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-rw-r--r--csharp/ProtocolBuffers/AbstractBuilder.cs222
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diff --git a/csharp/ProtocolBuffers/AbstractBuilder.cs b/csharp/ProtocolBuffers/AbstractBuilder.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 System.IO;
-using Google.ProtocolBuffers.Descriptors;
-
-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);
- unknownFields.MergeFrom(input, 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;
- }
- }
-}