<?php

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

/**
 * Defines a macro.
 *
 * <pre>
 * {% macro input(name, value, type, size) %}
 *    <input type="{{ type|default('text') }}" name="{{ name }}" value="{{ value|e }}" size="{{ size|default(20) }}" />
 * {% endmacro %}
 * </pre>
 *
 * @final
 */
class Twig_SupTwgSgg_TokenParser_Macro extends Twig_SupTwgSgg_TokenParser
{
  public function parse(Twig_SupTwgSgg_Token $token)
  {
    $lineno = $token->getLine();
    $stream = $this->parser->getStream();
    $name = $stream->expect(Twig_SupTwgSgg_Token::NAME_TYPE)->getValue();

    $arguments = $this->parser->getExpressionParser()->parseArguments(true, true);

    $stream->expect(Twig_SupTwgSgg_Token::BLOCK_END_TYPE);
    $this->parser->pushLocalScope();
    $body = $this->parser->subparse([$this, 'decideBlockEnd'], true);
    if ($token = $stream->nextIf(Twig_SupTwgSgg_Token::NAME_TYPE)) {
      $value = $token->getValue();

      if ($value != $name) {
        throw new Twig_SupTwgSgg_Error_Syntax(sprintf('Expected endmacro for macro "%s" (but "%s" given).', $name, $value), $stream->getCurrent()->getLine(), $stream->getSourceContext());
      }
    }
    $this->parser->popLocalScope();
    $stream->expect(Twig_SupTwgSgg_Token::BLOCK_END_TYPE);

    $this->parser->setMacro($name, new Twig_SupTwgSgg_Node_Macro($name, new Twig_SupTwgSgg_Node_Body([$body]), $arguments, $lineno, $this->getTag()));
  }

  public function decideBlockEnd(Twig_SupTwgSgg_Token $token)
  {
    return $token->test('endmacro');
  }

  public function getTag()
  {
    return 'macro';
  }
}
