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<?php
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/*
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* This file is part of Twig.
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*
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* (c) 2009 Fabien Potencier
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* (c) 2009 Armin Ronacher
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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/**
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* Extends a template by another one.
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*
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* <pre>
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* {% extends "base.html" %}
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* </pre>
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*/
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class Twig_TokenParser_Extends extends Twig_TokenParser
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{
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/**
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* Parses a token and returns a node.
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*
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* @param Twig_Token $token A Twig_Token instance
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*
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* @return Twig_NodeInterface A Twig_NodeInterface instance
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*/
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public function parse(Twig_Token $token)
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{
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if (!$this->parser->isMainScope()) {
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throw new Twig_Error_Syntax('Cannot extend from a block', $token->getLine(), $this->parser->getFilename());
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}
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if (null !== $this->parser->getParent()) {
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throw new Twig_Error_Syntax('Multiple extends tags are forbidden', $token->getLine(), $this->parser->getFilename());
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}
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$this->parser->setParent($this->parser->getExpressionParser()->parseExpression());
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$this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
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}
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/**
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* Gets the tag name associated with this token parser.
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*
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* @return string The tag name
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*/
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public function getTag()
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{
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return 'extends';
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}
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}
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