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Diffstat (limited to 'csharp/src/ProtocolBuffers/AbstractMessage.cs')
| -rw-r--r-- | csharp/src/ProtocolBuffers/AbstractMessage.cs | 291 |
1 files changed, 291 insertions, 0 deletions
diff --git a/csharp/src/ProtocolBuffers/AbstractMessage.cs b/csharp/src/ProtocolBuffers/AbstractMessage.cs new file mode 100644 index 00000000..16c8c786 --- /dev/null +++ b/csharp/src/ProtocolBuffers/AbstractMessage.cs @@ -0,0 +1,291 @@ +#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.Collections;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using Google.ProtocolBuffers.Collections;
+using Google.ProtocolBuffers.Descriptors;
+
+namespace Google.ProtocolBuffers
+{
+ /// <summary>
+ /// Implementation of the non-generic IMessage interface as far as possible.
+ /// </summary>
+ public abstract partial class AbstractMessage<TMessage, TBuilder> : AbstractMessageLite<TMessage, TBuilder>,
+ IMessage<TMessage, TBuilder>
+ where TMessage : AbstractMessage<TMessage, TBuilder>
+ where TBuilder : AbstractBuilder<TMessage, TBuilder>
+ {
+ /// <summary>
+ /// The serialized size if it's already been computed, or null
+ /// if we haven't computed it yet.
+ /// </summary>
+ private int? memoizedSize = null;
+
+ #region Unimplemented members of IMessage
+
+ public abstract MessageDescriptor DescriptorForType { get; }
+ public abstract IDictionary<FieldDescriptor, object> AllFields { get; }
+ public abstract bool HasField(FieldDescriptor field);
+ public abstract object this[FieldDescriptor field] { get; }
+ public abstract int GetRepeatedFieldCount(FieldDescriptor field);
+ public abstract object this[FieldDescriptor field, int index] { get; }
+ public abstract UnknownFieldSet UnknownFields { get; }
+
+ #endregion
+
+ /// <summary>
+ /// Returns true iff all required fields in the message and all embedded
+ /// messages are set.
+ /// </summary>
+ public override bool IsInitialized
+ {
+ get
+ {
+ // Check that all required fields are present.
+ foreach (FieldDescriptor field in DescriptorForType.Fields)
+ {
+ if (field.IsRequired && !HasField(field))
+ {
+ return false;
+ }
+ }
+
+ // Check that embedded messages are initialized.
+ foreach (KeyValuePair<FieldDescriptor, object> entry in AllFields)
+ {
+ FieldDescriptor field = entry.Key;
+ if (field.MappedType == MappedType.Message)
+ {
+ if (field.IsRepeated)
+ {
+ // We know it's an IList<T>, but not the exact type - so
+ // IEnumerable is the best we can do. (C# generics aren't covariant yet.)
+ foreach (IMessageLite element in (IEnumerable) entry.Value)
+ {
+ if (!element.IsInitialized)
+ {
+ return false;
+ }
+ }
+ }
+ else
+ {
+ if (!((IMessageLite) entry.Value).IsInitialized)
+ {
+ return false;
+ }
+ }
+ }
+ }
+ return true;
+ }
+ }
+
+ public override sealed string ToString()
+ {
+ return TextFormat.PrintToString(this);
+ }
+
+ public override sealed void PrintTo(TextWriter writer)
+ {
+ TextFormat.Print(this, writer);
+ }
+
+ /// <summary>
+ /// Serializes the message and writes it to the given output stream.
+ /// This does not flush or close the stream.
+ /// </summary>
+ /// <remarks>
+ /// Protocol Buffers are not self-delimiting. Therefore, if you write
+ /// any more data to the stream after the message, you must somehow ensure
+ /// that the parser on the receiving end does not interpret this as being
+ /// part of the protocol message. One way of doing this is by writing the size
+ /// of the message before the data, then making sure you limit the input to
+ /// that size when receiving the data. Alternatively, use WriteDelimitedTo(Stream).
+ /// </remarks>
+ public override void WriteTo(ICodedOutputStream output)
+ {
+ foreach (KeyValuePair<FieldDescriptor, object> entry in AllFields)
+ {
+ FieldDescriptor field = entry.Key;
+ if (field.IsRepeated)
+ {
+ // We know it's an IList<T>, but not the exact type - so
+ // IEnumerable is the best we can do. (C# generics aren't covariant yet.)
+ IEnumerable valueList = (IEnumerable) entry.Value;
+ if (field.IsPacked)
+ {
+ output.WritePackedArray(field.FieldType, field.FieldNumber, field.Name, valueList);
+ }
+ else
+ {
+ output.WriteArray(field.FieldType, field.FieldNumber, field.Name, valueList);
+ }
+ }
+ else
+ {
+ output.WriteField(field.FieldType, field.FieldNumber, field.Name, entry.Value);
+ }
+ }
+
+ UnknownFieldSet unknownFields = UnknownFields;
+ if (DescriptorForType.Options.MessageSetWireFormat)
+ {
+ unknownFields.WriteAsMessageSetTo(output);
+ }
+ else
+ {
+ unknownFields.WriteTo(output);
+ }
+ }
+
+ /// <summary>
+ /// Returns the number of bytes required to encode this message.
+ /// The result is only computed on the first call and memoized after that.
+ /// </summary>
+ public override int SerializedSize
+ {
+ get
+ {
+ if (memoizedSize != null)
+ {
+ return memoizedSize.Value;
+ }
+
+ int size = 0;
+ foreach (KeyValuePair<FieldDescriptor, object> entry in AllFields)
+ {
+ FieldDescriptor field = entry.Key;
+ if (field.IsRepeated)
+ {
+ IEnumerable valueList = (IEnumerable) entry.Value;
+ if (field.IsPacked)
+ {
+ int dataSize = 0;
+ foreach (object element in valueList)
+ {
+ dataSize += CodedOutputStream.ComputeFieldSizeNoTag(field.FieldType, element);
+ }
+ size += dataSize;
+ size += CodedOutputStream.ComputeTagSize(field.FieldNumber);
+ size += CodedOutputStream.ComputeRawVarint32Size((uint) dataSize);
+ }
+ else
+ {
+ foreach (object element in valueList)
+ {
+ size += CodedOutputStream.ComputeFieldSize(field.FieldType, field.FieldNumber, element);
+ }
+ }
+ }
+ else
+ {
+ size += CodedOutputStream.ComputeFieldSize(field.FieldType, field.FieldNumber, entry.Value);
+ }
+ }
+
+ UnknownFieldSet unknownFields = UnknownFields;
+ if (DescriptorForType.Options.MessageSetWireFormat)
+ {
+ size += unknownFields.SerializedSizeAsMessageSet;
+ }
+ else
+ {
+ size += unknownFields.SerializedSize;
+ }
+
+ memoizedSize = size;
+ return size;
+ }
+ }
+
+ /// <summary>
+ /// Compares the specified object with this message for equality.
+ /// Returns true iff the given object is a message of the same type
+ /// (as defined by DescriptorForType) and has identical values
+ /// for all its fields.
+ /// </summary>
+ public override bool Equals(object other)
+ {
+ if (other == this)
+ {
+ return true;
+ }
+ IMessage otherMessage = other as IMessage;
+ if (otherMessage == null || otherMessage.DescriptorForType != DescriptorForType)
+ {
+ return false;
+ }
+ return Dictionaries.Equals(AllFields, otherMessage.AllFields) &&
+ UnknownFields.Equals(otherMessage.UnknownFields);
+ }
+
+ /// <summary>
+ /// Returns the hash code value for this message.
+ /// TODO(jonskeet): Specify the hash algorithm, but better than the Java one!
+ /// </summary>
+ public override int GetHashCode()
+ {
+ int hash = 41;
+ hash = (19*hash) + DescriptorForType.GetHashCode();
+ hash = (53*hash) + Dictionaries.GetHashCode(AllFields);
+ hash = (29*hash) + UnknownFields.GetHashCode();
+ return hash;
+ }
+
+ #region Explicit Members
+
+ IBuilder IMessage.WeakCreateBuilderForType()
+ {
+ return CreateBuilderForType();
+ }
+
+ IBuilder IMessage.WeakToBuilder()
+ {
+ return ToBuilder();
+ }
+
+ IMessage IMessage.WeakDefaultInstanceForType
+ {
+ get { return DefaultInstanceForType; }
+ }
+
+ #endregion
+ }
+}
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