diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/hipe/cerl/erl_types.erl | 557 |
1 files changed, 301 insertions, 256 deletions
diff --git a/lib/hipe/cerl/erl_types.erl b/lib/hipe/cerl/erl_types.erl index a6ee5428be..d092e3fe40 100644 --- a/lib/hipe/cerl/erl_types.erl +++ b/lib/hipe/cerl/erl_types.erl @@ -248,7 +248,8 @@ %% -define(REC_TYPE_LIMIT, 2). -%-define(REC_TYPE_LIMIT, 1). +-define(EXPAND_DEPTH, 16). +-define(EXPAND_LIMIT, 10000). -define(TUPLE_TAG_LIMIT, 5). -define(TUPLE_ARITY_LIMIT, 8). @@ -2142,8 +2143,7 @@ t_sup(Ts) -> case lists:any(fun is_any/1, Ts) of true -> ?any; false -> - R = t_sup1(Ts, []), - R + t_sup1(Ts, []) end. t_sup1([H1, H2|T], L) -> @@ -2152,17 +2152,6 @@ t_sup1([T], []) -> subst_all_vars_to_any(T); t_sup1(Ts, L) -> t_sup1(Ts++L, []). --ifdef(old). -t_sup([?any|_]) -> - ?any; -t_sup([H1, H2|T]) -> - t_sup([t_sup(H1, H2)|T]); -t_sup([H]) -> - subst_all_vars_to_any(H); -t_sup([]) -> - ?none. --endif. - -spec t_sup(erl_type(), erl_type()) -> erl_type(). t_sup(?any, _) -> ?any; @@ -3974,20 +3963,47 @@ t_from_form(Form, ExpTypes, Module, RecDict) -> module(), mod_records(), var_table()) -> erl_type(). t_from_form(Form, ExpTypes, Module, RecDict, VarDict) -> - t_from_form(Form, [], ExpTypes, Module, RecDict, VarDict). + t_from_form1(Form, [], ExpTypes, Module, RecDict, VarDict). -%% All uses of external types are replaced by none(). +%% Replace external types with with none(). -spec t_from_form_without_remote(parse_form(), type_table()) -> erl_type(). t_from_form_without_remote(Form, TypeTable) -> Module = mod, RecDict = dict:from_list([{Module, TypeTable}]), ExpTypes = replace_by_none, - t_from_form(Form, [], ExpTypes, Module, RecDict, dict:new()). + t_from_form1(Form, [], ExpTypes, Module, RecDict, dict:new()). + +%% REC_TYPE_LIMIT is used for limiting the depth of recursive types. +%% EXPAND_LIMIT is used for limiting the size of types by +%% limiting the number of elements of lists within one type form. +%% EXPAND_DEPTH is used in conjunction with EXPAND_LIMIT to make the +%% types balanced (unions will otherwise collapse to any()) by limiting +%% the depth the same way as t_limit/2 does. + +-type expand_limit() :: integer(). + +-type expand_depth() :: integer(). + +t_from_form1(Form, TypeNames, ET, M, MR, V) -> + t_from_form1(Form, TypeNames, ET, M, MR, V, ?EXPAND_DEPTH). + +t_from_form1(Form, TypeNames, ET, M, MR, V, D) -> + L = ?EXPAND_LIMIT, + {T, L1} = t_from_form(Form, TypeNames, ET, M, MR, V, D, L), + if + L1 =< 0, D > 1 -> + D1 = D div 2, + t_from_form1(Form, TypeNames, ET, M, MR, V, D1); + true -> + T + end. -spec t_from_form(parse_form(), type_names(), sets:set(mfa()) | 'replace_by_none', - module(), mod_records(), var_table()) -> erl_type(). + module(), mod_records(), var_table(), + expand_depth(), expand_limit()) + -> {erl_type(), expand_limit()}. %% If there is something wrong with parse_form() %% throw({error, io_lib:chars()} is called; @@ -3995,201 +4011,203 @@ t_from_form_without_remote(Form, TypeTable) -> %% self() ! {self(), ext_types, {RemMod, Name, ArgsLen}} %% is called, unless 'replace_by_none' is given. %% -%% It is assumed that M can be found in MR +%% It is assumed that M can be found in MR. -t_from_form({var, _L, '_'}, _TypeNames, _ET, _M, _MR, _V) -> - t_any(); -t_from_form({var, _L, Name}, _TypeNames, _ET, _M, _MR, V) -> +t_from_form(_, _TypeNames, _ET, _M, _MR, _V, D, L) when D =< 0 ; L =< 0 -> + {t_any(), L}; +t_from_form({var, _L, '_'}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_any(), L}; +t_from_form({var, _L, Name}, _TypeNames, _ET, _M, _MR, V, _D, L) -> case dict:find(Name, V) of - error -> t_var(Name); - {ok, Val} -> Val + error -> {t_var(Name), L}; + {ok, Val} -> {Val, L} end; -t_from_form({ann_type, _L, [_Var, Type]}, TypeNames, ET, M, MR, V) -> - t_from_form(Type, TypeNames, ET, M, MR, V); -t_from_form({paren_type, _L, [Type]}, TypeNames, ET, M, MR, V) -> - t_from_form(Type, TypeNames, ET, M, MR, V); +t_from_form({ann_type, _L, [_Var, Type]}, TypeNames, ET, M, MR, V, D, L) -> + t_from_form(Type, TypeNames, ET, M, MR, V, D, L); +t_from_form({paren_type, _L, [Type]}, TypeNames, ET, M, MR, V, D, L) -> + t_from_form(Type, TypeNames, ET, M, MR, V, D, L); t_from_form({remote_type, _L, [{atom, _, Module}, {atom, _, Type}, Args]}, - TypeNames, ET, M, MR, V) -> - solve_remote_type(Module, Type, Args, TypeNames, ET, M, MR, V); -t_from_form({atom, _L, Atom}, _TypeNames, _ET, _M, _MR, _V) -> - t_atom(Atom); -t_from_form({integer, _L, Int}, _TypeNames, _ET, _M, _MR, _V) -> - t_integer(Int); -t_from_form({op, _L, _Op, _Arg} = Op, _TypeNames, _ET, _M, _MR, _V) -> + TypeNames, ET, M, MR, V, D, L) -> + remote_from_form(Module, Type, Args, TypeNames, ET, M, MR, V, D, L); +t_from_form({atom, _L, Atom}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_atom(Atom), L}; +t_from_form({integer, _L, Int}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_integer(Int), L}; +t_from_form({op, _L, _Op, _Arg} = Op, _TypeNames, _ET, _M, _MR, _V, _D, L) -> case erl_eval:partial_eval(Op) of {integer, _, Val} -> - t_integer(Val); + {t_integer(Val), L}; _ -> throw({error, io_lib:format("Unable to evaluate type ~w\n", [Op])}) end; t_from_form({op, _L, _Op, _Arg1, _Arg2} = Op, _TypeNames, - _ET, _M, _MR, _V) -> + _ET, _M, _MR, _V, _D, L) -> case erl_eval:partial_eval(Op) of {integer, _, Val} -> - t_integer(Val); + {t_integer(Val), L}; _ -> throw({error, io_lib:format("Unable to evaluate type ~w\n", [Op])}) end; -t_from_form({type, _L, any, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_any(); -t_from_form({type, _L, arity, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_arity(); -t_from_form({type, _L, atom, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_atom(); -t_from_form({type, _L, binary, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_binary(); +t_from_form({type, _L, any, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_any(), L}; +t_from_form({type, _L, arity, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_arity(), L}; +t_from_form({type, _L, atom, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_atom(), L}; +t_from_form({type, _L, binary, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_binary(), L}; t_from_form({type, _L, binary, [Base, Unit]} = Type, - _TypeNames, _ET, _M, _MR, _V) -> + _TypeNames, _ET, _M, _MR, _V, _D, L) -> case {erl_eval:partial_eval(Base), erl_eval:partial_eval(Unit)} of {{integer, _, B}, {integer, _, U}} when B >= 0, U >= 0 -> - t_bitstr(U, B); + {t_bitstr(U, B), L}; _ -> throw({error, io_lib:format("Unable to evaluate type ~w\n", [Type])}) end; -t_from_form({type, _L, bitstring, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_bitstr(); -t_from_form({type, _L, bool, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_boolean(); % XXX: Temporarily -t_from_form({type, _L, boolean, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_boolean(); -t_from_form({type, _L, byte, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_byte(); -t_from_form({type, _L, char, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_char(); -t_from_form({type, _L, float, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_float(); -t_from_form({type, _L, function, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_fun(); -t_from_form({type, _L, 'fun', []}, _TypeNames, _ET, _M, _MR, _V) -> - t_fun(); +t_from_form({type, _L, bitstring, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_bitstr(), L}; +t_from_form({type, _L, bool, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_boolean(), L}; % XXX: Temporarily +t_from_form({type, _L, boolean, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_boolean(), L}; +t_from_form({type, _L, byte, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_byte(), L}; +t_from_form({type, _L, char, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_char(), L}; +t_from_form({type, _L, float, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_float(), L}; +t_from_form({type, _L, function, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_fun(), L}; +t_from_form({type, _L, 'fun', []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_fun(), L}; t_from_form({type, _L, 'fun', [{type, _, any}, Range]}, TypeNames, - ET, M, MR, V) -> - T = t_from_form(Range, TypeNames, ET, M, MR, V), - t_fun(T); + ET, M, MR, V, D, L) -> + {T, L1} = t_from_form(Range, TypeNames, ET, M, MR, V, D - 1, L - 1), + {t_fun(T), L1}; t_from_form({type, _L, 'fun', [{type, _, product, Domain}, Range]}, - TypeNames, ET, M, MR, V) -> - L = t_list_from_form(Domain, TypeNames, ET, M, MR, V), - T = t_from_form(Range, TypeNames, ET, M, MR, V), - t_fun(L, T); -t_from_form({type, _L, identifier, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_identifier(); -t_from_form({type, _L, integer, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_integer(); -t_from_form({type, _L, iodata, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_iodata(); -t_from_form({type, _L, iolist, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_iolist(); -t_from_form({type, _L, list, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_list(); -t_from_form({type, _L, list, [Type]}, TypeNames, ET, M, MR, V) -> - T = t_from_form(Type, TypeNames, ET, M, MR, V), - t_list(T); -t_from_form({type, _L, map, _}, TypeNames, ET, M, MR, V) -> - builtin_type(map, t_map([]), TypeNames, ET, M, MR, V); -t_from_form({type, _L, mfa, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_mfa(); -t_from_form({type, _L, module, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_module(); -t_from_form({type, _L, nil, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_nil(); -t_from_form({type, _L, neg_integer, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_neg_integer(); + TypeNames, ET, M, MR, V, D, L) -> + {Dom1, L1} = list_from_form(Domain, TypeNames, ET, M, MR, V, D, L), + {Ran1, L2} = t_from_form(Range, TypeNames, ET, M, MR, V, D - 1, L1), + {t_fun(Dom1, Ran1), L2}; +t_from_form({type, _L, identifier, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_identifier(), L}; +t_from_form({type, _L, integer, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_integer(), L}; +t_from_form({type, _L, iodata, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_iodata(), L}; +t_from_form({type, _L, iolist, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_iolist(), L}; +t_from_form({type, _L, list, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_list(), L}; +t_from_form({type, _L, list, [Type]}, TypeNames, ET, M, MR, V, D, L) -> + {T, L1} = t_from_form(Type, TypeNames, ET, M, MR, V, D - 1, L - 1), + {t_list(T), L1}; +t_from_form({type, _L, map, _}, TypeNames, ET, M, MR, V, D, L) -> + builtin_type(map, t_map([]), TypeNames, ET, M, MR, V, D, L); +t_from_form({type, _L, mfa, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_mfa(), L}; +t_from_form({type, _L, module, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_module(), L}; +t_from_form({type, _L, nil, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_nil(), L}; +t_from_form({type, _L, neg_integer, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_neg_integer(), L}; t_from_form({type, _L, non_neg_integer, []}, _TypeNames, _ET, _M, _MR, - _V) -> - t_non_neg_integer(); -t_from_form({type, _L, no_return, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_unit(); -t_from_form({type, _L, node, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_node(); -t_from_form({type, _L, none, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_none(); -t_from_form({type, _L, nonempty_list, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_nonempty_list(); -t_from_form({type, _L, nonempty_list, [Type]}, TypeNames, ET, M, MR, V) -> - T = t_from_form(Type, TypeNames, ET, M, MR, V), - t_nonempty_list(T); + _V, _D, L) -> + {t_non_neg_integer(), L}; +t_from_form({type, _L, no_return, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_unit(), L}; +t_from_form({type, _L, node, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_node(), L}; +t_from_form({type, _L, none, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_none(), L}; +t_from_form({type, _L, nonempty_list, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_nonempty_list(), L}; +t_from_form({type, _L, nonempty_list, [Type]}, TypeNames, ET, M, MR, V, D, L) -> + {T, L1} = t_from_form(Type, TypeNames, ET, M, MR, V, D, L - 1), + {t_nonempty_list(T), L1}; t_from_form({type, _L, nonempty_improper_list, [Cont, Term]}, TypeNames, - ET, M, MR, V) -> - T1 = t_from_form(Cont, TypeNames, ET, M, MR, V), - T2 = t_from_form(Term, TypeNames, ET, M, MR, V), - t_cons(T1, T2); + ET, M, MR, V, D, L) -> + {T1, L1} = t_from_form(Cont, TypeNames, ET, M, MR, V, D, L - 1), + {T2, L2} = t_from_form(Term, TypeNames, ET, M, MR, V, D, L1), + {t_cons(T1, T2), L2}; t_from_form({type, _L, nonempty_maybe_improper_list, []}, _TypeNames, - _ET, _M, _MR, _V) -> - t_cons(?any, ?any); + _ET, _M, _MR, _V, _D, L) -> + {t_cons(?any, ?any), L}; t_from_form({type, _L, nonempty_maybe_improper_list, [Cont, Term]}, - TypeNames, ET, M, MR, V) -> - T1 = t_from_form(Cont, TypeNames, ET, M, MR, V), - T2 = t_from_form(Term, TypeNames, ET, M, MR, V), - t_cons(T1, T2); -t_from_form({type, _L, nonempty_string, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_nonempty_string(); -t_from_form({type, _L, number, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_number(); -t_from_form({type, _L, pid, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_pid(); -t_from_form({type, _L, port, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_port(); -t_from_form({type, _L, pos_integer, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_pos_integer(); + TypeNames, ET, M, MR, V, D, L) -> + {T1, L1} = t_from_form(Cont, TypeNames, ET, M, MR, V, D, L - 1), + {T2, L2} = t_from_form(Term, TypeNames, ET, M, MR, V, D, L1), + {t_cons(T1, T2), L2}; +t_from_form({type, _L, nonempty_string, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_nonempty_string(), L}; +t_from_form({type, _L, number, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_number(), L}; +t_from_form({type, _L, pid, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_pid(), L}; +t_from_form({type, _L, port, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_port(), L}; +t_from_form({type, _L, pos_integer, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_pos_integer(), L}; t_from_form({type, _L, maybe_improper_list, []}, _TypeNames, - _ET, _M, _MR, _V) -> - t_maybe_improper_list(); + _ET, _M, _MR, _V, _D, L) -> + {t_maybe_improper_list(), L}; t_from_form({type, _L, maybe_improper_list, [Content, Termination]}, - TypeNames, ET, M, MR, V) -> - T1 = t_from_form(Content, TypeNames, ET, M, MR, V), - T2 = t_from_form(Termination, TypeNames, ET, M, MR, V), - t_maybe_improper_list(T1, T2); -t_from_form({type, _L, product, Elements}, TypeNames, ET, M, MR, V) -> - L = t_list_from_form(Elements, TypeNames, ET, M, MR, V), - t_product(L); + TypeNames, ET, M, MR, V, D, L) -> + {T1, L1} = t_from_form(Content, TypeNames, ET, M, MR, V, D, L - 1), + {T2, L2} = t_from_form(Termination, TypeNames, ET, M, MR, V, D, L1), + {t_maybe_improper_list(T1, T2), L2}; +t_from_form({type, _L, product, Elements}, TypeNames, ET, M, MR, V, D, L) -> + {Lst, L1} = list_from_form(Elements, TypeNames, ET, M, MR, V, D - 1, L), + {t_product(Lst), L1}; t_from_form({type, _L, range, [From, To]} = Type, - _TypeNames, _ET, _M, _MR, _V) -> + _TypeNames, _ET, _M, _MR, _V, _D, L) -> case {erl_eval:partial_eval(From), erl_eval:partial_eval(To)} of {{integer, _, FromVal}, {integer, _, ToVal}} -> - t_from_range(FromVal, ToVal); + {t_from_range(FromVal, ToVal), L}; _ -> throw({error, io_lib:format("Unable to evaluate type ~w\n", [Type])}) end; -t_from_form({type, _L, record, [Name|Fields]}, TypeNames, ET, M, MR, V) -> - record_from_form(Name, Fields, TypeNames, ET, M, MR, V); -t_from_form({type, _L, reference, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_reference(); -t_from_form({type, _L, string, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_string(); -t_from_form({type, _L, term, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_any(); -t_from_form({type, _L, timeout, []}, _TypeNames, _ET, _M, _MR, _V) -> - t_timeout(); -t_from_form({type, _L, tuple, any}, _TypeNames, _ET, _M, _MR, _V) -> - t_tuple(); -t_from_form({type, _L, tuple, Args}, TypeNames, ET, M, MR, V) -> - L = t_list_from_form(Args, TypeNames, ET, M, MR, V), - t_tuple(L); -t_from_form({type, _L, union, Args}, TypeNames, ET, M, MR, V) -> - L = t_list_from_form(Args, TypeNames, ET, M, MR, V), - t_sup(L); -t_from_form({user_type, _L, Name, Args}, TypeNames, ET, M, MR, V) -> - type_from_form(Name, Args, TypeNames, ET, M, MR, V); -t_from_form({type, _L, Name, Args}, TypeNames, ET, M, MR, V) -> +t_from_form({type, _L, record, [Name|Fields]}, TypeNames, ET, M, MR, V, D, L) -> + record_from_form(Name, Fields, TypeNames, ET, M, MR, V, D, L); +t_from_form({type, _L, reference, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_reference(), L}; +t_from_form({type, _L, string, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_string(), L}; +t_from_form({type, _L, term, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_any(), L}; +t_from_form({type, _L, timeout, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_timeout(), L}; +t_from_form({type, _L, tuple, any}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_tuple(), L}; +t_from_form({type, _L, tuple, Args}, TypeNames, ET, M, MR, V, D, L) -> + {Lst, L1} = list_from_form(Args, TypeNames, ET, M, MR, V, D - 1, L), + {t_tuple(Lst), L1}; +t_from_form({type, _L, union, Args}, TypeNames, ET, M, MR, V, D, L) -> + {Lst, L1} = list_from_form(Args, TypeNames, ET, M, MR, V, D, L), + {t_sup(Lst), L1}; +t_from_form({user_type, _L, Name, Args}, TypeNames, ET, M, MR, V, D, L) -> + type_from_form(Name, Args, TypeNames, ET, M, MR, V, D, L); +t_from_form({type, _L, Name, Args}, TypeNames, ET, M, MR, V, D, L) -> %% Compatibility: modules compiled before Erlang/OTP 18.0. - type_from_form(Name, Args, TypeNames, ET, M, MR, V); + type_from_form(Name, Args, TypeNames, ET, M, MR, V, D, L); t_from_form({opaque, _L, Name, {Mod, Args, Rep}}, _TypeNames, - _ET, _M, _MR, _V) -> + _ET, _M, _MR, _V, _D, L) -> %% XXX. To be removed. - t_opaque(Mod, Name, Args, Rep). + {t_opaque(Mod, Name, Args, Rep), L}. -builtin_type(Name, Type, TypeNames, ET, M, MR, V) -> +builtin_type(Name, Type, TypeNames, ET, M, MR, V, D, L) -> case dict:find(M, MR) of {ok, R} -> case lookup_type(Name, 0, R) of {_, {_M, _T, _A}} -> - type_from_form(Name, [], TypeNames, ET, M, MR, V); + type_from_form(Name, [], TypeNames, ET, M, MR, V, D, L); error -> - Type + {Type, L} end; error -> - Type + {Type, L} end. -type_from_form(Name, Args, TypeNames, ET, M, MR, V) -> +type_from_form(Name, Args, TypeNames, ET, M, MR, V, D, L) -> ArgsLen = length(Args), - ArgTypes = forms_to_types(Args, TypeNames, ET, M, MR, V), + {ArgTypes, L1} = list_from_form(Args, TypeNames, ET, M, MR, V, D, L), {ok, R} = dict:find(M, MR), case lookup_type(Name, ArgsLen, R) of {type, {Module, Type, ArgNames}} -> @@ -4198,154 +4216,180 @@ type_from_form(Name, Args, TypeNames, ET, M, MR, V) -> true -> List = lists:zip(ArgNames, ArgTypes), TmpV = dict:from_list(List), - t_from_form(Type, [TypeName|TypeNames], ET, M, MR, TmpV); + t_from_form(Type, [TypeName|TypeNames], ET, M, MR, TmpV, D, L1); false -> - t_any() + {t_any(), L1} end; {opaque, {Module, Type, ArgNames}} -> TypeName = {opaque, Module, Name, ArgsLen}, % 'type' would do... - Rep = + {Rep, L3} = case can_unfold_more(TypeName, TypeNames) of true -> List = lists:zip(ArgNames, ArgTypes), TmpV = dict:from_list(List), - t_from_form(Type, [TypeName|TypeNames], ET, M, MR, TmpV); - false -> t_any() + t_from_form(Type, [TypeName|TypeNames], ET, M, MR, TmpV, D, L1); + false -> {t_any(), L1} end, Args2 = [subst_all_vars_to_any(ArgType) || ArgType <- ArgTypes], - skip_opaque_alias(Rep, Module, Name, Args2); + {skip_opaque_alias(Rep, Module, Name, Args2), L3}; error -> Msg = io_lib:format("Unable to find type ~w/~w\n", [Name, ArgsLen]), throw({error, Msg}) end. -forms_to_types(Forms, TypeNames, ET, M, MR, V) -> - t_list_from_form(Forms, TypeNames, ET, M, MR, V). - skip_opaque_alias(?opaque(_) = T, _Mod, _Name, _Args) -> T; skip_opaque_alias(T, Module, Name, Args) -> t_opaque(Module, Name, Args, T). -solve_remote_type(RemMod, Name, Args, TypeNames, ET, M, MR, V) -> - ArgTypes = t_list_from_form(Args, TypeNames, ET, M, MR, V), - ArgsLen = length(Args), - RemType = {type, RemMod, Name, ArgsLen}, - case dict:find(RemMod, MR) of - error when ET =:= replace_by_none -> - t_none(); - error -> - self() ! {self(), ext_types, {RemMod, Name, ArgsLen}}, - t_any(); - {ok, RemDict} -> - MFA = {RemMod, Name, ArgsLen}, - case sets:is_element(MFA, ET) of - true -> - case lookup_type(Name, ArgsLen, RemDict) of - {type, {_Mod, Type, ArgNames}} -> - case can_unfold_more(RemType, TypeNames) of - true -> +remote_from_form(RemMod, Name, Args, TypeNames, ET, M, MR, V, D, L) -> + {ArgTypes, L1} = list_from_form(Args, TypeNames, ET, M, MR, V, D, L), + if + ET =:= replace_by_none -> + {t_none(), L1}; + true -> + ArgsLen = length(Args), + RemType = {type, RemMod, Name, ArgsLen}, + case dict:find(RemMod, MR) of + error -> + self() ! {self(), ext_types, {RemMod, Name, ArgsLen}}, + {t_any(), L1}; + {ok, RemDict} -> + MFA = {RemMod, Name, ArgsLen}, + case sets:is_element(MFA, ET) of + true -> + case lookup_type(Name, ArgsLen, RemDict) of + {type, {_Mod, Type, ArgNames}} -> + case can_unfold_more(RemType, TypeNames) of + true -> + List = lists:zip(ArgNames, ArgTypes), + TmpVarDict = dict:from_list(List), + NewTypeNames = [RemType|TypeNames], + t_from_form(Type, NewTypeNames, ET, + RemMod, MR, TmpVarDict, D, L1); + false -> + {t_any(), L1} + end; + {opaque, {Mod, Type, ArgNames}} -> List = lists:zip(ArgNames, ArgTypes), TmpVarDict = dict:from_list(List), - NewTypeNames = [RemType|TypeNames], - t_from_form(Type, NewTypeNames, ET, - RemMod, MR, TmpVarDict); - false -> - t_any() + {NewRep, L2} = + case can_unfold_more(RemType, TypeNames) of + true -> + NewTypeNames = [RemType|TypeNames], + t_from_form(Type, NewTypeNames, ET, + RemMod, MR, TmpVarDict, D, L1); + false -> + {t_any(), L1} + end, + {skip_opaque_alias(NewRep, Mod, Name, ArgTypes), L2}; + error -> + Msg = io_lib:format("Unable to find remote type ~w:~w()\n", + [RemMod, Name]), + throw({error, Msg}) end; - {opaque, {Mod, Type, ArgNames}} -> - List = lists:zip(ArgNames, ArgTypes), - TmpVarDict = dict:from_list(List), - NewRep = - case can_unfold_more(RemType, TypeNames) of - true -> - NewTypeNames = [RemType|TypeNames], - t_from_form(Type, NewTypeNames, ET, - RemMod, MR, TmpVarDict); - false -> - t_any() - end, - skip_opaque_alias(NewRep, Mod, Name, ArgTypes); - error -> - Msg = io_lib:format("Unable to find remote type ~w:~w()\n", - [RemMod, Name]), - throw({error, Msg}) - end; - false when ET =:= replace_by_none -> - t_none(); - false -> - self() ! {self(), ext_types, {RemMod, Name, ArgsLen}}, - t_any() + false -> + self() ! {self(), ext_types, {RemMod, Name, ArgsLen}}, + {t_any(), L1} + end end end. -record_from_form({atom, _, Name}, ModFields, TypeNames, ET, M, MR, V) -> +record_from_form({atom, _, Name}, ModFields, TypeNames, ET, M, MR, V, D, L) -> case can_unfold_more({record, Name}, TypeNames) of true -> {ok, R} = dict:find(M, MR), case lookup_record(Name, R) of {ok, DeclFields} -> NewTypeNames = [{record, Name}|TypeNames], - GetModRec = get_mod_record(ModFields, DeclFields, - NewTypeNames, ET, M, MR, V), + {GetModRec, L1} = get_mod_record(ModFields, DeclFields, + NewTypeNames, ET, M, MR, V, D, L), case GetModRec of {error, FieldName} -> throw({error, io_lib:format("Illegal declaration of #~w{~w}\n", [Name, FieldName])}); {ok, NewFields} -> - NewFields1 = + {NewFields1, L2} = fields_from_form(NewFields, NewTypeNames, ET, M, MR, - dict:new()), - t_tuple( - [t_atom(Name)|[Type - || {_FieldName, Type} <- NewFields1]]) + dict:new(), D, L1), + Rec = t_tuple( + [t_atom(Name)|[Type + || {_FieldName, Type} <- NewFields1]]), + {Rec, L2} end; error -> throw({error, io_lib:format("Unknown record #~w{}\n", [Name])}) end; false -> - t_any() + {t_any(), L} end. -get_mod_record([], DeclFields, _TypeNames, _ET, _M, _MR, _V) -> - {ok, DeclFields}; -get_mod_record(ModFields, DeclFields, TypeNames, ET, M, MR, V) -> +get_mod_record([], DeclFields, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {{ok, DeclFields}, L}; +get_mod_record(ModFields, DeclFields, TypeNames, ET, M, MR, V, D, L) -> DeclFieldsDict = lists:keysort(1, DeclFields), - ModFieldsDict = build_field_dict(ModFields, TypeNames, ET, M, MR, V), + {ModFieldsDict, L1} = + build_field_dict(ModFields, TypeNames, ET, M, MR, V, D, L), case get_mod_record_types(DeclFieldsDict, ModFieldsDict, []) of - {error, _FieldName} = Error -> Error; + {error, _FieldName} = Error -> {Error, L1}; {ok, FinalKeyDict} -> - {ok, [lists:keyfind(FieldName, 1, FinalKeyDict) - || {FieldName, _, _} <- DeclFields]} + Fields = [lists:keyfind(FieldName, 1, FinalKeyDict) + || {FieldName, _, _} <- DeclFields], + {{ok, Fields}, L1} end. -build_field_dict(FieldTypes, TypeNames, ET, M, MR, V) -> - L = [{Name, Type, t_from_form(Type, TypeNames, ET, M, MR, V)} - || {type, _, field_type, [{atom, _, Name}, Type]} <- FieldTypes], - lists:keysort(1, L). +build_field_dict(FieldTypes, TypeNames, ET, M, MR, V, D, L) -> + build_field_dict(FieldTypes, TypeNames, ET, M, MR, V, D, L, []). + +build_field_dict([{type, _, field_type, [{atom, _, Name}, Type]}|Left], + TypeNames, ET, M, MR, V, D, L, Acc) -> + {T, L1} = t_from_form(Type, TypeNames, ET, M, MR, V, D, L - 1), + %% The cached record field type (DeclType) in + %% get_mod_record_types()), was created with a similar call as TT. + %% Using T for the subtype test does not work since any() is not + %% always a subset of the field type. + TT = t_from_form(Type, ET, M, MR, V), + NewAcc = [{Name, Type, T, TT}|Acc], + {Dict, L2} = + build_field_dict(Left, TypeNames, ET, M, MR, V, D, L1, NewAcc), + {Dict, L2}; +build_field_dict([], _TypeNames, _ET, _M, _MR, _V, _D, L, Acc) -> + {lists:keysort(1, Acc), L}. get_mod_record_types([{FieldName, _Abstr, DeclType}|Left1], - [{FieldName, TypeForm, ModType}|Left2], Acc) -> - ModTypeNoVars = subst_all_vars_to_any(ModType), + [{FieldName, TypeForm, ModType, ModTypeTest}|Left2], + Acc) -> + ModTypeNoVars = subst_all_vars_to_any(ModTypeTest), case t_is_subtype(ModTypeNoVars, DeclType) of false -> {error, FieldName}; true -> get_mod_record_types(Left1, Left2, - [{FieldName, TypeForm, DeclType}|Acc]) + [{FieldName, TypeForm, ModType}|Acc]) end; get_mod_record_types([{FieldName1, _Abstr, _DeclType} = DT|Left1], - [{FieldName2, _FormType, _ModType}|_] = List2, - Acc) when FieldName1 < FieldName2 -> + [{FieldName2, _FormType, _ModType, _TT}|_] = List2, + Acc) when FieldName1 < FieldName2 -> get_mod_record_types(Left1, List2, [DT|Acc]); get_mod_record_types(Left1, [], Acc) -> {ok, lists:keysort(1, Left1++Acc)}; -get_mod_record_types(_, [{FieldName2, _FormType, _ModType}|_], _Acc) -> +get_mod_record_types(_, [{FieldName2, _FormType, _ModType, _TT}|_], _Acc) -> {error, FieldName2}. -fields_from_form(Fields, TypeNames, ET, M, MR, V) -> - [{Name, t_from_form(Abstr, TypeNames, ET, M, MR, V)} - || {Name, Abstr, _Type} <- Fields]. - -t_list_from_form(Forms, TypeNames, ET, M, MR, V) -> - [t_from_form(Form, TypeNames, ET, M, MR, V) || Form <- Forms]. +%% It is important to create a limited version of the record type +%% since nested record types can otherwise easily result in huge +%% terms. +fields_from_form([], _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {[], L}; +fields_from_form([{Name, Abstr, _Type}|Tail], TypeNames, ET, M, MR, + V, D, L) -> + {T, L1} = t_from_form(Abstr, TypeNames, ET, M, MR, V, D, L), + {F, L2} = fields_from_form(Tail, TypeNames, ET, M, MR, V, D, L1), + {[{Name, T}|F], L2}. + +list_from_form([], _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {[], L}; +list_from_form([H|Tail], TypeNames, ET, M, MR, V, D, L) -> + {H1, L1} = t_from_form(H, TypeNames, ET, M, MR, V, D, L - 1), + {T1, L2} = list_from_form(Tail, TypeNames, ET, M, MR, V, D, L1), + {[H1|T1], L2}. -spec t_var_names([erl_type()]) -> [atom()]. @@ -4440,7 +4484,8 @@ t_form_to_string({type, _L, Name, []} = T) -> M = mod, D0 = dict:new(), MR = dict:from_list([{M, D0}]), - T1 = t_from_form(T, [], sets:new(), M, MR, D0), + {T1, _} = + t_from_form(T, [], sets:new(), M, MR, D0, _Deep=1000, _ALot=100000), t_to_string(T1) catch throw:{error, _} -> atom_to_string(Name) ++ "()" end; |