From 15d063b6f767a7b02ef0ca1f3c568ee120d2f1de Mon Sep 17 00:00:00 2001
From: Andrew Moore <me@andrewmoore.ca>
Date: Wed, 27 Nov 2013 14:35:15 -0500
Subject: [PATCH] Create ExceptionHandlerInterface to allow third party
 exception handlers' to handle fatal errors

---
 src/Symfony/Component/Debug/ErrorHandler.php  |  6 ++---
 .../Component/Debug/ExceptionHandler.php      |  6 ++---
 .../Debug/ExceptionHandlerInterface.php       | 27 +++++++++++++++++++
 3 files changed, 33 insertions(+), 6 deletions(-)
 create mode 100644 src/Symfony/Component/Debug/ExceptionHandlerInterface.php

diff --git a/src/Symfony/Component/Debug/ErrorHandler.php b/src/Symfony/Component/Debug/ErrorHandler.php
index 318c6716e256d..e72e249f7fce7 100644
--- a/src/Symfony/Component/Debug/ErrorHandler.php
+++ b/src/Symfony/Component/Debug/ErrorHandler.php
@@ -155,7 +155,7 @@ function ($row) {
             $exceptionHandler = set_exception_handler('var_dump');
             restore_exception_handler();
 
-            if (is_array($exceptionHandler) && $exceptionHandler[0] instanceof ExceptionHandler) {
+            if (is_array($exceptionHandler) && $exceptionHandler[0] instanceof ExceptionHandlerInterface) {
                 if (self::$stackedErrorLevels) {
                     self::$stackedErrors[] = func_get_args();
 
@@ -263,7 +263,7 @@ public function handleFatal()
         $exceptionHandler = set_exception_handler('var_dump');
         restore_exception_handler();
 
-        if (is_array($exceptionHandler) && $exceptionHandler[0] instanceof ExceptionHandler) {
+        if (is_array($exceptionHandler) && $exceptionHandler[0] instanceof ExceptionHandlerInterface) {
             $this->handleFatalError($exceptionHandler[0], $error);
         }
     }
@@ -284,7 +284,7 @@ protected function getFatalErrorHandlers()
         );
     }
 
-    private function handleFatalError(ExceptionHandler $exceptionHandler, array $error)
+    private function handleFatalError(ExceptionHandlerInterface $exceptionHandler, array $error)
     {
         $level = isset($this->levels[$error['type']]) ? $this->levels[$error['type']] : $error['type'];
         $message = sprintf('%s: %s in %s line %d', $level, $error['message'], $error['file'], $error['line']);
diff --git a/src/Symfony/Component/Debug/ExceptionHandler.php b/src/Symfony/Component/Debug/ExceptionHandler.php
index cd781b5609774..87e260dab180a 100644
--- a/src/Symfony/Component/Debug/ExceptionHandler.php
+++ b/src/Symfony/Component/Debug/ExceptionHandler.php
@@ -29,7 +29,7 @@
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */
-class ExceptionHandler
+class ExceptionHandler implements ExceptionHandlerInterface
 {
     private $debug;
     private $charset;
@@ -57,14 +57,14 @@ public static function register($debug = true)
     }
 
     /**
+     * {@inheritDoc}
+     *
      * Sends a response for the given Exception.
      *
      * If you have the Symfony HttpFoundation component installed,
      * this method will use it to create and send the response. If not,
      * it will fallback to plain PHP functions.
      *
-     * @param \Exception $exception An \Exception instance
-     *
      * @see sendPhpResponse
      * @see createResponse
      */
diff --git a/src/Symfony/Component/Debug/ExceptionHandlerInterface.php b/src/Symfony/Component/Debug/ExceptionHandlerInterface.php
new file mode 100644
index 0000000000000..5ebefcf829e3f
--- /dev/null
+++ b/src/Symfony/Component/Debug/ExceptionHandlerInterface.php
@@ -0,0 +1,27 @@
+<?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\Component\Debug;
+
+/**
+ * An ExceptionHandler does something useful with an exception.
+ *
+ * @author Andrew Moore <me@andrewmoore.ca>
+ */
+interface ExceptionHandlerInterface
+{
+    /**
+     * Handles an exception.
+     *
+     * @param \Exception $exception An \Exception instance
+     */
+    public function handle(\Exception $exception);
+}

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