private bool ShouldSetMappingValue(JsonMemberMapping memberMapping, object value)
{
if (_nullValueHandling == NullValueHandling.Ignore && value == null)
return false;
if (_defaultValueHandling == DefaultValueHandling.Ignore && Equals(value, memberMapping.DefaultValue))
return false;
if (!memberMapping.Writable)
return false;
return true;
}
private void WriteMemberInfoProperty(JsonWriter writer, object value, JsonMemberMapping memberMapping)
{
MemberInfo member = memberMapping.Member;
string propertyName = memberMapping.MappingName;
JsonConverter memberConverter = memberMapping.MemberConverter;
object defaultValue = memberMapping.DefaultValue;
if (!ReflectionUtils.IsIndexedProperty(member))
{
object memberValue = ReflectionUtils.GetMemberValue(member, value);
if (_nullValueHandling == NullValueHandling.Ignore && memberValue == null)
return;
if (_defaultValueHandling == DefaultValueHandling.Ignore && object.Equals(memberValue, defaultValue))
return;
if (writer.SerializeStack.IndexOf(memberValue) != -1)
{
switch (_referenceLoopHandling)
{
case ReferenceLoopHandling.Error:
throw new JsonSerializationException("Self referencing loop");
case ReferenceLoopHandling.Ignore:
// return from method
return;
case ReferenceLoopHandling.Serialize:
// continue
break;
default:
throw new InvalidOperationException("Unexpected ReferenceLoopHandling value: '{0}'".FormatWith(CultureInfo.InvariantCulture, _referenceLoopHandling));
}
}
writer.WritePropertyName(propertyName ?? member.Name);
SerializeValue(writer, memberValue, memberConverter);
}
}
private void SetMappingValue(JsonMemberMapping memberMapping, JsonReader reader, object target)
{
if (memberMapping.Ignored)
{
reader.Skip();
return;
}
// get the member's underlying type
Type memberType = ReflectionUtils.GetMemberUnderlyingType(memberMapping.Member);
object currentValue = null;
bool useExistingValue = false;
if ((_objectCreationHandling == ObjectCreationHandling.Auto || _objectCreationHandling == ObjectCreationHandling.Reuse)
&& (reader.TokenType == JsonToken.StartArray || reader.TokenType == JsonToken.StartObject))
{
currentValue = ReflectionUtils.GetMemberValue(memberMapping.Member, target);
useExistingValue = (currentValue != null && !memberType.IsArray && !ReflectionUtils.InheritsGenericDefinition(memberType, typeof(ReadOnlyCollection<>)));
}
if (!memberMapping.Writable && !useExistingValue)
{
reader.Skip();
return;
}
object value = CreateObject(reader, memberType, (useExistingValue) ? currentValue : null, JsonTypeReflector.GetConverter(memberMapping.Member, memberType));
if (!useExistingValue && ShouldSetMappingValue(memberMapping, value))
ReflectionUtils.SetMemberValue(memberMapping.Member, target, value);
}
