + FMT_ASSERT(-10000 < exp && exp < 10000, "exponent out of range"); + if (exp < 0) { + *it++ = static_cast('-'); + exp = -exp; + } else { + *it++ = static_cast('+'); + } + if (exp >= 100) { + const char* top = digits2(to_unsigned(exp / 100)); + if (exp >= 1000) *it++ = static_cast(top[0]); + *it++ = static_cast(top[1]); + exp %= 100; + } + const char* d = digits2(to_unsigned(exp)); + *it++ = static_cast(d[0]); + *it++ = static_cast(d[1]); + return it; +} + +// A floating-point number f * pow(2, e) where F is an unsigned type. +template struct basic_fp { + F f; + int e; + + static constexpr const int num_significand_bits = + static_cast(sizeof(F) * num_bits()); + + constexpr basic_fp() : f(0), e(0) {} + constexpr basic_fp(uint64_t f_val, int e_val) : f(f_val), e(e_val) {} + + // Constructs fp from an IEEE754 floating-point number. + template FMT_CONSTEXPR basic_fp(Float n) { assign(n); } + + // Assigns n to this and return true iff predecessor is closer than successor. + template ::value)> + FMT_CONSTEXPR auto assign(Float n) -> bool { + static_assert(std::numeric_limits::digits <= 113, "unsupported FP"); + // Assume Float is in the format [sign][exponent][significand]. + using carrier_uint = typename dragonbox::float_info::carrier_uint; + const auto num_float_significand_bits = + detail::num_significand_bits(); + const auto implicit_bit = carrier_uint(1) << num_float_significand_bits; + const auto significand_mask = implicit_bit - 1; + auto u = bit_cast(n); + f = static_cast(u & significand_mask); + auto biased_e = static_cast((u & exponent_mask()) >> + num_float_significand_bits); + // The predecessor is closer if n is a normalized power of 2 (f == 0) + // other than the smallest normalized number (biased_e > 1). + auto is_predecessor_closer = f == 0 && biased_e > 1; + if (biased_e == 0) + biased_e = 1; // Subnormals use biased exponent 1 (min exponent). + else if (has_implicit_bit()) + f += static_cast(implicit_bit); + e = biased_e - exponent_bias() - num_float_significand_bits; + if (!has_implicit_bit()) ++e; + return is_predecessor_closer; + } + + template ::value)> + FMT_CONSTEXPR auto assign(Float n) -> bool { + static_assert(std::numeric_limits::is_iec559, "unsupported FP"); + return assign(static_cast(n)); + } +}; + +using fp = basic_fp; + +// Normalizes the value converted from double and multiplied by (1 << SHIFT). +template +FMT_CONSTEXPR auto normalize(basic_fp value) -> basic_fp { + // Handle subnormals. + const auto implicit_bit = F(1) << num_significand_bits(); + const auto shifted_implicit_bit = implicit_bit << SHIFT; + while ((value.f & shifted_implicit_bit) == 0) { + value.f <<= 1; + --value.e; + } + // Subtract 1 to account for hidden bit. + const auto offset = basic_fp::num_significand_bits - + num_significand_bits() - SHIFT - 1; + value.f <<= offset; + value.e -= offset; + return value; +} + +// Computes lhs * rhs / pow(2, 64) rounded to nearest with half-up tie breaking. +FMT_CONSTEXPR inline auto multiply(uint64_t lhs, uint64_t rhs) -> uint64_t { +#if FMT_USE_INT128 + auto product = static_cast<__uint128_t>(lhs) * rhs; + auto f = static_cast(product >> 64); + return (static_cast(product) & (1ULL << 63)) != 0 ? f + 1 : f; +#else + // Multiply 32-bit parts of significands. + uint64_t mask = (1ULL << 32) - 1; + uint64_t a = lhs >> 32, b = lhs & mask; + uint64_t c = rhs >> 32, d = rhs & mask; + uint64_t ac = a * c, bc = b * c, ad = a * d, bd = b * d; + // Compute mid 64-bit of result and round. + uint64_t mid = (bd >> 32) + (ad & mask) + (bc & mask) + (1U << 31); + return ac + (ad >> 32) + (bc >> 32) + (mid >> 32); +#endif +} + +FMT_CONSTEXPR inline auto operator*(fp x, fp y) -> fp { + return {multiply(x.f, y.f), x.e + y.e + 64}; +} + +template () == num_bits()> +using convert_float_result = + conditional_t::value || doublish, double, T>; + +template +constexpr auto convert_float(T value) -> convert_float_result { + return static_cast>(value); +} + +template +FMT_NOINLINE FMT_CONSTEXPR auto fill(OutputIt it, size_t n, const fill_t& fill) + -> OutputIt { + auto fill_size = fill.size(); + if (fill_size == 1) return detail::fill_n(it, n, fill.template get()); + if (const Char* data = fill.template data()) { + for (size_t i = 0; i < n; ++i) it = copy(data, data + fill_size, it); + } + return it; +} + +// Writes the output of f, padded according to format specifications in specs. +// size: output size in code units. +// width: output display width in (terminal) column positions. +template +FMT_CONSTEXPR auto write_padded(OutputIt out, const format_specs& specs, + size_t size, size_t width, F&& f) -> OutputIt { + static_assert(align == align::left || align == align::right, ""); + unsigned spec_width = to_unsigned(specs.width); + size_t padding = spec_width > width ? spec_width - width : 0; + // Shifts are encoded as string literals because static constexpr is not + // supported in constexpr functions. + auto* shifts = align == align::left ? "\x1f\x1f\x00\x01" : "\x00\x1f\x00\x01"; + size_t left_padding = padding >> shifts[specs.align]; + size_t right_padding = padding - left_padding; + auto it = reserve(out, size + padding * specs.fill.size()); + if (left_padding != 0) it = fill(it, left_padding, specs.fill); + it = f(it); + if (right_padding != 0) it = fill(it, right_padding, specs.fill); + return base_iterator(out, it); +} + +template +constexpr auto write_padded(OutputIt out, const format_specs& specs, + size_t size, F&& f) -> OutputIt { + return write_padded(out, specs, size, size, f); +} + +template +FMT_CONSTEXPR auto write_bytes(OutputIt out, string_view bytes, + const format_specs& specs = {}) -> OutputIt { + return write_padded( + out, specs, bytes.size(), [bytes](reserve_iterator it) { + const char* data = bytes.data(); + return copy(data, data + bytes.size(), it); + }); +} + +template +auto write_ptr(OutputIt out, UIntPtr value, const format_specs* specs) + -> OutputIt { + int num_digits = count_digits<4>(value); + auto size = to_unsigned(num_digits) + size_t(2); + auto write = [=](reserve_iterator it) { + *it++ = static_cast('0'); + *it++ = static_cast('x'); + return format_uint<4, Char>(it, value, num_digits); + }; + return specs ? write_padded(out, *specs, size, write) + : base_iterator(out, write(reserve(out, size))); +} + +// Returns true iff the code point cp is printable. +FMT_API auto is_printable(uint32_t cp) -> bool; + +inline auto needs_escape(uint32_t cp) -> bool { + return cp < 0x20 || cp == 0x7f || cp == '"' || cp == '\\' || + !is_printable(cp); +} + +template struct find_escape_result { + const Char* begin; + const Char* end; + uint32_t cp; +}; + +template +auto find_escape(const Char* begin, const Char* end) + -> find_escape_result { + for (; begin != end; ++begin) { + uint32_t cp = static_cast>(*begin); + if (const_check(sizeof(Char) == 1) && cp >= 0x80) continue; + if (needs_escape(cp)) return {begin, begin + 1, cp}; + } + return {begin, nullptr, 0}; +} + +inline auto find_escape(const char* begin, const char* end) + -> find_escape_result { + if (!use_utf8()) return find_escape(begin, end); + auto result = find_escape_result{end, nullptr, 0}; + for_each_codepoint(string_view(begin, to_unsigned(end - begin)), + [&](uint32_t cp, string_view sv) { + if (needs_escape(cp)) { + result = {sv.begin(), sv.end(), cp}; + return false; + } + return true; + }); + return result; +} + +#define FMT_STRING_IMPL(s, base, explicit) \ + [] { \ + /* Use the hidden visibility as a workaround for a GCC bug (#1973). */ \ + /* Use a macro-like name to avoid shadowing warnings. */ \ + struct FMT_VISIBILITY("hidden") FMT_COMPILE_STRING : base { \ + using char_type FMT_MAYBE_UNUSED = fmt::remove_cvref_t; \ + FMT_MAYBE_UNUSED FMT_CONSTEXPR explicit \ + operator fmt::basic_string_view() const { \ + return fmt::detail_exported::compile_string_to_view(s); \ + } \ + }; \ + return FMT_COMPILE_STRING(); \ + }() + +/** + * Constructs a compile-time format string from a string literal `s`. + * + * **Example**: + * + * // A compile-time error because 'd' is an invalid specifier for strings. + * std::string s = fmt::format(FMT_STRING("{:d}"), "foo"); + */ +#define FMT_STRING(s) FMT_STRING_IMPL(s, fmt::detail::compile_string, ) + +template +auto write_codepoint(OutputIt out, char prefix, uint32_t cp) -> OutputIt { + *out++ = static_cast('\\'); + *out++ = static_cast(prefix); + Char buf[width]; + fill_n(buf, width, static_cast('0')); + format_uint<4>(buf, cp, width); + return copy(buf, buf + width, out); +} + +template +auto write_escaped_cp(OutputIt out, const find_escape_result& escape) + -> OutputIt { + auto c = static_cast(escape.cp); + switch (escape.cp) { + case '\n': + *out++ = static_cast('\\'); + c = static_cast('n'); + break; + case '\r': + *out++ = static_cast('\\'); + c = static_cast('r'); + break; + case '\t': + *out++ = static_cast('\\'); + c = static_cast('t'); + break; + case '"': + FMT_FALLTHROUGH; + case '\'': + FMT_FALLTHROUGH; + case '\\': + *out++ = static_cast('\\'); + break; + default: + if (escape.cp < 0x100) return write_codepoint<2, Char>(out, 'x', escape.cp); + if (escape.cp < 0x10000) + return write_codepoint<4, Char>(out, 'u', escape.cp); + if (escape.cp < 0x110000) + return write_codepoint<8, Char>(out, 'U', escape.cp); + for (Char escape_char : basic_string_view( + escape.begin, to_unsigned(escape.end - escape.begin))) { + out = write_codepoint<2, Char>(out, 'x', + static_cast(escape_char) & 0xFF); + } + return out; + } + *out++ = c; + return out; +} + +template +auto write_escaped_string(OutputIt out, basic_string_view str) + -> OutputIt { + *out++ = static_cast('"'); + auto begin = str.begin(), end = str.end(); + do { + auto escape = find_escape(begin, end); + out = copy(begin, escape.begin, out); + begin = escape.end; + if (!begin) break; + out = write_escaped_cp(out, escape); + } while (begin != end); + *out++ = static_cast('"'); + return out; +} + +template +auto write_escaped_char(OutputIt out, Char v) -> OutputIt { + Char v_array[1] = {v}; + *out++ = static_cast('\''); + if ((needs_escape(static_cast(v)) && v != static_cast('"')) || + v == static_cast('\'')) { + out = write_escaped_cp(out, + find_escape_result{v_array, v_array + 1, + static_cast(v)}); + } else { + *out++ = v; + } + *out++ = static_cast('\''); + return out; +} + +template +FMT_CONSTEXPR auto write_char(OutputIt out, Char value, + const format_specs& specs) -> OutputIt { + bool is_debug = specs.type == presentation_type::debug; + return write_padded(out, specs, 1, [=](reserve_iterator it) { + if (is_debug) return write_escaped_char(it, value); + *it++ = value; + return it; + }); +} +template +FMT_CONSTEXPR auto write(OutputIt out, Char value, const format_specs& specs, + locale_ref loc = {}) -> OutputIt { + // char is formatted as unsigned char for consistency across platforms. + using unsigned_type = + conditional_t::value, unsigned char, unsigned>; + return check_char_specs(specs) + ? write_char(out, value, specs) + : write(out, static_cast(value), specs, loc); +} + +// Data for write_int that doesn't depend on output iterator type. It is used to +// avoid template code bloat. +template struct write_int_data { + size_t size; + size_t padding; + + FMT_CONSTEXPR write_int_data(int num_digits, unsigned prefix, + const format_specs& specs) + : size((prefix >> 24) + to_unsigned(num_digits)), padding(0) { + if (specs.align == align::numeric) { + auto width = to_unsigned(specs.width); + if (width > size) { + padding = width - size; + size = width; + } + } else if (specs.precision > num_digits) { + size = (prefix >> 24) + to_unsigned(specs.precision); + padding = to_unsigned(specs.precision - num_digits); + } + } +}; + +// Writes an integer in the format +// +// where are written by write_digits(it). +// prefix contains chars in three lower bytes and the size in the fourth byte. +template +FMT_CONSTEXPR FMT_INLINE auto write_int(OutputIt out, int num_digits, + unsigned prefix, + const format_specs& specs, + W write_digits) -> OutputIt { + // Slightly faster check for specs.width == 0 && specs.precision == -1. + if ((specs.width | (specs.precision + 1)) == 0) { + auto it = reserve(out, to_unsigned(num_digits) + (prefix >> 24)); + if (prefix != 0) { + for (unsigned p = prefix & 0xffffff; p != 0; p >>= 8) + *it++ = static_cast(p & 0xff); + } + return base_iterator(out, write_digits(it)); + } + auto data = write_int_data(num_digits, prefix, specs); + return write_padded( + out, specs, data.size, [=](reserve_iterator it) { + for (unsigned p = prefix & 0xffffff; p != 0; p >>= 8) + *it++ = static_cast(p & 0xff); + it = detail::fill_n(it, data.padding, static_cast('0')); + return write_digits(it); + }); +} + +template class digit_grouping { + private: + std::string grouping_; + std::basic_string thousands_sep_; + + struct next_state { + std::string::const_iterator group; + int pos; + }; + auto initial_state() const -> next_state { return {grouping_.begin(), 0}; } + + // Returns the next digit group separator position. + auto next(next_state& state) const -> int { + if (thousands_sep_.empty()) return max_value(); + if (state.group == grouping_.end()) return state.pos += grouping_.back(); + if (*state.group <= 0 || *state.group == max_value()) + return max_value(); + state.pos += *state.group++; + return state.pos; + } + + public: + explicit digit_grouping(locale_ref loc, bool localized = true) { + if (!localized) return; + auto sep = thousands_sep(loc); + grouping_ = sep.grouping; + if (sep.thousands_sep) thousands_sep_.assign(1, sep.thousands_sep); + } + digit_grouping(std::string grouping, std::basic_string sep) + : grouping_(std::move(grouping)), thousands_sep_(std::move(sep)) {} + + auto has_separator() const -> bool { return !thousands_sep_.empty(); } + + auto count_separators(int num_digits) const -> int { + int count = 0; + auto state = initial_state(); + while (num_digits > next(state)) ++count; + return count; + } + + // Applies grouping to digits and write the output to out. + template + auto apply(Out out, basic_string_view digits) const -> Out { + auto num_digits = static_cast(digits.size()); + auto separators = basic_memory_buffer(); + separators.push_back(0); + auto state = initial_state(); + while (int i = next(state)) { + if (i >= num_digits) break; + separators.push_back(i); + } + for (int i = 0, sep_index = static_cast(separators.size() - 1); + i < num_digits; ++i) { + if (num_digits - i == separators[sep_index]) { + out = copy(thousands_sep_.data(), + thousands_sep_.data() + thousands_sep_.size(), out); + --sep_index; + } + *out++ = static_cast(digits[to_unsigned(i)]); + } + return out; + } +}; + +FMT_CONSTEXPR inline void prefix_append(unsigned& prefix, unsigned value) { + prefix |= prefix != 0 ? value << 8 : value; + prefix += (1u + (value > 0xff ? 1 : 0)) << 24; +} + +// Writes a decimal integer with digit grouping. +template +auto write_int(OutputIt out, UInt value, unsigned prefix, + const format_specs& specs, const digit_grouping& grouping) + -> OutputIt { + static_assert(std::is_same, UInt>::value, ""); + int num_digits = 0; + auto buffer = memory_buffer(); + switch (specs.type) { + default: + FMT_ASSERT(false, ""); + FMT_FALLTHROUGH; + case presentation_type::none: + case presentation_type::dec: + num_digits = count_digits(value); + format_decimal(appender(buffer), value, num_digits); + break; + case presentation_type::hex: + if (specs.alt) + prefix_append(prefix, unsigned(specs.upper ? 'X' : 'x') << 8 | '0'); + num_digits = count_digits<4>(value); + format_uint<4, char>(appender(buffer), value, num_digits, specs.upper); + break; + case presentation_type::oct: + num_digits = count_digits<3>(value); + // Octal prefix '0' is counted as a digit, so only add it if precision + // is not greater than the number of digits. + if (specs.alt && specs.precision <= num_digits && value != 0) + prefix_append(prefix, '0'); + format_uint<3, char>(appender(buffer), value, num_digits); + break; + case presentation_type::bin: + if (specs.alt) + prefix_append(prefix, unsigned(specs.upper ? 'B' : 'b') << 8 | '0'); + num_digits = count_digits<1>(value); + format_uint<1, char>(appender(buffer), value, num_digits); + break; + case presentation_type::chr: + return write_char(out, static_cast(value), specs); + } + + unsigned size = (prefix != 0 ? prefix >> 24 : 0) + to_unsigned(num_digits) + + to_unsigned(grouping.count_separators(num_digits)); + return write_padded( + out, specs, size, size, [&](reserve_iterator it) { + for (unsigned p = prefix & 0xffffff; p != 0; p >>= 8) + *it++ = static_cast(p & 0xff); + return grouping.apply(it, string_view(buffer.data(), buffer.size())); + }); +} + +// Writes a localized value. +FMT_API auto write_loc(appender out, loc_value value, const format_specs& specs, + locale_ref loc) -> bool; +template +inline auto write_loc(OutputIt, loc_value, const format_specs&, locale_ref) + -> bool { + return false; +} + +template struct write_int_arg { + UInt abs_value; + unsigned prefix; +}; + +template +FMT_CONSTEXPR auto make_write_int_arg(T value, sign_t sign) + -> write_int_arg> { + auto prefix = 0u; + auto abs_value = static_cast>(value); + if (is_negative(value)) { + prefix = 0x01000000 | '-'; + abs_value = 0 - abs_value; + } else { + constexpr const unsigned prefixes[4] = {0, 0, 0x1000000u | '+', + 0x1000000u | ' '}; + prefix = prefixes[sign]; + } + return {abs_value, prefix}; +} + +template struct loc_writer { + basic_appender out; + const format_specs& specs; + std::basic_string sep; + std::string grouping; + std::basic_string decimal_point; + + template ::value)> + auto operator()(T value) -> bool { + auto arg = make_write_int_arg(value, specs.sign); + write_int(out, static_cast>(arg.abs_value), arg.prefix, + specs, digit_grouping(grouping, sep)); + return true; + } + + template ::value)> + auto operator()(T) -> bool { + return false; + } +}; + +template +FMT_CONSTEXPR FMT_INLINE auto write_int(OutputIt out, write_int_arg arg, + const format_specs& specs, locale_ref) + -> OutputIt { + static_assert(std::is_same>::value, ""); + auto abs_value = arg.abs_value; + auto prefix = arg.prefix; + switch (specs.type) { + default: + FMT_ASSERT(false, ""); + FMT_FALLTHROUGH; + case presentation_type::none: + case presentation_type::dec: { + int num_digits = count_digits(abs_value); + return write_int( + out, num_digits, prefix, specs, [=](reserve_iterator it) { + return format_decimal(it, abs_value, num_digits).end; + }); + } + case presentation_type::hex: { + if (specs.alt) + prefix_append(prefix, unsigned(specs.upper ? 'X' : 'x') << 8 | '0'); + int num_digits = count_digits<4>(abs_value); + return write_int( + out, num_digits, prefix, specs, [=](reserve_iterator it) { + return format_uint<4, Char>(it, abs_value, num_digits, specs.upper); + }); + } + case presentation_type::oct: { + int num_digits = count_digits<3>(abs_value); + // Octal prefix '0' is counted as a digit, so only add it if precision + // is not greater than the number of digits. + if (specs.alt && specs.precision <= num_digits && abs_value != 0) + prefix_append(prefix, '0'); + return write_int( + out, num_digits, prefix, specs, [=](reserve_iterator it) { + return format_uint<3, Char>(it, abs_value, num_digits); + }); + } + case presentation_type::bin: { + if (specs.alt) + prefix_append(prefix, unsigned(specs.upper ? 'B' : 'b') << 8 | '0'); + int num_digits = count_digits<1>(abs_value); + return write_int( + out, num_digits, prefix, specs, [=](reserve_iterator it) { + return format_uint<1, Char>(it, abs_value, num_digits); + }); + } + case presentation_type::chr: + return write_char(out, static_cast(abs_value), specs); + } +} +template +FMT_CONSTEXPR FMT_NOINLINE auto write_int_noinline(OutputIt out, + write_int_arg arg, + const format_specs& specs, + locale_ref loc) -> OutputIt { + return write_int(out, arg, specs, loc); +} +template ::value && + !std::is_same::value && + !std::is_same::value)> +FMT_CONSTEXPR FMT_INLINE auto write(basic_appender out, T value, + const format_specs& specs, locale_ref loc) + -> basic_appender { + if (specs.localized && write_loc(out, value, specs, loc)) return out; + return write_int_noinline(out, make_write_int_arg(value, specs.sign), + specs, loc); +} +// An inlined version of write used in format string compilation. +template ::value && + !std::is_same::value && + !std::is_same::value && + !std::is_same>::value)> +FMT_CONSTEXPR FMT_INLINE auto write(OutputIt out, T value, + const format_specs& specs, locale_ref loc) + -> OutputIt { + if (specs.localized && write_loc(out, value, specs, loc)) return out; + return write_int(out, make_write_int_arg(value, specs.sign), specs, + loc); +} + +// An output iterator that counts the number of objects written to it and +// discards them. +class counting_iterator { + private: + size_t count_; + + public: + using iterator_category = std::output_iterator_tag; + using difference_type = std::ptrdiff_t; + using pointer = void; + using reference = void; + FMT_UNCHECKED_ITERATOR(counting_iterator); + + struct value_type { + template FMT_CONSTEXPR void operator=(const T&) {} + }; + + FMT_CONSTEXPR counting_iterator() : count_(0) {} + + FMT_CONSTEXPR auto count() const -> size_t { return count_; } + + FMT_CONSTEXPR auto operator++() -> counting_iterator& { + ++count_; + return *this; + } + FMT_CONSTEXPR auto operator++(int) -> counting_iterator { + auto it = *this; + ++*this; + return it; + } + + FMT_CONSTEXPR friend auto operator+(counting_iterator it, difference_type n) + -> counting_iterator { + it.count_ += static_cast(n); + return it; + } + + FMT_CONSTEXPR auto operator*() const -> value_type { return {}; } +}; + +template +FMT_CONSTEXPR auto write(OutputIt out, basic_string_view s, + const format_specs& specs) -> OutputIt { + auto data = s.data(); + auto size = s.size(); + if (specs.precision >= 0 && to_unsigned(specs.precision) < size) + size = code_point_index(s, to_unsigned(specs.precision)); + bool is_debug = specs.type == presentation_type::debug; + size_t width = 0; + + if (is_debug) size = write_escaped_string(counting_iterator{}, s).count(); + + if (specs.width != 0) { + if (is_debug) + width = size; + else + width = compute_width(basic_string_view(data, size)); + } + return write_padded(out, specs, size, width, + [=](reserve_iterator it) { + if (is_debug) return write_escaped_string(it, s); + return copy(data, data + size, it); + }); +} +template +FMT_CONSTEXPR auto write(OutputIt out, + basic_string_view> s, + const format_specs& specs, locale_ref) -> OutputIt { + return write(out, s, specs); +} +template +FMT_CONSTEXPR auto write(OutputIt out, const Char* s, const format_specs& specs, + locale_ref) -> OutputIt { + if (specs.type == presentation_type::pointer) + return write_ptr(out, bit_cast(s), &specs); + if (!s) report_error("string pointer is null"); + return write(out, basic_string_view(s), specs, {}); +} + +template ::value && + !std::is_same::value && + !std::is_same::value)> +FMT_CONSTEXPR auto write(OutputIt out, T value) -> OutputIt { + auto abs_value = static_cast>(value); + bool negative = is_negative(value); + // Don't do -abs_value since it trips unsigned-integer-overflow sanitizer. + if (negative) abs_value = ~abs_value + 1; + int num_digits = count_digits(abs_value); + auto size = (negative ? 1 : 0) + static_cast(num_digits); + if (auto ptr = to_pointer(out, size)) { + if (negative) *ptr++ = static_cast('-'); + format_decimal(ptr, abs_value, num_digits); + return out; + } + if (negative) *out++ = static_cast('-'); + return format_decimal(out, abs_value, num_digits).end; +} + +// DEPRECATED! +template +FMT_CONSTEXPR auto parse_align(const Char* begin, const Char* end, + format_specs& specs) -> const Char* { + FMT_ASSERT(begin != end, ""); + auto align = align::none; + auto p = begin + code_point_length(begin); + if (end - p <= 0) p = begin; + for (;;) { + switch (to_ascii(*p)) { + case '<': + align = align::left; + break; + case '>': + align = align::right; + break; + case '^': + align = align::center; + break; + } + if (align != align::none) { + if (p != begin) { + auto c = *begin; + if (c == '}') return begin; + if (c == '{') { + report_error("invalid fill character '{'"); + return begin; + } + specs.fill = basic_string_view(begin, to_unsigned(p - begin)); + begin = p + 1; + } else { + ++begin; + } + break; + } else if (p == begin) { + break; + } + p = begin; + } + specs.align = align; + return begin; +} + +// A floating-point presentation format. +enum class float_format : unsigned char { + general, // General: exponent notation or fixed point based on magnitude. + exp, // Exponent notation with the default precision of 6, e.g. 1.2e-3. + fixed // Fixed point with the default precision of 6, e.g. 0.0012. +}; + +struct float_specs { + int precision; + float_format format : 8; + sign_t sign : 8; + bool locale : 1; + bool binary32 : 1; + bool showpoint : 1; +}; + +// DEPRECATED! +FMT_CONSTEXPR inline auto parse_float_type_spec(const format_specs& specs) + -> float_specs { + auto result = float_specs(); + result.showpoint = specs.alt; + result.locale = specs.localized; + switch (specs.type) { + default: + FMT_FALLTHROUGH; + case presentation_type::none: + result.format = float_format::general; + break; + case presentation_type::exp: + result.format = float_format::exp; + result.showpoint |= specs.precision != 0; + break; + case presentation_type::fixed: + result.format = float_format::fixed; + result.showpoint |= specs.precision != 0; + break; + case presentation_type::general: + result.format = float_format::general; + break; + } + return result; +} + +template +FMT_CONSTEXPR20 auto write_nonfinite(OutputIt out, bool isnan, + format_specs specs, sign_t sign) + -> OutputIt { + auto str = + isnan ? (specs.upper ? "NAN" : "nan") : (specs.upper ? "INF" : "inf"); + constexpr size_t str_size = 3; + auto size = str_size + (sign ? 1 : 0); + // Replace '0'-padding with space for non-finite values. + const bool is_zero_fill = + specs.fill.size() == 1 && specs.fill.template get() == '0'; + if (is_zero_fill) specs.fill = ' '; + return write_padded(out, specs, size, + [=](reserve_iterator it) { + if (sign) *it++ = detail::sign(sign); + return copy(str, str + str_size, it); + }); +} + +// A decimal floating-point number significand * pow(10, exp). +struct big_decimal_fp { + const char* significand; + int significand_size; + int exponent; +}; + +constexpr auto get_significand_size(const big_decimal_fp& f) -> int { + return f.significand_size; +} +template +inline auto get_significand_size(const dragonbox::decimal_fp& f) -> int { + return count_digits(f.significand); +} + +template +constexpr auto write_significand(OutputIt out, const char* significand, + int significand_size) -> OutputIt { + return copy(significand, significand + significand_size, out); +} +template +inline auto write_significand(OutputIt out, UInt significand, + int significand_size) -> OutputIt { + return format_decimal(out, significand, significand_size).end; +} +template +FMT_CONSTEXPR20 auto write_significand(OutputIt out, T significand, + int significand_size, int exponent, + const Grouping& grouping) -> OutputIt { + if (!grouping.has_separator()) { + out = write_significand(out, significand, significand_size); + return detail::fill_n(out, exponent, static_cast('0')); + } + auto buffer = memory_buffer(); + write_significand(appender(buffer), significand, significand_size); + detail::fill_n(appender(buffer), exponent, '0'); + return grouping.apply(out, string_view(buffer.data(), buffer.size())); +} + +template ::value)> +inline auto write_significand(Char* out, UInt significand, int significand_size, + int integral_size, Char decimal_point) -> Char* { + if (!decimal_point) + return format_decimal(out, significand, significand_size).end; + out += significand_size + 1; + Char* end = out; + int floating_size = significand_size - integral_size; + for (int i = floating_size / 2; i > 0; --i) { + out -= 2; + copy2(out, digits2(static_cast(significand % 100))); + significand /= 100; + } + if (floating_size % 2 != 0) { + *--out = static_cast('0' + significand % 10); + significand /= 10; + } + *--out = decimal_point; + format_decimal(out - integral_size, significand, integral_size); + return end; +} + +template >::value)> +inline auto write_significand(OutputIt out, UInt significand, + int significand_size, int integral_size, + Char decimal_point) -> OutputIt { + // Buffer is large enough to hold digits (digits10 + 1) and a decimal point. + Char buffer[digits10() + 2]; + auto end = write_significand(buffer, significand, significand_size, + integral_size, decimal_point); + return detail::copy_noinline(buffer, end, out); +} + +template +FMT_CONSTEXPR auto write_significand(OutputIt out, const char* significand, + int significand_size, int integral_size, + Char decimal_point) -> OutputIt { + out = detail::copy_noinline(significand, significand + integral_size, + out); + if (!decimal_point) return out; + *out++ = decimal_point; + return detail::copy_noinline(significand + integral_size, + significand + significand_size, out); +} + +template +FMT_CONSTEXPR20 auto write_significand(OutputIt out, T significand, + int significand_size, int integral_size, + Char decimal_point, + const Grouping& grouping) -> OutputIt { + if (!grouping.has_separator()) { + return write_significand(out, significand, significand_size, integral_size, + decimal_point); + } + auto buffer = basic_memory_buffer(); + write_significand(basic_appender(buffer), significand, significand_size, + integral_size, decimal_point); + grouping.apply( + out, basic_string_view(buffer.data(), to_unsigned(integral_size))); + return detail::copy_noinline(buffer.data() + integral_size, + buffer.end(), out); +} + +template > +FMT_CONSTEXPR20 auto do_write_float(OutputIt out, const DecimalFP& f, + const format_specs& specs, + float_specs fspecs, locale_ref loc) + -> OutputIt { + auto significand = f.significand; + int significand_size = get_significand_size(f); + const Char zero = static_cast('0'); + auto sign = fspecs.sign; + size_t size = to_unsigned(significand_size) + (sign ? 1 : 0); + using iterator = reserve_iterator; + + Char decimal_point = + fspecs.locale ? detail::decimal_point(loc) : static_cast('.'); + + int output_exp = f.exponent + significand_size - 1; + auto use_exp_format = [=]() { + if (fspecs.format == float_format::exp) return true; + if (fspecs.format != float_format::general) return false; + // Use the fixed notation if the exponent is in [exp_lower, exp_upper), + // e.g. 0.0001 instead of 1e-04. Otherwise use the exponent notation. + const int exp_lower = -4, exp_upper = 16; + return output_exp < exp_lower || + output_exp >= (fspecs.precision > 0 ? fspecs.precision : exp_upper); + }; + if (use_exp_format()) { + int num_zeros = 0; + if (fspecs.showpoint) { + num_zeros = fspecs.precision - significand_size; + if (num_zeros < 0) num_zeros = 0; + size += to_unsigned(num_zeros); + } else if (significand_size == 1) { + decimal_point = Char(); + } + auto abs_output_exp = output_exp >= 0 ? output_exp : -output_exp; + int exp_digits = 2; + if (abs_output_exp >= 100) exp_digits = abs_output_exp >= 1000 ? 4 : 3; + + size += to_unsigned((decimal_point ? 1 : 0) + 2 + exp_digits); + char exp_char = specs.upper ? 'E' : 'e'; + auto write = [=](iterator it) { + if (sign) *it++ = detail::sign(sign); + // Insert a decimal point after the first digit and add an exponent. + it = write_significand(it, significand, significand_size, 1, + decimal_point); + if (num_zeros > 0) it = detail::fill_n(it, num_zeros, zero); + *it++ = static_cast(exp_char); + return write_exponent(output_exp, it); + }; + return specs.width > 0 + ? write_padded(out, specs, size, write) + : base_iterator(out, write(reserve(out, size))); + } + + int exp = f.exponent + significand_size; + if (f.exponent >= 0) { + // 1234e5 -> 123400000[.0+] + size += to_unsigned(f.exponent); + int num_zeros = fspecs.precision - exp; + abort_fuzzing_if(num_zeros > 5000); + if (fspecs.showpoint) { + ++size; + if (num_zeros <= 0 && fspecs.format != float_format::fixed) num_zeros = 0; + if (num_zeros > 0) size += to_unsigned(num_zeros); + } + auto grouping = Grouping(loc, fspecs.locale); + size += to_unsigned(grouping.count_separators(exp)); + return write_padded(out, specs, size, [&](iterator it) { + if (sign) *it++ = detail::sign(sign); + it = write_significand(it, significand, significand_size, + f.exponent, grouping); + if (!fspecs.showpoint) return it; + *it++ = decimal_point; + return num_zeros > 0 ? detail::fill_n(it, num_zeros, zero) : it; + }); + } else if (exp > 0) { + // 1234e-2 -> 12.34[0+] + int num_zeros = fspecs.showpoint ? fspecs.precision - significand_size : 0; + size += 1 + to_unsigned(num_zeros > 0 ? num_zeros : 0); + auto grouping = Grouping(loc, fspecs.locale); + size += to_unsigned(grouping.count_separators(exp)); + return write_padded(out, specs, size, [&](iterator it) { + if (sign) *it++ = detail::sign(sign); + it = write_significand(it, significand, significand_size, exp, + decimal_point, grouping); + return num_zeros > 0 ? detail::fill_n(it, num_zeros, zero) : it; + }); + } + // 1234e-6 -> 0.001234 + int num_zeros = -exp; + if (significand_size == 0 && fspecs.precision >= 0 && + fspecs.precision < num_zeros) { + num_zeros = fspecs.precision; + } + bool pointy = num_zeros != 0 || significand_size != 0 || fspecs.showpoint; + size += 1 + (pointy ? 1 : 0) + to_unsigned(num_zeros); + return write_padded(out, specs, size, [&](iterator it) { + if (sign) *it++ = detail::sign(sign); + *it++ = zero; + if (!pointy) return it; + *it++ = decimal_point; + it = detail::fill_n(it, num_zeros, zero); + return write_significand(it, significand, significand_size); + }); +} + +template class fallback_digit_grouping { + public: + constexpr fallback_digit_grouping(locale_ref, bool) {} + + constexpr auto has_separator() const -> bool { return false; } + + constexpr auto count_separators(int) const -> int { return 0; } + + template + constexpr auto apply(Out out, basic_string_view) const -> Out { + return out; + } +}; + +template +FMT_CONSTEXPR20 auto write_float(OutputIt out, const DecimalFP& f, + const format_specs& specs, float_specs fspecs, + locale_ref loc) -> OutputIt { + if (is_constant_evaluated()) { + return do_write_float>(out, f, specs, fspecs, + loc); + } else { + return do_write_float(out, f, specs, fspecs, loc); + } +} + +template constexpr auto isnan(T value) -> bool { + return value != value; // std::isnan doesn't support __float128. +} + +template +struct has_isfinite : std::false_type {}; + +template +struct has_isfinite> + : std::true_type {}; + +template ::value&& + has_isfinite::value)> +FMT_CONSTEXPR20 auto isfinite(T value) -> bool { + constexpr T inf = T(std::numeric_limits::infinity()); + if (is_constant_evaluated()) + return !detail::isnan(value) && value < inf && value > -inf; + return std::isfinite(value); +} +template ::value)> +FMT_CONSTEXPR auto isfinite(T value) -> bool { + T inf = T(std::numeric_limits::infinity()); + // std::isfinite doesn't support __float128. + return !detail::isnan(value) && value < inf && value > -inf; +} + +template ::value)> +FMT_INLINE FMT_CONSTEXPR bool signbit(T value) { + if (is_constant_evaluated()) { +#ifdef __cpp_if_constexpr + if constexpr (std::numeric_limits::is_iec559) { + auto bits = detail::bit_cast(static_cast(value)); + return (bits >> (num_bits() - 1)) != 0; + } +#endif + } + return std::signbit(static_cast(value)); +} + +inline FMT_CONSTEXPR20 void adjust_precision(int& precision, int exp10) { + // Adjust fixed precision by exponent because it is relative to decimal + // point. + if (exp10 > 0 && precision > max_value() - exp10) + FMT_THROW(format_error("number is too big")); + precision += exp10; +} + +class bigint { + private: + // A bigint is stored as an array of bigits (big digits), with bigit at index + // 0 being the least significant one. + using bigit = uint32_t; + using double_bigit = uint64_t; + enum { bigits_capacity = 32 }; + basic_memory_buffer bigits_; + int exp_; + + FMT_CONSTEXPR20 auto operator[](int index) const -> bigit { + return bigits_[to_unsigned(index)]; + } + FMT_CONSTEXPR20 auto operator[](int index) -> bigit& { + return bigits_[to_unsigned(index)]; + } + + static constexpr const int bigit_bits = num_bits(); + + friend struct formatter; + + FMT_CONSTEXPR20 void subtract_bigits(int index, bigit other, bigit& borrow) { + auto result = static_cast((*this)[index]) - other - borrow; + (*this)[index] = static_cast(result); + borrow = static_cast(result >> (bigit_bits * 2 - 1)); + } + + FMT_CONSTEXPR20 void remove_leading_zeros() { + int num_bigits = static_cast(bigits_.size()) - 1; + while (num_bigits > 0 && (*this)[num_bigits] == 0) --num_bigits; + bigits_.resize(to_unsigned(num_bigits + 1)); + } + + // Computes *this -= other assuming aligned bigints and *this >= other. + FMT_CONSTEXPR20 void subtract_aligned(const bigint& other) { + FMT_ASSERT(other.exp_ >= exp_, "unaligned bigints"); + FMT_ASSERT(compare(*this, other) >= 0, ""); + bigit borrow = 0; + int i = other.exp_ - exp_; + for (size_t j = 0, n = other.bigits_.size(); j != n; ++i, ++j) + subtract_bigits(i, other.bigits_[j], borrow); + while (borrow > 0) subtract_bigits(i, 0, borrow); + remove_leading_zeros(); + } + + FMT_CONSTEXPR20 void multiply(uint32_t value) { + const double_bigit wide_value = value; + bigit carry = 0; + for (size_t i = 0, n = bigits_.size(); i < n; ++i) { + double_bigit result = bigits_[i] * wide_value + carry; + bigits_[i] = static_cast(result); + carry = static_cast(result >> bigit_bits); + } + if (carry != 0) bigits_.push_back(carry); + } + + template ::value || + std::is_same::value)> + FMT_CONSTEXPR20 void multiply(UInt value) { + using half_uint = + conditional_t::value, uint64_t, uint32_t>; + const int shift = num_bits() - bigit_bits; + const UInt lower = static_cast(value); + const UInt upper = value >> num_bits(); + UInt carry = 0; + for (size_t i = 0, n = bigits_.size(); i < n; ++i) { + UInt result = lower * bigits_[i] + static_cast(carry); + carry = (upper * bigits_[i] << shift) + (result >> bigit_bits) + + (carry >> bigit_bits); + bigits_[i] = static_cast(result); + } + while (carry != 0) { + bigits_.push_back(static_cast(carry)); + carry >>= bigit_bits; + } + } + + template ::value || + std::is_same::value)> + FMT_CONSTEXPR20 void assign(UInt n) { + size_t num_bigits = 0; + do { + bigits_[num_bigits++] = static_cast(n); + n >>= bigit_bits; + } while (n != 0); + bigits_.resize(num_bigits); + exp_ = 0; + } + + public: + FMT_CONSTEXPR20 bigint() : exp_(0) {} + explicit bigint(uint64_t n) { assign(n); } + + bigint(const bigint&) = delete; + void operator=(const bigint&) = delete; + + FMT_CONSTEXPR20 void assign(const bigint& other) { + auto size = other.bigits_.size(); + bigits_.resize(size); + auto data = other.bigits_.data(); + copy(data, data + size, bigits_.data()); + exp_ = other.exp_; + } + + template FMT_CONSTEXPR20 void operator=(Int n) { + FMT_ASSERT(n > 0, ""); + assign(uint64_or_128_t(n)); + } + + FMT_CONSTEXPR20 auto num_bigits() const -> int { + return static_cast(bigits_.size()) + exp_; + } + + FMT_NOINLINE FMT_CONSTEXPR20 auto operator<<=(int shift) -> bigint& { + FMT_ASSERT(shift >= 0, ""); + exp_ += shift / bigit_bits; + shift %= bigit_bits; + if (shift == 0) return *this; + bigit carry = 0; + for (size_t i = 0, n = bigits_.size(); i < n; ++i) { + bigit c = bigits_[i] >> (bigit_bits - shift); + bigits_[i] = (bigits_[i] << shift) + carry; + carry = c; + } + if (carry != 0) bigits_.push_back(carry); + return *this; + } + + template + FMT_CONSTEXPR20 auto operator*=(Int value) -> bigint& { + FMT_ASSERT(value > 0, ""); + multiply(uint32_or_64_or_128_t(value)); + return *this; + } + + friend FMT_CONSTEXPR20 auto compare(const bigint& lhs, const bigint& rhs) + -> int { + int num_lhs_bigits = lhs.num_bigits(), num_rhs_bigits = rhs.num_bigits(); + if (num_lhs_bigits != num_rhs_bigits) + return num_lhs_bigits > num_rhs_bigits ? 1 : -1; + int i = static_cast(lhs.bigits_.size()) - 1; + int j = static_cast(rhs.bigits_.size()) - 1; + int end = i - j; + if (end < 0) end = 0; + for (; i >= end; --i, --j) { + bigit lhs_bigit = lhs[i], rhs_bigit = rhs[j]; + if (lhs_bigit != rhs_bigit) return lhs_bigit > rhs_bigit ? 1 : -1; + } + if (i != j) return i > j ? 1 : -1; + return 0; + } + + // Returns compare(lhs1 + lhs2, rhs). + friend FMT_CONSTEXPR20 auto add_compare(const bigint& lhs1, + const bigint& lhs2, const bigint& rhs) + -> int { + auto minimum = [](int a, int b) { return a < b ? a : b; }; + auto maximum = [](int a, int b) { return a > b ? a : b; }; + int max_lhs_bigits = maximum(lhs1.num_bigits(), lhs2.num_bigits()); + int num_rhs_bigits = rhs.num_bigits(); + if (max_lhs_bigits + 1 < num_rhs_bigits) return -1; + if (max_lhs_bigits > num_rhs_bigits) return 1; + auto get_bigit = [](const bigint& n, int i) -> bigit { + return i >= n.exp_ && i < n.num_bigits() ? n[i - n.exp_] : 0; + }; + double_bigit borrow = 0; + int min_exp = minimum(minimum(lhs1.exp_, lhs2.exp_), rhs.exp_); + for (int i = num_rhs_bigits - 1; i >= min_exp; --i) { + double_bigit sum = + static_cast(get_bigit(lhs1, i)) + get_bigit(lhs2, i); + bigit rhs_bigit = get_bigit(rhs, i); + if (sum > rhs_bigit + borrow) return 1; + borrow = rhs_bigit + borrow - sum; + if (borrow > 1) return -1; + borrow <<= bigit_bits; + } + return borrow != 0 ? -1 : 0; + } + + // Assigns pow(10, exp) to this bigint. + FMT_CONSTEXPR20 void assign_pow10(int exp) { + FMT_ASSERT(exp >= 0, ""); + if (exp == 0) return *this = 1; + // Find the top bit. + int bitmask = 1; + while (exp >= bitmask) bitmask <<= 1; + bitmask >>= 1; + // pow(10, exp) = pow(5, exp) * pow(2, exp). First compute pow(5, exp) by + // repeated squaring and multiplication. + *this = 5; + bitmask >>= 1; + while (bitmask != 0) { + square(); + if ((exp & bitmask) != 0) *this *= 5; + bitmask >>= 1; + } + *this <<= exp; // Multiply by pow(2, exp) by shifting. + } + + FMT_CONSTEXPR20 void square() { + int num_bigits = static_cast(bigits_.size()); + int num_result_bigits = 2 * num_bigits; + basic_memory_buffer n(std::move(bigits_)); + bigits_.resize(to_unsigned(num_result_bigits)); + auto sum = uint128_t(); + for (int bigit_index = 0; bigit_index < num_bigits; ++bigit_index) { + // Compute bigit at position bigit_index of the result by adding + // cross-product terms n[i] * n[j] such that i + j == bigit_index. + for (int i = 0, j = bigit_index; j >= 0; ++i, --j) { + // Most terms are multiplied twice which can be optimized in the future. + sum += static_cast(n[i]) * n[j]; + } + (*this)[bigit_index] = static_cast(sum); + sum >>= num_bits(); // Compute the carry. + } + // Do the same for the top half. + for (int bigit_index = num_bigits; bigit_index < num_result_bigits; + ++bigit_index) { + for (int j = num_bigits - 1, i = bigit_index - j; i < num_bigits;) + sum += static_cast(n[i++]) * n[j--]; + (*this)[bigit_index] = static_cast(sum); + sum >>= num_bits(); + } + remove_leading_zeros(); + exp_ *= 2; + } + + // If this bigint has a bigger exponent than other, adds trailing zero to make + // exponents equal. This simplifies some operations such as subtraction. + FMT_CONSTEXPR20 void align(const bigint& other) { + int exp_difference = exp_ - other.exp_; + if (exp_difference <= 0) return; + int num_bigits = static_cast(bigits_.size()); + bigits_.resize(to_unsigned(num_bigits + exp_difference)); + for (int i = num_bigits - 1, j = i + exp_difference; i >= 0; --i, --j) + bigits_[j] = bigits_[i]; + memset(bigits_.data(), 0, to_unsigned(exp_difference) * sizeof(bigit)); + exp_ -= exp_difference; + } + + // Divides this bignum by divisor, assigning the remainder to this and + // returning the quotient. + FMT_CONSTEXPR20 auto divmod_assign(const bigint& divisor) -> int { + FMT_ASSERT(this != &divisor, ""); + if (compare(*this, divisor) < 0) return 0; + FMT_ASSERT(divisor.bigits_[divisor.bigits_.size() - 1u] != 0, ""); + align(divisor); + int quotient = 0; + do { + subtract_aligned(divisor); + ++quotient; + } while (compare(*this, divisor) >= 0); + return quotient; + } +}; + +// format_dragon flags. +enum dragon { + predecessor_closer = 1, + fixup = 2, // Run fixup to correct exp10 which can be off by one. + fixed = 4, +}; + +// Formats a floating-point number using a variation of the Fixed-Precision +// Positive Floating-Point Printout ((FPP)^2) algorithm by Steele & White: +// https://fmt.dev/papers/p372-steele.pdf. +FMT_CONSTEXPR20 inline void format_dragon(basic_fp value, + unsigned flags, int num_digits, + buffer& buf, int& exp10) { + bigint numerator; // 2 * R in (FPP)^2. + bigint denominator; // 2 * S in (FPP)^2. + // lower and upper are differences between value and corresponding boundaries. + bigint lower; // (M^- in (FPP)^2). + bigint upper_store; // upper's value if different from lower. + bigint* upper = nullptr; // (M^+ in (FPP)^2). + // Shift numerator and denominator by an extra bit or two (if lower boundary + // is closer) to make lower and upper integers. This eliminates multiplication + // by 2 during later computations. + bool is_predecessor_closer = (flags & dragon::predecessor_closer) != 0; + int shift = is_predecessor_closer ? 2 : 1; + if (value.e >= 0) { + numerator = value.f; + numerator <<= value.e + shift; + lower = 1; + lower <<= value.e; + if (is_predecessor_closer) { + upper_store = 1; + upper_store <<= value.e + 1; + upper = &upper_store; + } + denominator.assign_pow10(exp10); + denominator <<= shift; + } else if (exp10 < 0) { + numerator.assign_pow10(-exp10); + lower.assign(numerator); + if (is_predecessor_closer) { + upper_store.assign(numerator); + upper_store <<= 1; + upper = &upper_store; + } + numerator *= value.f; + numerator <<= shift; + denominator = 1; + denominator <<= shift - value.e; + } else { + numerator = value.f; + numerator <<= shift; + denominator.assign_pow10(exp10); + denominator <<= shift - value.e; + lower = 1; + if (is_predecessor_closer) { + upper_store = 1ULL << 1; + upper = &upper_store; + } + } + int even = static_cast((value.f & 1) == 0); + if (!upper) upper = &lower; + bool shortest = num_digits < 0; + if ((flags & dragon::fixup) != 0) { + if (add_compare(numerator, *upper, denominator) + even <= 0) { + --exp10; + numerator *= 10; + if (num_digits < 0) { + lower *= 10; + if (upper != &lower) *upper *= 10; + } + } + if ((flags & dragon::fixed) != 0) adjust_precision(num_digits, exp10 + 1); + } + // Invariant: value == (numerator / denominator) * pow(10, exp10). + if (shortest) { + // Generate the shortest representation. + num_digits = 0; + char* data = buf.data(); + for (;;) { + int digit = numerator.divmod_assign(denominator); + bool low = compare(numerator, lower) - even < 0; // numerator <[=] lower. + // numerator + upper >[=] pow10: + bool high = add_compare(numerator, *upper, denominator) + even > 0; + data[num_digits++] = static_cast('0' + digit); + if (low || high) { + if (!low) { + ++data[num_digits - 1]; + } else if (high) { + int result = add_compare(numerator, numerator, denominator); + // Round half to even. + if (result > 0 || (result == 0 && (digit % 2) != 0)) + ++data[num_digits - 1]; + } + buf.try_resize(to_unsigned(num_digits)); + exp10 -= num_digits - 1; + return; + } + numerator *= 10; + lower *= 10; + if (upper != &lower) *upper *= 10; + } + } + // Generate the given number of digits. + exp10 -= num_digits - 1; + if (num_digits <= 0) { + auto digit = '0'; + if (num_digits == 0) { + denominator *= 10; + digit = add_compare(numerator, numerator, denominator) > 0 ? '1' : '0'; + } + buf.push_back(digit); + return; + } + buf.try_resize(to_unsigned(num_digits)); + for (int i = 0; i < num_digits - 1; ++i) { + int digit = numerator.divmod_assign(denominator); + buf[i] = static_cast('0' + digit); + numerator *= 10; + } + int digit = numerator.divmod_assign(denominator); + auto result = add_compare(numerator, numerator, denominator); + if (result > 0 || (result == 0 && (digit % 2) != 0)) { + if (digit == 9) { + const auto overflow = '0' + 10; + buf[num_digits - 1] = overflow; + // Propagate the carry. + for (int i = num_digits - 1; i > 0 && buf[i] == overflow; --i) { + buf[i] = '0'; + ++buf[i - 1]; + } + if (buf[0] == overflow) { + buf[0] = '1'; + if ((flags & dragon::fixed) != 0) + buf.push_back('0'); + else + ++exp10; + } + return; + } + ++digit; + } + buf[num_digits - 1] = static_cast('0' + digit); +} + +// Formats a floating-point number using the hexfloat format. +template ::value)> +FMT_CONSTEXPR20 void format_hexfloat(Float value, format_specs specs, + buffer& buf) { + // float is passed as double to reduce the number of instantiations and to + // simplify implementation. + static_assert(!std::is_same::value, ""); + + using info = dragonbox::float_info; + + // Assume Float is in the format [sign][exponent][significand]. + using carrier_uint = typename info::carrier_uint; + + constexpr auto num_float_significand_bits = + detail::num_significand_bits(); + + basic_fp f(value); + f.e += num_float_significand_bits; + if (!has_implicit_bit()) --f.e; + + constexpr auto num_fraction_bits = + num_float_significand_bits + (has_implicit_bit() ? 1 : 0); + constexpr auto num_xdigits = (num_fraction_bits + 3) / 4; + + constexpr auto leading_shift = ((num_xdigits - 1) * 4); + const auto leading_mask = carrier_uint(0xF) << leading_shift; + const auto leading_xdigit = + static_cast((f.f & leading_mask) >> leading_shift); + if (leading_xdigit > 1) f.e -= (32 - countl_zero(leading_xdigit) - 1); + + int print_xdigits = num_xdigits - 1; + if (specs.precision >= 0 && print_xdigits > specs.precision) { + const int shift = ((print_xdigits - specs.precision - 1) * 4); + const auto mask = carrier_uint(0xF) << shift; + const auto v = static_cast((f.f & mask) >> shift); + + if (v >= 8) { + const auto inc = carrier_uint(1) << (shift + 4); + f.f += inc; + f.f &= ~(inc - 1); + } + + // Check long double overflow + if (!has_implicit_bit()) { + const auto implicit_bit = carrier_uint(1) << num_float_significand_bits; + if ((f.f & implicit_bit) == implicit_bit) { + f.f >>= 4; + f.e += 4; + } + } + + print_xdigits = specs.precision; + } + + char xdigits[num_bits() / 4]; + detail::fill_n(xdigits, sizeof(xdigits), '0'); + format_uint<4>(xdigits, f.f, num_xdigits, specs.upper); + + // Remove zero tail + while (print_xdigits > 0 && xdigits[print_xdigits] == '0') --print_xdigits; + + buf.push_back('0'); + buf.push_back(specs.upper ? 'X' : 'x'); + buf.push_back(xdigits[0]); + if (specs.alt || print_xdigits > 0 || print_xdigits < specs.precision) + buf.push_back('.'); + buf.append(xdigits + 1, xdigits + 1 + print_xdigits); + for (; print_xdigits < specs.precision; ++print_xdigits) buf.push_back('0'); + + buf.push_back(specs.upper ? 'P' : 'p'); + + uint32_t abs_e; + if (f.e < 0) { + buf.push_back('-'); + abs_e = static_cast(-f.e); + } else { + buf.push_back('+'); + abs_e = static_cast(f.e); + } + format_decimal(appender(buf), abs_e, detail::count_digits(abs_e)); +} + +template ::value)> +FMT_CONSTEXPR20 void format_hexfloat(Float value, format_specs specs, + buffer& buf) { + format_hexfloat(static_cast(value), specs, buf); +} + +constexpr auto fractional_part_rounding_thresholds(int index) -> uint32_t { + // For checking rounding thresholds. + // The kth entry is chosen to be the smallest integer such that the + // upper 32-bits of 10^(k+1) times it is strictly bigger than 5 * 10^k. + // It is equal to ceil(2^31 + 2^32/10^(k + 1)). + // These are stored in a string literal because we cannot have static arrays + // in constexpr functions and non-static ones are poorly optimized. + return U"\x9999999a\x828f5c29\x80418938\x80068db9\x8000a7c6\x800010c7" + U"\x800001ae\x8000002b"[index]; +} + +template +FMT_CONSTEXPR20 auto format_float(Float value, int precision, float_specs specs, + buffer& buf) -> int { + // float is passed as double to reduce the number of instantiations. + static_assert(!std::is_same::value, ""); + FMT_ASSERT(value >= 0, "value is negative"); + auto converted_value = convert_float(value); + + const bool fixed = specs.format == float_format::fixed; + if (value <= 0) { // <= instead of == to silence a warning. + if (precision <= 0 || !fixed) { + buf.push_back('0'); + return 0; + } + buf.try_resize(to_unsigned(precision)); + fill_n(buf.data(), precision, '0'); + return -precision; + } + + int exp = 0; + bool use_dragon = true; + unsigned dragon_flags = 0; + if (!is_fast_float() || is_constant_evaluated()) { + const auto inv_log2_10 = 0.3010299956639812; // 1 / log2(10) + using info = dragonbox::float_info; + const auto f = basic_fp(converted_value); + // Compute exp, an approximate power of 10, such that + // 10^(exp - 1) <= value < 10^exp or 10^exp <= value < 10^(exp + 1). + // This is based on log10(value) == log2(value) / log2(10) and approximation + // of log2(value) by e + num_fraction_bits idea from double-conversion. + auto e = (f.e + count_digits<1>(f.f) - 1) * inv_log2_10 - 1e-10; + exp = static_cast(e); + if (e > exp) ++exp; // Compute ceil. + dragon_flags = dragon::fixup; + } else if (precision < 0) { + // Use Dragonbox for the shortest format. + if (specs.binary32) { + auto dec = dragonbox::to_decimal(static_cast(value)); + write(appender(buf), dec.significand); + return dec.exponent; + } + auto dec = dragonbox::to_decimal(static_cast(value)); + write(appender(buf), dec.significand); + return dec.exponent; + } else { + // Extract significand bits and exponent bits. + using info = dragonbox::float_info; + auto br = bit_cast(static_cast(value)); + + const uint64_t significand_mask = + (static_cast(1) << num_significand_bits()) - 1; + uint64_t significand = (br & significand_mask); + int exponent = static_cast((br & exponent_mask()) >> + num_significand_bits()); + + if (exponent != 0) { // Check if normal. + exponent -= exponent_bias() + num_significand_bits(); + significand |= + (static_cast(1) << num_significand_bits()); + significand <<= 1; + } else { + // Normalize subnormal inputs. + FMT_ASSERT(significand != 0, "zeros should not appear here"); + int shift = countl_zero(significand); + FMT_ASSERT(shift >= num_bits() - num_significand_bits(), + ""); + shift -= (num_bits() - num_significand_bits() - 2); + exponent = (std::numeric_limits::min_exponent - + num_significand_bits()) - + shift; + significand <<= shift; + } + + // Compute the first several nonzero decimal significand digits. + // We call the number we get the first segment. + const int k = info::kappa - dragonbox::floor_log10_pow2(exponent); + exp = -k; + const int beta = exponent + dragonbox::floor_log2_pow10(k); + uint64_t first_segment; + bool has_more_segments; + int digits_in_the_first_segment; + { + const auto r = dragonbox::umul192_upper128( + significand << beta, dragonbox::get_cached_power(k)); + first_segment = r.high(); + has_more_segments = r.low() != 0; + + // The first segment can have 18 ~ 19 digits. + if (first_segment >= 1000000000000000000ULL) { + digits_in_the_first_segment = 19; + } else { + // When it is of 18-digits, we align it to 19-digits by adding a bogus + // zero at the end. + digits_in_the_first_segment = 18; + first_segment *= 10; + } + } + + // Compute the actual number of decimal digits to print. + if (fixed) adjust_precision(precision, exp + digits_in_the_first_segment); + + // Use Dragon4 only when there might be not enough digits in the first + // segment. + if (digits_in_the_first_segment > precision) { + use_dragon = false; + + if (precision <= 0) { + exp += digits_in_the_first_segment; + + if (precision < 0) { + // Nothing to do, since all we have are just leading zeros. + buf.try_resize(0); + } else { + // We may need to round-up. + buf.try_resize(1); + if ((first_segment | static_cast(has_more_segments)) > + 5000000000000000000ULL) { + buf[0] = '1'; + } else { + buf[0] = '0'; + } + } + } // precision <= 0 + else { + exp += digits_in_the_first_segment - precision; + + // When precision > 0, we divide the first segment into three + // subsegments, each with 9, 9, and 0 ~ 1 digits so that each fits + // in 32-bits which usually allows faster calculation than in + // 64-bits. Since some compiler (e.g. MSVC) doesn't know how to optimize + // division-by-constant for large 64-bit divisors, we do it here + // manually. The magic number 7922816251426433760 below is equal to + // ceil(2^(64+32) / 10^10). + const uint32_t first_subsegment = static_cast( + dragonbox::umul128_upper64(first_segment, 7922816251426433760ULL) >> + 32); + const uint64_t second_third_subsegments = + first_segment - first_subsegment * 10000000000ULL; + + uint64_t prod; + uint32_t digits; + bool should_round_up; + int number_of_digits_to_print = precision > 9 ? 9 : precision; + + // Print a 9-digits subsegment, either the first or the second. + auto print_subsegment = [&](uint32_t subsegment, char* buffer) { + int number_of_digits_printed = 0; + + // If we want to print an odd number of digits from the subsegment, + if ((number_of_digits_to_print & 1) != 0) { + // Convert to 64-bit fixed-point fractional form with 1-digit + // integer part. The magic number 720575941 is a good enough + // approximation of 2^(32 + 24) / 10^8; see + // https://jk-jeon.github.io/posts/2022/12/fixed-precision-formatting/#fixed-length-case + // for details. + prod = ((subsegment * static_cast(720575941)) >> 24) + 1; + digits = static_cast(prod >> 32); + *buffer = static_cast('0' + digits); + number_of_digits_printed++; + } + // If we want to print an even number of digits from the + // first_subsegment, + else { + // Convert to 64-bit fixed-point fractional form with 2-digits + // integer part. The magic number 450359963 is a good enough + // approximation of 2^(32 + 20) / 10^7; see + // https://jk-jeon.github.io/posts/2022/12/fixed-precision-formatting/#fixed-length-case + // for details. + prod = ((subsegment * static_cast(450359963)) >> 20) + 1; + digits = static_cast(prod >> 32); + copy2(buffer, digits2(digits)); + number_of_digits_printed += 2; + } + + // Print all digit pairs. + while (number_of_digits_printed < number_of_digits_to_print) { + prod = static_cast(prod) * static_cast(100); + digits = static_cast(prod >> 32); + copy2(buffer + number_of_digits_printed, digits2(digits)); + number_of_digits_printed += 2; + } + }; + + // Print first subsegment. + print_subsegment(first_subsegment, buf.data()); + + // Perform rounding if the first subsegment is the last subsegment to + // print. + if (precision <= 9) { + // Rounding inside the subsegment. + // We round-up if: + // - either the fractional part is strictly larger than 1/2, or + // - the fractional part is exactly 1/2 and the last digit is odd. + // We rely on the following observations: + // - If fractional_part >= threshold, then the fractional part is + // strictly larger than 1/2. + // - If the MSB of fractional_part is set, then the fractional part + // must be at least 1/2. + // - When the MSB of fractional_part is set, either + // second_third_subsegments being nonzero or has_more_segments + // being true means there are further digits not printed, so the + // fractional part is strictly larger than 1/2. + if (precision < 9) { + uint32_t fractional_part = static_cast(prod); + should_round_up = + fractional_part >= fractional_part_rounding_thresholds( + 8 - number_of_digits_to_print) || + ((fractional_part >> 31) & + ((digits & 1) | (second_third_subsegments != 0) | + has_more_segments)) != 0; + } + // Rounding at the subsegment boundary. + // In this case, the fractional part is at least 1/2 if and only if + // second_third_subsegments >= 5000000000ULL, and is strictly larger + // than 1/2 if we further have either second_third_subsegments > + // 5000000000ULL or has_more_segments == true. + else { + should_round_up = second_third_subsegments > 5000000000ULL || + (second_third_subsegments == 5000000000ULL && + ((digits & 1) != 0 || has_more_segments)); + } + } + // Otherwise, print the second subsegment. + else { + // Compilers are not aware of how to leverage the maximum value of + // second_third_subsegments to find out a better magic number which + // allows us to eliminate an additional shift. 1844674407370955162 = + // ceil(2^64/10) < ceil(2^64*(10^9/(10^10 - 1))). + const uint32_t second_subsegment = + static_cast(dragonbox::umul128_upper64( + second_third_subsegments, 1844674407370955162ULL)); + const uint32_t third_subsegment = + static_cast(second_third_subsegments) - + second_subsegment * 10; + + number_of_digits_to_print = precision - 9; + print_subsegment(second_subsegment, buf.data() + 9); + + // Rounding inside the subsegment. + if (precision < 18) { + // The condition third_subsegment != 0 implies that the segment was + // of 19 digits, so in this case the third segment should be + // consisting of a genuine digit from the input. + uint32_t fractional_part = static_cast(prod); + should_round_up = + fractional_part >= fractional_part_rounding_thresholds( + 8 - number_of_digits_to_print) || + ((fractional_part >> 31) & + ((digits & 1) | (third_subsegment != 0) | + has_more_segments)) != 0; + } + // Rounding at the subsegment boundary. + else { + // In this case, the segment must be of 19 digits, thus + // the third subsegment should be consisting of a genuine digit from + // the input. + should_round_up = third_subsegment > 5 || + (third_subsegment == 5 && + ((digits & 1) != 0 || has_more_segments)); + } + } + + // Round-up if necessary. + if (should_round_up) { + ++buf[precision - 1]; + for (int i = precision - 1; i > 0 && buf[i] > '9'; --i) { + buf[i] = '0'; + ++buf[i - 1]; + } + if (buf[0] > '9') { + buf[0] = '1'; + if (fixed) + buf[precision++] = '0'; + else + ++exp; + } + } + buf.try_resize(to_unsigned(precision)); + } + } // if (digits_in_the_first_segment > precision) + else { + // Adjust the exponent for its use in Dragon4. + exp += digits_in_the_first_segment - 1; + } + } + if (use_dragon) { + auto f = basic_fp(); + bool is_predecessor_closer = specs.binary32 + ? f.assign(static_cast(value)) + : f.assign(converted_value); + if (is_predecessor_closer) dragon_flags |= dragon::predecessor_closer; + if (fixed) dragon_flags |= dragon::fixed; + // Limit precision to the maximum possible number of significant digits in + // an IEEE754 double because we don't need to generate zeros. + const int max_double_digits = 767; + if (precision > max_double_digits) precision = max_double_digits; + format_dragon(f, dragon_flags, precision, buf, exp); + } + if (!fixed && !specs.showpoint) { + // Remove trailing zeros. + auto num_digits = buf.size(); + while (num_digits > 0 && buf[num_digits - 1] == '0') { + --num_digits; + ++exp; + } + buf.try_resize(num_digits); + } + return exp; +} + +template +FMT_CONSTEXPR20 auto write_float(OutputIt out, T value, format_specs specs, + locale_ref loc) -> OutputIt { + sign_t sign = specs.sign; + if (detail::signbit(value)) { // value < 0 is false for NaN so use signbit. + sign = sign::minus; + value = -value; + } else if (sign == sign::minus) { + sign = sign::none; + } + + if (!detail::isfinite(value)) + return write_nonfinite(out, detail::isnan(value), specs, sign); + + if (specs.align == align::numeric && sign) { + auto it = reserve(out, 1); + *it++ = detail::sign(sign); + out = base_iterator(out, it); + sign = sign::none; + if (specs.width != 0) --specs.width; + } + + memory_buffer buffer; + if (specs.type == presentation_type::hexfloat) { + if (sign) buffer.push_back(detail::sign(sign)); + format_hexfloat(convert_float(value), specs, buffer); + return write_bytes(out, {buffer.data(), buffer.size()}, + specs); + } + + int precision = specs.precision >= 0 || specs.type == presentation_type::none + ? specs.precision + : 6; + if (specs.type == presentation_type::exp) { + if (precision == max_value()) + report_error("number is too big"); + else + ++precision; + } else if (specs.type != presentation_type::fixed && precision == 0) { + precision = 1; + } + float_specs fspecs = parse_float_type_spec(specs); + fspecs.sign = sign; + if (const_check(std::is_same())) fspecs.binary32 = true; + int exp = format_float(convert_float(value), precision, fspecs, buffer); + fspecs.precision = precision; + auto f = big_decimal_fp{buffer.data(), static_cast(buffer.size()), exp}; + return write_float(out, f, specs, fspecs, loc); +} + +template ::value)> +FMT_CONSTEXPR20 auto write(OutputIt out, T value, format_specs specs, + locale_ref loc = {}) -> OutputIt { + if (const_check(!is_supported_floating_point(value))) return out; + return specs.localized && write_loc(out, value, specs, loc) + ? out + : write_float(out, value, specs, loc); +} + +template ::value)> +FMT_CONSTEXPR20 auto write(OutputIt out, T value) -> OutputIt { + if (is_constant_evaluated()) return write(out, value, format_specs()); + if (const_check(!is_supported_floating_point(value))) return out; + + auto sign = sign_t::none; + if (detail::signbit(value)) { + sign = sign::minus; + value = -value; + } + + constexpr auto specs = format_specs(); + using floaty = conditional_t::value, double, T>; + using floaty_uint = typename dragonbox::float_info::carrier_uint; + floaty_uint mask = exponent_mask(); + if ((bit_cast(value) & mask) == mask) + return write_nonfinite(out, std::isnan(value), specs, sign); + + auto fspecs = float_specs(); + fspecs.sign = sign; + auto dec = dragonbox::to_decimal(static_cast(value)); + return write_float(out, dec, specs, fspecs, {}); +} + +template ::value && + !is_fast_float::value)> +inline auto write(OutputIt out, T value) -> OutputIt { + return write(out, value, format_specs()); +} + +template +auto write(OutputIt out, monostate, format_specs = {}, locale_ref = {}) + -> OutputIt { + FMT_ASSERT(false, ""); + return out; +} + +template +FMT_CONSTEXPR auto write(OutputIt out, basic_string_view value) + -> OutputIt { + return copy_noinline(value.begin(), value.end(), out); +} + +template ::value)> +constexpr auto write(OutputIt out, const T& value) -> OutputIt { + return write(out, to_string_view(value)); +} + +// FMT_ENABLE_IF() condition separated to workaround an MSVC bug. +template < + typename Char, typename OutputIt, typename T, + bool check = + std::is_enum::value && !std::is_same::value && + mapped_type_constant>::value != + type::custom_type, + FMT_ENABLE_IF(check)> +FMT_CONSTEXPR auto write(OutputIt out, T value) -> OutputIt { + return write(out, static_cast>(value)); +} + +template ::value)> +FMT_CONSTEXPR auto write(OutputIt out, T value, const format_specs& specs = {}, + locale_ref = {}) -> OutputIt { + return specs.type != presentation_type::none && + specs.type != presentation_type::string + ? write(out, value ? 1 : 0, specs, {}) + : write_bytes(out, value ? "true" : "false", specs); +} + +template +FMT_CONSTEXPR auto write(OutputIt out, Char value) -> OutputIt { + auto it = reserve(out, 1); + *it++ = value; + return base_iterator(out, it); +} + +template +FMT_CONSTEXPR20 auto write(OutputIt out, const Char* value) -> OutputIt { + if (value) return write(out, basic_string_view(value)); + report_error("string pointer is null"); + return out; +} + +template ::value)> +auto write(OutputIt out, const T* value, const format_specs& specs = {}, + locale_ref = {}) -> OutputIt { + return write_ptr(out, bit_cast(value), &specs); +} + +// A write overload that handles implicit conversions. +template > +FMT_CONSTEXPR auto write(OutputIt out, const T& value) -> enable_if_t< + std::is_class::value && !has_to_string_view::value && + !is_floating_point::value && !std::is_same::value && + !std::is_same().map( + value))>>::value, + OutputIt> { + return write(out, arg_mapper().map(value)); +} + +template > +FMT_CONSTEXPR auto write(OutputIt out, const T& value) + -> enable_if_t::value == + type::custom_type && + !std::is_fundamental::value, + OutputIt> { + auto formatter = typename Context::template formatter_type(); + auto parse_ctx = typename Context::parse_context_type({}); + formatter.parse(parse_ctx); + auto ctx = Context(out, {}, {}); + return formatter.format(value, ctx); +} + +// An argument visitor that formats the argument and writes it via the output +// iterator. It's a class and not a generic lambda for compatibility with C++11. +template struct default_arg_formatter { + using iterator = basic_appender; + using context = buffered_context; + + iterator out; + basic_format_args args; + locale_ref loc; + + template auto operator()(T value) -> iterator { + return write(out, value); + } + auto operator()(typename basic_format_arg::handle h) -> iterator { + basic_format_parse_context parse_ctx({}); + context format_ctx(out, args, loc); + h.format(parse_ctx, format_ctx); + return format_ctx.out(); + } +}; + +template struct arg_formatter { + using iterator = basic_appender; + using context = buffered_context; + + iterator out; + const format_specs& specs; + locale_ref locale; + + template + FMT_CONSTEXPR FMT_INLINE auto operator()(T value) -> iterator { + return detail::write(out, value, specs, locale); + } + auto operator()(typename basic_format_arg::handle) -> iterator { + // User-defined types are handled separately because they require access + // to the parse context. + return out; + } +}; + +struct width_checker { + template ::value)> + FMT_CONSTEXPR auto operator()(T value) -> unsigned long long { + if (is_negative(value)) report_error("negative width"); + return static_cast(value); + } + + template ::value)> + FMT_CONSTEXPR auto operator()(T) -> unsigned long long { + report_error("width is not integer"); + return 0; + } +}; + +struct precision_checker { + template ::value)> + FMT_CONSTEXPR auto operator()(T value) -> unsigned long long { + if (is_negative(value)) report_error("negative precision"); + return static_cast(value); + } + + template ::value)> + FMT_CONSTEXPR auto operator()(T) -> unsigned long long { + report_error("precision is not integer"); + return 0; + } +}; + +template +FMT_CONSTEXPR auto get_dynamic_spec(FormatArg arg) -> int { + unsigned long long value = arg.visit(Handler()); + if (value > to_unsigned(max_value())) report_error("number is too big"); + return static_cast(value); +} + +template +FMT_CONSTEXPR auto get_arg(Context& ctx, ID id) -> decltype(ctx.arg(id)) { + auto arg = ctx.arg(id); + if (!arg) report_error("argument not found"); + return arg; +} + +template +FMT_CONSTEXPR void handle_dynamic_spec(int& value, + arg_ref ref, + Context& ctx) { + switch (ref.kind) { + case arg_id_kind::none: + break; + case arg_id_kind::index: + value = detail::get_dynamic_spec(get_arg(ctx, ref.val.index)); + break; + case arg_id_kind::name: + value = detail::get_dynamic_spec(get_arg(ctx, ref.val.name)); + break; + } +} + +#if FMT_USE_USER_DEFINED_LITERALS +# if FMT_USE_NONTYPE_TEMPLATE_ARGS +template Str> +struct statically_named_arg : view { + static constexpr auto name = Str.data; + + const T& value; + statically_named_arg(const T& v) : value(v) {} +}; + +template Str> +struct is_named_arg> : std::true_type {}; + +template Str> +struct is_statically_named_arg> + : std::true_type {}; + +template Str> +struct udl_arg { + template auto operator=(T&& value) const { + return statically_named_arg(std::forward(value)); + } +}; +# else +template struct udl_arg { + const Char* str; + + template auto operator=(T&& value) const -> named_arg { + return {str, std::forward(value)}; + } +}; +# endif +#endif // FMT_USE_USER_DEFINED_LITERALS + +template +auto vformat(const Locale& loc, basic_string_view fmt, + typename detail::vformat_args::type args) + -> std::basic_string { + auto buf = basic_memory_buffer(); + detail::vformat_to(buf, fmt, args, detail::locale_ref(loc)); + return {buf.data(), buf.size()}; +} + +using format_func = void (*)(detail::buffer&, int, const char*); + +FMT_API void format_error_code(buffer& out, int error_code, + string_view message) noexcept; + +using fmt::report_error; +FMT_API void report_error(format_func func, int error_code, + const char* message) noexcept; +} // namespace detail + +FMT_BEGIN_EXPORT +FMT_API auto vsystem_error(int error_code, string_view format_str, + format_args args) -> std::system_error; + +/** + * Constructs `std::system_error` with a message formatted with + * `fmt::format(fmt, args...)`. + * `error_code` is a system error code as given by `errno`. + * + * **Example**: + * + * // This throws std::system_error with the description + * // cannot open file 'madeup': No such file or directory + * // or similar (system message may vary). + * const char* filename = "madeup"; + * std::FILE* file = std::fopen(filename, "r"); + * if (!file) + * throw fmt::system_error(errno, "cannot open file '{}'", filename); + */ +template +auto system_error(int error_code, format_string fmt, T&&... args) + -> std::system_error { + return vsystem_error(error_code, fmt, fmt::make_format_args(args...)); +} + +/** + * Formats an error message for an error returned by an operating system or a + * language runtime, for example a file opening error, and writes it to `out`. + * The format is the same as the one used by `std::system_error(ec, message)` + * where `ec` is `std::error_code(error_code, std::generic_category())`. + * It is implementation-defined but normally looks like: + * + * : + * + * where `` is the passed message and `` is the system + * message corresponding to the error code. + * `error_code` is a system error code as given by `errno`. + */ +FMT_API void format_system_error(detail::buffer& out, int error_code, + const char* message) noexcept; + +// Reports a system error without throwing an exception. +// Can be used to report errors from destructors. +FMT_API void report_system_error(int error_code, const char* message) noexcept; + +/// A fast integer formatter. +class format_int { + private: + // Buffer should be large enough to hold all digits (digits10 + 1), + // a sign and a null character. + enum { buffer_size = std::numeric_limits::digits10 + 3 }; + mutable char buffer_[buffer_size]; + char* str_; + + template + FMT_CONSTEXPR20 auto format_unsigned(UInt value) -> char* { + auto n = static_cast>(value); + return detail::format_decimal(buffer_, n, buffer_size - 1).begin; + } + + template + FMT_CONSTEXPR20 auto format_signed(Int value) -> char* { + auto abs_value = static_cast>(value); + bool negative = value < 0; + if (negative) abs_value = 0 - abs_value; + auto begin = format_unsigned(abs_value); + if (negative) *--begin = '-'; + return begin; + } + + public: + explicit FMT_CONSTEXPR20 format_int(int value) : str_(format_signed(value)) {} + explicit FMT_CONSTEXPR20 format_int(long value) + : str_(format_signed(value)) {} + explicit FMT_CONSTEXPR20 format_int(long long value) + : str_(format_signed(value)) {} + explicit FMT_CONSTEXPR20 format_int(unsigned value) + : str_(format_unsigned(value)) {} + explicit FMT_CONSTEXPR20 format_int(unsigned long value) + : str_(format_unsigned(value)) {} + explicit FMT_CONSTEXPR20 format_int(unsigned long long value) + : str_(format_unsigned(value)) {} + + /// Returns the number of characters written to the output buffer. + FMT_CONSTEXPR20 auto size() const -> size_t { + return detail::to_unsigned(buffer_ - str_ + buffer_size - 1); + } + + /// Returns a pointer to the output buffer content. No terminating null + /// character is appended. + FMT_CONSTEXPR20 auto data() const -> const char* { return str_; } + + /// Returns a pointer to the output buffer content with terminating null + /// character appended. + FMT_CONSTEXPR20 auto c_str() const -> const char* { + buffer_[buffer_size - 1] = '\0'; + return str_; + } + + /// Returns the content of the output buffer as an `std::string`. + auto str() const -> std::string { return std::string(str_, size()); } +}; + +template +struct formatter::value>> + : formatter, Char> { + template + auto format(const T& value, FormatContext& ctx) const -> decltype(ctx.out()) { + auto&& val = format_as(value); // Make an lvalue reference for format. + return formatter, Char>::format(val, ctx); + } +}; + +#define FMT_FORMAT_AS(Type, Base) \ + template \ + struct formatter : formatter { \ + template \ + auto format(Type value, FormatContext& ctx) const -> decltype(ctx.out()) { \ + return formatter::format(value, ctx); \ + } \ + } + +FMT_FORMAT_AS(signed char, int); +FMT_FORMAT_AS(unsigned char, unsigned); +FMT_FORMAT_AS(short, int); +FMT_FORMAT_AS(unsigned short, unsigned); +FMT_FORMAT_AS(long, detail::long_type); +FMT_FORMAT_AS(unsigned long, detail::ulong_type); +FMT_FORMAT_AS(Char*, const Char*); +FMT_FORMAT_AS(std::nullptr_t, const void*); +FMT_FORMAT_AS(detail::std_string_view, basic_string_view); +FMT_FORMAT_AS(void*, const void*); + +template +class formatter, Char> + : public formatter, Char> {}; + +template +struct formatter : formatter, Char> {}; + +/** + * Converts `p` to `const void*` for pointer formatting. + * + * **Example**: + * + * auto s = fmt::format("{}", fmt::ptr(p)); + */ +template auto ptr(T p) -> const void* { + static_assert(std::is_pointer::value, ""); + return detail::bit_cast(p); +} + +/** + * Converts `e` to the underlying type. + * + * **Example**: + * + * enum class color { red, green, blue }; + * auto s = fmt::format("{}", fmt::underlying(color::red)); + */ +template +constexpr auto underlying(Enum e) noexcept -> underlying_t { + return static_cast>(e); +} + +namespace enums { +template ::value)> +constexpr auto format_as(Enum e) noexcept -> underlying_t { + return static_cast>(e); +} +} // namespace enums + +class bytes { + private: + string_view data_; + friend struct formatter; + + public: + explicit bytes(string_view data) : data_(data) {} +}; + +template <> struct formatter { + private: + detail::dynamic_format_specs<> specs_; + + public: + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> const char* { + return parse_format_specs(ctx.begin(), ctx.end(), specs_, ctx, + detail::type::string_type); + } + + template + auto format(bytes b, FormatContext& ctx) const -> decltype(ctx.out()) { + auto specs = specs_; + detail::handle_dynamic_spec(specs.width, + specs.width_ref, ctx); + detail::handle_dynamic_spec( + specs.precision, specs.precision_ref, ctx); + return detail::write_bytes(ctx.out(), b.data_, specs); + } +}; + +// group_digits_view is not derived from view because it copies the argument. +template struct group_digits_view { + T value; +}; + +/** + * Returns a view that formats an integer value using ',' as a + * locale-independent thousands separator. + * + * **Example**: + * + * fmt::print("{}", fmt::group_digits(12345)); + * // Output: "12,345" + */ +template auto group_digits(T value) -> group_digits_view { + return {value}; +} + +template struct formatter> : formatter { + private: + detail::dynamic_format_specs<> specs_; + + public: + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> const char* { + return parse_format_specs(ctx.begin(), ctx.end(), specs_, ctx, + detail::type::int_type); + } + + template + auto format(group_digits_view t, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto specs = specs_; + detail::handle_dynamic_spec(specs.width, + specs.width_ref, ctx); + detail::handle_dynamic_spec( + specs.precision, specs.precision_ref, ctx); + auto arg = detail::make_write_int_arg(t.value, specs.sign); + return detail::write_int( + ctx.out(), static_cast>(arg.abs_value), + arg.prefix, specs, detail::digit_grouping("\3", ",")); + } +}; + +template struct nested_view { + const formatter* fmt; + const T* value; +}; + +template +struct formatter, Char> { + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + template + auto format(nested_view view, FormatContext& ctx) const + -> decltype(ctx.out()) { + return view.fmt->format(*view.value, ctx); + } +}; + +template struct nested_formatter { + private: + int width_; + detail::fill_t fill_; + align_t align_ : 4; + formatter formatter_; + + public: + constexpr nested_formatter() : width_(0), align_(align_t::none) {} + + FMT_CONSTEXPR auto parse(basic_format_parse_context& ctx) + -> decltype(ctx.begin()) { + auto specs = detail::dynamic_format_specs(); + auto it = parse_format_specs(ctx.begin(), ctx.end(), specs, ctx, + detail::type::none_type); + width_ = specs.width; + fill_ = specs.fill; + align_ = specs.align; + ctx.advance_to(it); + return formatter_.parse(ctx); + } + + template + auto write_padded(FormatContext& ctx, F write) const -> decltype(ctx.out()) { + if (width_ == 0) return write(ctx.out()); + auto buf = basic_memory_buffer(); + write(basic_appender(buf)); + auto specs = format_specs(); + specs.width = width_; + specs.fill = fill_; + specs.align = align_; + return detail::write( + ctx.out(), basic_string_view(buf.data(), buf.size()), specs); + } + + auto nested(const T& value) const -> nested_view { + return nested_view{&formatter_, &value}; + } +}; + +/** + * Converts `value` to `std::string` using the default format for type `T`. + * + * **Example**: + * + * std::string answer = fmt::to_string(42); + */ +template ::value && + !detail::has_format_as::value)> +inline auto to_string(const T& value) -> std::string { + auto buffer = memory_buffer(); + detail::write(appender(buffer), value); + return {buffer.data(), buffer.size()}; +} + +template ::value)> +FMT_NODISCARD inline auto to_string(T value) -> std::string { + // The buffer should be large enough to store the number including the sign + // or "false" for bool. + constexpr int max_size = detail::digits10() + 2; + char buffer[max_size > 5 ? static_cast(max_size) : 5]; + char* begin = buffer; + return std::string(begin, detail::write(begin, value)); +} + +template +FMT_NODISCARD auto to_string(const basic_memory_buffer& buf) + -> std::basic_string { + auto size = buf.size(); + detail::assume(size < std::basic_string().max_size()); + return std::basic_string(buf.data(), size); +} + +template ::value && + detail::has_format_as::value)> +inline auto to_string(const T& value) -> std::string { + return to_string(format_as(value)); +} + +FMT_END_EXPORT + +namespace detail { + +template +void vformat_to(buffer& buf, basic_string_view fmt, + typename vformat_args::type args, locale_ref loc) { + auto out = basic_appender(buf); + if (fmt.size() == 2 && equal2(fmt.data(), "{}")) { + auto arg = args.get(0); + if (!arg) report_error("argument not found"); + arg.visit(default_arg_formatter{out, args, loc}); + return; + } + + struct format_handler { + basic_format_parse_context parse_context; + buffered_context context; + + format_handler(basic_appender p_out, basic_string_view str, + basic_format_args> p_args, + locale_ref p_loc) + : parse_context(str), context(p_out, p_args, p_loc) {} + + void on_text(const Char* begin, const Char* end) { + auto text = basic_string_view(begin, to_unsigned(end - begin)); + context.advance_to(write(context.out(), text)); + } + + FMT_CONSTEXPR auto on_arg_id() -> int { + return parse_context.next_arg_id(); + } + FMT_CONSTEXPR auto on_arg_id(int id) -> int { + parse_context.check_arg_id(id); + return id; + } + FMT_CONSTEXPR auto on_arg_id(basic_string_view id) -> int { + parse_context.check_arg_id(id); + int arg_id = context.arg_id(id); + if (arg_id < 0) report_error("argument not found"); + return arg_id; + } + + FMT_INLINE void on_replacement_field(int id, const Char*) { + auto arg = get_arg(context, id); + context.advance_to(arg.visit(default_arg_formatter{ + context.out(), context.args(), context.locale()})); + } + + auto on_format_specs(int id, const Char* begin, const Char* end) + -> const Char* { + auto arg = get_arg(context, id); + // Not using a visitor for custom types gives better codegen. + if (arg.format_custom(begin, parse_context, context)) + return parse_context.begin(); + auto specs = detail::dynamic_format_specs(); + begin = parse_format_specs(begin, end, specs, parse_context, arg.type()); + detail::handle_dynamic_spec( + specs.width, specs.width_ref, context); + detail::handle_dynamic_spec( + specs.precision, specs.precision_ref, context); + if (begin == end || *begin != '}') + report_error("missing '}' in format string"); + context.advance_to(arg.visit( + arg_formatter{context.out(), specs, context.locale()})); + return begin; + } + + FMT_NORETURN void on_error(const char* message) { report_error(message); } + }; + detail::parse_format_string(fmt, format_handler(out, fmt, args, loc)); +} + +FMT_BEGIN_EXPORT + +#ifndef FMT_HEADER_ONLY +extern template FMT_API void vformat_to(buffer&, string_view, + typename vformat_args<>::type, + locale_ref); +extern template FMT_API auto thousands_sep_impl(locale_ref) + -> thousands_sep_result; +extern template FMT_API auto thousands_sep_impl(locale_ref) + -> thousands_sep_result; +extern template FMT_API auto decimal_point_impl(locale_ref) -> char; +extern template FMT_API auto decimal_point_impl(locale_ref) -> wchar_t; +#endif // FMT_HEADER_ONLY + +FMT_END_EXPORT + +template +template +FMT_CONSTEXPR FMT_INLINE auto native_formatter::format( + const T& val, FormatContext& ctx) const -> decltype(ctx.out()) { + if (specs_.width_ref.kind == arg_id_kind::none && + specs_.precision_ref.kind == arg_id_kind::none) { + return write(ctx.out(), val, specs_, ctx.locale()); + } + auto specs = specs_; + handle_dynamic_spec(specs.width, specs.width_ref, ctx); + handle_dynamic_spec(specs.precision, specs.precision_ref, + ctx); + return write(ctx.out(), val, specs, ctx.locale()); +} + +} // namespace detail + +FMT_BEGIN_EXPORT + +template +struct formatter + : detail::native_formatter {}; + +#if FMT_USE_USER_DEFINED_LITERALS +inline namespace literals { +/** + * User-defined literal equivalent of `fmt::arg`. + * + * **Example**: + * + * using namespace fmt::literals; + * fmt::print("The answer is {answer}.", "answer"_a=42); + */ +# if FMT_USE_NONTYPE_TEMPLATE_ARGS +template constexpr auto operator""_a() { + using char_t = remove_cvref_t; + return detail::udl_arg(); +} +# else +constexpr auto operator""_a(const char* s, size_t) -> detail::udl_arg { + return {s}; +} +# endif +} // namespace literals +#endif // FMT_USE_USER_DEFINED_LITERALS + +FMT_API auto vformat(string_view fmt, format_args args) -> std::string; + +/** + * Formats `args` according to specifications in `fmt` and returns the result + * as a string. + * + * **Example**: + * + * #include + * std::string message = fmt::format("The answer is {}.", 42); + */ +template +FMT_NODISCARD FMT_INLINE auto format(format_string fmt, T&&... args) + -> std::string { + return vformat(fmt, fmt::make_format_args(args...)); +} + +template ::value)> +inline auto vformat(const Locale& loc, string_view fmt, format_args args) + -> std::string { + return detail::vformat(loc, fmt, args); +} + +template ::value)> +inline auto format(const Locale& loc, format_string fmt, T&&... args) + -> std::string { + return fmt::vformat(loc, string_view(fmt), fmt::make_format_args(args...)); +} + +template ::value&& + detail::is_locale::value)> +auto vformat_to(OutputIt out, const Locale& loc, string_view fmt, + format_args args) -> OutputIt { + using detail::get_buffer; + auto&& buf = get_buffer(out); + detail::vformat_to(buf, fmt, args, detail::locale_ref(loc)); + return detail::get_iterator(buf, out); +} + +template ::value&& + detail::is_locale::value)> +FMT_INLINE auto format_to(OutputIt out, const Locale& loc, + format_string fmt, T&&... args) -> OutputIt { + return vformat_to(out, loc, fmt, fmt::make_format_args(args...)); +} + +template ::value)> +FMT_NODISCARD FMT_INLINE auto formatted_size(const Locale& loc, + format_string fmt, + T&&... args) -> size_t { + auto buf = detail::counting_buffer<>(); + detail::vformat_to(buf, fmt, fmt::make_format_args(args...), + detail::locale_ref(loc)); + return buf.count(); +} + +FMT_END_EXPORT + +FMT_END_NAMESPACE + +#ifdef FMT_HEADER_ONLY +# define FMT_FUNC inline +# include "format-inl.h" +#else +# define FMT_FUNC +#endif + +// Restore _LIBCPP_REMOVE_TRANSITIVE_INCLUDES. +#ifdef FMT_REMOVE_TRANSITIVE_INCLUDES +# undef _LIBCPP_REMOVE_TRANSITIVE_INCLUDES +#endif + +#endif // FMT_FORMAT_H_ diff --git a/Submodules/fmt/include/fmt/os.h b/Submodules/fmt/include/fmt/os.h new file mode 100644 index 0000000..5c85ea0 --- /dev/null +++ b/Submodules/fmt/include/fmt/os.h @@ -0,0 +1,439 @@ +// Formatting library for C++ - optional OS-specific functionality +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_OS_H_ +#define FMT_OS_H_ + +#include "format.h" + +#ifndef FMT_MODULE +# include +# include +# include +# include // std::system_error + +# if FMT_HAS_INCLUDE() +# include // LC_NUMERIC_MASK on macOS +# endif +#endif // FMT_MODULE + +#ifndef FMT_USE_FCNTL +// UWP doesn't provide _pipe. +# if FMT_HAS_INCLUDE("winapifamily.h") +# include +# endif +# if (FMT_HAS_INCLUDE() || defined(__APPLE__) || \ + defined(__linux__)) && \ + (!defined(WINAPI_FAMILY) || \ + (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP)) +# include // for O_RDONLY +# define FMT_USE_FCNTL 1 +# else +# define FMT_USE_FCNTL 0 +# endif +#endif + +#ifndef FMT_POSIX +# if defined(_WIN32) && !defined(__MINGW32__) +// Fix warnings about deprecated symbols. +# define FMT_POSIX(call) _##call +# else +# define FMT_POSIX(call) call +# endif +#endif + +// Calls to system functions are wrapped in FMT_SYSTEM for testability. +#ifdef FMT_SYSTEM +# define FMT_HAS_SYSTEM +# define FMT_POSIX_CALL(call) FMT_SYSTEM(call) +#else +# define FMT_SYSTEM(call) ::call +# ifdef _WIN32 +// Fix warnings about deprecated symbols. +# define FMT_POSIX_CALL(call) ::_##call +# else +# define FMT_POSIX_CALL(call) ::call +# endif +#endif + +// Retries the expression while it evaluates to error_result and errno +// equals to EINTR. +#ifndef _WIN32 +# define FMT_RETRY_VAL(result, expression, error_result) \ + do { \ + (result) = (expression); \ + } while ((result) == (error_result) && errno == EINTR) +#else +# define FMT_RETRY_VAL(result, expression, error_result) result = (expression) +#endif + +#define FMT_RETRY(result, expression) FMT_RETRY_VAL(result, expression, -1) + +FMT_BEGIN_NAMESPACE +FMT_BEGIN_EXPORT + +/** + * A reference to a null-terminated string. It can be constructed from a C + * string or `std::string`. + * + * You can use one of the following type aliases for common character types: + * + * +---------------+-----------------------------+ + * | Type | Definition | + * +===============+=============================+ + * | cstring_view | basic_cstring_view | + * +---------------+-----------------------------+ + * | wcstring_view | basic_cstring_view | + * +---------------+-----------------------------+ + * + * This class is most useful as a parameter type for functions that wrap C APIs. + */ +template class basic_cstring_view { + private: + const Char* data_; + + public: + /// Constructs a string reference object from a C string. + basic_cstring_view(const Char* s) : data_(s) {} + + /// Constructs a string reference from an `std::string` object. + basic_cstring_view(const std::basic_string& s) : data_(s.c_str()) {} + + /// Returns the pointer to a C string. + auto c_str() const -> const Char* { return data_; } +}; + +using cstring_view = basic_cstring_view; +using wcstring_view = basic_cstring_view; + +#ifdef _WIN32 +FMT_API const std::error_category& system_category() noexcept; + +namespace detail { +FMT_API void format_windows_error(buffer& out, int error_code, + const char* message) noexcept; +} + +FMT_API std::system_error vwindows_error(int error_code, string_view format_str, + format_args args); + +/** + * Constructs a `std::system_error` object with the description of the form + * + * : + * + * where `` is the formatted message and `` is the + * system message corresponding to the error code. + * `error_code` is a Windows error code as given by `GetLastError`. + * If `error_code` is not a valid error code such as -1, the system message + * will look like "error -1". + * + * **Example**: + * + * // This throws a system_error with the description + * // cannot open file 'madeup': The system cannot find the file + * specified. + * // or similar (system message may vary). + * const char *filename = "madeup"; + * LPOFSTRUCT of = LPOFSTRUCT(); + * HFILE file = OpenFile(filename, &of, OF_READ); + * if (file == HFILE_ERROR) { + * throw fmt::windows_error(GetLastError(), + * "cannot open file '{}'", filename); + * } + */ +template +std::system_error windows_error(int error_code, string_view message, + const Args&... args) { + return vwindows_error(error_code, message, fmt::make_format_args(args...)); +} + +// Reports a Windows error without throwing an exception. +// Can be used to report errors from destructors. +FMT_API void report_windows_error(int error_code, const char* message) noexcept; +#else +inline auto system_category() noexcept -> const std::error_category& { + return std::system_category(); +} +#endif // _WIN32 + +// std::system is not available on some platforms such as iOS (#2248). +#ifdef __OSX__ +template > +void say(const S& format_str, Args&&... args) { + std::system(format("say \"{}\"", format(format_str, args...)).c_str()); +} +#endif + +// A buffered file. +class buffered_file { + private: + FILE* file_; + + friend class file; + + explicit buffered_file(FILE* f) : file_(f) {} + + public: + buffered_file(const buffered_file&) = delete; + void operator=(const buffered_file&) = delete; + + // Constructs a buffered_file object which doesn't represent any file. + buffered_file() noexcept : file_(nullptr) {} + + // Destroys the object closing the file it represents if any. + FMT_API ~buffered_file() noexcept; + + public: + buffered_file(buffered_file&& other) noexcept : file_(other.file_) { + other.file_ = nullptr; + } + + auto operator=(buffered_file&& other) -> buffered_file& { + close(); + file_ = other.file_; + other.file_ = nullptr; + return *this; + } + + // Opens a file. + FMT_API buffered_file(cstring_view filename, cstring_view mode); + + // Closes the file. + FMT_API void close(); + + // Returns the pointer to a FILE object representing this file. + auto get() const noexcept -> FILE* { return file_; } + + FMT_API auto descriptor() const -> int; + + template + inline void print(string_view fmt, const T&... args) { + const auto& vargs = fmt::make_format_args(args...); + detail::is_locking() ? fmt::vprint_buffered(file_, fmt, vargs) + : fmt::vprint(file_, fmt, vargs); + } +}; + +#if FMT_USE_FCNTL + +// A file. Closed file is represented by a file object with descriptor -1. +// Methods that are not declared with noexcept may throw +// fmt::system_error in case of failure. Note that some errors such as +// closing the file multiple times will cause a crash on Windows rather +// than an exception. You can get standard behavior by overriding the +// invalid parameter handler with _set_invalid_parameter_handler. +class FMT_API file { + private: + int fd_; // File descriptor. + + // Constructs a file object with a given descriptor. + explicit file(int fd) : fd_(fd) {} + + friend struct pipe; + + public: + // Possible values for the oflag argument to the constructor. + enum { + RDONLY = FMT_POSIX(O_RDONLY), // Open for reading only. + WRONLY = FMT_POSIX(O_WRONLY), // Open for writing only. + RDWR = FMT_POSIX(O_RDWR), // Open for reading and writing. + CREATE = FMT_POSIX(O_CREAT), // Create if the file doesn't exist. + APPEND = FMT_POSIX(O_APPEND), // Open in append mode. + TRUNC = FMT_POSIX(O_TRUNC) // Truncate the content of the file. + }; + + // Constructs a file object which doesn't represent any file. + file() noexcept : fd_(-1) {} + + // Opens a file and constructs a file object representing this file. + file(cstring_view path, int oflag); + + public: + file(const file&) = delete; + void operator=(const file&) = delete; + + file(file&& other) noexcept : fd_(other.fd_) { other.fd_ = -1; } + + // Move assignment is not noexcept because close may throw. + auto operator=(file&& other) -> file& { + close(); + fd_ = other.fd_; + other.fd_ = -1; + return *this; + } + + // Destroys the object closing the file it represents if any. + ~file() noexcept; + + // Returns the file descriptor. + auto descriptor() const noexcept -> int { return fd_; } + + // Closes the file. + void close(); + + // Returns the file size. The size has signed type for consistency with + // stat::st_size. + auto size() const -> long long; + + // Attempts to read count bytes from the file into the specified buffer. + auto read(void* buffer, size_t count) -> size_t; + + // Attempts to write count bytes from the specified buffer to the file. + auto write(const void* buffer, size_t count) -> size_t; + + // Duplicates a file descriptor with the dup function and returns + // the duplicate as a file object. + static auto dup(int fd) -> file; + + // Makes fd be the copy of this file descriptor, closing fd first if + // necessary. + void dup2(int fd); + + // Makes fd be the copy of this file descriptor, closing fd first if + // necessary. + void dup2(int fd, std::error_code& ec) noexcept; + + // Creates a buffered_file object associated with this file and detaches + // this file object from the file. + auto fdopen(const char* mode) -> buffered_file; + +# if defined(_WIN32) && !defined(__MINGW32__) + // Opens a file and constructs a file object representing this file by + // wcstring_view filename. Windows only. + static file open_windows_file(wcstring_view path, int oflag); +# endif +}; + +struct FMT_API pipe { + file read_end; + file write_end; + + // Creates a pipe setting up read_end and write_end file objects for reading + // and writing respectively. + pipe(); +}; + +// Returns the memory page size. +auto getpagesize() -> long; + +namespace detail { + +struct buffer_size { + buffer_size() = default; + size_t value = 0; + auto operator=(size_t val) const -> buffer_size { + auto bs = buffer_size(); + bs.value = val; + return bs; + } +}; + +struct ostream_params { + int oflag = file::WRONLY | file::CREATE | file::TRUNC; + size_t buffer_size = BUFSIZ > 32768 ? BUFSIZ : 32768; + + ostream_params() {} + + template + ostream_params(T... params, int new_oflag) : ostream_params(params...) { + oflag = new_oflag; + } + + template + ostream_params(T... params, detail::buffer_size bs) + : ostream_params(params...) { + this->buffer_size = bs.value; + } + +// Intel has a bug that results in failure to deduce a constructor +// for empty parameter packs. +# if defined(__INTEL_COMPILER) && __INTEL_COMPILER < 2000 + ostream_params(int new_oflag) : oflag(new_oflag) {} + ostream_params(detail::buffer_size bs) : buffer_size(bs.value) {} +# endif +}; + +class file_buffer final : public buffer { + private: + file file_; + + FMT_API static void grow(buffer& buf, size_t); + + public: + FMT_API file_buffer(cstring_view path, const ostream_params& params); + FMT_API file_buffer(file_buffer&& other) noexcept; + FMT_API ~file_buffer(); + + void flush() { + if (size() == 0) return; + file_.write(data(), size() * sizeof(data()[0])); + clear(); + } + + void close() { + flush(); + file_.close(); + } +}; + +} // namespace detail + +constexpr auto buffer_size = detail::buffer_size(); + +/// A fast output stream for writing from a single thread. Writing from +/// multiple threads without external synchronization may result in a data race. +class FMT_API ostream { + private: + FMT_MSC_WARNING(suppress : 4251) + detail::file_buffer buffer_; + + ostream(cstring_view path, const detail::ostream_params& params) + : buffer_(path, params) {} + + public: + ostream(ostream&& other) : buffer_(std::move(other.buffer_)) {} + + ~ostream(); + + void flush() { buffer_.flush(); } + + template + friend auto output_file(cstring_view path, T... params) -> ostream; + + void close() { buffer_.close(); } + + /// Formats `args` according to specifications in `fmt` and writes the + /// output to the file. + template void print(format_string fmt, T&&... args) { + vformat_to(appender(buffer_), fmt, fmt::make_format_args(args...)); + } +}; + +/** + * Opens a file for writing. Supported parameters passed in `params`: + * + * - ``: Flags passed to [open]( + * https://pubs.opengroup.org/onlinepubs/007904875/functions/open.html) + * (`file::WRONLY | file::CREATE | file::TRUNC` by default) + * - `buffer_size=`: Output buffer size + * + * **Example**: + * + * auto out = fmt::output_file("guide.txt"); + * out.print("Don't {}", "Panic"); + */ +template +inline auto output_file(cstring_view path, T... params) -> ostream { + return {path, detail::ostream_params(params...)}; +} +#endif // FMT_USE_FCNTL + +FMT_END_EXPORT +FMT_END_NAMESPACE + +#endif // FMT_OS_H_ diff --git a/Submodules/fmt/include/fmt/ostream.h b/Submodules/fmt/include/fmt/ostream.h new file mode 100644 index 0000000..98faef6 --- /dev/null +++ b/Submodules/fmt/include/fmt/ostream.h @@ -0,0 +1,211 @@ +// Formatting library for C++ - std::ostream support +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_OSTREAM_H_ +#define FMT_OSTREAM_H_ + +#ifndef FMT_MODULE +# include // std::filebuf +#endif + +#ifdef _WIN32 +# ifdef __GLIBCXX__ +# include +# include +# endif +# include +#endif + +#include "chrono.h" // formatbuf + +FMT_BEGIN_NAMESPACE +namespace detail { + +// Generate a unique explicit instantion in every translation unit using a tag +// type in an anonymous namespace. +namespace { +struct file_access_tag {}; +} // namespace +template +class file_access { + friend auto get_file(BufType& obj) -> FILE* { return obj.*FileMemberPtr; } +}; + +#if FMT_MSC_VERSION +template class file_access; +auto get_file(std::filebuf&) -> FILE*; +#endif + +inline auto write_ostream_unicode(std::ostream& os, fmt::string_view data) + -> bool { + FILE* f = nullptr; +#if FMT_MSC_VERSION && FMT_USE_RTTI + if (auto* buf = dynamic_cast(os.rdbuf())) + f = get_file(*buf); + else + return false; +#elif defined(_WIN32) && defined(__GLIBCXX__) && FMT_USE_RTTI + auto* rdbuf = os.rdbuf(); + if (auto* sfbuf = dynamic_cast<__gnu_cxx::stdio_sync_filebuf*>(rdbuf)) + f = sfbuf->file(); + else if (auto* fbuf = dynamic_cast<__gnu_cxx::stdio_filebuf*>(rdbuf)) + f = fbuf->file(); + else + return false; +#else + ignore_unused(os, data, f); +#endif +#ifdef _WIN32 + if (f) { + int fd = _fileno(f); + if (_isatty(fd)) { + os.flush(); + return write_console(fd, data); + } + } +#endif + return false; +} +inline auto write_ostream_unicode(std::wostream&, + fmt::basic_string_view) -> bool { + return false; +} + +// Write the content of buf to os. +// It is a separate function rather than a part of vprint to simplify testing. +template +void write_buffer(std::basic_ostream& os, buffer& buf) { + const Char* buf_data = buf.data(); + using unsigned_streamsize = std::make_unsigned::type; + unsigned_streamsize size = buf.size(); + unsigned_streamsize max_size = to_unsigned(max_value()); + do { + unsigned_streamsize n = size <= max_size ? size : max_size; + os.write(buf_data, static_cast(n)); + buf_data += n; + size -= n; + } while (size != 0); +} + +template +void format_value(buffer& buf, const T& value) { + auto&& format_buf = formatbuf>(buf); + auto&& output = std::basic_ostream(&format_buf); +#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR) + output.imbue(std::locale::classic()); // The default is always unlocalized. +#endif + output << value; + output.exceptions(std::ios_base::failbit | std::ios_base::badbit); +} + +template struct streamed_view { + const T& value; +}; + +} // namespace detail + +// Formats an object of type T that has an overloaded ostream operator<<. +template +struct basic_ostream_formatter : formatter, Char> { + void set_debug_format() = delete; + + template + auto format(const T& value, Context& ctx) const -> decltype(ctx.out()) { + auto buffer = basic_memory_buffer(); + detail::format_value(buffer, value); + return formatter, Char>::format( + {buffer.data(), buffer.size()}, ctx); + } +}; + +using ostream_formatter = basic_ostream_formatter; + +template +struct formatter, Char> + : basic_ostream_formatter { + template + auto format(detail::streamed_view view, Context& ctx) const + -> decltype(ctx.out()) { + return basic_ostream_formatter::format(view.value, ctx); + } +}; + +/** + * Returns a view that formats `value` via an ostream `operator<<`. + * + * **Example**: + * + * fmt::print("Current thread id: {}\n", + * fmt::streamed(std::this_thread::get_id())); + */ +template +constexpr auto streamed(const T& value) -> detail::streamed_view { + return {value}; +} + +namespace detail { + +inline void vprint_directly(std::ostream& os, string_view format_str, + format_args args) { + auto buffer = memory_buffer(); + detail::vformat_to(buffer, format_str, args); + detail::write_buffer(os, buffer); +} + +} // namespace detail + +FMT_EXPORT template +void vprint(std::basic_ostream& os, + basic_string_view> format_str, + typename detail::vformat_args::type args) { + auto buffer = basic_memory_buffer(); + detail::vformat_to(buffer, format_str, args); + if (detail::write_ostream_unicode(os, {buffer.data(), buffer.size()})) return; + detail::write_buffer(os, buffer); +} + +/** + * Prints formatted data to the stream `os`. + * + * **Example**: + * + * fmt::print(cerr, "Don't {}!", "panic"); + */ +FMT_EXPORT template +void print(std::ostream& os, format_string fmt, T&&... args) { + const auto& vargs = fmt::make_format_args(args...); + if (detail::use_utf8()) + vprint(os, fmt, vargs); + else + detail::vprint_directly(os, fmt, vargs); +} + +FMT_EXPORT +template +void print(std::wostream& os, + basic_format_string...> fmt, + Args&&... args) { + vprint(os, fmt, fmt::make_format_args>(args...)); +} + +FMT_EXPORT template +void println(std::ostream& os, format_string fmt, T&&... args) { + fmt::print(os, "{}\n", fmt::format(fmt, std::forward(args)...)); +} + +FMT_EXPORT +template +void println(std::wostream& os, + basic_format_string...> fmt, + Args&&... args) { + print(os, L"{}\n", fmt::format(fmt, std::forward(args)...)); +} + +FMT_END_NAMESPACE + +#endif // FMT_OSTREAM_H_ diff --git a/Submodules/fmt/include/fmt/printf.h b/Submodules/fmt/include/fmt/printf.h new file mode 100644 index 0000000..072cc6b --- /dev/null +++ b/Submodules/fmt/include/fmt/printf.h @@ -0,0 +1,656 @@ +// Formatting library for C++ - legacy printf implementation +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_PRINTF_H_ +#define FMT_PRINTF_H_ + +#ifndef FMT_MODULE +# include // std::max +# include // std::numeric_limits +#endif + +#include "format.h" + +FMT_BEGIN_NAMESPACE +FMT_BEGIN_EXPORT + +template struct printf_formatter { + printf_formatter() = delete; +}; + +template class basic_printf_context { + private: + basic_appender out_; + basic_format_args args_; + + static_assert(std::is_same::value || + std::is_same::value, + "Unsupported code unit type."); + + public: + using char_type = Char; + using parse_context_type = basic_format_parse_context; + template using formatter_type = printf_formatter; + + /// Constructs a `printf_context` object. References to the arguments are + /// stored in the context object so make sure they have appropriate lifetimes. + basic_printf_context(basic_appender out, + basic_format_args args) + : out_(out), args_(args) {} + + auto out() -> basic_appender { return out_; } + void advance_to(basic_appender) {} + + auto locale() -> detail::locale_ref { return {}; } + + auto arg(int id) const -> basic_format_arg { + return args_.get(id); + } +}; + +namespace detail { + +// Checks if a value fits in int - used to avoid warnings about comparing +// signed and unsigned integers. +template struct int_checker { + template static auto fits_in_int(T value) -> bool { + unsigned max = to_unsigned(max_value()); + return value <= max; + } + static auto fits_in_int(bool) -> bool { return true; } +}; + +template <> struct int_checker { + template static auto fits_in_int(T value) -> bool { + return value >= (std::numeric_limits::min)() && + value <= max_value(); + } + static auto fits_in_int(int) -> bool { return true; } +}; + +struct printf_precision_handler { + template ::value)> + auto operator()(T value) -> int { + if (!int_checker::is_signed>::fits_in_int(value)) + report_error("number is too big"); + return (std::max)(static_cast(value), 0); + } + + template ::value)> + auto operator()(T) -> int { + report_error("precision is not integer"); + return 0; + } +}; + +// An argument visitor that returns true iff arg is a zero integer. +struct is_zero_int { + template ::value)> + auto operator()(T value) -> bool { + return value == 0; + } + + template ::value)> + auto operator()(T) -> bool { + return false; + } +}; + +template struct make_unsigned_or_bool : std::make_unsigned {}; + +template <> struct make_unsigned_or_bool { + using type = bool; +}; + +template class arg_converter { + private: + using char_type = typename Context::char_type; + + basic_format_arg& arg_; + char_type type_; + + public: + arg_converter(basic_format_arg& arg, char_type type) + : arg_(arg), type_(type) {} + + void operator()(bool value) { + if (type_ != 's') operator()(value); + } + + template ::value)> + void operator()(U value) { + bool is_signed = type_ == 'd' || type_ == 'i'; + using target_type = conditional_t::value, U, T>; + if (const_check(sizeof(target_type) <= sizeof(int))) { + // Extra casts are used to silence warnings. + if (is_signed) { + auto n = static_cast(static_cast(value)); + arg_ = detail::make_arg(n); + } else { + using unsigned_type = typename make_unsigned_or_bool::type; + auto n = static_cast(static_cast(value)); + arg_ = detail::make_arg(n); + } + } else { + if (is_signed) { + // glibc's printf doesn't sign extend arguments of smaller types: + // std::printf("%lld", -42); // prints "4294967254" + // but we don't have to do the same because it's a UB. + auto n = static_cast(value); + arg_ = detail::make_arg(n); + } else { + auto n = static_cast::type>(value); + arg_ = detail::make_arg(n); + } + } + } + + template ::value)> + void operator()(U) {} // No conversion needed for non-integral types. +}; + +// Converts an integer argument to T for printf, if T is an integral type. +// If T is void, the argument is converted to corresponding signed or unsigned +// type depending on the type specifier: 'd' and 'i' - signed, other - +// unsigned). +template +void convert_arg(basic_format_arg& arg, Char type) { + arg.visit(arg_converter(arg, type)); +} + +// Converts an integer argument to char for printf. +template class char_converter { + private: + basic_format_arg& arg_; + + public: + explicit char_converter(basic_format_arg& arg) : arg_(arg) {} + + template ::value)> + void operator()(T value) { + auto c = static_cast(value); + arg_ = detail::make_arg(c); + } + + template ::value)> + void operator()(T) {} // No conversion needed for non-integral types. +}; + +// An argument visitor that return a pointer to a C string if argument is a +// string or null otherwise. +template struct get_cstring { + template auto operator()(T) -> const Char* { return nullptr; } + auto operator()(const Char* s) -> const Char* { return s; } +}; + +// Checks if an argument is a valid printf width specifier and sets +// left alignment if it is negative. +class printf_width_handler { + private: + format_specs& specs_; + + public: + explicit printf_width_handler(format_specs& specs) : specs_(specs) {} + + template ::value)> + auto operator()(T value) -> unsigned { + auto width = static_cast>(value); + if (detail::is_negative(value)) { + specs_.align = align::left; + width = 0 - width; + } + unsigned int_max = to_unsigned(max_value()); + if (width > int_max) report_error("number is too big"); + return static_cast(width); + } + + template ::value)> + auto operator()(T) -> unsigned { + report_error("width is not integer"); + return 0; + } +}; + +// Workaround for a bug with the XL compiler when initializing +// printf_arg_formatter's base class. +template +auto make_arg_formatter(basic_appender iter, format_specs& s) + -> arg_formatter { + return {iter, s, locale_ref()}; +} + +// The `printf` argument formatter. +template +class printf_arg_formatter : public arg_formatter { + private: + using base = arg_formatter; + using context_type = basic_printf_context; + + context_type& context_; + + void write_null_pointer(bool is_string = false) { + auto s = this->specs; + s.type = presentation_type::none; + write_bytes(this->out, is_string ? "(null)" : "(nil)", s); + } + + public: + printf_arg_formatter(basic_appender iter, format_specs& s, + context_type& ctx) + : base(make_arg_formatter(iter, s)), context_(ctx) {} + + void operator()(monostate value) { base::operator()(value); } + + template ::value)> + void operator()(T value) { + // MSVC2013 fails to compile separate overloads for bool and Char so use + // std::is_same instead. + if (!std::is_same::value) { + base::operator()(value); + return; + } + format_specs s = this->specs; + if (s.type != presentation_type::none && s.type != presentation_type::chr) { + return (*this)(static_cast(value)); + } + s.sign = sign::none; + s.alt = false; + s.fill = ' '; // Ignore '0' flag for char types. + // align::numeric needs to be overwritten here since the '0' flag is + // ignored for non-numeric types + if (s.align == align::none || s.align == align::numeric) + s.align = align::right; + write(this->out, static_cast(value), s); + } + + template ::value)> + void operator()(T value) { + base::operator()(value); + } + + void operator()(const char* value) { + if (value) + base::operator()(value); + else + write_null_pointer(this->specs.type != presentation_type::pointer); + } + + void operator()(const wchar_t* value) { + if (value) + base::operator()(value); + else + write_null_pointer(this->specs.type != presentation_type::pointer); + } + + void operator()(basic_string_view value) { base::operator()(value); } + + void operator()(const void* value) { + if (value) + base::operator()(value); + else + write_null_pointer(); + } + + void operator()(typename basic_format_arg::handle handle) { + auto parse_ctx = basic_format_parse_context({}); + handle.format(parse_ctx, context_); + } +}; + +template +void parse_flags(format_specs& specs, const Char*& it, const Char* end) { + for (; it != end; ++it) { + switch (*it) { + case '-': + specs.align = align::left; + break; + case '+': + specs.sign = sign::plus; + break; + case '0': + specs.fill = '0'; + break; + case ' ': + if (specs.sign != sign::plus) specs.sign = sign::space; + break; + case '#': + specs.alt = true; + break; + default: + return; + } + } +} + +template +auto parse_header(const Char*& it, const Char* end, format_specs& specs, + GetArg get_arg) -> int { + int arg_index = -1; + Char c = *it; + if (c >= '0' && c <= '9') { + // Parse an argument index (if followed by '$') or a width possibly + // preceded with '0' flag(s). + int value = parse_nonnegative_int(it, end, -1); + if (it != end && *it == '$') { // value is an argument index + ++it; + arg_index = value != -1 ? value : max_value(); + } else { + if (c == '0') specs.fill = '0'; + if (value != 0) { + // Nonzero value means that we parsed width and don't need to + // parse it or flags again, so return now. + if (value == -1) report_error("number is too big"); + specs.width = value; + return arg_index; + } + } + } + parse_flags(specs, it, end); + // Parse width. + if (it != end) { + if (*it >= '0' && *it <= '9') { + specs.width = parse_nonnegative_int(it, end, -1); + if (specs.width == -1) report_error("number is too big"); + } else if (*it == '*') { + ++it; + specs.width = static_cast( + get_arg(-1).visit(detail::printf_width_handler(specs))); + } + } + return arg_index; +} + +inline auto parse_printf_presentation_type(char c, type t, bool& upper) + -> presentation_type { + using pt = presentation_type; + constexpr auto integral_set = sint_set | uint_set | bool_set | char_set; + switch (c) { + case 'd': + return in(t, integral_set) ? pt::dec : pt::none; + case 'o': + return in(t, integral_set) ? pt::oct : pt::none; + case 'X': + upper = true; + FMT_FALLTHROUGH; + case 'x': + return in(t, integral_set) ? pt::hex : pt::none; + case 'E': + upper = true; + FMT_FALLTHROUGH; + case 'e': + return in(t, float_set) ? pt::exp : pt::none; + case 'F': + upper = true; + FMT_FALLTHROUGH; + case 'f': + return in(t, float_set) ? pt::fixed : pt::none; + case 'G': + upper = true; + FMT_FALLTHROUGH; + case 'g': + return in(t, float_set) ? pt::general : pt::none; + case 'A': + upper = true; + FMT_FALLTHROUGH; + case 'a': + return in(t, float_set) ? pt::hexfloat : pt::none; + case 'c': + return in(t, integral_set) ? pt::chr : pt::none; + case 's': + return in(t, string_set | cstring_set) ? pt::string : pt::none; + case 'p': + return in(t, pointer_set | cstring_set) ? pt::pointer : pt::none; + default: + return pt::none; + } +} + +template +void vprintf(buffer& buf, basic_string_view format, + basic_format_args args) { + using iterator = basic_appender; + auto out = iterator(buf); + auto context = basic_printf_context(out, args); + auto parse_ctx = basic_format_parse_context(format); + + // Returns the argument with specified index or, if arg_index is -1, the next + // argument. + auto get_arg = [&](int arg_index) { + if (arg_index < 0) + arg_index = parse_ctx.next_arg_id(); + else + parse_ctx.check_arg_id(--arg_index); + return detail::get_arg(context, arg_index); + }; + + const Char* start = parse_ctx.begin(); + const Char* end = parse_ctx.end(); + auto it = start; + while (it != end) { + if (!find(it, end, '%', it)) { + it = end; // find leaves it == nullptr if it doesn't find '%'. + break; + } + Char c = *it++; + if (it != end && *it == c) { + write(out, basic_string_view(start, to_unsigned(it - start))); + start = ++it; + continue; + } + write(out, basic_string_view(start, to_unsigned(it - 1 - start))); + + auto specs = format_specs(); + specs.align = align::right; + + // Parse argument index, flags and width. + int arg_index = parse_header(it, end, specs, get_arg); + if (arg_index == 0) report_error("argument not found"); + + // Parse precision. + if (it != end && *it == '.') { + ++it; + c = it != end ? *it : 0; + if ('0' <= c && c <= '9') { + specs.precision = parse_nonnegative_int(it, end, 0); + } else if (c == '*') { + ++it; + specs.precision = + static_cast(get_arg(-1).visit(printf_precision_handler())); + } else { + specs.precision = 0; + } + } + + auto arg = get_arg(arg_index); + // For d, i, o, u, x, and X conversion specifiers, if a precision is + // specified, the '0' flag is ignored + if (specs.precision >= 0 && arg.is_integral()) { + // Ignore '0' for non-numeric types or if '-' present. + specs.fill = ' '; + } + if (specs.precision >= 0 && arg.type() == type::cstring_type) { + auto str = arg.visit(get_cstring()); + auto str_end = str + specs.precision; + auto nul = std::find(str, str_end, Char()); + auto sv = basic_string_view( + str, to_unsigned(nul != str_end ? nul - str : specs.precision)); + arg = make_arg>(sv); + } + if (specs.alt && arg.visit(is_zero_int())) specs.alt = false; + if (specs.fill.template get() == '0') { + if (arg.is_arithmetic() && specs.align != align::left) + specs.align = align::numeric; + else + specs.fill = ' '; // Ignore '0' flag for non-numeric types or if '-' + // flag is also present. + } + + // Parse length and convert the argument to the required type. + c = it != end ? *it++ : 0; + Char t = it != end ? *it : 0; + switch (c) { + case 'h': + if (t == 'h') { + ++it; + t = it != end ? *it : 0; + convert_arg(arg, t); + } else { + convert_arg(arg, t); + } + break; + case 'l': + if (t == 'l') { + ++it; + t = it != end ? *it : 0; + convert_arg(arg, t); + } else { + convert_arg(arg, t); + } + break; + case 'j': + convert_arg(arg, t); + break; + case 'z': + convert_arg(arg, t); + break; + case 't': + convert_arg(arg, t); + break; + case 'L': + // printf produces garbage when 'L' is omitted for long double, no + // need to do the same. + break; + default: + --it; + convert_arg(arg, c); + } + + // Parse type. + if (it == end) report_error("invalid format string"); + char type = static_cast(*it++); + if (arg.is_integral()) { + // Normalize type. + switch (type) { + case 'i': + case 'u': + type = 'd'; + break; + case 'c': + arg.visit(char_converter>(arg)); + break; + } + } + bool upper = false; + specs.type = parse_printf_presentation_type(type, arg.type(), upper); + if (specs.type == presentation_type::none) + report_error("invalid format specifier"); + specs.upper = upper; + + start = it; + + // Format argument. + arg.visit(printf_arg_formatter(out, specs, context)); + } + write(out, basic_string_view(start, to_unsigned(it - start))); +} +} // namespace detail + +using printf_context = basic_printf_context; +using wprintf_context = basic_printf_context; + +using printf_args = basic_format_args; +using wprintf_args = basic_format_args; + +/// Constructs an `format_arg_store` object that contains references to +/// arguments and can be implicitly converted to `printf_args`. +template +inline auto make_printf_args(T&... args) + -> decltype(fmt::make_format_args>(args...)) { + return fmt::make_format_args>(args...); +} + +template struct vprintf_args { + using type = basic_format_args>; +}; + +template +inline auto vsprintf(basic_string_view fmt, + typename vprintf_args::type args) + -> std::basic_string { + auto buf = basic_memory_buffer(); + detail::vprintf(buf, fmt, args); + return to_string(buf); +} + +/** + * Formats `args` according to specifications in `fmt` and returns the result + * as as string. + * + * **Example**: + * + * std::string message = fmt::sprintf("The answer is %d", 42); + */ +template > +inline auto sprintf(const S& fmt, const T&... args) -> std::basic_string { + return vsprintf(detail::to_string_view(fmt), + fmt::make_format_args>(args...)); +} + +template +inline auto vfprintf(std::FILE* f, basic_string_view fmt, + typename vprintf_args::type args) -> int { + auto buf = basic_memory_buffer(); + detail::vprintf(buf, fmt, args); + size_t size = buf.size(); + return std::fwrite(buf.data(), sizeof(Char), size, f) < size + ? -1 + : static_cast(size); +} + +/** + * Formats `args` according to specifications in `fmt` and writes the output + * to `f`. + * + * **Example**: + * + * fmt::fprintf(stderr, "Don't %s!", "panic"); + */ +template > +inline auto fprintf(std::FILE* f, const S& fmt, const T&... args) -> int { + return vfprintf(f, detail::to_string_view(fmt), + make_printf_args(args...)); +} + +template +FMT_DEPRECATED inline auto vprintf(basic_string_view fmt, + typename vprintf_args::type args) + -> int { + return vfprintf(stdout, fmt, args); +} + +/** + * Formats `args` according to specifications in `fmt` and writes the output + * to `stdout`. + * + * **Example**: + * + * fmt::printf("Elapsed time: %.2f seconds", 1.23); + */ +template +inline auto printf(string_view fmt, const T&... args) -> int { + return vfprintf(stdout, fmt, make_printf_args(args...)); +} +template +FMT_DEPRECATED inline auto printf(basic_string_view fmt, + const T&... args) -> int { + return vfprintf(stdout, fmt, make_printf_args(args...)); +} + +FMT_END_EXPORT +FMT_END_NAMESPACE + +#endif // FMT_PRINTF_H_ diff --git a/Submodules/fmt/include/fmt/ranges.h b/Submodules/fmt/include/fmt/ranges.h new file mode 100644 index 0000000..0d3dfbd --- /dev/null +++ b/Submodules/fmt/include/fmt/ranges.h @@ -0,0 +1,882 @@ +// Formatting library for C++ - range and tuple support +// +// Copyright (c) 2012 - present, Victor Zverovich and {fmt} contributors +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_RANGES_H_ +#define FMT_RANGES_H_ + +#ifndef FMT_MODULE +# include +# include +# include +# include +# include +# include +#endif + +#include "format.h" + +FMT_BEGIN_NAMESPACE + +FMT_EXPORT +enum class range_format { disabled, map, set, sequence, string, debug_string }; + +namespace detail { + +template class is_map { + template static auto check(U*) -> typename U::mapped_type; + template static void check(...); + + public: + static constexpr const bool value = + !std::is_void(nullptr))>::value; +}; + +template class is_set { + template static auto check(U*) -> typename U::key_type; + template static void check(...); + + public: + static constexpr const bool value = + !std::is_void(nullptr))>::value && !is_map::value; +}; + +template struct conditional_helper {}; + +template struct is_range_ : std::false_type {}; + +#if !FMT_MSC_VERSION || FMT_MSC_VERSION > 1800 + +# define FMT_DECLTYPE_RETURN(val) \ + ->decltype(val) { return val; } \ + static_assert( \ + true, "") // This makes it so that a semicolon is required after the + // macro, which helps clang-format handle the formatting. + +// C array overload +template +auto range_begin(const T (&arr)[N]) -> const T* { + return arr; +} +template +auto range_end(const T (&arr)[N]) -> const T* { + return arr + N; +} + +template +struct has_member_fn_begin_end_t : std::false_type {}; + +template +struct has_member_fn_begin_end_t().begin()), + decltype(std::declval().end())>> + : std::true_type {}; + +// Member function overloads. +template +auto range_begin(T&& rng) FMT_DECLTYPE_RETURN(static_cast(rng).begin()); +template +auto range_end(T&& rng) FMT_DECLTYPE_RETURN(static_cast(rng).end()); + +// ADL overloads. Only participate in overload resolution if member functions +// are not found. +template +auto range_begin(T&& rng) + -> enable_if_t::value, + decltype(begin(static_cast(rng)))> { + return begin(static_cast(rng)); +} +template +auto range_end(T&& rng) -> enable_if_t::value, + decltype(end(static_cast(rng)))> { + return end(static_cast(rng)); +} + +template +struct has_const_begin_end : std::false_type {}; +template +struct has_mutable_begin_end : std::false_type {}; + +template +struct has_const_begin_end< + T, void_t&>())), + decltype(detail::range_end( + std::declval&>()))>> + : std::true_type {}; + +template +struct has_mutable_begin_end< + T, void_t())), + decltype(detail::range_end(std::declval())), + // the extra int here is because older versions of MSVC don't + // SFINAE properly unless there are distinct types + int>> : std::true_type {}; + +template +struct is_range_ + : std::integral_constant::value || + has_mutable_begin_end::value)> {}; +# undef FMT_DECLTYPE_RETURN +#endif + +// tuple_size and tuple_element check. +template class is_tuple_like_ { + template + static auto check(U* p) -> decltype(std::tuple_size::value, int()); + template static void check(...); + + public: + static constexpr const bool value = + !std::is_void(nullptr))>::value; +}; + +// Check for integer_sequence +#if defined(__cpp_lib_integer_sequence) || FMT_MSC_VERSION >= 1900 +template +using integer_sequence = std::integer_sequence; +template using index_sequence = std::index_sequence; +template using make_index_sequence = std::make_index_sequence; +#else +template struct integer_sequence { + using value_type = T; + + static FMT_CONSTEXPR auto size() -> size_t { return sizeof...(N); } +}; + +template using index_sequence = integer_sequence; + +template +struct make_integer_sequence : make_integer_sequence {}; +template +struct make_integer_sequence : integer_sequence {}; + +template +using make_index_sequence = make_integer_sequence; +#endif + +template +using tuple_index_sequence = make_index_sequence::value>; + +template ::value> +class is_tuple_formattable_ { + public: + static constexpr const bool value = false; +}; +template class is_tuple_formattable_ { + template + static auto all_true(index_sequence, + integer_sequence= 0)...>) -> std::true_type; + static auto all_true(...) -> std::false_type; + + template + static auto check(index_sequence) -> decltype(all_true( + index_sequence{}, + integer_sequence::type, + C>::value)...>{})); + + public: + static constexpr const bool value = + decltype(check(tuple_index_sequence{}))::value; +}; + +template +FMT_CONSTEXPR void for_each(index_sequence, Tuple&& t, F&& f) { + using std::get; + // Using a free function get(Tuple) now. + const int unused[] = {0, ((void)f(get(t)), 0)...}; + ignore_unused(unused); +} + +template +FMT_CONSTEXPR void for_each(Tuple&& t, F&& f) { + for_each(tuple_index_sequence>(), + std::forward(t), std::forward(f)); +} + +template +void for_each2(index_sequence, Tuple1&& t1, Tuple2&& t2, F&& f) { + using std::get; + const int unused[] = {0, ((void)f(get(t1), get(t2)), 0)...}; + ignore_unused(unused); +} + +template +void for_each2(Tuple1&& t1, Tuple2&& t2, F&& f) { + for_each2(tuple_index_sequence>(), + std::forward(t1), std::forward(t2), + std::forward(f)); +} + +namespace tuple { +// Workaround a bug in MSVC 2019 (v140). +template +using result_t = std::tuple, Char>...>; + +using std::get; +template +auto get_formatters(index_sequence) + -> result_t(std::declval()))...>; +} // namespace tuple + +#if FMT_MSC_VERSION && FMT_MSC_VERSION < 1920 +// Older MSVC doesn't get the reference type correctly for arrays. +template struct range_reference_type_impl { + using type = decltype(*detail::range_begin(std::declval())); +}; + +template struct range_reference_type_impl { + using type = T&; +}; + +template +using range_reference_type = typename range_reference_type_impl::type; +#else +template +using range_reference_type = + decltype(*detail::range_begin(std::declval())); +#endif + +// We don't use the Range's value_type for anything, but we do need the Range's +// reference type, with cv-ref stripped. +template +using uncvref_type = remove_cvref_t>; + +template +FMT_CONSTEXPR auto maybe_set_debug_format(Formatter& f, bool set) + -> decltype(f.set_debug_format(set)) { + f.set_debug_format(set); +} +template +FMT_CONSTEXPR void maybe_set_debug_format(Formatter&, ...) {} + +template +struct range_format_kind_ + : std::integral_constant, T>::value + ? range_format::disabled + : is_map::value ? range_format::map + : is_set::value ? range_format::set + : range_format::sequence> {}; + +template +using range_format_constant = std::integral_constant; + +// These are not generic lambdas for compatibility with C++11. +template struct parse_empty_specs { + template FMT_CONSTEXPR void operator()(Formatter& f) { + f.parse(ctx); + detail::maybe_set_debug_format(f, true); + } + ParseContext& ctx; +}; +template struct format_tuple_element { + using char_type = typename FormatContext::char_type; + + template + void operator()(const formatter& f, const T& v) { + if (i > 0) ctx.advance_to(detail::copy(separator, ctx.out())); + ctx.advance_to(f.format(v, ctx)); + ++i; + } + + int i; + FormatContext& ctx; + basic_string_view separator; +}; + +} // namespace detail + +template struct is_tuple_like { + static constexpr const bool value = + detail::is_tuple_like_::value && !detail::is_range_::value; +}; + +template struct is_tuple_formattable { + static constexpr const bool value = + detail::is_tuple_formattable_::value; +}; + +template +struct formatter::value && + fmt::is_tuple_formattable::value>> { + private: + decltype(detail::tuple::get_formatters( + detail::tuple_index_sequence())) formatters_; + + basic_string_view separator_ = detail::string_literal{}; + basic_string_view opening_bracket_ = + detail::string_literal{}; + basic_string_view closing_bracket_ = + detail::string_literal{}; + + public: + FMT_CONSTEXPR formatter() {} + + FMT_CONSTEXPR void set_separator(basic_string_view sep) { + separator_ = sep; + } + + FMT_CONSTEXPR void set_brackets(basic_string_view open, + basic_string_view close) { + opening_bracket_ = open; + closing_bracket_ = close; + } + + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + auto it = ctx.begin(); + if (it != ctx.end() && *it != '}') report_error("invalid format specifier"); + detail::for_each(formatters_, detail::parse_empty_specs{ctx}); + return it; + } + + template + auto format(const Tuple& value, FormatContext& ctx) const + -> decltype(ctx.out()) { + ctx.advance_to(detail::copy(opening_bracket_, ctx.out())); + detail::for_each2( + formatters_, value, + detail::format_tuple_element{0, ctx, separator_}); + return detail::copy(closing_bracket_, ctx.out()); + } +}; + +template struct is_range { + static constexpr const bool value = + detail::is_range_::value && !detail::has_to_string_view::value; +}; + +namespace detail { +template struct range_mapper { + using mapper = arg_mapper; + + template , Context>::value)> + static auto map(T&& value) -> T&& { + return static_cast(value); + } + template , Context>::value)> + static auto map(T&& value) + -> decltype(mapper().map(static_cast(value))) { + return mapper().map(static_cast(value)); + } +}; + +template +using range_formatter_type = + formatter>{} + .map(std::declval()))>, + Char>; + +template +using maybe_const_range = + conditional_t::value, const R, R>; + +// Workaround a bug in MSVC 2015 and earlier. +#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1910 +template +struct is_formattable_delayed + : is_formattable>, Char> {}; +#endif +} // namespace detail + +template struct conjunction : std::true_type {}; +template struct conjunction

: P {}; +template +struct conjunction + : conditional_t, P1> {}; + +template +struct range_formatter; + +template +struct range_formatter< + T, Char, + enable_if_t>, + is_formattable>::value>> { + private: + detail::range_formatter_type underlying_; + basic_string_view separator_ = detail::string_literal{}; + basic_string_view opening_bracket_ = + detail::string_literal{}; + basic_string_view closing_bracket_ = + detail::string_literal{}; + bool is_debug = false; + + template ::value)> + auto write_debug_string(Output& out, It it, Sentinel end) const -> Output { + auto buf = basic_memory_buffer(); + for (; it != end; ++it) buf.push_back(*it); + auto specs = format_specs(); + specs.type = presentation_type::debug; + return detail::write( + out, basic_string_view(buf.data(), buf.size()), specs); + } + + template ::value)> + auto write_debug_string(Output& out, It, Sentinel) const -> Output { + return out; + } + + public: + FMT_CONSTEXPR range_formatter() {} + + FMT_CONSTEXPR auto underlying() -> detail::range_formatter_type& { + return underlying_; + } + + FMT_CONSTEXPR void set_separator(basic_string_view sep) { + separator_ = sep; + } + + FMT_CONSTEXPR void set_brackets(basic_string_view open, + basic_string_view close) { + opening_bracket_ = open; + closing_bracket_ = close; + } + + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + auto it = ctx.begin(); + auto end = ctx.end(); + detail::maybe_set_debug_format(underlying_, true); + if (it == end) return underlying_.parse(ctx); + + switch (detail::to_ascii(*it)) { + case 'n': + set_brackets({}, {}); + ++it; + break; + case '?': + is_debug = true; + set_brackets({}, {}); + ++it; + if (it == end || *it != 's') report_error("invalid format specifier"); + FMT_FALLTHROUGH; + case 's': + if (!std::is_same::value) + report_error("invalid format specifier"); + if (!is_debug) { + set_brackets(detail::string_literal{}, + detail::string_literal{}); + set_separator({}); + detail::maybe_set_debug_format(underlying_, false); + } + ++it; + return it; + } + + if (it != end && *it != '}') { + if (*it != ':') report_error("invalid format specifier"); + detail::maybe_set_debug_format(underlying_, false); + ++it; + } + + ctx.advance_to(it); + return underlying_.parse(ctx); + } + + template + auto format(R&& range, FormatContext& ctx) const -> decltype(ctx.out()) { + auto mapper = detail::range_mapper>(); + auto out = ctx.out(); + auto it = detail::range_begin(range); + auto end = detail::range_end(range); + if (is_debug) return write_debug_string(out, std::move(it), end); + + out = detail::copy(opening_bracket_, out); + int i = 0; + for (; it != end; ++it) { + if (i > 0) out = detail::copy(separator_, out); + ctx.advance_to(out); + auto&& item = *it; // Need an lvalue + out = underlying_.format(mapper.map(item), ctx); + ++i; + } + out = detail::copy(closing_bracket_, out); + return out; + } +}; + +FMT_EXPORT +template +struct range_format_kind + : conditional_t< + is_range::value, detail::range_format_kind_, + std::integral_constant> {}; + +template +struct formatter< + R, Char, + enable_if_t::value != range_format::disabled && + range_format_kind::value != range_format::map && + range_format_kind::value != range_format::string && + range_format_kind::value != range_format::debug_string> +// Workaround a bug in MSVC 2015 and earlier. +#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1910 + , + detail::is_formattable_delayed +#endif + >::value>> { + private: + using range_type = detail::maybe_const_range; + range_formatter, Char> range_formatter_; + + public: + using nonlocking = void; + + FMT_CONSTEXPR formatter() { + if (detail::const_check(range_format_kind::value != + range_format::set)) + return; + range_formatter_.set_brackets(detail::string_literal{}, + detail::string_literal{}); + } + + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return range_formatter_.parse(ctx); + } + + template + auto format(range_type& range, FormatContext& ctx) const + -> decltype(ctx.out()) { + return range_formatter_.format(range, ctx); + } +}; + +// A map formatter. +template +struct formatter< + R, Char, + enable_if_t::value == range_format::map>> { + private: + using map_type = detail::maybe_const_range; + using element_type = detail::uncvref_type; + + decltype(detail::tuple::get_formatters( + detail::tuple_index_sequence())) formatters_; + bool no_delimiters_ = false; + + public: + FMT_CONSTEXPR formatter() {} + + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + auto it = ctx.begin(); + auto end = ctx.end(); + if (it != end) { + if (detail::to_ascii(*it) == 'n') { + no_delimiters_ = true; + ++it; + } + if (it != end && *it != '}') { + if (*it != ':') report_error("invalid format specifier"); + ++it; + } + ctx.advance_to(it); + } + detail::for_each(formatters_, detail::parse_empty_specs{ctx}); + return it; + } + + template + auto format(map_type& map, FormatContext& ctx) const -> decltype(ctx.out()) { + auto out = ctx.out(); + basic_string_view open = detail::string_literal{}; + if (!no_delimiters_) out = detail::copy(open, out); + int i = 0; + auto mapper = detail::range_mapper>(); + basic_string_view sep = detail::string_literal{}; + for (auto&& value : map) { + if (i > 0) out = detail::copy(sep, out); + ctx.advance_to(out); + detail::for_each2(formatters_, mapper.map(value), + detail::format_tuple_element{ + 0, ctx, detail::string_literal{}}); + ++i; + } + basic_string_view close = detail::string_literal{}; + if (!no_delimiters_) out = detail::copy(close, out); + return out; + } +}; + +// A (debug_)string formatter. +template +struct formatter< + R, Char, + enable_if_t::value == range_format::string || + range_format_kind::value == + range_format::debug_string>> { + private: + using range_type = detail::maybe_const_range; + using string_type = + conditional_t, + decltype(detail::range_begin(std::declval())), + decltype(detail::range_end(std::declval()))>::value, + detail::std_string_view, std::basic_string>; + + formatter underlying_; + + public: + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return underlying_.parse(ctx); + } + + template + auto format(range_type& range, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto out = ctx.out(); + if (detail::const_check(range_format_kind::value == + range_format::debug_string)) + *out++ = '"'; + out = underlying_.format( + string_type{detail::range_begin(range), detail::range_end(range)}, ctx); + if (detail::const_check(range_format_kind::value == + range_format::debug_string)) + *out++ = '"'; + return out; + } +}; + +template +struct join_view : detail::view { + It begin; + Sentinel end; + basic_string_view sep; + + join_view(It b, Sentinel e, basic_string_view s) + : begin(std::move(b)), end(e), sep(s) {} +}; + +template +struct formatter, Char> { + private: + using value_type = +#ifdef __cpp_lib_ranges + std::iter_value_t; +#else + typename std::iterator_traits::value_type; +#endif + formatter, Char> value_formatter_; + + using view_ref = conditional_t::value, + const join_view&, + join_view&&>; + + public: + using nonlocking = void; + + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> const Char* { + return value_formatter_.parse(ctx); + } + + template + auto format(view_ref& value, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto it = std::forward(value).begin; + auto out = ctx.out(); + if (it == value.end) return out; + out = value_formatter_.format(*it, ctx); + ++it; + while (it != value.end) { + out = detail::copy(value.sep.begin(), value.sep.end(), out); + ctx.advance_to(out); + out = value_formatter_.format(*it, ctx); + ++it; + } + return out; + } +}; + +/// Returns a view that formats the iterator range `[begin, end)` with elements +/// separated by `sep`. +template +auto join(It begin, Sentinel end, string_view sep) -> join_view { + return {std::move(begin), end, sep}; +} + +/** + * Returns a view that formats `range` with elements separated by `sep`. + * + * **Example**: + * + * auto v = std::vector{1, 2, 3}; + * fmt::print("{}", fmt::join(v, ", ")); + * // Output: 1, 2, 3 + * + * `fmt::join` applies passed format specifiers to the range elements: + * + * fmt::print("{:02}", fmt::join(v, ", ")); + * // Output: 01, 02, 03 + */ +template +auto join(Range&& r, string_view sep) + -> join_view { + return {detail::range_begin(r), detail::range_end(r), sep}; +} + +template struct tuple_join_view : detail::view { + const std::tuple& tuple; + basic_string_view sep; + + tuple_join_view(const std::tuple& t, basic_string_view s) + : tuple(t), sep{s} {} +}; + +// Define FMT_TUPLE_JOIN_SPECIFIERS to enable experimental format specifiers +// support in tuple_join. It is disabled by default because of issues with +// the dynamic width and precision. +#ifndef FMT_TUPLE_JOIN_SPECIFIERS +# define FMT_TUPLE_JOIN_SPECIFIERS 0 +#endif + +template +struct formatter, Char> { + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return do_parse(ctx, std::integral_constant()); + } + + template + auto format(const tuple_join_view& value, + FormatContext& ctx) const -> typename FormatContext::iterator { + return do_format(value, ctx, + std::integral_constant()); + } + + private: + std::tuple::type, Char>...> formatters_; + + template + FMT_CONSTEXPR auto do_parse(ParseContext& ctx, + std::integral_constant) + -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template + FMT_CONSTEXPR auto do_parse(ParseContext& ctx, + std::integral_constant) + -> decltype(ctx.begin()) { + auto end = ctx.begin(); +#if FMT_TUPLE_JOIN_SPECIFIERS + end = std::get(formatters_).parse(ctx); + if (N > 1) { + auto end1 = do_parse(ctx, std::integral_constant()); + if (end != end1) + report_error("incompatible format specs for tuple elements"); + } +#endif + return end; + } + + template + auto do_format(const tuple_join_view&, FormatContext& ctx, + std::integral_constant) const -> + typename FormatContext::iterator { + return ctx.out(); + } + + template + auto do_format(const tuple_join_view& value, FormatContext& ctx, + std::integral_constant) const -> + typename FormatContext::iterator { + auto out = std::get(formatters_) + .format(std::get(value.tuple), ctx); + if (N <= 1) return out; + out = detail::copy(value.sep, out); + ctx.advance_to(out); + return do_format(value, ctx, std::integral_constant()); + } +}; + +namespace detail { +// Check if T has an interface like a container adaptor (e.g. std::stack, +// std::queue, std::priority_queue). +template class is_container_adaptor_like { + template static auto check(U* p) -> typename U::container_type; + template static void check(...); + + public: + static constexpr const bool value = + !std::is_void(nullptr))>::value; +}; + +template struct all { + const Container& c; + auto begin() const -> typename Container::const_iterator { return c.begin(); } + auto end() const -> typename Container::const_iterator { return c.end(); } +}; +} // namespace detail + +template +struct formatter< + T, Char, + enable_if_t, + bool_constant::value == + range_format::disabled>>::value>> + : formatter, Char> { + using all = detail::all; + template + auto format(const T& t, FormatContext& ctx) const -> decltype(ctx.out()) { + struct getter : T { + static auto get(const T& t) -> all { + return {t.*(&getter::c)}; // Access c through the derived class. + } + }; + return formatter::format(getter::get(t), ctx); + } +}; + +FMT_BEGIN_EXPORT + +/** + * Returns an object that formats `std::tuple` with elements separated by `sep`. + * + * **Example**: + * + * auto t = std::tuple{1, 'a'}; + * fmt::print("{}", fmt::join(t, ", ")); + * // Output: 1, a + */ +template +FMT_CONSTEXPR auto join(const std::tuple& tuple, string_view sep) + -> tuple_join_view { + return {tuple, sep}; +} + +/** + * Returns an object that formats `std::initializer_list` with elements + * separated by `sep`. + * + * **Example**: + * + * fmt::print("{}", fmt::join({1, 2, 3}, ", ")); + * // Output: "1, 2, 3" + */ +template +auto join(std::initializer_list list, string_view sep) + -> join_view { + return join(std::begin(list), std::end(list), sep); +} + +FMT_END_EXPORT +FMT_END_NAMESPACE + +#endif // FMT_RANGES_H_ diff --git a/Submodules/fmt/include/fmt/std.h b/Submodules/fmt/include/fmt/std.h new file mode 100644 index 0000000..fb43940 --- /dev/null +++ b/Submodules/fmt/include/fmt/std.h @@ -0,0 +1,699 @@ +// Formatting library for C++ - formatters for standard library types +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_STD_H_ +#define FMT_STD_H_ + +#include "format.h" +#include "ostream.h" + +#ifndef FMT_MODULE +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include + +// Check FMT_CPLUSPLUS to suppress a bogus warning in MSVC. +# if FMT_CPLUSPLUS >= 201703L +# if FMT_HAS_INCLUDE() +# include +# endif +# if FMT_HAS_INCLUDE() +# include +# endif +# if FMT_HAS_INCLUDE() +# include +# endif +# endif +// Use > instead of >= in the version check because may be +// available after C++17 but before C++20 is marked as implemented. +# if FMT_CPLUSPLUS > 201703L && FMT_HAS_INCLUDE() +# include +# endif +# if FMT_CPLUSPLUS > 202002L && FMT_HAS_INCLUDE() +# include +# endif +#endif // FMT_MODULE + +#if FMT_HAS_INCLUDE() +# include +#endif + +// GCC 4 does not support FMT_HAS_INCLUDE. +#if FMT_HAS_INCLUDE() || defined(__GLIBCXX__) +# include +// Android NDK with gabi++ library on some architectures does not implement +// abi::__cxa_demangle(). +# ifndef __GABIXX_CXXABI_H__ +# define FMT_HAS_ABI_CXA_DEMANGLE +# endif +#endif + +// For older Xcode versions, __cpp_lib_xxx flags are inaccurately defined. +#ifndef FMT_CPP_LIB_FILESYSTEM +# ifdef __cpp_lib_filesystem +# define FMT_CPP_LIB_FILESYSTEM __cpp_lib_filesystem +# else +# define FMT_CPP_LIB_FILESYSTEM 0 +# endif +#endif + +#ifndef FMT_CPP_LIB_VARIANT +# ifdef __cpp_lib_variant +# define FMT_CPP_LIB_VARIANT __cpp_lib_variant +# else +# define FMT_CPP_LIB_VARIANT 0 +# endif +#endif + +#if FMT_CPP_LIB_FILESYSTEM +FMT_BEGIN_NAMESPACE + +namespace detail { + +template +auto get_path_string(const std::filesystem::path& p, + const std::basic_string& native) { + if constexpr (std::is_same_v && std::is_same_v) + return to_utf8(native, to_utf8_error_policy::replace); + else + return p.string(); +} + +template +void write_escaped_path(basic_memory_buffer& quoted, + const std::filesystem::path& p, + const std::basic_string& native) { + if constexpr (std::is_same_v && + std::is_same_v) { + auto buf = basic_memory_buffer(); + write_escaped_string(std::back_inserter(buf), native); + bool valid = to_utf8::convert(quoted, {buf.data(), buf.size()}); + FMT_ASSERT(valid, "invalid utf16"); + } else if constexpr (std::is_same_v) { + write_escaped_string( + std::back_inserter(quoted), native); + } else { + write_escaped_string(std::back_inserter(quoted), p.string()); + } +} + +} // namespace detail + +FMT_EXPORT +template struct formatter { + private: + format_specs specs_; + detail::arg_ref width_ref_; + bool debug_ = false; + char path_type_ = 0; + + public: + FMT_CONSTEXPR void set_debug_format(bool set = true) { debug_ = set; } + + template FMT_CONSTEXPR auto parse(ParseContext& ctx) { + auto it = ctx.begin(), end = ctx.end(); + if (it == end) return it; + + it = detail::parse_align(it, end, specs_); + if (it == end) return it; + + it = detail::parse_dynamic_spec(it, end, specs_.width, width_ref_, ctx); + if (it != end && *it == '?') { + debug_ = true; + ++it; + } + if (it != end && (*it == 'g')) path_type_ = detail::to_ascii(*it++); + return it; + } + + template + auto format(const std::filesystem::path& p, FormatContext& ctx) const { + auto specs = specs_; + auto path_string = + !path_type_ ? p.native() + : p.generic_string(); + + detail::handle_dynamic_spec(specs.width, width_ref_, + ctx); + if (!debug_) { + auto s = detail::get_path_string(p, path_string); + return detail::write(ctx.out(), basic_string_view(s), specs); + } + auto quoted = basic_memory_buffer(); + detail::write_escaped_path(quoted, p, path_string); + return detail::write(ctx.out(), + basic_string_view(quoted.data(), quoted.size()), + specs); + } +}; + +class path : public std::filesystem::path { + public: + auto display_string() const -> std::string { + const std::filesystem::path& base = *this; + return fmt::format(FMT_STRING("{}"), base); + } + auto system_string() const -> std::string { return string(); } + + auto generic_display_string() const -> std::string { + const std::filesystem::path& base = *this; + return fmt::format(FMT_STRING("{:g}"), base); + } + auto generic_system_string() const -> std::string { return generic_string(); } +}; + +FMT_END_NAMESPACE +#endif // FMT_CPP_LIB_FILESYSTEM + +FMT_BEGIN_NAMESPACE +FMT_EXPORT +template +struct formatter, Char> : nested_formatter { + private: + // Functor because C++11 doesn't support generic lambdas. + struct writer { + const std::bitset& bs; + + template + FMT_CONSTEXPR auto operator()(OutputIt out) -> OutputIt { + for (auto pos = N; pos > 0; --pos) { + out = detail::write(out, bs[pos - 1] ? Char('1') : Char('0')); + } + + return out; + } + }; + + public: + template + auto format(const std::bitset& bs, FormatContext& ctx) const + -> decltype(ctx.out()) { + return write_padded(ctx, writer{bs}); + } +}; + +FMT_EXPORT +template +struct formatter : basic_ostream_formatter {}; +FMT_END_NAMESPACE + +#ifdef __cpp_lib_optional +FMT_BEGIN_NAMESPACE +FMT_EXPORT +template +struct formatter, Char, + std::enable_if_t::value>> { + private: + formatter underlying_; + static constexpr basic_string_view optional = + detail::string_literal{}; + static constexpr basic_string_view none = + detail::string_literal{}; + + template + FMT_CONSTEXPR static auto maybe_set_debug_format(U& u, bool set) + -> decltype(u.set_debug_format(set)) { + u.set_debug_format(set); + } + + template + FMT_CONSTEXPR static void maybe_set_debug_format(U&, ...) {} + + public: + template FMT_CONSTEXPR auto parse(ParseContext& ctx) { + maybe_set_debug_format(underlying_, true); + return underlying_.parse(ctx); + } + + template + auto format(const std::optional& opt, FormatContext& ctx) const + -> decltype(ctx.out()) { + if (!opt) return detail::write(ctx.out(), none); + + auto out = ctx.out(); + out = detail::write(out, optional); + ctx.advance_to(out); + out = underlying_.format(*opt, ctx); + return detail::write(out, ')'); + } +}; +FMT_END_NAMESPACE +#endif // __cpp_lib_optional + +#if defined(__cpp_lib_expected) || FMT_CPP_LIB_VARIANT + +FMT_BEGIN_NAMESPACE +namespace detail { + +template +auto write_escaped_alternative(OutputIt out, const T& v) -> OutputIt { + if constexpr (has_to_string_view::value) + return write_escaped_string(out, detail::to_string_view(v)); + if constexpr (std::is_same_v) return write_escaped_char(out, v); + return write(out, v); +} + +} // namespace detail + +FMT_END_NAMESPACE +#endif + +#ifdef __cpp_lib_expected +FMT_BEGIN_NAMESPACE + +FMT_EXPORT +template +struct formatter, Char, + std::enable_if_t::value && + is_formattable::value>> { + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template + auto format(const std::expected& value, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto out = ctx.out(); + + if (value.has_value()) { + out = detail::write(out, "expected("); + out = detail::write_escaped_alternative(out, *value); + } else { + out = detail::write(out, "unexpected("); + out = detail::write_escaped_alternative(out, value.error()); + } + *out++ = ')'; + return out; + } +}; +FMT_END_NAMESPACE +#endif // __cpp_lib_expected + +#ifdef __cpp_lib_source_location +FMT_BEGIN_NAMESPACE +FMT_EXPORT +template <> struct formatter { + template FMT_CONSTEXPR auto parse(ParseContext& ctx) { + return ctx.begin(); + } + + template + auto format(const std::source_location& loc, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto out = ctx.out(); + out = detail::write(out, loc.file_name()); + out = detail::write(out, ':'); + out = detail::write(out, loc.line()); + out = detail::write(out, ':'); + out = detail::write(out, loc.column()); + out = detail::write(out, ": "); + out = detail::write(out, loc.function_name()); + return out; + } +}; +FMT_END_NAMESPACE +#endif + +#if FMT_CPP_LIB_VARIANT +FMT_BEGIN_NAMESPACE +namespace detail { + +template +using variant_index_sequence = + std::make_index_sequence::value>; + +template struct is_variant_like_ : std::false_type {}; +template +struct is_variant_like_> : std::true_type {}; + +// formattable element check. +template class is_variant_formattable_ { + template + static std::conjunction< + is_formattable, C>...> + check(std::index_sequence); + + public: + static constexpr const bool value = + decltype(check(variant_index_sequence{}))::value; +}; + +} // namespace detail + +template struct is_variant_like { + static constexpr const bool value = detail::is_variant_like_::value; +}; + +template struct is_variant_formattable { + static constexpr const bool value = + detail::is_variant_formattable_::value; +}; + +FMT_EXPORT +template struct formatter { + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template + auto format(const std::monostate&, FormatContext& ctx) const + -> decltype(ctx.out()) { + return detail::write(ctx.out(), "monostate"); + } +}; + +FMT_EXPORT +template +struct formatter< + Variant, Char, + std::enable_if_t, is_variant_formattable>>> { + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template + auto format(const Variant& value, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto out = ctx.out(); + + out = detail::write(out, "variant("); + FMT_TRY { + std::visit( + [&](const auto& v) { + out = detail::write_escaped_alternative(out, v); + }, + value); + } + FMT_CATCH(const std::bad_variant_access&) { + detail::write(out, "valueless by exception"); + } + *out++ = ')'; + return out; + } +}; +FMT_END_NAMESPACE +#endif // FMT_CPP_LIB_VARIANT + +FMT_BEGIN_NAMESPACE +FMT_EXPORT +template struct formatter { + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template + FMT_CONSTEXPR auto format(const std::error_code& ec, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto out = ctx.out(); + out = detail::write_bytes(out, ec.category().name(), format_specs()); + out = detail::write(out, Char(':')); + out = detail::write(out, ec.value()); + return out; + } +}; + +#if FMT_USE_RTTI +namespace detail { + +template +auto write_demangled_name(OutputIt out, const std::type_info& ti) -> OutputIt { +# ifdef FMT_HAS_ABI_CXA_DEMANGLE + int status = 0; + std::size_t size = 0; + std::unique_ptr demangled_name_ptr( + abi::__cxa_demangle(ti.name(), nullptr, &size, &status), &std::free); + + string_view demangled_name_view; + if (demangled_name_ptr) { + demangled_name_view = demangled_name_ptr.get(); + + // Normalization of stdlib inline namespace names. + // libc++ inline namespaces. + // std::__1::* -> std::* + // std::__1::__fs::* -> std::* + // libstdc++ inline namespaces. + // std::__cxx11::* -> std::* + // std::filesystem::__cxx11::* -> std::filesystem::* + if (demangled_name_view.starts_with("std::")) { + char* begin = demangled_name_ptr.get(); + char* to = begin + 5; // std:: + for (char *from = to, *end = begin + demangled_name_view.size(); + from < end;) { + // This is safe, because demangled_name is NUL-terminated. + if (from[0] == '_' && from[1] == '_') { + char* next = from + 1; + while (next < end && *next != ':') next++; + if (next[0] == ':' && next[1] == ':') { + from = next + 2; + continue; + } + } + *to++ = *from++; + } + demangled_name_view = {begin, detail::to_unsigned(to - begin)}; + } + } else { + demangled_name_view = string_view(ti.name()); + } + return detail::write_bytes(out, demangled_name_view); +# elif FMT_MSC_VERSION + const string_view demangled_name(ti.name()); + for (std::size_t i = 0; i < demangled_name.size(); ++i) { + auto sub = demangled_name; + sub.remove_prefix(i); + if (sub.starts_with("enum ")) { + i += 4; + continue; + } + if (sub.starts_with("class ") || sub.starts_with("union ")) { + i += 5; + continue; + } + if (sub.starts_with("struct ")) { + i += 6; + continue; + } + if (*sub.begin() != ' ') *out++ = *sub.begin(); + } + return out; +# else + return detail::write_bytes(out, string_view(ti.name())); +# endif +} + +} // namespace detail + +FMT_EXPORT +template +struct formatter { + public: + FMT_CONSTEXPR auto parse(basic_format_parse_context& ctx) + -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template + auto format(const std::type_info& ti, Context& ctx) const + -> decltype(ctx.out()) { + return detail::write_demangled_name(ctx.out(), ti); + } +}; +#endif + +FMT_EXPORT +template +struct formatter< + T, Char, // DEPRECATED! Mixing code unit types. + typename std::enable_if::value>::type> { + private: + bool with_typename_ = false; + + public: + FMT_CONSTEXPR auto parse(basic_format_parse_context& ctx) + -> decltype(ctx.begin()) { + auto it = ctx.begin(); + auto end = ctx.end(); + if (it == end || *it == '}') return it; + if (*it == 't') { + ++it; + with_typename_ = FMT_USE_RTTI != 0; + } + return it; + } + + template + auto format(const std::exception& ex, Context& ctx) const + -> decltype(ctx.out()) { + auto out = ctx.out(); +#if FMT_USE_RTTI + if (with_typename_) { + out = detail::write_demangled_name(out, typeid(ex)); + *out++ = ':'; + *out++ = ' '; + } +#endif + return detail::write_bytes(out, string_view(ex.what())); + } +}; + +namespace detail { + +template +struct has_flip : std::false_type {}; + +template +struct has_flip().flip())>> + : std::true_type {}; + +template struct is_bit_reference_like { + static constexpr const bool value = + std::is_convertible::value && + std::is_nothrow_assignable::value && has_flip::value; +}; + +#ifdef _LIBCPP_VERSION + +// Workaround for libc++ incompatibility with C++ standard. +// According to the Standard, `bitset::operator[] const` returns bool. +template +struct is_bit_reference_like> { + static constexpr const bool value = true; +}; + +#endif + +} // namespace detail + +// We can't use std::vector::reference and +// std::bitset::reference because the compiler can't deduce Allocator and N +// in partial specialization. +FMT_EXPORT +template +struct formatter::value>> + : formatter { + template + FMT_CONSTEXPR auto format(const BitRef& v, FormatContext& ctx) const + -> decltype(ctx.out()) { + return formatter::format(v, ctx); + } +}; + +template +auto ptr(const std::unique_ptr& p) -> const void* { + return p.get(); +} +template auto ptr(const std::shared_ptr& p) -> const void* { + return p.get(); +} + +FMT_EXPORT +template +struct formatter, Char, + enable_if_t::value>> + : formatter { + template + auto format(const std::atomic& v, FormatContext& ctx) const + -> decltype(ctx.out()) { + return formatter::format(v.load(), ctx); + } +}; + +#ifdef __cpp_lib_atomic_flag_test +FMT_EXPORT +template +struct formatter : formatter { + template + auto format(const std::atomic_flag& v, FormatContext& ctx) const + -> decltype(ctx.out()) { + return formatter::format(v.test(), ctx); + } +}; +#endif // __cpp_lib_atomic_flag_test + +FMT_EXPORT +template struct formatter, Char> { + private: + detail::dynamic_format_specs specs_; + + template + FMT_CONSTEXPR auto do_format(const std::complex& c, + detail::dynamic_format_specs& specs, + FormatContext& ctx, OutputIt out) const + -> OutputIt { + if (c.real() != 0) { + *out++ = Char('('); + out = detail::write(out, c.real(), specs, ctx.locale()); + specs.sign = sign::plus; + out = detail::write(out, c.imag(), specs, ctx.locale()); + if (!detail::isfinite(c.imag())) *out++ = Char(' '); + *out++ = Char('i'); + *out++ = Char(')'); + return out; + } + out = detail::write(out, c.imag(), specs, ctx.locale()); + if (!detail::isfinite(c.imag())) *out++ = Char(' '); + *out++ = Char('i'); + return out; + } + + public: + FMT_CONSTEXPR auto parse(basic_format_parse_context& ctx) + -> decltype(ctx.begin()) { + if (ctx.begin() == ctx.end() || *ctx.begin() == '}') return ctx.begin(); + return parse_format_specs(ctx.begin(), ctx.end(), specs_, ctx, + detail::type_constant::value); + } + + template + auto format(const std::complex& c, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto specs = specs_; + if (specs.width_ref.kind != detail::arg_id_kind::none || + specs.precision_ref.kind != detail::arg_id_kind::none) { + detail::handle_dynamic_spec(specs.width, + specs.width_ref, ctx); + detail::handle_dynamic_spec( + specs.precision, specs.precision_ref, ctx); + } + + if (specs.width == 0) return do_format(c, specs, ctx, ctx.out()); + auto buf = basic_memory_buffer(); + + auto outer_specs = format_specs(); + outer_specs.width = specs.width; + outer_specs.fill = specs.fill; + outer_specs.align = specs.align; + + specs.width = 0; + specs.fill = {}; + specs.align = align::none; + + do_format(c, specs, ctx, basic_appender(buf)); + return detail::write(ctx.out(), + basic_string_view(buf.data(), buf.size()), + outer_specs); + } +}; + +FMT_END_NAMESPACE +#endif // FMT_STD_H_ diff --git a/Submodules/fmt/include/fmt/xchar.h b/Submodules/fmt/include/fmt/xchar.h new file mode 100644 index 0000000..b1f39ed --- /dev/null +++ b/Submodules/fmt/include/fmt/xchar.h @@ -0,0 +1,322 @@ +// Formatting library for C++ - optional wchar_t and exotic character support +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_XCHAR_H_ +#define FMT_XCHAR_H_ + +#include "color.h" +#include "format.h" +#include "ranges.h" + +#ifndef FMT_MODULE +# include +# if !defined(FMT_STATIC_THOUSANDS_SEPARATOR) +# include +# endif +#endif + +FMT_BEGIN_NAMESPACE +namespace detail { + +template +using is_exotic_char = bool_constant::value>; + +template struct format_string_char {}; + +template +struct format_string_char< + S, void_t())))>> { + using type = char_t; +}; + +template +struct format_string_char::value>> { + using type = typename S::char_type; +}; + +template +using format_string_char_t = typename format_string_char::type; + +inline auto write_loc(basic_appender out, loc_value value, + const format_specs& specs, locale_ref loc) -> bool { +#ifndef FMT_STATIC_THOUSANDS_SEPARATOR + auto& numpunct = + std::use_facet>(loc.get()); + auto separator = std::wstring(); + auto grouping = numpunct.grouping(); + if (!grouping.empty()) separator = std::wstring(1, numpunct.thousands_sep()); + return value.visit(loc_writer{out, specs, separator, grouping, {}}); +#endif + return false; +} +} // namespace detail + +FMT_BEGIN_EXPORT + +using wstring_view = basic_string_view; +using wformat_parse_context = basic_format_parse_context; +using wformat_context = buffered_context; +using wformat_args = basic_format_args; +using wmemory_buffer = basic_memory_buffer; + +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 +// Workaround broken conversion on older gcc. +template using wformat_string = wstring_view; +inline auto runtime(wstring_view s) -> wstring_view { return s; } +#else +template +using wformat_string = basic_format_string...>; +inline auto runtime(wstring_view s) -> runtime_format_string { + return {{s}}; +} +#endif + +template <> struct is_char : std::true_type {}; +template <> struct is_char : std::true_type {}; +template <> struct is_char : std::true_type {}; + +#ifdef __cpp_char8_t +template <> +struct is_char : bool_constant {}; +#endif + +template +constexpr auto make_wformat_args(T&... args) + -> decltype(fmt::make_format_args(args...)) { + return fmt::make_format_args(args...); +} + +inline namespace literals { +#if FMT_USE_USER_DEFINED_LITERALS && !FMT_USE_NONTYPE_TEMPLATE_ARGS +constexpr auto operator""_a(const wchar_t* s, size_t) + -> detail::udl_arg { + return {s}; +} +#endif +} // namespace literals + +template +auto join(It begin, Sentinel end, wstring_view sep) + -> join_view { + return {begin, end, sep}; +} + +template +auto join(Range&& range, wstring_view sep) + -> join_view, detail::sentinel_t, + wchar_t> { + return join(std::begin(range), std::end(range), sep); +} + +template +auto join(std::initializer_list list, wstring_view sep) + -> join_view { + return join(std::begin(list), std::end(list), sep); +} + +template +auto join(const std::tuple& tuple, basic_string_view sep) + -> tuple_join_view { + return {tuple, sep}; +} + +template ::value)> +auto vformat(basic_string_view format_str, + typename detail::vformat_args::type args) + -> std::basic_string { + auto buf = basic_memory_buffer(); + detail::vformat_to(buf, format_str, args); + return to_string(buf); +} + +template +auto format(wformat_string fmt, T&&... args) -> std::wstring { + return vformat(fmt::wstring_view(fmt), fmt::make_wformat_args(args...)); +} + +template +auto format_to(OutputIt out, wformat_string fmt, T&&... args) + -> OutputIt { + return vformat_to(out, fmt::wstring_view(fmt), + fmt::make_wformat_args(args...)); +} + +// Pass char_t as a default template parameter instead of using +// std::basic_string> to reduce the symbol size. +template , + FMT_ENABLE_IF(!std::is_same::value && + !std::is_same::value)> +auto format(const S& format_str, T&&... args) -> std::basic_string { + return vformat(detail::to_string_view(format_str), + fmt::make_format_args>(args...)); +} + +template , + FMT_ENABLE_IF(detail::is_locale::value&& + detail::is_exotic_char::value)> +inline auto vformat(const Locale& loc, const S& format_str, + typename detail::vformat_args::type args) + -> std::basic_string { + return detail::vformat(loc, detail::to_string_view(format_str), args); +} + +template , + FMT_ENABLE_IF(detail::is_locale::value&& + detail::is_exotic_char::value)> +inline auto format(const Locale& loc, const S& format_str, T&&... args) + -> std::basic_string { + return detail::vformat( + loc, detail::to_string_view(format_str), + fmt::make_format_args>(args...)); +} + +template , + FMT_ENABLE_IF(detail::is_output_iterator::value&& + detail::is_exotic_char::value)> +auto vformat_to(OutputIt out, const S& format_str, + typename detail::vformat_args::type args) -> OutputIt { + auto&& buf = detail::get_buffer(out); + detail::vformat_to(buf, detail::to_string_view(format_str), args); + return detail::get_iterator(buf, out); +} + +template , + FMT_ENABLE_IF(detail::is_output_iterator::value && + !std::is_same::value && + !std::is_same::value)> +inline auto format_to(OutputIt out, const S& fmt, T&&... args) -> OutputIt { + return vformat_to(out, detail::to_string_view(fmt), + fmt::make_format_args>(args...)); +} + +template , + FMT_ENABLE_IF(detail::is_output_iterator::value&& + detail::is_locale::value&& + detail::is_exotic_char::value)> +inline auto vformat_to(OutputIt out, const Locale& loc, const S& format_str, + typename detail::vformat_args::type args) + -> OutputIt { + auto&& buf = detail::get_buffer(out); + vformat_to(buf, detail::to_string_view(format_str), args, + detail::locale_ref(loc)); + return detail::get_iterator(buf, out); +} + +template , + bool enable = detail::is_output_iterator::value && + detail::is_locale::value && + detail::is_exotic_char::value> +inline auto format_to(OutputIt out, const Locale& loc, const S& format_str, + T&&... args) -> + typename std::enable_if::type { + return vformat_to(out, loc, detail::to_string_view(format_str), + fmt::make_format_args>(args...)); +} + +template ::value&& + detail::is_exotic_char::value)> +inline auto vformat_to_n(OutputIt out, size_t n, + basic_string_view format_str, + typename detail::vformat_args::type args) + -> format_to_n_result { + using traits = detail::fixed_buffer_traits; + auto buf = detail::iterator_buffer(out, n); + detail::vformat_to(buf, format_str, args); + return {buf.out(), buf.count()}; +} + +template , + FMT_ENABLE_IF(detail::is_output_iterator::value&& + detail::is_exotic_char::value)> +inline auto format_to_n(OutputIt out, size_t n, const S& fmt, T&&... args) + -> format_to_n_result { + return vformat_to_n(out, n, fmt::basic_string_view(fmt), + fmt::make_format_args>(args...)); +} + +template , + FMT_ENABLE_IF(detail::is_exotic_char::value)> +inline auto formatted_size(const S& fmt, T&&... args) -> size_t { + auto buf = detail::counting_buffer(); + detail::vformat_to(buf, detail::to_string_view(fmt), + fmt::make_format_args>(args...)); + return buf.count(); +} + +inline void vprint(std::FILE* f, wstring_view fmt, wformat_args args) { + auto buf = wmemory_buffer(); + detail::vformat_to(buf, fmt, args); + buf.push_back(L'\0'); + if (std::fputws(buf.data(), f) == -1) + FMT_THROW(system_error(errno, FMT_STRING("cannot write to file"))); +} + +inline void vprint(wstring_view fmt, wformat_args args) { + vprint(stdout, fmt, args); +} + +template +void print(std::FILE* f, wformat_string fmt, T&&... args) { + return vprint(f, wstring_view(fmt), fmt::make_wformat_args(args...)); +} + +template void print(wformat_string fmt, T&&... args) { + return vprint(wstring_view(fmt), fmt::make_wformat_args(args...)); +} + +template +void println(std::FILE* f, wformat_string fmt, T&&... args) { + return print(f, L"{}\n", fmt::format(fmt, std::forward(args)...)); +} + +template void println(wformat_string fmt, T&&... args) { + return print(L"{}\n", fmt::format(fmt, std::forward(args)...)); +} + +inline auto vformat(const text_style& ts, wstring_view fmt, wformat_args args) + -> std::wstring { + auto buf = wmemory_buffer(); + detail::vformat_to(buf, ts, fmt, args); + return fmt::to_string(buf); +} + +template +inline auto format(const text_style& ts, wformat_string fmt, T&&... args) + -> std::wstring { + return fmt::vformat(ts, fmt, fmt::make_wformat_args(args...)); +} + +template +FMT_DEPRECATED void print(std::FILE* f, const text_style& ts, + wformat_string fmt, const T&... args) { + vprint(f, ts, fmt, fmt::make_wformat_args(args...)); +} + +template +FMT_DEPRECATED void print(const text_style& ts, wformat_string fmt, + const T&... args) { + return print(stdout, ts, fmt, args...); +} + +/// Converts `value` to `std::wstring` using the default format for type `T`. +template inline auto to_wstring(const T& value) -> std::wstring { + return format(FMT_STRING(L"{}"), value); +} +FMT_END_EXPORT +FMT_END_NAMESPACE + +#endif // FMT_XCHAR_H_ diff --git a/Submodules/fmt/src/fmt.cc b/Submodules/fmt/src/fmt.cc new file mode 100644 index 0000000..fb514ad --- /dev/null +++ b/Submodules/fmt/src/fmt.cc @@ -0,0 +1,135 @@ +module; + +// Put all implementation-provided headers into the global module fragment +// to prevent attachment to this module. +#ifndef FMT_IMPORT_STD +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +# include +#else +# include +# include +# include +# include +#endif +#include +#include +#include + +#if __has_include() +# include +#endif +#if defined(_MSC_VER) || defined(__MINGW32__) +# include +#endif +#if defined __APPLE__ || defined(__FreeBSD__) +# include +#endif +#if __has_include() +# include +#endif +#if (__has_include() || defined(__APPLE__) || \ + defined(__linux__)) && \ + (!defined(WINAPI_FAMILY) || (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP)) +# include +# include +# include +# ifndef _WIN32 +# include +# else +# include +# endif +#endif +#ifdef _WIN32 +# if defined(__GLIBCXX__) +# include +# include +# endif +# define WIN32_LEAN_AND_MEAN +# include +#endif + +export module fmt; + +#ifdef FMT_IMPORT_STD +import std; +#endif + +#define FMT_EXPORT export +#define FMT_BEGIN_EXPORT export { +#define FMT_END_EXPORT } + +// If you define FMT_ATTACH_TO_GLOBAL_MODULE +// - all declarations are detached from module 'fmt' +// - the module behaves like a traditional static library, too +// - all library symbols are mangled traditionally +// - you can mix TUs with either importing or #including the {fmt} API +#ifdef FMT_ATTACH_TO_GLOBAL_MODULE +extern "C++" { +#endif + +#ifndef FMT_OS +# define FMT_OS 1 +#endif + +// All library-provided declarations and definitions must be in the module +// purview to be exported. +#include "fmt/args.h" +#include "fmt/chrono.h" +#include "fmt/color.h" +#include "fmt/compile.h" +#include "fmt/format.h" +#if FMT_OS +# include "fmt/os.h" +#endif +#include "fmt/ostream.h" +#include "fmt/printf.h" +#include "fmt/ranges.h" +#include "fmt/std.h" +#include "fmt/xchar.h" + +#ifdef FMT_ATTACH_TO_GLOBAL_MODULE +} +#endif + +// gcc doesn't yet implement private module fragments +#if !FMT_GCC_VERSION +module :private; +#endif + +#if FMT_HAS_INCLUDE("format.cc") +# include "format.cc" +#endif +#if FMT_OS && FMT_HAS_INCLUDE("os.cc") +# include "os.cc" +#endif diff --git a/Submodules/fmt/src/format.cc b/Submodules/fmt/src/format.cc new file mode 100644 index 0000000..391d3a2 --- /dev/null +++ b/Submodules/fmt/src/format.cc @@ -0,0 +1,43 @@ +// Formatting library for C++ +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#include "fmt/format-inl.h" + +FMT_BEGIN_NAMESPACE +namespace detail { + +template FMT_API auto dragonbox::to_decimal(float x) noexcept + -> dragonbox::decimal_fp; +template FMT_API auto dragonbox::to_decimal(double x) noexcept + -> dragonbox::decimal_fp; + +#ifndef FMT_STATIC_THOUSANDS_SEPARATOR +template FMT_API locale_ref::locale_ref(const std::locale& loc); +template FMT_API auto locale_ref::get() const -> std::locale; +#endif + +// Explicit instantiations for char. + +template FMT_API auto thousands_sep_impl(locale_ref) + -> thousands_sep_result; +template FMT_API auto decimal_point_impl(locale_ref) -> char; + +template FMT_API void buffer::append(const char*, const char*); + +template FMT_API void vformat_to(buffer&, string_view, + typename vformat_args<>::type, locale_ref); + +// Explicit instantiations for wchar_t. + +template FMT_API auto thousands_sep_impl(locale_ref) + -> thousands_sep_result; +template FMT_API auto decimal_point_impl(locale_ref) -> wchar_t; + +template FMT_API void buffer::append(const wchar_t*, const wchar_t*); + +} // namespace detail +FMT_END_NAMESPACE diff --git a/Submodules/fmt/src/os.cc b/Submodules/fmt/src/os.cc new file mode 100644 index 0000000..2736649 --- /dev/null +++ b/Submodules/fmt/src/os.cc @@ -0,0 +1,403 @@ +// Formatting library for C++ - optional OS-specific functionality +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +// Disable bogus MSVC warnings. +#if !defined(_CRT_SECURE_NO_WARNINGS) && defined(_MSC_VER) +# define _CRT_SECURE_NO_WARNINGS +#endif + +#include "fmt/os.h" + +#ifndef FMT_MODULE +# include + +# if FMT_USE_FCNTL +# include +# include + +# ifdef _WRS_KERNEL // VxWorks7 kernel +# include // getpagesize +# endif + +# ifndef _WIN32 +# include +# else +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# include +# endif // _WIN32 +# endif // FMT_USE_FCNTL + +# ifdef _WIN32 +# include +# endif +#endif + +#ifdef _WIN32 +# ifndef S_IRUSR +# define S_IRUSR _S_IREAD +# endif +# ifndef S_IWUSR +# define S_IWUSR _S_IWRITE +# endif +# ifndef S_IRGRP +# define S_IRGRP 0 +# endif +# ifndef S_IWGRP +# define S_IWGRP 0 +# endif +# ifndef S_IROTH +# define S_IROTH 0 +# endif +# ifndef S_IWOTH +# define S_IWOTH 0 +# endif +#endif + +namespace { +#ifdef _WIN32 +// Return type of read and write functions. +using rwresult = int; + +// On Windows the count argument to read and write is unsigned, so convert +// it from size_t preventing integer overflow. +inline unsigned convert_rwcount(std::size_t count) { + return count <= UINT_MAX ? static_cast(count) : UINT_MAX; +} +#elif FMT_USE_FCNTL +// Return type of read and write functions. +using rwresult = ssize_t; + +inline std::size_t convert_rwcount(std::size_t count) { return count; } +#endif +} // namespace + +FMT_BEGIN_NAMESPACE + +#ifdef _WIN32 +namespace detail { + +class system_message { + system_message(const system_message&) = delete; + void operator=(const system_message&) = delete; + + unsigned long result_; + wchar_t* message_; + + static bool is_whitespace(wchar_t c) noexcept { + return c == L' ' || c == L'\n' || c == L'\r' || c == L'\t' || c == L'\0'; + } + + public: + explicit system_message(unsigned long error_code) + : result_(0), message_(nullptr) { + result_ = FormatMessageW( + FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | + FORMAT_MESSAGE_IGNORE_INSERTS, + nullptr, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), + reinterpret_cast(&message_), 0, nullptr); + if (result_ != 0) { + while (result_ != 0 && is_whitespace(message_[result_ - 1])) { + --result_; + } + } + } + ~system_message() { LocalFree(message_); } + explicit operator bool() const noexcept { return result_ != 0; } + operator basic_string_view() const noexcept { + return basic_string_view(message_, result_); + } +}; + +class utf8_system_category final : public std::error_category { + public: + const char* name() const noexcept override { return "system"; } + std::string message(int error_code) const override { + auto&& msg = system_message(error_code); + if (msg) { + auto utf8_message = to_utf8(); + if (utf8_message.convert(msg)) { + return utf8_message.str(); + } + } + return "unknown error"; + } +}; + +} // namespace detail + +FMT_API const std::error_category& system_category() noexcept { + static const detail::utf8_system_category category; + return category; +} + +std::system_error vwindows_error(int err_code, string_view format_str, + format_args args) { + auto ec = std::error_code(err_code, system_category()); + return std::system_error(ec, vformat(format_str, args)); +} + +void detail::format_windows_error(detail::buffer& out, int error_code, + const char* message) noexcept { + FMT_TRY { + auto&& msg = system_message(error_code); + if (msg) { + auto utf8_message = to_utf8(); + if (utf8_message.convert(msg)) { + fmt::format_to(appender(out), FMT_STRING("{}: {}"), message, + string_view(utf8_message)); + return; + } + } + } + FMT_CATCH(...) {} + format_error_code(out, error_code, message); +} + +void report_windows_error(int error_code, const char* message) noexcept { + report_error(detail::format_windows_error, error_code, message); +} +#endif // _WIN32 + +buffered_file::~buffered_file() noexcept { + if (file_ && FMT_SYSTEM(fclose(file_)) != 0) + report_system_error(errno, "cannot close file"); +} + +buffered_file::buffered_file(cstring_view filename, cstring_view mode) { + FMT_RETRY_VAL(file_, FMT_SYSTEM(fopen(filename.c_str(), mode.c_str())), + nullptr); + if (!file_) + FMT_THROW(system_error(errno, FMT_STRING("cannot open file {}"), + filename.c_str())); +} + +void buffered_file::close() { + if (!file_) return; + int result = FMT_SYSTEM(fclose(file_)); + file_ = nullptr; + if (result != 0) + FMT_THROW(system_error(errno, FMT_STRING("cannot close file"))); +} + +int buffered_file::descriptor() const { +#ifdef FMT_HAS_SYSTEM + // fileno is a macro on OpenBSD. +# ifdef fileno +# undef fileno +# endif + int fd = FMT_POSIX_CALL(fileno(file_)); +#elif defined(_WIN32) + int fd = _fileno(file_); +#else + int fd = fileno(file_); +#endif + if (fd == -1) + FMT_THROW(system_error(errno, FMT_STRING("cannot get file descriptor"))); + return fd; +} + +#if FMT_USE_FCNTL +# ifdef _WIN32 +using mode_t = int; +# endif + +constexpr mode_t default_open_mode = + S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH; + +file::file(cstring_view path, int oflag) { +# if defined(_WIN32) && !defined(__MINGW32__) + fd_ = -1; + auto converted = detail::utf8_to_utf16(string_view(path.c_str())); + *this = file::open_windows_file(converted.c_str(), oflag); +# else + FMT_RETRY(fd_, FMT_POSIX_CALL(open(path.c_str(), oflag, default_open_mode))); + if (fd_ == -1) + FMT_THROW( + system_error(errno, FMT_STRING("cannot open file {}"), path.c_str())); +# endif +} + +file::~file() noexcept { + // Don't retry close in case of EINTR! + // See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html + if (fd_ != -1 && FMT_POSIX_CALL(close(fd_)) != 0) + report_system_error(errno, "cannot close file"); +} + +void file::close() { + if (fd_ == -1) return; + // Don't retry close in case of EINTR! + // See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html + int result = FMT_POSIX_CALL(close(fd_)); + fd_ = -1; + if (result != 0) + FMT_THROW(system_error(errno, FMT_STRING("cannot close file"))); +} + +long long file::size() const { +# ifdef _WIN32 + // Use GetFileSize instead of GetFileSizeEx for the case when _WIN32_WINNT + // is less than 0x0500 as is the case with some default MinGW builds. + // Both functions support large file sizes. + DWORD size_upper = 0; + HANDLE handle = reinterpret_cast(_get_osfhandle(fd_)); + DWORD size_lower = FMT_SYSTEM(GetFileSize(handle, &size_upper)); + if (size_lower == INVALID_FILE_SIZE) { + DWORD error = GetLastError(); + if (error != NO_ERROR) + FMT_THROW(windows_error(GetLastError(), "cannot get file size")); + } + unsigned long long long_size = size_upper; + return (long_size << sizeof(DWORD) * CHAR_BIT) | size_lower; +# else + using Stat = struct stat; + Stat file_stat = Stat(); + if (FMT_POSIX_CALL(fstat(fd_, &file_stat)) == -1) + FMT_THROW(system_error(errno, FMT_STRING("cannot get file attributes"))); + static_assert(sizeof(long long) >= sizeof(file_stat.st_size), + "return type of file::size is not large enough"); + return file_stat.st_size; +# endif +} + +std::size_t file::read(void* buffer, std::size_t count) { + rwresult result = 0; + FMT_RETRY(result, FMT_POSIX_CALL(read(fd_, buffer, convert_rwcount(count)))); + if (result < 0) + FMT_THROW(system_error(errno, FMT_STRING("cannot read from file"))); + return detail::to_unsigned(result); +} + +std::size_t file::write(const void* buffer, std::size_t count) { + rwresult result = 0; + FMT_RETRY(result, FMT_POSIX_CALL(write(fd_, buffer, convert_rwcount(count)))); + if (result < 0) + FMT_THROW(system_error(errno, FMT_STRING("cannot write to file"))); + return detail::to_unsigned(result); +} + +file file::dup(int fd) { + // Don't retry as dup doesn't return EINTR. + // http://pubs.opengroup.org/onlinepubs/009695399/functions/dup.html + int new_fd = FMT_POSIX_CALL(dup(fd)); + if (new_fd == -1) + FMT_THROW(system_error( + errno, FMT_STRING("cannot duplicate file descriptor {}"), fd)); + return file(new_fd); +} + +void file::dup2(int fd) { + int result = 0; + FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd))); + if (result == -1) { + FMT_THROW(system_error( + errno, FMT_STRING("cannot duplicate file descriptor {} to {}"), fd_, + fd)); + } +} + +void file::dup2(int fd, std::error_code& ec) noexcept { + int result = 0; + FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd))); + if (result == -1) ec = std::error_code(errno, std::generic_category()); +} + +buffered_file file::fdopen(const char* mode) { +// Don't retry as fdopen doesn't return EINTR. +# if defined(__MINGW32__) && defined(_POSIX_) + FILE* f = ::fdopen(fd_, mode); +# else + FILE* f = FMT_POSIX_CALL(fdopen(fd_, mode)); +# endif + if (!f) { + FMT_THROW(system_error( + errno, FMT_STRING("cannot associate stream with file descriptor"))); + } + buffered_file bf(f); + fd_ = -1; + return bf; +} + +# if defined(_WIN32) && !defined(__MINGW32__) +file file::open_windows_file(wcstring_view path, int oflag) { + int fd = -1; + auto err = _wsopen_s(&fd, path.c_str(), oflag, _SH_DENYNO, default_open_mode); + if (fd == -1) { + FMT_THROW(system_error(err, FMT_STRING("cannot open file {}"), + detail::to_utf8(path.c_str()).c_str())); + } + return file(fd); +} +# endif + +pipe::pipe() { + int fds[2] = {}; +# ifdef _WIN32 + // Make the default pipe capacity same as on Linux 2.6.11+. + enum { DEFAULT_CAPACITY = 65536 }; + int result = FMT_POSIX_CALL(pipe(fds, DEFAULT_CAPACITY, _O_BINARY)); +# else + // Don't retry as the pipe function doesn't return EINTR. + // http://pubs.opengroup.org/onlinepubs/009696799/functions/pipe.html + int result = FMT_POSIX_CALL(pipe(fds)); +# endif + if (result != 0) + FMT_THROW(system_error(errno, FMT_STRING("cannot create pipe"))); + // The following assignments don't throw. + read_end = file(fds[0]); + write_end = file(fds[1]); +} + +# if !defined(__MSDOS__) +long getpagesize() { +# ifdef _WIN32 + SYSTEM_INFO si; + GetSystemInfo(&si); + return si.dwPageSize; +# else +# ifdef _WRS_KERNEL + long size = FMT_POSIX_CALL(getpagesize()); +# else + long size = FMT_POSIX_CALL(sysconf(_SC_PAGESIZE)); +# endif + + if (size < 0) + FMT_THROW(system_error(errno, FMT_STRING("cannot get memory page size"))); + return size; +# endif +} +# endif + +namespace detail { + +void file_buffer::grow(buffer& buf, size_t) { + if (buf.size() == buf.capacity()) static_cast(buf).flush(); +} + +file_buffer::file_buffer(cstring_view path, const ostream_params& params) + : buffer(grow), file_(path, params.oflag) { + set(new char[params.buffer_size], params.buffer_size); +} + +file_buffer::file_buffer(file_buffer&& other) noexcept + : buffer(grow, other.data(), other.size(), other.capacity()), + file_(std::move(other.file_)) { + other.clear(); + other.set(nullptr, 0); +} + +file_buffer::~file_buffer() { + flush(); + delete[] data(); +} +} // namespace detail + +ostream::~ostream() = default; +#endif // FMT_USE_FCNTL +FMT_END_NAMESPACE diff --git a/Submodules/fmt/support/Android.mk b/Submodules/fmt/support/Android.mk new file mode 100644 index 0000000..84a3e32 --- /dev/null +++ b/Submodules/fmt/support/Android.mk @@ -0,0 +1,15 @@ +LOCAL_PATH := $(call my-dir) +include $(CLEAR_VARS) + +LOCAL_MODULE := fmt_static +LOCAL_MODULE_FILENAME := libfmt + +LOCAL_SRC_FILES := ../src/format.cc + +LOCAL_C_INCLUDES := $(LOCAL_PATH) +LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH) + +LOCAL_CFLAGS += -std=c++11 -fexceptions + +include $(BUILD_STATIC_LIBRARY) + diff --git a/Submodules/fmt/support/AndroidManifest.xml b/Submodules/fmt/support/AndroidManifest.xml new file mode 100644 index 0000000..c282ef5 --- /dev/null +++ b/Submodules/fmt/support/AndroidManifest.xml @@ -0,0 +1 @@ + diff --git a/Submodules/fmt/support/C++.sublime-syntax b/Submodules/fmt/support/C++.sublime-syntax new file mode 100644 index 0000000..9dfb5cb --- /dev/null +++ b/Submodules/fmt/support/C++.sublime-syntax @@ -0,0 +1,2061 @@ +%YAML 1.2 +--- +# http://www.sublimetext.com/docs/3/syntax.html +name: C++ (fmt) +comment: I don't think anyone uses .hp. .cp tends to be paired with .h. (I could be wrong. :) -- chris +file_extensions: + - cpp + - cc + - cp + - cxx + - c++ + - C + - h + - hh + - hpp + - hxx + - h++ + - inl + - ipp +first_line_match: '-\*- C\+\+ -\*-' +scope: source.c++ +variables: + identifier: \b[[:alpha:]_][[:alnum:]_]*\b # upper and lowercase + macro_identifier: \b[[:upper:]_][[:upper:][:digit:]_]{2,}\b # only uppercase, at least 3 chars + path_lookahead: '(?:::\s*)?(?:{{identifier}}\s*::\s*)*(?:template\s+)?{{identifier}}' + operator_method_name: '\boperator\s*(?:[-+*/%^&|~!=<>]|[-+*/%^&|=!<>]=|<<=?|>>=?|&&|\|\||\+\+|--|,|->\*?|\(\)|\[\]|""\s*{{identifier}})' + casts: 'const_cast|dynamic_cast|reinterpret_cast|static_cast' + operator_keywords: 'and|and_eq|bitand|bitor|compl|not|not_eq|or|or_eq|xor|xor_eq|noexcept' + control_keywords: 'break|case|catch|continue|default|do|else|for|goto|if|_Pragma|return|switch|throw|try|while' + memory_operators: 'new|delete' + basic_types: 'asm|__asm__|auto|bool|_Bool|char|_Complex|double|float|_Imaginary|int|long|short|signed|unsigned|void' + before_tag: 'struct|union|enum\s+class|enum\s+struct|enum|class' + declspec: '__declspec\(\s*\w+(?:\([^)]+\))?\s*\)' + storage_classes: 'static|export|extern|friend|explicit|virtual|register|thread_local' + type_qualifier: 'const|constexpr|mutable|typename|volatile' + compiler_directive: 'inline|restrict|__restrict__|__restrict' + visibility_modifiers: 'private|protected|public' + other_keywords: 'typedef|nullptr|{{visibility_modifiers}}|static_assert|sizeof|using|typeid|alignof|alignas|namespace|template' + modifiers: '{{storage_classes}}|{{type_qualifier}}|{{compiler_directive}}' + non_angle_brackets: '(?=<<|<=)' + + regular: '[^(){}&;*^%=<>-]*' + paren_open: (?:\( + paren_close: '\))?' + generic_open: (?:< + generic_close: '>)?' + balance_parentheses: '{{regular}}{{paren_open}}{{regular}}{{paren_close}}{{regular}}' + generic_lookahead: <{{regular}}{{generic_open}}{{regular}}{{generic_open}}{{regular}}{{generic_close}}\s*{{generic_close}}{{balance_parentheses}}> + + data_structures_forward_decl_lookahead: '(\s+{{macro_identifier}})*\s*(:\s*({{path_lookahead}}|{{visibility_modifiers}}|,|\s|<[^;]*>)+)?;' + non_func_keywords: 'if|for|switch|while|decltype|sizeof|__declspec|__attribute__|typeid|alignof|alignas|static_assert' + + format_spec: |- + (?x: + (?:.? [<>=^])? # fill align + [ +-]? # sign + \#? # alternate form + # technically, octal and hexadecimal integers are also supported as 'width', but rarely used + \d* # width + ,? # thousands separator + (?:\.\d+)? # precision + [bcdeEfFgGnosxX%]? # type + ) + +contexts: + main: + - include: preprocessor-global + - include: global + + ############################################################################# + # Reusable contexts + # + # The follow contexts are currently constructed to be reused in the + # Objetive-C++ syntax. They are specifically constructed to not push into + # sub-contexts, which ensures that Objective-C++ code isn't accidentally + # lexed as plain C++. + # + # The "unique-*" contexts are additions that C++ makes over C, and thus can + # be directly reused in Objective-C++ along with contexts from Objective-C + # and C. + ############################################################################# + + unique-late-expressions: + # This is highlighted after all of the other control keywords + # to allow operator overloading to be lexed properly + - match: \boperator\b + scope: keyword.control.c++ + + unique-modifiers: + - match: \b({{modifiers}})\b + scope: storage.modifier.c++ + + unique-variables: + - match: \bthis\b + scope: variable.language.c++ + # common C++ instance var naming idiom -- fMemberName + - match: '\b(f|m)[[:upper:]]\w*\b' + scope: variable.other.readwrite.member.c++ + # common C++ instance var naming idiom -- m_member_name + - match: '\bm_[[:alnum:]_]+\b' + scope: variable.other.readwrite.member.c++ + + unique-constants: + - match: \bnullptr\b + scope: constant.language.c++ + + unique-keywords: + - match: \busing\b + scope: keyword.control.c++ + - match: \bbreak\b + scope: keyword.control.flow.break.c++ + - match: \bcontinue\b + scope: keyword.control.flow.continue.c++ + - match: \bgoto\b + scope: keyword.control.flow.goto.c++ + - match: \breturn\b + scope: keyword.control.flow.return.c++ + - match: \bthrow\b + scope: keyword.control.flow.throw.c++ + - match: \b({{control_keywords}})\b + scope: keyword.control.c++ + - match: '\bdelete\b(\s*\[\])?|\bnew\b(?!])' + scope: keyword.control.c++ + - match: \b({{operator_keywords}})\b + scope: keyword.operator.word.c++ + + unique-types: + - match: \b(char16_t|char32_t|wchar_t|nullptr_t)\b + scope: storage.type.c++ + - match: \bclass\b + scope: storage.type.c++ + + unique-strings: + - match: '((?:L|u8|u|U)?R)("([^\(\)\\ ]{0,16})\()' + captures: + 1: storage.type.string.c++ + 2: punctuation.definition.string.begin.c++ + push: + - meta_scope: string.quoted.double.c++ + - match: '\)\3"' + scope: punctuation.definition.string.end.c++ + pop: true + - match: '\{\{|\}\}' + scope: constant.character.escape.c++ + - include: formatting-syntax + + unique-numbers: + - match: |- + (?x) + (?: + # floats + (?: + (?:\b\d(?:[\d']*\d)?\.\d(?:[\d']*\d)?|\B\.\d(?:[\d']*\d)?)(?:[Ee][+-]?\d(?:[\d']*\d)?)?(?:[fFlL]|(?:i[fl]?|h|min|[mun]?s|_\w*))?\b + | + (?:\b\d(?:[\d']*\d)?\.)(?:\B|(?:[fFlL]|(?:i[fl]?|h|min|[mun]?s|_\w*))\b|(?:[Ee][+-]?\d(?:[\d']*\d)?)(?:[fFlL]|(?:i[fl]?|h|min|[mun]?s|_\w*))?\b) + | + \b\d(?:[\d']*\d)?(?:[Ee][+-]?\d(?:[\d']*\d)?)(?:[fFlL]|(?:i[fl]?|h|min|[mun]?s|_\w*))?\b + ) + | + # ints + \b(?: + (?: + # dec + [1-9](?:[\d']*\d)? + | + # oct + 0(?:[0-7']*[0-7])? + | + # hex + 0[Xx][\da-fA-F](?:[\da-fA-F']*[\da-fA-F])? + | + # bin + 0[Bb][01](?:[01']*[01])? + ) + # int suffixes + (?:(?:l{1,2}|L{1,2})[uU]?|[uU](?:l{0,2}|L{0,2})|(?:i[fl]?|h|min|[mun]?s|_\w*))?)\b + ) + (?!\.) # Number must not be followed by a decimal point + scope: constant.numeric.c++ + + identifiers: + - match: '{{identifier}}\s*(::)\s*' + captures: + 1: punctuation.accessor.c++ + - match: '(?:(::)\s*)?{{identifier}}' + captures: + 1: punctuation.accessor.c++ + + function-specifiers: + - match: \b(const|final|noexcept|override)\b + scope: storage.modifier.c++ + + ############################################################################# + # The following are C++-specific contexts that should not be reused. This is + # because they push into subcontexts and use variables that are C++-specific. + ############################################################################# + + ## Common context layout + + global: + - match: '(?=\btemplate\b)' + push: + - include: template + - match: (?=\S) + set: global-modifier + - include: namespace + - include: keywords-angle-brackets + - match: '(?={{path_lookahead}}\s*<)' + push: global-modifier + # Take care of comments just before a function definition. + - match: /\* + scope: punctuation.definition.comment.c + push: + - - match: \s*(?=\w) + set: global-modifier + - match: "" + pop: true + - - meta_scope: comment.block.c + - match: \*/ + scope: punctuation.definition.comment.c + pop: true + - include: early-expressions + - match: ^\s*\b(extern)(?=\s+"C(\+\+)?") + scope: storage.modifier.c++ + push: + - include: comments + - include: strings + - match: '\{' + scope: punctuation.section.block.begin.c++ + set: + - meta_scope: meta.extern-c.c++ + - match: '^\s*(#\s*ifdef)\s*__cplusplus\s*' + scope: meta.preprocessor.c++ + captures: + 1: keyword.control.import.c++ + set: + - match: '\}' + scope: punctuation.section.block.end.c++ + pop: true + - include: preprocessor-global + - include: global + - match: '\}' + scope: punctuation.section.block.end.c++ + pop: true + - include: preprocessor-global + - include: global + - match: (?=\S) + set: global-modifier + - match: ^\s*(?=\w) + push: global-modifier + - include: late-expressions + + statements: + - include: preprocessor-statements + - include: scope:source.c#label + - include: expressions + + expressions: + - include: early-expressions + - include: late-expressions + + early-expressions: + - include: early-expressions-before-generic-type + - include: generic-type + - include: early-expressions-after-generic-type + + early-expressions-before-generic-type: + - include: preprocessor-expressions + - include: comments + - include: case-default + - include: typedef + - include: keywords-angle-brackets + - include: keywords-parens + - include: keywords + - include: numbers + # Prevent a '<' from getting scoped as the start of another template + # parameter list, if in reality a less-than-or-equals sign is meant. + - match: <= + scope: keyword.operator.comparison.c + + early-expressions-after-generic-type: + - include: members-arrow + - include: operators + - include: members-dot + - include: strings + - include: parens + - include: brackets + - include: block + - include: variables + - include: constants + - match: ',' + scope: punctuation.separator.c++ + - match: '\)|\}' + scope: invalid.illegal.stray-bracket-end.c++ + + expressions-minus-generic-type: + - include: early-expressions-before-generic-type + - include: angle-brackets + - include: early-expressions-after-generic-type + - include: late-expressions + + expressions-minus-generic-type-function-call: + - include: early-expressions-before-generic-type + - include: angle-brackets + - include: early-expressions-after-generic-type + - include: late-expressions-before-function-call + - include: identifiers + - match: ';' + scope: punctuation.terminator.c++ + + late-expressions: + - include: late-expressions-before-function-call + - include: function-call + - include: identifiers + - match: ';' + scope: punctuation.terminator.c++ + + late-expressions-before-function-call: + - include: unique-late-expressions + - include: modifiers-parens + - include: modifiers + - include: types + + expressions-minus-function-call: + - include: early-expressions + - include: late-expressions-before-function-call + - include: identifiers + - match: ';' + scope: punctuation.terminator.c++ + + comments: + - include: scope:source.c#comments + + operators: + - include: scope:source.c#operators + + modifiers: + - include: unique-modifiers + - include: scope:source.c#modifiers + + variables: + - include: unique-variables + - include: scope:source.c#variables + + constants: + - include: unique-constants + - include: scope:source.c#constants + + keywords: + - include: unique-keywords + - include: scope:source.c#keywords + + types: + - include: unique-types + - include: types-parens + - include: scope:source.c#types + + strings: + - include: unique-strings + - match: '(L|u8|u|U)?(")' + captures: + 1: storage.type.string.c++ + 2: punctuation.definition.string.begin.c++ + push: + - meta_scope: string.quoted.double.c++ + - match: '"' + scope: punctuation.definition.string.end.c++ + pop: true + - include: scope:source.c#string_escaped_char + - match: |- + (?x)% + (\d+\$)? # field (argument #) + [#0\- +']* # flags + [,;:_]? # separator character (AltiVec) + ((-?\d+)|\*(-?\d+\$)?)? # minimum field width + (\.((-?\d+)|\*(-?\d+\$)?)?)? # precision + (hh|h|ll|l|j|t|z|q|L|vh|vl|v|hv|hl)? # length modifier + (\[[^\]]+\]|[am]s|[diouxXDOUeEfFgGaACcSspn%]) # conversion type + scope: constant.other.placeholder.c++ + - match: '\{\{|\}\}' + scope: constant.character.escape.c++ + - include: formatting-syntax + - include: scope:source.c#strings + + formatting-syntax: + # https://docs.python.org/3.6/library/string.html#formatstrings + - match: |- # simple form + (?x) + (\{) + (?: [\w.\[\]]+)? # field_name + ( ! [ars])? # conversion + ( : (?:{{format_spec}}| # format_spec OR + [^}%]*%.[^}]*) # any format-like string + )? + (\}) + scope: constant.other.placeholder.c++ + captures: + 1: punctuation.definition.placeholder.begin.c++ + 2: storage.modifier.c++onversion.c++ + 3: constant.other.format-spec.c++ + 4: punctuation.definition.placeholder.end.c++ + - match: \{(?=[^\}"']+\{[^"']*\}) # complex (nested) form + scope: punctuation.definition.placeholder.begin.c++ + push: + - meta_scope: constant.other.placeholder.c++ + - match: \} + scope: punctuation.definition.placeholder.end.c++ + pop: true + - match: '[\w.\[\]]+' + - match: '![ars]' + scope: storage.modifier.conversion.c++ + - match: ':' + push: + - meta_scope: meta.format-spec.c++ constant.other.format-spec.c++ + - match: (?=\}) + pop: true + - include: formatting-syntax + + numbers: + - include: unique-numbers + - include: scope:source.c#numbers + + ## C++-specific contexts + + case-default: + - match: '\b(default|case)\b' + scope: keyword.control.c++ + push: + - match: (?=[);,]) + pop: true + - match: ':' + scope: punctuation.separator.c++ + pop: true + - include: expressions + + modifiers-parens: + - match: '\b(alignas)\b\s*(\()' + captures: + 1: storage.modifier.c++ + 2: meta.group.c++ punctuation.section.group.begin.c++ + push: + - meta_content_scope: meta.group.c++ + - match: '\)' + scope: meta.group.c++ punctuation.section.group.end.c++ + pop: true + - include: expressions + - match: \b(__attribute__)\s*(\(\() + captures: + 1: storage.modifier.c++ + 2: meta.group.c++ punctuation.section.group.begin.c++ + push : + - meta_scope: meta.attribute.c++ + - meta_content_scope: meta.group.c++ + - include: parens + - include: strings + - match: \)\) + scope: meta.group.c++ punctuation.section.group.end.c++ + pop: true + - match: \b(__declspec)(\() + captures: + 1: storage.modifier.c++ + 2: meta.group.c++ punctuation.section.group.begin.c++ + push: + - meta_content_scope: meta.group.c++ + - match: '\)' + scope: meta.group.c++ punctuation.section.group.end.c++ + pop: true + - match: '\b(align|allocate|code_seg|deprecated|property|uuid)\b\s*(\()' + captures: + 1: storage.modifier.c++ + 2: meta.group.c++ punctuation.section.group.begin.c++ + push: + - meta_content_scope: meta.group.c++ + - match: '\)' + scope: meta.group.c++ punctuation.section.group.end.c++ + pop: true + - include: numbers + - include: strings + - match: \b(get|put)\b + scope: variable.parameter.c++ + - match: ',' + scope: punctuation.separator.c++ + - match: '=' + scope: keyword.operator.assignment.c++ + - match: '\b(appdomain|deprecated|dllimport|dllexport|jintrinsic|naked|noalias|noinline|noreturn|nothrow|novtable|process|restrict|safebuffers|selectany|thread)\b' + scope: constant.other.c++ + + types-parens: + - match: '\b(decltype)\b\s*(\()' + captures: + 1: storage.type.c++ + 2: meta.group.c++ punctuation.section.group.begin.c++ + push: + - meta_content_scope: meta.group.c++ + - match: '\)' + scope: meta.group.c++ punctuation.section.group.end.c++ + pop: true + - include: expressions + + keywords-angle-brackets: + - match: \b({{casts}})\b\s* + scope: keyword.operator.word.cast.c++ + push: + - match: '>' + scope: punctuation.section.generic.end.c++ + pop: true + - match: '<' + scope: punctuation.section.generic.begin.c++ + push: + - match: '(?=>)' + pop: true + - include: expressions-minus-generic-type-function-call + + keywords-parens: + - match: '\b(alignof|typeid|static_assert|sizeof)\b\s*(\()' + captures: + 1: keyword.operator.word.c++ + 2: meta.group.c++ punctuation.section.group.begin.c++ + push: + - meta_content_scope: meta.group.c++ + - match: '\)' + scope: meta.group.c++ punctuation.section.group.end.c++ + pop: true + - include: expressions + + namespace: + - match: '\b(using)\s+(namespace)\s+(?={{path_lookahead}})' + captures: + 1: keyword.control.c++ + 2: keyword.control.c++ + push: + - include: identifiers + - match: '' + pop: true + - match: '\b(namespace)\s+(?=({{path_lookahead}})?(?!\s*[;,]))' + scope: meta.namespace.c++ + captures: + 1: keyword.control.c++ + push: + - meta_content_scope: meta.namespace.c++ entity.name.namespace.c++ + - include: identifiers + - match: '' + set: + - meta_scope: meta.namespace.c++ + - include: comments + - match: '=' + scope: keyword.operator.alias.c++ + - match: '(?=;)' + pop: true + - match: '\}' + scope: meta.block.c++ punctuation.section.block.end.c++ + pop: true + - match: '\{' + scope: punctuation.section.block.begin.c++ + push: + - meta_scope: meta.block.c++ + - match: '(?=\})' + pop: true + - include: preprocessor-global + - include: global + - include: expressions + + template-common: + # Exit the template scope if we hit some basic invalid characters. This + # helps when a user is in the middle of typing their template types and + # prevents re-highlighting the whole file until the next > is found. + - match: (?=[{};]) + pop: true + - include: expressions + + template: + - match: \btemplate\b + scope: storage.type.template.c++ + push: + - meta_scope: meta.template.c++ + # Explicitly include comments here at the top, in order to NOT match the + # \S lookahead in the case of comments. + - include: comments + - match: < + scope: punctuation.section.generic.begin.c++ + set: + - meta_content_scope: meta.template.c++ + - match: '>' + scope: meta.template.c++ punctuation.section.generic.end.c++ + pop: true + - match: \.{3} + scope: keyword.operator.variadic.c++ + - match: \b(typename|{{before_tag}})\b + scope: storage.type.c++ + - include: template # include template here for nested templates + - include: template-common + - match: (?=\S) + set: + - meta_content_scope: meta.template.c++ + - match: \b({{before_tag}})\b + scope: storage.type.c++ + - include: template-common + + generic-type: + - match: '(?=(?!template){{path_lookahead}}\s*{{generic_lookahead}}\s*\()' + push: + - meta_scope: meta.function-call.c++ + - match: \btemplate\b + scope: storage.type.template.c++ + - match: '(?:(::)\s*)?{{identifier}}\s*(::)\s*' + captures: + 1: punctuation.accessor.double-colon.c++ + 2: punctuation.accessor.double-colon.c++ + - match: (?:(::)\s*)?({{identifier}})\s*(<) + captures: + 1: punctuation.accessor.double-colon.c++ + 2: variable.function.c++ + 3: punctuation.section.generic.begin.c++ + push: + - match: '>' + scope: punctuation.section.generic.end.c++ + pop: true + - include: expressions-minus-generic-type-function-call + - match: (?:(::)\s*)?({{identifier}})\s*(\() + captures: + 1: punctuation.accessor.double-colon.c++ + 2: variable.function.c++ + 3: punctuation.section.group.begin.c++ + set: + - meta_scope: meta.function-call.c++ + - meta_content_scope: meta.group.c++ + - match: '\)' + scope: meta.group.c++ punctuation.section.group.end.c++ + pop: true + - include: expressions + - include: angle-brackets + - match: '\(' + scope: meta.group.c++ punctuation.section.group.begin.c++ + set: + - meta_scope: meta.function-call.c++ + - meta_content_scope: meta.group.c++ + - match: '\)' + scope: meta.group.c++ punctuation.section.group.end.c++ + pop: true + - include: expressions + - match: '(?=(?!template){{path_lookahead}}\s*{{generic_lookahead}})' + push: + - include: identifiers + - match: '<' + scope: punctuation.section.generic.begin.c++ + set: + - match: '>' + scope: punctuation.section.generic.end.c++ + pop: true + - include: expressions-minus-generic-type-function-call + + angle-brackets: + - match: '<(?!<)' + scope: punctuation.section.generic.begin.c++ + push: + - match: '>' + scope: punctuation.section.generic.end.c++ + pop: true + - include: expressions-minus-generic-type-function-call + + block: + - match: '\{' + scope: punctuation.section.block.begin.c++ + push: + - meta_scope: meta.block.c++ + - match: (?=^\s*#\s*(elif|else|endif)\b) + pop: true + - match: '\}' + scope: punctuation.section.block.end.c++ + pop: true + - include: statements + + function-call: + - match: (?={{path_lookahead}}\s*\() + push: + - meta_scope: meta.function-call.c++ + - include: scope:source.c#c99 + - match: '(?:(::)\s*)?{{identifier}}\s*(::)\s*' + scope: variable.function.c++ + captures: + 1: punctuation.accessor.c++ + 2: punctuation.accessor.c++ + - match: '(?:(::)\s*)?{{identifier}}' + scope: variable.function.c++ + captures: + 1: punctuation.accessor.c++ + - match: '\(' + scope: meta.group.c++ punctuation.section.group.begin.c++ + set: + - meta_content_scope: meta.function-call.c++ meta.group.c++ + - match: '\)' + scope: meta.function-call.c++ meta.group.c++ punctuation.section.group.end.c++ + pop: true + - include: expressions + + members-inside-function-call: + - meta_content_scope: meta.method-call.c++ meta.group.c++ + - match: \) + scope: meta.method-call.c++ meta.group.c++ punctuation.section.group.end.c++ + pop: true + - include: expressions + + members-after-accessor-junction: + # After we've seen an accessor (dot or arrow), this context decides what + # kind of entity we're accessing. + - include: comments + - match: \btemplate\b + scope: meta.method-call.c++ storage.type.template.c++ + # Guaranteed to be a template member function call after we match this + set: + - meta_content_scope: meta.method-call.c++ + - include: comments + - match: '{{identifier}}' + scope: variable.function.member.c++ + set: + - meta_content_scope: meta.method-call.c++ + - match: \( + scope: meta.group.c++ punctuation.section.group.begin.c++ + set: members-inside-function-call + - include: comments + - include: angle-brackets + - match: (?=\S) # safety pop + pop: true + - match: (?=\S) # safety pop + pop: true + # Operator overloading + - match: '({{operator_method_name}})\s*(\()' + captures: + 0: meta.method-call.c++ + 1: variable.function.member.c++ + 2: meta.group.c++ punctuation.section.group.begin.c++ + set: members-inside-function-call + # Non-templated member function call + - match: (~?{{identifier}})\s*(\() + captures: + 0: meta.method-call.c++ + 1: variable.function.member.c++ + 2: meta.group.c++ punctuation.section.group.begin.c++ + set: members-inside-function-call + # Templated member function call + - match: (~?{{identifier}})\s*(?={{generic_lookahead}}) + captures: + 1: variable.function.member.c++ + set: + - meta_scope: meta.method-call.c++ + - match: < + scope: punctuation.section.generic.begin.c++ + set: + - meta_content_scope: meta.method-call.c++ + - match: '>' + scope: punctuation.section.generic.end.c++ + set: + - meta_content_scope: meta.method-call.c++ + - include: comments + - match: \( + scope: punctuation.section.group.begin.c++ + set: members-inside-function-call + - match: (?=\S) # safety pop + pop: true + - include: expressions + # Explicit base-class access + - match: ({{identifier}})\s*(::) + captures: + 1: variable.other.base-class.c++ + 2: punctuation.accessor.double-colon.c++ + set: members-after-accessor-junction # reset + # Just a regular member variable + - match: '{{identifier}}' + scope: variable.other.readwrite.member.c++ + pop: true + + members-dot: + - include: scope:source.c#access-illegal + # No lookahead required because members-dot goes after operators in the + # early-expressions-after-generic-type context. This means triple dots + # (i.e. "..." or "variadic") is attempted first. + - match: \. + scope: punctuation.accessor.dot.c++ + push: members-after-accessor-junction + + members-arrow: + # This needs to be before operators in the + # early-expressions-after-generic-type context because otherwise the "->" + # from the C language will match. + - match: -> + scope: punctuation.accessor.arrow.c++ + push: members-after-accessor-junction + + typedef: + - match: \btypedef\b + scope: storage.type.c++ + push: + - match: ({{identifier}})?\s*(?=;) + captures: + 1: entity.name.type.typedef.c++ + pop: true + - match: \b(struct)\s+({{identifier}})\b + captures: + 1: storage.type.c++ + - include: expressions-minus-generic-type + + parens: + - match: \( + scope: punctuation.section.group.begin.c++ + push: + - meta_scope: meta.group.c++ + - match: \) + scope: punctuation.section.group.end.c++ + pop: true + - include: expressions + + brackets: + - match: \[ + scope: punctuation.section.brackets.begin.c++ + push: + - meta_scope: meta.brackets.c++ + - match: \] + scope: punctuation.section.brackets.end.c++ + pop: true + - include: expressions + + function-trailing-return-type: + - match: '{{non_angle_brackets}}' + pop: true + - include: angle-brackets + - include: types + - include: modifiers-parens + - include: modifiers + - include: identifiers + - match: \*|& + scope: keyword.operator.c++ + - include: function-trailing-return-type-parens + - match: '(?=\S)' + pop: true + + function-trailing-return-type-parens: + - match: \( + scope: punctuation.section.group.begin.c++ + push: + - meta_scope: meta.group.c++ + - match: \) + scope: punctuation.section.group.end.c++ + pop: true + - include: function-trailing-return-type + + ## Detection of function and data structure definitions at the global level + + global-modifier: + - include: comments + - include: modifiers-parens + - include: modifiers + # Constructors and destructors don't have a type + - match: '(?={{path_lookahead}}\s*::\s*{{identifier}}\s*(\(|$))' + set: + - meta_content_scope: meta.function.c++ entity.name.function.constructor.c++ + - include: identifiers + - match: '(?=[^\w\s])' + set: function-definition-params + - match: '(?={{path_lookahead}}\s*::\s*~{{identifier}}\s*(\(|$))' + set: + - meta_content_scope: meta.function.c++ entity.name.function.destructor.c++ + - include: identifiers + - match: '~{{identifier}}' + - match: '(?=[^\w\s])' + set: function-definition-params + # If we see a path ending in :: before a newline, we don't know if it is + # a constructor or destructor, or a long return type, so we are just going + # to treat it like a regular function. Most likely it is a constructor, + # since it doesn't seem most developers would create such a long typename. + - match: '(?={{path_lookahead}}\s*::\s*$)' + set: + - meta_content_scope: meta.function.c++ entity.name.function.c++ + - include: identifiers + - match: '~{{identifier}}' + - match: '(?=[^\w\s])' + set: function-definition-params + - include: unique-strings + - match: '(?=\S)' + set: global-type + + global-type: + - include: comments + - match: \*|& + scope: keyword.operator.c++ + - match: '(?=\b({{control_keywords}}|{{operator_keywords}}|{{casts}}|{{memory_operators}}|{{other_keywords}}|operator)\b)' + pop: true + - match: '(?=\s)' + set: global-maybe-function + # If a class/struct/enum followed by a name that is not a macro or declspec + # then this is likely a return type of a function. This is uncommon. + - match: |- + (?x: + ({{before_tag}}) + \s+ + (?= + (?![[:upper:][:digit:]_]+\b|__declspec|{{before_tag}}) + {{path_lookahead}} + (\s+{{identifier}}\s*\(|\s*[*&]) + ) + ) + captures: + 1: storage.type.c++ + set: + - include: identifiers + - match: '' + set: global-maybe-function + # The previous match handles return types of struct/enum/etc from a func, + # there this one exits the context to allow matching an actual struct/class + - match: '(?=\b({{before_tag}})\b)' + set: data-structures + - match: '(?=\b({{casts}})\b\s*<)' + pop: true + - match: '{{non_angle_brackets}}' + pop: true + - include: angle-brackets + - include: types + # Allow a macro call + - match: '({{identifier}})\s*(\()(?=[^\)]+\))' + captures: + 1: variable.function.c++ + 2: meta.group.c++ punctuation.section.group.begin.c++ + push: + - meta_scope: meta.function-call.c++ + - meta_content_scope: meta.group.c++ + - match: '\)' + scope: meta.group.c++ punctuation.section.group.end.c++ + pop: true + - include: expressions + - match: '(?={{path_lookahead}}\s*\()' + set: + - include: function-call + - match: '' + pop: true + - include: variables + - include: constants + - include: identifiers + - match: (?=\W) + pop: true + + global-maybe-function: + - include: comments + # Consume pointer info, macros and any type info that was offset by macros + - match: \*|& + scope: keyword.operator.c++ + - match: '(?=\b({{control_keywords}}|{{operator_keywords}}|{{casts}}|{{memory_operators}}|{{other_keywords}})\b)' + pop: true + - match: '\b({{type_qualifier}})\b' + scope: storage.modifier.c++ + - match: '{{non_angle_brackets}}' + pop: true + - include: angle-brackets + - include: types + - include: modifiers-parens + - include: modifiers + # All uppercase identifier just before a newline is most likely a macro + - match: '[[:upper:][:digit:]_]+\s*$' + # Operator overloading + - match: '(?=({{path_lookahead}}\s*(?:{{generic_lookahead}})?::\s*)?{{operator_method_name}}\s*(\(|$))' + set: + - meta_content_scope: meta.function.c++ entity.name.function.c++ + - include: identifiers + - match: '(?=\s*(\(|$))' + set: function-definition-params + # Identifier that is not the function name - likely a macro or type + - match: '(?={{path_lookahead}}([ \t]+|[*&])(?!\s*(<|::|\(|$)))' + push: + - include: identifiers + - match: '' + pop: true + # Real function definition + - match: '(?={{path_lookahead}}({{generic_lookahead}}({{path_lookahead}})?)\s*(\(|$))' + set: [function-definition-params, global-function-identifier-generic] + - match: '(?={{path_lookahead}}\s*(\(|$))' + set: [function-definition-params, global-function-identifier] + - match: '(?={{path_lookahead}}\s*::\s*$)' + set: [function-definition-params, global-function-identifier] + - match: '(?=\S)' + pop: true + + global-function-identifier-generic: + - include: angle-brackets + - match: '::' + scope: punctuation.accessor.c++ + - match: '(?={{identifier}}<.*>\s*\()' + push: + - meta_content_scope: entity.name.function.c++ + - include: identifiers + - match: '(?=<)' + pop: true + - match: '(?={{identifier}}\s*\()' + push: + - meta_content_scope: entity.name.function.c++ + - include: identifiers + - match: '' + pop: true + - match: '(?=\()' + pop: true + + global-function-identifier: + - meta_content_scope: entity.name.function.c++ + - include: identifiers + - match: '(?=\S)' + pop: true + + function-definition-params: + - meta_content_scope: meta.function.c++ + - include: comments + - match: '(?=\()' + set: + - match: \( + scope: meta.function.parameters.c++ meta.group.c++ punctuation.section.group.begin.c++ + set: + - meta_content_scope: meta.function.parameters.c++ meta.group.c++ + - match : \) + scope: punctuation.section.group.end.c++ + set: function-definition-continue + - match: '\bvoid\b' + scope: storage.type.c++ + - match: '{{identifier}}(?=\s*(\[|,|\)|=))' + scope: variable.parameter.c++ + - match: '=' + scope: keyword.operator.assignment.c++ + push: + - match: '(?=,|\))' + pop: true + - include: expressions-minus-generic-type + - include: scope:source.c#preprocessor-line-continuation + - include: expressions-minus-generic-type + - include: scope:source.c#preprocessor-line-continuation + - match: (?=\S) + pop: true + + function-definition-continue: + - meta_content_scope: meta.function.c++ + - include: comments + - match: '(?=;)' + pop: true + - match: '->' + scope: punctuation.separator.c++ + set: function-definition-trailing-return + - include: function-specifiers + - match: '=' + scope: keyword.operator.assignment.c++ + - match: '&' + scope: keyword.operator.c++ + - match: \b0\b + scope: constant.numeric.c++ + - match: \b(default|delete)\b + scope: storage.modifier.c++ + - match: '(?=\{)' + set: function-definition-body + - match: '(?=\S)' + pop: true + + function-definition-trailing-return: + - include: comments + - match: '(?=;)' + pop: true + - match: '(?=\{)' + set: function-definition-body + - include: function-specifiers + - include: function-trailing-return-type + + function-definition-body: + - meta_content_scope: meta.function.c++ meta.block.c++ + - match: '\{' + scope: punctuation.section.block.begin.c++ + set: + - meta_content_scope: meta.function.c++ meta.block.c++ + - match: '\}' + scope: meta.function.c++ meta.block.c++ punctuation.section.block.end.c++ + pop: true + - match: (?=^\s*#\s*(elif|else|endif)\b) + pop: true + - match: '(?=({{before_tag}})([^(;]+$|.*\{))' + push: data-structures + - include: statements + + ## Data structures including classes, structs, unions and enums + + data-structures: + - match: '\bclass\b' + scope: storage.type.c++ + set: data-structures-class-definition + # Detect variable type definitions using struct/enum/union followed by a tag + - match: '\b({{before_tag}})(?=\s+{{path_lookahead}}\s+{{path_lookahead}}\s*[=;\[])' + scope: storage.type.c++ + - match: '\bstruct\b' + scope: storage.type.c++ + set: data-structures-struct-definition + - match: '\benum(\s+(class|struct))?\b' + scope: storage.type.c++ + set: data-structures-enum-definition + - match: '\bunion\b' + scope: storage.type.c++ + set: data-structures-union-definition + - match: '(?=\S)' + pop: true + + preprocessor-workaround-eat-macro-before-identifier: + # Handle macros so they aren't matched as the class name + - match: ({{macro_identifier}})(?=\s+~?{{identifier}}) + captures: + 1: meta.assumed-macro.c + + data-structures-class-definition: + - meta_scope: meta.class.c++ + - include: data-structures-definition-common-begin + - match: '{{identifier}}(?={{data_structures_forward_decl_lookahead}})' + scope: entity.name.class.forward-decl.c++ + set: data-structures-class-definition-after-identifier + - match: '{{identifier}}' + scope: entity.name.class.c++ + set: data-structures-class-definition-after-identifier + - match: '(?=[:{])' + set: data-structures-class-definition-after-identifier + - match: '(?=;)' + pop: true + + data-structures-class-definition-after-identifier: + - meta_content_scope: meta.class.c++ + - include: data-structures-definition-common-begin + # No matching of identifiers since they should all be macros at this point + - include: data-structures-definition-common-end + - match: '\{' + scope: meta.block.c++ punctuation.section.block.begin.c++ + set: + - meta_content_scope: meta.class.c++ meta.block.c++ + - match: '\}' + scope: meta.class.c++ meta.block.c++ punctuation.section.block.end.c++ + pop: true + - include: data-structures-body + + data-structures-struct-definition: + - meta_scope: meta.struct.c++ + - include: data-structures-definition-common-begin + - match: '{{identifier}}(?={{data_structures_forward_decl_lookahead}})' + scope: entity.name.struct.forward-decl.c++ + set: data-structures-struct-definition-after-identifier + - match: '{{identifier}}' + scope: entity.name.struct.c++ + set: data-structures-struct-definition-after-identifier + - match: '(?=[:{])' + set: data-structures-struct-definition-after-identifier + - match: '(?=;)' + pop: true + + data-structures-struct-definition-after-identifier: + - meta_content_scope: meta.struct.c++ + - include: data-structures-definition-common-begin + # No matching of identifiers since they should all be macros at this point + - include: data-structures-definition-common-end + - match: '\{' + scope: meta.block.c++ punctuation.section.block.begin.c++ + set: + - meta_content_scope: meta.struct.c++ meta.block.c++ + - match: '\}' + scope: meta.struct.c++ meta.block.c++ punctuation.section.block.end.c++ + pop: true + - include: data-structures-body + + data-structures-enum-definition: + - meta_scope: meta.enum.c++ + - include: data-structures-definition-common-begin + - match: '{{identifier}}(?={{data_structures_forward_decl_lookahead}})' + scope: entity.name.enum.forward-decl.c++ + set: data-structures-enum-definition-after-identifier + - match: '{{identifier}}' + scope: entity.name.enum.c++ + set: data-structures-enum-definition-after-identifier + - match: '(?=[:{])' + set: data-structures-enum-definition-after-identifier + - match: '(?=;)' + pop: true + + data-structures-enum-definition-after-identifier: + - meta_content_scope: meta.enum.c++ + - include: data-structures-definition-common-begin + # No matching of identifiers since they should all be macros at this point + - include: data-structures-definition-common-end + - match: '\{' + scope: meta.block.c++ punctuation.section.block.begin.c++ + set: + - meta_content_scope: meta.enum.c++ meta.block.c++ + # Enums don't support methods so we have a simplified body + - match: '\}' + scope: meta.enum.c++ meta.block.c++ punctuation.section.block.end.c++ + pop: true + - include: statements + + data-structures-union-definition: + - meta_scope: meta.union.c++ + - include: data-structures-definition-common-begin + - match: '{{identifier}}(?={{data_structures_forward_decl_lookahead}})' + scope: entity.name.union.forward-decl.c++ + set: data-structures-union-definition-after-identifier + - match: '{{identifier}}' + scope: entity.name.union.c++ + set: data-structures-union-definition-after-identifier + - match: '(?=[{])' + set: data-structures-union-definition-after-identifier + - match: '(?=;)' + pop: true + + data-structures-union-definition-after-identifier: + - meta_content_scope: meta.union.c++ + - include: data-structures-definition-common-begin + # No matching of identifiers since they should all be macros at this point + # Unions don't support base classes + - include: angle-brackets + - match: '\{' + scope: meta.block.c++ punctuation.section.block.begin.c++ + set: + - meta_content_scope: meta.union.c++ meta.block.c++ + - match: '\}' + scope: meta.union.c++ meta.block.c++ punctuation.section.block.end.c++ + pop: true + - include: data-structures-body + - match: '(?=;)' + pop: true + + data-structures-definition-common-begin: + - include: comments + - match: '(?=\b(?:{{before_tag}}|{{control_keywords}})\b)' + pop: true + - include: preprocessor-other + - include: modifiers-parens + - include: modifiers + - include: preprocessor-workaround-eat-macro-before-identifier + + data-structures-definition-common-end: + - include: angle-brackets + - match: \bfinal\b + scope: storage.modifier.c++ + - match: ':' + scope: punctuation.separator.c++ + push: + - include: comments + - include: preprocessor-other + - include: modifiers-parens + - include: modifiers + - match: '\b(virtual|{{visibility_modifiers}})\b' + scope: storage.modifier.c++ + - match: (?={{path_lookahead}}) + push: + - meta_scope: entity.other.inherited-class.c++ + - include: identifiers + - match: '' + pop: true + - include: angle-brackets + - match: ',' + scope: punctuation.separator.c++ + - match: (?=\{|;) + pop: true + - match: '(?=;)' + pop: true + + data-structures-body: + - include: preprocessor-data-structures + - match: '(?=\btemplate\b)' + push: + - include: template + - match: (?=\S) + set: data-structures-modifier + - include: typedef + - match: \b({{visibility_modifiers}})\s*(:)(?!:) + captures: + 1: storage.modifier.c++ + 2: punctuation.section.class.c++ + - match: '^\s*(?=(?:~?\w+|::))' + push: data-structures-modifier + - include: expressions-minus-generic-type + + data-structures-modifier: + - match: '\bfriend\b' + scope: storage.modifier.c++ + push: + - match: (?=;) + pop: true + - match: '\{' + scope: punctuation.section.block.begin.c++ + set: + - meta_scope: meta.block.c++ + - match: '\}' + scope: punctuation.section.block.end.c++ + pop: true + - include: statements + - match: '\b({{before_tag}})\b' + scope: storage.type.c++ + - include: expressions-minus-function-call + - include: comments + - include: modifiers-parens + - include: modifiers + - match: '\bstatic_assert(?=\s*\()' + scope: meta.static-assert.c++ keyword.operator.word.c++ + push: + - match: '\(' + scope: meta.group.c++ punctuation.section.group.begin.c++ + set: + - meta_content_scope: meta.function-call.c++ meta.group.c++ + - match: '\)' + scope: meta.function-call.c++ meta.group.c++ punctuation.section.group.end.c++ + pop: true + - include: expressions + # Destructor + - match: '(?:{{identifier}}\s*(::)\s*)?~{{identifier}}(?=\s*(\(|$))' + scope: meta.method.destructor.c++ entity.name.function.destructor.c++ + captures: + 1: punctuation.accessor.c++ + set: method-definition-params + # It's a macro, not a constructor if there is no type in the first param + - match: '({{identifier}})\s*(\()(?=\s*(?!void){{identifier}}\s*[),])' + captures: + 1: variable.function.c++ + 2: meta.group.c++ punctuation.section.group.begin.c++ + push: + - meta_scope: meta.function-call.c++ + - meta_content_scope: meta.group.c++ + - match: '\)' + scope: meta.group.c++ punctuation.section.group.end.c++ + pop: true + - include: expressions + # Constructor + - include: preprocessor-workaround-eat-macro-before-identifier + - match: '((?!{{before_tag}}|template){{identifier}})(?=\s*\()' + scope: meta.method.constructor.c++ entity.name.function.constructor.c++ + set: method-definition-params + # Long form constructor + - match: '({{identifier}}\s*(::)\s*{{identifier}})(?=\s*\()' + captures: + 1: meta.method.constructor.c++ entity.name.function.constructor.c++ + 2: punctuation.accessor.c++ + push: method-definition-params + - match: '(?=\S)' + set: data-structures-type + + data-structures-type: + - include: comments + - match: \*|& + scope: keyword.operator.c++ + # Cast methods + - match: '(operator)\s+({{identifier}})(?=\s*(\(|$))' + captures: + 1: keyword.control.c++ + 2: meta.method.c++ entity.name.function.c++ + set: method-definition-params + - match: '(?=\b({{control_keywords}}|{{operator_keywords}}|{{casts}}|{{memory_operators}}|{{other_keywords}}|operator)\b)' + pop: true + - match: '(?=\s)' + set: data-structures-maybe-method + # If a class/struct/enum followed by a name that is not a macro or declspec + # then this is likely a return type of a function. This is uncommon. + - match: |- + (?x: + ({{before_tag}}) + \s+ + (?= + (?![[:upper:][:digit:]_]+\b|__declspec|{{before_tag}}) + {{path_lookahead}} + (\s+{{identifier}}\s*\(|\s*[*&]) + ) + ) + captures: + 1: storage.type.c++ + set: + - include: identifiers + - match: '' + set: data-structures-maybe-method + # The previous match handles return types of struct/enum/etc from a func, + # there this one exits the context to allow matching an actual struct/class + - match: '(?=\b({{before_tag}})\b)' + set: data-structures + - match: '(?=\b({{casts}})\b\s*<)' + pop: true + - match: '{{non_angle_brackets}}' + pop: true + - include: angle-brackets + - include: types + - include: variables + - include: constants + - include: identifiers + - match: (?=[&*]) + set: data-structures-maybe-method + - match: (?=\W) + pop: true + + data-structures-maybe-method: + - include: comments + # Consume pointer info, macros and any type info that was offset by macros + - match: \*|& + scope: keyword.operator.c++ + - match: '(?=\b({{control_keywords}}|{{operator_keywords}}|{{casts}}|{{memory_operators}}|{{other_keywords}})\b)' + pop: true + - match: '\b({{type_qualifier}})\b' + scope: storage.modifier.c++ + - match: '{{non_angle_brackets}}' + pop: true + - include: angle-brackets + - include: types + - include: modifiers-parens + - include: modifiers + # Operator overloading + - match: '{{operator_method_name}}(?=\s*(\(|$))' + scope: meta.method.c++ entity.name.function.c++ + set: method-definition-params + # Identifier that is not the function name - likely a macro or type + - match: '(?={{path_lookahead}}([ \t]+|[*&])(?!\s*(<|::|\()))' + push: + - include: identifiers + - match: '' + pop: true + # Real function definition + - match: '(?={{path_lookahead}}({{generic_lookahead}})\s*(\())' + set: [method-definition-params, data-structures-function-identifier-generic] + - match: '(?={{path_lookahead}}\s*(\())' + set: [method-definition-params, data-structures-function-identifier] + - match: '(?={{path_lookahead}}\s*::\s*$)' + set: [method-definition-params, data-structures-function-identifier] + - match: '(?=\S)' + pop: true + + data-structures-function-identifier-generic: + - include: angle-brackets + - match: '(?={{identifier}})' + push: + - meta_content_scope: entity.name.function.c++ + - include: identifiers + - match: '(?=<)' + pop: true + - match: '(?=\()' + pop: true + + data-structures-function-identifier: + - meta_content_scope: entity.name.function.c++ + - include: identifiers + - match: '(?=\S)' + pop: true + + method-definition-params: + - meta_content_scope: meta.method.c++ + - include: comments + - match: '(?=\()' + set: + - match: \( + scope: meta.method.parameters.c++ meta.group.c++ punctuation.section.group.begin.c++ + set: + - meta_content_scope: meta.method.parameters.c++ meta.group.c++ + - match : \) + scope: punctuation.section.group.end.c++ + set: method-definition-continue + - match: '\bvoid\b' + scope: storage.type.c++ + - match: '{{identifier}}(?=\s*(\[|,|\)|=))' + scope: variable.parameter.c++ + - match: '=' + scope: keyword.operator.assignment.c++ + push: + - match: '(?=,|\))' + pop: true + - include: expressions-minus-generic-type + - include: expressions-minus-generic-type + - match: '(?=\S)' + pop: true + + method-definition-continue: + - meta_content_scope: meta.method.c++ + - include: comments + - match: '(?=;)' + pop: true + - match: '->' + scope: punctuation.separator.c++ + set: method-definition-trailing-return + - include: function-specifiers + - match: '=' + scope: keyword.operator.assignment.c++ + - match: '&' + scope: keyword.operator.c++ + - match: \b0\b + scope: constant.numeric.c++ + - match: \b(default|delete)\b + scope: storage.modifier.c++ + - match: '(?=:)' + set: + - match: ':' + scope: punctuation.separator.initializer-list.c++ + set: + - meta_scope: meta.method.constructor.initializer-list.c++ + - match: '{{identifier}}' + scope: variable.other.readwrite.member.c++ + push: + - match: \( + scope: meta.group.c++ punctuation.section.group.begin.c++ + set: + - meta_content_scope: meta.group.c++ + - match: \) + scope: meta.group.c++ punctuation.section.group.end.c++ + pop: true + - include: expressions + - match: \{ + scope: meta.group.c++ punctuation.section.group.begin.c++ + set: + - meta_content_scope: meta.group.c++ + - match: \} + scope: meta.group.c++ punctuation.section.group.end.c++ + pop: true + - include: expressions + - include: comments + - match: (?=\{|;) + set: method-definition-continue + - include: expressions + - match: '(?=\{)' + set: method-definition-body + - match: '(?=\S)' + pop: true + + method-definition-trailing-return: + - include: comments + - match: '(?=;)' + pop: true + - match: '(?=\{)' + set: method-definition-body + - include: function-specifiers + - include: function-trailing-return-type + + method-definition-body: + - meta_content_scope: meta.method.c++ meta.block.c++ + - match: '\{' + scope: punctuation.section.block.begin.c++ + set: + - meta_content_scope: meta.method.c++ meta.block.c++ + - match: '\}' + scope: meta.method.c++ meta.block.c++ punctuation.section.block.end.c++ + pop: true + - match: (?=^\s*#\s*(elif|else|endif)\b) + pop: true + - match: '(?=({{before_tag}})([^(;]+$|.*\{))' + push: data-structures + - include: statements + + ## Preprocessor for data-structures + + preprocessor-data-structures: + - include: preprocessor-rule-enabled-data-structures + - include: preprocessor-rule-disabled-data-structures + - include: preprocessor-practical-workarounds + + preprocessor-rule-disabled-data-structures: + - match: ^\s*((#if)\s+(0))\b + captures: + 1: meta.preprocessor.c++ + 2: keyword.control.import.c++ + 3: constant.numeric.preprocessor.c++ + push: + - match: ^\s*(#\s*endif)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.c++ + pop: true + - match: ^\s*(#\s*else)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.else.c++ + push: + - match: (?=^\s*#\s*endif\b) + pop: true + - include: negated-block + - include: data-structures-body + - match: "" + push: + - meta_scope: comment.block.preprocessor.if-branch.c++ + - match: (?=^\s*#\s*(else|endif)\b) + pop: true + - include: scope:source.c#preprocessor-disabled + + preprocessor-rule-enabled-data-structures: + - match: ^\s*((#if)\s+(0*1))\b + captures: + 1: meta.preprocessor.c++ + 2: keyword.control.import.c++ + 3: constant.numeric.preprocessor.c++ + push: + - match: ^\s*(#\s*endif)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.c++ + pop: true + - match: ^\s*(#\s*else)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.else.c++ + push: + - meta_content_scope: comment.block.preprocessor.else-branch.c++ + - match: (?=^\s*#\s*endif\b) + pop: true + - include: scope:source.c#preprocessor-disabled + - match: "" + push: + - match: (?=^\s*#\s*(else|endif)\b) + pop: true + - include: negated-block + - include: data-structures-body + + ## Preprocessor for global + + preprocessor-global: + - include: preprocessor-rule-enabled-global + - include: preprocessor-rule-disabled-global + - include: preprocessor-rule-other-global + + preprocessor-statements: + - include: preprocessor-rule-enabled-statements + - include: preprocessor-rule-disabled-statements + - include: preprocessor-rule-other-statements + + preprocessor-expressions: + - include: scope:source.c#incomplete-inc + - include: preprocessor-macro-define + - include: scope:source.c#pragma-mark + - include: preprocessor-other + + preprocessor-rule-disabled-global: + - match: ^\s*((#if)\s+(0))\b + captures: + 1: meta.preprocessor.c++ + 2: keyword.control.import.c++ + 3: constant.numeric.preprocessor.c++ + push: + - match: ^\s*(#\s*endif)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.c++ + pop: true + - match: ^\s*(#\s*else)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.else.c++ + push: + - match: (?=^\s*#\s*endif\b) + pop: true + - include: preprocessor-global + - include: negated-block + - include: global + - match: "" + push: + - meta_scope: comment.block.preprocessor.if-branch.c++ + - match: (?=^\s*#\s*(else|endif)\b) + pop: true + - include: scope:source.c#preprocessor-disabled + + preprocessor-rule-enabled-global: + - match: ^\s*((#if)\s+(0*1))\b + captures: + 1: meta.preprocessor.c++ + 2: keyword.control.import.c++ + 3: constant.numeric.preprocessor.c++ + push: + - match: ^\s*(#\s*endif)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.c++ + pop: true + - match: ^\s*(#\s*else)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.else.c++ + push: + - meta_content_scope: comment.block.preprocessor.else-branch.c++ + - match: (?=^\s*#\s*endif\b) + pop: true + - include: scope:source.c#preprocessor-disabled + - match: "" + push: + - match: (?=^\s*#\s*(else|endif)\b) + pop: true + - include: preprocessor-global + - include: negated-block + - include: global + + preprocessor-rule-other-global: + - match: ^\s*(#\s*(?:if|ifdef|ifndef))\b + captures: + 1: keyword.control.import.c++ + push: + - meta_scope: meta.preprocessor.c++ + - include: scope:source.c#preprocessor-line-continuation + - include: scope:source.c#preprocessor-comments + - match: \bdefined\b + scope: keyword.control.c++ + # Enter a new scope where all elif/else branches have their + # contexts popped by a subsequent elif/else/endif. This ensures that + # preprocessor branches don't push multiple meta.block scopes on + # the stack, thus messing up the "global" context's detection of + # functions. + - match: $\n + set: preprocessor-if-branch-global + + # These gymnastics here ensure that we are properly handling scope even + # when the preprocessor is used to create different scope beginnings, such + # as a different if/while condition + preprocessor-if-branch-global: + - match: ^\s*(#\s*endif)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.c++ + pop: true + - match: (?=^\s*#\s*(elif|else)\b) + push: preprocessor-elif-else-branch-global + - match: \{ + scope: punctuation.section.block.begin.c++ + set: preprocessor-block-if-branch-global + - include: preprocessor-global + - include: negated-block + - include: global + + preprocessor-block-if-branch-global: + - meta_scope: meta.block.c++ + - match: ^\s*(#\s*endif)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.c++ + set: preprocessor-block-finish-global + - match: (?=^\s*#\s*(elif|else)\b) + push: preprocessor-elif-else-branch-global + - match: \} + scope: punctuation.section.block.end.c++ + set: preprocessor-if-branch-global + - include: statements + + preprocessor-block-finish-global: + - meta_scope: meta.block.c++ + - match: ^\s*(#\s*(?:if|ifdef|ifndef))\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.c++ + set: preprocessor-block-finish-if-branch-global + - match: \} + scope: punctuation.section.block.end.c++ + pop: true + - include: statements + + preprocessor-block-finish-if-branch-global: + - match: ^\s*(#\s*endif)\b + captures: + 1: keyword.control.import.c++ + pop: true + - match: \} + scope: punctuation.section.block.end.c++ + set: preprocessor-if-branch-global + - include: statements + + preprocessor-elif-else-branch-global: + - match: (?=^\s*#\s*(endif)\b) + pop: true + - include: preprocessor-global + - include: negated-block + - include: global + + ## Preprocessor for statements + + preprocessor-rule-disabled-statements: + - match: ^\s*((#if)\s+(0))\b + captures: + 1: meta.preprocessor.c++ + 2: keyword.control.import.c++ + 3: constant.numeric.preprocessor.c++ + push: + - match: ^\s*(#\s*endif)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.c++ + pop: true + - match: ^\s*(#\s*else)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.else.c++ + push: + - match: (?=^\s*#\s*endif\b) + pop: true + - include: negated-block + - include: statements + - match: "" + push: + - meta_scope: comment.block.preprocessor.if-branch.c++ + - match: (?=^\s*#\s*(else|endif)\b) + pop: true + - include: scope:source.c#preprocessor-disabled + + preprocessor-rule-enabled-statements: + - match: ^\s*((#if)\s+(0*1))\b + captures: + 1: meta.preprocessor.c++ + 2: keyword.control.import.c++ + 3: constant.numeric.preprocessor.c++ + push: + - match: ^\s*(#\s*endif)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.c++ + pop: true + - match: ^\s*(#\s*else)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.else.c++ + push: + - meta_content_scope: comment.block.preprocessor.else-branch.c++ + - match: (?=^\s*#\s*endif\b) + pop: true + - include: scope:source.c#preprocessor-disabled + - match: "" + push: + - match: (?=^\s*#\s*(else|endif)\b) + pop: true + - include: negated-block + - include: statements + + preprocessor-rule-other-statements: + - match: ^\s*(#\s*(?:if|ifdef|ifndef))\b + captures: + 1: keyword.control.import.c++ + push: + - meta_scope: meta.preprocessor.c++ + - include: scope:source.c#preprocessor-line-continuation + - include: scope:source.c#preprocessor-comments + - match: \bdefined\b + scope: keyword.control.c++ + # Enter a new scope where all elif/else branches have their + # contexts popped by a subsequent elif/else/endif. This ensures that + # preprocessor branches don't push multiple meta.block scopes on + # the stack, thus messing up the "global" context's detection of + # functions. + - match: $\n + set: preprocessor-if-branch-statements + + # These gymnastics here ensure that we are properly handling scope even + # when the preprocessor is used to create different scope beginnings, such + # as a different if/while condition + preprocessor-if-branch-statements: + - match: ^\s*(#\s*endif)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.c++ + pop: true + - match: (?=^\s*#\s*(elif|else)\b) + push: preprocessor-elif-else-branch-statements + - match: \{ + scope: punctuation.section.block.begin.c++ + set: preprocessor-block-if-branch-statements + - match: (?=(?!{{non_func_keywords}}){{path_lookahead}}\s*\() + set: preprocessor-if-branch-function-call + - include: negated-block + - include: statements + + preprocessor-if-branch-function-call: + - meta_content_scope: meta.function-call.c++ + - include: scope:source.c#c99 + - match: '(?:(::)\s*)?{{identifier}}\s*(::)\s*' + scope: variable.function.c++ + captures: + 1: punctuation.accessor.c++ + 2: punctuation.accessor.c++ + - match: '(?:(::)\s*)?{{identifier}}' + scope: variable.function.c++ + captures: + 1: punctuation.accessor.c++ + - match: '\(' + scope: meta.group.c++ punctuation.section.group.begin.c++ + set: preprocessor-if-branch-function-call-arguments + + preprocessor-if-branch-function-call-arguments: + - meta_content_scope: meta.function-call.c++ meta.group.c++ + - match : \) + scope: meta.function-call.c++ meta.group.c++ punctuation.section.group.end.c++ + set: preprocessor-if-branch-statements + - match: ^\s*(#\s*(?:elif|else))\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.c++ + set: preprocessor-if-branch-statements + - match: ^\s*(#\s*endif)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.c++ + set: preprocessor-if-branch-function-call-arguments-finish + - include: expressions + + preprocessor-if-branch-function-call-arguments-finish: + - meta_content_scope: meta.function-call.c++ meta.group.c++ + - match: \) + scope: meta.function-call.c++ meta.group.c++ punctuation.section.group.end.c++ + pop: true + - include: expressions + + preprocessor-block-if-branch-statements: + - meta_scope: meta.block.c++ + - match: ^\s*(#\s*endif)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.c++ + set: preprocessor-block-finish-statements + - match: (?=^\s*#\s*(elif|else)\b) + push: preprocessor-elif-else-branch-statements + - match: \} + scope: punctuation.section.block.end.c++ + set: preprocessor-if-branch-statements + - include: statements + + preprocessor-block-finish-statements: + - meta_scope: meta.block.c++ + - match: ^\s*(#\s*(?:if|ifdef|ifndef))\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.c++ + set: preprocessor-block-finish-if-branch-statements + - match: \} + scope: punctuation.section.block.end.c++ + pop: true + - include: statements + + preprocessor-block-finish-if-branch-statements: + - match: ^\s*(#\s*endif)\b + captures: + 1: keyword.control.import.c++ + pop: true + - match: \} + scope: meta.block.c++ punctuation.section.block.end.c++ + set: preprocessor-if-branch-statements + - include: statements + + preprocessor-elif-else-branch-statements: + - match: (?=^\s*#\s*endif\b) + pop: true + - include: negated-block + - include: statements + + ## Preprocessor other + + negated-block: + - match: '\}' + scope: punctuation.section.block.end.c++ + push: + - match: '\{' + scope: punctuation.section.block.begin.c++ + pop: true + - match: (?=^\s*#\s*(elif|else|endif)\b) + pop: true + - include: statements + + preprocessor-macro-define: + - match: ^\s*(\#\s*define)\b + captures: + 1: meta.preprocessor.macro.c++ keyword.control.import.define.c++ + push: + - meta_content_scope: meta.preprocessor.macro.c++ + - include: scope:source.c#preprocessor-line-continuation + - include: scope:source.c#preprocessor-line-ending + - include: scope:source.c#preprocessor-comments + - match: '({{identifier}})(?=\()' + scope: entity.name.function.preprocessor.c++ + set: + - match: '\(' + scope: punctuation.section.group.begin.c++ + set: preprocessor-macro-params + - match: '{{identifier}}' + scope: entity.name.constant.preprocessor.c++ + set: preprocessor-macro-definition + + preprocessor-macro-params: + - meta_scope: meta.preprocessor.macro.parameters.c++ meta.group.c++ + - match: '{{identifier}}' + scope: variable.parameter.c++ + - match: \) + scope: punctuation.section.group.end.c++ + set: preprocessor-macro-definition + - match: ',' + scope: punctuation.separator.c++ + push: + - match: '{{identifier}}' + scope: variable.parameter.c++ + pop: true + - include: scope:source.c#preprocessor-line-continuation + - include: scope:source.c#preprocessor-comments + - match: '\.\.\.' + scope: keyword.operator.variadic.c++ + - match: '(?=\))' + pop: true + - match: (/\*).*(\*/) + scope: comment.block.c++ + captures: + 1: punctuation.definition.comment.c++ + 2: punctuation.definition.comment.c++ + - match: '\S+' + scope: invalid.illegal.unexpected-character.c++ + - include: scope:source.c#preprocessor-line-continuation + - include: scope:source.c#preprocessor-comments + - match: '\.\.\.' + scope: keyword.operator.variadic.c++ + - match: (/\*).*(\*/) + scope: comment.block.c++ + captures: + 1: punctuation.definition.comment.c++ + 2: punctuation.definition.comment.c++ + - match: $\n + scope: invalid.illegal.unexpected-end-of-line.c++ + + preprocessor-macro-definition: + - meta_content_scope: meta.preprocessor.macro.c++ + - include: scope:source.c#preprocessor-line-continuation + - include: scope:source.c#preprocessor-line-ending + - include: scope:source.c#preprocessor-comments + # Don't define blocks in define statements + - match: '\{' + scope: punctuation.section.block.begin.c++ + - match: '\}' + scope: punctuation.section.block.end.c++ + - include: expressions + + preprocessor-practical-workarounds: + - include: preprocessor-convention-ignore-uppercase-ident-lines + - include: scope:source.c#preprocessor-convention-ignore-uppercase-calls-without-semicolon + + preprocessor-convention-ignore-uppercase-ident-lines: + - match: ^(\s*{{macro_identifier}})+\s*$ + scope: meta.assumed-macro.c++ + push: + # It's possible that we are dealing with a function return type on its own line, and the + # name of the function is on the subsequent line. + - match: '(?={{path_lookahead}}({{generic_lookahead}}({{path_lookahead}})?)\s*\()' + set: [function-definition-params, global-function-identifier-generic] + - match: '(?={{path_lookahead}}\s*\()' + set: [function-definition-params, global-function-identifier] + - match: ^ + pop: true + + preprocessor-other: + - match: ^\s*(#\s*(?:if|ifdef|ifndef|elif|else|line|pragma|undef))\b + captures: + 1: keyword.control.import.c++ + push: + - meta_scope: meta.preprocessor.c++ + - include: scope:source.c#preprocessor-line-continuation + - include: scope:source.c#preprocessor-line-ending + - include: scope:source.c#preprocessor-comments + - match: \bdefined\b + scope: keyword.control.c++ + - match: ^\s*(#\s*endif)\b + captures: + 1: meta.preprocessor.c++ keyword.control.import.c++ + - match: ^\s*(#\s*(?:error|warning))\b + captures: + 1: keyword.control.import.error.c++ + push: + - meta_scope: meta.preprocessor.diagnostic.c++ + - include: scope:source.c#preprocessor-line-continuation + - include: scope:source.c#preprocessor-line-ending + - include: scope:source.c#preprocessor-comments + - include: strings + - match: '\S+' + scope: string.unquoted.c++ + - match: ^\s*(#\s*(?:include|include_next|import))\b + captures: + 1: keyword.control.import.include.c++ + push: + - meta_scope: meta.preprocessor.include.c++ + - include: scope:source.c#preprocessor-line-continuation + - include: scope:source.c#preprocessor-line-ending + - include: scope:source.c#preprocessor-comments + - match: '"' + scope: punctuation.definition.string.begin.c++ + push: + - meta_scope: string.quoted.double.include.c++ + - match: '"' + scope: punctuation.definition.string.end.c++ + pop: true + - match: < + scope: punctuation.definition.string.begin.c++ + push: + - meta_scope: string.quoted.other.lt-gt.include.c++ + - match: '>' + scope: punctuation.definition.string.end.c++ + pop: true + - include: preprocessor-practical-workarounds diff --git a/Submodules/fmt/support/README b/Submodules/fmt/support/README new file mode 100644 index 0000000..468f548 --- /dev/null +++ b/Submodules/fmt/support/README @@ -0,0 +1,4 @@ +This directory contains build support files such as + +* CMake modules +* Build scripts diff --git a/Submodules/fmt/support/Vagrantfile b/Submodules/fmt/support/Vagrantfile new file mode 100644 index 0000000..9d0ff6a --- /dev/null +++ b/Submodules/fmt/support/Vagrantfile @@ -0,0 +1,19 @@ +# -*- mode: ruby -*- +# vi: set ft=ruby : + +# A vagrant config for testing against gcc-4.8. +Vagrant.configure("2") do |config| + config.vm.box = "bento/ubuntu-22.04-arm64" + + config.vm.provider "vmware_desktop" do |vb| + vb.memory = "4096" + end + + config.vm.provision "shell", inline: <<-SHELL + apt-get update + apt-get install -y g++ make wget git + wget -q https://github.com/Kitware/CMake/releases/download/v3.26.0/cmake-3.26.0-Linux-x86_64.tar.gz + tar xzf cmake-3.26.0-Linux-x86_64.tar.gz + ln -s `pwd`/cmake-3.26.0-Linux-x86_64/bin/cmake /usr/local/bin + SHELL +end diff --git a/Submodules/fmt/support/bazel/.bazelversion b/Submodules/fmt/support/bazel/.bazelversion new file mode 100644 index 0000000..a8a1887 --- /dev/null +++ b/Submodules/fmt/support/bazel/.bazelversion @@ -0,0 +1 @@ +7.1.2 diff --git a/Submodules/fmt/support/bazel/BUILD.bazel b/Submodules/fmt/support/bazel/BUILD.bazel new file mode 100644 index 0000000..1a06ed5 --- /dev/null +++ b/Submodules/fmt/support/bazel/BUILD.bazel @@ -0,0 +1,20 @@ +cc_library( + name = "fmt", + srcs = [ + #"src/fmt.cc", # No C++ module support, yet in Bazel (https://github.com/bazelbuild/bazel/pull/19940) + "src/format.cc", + "src/os.cc", + ], + hdrs = glob([ + "include/fmt/*.h", + ]), + copts = select({ + "@platforms//os:windows": ["-utf-8"], + "//conditions:default": [], + }), + includes = [ + "include", + ], + strip_include_prefix = "include", + visibility = ["//visibility:public"], +) diff --git a/Submodules/fmt/support/bazel/MODULE.bazel b/Submodules/fmt/support/bazel/MODULE.bazel new file mode 100644 index 0000000..6023f36 --- /dev/null +++ b/Submodules/fmt/support/bazel/MODULE.bazel @@ -0,0 +1,6 @@ +module( + name = "fmt", + compatibility_level = 10, +) + +bazel_dep(name = "platforms", version = "0.0.10") diff --git a/Submodules/fmt/support/bazel/README.md b/Submodules/fmt/support/bazel/README.md new file mode 100644 index 0000000..44508f1 --- /dev/null +++ b/Submodules/fmt/support/bazel/README.md @@ -0,0 +1,28 @@ +# Bazel support + +To get [Bazel](https://bazel.build/) working with {fmt} you can copy the files `BUILD.bazel`, +`MODULE.bazel`, `WORKSPACE.bazel`, and `.bazelversion` from this folder (`support/bazel`) to the root folder of this project. +This way {fmt} gets bazelized and can be used with Bazel (e.g. doing a `bazel build //...` on {fmt}). + +## Using {fmt} as a dependency + +### Using Bzlmod + +The [Bazel Central Registry](https://github.com/bazelbuild/bazel-central-registry/tree/main/modules/fmt) provides support for {fmt}. + +For instance, to use {fmt} add to your `MODULE.bazel` file: + +``` +bazel_dep(name = "fmt", version = "10.2.1") +``` + +### Live at head + +For a live-at-head approach, you can copy the contents of this repository and move the Bazel-related build files to the root folder of this project as described above and make use of `local_path_override`, e.g.: + +``` +local_path_override( + module_name = "fmt", + path = "../third_party/fmt", +) +``` diff --git a/Submodules/fmt/support/bazel/WORKSPACE.bazel b/Submodules/fmt/support/bazel/WORKSPACE.bazel new file mode 100644 index 0000000..b1be18f --- /dev/null +++ b/Submodules/fmt/support/bazel/WORKSPACE.bazel @@ -0,0 +1,2 @@ +# WORKSPACE marker file needed by Bazel + diff --git a/Submodules/fmt/support/build.gradle b/Submodules/fmt/support/build.gradle new file mode 100644 index 0000000..c5126d0 --- /dev/null +++ b/Submodules/fmt/support/build.gradle @@ -0,0 +1,132 @@ +import java.nio.file.Paths + +// General gradle arguments for root project +buildscript { + repositories { + google() + jcenter() + } + dependencies { + // + // https://developer.android.com/studio/releases/gradle-plugin#updating-gradle + // + // Notice that 4.0.0 here is the version of [Android Gradle Plugin] + // According to URL above you will need Gradle 6.1 or higher + // + classpath "com.android.tools.build:gradle:4.1.1" + } +} +repositories { + google() + jcenter() +} + +// Project's root where CMakeLists.txt exists: rootDir/support/.cxx -> rootDir +def rootDir = Paths.get(project.buildDir.getParent()).getParent() +println("rootDir: ${rootDir}") + +// Output: Shared library (.so) for Android +apply plugin: "com.android.library" +android { + compileSdkVersion 25 // Android 7.0 + + // Target ABI + // - This option controls target platform of module + // - The platform might be limited by compiler's support + // some can work with Clang(default), but some can work only with GCC... + // if bad, both toolchains might not support it + splits { + abi { + enable true + // Specify platforms for Application + reset() + include "arm64-v8a", "armeabi-v7a", "x86_64" + } + } + ndkVersion "21.3.6528147" // ANDROID_NDK_HOME is deprecated. Be explicit + + defaultConfig { + minSdkVersion 21 // Android 5.0+ + targetSdkVersion 25 // Follow Compile SDK + versionCode 34 // Follow release count + versionName "7.1.2" // Follow Official version + + externalNativeBuild { + cmake { + arguments "-DANDROID_STL=c++_shared" // Specify Android STL + arguments "-DBUILD_SHARED_LIBS=true" // Build shared object + arguments "-DFMT_TEST=false" // Skip test + arguments "-DFMT_DOC=false" // Skip document + cppFlags "-std=c++17" + targets "fmt" + } + } + println(externalNativeBuild.cmake.cppFlags) + println(externalNativeBuild.cmake.arguments) + } + + // External Native build + // - Use existing CMakeList.txt + // - Give path to CMake. This gradle file should be + // neighbor of the top level cmake + externalNativeBuild { + cmake { + version "3.10.0+" + path "${rootDir}/CMakeLists.txt" + // buildStagingDirectory "./build" // Custom path for cmake output + } + } + + sourceSets{ + // Android Manifest for Gradle + main { + manifest.srcFile "AndroidManifest.xml" + } + } + + // https://developer.android.com/studio/build/native-dependencies#build_system_configuration + buildFeatures { + prefab true + prefabPublishing true + } + prefab { + fmt { + headers "${rootDir}/include" + } + } +} + +assemble.doLast +{ + // Instead of `ninja install`, Gradle will deploy the files. + // We are doing this since FMT is dependent to the ANDROID_STL after build + copy { + from "build/intermediates/cmake" + into "${rootDir}/libs" + } + // Copy debug binaries + copy { + from "${rootDir}/libs/debug/obj" + into "${rootDir}/libs/debug" + } + // Copy Release binaries + copy { + from "${rootDir}/libs/release/obj" + into "${rootDir}/libs/release" + } + // Remove empty directory + delete "${rootDir}/libs/debug/obj" + delete "${rootDir}/libs/release/obj" + + // Copy AAR files. Notice that the aar is named after the folder of this script. + copy { + from "build/outputs/aar/support-release.aar" + into "${rootDir}/libs" + rename "support-release.aar", "fmt-release.aar" + } + copy { + from "build/outputs/aar/support-debug.aar" + into "${rootDir}/libs" + rename "support-debug.aar", "fmt-debug.aar" + } +} diff --git a/Submodules/fmt/support/check-commits b/Submodules/fmt/support/check-commits new file mode 100755 index 0000000..11472d4 --- /dev/null +++ b/Submodules/fmt/support/check-commits @@ -0,0 +1,43 @@ +#!/usr/bin/env python3 + +"""Compile source on a range of commits + +Usage: + check-commits +""" + +import docopt, os, sys, tempfile +from subprocess import check_call, check_output, run + +args = docopt.docopt(__doc__) +start = args.get('') +source = args.get('') + +cwd = os.getcwd() + +with tempfile.TemporaryDirectory() as work_dir: + check_call(['git', 'clone', 'https://github.com/fmtlib/fmt.git'], + cwd=work_dir) + repo_dir = os.path.join(work_dir, 'fmt') + commits = check_output( + ['git', 'rev-list', f'{start}..HEAD', '--abbrev-commit', + '--', 'include', 'src'], + text=True, cwd=repo_dir).rstrip().split('\n') + commits.reverse() + print('Time\tCommit') + for commit in commits: + check_call(['git', '-c', 'advice.detachedHead=false', 'checkout', commit], + cwd=repo_dir) + returncode = run( + ['c++', '-std=c++11', '-O3', '-DNDEBUG', '-I', 'include', + 'src/format.cc', os.path.join(cwd, source)], cwd=repo_dir).returncode + if returncode != 0: + continue + times = [] + for i in range(5): + output = check_output([os.path.join(repo_dir, 'a.out')], text=True) + times.append(float(output)) + message = check_output(['git', 'log', '-1', '--pretty=format:%s', commit], + cwd=repo_dir, text=True) + print(f'{min(times)}\t{commit} {message[:40]}') + sys.stdout.flush() diff --git a/Submodules/fmt/support/cmake/FindSetEnv.cmake b/Submodules/fmt/support/cmake/FindSetEnv.cmake new file mode 100644 index 0000000..4e2da54 --- /dev/null +++ b/Submodules/fmt/support/cmake/FindSetEnv.cmake @@ -0,0 +1,7 @@ +# A CMake script to find SetEnv.cmd. + +find_program(WINSDK_SETENV NAMES SetEnv.cmd + PATHS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Microsoft SDKs\\Windows;CurrentInstallFolder]/bin") +if (WINSDK_SETENV AND PRINT_PATH) + execute_process(COMMAND ${CMAKE_COMMAND} -E echo "${WINSDK_SETENV}") +endif () diff --git a/Submodules/fmt/support/cmake/JoinPaths.cmake b/Submodules/fmt/support/cmake/JoinPaths.cmake new file mode 100644 index 0000000..32d6d66 --- /dev/null +++ b/Submodules/fmt/support/cmake/JoinPaths.cmake @@ -0,0 +1,26 @@ +# This module provides function for joining paths +# known from from most languages +# +# Original license: +# SPDX-License-Identifier: (MIT OR CC0-1.0) +# Explicit permission given to distribute this module under +# the terms of the project as described in /LICENSE.rst. +# Copyright 2020 Jan Tojnar +# https://github.com/jtojnar/cmake-snips +# +# Modelled after Python’s os.path.join +# https://docs.python.org/3.7/library/os.path.html#os.path.join +# Windows not supported +function(join_paths joined_path first_path_segment) + set(temp_path "${first_path_segment}") + foreach(current_segment IN LISTS ARGN) + if(NOT ("${current_segment}" STREQUAL "")) + if(IS_ABSOLUTE "${current_segment}") + set(temp_path "${current_segment}") + else() + set(temp_path "${temp_path}/${current_segment}") + endif() + endif() + endforeach() + set(${joined_path} "${temp_path}" PARENT_SCOPE) +endfunction() diff --git a/Submodules/fmt/support/cmake/fmt-config.cmake.in b/Submodules/fmt/support/cmake/fmt-config.cmake.in new file mode 100644 index 0000000..bc1684f --- /dev/null +++ b/Submodules/fmt/support/cmake/fmt-config.cmake.in @@ -0,0 +1,7 @@ +@PACKAGE_INIT@ + +if (NOT TARGET fmt::fmt) + include(${CMAKE_CURRENT_LIST_DIR}/@targets_export_name@.cmake) +endif () + +check_required_components(fmt) diff --git a/Submodules/fmt/support/cmake/fmt.pc.in b/Submodules/fmt/support/cmake/fmt.pc.in new file mode 100644 index 0000000..29976a8 --- /dev/null +++ b/Submodules/fmt/support/cmake/fmt.pc.in @@ -0,0 +1,11 @@ +prefix=@CMAKE_INSTALL_PREFIX@ +exec_prefix=@CMAKE_INSTALL_PREFIX@ +libdir=@libdir_for_pc_file@ +includedir=@includedir_for_pc_file@ + +Name: fmt +Description: A modern formatting library +Version: @FMT_VERSION@ +Libs: -L${libdir} -l@FMT_LIB_NAME@ +Cflags: -I${includedir} + diff --git a/Submodules/fmt/support/docopt.py b/Submodules/fmt/support/docopt.py new file mode 100644 index 0000000..2e43f7c --- /dev/null +++ b/Submodules/fmt/support/docopt.py @@ -0,0 +1,581 @@ +"""Pythonic command-line interface parser that will make you smile. + + * http://docopt.org + * Repository and issue-tracker: https://github.com/docopt/docopt + * Licensed under terms of MIT license (see LICENSE-MIT) + * Copyright (c) 2013 Vladimir Keleshev, vladimir@keleshev.com + +""" +import sys +import re + + +__all__ = ['docopt'] +__version__ = '0.6.1' + + +class DocoptLanguageError(Exception): + + """Error in construction of usage-message by developer.""" + + +class DocoptExit(SystemExit): + + """Exit in case user invoked program with incorrect arguments.""" + + usage = '' + + def __init__(self, message=''): + SystemExit.__init__(self, (message + '\n' + self.usage).strip()) + + +class Pattern(object): + + def __eq__(self, other): + return repr(self) == repr(other) + + def __hash__(self): + return hash(repr(self)) + + def fix(self): + self.fix_identities() + self.fix_repeating_arguments() + return self + + def fix_identities(self, uniq=None): + """Make pattern-tree tips point to same object if they are equal.""" + if not hasattr(self, 'children'): + return self + uniq = list(set(self.flat())) if uniq is None else uniq + for i, child in enumerate(self.children): + if not hasattr(child, 'children'): + assert child in uniq + self.children[i] = uniq[uniq.index(child)] + else: + child.fix_identities(uniq) + + def fix_repeating_arguments(self): + """Fix elements that should accumulate/increment values.""" + either = [list(child.children) for child in transform(self).children] + for case in either: + for e in [child for child in case if case.count(child) > 1]: + if type(e) is Argument or type(e) is Option and e.argcount: + if e.value is None: + e.value = [] + elif type(e.value) is not list: + e.value = e.value.split() + if type(e) is Command or type(e) is Option and e.argcount == 0: + e.value = 0 + return self + + +def transform(pattern): + """Expand pattern into an (almost) equivalent one, but with single Either. + + Example: ((-a | -b) (-c | -d)) => (-a -c | -a -d | -b -c | -b -d) + Quirks: [-a] => (-a), (-a...) => (-a -a) + + """ + result = [] + groups = [[pattern]] + while groups: + children = groups.pop(0) + parents = [Required, Optional, OptionsShortcut, Either, OneOrMore] + if any(t in map(type, children) for t in parents): + child = [c for c in children if type(c) in parents][0] + children.remove(child) + if type(child) is Either: + for c in child.children: + groups.append([c] + children) + elif type(child) is OneOrMore: + groups.append(child.children * 2 + children) + else: + groups.append(child.children + children) + else: + result.append(children) + return Either(*[Required(*e) for e in result]) + + +class LeafPattern(Pattern): + + """Leaf/terminal node of a pattern tree.""" + + def __init__(self, name, value=None): + self.name, self.value = name, value + + def __repr__(self): + return '%s(%r, %r)' % (self.__class__.__name__, self.name, self.value) + + def flat(self, *types): + return [self] if not types or type(self) in types else [] + + def match(self, left, collected=None): + collected = [] if collected is None else collected + pos, match = self.single_match(left) + if match is None: + return False, left, collected + left_ = left[:pos] + left[pos + 1:] + same_name = [a for a in collected if a.name == self.name] + if type(self.value) in (int, list): + if type(self.value) is int: + increment = 1 + else: + increment = ([match.value] if type(match.value) is str + else match.value) + if not same_name: + match.value = increment + return True, left_, collected + [match] + same_name[0].value += increment + return True, left_, collected + return True, left_, collected + [match] + + +class BranchPattern(Pattern): + + """Branch/inner node of a pattern tree.""" + + def __init__(self, *children): + self.children = list(children) + + def __repr__(self): + return '%s(%s)' % (self.__class__.__name__, + ', '.join(repr(a) for a in self.children)) + + def flat(self, *types): + if type(self) in types: + return [self] + return sum([child.flat(*types) for child in self.children], []) + + +class Argument(LeafPattern): + + def single_match(self, left): + for n, pattern in enumerate(left): + if type(pattern) is Argument: + return n, Argument(self.name, pattern.value) + return None, None + + @classmethod + def parse(class_, source): + name = re.findall('(<\S*?>)', source)[0] + value = re.findall('\[default: (.*)\]', source, flags=re.I) + return class_(name, value[0] if value else None) + + +class Command(Argument): + + def __init__(self, name, value=False): + self.name, self.value = name, value + + def single_match(self, left): + for n, pattern in enumerate(left): + if type(pattern) is Argument: + if pattern.value == self.name: + return n, Command(self.name, True) + else: + break + return None, None + + +class Option(LeafPattern): + + def __init__(self, short=None, long=None, argcount=0, value=False): + assert argcount in (0, 1) + self.short, self.long, self.argcount = short, long, argcount + self.value = None if value is False and argcount else value + + @classmethod + def parse(class_, option_description): + short, long, argcount, value = None, None, 0, False + options, _, description = option_description.strip().partition(' ') + options = options.replace(',', ' ').replace('=', ' ') + for s in options.split(): + if s.startswith('--'): + long = s + elif s.startswith('-'): + short = s + else: + argcount = 1 + if argcount: + matched = re.findall('\[default: (.*)\]', description, flags=re.I) + value = matched[0] if matched else None + return class_(short, long, argcount, value) + + def single_match(self, left): + for n, pattern in enumerate(left): + if self.name == pattern.name: + return n, pattern + return None, None + + @property + def name(self): + return self.long or self.short + + def __repr__(self): + return 'Option(%r, %r, %r, %r)' % (self.short, self.long, + self.argcount, self.value) + + +class Required(BranchPattern): + + def match(self, left, collected=None): + collected = [] if collected is None else collected + l = left + c = collected + for pattern in self.children: + matched, l, c = pattern.match(l, c) + if not matched: + return False, left, collected + return True, l, c + + +class Optional(BranchPattern): + + def match(self, left, collected=None): + collected = [] if collected is None else collected + for pattern in self.children: + m, left, collected = pattern.match(left, collected) + return True, left, collected + + +class OptionsShortcut(Optional): + + """Marker/placeholder for [options] shortcut.""" + + +class OneOrMore(BranchPattern): + + def match(self, left, collected=None): + assert len(self.children) == 1 + collected = [] if collected is None else collected + l = left + c = collected + l_ = None + matched = True + times = 0 + while matched: + # could it be that something didn't match but changed l or c? + matched, l, c = self.children[0].match(l, c) + times += 1 if matched else 0 + if l_ == l: + break + l_ = l + if times >= 1: + return True, l, c + return False, left, collected + + +class Either(BranchPattern): + + def match(self, left, collected=None): + collected = [] if collected is None else collected + outcomes = [] + for pattern in self.children: + matched, _, _ = outcome = pattern.match(left, collected) + if matched: + outcomes.append(outcome) + if outcomes: + return min(outcomes, key=lambda outcome: len(outcome[1])) + return False, left, collected + + +class Tokens(list): + + def __init__(self, source, error=DocoptExit): + self += source.split() if hasattr(source, 'split') else source + self.error = error + + @staticmethod + def from_pattern(source): + source = re.sub(r'([\[\]\(\)\|]|\.\.\.)', r' \1 ', source) + source = [s for s in re.split('\s+|(\S*<.*?>)', source) if s] + return Tokens(source, error=DocoptLanguageError) + + def move(self): + return self.pop(0) if len(self) else None + + def current(self): + return self[0] if len(self) else None + + +def parse_long(tokens, options): + """long ::= '--' chars [ ( ' ' | '=' ) chars ] ;""" + long, eq, value = tokens.move().partition('=') + assert long.startswith('--') + value = None if eq == value == '' else value + similar = [o for o in options if o.long == long] + if tokens.error is DocoptExit and similar == []: # if no exact match + similar = [o for o in options if o.long and o.long.startswith(long)] + if len(similar) > 1: # might be simply specified ambiguously 2+ times? + raise tokens.error('%s is not a unique prefix: %s?' % + (long, ', '.join(o.long for o in similar))) + elif len(similar) < 1: + argcount = 1 if eq == '=' else 0 + o = Option(None, long, argcount) + options.append(o) + if tokens.error is DocoptExit: + o = Option(None, long, argcount, value if argcount else True) + else: + o = Option(similar[0].short, similar[0].long, + similar[0].argcount, similar[0].value) + if o.argcount == 0: + if value is not None: + raise tokens.error('%s must not have an argument' % o.long) + else: + if value is None: + if tokens.current() in [None, '--']: + raise tokens.error('%s requires argument' % o.long) + value = tokens.move() + if tokens.error is DocoptExit: + o.value = value if value is not None else True + return [o] + + +def parse_shorts(tokens, options): + """shorts ::= '-' ( chars )* [ [ ' ' ] chars ] ;""" + token = tokens.move() + assert token.startswith('-') and not token.startswith('--') + left = token.lstrip('-') + parsed = [] + while left != '': + short, left = '-' + left[0], left[1:] + similar = [o for o in options if o.short == short] + if len(similar) > 1: + raise tokens.error('%s is specified ambiguously %d times' % + (short, len(similar))) + elif len(similar) < 1: + o = Option(short, None, 0) + options.append(o) + if tokens.error is DocoptExit: + o = Option(short, None, 0, True) + else: # why copying is necessary here? + o = Option(short, similar[0].long, + similar[0].argcount, similar[0].value) + value = None + if o.argcount != 0: + if left == '': + if tokens.current() in [None, '--']: + raise tokens.error('%s requires argument' % short) + value = tokens.move() + else: + value = left + left = '' + if tokens.error is DocoptExit: + o.value = value if value is not None else True + parsed.append(o) + return parsed + + +def parse_pattern(source, options): + tokens = Tokens.from_pattern(source) + result = parse_expr(tokens, options) + if tokens.current() is not None: + raise tokens.error('unexpected ending: %r' % ' '.join(tokens)) + return Required(*result) + + +def parse_expr(tokens, options): + """expr ::= seq ( '|' seq )* ;""" + seq = parse_seq(tokens, options) + if tokens.current() != '|': + return seq + result = [Required(*seq)] if len(seq) > 1 else seq + while tokens.current() == '|': + tokens.move() + seq = parse_seq(tokens, options) + result += [Required(*seq)] if len(seq) > 1 else seq + return [Either(*result)] if len(result) > 1 else result + + +def parse_seq(tokens, options): + """seq ::= ( atom [ '...' ] )* ;""" + result = [] + while tokens.current() not in [None, ']', ')', '|']: + atom = parse_atom(tokens, options) + if tokens.current() == '...': + atom = [OneOrMore(*atom)] + tokens.move() + result += atom + return result + + +def parse_atom(tokens, options): + """atom ::= '(' expr ')' | '[' expr ']' | 'options' + | long | shorts | argument | command ; + """ + token = tokens.current() + result = [] + if token in '([': + tokens.move() + matching, pattern = {'(': [')', Required], '[': [']', Optional]}[token] + result = pattern(*parse_expr(tokens, options)) + if tokens.move() != matching: + raise tokens.error("unmatched '%s'" % token) + return [result] + elif token == 'options': + tokens.move() + return [OptionsShortcut()] + elif token.startswith('--') and token != '--': + return parse_long(tokens, options) + elif token.startswith('-') and token not in ('-', '--'): + return parse_shorts(tokens, options) + elif token.startswith('<') and token.endswith('>') or token.isupper(): + return [Argument(tokens.move())] + else: + return [Command(tokens.move())] + + +def parse_argv(tokens, options, options_first=False): + """Parse command-line argument vector. + + If options_first: + argv ::= [ long | shorts ]* [ argument ]* [ '--' [ argument ]* ] ; + else: + argv ::= [ long | shorts | argument ]* [ '--' [ argument ]* ] ; + + """ + parsed = [] + while tokens.current() is not None: + if tokens.current() == '--': + return parsed + [Argument(None, v) for v in tokens] + elif tokens.current().startswith('--'): + parsed += parse_long(tokens, options) + elif tokens.current().startswith('-') and tokens.current() != '-': + parsed += parse_shorts(tokens, options) + elif options_first: + return parsed + [Argument(None, v) for v in tokens] + else: + parsed.append(Argument(None, tokens.move())) + return parsed + + +def parse_defaults(doc): + defaults = [] + for s in parse_section('options:', doc): + # FIXME corner case "bla: options: --foo" + _, _, s = s.partition(':') # get rid of "options:" + split = re.split('\n[ \t]*(-\S+?)', '\n' + s)[1:] + split = [s1 + s2 for s1, s2 in zip(split[::2], split[1::2])] + options = [Option.parse(s) for s in split if s.startswith('-')] + defaults += options + return defaults + + +def parse_section(name, source): + pattern = re.compile('^([^\n]*' + name + '[^\n]*\n?(?:[ \t].*?(?:\n|$))*)', + re.IGNORECASE | re.MULTILINE) + return [s.strip() for s in pattern.findall(source)] + + +def formal_usage(section): + _, _, section = section.partition(':') # drop "usage:" + pu = section.split() + return '( ' + ' '.join(') | (' if s == pu[0] else s for s in pu[1:]) + ' )' + + +def extras(help, version, options, doc): + if help and any((o.name in ('-h', '--help')) and o.value for o in options): + print(doc.strip("\n")) + sys.exit() + if version and any(o.name == '--version' and o.value for o in options): + print(version) + sys.exit() + + +class Dict(dict): + def __repr__(self): + return '{%s}' % ',\n '.join('%r: %r' % i for i in sorted(self.items())) + + +def docopt(doc, argv=None, help=True, version=None, options_first=False): + """Parse `argv` based on command-line interface described in `doc`. + + `docopt` creates your command-line interface based on its + description that you pass as `doc`. Such description can contain + --options, , commands, which could be + [optional], (required), (mutually | exclusive) or repeated... + + Parameters + ---------- + doc : str + Description of your command-line interface. + argv : list of str, optional + Argument vector to be parsed. sys.argv[1:] is used if not + provided. + help : bool (default: True) + Set to False to disable automatic help on -h or --help + options. + version : any object + If passed, the object will be printed if --version is in + `argv`. + options_first : bool (default: False) + Set to True to require options precede positional arguments, + i.e. to forbid options and positional arguments intermix. + + Returns + ------- + args : dict + A dictionary, where keys are names of command-line elements + such as e.g. "--verbose" and "", and values are the + parsed values of those elements. + + Example + ------- + >>> from docopt import docopt + >>> doc = ''' + ... Usage: + ... my_program tcp [--timeout=] + ... my_program serial [--baud=] [--timeout=] + ... my_program (-h | --help | --version) + ... + ... Options: + ... -h, --help Show this screen and exit. + ... --baud= Baudrate [default: 9600] + ... ''' + >>> argv = ['tcp', '127.0.0.1', '80', '--timeout', '30'] + >>> docopt(doc, argv) + {'--baud': '9600', + '--help': False, + '--timeout': '30', + '--version': False, + '': '127.0.0.1', + '': '80', + 'serial': False, + 'tcp': True} + + See also + -------- + * For video introduction see http://docopt.org + * Full documentation is available in README.rst as well as online + at https://github.com/docopt/docopt#readme + + """ + argv = sys.argv[1:] if argv is None else argv + + usage_sections = parse_section('usage:', doc) + if len(usage_sections) == 0: + raise DocoptLanguageError('"usage:" (case-insensitive) not found.') + if len(usage_sections) > 1: + raise DocoptLanguageError('More than one "usage:" (case-insensitive).') + DocoptExit.usage = usage_sections[0] + + options = parse_defaults(doc) + pattern = parse_pattern(formal_usage(DocoptExit.usage), options) + # [default] syntax for argument is disabled + #for a in pattern.flat(Argument): + # same_name = [d for d in arguments if d.name == a.name] + # if same_name: + # a.value = same_name[0].value + argv = parse_argv(Tokens(argv), list(options), options_first) + pattern_options = set(pattern.flat(Option)) + for options_shortcut in pattern.flat(OptionsShortcut): + doc_options = parse_defaults(doc) + options_shortcut.children = list(set(doc_options) - pattern_options) + #if any_options: + # options_shortcut.children += [Option(o.short, o.long, o.argcount) + # for o in argv if type(o) is Option] + extras(help, version, argv, doc) + matched, left, collected = pattern.fix().match(argv) + if matched and left == []: # better error message if left? + return Dict((a.name, a.value) for a in (pattern.flat() + collected)) + raise DocoptExit() diff --git a/Submodules/fmt/support/manage.py b/Submodules/fmt/support/manage.py new file mode 100755 index 0000000..3467afb --- /dev/null +++ b/Submodules/fmt/support/manage.py @@ -0,0 +1,218 @@ +#!/usr/bin/env python3 + +"""Manage site and releases. + +Usage: + manage.py release [] + manage.py site + +For the release command $FMT_TOKEN should contain a GitHub personal access token +obtained from https://github.com/settings/tokens. +""" + +from __future__ import print_function +import datetime, docopt, errno, fileinput, json, os +import re, requests, shutil, sys +from contextlib import contextmanager +from subprocess import check_call + + +class Git: + def __init__(self, dir): + self.dir = dir + + def call(self, method, args, **kwargs): + return check_call(['git', method] + list(args), **kwargs) + + def add(self, *args): + return self.call('add', args, cwd=self.dir) + + def checkout(self, *args): + return self.call('checkout', args, cwd=self.dir) + + def clean(self, *args): + return self.call('clean', args, cwd=self.dir) + + def clone(self, *args): + return self.call('clone', list(args) + [self.dir]) + + def commit(self, *args): + return self.call('commit', args, cwd=self.dir) + + def pull(self, *args): + return self.call('pull', args, cwd=self.dir) + + def push(self, *args): + return self.call('push', args, cwd=self.dir) + + def reset(self, *args): + return self.call('reset', args, cwd=self.dir) + + def update(self, *args): + clone = not os.path.exists(self.dir) + if clone: + self.clone(*args) + return clone + + +def clean_checkout(repo, branch): + repo.clean('-f', '-d') + repo.reset('--hard') + repo.checkout(branch) + + +class Runner: + def __init__(self, cwd): + self.cwd = cwd + + def __call__(self, *args, **kwargs): + kwargs['cwd'] = kwargs.get('cwd', self.cwd) + check_call(args, **kwargs) + + +def create_build_env(): + """Create a build environment.""" + class Env: + pass + env = Env() + env.fmt_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) + env.build_dir = 'build' + env.fmt_repo = Git(os.path.join(env.build_dir, 'fmt')) + return env + + +fmt_repo_url = 'git@github.com:fmtlib/fmt' + + +def update_site(env): + env.fmt_repo.update(fmt_repo_url) + + doc_repo = Git(os.path.join(env.build_dir, 'fmt.dev')) + doc_repo.update('git@github.com:fmtlib/fmt.dev') + + version = '11.0.0' + clean_checkout(env.fmt_repo, version) + target_doc_dir = os.path.join(env.fmt_repo.dir, 'doc') + + # Build the docs. + html_dir = os.path.join(env.build_dir, 'html') + if os.path.exists(html_dir): + shutil.rmtree(html_dir) + include_dir = env.fmt_repo.dir + import build + build.build_docs(version, doc_dir=target_doc_dir, + include_dir=include_dir, work_dir=env.build_dir) + shutil.rmtree(os.path.join(html_dir, '.doctrees')) + # Copy docs to the website. + version_doc_dir = os.path.join(doc_repo.dir, version) + try: + shutil.rmtree(version_doc_dir) + except OSError as e: + if e.errno != errno.ENOENT: + raise + shutil.move(html_dir, version_doc_dir) + + +def release(args): + env = create_build_env() + fmt_repo = env.fmt_repo + + branch = args.get('') + if branch is None: + branch = 'master' + if not fmt_repo.update('-b', branch, fmt_repo_url): + clean_checkout(fmt_repo, branch) + + # Update the date in the changelog and extract the version and the first + # section content. + changelog = 'ChangeLog.md' + changelog_path = os.path.join(fmt_repo.dir, changelog) + is_first_section = True + first_section = [] + for i, line in enumerate(fileinput.input(changelog_path, inplace=True)): + if i == 0: + version = re.match(r'# (.*) - TBD', line).group(1) + line = '# {} - {}\n'.format( + version, datetime.date.today().isoformat()) + elif not is_first_section: + pass + elif line.startswith('#'): + is_first_section = False + else: + first_section.append(line) + sys.stdout.write(line) + if first_section[0] == '\n': + first_section.pop(0) + + ns_version = None + base_h_path = os.path.join(fmt_repo.dir, 'include', 'fmt', 'base.h') + for line in fileinput.input(base_h_path): + m = re.match(r'\s*inline namespace v(.*) .*', line) + if m: + ns_version = m.group(1) + break + major_version = version.split('.')[0] + if not ns_version or ns_version != major_version: + raise Exception(f'Version mismatch {ns_version} != {major_version}') + + # Workaround GitHub-flavored Markdown treating newlines as
. + changes = '' + code_block = False + stripped = False + for line in first_section: + if re.match(r'^\s*```', line): + code_block = not code_block + changes += line + stripped = False + continue + if code_block: + changes += line + continue + if line == '\n' or re.match(r'^\s*\|.*', line): + if stripped: + changes += '\n' + stripped = False + changes += line + continue + if stripped: + line = ' ' + line.lstrip() + changes += line.rstrip() + stripped = True + + fmt_repo.checkout('-B', 'release') + fmt_repo.add(changelog) + fmt_repo.commit('-m', 'Update version') + + # Build the docs and package. + run = Runner(fmt_repo.dir) + run('cmake', '.') + run('make', 'doc', 'package_source') + + # Create a release on GitHub. + fmt_repo.push('origin', 'release') + auth_headers = {'Authorization': 'token ' + os.getenv('FMT_TOKEN')} + r = requests.post('https://api.github.com/repos/fmtlib/fmt/releases', + headers=auth_headers, + data=json.dumps({'tag_name': version, + 'target_commitish': 'release', + 'body': changes, 'draft': True})) + if r.status_code != 201: + raise Exception('Failed to create a release ' + str(r)) + id = r.json()['id'] + uploads_url = 'https://uploads.github.com/repos/fmtlib/fmt/releases' + package = 'fmt-{}.zip'.format(version) + r = requests.post( + '{}/{}/assets?name={}'.format(uploads_url, id, package), + headers={'Content-Type': 'application/zip'} | auth_headers, + data=open('build/fmt/' + package, 'rb')) + if r.status_code != 201: + raise Exception('Failed to upload an asset ' + str(r)) + + update_site(env) + +if __name__ == '__main__': + args = docopt.docopt(__doc__) + if args.get('release'): + release(args) + elif args.get('site'): + update_site(create_build_env()) diff --git a/Submodules/fmt/support/mkdocs b/Submodules/fmt/support/mkdocs new file mode 100755 index 0000000..6901918 --- /dev/null +++ b/Submodules/fmt/support/mkdocs @@ -0,0 +1,44 @@ +#!/usr/bin/env python3 +# A script to invoke mkdocs with the correct environment. +# Additionally supports deploying via mike: +# ./mkdocs deploy [mike-deploy-options] + +import errno, os, shutil, sys +from subprocess import call + +support_dir = os.path.dirname(os.path.normpath(__file__)) +build_dir = os.path.join(os.path.dirname(support_dir), 'build') + +# Set PYTHONPATH for the mkdocstrings handler. +env = os.environ.copy() +path = env.get('PYTHONPATH') +env['PYTHONPATH'] = \ + (path + ':' if path else '') + os.path.join(support_dir, 'python') + +config_path = os.path.join(support_dir, 'mkdocs.yml') +args = sys.argv[1:] +if len(args) > 0: + command = args[0] + if command == 'deploy': + git_url = 'https://github.com/' if 'CI' in os.environ else 'git@github.com:' + site_repo = git_url + 'fmtlib/fmt.dev.git' + + site_dir = os. path.join(build_dir, 'fmt.dev') + try: + shutil.rmtree(site_dir) + except OSError as e: + if e.errno == errno.ENOENT: + pass + ret = call(['git', 'clone', '--depth=1', site_repo, site_dir]) + if ret != 0: + sys.exit(ret) + + # Copy the config to the build dir because the site is built relative to it. + config_build_path = os.path.join(build_dir, 'mkdocs.yml') + shutil.copyfile(config_path, config_build_path) + + sys.exit(call(['mike'] + args + ['--config-file', config_build_path, + '--branch', 'master'], cwd=site_dir, env=env)) + elif not command.startswith('-'): + args += ['-f', config_path] +sys.exit(call(['mkdocs'] + args, env=env)) diff --git a/Submodules/fmt/support/mkdocs.yml b/Submodules/fmt/support/mkdocs.yml new file mode 100644 index 0000000..17034cd --- /dev/null +++ b/Submodules/fmt/support/mkdocs.yml @@ -0,0 +1,48 @@ +site_name: '{fmt}' + +docs_dir: ../doc + +repo_url: https://github.com/fmtlib/fmt + +theme: + name: material + features: + - navigation.tabs + - navigation.top + - toc.integrate + +extra_javascript: + - https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.7.2/highlight.min.js + - fmt.js + +extra_css: + - https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.7.2/styles/default.min.css + - fmt.css + +markdown_extensions: + - pymdownx.highlight: + # Use JavaScript syntax highlighter instead of Pygments because it + # automatically applies to code blocks extracted through Doxygen. + use_pygments: false + anchor_linenums: true + line_spans: __span + pygments_lang_class: true + - pymdownx.inlinehilite + - pymdownx.snippets + +plugins: + - search + - mkdocstrings: + default_handler: cxx +nav: + - Home: index.md + - Get Started: get-started.md + - API: api.md + - Syntax: syntax.md + +exclude_docs: ChangeLog-old.md + +extra: + version: + provider: mike + generator: false diff --git a/Submodules/fmt/support/printable.py b/Submodules/fmt/support/printable.py new file mode 100755 index 0000000..8fa86b3 --- /dev/null +++ b/Submodules/fmt/support/printable.py @@ -0,0 +1,201 @@ +#!/usr/bin/env python3 + +# This script is based on +# https://github.com/rust-lang/rust/blob/master/library/core/src/unicode/printable.py +# distributed under https://github.com/rust-lang/rust/blob/master/LICENSE-MIT. + +# This script uses the following Unicode tables: +# - UnicodeData.txt + + +from collections import namedtuple +import csv +import os +import subprocess + +NUM_CODEPOINTS=0x110000 + +def to_ranges(iter): + current = None + for i in iter: + if current is None or i != current[1] or i in (0x10000, 0x20000): + if current is not None: + yield tuple(current) + current = [i, i + 1] + else: + current[1] += 1 + if current is not None: + yield tuple(current) + +def get_escaped(codepoints): + for c in codepoints: + if (c.class_ or "Cn") in "Cc Cf Cs Co Cn Zl Zp Zs".split() and c.value != ord(' '): + yield c.value + +def get_file(f): + try: + return open(os.path.basename(f)) + except FileNotFoundError: + subprocess.run(["curl", "-O", f], check=True) + return open(os.path.basename(f)) + +Codepoint = namedtuple('Codepoint', 'value class_') + +def get_codepoints(f): + r = csv.reader(f, delimiter=";") + prev_codepoint = 0 + class_first = None + for row in r: + codepoint = int(row[0], 16) + name = row[1] + class_ = row[2] + + if class_first is not None: + if not name.endswith("Last>"): + raise ValueError("Missing Last after First") + + for c in range(prev_codepoint + 1, codepoint): + yield Codepoint(c, class_first) + + class_first = None + if name.endswith("First>"): + class_first = class_ + + yield Codepoint(codepoint, class_) + prev_codepoint = codepoint + + if class_first is not None: + raise ValueError("Missing Last after First") + + for c in range(prev_codepoint + 1, NUM_CODEPOINTS): + yield Codepoint(c, None) + +def compress_singletons(singletons): + uppers = [] # (upper, # items in lowers) + lowers = [] + + for i in singletons: + upper = i >> 8 + lower = i & 0xff + if len(uppers) == 0 or uppers[-1][0] != upper: + uppers.append((upper, 1)) + else: + upper, count = uppers[-1] + uppers[-1] = upper, count + 1 + lowers.append(lower) + + return uppers, lowers + +def compress_normal(normal): + # lengths 0x00..0x7f are encoded as 00, 01, ..., 7e, 7f + # lengths 0x80..0x7fff are encoded as 80 80, 80 81, ..., ff fe, ff ff + compressed = [] # [truelen, (truelenaux), falselen, (falselenaux)] + + prev_start = 0 + for start, count in normal: + truelen = start - prev_start + falselen = count + prev_start = start + count + + assert truelen < 0x8000 and falselen < 0x8000 + entry = [] + if truelen > 0x7f: + entry.append(0x80 | (truelen >> 8)) + entry.append(truelen & 0xff) + else: + entry.append(truelen & 0x7f) + if falselen > 0x7f: + entry.append(0x80 | (falselen >> 8)) + entry.append(falselen & 0xff) + else: + entry.append(falselen & 0x7f) + + compressed.append(entry) + + return compressed + +def print_singletons(uppers, lowers, uppersname, lowersname): + print(" static constexpr singleton {}[] = {{".format(uppersname)) + for u, c in uppers: + print(" {{{:#04x}, {}}},".format(u, c)) + print(" };") + print(" static constexpr unsigned char {}[] = {{".format(lowersname)) + for i in range(0, len(lowers), 8): + print(" {}".format(" ".join("{:#04x},".format(l) for l in lowers[i:i+8]))) + print(" };") + +def print_normal(normal, normalname): + print(" static constexpr unsigned char {}[] = {{".format(normalname)) + for v in normal: + print(" {}".format(" ".join("{:#04x},".format(i) for i in v))) + print(" };") + +def main(): + file = get_file("https://www.unicode.org/Public/UNIDATA/UnicodeData.txt") + + codepoints = get_codepoints(file) + + CUTOFF=0x10000 + singletons0 = [] + singletons1 = [] + normal0 = [] + normal1 = [] + extra = [] + + for a, b in to_ranges(get_escaped(codepoints)): + if a > 2 * CUTOFF: + extra.append((a, b - a)) + elif a == b - 1: + if a & CUTOFF: + singletons1.append(a & ~CUTOFF) + else: + singletons0.append(a) + elif a == b - 2: + if a & CUTOFF: + singletons1.append(a & ~CUTOFF) + singletons1.append((a + 1) & ~CUTOFF) + else: + singletons0.append(a) + singletons0.append(a + 1) + else: + if a >= 2 * CUTOFF: + extra.append((a, b - a)) + elif a & CUTOFF: + normal1.append((a & ~CUTOFF, b - a)) + else: + normal0.append((a, b - a)) + + singletons0u, singletons0l = compress_singletons(singletons0) + singletons1u, singletons1l = compress_singletons(singletons1) + normal0 = compress_normal(normal0) + normal1 = compress_normal(normal1) + + print("""\ +FMT_FUNC auto is_printable(uint32_t cp) -> bool {\ +""") + print_singletons(singletons0u, singletons0l, 'singletons0', 'singletons0_lower') + print_singletons(singletons1u, singletons1l, 'singletons1', 'singletons1_lower') + print_normal(normal0, 'normal0') + print_normal(normal1, 'normal1') + print("""\ + auto lower = static_cast(cp); + if (cp < 0x10000) { + return is_printable(lower, singletons0, + sizeof(singletons0) / sizeof(*singletons0), + singletons0_lower, normal0, sizeof(normal0)); + } + if (cp < 0x20000) { + return is_printable(lower, singletons1, + sizeof(singletons1) / sizeof(*singletons1), + singletons1_lower, normal1, sizeof(normal1)); + }\ +""") + for a, b in extra: + print(" if (0x{:x} <= cp && cp < 0x{:x}) return false;".format(a, a + b)) + print("""\ + return cp < 0x{:x}; +}}\ +""".format(NUM_CODEPOINTS)) + +if __name__ == '__main__': + main() diff --git a/Submodules/fmt/support/python/mkdocstrings_handlers/cxx/__init__.py b/Submodules/fmt/support/python/mkdocstrings_handlers/cxx/__init__.py new file mode 100644 index 0000000..4ade52a --- /dev/null +++ b/Submodules/fmt/support/python/mkdocstrings_handlers/cxx/__init__.py @@ -0,0 +1,317 @@ +# A basic mkdocstrings handler for {fmt}. +# Copyright (c) 2012 - present, Victor Zverovich + +import os +from pathlib import Path +from typing import Any, List, Mapping, Optional +from subprocess import CalledProcessError, PIPE, Popen, STDOUT +import xml.etree.ElementTree as et + +from mkdocstrings.handlers.base import BaseHandler + +class Definition: + '''A definition extracted by Doxygen.''' + def __init__(self, name: str, kind: Optional[str] = None, + node: Optional[et.Element] = None, + is_member: bool = False): + self.name = name + self.kind = kind if kind is not None else node.get('kind') + self.id = name if not is_member else None + self.params = None + self.members = None + +# A map from Doxygen to HTML tags. +tag_map = { + 'bold': 'b', + 'emphasis': 'em', + 'computeroutput': 'code', + 'para': 'p', + 'programlisting': 'pre', + 'verbatim': 'pre' +} + +# A map from Doxygen tags to text. +tag_text_map = { + 'codeline': '', + 'highlight': '', + 'sp': ' ' +} + +def escape_html(s: str) -> str: + return s.replace("<", "<") + +def doxyxml2html(nodes: List[et.Element]): + out = '' + for n in nodes: + tag = tag_map.get(n.tag) + if not tag: + out += tag_text_map[n.tag] + out += '<' + tag + '>' if tag else '' + out += '' if tag == 'pre' else '' + if n.text: + out += escape_html(n.text) + out += doxyxml2html(n) + out += '' if tag == 'pre' else '' + out += '' if tag else '' + if n.tail: + out += n.tail + return out + +def convert_template_params(node: et.Element) -> Optional[List[Definition]]: + templateparamlist = node.find('templateparamlist') + if templateparamlist is None: + return None + params = [] + for param_node in templateparamlist.findall('param'): + name = param_node.find('declname') + param = Definition(name.text if name is not None else '', 'param') + param.type = param_node.find('type').text + params.append(param) + return params + +def get_description(node: et.Element) -> List[et.Element]: + return node.findall('briefdescription/para') + \ + node.findall('detaileddescription/para') + +def normalize_type(type: str) -> str: + type = type.replace('< ', '<').replace(' >', '>') + return type.replace(' &', '&').replace(' *', '*') + +def convert_type(type: et.Element) -> str: + if type is None: + return None + result = type.text if type.text else '' + for ref in type: + result += ref.text + if ref.tail: + result += ref.tail + result += type.tail.strip() + return normalize_type(result) + +def convert_params(func: et.Element) -> Definition: + params = [] + for p in func.findall('param'): + d = Definition(p.find('declname').text, 'param') + d.type = convert_type(p.find('type')) + params.append(d) + return params + +def convert_return_type(d: Definition, node: et.Element) -> None: + d.trailing_return_type = None + if d.type == 'auto' or d.type == 'constexpr auto': + parts = node.find('argsstring').text.split(' -> ') + if len(parts) > 1: + d.trailing_return_type = normalize_type(parts[1]) + +def render_param(param: Definition) -> str: + return param.type + (f' {param.name}' if len(param.name) > 0 else '') + +def render_decl(d: Definition) -> None: + text = '' + if d.id is not None: + text += f'\n' + text += '

'
+
+  text += '
'
+  if d.template_params is not None:
+    text += 'template <'
+    text += ', '.join([render_param(p) for p in d.template_params])
+    text += '>\n'
+  text += '
'
+
+  text += '
'
+  end = ';'
+  if d.kind == 'function' or d.kind == 'variable':
+    text += d.type + ' ' if len(d.type) > 0 else ''
+  elif d.kind == 'typedef':
+    text += 'using '
+  elif d.kind == 'define':
+    end = ''
+  else:
+    text += d.kind + ' '
+  text += d.name
+
+  if d.params is not None:
+    params = ', '.join([
+      (p.type + ' ' if p.type else '') + p.name for p in d.params])
+    text += '(' + escape_html(params) + ')'
+    if d.trailing_return_type:
+      text += ' -⁠> ' + escape_html(d.trailing_return_type)
+  elif d.kind == 'typedef':
+    text += ' = ' + escape_html(d.type)
+
+  text += end
+  text += '
'
+  text += '
\n' + if d.id is not None: + text += f'\n' + return text + +class CxxHandler(BaseHandler): + def __init__(self, **kwargs: Any) -> None: + super().__init__(handler='cxx', **kwargs) + + headers = [ + 'args.h', 'base.h', 'chrono.h', 'color.h', 'compile.h', 'format.h', + 'os.h', 'ostream.h', 'printf.h', 'ranges.h', 'std.h', 'xchar.h' + ] + + # Run doxygen. + cmd = ['doxygen', '-'] + support_dir = Path(__file__).parents[3] + top_dir = os.path.dirname(support_dir) + include_dir = os.path.join(top_dir, 'include', 'fmt') + self._ns2doxyxml = {} + build_dir = os.path.join(top_dir, 'build') + os.makedirs(build_dir, exist_ok=True) + self._doxyxml_dir = os.path.join(build_dir, 'doxyxml') + p = Popen(cmd, stdin=PIPE, stdout=PIPE, stderr=STDOUT) + _, _ = p.communicate(input=r''' + PROJECT_NAME = fmt + GENERATE_XML = YES + GENERATE_LATEX = NO + GENERATE_HTML = NO + INPUT = {0} + XML_OUTPUT = {1} + QUIET = YES + AUTOLINK_SUPPORT = NO + MACRO_EXPANSION = YES + PREDEFINED = _WIN32=1 \ + __linux__=1 \ + FMT_ENABLE_IF(...)= \ + FMT_USE_USER_DEFINED_LITERALS=1 \ + FMT_USE_ALIAS_TEMPLATES=1 \ + FMT_USE_NONTYPE_TEMPLATE_ARGS=1 \ + FMT_API= \ + "FMT_BEGIN_NAMESPACE=namespace fmt {{" \ + "FMT_END_NAMESPACE=}}" \ + "FMT_DOC=1" + '''.format( + ' '.join([os.path.join(include_dir, h) for h in headers]), + self._doxyxml_dir).encode('utf-8')) + if p.returncode != 0: + raise CalledProcessError(p.returncode, cmd) + + # Merge all file-level XMLs into one to simplify search. + self._file_doxyxml = None + for h in headers: + filename = h.replace(".h", "_8h.xml") + with open(os.path.join(self._doxyxml_dir, filename)) as f: + doxyxml = et.parse(f) + if self._file_doxyxml is None: + self._file_doxyxml = doxyxml + continue + root = self._file_doxyxml.getroot() + for node in doxyxml.getroot(): + root.append(node) + + def collect_compound(self, identifier: str, + cls: List[et.Element]) -> Definition: + '''Collect a compound definition such as a struct.''' + path = os.path.join(self._doxyxml_dir, cls[0].get('refid') + '.xml') + with open(path) as f: + xml = et.parse(f) + node = xml.find('compounddef') + d = Definition(identifier, node=node) + d.template_params = convert_template_params(node) + d.desc = get_description(node) + d.members = [] + for m in node.findall('sectiondef[@kind="public-attrib"]/memberdef') + \ + node.findall('sectiondef[@kind="public-func"]/memberdef'): + name = m.find('name').text + # Doxygen incorrectly classifies members of private unnamed unions as + # public members of the containing class. + if name.endswith('_'): + continue + desc = get_description(m) + if len(desc) == 0: + continue + kind = m.get('kind') + member = Definition(name if name else '', kind=kind, is_member=True) + type = m.find('type').text + member.type = type if type else '' + if kind == 'function': + member.params = convert_params(m) + convert_return_type(member, m) + member.template_params = None + member.desc = desc + d.members.append(member) + return d + + def collect(self, identifier: str, config: Mapping[str, Any]) -> Definition: + qual_name = 'fmt::' + identifier + + param_str = None + paren = qual_name.find('(') + if paren > 0: + qual_name, param_str = qual_name[:paren], qual_name[paren + 1:-1] + + colons = qual_name.rfind('::') + namespace, name = qual_name[:colons], qual_name[colons + 2:] + + # Load XML. + doxyxml = self._ns2doxyxml.get(namespace) + if doxyxml is None: + path = f'namespace{namespace.replace("::", "_1_1")}.xml' + with open(os.path.join(self._doxyxml_dir, path)) as f: + doxyxml = et.parse(f) + self._ns2doxyxml[namespace] = doxyxml + + nodes = doxyxml.findall( + f"compounddef/sectiondef/memberdef/name[.='{name}']/..") + if len(nodes) == 0: + nodes = self._file_doxyxml.findall( + f"compounddef/sectiondef/memberdef/name[.='{name}']/..") + candidates = [] + for node in nodes: + # Process a function or a typedef. + params = None + d = Definition(name, node=node) + if d.kind == 'function': + params = convert_params(node) + node_param_str = ', '.join([p.type for p in params]) + if param_str and param_str != node_param_str: + candidates.append(f'{name}({node_param_str})') + continue + elif d.kind == 'define': + params = [] + for p in node.findall('param'): + param = Definition(p.find('defname').text, kind='param') + param.type = None + params.append(param) + d.type = convert_type(node.find('type')) + d.template_params = convert_template_params(node) + d.params = params + convert_return_type(d, node) + d.desc = get_description(node) + return d + + cls = doxyxml.findall(f"compounddef/innerclass[.='{qual_name}']") + if not cls: + raise Exception(f'Cannot find {identifier}. Candidates: {candidates}') + return self.collect_compound(identifier, cls) + + def render(self, d: Definition, config: dict) -> str: + if d.id is not None: + self.do_heading('', 0, id=d.id) + text = '
\n' + text += render_decl(d) + text += '
\n' + text += doxyxml2html(d.desc) + if d.members is not None: + for m in d.members: + text += self.render(m, config) + text += '
\n' + text += '
\n' + return text + +def get_handler(theme: str, custom_templates: Optional[str] = None, + **config: Any) -> CxxHandler: + '''Return an instance of `CxxHandler`. + + Arguments: + theme: The theme to use when rendering contents. + custom_templates: Directory containing custom templates. + **config: Configuration passed to the handler. + ''' + return CxxHandler(theme=theme, custom_templates=custom_templates) diff --git a/Submodules/fmt/support/python/mkdocstrings_handlers/cxx/templates/README b/Submodules/fmt/support/python/mkdocstrings_handlers/cxx/templates/README new file mode 100644 index 0000000..7da18db --- /dev/null +++ b/Submodules/fmt/support/python/mkdocstrings_handlers/cxx/templates/README @@ -0,0 +1 @@ +mkdocsstrings requires a handler to have a templates directory. diff --git a/Submodules/fmt/test/CMakeLists.txt b/Submodules/fmt/test/CMakeLists.txt new file mode 100644 index 0000000..a14dfc2 --- /dev/null +++ b/Submodules/fmt/test/CMakeLists.txt @@ -0,0 +1,272 @@ +add_subdirectory(gtest) + +include(CheckSymbolExists) + +set(TEST_MAIN_SRC test-main.cc gtest-extra.cc gtest-extra.h util.cc) +add_library(test-main STATIC ${TEST_MAIN_SRC}) +target_include_directories(test-main PUBLIC + $) +target_link_libraries(test-main gtest fmt) + +function(add_fmt_executable name) + add_executable(${name} ${ARGN}) + # (Wstringop-overflow) - [meta-bug] bogus/missing -Wstringop-overflow warnings + # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88443 + # Bogus -Wstringop-overflow warning + # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100395 + # [10 Regression] spurious -Wstringop-overflow writing to a trailing array plus offset + # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95353 + if (CMAKE_CXX_COMPILER_ID MATCHES "GNU" AND + NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0) + target_compile_options(${name} PRIVATE -Wno-stringop-overflow) + # The linker flag is needed for LTO. + target_link_libraries(${name} -Wno-stringop-overflow) + endif () +endfunction() + +# Adds a test. +# Usage: add_fmt_test(name srcs...) +function(add_fmt_test name) + cmake_parse_arguments(ADD_FMT_TEST "HEADER_ONLY;MODULE" "" "" ${ARGN}) + + set(sources ${name}.cc ${ADD_FMT_TEST_UNPARSED_ARGUMENTS}) + if (ADD_FMT_TEST_HEADER_ONLY) + set(sources ${sources} ${TEST_MAIN_SRC} ../src/os.cc) + set(libs gtest fmt-header-only) + if (CMAKE_CXX_COMPILER_ID MATCHES "Clang") + set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wno-weak-vtables) + endif () + elseif (ADD_FMT_TEST_MODULE) + set(libs test-main test-module) + set_source_files_properties(${name}.cc PROPERTIES OBJECT_DEPENDS test-module) + else () + set(libs test-main fmt) + endif () + add_fmt_executable(${name} ${sources}) + target_link_libraries(${name} ${libs}) + + if (ADD_FMT_TEST_HEADER_ONLY AND NOT FMT_UNICODE) + target_compile_definitions(${name} PUBLIC FMT_UNICODE=0) + endif () + + # Define if certain C++ features can be used. + if (FMT_PEDANTIC) + target_compile_options(${name} PRIVATE ${PEDANTIC_COMPILE_FLAGS}) + endif () + if (FMT_WERROR) + target_compile_options(${name} PRIVATE ${WERROR_FLAG}) + endif () + add_test(NAME ${name} COMMAND ${name}) +endfunction() + +if (FMT_MODULE) + return () +endif () + +add_fmt_test(args-test) +add_fmt_test(base-test) +add_fmt_test(assert-test) +add_fmt_test(chrono-test) +add_fmt_test(color-test) +add_fmt_test(gtest-extra-test) +add_fmt_test(format-test mock-allocator.h) +if (MSVC) + target_compile_options(format-test PRIVATE /bigobj) +endif () +if (NOT (MSVC AND BUILD_SHARED_LIBS)) + add_fmt_test(format-impl-test HEADER_ONLY header-only-test.cc) +endif () +add_fmt_test(ostream-test) +add_fmt_test(compile-test) +add_fmt_test(compile-fp-test HEADER_ONLY) +if (MSVC) + # Without this option, MSVC returns 199711L for the __cplusplus macro. + target_compile_options(compile-fp-test PRIVATE /Zc:__cplusplus) +endif() +add_fmt_test(printf-test) +add_fmt_test(ranges-test ranges-odr-test.cc) + +add_fmt_test(scan-test HEADER_ONLY) +check_symbol_exists(strptime "time.h" HAVE_STRPTIME) +if (HAVE_STRPTIME) + target_compile_definitions(scan-test PRIVATE FMT_HAVE_STRPTIME) +endif () + +add_fmt_test(std-test) +try_compile(compile_result_unused + ${CMAKE_CURRENT_BINARY_DIR} + SOURCES ${CMAKE_CURRENT_LIST_DIR}/detect-stdfs.cc + OUTPUT_VARIABLE RAWOUTPUT) +string(REGEX REPLACE ".*libfound \"([^\"]*)\".*" "\\1" STDLIBFS "${RAWOUTPUT}") +if (STDLIBFS) + target_link_libraries(std-test ${STDLIBFS}) +endif () +add_fmt_test(unicode-test HEADER_ONLY) +if (MSVC) + target_compile_options(unicode-test PRIVATE /utf-8) +endif () +add_fmt_test(xchar-test) +add_fmt_test(enforce-checks-test) +target_compile_definitions(enforce-checks-test PRIVATE + -DFMT_ENFORCE_COMPILE_STRING) + +add_executable(perf-sanity perf-sanity.cc) +target_link_libraries(perf-sanity fmt::fmt) + +if (FMT_MODULE) + # The tests need {fmt} to be compiled as traditional library + # because of visibility of implementation details. + # If module support is present the module tests require a + # test-only module to be built from {fmt} + add_library(test-module OBJECT ${CMAKE_SOURCE_DIR}/src/fmt.cc) + target_compile_features(test-module PUBLIC cxx_std_11) + target_include_directories(test-module PUBLIC + $) + enable_module(test-module) + + add_fmt_test(module-test MODULE test-main.cc) + if (MSVC) + target_compile_options(test-module PRIVATE /utf-8 /Zc:__cplusplus + /Zc:externConstexpr /Zc:inline) + target_compile_options(module-test PRIVATE /utf-8 /Zc:__cplusplus + /Zc:externConstexpr /Zc:inline) + endif () +endif () + +if (NOT DEFINED MSVC_STATIC_RUNTIME AND MSVC) + foreach (flag_var + CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE + CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO) + if (${flag_var} MATCHES "^(/|-)(MT|MTd)") + set(MSVC_STATIC_RUNTIME ON) + break() + endif() + endforeach() +endif() + +if (NOT MSVC_STATIC_RUNTIME) + add_fmt_executable(posix-mock-test + posix-mock-test.cc ../src/format.cc ${TEST_MAIN_SRC}) + target_include_directories( + posix-mock-test PRIVATE ${PROJECT_SOURCE_DIR}/include) + target_link_libraries(posix-mock-test gtest) + if (FMT_PEDANTIC) + target_compile_options(posix-mock-test PRIVATE ${PEDANTIC_COMPILE_FLAGS}) + endif () + if (MSVC) + target_compile_options(posix-mock-test PRIVATE /utf-8) + endif () + add_test(NAME posix-mock-test COMMAND posix-mock-test) + add_fmt_test(os-test) +endif () + +message(STATUS "FMT_PEDANTIC: ${FMT_PEDANTIC}") + +if (FMT_PEDANTIC) + # Test that the library can be compiled with exceptions disabled. + # -fno-exception is broken in icc: https://github.com/fmtlib/fmt/issues/822. + if (NOT CMAKE_CXX_COMPILER_ID STREQUAL "Intel") + check_cxx_compiler_flag(-fno-exceptions HAVE_FNO_EXCEPTIONS_FLAG) + endif () + if (HAVE_FNO_EXCEPTIONS_FLAG) + add_library(noexception-test ../src/format.cc noexception-test.cc) + target_include_directories( + noexception-test PRIVATE ${PROJECT_SOURCE_DIR}/include) + target_compile_options(noexception-test PRIVATE -fno-exceptions) + target_compile_options(noexception-test PRIVATE ${PEDANTIC_COMPILE_FLAGS}) + endif () + + # Test that the library compiles without locale. + add_library(nolocale-test ../src/format.cc) + target_include_directories( + nolocale-test PRIVATE ${PROJECT_SOURCE_DIR}/include) + target_compile_definitions( + nolocale-test PRIVATE FMT_STATIC_THOUSANDS_SEPARATOR=1) +endif () + +# These tests are disabled on Windows because they take too long. +# They are disabled on GCC < 4.9 because it can not parse UDLs without +# a space after `operator""` but that is an incorrect syntax for any more +# modern compiler. +if (FMT_PEDANTIC AND NOT WIN32 AND NOT ( + CMAKE_CXX_COMPILER_ID MATCHES "GNU" AND + CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.9)) + # Test if incorrect API usages produce compilation error. + add_test(compile-error-test ${CMAKE_CTEST_COMMAND} + --build-and-test + "${CMAKE_CURRENT_SOURCE_DIR}/compile-error-test" + "${CMAKE_CURRENT_BINARY_DIR}/compile-error-test" + --build-generator ${CMAKE_GENERATOR} + --build-makeprogram ${CMAKE_MAKE_PROGRAM} + --build-options + "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}" + "-DCMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}" + "-DCMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD}" + "-DCXX_STANDARD_FLAG=${CXX_STANDARD_FLAG}" + "-DFMT_DIR=${CMAKE_SOURCE_DIR}") + + # Test if the targets are found from the build directory. + add_test(find-package-test ${CMAKE_CTEST_COMMAND} + -C ${CMAKE_BUILD_TYPE} + --build-and-test + "${CMAKE_CURRENT_SOURCE_DIR}/find-package-test" + "${CMAKE_CURRENT_BINARY_DIR}/find-package-test" + --build-generator ${CMAKE_GENERATOR} + --build-makeprogram ${CMAKE_MAKE_PROGRAM} + --build-options + "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}" + "-DCMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}" + "-DCMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD}" + "-DFMT_DIR=${PROJECT_BINARY_DIR}" + "-DPEDANTIC_COMPILE_FLAGS=${PEDANTIC_COMPILE_FLAGS}" + "-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}") + + # Test if the targets are found when add_subdirectory is used. + add_test(add-subdirectory-test ${CMAKE_CTEST_COMMAND} + -C ${CMAKE_BUILD_TYPE} + --build-and-test + "${CMAKE_CURRENT_SOURCE_DIR}/add-subdirectory-test" + "${CMAKE_CURRENT_BINARY_DIR}/add-subdirectory-test" + --build-generator ${CMAKE_GENERATOR} + --build-makeprogram ${CMAKE_MAKE_PROGRAM} + --build-options + "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}" + "-DCMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD}" + "-DPEDANTIC_COMPILE_FLAGS=${PEDANTIC_COMPILE_FLAGS}" + "-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}") +endif () + +# This test is disabled on Windows because it is POSIX-specific. +if (FMT_PEDANTIC AND NOT WIN32) + add_test(static-export-test ${CMAKE_CTEST_COMMAND} + -C ${CMAKE_BUILD_TYPE} + --build-and-test + "${CMAKE_CURRENT_SOURCE_DIR}/static-export-test" + "${CMAKE_CURRENT_BINARY_DIR}/static-export-test" + --build-generator ${CMAKE_GENERATOR} + --build-makeprogram ${CMAKE_MAKE_PROGRAM} + --build-options + "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}" + "-DCMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD}" + "-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}") +endif () + +# Activate optional CUDA tests if CUDA is found. For version selection see +# https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#cpp14-language-features +if (FMT_CUDA_TEST) + if (${CMAKE_VERSION} VERSION_LESS 3.15) + find_package(CUDA 9.0) + else () + include(CheckLanguage) + check_language(CUDA) + if (CMAKE_CUDA_COMPILER) + enable_language(CUDA OPTIONAL) + set(CUDA_FOUND TRUE) + endif () + endif () + + if (CUDA_FOUND) + add_subdirectory(cuda-test) + add_test(NAME cuda-test COMMAND fmt-in-cuda-test) + endif () +endif () diff --git a/Submodules/fmt/test/add-subdirectory-test/CMakeLists.txt b/Submodules/fmt/test/add-subdirectory-test/CMakeLists.txt new file mode 100644 index 0000000..362b049 --- /dev/null +++ b/Submodules/fmt/test/add-subdirectory-test/CMakeLists.txt @@ -0,0 +1,17 @@ +cmake_minimum_required(VERSION 3.8...3.25) + +project(fmt-test CXX) + +add_subdirectory(../.. fmt) + +add_executable(library-test main.cc) +target_include_directories(library-test PUBLIC SYSTEM .) +target_compile_options(library-test PRIVATE ${PEDANTIC_COMPILE_FLAGS}) +target_link_libraries(library-test fmt::fmt) + +if (TARGET fmt::fmt-header-only) + add_executable(header-only-test main.cc) + target_include_directories(header-only-test PUBLIC SYSTEM .) + target_compile_options(header-only-test PRIVATE ${PEDANTIC_COMPILE_FLAGS}) + target_link_libraries(header-only-test fmt::fmt-header-only) +endif () diff --git a/Submodules/fmt/test/add-subdirectory-test/main.cc b/Submodules/fmt/test/add-subdirectory-test/main.cc new file mode 100644 index 0000000..1d31cb9 --- /dev/null +++ b/Submodules/fmt/test/add-subdirectory-test/main.cc @@ -0,0 +1,5 @@ +#include "fmt/base.h" + +int main(int argc, char** argv) { + for (int i = 0; i < argc; ++i) fmt::print("{}: {}\n", i, argv[i]); +} diff --git a/Submodules/fmt/test/args-test.cc b/Submodules/fmt/test/args-test.cc new file mode 100644 index 0000000..f99ff74 --- /dev/null +++ b/Submodules/fmt/test/args-test.cc @@ -0,0 +1,188 @@ +// Formatting library for C++ - dynamic argument store tests +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#include "fmt/args.h" + +#include + +#include "gtest/gtest.h" + +TEST(args_test, basic) { + fmt::dynamic_format_arg_store store; + store.push_back(42); + store.push_back("abc1"); + store.push_back(1.5f); + EXPECT_EQ("42 and abc1 and 1.5", fmt::vformat("{} and {} and {}", store)); +} + +TEST(args_test, strings_and_refs) { + // Unfortunately the tests are compiled with old ABI so strings use COW. + fmt::dynamic_format_arg_store store; + char str[] = "1234567890"; + store.push_back(str); + store.push_back(std::cref(str)); + store.push_back(fmt::string_view{str}); + str[0] = 'X'; + + auto result = fmt::vformat("{} and {} and {}", store); + EXPECT_EQ("1234567890 and X234567890 and X234567890", result); +} + +struct custom_type { + int i = 0; +}; + +FMT_BEGIN_NAMESPACE +template <> struct formatter { + auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template + auto format(const custom_type& p, FormatContext& ctx) const + -> decltype(ctx.out()) { + return fmt::format_to(ctx.out(), "cust={}", p.i); + } +}; +FMT_END_NAMESPACE + +TEST(args_test, custom_format) { + fmt::dynamic_format_arg_store store; + auto c = custom_type(); + store.push_back(c); + ++c.i; + store.push_back(c); + ++c.i; + store.push_back(std::cref(c)); + ++c.i; + auto result = fmt::vformat("{} and {} and {}", store); + EXPECT_EQ("cust=0 and cust=1 and cust=3", result); +} + +struct to_stringable { + friend fmt::string_view to_string_view(to_stringable) { return {}; } +}; + +FMT_BEGIN_NAMESPACE +template <> struct formatter { + auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + + auto format(to_stringable, format_context& ctx) const -> decltype(ctx.out()) { + return ctx.out(); + } +}; +FMT_END_NAMESPACE + +TEST(args_test, to_string_and_formatter) { + fmt::dynamic_format_arg_store store; + auto s = to_stringable(); + store.push_back(s); + store.push_back(std::cref(s)); + fmt::vformat("", store); +} + +TEST(args_test, named_int) { + fmt::dynamic_format_arg_store store; + store.push_back(fmt::arg("a1", 42)); + EXPECT_EQ("42", fmt::vformat("{a1}", store)); +} + +TEST(args_test, named_strings) { + fmt::dynamic_format_arg_store store; + char str[] = "1234567890"; + store.push_back(fmt::arg("a1", str)); + store.push_back(fmt::arg("a2", std::cref(str))); + str[0] = 'X'; + EXPECT_EQ("1234567890 and X234567890", fmt::vformat("{a1} and {a2}", store)); +} + +TEST(args_test, named_arg_by_ref) { + fmt::dynamic_format_arg_store store; + char band[] = "Rolling Stones"; + store.push_back(fmt::arg("band", std::cref(band))); + band[9] = 'c'; // Changing band affects the output. + EXPECT_EQ(fmt::vformat("{band}", store), "Rolling Scones"); +} + +TEST(args_test, named_custom_format) { + fmt::dynamic_format_arg_store store; + auto c = custom_type(); + store.push_back(fmt::arg("c1", c)); + ++c.i; + store.push_back(fmt::arg("c2", c)); + ++c.i; + store.push_back(fmt::arg("c_ref", std::cref(c))); + ++c.i; + auto result = fmt::vformat("{c1} and {c2} and {c_ref}", store); + EXPECT_EQ("cust=0 and cust=1 and cust=3", result); +} + +TEST(args_test, clear) { + fmt::dynamic_format_arg_store store; + store.push_back(42); + + auto result = fmt::vformat("{}", store); + EXPECT_EQ("42", result); + + store.push_back(43); + result = fmt::vformat("{} and {}", store); + EXPECT_EQ("42 and 43", result); + + store.clear(); + store.push_back(44); + result = fmt::vformat("{}", store); + EXPECT_EQ("44", result); +} + +TEST(args_test, reserve) { + fmt::dynamic_format_arg_store store; + store.reserve(2, 1); + store.push_back(1.5f); + store.push_back(fmt::arg("a", 42)); + auto result = fmt::vformat("{} and {a}", store); + EXPECT_EQ("1.5 and 42", result); +} + +struct copy_throwable { + copy_throwable() {} + copy_throwable(const copy_throwable&) { throw "deal with it"; } +}; + +FMT_BEGIN_NAMESPACE +template <> struct formatter { + auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + auto format(copy_throwable, format_context& ctx) const + -> decltype(ctx.out()) { + return ctx.out(); + } +}; +FMT_END_NAMESPACE + +TEST(args_test, throw_on_copy) { + fmt::dynamic_format_arg_store store; + store.push_back(std::string("foo")); + try { + store.push_back(copy_throwable()); + } catch (...) { + } + EXPECT_EQ(fmt::vformat("{}", store), "foo"); +} + +TEST(args_test, move_constructor) { + using store_type = fmt::dynamic_format_arg_store; + auto store = std::unique_ptr(new store_type()); + store->push_back(42); + store->push_back(std::string("foo")); + store->push_back(fmt::arg("a1", "foo")); + auto moved_store = std::move(*store); + store.reset(); + EXPECT_EQ(fmt::vformat("{} {} {a1}", moved_store), "42 foo foo"); +} diff --git a/Submodules/fmt/test/assert-test.cc b/Submodules/fmt/test/assert-test.cc new file mode 100644 index 0000000..368fb58 --- /dev/null +++ b/Submodules/fmt/test/assert-test.cc @@ -0,0 +1,31 @@ +// Formatting library for C++ - FMT_ASSERT test +// +// It is a separate test to minimize the number of EXPECT_DEBUG_DEATH checks +// which are slow on some platforms. In other tests FMT_ASSERT is made to throw +// an exception which is much faster and easier to check. +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#include "fmt/base.h" +#include "gtest/gtest.h" + +TEST(assert_test, fail) { +#if GTEST_HAS_DEATH_TEST + EXPECT_DEBUG_DEATH(FMT_ASSERT(false, "don't panic!"), "don't panic!"); +#else + fmt::print("warning: death tests are not supported\n"); +#endif +} + +TEST(assert_test, dangling_else) { + bool test_condition = false; + bool executed_else = false; + if (test_condition) + FMT_ASSERT(true, ""); + else + executed_else = true; + EXPECT_TRUE(executed_else); +} diff --git a/Submodules/fmt/test/base-test.cc b/Submodules/fmt/test/base-test.cc new file mode 100644 index 0000000..7657003 --- /dev/null +++ b/Submodules/fmt/test/base-test.cc @@ -0,0 +1,899 @@ +// Formatting library for C++ - core tests +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +// clang-format off +#include "test-assert.h" +// clang-format on + +#include "fmt/base.h" + +#include // INT_MAX +#include // std::strlen +#include // std::equal_to +#include // std::back_insert_iterator, std::distance +#include // std::numeric_limits +#include // std::string +#include // std::is_same + +#include "gmock/gmock.h" + +using fmt::string_view; +using fmt::detail::buffer; + +using testing::_; +using testing::Invoke; +using testing::Return; + +#ifdef FMT_FORMAT_H_ +# error core-test includes format.h +#endif + +fmt::appender copy(fmt::string_view s, fmt::appender out) { + for (char c : s) *out++ = c; + return out; +} + +TEST(string_view_test, value_type) { + static_assert(std::is_same::value, ""); +} + +TEST(string_view_test, ctor) { + EXPECT_STREQ("abc", fmt::string_view("abc").data()); + EXPECT_EQ(3u, fmt::string_view("abc").size()); + + EXPECT_STREQ("defg", fmt::string_view(std::string("defg")).data()); + EXPECT_EQ(4u, fmt::string_view(std::string("defg")).size()); +} + +TEST(string_view_test, length) { + // Test that string_view::size() returns string length, not buffer size. + char str[100] = "some string"; + EXPECT_EQ(std::strlen(str), string_view(str).size()); + EXPECT_LT(std::strlen(str), sizeof(str)); +} + +// Check string_view's comparison operator. +template