peak_common_defines.h

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#pragma once
 
// clang-format off
#if defined(__cplusplus) && ((__cplusplus >= 201703L) || (defined(_MSVC_LANG) && (_MSVC_LANG >= 201703L)))
// clang-format on
#    define PEAK_COMMON_NO_DISCARD [[nodiscard]]

#    define PEAK_COMMON_MAYBE_UNUSED [[maybe_unused]]
 
#else
 
#    ifdef __has_c_attribute
#        define PEAK_COMMON_has_c_attribute(x) __has_c_attribute(x)
#    else
#        define PEAK_COMMON_has_c_attribute(x) 0
#    endif
 
#    if PEAK_COMMON_has_c_attribute(nodiscard)
#        define PEAK_COMMON_NO_DISCARD [[nodiscard]]
 
#    elif defined(__clang__) || defined(__GNUC__) || defined(__GNUG__)
#        define PEAK_COMMON_NO_DISCARD __attribute__((warn_unused_result))
 
#    elif defined(_MSC_VER)
#        define PEAK_COMMON_NO_DISCARD _Check_return_
 
#    else
#        define PEAK_COMMON_NO_DISCARD
 
#    endif
 
#    if PEAK_COMMON_has_c_attribute(maybe_unused)
#        define PEAK_COMMON_MAYBE_UNUSED [[maybe_unused]]
 
#    elif defined(__clang__) || defined(__GNUC__) || defined(__GNUG__)
#        define PEAK_COMMON_MAYBE_UNUSED __attribute__((unused))
 
#    else
#        define PEAK_COMMON_MAYBE_UNUSED
 
#    endif
 
#endif /* language mode */