magic_enum_format.hpp
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// __ __ _ ______ _____
// | \/ | (_) | ____| / ____|_ _
// | \ / | __ _ __ _ _ ___ | |__ _ __ _ _ _ __ ___ | | _| |_ _| |_
// | |\/| |/ _` |/ _` | |/ __| | __| | '_ \| | | | '_ ` _ \ | | |_ _|_ _|
// | | | | (_| | (_| | | (__ | |____| | | | |_| | | | | | | | |____|_| |_|
// |_| |_|\__,_|\__, |_|\___| |______|_| |_|\__,_|_| |_| |_| \_____|
// __/ | https://github.com/Neargye/magic_enum
// |___/ version 0.8.1
//
// Licensed under the MIT License <http://opensource.org/licenses/MIT>.
// SPDX-License-Identifier: MIT
// Copyright (c) 2019 - 2022 Daniil Goncharov <neargye@gmail.com>.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#ifndef NEARGYE_MAGIC_ENUM_FORMAT_HPP
#define NEARGYE_MAGIC_ENUM_FORMAT_HPP
#if !defined(__cpp_lib_format)
# error "Format is not supported"
#endif
#include "magic_enum.hpp"
#if !defined(MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT)
# define MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT true
# define MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT_AUTO_DEFINE
#endif // MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT
namespace magic_enum::customize {
// customize enum to enable/disable automatic std::format
template <typename E>
constexpr bool enum_format_enabled() noexcept {
return MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT;
}
} // magic_enum::customize
#include <format>
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) {
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);
}
}
constexpr auto type_name = magic_enum::enum_type_name<E>();
throw std::format_error("Type of " + std::string{type_name.data(), type_name.size()} + " enum value: " + std::to_string(magic_enum::enum_integer<D>(e)) + " is not exists.");
}
};
#if defined(MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT_AUTO_DEFINE)
# undef MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT
# undef MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT_AUTO_DEFINE
#endif // MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT_AUTO_DEFINE
#endif // NEARGYE_MAGIC_ENUM_FORMAT_HPP