* {% sandbox %} * {% include 'user.html' %} * {% endsandbox %} * * * @see https://www.twig-project.org/doc/api.html#sandbox-extension for details */ class Twig_TokenParser_Sandbox extends Twig_TokenParser { /** * Parses a token and returns a node. * * @param Twig_Token $token A Twig_Token instance * * @return Twig_NodeInterface A Twig_NodeInterface instance */ public function parse(Twig_Token $token) { $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE); $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true); $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE); // in a sandbox tag, only include tags are allowed if (!$body instanceof Twig_Node_Include) { foreach ($body as $node) { if ($node instanceof Twig_Node_Text && ctype_space($node->getAttribute('data'))) { continue; } if (!$node instanceof Twig_Node_Include) { throw new Twig_Error_Syntax('Only "include" tags are allowed within a "sandbox" section', $node->getLine(), $this->parser->getFilename()); } } } return new Twig_Node_Sandbox($body, $token->getLine(), $this->getTag()); } public function decideBlockEnd(Twig_Token $token) { return $token->test('endsandbox'); } /** * Gets the tag name associated with this token parser. * * @return string The tag name */ public function getTag() { return 'sandbox'; } }