public override void Commit()
{
var completion = CurrentCompletion.Completion as RoslynCompletion;
if (completion == null)
{
base.Commit();
return;
}
var info = CompletionInfo.Create(ApplicableTo.TextBuffer.CurrentSnapshot);
Debug.Assert(info != null);
if (info == null)
{
return;
}
var change = completionService.GetChangeAsync(info.Value.Document, completion.CompletionItem, commitCharacter: null).GetAwaiter().GetResult();
var buffer = ApplicableTo.TextBuffer;
var currentSnapshot = buffer.CurrentSnapshot;
using (var ed = buffer.CreateEdit()) {
foreach (var c in change.TextChanges)
{
Debug.Assert(c.Span.End <= originalSnapshot.Length);
if (c.Span.End > originalSnapshot.Length)
{
return;
}
var span = new SnapshotSpan(originalSnapshot, c.Span.ToSpan()).TranslateTo(currentSnapshot, SpanTrackingMode.EdgeInclusive);
if (!ed.Replace(span.Span, c.NewText))
{
return;
}
}
ed.Apply();
}
if (change.NewPosition != null)
{
var snapshot = buffer.CurrentSnapshot;
Debug.Assert(change.NewPosition.Value <= snapshot.Length);
if (change.NewPosition.Value <= snapshot.Length)
{
textView.Caret.MoveTo(new SnapshotPoint(snapshot, change.NewPosition.Value));
textView.Caret.EnsureVisible();
}
}
}
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;