<?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\Node;
use Twig\Compiler;
use Twig\Node\Expression\AbstractExpression;
/**
* Checks if casting an expression to __toString() is allowed by the sandbox.
*
* For instance, when there is a simple Print statement, like {{ article }},
* and if the sandbox is enabled, we need to check that the __toString()
* method is allowed if 'article' is an object. The same goes for {{ article|upper }}
* or {{ random(article) }}
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class CheckToStringNode extends AbstractExpression
{
public function __construct(AbstractExpression $expr)
{
parent::__construct(['expr' => $expr], [], $expr->getTemplateLine(), $expr->getNodeTag());
}
public function compile(Compiler $compiler)
{
$expr = $this->getNode('expr');
$compiler
->raw('$this->sandbox->ensureToStringAllowed(')
->subcompile($expr)
->raw(', ')
->repr($expr->getTemplateLine())
->raw(', $this->source)')
;
}
}