LMongo\Query\Builder::compileWheres PHP Метод

    public function compileWheres(Builder $query)
    {
        $wheres = array();
        foreach ($query->wheres as $where) {
            if ('first' == $where['logic']) {
                $first = $where;
                //We'll handle this later
                continue;
            }
            $method = "compileWhere{$where['type']}";
            $wheres[$where['logic']][] = $query->{$method}($query, $where);
        }
        //Handle first item
        if (isset($first)) {
            $method = "compileWhere{$first['type']}";
            $where = $query->{$method}($query, $first);
            if (1 >= count($wheres)) {
                $key = key($wheres) ?: '$and';
                isset($wheres[$key]) or $wheres[$key] = array();
                array_unshift($wheres[$key], $where);
            } else {
                throw new \Exception('More then one logical operator found on root');
            }
        }
        return $wheres;
    }