mirror of
https://github.com/Neargye/magic_enum.git
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79 lines
3.6 KiB
C++
79 lines
3.6 KiB
C++
// __ __ _ ______ _____
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// | \/ | (_) | ____| / ____|_ _
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// | \ / | __ _ __ _ _ ___ | |__ _ __ _ _ _ __ ___ | | _| |_ _| |_
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// | |\/| |/ _` |/ _` | |/ __| | __| | '_ \| | | | '_ ` _ \ | | |_ _|_ _|
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// | | | | (_| | (_| | | (__ | |____| | | | |_| | | | | | | | |____|_| |_|
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// |_| |_|\__,_|\__, |_|\___| |______|_| |_|\__,_|_| |_| |_| \_____|
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// __/ | https://github.com/Neargye/magic_enum
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// |___/ version 0.8.0
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//
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// Licensed under the MIT License <http://opensource.org/licenses/MIT>.
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// SPDX-License-Identifier: MIT
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// Copyright (c) 2019 - 2022 Daniil Goncharov <neargye@gmail.com>.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#ifndef NEARGYE_MAGIC_ENUM_FORMAT_HPP
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#define NEARGYE_MAGIC_ENUM_FORMAT_HPP
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#ifndef __cpp_lib_format
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# error "Format is not supported"
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#endif
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#include "magic_enum.hpp"
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#ifndef MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT
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# define MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT true
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# define MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT_AUTO_DEFINE
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#endif // MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT
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namespace magic_enum::customize {
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// customize enum to enable/disable automatic std::format
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template <typename E>
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constexpr bool enum_format_enabled() noexcept {
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return MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT;
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}
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} // magic_enum::customize
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#include <format>
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template<typename E>
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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> {
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auto format(E e, format_context& ctx) {
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if constexpr (magic_enum::detail::is_flags_v<E>) {
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if (auto name = magic_enum::enum_flags_name(e); !name.empty()) {
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return this->std::formatter<std::string_view, char>::format(std::string_view{name.data(), name.size()}, ctx);
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}
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} else {
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if (auto name = magic_enum::enum_name(e); !name.empty()) {
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return this->std::formatter<std::string_view, char>::format(std::string_view{name.data(), name.size()}, ctx);
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}
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}
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constexpr auto type_name = magic_enum::enum_type_name<E>();
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throw std::format_error("Type of " + std::string{type_name.data(), type_name.size()} + " enum value: " +
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std::to_string(magic_enum::enum_integer(e)) + " is not exists.");
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}
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};
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#ifdef MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT_AUTO_DEFINE
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# undef MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT
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# undef MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT_AUTO_DEFINE
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#endif // MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT_AUTO_DEFINE
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#endif // NEARGYE_MAGIC_ENUM_FORMAT_HPP
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