ModernUO/Projects/Server/Json/Converters/JsonNullableEnumConverter.cs
Kamron Batman 98ce65083a
fix(core): Updates expansion and map configurations (fixes map issues) (#570)
- [X] Adds question about expansion at start of server
- [X] Adds question about client version to determine old have and map diffs
- [X] Adds config setting "maps.enablePre6000Trammel"
- [X] Rearranges some of the loading order.
- [X] Added support for deserializing nullable enums from json

TODO:
Expand the nullable enums deserialization factory to work with any type by pulling the factory and creating an instance of the converter.
2021-04-14 01:45:18 -07:00

51 lines
2 KiB
C#

/*************************************************************************
* ModernUO *
* Copyright 2019-2021 - ModernUO Development Team *
* Email: hi@modernuo.com *
* File: JsonNullableEnumConverter.cs *
* *
* This program is free software: you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
*************************************************************************/
using System;
using System.Text.Json;
using System.Text.Json.Serialization;
namespace Server.Json.Converters
{
class JsonNullableEnumConverter<T> : JsonConverter<T?> where T : struct, Enum
{
private readonly JsonConverter<T> _converter;
public JsonNullableEnumConverter(JsonConverter<T> converter) => _converter = converter;
public override T? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
{
if (reader.TokenType == JsonTokenType.Null)
{
reader.Read();
return null;
}
return _converter.Read(ref reader, typeof(T), options);
}
public override void Write(Utf8JsonWriter writer, T? value, JsonSerializerOptions options)
{
if (value == null)
{
writer.WriteNullValue();
}
else
{
_converter.Write(writer, value.Value, options);
}
}
}
}