protobuf/csharp/ProtocolBuffers/ExtensionInfo.cs

// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.
// http://code.google.com/p/protobuf/
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
using Google.ProtocolBuffers.Descriptors;

namespace Google.ProtocolBuffers
{
  public sealed class ExtensionInfo {
    /// <summary>
    /// The extension's descriptor
    /// </summary>
    public FieldDescriptor Descriptor { get; private set; }

    /// <summary>
    /// A default instance of the extensions's type, if it has a message type,
    /// or null otherwise.
    /// </summary>
    public IMessage DefaultInstance { get; private set; }

    internal ExtensionInfo(FieldDescriptor descriptor) : this(descriptor, null) {
    }

    internal ExtensionInfo(FieldDescriptor descriptor, IMessage defaultInstance) {
      Descriptor = descriptor;
      DefaultInstance = defaultInstance;
    }
  }
}