private IDictionary<JsonProperty, object> ResolvePropertyAndConstructorValues(JsonObjectContract contract, 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 (!ReadForType(reader, property.PropertyType, property.Converter))
throw new JsonSerializationException("Unexpected end when setting {0}'s value.".FormatWith(CultureInfo.InvariantCulture, memberName));
if (!property.Ignored)
propertyValues[property] = CreateValueProperty(reader, property, null, true, null);
else
reader.Skip();
}
else
{
if (!reader.Read())
throw new JsonSerializationException("Unexpected end when setting {0}'s value.".FormatWith(CultureInfo.InvariantCulture, memberName));
if (Serializer.MissingMemberHandling == MissingMemberHandling.Error)
throw new JsonSerializationException("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 new JsonSerializationException("Unexpected token when deserializing object: " + reader.TokenType);
}
} while (!exit && reader.Read());
return propertyValues;
}
private object CreateObjectFromNonDefaultConstructor(JsonReader reader, JsonObjectContract contract, ConstructorInfo constructorInfo, string id)
{
ValidationUtils.ArgumentNotNull(constructorInfo, "constructorInfo");
Type objectType = contract.UnderlyingType;
IDictionary<JsonProperty, object> propertyValues = ResolvePropertyAndConstructorValues(contract, 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 is JsonArrayContract)
{
JsonArrayContract propertyArrayContract = propertyContract as JsonArrayContract;
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 is JsonDictionaryContract)
{
JsonDictionaryContract jsonDictionaryContract = propertyContract as JsonDictionaryContract;
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;
}
private object CreateAndPopulateObject(JsonReader reader, JsonObjectContract contract, string id)
{
object newObject = null;
if (contract.UnderlyingType.IsInterface || contract.UnderlyingType.IsAbstract)
throw new JsonSerializationException("Could not create an instance of type {0}. Type is an interface or abstract class and cannot be instantated.".FormatWith(CultureInfo.InvariantCulture, contract.UnderlyingType));
if (contract.OverrideConstructor != null)
{
if (contract.OverrideConstructor.GetParameters().Length > 0)
return CreateObjectFromNonDefaultConstructor(reader, contract, contract.OverrideConstructor, id);
newObject = contract.OverrideConstructor.Invoke(null);
}
else if (contract.DefaultCreator != null &&
(!contract.DefaultCreatorNonPublic || Serializer.ConstructorHandling == ConstructorHandling.AllowNonPublicDefaultConstructor))
{
newObject = contract.DefaultCreator();
}
else if (contract.ParametrizedConstructor != null)
{
return CreateObjectFromNonDefaultConstructor(reader, contract, contract.ParametrizedConstructor, id);
}
if (newObject == null)
throw new JsonSerializationException("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, contract.UnderlyingType));
PopulateObject(newObject, reader, contract, id);
return newObject;
}
private object PopulateObject(object newObject, JsonReader reader, JsonObjectContract contract, string id)
{
contract.InvokeOnDeserializing(newObject, Serializer.Context);
Dictionary<JsonProperty, PropertyPresence> propertiesPresence =
contract.Properties.ToDictionary(m => m, m => PropertyPresence.None);
if (id != null)
Serializer.ReferenceResolver.AddReference(this, id, newObject);
int initialDepth = reader.Depth;
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 new JsonSerializationException("Could not find member '{0}' on object of type '{1}'".FormatWith(CultureInfo.InvariantCulture, memberName, contract.UnderlyingType.Name));
reader.Skip();
continue;
}
if (!ReadForType(reader, property.PropertyType, property.Converter))
throw new JsonSerializationException("Unexpected end when setting {0}'s value.".FormatWith(CultureInfo.InvariantCulture, memberName));
SetPropertyPresence(reader, property, propertiesPresence);
SetPropertyValue(property, reader, newObject);
}
catch (Exception ex)
{
if (IsErrorHandled(newObject, contract, memberName, ex))
HandleError(reader, initialDepth);
else
throw;
}
break;
case JsonToken.EndObject:
foreach (KeyValuePair<JsonProperty, PropertyPresence> propertyPresence in propertiesPresence)
{
JsonProperty property = propertyPresence.Key;
PropertyPresence presence = propertyPresence.Value;
switch (presence)
{
case PropertyPresence.None:
if (property.Required == Required.AllowNull || property.Required == Required.Always)
throw new JsonSerializationException("Required property '{0}' not found in JSON.".FormatWith(CultureInfo.InvariantCulture, property.PropertyName));
if (HasFlag(property.DefaultValueHandling.GetValueOrDefault(Serializer.DefaultValueHandling), DefaultValueHandling.Populate)
&& property.Writable)
property.ValueProvider.SetValue(newObject, EnsureType(property.DefaultValue, CultureInfo.InvariantCulture, property.PropertyType));
break;
case PropertyPresence.Null:
if (property.Required == Required.Always)
throw new JsonSerializationException("Required property '{0}' expects a value but got null.".FormatWith(CultureInfo.InvariantCulture, property.PropertyName));
break;
}
}
contract.InvokeOnDeserialized(newObject, Serializer.Context);
return newObject;
case JsonToken.Comment:
// ignore
break;
default:
throw new JsonSerializationException("Unexpected token when deserializing object: " + reader.TokenType);
}
} while (reader.Read());
throw new JsonSerializationException("Unexpected end when deserializing object.");
}
private void SerializeObject(JsonWriter writer, object value, JsonObjectContract contract, JsonProperty member, JsonContract collectionValueContract)
{
contract.InvokeOnSerializing(value, Serializer.Context);
SerializeStack.Add(value);
writer.WriteStartObject();
bool isReference = contract.IsReference ?? HasFlag(Serializer.PreserveReferencesHandling, PreserveReferencesHandling.Objects);
if (isReference)
{
writer.WritePropertyName(JsonTypeReflector.IdPropertyName);
writer.WriteValue(Serializer.ReferenceResolver.GetReference(this, value));
}
if (ShouldWriteType(TypeNameHandling.Objects, contract, member, collectionValueContract))
{
WriteTypeProperty(writer, contract.UnderlyingType);
}
int initialDepth = writer.Top;
foreach (JsonProperty property in contract.Properties)
{
try
{
if (!property.Ignored && property.Readable && ShouldSerialize(property, value) && IsSpecified(property, value))
{
object memberValue = property.ValueProvider.GetValue(value);
JsonContract memberContract = GetContractSafe(memberValue);
WriteMemberInfoProperty(writer, memberValue, property, memberContract);
}
}
catch (Exception ex)
{
if (IsErrorHandled(value, contract, property.PropertyName, 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;
}