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65 lines
3 KiB
C++
65 lines
3 KiB
C++
// 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 - 2024 Daniil Goncharov <neargye@gmail.com>.
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// Copyright (c) 2022 - 2023 Bela Schaum <schaumb@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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#include <iostream>
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#include <magic_enum_containers.hpp>
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enum class Color { RED = 1, GREEN = 2, BLUE = 4 };
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template <>
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struct magic_enum::customize::enum_range<Color> {
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static constexpr bool is_flags = true;
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};
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struct RGB {
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std::uint8_t r {};
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std::uint8_t g {};
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std::uint8_t b {};
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[[nodiscard]] constexpr bool empty() { return std::equal_to{}(r, g) && std::equal_to{}(g, b) && std::equal_to{}(b, 0); }
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[[nodiscard]] constexpr bool operator==(RGB rgb) const noexcept { return std::equal_to{}(r, rgb.r) && std::equal_to{}(g, rgb.g) && std::equal_to{}(b, rgb.b); }
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friend std::ostream& operator<<(std::ostream& ostream, RGB rgb) {
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ostream << "R=" << static_cast<std::uint32_t>(rgb.r) << " G=" << static_cast<std::uint32_t>(rgb.g) << " B=" << static_cast<std::uint32_t>(rgb.b);
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return ostream;
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}
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};
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constexpr std::uint8_t color_max = std::numeric_limits<std::uint8_t>::max();
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int main() {
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constexpr magic_enum::containers::array<Color, RGB> color_rgb_initializer {{{{color_max, 0, 0}, {0, color_max, 0}, {0, 0, color_max}}}};
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std::cout << magic_enum::containers::get<0>(color_rgb_initializer) << std::endl; // R=255 G=0 B=0
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std::cout << magic_enum::containers::get<1>(color_rgb_initializer) << std::endl; // R=0 G=255 B=0
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std::cout << magic_enum::containers::get<2>(color_rgb_initializer) << std::endl; // R=0 G=0 B=255
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std::cout << magic_enum::containers::get<Color::RED>(color_rgb_initializer) << std::endl; // R=255 G=0 B=0
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std::cout << magic_enum::containers::get<Color::GREEN>(color_rgb_initializer) << std::endl; // R=0 G=255 B=0
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std::cout << magic_enum::containers::get<Color::BLUE>(color_rgb_initializer) << std::endl; // R=0 G=0 B=255
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return 0;
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}
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