public void Update_Delete()
{
// Arrange
var textBuffer = new TestTextBuffer(new StringTextSnapshot("Hello World"));
var delete = new VisualStudioTextChange(6, 5, string.Empty);
var document = new CSharpVirtualDocument(Uri, textBuffer);
// Act
document.Update(new[] { delete }, hostDocumentVersion: 1);
// Assert
var text = textBuffer.CurrentSnapshot.GetText();
Assert.Equal("Hello ", text);
}
public void Update_Replace()
{
// Arrange
var textBuffer = new TestTextBuffer(new StringTextSnapshot("original"));
var replace = new VisualStudioTextChange(0, textBuffer.CurrentSnapshot.Length, "replaced text");
var document = new CSharpVirtualDocument(Uri, textBuffer);
// Act
document.Update(new[] { replace }, hostDocumentVersion: 1);
// Assert
var text = textBuffer.CurrentSnapshot.GetText();
Assert.Equal(replace.NewText, text);
}
public void Update_Insert()
{
// Arrange
var insert = new VisualStudioTextChange(0, 0, "inserted text");
var textBuffer = new TestTextBuffer(StringTextSnapshot.Empty);
var document = new CSharpVirtualDocument(Uri, textBuffer);
// Act
document.Update(new[] { insert }, hostDocumentVersion: 1);
// Assert
var text = textBuffer.CurrentSnapshot.GetText();
Assert.Equal(insert.NewText, text);
}
public void Update_MultipleEdits()
{
// Arrange
var textBuffer = new TestTextBuffer(new StringTextSnapshot("Hello World"));
var replace = new VisualStudioTextChange(6, 5, "Replaced");
var delete = new VisualStudioTextChange(0, 6, string.Empty);
var document = new HtmlVirtualDocument(Uri, textBuffer);
// Act
document.Update(new[] { replace, delete }, hostDocumentVersion: 1);
// Assert
var text = textBuffer.CurrentSnapshot.GetText();
Assert.Equal("Replaced", text);
}
internal async Task <(bool, SumType <CompletionItem[], CompletionList>?)> TryGetProvisionalCompletionsAsync(CompletionParams request, LSPDocumentSnapshot documentSnapshot, ProjectionResult projection, CancellationToken cancellationToken)
{
SumType <CompletionItem[], CompletionList>?result = null;
if (projection.LanguageKind != RazorLanguageKind.Html ||
request.Context.TriggerKind != CompletionTriggerKind.TriggerCharacter ||
request.Context.TriggerCharacter != ".")
{
return(false, result);
}
if (projection.Position.Character == 0)
{
// We're at the start of line. Can't have provisional completions here.
return(false, result);
}
var previousCharacterPosition = new Position(projection.Position.Line, projection.Position.Character - 1);
var previousCharacterProjection = await _projectionProvider.GetProjectionAsync(documentSnapshot, previousCharacterPosition, cancellationToken).ConfigureAwait(false);
if (previousCharacterProjection == null || previousCharacterProjection.LanguageKind != RazorLanguageKind.CSharp)
{
return(false, result);
}
if (!(_documentManager is TrackingLSPDocumentManager trackingDocumentManager))
{
return(false, result);
}
// Edit the CSharp projected document to contain a '.'. This allows C# completion to provide valid
// completion items for moments when a user has typed a '.' that's typically interpreted as Html.
var addProvisionalDot = new VisualStudioTextChange(previousCharacterProjection.PositionIndex, 0, ".");
await _joinableTaskFactory.SwitchToMainThreadAsync();
trackingDocumentManager.UpdateVirtualDocument <CSharpVirtualDocument>(documentSnapshot.Uri, new[] { addProvisionalDot }, previousCharacterProjection.HostDocumentVersion);
var provisionalCompletionParams = new CompletionParams()
{
Context = request.Context,
Position = new Position(previousCharacterProjection.Position.Line, previousCharacterProjection.Position.Character + 1),
TextDocument = new TextDocumentIdentifier()
{
Uri = previousCharacterProjection.Uri
}
};
result = await _requestInvoker.ReinvokeRequestOnServerAsync <CompletionParams, SumType <CompletionItem[], CompletionList>?>(
Methods.TextDocumentCompletionName,
RazorLSPConstants.CSharpContentTypeName,
provisionalCompletionParams,
cancellationToken).ConfigureAwait(true);
// We have now obtained the necessary completion items. We no longer need the provisional change. Revert.
var removeProvisionalDot = new VisualStudioTextChange(previousCharacterProjection.PositionIndex, 1, string.Empty);
trackingDocumentManager.UpdateVirtualDocument <CSharpVirtualDocument>(documentSnapshot.Uri, new[] { removeProvisionalDot }, previousCharacterProjection.HostDocumentVersion);
return(true, result);
}
