private Task ProduceTagsAsync(
TaggerContext <IClassificationTag> context, DocumentSnapshotSpan snapshotSpan,
IClassificationService classificationService, ClassificationOptions options, ClassificationType type, CancellationToken cancellationToken)
{
return(ClassificationUtilities.ProduceTagsAsync(
context, snapshotSpan, classificationService, _owner._typeMap, options, type, cancellationToken));
}
protected sealed override Task ProduceTagsAsync(
TaggerContext <IClassificationTag> context, CancellationToken cancellationToken)
{
Debug.Assert(context.SpansToTag.IsSingle());
var spanToTag = context.SpansToTag.Single();
var document = spanToTag.Document;
if (document == null)
{
return(Task.CompletedTask);
}
// Attempt to get a classification service which will actually produce the results.
// If we can't (because we have no Document, or because the language doesn't support
// this service), then bail out immediately.
var classificationService = document.GetLanguageService <IClassificationService>();
if (classificationService == null)
{
return(Task.CompletedTask);
}
// The LSP client will handle producing tags when running under the LSP editor.
// Our tagger implementation should return nothing to prevent conflicts.
var workspaceContextService = document.Project.Solution.Services.GetRequiredService <IWorkspaceContextService>();
if (workspaceContextService?.IsInLspEditorContext() == true)
{
return(Task.CompletedTask);
}
// If the LSP semantic tokens feature flag is enabled, return nothing to prevent conflicts.
var isLspSemanticTokensEnabled = _globalOptions.GetOption(LspOptions.LspSemanticTokensFeatureFlag);
if (isLspSemanticTokensEnabled)
{
return(Task.CompletedTask);
}
var classificationOptions = _globalOptions.GetClassificationOptions(document.Project.Language);
return(ClassificationUtilities.ProduceTagsAsync(
context, spanToTag, classificationService, _typeMap, classificationOptions, _type, cancellationToken));
}