util.hpp

// clang-format off
#define BSONCXX_STRINGIFY(...) BSONCXX_STRINGIFY_IMPL(__VA_ARGS__)
#define BSONCXX_STRINGIFY_IMPL(...) #__VA_ARGS__
 
#define BSONCXX_CONCAT(A, ...) BSONCXX_CONCAT_IMPL(A, __VA_ARGS__)
#define BSONCXX_CONCAT_IMPL(A, ...) A##__VA_ARGS__
 
#define BSONCXX_PRAGMA(...) _bsoncxxPragma(__VA_ARGS__)
#ifdef _MSC_VER
// Old MSVC doesn't recognize C++11 _Pragma(), but it always recognized __pragma
#define _bsoncxxPragma(...) __pragma(__VA_ARGS__)
#else
#define _bsoncxxPragma(...) _Pragma(BSONCXX_STRINGIFY(__VA_ARGS__))
#endif
 
#define BSONCXX_FORCE_SEMICOLON static_assert(true, "")
 
#define BSONCXX_RETURNS(...)                                 \
    noexcept(noexcept(__VA_ARGS__))->decltype(__VA_ARGS__) { \
        return __VA_ARGS__;                                  \
    }                                                        \
    BSONCXX_FORCE_SEMICOLON
 
#if __cplusplus >= 201402L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201402L && _MSC_VER > 1910)
#define bsoncxx_cxx14_constexpr constexpr
#else
#define bsoncxx_cxx14_constexpr inline
#endif
 
#define BSONCXX_DISABLE_WARNING(Spec) \
    BSONCXX_CONCAT(_bsoncxxDisableWarningImpl_for_, Spec) \
    BSONCXX_FORCE_SEMICOLON
 
#define BSONCXX_PUSH_WARNINGS() \
    BSONCXX_IF_GNU_LIKE(BSONCXX_PRAGMA(GCC diagnostic push)) \
    BSONCXX_IF_MSVC(BSONCXX_PRAGMA(warning(push))) \
    BSONCXX_FORCE_SEMICOLON
 
#define BSONCXX_POP_WARNINGS() \
    BSONCXX_IF_GNU_LIKE(BSONCXX_PRAGMA(GCC diagnostic pop)) \
    BSONCXX_IF_MSVC(BSONCXX_PRAGMA(warning(pop))) \
    BSONCXX_FORCE_SEMICOLON
 
#define _bsoncxxDisableWarningImpl_for_GCC(...) \
    BSONCXX_IF_GCC(BSONCXX_PRAGMA(GCC diagnostic ignored __VA_ARGS__))
 
#define _bsoncxxDisableWarningImpl_for_Clang(...) \
    BSONCXX_IF_CLANG(BSONCXX_PRAGMA(GCC diagnostic ignored __VA_ARGS__))
 
#define _bsoncxxDisableWarningImpl_for_GNU(...) \
    _bsoncxxDisableWarningImpl_for_GCC(__VA_ARGS__) \
    _bsoncxxDisableWarningImpl_for_Clang(__VA_ARGS__)
 
#define _bsoncxxDisableWarningImpl_for_MSVC(...) \
    BSONCXX_IF_MSVC(BSONCXX_PRAGMA(warning(disable : __VA_ARGS__)))
 
#define BSONCXX_FWD(...) static_cast<decltype(__VA_ARGS__)&&>(__VA_ARGS__)