* {% endshowblock %} * * @package october\cms * @author Alexey Bobkov, Samuel Georges */ class PlaceholderTokenParser extends Twig_TokenParser { /** * Parses a token and returns a node. * * @param Twig_Token $token A Twig_Token instance * @return Twig_Node A Twig_Node instance */ public function parse(Twig_Token $token) { $stream = $this->parser->getStream(); $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue(); $body = null; $params = []; if ($stream->test(Twig_Token::NAME_TYPE, 'default')) { $stream->next(); $params = $this->loadParams($stream); $body = $this->parser->subparse([$this, 'decidePlaceholderEnd'], true); $stream->expect(Twig_Token::BLOCK_END_TYPE); } else { $params = $this->loadParams($stream); } return new PlaceholderNode($name, $params, $body, $token->getLine(), $this->getTag()); } public function decidePlaceholderEnd(Twig_Token $token) { return $token->test('endplaceholder'); } protected function loadParams($stream) { $params = []; $end = false; while (!$end) { $current = $stream->next(); switch ($current->getType()) { case Twig_Token::NAME_TYPE: $paramName = $current->getValue(); $stream->expect(Twig_Token::OPERATOR_TYPE, '='); $current = $stream->next(); $params[$paramName] = $current->getValue(); break; case Twig_Token::BLOCK_END_TYPE: $end = true; break; default: throw new Twig_Error_Syntax( sprintf('Invalid syntax in the placeholder tag. Line %s', $lineno), $stream->getCurrent()->getLine(), $stream->getFilename() ); break; } } return $params; } /** * Gets the tag name associated with this token parser. * * @return string The tag name */ public function getTag() { return 'placeholder'; } }