From 6c1fe6ea3e4e3915fc4164c43230210f9a0ac24f Mon Sep 17 00:00:00 2001
From: Jon Skeet <jonskeet@google.com>
Date: Tue, 23 Jun 2015 11:54:19 +0100
Subject: Implement Clone.

Fixes issue #527.
---
 csharp/src/ProtocolBuffers/IMessage.cs | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'csharp/src/ProtocolBuffers/IMessage.cs')

diff --git a/csharp/src/ProtocolBuffers/IMessage.cs b/csharp/src/ProtocolBuffers/IMessage.cs
index 9c2a2d85..32dfcaff 100644
--- a/csharp/src/ProtocolBuffers/IMessage.cs
+++ b/csharp/src/ProtocolBuffers/IMessage.cs
@@ -93,4 +93,22 @@ namespace Google.Protobuf
         /// <param name="message">The message to merge with this one. Must not be null.</param>
         void MergeFrom(T message);
     }
+
+    /// <summary>
+    /// Generic interface for a deeply cloneable type.
+    /// <summary>
+    /// <remarks>
+    /// In practice, all generated messages implement this interface.
+    /// However, due to the type constraint on <c>T</c> in <see cref="IMessage{T}"/>,
+    /// it is simpler to keep this as a separate interface.
+    /// </remarks>
+    /// <typeparam name="T">The type itself, returned by the <see cref="Clone"/> method.</typeparam>
+    public interface IDeepCloneable<T>
+    {
+        /// <summary>
+        /// Creates a deep clone of this object.
+        /// </summary>
+        /// <returns>A deep clone of this object.</returns>
+        T Clone();
+    }
 }
\ No newline at end of file
-- 
cgit v1.2.3