X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_refiner%2FnCicRefiner.ml;h=26fc593b7dde5ab15ac86a6e6b401d2c84cc380b;hb=5bc1672a263663a241ba8b0efde692b246761b6a;hp=e38842ac82c57c6c454582438a5726f6f89ba86a;hpb=1bd6b7d2637d765f11ddbd1218d63474e9d0c63b;p=helm.git diff --git a/helm/software/components/ng_refiner/nCicRefiner.ml b/helm/software/components/ng_refiner/nCicRefiner.ml index e38842ac8..26fc593b7 100644 --- a/helm/software/components/ng_refiner/nCicRefiner.ml +++ b/helm/software/components/ng_refiner/nCicRefiner.ml @@ -36,17 +36,19 @@ let wrap_exc msg = function | e -> raise e ;; -let exp_implicit metasenv context expty = +let exp_implicit ~localise metasenv context expty t = let foo x = match expty with Some t -> `WithType t | None -> x in function | `Closed -> NCicMetaSubst.mk_meta metasenv [] (foo `Term) | `Type -> NCicMetaSubst.mk_meta metasenv context (foo `Type) | `Term -> NCicMetaSubst.mk_meta metasenv context (foo `Term) + | `Vector -> + raise (RefineFailure (lazy (localise t, "A vector of implicit terms " ^ + "can only be used in argument position"))) | _ -> assert false ;; - -let check_allowed_sort_elimination hdb localise r orig = +let check_allowed_sort_elimination rdb localise r orig = let mkapp he arg = match he with | C.Appl l -> C.Appl (l @ [arg]) @@ -64,7 +66,7 @@ let check_allowed_sort_elimination hdb localise r orig = NCicMetaSubst.mk_meta metasenv ((name,C.Decl so1)::context) `Type in let metasenv, subst = - try NCicUnification.unify hdb metasenv subst context + try NCicUnification.unify rdb metasenv subst context arity2 (C.Prod (name, so1, meta)) with exc -> raise (wrap_exc (lazy (localise orig, Printf.sprintf "expected %s, found %s" (* XXX localizzare meglio *) @@ -76,7 +78,7 @@ let check_allowed_sort_elimination hdb localise r orig = | C.Sort _ (* , t ==?== C.Prod _ *) -> let metasenv, _, meta, _ = NCicMetaSubst.mk_meta metasenv [] `Type in let metasenv, subst = - try NCicUnification.unify hdb metasenv subst context + try NCicUnification.unify rdb metasenv subst context arity2 (C.Prod ("_", ind, meta)) with exc -> raise (wrap_exc (lazy (localise orig, Printf.sprintf "expected %s, found %s" (* XXX localizzare meglio *) @@ -94,28 +96,29 @@ let check_allowed_sort_elimination hdb localise r orig = aux ;; -let rec typeof hdb +let rec typeof rdb ?(localise=fun _ -> Stdpp.dummy_loc) - ~look_for_coercion metasenv subst context term expty + metasenv subst context term expty = - let force_ty skip_lambda metasenv subst context orig t infty expty = + let force_ty skip_lambda skip_appl metasenv subst context orig t infty expty = (*D*)inside 'F'; try let rc = match expty with | Some expty -> (match t with | C.Implicit _ -> assert false | C.Lambda _ when skip_lambda -> metasenv, subst, t, expty + | C.Appl _ when skip_appl -> metasenv, subst, t, expty | _ -> pp (lazy ( (NCicPp.ppterm ~metasenv ~subst ~context infty) ^ " === " ^ (NCicPp.ppterm ~metasenv ~subst:[] ~context expty))); try let metasenv, subst = - NCicUnification.unify hdb metasenv subst context infty expty + NCicUnification.unify rdb metasenv subst context infty expty in metasenv, subst, t, expty with exc -> - try_coercions hdb ~look_for_coercion ~localise + 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 @@ -145,8 +148,10 @@ let rec typeof hdb NCicPp.ppterm ~subst ~metasenv ~context t))) | C.Sort _ -> metasenv,subst,t,(C.Sort (C.Type NCicEnvironment.type0)) | C.Implicit infos -> - let metasenv,_,t,ty = exp_implicit metasenv context expty infos in - metasenv, subst, t, ty + let metasenv,_,t,ty = + exp_implicit ~localise metasenv context expty t infos + in + metasenv, subst, t, ty | C.Meta (n,l) as t -> let ty = try @@ -168,12 +173,12 @@ let rec typeof hdb | C.Prod (name,(s as orig_s),(t as orig_t)) -> let metasenv, subst, s, s1 = typeof_aux metasenv subst context None s in let metasenv, subst, s, s1 = - force_to_sort hdb ~look_for_coercion + force_to_sort rdb metasenv subst context s orig_s localise s1 in let context1 = (name,(C.Decl s))::context in let metasenv, subst, t, s2 = typeof_aux metasenv subst context1 None t in let metasenv, subst, t, s2 = - force_to_sort hdb ~look_for_coercion + force_to_sort rdb metasenv subst context1 t orig_t localise s2 in let metasenv, subst, s, t, ty = sort_of_prod localise metasenv subst @@ -192,12 +197,12 @@ let rec typeof hdb let metasenv, subst, s, ty_s = typeof_aux metasenv subst context None s in let metasenv, subst, s, _ = - force_to_sort hdb ~look_for_coercion + force_to_sort rdb metasenv subst context s orig_s localise ty_s in let (metasenv,subst), exp_ty_t = match exp_s with | Some exp_s -> - (try NCicUnification.unify hdb metasenv subst context s exp_s,exp_ty_t + (try 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 @@ -209,7 +214,7 @@ let rec typeof hdb typeof_aux metasenv subst context_for_t exp_ty_t t in if force_after then - force_ty false metasenv subst context orig + force_ty false true metasenv subst context orig (C.Lambda(n,s,t)) (C.Prod (n,s,ty_t)) expty else metasenv, subst, C.Lambda(n,s,t), C.Prod (n,s,ty_t) @@ -217,7 +222,7 @@ let rec typeof hdb let metasenv, subst, ty, ty_ty = typeof_aux metasenv subst context None ty in let metasenv, subst, ty, _ = - force_to_sort hdb ~look_for_coercion + force_to_sort rdb metasenv subst context ty orig_ty localise ty_ty in let metasenv, subst, t, _ = typeof_aux metasenv subst context (Some ty) t in @@ -228,15 +233,12 @@ let rec typeof hdb let bo_ty = NCicSubstitution.subst ~avoid_beta_redexes:true t bo_ty in 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 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 hdb ~localise ~look_for_coercion - metasenv subst context orig_he he ty_he args - in + 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 | C.Appl _ -> raise (AssertFailure (lazy "Appl of length < 2")) @@ -272,7 +274,7 @@ let rec typeof hdb let metasenv,metanoouttype,newouttype,metaoutsort = NCicMetaSubst.mk_meta metasenv context `Term in let metasenv,subst = - NCicUnification.unify hdb metasenv subst context outsort metaoutsort in + NCicUnification.unify rdb metasenv subst context outsort metaoutsort in let metasenv = List.filter (function (j,_) -> j <> metanoouttype) metasenv in let subst = @@ -286,7 +288,7 @@ let rec typeof hdb let metasenv, subst, ind, ind_ty = typeof_aux metasenv subst context None ind in let metasenv, subst = - check_allowed_sort_elimination hdb localise r orig_term metasenv subst + check_allowed_sort_elimination rdb localise r orig_term metasenv subst context ind ind_ty outsort in (* let's check if the type of branches are right *) @@ -298,12 +300,12 @@ let rec typeof hdb match expty with | None -> metasenv, subst | Some expty -> - NCicUnification.unify hdb metasenv subst context resty expty + NCicUnification.unify rdb metasenv subst context resty expty in *) - let _, metasenv, subst, pl_rev = - List.fold_left - (fun (j, metasenv, subst, branches) p -> + let _, metasenv, subst, pl = + List.fold_right + (fun p (j, metasenv, subst, branches) -> let cons = let cons = Ref.mk_constructor j r in if parameters = [] then C.Const cons @@ -319,23 +321,23 @@ let rec typeof hdb NCicPp.ppterm ~metasenv ~subst ~context ty_branch )); let metasenv, subst, p, _ = typeof_aux metasenv subst context (Some ty_branch) p in - j+1, metasenv, subst, p :: branches) - (1, metasenv, subst, []) pl + j-1, metasenv, subst, p :: branches) + pl (List.length pl, metasenv, subst, []) in let resty = C.Appl (outtype::arguments@[term]) in let resty = NCicReduction.head_beta_reduce ~subst resty in - metasenv, subst, C.Match (r, outtype, term, List.rev pl_rev),resty + metasenv, subst, C.Match (r, outtype, term, pl),resty | C.Match _ -> assert false in pp (lazy (NCicPp.ppterm ~metasenv ~subst ~context t ^ " :: "^ NCicPp.ppterm ~metasenv ~subst ~context infty )); - force_ty true metasenv subst context orig t infty expty + force_ty true true metasenv subst context orig t infty expty (*D*)in outside(); rc with exc -> outside (); raise exc in typeof_aux metasenv subst context expty term -and try_coercions hdb - ~localise ~look_for_coercion +and try_coercions rdb + ~localise metasenv subst context t orig_t infty expty perform_unification exc = (* we try with a coercion *) @@ -356,7 +358,7 @@ and try_coercions hdb NCicPp.ppterm ~metasenv ~subst ~context meta ^ " === " ^ NCicPp.ppterm ~metasenv ~subst ~context t ^ "\n")); let metasenv, subst = - NCicUnification.unify hdb metasenv subst context meta t + NCicUnification.unify rdb metasenv subst context meta t in pp (lazy ( "UNIFICATION in CTX:\n"^ NCicPp.ppcontext ~metasenv ~subst context @@ -367,7 +369,7 @@ and try_coercions hdb NCicPp.ppterm ~metasenv ~subst ~context expty ^ "\n")); let metasenv, subst = if perform_unification then - NCicUnification.unify hdb metasenv subst context newtype expty + NCicUnification.unify rdb metasenv subst context newtype expty else metasenv, subst in metasenv, subst, newterm, newtype @@ -376,16 +378,14 @@ and try_coercions hdb | NCicUnification.Uncertain _ as exc -> first exc tl in first exc - (look_for_coercion metasenv subst context infty expty) + (NCicCoercion.look_for_coercion rdb metasenv subst context infty expty) -and force_to_sort hdb - ~look_for_coercion metasenv subst context t orig_t localise ty -= +and force_to_sort rdb metasenv subst context t orig_t localise ty = match NCicReduction.whd ~subst context ty with | C.Meta (_,(0,(C.Irl 0 | C.Ctx []))) as ty -> metasenv, subst, t, ty - | C.Meta (i,(_,(C.Irl 0 | C.Ctx []))) -> - metasenv, subst, t, C.Meta(i,(0,C.Irl 0)) + | C.Meta (_i,(_,(C.Irl 0 | C.Ctx []))) -> assert false (*CSC: ??? + metasenv, subst, t, C.Meta(i,(0,C.Irl 0)) *) | C.Meta (i,(_,lc)) -> let len = match lc with C.Irl len->len | C.Ctx l->List.length l in let metasenv, subst, newmeta = @@ -396,7 +396,7 @@ and force_to_sort hdb metasenv, subst, t, C.Meta (newmeta,(0,C.Irl 0)) | C.Sort _ as ty -> metasenv, subst, t, ty | ty -> - try_coercions hdb ~localise ~look_for_coercion metasenv subst context + try_coercions rdb ~localise metasenv subst context t orig_t ty (NCic.Sort (NCic.Type NCicEnvironment.type0)) false (Uncertain (lazy (localise orig_t, "The type of " ^ NCicPp.ppterm ~metasenv ~subst ~context t @@ -424,41 +424,74 @@ and sort_of_prod (NCicPp.ppterm ~subst ~metasenv ~context y) (NCicPp.ppterm ~subst ~metasenv ~context x)))) -and eat_prods hdb - ~localise ~look_for_coercion metasenv subst context orig_he he ty_he args -= +and guess_name subst ctx ty = + let aux initial = "#" ^ String.make 1 initial in + match ty with + | C.Const (NReference.Ref (u,_)) + | C.Appl (C.Const (NReference.Ref (u,_)) :: _) -> + aux (String.sub (NUri.name_of_uri u) 0 1).[0] + | C.Prod _ -> aux 'f' + | C.Meta (n,lc) -> + (try + let _,_,t,_ = NCicUtils.lookup_subst n subst in + guess_name subst ctx (NCicSubstitution.subst_meta lc t) + with NCicUtils.Subst_not_found _ -> aux 'M') + | _ -> aux 'H' + +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 too_many_args = ref false in let rec aux metasenv subst args_so_far he ty_he = function - | []->metasenv, subst, NCicUntrusted.mk_appl he (List.rev args_so_far), ty_he + | [] -> + let res = NCicUntrusted.mk_appl he (List.rev args_so_far) in + (match NCicReduction.whd ~subst context ty_he with + NCic.Meta _ | NCic.Appl (NCic.Meta _::_) -> + too_many_args := true; + | _ -> ()); + force_ty true false metasenv subst context orig_t res ty_he expty + | NCic.Implicit `Vector::tl -> + (try + too_many_args := false; + aux metasenv subst args_so_far he ty_he tl + with + Uncertain _ + | RefineFailure _ as exc when !too_many_args <> true -> + try + aux metasenv subst args_so_far he ty_he + (NCic.Implicit `Vector :: NCic.Implicit `Term :: tl) + with + Uncertain msg | RefineFailure msg -> raise (wrap_exc msg exc)) | arg::tl -> match NCicReduction.whd ~subst context ty_he with | C.Prod (_,s,t) -> let metasenv, subst, arg, _ = - typeof hdb ~look_for_coercion ~localise + 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 hdb ~look_for_coercion ~localise + 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 - (("_",C.Decl ty_arg) :: context) `Type + ((name,C.Decl ty_arg) :: context) `Type in - let flex_prod = C.Prod ("_", ty_arg, meta) 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 hdb ~look_for_coercion ~localise metasenv subst + typeof rdb ~localise metasenv subst context flex_prod None in pp (lazy ( "UNIFICATION in CTX:\n"^ NCicPp.ppcontext ~metasenv ~subst context ^ "\nOF: " ^ NCicPp.ppterm ~metasenv ~subst ~context t ^ " === " ^ NCicPp.ppterm ~metasenv ~subst ~context flex_prod ^ "\n")); - let metasenv, subst = - try NCicUnification.unify hdb metasenv subst context t flex_prod + let metasenv, subst = + too_many_args := true; + try NCicUnification.unify rdb metasenv subst context t flex_prod with exc -> raise (wrap_exc (lazy (localise orig_he, Printf.sprintf ("The term %s has an inferred type %s, but is applied to the" ^^ " argument %s of type %s") @@ -473,13 +506,15 @@ and eat_prods hdb | C.Match (_,_,C.Meta _,_) | C.Match (_,_,C.Appl (C.Meta _ :: _),_) | C.Appl (C.Const (NReference.Ref (_, NReference.Fix _)) :: _) -> + too_many_args := true; raise (Uncertain (lazy (localise orig_he, Printf.sprintf ("The term %s is here applied to %d arguments but expects " ^^ "only %d arguments") (NCicPp.ppterm ~metasenv ~subst ~context he) (List.length args) (List.length args_so_far)))) | ty -> let metasenv, subst, newhead, newheadty = - try_coercions hdb ~localise ~look_for_coercion metasenv subst context + too_many_args := true; + try_coercions rdb ~localise metasenv subst context (NCicUntrusted.mk_appl he (List.rev args_so_far)) orig_he ty (NCic.Prod ("_",NCic.Implicit `Term,NCic.Implicit `Term)) false @@ -488,9 +523,18 @@ and eat_prods hdb "only %d arguments") (NCicPp.ppterm ~metasenv ~subst ~context he) (List.length args) (List.length args_so_far)))) in - aux metasenv subst [] newhead newheadty (arg :: tl) + too_many_args := false; + aux metasenv subst [] newhead newheadty (arg :: tl) in - aux metasenv subst [] he ty_he args + (* We need to reverse the order of the new created metas since they + are pushed on top of the metasenv in the wrong order *) + let highest_meta = NCicMetaSubst.maxmeta () in + let metasenv, subst, newhead, newheadty = + aux metasenv subst [] he ty_he args in + let metasenv_old,metasenv_new = + 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 ;; @@ -524,27 +568,25 @@ let relocalise old_localise dt t add = let undebruijnate inductive ref t rev_fl = NCicSubstitution.psubst (fun x -> x) - (HExtlib.list_mapi + (List.rev (HExtlib.list_mapi (fun (_,_,rno,_,_,_) i -> NCic.Const (if inductive then NReference.mk_fix i rno ref else NReference.mk_cofix i ref)) - rev_fl) + rev_fl)) t ;; -let typeof_obj hdb - ?(localise=fun _ -> Stdpp.dummy_loc) - ~look_for_coercion (uri,height,metasenv,subst,obj) +let typeof_obj + rdb ?(localise=fun _ -> Stdpp.dummy_loc) (uri,height,metasenv,subst,obj) = let check_type metasenv subst context (ty as orig_ty) = (* XXX fattorizza *) let metasenv, subst, ty, sort = - typeof hdb ~localise ~look_for_coercion metasenv subst context ty None + typeof rdb ~localise metasenv subst context ty None in let metasenv, subst, ty, sort = - force_to_sort hdb ~look_for_coercion - metasenv subst context ty orig_ty localise sort + force_to_sort rdb metasenv subst context ty orig_ty localise sort in metasenv, subst, ty, sort in @@ -555,9 +597,7 @@ let typeof_obj hdb match bo with | Some bo -> let metasenv, subst, bo, ty = - typeof hdb ~localise ~look_for_coercion - metasenv subst [] bo (Some ty) - in + typeof rdb ~localise metasenv subst [] bo (Some ty) in let height = (* XXX recalculate *) height in metasenv, subst, Some bo, ty, height | None -> metasenv, subst, None, ty, 0 @@ -570,7 +610,7 @@ let typeof_obj hdb List.fold_left (fun (types, metasenv, subst, fl) (relevance,name,k,ty,bo) -> let metasenv, subst, ty, _ = check_type metasenv subst [] ty in - let dbo = NCicTypeChecker.debruijn uri len [] bo in + let dbo = NCicTypeChecker.debruijn uri len [] ~subst bo in let localise = relocalise localise dbo bo in (name,C.Decl ty)::types, metasenv, subst, (relevance,name,k,ty,dbo,localise)::fl @@ -580,8 +620,7 @@ let typeof_obj hdb List.fold_left (fun (metasenv,subst,fl) (relevance,name,k,ty,dbo,localise) -> let metasenv, subst, dbo, ty = - typeof hdb ~localise ~look_for_coercion - metasenv subst types dbo (Some ty) + typeof rdb ~localise metasenv subst types dbo (Some ty) in metasenv, subst, (relevance,name,k,ty,dbo)::fl) (metasenv, subst, []) rev_fl @@ -617,8 +656,11 @@ let typeof_obj hdb 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 k_relev = + try snd (HExtlib.split_nth leftno k_relev) + with Failure _ -> k_relev in + let te = NCicTypeChecker.debruijn uri len [] ~subst te in + let metasenv, subst, te, _ = check_type metasenv subst tys 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 @@ -633,17 +675,17 @@ let typeof_obj hdb match item1,item2 with (n1,C.Decl ty1),(n2,C.Decl ty2) -> if n1 = n2 then - NCicUnification.unify hdb ~test_eq_only:true metasenv + NCicUnification.unify rdb ~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 + NCicUnification.unify rdb ~test_eq_only:true metasenv subst context ty1 ty2 in - NCicUnification.unify hdb ~test_eq_only:true metasenv + NCicUnification.unify rdb ~test_eq_only:true metasenv subst context bo1 bo2,true else (metasenv,subst),false @@ -664,11 +706,8 @@ let typeof_obj hdb 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 context te - in + with Invalid_argument "List.fold_left2" -> assert false in + let con_sort= NCicTypeChecker.typeof ~subst ~metasenv context te in (match NCicReduction.whd ~subst context con_sort, NCicReduction.whd ~subst [] ty_sort @@ -698,16 +737,29 @@ let typeof_obj hdb raise (RefineFailure (lazy (localise te, - "Non positive occurence in " ^ NUri.string_of_uri uri))) + "Non positive occurence in " ^ + NCicPp.ppterm ~metasenv ~subst ~context te))) else + let relsno = List.length itl + leftno in let te = NCicSubstitution.psubst - (fun i -> NCic.Const (NReference.reference_of_spec uri - (NReference.Ind (ind,i,leftno)))) - (List.rev (HExtlib.list_seq 0 (List.length itl))) - te - in - metasenv,subst,(k_relev,n,te)::res + (fun i -> + if i <= leftno then + NCic.Rel i + else + NCic.Const (NReference.reference_of_spec uri + (NReference.Ind (ind,relsno - i,leftno)))) + (HExtlib.list_seq 1 (relsno+1)) + te in + let te = + List.fold_right + (fun (name,decl) te -> + match decl with + NCic.Decl ty -> NCic.Prod (name,ty,te) + | NCic.Def (bo,ty) -> NCic.LetIn (name,ty,bo,te) + ) sx_context_te_rev te + in + metasenv,subst,(k_relev,n,te)::res ) cl (metasenv,subst,[]) in metasenv,subst,(it_relev,n,ty,cl)::res,i+1 @@ -716,4 +768,6 @@ let typeof_obj hdb uri, height, metasenv, subst, C.Inductive (ind, leftno, itl, attr) ;; +NCicUnification.set_refiner_typeof typeof;; + (* vim:set foldmethod=marker: *)