nameof_module/example/example_custom_name.cpp
2020-12-29 20:45:54 +02:00

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// Licensed under the MIT License <http://opensource.org/licenses/MIT>.
// SPDX-License-Identifier: MIT
// Copyright (c) 2020 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 <nameof.hpp>
enum class Color : int { RED = -10, BLUE = 0, GREEN = 10 };
enum class Numbers : int { One, Two, Three };
#if defined(NAMEOF_ENUM_SUPPORTED)
// Сustom definitions of names for enum.
// Specialization of `enum_name` must be injected in `namespace nameof::customize`.
template <>
constexpr std::string_view nameof::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 {}; // Empty string for default value.
}
return {}; // Empty string for unknow value.
}
// Сustom definitions of names for enum.
// Specialization of `enum_name` must be injected in `namespace nameof::customize`.
template <>
constexpr std::string_view nameof::customize::enum_name<Numbers>(Numbers value) noexcept {
switch (value) {
case Numbers::One:
return "the one";
default:
return {}; // Empty string for default or unknow value.
}
}
#endif
// Сustom definitions of names for type.
// Specialization of `type_name` must be injected in `namespace nameof::customize`.
template <>
constexpr std::string_view nameof::customize::type_name<Color>() noexcept {
return "The Color";
}
class a1_test {};
class a2_test {};
// Сustom definitions of names for type.
// Specialization of `type_name` must be injected in `namespace nameof::customize`.
template <>
constexpr std::string_view nameof::customize::type_name<a1_test>() noexcept {
return "Animal";
}
int main() {
#if defined(NAMEOF_ENUM_SUPPORTED)
std::cout << nameof::nameof_enum(Color::RED) << std::endl; // 'the red color'
std::cout << nameof::nameof_enum(Color::BLUE) << std::endl; // 'The BLUE'
std::cout << nameof::nameof_enum(Color::GREEN) << std::endl; // 'GREEN'
std::cout << nameof::nameof_enum(Numbers::One) << std::endl; // 'the one'
std::cout << nameof::nameof_enum(Numbers::Two) << std::endl; // 'Two'
std::cout << nameof::nameof_enum(Numbers::Three) << std::endl; // 'Three'
#endif
std::cout << nameof::nameof_type<Color>() << std::endl; // 'The Color'
std::cout << nameof::nameof_type<Numbers>() << std::endl; // 'Numbers'
std::cout << nameof::nameof_type<a1_test>() << std::endl; // 'Animal'
std::cout << nameof::nameof_type<a2_test>() << std::endl; // 'a2_test'
return 0;
}