diff options
Diffstat (limited to 'plugins/extraction/extraction.ml')
| -rw-r--r-- | plugins/extraction/extraction.ml | 298 |
1 files changed, 139 insertions, 159 deletions
diff --git a/plugins/extraction/extraction.ml b/plugins/extraction/extraction.ml index 080512b273..a980a43f53 100644 --- a/plugins/extraction/extraction.ml +++ b/plugins/extraction/extraction.ml @@ -1,6 +1,6 @@ (************************************************************************) (* v * The Coq Proof Assistant / The Coq Development Team *) -(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015 *) +(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016 *) (* \VV/ **************************************************************) (* // * This file is distributed under the terms of the *) (* * GNU Lesser General Public License Version 2.1 *) @@ -11,7 +11,6 @@ open Util open Names open Term open Vars -open Context open Declarations open Declareops open Environ @@ -26,6 +25,7 @@ open Globnames open Miniml open Table open Mlutil +open Context.Rel.Declaration (*i*) exception I of inductive_kind @@ -35,17 +35,18 @@ let current_fixpoints = ref ([] : constant list) let none = Evd.empty +(* NB: In OCaml, [type_of] and [get_of] might raise + [SingletonInductiveBecomeProp]. This exception will be caught + in late wrappers around the exported functions of this file, + in order to display the location of the issue. *) + let type_of env c = - try - let polyprop = (lang() == Haskell) in - Retyping.get_type_of ~polyprop env none (strip_outer_cast c) - with SingletonInductiveBecomesProp id -> error_singleton_become_prop id + let polyprop = (lang() == Haskell) in + Retyping.get_type_of ~polyprop env none (strip_outer_cast c) let sort_of env c = - try - let polyprop = (lang() == Haskell) in - Retyping.get_sort_family_of ~polyprop env none (strip_outer_cast c) - with SingletonInductiveBecomesProp id -> error_singleton_become_prop id + let polyprop = (lang() == Haskell) in + Retyping.get_sort_family_of ~polyprop env none (strip_outer_cast c) (*S Generation of flags and signatures. *) @@ -73,9 +74,9 @@ type flag = info * scheme Really important function. *) let rec flag_of_type env t : flag = - let t = whd_betadeltaiota env none t in + let t = whd_all env none t in match kind_of_term t with - | Prod (x,t,c) -> flag_of_type (push_rel (x,None,t) env) c + | Prod (x,t,c) -> flag_of_type (push_rel (LocalAssum (x,t)) env) c | Sort s when Sorts.is_prop s -> (Logic,TypeScheme) | Sort _ -> (Info,TypeScheme) | _ -> if (sort_of env t) == InProp then (Logic,Default) else (Info,Default) @@ -91,7 +92,7 @@ exception NotDefault of kill_reason let check_default env t = match flag_of_type env t with | _,TypeScheme -> raise (NotDefault Ktype) - | Logic,_ -> raise (NotDefault Kother) + | Logic,_ -> raise (NotDefault Kprop) | _ -> () let is_info_scheme env t = match flag_of_type env t with @@ -101,14 +102,14 @@ let is_info_scheme env t = match flag_of_type env t with (*s [type_sign] gernerates a signature aimed at treating a type application. *) let rec type_sign env c = - match kind_of_term (whd_betadeltaiota env none c) with + match kind_of_term (whd_all env none c) with | Prod (n,t,d) -> - (if is_info_scheme env t then Keep else Kill Kother) + (if is_info_scheme env t then Keep else Kill Kprop) :: (type_sign (push_rel_assum (n,t) env) d) | _ -> [] let rec type_scheme_nb_args env c = - match kind_of_term (whd_betadeltaiota env none c) with + match kind_of_term (whd_all env none c) with | Prod (n,t,d) -> let n = type_scheme_nb_args (push_rel_assum (n,t) env) d in if is_info_scheme env t then n+1 else n @@ -134,15 +135,15 @@ let make_typvar n vl = next_ident_away id' vl let rec type_sign_vl env c = - match kind_of_term (whd_betadeltaiota env none c) with + match kind_of_term (whd_all env none c) with | Prod (n,t,d) -> let s,vl = type_sign_vl (push_rel_assum (n,t) env) d in - if not (is_info_scheme env t) then Kill Kother::s, vl + if not (is_info_scheme env t) then Kill Kprop::s, vl else Keep::s, (make_typvar n vl) :: vl | _ -> [],[] let rec nb_default_params env c = - match kind_of_term (whd_betadeltaiota env none c) with + match kind_of_term (whd_all env none c) with | Prod (n,t,d) -> let n = nb_default_params (push_rel_assum (n,t) env) d in if is_default env t then n+1 else n @@ -154,25 +155,12 @@ let sign_with_implicits r s nb_params = let implicits = implicits_of_global r in let rec add_impl i = function | [] -> [] - | sign::s -> - let sign' = - if sign == Keep && Int.List.mem i implicits - then Kill Kother else sign - in sign' :: add_impl (succ i) s + | Keep::s when Int.Set.mem i implicits -> + Kill (Kimplicit (r,i)) :: add_impl (i+1) s + | sign::s -> sign :: add_impl (i+1) s in add_impl (1+nb_params) s -(* Enriching a exception message *) - -let rec handle_exn r n fn_name = function - | MLexn s -> - (try Scanf.sscanf s "UNBOUND %d%!" - (fun i -> - assert ((0 < i) && (i <= n)); - MLexn ("IMPLICIT "^ msg_non_implicit r (n+1-i) (fn_name i))) - with Scanf.Scan_failure _ | End_of_file -> MLexn s) - | a -> ast_map (handle_exn r n fn_name) a - (*S Management of type variable contexts. *) (* A De Bruijn variable context (db) is a context for translating Coq [Rel] @@ -214,36 +202,6 @@ let parse_ind_args si args relmax = | _ -> parse (i+1) (j+1) s) in parse 1 1 si -let oib_equal o1 o2 = - Id.equal o1.mind_typename o2.mind_typename && - List.equal eq_rel_declaration o1.mind_arity_ctxt o2.mind_arity_ctxt && - begin - match o1.mind_arity, o2.mind_arity with - | RegularArity {mind_user_arity=c1; mind_sort=s1}, RegularArity {mind_user_arity=c2; mind_sort=s2} -> - eq_constr c1 c2 && Sorts.equal s1 s2 - | TemplateArity p1, TemplateArity p2 -> - let eq o1 o2 = Option.equal Univ.Level.equal o1 o2 in - List.equal eq p1.template_param_levels p2.template_param_levels && - Univ.Universe.equal p1.template_level p2.template_level - | _, _ -> false - end && - Array.equal Id.equal o1.mind_consnames o2.mind_consnames - -let eq_record x y = - Option.equal (Option.equal (fun (_, x, y) (_, x', y') -> Array.for_all2 eq_constant x x')) x y - -let mib_equal m1 m2 = - Array.equal oib_equal m1.mind_packets m1.mind_packets && - eq_record m1.mind_record m2.mind_record && - (m1.mind_finite : Decl_kinds.recursivity_kind) == m2.mind_finite && - Int.equal m1.mind_ntypes m2.mind_ntypes && - List.equal eq_named_declaration m1.mind_hyps m2.mind_hyps && - Int.equal m1.mind_nparams m2.mind_nparams && - Int.equal m1.mind_nparams_rec m2.mind_nparams_rec && - List.equal eq_rel_declaration m1.mind_params_ctxt m2.mind_params_ctxt && - (* Univ.UContext.eq *) m1.mind_universes == m2.mind_universes (** FIXME *) - (* m1.mind_universes = m2.mind_universes *) - (*S Extraction of a type. *) (* [extract_type env db c args] is used to produce an ML type from the @@ -285,13 +243,13 @@ let rec extract_type env db j c args = (match expand env mld with | Tdummy d -> Tdummy d | _ -> - let reason = if lvl == TypeScheme then Ktype else Kother in + let reason = if lvl == TypeScheme then Ktype else Kprop in Tarr (Tdummy reason, mld))) | Sort _ -> Tdummy Ktype (* The two logical cases. *) - | _ when sort_of env (applist (c, args)) == InProp -> Tdummy Kother + | _ when sort_of env (applist (c, args)) == InProp -> Tdummy Kprop | Rel n -> (match lookup_rel n env with - | (_,Some t,_) -> extract_type env db j (lift n t) args + | LocalDef (_,t,_) -> extract_type env db j (lift n t) args | _ -> (* Asks [db] a translation for [n]. *) if n > List.length db then Tunknown @@ -328,7 +286,7 @@ let rec extract_type env db j c args = | Ind ((kn,i),u) -> let s = (extract_ind env kn).ind_packets.(i).ip_sign in extract_type_app env db (IndRef (kn,i),s) args - | Case _ | Fix _ | CoFix _ -> Tunknown + | Case _ | Fix _ | CoFix _ | Proj _ -> Tunknown | _ -> assert false (*s Auxiliary function dealing with type application. @@ -371,16 +329,22 @@ and extract_type_scheme env db c p = (*S Extraction of an inductive type. *) +(* First, a version with cache *) + and extract_ind env kn = (* kn is supposed to be in long form *) let mib = Environ.lookup_mind kn env in - try - (* For a same kn, we can get various bodies due to module substitutions. - We hence check that the mib has not changed from recording - time to retrieving time. Ideally we should also check the env. *) - let (mib0,ml_ind) = lookup_ind kn in - if not (mib_equal mib mib0) then raise Not_found; - ml_ind - with Not_found -> + match lookup_ind kn mib with + | Some ml_ind -> ml_ind + | None -> + try + extract_really_ind env kn mib + with SingletonInductiveBecomesProp id -> + (* TODO : which inductive is concerned in the block ? *) + error_singleton_become_prop id (Some (IndRef (kn,0))) + +(* Then the real function *) + +and extract_really_ind env kn mib = (* First, if this inductive is aliased via a Module, we process the original inductive if possible. When at toplevel of the monolithic case, we cannot do much @@ -407,8 +371,7 @@ and extract_ind env kn = (* kn is supposed to be in long form *) let packets = Array.mapi (fun i mip -> - let (ind,u), ctx = - Universes.fresh_inductive_instance env (kn,i) in + let (_,u),_ = Universes.fresh_inductive_instance env (kn,i) in let ar = Inductive.type_of_inductive env ((mib,mip),u) in let info = (fst (flag_of_type env ar) = Info) in let s,v = if info then type_sign_vl env ar else [],[] in @@ -458,7 +421,7 @@ and extract_ind env kn = (* kn is supposed to be in long form *) if p.ip_logical then raise (I Standard); if not (Int.equal (Array.length p.ip_types) 1) then raise (I Standard); let typ = p.ip_types.(0) in - let l = List.filter (fun t -> not (isDummy (expand env t))) typ in + let l = List.filter (fun t -> not (isTdummy (expand env t))) typ in if not (keep_singleton ()) && Int.equal (List.length l) 1 && not (type_mem_kn kn (List.hd l)) then raise (I Singleton); @@ -479,7 +442,7 @@ and extract_ind env kn = (* kn is supposed to be in long form *) let mp = MutInd.modpath kn in let rec select_fields l typs = match l,typs with | [],[] -> [] - | _::l, typ::typs when isDummy (expand env typ) -> + | _::l, typ::typs when isTdummy (expand env typ) -> select_fields l typs | Anonymous::l, typ::typs -> None :: (select_fields l typs) @@ -525,7 +488,7 @@ and extract_ind env kn = (* kn is supposed to be in long form *) *) and extract_type_cons env db dbmap c i = - match kind_of_term (whd_betadeltaiota env none c) with + match kind_of_term (whd_all env none c) with | Prod (n,t,d) -> let env' = push_rel_assum (n,t) env in let db' = (try Int.Map.find i dbmap with Not_found -> 0) :: db in @@ -536,28 +499,25 @@ and extract_type_cons env db dbmap c i = (*s Recording the ML type abbreviation of a Coq type scheme constant. *) and mlt_env env r = match r with + | IndRef _ | ConstructRef _ | VarRef _ -> None | ConstRef kn -> - (try - if not (visible_con kn) then raise Not_found; - match lookup_term kn with - | Dtype (_,vl,mlt) -> Some mlt + let cb = Environ.lookup_constant kn env in + match cb.const_body with + | Undef _ | OpaqueDef _ -> None + | Def l_body -> + match lookup_typedef kn cb with + | Some _ as o -> o + | None -> + let typ = Typeops.type_of_constant_type env cb.const_type + (* FIXME not sure if we should instantiate univs here *) in + match flag_of_type env typ with + | Info,TypeScheme -> + let body = Mod_subst.force_constr l_body in + let s = type_sign env typ in + let db = db_from_sign s in + let t = extract_type_scheme env db body (List.length s) + in add_typedef kn cb t; Some t | _ -> None - with Not_found -> - let cb = Environ.lookup_constant kn env in - let typ = Typeops.type_of_constant_type env cb.const_type - (* FIXME not sure if we should instantiate univs here *) in - match cb.const_body with - | Undef _ | OpaqueDef _ -> None - | Def l_body -> - (match flag_of_type env typ with - | Info,TypeScheme -> - let body = Mod_subst.force_constr l_body in - let s,vl = type_sign_vl env typ in - let db = db_from_sign s in - let t = extract_type_scheme env db body (List.length s) - in add_term kn (Dtype (r, vl, t)); Some t - | _ -> None)) - | _ -> None and expand env = type_expand (mlt_env env) and type2signature env = type_to_signature (mlt_env env) @@ -568,16 +528,18 @@ let type_expunge_from_sign env = type_expunge_from_sign (mlt_env env) (*s Extraction of the type of a constant. *) let record_constant_type env kn opt_typ = - try - if not (visible_con kn) then raise Not_found; - lookup_type kn - with Not_found -> - let typ = match opt_typ with - | None -> Typeops.type_of_constant_type env (lookup_constant kn env).const_type - | Some typ -> typ - in let mlt = extract_type env [] 1 typ [] - in let schema = (type_maxvar mlt, mlt) - in add_type kn schema; schema + let cb = lookup_constant kn env in + match lookup_cst_type kn cb with + | Some schema -> schema + | None -> + let typ = match opt_typ with + | None -> Typeops.type_of_constant_type env cb.const_type + | Some typ -> typ + in + let mlt = extract_type env [] 1 typ [] in + let schema = (type_maxvar mlt, mlt) in + let () = add_cst_type kn cb schema in + schema (*S Extraction of a term. *) @@ -610,7 +572,7 @@ let rec extract_term env mle mlt c args = put_magic_if magic (MLlam (id, d'))) | LetIn (n, c1, t1, c2) -> let id = id_of_name n in - let env' = push_rel (Name id, Some c1, t1) env in + let env' = push_rel (LocalDef (Name id, c1, t1)) env in (* We directly push the args inside the [LetIn]. TODO: the opt_let_app flag is supposed to prevent that *) let args' = List.map (lift 1) args in @@ -628,12 +590,13 @@ let rec extract_term env mle mlt c args = with NotDefault d -> let mle' = Mlenv.push_std_type mle (Tdummy d) in ast_pop (extract_term env' mle' mlt c2 args')) - | Const (kn,u) -> - extract_cst_app env mle mlt kn u args - | Construct (cp,u) -> - extract_cons_app env mle mlt cp u args + | Const (kn,_) -> + extract_cst_app env mle mlt kn args + | Construct (cp,_) -> + extract_cons_app env mle mlt cp args | Proj (p, c) -> - extract_cst_app env mle mlt (Projection.constant p) Univ.Instance.empty (c :: args) + let term = Retyping.expand_projection env (Evd.from_env env) p c [] in + extract_term env mle mlt term args | Rel n -> (* As soon as the expected [mlt] for the head is known, *) (* we unify it with an fresh copy of the stored type of [Rel n]. *) @@ -654,7 +617,7 @@ and extract_maybe_term env mle mlt c = try check_default env (type_of env c); extract_term env mle mlt c [] with NotDefault d -> - put_magic (mlt, Tdummy d) MLdummy + put_magic (mlt, Tdummy d) (MLdummy d) (*s Generic way to deal with an application. *) @@ -681,7 +644,7 @@ and make_mlargs env e s args typs = (*s Extraction of a constant applied to arguments. *) -and extract_cst_app env mle mlt kn u args = +and extract_cst_app env mle mlt kn args = (* First, the [ml_schema] of the constant, in expanded version. *) let nb,t = record_constant_type env kn None in let schema = nb, expand env t in @@ -720,20 +683,20 @@ and extract_cst_app env mle mlt kn u args = let l,l' = List.chop (projection_arity (ConstRef kn)) mla in if not (List.is_empty l') then (List.map (fun _ -> MLexn "Proj Args") l) @ l' else mla - with e when Errors.noncritical e -> mla + with e when CErrors.noncritical e -> mla in - (* For strict languages, purely logical signatures with at least - one [Kill Kother] lead to a dummy lam. So a [MLdummy] is left + (* For strict languages, purely logical signatures lead to a dummy lam + (except when [Kill Ktype] everywhere). So a [MLdummy] is left accordingly. *) let optdummy = match sign_kind s_full with - | UnsafeLogicalSig when lang () != Haskell -> [MLdummy] + | UnsafeLogicalSig when lang () != Haskell -> [MLdummy Kprop] | _ -> [] in (* Different situations depending of the number of arguments: *) if la >= ls then (* Enough args, cleanup already done in [mla], we only add the - additionnal dummy if needed. *) + additional dummy if needed. *) put_magic_if (magic2 && not magic1) (mlapp head (optdummy @ mla)) else (* Partially applied function with some logical arg missing. @@ -747,14 +710,14 @@ and extract_cst_app env mle mlt kn u args = (*s Extraction of an inductive constructor applied to arguments. *) (* \begin{itemize} - \item In ML, contructor arguments are uncurryfied. + \item In ML, constructor arguments are uncurryfied. \item We managed to suppress logical parts inside inductive definitions, but they must appears outside (for partial applications for instance) \item We also suppressed all Coq parameters to the inductives, since they are fixed, and thus are not used for the computation. \end{itemize} *) -and extract_cons_app env mle mlt (((kn,i) as ip,j) as cp) u args = +and extract_cons_app env mle mlt (((kn,i) as ip,j) as cp) args = (* First, we build the type of the constructor, stored in small pieces. *) let mi = extract_ind env kn in let params_nb = mi.ind_nparams in @@ -825,8 +788,8 @@ and extract_case env mle ((kn,i) as ip,c,br) mlt = (* Logical singleton case: *) (* [match c with C i j k -> t] becomes [t'] *) assert (Int.equal br_size 1); - let s = iterate (fun l -> Kill Kother :: l) ni.(0) [] in - let mlt = iterate (fun t -> Tarr (Tdummy Kother, t)) ni.(0) mlt in + let s = iterate (fun l -> Kill Kprop :: l) ni.(0) [] in + let mlt = iterate (fun t -> Tarr (Tdummy Kprop, t)) ni.(0) mlt in let e = extract_maybe_term env mle mlt br.(0) in snd (case_expunge s e) end @@ -850,8 +813,7 @@ and extract_case env mle ((kn,i) as ip,c,br) mlt = let e = extract_maybe_term env mle (type_recomp (l,mlt)) br.(i) in (* We suppress dummy arguments according to signature. *) let ids,e = case_expunge s e in - let e' = handle_exn r (List.length s) (fun _ -> Anonymous) e in - (List.rev ids, Pusual r, e') + (List.rev ids, Pusual r, e) in if mi.ind_kind == Singleton then begin @@ -885,7 +847,7 @@ and extract_fix env mle i (fi,ti,ci as recd) mlt = let decomp_lams_eta_n n m env c t = let rels = fst (splay_prod_n env none n t) in - let rels = List.map (fun (id,_,c) -> (id,c)) rels in + let rels = List.map (fun (LocalAssum (id,c) | LocalDef (id,_,c)) -> (id,c)) rels in let rels',c = decompose_lam c in let d = n - m in (* we'd better keep rels' as long as possible. *) @@ -959,8 +921,6 @@ let extract_std_constant env kn body typ = let e = extract_term env mle t' c [] in (* Expunging term and type from dummy lambdas. *) let trm = term_expunge s (ids,e) in - let trm = handle_exn (ConstRef kn) n (fun i -> fst (List.nth rels (i-1))) trm - in trm, type_expunge_from_sign env s t (* Extracts the type of an axiom, honors the Extraction Implicit declaration. *) @@ -978,18 +938,20 @@ let extract_axiom env kn typ = let extract_fixpoint env vkn (fi,ti,ci) = let n = Array.length vkn in - let types = Array.make n (Tdummy Kother) - and terms = Array.make n MLdummy in + let types = Array.make n (Tdummy Kprop) + and terms = Array.make n (MLdummy Kprop) in let kns = Array.to_list vkn in current_fixpoints := kns; (* for replacing recursive calls [Rel ..] by the corresponding [Const]: *) let sub = List.rev_map mkConst kns in for i = 0 to n-1 do - if sort_of env ti.(i) != InProp then begin - let e,t = extract_std_constant env vkn.(i) (substl sub ci.(i)) ti.(i) in - terms.(i) <- e; - types.(i) <- t; - end + if sort_of env ti.(i) != InProp then + try + let e,t = extract_std_constant env vkn.(i) (substl sub ci.(i)) ti.(i) in + terms.(i) <- e; + types.(i) <- t; + with SingletonInductiveBecomesProp id -> + error_singleton_become_prop id (Some (ConstRef vkn.(i))) done; current_fixpoints := []; Dfix (Array.map (fun kn -> ConstRef kn) vkn, terms, types) @@ -1019,13 +981,17 @@ let extract_constant env kn cb = let e,t = extract_std_constant env kn c typ in Dterm (r,e,t) in - match flag_of_type env typ with + try + match flag_of_type env typ with | (Logic,TypeScheme) -> warn_log (); Dtype (r, [], Tdummy Ktype) - | (Logic,Default) -> warn_log (); Dterm (r, MLdummy, Tdummy Kother) + | (Logic,Default) -> warn_log (); Dterm (r, MLdummy Kprop, Tdummy Kprop) | (Info,TypeScheme) -> (match cb.const_body with | Undef _ -> warn_info (); mk_typ_ax () - | Def c -> mk_typ (Mod_subst.force_constr c) + | Def c -> + (match cb.const_proj with + | None -> mk_typ (Mod_subst.force_constr c) + | Some pb -> mk_typ pb.proj_body) | OpaqueDef c -> add_opaque r; if access_opaque () then @@ -1034,19 +1000,25 @@ let extract_constant env kn cb = | (Info,Default) -> (match cb.const_body with | Undef _ -> warn_info (); mk_ax () - | Def c -> mk_def (Mod_subst.force_constr c) + | Def c -> + (match cb.const_proj with + | None -> mk_def (Mod_subst.force_constr c) + | Some pb -> mk_def pb.proj_body) | OpaqueDef c -> add_opaque r; if access_opaque () then mk_def (Opaqueproof.force_proof (Environ.opaque_tables env) c) else mk_ax ()) + with SingletonInductiveBecomesProp id -> + error_singleton_become_prop id (Some (ConstRef kn)) let extract_constant_spec env kn cb = let r = ConstRef kn in let typ = Typeops.type_of_constant_type env cb.const_type in - match flag_of_type env typ with + try + match flag_of_type env typ with | (Logic, TypeScheme) -> Stype (r, [], Some (Tdummy Ktype)) - | (Logic, Default) -> Sval (r, Tdummy Kother) + | (Logic, Default) -> Sval (r, Tdummy Kprop) | (Info, TypeScheme) -> let s,vl = type_sign_vl env typ in (match cb.const_body with @@ -1059,26 +1031,34 @@ let extract_constant_spec env kn cb = | (Info, Default) -> let t = snd (record_constant_type env kn (Some typ)) in Sval (r, type_expunge env t) + with SingletonInductiveBecomesProp id -> + error_singleton_become_prop id (Some (ConstRef kn)) let extract_with_type env c = - let typ = type_of env c in - match flag_of_type env typ with + try + let typ = type_of env c in + match flag_of_type env typ with | (Info, TypeScheme) -> let s,vl = type_sign_vl env typ in let db = db_from_sign s in let t = extract_type_scheme env db c (List.length s) in Some (vl, t) | _ -> None + with SingletonInductiveBecomesProp id -> + error_singleton_become_prop id None let extract_constr env c = reset_meta_count (); - let typ = type_of env c in - match flag_of_type env typ with - | (_,TypeScheme) -> MLdummy, Tdummy Ktype - | (Logic,_) -> MLdummy, Tdummy Kother + try + let typ = type_of env c in + match flag_of_type env typ with + | (_,TypeScheme) -> MLdummy Ktype, Tdummy Ktype + | (Logic,_) -> MLdummy Kprop, Tdummy Kprop | (Info,Default) -> - let mlt = extract_type env [] 1 typ [] in - extract_term env Mlenv.empty mlt c [], mlt + let mlt = extract_type env [] 1 typ [] in + extract_term env Mlenv.empty mlt c [], mlt + with SingletonInductiveBecomesProp id -> + error_singleton_become_prop id None let extract_inductive env kn = let ind = extract_ind env kn in @@ -1089,7 +1069,7 @@ let extract_inductive env kn = | [] -> [] | t::l -> let l' = filter (succ i) l in - if isDummy (expand env t) || Int.List.mem i implicits then l' + if isTdummy (expand env t) || Int.Set.mem i implicits then l' else t::l' in filter (1+ind.ind_nparams) l in @@ -1101,11 +1081,11 @@ let extract_inductive env kn = (*s Is a [ml_decl] logical ? *) let logical_decl = function - | Dterm (_,MLdummy,Tdummy _) -> true + | Dterm (_,MLdummy _,Tdummy _) -> true | Dtype (_,[],Tdummy _) -> true | Dfix (_,av,tv) -> - (Array.for_all ((==) MLdummy) av) && - (Array.for_all isDummy tv) + (Array.for_all isMLdummy av) && + (Array.for_all isTdummy tv) | Dind (_,i) -> Array.for_all (fun ip -> ip.ip_logical) i.ind_packets | _ -> false |