1 files changed, 115 insertions, 0 deletions
diff --git a/csharp/src/ProtocolBuffers/Descriptors/DescriptorBase.cs b/csharp/src/ProtocolBuffers/Descriptors/DescriptorBase.cs
new file mode 100644
index 00000000..59006f80
--- /dev/null
+++ b/csharp/src/ProtocolBuffers/Descriptors/DescriptorBase.cs
@@ -0,0 +1,115 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// http://github.com/jskeet/dotnet-protobufs/
+// Original C++/Java/Python code:
+// http://code.google.com/p/protobuf/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+using Google.ProtocolBuffers.DescriptorProtos;
+
+namespace Google.ProtocolBuffers.Descriptors
+{
+    /// <summary>
+    /// Base class for nearly all descriptors, providing common functionality.
+    /// </summary>
+    /// <typeparam name="TProto">Type of the protocol buffer form of this descriptor</typeparam>
+    /// <typeparam name="TOptions">Type of the options protocol buffer for this descriptor</typeparam>
+    public abstract class DescriptorBase<TProto, TOptions> : IDescriptor<TProto>
+        where TProto : IMessage, IDescriptorProto<TOptions>
+    {
+        private TProto proto;
+        private readonly FileDescriptor file;
+        private readonly string fullName;
+
+        protected DescriptorBase(TProto proto, FileDescriptor file, string fullName)
+        {
+            this.proto = proto;
+            this.file = file;
+            this.fullName = fullName;
+        }
+
+        internal virtual void ReplaceProto(TProto newProto)
+        {
+            this.proto = newProto;
+        }
+
+        protected static string ComputeFullName(FileDescriptor file, MessageDescriptor parent, string name)
+        {
+            if (parent != null)
+            {
+                return parent.FullName + "." + name;
+            }
+            if (file.Package.Length > 0)
+            {
+                return file.Package + "." + name;
+            }
+            return name;
+        }
+
+        IMessage IDescriptor.Proto
+        {
+            get { return proto; }
+        }
+
+        /// <summary>
+        /// Returns the protocol buffer form of this descriptor.
+        /// </summary>
+        public TProto Proto
+        {
+            get { return proto; }
+        }
+
+        public TOptions Options
+        {
+            get { return proto.Options; }
+        }
+
+        /// <summary>
+        /// The fully qualified name of the descriptor's target.
+        /// </summary>
+        public string FullName
+        {
+            get { return fullName; }
+        }
+
+        /// <summary>
+        /// The brief name of the descriptor's target.
+        /// </summary>
+        public string Name
+        {
+            get { return proto.Name; }
+        }
+
+        /// <value>
+        /// The file this descriptor was declared in.
+        /// </value>
+        public FileDescriptor File
+        {
+            get { return file; }
+        }
+    }
+}
+\ No newline at end of file