private static void ResolveEnumValues(EnumDefinition enumDef) { if (!enumDef.Options.Proto) { return; } if (enumDef.UnderlyingType.NetType != "int") { return; } var nextValue = (int?)0; foreach (var member in enumDef.Members) { member.ProtoValue = string.IsNullOrEmpty(member.Value) ? nextValue : enumDef.GetValidUnderlyingValue(member.Value) as int?; nextValue = member.ProtoValue + 1; } }