diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Bundle/FrameworkBundle/Debug/TraceableEventDispatcher.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Bundle/FrameworkBundle/Debug/TraceableEventDispatcher.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,202 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bundle\FrameworkBundle\Debug;
+
+use Symfony\Bundle\FrameworkBundle\ContainerAwareEventDispatcher;
+use Symfony\Component\HttpKernel\Log\LoggerInterface;
+use Symfony\Component\HttpKernel\Debug\TraceableEventDispatcherInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\EventDispatcher\Event;
+
+/**
+ * Extends the ContainerAwareEventDispatcher to add some debugging tools.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class TraceableEventDispatcher extends ContainerAwareEventDispatcher implements TraceableEventDispatcherInterface
+{
+    private $logger;
+    private $called;
+
+    /**
+     * Constructor.
+     *
+     * @param ContainerInterface $container A ContainerInterface instance
+     * @param LoggerInterface    $logger    A LoggerInterface instance
+     */
+    public function __construct(ContainerInterface $container, LoggerInterface $logger = null)
+    {
+        parent::__construct($container);
+
+        $this->logger = $logger;
+        $this->called = array();
+    }
+
+    /**
+     * {@inheritDoc}
+     *
+     * @throws \RuntimeException if the listener method is not callable
+     */
+    public function addListener($eventName, $listener, $priority = 0)
+    {
+        if (!is_callable($listener)) {
+            if (is_string($listener)) {
+                $typeDefinition = '[string] '.$listener;
+            } elseif (is_array($listener)) {
+                $typeDefinition = '[array] '.(is_object($listener[0]) ? get_class($listener[0]) : $listener[0]).'::'.$listener[1];
+            } elseif (is_object($listener)) {
+                $typeDefinition = '[object] '.get_class($listener);
+            } else {
+                $typeDefinition = '[?] '.var_export($listener, true);
+            }
+
+            throw new \RuntimeException(sprintf('The given callback (%s) for event "%s" is not callable.', $typeDefinition, $eventName));
+        }
+
+        parent::addListener($eventName, $listener, $priority);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    protected function doDispatch($listeners, $eventName, Event $event)
+    {
+        foreach ($listeners as $listener) {
+            $info = $this->getListenerInfo($listener, $eventName);
+
+            if (null !== $this->logger) {
+                $this->logger->debug(sprintf('Notified event "%s" to listener "%s".', $eventName, $info['pretty']));
+            }
+
+            $this->called[$eventName.'.'.$info['pretty']] = $info;
+
+            call_user_func($listener, $event);
+
+            if ($event->isPropagationStopped()) {
+                if (null !== $this->logger) {
+                    $this->logger->debug(sprintf('Listener "%s" stopped propagation of the event "%s".', $info['pretty'], $eventName));
+
+                    $skippedListeners = $this->getListeners($eventName);
+                    $skipped = false;
+
+                    foreach ($skippedListeners as $skippedListener) {
+                        if ($skipped) {
+                            if (is_object($skippedListener)) {
+                                $typeDefinition = get_class($skippedListener);
+                            } elseif (is_array($skippedListener)) {
+                                if (is_object($skippedListener[0])) {
+                                    $typeDefinition = get_class($skippedListener[0]);
+                                } else {
+                                    $typeDefinition = implode('::', $skippedListener);
+                                }
+                            } else {
+                                $typeDefinition = $skippedListener;
+                            }
+                            $this->logger->debug(sprintf('Listener "%s" was not called for event "%s".', $typeDefinition, $eventName));
+                        }
+
+                        if ($skippedListener === $listener) {
+                            $skipped = true;
+                        }
+                    }
+                }
+
+                break;
+            }
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getCalledListeners()
+    {
+        return $this->called;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getNotCalledListeners()
+    {
+        $notCalled = array();
+
+        foreach ($this->getListeners() as $name => $listeners) {
+            foreach ($listeners as $listener) {
+                $info = $this->getListenerInfo($listener, $name);
+                if (!isset($this->called[$name.'.'.$info['pretty']])) {
+                    $notCalled[$name.'.'.$info['pretty']] = $info;
+                }
+            }
+        }
+
+        return $notCalled;
+    }
+
+    /**
+     * Returns information about the listener
+     *
+     * @param object $listener  The listener
+     * @param string $eventName The event name
+     *
+     * @return array Informations about the listener
+     */
+    private function getListenerInfo($listener, $eventName)
+    {
+        $info = array('event' => $eventName);
+        if ($listener instanceof \Closure) {
+            $info += array(
+                'type' => 'Closure',
+                'pretty' => 'closure'
+            );
+        } elseif (is_string($listener)) {
+            try {
+                $r = new \ReflectionFunction($listener);
+                $file = $r->getFileName();
+                $line = $r->getStartLine();
+            } catch (\ReflectionException $e) {
+                $file = null;
+                $line = null;
+            }
+            $info += array(
+                'type'  => 'Function',
+                'function' => $listener,
+                'file'  => $file,
+                'line'  => $line,
+                'pretty' => $listener,
+            );
+        } elseif (is_array($listener) || (is_object($listener) && is_callable($listener))) {
+            if (!is_array($listener)) {
+                $listener = array($listener, '__invoke');
+            }
+            $class = get_class($listener[0]);
+            try {
+                $r = new \ReflectionMethod($class, $listener[1]);
+                $file = $r->getFileName();
+                $line = $r->getStartLine();
+            } catch (\ReflectionException $e) {
+                $file = null;
+                $line = null;
+            }
+            $info += array(
+                'type'  => 'Method',
+                'class' => $class,
+                'method' => $listener[1],
+                'file'  => $file,
+                'line'  => $line,
+                'pretty' => $class.'::'.$listener[1],
+            );
+        }
+
+        return $info;
+    }
+}