internal static IEnumerator <ClassificationSpan> ForwardClassificationSpanEnumerator(PythonClassifier classifier, SnapshotPoint startPoint)
{
var startLine = startPoint.GetContainingLine();
int curLine = startLine.LineNumber;
if (startPoint > startLine.End)
{
// May occur if startPoint is between \r and \n
startPoint = startLine.End;
}
var tokens = classifier.GetClassificationSpans(new SnapshotSpan(startPoint, startLine.End));
for (; ;)
{
for (int i = 0; i < tokens.Count; ++i)
{
yield return(tokens[i]);
}
// indicate the line break
yield return(null);
++curLine;
if (curLine < startPoint.Snapshot.LineCount)
{
var nextLine = startPoint.Snapshot.GetLineFromLineNumber(curLine);
tokens = classifier.GetClassificationSpans(nextLine.Extent);
}
else
{
break;
}
}
}
internal static IEnumerator <ClassificationSpan> ReverseClassificationSpanEnumerator(PythonClassifier classifier, SnapshotPoint startPoint)
{
var startLine = startPoint.GetContainingLine();
int curLine = startLine.LineNumber;
var tokens = classifier.GetClassificationSpans(new SnapshotSpan(startLine.Start, startPoint));
for (; ;)
{
for (int i = tokens.Count - 1; i >= 0; i--)
{
yield return(tokens[i]);
}
// indicate the line break
yield return(null);
curLine--;
if (curLine >= 0)
{
var prevLine = startPoint.Snapshot.GetLineFromLineNumber(curLine);
tokens = classifier.GetClassificationSpans(prevLine.Extent);
}
else
{
break;
}
}
}
private static bool IsCommentChar(SnapshotPoint prevPoint, PythonClassifier classifier)
{
IList <ClassificationSpan> spans;
spans = classifier.GetClassificationSpans(new SnapshotSpan(prevPoint, 1));
if (spans.Count == 1 && spans[0].ClassificationType.IsOfType(PredefinedClassificationTypeNames.Comment))
{
return(true);
}
return(false);
}
private static bool IsCommentChar(SnapshotPoint prevPoint, PythonClassifier classifier) {
IList<ClassificationSpan> spans;
spans = classifier.GetClassificationSpans(new SnapshotSpan(prevPoint, 1));
if (spans.Count == 1 && spans[0].ClassificationType.IsOfType(PredefinedClassificationTypeNames.Comment)) {
return true;
}
return false;
}