/** * Dump filter node. * * @param FilterNode $node filter node * @param integer $level indentation level * * @return string */ protected function dumpFilter(FilterNode $node, $level = 0) { if (!isset($this->filters[$node->getName()])) { throw new Exception(sprintf('Filter with alias "%s" is not registered.', $node->getName())); } $text = ''; if ($node->getBlock()) { $text = $this->dumpNode($node->getBlock(), $level + 1); } return $this->filters[$node->getName()]->filter($text, $node->getAttributes(), str_repeat(' ', $level)); }