public SnapshotPoint?GetInsertionPoint(Predicate <ITextBuffer> match)
{
if (match == null)
{
throw new ArgumentNullException(nameof(match));
}
if (_unmappable)
{
return(null);
}
return(MappingHelper.MapDownToFirstMatchNoTrack(_anchor, match));
}
public NormalizedSnapshotSpanCollection GetSpans(Predicate <ITextBuffer> match)
{
if (_unmappable)
{
return(NormalizedSnapshotSpanCollection.Empty);
}
//Try mapping down first.
FrugalList <SnapshotSpan> mappedSpans = new FrugalList <SnapshotSpan>();
MappingHelper.MapDownToFirstMatchNoTrack(_anchor, match, mappedSpans);
if (mappedSpans.Count == 0)
{
//Unable to map down ... try mapping up.
this.MapUpToBufferNoTrack(match, mappedSpans);
}
return(new NormalizedSnapshotSpanCollection(mappedSpans));
}
public SnapshotPoint?GetPoint(Predicate <ITextBuffer> match, PositionAffinity affinity)
{
if (match == null)
{
throw new ArgumentNullException(nameof(match));
}
if (_unmappable)
{
return(null);
}
//Try mapping down first.
SnapshotPoint?mappedPoint = MappingHelper.MapDownToFirstMatchNoTrack(_anchor, match, affinity);
if (!mappedPoint.HasValue)
{
//Unable to map down ... try mapping up.
return(this.MapUpToFirstMatchNoTrack(match, affinity));
}
return(mappedPoint);
}