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neargye 2024-11-14 00:38:01 +01:00
parent e2797c4627
commit bd2edb8368
2 changed files with 8 additions and 7 deletions
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14
include/magic_enum/magic_enum_format.hpp
View file

@ -35,10 +35,12 @@
#include "magic_enum.hpp" #include "magic_enum.hpp"
#include "magic_enum_flags.hpp" #include "magic_enum_flags.hpp"
namespace magic_enum::detail {
template <typename E, std::enable_if_t<std::is_enum_v<std::decay_t<E>>, int> = 0> template <typename E, std::enable_if_t<std::is_enum_v<std::decay_t<E>>, int> = 0>
std::string format_as(E e) { std::string format_as(E e) {
using D = std::decay_t<E>; using D = std::decay_t<E>;
static_assert(std::is_same_v<char, magic_enum::string_view::value_type>, "magic_enum::formatter requires string_view::value_type type same as char.");
if constexpr (magic_enum::detail::supported<D>::value) { if constexpr (magic_enum::detail::supported<D>::value) {
if constexpr (magic_enum::detail::subtype_v<D> == magic_enum::detail::enum_subtype::flags) { if constexpr (magic_enum::detail::subtype_v<D> == magic_enum::detail::enum_subtype::flags) {
if (const auto name = magic_enum::enum_flags_name<D>(e); !name.empty()) { if (const auto name = magic_enum::enum_flags_name<D>(e); !name.empty()) {
@ -53,17 +55,15 @@ std::string format_as(E e) {
return std::to_string(magic_enum::enum_integer<D>(e)); return std::to_string(magic_enum::enum_integer<D>(e));
} }
#if defined(__cpp_lib_format) } // namespace magic_enum::format
#ifndef MAGIC_ENUM_USE_STD_MODULE #if defined(__cpp_lib_format)
#include <format>
#endif
template <typename E> template <typename E>
struct std::formatter<E, std::enable_if_t<std::is_enum_v<std::decay_t<E>>, char>> : std::formatter<std::string_view, char> { struct std::formatter<E, std::enable_if_t<std::is_enum_v<std::decay_t<E>>, char>> : std::formatter<std::string_view, char> {
template <class FormatContext> template <class FormatContext>
auto format(E e, FormatContext& ctx) const { auto format(E e, FormatContext& ctx) const {
return formatter<std::string_view, char>::format(format_as<E>(e), ctx); return formatter<std::string_view, char>::format(magic_enum::detail::format_as<E>(e), ctx);
} }
}; };
@ -75,7 +75,7 @@ template <typename E>
struct fmt::formatter<E, std::enable_if_t<std::is_enum_v<std::decay_t<E>>, char>> : fmt::formatter<std::string_view, char> { struct fmt::formatter<E, std::enable_if_t<std::is_enum_v<std::decay_t<E>>, char>> : fmt::formatter<std::string_view, char> {
template <class FormatContext> template <class FormatContext>
auto format(E e, FormatContext& ctx) const { auto format(E e, FormatContext& ctx) const {
return formatter<std::string_view, char>::format(format_as<E>(e), ctx); return formatter<std::string_view, char>::format(magic_enum::detail::format_as<E>(e), ctx);
} }
}; };

1
test/test.cpp
View file

@ -1176,6 +1176,7 @@ TEST_CASE("multdimensional-switch-case") {
#if defined(__cpp_lib_format) #if defined(__cpp_lib_format)
#include <format>
#include <magic_enum/magic_enum_format.hpp> #include <magic_enum/magic_enum_format.hpp>
TEST_CASE("format-base") { TEST_CASE("format-base") {