internal static JsonConverter GetConverterForType(Type typeToConvert, JsonSerializerOptions options, bool resolveJsonConverterAttribute = true)
{
RootDefaultInstance(); // Ensure default converters are rooted.
// Priority 1: Attempt to get custom converter from the Converters list.
JsonConverter?converter = options.GetConverterFromList(typeToConvert);
// Priority 2: Attempt to get converter from [JsonConverter] on the type being converted.
if (resolveJsonConverterAttribute && converter == null)
{
JsonConverterAttribute?converterAttribute = typeToConvert.GetUniqueCustomAttribute <JsonConverterAttribute>(inherit: false);
if (converterAttribute != null)
{
converter = GetConverterFromAttribute(converterAttribute, typeToConvert: typeToConvert, memberInfo: null, options);
}
}
// Priority 3: Query the built-in converters.
converter ??= GetBuiltInConverter(typeToConvert);
// Expand if factory converter & validate.
converter = options.ExpandConverterFactory(converter, typeToConvert);
if (!converter.TypeToConvert.IsInSubtypeRelationshipWith(typeToConvert))
{
ThrowHelper.ThrowInvalidOperationException_SerializationConverterNotCompatible(converter.GetType(), converter.TypeToConvert);
}
JsonSerializerOptions.CheckConverterNullabilityIsSameAsPropertyType(converter, typeToConvert);
return(converter);
}