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-rw-r--r--csharp/ProtocolBuffers/GeneratedBuilder.cs177
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diff --git a/csharp/ProtocolBuffers/GeneratedBuilder.cs b/csharp/ProtocolBuffers/GeneratedBuilder.cs
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--- a/csharp/ProtocolBuffers/GeneratedBuilder.cs
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-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.
-// http://code.google.com/p/protobuf/
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using Google.ProtocolBuffers.Descriptors;
-using Google.ProtocolBuffers.FieldAccess;
-
-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<TMessage, TBuilder>
- where TMessage : GeneratedMessage <TMessage, TBuilder>
- where TBuilder : GeneratedBuilder<TMessage, TBuilder> {
-
- /// <summary>
- /// Returns the message being built at the moment.
- /// </summary>
- protected abstract TMessage MessageBeingBuilt { get; }
-
- protected internal FieldAccessorTable<TMessage, TBuilder> InternalFieldAccessors {
- get { return MessageBeingBuilt.FieldAccessorsFromBuilder; }
- }
-
- public override bool IsInitialized {
- 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
- ? InternalFieldAccessors[field].GetRepeatedWrapper(ThisBuilder)
- : MessageBeingBuilt[field];
- }
- set {
- InternalFieldAccessors[field].SetValue(ThisBuilder, 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 virtual 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 { InternalFieldAccessors[field].SetRepeated(ThisBuilder, index, value); }
- }
-
- public override bool HasField(FieldDescriptor field) {
- return MessageBeingBuilt.HasField(field);
- }
-
- public override IBuilder CreateBuilderForField(FieldDescriptor field) {
- return InternalFieldAccessors[field].CreateBuilder();
- }
-
- public override TBuilder ClearField(FieldDescriptor field) {
- InternalFieldAccessors[field].Clear(ThisBuilder);
- return ThisBuilder;
- }
-
- public override TBuilder MergeFrom(TMessage other) {
- if (other.DescriptorForType != InternalFieldAccessors.Descriptor) {
- throw new ArgumentException("Message type mismatch");
- }
-
- foreach (KeyValuePair<FieldDescriptor, object> entry in 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 && HasField(field)) {
- // Merge singular embedded messages
- IMessage oldValue = (IMessage)this[field];
- this[field] = oldValue.WeakCreateBuilderForType()
- .WeakMergeFrom(oldValue)
- .WeakMergeFrom((IMessage)entry.Value)
- .WeakBuildPartial();
- } else {
- // Just overwrite
- this[field] = entry.Value;
- }
- }
- return ThisBuilder;
- }
-
- public override TBuilder MergeUnknownFields(UnknownFieldSet unknownFields) {
- TMessage result = MessageBeingBuilt;
- result.SetUnknownFields(UnknownFieldSet.CreateBuilder(result.UnknownFields)
- .MergeFrom(unknownFields)
- .Build());
- return ThisBuilder;
- }
-
- public override TBuilder AddRepeatedField(FieldDescriptor field, object value) {
- InternalFieldAccessors[field].AddRepeated(ThisBuilder, value);
- return ThisBuilder;
- }
-
- /// <summary>
- /// Like Build(), but will wrap UninitializedMessageException in
- /// InvalidProtocolBufferException.
- /// </summary>
- public TMessage BuildParsed() {
- if (!IsInitialized) {
- throw new UninitializedMessageException(MessageBeingBuilt).AsInvalidProtocolBufferException();
- }
- return BuildPartial();
- }
-
- /// <summary>
- /// Implementation of <see cref="IBuilder{TMessage, TBuilder}.Build" />.
- /// </summary>
- public override TMessage Build() {
- if (!IsInitialized) {
- throw new UninitializedMessageException(MessageBeingBuilt);
- }
- return BuildPartial();
- }
-
- public override UnknownFieldSet UnknownFields {
- get { return MessageBeingBuilt.UnknownFields; }
- set { MessageBeingBuilt.SetUnknownFields(value); }
- }
- }
-}