internal static SnapshotSpan CreateSpanFromSwix(this ITextSnapshot snapshot, int swixLine, int swixColumnStart, int?swixColumnEnd)
{
int lineNumber = swixLine;
int columnStart = swixColumnStart;
int columnEnd;
if (swixColumnEnd.HasValue)
{
columnEnd = swixColumnEnd.Value;
}
else
{
// If there's no end value, we have to check for column -1 and end-of-file conditions.
bool setColumnStart = false;
if (columnStart == -1 || lineNumber >= snapshot.LineCount)
{
lineNumber = Math.Min(lineNumber - 1, snapshot.LineCount - 1);
setColumnStart = true;
}
ITextSnapshotLine line = snapshot.GetLineFromLineNumber(lineNumber);
if (setColumnStart)
{
columnStart = line.Length - 1;
}
columnEnd = line.Length;
}
return(snapshot.CreateSpan(lineNumber, columnStart, columnEnd));
}
internal static ITrackingSpan CreateTrackingSpan(this ITextSnapshot snapshot, IRangeProvider rangeProvider, SpanTrackingMode trackingMode = SpanTrackingMode.EdgeExclusive)
{
SnapshotSpan span = snapshot.CreateSpan(rangeProvider);
return(snapshot.CreateTrackingSpan(span, trackingMode));
}
internal static ITrackingSpan CreateTrackingSpan(this ITextSnapshot snapshot, CompilerMessage message, SpanTrackingMode trackingMode = SpanTrackingMode.EdgeExclusive)
{
SnapshotSpan span = snapshot.CreateSpan(message);
return(snapshot.CreateTrackingSpan(span, trackingMode));
}
internal static SnapshotSpan CreateSpan(this ITextSnapshot snapshot, IRangeProvider rangeProvider)
{
return(snapshot.CreateSpan(rangeProvider.Range));
}
internal static SnapshotSpan CreateSpan(this ITextSnapshot snapshot, CompilerMessage message)
{
return(snapshot.CreateSpan(message.Range));
}