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workaround enum_type_name

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This commit is contained in:
neargye 2020-08-16 11:00:31 +05:00
parent d73a985f52
commit b6743e4a26
2 changed files with 8 additions and 2 deletions
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8
include/magic_enum.hpp
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@ -274,6 +274,7 @@ constexpr std::uint8_t log2(T value) noexcept {
return log2<U>(static_cast<U>(value));
} else {
static_assert(std::is_integral_v<T>, "magic_enum::detail::log2 requires integral type.");
auto ret = std::uint8_t{0};
for (; value > static_cast<T>(1); value >>= static_cast<T>(1), ++ret) {};
@ -288,6 +289,8 @@ constexpr bool is_pow2(T x) noexcept {
return is_pow2<U>(static_cast<U>(x));
} else {
static_assert(std::is_integral_v<T>, "magic_enum::detail::is_pow2 requires integral type.");
return x != 0 && (x & (x - 1)) == 0;
}
}
@ -595,7 +598,12 @@ template <typename E>
[[nodiscard]] constexpr std::string_view enum_type_name() noexcept {
using D = std::decay_t<E>;
static_assert(std::is_enum_v<D>, "Requires enum type.");
#if defined(_MSC_VER)
// TODO: https://github.com/Neargye/nameof/issues/22
constexpr std::string_view name = std::string_view{detail::type_name_v<D>}.substr(5, detail::type_name_v<D>.size() - 5);
#else
constexpr std::string_view name = detail::type_name_v<D>;
#endif
static_assert(name.size() > 0, "Enum type does not have a name.");
return name;