<?php
/*
* This file is part of Twig.
*
* (c) 2009 Fabien Potencier
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
* Interface implemented by extension classes.
*
* @package twig
* @author Fabien Potencier <fabien@symfony.com>
*/
interface Twig_ExtensionInterface
{
/**
* Initializes the runtime environment.
*
* This is where you can load some file that contains filter functions for instance.
*
* @param Twig_Environment $environment The current Twig_Environment instance
*/
function initRuntime(Twig_Environment $environment);
/**
* Returns the token parser instances to add to the existing list.
*
* @return array An array of Twig_TokenParserInterface or Twig_TokenParserBrokerInterface instances
*/
function getTokenParsers();
/**
* Returns the node visitor instances to add to the existing list.
*
* @return array An array of Twig_NodeVisitorInterface instances
*/
function getNodeVisitors();
/**
* Returns a list of filters to add to the existing list.
*
* @return array An array of filters
*/
function getFilters();
/**
* Returns a list of tests to add to the existing list.
*
* @return array An array of tests
*/
function getTests();
/**
* Returns a list of functions to add to the existing list.
*
* @return array An array of functions
*/
function getFunctions();
/**
* Returns a list of operators to add to the existing list.
*
* @return array An array of operators
*/
function getOperators();
/**
* Returns a list of global variables to add to the existing list.
*
* @return array An array of global variables
*/
function getGlobals();
/**
* Returns the name of the extension.
*
* @return string The extension name
*/
function getName();
}