private async Task <(HierarchyId itemid, IVsHierarchy hierarchy, IVsContainedLanguageFactory containedLanguageFactory)> GetContainedLanguageFactoryForFileAsync(string filePath)
{
await _languageServiceHost.InitializeAsync();
await _projectVsServices.ThreadingService.SwitchToUIThread();
var priority = new VSDOCUMENTPRIORITY[1];
HResult result = _projectVsServices.VsProject.IsDocumentInProject(filePath, out int isFound, priority, out uint itemid);
if (result.Failed || isFound == 0)
{
return(HierarchyId.Nil, null, null);
}
Assumes.False(itemid == HierarchyId.Nil);
IVsContainedLanguageFactory containedLanguageFactory = await _containedLanguageFactory.GetValueAsync();
if (containedLanguageFactory == null)
{
return(HierarchyId.Nil, null, null);
}
var hierarchy = (IVsHierarchy)_projectHostProvider.UnconfiguredProjectHostObject.ActiveIntellisenseProjectHostObject;
if (hierarchy == null)
{
return(HierarchyId.Nil, null, null);
}
return(itemid, hierarchy, containedLanguageFactory);
}
protected override async Task InitializeCoreAsync(CancellationToken cancellationToken)
{
await _languageServiceHost.InitializeAsync(cancellationToken).ConfigureAwait(false);
}