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improve name_impl

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neargye 2019-08-25 17:02:00 +05:00
parent 22167885d7
commit 2e61a86b2f
1 changed files with 7 additions and 6 deletions
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13
include/magic_enum.hpp
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@ -122,18 +122,19 @@ inline constexpr auto range_v = range_impl<E>();
return {}; // Invalid name. return {}; // Invalid name.
} }
template <typename T>
struct always_false final : std::false_type {};
template <typename E, E V> template <typename E, E V>
[[nodiscard]] constexpr std::string_view name_impl() noexcept { [[nodiscard]] constexpr auto name_impl() noexcept {
static_assert(std::is_enum_v<E>, "magic_enum::detail::name_impl requires enum type."); static_assert(std::is_enum_v<E>, "magic_enum::detail::name_impl requires enum type.");
#if defined(__clang__) #if defined(__clang__) || defined(__GNUC__) && __GNUC__ >= 9
return pretty_name({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 2}); return pretty_name({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 2});
#elif defined(__GNUC__) && __GNUC__ >= 9
return pretty_name({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 51});
#elif defined(_MSC_VER) #elif defined(_MSC_VER)
return pretty_name({__FUNCSIG__, sizeof(__FUNCSIG__) - 17}); return pretty_name({__FUNCSIG__, sizeof(__FUNCSIG__) - 17});
#else #else
# error "magic_enum: Unsupported compiler (https://github.com/Neargye/magic_enum#compiler-compatibility)." static_assert(always_false<E>{}, "magic_enum: Unsupported compiler (https://github.com/Neargye/magic_enum#compiler-compatibility).");
return {}; // Unsupported compiler. return std::string_view{}; // Unsupported compiler.
#endif #endif
} }