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Add error_code comparisons against standard error code enums (to resolve the ambiguity when an enum is both standard and ours)

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Peter Dimov
2021-06-15 02:17:26 +03:00
parent a9da17f2e2
commit 96cd1c0163
1 changed files with 26 additions and 0 deletions
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26
include/boost/system/detail/error_code.hpp
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@ -390,6 +390,32 @@ public:
return !( lhs == rhs );
}
//
template<class E, class N1 = void, class N2 = typename detail::enable_if<std::is_error_code_enum<E>::value>::type>
inline friend bool operator==( error_code const & lhs, E rhs ) BOOST_NOEXCEPT
{
return lhs == make_error_code( rhs );
}
template<class E, class N1 = void, class N2 = typename detail::enable_if<std::is_error_code_enum<E>::value>::type>
inline friend bool operator==( E lhs, error_code const & rhs ) BOOST_NOEXCEPT
{
return make_error_code( lhs ) == rhs;
}
template<class E, class N1 = void, class N2 = typename detail::enable_if<std::is_error_code_enum<E>::value>::type>
inline friend bool operator!=( error_code const & lhs, E rhs ) BOOST_NOEXCEPT
{
return !( lhs == rhs );
}
template<class E, class N1 = void, class N2 = typename detail::enable_if<std::is_error_code_enum<E>::value>::type>
inline friend bool operator!=( E lhs, error_code const & rhs ) BOOST_NOEXCEPT
{
return !( lhs == rhs );
}
#if defined(BOOST_SYSTEM_CLANG_6)
inline friend bool operator==( error_code const & lhs, std::error_condition const & rhs ) BOOST_NOEXCEPT