50 lines
1.2 KiB
PHP
50 lines
1.2 KiB
PHP
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<?php
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/*
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* This file is part of Twig.
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*
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* (c) Fabien Potencier
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Twig\NodeVisitor;
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use Twig\Environment;
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use Twig\Node\Node;
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/**
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* Used to make node visitors compatible with Twig 1.x and 2.x.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*
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* @deprecated since 3.9 (to be removed in 4.0)
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*/
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abstract class AbstractNodeVisitor implements NodeVisitorInterface
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{
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final public function enterNode(Node $node, Environment $env): Node
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{
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return $this->doEnterNode($node, $env);
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}
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final public function leaveNode(Node $node, Environment $env): ?Node
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{
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return $this->doLeaveNode($node, $env);
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}
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/**
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* Called before child nodes are visited.
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*
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* @return Node The modified node
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*/
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abstract protected function doEnterNode(Node $node, Environment $env);
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/**
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* Called after child nodes are visited.
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*
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* @return Node|null The modified node or null if the node must be removed
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*/
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abstract protected function doLeaveNode(Node $node, Environment $env);
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}
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