--- /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\Config;
+
+use Symfony\Component\Config\Resource\ResourceInterface;
+use Symfony\Component\Config\ResourceCheckerInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * @author Maxime Steinhausser <maxime.steinhausser@gmail.com>
+ */
+class ContainerParametersResourceChecker implements ResourceCheckerInterface
+{
+ /** @var ContainerInterface */
+ private $container;
+
+ public function __construct(ContainerInterface $container)
+ {
+ $this->container = $container;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function supports(ResourceInterface $metadata)
+ {
+ return $metadata instanceof ContainerParametersResource;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function isFresh(ResourceInterface $resource, $timestamp)
+ {
+ foreach ($resource->getParameters() as $key => $value) {
+ if (!$this->container->hasParameter($key) || $this->container->getParameter($key) !== $value) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+}