From fdb4cc7ea5f9ad4af9d9a24611b1ad08531f40f6 Mon Sep 17 00:00:00 2001
From: csharptest <roger@csharptest.net>
Date: Tue, 7 May 2013 16:12:45 -0500
Subject: Adde 'Unsafe' static type in ByteString to allow direct buffer
 manipulation without copying bytes.  Should be used very cautiously as
 modifications to buffers may result in unexpected behavior.

---
 src/ProtocolBuffers/ByteString.cs | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'src')

diff --git a/src/ProtocolBuffers/ByteString.cs b/src/ProtocolBuffers/ByteString.cs
index ea17ca1e..8b7bd06c 100644
--- a/src/ProtocolBuffers/ByteString.cs
+++ b/src/ProtocolBuffers/ByteString.cs
@@ -52,6 +52,30 @@ namespace Google.ProtocolBuffers
 
         private readonly byte[] bytes;
 
+        /// <summary>
+        /// Unsafe operations that can cause IO Failure and/or other catestrophic side-effects.
+        /// </summary>
+        public static class Unsafe
+        {
+            /// <summary>
+            /// Constructs a new ByteString from the given byte array. The array is
+            /// *not* copied, and must not be modified after this constructor is called.
+            /// </summary>
+            public static ByteString FromBytes(byte[] bytes)
+            {
+                return new ByteString(bytes);
+            }
+
+            /// <summary>
+            /// Provides direct, unrestricted access to the bytes contained in this instance.
+            /// You must not modify or resize the byte array returned by this method.
+            /// </summary>
+            public static byte[] GetBuffer(ByteString bytes)
+            {
+                return bytes.bytes;
+            }
+        }
+
         /// <summary>
         /// Internal use only.  Ensure that the provided array is not mutated and belongs to this instance.
         /// </summary>
-- 
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