public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
var token = JToken.Load(reader);
var paramType = objectType.GenericTypeArguments[0];
// handle tuples
// handle objects with Probability property (by structural matching) (including wrapper on tuple)
if (ValueTupleReflectionHelper.IsValueTupleOrNullableType(paramType) ||
paramType.GetProperty(nameof(IProbabilityObject.Probability)) != null)
{
if (token is JArray jArray)
{
Type arType;
if (paramType.GetInterface(nameof(IProbabilityObject)) != null)
{
arType = paramType.MakeArrayType();
}
else
{
arType = typeof(ProbabilityObjectWrapper <>).MakeGenericType(paramType).MakeArrayType();
}
var wrapperType = typeof(ProbabilityObjectCollection <>).MakeGenericType(paramType);
var parsedArray = jArray.ToObject(arType, serializer);
var wrapper = Activator.CreateInstance(wrapperType, parsedArray);
return(wrapperType.GetProperty(nameof(ProbabilityObjectCollection <IProbabilityObject> .ProbabilityCollection)).GetValue(wrapper));
}
}
if (token.Type == JTokenType.Null)
{
return(null);
}
//other (simple) cases
switch (token)
{
case JObject jObject:
{
var dictType = typeof(IDictionary <,>).MakeGenericType(paramType, typeof(decimal?));
return(Activator.CreateInstance(objectType, jObject.ToObject(dictType, serializer)));
}
case JArray jArray:
{
var arType = typeof(IList <>).MakeGenericType(paramType);
return(Activator.CreateInstance(objectType, jArray.ToObject(arType, serializer)));
}
default:
throw new InvalidOperationException("Invalid JToken type.");
}
}
public override bool CanConvert(Type objectType) => ValueTupleReflectionHelper.IsValueTupleOrNullableType(objectType, out var _, out var _);
