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<?php /* * This file is part of Twig. * * (c) Fabien Potencier * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Twig\NodeVisitor; use Twig\Environment; use Twig\Node\Node; /** * Used to make node visitors compatible with Twig 1.x and 2.x. * * To be removed in Twig 3.1. * * @author Fabien Potencier <[email protected]> */ abstract class AbstractNodeVisitor implements NodeVisitorInterface { final public function enterNode(Node $node, Environment $env) { return $this->doEnterNode($node, $env); } final public function leaveNode(Node $node, Environment $env) { return $this->doLeaveNode($node, $env); } /** * Called before child nodes are visited. * * @return Node The modified node */ abstract protected function doEnterNode(Node $node, Environment $env); /** * Called after child nodes are visited. * * @return Node|null The modified node or null if the node must be removed */ abstract protected function doLeaveNode(Node $node, Environment $env); } class_alias('Twig\NodeVisitor\AbstractNodeVisitor', 'Twig_BaseNodeVisitor');