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

vendor/symfony/serializer/Mapping/ClassMetadata.php

@@ -0,0 +1,116 @@
+<?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\Serializer\Mapping;
+
+/**
+ * {@inheritdoc}
+ *
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+class ClassMetadata implements ClassMetadataInterface
+{
+    /**
+     * @var string
+     *
+     * @internal This property is public in order to reduce the size of the
+     *           class' serialized representation. Do not access it. Use
+     *           {@link getName()} instead.
+     */
+    public $name;
+
+    /**
+     * @var AttributeMetadataInterface[]
+     *
+     * @internal This property is public in order to reduce the size of the
+     *           class' serialized representation. Do not access it. Use
+     *           {@link getAttributesMetadata()} instead.
+     */
+    public $attributesMetadata = array();
+
+    /**
+     * @var \ReflectionClass
+     */
+    private $reflClass;
+
+    /**
+     * Constructs a metadata for the given class.
+     *
+     * @param string $class
+     */
+    public function __construct($class)
+    {
+        $this->name = $class;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addAttributeMetadata(AttributeMetadataInterface $attributeMetadata)
+    {
+        $this->attributesMetadata[$attributeMetadata->getName()] = $attributeMetadata;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getAttributesMetadata()
+    {
+        return $this->attributesMetadata;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function merge(ClassMetadataInterface $classMetadata)
+    {
+        foreach ($classMetadata->getAttributesMetadata() as $attributeMetadata) {
+            if (isset($this->attributesMetadata[$attributeMetadata->getName()])) {
+                $this->attributesMetadata[$attributeMetadata->getName()]->merge($attributeMetadata);
+            } else {
+                $this->addAttributeMetadata($attributeMetadata);
+            }
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getReflectionClass()
+    {
+        if (!$this->reflClass) {
+            $this->reflClass = new \ReflectionClass($this->getName());
+        }
+
+        return $this->reflClass;
+    }
+
+    /**
+     * Returns the names of the properties that should be serialized.
+     *
+     * @return string[]
+     */
+    public function __sleep()
+    {
+        return array(
+            'name',
+            'attributesMetadata',
+        );
+    }
+}