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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;
using System.Collections.Generic;
using Google.ProtocolBuffers.Collections;
using Google.ProtocolBuffers.Descriptors;
namespace Google.ProtocolBuffers.FieldAccess {
/// <summary>
/// Accessor for a repeated enum field.
/// </summary>
internal sealed class RepeatedEnumAccessor : RepeatedPrimitiveAccessor {
private readonly EnumDescriptor enumDescriptor;
internal RepeatedEnumAccessor(FieldDescriptor field, string name, Type messageType, Type builderType)
: base(name, messageType, builderType) {
enumDescriptor = field.EnumType;
}
public override object GetValue(IMessage message) {
List<EnumValueDescriptor> ret = new List<EnumValueDescriptor>();
foreach (int rawValue in (IEnumerable) base.GetValue(message)) {
ret.Add(enumDescriptor.FindValueByNumber(rawValue));
}
return Lists.AsReadOnly(ret);
}
public override object GetRepeatedValue(IMessage message, int index) {
// Note: This relies on the fact that the CLR allows unboxing from an enum to
// its underlying value
int rawValue = (int) base.GetRepeatedValue(message, index);
return enumDescriptor.FindValueByNumber(rawValue);
}
public override void AddRepeated(IBuilder builder, object value) {
base.AddRepeated(builder, ((EnumValueDescriptor) value).Number);
}
public override void SetRepeated(IBuilder builder, int index, object value) {
base.SetRepeated(builder, index, ((EnumValueDescriptor) value).Number);
}
}
}
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