FOF30\Less\Parser\Parser::guardGroup PHP Метод

    protected function guardGroup(&$guardGroup)
    {
        $s = $this->seek();
        $guardGroup = array();
        while ($this->guard($guard)) {
            $guardGroup[] = $guard;
            if (!$this->literal("and")) {
                break;
            }
        }
        if (count($guardGroup) == 0) {
            $guardGroup = null;
            $this->seek($s);
            return false;
        }
        return true;
    }