| C.Lambda _ when skip_lambda -> metasenv, subst, t, expty
| C.Appl _ when skip_appl -> metasenv, subst, t, expty
| _ ->
- pp (lazy (
+ pp (lazy ("forcing infty=expty: "^
(NCicPp.ppterm ~metasenv ~subst ~context infty) ^ " === " ^
(NCicPp.ppterm ~metasenv ~subst:[] ~context expty)));
try
let rec typeof_aux metasenv subst context expty =
fun t as orig ->
(*D*)inside 'R'; try let rc =
- pp (lazy (NCicPp.ppterm ~metasenv ~subst ~context t));
- pp (lazy (if expty = None then "NONE" else "SOME"));
- if (List.exists (fun (i,_) -> i=29) subst) then
- pp (lazy (NCicPp.ppsubst ~metasenv subst));
+ pp (lazy (NCicPp.ppterm ~metasenv ~subst ~context t ^ " ::exp:: " ^
+ match expty with None -> "None" | Some e ->
+ NCicPp.ppterm ~metasenv ~subst ~context e));
let metasenv, subst, t, infty =
match t with
| C.Rel n ->
let (metasenv,subst), exp_ty_t =
match exp_s with
| Some exp_s ->
- (try NCicUnification.unify rdb metasenv subst context s exp_s,exp_ty_t
+ (try
+ pp(lazy("Force source to: "^NCicPp.ppterm ~metasenv ~subst
+ ~context exp_s));
+ NCicUnification.unify rdb metasenv subst context s exp_s,exp_ty_t
with exc -> raise (wrap_exc (lazy (localise orig_s, Printf.sprintf
"Source type %s was expected to be %s" (NCicPp.ppterm ~metasenv
~subst ~context s) (NCicPp.ppterm ~metasenv ~subst ~context
metasenv, subst, C.LetIn (n, ty, t, bo), bo_ty
| C.Appl ((he as orig_he)::(_::_ as args)) ->
let upto = match orig_he with C.Meta _ -> List.length args | _ -> 0 in
- let metasenv, subst, he, ty_he =
- typeof_aux metasenv subst context None he in
- let metasenv, subst, t, ty =
- eat_prods rdb ~localise force_ty metasenv subst context expty t
- orig_he he ty_he args in
- let t = if upto > 0 then NCicReduction.head_beta_reduce ~upto t else t in
- metasenv, subst, t, ty
+ let hbr t =
+ if upto > 0 then NCicReduction.head_beta_reduce ~upto t else t
+ in
+ let refine_appl () =
+ let metasenv, subst, he, ty_he =
+ typeof_aux metasenv subst context None he in
+ let metasenv, subst, t, ty =
+ eat_prods rdb ~localise force_ty metasenv subst context expty t
+ orig_he he ty_he args in
+ metasenv, subst, hbr t, ty
+ in
+ if args = [C.Implicit `Vector] && expty <> None then
+ (* we try here to expand the vector a 0 implicits, but we use
+ * the expected type *)
+ try
+ let metasenv, subst, he, ty_he =
+ typeof_aux metasenv subst context expty he in
+ metasenv, subst, hbr he, ty_he
+ with Uncertain _ | RefineFailure _ -> refine_appl ()
+ else refine_appl ()
| C.Appl _ -> raise (AssertFailure (lazy "Appl of length < 2"))
| C.Match (Ref.Ref (_,Ref.Ind (_,tyno,_)) as r,
outtype,(term as orig_term),pl) as orig ->
NCicTypeChecker.type_of_branch
~subst context leftno outtype cons ty_cons in
pp (lazy ("TYPEOFBRANCH: " ^
- NCicPp.ppterm ~metasenv ~subst ~context p ^ " ::: " ^
+ NCicPp.ppterm ~metasenv ~subst ~context p ^ " ::inf:: " ^
NCicPp.ppterm ~metasenv ~subst ~context ty_branch ));
let metasenv, subst, p, _ =
typeof_aux metasenv subst context (Some ty_branch) p in
metasenv, subst, C.Match (r, outtype, term, pl),resty
| C.Match _ -> assert false
in
- pp (lazy (NCicPp.ppterm ~metasenv ~subst ~context t ^ " :: "^
+ pp (lazy (NCicPp.ppterm ~metasenv ~subst ~context t ^ " ::inf:: "^
NCicPp.ppterm ~metasenv ~subst ~context infty ));
force_ty true true metasenv subst context orig t infty expty
(*D*)in outside(); rc with exc -> outside (); raise exc
| NCicUnification.UnificationFailure _ -> first exc tl
| NCicUnification.Uncertain _ as exc -> first exc tl
in
+ pp(lazy("try_coercion " ^
+ NCicPp.ppterm ~metasenv ~subst ~context infty ^ " |---> " ^
+ NCicPp.ppterm ~metasenv ~subst ~context expty));
first exc
(NCicCoercion.look_for_coercion
rdb metasenv subst context infty expty)
let rec aux metasenv subst args_so_far he ty_he = function
| [] ->
let res = NCicUntrusted.mk_appl he (List.rev args_so_far) in
- force_ty true false metasenv subst context orig_t res ty_he expty
+ pp(lazy("FORCE FINAL APPL: " ^
+ NCicPp.ppterm ~metasenv ~subst ~context res ^
+ " of type " ^ NCicPp.ppterm ~metasenv ~subst ~context ty_he
+ ^ " to type " ^ match expty with None -> "None" | Some x ->
+ NCicPp.ppterm ~metasenv ~subst ~context x));
+ (* whatever the term is, we force the type. in case of ((Lambda..) ?...)
+ * the application may also be a lambda! *)
+ force_ty false false metasenv subst context orig_t res ty_he expty
| NCic.Implicit `Vector::tl ->
let has_some_more_pis x =
match NCicReduction.whd ~subst context x with
(NCicPp.ppterm ~metasenv ~subst ~context he)
(NCicPp.ppterm ~metasenv ~subst ~context t)
(NCicPp.ppterm ~metasenv ~subst ~context arg)
- (NCicPp.ppterm ~metasenv ~subst ~context ty_arg))) exc)
+ (NCicPp.ppterm ~metasenv ~subst ~context ty_arg)))
+ (match exc with
+ | NCicUnification.UnificationFailure m ->
+ NCicUnification.Uncertain m
+ | x -> x))
(* XXX coerce to funclass *)
in
let meta = NCicSubstitution.subst ~avoid_beta_redexes:true arg meta in