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.ParameterizedCreator == 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.ParameterizedCreator != null)
{
createdFromNonDefaultCreator = true;
return CreateObjectUsingCreatorWithParameters(reader, objectContract, containerMember, objectContract.ParameterizedCreator, 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 SetExtensionData(JsonObjectContract contract, JsonProperty member, JsonReader reader, string memberName, object o)
{
if (contract.ExtensionDataSetter != null)
{
try
{
object value = ReadExtensionDataValue(contract, member, reader);
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 object CreateObjectUsingCreatorWithParameters(JsonReader reader, JsonObjectContract contract, JsonProperty containerProperty, ObjectConstructor<object> creator, string id)
{
ValidationUtils.ArgumentNotNull(creator, nameof(creator));
// only need to keep a track of properies presence if they are required or a value should be defaulted if missing
bool trackPresence = (contract.HasRequiredOrDefaultValueProperties || HasFlag(Serializer._defaultValueHandling, DefaultValueHandling.Populate));
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);
}
List<CreatorPropertyContext> propertyContexts = ResolvePropertyAndCreatorValues(contract, containerProperty, reader, objectType);
if (trackPresence)
{
foreach (JsonProperty property in contract.Properties)
{
if (propertyContexts.All(p => p.Property != property))
{
propertyContexts.Add(new CreatorPropertyContext
{
Property = property,
Name = property.PropertyName,
Presence = PropertyPresence.None
});
}
}
}
object[] creatorParameterValues = new object[contract.CreatorParameters.Count];
foreach (CreatorPropertyContext context in propertyContexts)
{
// set presence of read values
if (trackPresence)
{
if (context.Property != null && context.Presence == null)
{
object v = context.Value;
PropertyPresence propertyPresence;
if (v == null)
{
propertyPresence = PropertyPresence.Null;
}
else if (v is string)
{
propertyPresence = CoerceEmptyStringToNull(context.Property.PropertyType, context.Property.PropertyContract, (string)v)
? PropertyPresence.Null
: PropertyPresence.Value;
}
else
{
propertyPresence = PropertyPresence.Value;
}
context.Presence = propertyPresence;
}
}
JsonProperty constructorProperty = context.ConstructorProperty;
if (constructorProperty == null && context.Property != null)
{
constructorProperty = contract.CreatorParameters.ForgivingCaseSensitiveFind(p => p.PropertyName, context.Property.UnderlyingName);
}
if (constructorProperty != null && !constructorProperty.Ignored)
{
// handle giving default values to creator parameters
// this needs to happen before the call to creator
if (trackPresence)
{
if (context.Presence == PropertyPresence.None || context.Presence == PropertyPresence.Null)
{
if (constructorProperty.PropertyContract == null)
{
constructorProperty.PropertyContract = GetContractSafe(constructorProperty.PropertyType);
}
if (HasFlag(constructorProperty.DefaultValueHandling.GetValueOrDefault(Serializer._defaultValueHandling), DefaultValueHandling.Populate))
{
context.Value = EnsureType(
reader,
constructorProperty.GetResolvedDefaultValue(),
CultureInfo.InvariantCulture,
constructorProperty.PropertyContract,
constructorProperty.PropertyType);
}
}
}
int i = contract.CreatorParameters.IndexOf(constructorProperty);
creatorParameterValues[i] = context.Value;
context.Used = true;
}
}
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 (CreatorPropertyContext context in propertyContexts)
{
if (context.Used ||
context.Property == null ||
context.Property.Ignored ||
context.Presence == PropertyPresence.None)
{
continue;
}
JsonProperty property = context.Property;
object value = context.Value;
if (ShouldSetPropertyValue(property, value))
{
property.ValueProvider.SetValue(createdObject, value);
context.Used = true;
}
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);
}
}
}
context.Used = true;
}
}
if (contract.ExtensionDataSetter != null)
{
foreach (CreatorPropertyContext propertyValue in propertyContexts)
{
if (!propertyValue.Used)
{
contract.ExtensionDataSetter(createdObject, propertyValue.Name, propertyValue.Value);
}
}
}
if (trackPresence)
{
foreach (CreatorPropertyContext context in propertyContexts)
{
if (context.Property == null)
{
continue;
}
EndProcessProperty(
createdObject,
reader,
contract,
reader.Depth,
context.Property,
context.Presence.GetValueOrDefault(),
!context.Used);
}
}
OnDeserialized(reader, contract, createdObject);
return createdObject;
}
private object ReadExtensionDataValue(JsonObjectContract contract, JsonProperty member, JsonReader reader)
{
object value;
if (contract.ExtensionDataIsJToken)
{
value = JToken.ReadFrom(reader);
}
else
{
value = CreateValueInternal(reader, null, null, null, contract, member, null);
}
return value;
}
private List<CreatorPropertyContext> ResolvePropertyAndCreatorValues(JsonObjectContract contract, JsonProperty containerProperty, JsonReader reader, Type objectType)
{
List<CreatorPropertyContext> propertyValues = new List<CreatorPropertyContext>();
bool exit = false;
do
{
switch (reader.TokenType)
{
case JsonToken.PropertyName:
string memberName = reader.Value.ToString();
CreatorPropertyContext creatorPropertyContext = new CreatorPropertyContext
{
Name = reader.Value.ToString(),
ConstructorProperty = contract.CreatorParameters.GetClosestMatchProperty(memberName),
Property = contract.Properties.GetClosestMatchProperty(memberName)
};
propertyValues.Add(creatorPropertyContext);
JsonProperty property = creatorPropertyContext.ConstructorProperty ?? creatorPropertyContext.Property;
if (property != null && !property.Ignored)
{
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 (propertyConverter != null && propertyConverter.CanRead)
{
creatorPropertyContext.Value = DeserializeConvertable(propertyConverter, reader, property.PropertyType, null);
}
else
{
creatorPropertyContext.Value = CreateValueInternal(reader, property.PropertyType, property.PropertyContract, property, contract, containerProperty, null);
}
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 (contract.ExtensionDataSetter != null)
{
creatorPropertyContext.Value = ReadExtensionDataValue(contract, containerProperty, reader);
}
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 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.Ignored || !ShouldDeserialize(reader, property, newObject))
{
if (!reader.Read())
{
break;
}
SetPropertyPresence(reader, property, propertiesPresence);
SetExtensionData(contract, member, reader, memberName, newObject);
}
else
{
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.");
}
if (propertiesPresence != null)
{
foreach (KeyValuePair<JsonProperty, PropertyPresence> propertyPresence in propertiesPresence)
{
JsonProperty property = propertyPresence.Key;
PropertyPresence presence = propertyPresence.Value;
EndProcessProperty(newObject, reader, contract, initialDepth, property, presence, true);
}
}
OnDeserialized(reader, contract, newObject);
return newObject;
}
private void EndProcessProperty(object newObject, JsonReader reader, JsonObjectContract contract, int initialDepth, JsonProperty property, PropertyPresence presence, bool setDefaultValue)
{
if (presence == PropertyPresence.None || presence == PropertyPresence.Null)
{
try
{
Required resolvedRequired = property._required ?? contract.ItemRequired ?? Required.Default;
switch (presence)
{
case PropertyPresence.None:
if (resolvedRequired == Required.AllowNull || resolvedRequired == Required.Always)
{
throw JsonSerializationException.Create(reader, "Required property '{0}' not found in JSON.".FormatWith(CultureInfo.InvariantCulture, property.PropertyName));
}
if (setDefaultValue && !property.Ignored)
{
if (property.PropertyContract == null)
{
property.PropertyContract = GetContractSafe(property.PropertyType);
}
if (HasFlag(property.DefaultValueHandling.GetValueOrDefault(Serializer._defaultValueHandling), DefaultValueHandling.Populate) && property.Writable)
{
property.ValueProvider.SetValue(newObject, EnsureType(reader, property.GetResolvedDefaultValue(), CultureInfo.InvariantCulture, property.PropertyContract, property.PropertyType));
}
}
break;
case PropertyPresence.Null:
if (resolvedRequired == Required.Always)
{
throw JsonSerializationException.Create(reader, "Required property '{0}' expects a value but got null.".FormatWith(CultureInfo.InvariantCulture, property.PropertyName));
}
if (resolvedRequired == Required.DisallowNull)
{
throw JsonSerializationException.Create(reader, "Required property '{0}' expects a non-null value.".FormatWith(CultureInfo.InvariantCulture, property.PropertyName));
}
break;
}
}
catch (Exception ex)
{
if (IsErrorHandled(newObject, contract, property.PropertyName, reader as IJsonLineInfo, reader.Path, ex))
{
HandleError(reader, true, initialDepth);
}
else
{
throw;
}
}
}
}
private void GenerateObjectSchema(Type type, JsonObjectContract contract)
{
CurrentSchema.Properties = new Dictionary<string, JsonSchema>();
foreach (JsonProperty property in contract.Properties)
{
if (!property.Ignored)
{
bool optional = property.NullValueHandling == NullValueHandling.Ignore ||
HasFlag(property.DefaultValueHandling.GetValueOrDefault(), DefaultValueHandling.Ignore) ||
property.ShouldSerialize != null ||
property.GetIsSpecified != null;
JsonSchema propertySchema = GenerateInternal(property.PropertyType, property.Required, !optional);
if (property.DefaultValue != null)
{
propertySchema.Default = JToken.FromObject(property.DefaultValue);
}
CurrentSchema.Properties.Add(property.PropertyName, propertySchema);
}
}
if (type.IsSealed())
{
CurrentSchema.AllowAdditionalProperties = false;
}
}
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 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);
}
