private async Task <Model> DoInBackgroundAsync(CancellationToken cancellationToken)
{
using (Logger.LogBlock(FunctionId.Completion_ModelComputer_DoInBackground, cancellationToken))
{
cancellationToken.ThrowIfCancellationRequested();
if (_completionService == null || _options == null)
{
// both completionService and options can be null if given buffer is not registered to workspace yet.
// could happen in razor more frequently
return(null);
}
// get partial solution from background thread.
_documentOpt = _text.GetDocumentWithFrozenPartialSemantics(cancellationToken);
// TODO(cyrusn): We're calling into extensions, we need to make ourselves resilient
// to the extension crashing.
var completionList = await _completionService.GetCompletionsAndSetItemDocumentAsync(
_documentOpt, _subjectBufferCaretPosition, _trigger, _roles, _options, cancellationToken).ConfigureAwait(false);
if (completionList == null)
{
return(null);
}
var suggestionMode = _useSuggestionMode || completionList.SuggestionModeItem != null;
return(Model.CreateModel(
_documentOpt,
_disconnectedBufferGraph,
completionList,
useSuggestionMode: suggestionMode,
trigger: _trigger));
}
}