Parses a token and returns a node.
Twig_Token $token A Twig_Token instance:
Twig_NodeInterface A Twig_NodeInterface instance
Overrides Twig_TokenParserInterface::parse
public function parse(Twig_Token $token) {
if (!$this->parser
->isMainScope()) {
throw new Twig_Error_Syntax('Cannot extend from a block', $token
->getLine());
}
if (null !== $this->parser
->getParent()) {
throw new Twig_Error_Syntax('Multiple extends tags are forbidden', $token
->getLine());
}
$this->parser
->setParent($this->parser
->getExpressionParser()
->parseExpression());
$this->parser
->getStream()
->expect(Twig_Token::BLOCK_END_TYPE);
return null;
}