Jade\Compiler\SubCodeHandler::handleRecursion PHP Метод

    public function handleRecursion(&$result)
    {
        $getMiddleString = $this->getMiddleString();
        $codeHandler = $this->codeHandler;
        return function ($arg, $name = '') use(&$result, $codeHandler, $getMiddleString) {
            list($start, $end) = $arg;
            $str = trim($getMiddleString($start, $end));
            if (!strlen($str)) {
                return '';
            }
            $innerCode = $codeHandler->innerCode($str, $name);
            if (count($innerCode) > 1) {
                $result = array_merge($result, array_slice($innerCode, 0, -1));
                return array_pop($innerCode);
            }
            return $innerCode[0];
        };
    }