src/Enum/FlaggedEnum.php
<?php
/**
 * Copyright 2018 AlexaCRM
 *
 * 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.
 *
 */

namespace AlexaCRM\Enum;

use Elao\Enum\AutoDiscoveredValuesTrait;

abstract class FlaggedEnum extends \Elao\Enum\FlaggedEnum {

    use AutoDiscoveredValuesTrait;

    /** @var array */
    private static $readables = [];

    /**
     * {@inheritdoc}
     */
    public static function readables(): array
    {
        $enumType = static::class;

        if (!isset(self::$readables[$enumType])) {
            $constants = (new \ReflectionClass($enumType))->getConstants();
            foreach (static::values() as $value) {
                $constantName = array_search($value, $constants, true);
                self::$readables[$enumType][$value] = $constantName;
            }
        }

        return self::$readables[$enumType];
    }

}
