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Extends.php (1089B)

      1 <?php
      2 
      3 /*
      4  * This file is part of Twig.
      5  *
      6  * (c) 2009 Fabien Potencier
      7  * (c) 2009 Armin Ronacher
      8  *
      9  * For the full copyright and license information, please view the LICENSE
     10  * file that was distributed with this source code.
     11  */
     12 
     13 /**
     14  * Extends a template by another one.
     15  *
     16  * <pre>
     17  *  {% extends "base.html" %}
     18  * </pre>
     19  */
     20 class Twig_TokenParser_Extends extends Twig_TokenParser
     21 {
     22     public function parse(Twig_Token $token)
     23     {
     24         if (!$this->parser->isMainScope()) {
     25             throw new Twig_Error_Syntax('Cannot extend from a block.', $token->getLine(), $this->parser->getFilename());
     26         }
     27 
     28         if (null !== $this->parser->getParent()) {
     29             throw new Twig_Error_Syntax('Multiple extends tags are forbidden.', $token->getLine(), $this->parser->getFilename());
     30         }
     31         $this->parser->setParent($this->parser->getExpressionParser()->parseExpression());
     32 
     33         $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
     34     }
     35 
     36     public function getTag()
     37     {
     38         return 'extends';
     39     }
     40 }