private bool ShouldSerialize(JsonTextWriterWithDepth jw, JsonProperty property, object obj, int maxDepth, IEnumerable<string> excludedPropertyNames) {
if (excludedPropertyNames != null && property.PropertyName.AnyWildcardMatches(excludedPropertyNames, true))
return false;
bool isPrimitiveType = DefaultContractResolver.IsJsonPrimitiveType(property.PropertyType);
bool isPastMaxDepth = !(isPrimitiveType ? jw.CurrentDepth <= maxDepth : jw.CurrentDepth < maxDepth);
if (isPastMaxDepth)
return false;
if (isPrimitiveType)
return true;
object value = property.ValueProvider.GetValue(obj);
if (value == null)
return false;
if (typeof(ICollection).IsAssignableFrom(property.PropertyType)) {
var collection = value as ICollection;
if (collection != null && collection.Count == 0)
return false;
}
var collectionType = value.GetType().GetInterfaces().FirstOrDefault(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(ICollection<>));
if (collectionType != null) {
int count = (int)collectionType.GetProperty("Count").GetValue(value, null);
if (count == 0)
return false;
}
return true;
}
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 PopulateDictionary(IDictionary dictionary, JsonReader reader, JsonDictionaryContract contract, JsonProperty containerProperty, string id)
{
IWrappedDictionary wrappedDictionary = dictionary as IWrappedDictionary;
object underlyingDictionary = wrappedDictionary != null ? wrappedDictionary.UnderlyingDictionary : dictionary;
if (id != null)
AddReference(reader, id, underlyingDictionary);
OnDeserializing(reader, contract, underlyingDictionary);
int initialDepth = reader.Depth;
if (contract.KeyContract == null)
contract.KeyContract = GetContractSafe(contract.DictionaryKeyType);
if (contract.ItemContract == null)
contract.ItemContract = GetContractSafe(contract.DictionaryValueType);
JsonConverter dictionaryValueConverter = contract.ItemConverter ?? GetConverter(contract.ItemContract, null, contract, containerProperty);
PrimitiveTypeCode keyTypeCode = (contract.KeyContract is JsonPrimitiveContract) ? ((JsonPrimitiveContract)contract.KeyContract).TypeCode : PrimitiveTypeCode.Empty;
bool finished = false;
do
{
switch (reader.TokenType)
{
case JsonToken.PropertyName:
object keyValue = reader.Value;
if (CheckPropertyName(reader, keyValue.ToString()))
continue;
try
{
try
{
DateParseHandling dateParseHandling;
switch (keyTypeCode)
{
case PrimitiveTypeCode.DateTime:
case PrimitiveTypeCode.DateTimeNullable:
dateParseHandling = DateParseHandling.DateTime;
break;
#if !NET20
case PrimitiveTypeCode.DateTimeOffset:
case PrimitiveTypeCode.DateTimeOffsetNullable:
dateParseHandling = DateParseHandling.DateTimeOffset;
break;
#endif
default:
dateParseHandling = DateParseHandling.None;
break;
}
// this is for correctly reading ISO and MS formatted dictionary keys
object dt;
if (dateParseHandling != DateParseHandling.None && DateTimeUtils.TryParseDateTime(keyValue.ToString(), dateParseHandling, reader.DateTimeZoneHandling, reader.DateFormatString, reader.Culture, out dt))
keyValue = dt;
else
keyValue = EnsureType(reader, keyValue, CultureInfo.InvariantCulture, contract.KeyContract, contract.DictionaryKeyType);
}
catch (Exception ex)
{
throw JsonSerializationException.Create(reader, "Could not convert string '{0}' to dictionary key type '{1}'. Create a TypeConverter to convert from the string to the key type object.".FormatWith(CultureInfo.InvariantCulture, reader.Value, contract.DictionaryKeyType), ex);
}
if (!ReadForType(reader, contract.ItemContract, dictionaryValueConverter != null))
throw JsonSerializationException.Create(reader, "Unexpected end when deserializing object.");
object itemValue;
if (dictionaryValueConverter != null && dictionaryValueConverter.CanRead)
itemValue = DeserializeConvertable(dictionaryValueConverter, reader, contract.DictionaryValueType, null);
else
itemValue = CreateValueInternal(reader, contract.DictionaryValueType, contract.ItemContract, null, contract, containerProperty, null);
dictionary[keyValue] = itemValue;
}
catch (Exception ex)
{
if (IsErrorHandled(underlyingDictionary, contract, keyValue, reader as IJsonLineInfo, reader.Path, ex))
HandleError(reader, true, initialDepth);
else
throw;
}
break;
case JsonToken.Comment:
break;
case JsonToken.EndObject:
finished = true;
break;
default:
throw JsonSerializationException.Create(reader, "Unexpected token when deserializing object: " + reader.TokenType);
}
} while (!finished && reader.Read());
if (!finished)
ThrowUnexpectedEndException(reader, contract, underlyingDictionary, "Unexpected end when deserializing object.");
OnDeserialized(reader, contract, underlyingDictionary);
return underlyingDictionary;
}
private void SerializePrimitive(JsonWriter writer, object value, JsonPrimitiveContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
{
if (contract.TypeCode == PrimitiveTypeCode.Bytes)
{
// if type name handling is enabled then wrap the base64 byte string in an object with the type name
bool includeTypeDetails = ShouldWriteType(TypeNameHandling.Objects, contract, member, containerContract, containerProperty);
if (includeTypeDetails)
{
writer.WriteStartObject();
WriteTypeProperty(writer, contract.CreatedType);
writer.WritePropertyName(JsonTypeReflector.ValuePropertyName, false);
JsonWriter.WriteValue(writer, contract.TypeCode, value);
writer.WriteEndObject();
return;
}
}
JsonWriter.WriteValue(writer, contract.TypeCode, value);
}
private JsonConverter GetConverter(JsonContract contract, JsonConverter memberConverter, JsonContainerContract containerContract, JsonProperty containerProperty)
{
JsonConverter converter = null;
if (memberConverter != null)
{
// member attribute converter
converter = memberConverter;
}
else if (containerProperty != null && containerProperty.ItemConverter != null)
{
converter = containerProperty.ItemConverter;
}
else if (containerContract != null && containerContract.ItemConverter != null)
{
converter = containerContract.ItemConverter;
}
else if (contract != null)
{
JsonConverter matchingConverter;
if (contract.Converter != null)
// class attribute converter
converter = contract.Converter;
else if ((matchingConverter = Serializer.GetMatchingConverter(contract.UnderlyingType)) != null)
// passed in converters
converter = matchingConverter;
else if (contract.InternalConverter != null)
// internally specified converter
converter = contract.InternalConverter;
}
return converter;
}
private void ResolveTypeName(JsonReader reader, ref Type objectType, ref JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, string qualifiedTypeName)
{
TypeNameHandling resolvedTypeNameHandling =
((member != null) ? member.TypeNameHandling : null)
?? ((containerContract != null) ? containerContract.ItemTypeNameHandling : null)
?? ((containerMember != null) ? containerMember.ItemTypeNameHandling : null)
?? Serializer._typeNameHandling;
if (resolvedTypeNameHandling != TypeNameHandling.None)
{
string typeName;
string assemblyName;
ReflectionUtils.SplitFullyQualifiedTypeName(qualifiedTypeName, out typeName, out assemblyName);
Type specifiedType;
try
{
specifiedType = Serializer._binder.BindToType(assemblyName, typeName);
}
catch (Exception ex)
{
throw JsonSerializationException.Create(reader, "Error resolving type specified in JSON '{0}'.".FormatWith(CultureInfo.InvariantCulture, qualifiedTypeName), ex);
}
if (specifiedType == null)
throw JsonSerializationException.Create(reader, "Type specified in JSON '{0}' was not resolved.".FormatWith(CultureInfo.InvariantCulture, qualifiedTypeName));
if (TraceWriter != null && TraceWriter.LevelFilter >= TraceLevel.Verbose)
TraceWriter.Trace(TraceLevel.Verbose, JsonPosition.FormatMessage(reader as IJsonLineInfo, reader.Path, "Resolved type '{0}' to {1}.".FormatWith(CultureInfo.InvariantCulture, qualifiedTypeName, specifiedType)), null);
if (objectType != null
#if !(NET35 || NET20 || PORTABLE40)
&& objectType != typeof(IDynamicMetaObjectProvider)
#endif
&& !objectType.IsAssignableFrom(specifiedType))
throw JsonSerializationException.Create(reader, "Type specified in JSON '{0}' is not compatible with '{1}'.".FormatWith(CultureInfo.InvariantCulture, specifiedType.AssemblyQualifiedName, objectType.AssemblyQualifiedName));
objectType = specifiedType;
contract = GetContractSafe(specifiedType);
}
}
private bool CalculatePropertyValues(JsonWriter writer, object value, JsonContainerContract contract, JsonProperty member, JsonProperty property, out JsonContract memberContract, out object memberValue)
{
if (!property.Ignored && property.Readable && ShouldSerialize(writer, property, value) && IsSpecified(writer, property, value))
{
if (property.PropertyContract == null)
{
property.PropertyContract = Serializer._contractResolver.ResolveContract(property.PropertyType);
}
memberValue = property.ValueProvider.GetValue(value);
memberContract = (property.PropertyContract.IsSealed) ? property.PropertyContract : GetContractSafe(memberValue);
if (ShouldWriteProperty(memberValue, property))
{
if (ShouldWriteReference(memberValue, property, memberContract, contract, member))
{
property.WritePropertyName(writer);
WriteReference(writer, memberValue);
return(false);
}
if (!CheckForCircularReference(writer, memberValue, property, memberContract, contract, member))
{
return(false);
}
if (memberValue == null)
{
JsonObjectContract objectContract = contract as JsonObjectContract;
Required resolvedRequired = property._required ?? ((objectContract != null) ? objectContract.ItemRequired : null) ?? Required.Default;
if (resolvedRequired == Required.Always)
{
throw JsonSerializationException.Create(null, writer.ContainerPath, "Cannot write a null value for property '{0}'. Property requires a value.".FormatWith(CultureInfo.InvariantCulture, property.PropertyName), null);
}
}
return(true);
}
}
memberContract = null;
memberValue = null;
return(false);
}
private object PopulateObject(object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, string id)
{
OnDeserializing(reader, contract, newObject);
// only need to keep a track of properies presence if they are required or a value should be defaulted if missing
Dictionary<JsonProperty, PropertyPresence> propertiesPresence = (contract.HasRequiredOrDefaultValueProperties || HasFlag(Serializer._defaultValueHandling, DefaultValueHandling.Populate))
? contract.Properties.ToDictionary(m => m, m => PropertyPresence.None)
: null;
if (id != null)
AddReference(reader, id, newObject);
int initialDepth = reader.Depth;
bool finished = false;
do
{
switch (reader.TokenType)
{
case JsonToken.PropertyName:
{
string memberName = reader.Value.ToString();
if (CheckPropertyName(reader, memberName))
continue;
try
{
// attempt exact case match first
// then try match ignoring case
JsonProperty property = contract.Properties.GetClosestMatchProperty(memberName);
if (property == null)
{
if (TraceWriter != null && TraceWriter.LevelFilter >= TraceLevel.Verbose)
TraceWriter.Trace(TraceLevel.Verbose, JsonPosition.FormatMessage(reader as IJsonLineInfo, reader.Path, "Could not find member '{0}' on {1}".FormatWith(CultureInfo.InvariantCulture, memberName, contract.UnderlyingType)), null);
if (Serializer._missingMemberHandling == MissingMemberHandling.Error)
throw JsonSerializationException.Create(reader, "Could not find member '{0}' on object of type '{1}'".FormatWith(CultureInfo.InvariantCulture, memberName, contract.UnderlyingType.Name));
if (!reader.Read())
break;
SetExtensionData(contract, member, reader, memberName, newObject);
continue;
}
if (property.PropertyContract == null)
property.PropertyContract = GetContractSafe(property.PropertyType);
JsonConverter propertyConverter = GetConverter(property.PropertyContract, property.MemberConverter, contract, member);
if (!ReadForType(reader, property.PropertyContract, propertyConverter != null))
throw JsonSerializationException.Create(reader, "Unexpected end when setting {0}'s value.".FormatWith(CultureInfo.InvariantCulture, memberName));
SetPropertyPresence(reader, property, propertiesPresence);
// set extension data if property is ignored or readonly
if (!SetPropertyValue(property, propertyConverter, contract, member, reader, newObject))
SetExtensionData(contract, member, reader, memberName, newObject);
}
catch (Exception ex)
{
if (IsErrorHandled(newObject, contract, memberName, reader as IJsonLineInfo, reader.Path, ex))
HandleError(reader, true, initialDepth);
else
throw;
}
break;
}
case JsonToken.EndObject:
finished = true;
break;
case JsonToken.Comment:
// ignore
break;
default:
throw JsonSerializationException.Create(reader, "Unexpected token when deserializing object: " + reader.TokenType);
}
} while (!finished && reader.Read());
if (!finished)
ThrowUnexpectedEndException(reader, contract, newObject, "Unexpected end when deserializing object.");
EndObject(newObject, reader, contract, initialDepth, propertiesPresence);
OnDeserialized(reader, contract, newObject);
return newObject;
}
private bool CheckForCircularReference(JsonWriter writer, object value, JsonProperty property, JsonContract contract, JsonContainerContract containerContract, JsonProperty containerProperty)
{
if (value == null || contract.ContractType == JsonContractType.Primitive || contract.ContractType == JsonContractType.String)
{
return(true);
}
ReferenceLoopHandling?referenceLoopHandling = null;
if (property != null)
{
referenceLoopHandling = property.ReferenceLoopHandling;
}
if (referenceLoopHandling == null && containerProperty != null)
{
referenceLoopHandling = containerProperty.ItemReferenceLoopHandling;
}
if (referenceLoopHandling == null && containerContract != null)
{
referenceLoopHandling = containerContract.ItemReferenceLoopHandling;
}
if (_serializeStack.IndexOf(value) != -1)
{
string message = "Self referencing loop detected";
if (property != null)
{
message += " for property '{0}'".FormatWith(CultureInfo.InvariantCulture, property.PropertyName);
}
message += " with type '{0}'.".FormatWith(CultureInfo.InvariantCulture, value.GetType());
switch (referenceLoopHandling.GetValueOrDefault(Serializer._referenceLoopHandling))
{
case ReferenceLoopHandling.Error:
throw JsonSerializationException.Create(null, writer.ContainerPath, message, null);
case ReferenceLoopHandling.Ignore:
if (TraceWriter != null && TraceWriter.LevelFilter >= TraceLevel.Verbose)
{
TraceWriter.Trace(TraceLevel.Verbose, JsonPosition.FormatMessage(null, writer.Path, message + ". Skipping serializing self referenced value."), null);
}
return(false);
case ReferenceLoopHandling.Serialize:
if (TraceWriter != null && TraceWriter.LevelFilter >= TraceLevel.Verbose)
{
TraceWriter.Trace(TraceLevel.Verbose, JsonPosition.FormatMessage(null, writer.Path, message + ". Serializing self referenced value."), null);
}
return(true);
}
}
return(true);
}
private void SerializeObject(JsonWriter writer, object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
OnSerializing(writer, contract, value);
_serializeStack.Add(value);
WriteObjectStart(writer, value, contract, member, collectionContract, containerProperty);
int initialDepth = writer.Top;
for (int index = 0; index < contract.Properties.Count; index++)
{
JsonProperty property = contract.Properties[index];
try
{
object memberValue;
JsonContract memberContract;
if (!CalculatePropertyValues(writer, value, contract, member, property, out memberContract, out memberValue))
{
continue;
}
property.WritePropertyName(writer);
SerializeValue(writer, memberValue, memberContract, property, contract, member);
}
catch (Exception ex)
{
if (IsErrorHandled(value, contract, property.PropertyName, null, writer.ContainerPath, ex))
{
HandleError(writer, initialDepth);
}
else
{
throw;
}
}
}
if (contract.ExtensionDataGetter != null)
{
IEnumerable <KeyValuePair <object, object> > extensionData = contract.ExtensionDataGetter(value);
if (extensionData != null)
{
foreach (KeyValuePair <object, object> e in extensionData)
{
JsonContract keyContract = GetContractSafe(e.Key);
JsonContract valueContract = GetContractSafe(e.Value);
bool escape;
string propertyName = GetPropertyName(writer, e.Key, keyContract, out escape);
if (ShouldWriteReference(e.Value, null, valueContract, contract, member))
{
writer.WritePropertyName(propertyName);
WriteReference(writer, e.Value);
}
else
{
if (!CheckForCircularReference(writer, e.Value, null, valueContract, contract, member))
{
continue;
}
writer.WritePropertyName(propertyName);
SerializeValue(writer, e.Value, valueContract, null, contract, member);
}
}
}
}
writer.WriteEndObject();
_serializeStack.RemoveAt(_serializeStack.Count - 1);
OnSerialized(writer, contract, value);
}
private bool ShouldWriteReference(object value, JsonProperty property, JsonContract valueContract, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
if (value == null)
{
return(false);
}
if (valueContract.ContractType == JsonContractType.Primitive || valueContract.ContractType == JsonContractType.String)
{
return(false);
}
bool?isReference = ResolveIsReference(valueContract, property, collectionContract, containerProperty);
if (isReference == null)
{
if (valueContract.ContractType == JsonContractType.Array)
{
isReference = HasFlag(Serializer._preserveReferencesHandling, PreserveReferencesHandling.Arrays);
}
else
{
isReference = HasFlag(Serializer._preserveReferencesHandling, PreserveReferencesHandling.Objects);
}
}
if (!isReference.Value)
{
return(false);
}
return(Serializer.GetReferenceResolver().IsReferenced(this, value));
}
private bool?ResolveIsReference(JsonContract contract, JsonProperty property, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
bool?isReference = null;
// value could be coming from a dictionary or array and not have a property
if (property != null)
{
isReference = property.IsReference;
}
if (isReference == null && containerProperty != null)
{
isReference = containerProperty.ItemIsReference;
}
if (isReference == null && collectionContract != null)
{
isReference = collectionContract.ItemIsReference;
}
if (isReference == null)
{
isReference = contract.IsReference;
}
return(isReference);
}
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;
}
}
private object CreateDynamic(JsonReader reader, JsonDynamicContract contract, JsonProperty member, string id)
{
IDynamicMetaObjectProvider newObject;
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));
if (contract.DefaultCreator != null &&
(!contract.DefaultCreatorNonPublic || Serializer._constructorHandling == ConstructorHandling.AllowNonPublicDefaultConstructor))
newObject = (IDynamicMetaObjectProvider)contract.DefaultCreator();
else
throw JsonSerializationException.Create(reader, "Unable to find a default constructor to use for type {0}.".FormatWith(CultureInfo.InvariantCulture, contract.UnderlyingType));
if (id != null)
AddReference(reader, id, newObject);
OnDeserializing(reader, contract, newObject);
int initialDepth = reader.Depth;
bool finished = false;
do
{
switch (reader.TokenType)
{
case JsonToken.PropertyName:
string memberName = reader.Value.ToString();
try
{
if (!reader.Read())
throw JsonSerializationException.Create(reader, "Unexpected end when setting {0}'s value.".FormatWith(CultureInfo.InvariantCulture, memberName));
// first attempt to find a settable property, otherwise fall back to a dynamic set without type
JsonProperty property = contract.Properties.GetClosestMatchProperty(memberName);
if (property != null && property.Writable && !property.Ignored)
{
if (property.PropertyContract == null)
property.PropertyContract = GetContractSafe(property.PropertyType);
JsonConverter propertyConverter = GetConverter(property.PropertyContract, property.MemberConverter, null, null);
if (!SetPropertyValue(property, propertyConverter, null, member, reader, newObject))
reader.Skip();
}
else
{
Type t = (JsonReader.IsPrimitiveToken(reader.TokenType)) ? reader.ValueType : typeof(IDynamicMetaObjectProvider);
JsonContract dynamicMemberContract = GetContractSafe(t);
JsonConverter dynamicMemberConverter = GetConverter(dynamicMemberContract, null, null, member);
object value;
if (dynamicMemberConverter != null && dynamicMemberConverter.CanRead)
value = DeserializeConvertable(dynamicMemberConverter, reader, t, null);
else
value = CreateValueInternal(reader, t, dynamicMemberContract, null, null, member, null);
contract.TrySetMember(newObject, memberName, value);
}
}
catch (Exception ex)
{
if (IsErrorHandled(newObject, contract, memberName, reader as IJsonLineInfo, reader.Path, ex))
HandleError(reader, true, initialDepth);
else
throw;
}
break;
case JsonToken.EndObject:
finished = true;
break;
default:
throw JsonSerializationException.Create(reader, "Unexpected token when deserializing object: " + reader.TokenType);
}
} while (!finished && reader.Read());
if (!finished)
ThrowUnexpectedEndException(reader, contract, newObject, "Unexpected end when deserializing object.");
OnDeserialized(reader, contract, newObject);
return newObject;
}
private void WriteObjectStart(JsonWriter writer, object value, JsonContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
writer.WriteStartObject();
bool isReference = ResolveIsReference(contract, member, collectionContract, containerProperty) ?? HasFlag(Serializer._preserveReferencesHandling, PreserveReferencesHandling.Objects);
if (isReference)
{
WriteReferenceIdProperty(writer, contract.UnderlyingType, value);
}
if (ShouldWriteType(TypeNameHandling.Objects, contract, member, collectionContract, containerProperty))
{
WriteTypeProperty(writer, contract.UnderlyingType);
}
}
private IDictionary<JsonProperty, object> ResolvePropertyAndCreatorValues(JsonObjectContract contract, JsonProperty containerProperty, JsonReader reader, Type objectType, out IDictionary<string, object> extensionData)
{
extensionData = (contract.ExtensionDataSetter != null) ? new Dictionary<string, object>() : null;
IDictionary<JsonProperty, object> propertyValues = new Dictionary<JsonProperty, object>();
bool exit = false;
do
{
switch (reader.TokenType)
{
case JsonToken.PropertyName:
string memberName = reader.Value.ToString();
// attempt exact case match first
// then try match ignoring case
JsonProperty property = contract.CreatorParameters.GetClosestMatchProperty(memberName) ??
contract.Properties.GetClosestMatchProperty(memberName);
if (property != null)
{
if (property.PropertyContract == null)
property.PropertyContract = GetContractSafe(property.PropertyType);
JsonConverter propertyConverter = GetConverter(property.PropertyContract, property.MemberConverter, contract, containerProperty);
if (!ReadForType(reader, property.PropertyContract, propertyConverter != null))
throw JsonSerializationException.Create(reader, "Unexpected end when setting {0}'s value.".FormatWith(CultureInfo.InvariantCulture, memberName));
if (!property.Ignored)
{
if (property.PropertyContract == null)
property.PropertyContract = GetContractSafe(property.PropertyType);
object propertyValue;
if (propertyConverter != null && propertyConverter.CanRead)
propertyValue = DeserializeConvertable(propertyConverter, reader, property.PropertyType, null);
else
propertyValue = CreateValueInternal(reader, property.PropertyType, property.PropertyContract, property, contract, containerProperty, null);
propertyValues[property] = propertyValue;
continue;
}
}
else
{
if (!reader.Read())
throw JsonSerializationException.Create(reader, "Unexpected end when setting {0}'s value.".FormatWith(CultureInfo.InvariantCulture, memberName));
if (TraceWriter != null && TraceWriter.LevelFilter >= TraceLevel.Verbose)
TraceWriter.Trace(TraceLevel.Verbose, JsonPosition.FormatMessage(reader as IJsonLineInfo, reader.Path, "Could not find member '{0}' on {1}.".FormatWith(CultureInfo.InvariantCulture, memberName, contract.UnderlyingType)), null);
if (Serializer._missingMemberHandling == MissingMemberHandling.Error)
throw JsonSerializationException.Create(reader, "Could not find member '{0}' on object of type '{1}'".FormatWith(CultureInfo.InvariantCulture, memberName, objectType.Name));
}
if (extensionData != null)
{
object value = CreateValueInternal(reader, null, null, null, contract, containerProperty, null);
extensionData[memberName] = value;
}
else
{
reader.Skip();
}
break;
case JsonToken.Comment:
break;
case JsonToken.EndObject:
exit = true;
break;
default:
throw JsonSerializationException.Create(reader, "Unexpected token when deserializing object: " + reader.TokenType);
}
} while (!exit && reader.Read());
return propertyValues;
}
private void SerializeConvertable(JsonWriter writer, JsonConverter converter, object value, JsonContract contract, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
if (ShouldWriteReference(value, null, contract, collectionContract, containerProperty))
{
WriteReference(writer, value);
}
else
{
if (!CheckForCircularReference(writer, value, null, contract, collectionContract, containerProperty))
{
return;
}
_serializeStack.Add(value);
if (TraceWriter != null && TraceWriter.LevelFilter >= TraceLevel.Info)
{
TraceWriter.Trace(TraceLevel.Info, JsonPosition.FormatMessage(null, writer.Path, "Started serializing {0} with converter {1}.".FormatWith(CultureInfo.InvariantCulture, value.GetType(), converter.GetType())), null);
}
converter.WriteJson(writer, value, GetInternalSerializer());
if (TraceWriter != null && TraceWriter.LevelFilter >= TraceLevel.Info)
{
TraceWriter.Trace(TraceLevel.Info, JsonPosition.FormatMessage(null, writer.Path, "Finished serializing {0} with converter {1}.".FormatWith(CultureInfo.InvariantCulture, value.GetType(), converter.GetType())), null);
}
_serializeStack.RemoveAt(_serializeStack.Count - 1);
}
}
private void SetPropertyPresence(JsonReader reader, JsonProperty property, Dictionary<JsonProperty, PropertyPresence> requiredProperties)
{
if (property != null && requiredProperties != null)
{
requiredProperties[property] = (reader.TokenType == JsonToken.Null || reader.TokenType == JsonToken.Undefined)
? PropertyPresence.Null
: PropertyPresence.Value;
}
}
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 bool ReadMetadataPropertiesToken(JTokenReader reader, ref Type objectType, ref JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, object existingValue, out object newValue, out string id)
{
id = null;
newValue = null;
if (reader.TokenType == JsonToken.StartObject)
{
JObject current = (JObject)reader._current;
JToken refToken = current[JsonTypeReflector.RefPropertyName];
if (refToken != null)
{
if (refToken.Type != JTokenType.String && refToken.Type != JTokenType.Null)
throw JsonSerializationException.Create(refToken, refToken.Path, "JSON reference {0} property must have a string or null value.".FormatWith(CultureInfo.InvariantCulture, JsonTypeReflector.RefPropertyName), null);
JToken property = refToken.Parent;
JToken additionalContent = null;
if (property.Next != null)
additionalContent = property.Next;
else if (property.Previous != null)
additionalContent = property.Previous;
string reference = (string)refToken;
if (reference != null)
{
if (additionalContent != null)
throw JsonSerializationException.Create(additionalContent, additionalContent.Path, "Additional content found in JSON reference object. A JSON reference object should only have a {0} property.".FormatWith(CultureInfo.InvariantCulture, JsonTypeReflector.RefPropertyName), null);
newValue = Serializer.GetReferenceResolver().ResolveReference(this, reference);
if (TraceWriter != null && TraceWriter.LevelFilter >= TraceLevel.Info)
TraceWriter.Trace(TraceLevel.Info, JsonPosition.FormatMessage(reader as IJsonLineInfo, reader.Path, "Resolved object reference '{0}' to {1}.".FormatWith(CultureInfo.InvariantCulture, reference, newValue.GetType())), null);
reader.Skip();
return true;
}
}
JToken typeToken = current[JsonTypeReflector.TypePropertyName];
if (typeToken != null)
{
string qualifiedTypeName = (string)typeToken;
JsonReader typeTokenReader = typeToken.CreateReader();
CheckedRead(typeTokenReader);
ResolveTypeName(typeTokenReader, ref objectType, ref contract, member, containerContract, containerMember, qualifiedTypeName);
JToken valueToken = current[JsonTypeReflector.ValuePropertyName];
if (valueToken != null)
{
while (true)
{
CheckedRead(reader);
if (reader.TokenType == JsonToken.PropertyName)
{
if ((string)reader.Value == JsonTypeReflector.ValuePropertyName)
return false;
}
CheckedRead(reader);
reader.Skip();
}
}
}
JToken idToken = current[JsonTypeReflector.IdPropertyName];
if (idToken != null)
{
id = (string)idToken;
}
JToken valuesToken = current[JsonTypeReflector.ArrayValuesPropertyName];
if (valuesToken != null)
{
JsonReader listReader = valuesToken.CreateReader();
CheckedRead(listReader);
newValue = CreateList(listReader, objectType, contract, member, existingValue, id);
reader.Skip();
return true;
}
}
CheckedRead(reader);
return false;
}
private void SerializeMultidimensionalArray(JsonWriter writer, Array values, JsonArrayContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
OnSerializing(writer, contract, values);
_serializeStack.Add(values);
bool 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 bool SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, object target)
{
object currentValue;
bool useExistingValue;
JsonContract propertyContract;
bool gottenCurrentValue;
if (CalculatePropertyDetails(property, ref propertyConverter, containerContract, containerProperty, reader, target, out useExistingValue, out currentValue, out propertyContract, out gottenCurrentValue))
return false;
object value;
if (propertyConverter != null && propertyConverter.CanRead)
{
if (!gottenCurrentValue && target != null && property.Readable)
currentValue = property.ValueProvider.GetValue(target);
value = DeserializeConvertable(propertyConverter, reader, property.PropertyType, currentValue);
}
else
{
value = CreateValueInternal(reader, property.PropertyType, propertyContract, property, containerContract, containerProperty, (useExistingValue) ? currentValue : null);
}
// always set the value if useExistingValue is false,
// otherwise also set it if CreateValue returns a new value compared to the currentValue
// this could happen because of a JsonConverter against the type
if ((!useExistingValue || value != currentValue)
&& ShouldSetPropertyValue(property, value))
{
property.ValueProvider.SetValue(target, value);
if (property.SetIsSpecified != null)
{
if (TraceWriter != null && TraceWriter.LevelFilter >= TraceLevel.Verbose)
TraceWriter.Trace(TraceLevel.Verbose, JsonPosition.FormatMessage(reader as IJsonLineInfo, reader.Path, "IsSpecified for property '{0}' on {1} set to true.".FormatWith(CultureInfo.InvariantCulture, property.PropertyName, property.DeclaringType)), null);
property.SetIsSpecified(target, true);
}
return true;
}
// the value wasn't set be JSON was populated onto the existing value
return useExistingValue;
}
private void SerializeMultidimensionalArray(JsonWriter writer, Array values, JsonArrayContract contract, JsonProperty member, int initialDepth, int[] indices)
{
int dimension = indices.Length;
int[] newIndices = new int[dimension + 1];
for (int i = 0; i < dimension; i++)
{
newIndices[i] = indices[i];
}
writer.WriteStartArray();
for (int i = 0; i < values.GetLength(dimension); i++)
{
newIndices[dimension] = i;
bool isTopLevel = (newIndices.Length == values.Rank);
if (isTopLevel)
{
object value = values.GetValue(newIndices);
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(values, contract, i, null, writer.ContainerPath, ex))
{
HandleError(writer, initialDepth + 1);
}
else
{
throw;
}
}
}
else
{
SerializeMultidimensionalArray(writer, values, contract, member, initialDepth + 1, newIndices);
}
}
writer.WriteEndArray();
}
internal object CreateISerializableItem(JToken token, Type type, JsonISerializableContract contract, JsonProperty member)
{
JsonContract itemContract = GetContractSafe(type);
JsonConverter itemConverter = GetConverter(itemContract, null, contract, member);
JsonReader tokenReader = token.CreateReader();
CheckedRead(tokenReader); // Move to first token
object result;
if (itemConverter != null && itemConverter.CanRead)
result = DeserializeConvertable(itemConverter, tokenReader, type, null);
else
result = CreateValueInternal(tokenReader, type, itemContract, null, contract, member, null);
return result;
}
private bool WriteStartArray(JsonWriter writer, object values, JsonArrayContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
{
bool isReference = ResolveIsReference(contract, member, containerContract, containerProperty) ?? HasFlag(Serializer._preserveReferencesHandling, PreserveReferencesHandling.Arrays);
bool includeTypeDetails = ShouldWriteType(TypeNameHandling.Arrays, contract, member, containerContract, containerProperty);
bool 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 bool ShouldSetPropertyValue(JsonProperty property, object value)
{
if (property.NullValueHandling.GetValueOrDefault(Serializer._nullValueHandling) == NullValueHandling.Ignore && value == null)
return false;
if (HasFlag(property.DefaultValueHandling.GetValueOrDefault(Serializer._defaultValueHandling), DefaultValueHandling.Ignore)
&& !HasFlag(property.DefaultValueHandling.GetValueOrDefault(Serializer._defaultValueHandling), DefaultValueHandling.Populate)
&& MiscellaneousUtils.ValueEquals(value, property.GetResolvedDefaultValue()))
return false;
if (!property.Writable)
return false;
return true;
}
private void SerializeISerializable(JsonWriter writer, ISerializable value, JsonISerializableContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
if (!JsonTypeReflector.FullyTrusted)
{
string message = @"Type '{0}' implements ISerializable but cannot be serialized using the ISerializable interface because the current application is not fully trusted and ISerializable can expose secure data." + Environment.NewLine +
@"To fix this error either change the environment to be fully trusted, change the application to not deserialize the type, add JsonObjectAttribute to the type or change the JsonSerializer setting ContractResolver to use a new DefaultContractResolver with IgnoreSerializableInterface set to true." + Environment.NewLine;
message = message.FormatWith(CultureInfo.InvariantCulture, value.GetType());
throw JsonSerializationException.Create(null, writer.ContainerPath, message, null);
}
OnSerializing(writer, contract, value);
_serializeStack.Add(value);
WriteObjectStart(writer, value, contract, member, collectionContract, containerProperty);
SerializationInfo serializationInfo = new SerializationInfo(contract.UnderlyingType, new FormatterConverter());
value.GetObjectData(serializationInfo, Serializer._context);
foreach (SerializationEntry serializationEntry in serializationInfo)
{
JsonContract valueContract = GetContractSafe(serializationEntry.Value);
if (ShouldWriteReference(serializationEntry.Value, null, valueContract, contract, member))
{
writer.WritePropertyName(serializationEntry.Name);
WriteReference(writer, serializationEntry.Value);
}
else if (CheckForCircularReference(writer, serializationEntry.Value, null, valueContract, contract, member))
{
writer.WritePropertyName(serializationEntry.Name);
SerializeValue(writer, serializationEntry.Value, valueContract, null, contract, member);
}
}
writer.WriteEndObject();
_serializeStack.RemoveAt(_serializeStack.Count - 1);
OnSerialized(writer, contract, value);
}
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;
}
private void SerializeDynamic(JsonWriter writer, IDynamicMetaObjectProvider value, JsonDynamicContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
OnSerializing(writer, contract, value);
_serializeStack.Add(value);
WriteObjectStart(writer, value, contract, member, collectionContract, containerProperty);
int initialDepth = writer.Top;
for (int index = 0; index < contract.Properties.Count; index++)
{
JsonProperty property = contract.Properties[index];
// only write non-dynamic properties that have an explicit attribute
if (property.HasMemberAttribute)
{
try
{
object memberValue;
JsonContract memberContract;
if (!CalculatePropertyValues(writer, value, contract, member, property, out memberContract, out memberValue))
{
continue;
}
property.WritePropertyName(writer);
SerializeValue(writer, memberValue, memberContract, property, contract, member);
}
catch (Exception ex)
{
if (IsErrorHandled(value, contract, property.PropertyName, null, writer.ContainerPath, ex))
{
HandleError(writer, initialDepth);
}
else
{
throw;
}
}
}
}
foreach (string memberName in value.GetDynamicMemberNames())
{
object memberValue;
if (contract.TryGetMember(value, memberName, out memberValue))
{
try
{
JsonContract valueContract = GetContractSafe(memberValue);
if (!ShouldWriteDynamicProperty(memberValue))
{
continue;
}
if (CheckForCircularReference(writer, memberValue, null, valueContract, contract, member))
{
string resolvedPropertyName = (contract.PropertyNameResolver != null)
? contract.PropertyNameResolver(memberName)
: memberName;
writer.WritePropertyName(resolvedPropertyName);
SerializeValue(writer, memberValue, valueContract, null, contract, member);
}
}
catch (Exception ex)
{
if (IsErrorHandled(value, contract, memberName, null, writer.ContainerPath, ex))
{
HandleError(writer, initialDepth);
}
else
{
throw;
}
}
}
}
writer.WriteEndObject();
_serializeStack.RemoveAt(_serializeStack.Count - 1);
OnSerialized(writer, contract, value);
}
private object CreateISerializable(JsonReader reader, JsonISerializableContract contract, JsonProperty member, string id)
{
Type objectType = contract.UnderlyingType;
if (!JsonTypeReflector.FullyTrusted)
{
throw JsonSerializationException.Create(reader, @"Type '{0}' implements ISerializable but cannot be deserialized using the ISerializable interface because the current application is not fully trusted and ISerializable can expose secure data.
To fix this error either change the environment to be fully trusted, change the application to not deserialize the type, add JsonObjectAttribute to the type or change the JsonSerializer setting ContractResolver to use a new DefaultContractResolver with IgnoreSerializableInterface set to true.
".FormatWith(CultureInfo.InvariantCulture, objectType));
}
if (TraceWriter != null && TraceWriter.LevelFilter >= TraceLevel.Info)
TraceWriter.Trace(TraceLevel.Info, JsonPosition.FormatMessage(reader as IJsonLineInfo, reader.Path, "Deserializing {0} using ISerializable constructor.".FormatWith(CultureInfo.InvariantCulture, contract.UnderlyingType)), null);
SerializationInfo serializationInfo = new SerializationInfo(contract.UnderlyingType, GetFormatterConverter());
bool finished = false;
do
{
switch (reader.TokenType)
{
case JsonToken.PropertyName:
string memberName = reader.Value.ToString();
if (!reader.Read())
throw JsonSerializationException.Create(reader, "Unexpected end when setting {0}'s value.".FormatWith(CultureInfo.InvariantCulture, memberName));
if (reader.TokenType == JsonToken.StartObject)
{
// this will read any potential type names embedded in json
object o = CreateObject(reader, null, null, null, contract, member, null);
serializationInfo.AddValue(memberName, o);
}
else
{
serializationInfo.AddValue(memberName, JToken.ReadFrom(reader));
}
break;
case JsonToken.Comment:
break;
case JsonToken.EndObject:
finished = true;
break;
default:
throw JsonSerializationException.Create(reader, "Unexpected token when deserializing object: " + reader.TokenType);
}
} while (!finished && reader.Read());
if (!finished)
ThrowUnexpectedEndException(reader, contract, serializationInfo, "Unexpected end when deserializing object.");
if (contract.ISerializableCreator == null)
throw JsonSerializationException.Create(reader, "ISerializable type '{0}' does not have a valid constructor. To correctly implement ISerializable a constructor that takes SerializationInfo and StreamingContext parameters should be present.".FormatWith(CultureInfo.InvariantCulture, objectType));
object createdObject = contract.ISerializableCreator(serializationInfo, Serializer._context);
if (id != null)
AddReference(reader, id, createdObject);
// these are together because OnDeserializing takes an object but for an ISerializable the object is fully created in the constructor
OnDeserializing(reader, contract, createdObject);
OnDeserialized(reader, contract, createdObject);
return createdObject;
}
private bool ShouldWriteType(TypeNameHandling typeNameHandlingFlag, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
{
TypeNameHandling resolvedTypeNameHandling =
((member != null) ? member.TypeNameHandling : null)
?? ((containerProperty != null) ? containerProperty.ItemTypeNameHandling : null)
?? ((containerContract != null) ? containerContract.ItemTypeNameHandling : null)
?? Serializer._typeNameHandling;
if (HasFlag(resolvedTypeNameHandling, typeNameHandlingFlag))
{
return(true);
}
// instance type and the property's type's contract default type are different (no need to put the type in JSON because the type will be created by default)
if (HasFlag(resolvedTypeNameHandling, TypeNameHandling.Auto))
{
if (member != null)
{
if (contract.UnderlyingType != member.PropertyContract.CreatedType)
{
return(true);
}
}
else if (containerContract != null)
{
if (containerContract.ItemContract == null || contract.UnderlyingType != containerContract.ItemContract.CreatedType)
{
return(true);
}
}
else if (_rootContract != null && _serializeStack.Count == _rootLevel)
{
if (contract.UnderlyingType != _rootContract.CreatedType)
{
return(true);
}
}
}
return(false);
}
private object CreateObjectUsingCreatorWithParameters(JsonReader reader, JsonObjectContract contract, JsonProperty containerProperty, ObjectConstructor<object> creator, string id)
{
ValidationUtils.ArgumentNotNull(creator, "creator");
// only need to keep a track of properies presence if they are required or a value should be defaulted if missing
Dictionary<JsonProperty, PropertyPresence> propertiesPresence = (contract.HasRequiredOrDefaultValueProperties || HasFlag(Serializer._defaultValueHandling, DefaultValueHandling.Populate))
? contract.Properties.ToDictionary(m => m, m => PropertyPresence.None)
: null;
Type objectType = contract.UnderlyingType;
if (TraceWriter != null && TraceWriter.LevelFilter >= TraceLevel.Info)
{
string parameters = string.Join(", ", contract.CreatorParameters.Select(p => p.PropertyName).ToArray());
TraceWriter.Trace(TraceLevel.Info, JsonPosition.FormatMessage(reader as IJsonLineInfo, reader.Path, "Deserializing {0} using creator with parameters: {1}.".FormatWith(CultureInfo.InvariantCulture, contract.UnderlyingType, parameters)), null);
}
IDictionary<string, object> extensionData;
IDictionary<JsonProperty, object> propertyValues = ResolvePropertyAndCreatorValues(contract, containerProperty, reader, objectType, out extensionData);
object[] creatorParameterValues = new object[contract.CreatorParameters.Count];
IDictionary<JsonProperty, object> remainingPropertyValues = new Dictionary<JsonProperty, object>();
foreach (KeyValuePair<JsonProperty, object> propertyValue in propertyValues)
{
JsonProperty matchingCreatorParameter = contract.CreatorParameters.ForgivingCaseSensitiveFind(p => p.PropertyName, propertyValue.Key.PropertyName);
if (matchingCreatorParameter != null)
{
int i = contract.CreatorParameters.IndexOf(matchingCreatorParameter);
creatorParameterValues[i] = propertyValue.Value;
}
else
{
remainingPropertyValues.Add(propertyValue);
}
if (propertiesPresence != null)
{
// map from creator property to normal property
var property = propertiesPresence.Keys.FirstOrDefault(p => p.PropertyName == propertyValue.Key.PropertyName);
if (property != null)
propertiesPresence[property] = (propertyValue.Value == null) ? PropertyPresence.Null : PropertyPresence.Value;
}
}
object createdObject = creator(creatorParameterValues);
if (id != null)
AddReference(reader, id, createdObject);
OnDeserializing(reader, contract, createdObject);
// go through unused values and set the newly created object's properties
foreach (KeyValuePair<JsonProperty, object> remainingPropertyValue in remainingPropertyValues)
{
JsonProperty property = remainingPropertyValue.Key;
object value = remainingPropertyValue.Value;
if (ShouldSetPropertyValue(property, value))
{
property.ValueProvider.SetValue(createdObject, value);
}
else if (!property.Writable && value != null)
{
// handle readonly collection/dictionary properties
JsonContract propertyContract = Serializer._contractResolver.ResolveContract(property.PropertyType);
if (propertyContract.ContractType == JsonContractType.Array)
{
JsonArrayContract propertyArrayContract = (JsonArrayContract)propertyContract;
object createdObjectCollection = property.ValueProvider.GetValue(createdObject);
if (createdObjectCollection != null)
{
IWrappedCollection createdObjectCollectionWrapper = propertyArrayContract.CreateWrapper(createdObjectCollection);
IWrappedCollection newValues = propertyArrayContract.CreateWrapper(value);
foreach (object newValue in newValues)
{
createdObjectCollectionWrapper.Add(newValue);
}
}
}
else if (propertyContract.ContractType == JsonContractType.Dictionary)
{
JsonDictionaryContract dictionaryContract = (JsonDictionaryContract)propertyContract;
object createdObjectDictionary = property.ValueProvider.GetValue(createdObject);
if (createdObjectDictionary != null)
{
IDictionary targetDictionary = (dictionaryContract.ShouldCreateWrapper) ? dictionaryContract.CreateWrapper(createdObjectDictionary) : (IDictionary)createdObjectDictionary;
IDictionary newValues = (dictionaryContract.ShouldCreateWrapper) ? dictionaryContract.CreateWrapper(value) : (IDictionary)value;
foreach (DictionaryEntry newValue in newValues)
{
targetDictionary.Add(newValue.Key, newValue.Value);
}
}
}
}
}
if (extensionData != null)
{
foreach (KeyValuePair<string, object> e in extensionData)
{
contract.ExtensionDataSetter(createdObject, e.Key, e.Value);
}
}
EndObject(createdObject, reader, contract, reader.Depth, propertiesPresence);
OnDeserialized(reader, contract, createdObject);
return createdObject;
}
private void SerializeMultidimensionalArray(JsonWriter writer, Array values, JsonArrayContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
OnSerializing(writer, contract, values);
_serializeStack.Add(values);
bool 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);
}
public object CreateNewObject(JsonReader reader, JsonObjectContract objectContract, JsonProperty containerMember, JsonProperty containerProperty, string id, out bool createdFromNonDefaultCreator)
{
object newObject = null;
if (objectContract.OverrideCreator != null)
{
if (objectContract.CreatorParameters.Count > 0)
{
createdFromNonDefaultCreator = true;
return CreateObjectUsingCreatorWithParameters(reader, objectContract, containerMember, objectContract.OverrideCreator, id);
}
newObject = objectContract.OverrideCreator(new object[0]);
}
else if (objectContract.DefaultCreator != null &&
(!objectContract.DefaultCreatorNonPublic || Serializer._constructorHandling == ConstructorHandling.AllowNonPublicDefaultConstructor || objectContract.ParametrizedCreator == null))
{
// use the default constructor if it is...
// public
// non-public and the user has change constructor handling settings
// non-public and there is no other creator
newObject = objectContract.DefaultCreator();
}
else if (objectContract.ParametrizedCreator != null)
{
createdFromNonDefaultCreator = true;
return CreateObjectUsingCreatorWithParameters(reader, objectContract, containerMember, objectContract.ParametrizedCreator, id);
}
if (newObject == null)
{
if (!objectContract.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, objectContract.UnderlyingType));
throw JsonSerializationException.Create(reader, "Unable to find a constructor to use for type {0}. A class should either have a default constructor, one constructor with arguments or a constructor marked with the JsonConstructor attribute.".FormatWith(CultureInfo.InvariantCulture, objectContract.UnderlyingType));
}
createdFromNonDefaultCreator = false;
return newObject;
}
private void SerializeMultidimensionalArray(JsonWriter writer, Array values, JsonArrayContract contract, JsonProperty member, int initialDepth, int[] indices)
{
int dimension = indices.Length;
int[] newIndices = new int[dimension + 1];
for (int i = 0; i < dimension; i++)
{
newIndices[i] = indices[i];
}
writer.WriteStartArray();
for (int i = 0; i < values.GetLength(dimension); i++)
{
newIndices[dimension] = i;
bool isTopLevel = (newIndices.Length == values.Rank);
if (isTopLevel)
{
object value = values.GetValue(newIndices);
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(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 SetExtensionData(JsonObjectContract contract, JsonProperty member, JsonReader reader, string memberName, object o)
{
if (contract.ExtensionDataSetter != null)
{
try
{
object value = CreateValueInternal(reader, null, null, null, contract, member, null);
contract.ExtensionDataSetter(o, memberName, value);
}
catch (Exception ex)
{
throw JsonSerializationException.Create(reader, "Error setting value in extension data for type '{0}'.".FormatWith(CultureInfo.InvariantCulture, contract.UnderlyingType), ex);
}
}
else
{
reader.Skip();
}
}
private bool WriteStartArray(JsonWriter writer, object values, JsonArrayContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
{
bool isReference = ResolveIsReference(contract, member, containerContract, containerProperty) ?? HasFlag(Serializer._preserveReferencesHandling, PreserveReferencesHandling.Arrays);
bool includeTypeDetails = ShouldWriteType(TypeNameHandling.Arrays, contract, member, containerContract, containerProperty);
bool 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 object CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, object existingValue)
{
if (contract != null && contract.ContractType == JsonContractType.Linq)
return CreateJToken(reader, contract);
do
{
switch (reader.TokenType)
{
// populate a typed object or generic dictionary/array
// depending upon whether an objectType was supplied
case JsonToken.StartObject:
return CreateObject(reader, objectType, contract, member, containerContract, containerMember, existingValue);
case JsonToken.StartArray:
return CreateList(reader, objectType, contract, member, existingValue, null);
case JsonToken.Integer:
case JsonToken.Float:
case JsonToken.Boolean:
case JsonToken.Date:
case JsonToken.Bytes:
return EnsureType(reader, reader.Value, CultureInfo.InvariantCulture, contract, objectType);
case JsonToken.String:
string s = (string)reader.Value;
// convert empty string to null automatically for nullable types
if (string.IsNullOrEmpty(s) && objectType != typeof(string) && objectType != typeof(object) && contract != null && contract.IsNullable)
return null;
// string that needs to be returned as a byte array should be base 64 decoded
if (objectType == typeof(byte[]))
return Convert.FromBase64String(s);
return EnsureType(reader, s, CultureInfo.InvariantCulture, contract, objectType);
case JsonToken.StartConstructor:
string constructorName = reader.Value.ToString();
return EnsureType(reader, constructorName, CultureInfo.InvariantCulture, contract, objectType);
case JsonToken.Null:
case JsonToken.Undefined:
#if !(NETFX_CORE || PORTABLE40 || PORTABLE)
if (objectType == typeof(DBNull))
return DBNull.Value;
#endif
return EnsureType(reader, reader.Value, CultureInfo.InvariantCulture, contract, objectType);
case JsonToken.Raw:
return new JRaw((string)reader.Value);
case JsonToken.Comment:
// ignore
break;
default:
throw JsonSerializationException.Create(reader, "Unexpected token while deserializing object: " + reader.TokenType);
}
} while (reader.Read());
throw JsonSerializationException.Create(reader, "Unexpected end when deserializing object.");
}
private void SerializeISerializable(JsonWriter writer, ISerializable value, JsonISerializableContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
if (!JsonTypeReflector.FullyTrusted)
{
string message = @"Type '{0}' implements ISerializable but cannot be serialized using the ISerializable interface because the current application is not fully trusted and ISerializable can expose secure data." + Environment.NewLine +
@"To fix this error either change the environment to be fully trusted, change the application to not deserialize the type, add JsonObjectAttribute to the type or change the JsonSerializer setting ContractResolver to use a new DefaultContractResolver with IgnoreSerializableInterface set to true." + Environment.NewLine;
message = message.FormatWith(CultureInfo.InvariantCulture, value.GetType());
throw JsonSerializationException.Create(null, writer.ContainerPath, message, null);
}
OnSerializing(writer, contract, value);
_serializeStack.Add(value);
WriteObjectStart(writer, value, contract, member, collectionContract, containerProperty);
SerializationInfo serializationInfo = new SerializationInfo(contract.UnderlyingType, new FormatterConverter());
value.GetObjectData(serializationInfo, Serializer._context);
foreach (SerializationEntry serializationEntry in serializationInfo)
{
JsonContract valueContract = GetContractSafe(serializationEntry.Value);
if (ShouldWriteReference(serializationEntry.Value, null, valueContract, contract, member))
{
writer.WritePropertyName(serializationEntry.Name);
WriteReference(writer, serializationEntry.Value);
}
else if (CheckForCircularReference(writer, serializationEntry.Value, null, valueContract, contract, member))
{
writer.WritePropertyName(serializationEntry.Name);
SerializeValue(writer, serializationEntry.Value, valueContract, null, contract, member);
}
}
writer.WriteEndObject();
_serializeStack.RemoveAt(_serializeStack.Count - 1);
OnSerialized(writer, contract, value);
}
private object CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, object existingValue)
{
string id;
Type resolvedObjectType = objectType;
if (Serializer.MetadataPropertyHandling == MetadataPropertyHandling.Ignore)
{
// don't look for metadata properties
CheckedRead(reader);
id = null;
}
else if (Serializer.MetadataPropertyHandling == MetadataPropertyHandling.ReadAhead)
{
var tokenReader = reader as JTokenReader;
if (tokenReader == null)
{
JToken t = JToken.ReadFrom(reader);
tokenReader = (JTokenReader)t.CreateReader();
tokenReader.Culture = reader.Culture;
tokenReader.DateFormatString = reader.DateFormatString;
tokenReader.DateParseHandling = reader.DateParseHandling;
tokenReader.DateTimeZoneHandling = reader.DateTimeZoneHandling;
tokenReader.FloatParseHandling = reader.FloatParseHandling;
tokenReader.SupportMultipleContent = reader.SupportMultipleContent;
// start
CheckedRead(tokenReader);
reader = tokenReader;
}
object newValue;
if (ReadMetadataPropertiesToken(tokenReader, ref resolvedObjectType, ref contract, member, containerContract, containerMember, existingValue, out newValue, out id))
return newValue;
}
else
{
CheckedRead(reader);
object newValue;
if (ReadMetadataProperties(reader, ref resolvedObjectType, ref contract, member, containerContract, containerMember, existingValue, out newValue, out id))
return newValue;
}
if (HasNoDefinedType(contract))
return CreateJObject(reader);
switch (contract.ContractType)
{
case JsonContractType.Object:
{
bool createdFromNonDefaultCreator = false;
JsonObjectContract objectContract = (JsonObjectContract)contract;
object targetObject;
// check that if type name handling is being used that the existing value is compatible with the specified type
if (existingValue != null && (resolvedObjectType == objectType || resolvedObjectType.IsAssignableFrom(existingValue.GetType())))
targetObject = existingValue;
else
targetObject = CreateNewObject(reader, objectContract, member, containerMember, id, out createdFromNonDefaultCreator);
// don't populate if read from non-default creator because the object has already been read
if (createdFromNonDefaultCreator)
return targetObject;
return PopulateObject(targetObject, reader, objectContract, member, id);
}
case JsonContractType.Primitive:
{
JsonPrimitiveContract primitiveContract = (JsonPrimitiveContract)contract;
// if the content is inside $value then read past it
if (Serializer.MetadataPropertyHandling != MetadataPropertyHandling.Ignore
&& reader.TokenType == JsonToken.PropertyName
&& string.Equals(reader.Value.ToString(), JsonTypeReflector.ValuePropertyName, StringComparison.Ordinal))
{
CheckedRead(reader);
// the token should not be an object because the $type value could have been included in the object
// without needing the $value property
if (reader.TokenType == JsonToken.StartObject)
throw JsonSerializationException.Create(reader, "Unexpected token when deserializing primitive value: " + reader.TokenType);
object value = CreateValueInternal(reader, resolvedObjectType, primitiveContract, member, null, null, existingValue);
CheckedRead(reader);
return value;
}
break;
}
case JsonContractType.Dictionary:
{
JsonDictionaryContract dictionaryContract = (JsonDictionaryContract)contract;
object targetDictionary;
if (existingValue == null)
{
bool createdFromNonDefaultCreator;
IDictionary dictionary = CreateNewDictionary(reader, dictionaryContract, out createdFromNonDefaultCreator);
if (createdFromNonDefaultCreator)
{
if (id != null)
throw JsonSerializationException.Create(reader, "Cannot preserve reference to readonly dictionary, or dictionary created from a non-default constructor: {0}.".FormatWith(CultureInfo.InvariantCulture, contract.UnderlyingType));
if (contract.OnSerializingCallbacks.Count > 0)
throw JsonSerializationException.Create(reader, "Cannot call OnSerializing on readonly dictionary, or dictionary created from a non-default constructor: {0}.".FormatWith(CultureInfo.InvariantCulture, contract.UnderlyingType));
if (contract.OnErrorCallbacks.Count > 0)
throw JsonSerializationException.Create(reader, "Cannot call OnError on readonly list, or dictionary created from a non-default constructor: {0}.".FormatWith(CultureInfo.InvariantCulture, contract.UnderlyingType));
if (dictionaryContract.ParametrizedCreator == null)
throw JsonSerializationException.Create(reader, "Cannot deserialize readonly or fixed size dictionary: {0}.".FormatWith(CultureInfo.InvariantCulture, contract.UnderlyingType));
}
PopulateDictionary(dictionary, reader, dictionaryContract, member, id);
if (createdFromNonDefaultCreator)
{
return dictionaryContract.ParametrizedCreator(dictionary);
}
else if (dictionary is IWrappedDictionary)
{
return ((IWrappedDictionary)dictionary).UnderlyingDictionary;
}
targetDictionary = dictionary;
}
else
{
targetDictionary = PopulateDictionary(dictionaryContract.ShouldCreateWrapper ? dictionaryContract.CreateWrapper(existingValue) : (IDictionary)existingValue, reader, dictionaryContract, member, id);
}
return targetDictionary;
}
#if !(NET35 || NET20 || PORTABLE40)
case JsonContractType.Dynamic:
JsonDynamicContract dynamicContract = (JsonDynamicContract)contract;
return CreateDynamic(reader, dynamicContract, member, id);
#endif
#if !(NETFX_CORE || PORTABLE40 || PORTABLE)
case JsonContractType.Serializable:
JsonISerializableContract serializableContract = (JsonISerializableContract)contract;
return CreateISerializable(reader, serializableContract, member, id);
#endif
}
throw JsonSerializationException.Create(reader, @"Cannot deserialize the current JSON object (e.g. {{""name"":""value""}}) into type '{0}' because the type requires a {1} to deserialize correctly.
To fix this error either change the JSON to a {1} or change the deserialized type so that it is a normal .NET type (e.g. not a primitive type like integer, not a collection type like an array or List<T>) that can be deserialized from a JSON object. JsonObjectAttribute can also be added to the type to force it to deserialize from a JSON object.
".FormatWith(CultureInfo.InvariantCulture, resolvedObjectType, GetExpectedDescription(contract)));
}
private void SerializeDynamic(JsonWriter writer, IDynamicMetaObjectProvider value, JsonDynamicContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
OnSerializing(writer, contract, value);
_serializeStack.Add(value);
WriteObjectStart(writer, value, contract, member, collectionContract, containerProperty);
int initialDepth = writer.Top;
for (int index = 0; index < contract.Properties.Count; index++)
{
JsonProperty property = contract.Properties[index];
// only write non-dynamic properties that have an explicit attribute
if (property.HasMemberAttribute)
{
try
{
object memberValue;
JsonContract memberContract;
if (!CalculatePropertyValues(writer, value, contract, member, property, out memberContract, out memberValue))
continue;
property.WritePropertyName(writer);
SerializeValue(writer, memberValue, memberContract, property, contract, member);
}
catch (Exception ex)
{
if (IsErrorHandled(value, contract, property.PropertyName, null, writer.ContainerPath, ex))
HandleError(writer, initialDepth);
else
throw;
}
}
}
foreach (string memberName in value.GetDynamicMemberNames())
{
object memberValue;
if (contract.TryGetMember(value, memberName, out memberValue))
{
try
{
JsonContract valueContract = GetContractSafe(memberValue);
if (!ShouldWriteDynamicProperty(memberValue))
continue;
if (CheckForCircularReference(writer, memberValue, null, valueContract, contract, member))
{
string resolvedPropertyName = (contract.PropertyNameResolver != null)
? contract.PropertyNameResolver(memberName)
: memberName;
writer.WritePropertyName(resolvedPropertyName);
SerializeValue(writer, memberValue, valueContract, null, contract, member);
}
}
catch (Exception ex)
{
if (IsErrorHandled(value, contract, memberName, null, writer.ContainerPath, ex))
HandleError(writer, initialDepth);
else
throw;
}
}
}
writer.WriteEndObject();
_serializeStack.RemoveAt(_serializeStack.Count - 1);
OnSerialized(writer, contract, value);
}
private bool ReadMetadataProperties(JsonReader reader, ref Type objectType, ref JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, object existingValue, out object newValue, out string id)
{
id = null;
newValue = null;
if (reader.TokenType == JsonToken.PropertyName)
{
string propertyName = reader.Value.ToString();
if (propertyName.Length > 0 && propertyName[0] == '$')
{
// read metadata properties
// $type, $id, $ref, etc
bool metadataProperty;
do
{
propertyName = reader.Value.ToString();
if (string.Equals(propertyName, JsonTypeReflector.RefPropertyName, StringComparison.Ordinal))
{
CheckedRead(reader);
if (reader.TokenType != JsonToken.String && reader.TokenType != JsonToken.Null)
throw JsonSerializationException.Create(reader, "JSON reference {0} property must have a string or null value.".FormatWith(CultureInfo.InvariantCulture, JsonTypeReflector.RefPropertyName));
string reference = (reader.Value != null) ? reader.Value.ToString() : null;
CheckedRead(reader);
if (reference != null)
{
if (reader.TokenType == JsonToken.PropertyName)
throw JsonSerializationException.Create(reader, "Additional content found in JSON reference object. A JSON reference object should only have a {0} property.".FormatWith(CultureInfo.InvariantCulture, JsonTypeReflector.RefPropertyName));
newValue = Serializer.GetReferenceResolver().ResolveReference(this, reference);
if (TraceWriter != null && TraceWriter.LevelFilter >= TraceLevel.Info)
TraceWriter.Trace(TraceLevel.Info, JsonPosition.FormatMessage(reader as IJsonLineInfo, reader.Path, "Resolved object reference '{0}' to {1}.".FormatWith(CultureInfo.InvariantCulture, reference, newValue.GetType())), null);
return true;
}
else
{
metadataProperty = true;
}
}
else if (string.Equals(propertyName, JsonTypeReflector.TypePropertyName, StringComparison.Ordinal))
{
CheckedRead(reader);
string qualifiedTypeName = reader.Value.ToString();
ResolveTypeName(reader, ref objectType, ref contract, member, containerContract, containerMember, qualifiedTypeName);
CheckedRead(reader);
metadataProperty = true;
}
else if (string.Equals(propertyName, JsonTypeReflector.IdPropertyName, StringComparison.Ordinal))
{
CheckedRead(reader);
id = (reader.Value != null) ? reader.Value.ToString() : null;
CheckedRead(reader);
metadataProperty = true;
}
else if (string.Equals(propertyName, JsonTypeReflector.ArrayValuesPropertyName, StringComparison.Ordinal))
{
CheckedRead(reader);
object list = CreateList(reader, objectType, contract, member, existingValue, id);
CheckedRead(reader);
newValue = list;
return true;
}
else
{
metadataProperty = false;
}
} while (metadataProperty && reader.TokenType == JsonToken.PropertyName);
}
}
return false;
}
private bool ShouldWriteType(TypeNameHandling typeNameHandlingFlag, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
{
TypeNameHandling resolvedTypeNameHandling =
((member != null) ? member.TypeNameHandling : null)
?? ((containerProperty != null) ? containerProperty.ItemTypeNameHandling : null)
?? ((containerContract != null) ? containerContract.ItemTypeNameHandling : null)
?? Serializer._typeNameHandling;
if (HasFlag(resolvedTypeNameHandling, typeNameHandlingFlag))
return true;
// instance type and the property's type's contract default type are different (no need to put the type in JSON because the type will be created by default)
if (HasFlag(resolvedTypeNameHandling, TypeNameHandling.Auto))
{
if (member != null)
{
if (contract.UnderlyingType != member.PropertyContract.CreatedType)
return true;
}
else if (containerContract != null)
{
if (containerContract.ItemContract == null || contract.UnderlyingType != containerContract.ItemContract.CreatedType)
return true;
}
else if (_rootContract != null && _serializeStack.Count == _rootLevel)
{
if (contract.UnderlyingType != _rootContract.CreatedType)
return true;
}
}
return false;
}
private object CreateList(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, object existingValue, string id)
{
object value;
if (HasNoDefinedType(contract))
return CreateJToken(reader, contract);
JsonArrayContract arrayContract = EnsureArrayContract(reader, objectType, contract);
if (existingValue == null)
{
bool createdFromNonDefaultCreator;
IList list = CreateNewList(reader, arrayContract, out createdFromNonDefaultCreator);
if (createdFromNonDefaultCreator)
{
if (id != null)
throw JsonSerializationException.Create(reader, "Cannot preserve reference to array or readonly list, or list created from a non-default constructor: {0}.".FormatWith(CultureInfo.InvariantCulture, contract.UnderlyingType));
if (contract.OnSerializingCallbacks.Count > 0)
throw JsonSerializationException.Create(reader, "Cannot call OnSerializing on an array or readonly list, or list created from a non-default constructor: {0}.".FormatWith(CultureInfo.InvariantCulture, contract.UnderlyingType));
if (contract.OnErrorCallbacks.Count > 0)
throw JsonSerializationException.Create(reader, "Cannot call OnError on an array or readonly list, or list created from a non-default constructor: {0}.".FormatWith(CultureInfo.InvariantCulture, contract.UnderlyingType));
if (arrayContract.ParametrizedCreator == null && !arrayContract.IsArray)
throw JsonSerializationException.Create(reader, "Cannot deserialize readonly or fixed size list: {0}.".FormatWith(CultureInfo.InvariantCulture, contract.UnderlyingType));
}
if (!arrayContract.IsMultidimensionalArray)
PopulateList(list, reader, arrayContract, member, id);
else
PopulateMultidimensionalArray(list, reader, arrayContract, member, id);
if (createdFromNonDefaultCreator)
{
if (arrayContract.IsMultidimensionalArray)
{
list = CollectionUtils.ToMultidimensionalArray(list, arrayContract.CollectionItemType, contract.CreatedType.GetArrayRank());
}
else if (arrayContract.IsArray)
{
Array a = Array.CreateInstance(arrayContract.CollectionItemType, list.Count);
list.CopyTo(a, 0);
list = a;
}
else
{
// call constructor that takes IEnumerable<T>
return arrayContract.ParametrizedCreator(list);
}
}
else if (list is IWrappedCollection)
{
return ((IWrappedCollection)list).UnderlyingCollection;
}
value = list;
}
else
{
value = PopulateList((arrayContract.ShouldCreateWrapper) ? arrayContract.CreateWrapper(existingValue) : (IList)existingValue, reader, arrayContract, member, id);
}
return value;
}
private void SerializeDictionary(JsonWriter writer, IDictionary values, JsonDictionaryContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
IWrappedDictionary wrappedDictionary = values as IWrappedDictionary;
object underlyingDictionary = wrappedDictionary != null ? wrappedDictionary.UnderlyingDictionary : values;
OnSerializing(writer, contract, underlyingDictionary);
_serializeStack.Add(underlyingDictionary);
WriteObjectStart(writer, underlyingDictionary, contract, member, collectionContract, containerProperty);
if (contract.ItemContract == null)
contract.ItemContract = Serializer._contractResolver.ResolveContract(contract.DictionaryValueType ?? typeof(object));
if (contract.KeyContract == null)
contract.KeyContract = Serializer._contractResolver.ResolveContract(contract.DictionaryKeyType ?? typeof(object));
int initialDepth = writer.Top;
foreach (DictionaryEntry entry in values)
{
bool escape;
string propertyName = GetPropertyName(writer, entry.Key, contract.KeyContract, out escape);
propertyName = (contract.PropertyNameResolver != null)
? contract.PropertyNameResolver(propertyName)
: propertyName;
try
{
object value = entry.Value;
JsonContract valueContract = contract.FinalItemContract ?? GetContractSafe(value);
if (ShouldWriteReference(value, null, valueContract, contract, member))
{
writer.WritePropertyName(propertyName, escape);
WriteReference(writer, value);
}
else
{
if (!CheckForCircularReference(writer, value, null, valueContract, contract, member))
continue;
writer.WritePropertyName(propertyName, escape);
SerializeValue(writer, value, valueContract, null, contract, member);
}
}
catch (Exception ex)
{
if (IsErrorHandled(underlyingDictionary, contract, propertyName, null, writer.ContainerPath, ex))
HandleError(writer, initialDepth);
else
throw;
}
}
writer.WriteEndObject();
_serializeStack.RemoveAt(_serializeStack.Count - 1);
OnSerialized(writer, contract, underlyingDictionary);
}
private bool CalculatePropertyDetails(JsonProperty property, ref JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, object target, out bool useExistingValue, out object currentValue, out JsonContract propertyContract, out bool gottenCurrentValue)
{
currentValue = null;
useExistingValue = false;
propertyContract = null;
gottenCurrentValue = false;
if (property.Ignored)
return true;
JsonToken tokenType = reader.TokenType;
if (property.PropertyContract == null)
property.PropertyContract = GetContractSafe(property.PropertyType);
ObjectCreationHandling objectCreationHandling =
property.ObjectCreationHandling.GetValueOrDefault(Serializer._objectCreationHandling);
if ((objectCreationHandling != ObjectCreationHandling.Replace)
&& (tokenType == JsonToken.StartArray || tokenType == JsonToken.StartObject)
&& property.Readable)
{
currentValue = property.ValueProvider.GetValue(target);
gottenCurrentValue = true;
if (currentValue != null)
{
propertyContract = GetContractSafe(currentValue.GetType());
useExistingValue = (!propertyContract.IsReadOnlyOrFixedSize && !propertyContract.UnderlyingType.IsValueType());
}
}
if (!property.Writable && !useExistingValue)
return true;
// test tokentype here because null might not be convertable to some types, e.g. ignoring null when applied to DateTime
if (property.NullValueHandling.GetValueOrDefault(Serializer._nullValueHandling) == NullValueHandling.Ignore && tokenType == JsonToken.Null)
return true;
// test tokentype here because default value might not be convertable to actual type, e.g. default of "" for DateTime
if (HasFlag(property.DefaultValueHandling.GetValueOrDefault(Serializer._defaultValueHandling), DefaultValueHandling.Ignore)
&& !HasFlag(property.DefaultValueHandling.GetValueOrDefault(Serializer._defaultValueHandling), DefaultValueHandling.Populate)
&& JsonReader.IsPrimitiveToken(tokenType)
&& MiscellaneousUtils.ValueEquals(reader.Value, property.GetResolvedDefaultValue()))
return true;
if (currentValue == null)
{
propertyContract = property.PropertyContract;
}
else
{
propertyContract = GetContractSafe(currentValue.GetType());
if (propertyContract != property.PropertyContract)
propertyConverter = GetConverter(propertyContract, property.MemberConverter, containerContract, containerProperty);
}
return false;
}
private void SerializeDictionary(JsonWriter writer, IDictionary values, JsonDictionaryContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
IWrappedDictionary wrappedDictionary = values as IWrappedDictionary;
object underlyingDictionary = wrappedDictionary != null ? wrappedDictionary.UnderlyingDictionary : values;
OnSerializing(writer, contract, underlyingDictionary);
_serializeStack.Add(underlyingDictionary);
WriteObjectStart(writer, underlyingDictionary, contract, member, collectionContract, containerProperty);
if (contract.ItemContract == null)
{
contract.ItemContract = Serializer._contractResolver.ResolveContract(contract.DictionaryValueType ?? typeof(object));
}
if (contract.KeyContract == null)
{
contract.KeyContract = Serializer._contractResolver.ResolveContract(contract.DictionaryKeyType ?? typeof(object));
}
int initialDepth = writer.Top;
foreach (DictionaryEntry entry in values)
{
bool escape;
string propertyName = GetPropertyName(writer, entry.Key, contract.KeyContract, out escape);
propertyName = (contract.PropertyNameResolver != null)
? contract.PropertyNameResolver(propertyName)
: propertyName;
try
{
object value = entry.Value;
JsonContract valueContract = contract.FinalItemContract ?? GetContractSafe(value);
if (ShouldWriteReference(value, null, valueContract, contract, member))
{
writer.WritePropertyName(propertyName, escape);
WriteReference(writer, value);
}
else
{
if (!CheckForCircularReference(writer, value, null, valueContract, contract, member))
{
continue;
}
writer.WritePropertyName(propertyName, escape);
SerializeValue(writer, value, valueContract, null, contract, member);
}
}
catch (Exception ex)
{
if (IsErrorHandled(underlyingDictionary, contract, propertyName, null, writer.ContainerPath, ex))
{
HandleError(writer, initialDepth);
}
else
{
throw;
}
}
}
writer.WriteEndObject();
_serializeStack.RemoveAt(_serializeStack.Count - 1);
OnSerialized(writer, contract, underlyingDictionary);
}
