CopyAction.cs

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using System.Xml.XPath;
 
namespace System.Xml.Xsl.XsltOld;
 
internal class CopyAction : ContainerAction
{
    private bool _empty;
 
    internal override void Compile(Compiler compiler)
    {
        CompileAttributes(compiler);
        if (compiler.Recurse())
        {
            CompileTemplate(compiler);
            compiler.ToParent();
        }
        if (containedActions == null)
        {
            _empty = true;
        }
    }
 
    internal override bool CompileAttribute(Compiler compiler)
    {
        string localName = compiler.Input.LocalName;
        if (Ref.Equal(localName, compiler.Atoms.UseAttributeSets))
        {
            AddAction(compiler.CreateUseAttributeSetsAction());
            return true;
        }
        return false;
    }
 
    internal override void Execute(Processor processor, ActionFrame frame)
    {
        while (processor.CanContinue)
        {
            switch (frame.State)
            {
            default:
                return;
            case 0:
                if (Processor.IsRoot(frame.Node))
                {
                    processor.PushActionFrame(frame);
                    frame.State = 8;
                    return;
                }
                if (processor.CopyBeginEvent(frame.Node, _empty))
                {
                    frame.State = 5;
                    break;
                }
                return;
            case 5:
                frame.State = 6;
                if (frame.Node.NodeType == XPathNodeType.Element)
                {
                    processor.PushActionFrame(CopyNamespacesAction.GetAction(), frame.NodeSet);
                    return;
                }
                break;
            case 6:
                if (frame.Node.NodeType == XPathNodeType.Element && !_empty)
                {
                    processor.PushActionFrame(frame);
                    frame.State = 7;
                    return;
                }
                if (processor.CopyTextEvent(frame.Node))
                {
                    frame.State = 7;
                    break;
                }
                return;
            case 7:
                if (processor.CopyEndEvent(frame.Node))
                {
                    frame.Finished();
                }
                return;
            case 8:
                frame.Finished();
                return;
            case 1:
            case 2:
            case 3:
            case 4:
                return;
            }
        }
    }
}