RMUL2025/lib/magic_enum/example/example_custom_name.cpp

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// Licensed under the MIT License <http://opensource.org/licenses/MIT>.
// SPDX-License-Identifier: MIT
// Copyright (c) 2020 - 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.
#include <iostream>
#include <magic_enum.hpp>
enum class Color : int { RED = -10, BLUE = 0, GREEN = 10 };
// Сustom definitions of names for enum.
// Specialization of `enum_name` must be injected in `namespace magic_enum::customize`.
template <>
constexpr magic_enum::customize::customize_t magic_enum::customize::enum_name<Color>(Color value) noexcept {
switch (value) {
case Color::RED:
return "the red color";
case Color::BLUE:
return "The BLUE";
case Color::GREEN:
return invalid_tag;
}
return default_tag;
}
enum class Numbers : int { One, Two, Three };
// Сustom definitions of names for enum.
// Specialization of `enum_name` must be injected in `namespace magic_enum::customize`.
template <>
constexpr magic_enum::customize::customize_t magic_enum::customize::enum_name<Numbers>(Numbers value) noexcept {
switch (value) {
case Numbers::One:
return "the one";
default:
return default_tag;
}
}
int main() {
std::cout << magic_enum::enum_name(Color::RED) << std::endl; // 'the red color'
std::cout << magic_enum::enum_name(Color::BLUE) << std::endl; // 'The BLUE'
std::cout << magic_enum::enum_name(Color::GREEN) << std::endl; // ''
std::cout << std::boolalpha;
std::cout << (magic_enum::enum_cast<Color>("the red color").value() == Color::RED) << std::endl; // true
std::cout << magic_enum::enum_name(Numbers::One) << std::endl; // 'the one'
std::cout << magic_enum::enum_name(Numbers::Two) << std::endl; // 'Two'
std::cout << magic_enum::enum_name(Numbers::Three) << std::endl; // 'Three'
return 0;
}