public boolean removeChild(NodeInfo child) {
if (child != null && _children.remove(child)) {
((LeafInfo) child).setParentDirectly(null); // except root, all are LeafInfo
BranchInfo.fixEvaluatorRefDown(child, null);
return true;
}
return false;
}
public void appendChild(NodeInfo child) {
NodeInfo oldp = child.getParent();
if (oldp != null) oldp.removeChild(child);
_children.add(child);
((LeafInfo) child).setParentDirectly(this); // except root, all are LeafInfo
BranchInfo.fixEvaluatorRefDown(child, getEvaluatorRef());
// Use getEvaluatorRef() to force _evalr being assigned
}