StringEnumMap.php

<?php
 
/*
 *
 *  ____            _        _   __  __ _                  __  __ ____
 * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
 * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
 * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
 * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * @author PocketMine Team
 * @link http://www.pocketmine.net/
 *
 *
 */
 
declare(strict_types=1);
 
namespace pocketmine\data\bedrock\block\convert;
 
use pocketmine\data\bedrock\block\BlockStateDeserializeException;
use function spl_object_id;
 
class StringEnumMap{
    private array $enumToValue = [];
 
    private array $valueToEnum = [];
 
    public function __construct(
        private string $class,
        \Closure $mapper
    ){
        foreach($class::cases() as $case){
            $string = $mapper($case);
            $this->valueToEnum[$string] = $case;
            $this->enumToValue[spl_object_id($case)] = $string;
        }
    }
 
    public function enumToValue(\UnitEnum $enum) : string{
        return $this->enumToValue[spl_object_id($enum)];
    }
 
    public function valueToEnum(string $string) : ?\UnitEnum{
        return $this->valueToEnum[$string] ?? throw new BlockStateDeserializeException("No $this->class enum mapping for \"$string\"");
    }
 
    public function getValueToEnum() : array{
        return $this->valueToEnum;
    }
}