1 <?php

     2 

     3 /*

     4  * This file is part of Twig.

     5  *

     6  * (c) 2009 Fabien Potencier

     7  *

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

     9  * file that was distributed with this source code.

    10  */

    11 

    12 /**

    13  * Twig_NodeVisitorInterface is the interface the all node visitor classes must implement.

    14  *

    15  * @package    twig

    16  * @author     Fabien Potencier <fabien@symfony.com>

    17  */

    18 interface Twig_NodeVisitorInterface

    19 {

    20     /**

    21      * Called before child nodes are visited.

    22      *

    23      * @param Twig_NodeInterface $node The node to visit

    24      * @param Twig_Environment   $env  The Twig environment instance

    25      *

    26      * @param Twig_NodeInterface The modified node

    27      */

    28     function enterNode(Twig_NodeInterface $node, Twig_Environment $env);

    29 

    30     /**

    31      * Called after child nodes are visited.

    32      *

    33      * @param Twig_NodeInterface $node The node to visit

    34      * @param Twig_Environment   $env  The Twig environment instance

    35      *

    36      * @param Twig_NodeInterface The modified node

    37      */

    38     function leaveNode(Twig_NodeInterface $node, Twig_Environment $env);

    39 

    40     /**

    41      * Returns the priority for this visitor.

    42      *

    43      * Priority should be between -10 and 10 (0 is the default).

    44      *

    45      * @return integer The priority level

    46      */

    47     function getPriority();

    48 }