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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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