Roller\MatchedRoute::run PHP Method

    public function run()
    {
        if (($cb = $this->getCallback()) === null) {
            throw new RouteException('callback attribute is not defined or empty.', $this->route);
        }
        /** constructor arguments **/
        $args = $this->route['args'];
        // validation action method prototype
        $vars = $this->getVars();
        // reflection parameters of the function or method
        $rps = $this->initCallback($cb, $args);
        // check callback function
        if (!is_callable($cb)) {
            throw new RouteException('This route callback is not a valid callback.', $this->route);
        }
        // get relection method parameter prototype for checking...
        // and create arguments array
        $arguments = array();
        foreach ($rps as $param) {
            $n = $param->getName();
            if (isset($vars[$n])) {
                $arguments[] = $vars[$n];
            } else {
                if (isset($this->route['default'][$n]) && ($default = $this->route['default'][$n])) {
                    $arguments[] = $default;
                } else {
                    if (!$param->isOptional() && !$param->allowsNull) {
                        throw new RouteException('parameter is not defined.', $this->route);
                    }
                }
            }
        }
        if ($this->controller && is_a($this->controller, 'Roller\\Controller')) {
            $this->controller->route = $this;
            $this->controller->router = $this->router;
            // runWrapper method runs: before, run, after, finalize method
            return $this->controller->runWrapper($cb, $arguments);
        } else {
            return call_user_func_array($cb, $arguments);
        }
    }