direction_unit
: direction_unit
| direction_unit_list direction_unit
direction_unit
$$ = direction_unit($1, NULL, &($2), NULL);
$$ = direction_unit($1, NULL, NULL, $2);
$$ = direction_unit(NULL, $1, &($2), NULL);
$$ = direction_unit(NULL, $1, NULL, $2);
$$ = direction_unit(NULL, NULL, &($2), NULL);
$$ = direction_unit(NULL, NULL, NULL, $2);
%type <obj> direction_unit
itmc_obj_t *direction_unit(itmc_ref_t *, itm_data_t *,