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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; /** * Interface for node visitor classes. * * @author Fabien Potencier <[email protected]> */ interface NodeVisitorInterface { /** * Called before child nodes are visited. * * @return Node The modified node */ public function enterNode(Node $node, Environment $env); /** * Called after child nodes are visited. * * @return Node|null The modified node or null if the node must be removed */ public function leaveNode(Node $node, Environment $env); /** * Returns the priority for this visitor. * * Priority should be between -10 and 10 (0 is the default). * * @return int The priority level */ public function getPriority(); } class_alias('Twig\NodeVisitor\NodeVisitorInterface', 'Twig_NodeVisitorInterface'); // Ensure that the aliased name is loaded to keep BC for classes implementing the typehint with the old aliased name. class_exists('Twig\Environment');