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using System;
using System.Collections.Generic;
using System.Text;
using Google.ProtocolBuffers.Collections;
using Google.ProtocolBuffers.Descriptors;
using System.IO;
namespace Google.ProtocolBuffers {
/// <summary>
/// All generated protocol message builder classes extend this class. It implements
/// most of the IBuilder interface using reflection. Users can ignore this class
/// as an implementation detail.
/// </summary>
public abstract class GeneratedBuilder<TMessage, TBuilder> : AbstractBuilder, IBuilder<TMessage>
where TMessage : GeneratedMessage <TMessage, TBuilder>
where TBuilder : GeneratedBuilder<TMessage, TBuilder>, IBuilder<TMessage> {
/// <summary>
/// Returns the message being built at the moment.
/// </summary>
protected abstract TMessage MessageBeingBuilt { get; }
public override bool Initialized {
get { return MessageBeingBuilt.IsInitialized; }
}
public override IDictionary<FieldDescriptor, object> AllFields {
get { return MessageBeingBuilt.AllFields; }
}
public override object this[FieldDescriptor field] {
get {
// For repeated fields, the underlying list object is still modifiable at this point.
// Make sure not to expose the modifiable list to the caller.
return field.IsRepeated
? MessageBeingBuilt.InternalFieldAccessors[field].GetRepeatedWrapper(this)
: MessageBeingBuilt[field];
}
set {
MessageBeingBuilt.InternalFieldAccessors[field].SetValue(this, value);
}
}
/// <summary>
/// Adds all of the specified values to the given collection.
/// </summary>
protected void AddRange<T>(IEnumerable<T> source, IList<T> destination) {
List<T> list = destination as List<T>;
if (list != null) {
list.AddRange(source);
} else {
foreach (T element in source) {
destination.Add(element);
}
}
}
/// <summary>
/// Called by derived classes to parse an unknown field.
/// </summary>
/// <returns>true unless the tag is an end-group tag</returns>
protected bool ParseUnknownField(CodedInputStream input, UnknownFieldSet.Builder unknownFields,
ExtensionRegistry extensionRegistry, uint tag) {
return unknownFields.MergeFieldFrom(tag, input);
}
public override MessageDescriptor DescriptorForType {
get { return MessageBeingBuilt.DescriptorForType; }
}
public override int GetRepeatedFieldCount(FieldDescriptor field) {
return MessageBeingBuilt.GetRepeatedFieldCount(field);
}
public override object this[FieldDescriptor field, int index] {
get { return MessageBeingBuilt[field, index]; }
set { MessageBeingBuilt.InternalFieldAccessors[field].SetRepeated(this, index, value); }
}
public override bool HasField(FieldDescriptor field) {
return MessageBeingBuilt.HasField(field);
}
protected override IMessage BuildImpl() {
return Build();
}
protected override IMessage BuildPartialImpl() {
return BuildPartial();
}
protected override IBuilder CloneImpl() {
return Clone();
}
protected override IMessage DefaultInstanceForTypeImpl {
get { return DefaultInstanceForType; }
}
public override IBuilder CreateBuilderForField(FieldDescriptor field) {
return MessageBeingBuilt.InternalFieldAccessors[field].CreateBuilder();
}
protected override IBuilder ClearFieldImpl(FieldDescriptor field) {
return ClearField(field);
}
protected override IBuilder AddRepeatedFieldImpl(FieldDescriptor field, object value) {
return AddRepeatedField(field, value);
}
public IBuilder<TMessage> ClearField(FieldDescriptor field) {
MessageBeingBuilt.InternalFieldAccessors[field].Clear(this);
return this;
}
// FIXME: Implement!
public virtual IBuilder<TMessage> MergeFrom(TMessage other) { return this; }
public virtual IBuilder<TMessage> MergeUnknownFields(UnknownFieldSet unknownFields) { return this; }
public IBuilder<TMessage> AddRepeatedField(FieldDescriptor field, object value) {
MessageBeingBuilt.InternalFieldAccessors[field].AddRepeated(this, value);
return this;
}
public IBuilder<TMessage> MergeFrom(ByteString data) {
((IBuilder) this).MergeFrom(data);
return this;
}
public IBuilder<TMessage> MergeFrom(ByteString data, ExtensionRegistry extensionRegistry) {
((IBuilder) this).MergeFrom(data, extensionRegistry);
return this;
}
public IBuilder<TMessage> MergeFrom(byte[] data) {
((IBuilder) this).MergeFrom(data);
return this;
}
public IBuilder<TMessage> MergeFrom(byte[] data, ExtensionRegistry extensionRegistry) {
((IBuilder) this).MergeFrom(data, extensionRegistry);
return this;
}
public IBuilder<TMessage> MergeFrom(Stream input) {
((IBuilder) this).MergeFrom(input);
return this;
}
public IBuilder<TMessage> MergeFrom(Stream input, ExtensionRegistry extensionRegistry) {
((IBuilder) this).MergeFrom(input, extensionRegistry);
return this;
}
/// <summary>
/// Like Build(), but will wrap UninitializedMessageException in
/// InvalidProtocolBufferException.
/// TODO(jonskeet): This used to be generated for each class. Find out why.
/// </summary>
public TMessage BuildParsed() {
if (!Initialized) {
throw new UninitializedMessageException(MessageBeingBuilt).AsInvalidProtocolBufferException();
}
return BuildPartial();
}
/// <summary>
/// Implementation of <see cref="IBuilder{T}.Build" />.
/// TODO(jonskeet): This used to be generated for each class. Find out why.
/// </summary>
public TMessage Build() {
if (!Initialized) {
throw new UninitializedMessageException(MessageBeingBuilt);
}
return BuildPartial();
}
public abstract TMessage BuildPartial();
public abstract IBuilder<TMessage> Clone();
public abstract new IBuilder<TMessage> Clear();
public abstract TMessage DefaultInstanceForType { get; }
public abstract IBuilder<TMessage> MergeFrom(CodedInputStream input);
public abstract IBuilder<TMessage> MergeFrom(CodedInputStream input, ExtensionRegistry extensionRegistry);
}
}
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