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

vendor/symfony/validator/Constraints/Uuid.php

@@ -0,0 +1,77 @@
+<?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\Constraints;
+
+use Symfony\Component\Validator\Constraint;
+
+/**
+ * @Annotation
+ *
+ * @author Colin O'Dell <colinodell@gmail.com>
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class Uuid extends Constraint
+{
+    const TOO_SHORT_ERROR = 1;
+    const TOO_LONG_ERROR = 2;
+    const INVALID_CHARACTERS_ERROR = 3;
+    const INVALID_HYPHEN_PLACEMENT_ERROR = 4;
+    const INVALID_VERSION_ERROR = 5;
+    const INVALID_VARIANT_ERROR = 6;
+
+    protected static $errorNames = array(
+        self::TOO_SHORT_ERROR => 'TOO_SHORT_ERROR',
+        self::TOO_LONG_ERROR => 'TOO_LONG_ERROR',
+        self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
+        self::INVALID_HYPHEN_PLACEMENT_ERROR => 'INVALID_HYPHEN_PLACEMENT_ERROR',
+        self::INVALID_VERSION_ERROR => 'INVALID_VERSION_ERROR',
+        self::INVALID_VARIANT_ERROR => 'INVALID_VARIANT_ERROR',
+    );
+
+    // Possible versions defined by RFC 4122
+    const V1_MAC = 1;
+    const V2_DCE = 2;
+    const V3_MD5 = 3;
+    const V4_RANDOM = 4;
+    const V5_SHA1 = 5;
+
+    /**
+     * Message to display when validation fails.
+     *
+     * @var string
+     */
+    public $message = 'This is not a valid UUID.';
+
+    /**
+     * Strict mode only allows UUIDs that meet the formal definition and formatting per RFC 4122.
+     *
+     * Set this to `false` to allow legacy formats with different dash positioning or wrapping characters
+     *
+     * @var bool
+     */
+    public $strict = true;
+
+    /**
+     * Array of allowed versions (see version constants above).
+     *
+     * All UUID versions are allowed by default
+     *
+     * @var int[]
+     */
+    public $versions = array(
+        self::V1_MAC,
+        self::V2_DCE,
+        self::V3_MD5,
+        self::V4_RANDOM,
+        self::V5_SHA1,
+    );
+}