internal override void Execute(Processor processor, ActionFrame frame) {
Debug.Assert(processor != null && frame != null);
switch (frame.State) {
case Initialized:
frame.AllocateVariables(variableCount);
XPathNavigator root = processor.Document.Clone();
root.MoveToRoot();
frame.InitNodeSet(new XPathSingletonIterator(root));
if (this.containedActions != null && this.containedActions.Count > 0) {
processor.PushActionFrame(frame);
}
frame.State = QueryInitialized;
break;
case QueryInitialized:
Debug.Assert(frame.State == QueryInitialized);
frame.NextNode(processor);
Debug.Assert(Processor.IsRoot(frame.Node));
if (processor.Debugger != null) {
// this is like apply-templates, but we don't have it on stack.
// Pop the stack, otherwise last instruction will be on it.
processor.PopDebuggerStack();
}
processor.PushTemplateLookup(frame.NodeSet, /*mode:*/null, /*importsOf:*/null);
frame.State = RootProcessed;
break;
case RootProcessed:
Debug.Assert(frame.State == RootProcessed);
frame.Finished();
break;
default:
Debug.Fail("Invalid RootAction execution state");
break;
}
}
}