private object PopulateList(IList list, JsonReader reader, JsonArrayContract contract, JsonProperty containerProperty, string id)
{
var wrappedCollection = list as IWrappedCollection;
var underlyingList = wrappedCollection != null ? wrappedCollection.UnderlyingCollection : list;
if (id != null)
AddReference(reader, id, underlyingList);
// can't populate an existing array
if (list.IsFixedSize)
{
reader.Skip();
return underlyingList;
}
OnDeserializing(reader, contract, underlyingList);
var initialDepth = reader.Depth;
if (contract.ItemContract == null)
contract.ItemContract = GetContractSafe(contract.CollectionItemType);
var collectionItemConverter = GetConverter(contract.ItemContract, null, contract, containerProperty);
int? previousErrorIndex = null;
var finished = false;
do
{
try
{
if (ReadForType(reader, contract.ItemContract, collectionItemConverter != null))
{
switch (reader.TokenType)
{
case JsonToken.EndArray:
finished = true;
break;
case JsonToken.Comment:
break;
default:
object value;
if (collectionItemConverter != null && collectionItemConverter.CanRead)
value = DeserializeConvertable(collectionItemConverter, reader, contract.CollectionItemType, null);
else
value = CreateValueInternal(reader, contract.CollectionItemType, contract.ItemContract, null, contract, containerProperty, null);
list.Add(value);
break;
}
}
else
{
break;
}
}
catch (Exception ex)
{
var errorPosition = reader.GetPosition(initialDepth);
if (IsErrorHandled(underlyingList, contract, errorPosition.Position, reader as IJsonLineInfo, reader.Path, ex))
{
HandleError(reader, true, initialDepth);
if (previousErrorIndex != null && previousErrorIndex == errorPosition.Position)
{
// reader index has not moved since previous error handling
// break out of reading array to prevent infinite loop
throw JsonSerializationException.Create(reader, "Infinite loop detected from error handling.", ex);
}
previousErrorIndex = errorPosition.Position;
}
else
{
throw;
}
}
} while (!finished);
if (!finished)
ThrowUnexpectedEndException(reader, contract, underlyingList, "Unexpected end when deserializing array.");
OnDeserialized(reader, contract, underlyingList);
return underlyingList;
}
private IList CreateNewList(JsonReader reader, JsonArrayContract contract, out bool createdFromNonDefaultCreator)
{
// some types like non-generic IEnumerable can be serialized but not deserialized
if (!contract.CanDeserialize)
throw JsonSerializationException.Create(reader, "Cannot create and populate list type {0}.".FormatWith(CultureInfo.InvariantCulture, contract.CreatedType));
if (contract.IsReadOnlyOrFixedSize)
{
createdFromNonDefaultCreator = true;
var list = contract.CreateTemporaryCollection();
if (contract.ShouldCreateWrapper)
list = contract.CreateWrapper(list);
return list;
}
if (contract.DefaultCreator != null && (!contract.DefaultCreatorNonPublic || Serializer._constructorHandling == ConstructorHandling.AllowNonPublicDefaultConstructor))
{
var list = contract.DefaultCreator();
if (contract.ShouldCreateWrapper)
list = contract.CreateWrapper(list);
createdFromNonDefaultCreator = false;
return (IList)list;
}
if (contract.HasParametrizedCreator)
{
createdFromNonDefaultCreator = true;
return contract.CreateTemporaryCollection();
}
if (!contract.IsInstantiable)
throw JsonSerializationException.Create(reader, "Could not create an instance of type {0}. Type is an interface or abstract class and cannot be instantiated.".FormatWith(CultureInfo.InvariantCulture, contract.UnderlyingType));
throw JsonSerializationException.Create(reader, "Unable to find a constructor to use for type {0}.".FormatWith(CultureInfo.InvariantCulture, contract.UnderlyingType));
}
private void PopulateMultidimensionalArray(IList list, JsonReader reader, JsonArrayContract contract, JsonProperty containerProperty, string id)
{
var rank = contract.UnderlyingType.GetArrayRank();
if (id != null)
AddReference(reader, id, list);
OnDeserializing(reader, contract, list);
var collectionItemContract = GetContractSafe(contract.CollectionItemType);
var collectionItemConverter = GetConverter(collectionItemContract, null, contract, containerProperty);
int? previousErrorIndex = null;
var listStack = new Stack<IList>();
listStack.Push(list);
var currentList = list;
var finished = false;
do
{
var initialDepth = reader.Depth;
if (listStack.Count == rank)
{
try
{
if (ReadForType(reader, collectionItemContract, collectionItemConverter != null))
{
switch (reader.TokenType)
{
case JsonToken.EndArray:
listStack.Pop();
currentList = listStack.Peek();
previousErrorIndex = null;
break;
case JsonToken.Comment:
break;
default:
object value;
if (collectionItemConverter != null && collectionItemConverter.CanRead)
value = DeserializeConvertable(collectionItemConverter, reader, contract.CollectionItemType, null);
else
value = CreateValueInternal(reader, contract.CollectionItemType, collectionItemContract, null, contract, containerProperty, null);
currentList.Add(value);
break;
}
}
else
{
break;
}
}
catch (Exception ex)
{
var errorPosition = reader.GetPosition(initialDepth);
if (IsErrorHandled(list, contract, errorPosition.Position, reader as IJsonLineInfo, reader.Path, ex))
{
HandleError(reader, true, initialDepth);
if (previousErrorIndex != null && previousErrorIndex == errorPosition.Position)
{
// reader index has not moved since previous error handling
// break out of reading array to prevent infinite loop
throw JsonSerializationException.Create(reader, "Infinite loop detected from error handling.", ex);
}
previousErrorIndex = errorPosition.Position;
}
else
{
throw;
}
}
}
else
{
if (reader.Read())
{
switch (reader.TokenType)
{
case JsonToken.StartArray:
IList newList = new List<object>();
currentList.Add(newList);
listStack.Push(newList);
currentList = newList;
break;
case JsonToken.EndArray:
listStack.Pop();
if (listStack.Count > 0)
{
currentList = listStack.Peek();
}
else
{
finished = true;
}
break;
case JsonToken.Comment:
break;
default:
throw JsonSerializationException.Create(reader, "Unexpected token when deserializing multidimensional array: " + reader.TokenType);
}
}
else
{
break;
}
}
} while (!finished);
if (!finished)
ThrowUnexpectedEndException(reader, contract, list, "Unexpected end when deserializing array.");
OnDeserialized(reader, contract, list);
}
private bool WriteStartArray(JsonWriter writer, object values, JsonArrayContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
{
var isReference = ResolveIsReference(contract, member, containerContract, containerProperty) ?? HasFlag(Serializer._preserveReferencesHandling, PreserveReferencesHandling.Arrays);
// don't make readonly fields the referenced value because they can't be deserialized to
isReference = (isReference && (member == null || member.Writable));
var includeTypeDetails = ShouldWriteType(TypeNameHandling.Arrays, contract, member, containerContract, containerProperty);
var writeMetadataObject = isReference || includeTypeDetails;
if (writeMetadataObject)
{
writer.WriteStartObject();
if (isReference)
{
WriteReferenceIdProperty(writer, contract.UnderlyingType, values);
}
if (includeTypeDetails)
{
WriteTypeProperty(writer, values.GetType());
}
writer.WritePropertyName(JsonTypeReflector.ArrayValuesPropertyName, false);
}
if (contract.ItemContract == null)
contract.ItemContract = Serializer._contractResolver.ResolveContract(contract.CollectionItemType ?? typeof(object));
return writeMetadataObject;
}
private void SerializeMultidimensionalArray(JsonWriter writer, Array values, JsonArrayContract contract, JsonProperty member, int initialDepth, int[] indices)
{
var dimension = indices.Length;
var newIndices = new int[dimension + 1];
for (var i = 0; i < dimension; i++)
{
newIndices[i] = indices[i];
}
writer.WriteStartArray();
for (var i = 0; i < values.GetLength(dimension); i++)
{
newIndices[dimension] = i;
var isTopLevel = (newIndices.Length == values.Rank);
if (isTopLevel)
{
var value = values.GetValue(newIndices);
try
{
var valueContract = contract.FinalItemContract ?? GetContractSafe(value);
if (ShouldWriteReference(value, null, valueContract, contract, member))
{
WriteReference(writer, value);
}
else
{
if (CheckForCircularReference(writer, value, null, valueContract, contract, member))
{
SerializeValue(writer, value, valueContract, null, contract, member);
}
}
}
catch (Exception ex)
{
if (IsErrorHandled(values, contract, i, null, writer.ContainerPath, ex))
HandleError(writer, initialDepth + 1);
else
throw;
}
}
else
{
SerializeMultidimensionalArray(writer, values, contract, member, initialDepth + 1, newIndices);
}
}
writer.WriteEndArray();
}
private void SerializeMultidimensionalArray(JsonWriter writer, Array values, JsonArrayContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
OnSerializing(writer, contract, values);
_serializeStack.Add(values);
var hasWrittenMetadataObject = WriteStartArray(writer, values, contract, member, collectionContract, containerProperty);
SerializeMultidimensionalArray(writer, values, contract, member, writer.Top, new int[0]);
if (hasWrittenMetadataObject)
writer.WriteEndObject();
_serializeStack.RemoveAt(_serializeStack.Count - 1);
OnSerialized(writer, contract, values);
}
private void SerializeList(JsonWriter writer, IEnumerable values, JsonArrayContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
var wrappedCollection = values as IWrappedCollection;
var underlyingList = wrappedCollection != null ? wrappedCollection.UnderlyingCollection : values;
OnSerializing(writer, contract, underlyingList);
_serializeStack.Add(underlyingList);
var hasWrittenMetadataObject = WriteStartArray(writer, underlyingList, contract, member, collectionContract, containerProperty);
writer.WriteStartArray();
var initialDepth = writer.Top;
var index = 0;
// note that an error in the IEnumerable won't be caught
foreach (var value in values)
{
try
{
var valueContract = contract.FinalItemContract ?? GetContractSafe(value);
if (ShouldWriteReference(value, null, valueContract, contract, member))
{
WriteReference(writer, value);
}
else
{
if (CheckForCircularReference(writer, value, null, valueContract, contract, member))
{
SerializeValue(writer, value, valueContract, null, contract, member);
}
}
}
catch (Exception ex)
{
if (IsErrorHandled(underlyingList, contract, index, null, writer.ContainerPath, ex))
HandleError(writer, initialDepth);
else
throw;
}
finally
{
index++;
}
}
writer.WriteEndArray();
if (hasWrittenMetadataObject)
writer.WriteEndObject();
_serializeStack.RemoveAt(_serializeStack.Count - 1);
OnSerialized(writer, contract, underlyingList);
}
