#region Copyright notice and license | |
// Protocol Buffers - Google's data interchange format | |
// Copyright 2015 Google Inc. All rights reserved. | |
// https://developers.google.com/protocol-buffers/ | |
// | |
// 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, | |
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
#endregion | |
namespace Google.Protobuf.FieldAccess | |
{ | |
// TODO(jonskeet): Add "new" oneof API support | |
/// <summary> | |
/// Access for an oneof | |
/// </summary> | |
internal class OneofAccessor<TMessage> where TMessage : IMessage<TMessage> | |
{ | |
/* | |
private readonly Func<TMessage, object> caseDelegate; | |
private readonly Func<TBuilder, IBuilder> clearDelegate; | |
private MessageDescriptor descriptor; | |
internal OneofAccessor(MessageDescriptor descriptor, string name) | |
{ | |
this.descriptor = descriptor; | |
MethodInfo clearMethod = typeof(TBuilder).GetMethod("Clear" + name); | |
PropertyInfo caseProperty = typeof(TMessage).GetProperty(name + "Case"); | |
if (clearMethod == null || caseProperty == null) | |
{ | |
throw new ArgumentException("Not all required properties/methods available for oneof"); | |
} | |
clearDelegate = ReflectionUtil.CreateDelegateFunc<TBuilder, IBuilder>(clearMethod); | |
caseDelegate = ReflectionUtil.CreateUpcastDelegate<TMessage>(caseProperty.GetGetMethod()); | |
} | |
/// <summary> | |
/// Indicates whether the specified message has set any field in the oneof. | |
/// </summary> | |
public bool Has(TMessage message) | |
{ | |
return ((int) caseDelegate(message) != 0); | |
} | |
/// <summary> | |
/// Clears the oneof in the specified builder. | |
/// </summary> | |
public void Clear(TBuilder builder) | |
{ | |
clearDelegate(builder); | |
} | |
/// <summary> | |
/// Indicates which field in the oneof is set for specified message | |
/// </summary> | |
public virtual FieldDescriptor GetOneofFieldDescriptor(TMessage message) | |
{ | |
int fieldNumber = (int) caseDelegate(message); | |
if (fieldNumber > 0) | |
{ | |
return descriptor.FindFieldByNumber(fieldNumber); | |
} | |
return null; | |
}*/ | |
} | |
} |