private static bool TryGetSupportsFeatureService(ITextBuffer buffer, out ITextBufferSupportsFeatureService service)
{
service = null;
if (buffer.TryGetWorkspace(out var workspace))
{
service = workspace.Services.GetService <ITextBufferSupportsFeatureService>();
}
return(service != null);
}
private ImmutableArray <SuggestedActionSet> GetRefactorings(
ITextBufferSupportsFeatureService supportsFeatureService,
ISuggestedActionCategorySet requestedActionCategories,
Workspace workspace,
Document document,
TextSpan?selectionOpt,
CancellationToken cancellationToken)
{
this.AssertIsForeground();
if (!selectionOpt.HasValue)
{
// this is here to fail test and see why it is failed.
Trace.WriteLine("given range is not current");
return(ImmutableArray <SuggestedActionSet> .Empty);
}
var selection = selectionOpt.Value;
if (workspace.Options.GetOption(EditorComponentOnOffOptions.CodeRefactorings) &&
_owner._codeRefactoringService != null &&
supportsFeatureService.SupportsRefactorings(_subjectBuffer) &&
requestedActionCategories.Contains(PredefinedSuggestedActionCategoryNames.Refactoring))
{
// It may seem strange that we kick off a task, but then immediately 'Wait' on
// it. However, it's deliberate. We want to make sure that the code runs on
// the background so that no one takes an accidentally dependency on running on
// the UI thread.
var refactorings = Task.Run(
() => _owner._codeRefactoringService.GetRefactoringsAsync(
document, selection, cancellationToken),
cancellationToken).WaitAndGetResult(cancellationToken);
var filteredRefactorings = FilterOnUIThread(refactorings, workspace);
return(filteredRefactorings.SelectAsArray(
r => OrganizeRefactorings(workspace, r, selection.ToSpan())));
}
return(ImmutableArray <SuggestedActionSet> .Empty);
}