let string_of_var l x =
try
List.nth l x
- with Failure "nth" -> "`" ^ string_of_int x
+ with Failure _ -> "`" ^ string_of_int x
;;
let string_of_term p t = print ~l:p.var_names (t :> nf);;
let rec aux = function
| `N _ -> 0
| `Var(_,ar) -> if ar = min_int then 0 else max 0 ar (*assert (ar >= 0); ar*)
- | `Lam(_,t) -> aux t
+ | `Lam(_,t,g) -> assert (g = []); aux t
| `I(v,args) -> aux (`Var v) + aux_many (Listx.to_list args :> nf list)
| `Match(u,(_,ar),_,_,args) -> aux (u :> nf) + (if ar <= 0 then 0 else ar - 1) + aux_many args
and aux_many tms = List.fold_right ((+) ++ aux) tms 0 in
let rec aux = function
| `N _ -> 0
| `Var(_,ar) -> if ar = min_int then 1 else 0
- | `Lam(_,t) -> aux t
+ | `Lam(_,t,g) -> assert (g = []); aux t
| `I(v,args) -> aux (`Var v) + aux_many (Listx.to_list args)
| `Match(u,v,_,_,args) -> aux (u :> nf) + aux (`Var v) + aux_many args
and aux_many tms = List.fold_right ((+) ++ aux) tms 0 in
let simple_expand_match ps =
let rec aux level = function
| #i_num_var as t -> (aux_i_num_var level t :> nf)
- | `Lam(b,t) -> `Lam(b,aux (level+1) t)
+ | `Lam(b,t,g) -> assert (g = []); `Lam(b,aux (level+1) t,[])
and aux_i_num_var level = function
| `Match(u,v,bs_lift,bs,args) as torig ->
let (u : i_num_var) = aux_i_num_var level u in
let args = Listx.from_list (vars :> nf list) in
let bs = ref [] in
(* 666, since it will be replaced anyway during subst: *)
- let inst = `Lam(false,`Match(`I((0,min_int),Listx.map (lift 1) args),(x,-666),1,bs,[])) in
+ let inst = `Lam(false,`Match(`I((0,min_int),Listx.map (lift 1) args),(x,-666),1,bs,[]),[]) in
let p = {p with deltas=bs::p.deltas} in
subst_in_problem x inst p
;;
let compute_special_k tms =
let rec aux k (t: nf) = Pervasives.max k (match t with
- | `Lam(b,t) -> aux (k + if b then 1 else 0) t
+ | `Lam(b,t,g) -> assert (g = []); aux (k + if b then 1 else 0) t
| `I(n, tms) -> Listx.max (Listx.map (aux 0) tms)
| `Match(t, _, liftno, bs, args) ->
List.fold_left max 0 (List.map (aux 0) ((t :> nf)::args@List.map snd !bs))
| `Var _ -> 0
) in
let rec aux' top t = match t with
- | `Lam(_,t) -> aux' false t
+ | `Lam(_,t,g) -> assert (g = []); aux' false t
| `I((_,ar), tms) -> max ar
(Listx.max (Listx.map (aux' false) (tms :> nf Listx.listx)))
| `Match(t, _, liftno, bs, args) ->
| `N n -> `N (List.nth perm n)
| `I _ -> assert false
| `Var _ as t -> t
- | `Lam(v,t) -> `Lam(v, aux t)
+ | `Lam(v,t,g) -> assert (g = []); `Lam(v, aux t,[])
| `Match(_,_,_,bs,_) as t -> (bs := List.map (fun (n,t) -> (List.nth perm n, t)) !bs); t
in List.map (fun (n,t) -> (n,aux t))
in
[ ref (Array.to_list (Array.init (List.length ps) (fun i -> i, dummy))) ] in
{freshno; div; conv; ps; sigma=[]; deltas; initialSpecialK; var_names; label}
;;
+
+(* assert_depends solves the problem, and checks if the result was expected *)
+let assert_depends x =
+ let c = String.sub (label_of_problem x) 0 1 in
+ match solve x with
+ | `Unseparable s when c = "!" ->
+ failwith ("assert_depends: unseparable because: " ^ s ^ ".")
+ | `Separable _ when c = "?" ->
+ failwith ("assert_depends: separable.")
+ | _ -> () in
+Problems.main (assert_depends ++ problem_of);