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/vendor/twig/twig/src/TokenParser/ -> SandboxTokenParser.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\TokenParser;
  13  
  14  use Twig\Error\SyntaxError;
  15  use Twig\Node\IncludeNode;
  16  use Twig\Node\SandboxNode;
  17  use Twig\Node\TextNode;
  18  use Twig\Token;
  19  
  20  /**
  21   * Marks a section of a template as untrusted code that must be evaluated in the sandbox mode.
  22   *
  23   *    {% sandbox %}
  24   *        {% include 'user.html' %}
  25   *    {% endsandbox %}
  26   *
  27   * @see https://twig.symfony.com/doc/api.html#sandbox-extension for details
  28   */
  29  final class SandboxTokenParser extends AbstractTokenParser
  30  {
  31      public function parse(Token $token)
  32      {
  33          $stream = $this->parser->getStream();
  34          $stream->expect(/* Token::BLOCK_END_TYPE */ 3);
  35          $body = $this->parser->subparse([$this, 'decideBlockEnd'], true);
  36          $stream->expect(/* Token::BLOCK_END_TYPE */ 3);
  37  
  38          // in a sandbox tag, only include tags are allowed
  39          if (!$body instanceof IncludeNode) {
  40              foreach ($body as $node) {
  41                  if ($node instanceof TextNode && ctype_space($node->getAttribute('data'))) {
  42                      continue;
  43                  }
  44  
  45                  if (!$node instanceof IncludeNode) {
  46                      throw new SyntaxError('Only "include" tags are allowed within a "sandbox" section.', $node->getTemplateLine(), $stream->getSourceContext());
  47                  }
  48              }
  49          }
  50  
  51          return new SandboxNode($body, $token->getLine(), $this->getTag());
  52      }
  53  
  54      public function decideBlockEnd(Token $token)
  55      {
  56          return $token->test('endsandbox');
  57      }
  58  
  59      public function getTag()
  60      {
  61          return 'sandbox';
  62      }
  63  }
  64  
  65  class_alias('Twig\TokenParser\SandboxTokenParser', 'Twig_TokenParser_Sandbox');


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