inc/3rdparty/Twig/TokenParser/Filter.php

   1 <?php
   2
   3 /*
   4  * This file is part of Twig.
   5  *
   6  * (c) 2009 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 /**
  13  * Filters a section of a template by applying filters.
  14  *
  15  * <pre>
  16  * {% filter upper %}
  17  *  This text becomes uppercase
  18  * {% endfilter %}
  19  * </pre>
  20  */
  21 class Twig_TokenParser_Filter extends Twig_TokenParser
  22 {
  23     /**
  24      * Parses a token and returns a node.
  25      *
  26      * @param Twig_Token $token A Twig_Token instance
  27      *
  28      * @return Twig_NodeInterface A Twig_NodeInterface instance
  29      */
  30     public function parse(Twig_Token $token)
  31     {
  32         $name = $this->parser->getVarName();
  33         $ref = new Twig_Node_Expression_BlockReference(new Twig_Node_Expression_Constant($name, $token->getLine()), true, $token->getLine(), $this->getTag());
  34
  35         $filter = $this->parser->getExpressionParser()->parseFilterExpressionRaw($ref, $this->getTag());
  36         $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
  37
  38         $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
  39         $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
  40
  41         $block = new Twig_Node_Block($name, $body, $token->getLine());
  42         $this->parser->setBlock($name, $block);
  43
  44         return new Twig_Node_Print($filter, $token->getLine(), $this->getTag());
  45     }
  46
  47     public function decideBlockEnd(Twig_Token $token)
  48     {
  49         return $token->test('endfilter');
  50     }
  51
  52     /**
  53      * Gets the tag name associated with this token parser.
  54      *
  55      * @return string The tag name
  56      */
  57     public function getTag()
  58     {
  59         return 'filter';
  60     }
  61 }