コード例 #1
0
ファイル: Kohana.php プロジェクト: nanangsyaifudin/HAC-2012
 /**
  * Loads the controller and initializes it. Runs the pre_controller,
  * post_controller_constructor, and post_controller events. Triggers
  * a system.404 event when the route cannot be mapped to a controller.
  *
  * This method is benchmarked as controller_setup and controller_execution.
  *
  * @return  object  instance of controller
  */
 public static function &instance()
 {
     if (self::$instance === NULL) {
         Benchmark::start(SYSTEM_BENCHMARK . '_controller_setup');
         if (Router::$method[0] === '_') {
             // Do not allow access to hidden methods
             Event::run('system.404');
         }
         // Include the Controller file
         require Router::$controller_path;
         try {
             // Start validation of the controller
             $class = new ReflectionClass(ucfirst(Router::$controller) . '_Controller');
         } catch (ReflectionException $e) {
             // Controller does not exist
             Event::run('system.404');
         }
         if ($class->isAbstract() or IN_PRODUCTION and $class->getConstant('ALLOW_PRODUCTION') == FALSE) {
             // Controller is not allowed to run in production
             Event::run('system.404');
         }
         // Run system.pre_controller
         Event::run('system.pre_controller');
         // Begin benchmark for the controller
         Benchmark::f_start(ucfirst(Router::$controller) . '_Controller');
         // Create a new controller instance
         $controller = $class->newInstance();
         // End benchmark for the controller
         Benchmark::f_stop(ucfirst(Router::$controller) . '_Controller');
         // Controller constructor has been executed
         Event::run('system.post_controller_constructor');
         try {
             // Load the controller method
             $method = $class->getMethod(Router::$method);
             if ($method->isProtected() or $method->isPrivate()) {
                 // Do not attempt to invoke protected methods
                 throw new ReflectionException('protected controller method');
             }
             // Default arguments
             $arguments = Router::$arguments;
         } catch (ReflectionException $e) {
             // Use __call instead
             $method = $class->getMethod('__call');
             // Use arguments in __call format
             $arguments = array(Router::$method, Router::$arguments);
         }
         // Stop the controller setup benchmark
         Benchmark::stop(SYSTEM_BENCHMARK . '_controller_setup');
         // Start the controller execution benchmark
         Benchmark::start(SYSTEM_BENCHMARK . '_controller_execution');
         // Execute the controller method
         $method->invokeArgs($controller, $arguments);
         // Controller method has been executed
         Event::run('system.post_controller');
         // Stop the controller execution benchmark
         Benchmark::stop(SYSTEM_BENCHMARK . '_controller_execution');
     }
     return self::$instance;
 }