<?php

/*
 * This file is part of Twig.
 *
 * (c) 2010 Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * Remove whitespaces between HTML tags.
 *
 * <pre>
 * {% spaceless %}
 *      <div>
 *          <strong>foo</strong>
 *      </div>
 * {% endspaceless %}
 *
 * {# output will be <div><strong>foo</strong></div> #}
 * </pre>
 */
class Twig_TokenParser_Spaceless 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();

    $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
    $body = $this->parser->subparse([$this, 'decideSpacelessEnd'], true);
    $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);

    return new Twig_Node_Spaceless($body, $lineno, $this->getTag());
  }

  public function decideSpacelessEnd(Twig_Token $token)
  {
    return $token->test('endspaceless');
  }

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