From 9ebf44d84754adc5b64fcf612c6816c02c80462d Mon Sep 17 00:00:00 2001 From: Benjamin Barenblat Date: Sat, 2 Feb 2019 19:29:23 -0500 Subject: Imported Upstream version 8.9.0 --- pretyping/typing.ml | 428 +++++++++++++++++++++++++++------------------------- 1 file changed, 220 insertions(+), 208 deletions(-) (limited to 'pretyping/typing.ml') diff --git a/pretyping/typing.ml b/pretyping/typing.ml index 4c834f2f..4ba715f0 100644 --- a/pretyping/typing.ml +++ b/pretyping/typing.ml @@ -14,6 +14,7 @@ open Pp open CErrors open Util open Term +open Constr open Environ open EConstr open Vars @@ -29,113 +30,123 @@ let meta_type evd mv = let ty = try Evd.meta_ftype evd mv with Not_found -> anomaly (str "unknown meta ?" ++ str (Nameops.string_of_meta mv) ++ str ".") in - let ty = Evd.map_fl EConstr.of_constr ty in meta_instance evd ty let inductive_type_knowing_parameters env sigma (ind,u) jl = let u = Unsafe.to_instance u in let mspec = lookup_mind_specif env ind in - let paramstyp = Array.map (fun j -> lazy (EConstr.to_constr sigma j.uj_type)) jl in + let paramstyp = Array.map (fun j -> lazy (EConstr.to_constr ~abort_on_undefined_evars:false sigma j.uj_type)) jl in Inductive.type_of_inductive_knowing_parameters env (mspec,u) paramstyp -let e_type_judgment env evdref j = - match EConstr.kind !evdref (whd_all env !evdref j.uj_type) with - | Sort s -> {utj_val = j.uj_val; utj_type = ESorts.kind !evdref s } +let type_judgment env sigma j = + match EConstr.kind sigma (whd_all env sigma j.uj_type) with + | Sort s -> sigma, {utj_val = j.uj_val; utj_type = ESorts.kind sigma s } | Evar ev -> - let (evd,s) = Evardefine.define_evar_as_sort env !evdref ev in - evdref := evd; { utj_val = j.uj_val; utj_type = s } - | _ -> error_not_a_type env !evdref j - -let e_assumption_of_judgment env evdref j = - try (e_type_judgment env evdref j).utj_val + let (sigma,s) = Evardefine.define_evar_as_sort env sigma ev in + sigma, { utj_val = j.uj_val; utj_type = s } + | _ -> error_not_a_type env sigma j + +let assumption_of_judgment env sigma j = + try + let sigma, j = type_judgment env sigma j in + sigma, j.utj_val with Type_errors.TypeError _ | PretypeError _ -> - error_assumption env !evdref j + error_assumption env sigma j -let e_judge_of_applied_inductive_knowing_parameters env evdref funj ind argjv = - let rec apply_rec n typ = function +let judge_of_applied_inductive_knowing_parameters env sigma funj ind argjv = + let rec apply_rec sigma n typ = function | [] -> - { uj_val = mkApp (j_val funj, Array.map j_val argjv); - uj_type = - let ar = inductive_type_knowing_parameters env !evdref ind argjv in - hnf_prod_appvect env !evdref (EConstr.of_constr ar) (Array.map j_val argjv) } + sigma, { uj_val = mkApp (j_val funj, Array.map j_val argjv); + uj_type = + let ar = inductive_type_knowing_parameters env sigma ind argjv in + hnf_prod_appvect env sigma (EConstr.of_constr ar) (Array.map j_val argjv) } | hj::restjl -> - let (c1,c2) = - match EConstr.kind !evdref (whd_all env !evdref typ) with - | Prod (_,c1,c2) -> (c1,c2) + let sigma, (c1,c2) = + match EConstr.kind sigma (whd_all env sigma typ) with + | Prod (_,c1,c2) -> sigma, (c1,c2) | Evar ev -> - let (evd',t) = Evardefine.define_evar_as_product !evdref ev in - evdref := evd'; - let (_,c1,c2) = destProd evd' t in - (c1,c2) + let (sigma,t) = Evardefine.define_evar_as_product sigma ev in + let (_,c1,c2) = destProd sigma t in + sigma, (c1,c2) | _ -> - error_cant_apply_not_functional env !evdref funj argjv + error_cant_apply_not_functional env sigma funj argjv in - if Evarconv.e_cumul env evdref hj.uj_type c1 then - apply_rec (n+1) (subst1 hj.uj_val c2) restjl - else - error_cant_apply_bad_type env !evdref (n, c1, hj.uj_type) funj argjv + begin match Evarconv.cumul env sigma hj.uj_type c1 with + | Some sigma -> + apply_rec sigma (n+1) (subst1 hj.uj_val c2) restjl + | None -> + error_cant_apply_bad_type env sigma (n, c1, hj.uj_type) funj argjv + end in - apply_rec 1 funj.uj_type (Array.to_list argjv) + apply_rec sigma 1 funj.uj_type (Array.to_list argjv) -let e_judge_of_apply env evdref funj argjv = - let rec apply_rec n typ = function +let judge_of_apply env sigma funj argjv = + let rec apply_rec sigma n typ = function | [] -> - { uj_val = mkApp (j_val funj, Array.map j_val argjv); - uj_type = typ } + sigma, { uj_val = mkApp (j_val funj, Array.map j_val argjv); + uj_type = typ } | hj::restjl -> - let (c1,c2) = - match EConstr.kind !evdref (whd_all env !evdref typ) with - | Prod (_,c1,c2) -> (c1,c2) + let sigma, (c1,c2) = + match EConstr.kind sigma (whd_all env sigma typ) with + | Prod (_,c1,c2) -> sigma, (c1,c2) | Evar ev -> - let (evd',t) = Evardefine.define_evar_as_product !evdref ev in - evdref := evd'; - let (_,c1,c2) = destProd evd' t in - (c1,c2) + let (sigma,t) = Evardefine.define_evar_as_product sigma ev in + let (_,c1,c2) = destProd sigma t in + sigma, (c1,c2) | _ -> - error_cant_apply_not_functional env !evdref funj argjv + error_cant_apply_not_functional env sigma funj argjv in - if Evarconv.e_cumul env evdref hj.uj_type c1 then - apply_rec (n+1) (subst1 hj.uj_val c2) restjl - else - error_cant_apply_bad_type env !evdref (n, c1, hj.uj_type) funj argjv + begin match Evarconv.cumul env sigma hj.uj_type c1 with + | Some sigma -> + apply_rec sigma (n+1) (subst1 hj.uj_val c2) restjl + | None -> + error_cant_apply_bad_type env sigma (n, c1, hj.uj_type) funj argjv + end in - apply_rec 1 funj.uj_type (Array.to_list argjv) + apply_rec sigma 1 funj.uj_type (Array.to_list argjv) -let e_check_branch_types env evdref (ind,u) cj (lfj,explft) = +let check_branch_types env sigma (ind,u) cj (lfj,explft) = if not (Int.equal (Array.length lfj) (Array.length explft)) then - error_number_branches env !evdref cj (Array.length explft); - for i = 0 to Array.length explft - 1 do - if not (Evarconv.e_cumul env evdref lfj.(i).uj_type explft.(i)) then - error_ill_formed_branch env !evdref cj.uj_val ((ind,i+1),u) lfj.(i).uj_type explft.(i) - done + error_number_branches env sigma cj (Array.length explft); + Array.fold_left2_i (fun i sigma lfj explft -> + match Evarconv.cumul env sigma lfj.uj_type explft with + | Some sigma -> sigma + | None -> + error_ill_formed_branch env sigma cj.uj_val ((ind,i+1),u) lfj.uj_type explft) + sigma lfj explft let max_sort l = if Sorts.List.mem InType l then InType else if Sorts.List.mem InSet l then InSet else InProp -let e_is_correct_arity env evdref c pj ind specif params = - let arsign = make_arity_signature env !evdref true (make_ind_family (ind,params)) in +let is_correct_arity env sigma c pj ind specif params = + let arsign = make_arity_signature env sigma true (make_ind_family (ind,params)) in let allowed_sorts = elim_sorts specif in - let error () = Pretype_errors.error_elim_arity env !evdref ind allowed_sorts c pj None in - let rec srec env pt ar = - let pt' = whd_all env !evdref pt in - match EConstr.kind !evdref pt', ar with + let error () = Pretype_errors.error_elim_arity env sigma ind allowed_sorts c pj None in + let rec srec env sigma pt ar = + let pt' = whd_all env sigma pt in + match EConstr.kind sigma pt', ar with | Prod (na1,a1,t), (LocalAssum (_,a1'))::ar' -> - if not (Evarconv.e_cumul env evdref a1 a1') then error (); - srec (push_rel (LocalAssum (na1,a1)) env) t ar' + begin match Evarconv.cumul env sigma a1 a1' with + | None -> error () + | Some sigma -> + srec (push_rel (LocalAssum (na1,a1)) env) sigma t ar' + end | Sort s, [] -> - let s = ESorts.kind !evdref s in + let s = ESorts.kind sigma s in if not (Sorts.List.mem (Sorts.family s) allowed_sorts) then error () + else sigma | Evar (ev,_), [] -> - let evd, s = Evd.fresh_sort_in_family env !evdref (max_sort allowed_sorts) in - evdref := Evd.define ev (Constr.mkSort s) evd + let sigma, s = Evd.fresh_sort_in_family sigma (max_sort allowed_sorts) in + let sigma = Evd.define ev (mkSort s) sigma in + sigma | _, (LocalDef _ as d)::ar' -> - srec (push_rel d env) (lift 1 pt') ar' + srec (push_rel d env) sigma (lift 1 pt') ar' | _ -> error () in - srec env pj.uj_type (List.rev arsign) + srec env sigma pj.uj_type (List.rev arsign) let lambda_applist_assum sigma n c l = let rec app n subst t l = @@ -148,66 +159,70 @@ let lambda_applist_assum sigma n c l = | _ -> anomaly (Pp.str "Not enough lambda/let's.") in app n [] c l -let e_type_case_branches env evdref (ind,largs) pj c = +let type_case_branches env sigma (ind,largs) pj c = let specif = lookup_mind_specif env (fst ind) in let nparams = inductive_params specif in let (params,realargs) = List.chop nparams largs in let p = pj.uj_val in let params = List.map EConstr.Unsafe.to_constr params in - let () = e_is_correct_arity env evdref c pj ind specif params in - let lc = build_branches_type ind specif params (EConstr.to_constr !evdref p) in + let sigma = is_correct_arity env sigma c pj ind specif params in + let lc = build_branches_type ind specif params (EConstr.to_constr ~abort_on_undefined_evars:false sigma p) in let lc = Array.map EConstr.of_constr lc in let n = (snd specif).Declarations.mind_nrealdecls in - let ty = whd_betaiota !evdref (lambda_applist_assum !evdref (n+1) p (realargs@[c])) in - (lc, ty) + let ty = whd_betaiota sigma (lambda_applist_assum sigma (n+1) p (realargs@[c])) in + sigma, (lc, ty) -let e_judge_of_case env evdref ci pj cj lfj = +let judge_of_case env sigma ci pj cj lfj = let ((ind, u), spec) = - try find_mrectype env !evdref cj.uj_type - with Not_found -> error_case_not_inductive env !evdref cj in - let indspec = ((ind, EInstance.kind !evdref u), spec) in + try find_mrectype env sigma cj.uj_type + with Not_found -> error_case_not_inductive env sigma cj in + let indspec = ((ind, EInstance.kind sigma u), spec) in let _ = check_case_info env (fst indspec) ci in - let (bty,rslty) = e_type_case_branches env evdref indspec pj cj.uj_val in - e_check_branch_types env evdref (fst indspec) cj (lfj,bty); - { uj_val = mkCase (ci, pj.uj_val, cj.uj_val, Array.map j_val lfj); - uj_type = rslty } + let sigma, (bty,rslty) = type_case_branches env sigma indspec pj cj.uj_val in + let sigma = check_branch_types env sigma (fst indspec) cj (lfj,bty) in + sigma, { uj_val = mkCase (ci, pj.uj_val, cj.uj_val, Array.map j_val lfj); + uj_type = rslty } -let check_type_fixpoint ?loc env evdref lna lar vdefj = +let check_type_fixpoint ?loc env sigma lna lar vdefj = let lt = Array.length vdefj in - if Int.equal (Array.length lar) lt then - for i = 0 to lt-1 do - if not (Evarconv.e_cumul env evdref (vdefj.(i)).uj_type - (lift lt lar.(i))) then - error_ill_typed_rec_body ?loc env !evdref - i lna vdefj lar - done + assert (Int.equal (Array.length lar) lt); + Array.fold_left2_i (fun i sigma defj ar -> + match Evarconv.cumul env sigma defj.uj_type (lift lt ar) with + | Some sigma -> sigma + | None -> + error_ill_typed_rec_body ?loc env sigma + i lna vdefj lar) + sigma vdefj lar + (* FIXME: might depend on the level of actual parameters!*) let check_allowed_sort env sigma ind c p = - let pj = Retyping.get_judgment_of env sigma p in - let ksort = Sorts.family (ESorts.kind sigma (sort_of_arity env sigma pj.uj_type)) in let specif = Global.lookup_inductive (fst ind) in let sorts = elim_sorts specif in + let pj = Retyping.get_judgment_of env sigma p in + let _, s = splay_prod env sigma pj.uj_type in + let ksort = match EConstr.kind sigma s with + | Sort s -> Sorts.family (ESorts.kind sigma s) + | _ -> error_elim_arity env sigma ind sorts c pj None in if not (List.exists ((==) ksort) sorts) then let s = inductive_sort_family (snd specif) in error_elim_arity env sigma ind sorts c pj (Some(ksort,s,Type_errors.error_elim_explain ksort s)) -let e_judge_of_cast env evdref cj k tj = +let judge_of_cast env sigma cj k tj = let expected_type = tj.utj_val in - if not (Evarconv.e_cumul env evdref cj.uj_type expected_type) then - error_actual_type_core env !evdref cj expected_type; - { uj_val = mkCast (cj.uj_val, k, expected_type); - uj_type = expected_type } + match Evarconv.cumul env sigma cj.uj_type expected_type with + | None -> + error_actual_type_core env sigma cj expected_type; + | Some sigma -> + sigma, { uj_val = mkCast (cj.uj_val, k, expected_type); + uj_type = expected_type } -let enrich_env env evdref = - let penv = Environ.pre_env env in - let penv' = Pre_env.({ penv with env_stratification = - { penv.env_stratification with env_universes = Evd.universes !evdref } }) in - Environ.env_of_pre_env penv' +let enrich_env env sigma = + set_universes env @@ Evd.universes sigma let check_fix env sigma pfix = - let inj c = EConstr.to_constr sigma c in + let inj c = EConstr.to_constr ~abort_on_undefined_evars:false sigma c in let (idx, (ids, cs, ts)) = pfix in check_fix env (idx, (ids, Array.map inj cs, Array.map inj ts)) @@ -226,10 +241,6 @@ let judge_of_set = { uj_val = EConstr.mkSet; uj_type = EConstr.mkSort Sorts.type1 } -let judge_of_prop_contents = function - | Null -> judge_of_prop - | Pos -> judge_of_set - let judge_of_type u = let uu = Univ.Universe.super u in { uj_val = EConstr.mkType u; @@ -242,16 +253,16 @@ let judge_of_variable env id = Termops.on_judgment EConstr.of_constr (judge_of_variable env id) let judge_of_projection env sigma p cj = - let pb = lookup_projection p env in + let pty = lookup_projection p env in let (ind,u), args = try find_mrectype env sigma cj.uj_type with Not_found -> error_case_not_inductive env sigma cj in let u = EInstance.kind sigma u in - let ty = EConstr.of_constr (CVars.subst_instance_constr u pb.Declarations.proj_type) in - let ty = substl (cj.uj_val :: List.rev args) ty in - {uj_val = EConstr.mkProj (p,cj.uj_val); - uj_type = ty} + let ty = EConstr.of_constr (CVars.subst_instance_constr u pty) in + let ty = substl (cj.uj_val :: List.rev args) ty in + {uj_val = EConstr.mkProj (p,cj.uj_val); + uj_type = ty} let judge_of_abstraction env name var j = { uj_val = mkLambda (name, var.utj_val, j.uj_val); @@ -268,165 +279,166 @@ let judge_of_letin env name defj typj j = (* cstr must be in n.f. w.r.t. evars and execute returns a judgement where both the term and type are in n.f. *) -let rec execute env evdref cstr = - let cstr = whd_evar !evdref cstr in - match EConstr.kind !evdref cstr with +let rec execute env sigma cstr = + let cstr = whd_evar sigma cstr in + match EConstr.kind sigma cstr with | Meta n -> - { uj_val = cstr; uj_type = meta_type !evdref n } + sigma, { uj_val = cstr; uj_type = meta_type sigma n } | Evar ev -> - let ty = EConstr.existential_type !evdref ev in - let jty = execute env evdref ty in - let jty = e_assumption_of_judgment env evdref jty in - { uj_val = cstr; uj_type = jty } + let ty = EConstr.existential_type sigma ev in + let sigma, jty = execute env sigma ty in + let sigma, jty = assumption_of_judgment env sigma jty in + sigma, { uj_val = cstr; uj_type = jty } | Rel n -> - judge_of_relative env n + sigma, judge_of_relative env n | Var id -> - judge_of_variable env id + sigma, judge_of_variable env id | Const (c, u) -> - let u = EInstance.kind !evdref u in - make_judge cstr (EConstr.of_constr (rename_type_of_constant env (c, u))) + let u = EInstance.kind sigma u in + sigma, make_judge cstr (EConstr.of_constr (rename_type_of_constant env (c, u))) | Ind (ind, u) -> - let u = EInstance.kind !evdref u in - make_judge cstr (EConstr.of_constr (rename_type_of_inductive env (ind, u))) + let u = EInstance.kind sigma u in + sigma, make_judge cstr (EConstr.of_constr (rename_type_of_inductive env (ind, u))) | Construct (cstruct, u) -> - let u = EInstance.kind !evdref u in - make_judge cstr (EConstr.of_constr (rename_type_of_constructor env (cstruct, u))) + let u = EInstance.kind sigma u in + sigma, make_judge cstr (EConstr.of_constr (rename_type_of_constructor env (cstruct, u))) | Case (ci,p,c,lf) -> - let cj = execute env evdref c in - let pj = execute env evdref p in - let lfj = execute_array env evdref lf in - e_judge_of_case env evdref ci pj cj lfj + let sigma, cj = execute env sigma c in + let sigma, pj = execute env sigma p in + let sigma, lfj = execute_array env sigma lf in + judge_of_case env sigma ci pj cj lfj | Fix ((vn,i as vni),recdef) -> - let (_,tys,_ as recdef') = execute_recdef env evdref recdef in + let sigma, (_,tys,_ as recdef') = execute_recdef env sigma recdef in let fix = (vni,recdef') in - check_fix env !evdref fix; - make_judge (mkFix fix) tys.(i) + check_fix env sigma fix; + sigma, make_judge (mkFix fix) tys.(i) | CoFix (i,recdef) -> - let (_,tys,_ as recdef') = execute_recdef env evdref recdef in + let sigma, (_,tys,_ as recdef') = execute_recdef env sigma recdef in let cofix = (i,recdef') in - check_cofix env !evdref cofix; - make_judge (mkCoFix cofix) tys.(i) + check_cofix env sigma cofix; + sigma, make_judge (mkCoFix cofix) tys.(i) | Sort s -> - begin match ESorts.kind !evdref s with - | Prop c -> - judge_of_prop_contents c - | Type u -> - judge_of_type u + begin match ESorts.kind sigma s with + | Prop -> sigma, judge_of_prop + | Set -> sigma, judge_of_set + | Type u -> sigma, judge_of_type u end | Proj (p, c) -> - let cj = execute env evdref c in - judge_of_projection env !evdref p cj + let sigma, cj = execute env sigma c in + sigma, judge_of_projection env sigma p cj | App (f,args) -> - let jl = execute_array env evdref args in - (match EConstr.kind !evdref f with + let sigma, jl = execute_array env sigma args in + (match EConstr.kind sigma f with | Ind (ind, u) when EInstance.is_empty u && Environ.template_polymorphic_ind ind env -> - let fj = execute env evdref f in - e_judge_of_applied_inductive_knowing_parameters env evdref fj (ind, u) jl + let sigma, fj = execute env sigma f in + judge_of_applied_inductive_knowing_parameters env sigma fj (ind, u) jl | _ -> (* No template polymorphism *) - let fj = execute env evdref f in - e_judge_of_apply env evdref fj jl) + let sigma, fj = execute env sigma f in + judge_of_apply env sigma fj jl) | Lambda (name,c1,c2) -> - let j = execute env evdref c1 in - let var = e_type_judgment env evdref j in + let sigma, j = execute env sigma c1 in + let sigma, var = type_judgment env sigma j in let env1 = push_rel (LocalAssum (name, var.utj_val)) env in - let j' = execute env1 evdref c2 in - judge_of_abstraction env1 name var j' + let sigma, j' = execute env1 sigma c2 in + sigma, judge_of_abstraction env1 name var j' | Prod (name,c1,c2) -> - let j = execute env evdref c1 in - let varj = e_type_judgment env evdref j in + let sigma, j = execute env sigma c1 in + let sigma, varj = type_judgment env sigma j in let env1 = push_rel (LocalAssum (name, varj.utj_val)) env in - let j' = execute env1 evdref c2 in - let varj' = e_type_judgment env1 evdref j' in - judge_of_product env name varj varj' + let sigma, j' = execute env1 sigma c2 in + let sigma, varj' = type_judgment env1 sigma j' in + sigma, judge_of_product env name varj varj' | LetIn (name,c1,c2,c3) -> - let j1 = execute env evdref c1 in - let j2 = execute env evdref c2 in - let j2 = e_type_judgment env evdref j2 in - let _ = e_judge_of_cast env evdref j1 DEFAULTcast j2 in + let sigma, j1 = execute env sigma c1 in + let sigma, j2 = execute env sigma c2 in + let sigma, j2 = type_judgment env sigma j2 in + let sigma, _ = judge_of_cast env sigma j1 DEFAULTcast j2 in let env1 = push_rel (LocalDef (name, j1.uj_val, j2.utj_val)) env in - let j3 = execute env1 evdref c3 in - judge_of_letin env name j1 j2 j3 + let sigma, j3 = execute env1 sigma c3 in + sigma, judge_of_letin env name j1 j2 j3 | Cast (c,k,t) -> - let cj = execute env evdref c in - let tj = execute env evdref t in - let tj = e_type_judgment env evdref tj in - e_judge_of_cast env evdref cj k tj - -and execute_recdef env evdref (names,lar,vdef) = - let larj = execute_array env evdref lar in - let lara = Array.map (e_assumption_of_judgment env evdref) larj in + let sigma, cj = execute env sigma c in + let sigma, tj = execute env sigma t in + let sigma, tj = type_judgment env sigma tj in + judge_of_cast env sigma cj k tj + +and execute_recdef env sigma (names,lar,vdef) = + let sigma, larj = execute_array env sigma lar in + let sigma, lara = Array.fold_left_map (assumption_of_judgment env) sigma larj in let env1 = push_rec_types (names,lara,vdef) env in - let vdefj = execute_array env1 evdref vdef in + let sigma, vdefj = execute_array env1 sigma vdef in let vdefv = Array.map j_val vdefj in - let _ = check_type_fixpoint env1 evdref names lara vdefj in - (names,lara,vdefv) + let sigma = check_type_fixpoint env1 sigma names lara vdefj in + sigma, (names,lara,vdefv) + +and execute_array env = Array.fold_left_map (execute env) -and execute_array env evdref = Array.map (execute env evdref) +let check env sigma c t = + let env = enrich_env env sigma in + let sigma, j = execute env sigma c in + match Evarconv.cumul env sigma j.uj_type t with + | None -> + error_actual_type_core env sigma j t + | Some sigma -> sigma let e_check env evdref c t = - let env = enrich_env env evdref in - let j = execute env evdref c in - if not (Evarconv.e_cumul env evdref j.uj_type t) then - error_actual_type_core env !evdref j t + evdref := check env !evdref c t (* Type of a constr *) -let unsafe_type_of env evd c = - let evdref = ref evd in - let env = enrich_env env evdref in - let j = execute env evdref c in - j.uj_type +let unsafe_type_of env sigma c = + let env = enrich_env env sigma in + let sigma, j = execute env sigma c in + j.uj_type (* Sort of a type *) +let sort_of env sigma c = + let env = enrich_env env sigma in + let sigma, j = execute env sigma c in + let sigma, a = type_judgment env sigma j in + sigma, a.utj_type + let e_sort_of env evdref c = - let env = enrich_env env evdref in - let j = execute env evdref c in - let a = e_type_judgment env evdref j in - a.utj_type + Evarutil.evd_comb1 (sort_of env) evdref c (* Try to solve the existential variables by typing *) -let type_of ?(refresh=false) env evd c = - let evdref = ref evd in - let env = enrich_env env evdref in - let j = execute env evdref c in +let type_of ?(refresh=false) env sigma c = + let env = enrich_env env sigma in + let sigma, j = execute env sigma c in (* side-effect on evdref *) if refresh then - Evarsolve.refresh_universes ~onlyalg:true (Some false) env !evdref j.uj_type - else !evdref, j.uj_type + Evarsolve.refresh_universes ~onlyalg:true (Some false) env sigma j.uj_type + else sigma, j.uj_type -let e_type_of ?(refresh=false) env evdref c = - let env = enrich_env env evdref in - let j = execute env evdref c in +let e_type_of ?refresh env evdref c = + Evarutil.evd_comb1 (type_of ?refresh env) evdref c + +let solve_evars env sigma c = + let env = enrich_env env sigma in + let sigma, j = execute env sigma c in (* side-effect on evdref *) - if refresh then - let evd, c = Evarsolve.refresh_universes ~onlyalg:true (Some false) env !evdref j.uj_type in - let () = evdref := evd in - c - else j.uj_type + sigma, nf_evar sigma j.uj_val let e_solve_evars env evdref c = - let env = enrich_env env evdref in - let c = (execute env evdref c).uj_val in - (* side-effect on evdref *) - nf_evar !evdref c + Evarutil.evd_comb1 (solve_evars env) evdref c -let _ = Evarconv.set_solve_evars (fun env evdref c -> e_solve_evars env evdref c) +let _ = Evarconv.set_solve_evars (fun env sigma c -> solve_evars env sigma c) -- cgit v1.2.3