// 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 System.Collections;
using System.Collections.Generic;
using System.IO;
using Google.ProtocolBuffers.Collections;
using Google.ProtocolBuffers.Descriptors;
namespace Google.ProtocolBuffers {
///
/// Implementation of the non-generic IMessage interface as far as possible.
///
public abstract class AbstractMessage : IMessage
where TMessage : AbstractMessage
where TBuilder : AbstractBuilder {
///
/// The serialized size if it's already been computed, or null
/// if we haven't computed it yet.
///
private int? memoizedSize = null;
#region Unimplemented members of IMessage
public abstract MessageDescriptor DescriptorForType { get; }
public abstract IDictionary 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();
#endregion
public IBuilder WeakCreateBuilderForType() {
return CreateBuilderForType();
}
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 entry in AllFields) {
FieldDescriptor field = entry.Key;
if (field.MappedType == MappedType.Message) {
if (field.IsRepeated) {
// We know it's an IList, 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 entry in AllFields) {
FieldDescriptor field = entry.Key;
if (field.IsRepeated) {
// We know it's an IList, but not the exact type - so
// IEnumerable is the best we can do. (C# generics aren't covariant yet.)
foreach (object element in (IEnumerable)entry.Value) {
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 entry in AllFields) {
FieldDescriptor field = entry.Key;
if (field.IsRepeated) {
foreach (object element in (IEnumerable) entry.Value) {
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 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);
}
public override int GetHashCode() {
int hash = 41;
hash = (19 * hash) + DescriptorForType.GetHashCode();
hash = (53 * hash) + Dictionaries.GetHashCode(AllFields);
return hash;
}
}
}