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jellyfin/src/Jellyfin.Extensions/Json/Converters/JsonNullableStructConverter.cs

31 lines
1.0 KiB

using System;
using System.Text.Json;
using System.Text.Json.Serialization;
namespace Jellyfin.Extensions.Json.Converters
{
/// <summary>
/// Converts a nullable struct or value to/from JSON.
/// Required - some clients send an empty string.
/// </summary>
/// <typeparam name="TStruct">The struct type.</typeparam>
public class JsonNullableStructConverter<TStruct> : JsonConverter<TStruct?>
where TStruct : struct
{
/// <inheritdoc />
public override TStruct? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
{
if (reader.IsEmptyString())
{
return null;
}
return JsonSerializer.Deserialize<TStruct>(ref reader, options);
}
/// <inheritdoc />
public override void Write(Utf8JsonWriter writer, TStruct? value, JsonSerializerOptions options)
=> JsonSerializer.Serialize(writer, value!.Value, options); // null got handled higher up the call stack
}
}