System.Xml.Xsl.XsltOld.CopyNamespacesAction.GetAction C# (CSharp) Method

        internal static CopyNamespacesAction GetAction() {
            Debug.Assert(s_Action != null);
            return s_Action;
        }

        internal override void Execute(Processor processor, ActionFrame frame)
        {
            Debug.Assert(processor != null && frame != null);

            while (processor.CanContinue)
            {
                switch (frame.State)
                {
                case Initialized:
                    if (Processor.IsRoot(frame.Node !))
                    {
                        processor.PushActionFrame(frame);
                        frame.State = ChildrenOnly;
                        break;
                    }

                    if (processor.CopyBeginEvent(frame.Node !, _empty) == false)
                    {
                        // This event wasn't processed
                        break;
                    }
                    frame.State = NamespaceCopy;

                    continue;

                case NamespaceCopy:
                    frame.State = ContentsCopy;
                    if (frame.Node !.NodeType == XPathNodeType.Element)
                    {
                        processor.PushActionFrame(CopyNamespacesAction.GetAction(), frame.NodeSet);
                        break;
                    }
                    continue;

                case ContentsCopy:
                    if (frame.Node !.NodeType == XPathNodeType.Element && !_empty)
                    {
                        //Debug.Assert(frame.Node.HasValue == false);
                        processor.PushActionFrame(frame);
                        frame.State = ProcessChildren;
                        break;
                    }
                    else
                    {
                        if (processor.CopyTextEvent(frame.Node))
                        {
                            frame.State = ProcessChildren;
                            continue;
                        }
                        else
                        {
                            // This event wasn't processed
                            break;
                        }
                    }