// returns the brace pair when the point is already a brace
public Tuple <BracePos, BracePos> GetBracePair(SnapshotPoint point)
{
if (point.Snapshot != this.Snapshot || point.Position >= Snapshot.Length)
{
return(null);
}
this.EnsureLinesInPreferredSpan(point.SpanUntil());
int index = FindIndexOfBraceAtOrAfter(point.Position);
if (index < 0)
{
return(null);
}
BracePos one = this.braces[index];
if (one.Position != point.Position)
{
return(null);
}
if (IsOpeningBrace(one.Brace))
{
return(GetBracePairFromPosition(point, RainbowHighlightMode.TrackNextScope));
}
else
{
return(GetBracePairFromPosition(point, RainbowHighlightMode.TrackInsertionPoint));
}
}
// TODO: Avoid use of SnapshotPoint
public Tuple <BracePos, BracePos> GetBracePairFromPosition(SnapshotPoint point, RainbowHighlightMode mode)
{
if (point.Snapshot != this.Snapshot || point.Position >= Snapshot.Length)
{
return(null);
}
var span = point.SpanUntil();
this.EnsureLinesInPreferredSpan(new TextSpan(span.Start, span.Length));
int openIndex = -1;
BracePos?opening = null;
if (mode == RainbowHighlightMode.TrackInsertionPoint)
{
opening = FindClosestOpeningBrace(point.Position, out openIndex);
}
else
{
opening = CheckForBraceAtPositionOrClosestOpeningBrace(point.Position, out openIndex);
}
if (opening == null)
{
return(null);
}
for (int i = openIndex + 1; i < this.braces.Count; i++)
{
if (i == this.braces.Count - 1)
{
// continue parsing the document if necessary
this.ContinueParsing(this.LastParsedPosition, this.Snapshot.Length);
}
BracePos closing = this.braces[i];
if (this.IsOpeningBrace(closing.Brace))
{
continue;
}
if (this.braceList[opening.Value.Brace] == closing.Brace &&
closing.Depth == opening.Value.Depth)
{
return(new Tuple <BracePos, BracePos>(opening.Value, closing));
}
}
return(null);
}
