PhpFrontend.php

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<?php
namespace TYPO3\CMS\Core\Cache\Frontend;

/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */

use TYPO3\CMS\Core\Cache\Backend\PhpCapableBackendInterface;
use TYPO3\CMS\Core\Cache\Exception\InvalidDataException;

class PhpFrontend extends StringFrontend
{
    public function __construct($identifier, PhpCapableBackendInterface $backend)
    {
        parent::__construct($identifier, $backend);
    }

    public function set($entryIdentifier, $sourceCode, array $tags = array(), $lifetime = null)
    {
        if (!$this->isValidEntryIdentifier($entryIdentifier)) {
            throw new \InvalidArgumentException('"' . $entryIdentifier . '" is not a valid cache entry identifier.', 1264023823);
        }
        if (!is_string($sourceCode)) {
            throw new InvalidDataException('The given source code is not a valid string.', 1264023824);
        }
        foreach ($tags as $tag) {
            if (!$this->isValidTag($tag)) {
                throw new \InvalidArgumentException('"' . $tag . '" is not a valid tag for a cache entry.', 1264023825);
            }
        }
        $sourceCode = '<?php' . LF . $sourceCode . LF . '#';
        $this->backend->set($entryIdentifier, $sourceCode, $tags, $lifetime);
    }

    public function requireOnce($entryIdentifier)
    {
        return $this->backend->requireOnce($entryIdentifier);
    }
}