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Diffstat (limited to 'src/ProtocolBuffers/AbstractBuilderLite.cs')
-rw-r--r-- | src/ProtocolBuffers/AbstractBuilderLite.cs | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/src/ProtocolBuffers/AbstractBuilderLite.cs b/src/ProtocolBuffers/AbstractBuilderLite.cs new file mode 100644 index 00000000..c5fbf0ce --- /dev/null +++ b/src/ProtocolBuffers/AbstractBuilderLite.cs @@ -0,0 +1,232 @@ +#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; +using System.Collections.Generic; +using System.IO; + +namespace Google.ProtocolBuffers { + /// <summary> + /// Implementation of the non-generic IMessage interface as far as possible. + /// </summary> + public abstract class AbstractBuilderLite<TMessage, TBuilder> : IBuilderLite<TMessage, TBuilder> + where TMessage : AbstractMessageLite<TMessage, TBuilder> + where TBuilder : AbstractBuilderLite<TMessage, TBuilder> { + + protected abstract TBuilder ThisBuilder { get; } + + public abstract bool IsInitialized { get; } + + public abstract TBuilder Clear(); + + public abstract TBuilder Clone(); + + public abstract TMessage Build(); + + public abstract TMessage BuildPartial(); + + public abstract TBuilder MergeFrom(IMessageLite other); + + public abstract TBuilder MergeFrom(CodedInputStream input, ExtensionRegistry extensionRegistry); + + public abstract TMessage DefaultInstanceForType { get; } + + #region IBuilderLite<TMessage,TBuilder> Members + + public virtual TBuilder MergeFrom(CodedInputStream input) { + return MergeFrom(input, ExtensionRegistry.CreateInstance()); + } + + public TBuilder MergeDelimitedFrom(Stream input) { + return MergeDelimitedFrom(input, ExtensionRegistry.CreateInstance()); + } + + public TBuilder MergeDelimitedFrom(Stream input, ExtensionRegistry extensionRegistry) { + int size = (int)CodedInputStream.ReadRawVarint32(input); + Stream limitedStream = new LimitedInputStream(input, size); + return MergeFrom(limitedStream, extensionRegistry); + } + + public TBuilder MergeFrom(ByteString data) { + return MergeFrom(data, ExtensionRegistry.CreateInstance()); + } + + public TBuilder MergeFrom(ByteString data, ExtensionRegistry extensionRegistry) { + CodedInputStream input = data.CreateCodedInput(); + MergeFrom(input, extensionRegistry); + input.CheckLastTagWas(0); + return ThisBuilder; + } + + public TBuilder MergeFrom(byte[] data) { + CodedInputStream input = CodedInputStream.CreateInstance(data); + MergeFrom(input); + input.CheckLastTagWas(0); + return ThisBuilder; + } + + public TBuilder MergeFrom(byte[] data, ExtensionRegistry extensionRegistry) { + CodedInputStream input = CodedInputStream.CreateInstance(data); + MergeFrom(input, extensionRegistry); + input.CheckLastTagWas(0); + return ThisBuilder; + } + + public TBuilder MergeFrom(Stream input) { + CodedInputStream codedInput = CodedInputStream.CreateInstance(input); + MergeFrom(codedInput); + codedInput.CheckLastTagWas(0); + return ThisBuilder; + } + + public TBuilder MergeFrom(Stream input, ExtensionRegistry extensionRegistry) { + CodedInputStream codedInput = CodedInputStream.CreateInstance(input); + MergeFrom(codedInput, extensionRegistry); + codedInput.CheckLastTagWas(0); + return ThisBuilder; + } + + #endregion + #region Explicit definitions + + IBuilderLite IBuilderLite.WeakClear() { + return Clear(); + } + + IBuilderLite IBuilderLite.WeakMergeFrom(IMessageLite message) { + return MergeFrom(message); + } + + IBuilderLite IBuilderLite.WeakMergeFrom(ByteString data) { + return MergeFrom(data); + } + + IBuilderLite IBuilderLite.WeakMergeFrom(ByteString data, ExtensionRegistry registry) { + return MergeFrom(data, registry); + } + + IBuilderLite IBuilderLite.WeakMergeFrom(CodedInputStream input) { + return MergeFrom(input); + } + + IBuilderLite IBuilderLite.WeakMergeFrom(CodedInputStream input, ExtensionRegistry registry) { + return MergeFrom(input, registry); + } + + IMessageLite IBuilderLite.WeakBuild() { + return Build(); + } + + IMessageLite IBuilderLite.WeakBuildPartial() { + return BuildPartial(); + } + + IBuilderLite IBuilderLite.WeakClone() { + return Clone(); + } + + IMessageLite IBuilderLite.WeakDefaultInstanceForType { + get { return DefaultInstanceForType; } + } + + #endregion + #region LimitedInputStream + /// <summary> + /// Stream implementation which proxies another stream, only allowing a certain amount + /// of data to be read. Note that this is only used to read delimited streams, so it + /// doesn't attempt to implement everything. + /// </summary> + private class LimitedInputStream : Stream { + + private readonly Stream proxied; + private int bytesLeft; + + internal LimitedInputStream(Stream proxied, int size) { + this.proxied = proxied; + bytesLeft = size; + } + + public override bool CanRead { + get { return true; } + } + + public override bool CanSeek { + get { return false; } + } + + public override bool CanWrite { + get { return false; } + } + + public override void Flush() { + } + + public override long Length { + get { throw new NotSupportedException(); } + } + + public override long Position { + get { + throw new NotSupportedException(); + } + set { + throw new NotSupportedException(); + } + } + + public override int Read(byte[] buffer, int offset, int count) { + if (bytesLeft > 0) { + int bytesRead = proxied.Read(buffer, offset, Math.Min(bytesLeft, count)); + bytesLeft -= bytesRead; + return bytesRead; + } + return 0; + } + + public override long Seek(long offset, SeekOrigin origin) { + throw new NotSupportedException(); + } + + public override void SetLength(long value) { + throw new NotSupportedException(); + } + + public override void Write(byte[] buffer, int offset, int count) { + throw new NotSupportedException(); + } + } + #endregion + } +} |