public static async Task <Document> ApplyVisitors(Document document, ICodeAnalysisServices services, CancellationToken cancellationToken)
{
#if DEBUG
if (Debugger.IsAttached)
{
cancellationToken = CancellationToken.None;
}
#endif
var language = document.Project.Language;
var prepares = services.GetLanguageServices <IDocumentVisitor>(language, DocumentVisitorLayer.Prepare).ToArray();
foreach (var prepare in prepares)
{
document = await prepare.VisitAsync(document, cancellationToken);
}
var scaffolds = services.GetLanguageServices <IDocumentVisitor>(language, DocumentVisitorLayer.Scaffold).ToArray();
foreach (var scaffold in scaffolds)
{
document = await scaffold.VisitAsync(document, cancellationToken);
}
var rewriters = services.GetLanguageServices <IDocumentVisitor>(language, DocumentVisitorLayer.Rewrite).ToArray();
foreach (var rewriter in rewriters)
{
document = await rewriter.VisitAsync(document, cancellationToken);
}
var fixups = services.GetLanguageServices <IDocumentVisitor>(language, DocumentVisitorLayer.Fixup).ToArray();
foreach (var fixup in fixups)
{
document = await fixup.VisitAsync(document, cancellationToken);
}
return(document);
}
/// <summary>
/// Gets the first (or none) language service of the given type that matches the parameters.
/// See <see cref="ICodeAnalysisServices.GetLanguageServices{TService}(string, string)"/>.
/// </summary>
/// <typeparam name="TService">The language service type, which should match the <see cref="ExportLanguageServiceAttribute.ServiceType"/> registration attribute.</typeparam>
public static TService GetLanguageService <TService>(this ICodeAnalysisServices services, string language, string layer = ServiceLayer.Default)
where TService : ILanguageService
=> services.GetLanguageServices <TService>(language, layer).FirstOrDefault();
/// <summary> /// Gets the first (or none) language service that matches the given parameters. /// See <see cref="ICodeAnalysisServices.GetLanguageServices(string, string, string)"/>. /// </summary> public static ILanguageService GetLanguageService(this ICodeAnalysisServices services, string language, string serviceType, string layer = ServiceLayer.Default) => services.GetLanguageServices(language, serviceType, layer).FirstOrDefault();