--- /dev/null
+<?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;
+
+/**
+ * A pass to automatically process extensions if they implement
+ * CompilerPassInterface.
+ *
+ * @author Wouter J <wouter@wouterj.nl>
+ */
+class ExtensionCompilerPass implements CompilerPassInterface
+{
+ /**
+ * {@inheritdoc}
+ */
+ public function process(ContainerBuilder $container)
+ {
+ foreach ($container->getExtensions() as $extension) {
+ if (!$extension instanceof CompilerPassInterface) {
+ continue;
+ }
+
+ $extension->process($container);
+ }
+ }
+}