(TypeCheckerFailure (lazy ("Malformed inductive constructor type " ^
(UriManager.string_of_uri uri))))
-(* Main function to checks the correctness of a mutual *)
-(* inductive block definition. This is the function *)
-(* exported to the proof-engine. *)
-and typecheck_mutual_inductive_defs ~logger uri (itl,_,indparamsno) ugraph =
- let module U = UriManager in
- (* let's check if the arity of the inductive types are well *)
- (* formed *)
- let ugrap1 = List.fold_left
- (fun ugraph (_,_,x,_) -> let _,ugraph' =
- type_of ~logger x ugraph in ugraph')
- ugraph itl in
-
- (* let's check if the types of the inductive constructors *)
- (* are well formed. *)
- (* In order not to use type_of_aux we put the types of the *)
- (* mutual inductive types at the head of the types of the *)
- (* constructors using Prods *)
- let len = List.length itl in
- let tys =
- List.map (fun (n,_,ty,_) -> Some (Cic.Name n,(Cic.Decl ty))) itl in
- let _,ugraph2 =
- List.fold_right
- (fun (_,_,_,cl) (i,ugraph) ->
- let ugraph'' =
- List.fold_left
- (fun ugraph (name,te) ->
- let debruijnedte = debruijn uri len te in
- let augmented_term =
- List.fold_right
- (fun (name,_,ty,_) i -> Cic.Prod (Cic.Name name, ty, i))
- itl debruijnedte
- in
- let _,ugraph' = type_of ~logger augmented_term ugraph in
- (* let's check also the positivity conditions *)
- if
- not
- (are_all_occurrences_positive tys uri indparamsno i 0 len
- debruijnedte)
- then
- begin
- prerr_endline (UriManager.string_of_uri uri);
- prerr_endline (string_of_int (List.length tys));
- raise
- (TypeCheckerFailure
- (lazy ("Non positive occurence in " ^ U.string_of_uri uri))) end
- else
- ugraph'
- ) ugraph cl in
- (i + 1),ugraph''
- ) itl (1,ugrap1)
- in
- ugraph2
-
-(* Main function to checks the correctness of a mutual *)
-(* inductive block definition. *)
-and check_mutual_inductive_defs uri obj ugraph =
- match obj with
- Cic.InductiveDefinition (itl, params, indparamsno, _) ->
- typecheck_mutual_inductive_defs uri (itl,params,indparamsno) ugraph
- | _ ->
- raise (TypeCheckerFailure (
- lazy ("Unknown mutual inductive definition:" ^
- UriManager.string_of_uri uri)))
-
(* the boolean h means already protected *)
(* args is the list of arguments the type of the constructor that may be *)
(* found in head position must be applied to. *)
(NCicPp.ppterm ~subst ~metasenv ~context t2))))
;;
-let eat_prods ~subst ~metasenv context ty_he args_with_ty =
+let eat_prods ~subst ~metasenv context he ty_he args_with_ty =
let rec aux ty_he = function
| [] -> ty_he
| (arg, ty_arg)::tl ->
- (match R.whd ~subst context ty_he with
+ match R.whd ~subst context ty_he with
| C.Prod (n,s,t) ->
(*
- prerr_endline (NCicPp.ppterm ~context s ^ " - Vs - " ^ NCicPp.ppterm
+ prerr_endline (NCicPp.ppterm ~subst ~metasenv ~context s ^ " - Vs - "
+ ^ NCicPp.ppterm ~subst ~metasenv
~context ty_arg);
- prerr_endline (NCicPp.ppterm ~context (S.subst ~avoid_beta_redexes:true arg t));
+ prerr_endline (NCicPp.ppterm ~subst ~metasenv ~context (S.subst ~avoid_beta_redexes:true arg t));
*)
if R.are_convertible ~subst ~metasenv context ty_arg s then
aux (S.subst ~avoid_beta_redexes:true arg t) tl
raise
(TypeCheckerFailure
(lazy (Printf.sprintf
- ("Appl: wrong parameter-type, expected %s, found %s")
- (NCicPp.ppterm ~subst ~metasenv ~context ty_arg)
+ ("Appl: wrong application of %s: the parameter %s has type"^^
+ "\n%s\nbut is should have type \n%s\n")
+ (NCicPp.ppterm ~subst ~metasenv ~context he)
+ (NCicPp.ppterm ~subst ~metasenv ~context arg)
+ (NCicPp.ppterm ~subst ~metasenv ~context ty_arg)
(NCicPp.ppterm ~subst ~metasenv ~context s))))
| _ ->
raise
(TypeCheckerFailure
- (lazy "Appl: this is not a function, it cannot be applied")))
+ (lazy (Printf.sprintf
+ "Appl: %s is not a function, it cannot be applied"
+ (NCicPp.ppterm ~subst ~metasenv ~context
+ (let res = List.length tl in
+ let eaten = List.length args_with_ty - res in
+ (NCic.Appl
+ (he::List.map fst
+ (fst (HExtlib.split_nth eaten args_with_ty)))))))))
in
aux ty_he args_with_ty
;;
C.Prod (n,s,ty)
| C.LetIn (n,ty,t,bo) ->
let ty_t = typeof_aux context t in
+ let _ = typeof_aux context ty in
if not (R.are_convertible ~subst ~metasenv context ty ty_t) then
raise
(TypeCheckerFailure
let ty_he = typeof_aux context he in
let args_with_ty = List.map (fun t -> t, typeof_aux context t) args in
(*
- prerr_endline ("HEAD: " ^ NCicPp.ppterm ~context ty_he);
+ prerr_endline ("HEAD: " ^ NCicPp.ppterm ~subst ~metasenv ~context ty_he);
prerr_endline ("TARGS: " ^ String.concat " | " (List.map (NCicPp.ppterm
- ~context) (List.map snd args_with_ty)));
+ ~subst ~metasenv ~context) (List.map snd args_with_ty)));
prerr_endline ("ARGS: " ^ String.concat " | " (List.map (NCicPp.ppterm
- ~context) (List.map fst args_with_ty)));
+ ~subst ~metasenv ~context) (List.map fst args_with_ty)));
*)
- eat_prods ~subst ~metasenv context ty_he args_with_ty
+ eat_prods ~subst ~metasenv context he ty_he args_with_ty
| C.Appl _ -> raise (AssertFailure (lazy "Appl of length < 2"))
| C.Match (Ref.Ref (_,_,Ref.Ind tyno) as r,outtype,term,pl) ->
let outsort = typeof_aux context outtype in
if parameters = [] then C.Const r
else C.Appl ((C.Const r)::parameters) in
let type_of_sort_of_ind_ty = typeof_aux context sort_of_ind_type in
- if not (check_allowed_sort_elimination ~subst ~metasenv r context
- sort_of_ind_type type_of_sort_of_ind_ty outsort)
- then raise (TypeCheckerFailure (lazy ("Sort elimination not allowed")));
+ check_allowed_sort_elimination ~subst ~metasenv r context
+ sort_of_ind_type type_of_sort_of_ind_ty outsort;
(* let's check if the type of branches are right *)
let leftno,constructorsno =
let inductive,leftno,itl,_,i = E.get_checked_indtys r in
(lazy (Printf.sprintf ("Branch for constructor %s :=\n%s\n"^^
"has type %s\nnot convertible with %s")
(NCicPp.ppterm ~subst ~metasenv ~context
- (C.Const (Ref.mk_constructor j r)))
- (NCicPp.ppterm ~metasenv ~subst ~context (List.nth pl (j-1)))
+ (C.Const (Ref.mk_constructor (j-1) r)))
+ (NCicPp.ppterm ~metasenv ~subst ~context (List.nth pl (j-2)))
(NCicPp.ppterm ~metasenv ~subst ~context p_ty)
(NCicPp.ppterm ~metasenv ~subst ~context exp_p_ty))));
let res = outtype::arguments@[term] in
let arity2 = R.whd ~subst context arity2 in
match arity1,arity2 with
| C.Prod (name,so1,de1), C.Prod (_,so2,de2) ->
- R.are_convertible ~subst ~metasenv context so1 so2 &&
- aux ((name, C.Decl so1)::context)
- (mkapp (S.lift 1 ind) (C.Rel 1)) de1 de2
+ if not (R.are_convertible ~subst ~metasenv context so1 so2) then
+ raise (TypeCheckerFailure (lazy (Printf.sprintf
+ "In outtype: expected %s, found %s"
+ (NCicPp.ppterm ~subst ~metasenv ~context so1)
+ (NCicPp.ppterm ~subst ~metasenv ~context so2)
+ )));
+ aux ((name, C.Decl so1)::context)
+ (mkapp (S.lift 1 ind) (C.Rel 1)) de1 de2
| C.Sort _, C.Prod (name,so,ta) ->
- (R.are_convertible ~subst ~metasenv context so ind &&
- match arity1,ta with
- | (C.Sort (C.CProp | C.Type _), C.Sort _)
- | (C.Sort C.Prop, C.Sort C.Prop) -> true
- | (C.Sort C.Prop, C.Sort (C.CProp | C.Type _)) ->
- let inductive,leftno,itl,_,i = E.get_checked_indtys r in
- let itl_len = List.length itl in
- let _,name,ty,cl = List.nth itl i in
- let cl_len = List.length cl in
- (* is it a singleton or empty non recursive and non informative
- definition? *)
- cl_len = 0 ||
- (itl_len = 1 && cl_len = 1 &&
- is_non_informative [name,C.Decl ty] leftno
- (let _,_,x = List.nth cl 0 in x))
- | _,_ -> false)
- | _,_ -> false
+ if not (R.are_convertible ~subst ~metasenv context so ind) then
+ raise (TypeCheckerFailure (lazy (Printf.sprintf
+ "In outtype: expected %s, found %s"
+ (NCicPp.ppterm ~subst ~metasenv ~context ind)
+ (NCicPp.ppterm ~subst ~metasenv ~context so)
+ )));
+ (match arity1,ta with
+ | (C.Sort (C.CProp | C.Type _), C.Sort _)
+ | (C.Sort C.Prop, C.Sort C.Prop) -> ()
+ | (C.Sort C.Prop, C.Sort (C.CProp | C.Type _)) ->
+ let inductive,leftno,itl,_,i = E.get_checked_indtys r in
+ let itl_len = List.length itl in
+ let _,name,ty,cl = List.nth itl i in
+ let cl_len = List.length cl in
+ (* is it a singleton or empty non recursive and non informative
+ definition? *)
+ if not
+ (cl_len = 0 ||
+ (itl_len = 1 && cl_len = 1 &&
+ is_non_informative [name,C.Decl ty] leftno
+ (let _,_,x = List.nth cl 0 in x)))
+ then
+ raise (TypeCheckerFailure (lazy
+ ("Sort elimination not allowed")));
+ | _,_ -> ())
+ | _,_ -> ()
in
aux
in
typeof_aux context term
-and check_mutual_inductive_defs _ = ()
+and check_mutual_inductive_defs uri ~metasenv ~subst is_ind leftno tyl =
+ (* let's check if the arity of the inductive types are well formed *)
+ List.iter (fun (_,_,x,_) -> ignore (typeof ~subst ~metasenv [] x)) tyl;
+ (* let's check if the types of the inductive constructors are well formed. *)
+ let len = List.length tyl in
+ let tys = List.map (fun (_,n,ty,_) -> (n,(C.Decl ty))) tyl in
+ ignore
+ (List.fold_right
+ (fun (_,_,_,cl) i ->
+ List.iter
+ (fun (_,name,te) ->
+ let debruijnedte = debruijn uri len te in
+ ignore (typeof ~subst ~metasenv tys debruijnedte);
+ (* let's check also the positivity conditions *)
+ if false (*
+ not
+ (are_all_occurrences_positive tys uri indparamsno i 0 len
+ debruijnedte) *)
+ then
+ raise
+ (TypeCheckerFailure
+ (lazy ("Non positive occurence in "^NUri.string_of_uri uri))))
+ cl;
+ i + 1)
+ tyl 1)
and eat_lambdas ~subst ~metasenv context n te =
match (n, R.whd ~subst context te) with
) fl true
*)
-and guarded_by_constructors ~subst _ _ _ _ _ _ _ = assert false
+and guarded_by_constructors ~subst ~metasenv _ _ _ _ _ _ _ = true
and recursive_args ~subst ~metasenv context n nn te =
match R.whd context te with
assert (metasenv = [] && subst = []);
match kind with
| C.Constant (_,_,Some te,ty,_) ->
+(*
prerr_endline ("TY: " ^ NCicPp.ppterm ~subst ~metasenv ~context:[] ty);
prerr_endline ("BO: " ^ NCicPp.ppterm ~subst ~metasenv ~context:[] te);
+*)
let _ = typeof ~subst ~metasenv [] ty in
let ty_te = typeof ~subst ~metasenv [] te in
- prerr_endline "XXXX";
+(* prerr_endline "XXXX"; *)
if not (R.are_convertible ~subst ~metasenv [] ty_te ty) then
raise (TypeCheckerFailure (lazy (Printf.sprintf
"the type of the body is not the one expected:\n%s\nvs\n%s"
(NCicPp.ppterm ~subst ~metasenv ~context:[] ty_te)
(NCicPp.ppterm ~subst ~metasenv ~context:[] ty))))
| C.Constant (_,_,None,ty,_) -> ignore (typeof ~subst ~metasenv [] ty)
- | C.Inductive _ as obj -> check_mutual_inductive_defs obj
+ | C.Inductive (is_ind, leftno, tyl, _) ->
+ check_mutual_inductive_defs uri ~metasenv ~subst is_ind leftno tyl
| C.Fixpoint (inductive,fl,_) ->
let types,kl,len =
List.fold_left
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