let typeof_obj hdb
?(localise=fun _ -> Stdpp.dummy_loc)
- ~look_for_coercion (uri,height,metasenv,subst, obj)
+ ~look_for_coercion (uri,height,metasenv,subst,obj)
=
let check_type metasenv subst (ty as orig_ty) = (* XXX fattorizza *)
let metasenv, subst, ty, sort =
typeof hdb ~localise ~look_for_coercion metasenv subst [] ty None
in
- let metasenv, subst, ty, _ =
+ let metasenv, subst, ty, sort =
force_to_sort hdb ~look_for_coercion
metasenv subst [] ty orig_ty localise sort
in
- metasenv, subst, ty
+ metasenv, subst, ty, sort
in
match obj with
| C.Constant (relevance, name, bo, ty , attr) ->
- let metasenv, subst, ty = check_type metasenv subst ty in
+ let metasenv, subst, ty, _ = check_type metasenv subst ty in
let metasenv, subst, bo, ty, height =
match bo with
| Some bo ->
let types, metasenv, subst, rev_fl =
List.fold_left
(fun (types, metasenv, subst, fl) (relevance,name,k,ty,bo) ->
- let metasenv, subst, ty = check_type metasenv subst ty in
+ let metasenv, subst, ty, _ = check_type metasenv subst ty in
let dbo = NCicTypeChecker.debruijn uri len [] bo in
let localise = relocalise localise dbo bo in
(name,C.Decl ty)::types,
in
uri, height, metasenv, subst,
C.Fixpoint (inductive, fl, attr)
-
- | C.Inductive (_ind, _leftno, _itl, _attr) -> assert false
-(*
- (* 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.rev_map (fun (_,n,ty,_) -> (n,(C.Decl ty))) tyl in
- 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
- List.iter
- (fun (k_relev,_,te) ->
- let _,k_relev = HExtlib.split_nth leftno k_relev in
- let te = debruijn uri len [] te in
- let context,te = split_prods ~subst tys leftno te in
- let _,chopped_context_rev =
- HExtlib.split_nth (List.length tys) (List.rev context) in
- let sx_context_te_rev,_ =
- HExtlib.split_nth leftno chopped_context_rev in
- (try
- ignore (List.fold_left2
- (fun context item1 item2 ->
- let convertible =
- match item1,item2 with
- (n1,C.Decl ty1),(n2,C.Decl ty2) ->
- n1 = n2 &&
- R.are_convertible ~metasenv ~subst context ty1 ty2
- | (n1,C.Def (bo1,ty1)),(n2,C.Def (bo2,ty2)) ->
- n1 = n2
- && R.are_convertible ~metasenv ~subst context ty1 ty2
- && R.are_convertible ~metasenv ~subst context bo1 bo2
- | _,_ -> false
- in
- if not convertible then
- raise (TypeCheckerFailure (lazy
- ("Mismatch between the left parameters of the constructor " ^
- "and those of its inductive type")))
- else
- item1::context
- ) [] sx_context_ty_rev sx_context_te_rev)
- with Invalid_argument "List.fold_left2" -> assert false);
- let con_sort = typeof ~subst ~metasenv context te in
- (match R.whd ~subst context con_sort, R.whd ~subst [] ty_sort with
- (C.Sort (C.Type u1) as s1), (C.Sort (C.Type u2) as s2) ->
- if not (E.universe_leq u1 u2) then
- raise
- (TypeCheckerFailure
- (lazy ("The type " ^ PP.ppterm ~metasenv ~subst ~context s1^
- " of the constructor is not included in the inductive" ^
- " type sort " ^ PP.ppterm ~metasenv ~subst ~context s2)))
- | C.Sort _, C.Sort C.Prop
- | C.Sort _, C.Sort C.Type _ -> ()
- | _, _ ->
+ | C.Inductive (ind, leftno, itl, attr) ->
+ let len = List.length itl in
+ let metasenv,subst,rev_itl,tys =
+ List.fold_left
+ (fun (metasenv,subst,res,ctx) (relevance,n,ty,cl) ->
+ let metasenv, subst, ty, _ = check_type metasenv subst ty in
+ metasenv,subst,(relevance,n,ty,cl)::res,(n,NCic.Decl ty)::ctx
+ ) (metasenv,subst,[],[]) itl in
+ let metasenv,subst,itl,_ =
+ List.fold_left
+ (fun (metasenv,subst,res,i) (it_relev,n,ty,cl) ->
+ let context,ty_sort = NCicReduction.split_prods ~subst [] ~-1 ty in
+ let sx_context_ty_rev,_= HExtlib.split_nth leftno (List.rev context) in
+ let metasenv,subst,cl =
+ List.fold_right
+ (fun (k_relev,n,te) (metasenv,subst,res) ->
+ let _,k_relev = HExtlib.split_nth leftno k_relev in
+ let te = NCicTypeChecker.debruijn uri len [] 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
+ let sx_context_te_rev,_ =
+ HExtlib.split_nth leftno chopped_context_rev in
+ let metasenv,subst,_ =
+ try
+ List.fold_left2
+ (fun (metasenv,subst,context) item1 item2 ->
+ let (metasenv,subst),convertible =
+ try
+ match item1,item2 with
+ (n1,C.Decl ty1),(n2,C.Decl ty2) ->
+ if n1 = n2 then
+ NCicUnification.unify hdb ~test_eq_only:true metasenv
+ subst context ty1 ty2,true
+ else
+ (metasenv,subst),false
+ | (n1,C.Def (bo1,ty1)),(n2,C.Def (bo2,ty2)) ->
+ if n1 = n2 then
+ let metasenv,subst =
+ NCicUnification.unify hdb ~test_eq_only:true metasenv
+ subst context ty1 ty2
+ in
+ NCicUnification.unify hdb ~test_eq_only:true metasenv
+ subst context bo1 bo2,true
+ else
+ (metasenv,subst),false
+ | _,_ -> (metasenv,subst),false
+ with
+ | NCicUnification.Uncertain _
+ | NCicUnification.UnificationFailure _ ->
+ (metasenv,subst),false
+ in
+ let term2 =
+ match item2 with
+ _,C.Decl t -> t
+ | _,C.Def (b,_) -> b in
+ if not convertible then
+ raise (RefineFailure (lazy (localise term2,
+ ("Mismatch between the left parameters of the constructor " ^
+ "and those of its inductive type"))))
+ else
+ metasenv,subst,item1::context
+ ) (metasenv,subst,[]) sx_context_ty_rev sx_context_te_rev
+ with Invalid_argument "List.fold_left2" -> assert false
+ in
+ let metasenv, subst, te, con_sort = check_type metasenv subst te in
+ (match
+ NCicReduction.whd ~subst context con_sort,
+ NCicReduction.whd ~subst [] ty_sort
+ with
+ (C.Sort (C.Type u1) as s1), (C.Sort (C.Type u2) as s2) ->
+ if not (NCicEnvironment.universe_leq u1 u2) then
+ raise
+ (RefineFailure
+ (lazy(localise te, "The type " ^
+ NCicPp.ppterm ~metasenv ~subst ~context s1 ^
+ " of the constructor is not included in the inductive"^
+ " type sort " ^
+ NCicPp.ppterm ~metasenv ~subst ~context s2)))
+ | C.Sort _, C.Sort C.Prop
+ | C.Sort _, C.Sort C.Type _ -> ()
+ | _, _ ->
+ raise
+ (RefineFailure
+ (lazy (localise te,
+ "Wrong constructor or inductive arity shape"))));
+ (* let's check also the positivity conditions *)
+ if
+ not
+ (NCicTypeChecker.are_all_occurrences_positive
+ ~subst context uri leftno (i+leftno) leftno (len+leftno) te)
+ then
raise
- (TypeCheckerFailure
- (lazy ("Wrong constructor or inductive arity shape"))));
- (* let's check also the positivity conditions *)
- if
- not
- (are_all_occurrences_positive ~subst context uri leftno
- (i+leftno) leftno (len+leftno) te)
- then
- raise
- (TypeCheckerFailure
- (lazy ("Non positive occurence in "^NUri.string_of_uri
- uri)))
- else check_relevance ~subst ~metasenv context k_relev te)
- cl;
- check_relevance ~subst ~metasenv [] it_relev ty;
- i+1)
- tyl 1)
-*)
-
-
+ (RefineFailure
+ (lazy (localise te,
+ "Non positive occurence in " ^ NUri.string_of_uri uri)))
+ else
+ metasenv,subst,(k_relev,n,te)::res
+ ) cl (metasenv,subst,[])
+ in
+ metasenv,subst,(it_relev,n,ty,cl)::res,i-1
+ ) (metasenv,subst,[],List.length rev_itl) rev_itl
+ in
+ uri, height, metasenv, subst, C.Inductive (ind, leftno, itl, attr)
;;
-
-
(* vim:set foldmethod=marker: *)
projects / helm.git / blobdiff