--- /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\Extension\Extension as BaseExtension;
+
+/**
+ * Allow adding classes to the class cache.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+abstract class Extension extends BaseExtension
+{
+ private $classes = array();
+
+ /**
+ * Gets the classes to cache.
+ *
+ * @return array An array of classes
+ */
+ public function getClassesToCompile()
+ {
+ return $this->classes;
+ }
+
+ /**
+ * Adds classes to the class cache.
+ *
+ * @param array $classes An array of classes
+ */
+ public function addClassesToCompile(array $classes)
+ {
+ $this->classes = array_merge($this->classes, $classes);
+ }
+}