| (arg, ty_arg)::tl ->
(match R.whd ~subst context ty_he with
| C.Prod (n,s,t) ->
+(*
+ prerr_endline (NCicPp.ppterm ~context s ^ " - Vs - " ^ NCicPp.ppterm
+ ~context ty_arg);
+ prerr_endline (NCicPp.ppterm ~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
else
with DoesOccur -> false
;;
-exception NotGuarded;;
+exception NotGuarded of string Lazy.t;;
let rec typeof ~subst ~metasenv context term =
- let rec typeof_aux context = function
+ let rec typeof_aux context =
+ fun t -> (*prerr_endline (NCicPp.ppterm ~context t); *)
+ match t with
| C.Rel n ->
(try
match List.nth context (n - 1) with
| C.Appl (he::(_::_ as args)) ->
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 ("TARGS: " ^ String.concat " | " (List.map (NCicPp.ppterm
+ ~context) (List.map snd args_with_ty)));
+ prerr_endline ("ARGS: " ^ String.concat " | " (List.map (NCicPp.ppterm
+ ~context) (List.map fst args_with_ty)));
+*)
eat_prods ~subst ~metasenv context ty_he args_with_ty
| C.Appl _ -> raise (AssertFailure (lazy "Appl of length < 2"))
- | C.Match (Ref.Ref (dummy_depth,uri,Ref.Ind tyno) as r,outtype,term,pl) ->
+ | C.Match (Ref.Ref (_,_,Ref.Ind tyno) as r,outtype,term,pl) ->
let outsort = typeof_aux context outtype in
let leftno = E.get_indty_leftno r in
let parameters, arguments =
in
if List.length pl <> constructorsno then
raise (TypeCheckerFailure (lazy ("Wrong number of cases in a match")));
- let j,branches_ok =
+ let j,branches_ok,p_ty, exp_p_ty =
List.fold_left
- (fun (j,b) p ->
+ (fun (j,b,old_p_ty,old_exp_p_ty) p ->
if b then
let cons =
- let cons = Ref.Ref (dummy_depth, uri, Ref.Con (tyno, j)) in
+ let cons = Ref.mk_constructor j r in
if parameters = [] then C.Const cons
else C.Appl (C.Const cons::parameters)
in
let ty_p = typeof_aux context p in
let ty_cons = typeof_aux context cons in
let ty_branch =
- type_of_branch ~subst context leftno outtype cons ty_cons 0 in
- j+1, R.are_convertible ~subst ~metasenv context ty_p ty_branch
+ type_of_branch ~subst context leftno outtype cons ty_cons 0
+ in
+ j+1, R.are_convertible ~subst ~metasenv context ty_p ty_branch,
+ ty_p, ty_branch
else
- j,false
- ) (1,true) pl
- in
- if not branches_ok then
- raise
- (TypeCheckerFailure
- (lazy (Printf.sprintf "Branch for constructor %s has wrong type"
- (NCicPp.ppterm (C.Const
- (Ref.Ref (dummy_depth, uri, Ref.Con (tyno, j))))))));
- let res = outtype::arguments@[term] in
- R.head_beta_reduce (C.Appl res)
+ j,false,old_p_ty,old_exp_p_ty
+ ) (1,true,C.Sort C.Prop,C.Sort C.Prop) pl
+ in
+ if not branches_ok then
+ raise
+ (TypeCheckerFailure
+ (lazy (Printf.sprintf ("Branch for constructor %s :=\n%s\n"^^
+ "has type %s\nnot convertible with %s") (NCicPp.ppterm (C.Const
+ (Ref.mk_constructor j r)))
+ (NCicPp.ppterm ~context (List.nth pl (j-1)))
+ (NCicPp.ppterm ~context p_ty) (NCicPp.ppterm ~context exp_p_ty))));
+ let res = outtype::arguments@[term] in
+ R.head_beta_reduce (C.Appl res)
| C.Match _ -> assert false
and type_of_branch ~subst context leftno outty cons tycons liftno =
in
typeof_aux context term
-and check_mutual_inductive_defs _ = assert false
+and check_mutual_inductive_defs _ = ()
and eat_lambdas ~subst context n te =
match (n, R.whd ~subst context te) with
and guarded_by_destructors ~subst context recfuns t =
let recursor f k t = NCicUtils.fold shift_k k (fun k () -> f k) () t in
let rec aux (context, recfuns, x, safes as k) = function
- | C.Rel m when List.mem_assoc m recfuns -> raise NotGuarded
+ | C.Rel m as t when List.mem_assoc m recfuns ->
+ raise (NotGuarded (lazy (NCicPp.ppterm ~context t ^ " passed around")))
| C.Rel m ->
(match List.nth context (m-1) with
| _,C.Decl _ -> ()
| _,C.Def (bo,_) -> aux (context, recfuns, x, safes) (S.lift m bo))
| C.Meta _ -> ()
- | C.Appl ((C.Rel m)::tl) when List.mem_assoc m recfuns ->
+ | C.Appl ((C.Rel m)::tl) as t when List.mem_assoc m recfuns ->
let rec_no = List.assoc m recfuns in
- if not (List.length tl > rec_no) then raise NotGuarded
+ if not (List.length tl > rec_no) then
+ raise (NotGuarded (lazy
+ (NCicPp.ppterm ~context ~subst t ^
+ " is a partial application of a fix")))
else
let rec_arg = List.nth tl rec_no in
- if not (is_really_smaller ~subst k rec_arg) then raise
- NotGuarded;
+ if not (is_really_smaller ~subst k rec_arg) then
+ raise (NotGuarded (lazy
+ (NCicPp.ppterm ~context ~subst rec_arg ^ " not smaller")));
List.iter (aux k) tl
| C.Match (Ref.Ref (_,uri,_) as ref,outtype,term,pl) as t ->
(match R.whd ~subst context term with
| _ -> recursor aux k t)
| t -> recursor aux k t
in
- try aux (context, recfuns, 1, []) t;true
- with NotGuarded -> false
+ try aux (context, recfuns, 1, []) t
+ with NotGuarded s -> raise (TypeCheckerFailure s)
(*
| C.Fix (_, fl) ->
let _,_,arity,_ = List.nth tl i in arity
| (_,_,_,_,C.Inductive (_,_,tl,_)), Ref.Ref (_,_,Ref.Con (i,j)) ->
let _,_,_,cl = List.nth tl i in
- let _,_,arity = List.nth cl j in
+ let _,_,arity = List.nth cl (j-1) in
arity
| (_,_,_,_,C.Fixpoint (_,fl,_)), Ref.Ref (_,_,(Ref.Fix (i,_)|Ref.CoFix i)) ->
let _,_,_,arity,_ = List.nth fl i in
assert (metasenv = [] && subst = []);
match kind with
| C.Constant (_,_,Some te,ty,_) ->
+ prerr_endline ("TY: " ^ NCicPp.ppterm ty);
+ prerr_endline ("BO: " ^ NCicPp.ppterm te);
let _ = typeof ~subst ~metasenv [] ty in
let ty_te = typeof ~subst ~metasenv [] te in
+ 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 ty_te) (NCicPp.ppterm ty))))
| C.Constant (_,_,None,ty,_) -> ignore (typeof ~subst ~metasenv [] ty)
- | C.Inductive _ as obj -> check_mutual_inductive_defs uri obj
+ | C.Inductive _ as obj -> check_mutual_inductive_defs obj
| C.Fixpoint (inductive,fl,_) ->
let types,kl,len =
List.fold_left
) ([],[],0) fl
in
List.iter (fun (_,name,x,ty,bo) ->
+ let bo = debruijn uri len bo in
let ty_bo = typeof ~subst ~metasenv types bo in
if not (R.are_convertible ~subst ~metasenv types ty_bo (S.lift len ty))
then raise (TypeCheckerFailure (lazy ("(Co)Fix: ill-typed bodies")))
let rec enum_from k =
function [] -> [] | v::tl -> (k,v)::enum_from (k+1) tl
in
- if not (guarded_by_destructors
- ~subst context (enum_from (x+1) kl) m) then
- raise(TypeCheckerFailure(lazy("Fix: not guarded by destructors")))
+ guarded_by_destructors ~subst context (enum_from (x+1) kl) m;
end else
match returns_a_coinductive ~subst [] ty with
| None ->
projects / helm.git / blobdiff