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Diffstat (limited to 'csharp/src/ProtocolBuffers/DynamicMessage.cs')
| -rw-r--r-- | csharp/src/ProtocolBuffers/DynamicMessage.cs | 512 |
1 files changed, 512 insertions, 0 deletions
diff --git a/csharp/src/ProtocolBuffers/DynamicMessage.cs b/csharp/src/ProtocolBuffers/DynamicMessage.cs new file mode 100644 index 00000000..e39efb12 --- /dev/null +++ b/csharp/src/ProtocolBuffers/DynamicMessage.cs @@ -0,0 +1,512 @@ +#region Copyright notice and license
+
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc. All rights reserved.
+// http://github.com/jskeet/dotnet-protobufs/
+// Original C++/Java/Python code:
+// http://code.google.com/p/protobuf/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using Google.ProtocolBuffers.Descriptors;
+
+namespace Google.ProtocolBuffers
+{
+ /// <summary>
+ /// An implementation of IMessage that can represent arbitrary types, given a MessageaDescriptor.
+ /// </summary>
+ public sealed partial class DynamicMessage : AbstractMessage<DynamicMessage, DynamicMessage.Builder>
+ {
+ private readonly MessageDescriptor type;
+ private readonly FieldSet fields;
+ private readonly UnknownFieldSet unknownFields;
+ private int memoizedSize = -1;
+
+ /// <summary>
+ /// Creates a DynamicMessage with the given FieldSet.
+ /// </summary>
+ /// <param name="type"></param>
+ /// <param name="fields"></param>
+ /// <param name="unknownFields"></param>
+ private DynamicMessage(MessageDescriptor type, FieldSet fields, UnknownFieldSet unknownFields)
+ {
+ this.type = type;
+ this.fields = fields;
+ this.unknownFields = unknownFields;
+ }
+
+ /// <summary>
+ /// Returns a DynamicMessage representing the default instance of the given type.
+ /// </summary>
+ /// <param name="type"></param>
+ /// <returns></returns>
+ public static DynamicMessage GetDefaultInstance(MessageDescriptor type)
+ {
+ return new DynamicMessage(type, FieldSet.DefaultInstance, UnknownFieldSet.DefaultInstance);
+ }
+
+ /// <summary>
+ /// Parses a message of the given type from the given stream.
+ /// </summary>
+ public static DynamicMessage ParseFrom(MessageDescriptor type, ICodedInputStream input)
+ {
+ Builder builder = CreateBuilder(type);
+ Builder dynamicBuilder = builder.MergeFrom(input);
+ return dynamicBuilder.BuildParsed();
+ }
+
+ /// <summary>
+ /// Parse a message of the given type from the given stream and extension registry.
+ /// </summary>
+ /// <param name="type"></param>
+ /// <param name="input"></param>
+ /// <param name="extensionRegistry"></param>
+ /// <returns></returns>
+ public static DynamicMessage ParseFrom(MessageDescriptor type, ICodedInputStream input,
+ ExtensionRegistry extensionRegistry)
+ {
+ Builder builder = CreateBuilder(type);
+ Builder dynamicBuilder = builder.MergeFrom(input, extensionRegistry);
+ return dynamicBuilder.BuildParsed();
+ }
+
+ /// <summary>
+ /// Parses a message of the given type from the given stream.
+ /// </summary>
+ public static DynamicMessage ParseFrom(MessageDescriptor type, Stream input)
+ {
+ Builder builder = CreateBuilder(type);
+ Builder dynamicBuilder = builder.MergeFrom(input);
+ return dynamicBuilder.BuildParsed();
+ }
+
+ /// <summary>
+ /// Parse a message of the given type from the given stream and extension registry.
+ /// </summary>
+ /// <param name="type"></param>
+ /// <param name="input"></param>
+ /// <param name="extensionRegistry"></param>
+ /// <returns></returns>
+ public static DynamicMessage ParseFrom(MessageDescriptor type, Stream input, ExtensionRegistry extensionRegistry)
+ {
+ Builder builder = CreateBuilder(type);
+ Builder dynamicBuilder = builder.MergeFrom(input, extensionRegistry);
+ return dynamicBuilder.BuildParsed();
+ }
+
+ /// <summary>
+ /// Parse <paramref name="data"/> as a message of the given type and return it.
+ /// </summary>
+ public static DynamicMessage ParseFrom(MessageDescriptor type, ByteString data)
+ {
+ Builder builder = CreateBuilder(type);
+ Builder dynamicBuilder = builder.MergeFrom(data);
+ return dynamicBuilder.BuildParsed();
+ }
+
+ /// <summary>
+ /// Parse <paramref name="data"/> as a message of the given type and return it.
+ /// </summary>
+ public static DynamicMessage ParseFrom(MessageDescriptor type, ByteString data,
+ ExtensionRegistry extensionRegistry)
+ {
+ Builder builder = CreateBuilder(type);
+ Builder dynamicBuilder = builder.MergeFrom(data, extensionRegistry);
+ return dynamicBuilder.BuildParsed();
+ }
+
+ /// <summary>
+ /// Parse <paramref name="data"/> as a message of the given type and return it.
+ /// </summary>
+ public static DynamicMessage ParseFrom(MessageDescriptor type, byte[] data)
+ {
+ Builder builder = CreateBuilder(type);
+ Builder dynamicBuilder = builder.MergeFrom(data);
+ return dynamicBuilder.BuildParsed();
+ }
+
+ /// <summary>
+ /// Parse <paramref name="data"/> as a message of the given type and return it.
+ /// </summary>
+ public static DynamicMessage ParseFrom(MessageDescriptor type, byte[] data, ExtensionRegistry extensionRegistry)
+ {
+ Builder builder = CreateBuilder(type);
+ Builder dynamicBuilder = builder.MergeFrom(data, extensionRegistry);
+ return dynamicBuilder.BuildParsed();
+ }
+
+ /// <summary>
+ /// Constructs a builder for the given type.
+ /// </summary>
+ public static Builder CreateBuilder(MessageDescriptor type)
+ {
+ return new Builder(type);
+ }
+
+ /// <summary>
+ /// Constructs a builder for a message of the same type as <paramref name="prototype"/>,
+ /// and initializes it with the same contents.
+ /// </summary>
+ /// <param name="prototype"></param>
+ /// <returns></returns>
+ public static Builder CreateBuilder(IMessage prototype)
+ {
+ return new Builder(prototype.DescriptorForType).MergeFrom(prototype);
+ }
+
+ // -----------------------------------------------------------------
+ // Implementation of IMessage interface.
+
+ public override MessageDescriptor DescriptorForType
+ {
+ get { return type; }
+ }
+
+ public override DynamicMessage DefaultInstanceForType
+ {
+ get { return GetDefaultInstance(type); }
+ }
+
+ public override IDictionary<FieldDescriptor, object> AllFields
+ {
+ get { return fields.AllFieldDescriptors; }
+ }
+
+ public override bool HasField(FieldDescriptor field)
+ {
+ VerifyContainingType(field);
+ return fields.HasField(field);
+ }
+
+ public override object this[FieldDescriptor field]
+ {
+ get
+ {
+ VerifyContainingType(field);
+ object result = fields[field];
+ if (result == null)
+ {
+ result = GetDefaultInstance(field.MessageType);
+ }
+ return result;
+ }
+ }
+
+ public override int GetRepeatedFieldCount(FieldDescriptor field)
+ {
+ VerifyContainingType(field);
+ return fields.GetRepeatedFieldCount(field);
+ }
+
+ public override object this[FieldDescriptor field, int index]
+ {
+ get
+ {
+ VerifyContainingType(field);
+ return fields[field, index];
+ }
+ }
+
+ public override UnknownFieldSet UnknownFields
+ {
+ get { return unknownFields; }
+ }
+
+ public bool Initialized
+ {
+ get { return fields.IsInitializedWithRespectTo(type.Fields); }
+ }
+
+ public override void WriteTo(ICodedOutputStream output)
+ {
+ fields.WriteTo(output);
+ if (type.Options.MessageSetWireFormat)
+ {
+ unknownFields.WriteAsMessageSetTo(output);
+ }
+ else
+ {
+ unknownFields.WriteTo(output);
+ }
+ }
+
+ public override int SerializedSize
+ {
+ get
+ {
+ int size = memoizedSize;
+ if (size != -1)
+ {
+ return size;
+ }
+
+ size = fields.SerializedSize;
+ if (type.Options.MessageSetWireFormat)
+ {
+ size += unknownFields.SerializedSizeAsMessageSet;
+ }
+ else
+ {
+ size += unknownFields.SerializedSize;
+ }
+
+ memoizedSize = size;
+ return size;
+ }
+ }
+
+ public override Builder CreateBuilderForType()
+ {
+ return new Builder(type);
+ }
+
+ public override Builder ToBuilder()
+ {
+ return CreateBuilderForType().MergeFrom(this);
+ }
+
+ /// <summary>
+ /// Verifies that the field is a field of this message.
+ /// </summary>
+ private void VerifyContainingType(FieldDescriptor field)
+ {
+ if (field.ContainingType != type)
+ {
+ throw new ArgumentException("FieldDescriptor does not match message type.");
+ }
+ }
+
+ /// <summary>
+ /// Builder for dynamic messages. Instances are created with DynamicMessage.CreateBuilder.
+ /// </summary>
+ public sealed partial class Builder : AbstractBuilder<DynamicMessage, Builder>
+ {
+ private readonly MessageDescriptor type;
+ private FieldSet fields;
+ private UnknownFieldSet unknownFields;
+
+ internal Builder(MessageDescriptor type)
+ {
+ this.type = type;
+ this.fields = FieldSet.CreateInstance();
+ this.unknownFields = UnknownFieldSet.DefaultInstance;
+ }
+
+ protected override Builder ThisBuilder
+ {
+ get { return this; }
+ }
+
+ public override Builder Clear()
+ {
+ fields.Clear();
+ return this;
+ }
+
+ public override Builder MergeFrom(IMessage other)
+ {
+ if (other.DescriptorForType != type)
+ {
+ throw new ArgumentException("MergeFrom(IMessage) can only merge messages of the same type.");
+ }
+ fields.MergeFrom(other);
+ MergeUnknownFields(other.UnknownFields);
+ return this;
+ }
+
+ public override Builder MergeFrom(DynamicMessage other)
+ {
+ IMessage downcast = other;
+ return MergeFrom(downcast);
+ }
+
+ public override DynamicMessage Build()
+ {
+ if (fields != null && !IsInitialized)
+ {
+ throw new UninitializedMessageException(new DynamicMessage(type, fields, unknownFields));
+ }
+ return BuildPartial();
+ }
+
+ /// <summary>
+ /// Helper for DynamicMessage.ParseFrom() methods to call. Throws
+ /// InvalidProtocolBufferException
+ /// </summary>
+ /// <returns></returns>
+ internal DynamicMessage BuildParsed()
+ {
+ if (!IsInitialized)
+ {
+ throw new UninitializedMessageException(new DynamicMessage(type, fields, unknownFields)).
+ AsInvalidProtocolBufferException();
+ }
+ return BuildPartial();
+ }
+
+ public override DynamicMessage BuildPartial()
+ {
+ if (fields == null)
+ {
+ throw new InvalidOperationException("Build() has already been called on this Builder.");
+ }
+ fields.MakeImmutable();
+ DynamicMessage result = new DynamicMessage(type, fields, unknownFields);
+ fields = null;
+ unknownFields = null;
+ return result;
+ }
+
+ public override Builder Clone()
+ {
+ Builder result = new Builder(type);
+ result.fields.MergeFrom(fields);
+ return result;
+ }
+
+ public override bool IsInitialized
+ {
+ get { return fields.IsInitializedWithRespectTo(type.Fields); }
+ }
+
+ public override Builder MergeFrom(ICodedInputStream input, ExtensionRegistry extensionRegistry)
+ {
+ UnknownFieldSet.Builder unknownFieldsBuilder = UnknownFieldSet.CreateBuilder(unknownFields);
+ unknownFieldsBuilder.MergeFrom(input, extensionRegistry, this);
+ unknownFields = unknownFieldsBuilder.Build();
+ return this;
+ }
+
+ public override MessageDescriptor DescriptorForType
+ {
+ get { return type; }
+ }
+
+ public override DynamicMessage DefaultInstanceForType
+ {
+ get { return GetDefaultInstance(type); }
+ }
+
+ public override IDictionary<FieldDescriptor, object> AllFields
+ {
+ get { return fields.AllFieldDescriptors; }
+ }
+
+ public override IBuilder CreateBuilderForField(FieldDescriptor field)
+ {
+ VerifyContainingType(field);
+ if (field.MappedType != MappedType.Message)
+ {
+ throw new ArgumentException("CreateBuilderForField is only valid for fields with message type.");
+ }
+ return new Builder(field.MessageType);
+ }
+
+ public override bool HasField(FieldDescriptor field)
+ {
+ VerifyContainingType(field);
+ return fields.HasField(field);
+ }
+
+ public override object this[FieldDescriptor field, int index]
+ {
+ get
+ {
+ VerifyContainingType(field);
+ return fields[field, index];
+ }
+ set
+ {
+ VerifyContainingType(field);
+ fields[field, index] = value;
+ }
+ }
+
+ public override object this[FieldDescriptor field]
+ {
+ get
+ {
+ VerifyContainingType(field);
+ object result = fields[field];
+ if (result == null)
+ {
+ result = GetDefaultInstance(field.MessageType);
+ }
+ return result;
+ }
+ set
+ {
+ VerifyContainingType(field);
+ fields[field] = value;
+ }
+ }
+
+ public override Builder ClearField(FieldDescriptor field)
+ {
+ VerifyContainingType(field);
+ fields.ClearField(field);
+ return this;
+ }
+
+ public override int GetRepeatedFieldCount(FieldDescriptor field)
+ {
+ VerifyContainingType(field);
+ return fields.GetRepeatedFieldCount(field);
+ }
+
+ public override Builder AddRepeatedField(FieldDescriptor field, object value)
+ {
+ VerifyContainingType(field);
+ fields.AddRepeatedField(field, value);
+ return this;
+ }
+
+ public override UnknownFieldSet UnknownFields
+ {
+ get { return unknownFields; }
+ set { unknownFields = value; }
+ }
+
+ /// <summary>
+ /// Verifies that the field is a field of this message.
+ /// </summary>
+ /// <param name="field"></param>
+ private void VerifyContainingType(FieldDescriptor field)
+ {
+ if (field.ContainingType != type)
+ {
+ throw new ArgumentException("FieldDescriptor does not match message type.");
+ }
+ }
+ }
+ }
+}
\ No newline at end of file |