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/vendor/twig/twig/src/Node/ -> CheckToStringNode.php (source)

   1  <?php
   2  
   3  /*
   4   * This file is part of Twig.
   5   *
   6   * (c) Fabien Potencier
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  namespace Twig\Node;
  13  
  14  use Twig\Compiler;
  15  use Twig\Node\Expression\AbstractExpression;
  16  
  17  /**
  18   * Checks if casting an expression to __toString() is allowed by the sandbox.
  19   *
  20   * For instance, when there is a simple Print statement, like {{ article }},
  21   * and if the sandbox is enabled, we need to check that the __toString()
  22   * method is allowed if 'article' is an object. The same goes for {{ article|upper }}
  23   * or {{ random(article) }}
  24   *
  25   * @author Fabien Potencier <fabien@symfony.com>
  26   */
  27  class CheckToStringNode extends AbstractExpression
  28  {
  29      public function __construct(AbstractExpression $expr)
  30      {
  31          parent::__construct(['expr' => $expr], [], $expr->getTemplateLine(), $expr->getNodeTag());
  32      }
  33  
  34      public function compile(Compiler $compiler)
  35      {
  36          $expr = $this->getNode('expr');
  37          $compiler
  38              ->raw('$this->sandbox->ensureToStringAllowed(')
  39              ->subcompile($expr)
  40              ->raw(', ')
  41              ->repr($expr->getTemplateLine())
  42              ->raw(', $this->source)')
  43          ;
  44      }
  45  }


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