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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.Collections.Generic;
using Google.ProtocolBuffers.Descriptors;
using System.Collections;
namespace Google.ProtocolBuffers {
/// <summary>
/// Class used to represent repeat extensions in generated classes.
/// </summary>
public sealed class GeneratedRepeatExtension<TExtensionElement> : GeneratedExtensionBase<IList<TExtensionElement>> {
private GeneratedRepeatExtension(FieldDescriptor field) : base(field, typeof(TExtensionElement)) {
}
public static GeneratedExtensionBase<IList<TExtensionElement>> CreateInstance(FieldDescriptor descriptor) {
if (!descriptor.IsRepeated) {
throw new ArgumentException("Must call GeneratedRepeatExtension.CreateInstance() for repeated types.");
}
return new GeneratedRepeatExtension<TExtensionElement>(descriptor);
}
/// <summary>
/// Converts the list to the right type.
/// TODO(jonskeet): Check where this is used, and whether we need to convert
/// for primitive types.
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public override object FromReflectionType(object value) {
if (Descriptor.MappedType == MappedType.Message ||
Descriptor.MappedType == MappedType.Enum) {
// Must convert the whole list.
List<TExtensionElement> result = new List<TExtensionElement>();
foreach (object element in (IEnumerable) value) {
result.Add((TExtensionElement) SingularFromReflectionType(element));
}
return result;
} else {
return value;
}
}
}
}
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