/**
* Parse next filter token.
*
* @return FilterNode
*/
protected function parseFilter()
{
$block = null;
$token = $this->expectTokenType('filter');
$attributes = $this->acceptTokenType('attributes');
if ('text' === $this->lexer->predictToken(2)->type) {
$block = $this->parseTextBlock();
} else {
$block = $this->parseBlock();
}
$node = new FilterNode($token->value, null !== $attributes ? $attributes->attributes : array(), $this->lexer->getCurrentLine());
$node->setBlock($block);
return $node;
}
/**
* 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));
}