+// a snap_type of "index" computes position, else use snap_len metadata
+int compute_snap_len(qp_node *fs, table_list *schema, string snap_type);
+
+std::string generate_watchlist_element_name(std::string node_name);
+std::string generate_watchlist_struct_name(std::string node_name);
+std::string generate_watchlist_name(std::string node_name);
+