diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Component/DependencyInjection/Compiler/MergeExtensionConfigurationPass.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Component/DependencyInjection/Compiler/MergeExtensionConfigurationPass.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,51 @@
+<?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\DependencyInjection\Compiler;
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+/**
+ * Merges extension configs into the container builder
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class MergeExtensionConfigurationPass implements CompilerPassInterface
+{
+    /**
+     * {@inheritDoc}
+     */
+    public function process(ContainerBuilder $container)
+    {
+        $parameters = $container->getParameterBag()->all();
+        $definitions = $container->getDefinitions();
+        $aliases = $container->getAliases();
+
+        foreach ($container->getExtensions() as $name => $extension) {
+            if (!$config = $container->getExtensionConfig($name)) {
+                // this extension was not called
+                continue;
+            }
+            $config = $container->getParameterBag()->resolveValue($config);
+
+            $tmpContainer = new ContainerBuilder($container->getParameterBag());
+            $tmpContainer->addObjectResource($extension);
+
+            $extension->load($config, $tmpContainer);
+
+            $container->merge($tmpContainer);
+        }
+
+        $container->addDefinitions($definitions);
+        $container->addAliases($aliases);
+        $container->getParameterBag()->add($parameters);
+    }
+}