System.Xml.Xsl.XsltOld.CopyNamespacesAction.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 (frame.Node.MoveToFirstNamespace(XPathNamespaceScope.ExcludeXml) == false) {
                        frame.Finished();
                        break;
                    }

                    frame.State   = BeginEvent;
                    goto case BeginEvent;

                case BeginEvent:
                    Debug.Assert(frame.State == BeginEvent);
                    Debug.Assert(frame.Node.NodeType == XPathNodeType.Namespace);

                    if (processor.BeginEvent(XPathNodeType.Namespace, null, frame.Node.LocalName, frame.Node.Value, false) == false) {
                        // This one wasn't output
                        break;
                    }
                    frame.State = EndEvent;
                    continue;

                case EndEvent:
                    Debug.Assert(frame.State == EndEvent);
                    Debug.Assert(frame.Node.NodeType == XPathNodeType.Namespace);

                    if (processor.EndEvent(XPathNodeType.Namespace) == false) {
                        // This one wasn't output
                        break;
                    }
                    frame.State = Advance;
                    continue;

                case Advance:
                    Debug.Assert(frame.State == Advance);
                    Debug.Assert(frame.Node.NodeType == XPathNodeType.Namespace);

                    if (frame.Node.MoveToNextNamespace(XPathNamespaceScope.ExcludeXml)) {
                        frame.State = BeginEvent;
                        continue;
                    }
                    else {
                        frame.Node.MoveToParent();
                        frame.Finished();
                        break;
                    }
                }
                break;
            }// while
        }
    }