CopyNodeSetAction.cs

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using System.Xml.XPath;
 
namespace System.Xml.Xsl.XsltOld;
 
internal sealed class CopyNodeSetAction : Action
{
    private static readonly CopyNodeSetAction s_Action = new CopyNodeSetAction();
 
    internal static CopyNodeSetAction GetAction()
    {
        return s_Action;
    }
 
    internal override void Execute(Processor processor, ActionFrame frame)
    {
        while (processor.CanContinue)
        {
            switch (frame.State)
            {
            default:
                return;
            case 0:
                if (frame.NextNode(processor))
                {
                    frame.State = 2;
                    goto case 2;
                }
                frame.Finished();
                return;
            case 2:
                if (SendBeginEvent(processor, frame.Node))
                {
                    frame.State = 3;
                    continue;
                }
                return;
            case 3:
            {
                XPathNodeType nodeType = frame.Node.NodeType;
                if (nodeType == XPathNodeType.Element || nodeType == XPathNodeType.Root)
                {
                    processor.PushActionFrame(CopyNamespacesAction.GetAction(), frame.NodeSet);
                    frame.State = 4;
                }
                else if (SendTextEvent(processor, frame.Node))
                {
                    frame.State = 7;
                    continue;
                }
                return;
            }
            case 4:
                processor.PushActionFrame(CopyAttributesAction.GetAction(), frame.NodeSet);
                frame.State = 5;
                return;
            case 5:
                if (frame.Node.HasChildren)
                {
                    processor.PushActionFrame(GetAction(), frame.Node.SelectChildren(XPathNodeType.All));
                    frame.State = 6;
                    return;
                }
                frame.State = 7;
                break;
            case 6:
                frame.State = 7;
                continue;
            case 7:
                break;
            case 1:
                return;
            }
            if (SendEndEvent(processor, frame.Node))
            {
                frame.State = 0;
                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);
    }
}