#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 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 class AbstractMessage<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 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; }
public abstract TMessage DefaultInstanceForType { get; }
public abstract TBuilder CreateBuilderForType();
public abstract TBuilder ToBuilder();
#endregion
public IBuilder WeakCreateBuilderForType() {
return CreateBuilderForType();
}
public IBuilder WeakToBuilder() {
return ToBuilder();
}
IMessageLite IMessageLite.WeakDefaultInstanceForType {
get { return DefaultInstanceForType; }
}
public IMessage WeakDefaultInstanceForType {
get { return DefaultInstanceForType; }
}
public virtual 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 (IMessage element in (IEnumerable) entry.Value) {
if (!element.IsInitialized) {
return false;
}
}
} else {
if (!((IMessage)entry.Value).IsInitialized) {
return false;
}
}
}
}
return true;
}
}
public sealed override string ToString() {
return TextFormat.PrintToString(this);
}
public virtual void WriteTo(CodedOutputStream 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.WriteTag(field.FieldNumber, WireFormat.WireType.LengthDelimited);
int dataSize = 0;
foreach (object element in valueList) {
dataSize += CodedOutputStream.ComputeFieldSizeNoTag(field.FieldType, element);
}
output.WriteRawVarint32((uint)dataSize);
foreach (object element in valueList) {
output.WriteFieldNoTag(field.FieldType, element);
}
} else {
foreach (object element in valueList) {
output.WriteField(field.FieldType, field.FieldNumber, element);
}
}
} else {
output.WriteField(field.FieldType, field.FieldNumber, entry.Value);
}
}
UnknownFieldSet unknownFields = UnknownFields;
if (DescriptorForType.Options.MessageSetWireFormat) {
unknownFields.WriteAsMessageSetTo(output);
} else {
unknownFields.WriteTo(output);
}
}
public virtual 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;
}
}
public ByteString ToByteString() {
ByteString.CodedBuilder output = new ByteString.CodedBuilder(SerializedSize);
WriteTo(output.CodedOutput);
return output.Build();
}
public byte[] ToByteArray() {
byte[] result = new byte[SerializedSize];
CodedOutputStream output = CodedOutputStream.CreateInstance(result);
WriteTo(output);
output.CheckNoSpaceLeft();
return result;
}
public void WriteTo(Stream output) {
CodedOutputStream codedOutput = CodedOutputStream.CreateInstance(output);
WriteTo(codedOutput);
codedOutput.Flush();
}
public void WriteDelimitedTo(Stream output) {
CodedOutputStream codedOutput = CodedOutputStream.CreateInstance(output);
codedOutput.WriteRawVarint32((uint) SerializedSize);
WriteTo(codedOutput);
codedOutput.Flush();
}
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);
}
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;
}
IBuilderLite IMessageLite.WeakCreateBuilderForType() {
return WeakCreateBuilderForType(); }
IBuilderLite IMessageLite.WeakToBuilder() {
return WeakToBuilder();
}
}
}