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source: trunk/HeuristicLab.ExtLibs/HeuristicLab.ProtobufCS/2.4.1/ProtobufCS/src/ProtocolBuffers/FieldAccess/SingleEnumAccessor.cs

Last change on this file was 8295, checked in by abeham, 12 years ago

#1897:

  • Removed protocol buffers 0.9.1
  • Added protocol buffers 2.4.1
  • Updated proto processing command
File size: 3.4 KB
Line 
1// Protocol Buffers - Google's data interchange format
2// Copyright 2008 Google Inc.  All rights reserved.
3// http://github.com/jskeet/dotnet-protobufs/
4// Original C++/Java/Python code:
5// http://code.google.com/p/protobuf/
6//
7// Redistribution and use in source and binary forms, with or without
8// modification, are permitted provided that the following conditions are
9// met:
10//
11//     * Redistributions of source code must retain the above copyright
12// notice, this list of conditions and the following disclaimer.
13//     * Redistributions in binary form must reproduce the above
14// copyright notice, this list of conditions and the following disclaimer
15// in the documentation and/or other materials provided with the
16// distribution.
17//     * Neither the name of Google Inc. nor the names of its
18// contributors may be used to endorse or promote products derived from
19// this software without specific prior written permission.
20//
21// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32using Google.ProtocolBuffers.Descriptors;
33
34namespace Google.ProtocolBuffers.FieldAccess
35{
36    /// <summary>
37    /// Accessor for fields representing a non-repeated enum value.
38    /// </summary>
39    internal sealed class SingleEnumAccessor<TMessage, TBuilder> : SinglePrimitiveAccessor<TMessage, TBuilder>
40        where TMessage : IMessage<TMessage, TBuilder>
41        where TBuilder : IBuilder<TMessage, TBuilder>
42    {
43        private readonly EnumDescriptor enumDescriptor;
44
45        internal SingleEnumAccessor(FieldDescriptor field, string name) : base(name)
46        {
47            enumDescriptor = field.EnumType;
48        }
49
50        /// <summary>
51        /// Returns an EnumValueDescriptor representing the value in the builder.
52        /// Note that if an enum has multiple values for the same number, the descriptor
53        /// for the first value with that number will be returned.
54        /// </summary>
55        public override object GetValue(TMessage message)
56        {
57            // Note: This relies on the fact that the CLR allows unboxing from an enum to
58            // its underlying value
59            int rawValue = (int) base.GetValue(message);
60            return enumDescriptor.FindValueByNumber(rawValue);
61        }
62
63        /// <summary>
64        /// Sets the value as an enum (via an int) in the builder,
65        /// from an EnumValueDescriptor parameter.
66        /// </summary>
67        public override void SetValue(TBuilder builder, object value)
68        {
69            ThrowHelper.ThrowIfNull(value, "value");
70            EnumValueDescriptor valueDescriptor = (EnumValueDescriptor) value;
71            base.SetValue(builder, valueDescriptor.Number);
72        }
73    }
74}
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