/**
* @param nc_search_query_expression $expression
* @return bool
*/
public function expression_has_phrase(nc_search_query_expression $expression)
{
if ($expression instanceof nc_search_query_expression_phrase) {
return true;
}
if ($expression instanceof nc_search_query_expression_composite) {
foreach ($expression->get_items() as $item) {
if ($this->expression_has_phrase($item)) {
return true;
}
// including nc_search_query_expression_phrase
}
}
return false;
}
