private object PopulateList(IList list, JsonReader reader, JsonArrayContract contract, JsonProperty containerProperty, string id)
        {
            IWrappedCollection wrappedCollection = list as IWrappedCollection;
            object 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);

            int initialDepth = reader.Depth;

            if (contract.ItemContract == null)
                contract.ItemContract = GetContractSafe(contract.CollectionItemType);

            JsonConverter collectionItemConverter = GetConverter(contract.ItemContract, null, contract, containerProperty);

            int? previousErrorIndex = null;

            bool 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)
                {
                    JsonPosition 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);
                        }
                        else
                        {
                            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 object PopulateMultidimensionalArray(IList list, JsonReader reader, JsonArrayContract contract, JsonProperty containerProperty, string id)
        {
            int rank = contract.UnderlyingType.GetArrayRank();

            if (id != null)
                AddReference(reader, id, list);

            OnDeserializing(reader, contract, list);

            JsonContract collectionItemContract = GetContractSafe(contract.CollectionItemType);
            JsonConverter collectionItemConverter = GetConverter(collectionItemContract, null, contract, containerProperty);

            int? previousErrorIndex = null;
            Stack<IList> listStack = new Stack<IList>();
            listStack.Push(list);
            IList currentList = list;

            bool finished = false;
            do
            {
                int 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)
                    {
                        JsonPosition 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);
                            }
                            else
                            {
                                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);
            return list;
        }
コード例 #3
0
        private void SerializeList(JsonWriter writer, IEnumerable values, JsonArrayContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
        {
            IWrappedCollection wrappedCollection = values as IWrappedCollection;
            object             underlyingList    = wrappedCollection != null ? wrappedCollection.UnderlyingCollection : values;

            OnSerializing(writer, contract, underlyingList);

            _serializeStack.Add(underlyingList);

            bool hasWrittenMetadataObject = WriteStartArray(writer, underlyingList, contract, member, collectionContract, containerProperty);

            writer.WriteStartArray();

            int initialDepth = writer.Top;

            int index = 0;

            // note that an error in the IEnumerable won't be caught
            foreach (object value in values)
            {
                try
                {
                    JsonContract 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);
        }
        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;
                IList list = contract.CreateTemporaryCollection();

                if (contract.ShouldCreateWrapper)
                    list = contract.CreateWrapper(list);

                return list;
            }
            else if (contract.DefaultCreator != null && (!contract.DefaultCreatorNonPublic || Serializer._constructorHandling == ConstructorHandling.AllowNonPublicDefaultConstructor))
            {
                object list = contract.DefaultCreator();

                if (contract.ShouldCreateWrapper)
                    list = contract.CreateWrapper(list);

                createdFromNonDefaultCreator = false;
                return (IList)list;
            }
            else if (contract.ParametrizedCreator != null)
            {
                createdFromNonDefaultCreator = true;
                return contract.CreateTemporaryCollection();
            }
            else
            {
                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));
            }
        }
コード例 #5
0
        private void SerializeValue(JsonWriter writer, object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
        {
            if (value == null)
            {
                writer.WriteNull();
                return;
            }

            JsonConverter converter =
                ((member != null) ? member.Converter : null) ??
                ((containerProperty != null) ? containerProperty.ItemConverter : null) ??
                ((containerContract != null) ? containerContract.ItemConverter : null) ??
                valueContract.Converter ??
                Serializer.GetMatchingConverter(valueContract.UnderlyingType) ??
                valueContract.InternalConverter;

            if (converter != null && converter.CanWrite)
            {
                SerializeConvertable(writer, converter, value, valueContract, containerContract, containerProperty);
                return;
            }

            switch (valueContract.ContractType)
            {
            case JsonContractType.Object:
                SerializeObject(writer, value, (JsonObjectContract)valueContract, member, containerContract, containerProperty);
                break;

            case JsonContractType.Array:
                JsonArrayContract arrayContract = (JsonArrayContract)valueContract;
                if (!arrayContract.IsMultidimensionalArray)
                {
                    SerializeList(writer, (IEnumerable)value, arrayContract, member, containerContract, containerProperty);
                }
                else
                {
                    SerializeMultidimensionalArray(writer, (Array)value, arrayContract, member, containerContract, containerProperty);
                }
                break;

            case JsonContractType.Primitive:
                SerializePrimitive(writer, value, (JsonPrimitiveContract)valueContract, member, containerContract, containerProperty);
                break;

            case JsonContractType.String:
                SerializeString(writer, value, (JsonStringContract)valueContract);
                break;

            case JsonContractType.Dictionary:
                JsonDictionaryContract dictionaryContract = (JsonDictionaryContract)valueContract;
                SerializeDictionary(writer, (value is IDictionary) ? (IDictionary)value : dictionaryContract.CreateWrapper(value), dictionaryContract, member, containerContract, containerProperty);
                break;

#if !(NET35 || NET20 || PORTABLE40)
            case JsonContractType.Dynamic:
                SerializeDynamic(writer, (IDynamicMetaObjectProvider)value, (JsonDynamicContract)valueContract, member, containerContract, containerProperty);
                break;
#endif
#if !(NETFX_CORE || PORTABLE40 || PORTABLE)
            case JsonContractType.Serializable:
                SerializeISerializable(writer, (ISerializable)value, (JsonISerializableContract)valueContract, member, containerContract, containerProperty);
                break;
#endif
            case JsonContractType.Linq:
                ((JToken)value).WriteTo(writer, Serializer.Converters.ToArray());
                break;
            }
        }