From 0d24092ae5bbe510ed083032e156007ae6fcc53d Mon Sep 17 00:00:00 2001 From: Enrico Tassi Date: Fri, 16 Oct 2009 12:41:22 +0000 Subject: [PATCH] new lambda instros and better logging --- .../components/ng_refiner/nCicUnification.ml | 118 +++++++----------- 1 file changed, 48 insertions(+), 70 deletions(-) diff --git a/helm/software/components/ng_refiner/nCicUnification.ml b/helm/software/components/ng_refiner/nCicUnification.ml index 7bec66a77..8e84c015d 100644 --- a/helm/software/components/ng_refiner/nCicUnification.ml +++ b/helm/software/components/ng_refiner/nCicUnification.ml @@ -91,14 +91,16 @@ let inside c = prerr_endline ("{{{" ^ !indent ^ " ") end ;; -let outside ok = +let outside exc_opt = 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!"; + (match exc_opt with + | Some e -> prerr_endline ("exception raised: " ^ Printexc.to_string e) + | None -> ()); try indent := String.sub !indent 0 (String.length !indent -1) with @@ -159,47 +161,26 @@ let rec could_reduce = | C.Appl [] | C.LetIn _ | C.Implicit _ -> assert false ;; -let rec lambda_intros rdb metasenv subst context t args = - let tty = NCicTypeChecker.typeof ~metasenv ~subst context t in - let argsty = - List.map - (fun arg -> arg, NCicTypeChecker.typeof ~metasenv ~subst context arg) args in - let context_of_args = context in - let rec mk_lambda metasenv subst context n processed_args = function - | [] -> +let rec lambda_intros rdb metasenv subst context argsno ty = + pp (lazy ("LAMBDA INTROS: " ^ NCicPp.ppterm ~metasenv ~subst ~context ty)); + match argsno with + 0 -> let metasenv, _, bo, _ = - NCicMetaSubst.mk_meta metasenv context - (`WithType (NCicSubstitution.lift n tty)) + NCicMetaSubst.mk_meta metasenv context (`WithType ty) in - metasenv, subst, bo - | (arg,ty)::tail -> - pp(lazy("arg{ " ^ - NCicPp.ppterm ~metasenv ~subst ~context:context_of_args arg ^ " : " ^ - NCicPp.ppterm ~metasenv ~subst ~context:context_of_args ty)); - let metasenv, subst, telescopic_ty = - if processed_args = [] then metasenv, subst, ty else - let _ = pp(lazy("delift")) in - delift_type_wrt_terms rdb metasenv subst context - (NCicSubstitution.lift n ty) - (List.map (NCicSubstitution.lift n) (List.rev processed_args)) - in - pp(lazy("arg} "^NCicPp.ppterm ~metasenv ~subst ~context telescopic_ty)); - let name = "HBeta"^string_of_int n in - let metasenv, subst, bo = - mk_lambda metasenv subst ((name,NCic.Decl telescopic_ty)::context) (n+1) - (arg::processed_args) tail - in - metasenv, subst, NCic.Lambda (name, telescopic_ty, bo) - in - pp(lazy("LAMBDA_INTROS{ " ^ - NCicPp.ppterm ~metasenv ~subst ~context t ^ ":" ^ - NCicPp.ppterm ~metasenv ~subst ~context tty ^ " over " ^ - String.concat "," (List.map (NCicPp.ppterm ~metasenv ~subst ~context)args))); - let rc = mk_lambda metasenv subst context 0 [] argsty in - pp(lazy("LAMBDA_INTROS}")); - rc - -and instantiate rdb test_eq_only metasenv subst context n lc t swap = + metasenv, bo + | _ -> + (match NCicReduction.whd ~subst context ty with + C.Prod (n,so,ta) -> + let metasenv,bo = + lambda_intros rdb metasenv subst + ((n,C.Decl so)::context) (argsno - 1) ta + in + metasenv,C.Lambda (n,so,bo) + | _ -> assert false) +;; + +let rec instantiate rdb test_eq_only metasenv subst context n lc t swap = (*D*) inside 'I'; try let rc = pp (lazy(string_of_int n ^ " :=?= "^ NCicPp.ppterm ~metasenv ~subst ~context t)); @@ -284,8 +265,9 @@ and instantiate rdb test_eq_only metasenv subst context n lc t swap = let metasenv = List.filter (fun x,_ -> i <> x) metasenv in metasenv, subst, m, j | NCic.Appl (NCic.Meta _ as hd :: args) as t -> - let metasenv, subst, lambda_Mj = - lambda_intros rdb metasenv subst context t args + let metasenv, lambda_Mj = + lambda_intros rdb metasenv subst context (List.length args) + (NCicTypeChecker.typeof ~metasenv ~subst context hd) in let metasenv,subst= unify true metasenv subst context hd lambda_Mj in let t = NCicReduction.whd ~subst context t in @@ -361,7 +343,7 @@ and instantiate rdb test_eq_only metasenv subst context n lc t swap = List.filter (fun (m,_) -> not (n = m)) metasenv in metasenv, subst - (*D*) in outside true; rc with exn -> outside false; raise exn + (*D*) in outside None; rc with exn -> outside (Some exn); raise exn and unify rdb test_eq_only metasenv subst context t1 t2 = (*D*) inside 'U'; try let rc = @@ -447,9 +429,10 @@ and unify rdb test_eq_only metasenv subst context t1 t2 = | _, NCic.Meta (n, _) when is_locked n subst -> (let (metasenv, subst), i = match NCicReduction.whd ~subst context t1 with - | NCic.Appl (NCic.Meta (i,l)::args) -> - let metasenv, subst, lambda_Mj = - lambda_intros rdb metasenv subst context t1 args + | NCic.Appl (NCic.Meta (i,l) as meta :: args) -> + let metasenv, lambda_Mj = + lambda_intros rdb metasenv subst context (List.length args) + (NCicTypeChecker.typeof ~metasenv ~subst context meta) in unify rdb test_eq_only metasenv subst context (C.Meta (i,l)) lambda_Mj, @@ -514,15 +497,16 @@ and unify rdb test_eq_only metasenv subst context t1 t2 = instantiate rdb test_eq_only metasenv subst context n lc (NCicReduction.head_beta_reduce ~subst t) true - | NCic.Appl (NCic.Meta (i,l)::args), _ -> - let metasenv, subst, lambda_Mj = - lambda_intros rdb metasenv subst context t1 args + | NCic.Appl (NCic.Meta (i,l) as meta :: args), _ -> + let metasenv, lambda_Mj = + lambda_intros rdb metasenv subst context (List.length args) + (NCicTypeChecker.typeof ~metasenv ~subst context meta) in let metasenv, subst = try unify rdb test_eq_only metasenv subst context (C.Meta (i,l)) lambda_Mj - with UnificationFailure msg | Uncertain msg -> + with UnificationFailure msg | Uncertain msg when not norm2-> (* failure: let's try again argument vs argument *) raise (KeepReducing msg) in @@ -536,15 +520,16 @@ and unify rdb test_eq_only metasenv subst context t1 t2 = metasenv, ((i, (name, ctx, term, ty)) :: subst) with Not_found -> assert false) - | _, NCic.Appl (NCic.Meta (i,l)::args) -> - let metasenv, subst, lambda_Mj = - lambda_intros rdb metasenv subst context t2 args + | _, NCic.Appl (NCic.Meta (i,l) as meta :: args) -> + let metasenv, lambda_Mj = + lambda_intros rdb metasenv subst context (List.length args) + (NCicTypeChecker.typeof ~metasenv ~subst context meta) in let metasenv, subst = try unify rdb test_eq_only metasenv subst context lambda_Mj (C.Meta (i,l)) - with UnificationFailure msg | Uncertain msg -> + with UnificationFailure msg | Uncertain msg when not norm1 -> (* failure: let's try again argument vs argument *) raise (KeepReducing msg) in @@ -562,15 +547,6 @@ and unify rdb test_eq_only metasenv subst context t1 t2 = | (C.Appl ((C.Const r1) as _hd1::tl1), C.Appl (C.Const r2::tl2)) when Ref.eq r1 r2 -> let relevance = NCicEnvironment.get_relevance r1 in - let relevance = match r1 with - | Ref.Ref (_,Ref.Con (_,_,lno)) -> - let relevance = - try snd (HExtlib.split_nth lno relevance) - with Failure _ -> [] - in - HExtlib.mk_list false lno @ relevance - | _ -> relevance - in let metasenv, subst, _ = try List.fold_left2 @@ -589,6 +565,7 @@ and unify rdb test_eq_only metasenv subst context t1 t2 = raise (Uncertain (mk_msg metasenv subst context t1 t2)) | UnificationFailure _ | Uncertain _ when not (norm1 && norm2) -> raise (KeepReducing (mk_msg metasenv subst context t1 t2)) + | KeepReducing _ | KeepReducingThis _ -> assert false in metasenv, subst @@ -632,7 +609,7 @@ and unify rdb test_eq_only metasenv subst context t1 t2 = else raise (UnificationFailure (mk_msg metasenv subst context t1 t2)) | _ -> raise (KeepReducing (mk_msg metasenv subst context t1 t2)) - (*D*) in outside true; rc with exn -> outside false; raise exn + (*D*) in outside None; rc with exn -> outside (Some exn); raise exn in let try_hints metasenv subst (_,t1 as mt1) (_,t2 as mt2) (* exc*) = (*D*) inside 'H'; try let rc = @@ -668,18 +645,19 @@ and unify rdb test_eq_only metasenv subst context t1 t2 = in pp(lazy("FUNZIONA!")); Some (metasenv, subst) - (*D*) in outside true; rc with exn -> outside false; raise exn + (*D*) in outside None; rc with exn -> outside (Some exn); raise exn with KeepReducing _ | UnificationFailure _ | Uncertain _ -> cand_iter tl + | KeepReducingThis _ -> assert false in cand_iter candidates - (*D*) in outside true; rc with exn -> outside false; raise exn + (*D*) in outside None; rc with exn -> outside (Some exn); raise exn in let put_in_whd m1 m2 = NCicReduction.reduce_machine ~delta:max_int ~subst context m1, NCicReduction.reduce_machine ~delta:max_int ~subst context m2 in - let fo_unif_w_hints test_eq_only metasenv subst (_,t1 as m1) (_,t2 as m2) = + let fo_unif_w_hints test_eq_only metasenv subst (xx1,t1 as m1) (xx2,t2 as m2) = try fo_unif test_eq_only metasenv subst m1 m2 with | UnificationFailure _ as exn -> raise exn @@ -771,7 +749,7 @@ and unify rdb test_eq_only metasenv subst context t1 t2 = when could_reduce (NCicReduction.unwind (fst m1)) || could_reduce (NCicReduction.unwind (fst m2)) -> raise (Uncertain msg) - (*D*) in outside true; rc with exn -> outside false; raise exn + (*D*) in outside None; rc with exn -> outside (Some exn); raise exn in try fo_unif_w_hints test_eq_only metasenv subst (false,t1) (false,t2) with @@ -784,7 +762,7 @@ and unify rdb test_eq_only metasenv subst context t1 t2 = | KeepReducing _ -> assert false) | KeepReducing _ -> assert false - (*D*) in outside true; rc with KeepReducing _ -> assert false | exn -> outside false; raise exn + (*D*) in outside None; rc with KeepReducing _ -> assert false | exn -> outside (Some exn); raise exn and delift_type_wrt_terms rdb metasenv subst context t args = let lc = List.rev args @ mk_irl (List.length context) (List.length args+1) in -- 2.39.2