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author | Jan Tattermusch <jtattermusch@users.noreply.github.com> | 2015-04-17 14:15:52 -0700 |
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committer | Jan Tattermusch <jtattermusch@users.noreply.github.com> | 2015-04-17 14:15:52 -0700 |
commit | 01c8c35ca3d3424a9473dd22ea2456933b3e8d36 (patch) | |
tree | de582cb9ef3e449f24015dec09f80e998806b26a /csharp/src/ProtocolBuffers/Descriptors/FieldMappingAttribute.cs | |
parent | 813d6d652d8091e9365bfbd01efb5f2ee8bdfbce (diff) | |
parent | 1eab56aee8dddcb656db67d9fb87a8cc6a2ac112 (diff) | |
download | protobuf-01c8c35ca3d3424a9473dd22ea2456933b3e8d36.tar.gz protobuf-01c8c35ca3d3424a9473dd22ea2456933b3e8d36.tar.bz2 protobuf-01c8c35ca3d3424a9473dd22ea2456933b3e8d36.zip |
Merge pull request #2 from jtattermusch/csharp_protobuf_imported
Pulling protobuf-csharp-port into csharp/ directory
Diffstat (limited to 'csharp/src/ProtocolBuffers/Descriptors/FieldMappingAttribute.cs')
-rw-r--r-- | csharp/src/ProtocolBuffers/Descriptors/FieldMappingAttribute.cs | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/csharp/src/ProtocolBuffers/Descriptors/FieldMappingAttribute.cs b/csharp/src/ProtocolBuffers/Descriptors/FieldMappingAttribute.cs new file mode 100644 index 00000000..fc58d046 --- /dev/null +++ b/csharp/src/ProtocolBuffers/Descriptors/FieldMappingAttribute.cs @@ -0,0 +1,86 @@ +// 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.
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+using Google.ProtocolBuffers.Collections;
+
+namespace Google.ProtocolBuffers.Descriptors
+{
+ /// <summary>
+ /// Defined specifically for the <see cref="FieldType" /> enumeration,
+ /// this allows each field type to specify the mapped type and wire type.
+ /// </summary>
+ [CLSCompliant(false)]
+ [AttributeUsage(AttributeTargets.Field)]
+ public sealed class FieldMappingAttribute : Attribute
+ {
+ public FieldMappingAttribute(MappedType mappedType, WireFormat.WireType wireType)
+ {
+ MappedType = mappedType;
+ WireType = wireType;
+ }
+
+ public MappedType MappedType { get; private set; }
+ public WireFormat.WireType WireType { get; private set; }
+
+
+ /// <summary>
+ /// Immutable mapping from field type to mapped type. Built using the attributes on
+ /// FieldType values.
+ /// </summary>
+ private static readonly IDictionary<FieldType, FieldMappingAttribute> FieldTypeToMappedTypeMap = MapFieldTypes();
+
+ private static IDictionary<FieldType, FieldMappingAttribute> MapFieldTypes()
+ {
+ var map = new Dictionary<FieldType, FieldMappingAttribute>();
+ foreach (FieldInfo field in typeof(FieldType).GetFields(BindingFlags.Static | BindingFlags.Public))
+ {
+ FieldType fieldType = (FieldType) field.GetValue(null);
+ FieldMappingAttribute mapping =
+ (FieldMappingAttribute) field.GetCustomAttributes(typeof(FieldMappingAttribute), false)[0];
+ map[fieldType] = mapping;
+ }
+ return Dictionaries.AsReadOnly(map);
+ }
+
+ internal static MappedType MappedTypeFromFieldType(FieldType type)
+ {
+ return FieldTypeToMappedTypeMap[type].MappedType;
+ }
+
+ internal static WireFormat.WireType WireTypeFromFieldType(FieldType type, bool packed)
+ {
+ return packed ? WireFormat.WireType.LengthDelimited : FieldTypeToMappedTypeMap[type].WireType;
+ }
+ }
+}
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