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(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))
{
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 ||
property.DefaultValueHandling == DefaultValueHandling.Ignore ||
property.ShouldSerialize != 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 object CreateObjectFromNonDefaultConstructor(JsonReader reader, JsonObjectContract contract, string id)
{
Type objectType = contract.UnderlyingType;
if (contract.ParametrizedConstructor == null)
throw new JsonSerializationException("Unable to find a constructor to use for type {0}. A class should either have a default constructor or only one constructor with arguments.".FormatWith(CultureInfo.InvariantCulture, objectType));
// create a dictionary to put retrieved values into
IDictionary<JsonProperty, object> propertyValues = contract.Properties.Where(p => !p.Ignored).ToDictionary(kv => kv, kv => (object)null);
bool exit = false;
do
{
switch (reader.TokenType)
{
case JsonToken.PropertyName:
string memberName = reader.Value.ToString();
if (!reader.Read())
throw new JsonSerializationException("Unexpected end when setting {0}'s value.".FormatWith(CultureInfo.InvariantCulture, memberName));
// attempt exact case match first
// then try match ignoring case
JsonProperty property = contract.Properties.GetClosestMatchProperty(memberName);
if (property != null)
{
if (!property.Ignored)
propertyValues[property] = CreateValueProperty(reader, property, null, true, null);
else
reader.Skip();
}
else
{
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.EndObject:
exit = true;
break;
default:
throw new JsonSerializationException("Unexpected token when deserializing object: " + reader.TokenType);
}
} while (!exit && reader.Read());
IDictionary<ParameterInfo, object> constructorParameters = contract.ParametrizedConstructor.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.PropertyName).Key;
if (matchingConstructorParameter != null)
constructorParameters[matchingConstructorParameter] = propertyValue.Value;
else
remainingPropertyValues.Add(propertyValue);
}
object createdObject = contract.ParametrizedConstructor.Invoke(constructorParameters.Values.ToArray());
if (id != null)
Serializer.ReferenceResolver.AddReference(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);
}
contract.InvokeOnDeserialized(createdObject, Serializer.Context);
return createdObject;
}
private object PopulateObject(object newObject, JsonReader reader, JsonObjectContract contract, string id)
{
contract.InvokeOnDeserializing(newObject, Serializer.Context);
Dictionary<JsonProperty, RequiredValue> requiredProperties =
contract.Properties.Where(m => m.Required != Required.Default).ToDictionary(m => m, m => RequiredValue.None);
if (id != null)
Serializer.ReferenceResolver.AddReference(id, newObject);
int initialDepth = reader.Depth;
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.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 (property.PropertyType == typeof(byte[]))
{
reader.ReadAsBytes();
}
else
{
if (!reader.Read())
throw new JsonSerializationException("Unexpected end when setting {0}'s value.".FormatWith(CultureInfo.InvariantCulture, memberName));
}
SetRequiredProperty(reader, property, requiredProperties);
try
{
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, RequiredValue> requiredProperty in requiredProperties)
{
if (requiredProperty.Value == RequiredValue.None)
throw new JsonSerializationException("Required property '{0}' not found in JSON.".FormatWith(CultureInfo.InvariantCulture, requiredProperty.Key.PropertyName));
if (requiredProperty.Key.Required == Required.Always && requiredProperty.Value == RequiredValue.Null)
throw new JsonSerializationException("Required property '{0}' expects a value but got null.".FormatWith(CultureInfo.InvariantCulture, requiredProperty.Key.PropertyName));
}
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 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.DefaultCreator != null &&
(!contract.DefaultCreatorNonPublic || Serializer.ConstructorHandling == ConstructorHandling.AllowNonPublicDefaultConstructor))
{
newObject = contract.DefaultCreator();
}
if (newObject != null)
{
PopulateObject(newObject, reader, contract, id);
return newObject;
}
return CreateObjectFromNonDefaultConstructor(reader, contract, id);
}
