private void ProcessOutliningSpans(
TaggerContext <IOutliningRegionTag> context, SnapshotSpan snapshotSpan, IOutliningService outliningService, IList <OutliningSpan> regions)
{
if (regions != null)
{
var snapshot = snapshotSpan.Snapshot;
regions = GetMultiLineRegions(outliningService, regions, snapshot);
// Create the outlining tags.
var tagSpans =
from region in regions
let spanToCollapse = new SnapshotSpan(snapshot, region.TextSpan.ToSpan())
let hintSpan = new SnapshotSpan(snapshot, region.HintSpan.ToSpan())
let tag = new Tag(snapshot.TextBuffer,
region.BannerText,
hintSpan,
region.AutoCollapse,
region.IsDefaultCollapsed,
_textEditorFactoryService,
_projectionBufferFactoryService,
_editorOptionsFactoryService)
select new TagSpan <IOutliningRegionTag>(spanToCollapse, tag);
foreach (var tagSpan in tagSpans)
{
context.AddTag(tagSpan);
}
}
}
public NQueryOutliningTagger(Workspace workspace, IOutliningService outliningService)
{
_workspace = workspace;
_outliningService = outliningService;
_workspace.CurrentDocumentChanged += WorkspaceOnCurrentDocumentChanged;
InvalidateTags();
}
public InvalidOutliningRegionException(IOutliningService service, ITextSnapshot snapshot, Span snapshotSpan, Span regionSpan)
: base(GetExceptionMessage(service, snapshot, snapshotSpan, regionSpan))
{
_service = service;
_snapshot = snapshot;
_snapshotSpan = snapshotSpan;
_regionSpan = regionSpan;
}
public InvalidOutliningRegionException(IOutliningService service, ITextSnapshot snapshot, Span snapshotSpan, Span regionSpan)
: base(GetExceptionMessage(service, snapshot, snapshotSpan, regionSpan))
{
_service = service;
_snapshot = snapshot;
_snapshotSpan = snapshotSpan;
_regionSpan = regionSpan;
}
private IList <OutliningSpan> GetMultiLineRegions(IOutliningService service, IList <OutliningSpan> regions, ITextSnapshot snapshot)
{
// Remove any spans that aren't multiline.
var multiLineRegions = new List <OutliningSpan>(regions.Count);
foreach (var region in regions)
{
if (region != null && region.TextSpan.Length > 0)
{
// Check if any clients produced an invalid OutliningSpan. If so, filter them
// out and report a non-fatal watson so we can attempt to determine the source
// of the issue.
var snapshotSpan = snapshot.GetFullSpan().Span;
var regionSpan = region.TextSpan.ToSpan();
if (!snapshotSpan.Contains(regionSpan))
{
if (!exceptionReported)
{
exceptionReported = true;
try
{
throw new InvalidOutliningRegionException(service, snapshot, snapshotSpan, regionSpan);
}
catch (InvalidOutliningRegionException e) when(FatalError.ReportWithoutCrash(e))
{
}
}
continue;
}
var startLine = snapshot.GetLineNumberFromPosition(region.TextSpan.Start);
var endLine = snapshot.GetLineNumberFromPosition(region.TextSpan.End);
if (startLine != endLine)
{
multiLineRegions.Add(region);
}
}
}
return(multiLineRegions);
}
private static string GetExceptionMessage(IOutliningService service, ITextSnapshot snapshot, Span snapshotSpan, Span regionSpan)
{
return $"OutliningService({service.GetType()}) produced an invalid region. ITextSnapshot span is {snapshotSpan}. OutliningSpan is {regionSpan}.";
}
private static string GetExceptionMessage(IOutliningService service, ITextSnapshot snapshot, Span snapshotSpan, Span regionSpan)
{
return($"OutliningService({service.GetType()}) produced an invalid region. ITextSnapshot span is {snapshotSpan}. OutliningSpan is {regionSpan}.");
}
