X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_refiner%2FnCicRefiner.ml;h=8c92d3328b8556e9ecb91912e140a6f09dee3736;hb=f8d45b2e4fa7817d7ef8312b3bb8a7439bd7fb8c;hp=656955808d5abaa231668c99ede556c9325627ac;hpb=1409a972815b8e4e697d9ad55c77d9292cbea787;p=helm.git diff --git a/helm/software/components/ng_refiner/nCicRefiner.ml b/helm/software/components/ng_refiner/nCicRefiner.ml index 656955808..8c92d3328 100644 --- a/helm/software/components/ng_refiner/nCicRefiner.ml +++ b/helm/software/components/ng_refiner/nCicRefiner.ml @@ -18,16 +18,37 @@ exception AssertFailure of string Lazy.t;; module C = NCic module Ref = NReference +let debug = ref false;; let indent = ref "";; -let inside c = indent := !indent ^ String.make 1 c;; -let outside () = indent := String.sub !indent 0 (String.length !indent -1);; - - -let pp s = +let times = ref [];; +let pp s = + if !debug then prerr_endline (Printf.sprintf "%-20s" !indent ^ " " ^ Lazy.force s) -;; +;; +let inside c = + if !debug then + begin + let time1 = Unix.gettimeofday () in + indent := !indent ^ String.make 1 c; + times := time1 :: !times; + prerr_endline ("{{{" ^ !indent ^ " ") + end +;; +let outside ok = + if !debug then + begin + let time2 = Unix.gettimeofday () in + let time1 = + match !times with time1::tl -> times := tl; time1 | [] -> assert false in + prerr_endline ("}}} " ^ string_of_float (time2 -. time1)); + if not ok then prerr_endline "exception raised!"; + try + indent := String.sub !indent 0 (String.length !indent -1) + with + Invalid_argument _ -> indent := "??"; () + end +;; -let pp _ = ();; let wrap_exc msg = function | NCicUnification.Uncertain _ -> Uncertain msg @@ -36,12 +57,34 @@ let wrap_exc msg = function | e -> raise e ;; -let exp_implicit ~localise metasenv context expty t = - let foo x = match expty with Some t -> `WithType t | None -> x in +let exp_implicit rdb ~localise metasenv subst context with_type t = function - | `Closed -> NCicMetaSubst.mk_meta metasenv [] (foo `Term) - | `Type -> NCicMetaSubst.mk_meta metasenv context (foo `Type) - | `Term -> NCicMetaSubst.mk_meta metasenv context (foo `Term) + | `Closed -> + let metasenv,subst,expty = + match with_type with + None -> metasenv,subst,None + | Some typ -> + let (metasenv,subst),typ = + try + NCicMetaSubst.delift + ~unify:(fun m s c t1 t2 -> + try Some (NCicUnification.unify rdb m s c t1 t2) + with NCicUnification.UnificationFailure _ | NCicUnification.Uncertain _ -> None) + metasenv subst context 0 (0,NCic.Irl 0) typ + with + NCicMetaSubst.MetaSubstFailure _ + | NCicMetaSubst.Uncertain _ -> + raise (RefineFailure (lazy (localise t,"Trying to create a closed meta with a non closed type"))) + + in + metasenv,subst,Some typ + in + NCicMetaSubst.mk_meta metasenv [] ?with_type:expty `IsTerm,subst + | `Type -> NCicMetaSubst.mk_meta metasenv context ?with_type `IsType,subst + | `Term -> NCicMetaSubst.mk_meta metasenv context ?with_type `IsTerm,subst + | `Tagged s -> + NCicMetaSubst.mk_meta + ~attrs:[`Name s] metasenv context ?with_type `IsTerm,subst | `Vector -> raise (RefineFailure (lazy (localise t, "A vector of implicit terms " ^ "can only be used in argument position"))) @@ -63,7 +106,7 @@ let check_allowed_sort_elimination rdb localise r orig = match arity1 with | C.Prod (name,so1,de1) (* , t ==?== C.Prod _ *) -> let metasenv, _, meta, _ = - NCicMetaSubst.mk_meta metasenv ((name,C.Decl so1)::context) `Type + NCicMetaSubst.mk_meta metasenv ((name,C.Decl so1)::context) `IsType in let metasenv, subst = try NCicUnification.unify rdb metasenv subst context @@ -76,7 +119,7 @@ let check_allowed_sort_elimination rdb localise r orig = aux metasenv subst ((name, C.Decl so1)::context) (mkapp (NCicSubstitution.lift 1 ind) (C.Rel 1)) de1 meta | C.Sort _ (* , t ==?== C.Prod _ *) -> - let metasenv, _, meta, _ = NCicMetaSubst.mk_meta metasenv [] `Type in + let metasenv, _, meta, _ = NCicMetaSubst.mk_meta metasenv [] `IsSort in let metasenv, subst = try NCicUnification.unify rdb metasenv subst context arity2 (C.Prod ("_", ind, meta)) @@ -91,7 +134,7 @@ let check_allowed_sort_elimination rdb localise r orig = with exc -> raise (wrap_exc (lazy (localise orig, "Sort elimination not allowed ")) exc)) | _ -> assert false - (*D*)in outside(); rc with exc -> outside (); raise exc + (*D*)in outside true; rc with exc -> outside false; raise exc in aux ;; @@ -116,7 +159,7 @@ let rec typeof rdb let metasenv, subst = (*D*)inside 'U'; try let rc = NCicUnification.unify rdb metasenv subst context infty expty - (*D*)in outside(); rc with exc -> outside (); raise exc + (*D*)in outside true; rc with exc -> outside false; raise exc in metasenv, subst, t, expty with @@ -125,7 +168,7 @@ let rec typeof rdb try_coercions rdb ~localise metasenv subst context t orig infty expty true exc) | None -> metasenv, subst, t, infty - (*D*)in outside(); rc with exc -> outside (); raise exc + (*D*)in outside true; rc with exc -> outside false; raise exc in let rec typeof_aux metasenv subst context expty = fun t as orig -> @@ -152,24 +195,19 @@ let rec typeof rdb raise (RefineFailure (lazy (localise t, Lazy.force msg))) | NCicEnvironment.AssertFailure msg -> raise (AssertFailure msg)) | C.Implicit infos -> - let metasenv,_,t,ty = - exp_implicit ~localise metasenv context expty t infos + let (metasenv,_,t,ty),subst = + exp_implicit rdb ~localise metasenv subst context expty t infos in + if expty = None then + typeof_aux metasenv subst context None t + else metasenv, subst, t, ty | C.Meta (n,l) as t -> - let ty = + let metasenv, ty = try - let _,_,_,ty = NCicUtils.lookup_subst n subst in ty - with NCicUtils.Subst_not_found _ -> try - let _,_,ty = NCicUtils.lookup_meta n metasenv in - match ty with C.Implicit _ -> - prerr_endline (string_of_int n); - prerr_endline (NCicPp.ppmetasenv ~subst metasenv); - prerr_endline (NCicPp.ppsubst ~metasenv subst); - assert false | _ -> ty - with NCicUtils.Meta_not_found _ -> - raise (AssertFailure (lazy (Printf.sprintf - "%s not found" (NCicPp.ppterm ~subst ~metasenv ~context t)))) + let _,_,_,ty = NCicUtils.lookup_subst n subst in metasenv, ty + with NCicUtils.Subst_not_found _ -> + NCicMetaSubst.extend_meta metasenv n in metasenv, subst, t, NCicSubstitution.subst_meta l ty | C.Const _ -> @@ -209,7 +247,7 @@ let rec typeof rdb (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 + NCicUnification.unify ~test_eq_only:true 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 @@ -240,7 +278,8 @@ let rec typeof rdb | Some x -> let m, s, x = NCicUnification.delift_type_wrt_terms - rdb metasenv subst context x [t] + rdb metasenv subst context1 (NCicSubstitution.lift 1 x) + [NCicSubstitution.lift 1 t] in m, s, Some x in @@ -299,16 +338,11 @@ let rec typeof rdb (* next lines are to do a subst-expansion of the outtype, so that when it becomes a beta-abstraction, the beta-redex is fired during substitution *) - (*CSC: this is instantiate! should we move it from tactics to the - refiner? I think so! *) - let metasenv,metanoouttype,newouttype,metaoutsort = - NCicMetaSubst.mk_meta metasenv context `Term in - let metasenv,subst = - NCicUnification.unify rdb metasenv subst context outsort metaoutsort in - let metasenv = - List.filter (function (j,_) -> j <> metanoouttype) metasenv in + let _,fresh_metanoouttype,newouttype,_ = + NCicMetaSubst.mk_meta metasenv context `IsTerm in let subst = - (metanoouttype,(Some "outtype",context,outtype,metaoutsort))::subst in + (fresh_metanoouttype,([`Name "outtype"],context,outtype,outsort)) + ::subst in let outtype = newouttype in (* let's control if the sort elimination is allowed: [(I q1 ... qr)|B] *) @@ -362,7 +396,7 @@ let rec typeof rdb 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 + (*D*)in outside true; rc with exc -> outside false; raise exc in typeof_aux metasenv subst context expty term @@ -374,7 +408,7 @@ and try_coercions rdb let rec first exc = function | [] -> raise (wrap_exc (lazy (localise orig_t, Printf.sprintf - "The term %s has type %s but is here used with type %s" + "The term\n%s\nhas type\n%s\nbut is here used with type\n%s" (NCicPp.ppterm ~metasenv ~subst ~context t) (NCicPp.ppterm ~metasenv ~subst ~context infty) (NCicPp.ppterm ~metasenv ~subst ~context expty))) exc) @@ -432,7 +466,10 @@ and force_to_sort rdb metasenv subst context t orig_t localise ty = | C.Sort _ as ty -> metasenv, subst, t, ty | ty -> try_coercions rdb ~localise metasenv subst context - t orig_t ty (NCic.Sort (NCic.Type NCicEnvironment.type0)) false + t orig_t ty (NCic.Sort (NCic.Type + (match NCicEnvironment.get_universes () with + | x::_ -> x + | _ -> assert false))) false (Uncertain (lazy (localise orig_t, "The type of " ^ NCicPp.ppterm ~metasenv ~subst ~context t ^ " is not a sort: " ^ NCicPp.ppterm ~metasenv ~subst ~context ty))) @@ -475,7 +512,9 @@ and guess_name subst ctx ty = and eat_prods rdb ~localise force_ty metasenv subst context expty orig_t orig_he he ty_he args = (*D*)inside 'E'; try let rc = - let rec aux metasenv subst args_so_far he ty_he = function + let rec aux metasenv subst args_so_far he ty_he xxx = + (*D*)inside 'V'; try let rc = + match xxx with | [] -> let res = NCicUntrusted.mk_appl he (List.rev args_so_far) in pp(lazy("FORCE FINAL APPL: " ^ @@ -501,30 +540,30 @@ and eat_prods rdb ~localise force_ty metasenv subst context expty orig_t orig_he aux metasenv subst args_so_far he ty_he (NCic.Implicit `Term :: NCic.Implicit `Vector :: tl) with - Uncertain msg | RefineFailure msg -> raise (wrap_exc msg exc))) + Uncertain msg | RefineFailure msg -> raise (wrap_exc msg exc)) + | RefineFailure msg when not (has_some_more_pis ty_he) -> + (* instantiating the head could change the has_some_more_pis flag *) + raise (Uncertain msg)) | arg::tl -> match NCicReduction.whd ~subst context ty_he with | C.Prod (_,s,t) -> let metasenv, subst, arg, _ = - typeof rdb ~localise - metasenv subst context arg (Some s) in + typeof rdb ~localise metasenv subst context arg (Some s) in let t = NCicSubstitution.subst ~avoid_beta_redexes:true arg t in aux metasenv subst (arg :: args_so_far) he t tl | C.Meta _ | C.Appl (C.Meta _ :: _) as t -> let metasenv, subst, arg, ty_arg = - typeof rdb ~localise - metasenv subst context arg None in + typeof rdb ~localise metasenv subst context arg None in let name = guess_name subst context ty_arg in let metasenv, _, meta, _ = NCicMetaSubst.mk_meta metasenv - ((name,C.Decl ty_arg) :: context) `Type + ((name,C.Decl ty_arg) :: context) `IsType in let flex_prod = C.Prod (name, ty_arg, meta) in (* next line grants that ty_args is a type *) let metasenv,subst, flex_prod, _ = - typeof rdb ~localise metasenv subst - context flex_prod None in + typeof rdb ~localise metasenv subst context flex_prod None in (* pp (lazy ( "UNIFICATION in CTX:\n"^ NCicPp.ppcontext ~metasenv ~subst context @@ -568,6 +607,7 @@ and eat_prods rdb ~localise force_ty metasenv subst context expty orig_t orig_he (List.length args) (List.length args_so_far)))) in aux metasenv subst [] newhead newheadty (arg :: tl) + (*D*)in outside true; rc with exc -> outside false; raise exc in (* We need to reverse the order of the new created metas since they are pushed on top of the metasenv in the wrong order *) @@ -578,7 +618,7 @@ and eat_prods rdb ~localise force_ty metasenv subst context expty orig_t orig_he List.partition (fun (i,_) -> i <= highest_meta) metasenv in (List.rev metasenv_new) @ metasenv_old, subst, newhead, newheadty - (*D*)in outside(); rc with exc -> outside (); raise exc + (*D*)in outside true; rc with exc -> outside false; raise exc ;; let rec first f l1 l2 =