using System.Runtime.CompilerServices; using System.Text.Json.Schema; using System.Text.Json.Serialization.Metadata; namespace System.Text.Json.Serialization.Converters { internal sealed class JsonMetadataServicesConverter<T> : JsonResumableConverter<T> { internal JsonConverter<T> Converter { get; } internal override Type KeyType => Converter.KeyType; internal override Type ElementType => Converter.ElementType; internal override JsonConverter NullableElementConverter => Converter.NullableElementConverter; public override bool HandleNull { get; } internal override bool ConstructorIsParameterized => Converter.ConstructorIsParameterized; internal override bool SupportsCreateObjectDelegate => Converter.SupportsCreateObjectDelegate; internal override bool CanHaveMetadata => Converter.CanHaveMetadata; internal override bool CanPopulate => Converter.CanPopulate; public JsonMetadataServicesConverter(JsonConverter<T> converter) { Converter = converter; base.ConverterStrategy = converter.ConverterStrategy; base.IsInternalConverter = converter.IsInternalConverter; base.IsInternalConverterForNumberType = converter.IsInternalConverterForNumberType; base.CanBePolymorphic = converter.CanBePolymorphic; base.HandleNullOnRead = converter.HandleNullOnRead; base.HandleNullOnWrite = converter.HandleNullOnWrite; HandleNull = converter.HandleNullOnWrite; } internal override bool OnTryRead(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options, [System.Runtime.CompilerServices.ScopedRef] ref ReadStack state, out T value) { return Converter.OnTryRead(ref reader, typeToConvert, options, ref state, out value); } internal override bool OnTryWrite(Utf8JsonWriter writer, T value, JsonSerializerOptions options, ref WriteStack state) { JsonTypeInfo jsonTypeInfo = state.Current.JsonTypeInfo; if (!state.SupportContinuation && jsonTypeInfo.CanUseSerializeHandler && !JsonHelpers.RequiresSpecialNumberHandlingOnWrite(state.Current.NumberHandling) && !state.CurrentContainsMetadata) { ((JsonTypeInfo<T>)jsonTypeInfo).SerializeHandler(writer, value); return true; } return Converter.OnTryWrite(writer, value, options, ref state); } internal override void ConfigureJsonTypeInfo(JsonTypeInfo jsonTypeInfo, JsonSerializerOptions options) { Converter.ConfigureJsonTypeInfo(jsonTypeInfo, options); } internal override JsonSchema GetSchema(JsonNumberHandling numberHandling) { return Converter.GetSchema(numberHandling); } } }