public IEnumerable <ITagSpan <IClassificationTag> > GetTags(NormalizedSnapshotSpanCollection spans)
{
Debug.Assert(ThemeClassificationTypeService != null);
if (ThemeClassificationTypeService == null)
{
yield break;
}
if (textClassificationType == null)
{
textClassificationType = ThemeClassificationTypeService.GetClassificationType(TextColor.Text);
}
var snapshot = spans[0].Snapshot;
foreach (var span in spans)
{
var infoPart = cachedColorsList.Find(span.Span.Start);
int offs = infoPart.DocOffsetToRelativeOffset(span.Span.Start);
int end = infoPart.DocOffsetToRelativeOffset(span.Span.End);
int index = infoPart.CachedColors.GetStartIndex(offs);
if (index < 0)
{
continue;
}
int count = infoPart.CachedColors.Count;
while (index < count)
{
var info = infoPart.CachedColors[index];
if (info.Span.Start > end)
{
break;
}
var realSpan = new Span(span.Span.Start - offs + info.Span.Start, info.Span.Length);
if (realSpan.End > snapshot.Length)
{
break;
}
var ct = info.Data as IClassificationType ?? ThemeClassificationTypeService.GetClassificationType(info.Data as TextColor? ?? TextColor.Text);
if (ct != textClassificationType)
{
yield return(new TagSpan <IClassificationTag>(new SnapshotSpan(snapshot, realSpan), new ClassificationTag(ct)));
}
index++;
}
}
}
public IEnumerable <ITagSpan <IClassificationTag> > GetTags(NormalizedSnapshotSpanCollection spans)
{
Debug.Assert(ThemeClassificationTypeService != null);
if (ThemeClassificationTypeService == null)
{
yield break;
}
var snapshot = spans[0].Snapshot;
foreach (var span in spans)
{
int offs = span.Span.Start;
int end = span.Span.End;
var infoPart = cachedColorsList.Find(offs);
while (offs < end)
{
int defaultTextLength, tokenLength;
object color;
if (!infoPart.FindByDocOffset(offs, out defaultTextLength, out color, out tokenLength))
{
yield break;
}
if (tokenLength != 0)
{
if (offs + defaultTextLength + tokenLength <= snapshot.Length)
{
var ct = color as IClassificationType ?? ThemeClassificationTypeService.GetClassificationType(color as TextColor? ?? TextColor.Text);
yield return(new TagSpan <IClassificationTag>(new SnapshotSpan(snapshot, new Span(offs + defaultTextLength, tokenLength)), new ClassificationTag(ct)));
}
}
offs += defaultTextLength + tokenLength;
}
}
}