typedef boost::variant<macro,module> ref_var;

macro* nDB::create_macro(char* myName) {
   macro* tmp_macro = new macro;
   tmp_macro->set_name(myName);
   if (_BREF->insert(std::make_pair(myName,*tmp_macro)).second) {
      printf("Insert macro %s OK!\n",myName);
   } else {
      printf("Could not insert macro %s into database!\n",myName);
   }
   return (tmp_macro);
}

ref_var* nDB::lookup_ref(char* myName) {
   boost::unordered_map<char*,ref_var,myhash,cmp_str>::iterator _ITER;
   if ((_ITER = _BREF->find(myName)) == _BREF->end()) {
      printf("ERROR::  Could not find macro %s in database \n",myName);
      exit(0);
   } else {
      _ITER = _BREF->find(myName);
      printf("Ref %s is found\n",myName);
   }
   ref_var* ref = new ref_var;
   *ref = (_ITER->second);
   macro *mac = boost::get<macro>(ref);

   printf("Macro class is %s\n",mac->get_class());

   return(ref);
}