flags_attribute.h

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#pragma once
#include "enum_set_attribute.h"

#define flags_attribute_(namespace_name, enum_type) \
  namespace namespace_name { \
    [[maybe_unused]] inline enum_type& operator ^=(enum_type& lhs, enum_type rhs) {lhs = static_cast<enum_type>(static_cast<std::underlying_type<enum_type>::type>(lhs) ^ static_cast<std::underlying_type<enum_type>::type>(rhs)); return lhs;} \
    [[maybe_unused]] inline enum_type& operator &=(enum_type& lhs, enum_type rhs) {lhs = static_cast<enum_type>(static_cast<std::underlying_type<enum_type>::type>(lhs) & static_cast<std::underlying_type<enum_type>::type>(rhs)); return lhs;} \
    [[maybe_unused]] inline enum_type& operator |=(enum_type& lhs, enum_type rhs) {lhs = static_cast<enum_type>(static_cast<std::underlying_type<enum_type>::type>(lhs) | static_cast<std::underlying_type<enum_type>::type>(rhs)); return lhs;} \
    [[maybe_unused]] inline enum_type& operator +=(enum_type& lhs, enum_type rhs) {lhs = static_cast<enum_type>(static_cast<std::underlying_type<enum_type>::type>(lhs) + static_cast<std::underlying_type<enum_type>::type>(rhs)); return lhs;} \
    [[maybe_unused]] inline enum_type& operator -=(enum_type& lhs, enum_type rhs) {lhs = static_cast<enum_type>(static_cast<std::underlying_type<enum_type>::type>(lhs) - static_cast<std::underlying_type<enum_type>::type>(rhs)); return lhs;} \
    [[maybe_unused]] inline enum_type operator ^(enum_type lhs, enum_type rhs) {return static_cast<enum_type>(static_cast<std::underlying_type<enum_type>::type>(lhs) ^ static_cast<std::underlying_type<enum_type>::type>(rhs));} \
    [[maybe_unused]] inline enum_type operator &(enum_type lhs, enum_type rhs) {return static_cast<enum_type>(static_cast<std::underlying_type<enum_type>::type>(lhs) & static_cast<std::underlying_type<enum_type>::type>(rhs));} \
    [[maybe_unused]] inline enum_type operator |(enum_type lhs, enum_type rhs) {return static_cast<enum_type>(static_cast<std::underlying_type<enum_type>::type>(lhs) | static_cast<std::underlying_type<enum_type>::type>(rhs));} \
    [[maybe_unused]] inline enum_type operator +(enum_type lhs, enum_type rhs) {return static_cast<enum_type>(static_cast<std::underlying_type<enum_type>::type>(lhs) + static_cast<std::underlying_type<enum_type>::type>(rhs));} \
    [[maybe_unused]] inline enum_type operator -(enum_type lhs, enum_type rhs) {return static_cast<enum_type>(static_cast<std::underlying_type<enum_type>::type>(lhs) - static_cast<std::underlying_type<enum_type>::type>(rhs));} \
    [[maybe_unused]] inline enum_type operator ~(enum_type lhs) {return static_cast<enum_type>(~static_cast<std::underlying_type<enum_type>::type>(lhs));} \
  }\
  template<> struct xtd::enum_set_attribute<namespace_name::enum_type> {explicit operator auto() const noexcept {return xtd::enum_attribute::flags;}}