void HandleCaretPositionChanged(object sender, EventArgs e)
{
if (Editor.IsInAtomicUndo)
{
return;
}
CancelQuickFixTimer();
if (AnalysisOptions.EnableFancyFeatures && DocumentContext.ParsedDocument != null)
{
var token = quickFixCancellationTokenSource.Token;
var curOffset = Editor.CaretOffset;
if (HasCurrentFixes)
{
foreach (var fix in GetCurrentFixes().AllValidCodeActions)
{
if (!fix.ValidSegment.Contains(curOffset))
{
RemoveWidget();
break;
}
}
}
var loc = Editor.CaretOffset;
var ad = DocumentContext.AnalysisDocument;
if (ad == null)
{
return;
}
TextSpan span;
if (Editor.IsSomethingSelected)
{
var selectionRange = Editor.SelectionRange;
span = selectionRange.Offset >= 0 ? TextSpan.FromBounds(selectionRange.Offset, selectionRange.EndOffset) : TextSpan.FromBounds(loc, loc);
}
else
{
span = TextSpan.FromBounds(loc, loc);
}
var diagnosticsAtCaret =
Editor.GetTextSegmentMarkersAt(Editor.CaretOffset)
.OfType <IGenericTextSegmentMarker> ()
.Select(rm => rm.Tag)
.OfType <DiagnosticResult> ()
.Select(dr => dr.Diagnostic)
.ToList();
var errorList = Editor
.GetTextSegmentMarkersAt(Editor.CaretOffset)
.OfType <IErrorMarker> ()
.Where(rm => !string.IsNullOrEmpty(rm.Error.Id)).ToList();
int editorLength = Editor.Length;
smartTagTask = Task.Run(async delegate {
try {
var codeIssueFixes = new List <ValidCodeDiagnosticAction> ();
var diagnosticIds = diagnosticsAtCaret.Select(diagnostic => diagnostic.Id).Concat(errorList.Select(rm => rm.Error.Id)).ToList();
if (codeFixes == null)
{
codeFixes = (await CodeRefactoringService.GetCodeFixesAsync(DocumentContext, CodeRefactoringService.MimeTypeToLanguage(Editor.MimeType), token).ConfigureAwait(false)).ToList();
}
foreach (var cfp in codeFixes)
{
if (token.IsCancellationRequested)
{
return(CodeActionContainer.Empty);
}
var provider = cfp.GetCodeFixProvider();
if (!provider.FixableDiagnosticIds.Any(diagnosticIds.Contains))
{
continue;
}
try {
var groupedDiagnostics = diagnosticsAtCaret
.Concat(errorList.Select(em => em.Error.Tag)
.OfType <Diagnostic> ())
.GroupBy(d => d.Location.SourceSpan);
foreach (var g in groupedDiagnostics)
{
if (token.IsCancellationRequested)
{
return(CodeActionContainer.Empty);
}
var diagnosticSpan = g.Key;
var validDiagnostics = g.Where(d => provider.FixableDiagnosticIds.Contains(d.Id)).ToImmutableArray();
if (validDiagnostics.Length == 0)
{
continue;
}
await provider.RegisterCodeFixesAsync(new CodeFixContext(ad, diagnosticSpan, validDiagnostics, (ca, d) => codeIssueFixes.Add(new ValidCodeDiagnosticAction(cfp, ca, validDiagnostics, diagnosticSpan)), token));
// TODO: Is that right ? Currently it doesn't really make sense to run one code fix provider on several overlapping diagnostics at the same location
// However the generate constructor one has that case and if I run it twice the same code action is generated twice. So there is a dupe check problem there.
// Work around for now is to only take the first diagnostic batch.
break;
}
} catch (OperationCanceledException) {
return(CodeActionContainer.Empty);
} catch (AggregateException ae) {
ae.Flatten().Handle(aex => aex is OperationCanceledException);
return(CodeActionContainer.Empty);
} catch (Exception ex) {
LoggingService.LogError("Error while getting refactorings from code fix provider " + cfp.Name, ex);
continue;
}
}
var codeActions = new List <ValidCodeAction> ();
foreach (var action in await CodeRefactoringService.GetValidActionsAsync(Editor, DocumentContext, span, token).ConfigureAwait(false))
{
codeActions.Add(action);
}
var codeActionContainer = new CodeActionContainer(codeIssueFixes, codeActions, diagnosticsAtCaret);
Application.Invoke(delegate {
if (token.IsCancellationRequested)
{
return;
}
if (codeActionContainer.IsEmpty)
{
RemoveWidget();
return;
}
CreateSmartTag(codeActionContainer, loc);
});
return(codeActionContainer);
} catch (AggregateException ae) {
ae.Flatten().Handle(aex => aex is OperationCanceledException);
return(CodeActionContainer.Empty);
} catch (OperationCanceledException) {
return(CodeActionContainer.Empty);
} catch (TargetInvocationException ex) {
if (ex.InnerException is OperationCanceledException)
{
return(CodeActionContainer.Empty);
}
throw;
}
}, token);
}
else
{
RemoveWidget();
}
}
internal Task <CodeActionContainer> GetCurrentFixesAsync(CancellationToken cancellationToken)
{
var loc = Editor.CaretOffset;
var ad = DocumentContext.AnalysisDocument;
if (ad == null)
{
return(Task.FromResult(CodeActionContainer.Empty));
}
TextSpan span;
if (Editor.IsSomethingSelected)
{
var selectionRange = Editor.SelectionRange;
span = selectionRange.Offset >= 0 ? TextSpan.FromBounds(selectionRange.Offset, selectionRange.EndOffset) : TextSpan.FromBounds(loc, loc);
}
else
{
span = TextSpan.FromBounds(loc, loc);
}
var rExt = Editor.GetContent <ResultsEditorExtension> ();
var errorList = Editor
.GetTextSegmentMarkersAt(Editor.CaretOffset)
.OfType <IErrorMarker> ()
.Where(rm => !string.IsNullOrEmpty(rm.Error.Id)).ToList();
return(Task.Run(async delegate {
try {
var result = await CodeDiagnosticRunner.Check(new AnalysisDocument(Editor, DocumentContext), cancellationToken).ConfigureAwait(false);
var diagnosticsAtCaret = result.OfType <DiagnosticResult> ().Where(d => d.Region.Contains(loc)).Select(d => d.Diagnostic).ToList();
var codeIssueFixes = new List <ValidCodeDiagnosticAction> ();
var diagnosticIds = diagnosticsAtCaret.Select(diagnostic => diagnostic.Id).Concat(errorList.Select(rm => rm.Error.Id)).ToList();
if (codeFixes == null)
{
codeFixes = (await CodeRefactoringService.GetCodeFixesAsync(DocumentContext, CodeRefactoringService.MimeTypeToLanguage(Editor.MimeType), cancellationToken).ConfigureAwait(false)).ToList();
}
var root = await ad.GetSyntaxRootAsync(cancellationToken).ConfigureAwait(false);
foreach (var cfp in codeFixes)
{
if (cancellationToken.IsCancellationRequested)
{
return CodeActionContainer.Empty;
}
var provider = cfp.GetCodeFixProvider();
if (!provider.FixableDiagnosticIds.Any(diagnosticIds.Contains))
{
continue;
}
// These two delegates were factored out, as using them as lambdas in the inner loop creates more captures than declaring them here.
Func <Diagnostic, bool> providerIdsContain = d => provider.FixableDiagnosticIds.Contains(d.Id);
Action <Microsoft.CodeAnalysis.CodeActions.CodeAction, ImmutableArray <Diagnostic> > codeFixRegistration = (ca, d) => codeIssueFixes.Add(new ValidCodeDiagnosticAction(cfp, ca, d, d [0].Location.SourceSpan));
try {
var groupedDiagnostics = diagnosticsAtCaret
.Concat(errorList.Select(em => em.Error.Tag)
.OfType <Diagnostic> ())
.GroupBy(d => d.Location.SourceSpan);
foreach (var g in groupedDiagnostics)
{
if (cancellationToken.IsCancellationRequested)
{
return CodeActionContainer.Empty;
}
var diagnosticSpan = g.Key;
var validDiagnostics = g.Where(providerIdsContain).ToImmutableArray();
if (validDiagnostics.Length == 0)
{
continue;
}
if (diagnosticSpan.Start < 0 || diagnosticSpan.End > root.Span.End)
{
continue;
}
await provider.RegisterCodeFixesAsync(new CodeFixContext(ad, diagnosticSpan, validDiagnostics, codeFixRegistration, cancellationToken)).ConfigureAwait(false);
// TODO: Is that right ? Currently it doesn't really make sense to run one code fix provider on several overlapping diagnostics at the same location
// However the generate constructor one has that case and if I run it twice the same code action is generated twice. So there is a dupe check problem there.
// Work around for now is to only take the first diagnostic batch.
break;
}
} catch (OperationCanceledException) {
return CodeActionContainer.Empty;
} catch (AggregateException ae) {
ae.Flatten().Handle(aex => aex is OperationCanceledException);
return CodeActionContainer.Empty;
} catch (Exception ex) {
LoggingService.LogError("Error while getting refactorings from code fix provider " + cfp.Name, ex);
continue;
}
}
var codeActions = new List <ValidCodeAction> ();
foreach (var action in await CodeRefactoringService.GetValidActionsAsync(Editor, DocumentContext, span, cancellationToken).ConfigureAwait(false))
{
codeActions.Add(action);
}
if (cancellationToken.IsCancellationRequested)
{
return CodeActionContainer.Empty;
}
var codeActionContainer = new CodeActionContainer(codeIssueFixes, codeActions, diagnosticsAtCaret);
Application.Invoke((o, args) => {
if (cancellationToken.IsCancellationRequested)
{
return;
}
if (codeActionContainer.IsEmpty)
{
RemoveWidget();
return;
}
CreateSmartTag(codeActionContainer, loc);
});
return codeActionContainer;
} catch (AggregateException ae) {
ae.Flatten().Handle(aex => aex is OperationCanceledException);
return CodeActionContainer.Empty;
} catch (OperationCanceledException) {
return CodeActionContainer.Empty;
} catch (TargetInvocationException ex) {
if (ex.InnerException is OperationCanceledException)
{
return CodeActionContainer.Empty;
}
throw;
}
}, cancellationToken));
}
