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<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Loader;

use Twig\Error\LoaderError;

/**
 * Interface all loaders must implement.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface LoaderInterface
{
    /**
     * Gets the source code of a template, given its name.
     *
     * @param string $name The name of the template to load
     *
     * @return string The template source code
     *
     * @throws LoaderError When $name is not found
     *
     * @deprecated since 1.27 (to be removed in 2.0), implement Twig\Loader\SourceContextLoaderInterface
     */
    public function getSource($name);

/**
     * Gets the cache key to use for the cache for a given template name.
     *
     * @param string $name The name of the template to load
     *
     * @return string The cache key
     *
     * @throws LoaderError When $name is not found
     */
    public function getCacheKey($name);

/**
     * Returns true if the template is still fresh.
     *
     * @param string $name The template name
     * @param int    $time Timestamp of the last modification time of the
     *                     cached template
     *
     * @return bool true if the template is fresh, false otherwise
     *
     * @throws LoaderError When $name is not found
     */
    public function isFresh($name, $time);
}

class_alias('Twig\Loader\LoaderInterface', 'Twig_LoaderInterface');