<?php

/*
 * This file is part of PHP CS Fixer.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *     Dariusz Rumiński <dariusz.ruminski@gmail.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace PhpCsFixer\Differ;

/**
 * @author Dariusz Rumiński <dariusz.ruminski@gmail.com>
 */
interface DifferInterface
{
    /**
     * Create diff.
     *
     * @param string $old
     * @param string $new
     *
     * @return string
     *
     * TODO: on 3.0 pass the file name (if applicable) for which this diff is
     */
    public function diff($old, $new);
}