--- /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\HttpKernel\DependencyInjection;
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+/**
+ * This extension sub-class provides first-class integration with the
+ * Config/Definition Component.
+ *
+ * You can use this as base class if
+ *
+ * a) you use the Config/Definition component for configuration,
+ * b) your configuration class is named "Configuration", and
+ * c) the configuration class resides in the DependencyInjection sub-folder.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+abstract class ConfigurableExtension extends Extension
+{
+ /**
+ * {@inheritdoc}
+ */
+ final public function load(array $configs, ContainerBuilder $container)
+ {
+ $this->loadInternal($this->processConfiguration($this->getConfiguration($configs, $container), $configs), $container);
+ }
+
+ /**
+ * Configures the passed container according to the merged configuration.
+ *
+ * @param array $mergedConfig
+ * @param ContainerBuilder $container
+ */
+ abstract protected function loadInternal(array $mergedConfig, ContainerBuilder $container);
+}