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diff --git a/csharp/src/ProtocolBuffers/AbstractMessage.cs b/csharp/src/ProtocolBuffers/AbstractMessage.cs
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--- a/csharp/src/ProtocolBuffers/AbstractMessage.cs
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-#region Copyright notice and license
-
-// 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.
-
-#endregion
-
-using System.Collections;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Google.ProtocolBuffers.Collections;
-using Google.ProtocolBuffers.Descriptors;
-
-namespace Google.ProtocolBuffers
-{
- /// <summary>
- /// Implementation of the non-generic IMessage interface as far as possible.
- /// </summary>
- public abstract partial class AbstractMessage<TMessage, TBuilder> : AbstractMessageLite<TMessage, TBuilder>,
- IMessage<TMessage, TBuilder>
- where TMessage : AbstractMessage<TMessage, TBuilder>
- where TBuilder : AbstractBuilder<TMessage, TBuilder>
- {
- /// <summary>
- /// The serialized size if it's already been computed, or null
- /// if we haven't computed it yet.
- /// </summary>
- private int? memoizedSize = null;
-
- #region Unimplemented members of IMessage
-
- public abstract MessageDescriptor DescriptorForType { get; }
- public abstract IDictionary<FieldDescriptor, object> AllFields { get; }
- public abstract bool HasField(FieldDescriptor field);
- public abstract bool HasOneof(OneofDescriptor oneof);
- public abstract FieldDescriptor OneofFieldDescriptor(OneofDescriptor oneof);
- public abstract object this[FieldDescriptor field] { get; }
- public abstract int GetRepeatedFieldCount(FieldDescriptor field);
- public abstract object this[FieldDescriptor field, int index] { get; }
- public abstract UnknownFieldSet UnknownFields { get; }
-
- #endregion
-
- /// <summary>
- /// Returns true iff all required fields in the message and all embedded
- /// messages are set.
- /// </summary>
- public override bool IsInitialized
- {
- get
- {
- // Check that all required fields are present.
- foreach (FieldDescriptor field in DescriptorForType.Fields)
- {
- if (field.IsRequired && !HasField(field))
- {
- return false;
- }
- }
-
- // Check that embedded messages are initialized.
- foreach (KeyValuePair<FieldDescriptor, object> entry in AllFields)
- {
- FieldDescriptor field = entry.Key;
- if (field.MappedType == MappedType.Message)
- {
- if (field.IsRepeated)
- {
- // We know it's an IList<T>, but not the exact type - so
- // IEnumerable is the best we can do. (C# generics aren't covariant yet.)
- foreach (IMessageLite element in (IEnumerable) entry.Value)
- {
- if (!element.IsInitialized)
- {
- return false;
- }
- }
- }
- else
- {
- if (!((IMessageLite) entry.Value).IsInitialized)
- {
- return false;
- }
- }
- }
- }
- return true;
- }
- }
-
- public override sealed string ToString()
- {
- return TextFormat.PrintToString(this);
- }
-
- public override sealed void PrintTo(TextWriter writer)
- {
- TextFormat.Print(this, writer);
- }
-
- /// <summary>
- /// Serializes the message and writes it to the given output stream.
- /// This does not flush or close the stream.
- /// </summary>
- /// <remarks>
- /// Protocol Buffers are not self-delimiting. Therefore, if you write
- /// any more data to the stream after the message, you must somehow ensure
- /// that the parser on the receiving end does not interpret this as being
- /// part of the protocol message. One way of doing this is by writing the size
- /// of the message before the data, then making sure you limit the input to
- /// that size when receiving the data. Alternatively, use WriteDelimitedTo(Stream).
- /// </remarks>
- public override void WriteTo(ICodedOutputStream output)
- {
- foreach (KeyValuePair<FieldDescriptor, object> entry in AllFields)
- {
- FieldDescriptor field = entry.Key;
- if (field.IsRepeated)
- {
- // We know it's an IList<T>, but not the exact type - so
- // IEnumerable is the best we can do. (C# generics aren't covariant yet.)
- IEnumerable valueList = (IEnumerable) entry.Value;
- if (field.IsPacked)
- {
- output.WritePackedArray(field.FieldType, field.FieldNumber, field.Name, valueList);
- }
- else
- {
- output.WriteArray(field.FieldType, field.FieldNumber, field.Name, valueList);
- }
- }
- else
- {
- output.WriteField(field.FieldType, field.FieldNumber, field.Name, entry.Value);
- }
- }
-
- UnknownFieldSet unknownFields = UnknownFields;
- if (DescriptorForType.Options.MessageSetWireFormat)
- {
- unknownFields.WriteAsMessageSetTo(output);
- }
- else
- {
- unknownFields.WriteTo(output);
- }
- }
-
- /// <summary>
- /// Returns the number of bytes required to encode this message.
- /// The result is only computed on the first call and memoized after that.
- /// </summary>
- public override int SerializedSize
- {
- get
- {
- if (memoizedSize != null)
- {
- return memoizedSize.Value;
- }
-
- int size = 0;
- foreach (KeyValuePair<FieldDescriptor, object> entry in AllFields)
- {
- FieldDescriptor field = entry.Key;
- if (field.IsRepeated)
- {
- IEnumerable valueList = (IEnumerable) entry.Value;
- if (field.IsPacked)
- {
- int dataSize = 0;
- foreach (object element in valueList)
- {
- dataSize += CodedOutputStream.ComputeFieldSizeNoTag(field.FieldType, element);
- }
- size += dataSize;
- size += CodedOutputStream.ComputeTagSize(field.FieldNumber);
- size += CodedOutputStream.ComputeRawVarint32Size((uint) dataSize);
- }
- else
- {
- foreach (object element in valueList)
- {
- size += CodedOutputStream.ComputeFieldSize(field.FieldType, field.FieldNumber, element);
- }
- }
- }
- else
- {
- size += CodedOutputStream.ComputeFieldSize(field.FieldType, field.FieldNumber, entry.Value);
- }
- }
-
- UnknownFieldSet unknownFields = UnknownFields;
- if (DescriptorForType.Options.MessageSetWireFormat)
- {
- size += unknownFields.SerializedSizeAsMessageSet;
- }
- else
- {
- size += unknownFields.SerializedSize;
- }
-
- memoizedSize = size;
- return size;
- }
- }
-
- /// <summary>
- /// Compares the specified object with this message for equality.
- /// Returns true iff the given object is a message of the same type
- /// (as defined by DescriptorForType) and has identical values
- /// for all its fields.
- /// </summary>
- public override bool Equals(object other)
- {
- if (other == this)
- {
- return true;
- }
- IMessage otherMessage = other as IMessage;
- if (otherMessage == null || otherMessage.DescriptorForType != DescriptorForType)
- {
- return false;
- }
- return Dictionaries.Equals(AllFields, otherMessage.AllFields) &&
- UnknownFields.Equals(otherMessage.UnknownFields);
- }
-
- /// <summary>
- /// Returns the hash code value for this message.
- /// TODO(jonskeet): Specify the hash algorithm, but better than the Java one!
- /// </summary>
- public override int GetHashCode()
- {
- int hash = 41;
- hash = (19*hash) + DescriptorForType.GetHashCode();
- hash = (53*hash) + Dictionaries.GetHashCode(AllFields);
- hash = (29*hash) + UnknownFields.GetHashCode();
- return hash;
- }
-
- #region Explicit Members
-
- IBuilder IMessage.WeakCreateBuilderForType()
- {
- return CreateBuilderForType();
- }
-
- IBuilder IMessage.WeakToBuilder()
- {
- return ToBuilder();
- }
-
- IMessage IMessage.WeakDefaultInstanceForType
- {
- get { return DefaultInstanceForType; }
- }
-
- #endregion
- }
-} \ No newline at end of file