* {% block head %}
*
* {% block title %}{% endblock %} - My Webpage
* {% endblock %}
*
*/
final class Twig_TokenParser_Block extends Twig_TokenParser
{
public function parse(Twig_Token $token)
{
$lineno = $token->getLine();
$stream = $this->parser->getStream();
$name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
if ($this->parser->hasBlock($name)) {
throw new Twig_Error_Syntax(sprintf("The block '%s' has already been defined line %d.", $name, $this->parser->getBlock($name)->getTemplateLine()), $stream->getCurrent()->getLine(), $stream->getSourceContext());
}
$this->parser->setBlock($name, $block = new Twig_Node_Block($name, new Twig_Node(array()), $lineno));
$this->parser->pushLocalScope();
$this->parser->pushBlockStack($name);
if ($stream->nextIf(Twig_Token::BLOCK_END_TYPE)) {
$body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
if ($token = $stream->nextIf(Twig_Token::NAME_TYPE)) {
$value = $token->getValue();
if ($value != $name) {
throw new Twig_Error_Syntax(sprintf('Expected endblock for block "%s" (but "%s" given).', $name, $value), $stream->getCurrent()->getLine(), $stream->getSourceContext());
}
}
} else {
$body = new Twig_Node(array(
new Twig_Node_Print($this->parser->getExpressionParser()->parseExpression(), $lineno),
));
}
$stream->expect(Twig_Token::BLOCK_END_TYPE);
$block->setNode('body', $body);
$this->parser->popBlockStack();
$this->parser->popLocalScope();
return new Twig_Node_BlockReference($name, $lineno, $this->getTag());
}
public function decideBlockEnd(Twig_Token $token)
{
return $token->test('endblock');
}
public function getTag()
{
return 'block';
}
}