Jade\Compiler\SubCodeHandler::scanSeparators PHP Method

    protected function scanSeparators(&$separators, &$result)
    {
        $handleNested = $this->handleNestedExpression($result);
        return function (&$arguments, $open, $close) use(&$separators, $handleNested) {
            $count = 1;
            do {
                $start = current($separators);
                do {
                    $curr = next($separators);
                    if ($curr[0] === $open) {
                        $count++;
                    }
                    if ($curr[0] === $close) {
                        $count--;
                    }
                } while ($curr[0] !== null && $count > 0 && $curr[0] !== ',');
                $handleNested($arguments, $start, current($separators));
            } while ($curr !== false && $count > 0);
            return $count;
        };
    }