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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 | * @author Fabien Potencier <fabien@symfony.com> | |
16 | */ | |
17 | interface Twig_NodeVisitorInterface | |
18 | { | |
19 | /** | |
20 | * Called before child nodes are visited. | |
21 | * | |
22 | * @param Twig_NodeInterface $node The node to visit | |
23 | * @param Twig_Environment $env The Twig environment instance | |
24 | * | |
25 | * @return Twig_NodeInterface The modified node | |
26 | */ | |
27 | public function enterNode(Twig_NodeInterface $node, Twig_Environment $env); | |
28 | ||
29 | /** | |
30 | * Called after child nodes are visited. | |
31 | * | |
32 | * @param Twig_NodeInterface $node The node to visit | |
33 | * @param Twig_Environment $env The Twig environment instance | |
34 | * | |
35 | * @return Twig_NodeInterface|false The modified node or false if the node must be removed | |
36 | */ | |
37 | public function leaveNode(Twig_NodeInterface $node, Twig_Environment $env); | |
38 | ||
39 | /** | |
40 | * Returns the priority for this visitor. | |
41 | * | |
42 | * Priority should be between -10 and 10 (0 is the default). | |
43 | * | |
44 | * @return integer The priority level | |
45 | */ | |
46 | public function getPriority(); | |
47 | } |