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[yaffs-website] / vendor / symfony / config / Resource / SelfCheckingResourceChecker.php

diff --git a/vendor/symfony/config/Resource/SelfCheckingResourceChecker.php b/vendor/symfony/config/Resource/SelfCheckingResourceChecker.php
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+++ b/vendor/symfony/config/Resource/SelfCheckingResourceChecker.php
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+<?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\Config\Resource;
+
+use Symfony\Component\Config\ResourceCheckerInterface;
+
+/**
+ * Resource checker for instances of SelfCheckingResourceInterface.
+ *
+ * As these resources perform the actual check themselves, we can provide
+ * this class as a standard way of validating them.
+ *
+ * @author Matthias Pigulla <mp@webfactory.de>
+ */
+class SelfCheckingResourceChecker implements ResourceCheckerInterface
+{
+    public function supports(ResourceInterface $metadata)
+    {
+        return $metadata instanceof SelfCheckingResourceInterface;
+    }
+
+    public function isFresh(ResourceInterface $resource, $timestamp)
+    {
+        /* @var SelfCheckingResourceInterface $resource */
+        return $resource->isFresh($timestamp);
+    }
+}