1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
// Licensed under the MIT License <http://opensource.org/licenses/MIT>.
// SPDX-License-Identifier: MIT
// Copyright (c) 2019 - 2024 Daniil Goncharov <neargye@gmail.com>.
// Copyright (c) 2022 - 2023 Bela Schaum <schaumb@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/magic_enum_containers.hpp>
enum class Color { RED = 1, GREEN = 2, BLUE = 4 };
template <>
struct magic_enum::customize::enum_range<Color> {
static constexpr bool is_flags = true;
};
struct RGB {
std::uint8_t r {};
std::uint8_t g {};
std::uint8_t b {};
[[nodiscard]] constexpr bool empty() { return std::equal_to{}(r, g) && std::equal_to{}(g, b) && std::equal_to{}(b, 0); }
[[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); }
friend std::ostream& operator<<(std::ostream& ostream, RGB rgb) {
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);
return ostream;
}
};
constexpr std::uint8_t color_max = std::numeric_limits<std::uint8_t>::max();
int main() {
constexpr magic_enum::containers::array<Color, RGB> color_rgb_initializer {{{{color_max, 0, 0}, {0, color_max, 0}, {0, 0, color_max}}}};
std::cout << magic_enum::containers::get<0>(color_rgb_initializer) << std::endl; // R=255 G=0 B=0
std::cout << magic_enum::containers::get<1>(color_rgb_initializer) << std::endl; // R=0 G=255 B=0
std::cout << magic_enum::containers::get<2>(color_rgb_initializer) << std::endl; // R=0 G=0 B=255
std::cout << magic_enum::containers::get<Color::RED>(color_rgb_initializer) << std::endl; // R=255 G=0 B=0
std::cout << magic_enum::containers::get<Color::GREEN>(color_rgb_initializer) << std::endl; // R=0 G=255 B=0
std::cout << magic_enum::containers::get<Color::BLUE>(color_rgb_initializer) << std::endl; // R=0 G=0 B=255
return 0;
}
|
