php namespace System class Router private registry private path privat

<?php
namespace System;

class Router 
{
    private $registry;
    private $path;
    private $args = [];
    
	public function show404 ($message)
	{
	exit($message);
	}
    
    function __construct($registry) 
    {
        $this->registry = $registry;
    }
    
    function setPath($path)
    {
        if (!is_dir($path))
        {
            throw new \Exception ('Некорректный путь к контроллерам: `'.$path.'`');
        }
        
        $this->path = $path;
    }
    
    private function getController(&$file, &$controller, &$action, &$args)
    {
        $route = (empty($_GET['route'])) ? '' : $_GET['route'];

        if (empty($route)) 
        { 
            $route = 'index'; 
        };

        $route = trim($route, '/\\');
        $parts = explode('/', $route);
        $cmd_path = $this->path;

        foreach ($parts as $part)
        {
            $fullpath = $cmd_path . $part;
            
            if (is_dir($fullpath)) 
            {
                $cmd_path .= $part . DIRSEP;
                array_shift($parts);
                continue;
            }

            if (is_file($fullpath.'.php'))
            {
                $controller = $part;
                array_shift($parts);
                break;
            }
        };


        if (empty($controller)) 
        { 
            $controller = 'index'; 
        };
        
        $action = array_shift($parts);

        if (empty($action)) 
        { 
            $action = 'index';
        };


        $file = $cmd_path . $controller . '.php';
        $args = $parts;
    }
    
    public function delegate ()
    {
        $this->getController($file, $controller, $action, $args);
        
        if (!is_readable($file))
        {
           $this->show404('ERROR !is_readable');
        }
        
        include_once ($file);
        $class = 'Controller_' . $controller;
        $controller = new $class($this->registry);

		//Вот тут интерпретатор выебывается
		/*********************************/
        if (is_callable(array($controller, $action)))
        {
            $this->show404('ERROR !is_callable');
        }
        /*********************************/
		
        $controller->$action();

    }
}