private void SerializeObject(JsonWriter writer, object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
{
contract.InvokeOnSerializing(value, Serializer.Context);
_serializeStack.Add(value);
WriteObjectStart(writer, value, contract, member, collectionContract, containerProperty);
int initialDepth = writer.Top;
foreach (JsonProperty property in contract.Properties)
{
try
{
object memberValue;
JsonContract memberContract;
if (!CalculatePropertyValues(writer, value, contract, member, property, out memberContract, out memberValue))
continue;
writer.WritePropertyName(property.PropertyName);
SerializeValue(writer, memberValue, memberContract, property, contract, member);
}
catch (Exception ex)
{
if (IsErrorHandled(value, contract, property.PropertyName, writer.ContainerPath, ex))
HandleError(writer, initialDepth);
else
throw;
}
}
writer.WriteEndObject();
_serializeStack.RemoveAt(_serializeStack.Count - 1);
contract.InvokeOnSerialized(value, Serializer.Context);
}
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 EndObject(object newObject, JsonReader reader, JsonObjectContract contract, int initialDepth, Dictionary<JsonProperty, PropertyPresence> propertiesPresence)
{
if (propertiesPresence != null)
{
foreach (KeyValuePair<JsonProperty, PropertyPresence> propertyPresence in propertiesPresence)
{
JsonProperty property = propertyPresence.Key;
PropertyPresence presence = propertyPresence.Value;
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 (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.DefaultValue, 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));
break;
}
}
catch (Exception ex)
{
if (IsErrorHandled(newObject, contract, property.PropertyName, reader.Path, ex))
HandleError(reader, true, initialDepth);
else
throw;
}
}
}
}
}
private object PopulateObject(object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, string id)
{
contract.InvokeOnDeserializing(newObject, Serializer.Context);
// 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)
Serializer.ReferenceResolver.AddReference(this, id, newObject);
int initialDepth = reader.Depth;
bool finished = false;
do
{
switch (reader.TokenType)
{
case JsonToken.PropertyName:
{
string memberName = reader.Value.ToString();
try
{
// attempt exact case match first
// then try match ignoring case
JsonProperty property = contract.Properties.GetClosestMatchProperty(memberName);
if (property == 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));
reader.Skip();
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);
SetPropertyValue(property, propertyConverter, contract, member, reader, newObject);
}
catch (Exception ex)
{
if (IsErrorHandled(newObject, contract, memberName, 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);
contract.InvokeOnDeserialized(newObject, Serializer.Context);
return newObject;
}
public object CreateNewObject(JsonReader reader, JsonObjectContract objectContract, JsonProperty containerMember, JsonProperty containerProperty, string id, out bool createdFromNonDefaultConstructor)
{
object newObject = null;
if (objectContract.UnderlyingType.IsInterface() || objectContract.UnderlyingType.IsAbstract())
throw JsonSerializationException.Create(reader, "Could not create an instance of type {0}. Type is an interface or abstract class and cannot be instantated.".FormatWith(CultureInfo.InvariantCulture, objectContract.UnderlyingType));
if (objectContract.OverrideConstructor != null)
{
if (objectContract.OverrideConstructor.GetParameters().Length > 0)
{
createdFromNonDefaultConstructor = true;
return CreateObjectFromNonDefaultConstructor(reader, objectContract, containerMember, objectContract.OverrideConstructor, id);
}
newObject = objectContract.OverrideConstructor.Invoke(null);
}
else if (objectContract.DefaultCreator != null &&
(!objectContract.DefaultCreatorNonPublic || Serializer.ConstructorHandling == ConstructorHandling.AllowNonPublicDefaultConstructor || objectContract.ParametrizedConstructor == 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 constructor
newObject = objectContract.DefaultCreator();
}
else if (objectContract.ParametrizedConstructor != null)
{
createdFromNonDefaultConstructor = true;
return CreateObjectFromNonDefaultConstructor(reader, objectContract, containerMember, objectContract.ParametrizedConstructor, id);
}
if (newObject == null)
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));
createdFromNonDefaultConstructor = false;
return newObject;
}
private IDictionary<JsonProperty, object> ResolvePropertyAndConstructorValues(JsonObjectContract contract, JsonProperty containerProperty, JsonReader reader, Type objectType)
{
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.ConstructorParameters.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 = propertyConverter.ReadJson(reader, property.PropertyType, null, GetInternalSerializer());
else
propertyValue = CreateValueInternal(reader, property.PropertyType, property.PropertyContract, property, contract, containerProperty, null);
propertyValues[property] = propertyValue;
}
else
{
reader.Skip();
}
}
else
{
if (!reader.Read())
throw JsonSerializationException.Create(reader, "Unexpected end when setting {0}'s value.".FormatWith(CultureInfo.InvariantCulture, memberName));
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));
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 CreateObjectFromNonDefaultConstructor(JsonReader reader, JsonObjectContract contract, JsonProperty containerProperty, ConstructorInfo constructorInfo, string id)
{
ValidationUtils.ArgumentNotNull(constructorInfo, "constructorInfo");
Type objectType = contract.UnderlyingType;
IDictionary<JsonProperty, object> propertyValues = ResolvePropertyAndConstructorValues(contract, containerProperty, reader, objectType);
IDictionary<ParameterInfo, object> constructorParameters = constructorInfo.GetParameters().ToDictionary(p => p, p => (object) null);
IDictionary<JsonProperty, object> remainingPropertyValues = new Dictionary<JsonProperty, object>();
foreach (KeyValuePair<JsonProperty, object> propertyValue in propertyValues)
{
ParameterInfo matchingConstructorParameter = constructorParameters.ForgivingCaseSensitiveFind(kv => kv.Key.Name, propertyValue.Key.UnderlyingName).Key;
if (matchingConstructorParameter != null)
constructorParameters[matchingConstructorParameter] = propertyValue.Value;
else
remainingPropertyValues.Add(propertyValue);
}
object createdObject = constructorInfo.Invoke(constructorParameters.Values.ToArray());
if (id != null)
Serializer.ReferenceResolver.AddReference(this, id, createdObject);
contract.InvokeOnDeserializing(createdObject, Serializer.Context);
// 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(remainingPropertyValue.Key, remainingPropertyValue.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 jsonDictionaryContract = (JsonDictionaryContract)propertyContract;
object createdObjectDictionary = property.ValueProvider.GetValue(createdObject);
if (createdObjectDictionary != null)
{
IWrappedDictionary createdObjectDictionaryWrapper = jsonDictionaryContract.CreateWrapper(createdObjectDictionary);
IWrappedDictionary newValues = jsonDictionaryContract.CreateWrapper(value);
foreach (DictionaryEntry newValue in newValues)
{
createdObjectDictionaryWrapper.Add(newValue.Key, newValue.Value);
}
}
}
}
}
contract.InvokeOnDeserialized(createdObject, Serializer.Context);
return createdObject;
}
