Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/symfony/validator/Mapping/Cache/DoctrineCache.php

@@ -0,0 +1,69 @@
+<?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\Validator\Mapping\Cache;
+
+use Doctrine\Common\Cache\Cache;
+use Symfony\Component\Validator\Mapping\ClassMetadata;
+
+/**
+ * Adapts a Doctrine cache to a CacheInterface.
+ *
+ * @author Florian Voutzinos <florian@voutzinos.com>
+ */
+final class DoctrineCache implements CacheInterface
+{
+    private $cache;
+
+    /**
+     * Creates a new Doctrine cache.
+     *
+     * @param Cache $cache The cache to adapt
+     */
+    public function __construct(Cache $cache)
+    {
+        $this->cache = $cache;
+    }
+
+    /**
+     * Sets the cache to adapt.
+     *
+     * @param Cache $cache The cache to adapt
+     */
+    public function setCache(Cache $cache)
+    {
+        $this->cache = $cache;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function has($class)
+    {
+        return $this->cache->contains($class);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function read($class)
+    {
+        return $this->cache->fetch($class);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function write(ClassMetadata $metadata)
+    {
+        $this->cache->save($metadata->getClassName(), $metadata);
+    }
+}