772                                    size_t level) {  in construct_subset()  argument
773   if (level >= kMaxLemmaSize || item_end <= item_start)  in construct_subset()
782   uint16 spl_idx_node = lma_last_start->spl_idx_arr[level];  in construct_subset()
787     uint16 spl_idx_current = lma_current->spl_idx_arr[level];  in construct_subset()
799   assert(level < kMaxLemmaSize);  in construct_subset()
800   if (parent_son_num > max_sonbuf_len_[level])  in construct_subset()
801     max_sonbuf_len_[level] = parent_son_num;  in construct_subset()
803   total_son_num_[level] += parent_son_num;  in construct_subset()
804   total_sonbuf_num_[level] += 1;  in construct_subset()
817   if (0 == level) {                 // the parent is root  in construct_subset()
826   } else if (1 == level) {  // the parent is a son of root  in construct_subset()
850   spl_idx_node = lma_last_start->spl_idx_arr[level];  in construct_subset()
853   if (lma_last_start->spl_idx_arr[level + 1] == 0)  in construct_subset()
860     uint16 spl_idx_current = lma_current->spl_idx_arr[level];  in construct_subset()
863       if (lma_current->spl_idx_arr[level + 1] == 0)  in construct_subset()
869       if (0 == level) {  in construct_subset()
888         if (0 == level) {  in construct_subset()
901         if (homo_num > max_homobuf_len_[level])  in construct_subset()
902           max_homobuf_len_[level] = homo_num;  in construct_subset()
904         total_homo_num_[level] += homo_num;  in construct_subset()
910         if (0 == level)  in construct_subset()
915                          item_start_next + homo_num, i, level + 1);  in construct_subset()
918         total_node_hasson_[level] += 1;  in construct_subset()
928       if (lma_current->spl_idx_arr[level + 1] == 0)  in construct_subset()
938   if (0 == level) {  in construct_subset()
957     if (0 == level) {  in construct_subset()
970     if (homo_num > max_homobuf_len_[level])  in construct_subset()
971       max_homobuf_len_[level] = homo_num;  in construct_subset()
973     total_homo_num_[level] += homo_num;  in construct_subset()
979     if (0 == level)  in construct_subset()
984                      item_start_next + homo_num, item_end, level + 1);  in construct_subset()
987     total_node_hasson_[level] += 1;  in construct_subset()
994     total_sonbuf_allnoson_[level] += 1;  in construct_subset()
995     total_node_in_sonbuf_allnoson_[level] += parent_son_num;  in construct_subset()