Update struct json (#383)

README.md

@@ -472,6 +472,14 @@ see [Build Website](https://github.com/alibaba/yalantinglibs/blob/main/website/R
 4. Choose one or more reviewers from contributors: (e.g., qicosmos, poor-circle, PikachuHyA).
 5. Get approved and merged.
 
+# Discussion group
+
+DingTalk group
+
+<center>
+<img src="./website/docs/public/img/yalantinglibs_ding_talk_group.png" alt="dingtalk" width="200" height="200" align="bottom" />
+</center>
+
 ## License
 
 yaLanTingLibs is distributed under the Apache License (Version 2.0)

include/ylt/struct_json/json_reader.h

@@ -28,23 +28,23 @@ IGUANA_INLINE void from_json(T &value, It &&it, It &&end,
   iguana::from_json(value, it, end, ec);
 }
 
-template <typename T, iguana::json_view View>
+template <typename T, typename View>
 IGUANA_INLINE void from_json(T &value, const View &view) {
   iguana::from_json(value, view);
 }
 
-template <typename T, iguana::json_view View>
+template <typename T, typename View>
 IGUANA_INLINE void from_json(T &value, const View &view,
                              std::error_code &ec) noexcept {
   iguana::from_json(value, view, ec);
 }
 
-template <typename T, iguana::json_byte Byte>
+template <typename T, typename Byte>
 IGUANA_INLINE void from_json(T &value, const Byte *data, size_t size) {
   iguana::from_json(value, data, size);
 }
 
-template <typename T, iguana::json_byte Byte>
+template <typename T, typename Byte>
 IGUANA_INLINE void from_json(T &value, const Byte *data, size_t size,
                              std::error_code &ec) noexcept {
   iguana::from_json(value, data, size, ec);
@@ -61,6 +61,8 @@ IGUANA_INLINE void from_json_file(T &value, const std::string &filename,
   iguana::from_json_file(value, filename, ec);
 }
 
+using numeric_str = iguana::numeric_str;
+
 // dom parse
 using jvalue = iguana::jvalue;
 using jarray = iguana::jarray;
@@ -76,12 +78,12 @@ inline void parse(jvalue &result, It &&it, It &&end, std::error_code &ec) {
   iguana::parse(result, it, end, ec);
 }
 
-template <typename T, iguana::json_view View>
+template <typename T, typename View>
 inline void parse(T &result, const View &view) {
   iguana::parse(result, view);
 }
 
-template <typename T, iguana::json_view View>
+template <typename T, typename View>
 inline void parse(T &result, const View &view, std::error_code &ec) {
   iguana::parse(result, view, ec);
 }

include/ylt/struct_pack/reflection.hpp

@@ -1895,4 +1895,4 @@ STRUCT_PACK_EXPAND_EACH(,STRUCT_PACK_GET_INDEX_CONST,STRUCT_PACK_MAKE_ARGS(Type,
 template <std::size_t I> \
 friend auto& STRUCT_PACK_GET(Type& c); \
 template <std::size_t I> \
-friend const auto& STRUCT_PACK_GET(const Type& c); \
+friend const auto& STRUCT_PACK_GET(const Type& c);

include/ylt/thirdparty/iguana/define.h

@@ -1,5 +1,12 @@
 #pragma once
 
+#include <array>
+#include <bit>
+#include <string>
+#include <string_view>
+#include <type_traits>
+#include <vector>
+
 #if defined __clang__
 #define IGUANA_INLINE __attribute__((always_inline)) inline
 #define IGUANA__INLINE_LAMBDA __attribute__((always_inline)) constexpr
@@ -10,3 +17,85 @@
 #define IGUANA_INLINE __attribute__((always_inline)) inline
 #define IGUANA__INLINE_LAMBDA constexpr __attribute__((always_inline))
 #endif
+
+#if __has_cpp_attribute(likely) && __has_cpp_attribute(unlikely)
+#define IGUANA_LIKELY [[likely]]
+#define IGUANA_UNLIKELY [[unlikely]]
+#else
+#define IGUANA_LIKELY
+#define IGUANA_UNLIKELY
+#endif
+
+#ifdef _MSC_VER
+
+#if _MSC_VER >= 1920 && _MSVC_LANG >= 202002L
+IGUANA_INLINE int countr_zero(unsigned long long x) {
+  return std::countr_zero(x);
+}
+template <typename T>
+constexpr inline bool contiguous_iterator = std::contiguous_iterator<T>;
+
+#else
+IGUANA_INLINE int countr_zero(unsigned long long x) {
+  // x will never be zero in iguana
+  unsigned long pos;
+  _BitScanForward64(&pos, x);
+  return pos;
+}
+
+namespace std {
+template <typename T>
+using remove_cvref_t =
+    typename remove_cv<typename remove_reference<T>::type>::type;
+}
+template <typename T>
+constexpr inline bool contiguous_iterator =
+    std::is_same_v<std::remove_cvref_t<T>,
+                   typename std::vector<char>::iterator> ||
+    std::is_same_v<std::remove_cvref_t<T>,
+                   typename std::vector<char>::const_iterator> ||
+    std::is_same_v<std::remove_cvref_t<T>, typename std::string::iterator> ||
+    std::is_same_v<std::remove_cvref_t<T>,
+                   typename std::string::const_iterator> ||
+    std::is_same_v<std::remove_cvref_t<T>, char *> ||
+    std::is_same_v<std::remove_cvref_t<T>,
+                   typename std::string_view::iterator> ||
+    std::is_same_v<std::remove_cvref_t<T>,
+                   typename std::string_view::const_iterator>;
+#endif
+
+#else
+
+#if __cplusplus >= 202002L
+IGUANA_INLINE int countr_zero(unsigned long long x) {
+  return std::countr_zero(x);
+}
+template <typename T>
+constexpr inline bool contiguous_iterator = std::contiguous_iterator<T>;
+#else
+IGUANA_INLINE int countr_zero(unsigned long long x) {
+  // x will never be zero in iguana
+  return __builtin_ctzll(x);
+}
+namespace std {
+template <typename T>
+using remove_cvref_t =
+    typename remove_cv<typename remove_reference<T>::type>::type;
+}
+template <typename T>
+constexpr inline bool contiguous_iterator =
+    std::is_same_v<std::remove_cvref_t<T>,
+                   typename std::vector<char>::iterator> ||
+    std::is_same_v<std::remove_cvref_t<T>,
+                   typename std::vector<char>::const_iterator> ||
+    std::is_same_v<std::remove_cvref_t<T>, typename std::string::iterator> ||
+    std::is_same_v<std::remove_cvref_t<T>,
+                   typename std::string::const_iterator> ||
+    std::is_same_v<std::remove_cvref_t<T>, char *> ||
+    std::is_same_v<std::remove_cvref_t<T>,
+                   typename std::string_view::iterator> ||
+    std::is_same_v<std::remove_cvref_t<T>,
+                   typename std::string_view::const_iterator>;
+#endif
+
+#endif

include/ylt/thirdparty/iguana/detail/traits.hpp

@@ -12,7 +12,11 @@
 #include <type_traits>
 #include <unordered_map>
 #include <vector>
+
+#include "iguana/define.h"
+
 namespace iguana {
+
 template <class T>
 struct is_signed_intergral_like
     : std::integral_constant<bool, (std::is_integral<T>::value) &&