public ObjectConverter(JsonSerializerOptions options)
{
_objectMapping = options.GetObjectMappingRegistry().Lookup <T>();
_memberConverters = new Lazy <MemberConverters>(() => MemberConverters.Create(options, _objectMapping));
_isInterfaceOrAbstract = typeof(T).IsInterface || typeof(T).IsAbstract;
_isStruct = typeof(T).IsStruct();
if (!_isInterfaceOrAbstract && _objectMapping.CreatorMapping == null && !_isStruct)
{
ConstructorInfo defaultConstructorInfo = typeof(T).GetConstructor(
BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance,
null,
Type.EmptyTypes,
null);
if (defaultConstructorInfo == null)
{
throw new JsonException($"Cannot find a default constructor on type {typeof(T)}");
}
_constructor = defaultConstructorInfo.CreateDelegate <T>();
}
_discriminatorConvention = options.GetDiscriminatorConventionRegistry().GetConvention(typeof(T));
_referenceHandling = _isStruct ? ReferenceHandling.Default : options.GetReferenceHandling();
}
public static MemberConverters Create(JsonSerializerOptions options, IObjectMapping objectMapping)
{
MemberConverters converters = new MemberConverters();
if (options.PropertyNameCaseInsensitive)
{
converters.ForReadAsString = new Dictionary <string, IMemberConverter>(StringComparer.OrdinalIgnoreCase);
}
converters.ExtensionData = objectMapping.ExtensionData;
foreach (IMemberMapping memberMapping in objectMapping.MemberMappings)
{
IMemberConverter memberConverter = memberMapping.GenerateMemberConverter();
if (memberMapping.CanBeDeserialized || objectMapping.IsCreatorMember(memberConverter.MemberName))
{
if (options.PropertyNameCaseInsensitive)
{
converters.ForReadAsString.Add(memberConverter.MemberNameAsString, memberConverter);
}
converters.ForRead.Add(memberConverter.MemberName, memberConverter);
if (memberConverter.RequirementPolicy == RequirementPolicy.AllowNull ||
memberConverter.RequirementPolicy == RequirementPolicy.Always)
{
converters.RequiredForRead.Add(memberConverter);
}
}
if (memberMapping.CanBeSerialized)
{
converters.ForWrite.Add(memberConverter);
}
}
return(converters);
}