1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
// 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(this)
: 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(this, 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(this, value);
return ThisBuilder;
}
/// <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 (!IsInitialized) {
throw new UninitializedMessageException(MessageBeingBuilt).AsInvalidProtocolBufferException();
}
return BuildPartial();
}
/// <summary>
/// Implementation of <see cref="IBuilder{TMessage, TBuilder}.Build" />.
/// TODO(jonskeet): This used to be generated for each class. Find out why.
/// </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); }
}
}
}
|
