public FrugalList <SnapshotPoint> MapInsertionPointToSourceSnapshots(IElisionSnapshot elisionSnapshot, int exposedPosition)
{
FrugalList <SnapshotPoint> points = new FrugalList <SnapshotPoint>();
this.root.MapInsertionPointToSourceSnapshots(elisionSnapshot, exposedPosition, 0, points);
return(points);
}
private Span MapNullSpansToSourceSnapshots(IElisionSnapshot elisionSnapshot, Span span, FrugalList <SnapshotSpan> result)
{
// TODO: this is identical to projection snapshot; can it be shared?
FrugalList <SnapshotPoint> points = MapInsertionPointToSourceSnapshots(elisionSnapshot, span.Start);
for (int p = 0; p < points.Count; ++p)
{
SnapshotPoint point = points[p];
SnapshotSpan mappedSpan = new SnapshotSpan(point.Snapshot, point.Position, 0);
if (result.Count == 0 || mappedSpan != result[result.Count - 1])
{
result.Add(mappedSpan);
}
}
return(span);
}
public void MapToSourceSnapshots(IElisionSnapshot elisionSnapshot, Span span, FrugalList <SnapshotSpan> result)
{
if (span.Length == 0)
{
span = MapNullSpansToSourceSnapshots(elisionSnapshot, span, result);
}
else
{
this.root.MapToSourceSnapshots(elisionSnapshot.SourceSnapshot, span, 0, result);
}
#if DEBUG
int length = 0;
foreach (SnapshotSpan ss in result)
{
length += ss.Length;
}
Debug.Assert(length == span.Length);
#endif
}
public static IEnumerable <Tuple <ITextSnapshotLine, ITextSnapshotLine> > GetSnapshotLinesAndSourceLines(this IElisionSnapshot snapshot, ITextBuffer source)
{
return((from editLine in snapshot.Lines
let position = snapshot.MapToSourceSnapshot(editLine.Start.Position)
select new { editLine, dataLine = source.CurrentSnapshot.GetLineFromPosition(position) }).Select(x => Tuple.Create <ITextSnapshotLine, ITextSnapshotLine>(x.editLine, x.dataLine)).ToList <Tuple <ITextSnapshotLine, ITextSnapshotLine> >());
}
