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using System;
using System.Collections.Generic;
using System.Text;
using Google.ProtocolBuffers.Descriptors;
using System.Collections;
using System.IO;
namespace Google.ProtocolBuffers {
/// <summary>
/// Implementation of the non-generic IMessage interface as far as possible.
/// </summary>
public abstract class AbstractBuilder<TMessage, TBuilder> : IBuilder<TMessage, TBuilder>
where TMessage : AbstractMessage<TMessage, TBuilder>
where TBuilder : AbstractBuilder<TMessage, TBuilder> {
protected abstract TBuilder ThisBuilder { get; }
#region Unimplemented members of IBuilder
public abstract UnknownFieldSet UnknownFields { get; set; }
public abstract TBuilder MergeFrom(TMessage other);
public abstract bool IsInitialized { get; }
public abstract IDictionary<FieldDescriptor, object> AllFields { get; }
public abstract object this[FieldDescriptor field] { get; set; }
public abstract MessageDescriptor DescriptorForType { get; }
public abstract int GetRepeatedFieldCount(FieldDescriptor field);
public abstract object this[FieldDescriptor field, int index] { get; set; }
public abstract bool HasField(FieldDescriptor field);
public abstract TMessage Build();
public abstract TMessage BuildPartial();
public abstract TBuilder Clone();
public abstract TMessage DefaultInstanceForType { get; }
public abstract IBuilder CreateBuilderForField(FieldDescriptor field);
public abstract TBuilder ClearField(FieldDescriptor field);
public abstract TBuilder AddRepeatedField(FieldDescriptor field, object value);
#endregion
#region Implementation of methods which don't require type parameter information
public IMessage WeakBuild() {
return Build();
}
public IBuilder WeakAddRepeatedField(FieldDescriptor field, object value) {
return AddRepeatedField(field, value);
}
public IBuilder WeakClear() {
return Clear();
}
public IBuilder WeakMergeFrom(IMessage message) {
return MergeFrom(message);
}
public IBuilder WeakMergeFrom(CodedInputStream input) {
return MergeFrom(input);
}
public IBuilder WeakMergeFrom(CodedInputStream input, ExtensionRegistry registry) {
return MergeFrom(input, registry);
}
public IBuilder WeakMergeFrom(ByteString data) {
return MergeFrom(data);
}
public IBuilder WeakMergeFrom(ByteString data, ExtensionRegistry registry) {
return MergeFrom(data, registry);
}
public IMessage WeakBuildPartial() {
return BuildPartial();
}
public IBuilder WeakClone() {
return Clone();
}
public IMessage WeakDefaultInstanceForType {
get { return DefaultInstanceForType; }
}
public IBuilder WeakClearField(FieldDescriptor field) {
return ClearField(field);
}
#endregion
public TBuilder SetUnknownFields(UnknownFieldSet fields) {
UnknownFields = fields;
return ThisBuilder;
}
public virtual TBuilder Clear() {
foreach(FieldDescriptor field in AllFields.Keys) {
ClearField(field);
}
return ThisBuilder;
}
public virtual TBuilder MergeFrom(IMessage other) {
if (other.DescriptorForType != DescriptorForType) {
throw new ArgumentException("MergeFrom(IMessage) can only merge messages of the same type.");
}
// Note: We don't attempt to verify that other's fields have valid
// types. Doing so would be a losing battle. We'd have to verify
// all sub-messages as well, and we'd have to make copies of all of
// them to insure that they don't change after verification (since
// the Message interface itself cannot enforce immutability of
// implementations).
// TODO(jonskeet): Provide a function somewhere called makeDeepCopy()
// which allows people to make secure deep copies of messages.
foreach (KeyValuePair<FieldDescriptor, object> entry in other.AllFields) {
FieldDescriptor field = entry.Key;
if (field.IsRepeated) {
// Concatenate repeated fields
foreach (object element in (IEnumerable) entry.Value) {
AddRepeatedField(field, element);
}
} else if (field.MappedType == MappedType.Message) {
// Merge singular messages
IMessage existingValue = (IMessage) this[field];
if (existingValue == existingValue.WeakDefaultInstanceForType) {
this[field] = entry.Value;
} else {
this[field] = existingValue.WeakCreateBuilderForType()
.WeakMergeFrom(existingValue)
.WeakMergeFrom((IMessage) entry.Value)
.WeakBuild();
}
} else {
// Overwrite simple values
this[field] = entry.Value;
}
}
return ThisBuilder;
}
public virtual TBuilder MergeFrom(CodedInputStream input) {
return MergeFrom(input, ExtensionRegistry.Empty);
}
public virtual TBuilder MergeFrom(CodedInputStream input, ExtensionRegistry extensionRegistry) {
UnknownFieldSet.Builder unknownFields = UnknownFieldSet.CreateBuilder(UnknownFields);
FieldSet.MergeFrom(input, unknownFields, extensionRegistry, this);
UnknownFields = unknownFields.Build();
return ThisBuilder;
}
public virtual TBuilder MergeUnknownFields(UnknownFieldSet unknownFields) {
UnknownFields = UnknownFieldSet.CreateBuilder(UnknownFields)
.MergeFrom(unknownFields)
.Build();
return ThisBuilder;
}
public virtual TBuilder MergeFrom(ByteString data) {
CodedInputStream input = data.CreateCodedInput();
MergeFrom(input);
input.CheckLastTagWas(0);
return ThisBuilder;
}
public virtual TBuilder MergeFrom(ByteString data, ExtensionRegistry extensionRegistry) {
CodedInputStream input = data.CreateCodedInput();
MergeFrom(input, extensionRegistry);
input.CheckLastTagWas(0);
return ThisBuilder;
}
public virtual TBuilder MergeFrom(byte[] data) {
CodedInputStream input = CodedInputStream.CreateInstance(data);
MergeFrom(input);
input.CheckLastTagWas(0);
return ThisBuilder;
}
public virtual TBuilder MergeFrom(byte[] data, ExtensionRegistry extensionRegistry) {
CodedInputStream input = CodedInputStream.CreateInstance(data);
MergeFrom(input, extensionRegistry);
input.CheckLastTagWas(0);
return ThisBuilder;
}
public virtual TBuilder MergeFrom(Stream input) {
CodedInputStream codedInput = CodedInputStream.CreateInstance(input);
MergeFrom(codedInput);
codedInput.CheckLastTagWas(0);
return ThisBuilder;
}
public virtual TBuilder MergeFrom(Stream input, ExtensionRegistry extensionRegistry) {
CodedInputStream codedInput = CodedInputStream.CreateInstance(input);
MergeFrom(codedInput, extensionRegistry);
codedInput.CheckLastTagWas(0);
return ThisBuilder;
}
public virtual IBuilder SetField(FieldDescriptor field, object value) {
this[field] = value;
return ThisBuilder;
}
public virtual IBuilder SetRepeatedField(FieldDescriptor field, int index, object value) {
this[field, index] = value;
return ThisBuilder;
}
}
}
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