decoupled the exception handler from HttpKernelServiceProvider

src/Silex/Application.php

@@ -30,6 +30,7 @@ use Symfony\Component\HttpFoundation\JsonResponse;
 use Silex\Api\BootableProviderInterface;
 use Silex\Api\EventListenerProviderInterface;
 use Silex\Api\ControllerProviderInterface;
+use Silex\Provider\ExceptionHandlerServiceProvider;
 use Silex\Provider\RoutingServiceProvider;
 use Silex\Provider\HttpKernelServiceProvider;
 
@@ -67,6 +68,7 @@ class Application extends Container implements HttpKernelInterface, TerminableIn
 
         $this->register(new HttpKernelServiceProvider());
         $this->register(new RoutingServiceProvider());
+        $this->register(new ExceptionHandlerServiceProvider());
 
         foreach ($values as $key => $value) {
             $this[$key] = $value;

src/Silex/ExceptionHandler.php

@@ -17,7 +17,7 @@ use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
 use Symfony\Component\HttpKernel\KernelEvents;
 
 /**
- * Defaults exception handler.
+ * Default exception handler.
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */

src/Silex/Provider/ExceptionHandlerServiceProvider.php

+<?php
+
+namespace Silex\Provider;
+
+use Pimple\Container;
+use Pimple\ServiceProviderInterface;
+use Silex\Api\EventListenerProviderInterface;
+use Silex\ExceptionHandler;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+
+class ExceptionHandlerServiceProvider implements ServiceProviderInterface, EventListenerProviderInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function register(Container $app)
+    {
+        $app['exception_handler'] = function ($app) {
+            return new ExceptionHandler($app['debug']);
+        };
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function subscribe(Container $app, EventDispatcherInterface $dispatcher)
+    {
+        if (isset($app['exception_handler'])) {
+            $dispatcher->addSubscriber($app['exception_handler']);
+        }
+    }
+}

src/Silex/Provider/HttpKernelServiceProvider.php

@@ -10,7 +10,6 @@ use Silex\ControllerResolver;
 use Silex\EventListener\ConverterListener;
 use Silex\EventListener\MiddlewareListener;
 use Silex\EventListener\StringToResponseListener;
-use Silex\ExceptionHandler;
 use Symfony\Component\EventDispatcher\EventDispatcher;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 use Symfony\Component\HttpFoundation\RequestStack;
@@ -24,10 +23,6 @@ class HttpKernelServiceProvider implements ServiceProviderInterface, EventListen
      */
     public function register(Container $app)
     {
-        $app['exception_handler'] = function ($app) {
-            return new ExceptionHandler($app['debug']);
-        };
-
         $app['resolver'] = function ($app) {
             return new ControllerResolver($app, $app['logger']);
         };
@@ -47,7 +42,6 @@ class HttpKernelServiceProvider implements ServiceProviderInterface, EventListen
         $app['callback_resolver'] = function ($app) {
             return new CallbackResolver($app);
         };
-
     }
 
     /**
@@ -55,10 +49,6 @@ class HttpKernelServiceProvider implements ServiceProviderInterface, EventListen
      */
     public function subscribe(Container $app, EventDispatcherInterface $dispatcher)
     {
-        if (isset($app['exception_handler'])) {
-            $dispatcher->addSubscriber($app['exception_handler']);
-        }
-
         $dispatcher->addSubscriber(new ResponseListener($app['charset']));
         $dispatcher->addSubscriber(new MiddlewareListener($app));
         $dispatcher->addSubscriber(new ConverterListener($app['routes'], $app['callback_resolver']));