diff options
Diffstat (limited to 'lib/hipe/cerl/erl_types.erl')
| -rw-r--r-- | lib/hipe/cerl/erl_types.erl | 277 |
1 files changed, 96 insertions, 181 deletions
diff --git a/lib/hipe/cerl/erl_types.erl b/lib/hipe/cerl/erl_types.erl index 47b8dc766a..5124e7238a 100644 --- a/lib/hipe/cerl/erl_types.erl +++ b/lib/hipe/cerl/erl_types.erl @@ -40,7 +40,6 @@ any_none_or_unit/1, lookup_record/3, max/2, - module_builtin_opaques/1, min/2, number_max/1, number_max/2, number_min/1, number_min/2, @@ -72,7 +71,7 @@ t_contains_opaque/1, t_contains_opaque/2, t_decorate_with_opaque/3, t_elements/1, - t_find_opaque_mismatch/2, + t_find_opaque_mismatch/3, t_find_unknown_opaque/3, t_fixnum/0, t_map/2, @@ -188,7 +187,6 @@ t_subtract_list/2, t_sup/1, t_sup/2, - t_tid/0, t_timeout/0, t_to_string/1, t_to_string/2, @@ -209,6 +207,7 @@ type_is_defined/4, record_field_diffs_to_string/2, subst_all_vars_to_any/1, + subst_all_remote/2, lift_list_to_pos_empty/1, is_opaque_type/2, is_erl_type/1, @@ -261,6 +260,8 @@ -define(TAG_IMMED1_SIZE, 4). -define(BITS, (erlang:system_info(wordsize) * 8) - ?TAG_IMMED1_SIZE). +-define(MAX_TUPLE_SIZE, (1 bsl 10)). + %%----------------------------------------------------------------------------- %% Type tags and qualifiers %% @@ -463,16 +464,6 @@ has_opaque_subtype(T) -> t_opaque_structure(?opaque(Elements)) -> t_sup([Struct || #opaque{struct = Struct} <- ordsets:to_list(Elements)]). --spec t_opaque_modules(erl_type()) -> [module()]. - -t_opaque_modules(?opaque(Elements)) -> - case ordsets:size(Elements) of - 1 -> - [#opaque{mod = Mod}] = set_to_list(Elements), - [Mod]; - _ -> throw({error, "Unexpected multiple opaque types"}) - end. - -spec t_contains_opaque(erl_type()) -> boolean(). t_contains_opaque(Type) -> @@ -529,39 +520,51 @@ list_contains_opaque(List, Opaques) -> %% The first argument of the function is the pattern and its second %% argument the type we are matching against the pattern. --spec t_find_opaque_mismatch(erl_type(), erl_type()) -> 'error' | {'ok', erl_type(), erl_type()}. +-spec t_find_opaque_mismatch(erl_type(), erl_type(), [erl_type()]) -> + 'error' | {'ok', erl_type(), erl_type()}. -t_find_opaque_mismatch(T1, T2) -> - t_find_opaque_mismatch(T1, T2, T2). +t_find_opaque_mismatch(T1, T2, Opaques) -> + t_find_opaque_mismatch(T1, T2, T2, Opaques). -t_find_opaque_mismatch(?any, _Type, _TopType) -> error; -t_find_opaque_mismatch(?none, _Type, _TopType) -> error; -t_find_opaque_mismatch(?list(T1, Tl1, _), ?list(T2, Tl2, _), TopType) -> - t_find_opaque_mismatch_ordlists([T1, Tl1], [T2, Tl2], TopType); -t_find_opaque_mismatch(_T1, ?opaque(_) = T2, TopType) -> {ok, TopType, T2}; -t_find_opaque_mismatch(?opaque(_) = T1, _T2, TopType) -> +t_find_opaque_mismatch(?any, _Type, _TopType, _Opaques) -> error; +t_find_opaque_mismatch(?none, _Type, _TopType, _Opaques) -> error; +t_find_opaque_mismatch(?list(T1, Tl1, _), ?list(T2, Tl2, _), TopType, Opaques) -> + t_find_opaque_mismatch_ordlists([T1, Tl1], [T2, Tl2], TopType, Opaques); +t_find_opaque_mismatch(T1, ?opaque(_) = T2, TopType, Opaques) -> + case is_opaque_type(T2, Opaques) of + false -> {ok, TopType, T2}; + true -> + t_find_opaque_mismatch(T1, t_opaque_structure(T2), TopType, Opaques) + end; +t_find_opaque_mismatch(?opaque(_) = T1, T2, TopType, Opaques) -> %% The generated message is somewhat misleading: - {ok, TopType, T1}; -t_find_opaque_mismatch(?product(T1), ?product(T2), TopType) -> - t_find_opaque_mismatch_ordlists(T1, T2, TopType); -t_find_opaque_mismatch(?tuple(T1, Arity, _), ?tuple(T2, Arity, _), TopType) -> - t_find_opaque_mismatch_ordlists(T1, T2, TopType); -t_find_opaque_mismatch(?tuple(_, _, _) = T1, ?tuple_set(_) = T2, TopType) -> + case is_opaque_type(T1, Opaques) of + false -> {ok, TopType, T1}; + true -> + t_find_opaque_mismatch(t_opaque_structure(T1), T2, TopType, Opaques) + end; +t_find_opaque_mismatch(?product(T1), ?product(T2), TopType, Opaques) -> + t_find_opaque_mismatch_ordlists(T1, T2, TopType, Opaques); +t_find_opaque_mismatch(?tuple(T1, Arity, _), ?tuple(T2, Arity, _), + TopType, Opaques) -> + t_find_opaque_mismatch_ordlists(T1, T2, TopType, Opaques); +t_find_opaque_mismatch(?tuple(_, _, _) = T1, ?tuple_set(_) = T2, + TopType, Opaques) -> Tuples1 = t_tuple_subtypes(T1), Tuples2 = t_tuple_subtypes(T2), - t_find_opaque_mismatch_lists(Tuples1, Tuples2, TopType); -t_find_opaque_mismatch(T1, ?union(U2), TopType) -> - t_find_opaque_mismatch_lists([T1], U2, TopType); -t_find_opaque_mismatch(_T1, _T2, _TopType) -> error. + t_find_opaque_mismatch_lists(Tuples1, Tuples2, TopType, Opaques); +t_find_opaque_mismatch(T1, ?union(U2), TopType, Opaques) -> + t_find_opaque_mismatch_lists([T1], U2, TopType, Opaques); +t_find_opaque_mismatch(_T1, _T2, _TopType, _Opaques) -> error. -t_find_opaque_mismatch_ordlists(L1, L2, TopType) -> +t_find_opaque_mismatch_ordlists(L1, L2, TopType, Opaques) -> List = lists:zipwith(fun(T1, T2) -> - t_find_opaque_mismatch(T1, T2, TopType) + t_find_opaque_mismatch(T1, T2, TopType, Opaques) end, L1, L2), t_find_opaque_mismatch_list(List). -t_find_opaque_mismatch_lists(L1, L2, _TopType) -> - List = [t_find_opaque_mismatch(T1, T2, T2) || T1 <- L1, T2 <- L2], +t_find_opaque_mismatch_lists(L1, L2, _TopType, Opaques) -> + List = [t_find_opaque_mismatch(T1, T2, T2, Opaques) || T1 <- L1, T2 <- L2], t_find_opaque_mismatch_list(List). t_find_opaque_mismatch_list([]) -> error; @@ -786,11 +789,6 @@ t_struct_from_opaque(Type, _Opaques) -> Type. list_struct_from_opaque(Types, Opaques) -> [t_struct_from_opaque(Type, Opaques) || Type <- Types]. --spec module_builtin_opaques(module()) -> [erl_type()]. - -module_builtin_opaques(Module) -> - [O || O <- all_opaque_builtins(), lists:member(Module, t_opaque_modules(O))]. - %%----------------------------------------------------------------------------- %% Remote types: these types are used for preprocessing; %% they should never reach the analysis stage. @@ -1422,7 +1420,6 @@ t_number_vals(Type) -> t_number_vals(Type, Opaques) -> do_opaque(Type, Opaques, fun number_vals/1). -number_vals(?int_set(?any)) -> unknown; number_vals(?int_set(Set)) -> set_to_list(Set); number_vals(?number(_, _)) -> unknown; number_vals(?opaque(_)) -> unknown; @@ -1758,6 +1755,8 @@ t_tuple() -> -spec t_tuple(non_neg_integer() | [erl_type()]) -> erl_type(). +t_tuple(N) when is_integer(N), N > ?MAX_TUPLE_SIZE -> + t_tuple(); t_tuple(N) when is_integer(N) -> ?tuple(lists:duplicate(N, ?any), N, ?any); t_tuple(List) -> @@ -1971,82 +1970,6 @@ t_parameterized_module() -> t_timeout() -> t_sup(t_non_neg_integer(), t_atom('infinity')). -%%----------------------------------------------------------------------------- -%% Some built-in opaque types -%% - --spec t_array() -> erl_type(). - -t_array() -> - t_opaque(array, array, [t_any()], - t_tuple([t_atom('array'), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_any(), - t_any()])). - --spec t_dict() -> erl_type(). - -t_dict() -> - t_opaque(dict, dict, [t_any(), t_any()], - t_tuple([t_atom('dict'), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_sup([t_atom('undefined'), t_tuple()]), - t_sup([t_atom('undefined'), t_tuple()])])). - --spec t_digraph() -> erl_type(). - -t_digraph() -> - t_opaque(digraph, digraph, [], - t_tuple([t_atom('digraph'), - t_sup(t_atom(), t_tid()), - t_sup(t_atom(), t_tid()), - t_sup(t_atom(), t_tid()), - t_boolean()])). - --spec t_gb_set() -> erl_type(). - -t_gb_set() -> - t_opaque(gb_sets, gb_set, [], - t_tuple([t_non_neg_integer(), t_sup(t_atom('nil'), t_tuple(3))])). - --spec t_gb_tree() -> erl_type(). - -t_gb_tree() -> - t_opaque(gb_trees, gb_tree, [], - t_tuple([t_non_neg_integer(), t_sup(t_atom('nil'), t_tuple(4))])). - --spec t_queue() -> erl_type(). - -t_queue() -> - t_opaque(queue, queue, [t_any()], t_tuple([t_list(), t_list()])). - --spec t_set() -> erl_type(). - -t_set() -> - t_opaque(sets, set, [t_any()], - t_tuple([t_atom('set'), t_non_neg_integer(), t_non_neg_integer(), - t_pos_integer(), t_non_neg_integer(), t_non_neg_integer(), - t_non_neg_integer(), - t_sup([t_atom('undefined'), t_tuple()]), - t_sup([t_atom('undefined'), t_tuple()])])). - --spec t_tid() -> erl_type(). - -t_tid() -> - t_opaque(ets, tid, [], t_integer()). - --spec all_opaque_builtins() -> [erl_type(),...]. - -all_opaque_builtins() -> - [t_array(), t_dict(), t_digraph(), t_gb_set(), - t_gb_tree(), t_queue(), t_set(), t_tid()]. - %%------------------------------------ %% ?none is allowed in products. A product of size 1 is not a product. @@ -2985,16 +2908,19 @@ inf_union(U1, U2, Opaques) -> List = [A,B,F,I,L,N,T,M,Map], inf_union_collect(List, Opaque, InfFun, [], []) end, - O1 = OpaqueFun(U1, U2, fun(E, Opaque) -> t_inf(Opaque, E, Opaques) end), - O2 = OpaqueFun(U2, U1, fun(E, Opaque) -> t_inf(E, Opaque, Opaques) end), - Union = inf_union(U1, U2, 0, [], Opaques), - t_sup([O1, O2, Union]). + {O1, ThrowList1} = + OpaqueFun(U1, U2, fun(E, Opaque) -> t_inf(Opaque, E, Opaques) end), + {O2, ThrowList2} + = OpaqueFun(U2, U1, fun(E, Opaque) -> t_inf(E, Opaque, Opaques) end), + {Union, ThrowList3} = inf_union(U1, U2, 0, [], [], Opaques), + ThrowList = lists:merge3(ThrowList1, ThrowList2, ThrowList3), + case t_sup([O1, O2, Union]) of + ?none when ThrowList =/= [] -> throw(hd(ThrowList)); + Sup -> Sup + end. inf_union_collect([], _Opaque, _InfFun, InfList, ThrowList) -> - case t_sup(InfList) of - ?none when ThrowList =/= [] -> throw(hd(lists:flatten(ThrowList))); - Sup -> Sup - end; + {t_sup(InfList), lists:usort(ThrowList)}; inf_union_collect([?none|L], Opaque, InfFun, InfList, ThrowList) -> inf_union_collect(L, Opaque, InfFun, [?none|InfList], ThrowList); inf_union_collect([E|L], Opaque, InfFun, InfList, ThrowList) -> @@ -3005,19 +2931,21 @@ inf_union_collect([E|L], Opaque, InfFun, InfList, ThrowList) -> inf_union_collect(L, Opaque, InfFun, InfList, [N|ThrowList]) end. -inf_union([?none|Left1], [?none|Left2], N, Acc, Opaques) -> - inf_union(Left1, Left2, N, [?none|Acc], Opaques); -inf_union([T1|Left1], [T2|Left2], N, Acc, Opaques) -> - case t_inf(T1, T2, Opaques) of - ?none -> inf_union(Left1, Left2, N, [?none|Acc], Opaques); - T -> inf_union(Left1, Left2, N+1, [T|Acc], Opaques) +inf_union([?none|Left1], [?none|Left2], N, Acc, ThrowList, Opaques) -> + inf_union(Left1, Left2, N, [?none|Acc], ThrowList, Opaques); +inf_union([T1|Left1], [T2|Left2], N, Acc, ThrowList, Opaques) -> + try t_inf(T1, T2, Opaques) of + ?none -> inf_union(Left1, Left2, N, [?none|Acc], ThrowList, Opaques); + T -> inf_union(Left1, Left2, N+1, [T|Acc], ThrowList, Opaques) + catch throw:N when is_integer(N) -> + inf_union(Left1, Left2, N, [?none|Acc], [N|ThrowList], Opaques) end; -inf_union([], [], N, Acc, _Opaques) -> - if N =:= 0 -> ?none; +inf_union([], [], N, Acc, ThrowList, _Opaques) -> + if N =:= 0 -> {?none, ThrowList}; N =:= 1 -> [Type] = [T || T <- Acc, T =/= ?none], - Type; - N >= 2 -> ?union(lists:reverse(Acc)) + {Type, ThrowList}; + N >= 2 -> {?union(lists:reverse(Acc)), ThrowList} end. inf_bitstr(U1, B1, U2, B2) -> @@ -3156,6 +3084,18 @@ t_subst_aux(?union(List), VarMap) -> t_subst_aux(T, _VarMap) -> T. +-spec subst_all_remote(erl_type(), erl_type()) -> erl_type(). + +subst_all_remote(Type0, Substitute) -> + Map = + fun(Type) -> + case erl_types:t_is_remote(Type) of + true -> Substitute; + false -> Type + end + end, + erl_types:t_map(Map, Type0). + %%----------------------------------------------------------------------------- %% Unification %% @@ -3284,8 +3224,8 @@ is_opaque_type2(#opaque{mod = Mod1, name = Name1, args = Args1}, Opaques) -> is_type_name(Mod, Name, Args1, Mod, Name, Args2) -> length(Args1) =:= length(Args2); -is_type_name(Mod1, Name1, Args1, Mod2, Name2, Args2) -> - is_same_type_name2(Mod1, Name1, Args1, Mod2, Name2, Args2). +is_type_name(_Mod1, _Name1, _Args1, _Mod2, _Name2, _Args2) -> + false. %% Two functions since t_unify is not symmetric. unify_tuple_set_and_tuple1(?tuple_set([{Arity, List}]), @@ -4123,15 +4063,7 @@ opaque_name(Mod, Name, Extra) -> flat_format("~s(~s)", [S, Extra]). mod_name(Mod, Name) -> - case is_obsolete_opaque_builtin(Mod, Name) of - true -> flat_format("~w", [Name]); - false -> flat_format("~w:~w", [Mod, Name]) - end. - -is_obsolete_opaque_builtin(digraph, digraph) -> true; -is_obsolete_opaque_builtin(gb_sets, gb_set) -> true; -is_obsolete_opaque_builtin(gb_trees, gb_tree) -> true; -is_obsolete_opaque_builtin(_, _) -> false. + flat_format("~w:~w", [Mod, Name]). %%============================================================================= %% @@ -4196,8 +4128,6 @@ t_from_form({type, _L, any, []}, _TypeNames, _RecDict, _VarDict) -> {t_any(), []}; t_from_form({type, _L, arity, []}, _TypeNames, _RecDict, _VarDict) -> {t_arity(), []}; -t_from_form({type, _L, array, []}, TypeNames, RecDict, VarDict) -> - builtin_type(array, t_array(), TypeNames, RecDict, VarDict); t_from_form({type, _L, atom, []}, _TypeNames, _RecDict, _VarDict) -> {t_atom(), []}; t_from_form({type, _L, binary, []}, _TypeNames, _RecDict, _VarDict) -> @@ -4219,10 +4149,6 @@ t_from_form({type, _L, byte, []}, _TypeNames, _RecDict, _VarDict) -> {t_byte(), []}; t_from_form({type, _L, char, []}, _TypeNames, _RecDict, _VarDict) -> {t_char(), []}; -t_from_form({type, _L, dict, []}, TypeNames, RecDict, VarDict) -> - builtin_type(dict, t_dict(), TypeNames, RecDict, VarDict); -t_from_form({type, _L, digraph, []}, TypeNames, RecDict, VarDict) -> - builtin_type(digraph, t_digraph(), TypeNames, RecDict, VarDict); t_from_form({type, _L, float, []}, _TypeNames, _RecDict, _VarDict) -> {t_float(), []}; t_from_form({type, _L, function, []}, _TypeNames, _RecDict, _VarDict) -> @@ -4238,10 +4164,6 @@ t_from_form({type, _L, 'fun', [{type, _, product, Domain}, Range]}, {L, R1} = list_from_form(Domain, TypeNames, RecDict, VarDict), {T, R2} = t_from_form(Range, TypeNames, RecDict, VarDict), {t_fun(L, T), R1 ++ R2}; -t_from_form({type, _L, gb_set, []}, TypeNames, RecDict, VarDict) -> - builtin_type(gb_set, t_gb_set(), TypeNames, RecDict, VarDict); -t_from_form({type, _L, gb_tree, []}, TypeNames, RecDict, VarDict) -> - builtin_type(gb_tree, t_gb_tree(), TypeNames, RecDict, VarDict); t_from_form({type, _L, identifier, []}, _TypeNames, _RecDict, _VarDict) -> {t_identifier(), []}; t_from_form({type, _L, integer, []}, _TypeNames, _RecDict, _VarDict) -> @@ -4314,8 +4236,6 @@ t_from_form({type, _L, maybe_improper_list, [Content, Termination]}, t_from_form({type, _L, product, Elements}, TypeNames, RecDict, VarDict) -> {L, R} = list_from_form(Elements, TypeNames, RecDict, VarDict), {t_product(L), R}; -t_from_form({type, _L, queue, []}, TypeNames, RecDict, VarDict) -> - builtin_type(queue, t_queue(), TypeNames, RecDict, VarDict); t_from_form({type, _L, range, [From, To]} = Type, _TypeNames, _RecDict, _VarDict) -> case {erl_eval:partial_eval(From), erl_eval:partial_eval(To)} of @@ -4327,14 +4247,10 @@ t_from_form({type, _L, record, [Name|Fields]}, TypeNames, RecDict, VarDict) -> record_from_form(Name, Fields, TypeNames, RecDict, VarDict); t_from_form({type, _L, reference, []}, _TypeNames, _RecDict, _VarDict) -> {t_reference(), []}; -t_from_form({type, _L, set, []}, TypeNames, RecDict, VarDict) -> - builtin_type(set, t_set(), TypeNames, RecDict, VarDict); t_from_form({type, _L, string, []}, _TypeNames, _RecDict, _VarDict) -> {t_string(), []}; t_from_form({type, _L, term, []}, _TypeNames, _RecDict, _VarDict) -> {t_any(), []}; -t_from_form({type, _L, tid, []}, TypeNames, RecDict, VarDict) -> - builtin_type(tid, t_tid(), TypeNames, RecDict, VarDict); t_from_form({type, _L, timeout, []}, _TypeNames, _RecDict, _VarDict) -> {t_timeout(), []}; t_from_form({type, _L, tuple, any}, _TypeNames, _RecDict, _VarDict) -> @@ -4345,7 +4261,10 @@ t_from_form({type, _L, tuple, Args}, TypeNames, RecDict, VarDict) -> t_from_form({type, _L, union, Args}, TypeNames, RecDict, VarDict) -> {L, R} = list_from_form(Args, TypeNames, RecDict, VarDict), {t_sup(L), R}; +t_from_form({user_type, _L, Name, Args}, TypeNames, RecDict, VarDict) -> + type_from_form(Name, Args, TypeNames, RecDict, VarDict); t_from_form({type, _L, Name, Args}, TypeNames, RecDict, VarDict) -> + %% Compatibility: modules compiled before Erlang/OTP 18.0. type_from_form(Name, Args, TypeNames, RecDict, VarDict); t_from_form({opaque, _L, Name, {Mod, Args, Rep}}, _TypeNames, _RecDict, _VarDict) -> @@ -4469,7 +4388,9 @@ get_mod_record([{FieldName, DeclType}|Left1], [{FieldName, ModType}|Left2], Acc) -> ModTypeNoVars = subst_all_vars_to_any(ModType), case - t_is_remote(ModTypeNoVars) orelse t_is_subtype(ModTypeNoVars, DeclType) + contains_remote(ModTypeNoVars) + orelse contains_remote(DeclType) + orelse t_is_subtype(ModTypeNoVars, DeclType) of false -> {error, FieldName}; true -> get_mod_record(Left1, Left2, [{FieldName, ModType}|Acc]) @@ -4483,6 +4404,10 @@ get_mod_record(DeclFields, [], Acc) -> get_mod_record(_, [{FieldName2, _ModType}|_], _Acc) -> {error, FieldName2}. +contains_remote(Type) -> + TypeNoRemote = subst_all_remote(Type, t_none()), + not t_is_equal(Type, TypeNoRemote). + fields_from_form([], _TypeNames, _RecDict, _VarDict) -> {[], []}; fields_from_form([{Name, Type}|Tail], TypeNames, RecDict, @@ -4583,9 +4508,12 @@ t_form_to_string({type, _L, Name, []} = T) -> try t_to_string(t_from_form(T)) catch throw:{error, _} -> atom_to_string(Name) ++ "()" end; -t_form_to_string({type, _L, Name, List}) -> +t_form_to_string({user_type, _L, Name, List}) -> flat_format("~w(~s)", - [Name, string:join(t_form_to_string_list(List), ",")]). + [Name, string:join(t_form_to_string_list(List), ",")]); +t_form_to_string({type, L, Name, List}) -> + %% Compatibility: modules compiled before Erlang/OTP 18.0. + t_form_to_string({user_type, L, Name, List}). t_form_to_string_list(List) -> t_form_to_string_list(List, []). @@ -4698,27 +4626,14 @@ do_opaque(Type, _Opaques, Pred) -> is_same_type_name(ModNameArgs, ModNameArgs) -> true; is_same_type_name({Mod, Name, Args1}, {Mod, Name, Args2}) -> all_any(Args1) orelse all_any(Args2); -is_same_type_name({Mod1, Name1, Args1}, {Mod2, Name2, Args2}) -> - is_same_type_name2(Mod1, Name1, Args1, Mod2, Name2, Args2). +is_same_type_name(_ModNameArgs1, _ModNameArgs2) -> + false. all_any([]) -> true; all_any([T|L]) -> t_is_any(T) andalso all_any(L); all_any(_) -> false. -%% Compatibility. In Erlang/OTP 17 the pre-defined opaque types -%% digraph() and so on can be used, but there are also new types such -%% as digraph:graph() with the exact same meaning. In Erlang/OTP R18.0 -%% all but the last clause can be removed. - -is_same_type_name2(digraph, digraph, [], digraph, graph, []) -> true; -is_same_type_name2(digraph, graph, [], digraph, digraph, []) -> true; -is_same_type_name2(gb_sets, gb_set, [], gb_sets, set, [_]) -> true; -is_same_type_name2(gb_sets, set, [_], gb_sets, gb_set, []) -> true; -is_same_type_name2(gb_trees, gb_tree, [], gb_trees, tree, [_, _]) -> true; -is_same_type_name2(gb_trees, tree, [_, _], gb_trees, gb_tree, []) -> true; -is_same_type_name2(_, _, _, _, _, _) -> false. - map_keys(?map(Pairs)) -> [K || {K, _} <- Pairs]. |