inc/Twig/TokenParser/From.php

   1 <?php
   2
   3 /*
   4  * This file is part of Twig.
   5  *
   6  * (c) 2010 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  * Imports macros.
  14  *
  15  * <pre>
  16  *   {% from 'forms.html' import forms %}
  17  * </pre>
  18  */
  19 class Twig_TokenParser_From extends Twig_TokenParser
  20 {
  21     /**
  22      * Parses a token and returns a node.
  23      *
  24      * @param Twig_Token $token A Twig_Token instance
  25      *
  26      * @return Twig_NodeInterface A Twig_NodeInterface instance
  27      */
  28     public function parse(Twig_Token $token)
  29     {
  30         $macro = $this->parser->getExpressionParser()->parseExpression();
  31         $stream = $this->parser->getStream();
  32         $stream->expect('import');
  33
  34         $targets = array();
  35         do {
  36             $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
  37
  38             $alias = $name;
  39             if ($stream->test('as')) {
  40                 $stream->next();
  41
  42                 $alias = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
  43             }
  44
  45             $targets[$name] = $alias;
  46
  47             if (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ',')) {
  48                 break;
  49             }
  50
  51             $stream->next();
  52         } while (true);
  53
  54         $stream->expect(Twig_Token::BLOCK_END_TYPE);
  55
  56         $node = new Twig_Node_Import($macro, new Twig_Node_Expression_AssignName($this->parser->getVarName(), $token->getLine()), $token->getLine(), $this->getTag());
  57
  58         foreach ($targets as $name => $alias) {
  59             $this->parser->addImportedSymbol('function', $alias, 'get'.$name, $node->getNode('var'));
  60         }
  61
  62         return $node;
  63     }
  64
  65     /**
  66      * Gets the tag name associated with this token parser.
  67      *
  68      * @return string The tag name
  69      */
  70     public function getTag()
  71     {
  72         return 'from';
  73     }
  74 }