Moved cache drivers outside core to extensions (plugins)

plugins/cache-redis/Predis/Response/ServerException.php

@@ -0,0 +1,44 @@
+<?php
+
+/*
+ * This file is part of the Predis package.
+ *
+ * (c) Daniele Alessandri <suppakilla@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Predis\Response;
+
+use Predis\PredisException;
+
+/**
+ * Exception class that identifies server-side Redis errors.
+ *
+ * @author Daniele Alessandri <suppakilla@gmail.com>
+ */
+class ServerException extends PredisException implements ErrorInterface
+{
+    /**
+     * Gets the type of the error returned by Redis.
+     *
+     * @return string
+     */
+    public function getErrorType()
+    {
+        list($errorType) = explode(' ', $this->getMessage(), 2);
+
+        return $errorType;
+    }
+
+    /**
+     * Converts the exception to an instance of Predis\Response\Error.
+     *
+     * @return Error
+     */
+    public function toErrorResponse()
+    {
+        return new Error($this->getMessage());
+    }
+}