Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / XmlUtils / System / Xml / Xsl / XsltOld / CopyNodeSetAction.cs / 1305376 / CopyNodeSetAction.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Xml.Xsl.XsltOld { using Res = System.Xml.Utils.Res; using System; using System.Diagnostics; using System.Xml; using System.Xml.XPath; internal sealed class CopyNodeSetAction : Action { private const int BeginEvent = 2; private const int Contents = 3; private const int Namespaces = 4; private const int Attributes = 5; private const int Subtree = 6; private const int EndEvent = 7; private static CopyNodeSetAction s_Action = new CopyNodeSetAction(); internal static CopyNodeSetAction 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 (frame.NextNode(processor)) { frame.State = BeginEvent; goto case BeginEvent; } else { frame.Finished(); break; } case BeginEvent: Debug.Assert(frame.State == BeginEvent); if (SendBeginEvent(processor, frame.Node) == false) { // This one wasn't output break; } frame.State = Contents; continue; case Contents: Debug.Assert(frame.State == Contents); XPathNodeType nodeType = frame.Node.NodeType; if (nodeType == XPathNodeType.Element || nodeType == XPathNodeType.Root) { processor.PushActionFrame(CopyNamespacesAction.GetAction(), frame.NodeSet); frame.State = Namespaces; break; } if (SendTextEvent(processor, frame.Node) == false) { // This one wasn't output break; } frame.State = EndEvent; continue; case Namespaces: processor.PushActionFrame(CopyAttributesAction.GetAction(), frame.NodeSet); frame.State = Attributes; break; case Attributes: if (frame.Node.HasChildren) { processor.PushActionFrame(GetAction(), frame.Node.SelectChildren(XPathNodeType.All)); frame.State = Subtree; break; } frame.State = EndEvent; goto case EndEvent; case Subtree: //frame.Node.MoveToParent(); frame.State = EndEvent; continue; case EndEvent: Debug.Assert(frame.State == EndEvent); if (SendEndEvent(processor, frame.Node) == false) { // This one wasn't output break; } frame.State = Initialized; continue; } break; } } private static bool SendBeginEvent(Processor processor, XPathNavigator node) { return processor.CopyBeginEvent(node, node.IsEmptyElement); } private static bool SendTextEvent(Processor processor, XPathNavigator node) { return processor.CopyTextEvent(node); } private static bool SendEndEvent(Processor processor, XPathNavigator node) { return processor.CopyEndEvent(node); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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