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using System;
using XUtliPoolLib;
namespace ProtoBuf.Serializers
{
internal sealed class EnumSerializer : IProtoSerializer
{
public Type ExpectedType
{
get
{
return this.enumType;
}
}
bool IProtoSerializer.RequiresOldValue
{
get
{
return false;
}
}
bool IProtoSerializer.ReturnsValue
{
get
{
return true;
}
}
private readonly Type enumType;
private readonly EnumSerializer.EnumPair[] map;
public struct EnumPair
{
public readonly object RawValue;
public readonly Enum TypedValue;
public readonly int WireValue;
public EnumPair(int wireValue, object raw, Type type)
{
this.WireValue = wireValue;
this.RawValue = raw;
this.TypedValue = (Enum)Enum.ToObject(type, raw);
}
}
public EnumSerializer(Type enumType, EnumSerializer.EnumPair[] map)
{
bool flag = enumType == null;
if (flag)
{
throw new ArgumentNullException("enumType");
}
this.enumType = enumType;
this.map = map;
bool flag2 = map != null;
if (flag2)
{
for (int i = 1; i < map.Length; i++)
{
for (int j = 0; j < i; j++)
{
bool flag3 = map[i].WireValue == map[j].WireValue && !object.Equals(map[i].RawValue, map[j].RawValue);
if (flag3)
{
throw new ProtoException("Multiple enums with wire-value " + map[i].WireValue.ToString());
}
bool flag4 = object.Equals(map[i].RawValue, map[j].RawValue) && map[i].WireValue != map[j].WireValue;
if (flag4)
{
throw new ProtoException("Multiple enums with deserialized-value " + map[i].RawValue);
}
}
}
}
}
private ProtoTypeCode GetTypeCode()
{
Type underlyingType = Helpers.GetUnderlyingType(this.enumType);
bool flag = underlyingType == null;
if (flag)
{
underlyingType = this.enumType;
}
return Helpers.GetTypeCode(underlyingType);
}
private int EnumToWire(object value)
{
int result;
switch (this.GetTypeCode())
{
case ProtoTypeCode.SByte:
result = (int)((sbyte)value);
break;
case ProtoTypeCode.Byte:
result = (int)((byte)value);
break;
case ProtoTypeCode.Int16:
result = (int)((short)value);
break;
case ProtoTypeCode.UInt16:
result = (int)((ushort)value);
break;
case ProtoTypeCode.Int32:
result = (int)value;
break;
case ProtoTypeCode.UInt32:
result = (int)((uint)value);
break;
case ProtoTypeCode.Int64:
result = (int)((long)value);
break;
case ProtoTypeCode.UInt64:
result = (int)((ulong)value);
break;
default:
throw new InvalidOperationException();
}
return result;
}
private object WireToEnum(int value)
{
object result;
switch (this.GetTypeCode())
{
case ProtoTypeCode.SByte:
result = Enum.ToObject(this.enumType, (sbyte)value);
break;
case ProtoTypeCode.Byte:
result = Enum.ToObject(this.enumType, (byte)value);
break;
case ProtoTypeCode.Int16:
result = Enum.ToObject(this.enumType, (short)value);
break;
case ProtoTypeCode.UInt16:
result = Enum.ToObject(this.enumType, (ushort)value);
break;
case ProtoTypeCode.Int32:
result = Enum.ToObject(this.enumType, value);
break;
case ProtoTypeCode.UInt32:
result = Enum.ToObject(this.enumType, (uint)value);
break;
case ProtoTypeCode.Int64:
result = Enum.ToObject(this.enumType, (long)value);
break;
case ProtoTypeCode.UInt64:
result = Enum.ToObject(this.enumType, (ulong)((long)value));
break;
default:
throw new InvalidOperationException();
}
return result;
}
public object Read(object value, ProtoReader source)
{
Helpers.DebugAssert(value == null);
int num = source.ReadInt32();
bool flag = this.map == null;
object result;
if (flag)
{
result = this.WireToEnum(num);
}
else
{
for (int i = 0; i < this.map.Length; i++)
{
bool flag2 = this.map[i].WireValue == num;
if (flag2)
{
return this.map[i].TypedValue;
}
}
XSingleton<XDebug>.singleton.AddWarningLog("Warning: No ", (this.ExpectedType == null) ? "<null>" : this.ExpectedType.FullName, " enum is mapped to the wire-value ", num.ToString(), null, null);
result = this.WireToEnum(num);
}
return result;
}
public void Write(object value, ProtoWriter dest)
{
bool flag = this.map == null;
if (flag)
{
ProtoWriter.WriteInt32(this.EnumToWire(value), dest);
}
else
{
for (int i = 0; i < this.map.Length; i++)
{
bool flag2 = object.Equals(this.map[i].TypedValue, value);
if (flag2)
{
ProtoWriter.WriteInt32(this.map[i].WireValue, dest);
return;
}
}
XSingleton<XDebug>.singleton.AddErrorLog("Warning: No wire-value is mapped to the enum ", (value == null) ? "<null>" : (value.GetType().FullName + "." + value.ToString()), " at position ", (dest == null) ? "unknown" : ProtoWriter.GetPosition(dest).ToString(), null, null);
ProtoWriter.WriteInt32(this.EnumToWire(value), dest);
}
}
}
}
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