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fix #216, fix #199

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neargye 2022-11-07 21:00:16 +04:00
parent 596f00c0db
commit 8bd403f888
10 changed files with 502 additions and 298 deletions
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21
include/magic_enum_format.hpp
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@ -43,12 +43,6 @@
# define MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT_AUTO_DEFINE
#endif // MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT
#if !defined(MAGIC_ENUM_NO_EXCEPTIONS) && (defined(__cpp_exceptions) || defined(_EXCEPTIONS) || defined(_HAS_EXCEPTIONS))
# define MAGIC_ENUM_THROW throw std::format_error
#else
# define MAGIC_ENUM_THROW std::terminate(); (void)
#endif
namespace magic_enum::customize {
// customize enum to enable/disable automatic std::format
template <typename E>
@ -62,18 +56,15 @@ namespace magic_enum::customize {
template <typename E>
struct std::formatter<E, std::enable_if_t<std::is_enum_v<E> && magic_enum::customize::enum_format_enabled<E>(), char>> : std::formatter<std::string_view, char> {
auto format(E e, format_context& ctx) {
static_assert(std::is_same_v<char, string_view::value_type>, "formatter requires string_view::value_type type same as char.");
using D = std::decay_t<E>;
if constexpr (magic_enum::detail::is_flags_v<D>) {
if (auto name = magic_enum::enum_flags_name<D>(e); !name.empty()) {
return this->std::formatter<std::string_view, char>::format(std::string_view{name.data(), name.size()}, ctx);
}
} else {
if (auto name = magic_enum::enum_name<D>(e); !name.empty()) {
return this->std::formatter<std::string_view, char>::format(std::string_view{name.data(), name.size()}, ctx);
if constexpr (detail::supported<D>::value) {
if (const auto name = magic_enum::enum_name<D, magic_enum::as_flags<magic_enum::detail::is_flags_v<D>>>(e); !name.empty()) {
return std::formatter<std::string_view, char>::format(std::string_view{name.data(), name.size()}, ctx);
}
}
constexpr auto type_name = magic_enum::enum_type_name<E>();
MAGIC_ENUM_THROW("Type of " + std::string{type_name.data(), type_name.size()} + " enum value: " + std::to_string(magic_enum::enum_integer<D>(e)) + " is not exists.");
return std::formatter<std::string_view, char>::format(std::to_string(magic_enum::enum_integer<D>(e)), ctx);
}
};