<?php

/*

 * This file is part of Twig.

 *

 * (c) 2010 Fabien Potencier

 * (c) 2010 Arnaud Le Blanc

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

/**

 * Represents a template function.

 *

 * @package    twig

 * @author     Arnaud Le Blanc <arnaud.lb@gmail.com>

 */

interface Twig_FunctionInterface

{

    /**

     * Compiles a function.

     *

     * @return string The PHP code for the function

     */

    function compile();

    function needsEnvironment();

    function needsContext();

    function getSafe(Twig_Node $filterArgs);

}