CopyNamespacesAction.cs

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using System.Xml.XPath;
 
namespace System.Xml.Xsl.XsltOld;
 
internal sealed class CopyNamespacesAction : Action
{
    private static readonly CopyNamespacesAction s_Action = new CopyNamespacesAction();
 
    internal static CopyNamespacesAction GetAction()
    {
        return s_Action;
    }
 
    internal override void Execute(Processor processor, ActionFrame frame)
    {
        while (processor.CanContinue)
        {
            switch (frame.State)
            {
            default:
                return;
            case 0:
                if (!frame.Node.MoveToFirstNamespace(XPathNamespaceScope.ExcludeXml))
                {
                    frame.Finished();
                    return;
                }
                frame.State = 2;
                goto case 2;
            case 2:
                if (processor.BeginEvent(XPathNodeType.Namespace, null, frame.Node.LocalName, frame.Node.Value, empty: false))
                {
                    frame.State = 4;
                    break;
                }
                return;
            case 4:
                if (processor.EndEvent(XPathNodeType.Namespace))
                {
                    frame.State = 5;
                    break;
                }
                return;
            case 5:
                if (frame.Node.MoveToNextNamespace(XPathNamespaceScope.ExcludeXml))
                {
                    frame.State = 2;
                    break;
                }
                frame.Node.MoveToParent();
                frame.Finished();
                return;
            case 1:
            case 3:
                return;
            }
        }
    }
}