| _::tl, [] -> (false,C.Rel ~-1)::combine tl [] (* dummy term *)
| [],_::_ -> assert false
in
- let lefts, _ = HExtlib.split_nth (min j (List.length args)) args in
+ let lefts, _ = HExtlib.split_nth "NTC 1" (min j (List.length args)) args in
List.map (fun ((b,x),i) -> b && x = C.Rel (k-i))
(HExtlib.list_mapi (fun x i -> x,i) (combine acc lefts))
| t -> U.fold (fun _ k -> k+1) k aux acc t
(let rec f = function 0 -> [] | n -> true :: f (n-1) in f j) bos
;;
-(* if n < 0, then splits all prods from an arity, returning a sort *)
-let rec split_prods ~subst context n te =
- match (n, R.whd ~subst context te) with
- | (0, _) -> context,te
- | (n, C.Sort _) when n <= 0 -> context,te
- | (n, C.Prod (name,so,ta)) ->
- split_prods ~subst ((name,(C.Decl so))::context) (n - 1) ta
- | (_, _) -> raise (AssertFailure (lazy "split_prods"))
-;;
-
let debruijn uri number_of_types context =
let rec aux k t =
match t with
| C.Appl (C.Const (Ref.Ref (_,Ref.Ind _) as ref) :: _ ) as ty ->
let args = match ty with C.Appl (_::tl) -> tl | _ -> [] in
let _, leftno, itl, _, i = E.get_checked_indtys ref in
- let left_args,_ = HExtlib.split_nth leftno args in
+ let left_args,_ = HExtlib.split_nth "NTC 2" leftno args in
let _,_,_,cl = List.nth itl i in
List.map
(fun (rel,name,ty) -> rel, name, instantiate_parameters left_args ty) cl
| C.Const (Ref.Ref (uri',Ref.Ind (true,0,_))) when NUri.eq uri' uri -> dummy
| C.Appl ((C.Const (Ref.Ref (uri',Ref.Ind (true,0,lno))))::tl)
when NUri.eq uri' uri ->
- let _, rargs = HExtlib.split_nth lno tl in
+ let _, rargs = HExtlib.split_nth "NTC 3" lno tl in
if rargs = [] then dummy else C.Appl (dummy :: rargs)
| t -> U.map (fun _ x->x) () subst_inductive_type_with_dummy t
in
let _,paramsno,tyl,_,i = E.get_checked_indtys r in
let _,name,ity,cl = List.nth tyl i in
let ok = List.length tyl = 1 in
- let params, arguments = HExtlib.split_nth paramsno tl in
+ let params, arguments = HExtlib.split_nth "NTC 4" paramsno tl in
let lifted_params = List.map (S.lift 1) params in
let cl =
List.map (fun (_,_,te) -> instantiate_parameters lifted_params te) cl
match R.whd ~subst context tycons with
| C.Const (Ref.Ref (_,Ref.Ind _)) -> C.Appl [S.lift liftno outty ; cons]
| C.Appl (C.Const (Ref.Ref (_,Ref.Ind _))::tl) ->
- let _,arguments = HExtlib.split_nth leftno tl in
+ let _,arguments = HExtlib.split_nth "NTC 5" leftno tl in
C.Appl (S.lift liftno outty::arguments@[cons])
| C.Prod (name,so,de) ->
let cons =
| t -> C.Appl [t ; C.Rel 1]
in
C.Prod (name,so, aux (liftno+1) ((name,(C.Decl so))::context) cons de)
- | _ -> raise (AssertFailure (lazy "type_of_branch"))
+ | t -> raise (AssertFailure
+ (lazy ("type_of_branch, the contructor has type: " ^ NCicPp.ppterm
+ ~metasenv:[] ~context:[] ~subst:[] t)))
in
aux 0 context cons tycons
;;
(PP.ppterm ~subst ~metasenv ~context ty)
(PP.ppterm ~subst ~metasenv ~context (C.Const r')))))
else
- try HExtlib.split_nth leftno tl
+ try HExtlib.split_nth "NTC 6" leftno tl
with
Failure _ ->
raise (TypeCheckerFailure (lazy (Printf.sprintf
=
match l with
| shift, C.Irl n ->
- let context = snd (HExtlib.split_nth shift context) in
+ let context = snd (HExtlib.split_nth "NTC 7" shift context) in
let rec compare = function
| 0,_,[] -> ()
| 0,_,_::_
compare (n,context,canonical_context)
| shift, lc_kind ->
(* we avoid useless lifting by shortening the context*)
- let l,context = (0,lc_kind), snd (HExtlib.split_nth shift context) in
+ let l,context = (0,lc_kind), snd (HExtlib.split_nth "NTC 8" shift context) in
let lifted_canonical_context =
let rec lift_metas i = function
| [] -> []
let eaten = List.length args_with_ty - res in
(C.Appl
(he::List.map fst
- (fst (HExtlib.split_nth eaten args_with_ty)))))))))
+ (fst (HExtlib.split_nth "NTC 9" eaten args_with_ty)))))))))
in
aux ty_he args_with_ty
let s = typeof ~metasenv ~subst context so in
s = C.Sort C.Prop && aux ((n,(C.Decl so))::context) de
| _ -> true in
- let context',dx = split_prods ~subst [] paramsno c in
+ let context',dx = NCicReduction.split_prods ~subst [] paramsno c in
aux context' dx
and check_mutual_inductive_defs uri ~metasenv ~subst leftno tyl =
ignore
(List.fold_right
(fun (it_relev,_,ty,cl) i ->
- let context,ty_sort = split_prods ~subst [] ~-1 ty in
- let sx_context_ty_rev,_ = HExtlib.split_nth leftno (List.rev context) in
+ let context,ty_sort = NCicReduction.split_prods ~subst [] ~-1 ty in
+ let sx_context_ty_rev,_ = HExtlib.split_nth "NTC 10" leftno (List.rev context) in
List.iter
(fun (k_relev,_,te) ->
- let _,k_relev = HExtlib.split_nth leftno k_relev in
+ let k_relev =
+ try snd (HExtlib.split_nth "NTC 11" leftno k_relev)
+ with Failure _ -> k_relev in
let te = debruijn uri len [] te in
- let context,te = split_prods ~subst tys leftno te in
+ let context,te = NCicReduction.split_prods ~subst tys leftno te in
let _,chopped_context_rev =
- HExtlib.split_nth (List.length tys) (List.rev context) in
+ HExtlib.split_nth "NTC 12" (List.length tys) (List.rev context) in
let sx_context_te_rev,_ =
- HExtlib.split_nth leftno chopped_context_rev in
+ HExtlib.split_nth "NTC 13" leftno chopped_context_rev in
(try
ignore (List.fold_left2
(fun context item1 item2 ->
let bo, context' =
eat_lambdas ~subst ~metasenv context (recno + 1 - j) bo in
let new_context_part,_ =
- HExtlib.split_nth (List.length context' - List.length context)
+ HExtlib.split_nth "NTC 14" (List.length context' - List.length context)
context' in
let k = List.fold_right shift_k new_context_part new_k in
let context, recfuns, x = k in
("Too many args for constructor: " ^ String.concat " "
(List.map (fun x-> PP.ppterm ~subst ~metasenv ~context x) args))))
in
- let _, args = HExtlib.split_nth paramsno tl in
+ let _, args = HExtlib.split_nth "NTC 15" paramsno tl in
analyse_instantiated_type rec_params args
| C.Appl ((C.Match (_,out,te,pl))::_)
| C.Match (_,out,te,pl) as t ->
let eaten = List.length args - res in
(C.Appl
(t::fst
- (HExtlib.split_nth eaten args))))))))
+ (HExtlib.split_nth "NTC 16" eaten args))))))))
in aux context ty args
;;