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   1  <?php
   2  
   3  /*
   4   * This file is part of Twig.
   5   *
   6   * (c) 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  namespace Twig\TokenParser;
  13  
  14  use Twig\Node\Expression\AssignNameExpression;
  15  use Twig\Node\ImportNode;
  16  use Twig\Token;
  17  
  18  /**
  19   * Imports macros.
  20   *
  21   *   {% from 'forms.html' import forms %}
  22   */
  23  final class FromTokenParser extends AbstractTokenParser
  24  {
  25      public function parse(Token $token)
  26      {
  27          $macro = $this->parser->getExpressionParser()->parseExpression();
  28          $stream = $this->parser->getStream();
  29          $stream->expect(/* Token::NAME_TYPE */ 5, 'import');
  30  
  31          $targets = [];
  32          do {
  33              $name = $stream->expect(/* Token::NAME_TYPE */ 5)->getValue();
  34  
  35              $alias = $name;
  36              if ($stream->nextIf('as')) {
  37                  $alias = $stream->expect(/* Token::NAME_TYPE */ 5)->getValue();
  38              }
  39  
  40              $targets[$name] = $alias;
  41  
  42              if (!$stream->nextIf(/* Token::PUNCTUATION_TYPE */ 9, ',')) {
  43                  break;
  44              }
  45          } while (true);
  46  
  47          $stream->expect(/* Token::BLOCK_END_TYPE */ 3);
  48  
  49          $var = new AssignNameExpression($this->parser->getVarName(), $token->getLine());
  50          $node = new ImportNode($macro, $var, $token->getLine(), $this->getTag(), $this->parser->isMainScope());
  51  
  52          foreach ($targets as $name => $alias) {
  53              $this->parser->addImportedSymbol('function', $alias, 'macro_'.$name, $var);
  54          }
  55  
  56          return $node;
  57      }
  58  
  59      public function getTag()
  60      {
  61          return 'from';
  62      }
  63  }
  64  
  65  class_alias('Twig\TokenParser\FromTokenParser', 'Twig_TokenParser_From');