public function parse($query, $parameters = array())
{
if (strpos($query, '?') !== false && strpos($query, ':') !== false) {
throw new \InvalidArgumentException('Cannot mixed named and regular placeholders.');
}
$this->_lexer->reset();
$this->_lexer->setInput($query);
$query = $this->QueryLanguage($parameters);
return $query;
}