int
tree_ruleHead_third(FullHist* treeh)
{
Val* specTree = NULL;
if(Feature::isLM) specTree = tree_ruleTree(treeh, 2);
if(specTree)
{
FullHist* pt = treeh->back;
if(!pt) return nullWordInt;
int ans = pt->hd->toInt();
return ans;
}
Val* trdtree = tree_ruleTree(treeh,3);
if(!trdtree) return nullWordInt;
else return trdtree->wrd();
}
int
fh_parent_head(FullHist* tree)
{
Val* spectree = NULL;
if(Feature::isLM) spectree = tree_ruleTree(tree, 2);
if(spectree)
{
//cerr << "found st " << endl;
return spectree->wrd();
}
FullHist* pt = tree->back;
if(!pt) return nullWordInt;
int ans = pt->hd->toInt();
assert(ans >= -1);
return ans;
}