private object ReadJsonInternal(IJsonNetReader reader, Type objectType, object existingValue, IJsonNetSerializer serializer, int depth)
{
// mbr - 2016-07-07 - if we get null, quit...
if (reader.TokenType == JsonNetTokenShim.Null)
{
return(null);
}
string readingName = null;
// walk...
var dto = (IDtoBase)Activator.CreateInstance(objectType);
while (true)
{
var didPeek = false;
// what did we get?
if (reader.TokenType == JsonNetTokenShim.EndObject)
{
break;
}
else if (reader.TokenType == JsonNetTokenShim.PropertyName)
{
readingName = (string)reader.Value;
}
else if (reader.TokenType == JsonNetTokenShim.String || reader.TokenType == JsonNetTokenShim.Boolean || reader.TokenType == JsonNetTokenShim.Integer ||
reader.TokenType == JsonNetTokenShim.Float || reader.TokenType == JsonNetTokenShim.Date || reader.TokenType == JsonNetTokenShim.Null)
{
// field...
var field = dto.Type.GetFieldByJsonName(readingName, false);
if (field != null)
{
// set...
if (field.CanWrite)
{
dto[field] = reader.Value;
}
}
else
{
// mbr - 2015-06-17 - we might have a property that's not mapped to a field. this will happen if we
// use a DtoBase<> as a base type (e.g. "SaveOrderLineDto")...
var prop = GetAdhocProperty(dto.GetType(), readingName);
if (prop != null && prop.CanWrite)
{
var toSet = ConversionHelper.ChangeType(reader.Value, prop.PropertyType);
prop.SetValue(dto, toSet);
}
}
// reset...
readingName = null;
}
else if (reader.TokenType == JsonNetTokenShim.StartObject)
{
if (!(string.IsNullOrEmpty(readingName)))
{
var member = dto.Type.GetMemberByJsonName(readingName, false);
if (member != null)
{
// what is it?
if (typeof(IDtoBase).IsAssignableFrom(member.ValueType))
{
// read something we know...
var inner = (IDtoBase)this.ReadJsonInternal(reader, member.ValueType, existingValue, serializer, depth + 1);
// set...
if (member is DtoLink)
{
dto.SetLink((DtoLink)member, inner);
}
else
{
throw new NotSupportedException(string.Format("Cannot handle '{0}'.", member.GetType()));
}
}
else
{
// read it generally...
//var inner = serializer.;
//var prop = this.GetAdhocProperty(member.ValueType, member.JsonName);
//if (prop != null && prop.CanWrite)
// prop.SetValue(dto, inner);
throw new NotImplementedException("This operation has not been implemented.");
}
}
else
{
// drain here...
while (true)
{
if (!(reader.Read()))
{
throw new InvalidOperationException("End of stream encountered whilst looking for end of object. ");
}
// stop?
if (reader.TokenType == JsonNetTokenShim.EndObject)
{
break;
}
}
}
}
}
else if (reader.TokenType == JsonNetTokenShim.StartArray)
{
// find the field...
var field = dto.Type.GetFieldByJsonName(readingName, false);
if (field != null)
{
// go next...
if (!(reader.Read()))
{
throw new InvalidOperationException("End of stream encountered whilst stepping into array.");
}
// get the object type...
Type subtype = null;
if (typeof(IEnumerable).IsAssignableFrom(field.DtoProperty.PropertyType))
{
if (field.DtoProperty.PropertyType.GenericTypeArguments.Length == 1)
{
subtype = field.DtoProperty.PropertyType.GenericTypeArguments[0];
}
else
{
throw new NotSupportedException(string.Format("A parameter of set length '{0}' is invalid.", field.DtoProperty.PropertyType.GenericTypeArguments.Length));
}
}
else
{
throw new NotSupportedException(string.Format("Cannot handle '{0}'.", field.DtoProperty.PropertyType));
}
// read...
var readingList = (IList)Activator.CreateInstance(field.DtoProperty.PropertyType);
while (true)
{
var inner = this.ReadJsonInternal(reader, subtype, existingValue, serializer, depth + 1);
if (inner == null)
{
throw new InvalidOperationException("'inner' is null.");
}
// add...
readingList.Add(inner);
// now what?
if (!(reader.Read()))
{
throw new InvalidOperationException("End of stream encountered whilst peaking array end.");
}
// what did we get?
if (reader.TokenType == JsonNetTokenShim.StartObject)
{
}
else if (reader.TokenType == JsonNetTokenShim.EndArray)
{
// set the result...
dto[field] = readingList;
// go back to the top of the loop...
didPeek = true;
break;
}
else
{
throw new NotSupportedException(string.Format("Cannot handle '{0}'.", reader.TokenType));
}
}
}
else
{
// flush...
while (true)
{
if (reader.TokenType == JsonNetTokenShim.EndArray)
{
break;
}
if (!(reader.Read()))
{
throw new InvalidOperationException("End of stream encountered whilst looking for end of array.");
}
}
}
}
if (!(didPeek))
{
if (!(reader.Read()))
{
break;
}
}
}
// return...
return(dto);
}
public object ReadJson(IJsonNetReader reader, Type objectType, object existingValue, IJsonNetSerializer serializer)
{
return(this.ReadJsonInternal(reader, objectType, existingValue, serializer, 0));
}
