fix various compiler warnings

Author: code-disaster

CMakeLists.txt

@@ -6,25 +6,34 @@ if (NOT FIPS_IMPORT)
 endif()
 
 fips_begin_lib(sdlang)
+    fips_vs_warning_level(3)
     fips_files(
         sdlang.c
         sdlang.h
         sdlang.inl
     )
 fips_end_lib()
 
+if (FIPS_MSVC)
+    target_compile_definitions(sdlang PRIVATE _CRT_SECURE_NO_WARNINGS)
+endif()
+
 if (FIPS_GCC)
-    set_target_properties(sdlang PROPERTIES COMPILE_FLAGS "-Wno-implicit-fallthrough")
+    target_compile_options(sdlang PRIVATE "-Wno-implicit-fallthrough")
 endif()
 
 if (NOT FIPS_IMPORT)
     include_directories(.)
     fips_begin_app(parser cmdline)
+        fips_vs_warning_level(3)
         fips_dir(samples GROUP ".")
         fips_files(
             parser.c
         )
         fips_deps(sdlang)
     fips_end_app()
     fips_finish()
+    if (FIPS_MSVC)
+        target_compile_definitions(parser PRIVATE _CRT_SECURE_NO_WARNINGS)
+    endif()
 endif()

samples/parser.c

@@ -40,7 +40,7 @@ static void emit_token(const struct sdlang_token_t* token, void* user)
     }
 
     const char* text = token->string.from;
-    const int len = token->string.to - token->string.from;
+    const int len = (const int)(token->string.to - token->string.from);
 
     switch (token->type)
     {
@@ -215,7 +215,7 @@ int main(int argc, char* argv[])
         }
 
         file = fopen(argv[argc - 1], "rb");
-        
+
         if (file == NULL)
         {
             fprintf(stderr, "failed to open: %s\n", argv[argc - 1]);

sdlang.c

@@ -25,7 +25,7 @@ void sdlang_emit_token(const struct sdlang_token_t* token, void* user)
     }
 
     const char* value = token->string.from;
-    const int len = token->string.to - value;
+    const int len = (const int)(token->string.to - value);
 
 #define size_minus_one(dst) \
     ((int)sizeof(vtbl->dst) - 1)

sdlang.inl

@@ -52,7 +52,7 @@ int sdlang_parse(size_t (*stream)(void* ptr, size_t size, void* user), void* use
             break;
         }
 
-        len = stream(p, space, user);
+        len = (int)stream(p, space, user);
         pe = p + len;
 
         if (len < space)
@@ -140,7 +140,7 @@ tr32:
 /* #line 127 "sdlang.rl" */
 	{te = p+1;{p--; {
         check_stack_size(&p, pe, top, curline);
-    {stack[top++] = 21; goto st23;}}}}
+    {stack[top++] = 21;goto st23;}}}}
 	goto st21;
 st21:
 /* #line 1 "NONE" */
@@ -264,7 +264,7 @@ tr46:
             emit(SDLANG_TOKEN_BLOCK, ts, te, curline, user);
             {
         check_stack_size(&p, pe, top, curline);
-    {stack[top++] = 23; goto st23;}}
+    {stack[top++] = 23;goto st23;}}
         }}
 	goto st23;
 tr47:
@@ -1286,7 +1286,7 @@ case 57:
         }
         else
         {
-            have = pe - ts;
+            have = (int)(pe - ts);
             SDLANG_MEMMOVE(buf, ts, have);
             te = buf + (te - ts);
             ts = buf;

sdlang.rl

@@ -152,7 +152,7 @@ int sdlang_parse(size_t (*stream)(void* ptr, size_t size, void* user), void* use
             break;
         }
 
-        len = stream(p, space, user);
+        len = (int)stream(p, space, user);
         pe = p + len;
 
         if (len < space)
@@ -181,7 +181,7 @@ int sdlang_parse(size_t (*stream)(void* ptr, size_t size, void* user), void* use
         }
         else
         {
-            have = pe - ts;
+            have = (int)(pe - ts);
             SDLANG_MEMMOVE(buf, ts, have);
             te = buf + (te - ts);
             ts = buf;