class Twig_TokenParser_For

class Twig_TokenParser_For extends Twig_TokenParser {

  /**
   * Parses a token and returns a node.
   *
   * @param Twig_Token $token A Twig_Token instance
   *
   * @return Twig_NodeInterface A Twig_NodeInterface instance
   */
  public function parse(Twig_Token $token) {
    $lineno = $token
      ->getLine();
    $targets = $this->parser
      ->getExpressionParser()
      ->parseAssignmentExpression();
    $this->parser
      ->getStream()
      ->expect(Twig_Token::OPERATOR_TYPE, 'in');
    $seq = $this->parser
      ->getExpressionParser()
      ->parseExpression();
    $ifexpr = null;
    if ($this->parser
      ->getStream()
      ->test(Twig_Token::NAME_TYPE, 'if')) {
      $this->parser
        ->getStream()
        ->next();
      $ifexpr = $this->parser
        ->getExpressionParser()
        ->parseExpression();
    }
    $this->parser
      ->getStream()
      ->expect(Twig_Token::BLOCK_END_TYPE);
    $body = $this->parser
      ->subparse(array(
      $this,
      'decideForFork',
    ));
    if ($this->parser
      ->getStream()
      ->next()
      ->getValue() == 'else') {
      $this->parser
        ->getStream()
        ->expect(Twig_Token::BLOCK_END_TYPE);
      $else = $this->parser
        ->subparse(array(
        $this,
        'decideForEnd',
      ), true);
    }
    else {
      $else = null;
    }
    $this->parser
      ->getStream()
      ->expect(Twig_Token::BLOCK_END_TYPE);
    if (count($targets) > 1) {
      $keyTarget = $targets
        ->getNode(0);
      $keyTarget = new Twig_Node_Expression_AssignName($keyTarget
        ->getAttribute('name'), $keyTarget
        ->getLine());
      $valueTarget = $targets
        ->getNode(1);
      $valueTarget = new Twig_Node_Expression_AssignName($valueTarget
        ->getAttribute('name'), $valueTarget
        ->getLine());
    }
    else {
      $keyTarget = new Twig_Node_Expression_AssignName('_key', $lineno);
      $valueTarget = $targets
        ->getNode(0);
      $valueTarget = new Twig_Node_Expression_AssignName($valueTarget
        ->getAttribute('name'), $valueTarget
        ->getLine());
    }
    return new Twig_Node_For($keyTarget, $valueTarget, $seq, $ifexpr, $body, $else, $lineno, $this
      ->getTag());
  }
  public function decideForFork(Twig_Token $token) {
    return $token
      ->test(array(
      'else',
      'endfor',
    ));
  }
  public function decideForEnd(Twig_Token $token) {
    return $token
      ->test('endfor');
  }

  /**
   * Gets the tag name associated with this token parser.
   *
   * @return string The tag name
   */
  public function getTag() {
    return 'for';
  }

}