diff options
| -rw-r--r-- | interp/constrintern.ml | 63 | ||||
| -rw-r--r-- | test-suite/bugs/closed/5522.v | 7 | ||||
| -rw-r--r-- | test-suite/success/Cases.v | 5 |
3 files changed, 32 insertions, 43 deletions
diff --git a/interp/constrintern.ml b/interp/constrintern.ml index c916fcd88..4e76fe9aa 100644 --- a/interp/constrintern.ml +++ b/interp/constrintern.ml @@ -432,31 +432,6 @@ let intern_assumption intern lvar env nal bk ty = let env, b = intern_generalized_binder intern_type lvar env (List.hd nal) b b' t ty in env, b -let rec free_vars_of_pat il = - function - | CPatCstr (loc, c, l1, l2) -> - let il = List.fold_left free_vars_of_pat il (Option.default [] l1) in - List.fold_left free_vars_of_pat il l2 - | CPatAtom (loc, ro) -> - begin match ro with - | Some (Ident (loc, i)) -> (loc, i) :: il - | Some _ | None -> il - end - | CPatNotation (loc, n, l1, l2) -> - let il = List.fold_left free_vars_of_pat il (fst l1) in - List.fold_left (List.fold_left free_vars_of_pat) il (snd l1) - | _ -> anomaly (str "free_vars_of_pat") - -let intern_local_pattern intern lvar env p = - List.fold_left - (fun env (loc, i) -> - let bk = Default Implicit in - let ty = CHole (loc, None, Misctypes.IntroAnonymous, None) in - let n = Name i in - let env, _ = intern_assumption intern lvar env [(loc, n)] bk ty in - env) - env (free_vars_of_pat [] p) - type binder_data = | BDRawDef of (Loc.t * glob_binder) | BDPattern of @@ -490,13 +465,15 @@ let intern_local_binder_aux ?(global_level=false) intern lvar (env,bl) = functio | Some ty -> ty | None -> CHole(loc,None,Misctypes.IntroAnonymous,None) in - let env = intern_local_pattern intern lvar env p in - let cp = + let il,cp = match !intern_cases_pattern_fwd (None,env.scopes) p with - | (_, [(_, cp)]) -> cp + | (il, [(subst,cp)]) -> + if not (Id.Map.equal Id.equal subst Id.Map.empty) then + user_err_loc (loc,"",str "Unsupported nested \"as\" clause."); + il,cp | _ -> assert false in - let il = List.map snd (free_vars_of_pat [] p) in + let env = {env with ids = List.fold_right Id.Set.add il env.ids} in (env, BDPattern(loc,(cp,il),lvar,env,tyc) :: bl) let intern_generalization intern env lvar loc bk ak c = @@ -947,17 +924,6 @@ let find_remaining_scopes pl1 pl2 ref = in ((try List.firstn len_pl1 allscs with Failure _ -> simple_adjust_scopes len_pl1 allscs), simple_adjust_scopes len_pl2 (aux (impl_list,scope_list))) -let merge_subst s1 s2 = Id.Map.fold Id.Map.add s1 s2 - -let product_of_cases_patterns ids idspl = - List.fold_right (fun (ids,pl) (ids',ptaill) -> - (ids @ ids', - (* Cartesian prod of the or-pats for the nth arg and the tail args *) - List.flatten ( - List.map (fun (subst,p) -> - List.map (fun (subst',ptail) -> (merge_subst subst subst',p::ptail)) ptaill) pl))) - idspl (ids,[Id.Map.empty,[]]) - (* @return the first variable that occurs twice in a pattern naive n^2 algo *) @@ -1212,6 +1178,17 @@ let alias_of als = match als.alias_ids with *) +let merge_subst s1 s2 = Id.Map.fold Id.Map.add s1 s2 + +let product_of_cases_patterns aliases idspl = + List.fold_right (fun (ids,pl) (ids',ptaill) -> + (ids @ ids', + (* Cartesian prod of the or-pats for the nth arg and the tail args *) + List.flatten ( + List.map (fun (subst,p) -> + List.map (fun (subst',ptail) -> (merge_subst subst subst',p::ptail)) ptaill) pl))) + idspl (aliases.alias_ids,[aliases.alias_map,[]]) + let rec subst_pat_iterator y t p = match p with | RCPatAtom (_,id) -> begin match id with Some x when Id.equal x y -> t | _ -> p end @@ -1376,7 +1353,7 @@ let drop_notations_pattern looked_for = let rec intern_pat genv aliases pat = let intern_cstr_with_all_args loc c with_letin idslpl1 pl2 = let idslpl2 = List.map (intern_pat genv empty_alias) pl2 in - let (ids',pll) = product_of_cases_patterns aliases.alias_ids (idslpl1@idslpl2) in + let (ids',pll) = product_of_cases_patterns aliases (idslpl1@idslpl2) in let pl' = List.map (fun (asubst,pl) -> (asubst, PatCstr (loc,c,chop_params_pattern loc (fst c) pl with_letin,alias_of aliases))) pll in ids',pl' in @@ -1466,7 +1443,7 @@ let intern_ind_pattern genv scopes pat = let idslpl1 = List.rev_map (intern_pat genv empty_alias) expl_pl in let idslpl2 = List.map (intern_pat genv empty_alias) pl2 in (with_letin, - match product_of_cases_patterns [] (List.rev_append idslpl1 idslpl2) with + match product_of_cases_patterns empty_alias (List.rev_append idslpl1 idslpl2) with | _,[_,pl] -> (c,chop_params_pattern loc c pl with_letin) | _ -> error_bad_inductive_type loc) | x -> error_bad_inductive_type (raw_cases_pattern_expr_loc x) @@ -1796,7 +1773,7 @@ let internalize globalenv env allow_patvar (_, ntnvars as lvar) c = and intern_multiple_pattern env n (loc,pl) = let idsl_pll = List.map (intern_cases_pattern globalenv (None,env.scopes) empty_alias) pl in check_number_of_pattern loc n pl; - product_of_cases_patterns [] idsl_pll + product_of_cases_patterns empty_alias idsl_pll (* Expands a disjunction of multiple pattern *) and intern_disjunctive_multiple_pattern env loc n mpl = diff --git a/test-suite/bugs/closed/5522.v b/test-suite/bugs/closed/5522.v new file mode 100644 index 000000000..0fae9ede4 --- /dev/null +++ b/test-suite/bugs/closed/5522.v @@ -0,0 +1,7 @@ +(* Checking support for scope delimiters and as clauses in 'pat + applied to notations with binders *) + +Notation "'multifun' x .. y 'in' f" := (fun x => .. (fun y => f) .. ) + (at level 200, x binder, y binder, f at level 200). + +Check multifun '((x, y)%core as z) in (x+y,0)=z. diff --git a/test-suite/success/Cases.v b/test-suite/success/Cases.v index 49c465b6c..52fe98ac0 100644 --- a/test-suite/success/Cases.v +++ b/test-suite/success/Cases.v @@ -1868,3 +1868,8 @@ Definition transport {A} (P : A->Type) {x y : A} (p : x=y) (u : P x) : P y := Check match eq_refl 0 in _=O return O=O with eq_refl => eq_refl end. Check match niln in listn O return O=O with niln => eq_refl end. + +(* A test about nested "as" clauses *) +(* (was failing up to May 2017) *) + +Check fun x => match x with (y,z) as t as w => (y+z,t) = (0,w) end. |