private static ExtractMethodResult TryWithoutMakingValueTypesRef(
Document document, NormalizedSnapshotSpanCollection spans, ExtractMethodResult result, ExtractMethodOptions options, CancellationToken cancellationToken)
{
if (options.DontPutOutOrRefOnStruct || !result.Reasons.IsSingle())
{
return(null);
}
var reason = result.Reasons.FirstOrDefault();
var length = FeaturesResources.Asynchronous_method_cannot_have_ref_out_parameters_colon_bracket_0_bracket.IndexOf(':');
if (reason != null && length > 0 && reason.IndexOf(FeaturesResources.Asynchronous_method_cannot_have_ref_out_parameters_colon_bracket_0_bracket.Substring(0, length), 0, length, StringComparison.Ordinal) >= 0)
{
var newResult = ExtractMethodService.ExtractMethodAsync(
document,
spans.Single().Span.ToTextSpan(),
localFunction: false,
options with {
DontPutOutOrRefOnStruct = true
},
private async Task ExecuteWorkerAsync(
ITextView view,
ITextBuffer textBuffer,
TextSpan span,
IBackgroundWorkIndicatorContext waitContext)
{
_threadingContext.ThrowIfNotOnUIThread();
var cancellationToken = waitContext.UserCancellationToken;
var document = await textBuffer.CurrentSnapshot.GetFullyLoadedOpenDocumentInCurrentContextWithChangesAsync(waitContext).ConfigureAwait(false);
if (document is null)
{
return;
}
var options = await document.GetExtractMethodGenerationOptionsAsync(_globalOptions, cancellationToken).ConfigureAwait(false);
var result = await ExtractMethodService.ExtractMethodAsync(
document, span, localFunction : false, options, cancellationToken).ConfigureAwait(false);
Contract.ThrowIfNull(result);
if (!result.Succeeded && !result.SucceededWithSuggestion)
{
// if it failed due to out/ref parameter in async method, try it with different option
var newResult = await TryWithoutMakingValueTypesRefAsync(
document, span, result, options, cancellationToken).ConfigureAwait(false);
if (newResult != null)
{
var notificationService = document.Project.Solution.Workspace.Services.GetService <INotificationService>();
if (notificationService != null)
{
// We are about to show a modal UI dialog so we should take over the command execution
// wait context. That means the command system won't attempt to show its own wait dialog
// and also will take it into consideration when measuring command handling duration.
await _threadingContext.JoinableTaskFactory.SwitchToMainThreadAsync(cancellationToken);
if (!notificationService.ConfirmMessageBox(
EditorFeaturesResources.Extract_method_encountered_the_following_issues + Environment.NewLine + Environment.NewLine +
string.Join(Environment.NewLine, result.Reasons) + Environment.NewLine + Environment.NewLine +
EditorFeaturesResources.We_can_fix_the_error_by_not_making_struct_out_ref_parameter_s_Do_you_want_to_proceed,
title: EditorFeaturesResources.Extract_Method,
severity: NotificationSeverity.Error))
{
// We handled the command, displayed a notification and did not produce code.
return;
}
await TaskScheduler.Default;
}
// reset result
result = newResult;
}
else if (await TryNotifyFailureToUserAsync(document, result, cancellationToken).ConfigureAwait(false))
{
// We handled the command, displayed a notification and did not produce code.
return;
}
}
var cleanupOptions = await document.GetCodeCleanupOptionsAsync(_globalOptions, cancellationToken).ConfigureAwait(false);
var(formattedDocument, methodNameAtInvocation) = await result.GetFormattedDocumentAsync(cleanupOptions, cancellationToken).ConfigureAwait(false);
await _threadingContext.JoinableTaskFactory.SwitchToMainThreadAsync(cancellationToken);
ApplyChange_OnUIThread(formattedDocument, textBuffer, waitContext);
// start inline rename to allow the user to change the name if they want.
var textSnapshot = textBuffer.CurrentSnapshot;
document = textSnapshot.GetOpenDocumentInCurrentContextWithChanges();
if (document != null)
{
_renameService.StartInlineSession(document, methodNameAtInvocation.Span, cancellationToken);
}
// select invocation span
view.TryMoveCaretToAndEnsureVisible(new SnapshotPoint(textSnapshot, methodNameAtInvocation.Span.End));
view.SetSelection(methodNameAtInvocation.Span.ToSnapshotSpan(textSnapshot));
}
private bool Execute(
ITextBuffer textBuffer,
ITextView view,
IUIThreadOperationContext waitContext)
{
var cancellationToken = waitContext.UserCancellationToken;
var spans = view.Selection.GetSnapshotSpansOnBuffer(textBuffer);
if (spans.Count(s => s.Length > 0) != 1)
{
return(false);
}
var document = textBuffer.CurrentSnapshot.GetFullyLoadedOpenDocumentInCurrentContextWithChanges(
waitContext, _threadingContext);
if (document == null)
{
return(false);
}
var options = ExtractMethodOptions.From(document.Project);
var result = ExtractMethodService.ExtractMethodAsync(
document, spans.Single().Span.ToTextSpan(), localFunction: false, options, cancellationToken).WaitAndGetResult(cancellationToken);
Contract.ThrowIfNull(result);
if (!result.Succeeded && !result.SucceededWithSuggestion)
{
// if it failed due to out/ref parameter in async method, try it with different option
var newResult = TryWithoutMakingValueTypesRef(document, spans, result, options, cancellationToken);
if (newResult != null)
{
var notificationService = document.Project.Solution.Workspace.Services.GetService <INotificationService>();
if (notificationService != null)
{
// We are about to show a modal UI dialog so we should take over the command execution
// wait context. That means the command system won't attempt to show its own wait dialog
// and also will take it into consideration when measuring command handling duration.
waitContext.TakeOwnership();
if (!notificationService.ConfirmMessageBox(
EditorFeaturesResources.Extract_method_encountered_the_following_issues + Environment.NewLine + Environment.NewLine +
string.Join(Environment.NewLine, result.Reasons) + Environment.NewLine + Environment.NewLine +
EditorFeaturesResources.We_can_fix_the_error_by_not_making_struct_out_ref_parameter_s_Do_you_want_to_proceed,
title: EditorFeaturesResources.Extract_Method,
severity: NotificationSeverity.Error))
{
// We handled the command, displayed a notification and did not produce code.
return(true);
}
}
// reset result
result = newResult;
}
else if (TryNotifyFailureToUser(document, result, waitContext))
{
// We handled the command, displayed a notification and did not produce code.
return(true);
}
}
// apply the change to buffer
// get method name token
ApplyChangesToBuffer(result, textBuffer, cancellationToken);
// start inline rename
var methodNameAtInvocation = result.InvocationNameToken;
var snapshotAfterFormatting = textBuffer.CurrentSnapshot;
var documentAfterFormatting = snapshotAfterFormatting.GetOpenDocumentInCurrentContextWithChanges();
_renameService.StartInlineSession(documentAfterFormatting, methodNameAtInvocation.Span, cancellationToken);
// select invocation span
view.TryMoveCaretToAndEnsureVisible(new SnapshotPoint(snapshotAfterFormatting, methodNameAtInvocation.Span.End));
view.SetSelection(
methodNameAtInvocation.Span.ToSnapshotSpan(snapshotAfterFormatting));
return(true);
}