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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) 2010 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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/**
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* Twig_Node_SandboxedPrint adds a check for the __toString() method
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* when the variable is an object and the sandbox is activated.
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*
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* When there is a simple Print statement, like {{ article }},
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* and if the sandbox is enabled, we need to check that the __toString()
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* method is allowed if 'article' is an object.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class Twig_Node_SandboxedPrint extends Twig_Node_Print
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{
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public function __construct(Twig_Node_Expression $expr, $lineno, $tag = null)
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{
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parent::__construct($expr, $lineno, $tag);
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}
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/**
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* Compiles the node to PHP.
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*
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* @param Twig_Compiler A Twig_Compiler instance
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*/
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public function compile(Twig_Compiler $compiler)
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{
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$compiler
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->addDebugInfo($this)
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->write('echo $this->env->getExtension(\'sandbox\')->ensureToStringAllowed(')
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->subcompile($this->getNode('expr'))
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->raw(");\n")
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;
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}
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/**
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* Removes node filters.
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*
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* This is mostly needed when another visitor adds filters (like the escaper one).
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*
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* @param Twig_Node $node A Node
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*/
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protected function removeNodeFilter($node)
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{
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if ($node instanceof Twig_Node_Expression_Filter) {
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return $this->removeNodeFilter($node->getNode('node'));
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}
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return $node;
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}
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}
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