public void WriteNewFormat(IDataModel owner, ModelDelta token, int source, int destination, IReadOnlyList <ArrayRunElementSegment> sourceSegments)
{
owner.WritePointer(token, source, destination);
var newRun = FormatRunFactory.GetStrategy(InnerFormat).WriteNewRun(owner, token, source, destination, Name, sourceSegments);
owner.ObserveRunWritten(token, newRun.MergeAnchor(new SortedSpan <int>(source)));
}
public bool DestinationDataMatchesPointerFormat(IDataModel owner, ModelDelta token, int source, int destination, IReadOnlyList <ArrayRunElementSegment> sourceSegments, int parentIndex)
{
if (destination == Pointer.NULL)
{
return(true);
}
var run = owner.GetNextAnchor(destination);
if (run.Start < destination)
{
return(false);
}
if (run.Start > destination || (run.Start == destination && (run is NoInfoRun || run is PointerRun)))
{
// hard case: no format found, so check the data
if (destination < 0 || destination >= owner.Count)
{
return(false);
}
return(FormatRunFactory.GetStrategy(InnerFormat)?.TryAddFormatAtDestination(owner, token, source, destination, Name, sourceSegments, parentIndex) ?? false);
}
else
{
// easy case: already have a format, just see if it matches
var strategy = FormatRunFactory.GetStrategy(InnerFormat);
if (strategy == null)
{
return(false);
}
if (strategy.Matches(run))
{
return(true);
}
// special test: the format of the data is wrong?
return(strategy.TryAddFormatAtDestination(owner, token, source, destination, Name, sourceSegments, parentIndex));
}
}