IProtoSerializerWithWireType DecorateValueSerializer(Type type, BinaryDataFormat?dynamicTypeDataFormat, ref ValueFormat format, IProtoSerializerWithWireType ser)
{
// Uri decorator is applied after default value
// because default value for Uri is treated as string
if (ser.ExpectedType == _model.MapType(typeof(string)) && type == _model.MapType(typeof(Uri)))
{
ser = new UriDecorator(_model, ser);
}
#if PORTABLE
else if (ser.ExpectedType == _model.MapType(typeof(string)) && type.FullName == typeof(Uri).FullName)
{
// In PCLs, the Uri type may not match (WinRT uses Internal/Uri, .Net uses System/Uri)
ser = new ReflectedUriDecorator(type, _model, ser);
}
#endif
if (dynamicTypeDataFormat != null)
{
ser = new NetObjectValueDecorator(type, format == ValueFormat.Reference || format == ValueFormat.LateReference, dynamicTypeDataFormat.Value, !_model.ProtoCompatibility.SuppressNullWireType, _model);
}
else if (MetaType.IsNetObjectValueDecoratorNecessary(_model, format))
{
ser = new NetObjectValueDecorator(
ser,
Helpers.GetNullableUnderlyingType(type) != null,
format == ValueFormat.Reference || format == ValueFormat.LateReference,
format == ValueFormat.LateReference && CanTypeBeAsLateReferenceOnBuildStage(_model.GetKey(type, false, true), _model),
!_model.ProtoCompatibility.SuppressNullWireType,
_model);
}
else
{
format = ValueFormat.Compact;
}
return(ser);
}
IProtoSerializerWithWireType BuildValueFinalSerializer(ValueSerializationSettings settings, bool isMemberOrNested, out WireType wireType, int levelNumber)
{
object defaultValue;
var l = CompleteLevel(settings, levelNumber, out defaultValue).Basic;
// to ensure that model can be copied and used again
for (int i = 1; i <= 3; i++)
{
var l2 = CompleteLevel(settings, levelNumber, out defaultValue);
Debug.Assert(l.Equals(l2.Basic));
}
Debug.Assert(l.ContentBinaryFormatHint != null, "l.ContentBinaryFormatHint != null");
Debug.Assert(l.WriteAsDynamicType != null, "l.WriteAsDynamicType != null");
Debug.Assert(l.Collection.Append != null, "l.Collection.Append != null");
// postpone all checks for types when adding member till BuildSerializer, resolve everything only on buildserializer! till that have only local not inherited settings.
// do not allow EnumPassthru and other settings to affect anything until buildling serializer
wireType = 0;
Type itemType = l.Collection.ItemType ?? l.EffectiveType;
bool itemTypeCanBeNull = CanTypeBeNull(itemType);
bool isPacked = CanBePackedCollection(l);
IProtoSerializerWithWireType ser = null;
if (l.Collection.IsCollection)
{
Type nestedItemType = null;
Type nestedDefaultType = null;
int idx = _model.FindOrAddAuto(itemType, false, true, false);
MetaType type = idx < 0 ? null : _model[itemType];
if (!type?.GetFinalSettingsCopy().IgnoreListHandling ?? true)
{
MetaType.ResolveListTypes(_model, itemType, ref nestedItemType, ref nestedDefaultType);
}
bool itemIsNestedCollection = nestedItemType != null;
// primitive types except System.Object may be handled as nested through recursion
bool tryHandleAsRegistered = !isMemberOrNested || itemType == _model.MapType(typeof(object));
if (tryHandleAsRegistered)
{
var nestedLevel = settings.GetSettingsCopy(levelNumber + 1);
nestedLevel = PrepareNestedLevelForBuild(nestedLevel, itemType);
settings.SetSettings(nestedLevel, levelNumber + 1);
// should use its level settings and merge from type, ...
ser = BuildValueFinalSerializer(settings, true, out wireType, levelNumber + 1);
//object dummy = null;
//ser = TryGetCoreSerializer(l.ContentBinaryFormatHint.Value, nestedLevel.Basic.EffectiveType, out wireType, ref nestedLevel.Basic.Format, nestedLevel.Basic.WriteAsDynamicType.GetValueOrDefault(), l.Collection.Append.Value, isPacked, true, ref dummy);
//if (ser != null)
// ThrowIfHasMoreLevels(settings, levelNumber + 1, l, ", no more nested type detected");
}
else if (!itemIsNestedCollection)
{
var nestedLevel = settings.GetSettingsCopy(levelNumber + 1);
nestedLevel = PrepareNestedLevelForBuild(nestedLevel, itemType);
nestedLevel.Basic.Collection.ItemType = null; // IgnoreListHandling or not a collection
settings.SetSettings(nestedLevel, levelNumber + 1);
ser = BuildValueFinalSerializer(settings, true, out wireType, levelNumber + 1);
}
if (ser == null && itemIsNestedCollection)
{
// if we already tried to lookup registered type no need to do it again
MetaType metaType;
if (_model.FindOrAddAuto(itemType, false, true, false, out metaType) >= 0)
{
nestedDefaultType = metaType.GetFinalSettingsCopy().ConstructType ?? nestedDefaultType ?? metaType.Type;
}
var nestedLevel = settings.GetSettingsCopy(levelNumber + 1);
if (nestedLevel.Basic.Collection.ConcreteType == null)
{
nestedLevel.Basic.Collection.ConcreteType = nestedDefaultType;
}
if (nestedLevel.IsNotAssignable)
{
throw new ProtoException("Nested collection item should be assignable");
}
nestedLevel.Basic.Collection.Append = false;
// TODO throw if set to true: throw new ProtoException("AppendCollection is not supported for nested types: " + objectType.Name);
if (nestedLevel.Basic.Collection.ItemType == null)
{
nestedLevel.Basic.Collection.ItemType = nestedItemType;
}
else if (!Helpers.IsAssignableFrom(nestedItemType, nestedLevel.Basic.Collection.ItemType))
{
throw new ProtoException(
"Nested collection item type " + nestedLevel.Basic.Collection.ItemType + " is not assignable to " + nestedItemType + " for declared collection type " +
l.EffectiveType);
}
nestedLevel = PrepareNestedLevelForBuild(nestedLevel, itemType);
settings.SetSettings(nestedLevel, levelNumber + 1);
WireType wt;
ser = BuildValueFinalSerializer(
settings,
true,
out wt,
levelNumber + 1);
isPacked = false;
}
}
else
{
// handled outside and not wrapped with collection
if (!isMemberOrNested)
{
l.Format = ValueFormat.Compact;
}
isPacked = false; // it's not even a collection
ser = TryGetCoreSerializer(l.ContentBinaryFormatHint.Value, itemType, out wireType, ref l.Format, l.WriteAsDynamicType.Value, l.Collection.Append.Value, isPacked, true, ref defaultValue);
if (ser != null)
{
ThrowIfHasMoreLevels(settings, levelNumber, l, ", no more nested type detected");
}
}
if (ser == null)
{
throw new InvalidOperationException("No serializer defined for type: " + itemType.FullName);
}
if (itemTypeCanBeNull &&
(
(Helpers.GetNullableUnderlyingType(itemType) != null && Helpers.GetNullableUnderlyingType(ser.ExpectedType) == null)
// TODO get rid of ugly casting, maybe use builder pattern
|| (!Helpers.IsValueType(itemType) && !(ser is NetObjectValueDecorator))
))
{
// nested level may be not collection and already wrapped with nonull, may later add check whether handled as registered vs as nested
if (!(ser is NoNullDecorator))
{
// if not wrapped with net obj - wrap with write-null check
ser = new NoNullDecorator(_model, ser, l.Collection.ItemType != null); // throw only for collection elements, otherwise don't write
}
}
if (itemType != ser.ExpectedType && (!l.WriteAsDynamicType.Value || !Helpers.IsAssignableFrom(ser.ExpectedType, itemType)))
{
throw new ProtoException(string.Format("Wrong type in the tail; expected {0}, received {1}", ser.ExpectedType, itemType));
}
// apply lists if appropriate
if (l.Collection.IsCollection)
{
bool protoCompatibility = l.Collection.Format == CollectionFormat.Protobuf || l.Collection.Format == CollectionFormat.ProtobufNotPacked;
WireType packedReadWt;
if (!protoCompatibility)
{
packedReadWt = WireType.None;
Debug.Assert(!isPacked); // should be determinated before passing to TryGetCoreSerializer
isPacked = false;
}
else
{
packedReadWt = CanPack(l.Collection.ItemType, l.ContentBinaryFormatHint)
? l.Collection.PackedWireTypeForRead.GetValueOrDefault(wireType)
: WireType.None;
}
if (l.EffectiveType.IsArray)
{
if (l.EffectiveType.GetArrayRank() == 1)
{
ser = new ArrayDecorator(
_model,
ser,
isPacked,
packedReadWt,
l.EffectiveType,
!l.Collection.Append.Value,
l.Collection.ArrayLengthReadLimit.Value,
protoCompatibility);
}
else
{
if (protoCompatibility)
{
throw new NotSupportedException("Multi-dimensional arrays are supported only in Enhanced collection format");
}
ser = new MultiDimensionalArrayDecorator(
_model,
ser,
l.EffectiveType,
!l.Collection.Append.Value,
l.Collection.ArrayLengthReadLimit.Value);
}
}
else
{
ser = ListDecorator.Create(
_model,
l.EffectiveType,
l.Collection.ConcreteType,
ser,
isPacked,
packedReadWt,
!l.Collection.Append.Value,
protoCompatibility,
true);
}
if (isMemberOrNested)
{
if (MetaType.IsNetObjectValueDecoratorNecessary(_model, l.Format))
{
ser = new NetObjectValueDecorator(
ser,
Helpers.GetNullableUnderlyingType(l.EffectiveType) != null,
l.Format == ValueFormat.Reference || l.Format == ValueFormat.LateReference,
l.Format == ValueFormat.LateReference && CanTypeBeAsLateReferenceOnBuildStage(_model.GetKey(l.EffectiveType, false, true), _model),
!_model.ProtoCompatibility.SuppressNullWireType,
_model);
}
else if (!Helpers.IsValueType(l.EffectiveType) || Helpers.GetNullableUnderlyingType(l.EffectiveType) != null)
{
ser = new NoNullDecorator(_model, ser, false);
}
}
if (l.EffectiveType != ser.ExpectedType && (!l.WriteAsDynamicType.Value || !Helpers.IsAssignableFrom(ser.ExpectedType, itemType)))
{
throw new ProtoException(string.Format("Wrong type in the tail; expected {0}, received {1}", ser.ExpectedType, itemType));
}
}
if (levelNumber == 0 && defaultValue != null)
{
ser = new DefaultValueDecorator(_model, defaultValue, ser);
}
return(ser);
}
