System.Xml.Xsl.XsltOld.CopyAction.Execute C# (CSharp) Method

        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, this.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 && !this.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;
                        }
                    }

                case ProcessChildren:
                    if (processor.CopyEndEvent(frame.Node)) {
                        frame.Finished();
                    }
                    break;

                case ChildrenOnly:
                    frame.Finished();
                    break;

                default:
                    Debug.Fail("Invalid CopyAction execution state");
			        break;
                }

                break;
            }
        }
    }