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From.php (1792B)

      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     public function parse(Twig_Token $token)
     22     {
     23         $macro = $this->parser->getExpressionParser()->parseExpression();
     24         $stream = $this->parser->getStream();
     25         $stream->expect('import');
     26 
     27         $targets = array();
     28         do {
     29             $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
     30 
     31             $alias = $name;
     32             if ($stream->nextIf('as')) {
     33                 $alias = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
     34             }
     35 
     36             $targets[$name] = $alias;
     37 
     38             if (!$stream->nextIf(Twig_Token::PUNCTUATION_TYPE, ',')) {
     39                 break;
     40             }
     41         } while (true);
     42 
     43         $stream->expect(Twig_Token::BLOCK_END_TYPE);
     44 
     45         $node = new Twig_Node_Import($macro, new Twig_Node_Expression_AssignName($this->parser->getVarName(), $token->getLine()), $token->getLine(), $this->getTag());
     46 
     47         foreach ($targets as $name => $alias) {
     48             if ($this->parser->isReservedMacroName($name)) {
     49                 throw new Twig_Error_Syntax(sprintf('"%s" cannot be an imported macro as it is a reserved keyword.', $name), $token->getLine(), $stream->getFilename());
     50             }
     51 
     52             $this->parser->addImportedSymbol('function', $alias, 'get'.$name, $node->getNode('var'));
     53         }
     54 
     55         return $node;
     56     }
     57 
     58     public function getTag()
     59     {
     60         return 'from';
     61     }
     62 }