/// <summary>
/// Configures the next stack frame for a polymorphic converter.
/// </summary>
public JsonConverter InitializePolymorphicReEntry(Type runtimeType, JsonSerializerOptions options)
{
Debug.Assert(PolymorphicSerializationState == PolymorphicSerializationState.None);
// For perf, avoid the dictionary lookup in GetOrAddJsonTypeInfo() for every element of a collection
// if the current element is the same type as the previous element.
if (PolymorphicJsonTypeInfo?.PropertyType != runtimeType)
{
JsonTypeInfo typeInfo = options.GetTypeInfoInternal(runtimeType);
PolymorphicJsonTypeInfo = typeInfo.PropertyInfoForTypeInfo;
}
PolymorphicSerializationState = PolymorphicSerializationState.PolymorphicReEntryStarted;
return(PolymorphicJsonTypeInfo.EffectiveConverter);
}
