private JsonMemberMappingCollection CreateMemberMappings(Type objectType)
{
MemberSerialization memberSerialization = JsonTypeReflector.GetObjectMemberSerialization(objectType);
List<MemberInfo> members = GetSerializableMembers(objectType);
if (members == null)
throw new JsonSerializationException("Null collection of seralizable members returned.");
JsonMemberMappingCollection memberMappings = new JsonMemberMappingCollection();
foreach (MemberInfo member in members)
{
JsonMemberMapping memberMapping = CreateMemberMapping(memberSerialization, member);
memberMappings.AddMapping(memberMapping);
}
return memberMappings;
}
private object PopulateObject(object newObject, JsonReader reader, Type objectType)
{
JsonMemberMappingCollection memberMappings = GetMemberMappings(objectType);
Dictionary <string, bool> requiredMappings =
memberMappings.Where(m => m.Required).ToDictionary(m => m.MappingName, m => false);
while (reader.Read())
{
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));
}
if (reader.TokenType != JsonToken.Null)
{
SetRequiredMapping(memberName, requiredMappings);
}
SetObjectMember(reader, newObject, objectType, memberName);
break;
case JsonToken.EndObject:
foreach (KeyValuePair <string, bool> requiredMapping in requiredMappings)
{
if (!requiredMapping.Value)
{
throw new JsonSerializationException("Required property '{0}' not found in JSON.".FormatWith(CultureInfo.InvariantCulture, requiredMapping.Key));
}
}
return(newObject);
default:
throw new JsonSerializationException("Unexpected token when deserializing object: " + reader.TokenType);
}
}
throw new JsonSerializationException("Unexpected end when deserializing object.");
}
private void SerializeObject(JsonWriter writer, object value)
{
Type objectType = value.GetType();
#if !SILVERLIGHT && !PocketPC
TypeConverter converter = TypeDescriptor.GetConverter(objectType);
// use the objectType's TypeConverter if it has one and can convert to a string
if (converter != null && !(converter is ComponentConverter) && (converter.GetType() != typeof(TypeConverter) || value is Type))
{
if (converter.CanConvertTo(typeof(string)))
{
writer.WriteValue(converter.ConvertToInvariantString(value));
return;
}
}
#else
if (value is Guid || value is Type)
{
writer.WriteValue(value.ToString());
return;
}
#endif
writer.SerializeStack.Add(value);
writer.WriteStartObject();
JsonMemberMappingCollection memberMappings = GetMemberMappings(objectType);
foreach (JsonMemberMapping memberMapping in memberMappings)
{
if (!memberMapping.Ignored && memberMapping.Readable)
{
WriteMemberInfoProperty(writer, value, memberMapping);
}
}
writer.WriteEndObject();
writer.SerializeStack.RemoveAt(writer.SerializeStack.Count - 1);
}
private void SetObjectMember(JsonReader reader, object target, Type targetType, string memberName)
{
JsonMemberMappingCollection memberMappings = GetMemberMappings(targetType);
JsonMemberMapping memberMapping;
// attempt exact case match first
// then try match ignoring case
if (memberMappings.TryGetClosestMatchMapping(memberName, out memberMapping))
{
SetMappingValue(memberMapping, reader, target);
}
else
{
if (_missingMemberHandling == MissingMemberHandling.Error)
{
throw new JsonSerializationException("Could not find member '{0}' on object of type '{1}'".FormatWith(CultureInfo.InvariantCulture, memberName, targetType.Name));
}
reader.Skip();
}
}
private object CreateObjectFromNonDefaultConstructor(Type objectType, JsonReader reader)
{
// object should have a single constructor
ConstructorInfo c = objectType.GetConstructors(BindingFlags.Public | BindingFlags.Instance).SingleOrDefault();
if (c == null)
{
throw new JsonSerializationException("Could not find a public constructor for type {0}.".FormatWith(CultureInfo.InvariantCulture, objectType));
}
// create a dictionary to put retrieved values into
JsonMemberMappingCollection memberMappings = GetMemberMappings(objectType);
IDictionary <JsonMemberMapping, object> mappingValues = memberMappings.ToDictionary(kv => kv, kv => (object)null);
bool exit = false;
while (!exit && reader.Read())
{
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));
}
JsonMemberMapping memberMapping;
// attempt exact case match first
// then try match ignoring case
if (memberMappings.TryGetClosestMatchMapping(memberName, out memberMapping))
{
if (!memberMapping.Ignored)
{
Type memberType = ReflectionUtils.GetMemberUnderlyingType(memberMapping.Member);
mappingValues[memberMapping] = CreateObject(reader, memberType, null, memberMapping.MemberConverter);
}
}
else
{
if (_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);
}
}
IDictionary <ParameterInfo, object> constructorParameters = c.GetParameters().ToDictionary(p => p, p => (object)null);
IDictionary <JsonMemberMapping, object> remainingMappingValues = new Dictionary <JsonMemberMapping, object>();
foreach (KeyValuePair <JsonMemberMapping, object> mappingValue in mappingValues)
{
ParameterInfo matchingConstructorParameter = constructorParameters.ForgivingCaseSensitiveFind(kv => kv.Key.Name, mappingValue.Key.MappingName).Key;
if (matchingConstructorParameter != null)
{
constructorParameters[matchingConstructorParameter] = mappingValue.Value;
}
else
{
remainingMappingValues.Add(mappingValue);
}
}
object createdObject = ReflectionUtils.CreateInstance(objectType, constructorParameters.Values.ToArray());
// go through unused values and set the newly created object's properties
foreach (KeyValuePair <JsonMemberMapping, object> remainingMappingValue in remainingMappingValues)
{
if (ShouldSetMappingValue(remainingMappingValue.Key, remainingMappingValue.Value))
{
ReflectionUtils.SetMemberValue(remainingMappingValue.Key.Member, createdObject, remainingMappingValue.Value);
}
}
return(createdObject);
}
