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Add three-way comparison feature test macro

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This commit is contained in:
Florian Albrechtskirchinger 2022-03-09 09:43:09 +01:00
parent 6dcd1ab0c8
commit 23171408bd
3 changed files with 20 additions and 0 deletions
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9
include/nlohmann/detail/macro_scope.hpp
View File

@ -97,6 +97,15 @@
#define JSON_HAS_FILESYSTEM 0
#endif
#ifndef JSON_HAS_THREE_WAY_COMPARISON
#if defined(__cpp_lib_three_way_comparison) && __cpp_lib_three_way_comparison >= 201907L \
&& defined(__cpp_impl_three_way_comparison)&& __cpp_impl_three_way_comparison >= 201907L
#define JSON_HAS_THREE_WAY_COMPARISON 1
#else
#define JSON_HAS_THREE_WAY_COMPARISON 0
#endif
#endif
// disable documentation warnings on clang
#if defined(__clang__)
#pragma clang diagnostic push

1
include/nlohmann/detail/macro_unscope.hpp
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@ -24,6 +24,7 @@
#undef JSON_HAS_CPP_20
#undef JSON_HAS_FILESYSTEM
#undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
#undef JSON_HAS_THREE_WAY_COMPARISON
#endif
#include <nlohmann/thirdparty/hedley/hedley_undef.hpp>

10
single_include/nlohmann/json.hpp
View File

@ -2394,6 +2394,15 @@ using is_detected_convertible =
#define JSON_HAS_FILESYSTEM 0
#endif
#ifndef JSON_HAS_THREE_WAY_COMPARISON
#if defined(__cpp_lib_three_way_comparison) && __cpp_lib_three_way_comparison >= 201907L \
&& defined(__cpp_impl_three_way_comparison)&& __cpp_impl_three_way_comparison >= 201907L
#define JSON_HAS_THREE_WAY_COMPARISON 1
#else
#define JSON_HAS_THREE_WAY_COMPARISON 0
#endif
#endif
// disable documentation warnings on clang
#if defined(__clang__)
#pragma clang diagnostic push
@ -21956,6 +21965,7 @@ inline nlohmann::json::json_pointer operator "" _json_pointer(const char* s, std
#undef JSON_HAS_CPP_20
#undef JSON_HAS_FILESYSTEM
#undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
#undef JSON_HAS_THREE_WAY_COMPARISON
#endif
// #include <nlohmann/thirdparty/hedley/hedley_undef.hpp>