xpc.setCurrentExpressionNodeStack(
(IntStack) m_currentExpressionNodes.clone());
xpc.setContextNodeListsStack((Stack) m_contextNodeLists.clone());
if (m_contextNodeList != null)
xpc.pushContextNodeList((DTMIterator) m_contextNodeList.clone());
xpc.setAxesIteratorStackStacks((Stack) m_axesIteratorStack.clone());
transformer.m_currentTemplateRuleIsNull =
(BoolStack) m_currentTemplateRuleIsNull.clone();