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<?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.
*/
/**
* Imports blocks defined in another template into the current template.
*
* <pre>
* {% extends "base.html" %}
*
* {% use "blocks.html" %}
*
* {% block title %}{% endblock %}
* {% block content %}{% endblock %}
* </pre>
*
* @see http://www.twig-project.org/doc/templates.html#horizontal-reuse for details.
*/
class Twig_TokenParser_Use 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)
{
$template = $this->parser->getExpressionParser()->parseExpression();
$stream = $this->parser->getStream();
if (!$template instanceof Twig_Node_Expression_Constant) {
throw new Twig_Error_Syntax('The template references in a "use" statement must be a string.', $stream->getCurrent()->getLine(), $stream->getFilename());
}
$targets = array();
if ($stream->test('with')) {
$stream->next();
do {
$name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
$alias = $name;
if ($stream->test('as')) {
$stream->next();
$alias = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
}
$targets[$name] = new Twig_Node_Expression_Constant($alias, -1);
if (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ',')) {
break;
}
$stream->next();
} while (true);
}
$stream->expect(Twig_Token::BLOCK_END_TYPE);
$this->parser->addTrait(new Twig_Node(array('template' => $template, 'targets' => new Twig_Node($targets))));
}
/**
* Gets the tag name associated with this token parser.
*
* @return string The tag name
*/
public function getTag()
{
return 'use';
}
}
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