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-rw-r--r--csharp/ProtocolBuffers/FieldAccess/SingleMessageAccessor.cs66
1 files changed, 0 insertions, 66 deletions
diff --git a/csharp/ProtocolBuffers/FieldAccess/SingleMessageAccessor.cs b/csharp/ProtocolBuffers/FieldAccess/SingleMessageAccessor.cs
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--- a/csharp/ProtocolBuffers/FieldAccess/SingleMessageAccessor.cs
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-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.
-// http://code.google.com/p/protobuf/
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-using System;
-using System.Reflection;
-
-namespace Google.ProtocolBuffers.FieldAccess {
- /// <summary>
- /// Accessor for fields representing a non-repeated message value.
- /// </summary>
- internal sealed class SingleMessageAccessor<TMessage, TBuilder> : SinglePrimitiveAccessor<TMessage, TBuilder>
- where TMessage : IMessage<TMessage, TBuilder>
- where TBuilder : IBuilder<TMessage, TBuilder> {
-
- /// <summary>
- /// The static method to create a builder for the property type. For example,
- /// in a message type "Foo", a field called "bar" might be of type "Baz". This
- /// method is Baz.CreateBuilder.
- /// </summary>
- private readonly Func<IBuilder> createBuilderDelegate;
-
- internal SingleMessageAccessor(string name) : base(name) {
- MethodInfo createBuilderMethod = ClrType.GetMethod("CreateBuilder", Type.EmptyTypes);
- if (createBuilderMethod == null) {
- throw new ArgumentException("No public static CreateBuilder method declared in " + ClrType.Name);
- }
- createBuilderDelegate = ReflectionUtil.CreateStaticUpcastDelegate(createBuilderMethod);
- }
-
- /// <summary>
- /// Creates a message of the appropriate CLR type from the given value,
- /// which may already be of the right type or may be a dynamic message.
- /// </summary>
- private object CoerceType(object value) {
-
- // If it's already of the right type, we're done
- if (ClrType.IsInstanceOfType(value)) {
- return value;
- }
-
- // No... so let's create a builder of the right type, and merge the value in.
- IMessage message = (IMessage) value;
- return CreateBuilder().WeakMergeFrom(message).WeakBuild();
- }
-
- public override void SetValue(TBuilder builder, object value) {
- base.SetValue(builder, CoerceType(value));
- }
-
- public override IBuilder CreateBuilder() {
- return createBuilderDelegate();
- }
- }
-} \ No newline at end of file