public void AugmentCompletionSession(ICompletionSession session, IList<CompletionCollection> completionCollections) {
var snapshot = session.TextView.TextSnapshot;
var triggerPoint = session.GetTriggerPoint(snapshot);
if (triggerPoint == null)
return;
var info = CompletionInfo.Create(snapshot);
if (info == null)
return;
CompletionTrigger completionTrigger;
session.Properties.TryGetProperty(typeof(CompletionTrigger), out completionTrigger);
var completionList = info.Value.CompletionService.GetCompletionsAsync(info.Value.Document, triggerPoint.Value.Position, completionTrigger).GetAwaiter().GetResult();
if (completionList == null)
return;
Debug.Assert(completionList.DefaultSpan.End <= snapshot.Length);
if (completionList.DefaultSpan.End > snapshot.Length)
return;
var trackingSpan = snapshot.CreateTrackingSpan(completionList.DefaultSpan.Start, completionList.DefaultSpan.Length, SpanTrackingMode.EdgeInclusive, TrackingFidelityMode.Forward);
var completionCollection = RoslynCompletionCollection.Create(completionList, info.Value.CompletionService, session.TextView, trackingSpan);
completionCollections.Add(completionCollection);
}
bool TryStartSession(char c, bool isDelete)
{
if (HasSession)
{
return(false);
}
var info = CompletionInfo.Create(textView.TextSnapshot);
if (info == null)
{
return(false);
}
int pos = textView.Caret.Position.BufferPosition.Position;
var completionTrigger = isDelete ? CompletionTrigger.CreateDeletionTrigger(c) : CompletionTrigger.CreateInsertionTrigger(c);
if (!info.Value.CompletionService.ShouldTriggerCompletion(info.Value.SourceText, pos, completionTrigger))
{
return(false);
}
StartSession(info, completionTrigger);
return(HasSession);
}
CompletionService TryGetRoslynCompletionService() => CompletionInfo.Create(textView.TextSnapshot)?.CompletionService;