<?php

/*
 * This file is part of Twig.
 *
 * (c) 2011 Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * Evaluates an expression, discarding the returned value.
 */
class Twig_TokenParser_Do 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)
  {
    $expr = $this->parser->getExpressionParser()->parseExpression();

    $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);

    return new Twig_Node_Do($expr, $token->getLine(), $this->getTag());
  }

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