prod/php/ElasticOTel/Util/EnumUtilTrait.php

<?php

/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

/** @noinspection PhpIllegalPsrClassPathInspection */

declare(strict_types=1);

namespace Elastic\OTel\Util;

/**
 * Code in this file is part of implementation internals, and thus it is not covered by the backward compatibility.
 *
 * @internal
 */
trait EnumUtilTrait
{
    public static function tryToFindByName(string $enumName): ?self
    {
        /** @var ?array<string, self> $mapByName */
        static $mapByName = null;

        if ($mapByName === null) {
            $mapByName = [];
            foreach (self::cases() as $enumCase) {
                $mapByName[$enumCase->name] = $enumCase;
            }
        }

        return ArrayUtil::getValueIfKeyExistsElse($enumName, $mapByName, fallbackValue: null);
    }
}