private bool CalculatePropertyDetails (JsonProperty property, ref JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, object target, out bool useExistingValue, out object currentValue, out JsonContract propertyContract, out bool gottenCurrentValue)
{
currentValue = null;
useExistingValue = false;
propertyContract = null;
gottenCurrentValue = false;
if (property.Ignored)
return true;
JsonToken tokenType = reader.TokenType;
if (property.PropertyContract == null)
property.PropertyContract = GetContractSafe(property.PropertyType);
ObjectCreationHandling objectCreationHandling =
property.ObjectCreationHandling.GetValueOrDefault(Serializer._objectCreationHandling);
if ((objectCreationHandling != ObjectCreationHandling.Replace)
&& (tokenType == JsonToken.StartArray || tokenType == JsonToken.StartObject)
&& property.Readable) {
currentValue = property.ValueProvider.GetValue(target);
gottenCurrentValue = true;
if (currentValue != null) {
propertyContract = GetContractSafe(currentValue.GetType());
useExistingValue = (!propertyContract.IsReadOnlyOrFixedSize && !propertyContract.UnderlyingType.IsValueType());
}
}
if (!property.Writable && !useExistingValue)
return true;
// test tokentype here because null might not be convertable to some types, e.g. ignoring null when applied to DateTime
if (property.NullValueHandling.GetValueOrDefault(Serializer._nullValueHandling) == NullValueHandling.Ignore && tokenType == JsonToken.Null)
return true;
// test tokentype here because default value might not be convertable to actual type, e.g. default of "" for DateTime
if (HasFlag(property.DefaultValueHandling.GetValueOrDefault(Serializer._defaultValueHandling), DefaultValueHandling.Ignore)
&& !HasFlag(property.DefaultValueHandling.GetValueOrDefault(Serializer._defaultValueHandling), DefaultValueHandling.Populate)
&& JsonReader.IsPrimitiveToken(tokenType)
&& MiscellaneousUtils.ValueEquals(reader.Value, property.GetResolvedDefaultValue()))
return true;
if (currentValue == null) {
propertyContract = property.PropertyContract;
}
else {
propertyContract = GetContractSafe(currentValue.GetType());
if (propertyContract != property.PropertyContract)
propertyConverter = GetConverter(propertyContract, property.MemberConverter, containerContract, containerProperty);
}
return false;
}
private bool ShouldSetPropertyValue (JsonProperty property, object value)
{
if (property.NullValueHandling.GetValueOrDefault(Serializer._nullValueHandling) == NullValueHandling.Ignore && value == null)
return false;
if (HasFlag(property.DefaultValueHandling.GetValueOrDefault(Serializer._defaultValueHandling), DefaultValueHandling.Ignore)
&& !HasFlag(property.DefaultValueHandling.GetValueOrDefault(Serializer._defaultValueHandling), DefaultValueHandling.Populate)
&& MiscellaneousUtils.ValueEquals(value, property.GetResolvedDefaultValue()))
return false;
if (!property.Writable)
return false;
return true;
}
private bool ShouldWriteProperty(object memberValue, JsonProperty property)
{
if (property.NullValueHandling.GetValueOrDefault(Serializer._nullValueHandling) == NullValueHandling.Ignore &&
memberValue == null)
return false;
if (HasFlag(property.DefaultValueHandling.GetValueOrDefault(Serializer._defaultValueHandling), DefaultValueHandling.Ignore)
&& MiscellaneousUtils.ValueEquals(memberValue, property.GetResolvedDefaultValue()))
return false;
return true;
}