[8295] | 1 | #region Copyright notice and license
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| 2 |
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| 3 | // Protocol Buffers - Google's data interchange format
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| 4 | // Copyright 2008 Google Inc. All rights reserved.
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| 5 | // http://github.com/jskeet/dotnet-protobufs/
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| 6 | // Original C++/Java/Python code:
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| 7 | // http://code.google.com/p/protobuf/
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| 8 | //
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| 9 | // Redistribution and use in source and binary forms, with or without
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| 10 | // modification, are permitted provided that the following conditions are
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| 11 | // met:
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| 12 | //
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| 13 | // * Redistributions of source code must retain the above copyright
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| 14 | // notice, this list of conditions and the following disclaimer.
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| 15 | // * Redistributions in binary form must reproduce the above
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| 16 | // copyright notice, this list of conditions and the following disclaimer
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| 17 | // in the documentation and/or other materials provided with the
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| 18 | // distribution.
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| 19 | // * Neither the name of Google Inc. nor the names of its
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| 20 | // contributors may be used to endorse or promote products derived from
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| 21 | // this software without specific prior written permission.
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| 22 | //
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| 23 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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| 24 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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| 25 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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| 26 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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| 27 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 28 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 29 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 30 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 31 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 32 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| 33 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 34 |
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| 35 | #endregion
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| 36 |
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| 37 | using System;
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| 38 | using System.Collections;
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| 39 | using System.Collections.Generic;
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| 40 | using Google.ProtocolBuffers.Descriptors;
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| 41 | using Google.ProtocolBuffers.FieldAccess;
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| 42 |
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| 43 | namespace Google.ProtocolBuffers
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| 44 | {
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| 45 | /// <summary>
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| 46 | /// All generated protocol message builder classes extend this class. It implements
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| 47 | /// most of the IBuilder interface using reflection. Users can ignore this class
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| 48 | /// as an implementation detail.
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| 49 | /// </summary>
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| 50 | public abstract partial class GeneratedBuilder<TMessage, TBuilder> : AbstractBuilder<TMessage, TBuilder>
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| 51 | where TMessage : GeneratedMessage<TMessage, TBuilder>
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| 52 | where TBuilder : GeneratedBuilder<TMessage, TBuilder>, new()
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| 53 | {
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| 54 | /// <summary>
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| 55 | /// Returns the message being built at the moment.
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| 56 | /// </summary>
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| 57 | protected abstract TMessage MessageBeingBuilt { get; }
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| 58 |
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| 59 | protected internal FieldAccessorTable<TMessage, TBuilder> InternalFieldAccessors
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| 60 | {
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| 61 | get { return DefaultInstanceForType.FieldAccessorsFromBuilder; }
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| 62 | }
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| 63 |
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| 64 | public override IDictionary<FieldDescriptor, object> AllFields
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| 65 | {
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| 66 | get { return MessageBeingBuilt.AllFields; }
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| 67 | }
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| 68 |
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| 69 | public override object this[FieldDescriptor field]
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| 70 | {
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| 71 | get
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| 72 | {
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| 73 | // For repeated fields, the underlying list object is still modifiable at this point.
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| 74 | // Make sure not to expose the modifiable list to the caller.
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| 75 | return field.IsRepeated
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| 76 | ? InternalFieldAccessors[field].GetRepeatedWrapper(ThisBuilder)
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| 77 | : MessageBeingBuilt[field];
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| 78 | }
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| 79 | set { InternalFieldAccessors[field].SetValue(ThisBuilder, value); }
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| 80 | }
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| 81 |
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| 82 | /// <summary>
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| 83 | /// Called by derived classes to parse an unknown field.
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| 84 | /// </summary>
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| 85 | /// <returns>true unless the tag is an end-group tag</returns>
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| 86 | [CLSCompliant(false)]
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| 87 | protected virtual bool ParseUnknownField(ICodedInputStream input, UnknownFieldSet.Builder unknownFields,
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| 88 | ExtensionRegistry extensionRegistry, uint tag, string fieldName)
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| 89 | {
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| 90 | return unknownFields.MergeFieldFrom(tag, input);
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| 91 | }
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| 92 |
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| 93 | public override MessageDescriptor DescriptorForType
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| 94 | {
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| 95 | get { return DefaultInstanceForType.DescriptorForType; }
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| 96 | }
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| 97 |
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| 98 | public override int GetRepeatedFieldCount(FieldDescriptor field)
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| 99 | {
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| 100 | return MessageBeingBuilt.GetRepeatedFieldCount(field);
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| 101 | }
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| 102 |
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| 103 | public override object this[FieldDescriptor field, int index]
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| 104 | {
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| 105 | get { return MessageBeingBuilt[field, index]; }
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| 106 | set { InternalFieldAccessors[field].SetRepeated(ThisBuilder, index, value); }
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| 107 | }
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| 108 |
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| 109 | public override bool HasField(FieldDescriptor field)
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| 110 | {
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| 111 | return MessageBeingBuilt.HasField(field);
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| 112 | }
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| 113 |
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| 114 | public override IBuilder CreateBuilderForField(FieldDescriptor field)
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| 115 | {
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| 116 | return InternalFieldAccessors[field].CreateBuilder();
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| 117 | }
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| 118 |
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| 119 | public override TBuilder ClearField(FieldDescriptor field)
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| 120 | {
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| 121 | InternalFieldAccessors[field].Clear(ThisBuilder);
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| 122 | return ThisBuilder;
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| 123 | }
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| 124 |
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| 125 | public override TBuilder MergeFrom(TMessage other)
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| 126 | {
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| 127 | if (other.DescriptorForType != InternalFieldAccessors.Descriptor)
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| 128 | {
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| 129 | throw new ArgumentException("Message type mismatch");
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| 130 | }
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| 131 |
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| 132 | foreach (KeyValuePair<FieldDescriptor, object> entry in other.AllFields)
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| 133 | {
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| 134 | FieldDescriptor field = entry.Key;
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| 135 | if (field.IsRepeated)
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| 136 | {
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| 137 | // Concatenate repeated fields
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| 138 | foreach (object element in (IEnumerable) entry.Value)
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| 139 | {
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| 140 | AddRepeatedField(field, element);
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| 141 | }
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| 142 | }
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| 143 | else if (field.MappedType == MappedType.Message && HasField(field))
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| 144 | {
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| 145 | // Merge singular embedded messages
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| 146 | IMessageLite oldValue = (IMessageLite) this[field];
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| 147 | this[field] = oldValue.WeakCreateBuilderForType()
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| 148 | .WeakMergeFrom(oldValue)
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| 149 | .WeakMergeFrom((IMessageLite) entry.Value)
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| 150 | .WeakBuildPartial();
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| 151 | }
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| 152 | else
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| 153 | {
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| 154 | // Just overwrite
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| 155 | this[field] = entry.Value;
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| 156 | }
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| 157 | }
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| 158 |
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| 159 | //Fix for unknown fields not merging, see java's AbstractMessage.Builder<T> line 236
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| 160 | MergeUnknownFields(other.UnknownFields);
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| 161 |
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| 162 | return ThisBuilder;
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| 163 | }
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| 164 |
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| 165 | public override TBuilder MergeUnknownFields(UnknownFieldSet unknownFields)
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| 166 | {
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| 167 | if (unknownFields != UnknownFieldSet.DefaultInstance)
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| 168 | {
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| 169 | TMessage result = MessageBeingBuilt;
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| 170 | result.SetUnknownFields(UnknownFieldSet.CreateBuilder(result.UnknownFields)
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| 171 | .MergeFrom(unknownFields)
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| 172 | .Build());
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| 173 | }
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| 174 | return ThisBuilder;
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| 175 | }
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| 176 |
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| 177 | public override TBuilder AddRepeatedField(FieldDescriptor field, object value)
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| 178 | {
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| 179 | InternalFieldAccessors[field].AddRepeated(ThisBuilder, value);
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| 180 | return ThisBuilder;
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| 181 | }
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| 182 |
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| 183 | /// <summary>
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| 184 | /// Like Build(), but will wrap UninitializedMessageException in
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| 185 | /// InvalidProtocolBufferException.
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| 186 | /// </summary>
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| 187 | public TMessage BuildParsed()
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| 188 | {
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| 189 | if (!IsInitialized)
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| 190 | {
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| 191 | throw new UninitializedMessageException(MessageBeingBuilt).AsInvalidProtocolBufferException();
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| 192 | }
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| 193 | return BuildPartial();
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| 194 | }
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| 195 |
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| 196 | /// <summary>
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| 197 | /// Implementation of <see cref="IBuilder{TMessage, TBuilder}.Build" />.
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| 198 | /// </summary>
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| 199 | public override TMessage Build()
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| 200 | {
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| 201 | // If the message is null, we'll throw a more appropriate exception in BuildPartial.
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| 202 | if (!IsInitialized)
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| 203 | {
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| 204 | throw new UninitializedMessageException(MessageBeingBuilt);
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| 205 | }
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| 206 | return BuildPartial();
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| 207 | }
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| 208 |
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| 209 | public override UnknownFieldSet UnknownFields
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| 210 | {
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| 211 | get { return MessageBeingBuilt.UnknownFields; }
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| 212 | set { MessageBeingBuilt.SetUnknownFields(value); }
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| 213 | }
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| 214 | }
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| 215 | } |
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