diff options
Diffstat (limited to 'lib/stdlib/src/erl_internal.erl')
| -rw-r--r-- | lib/stdlib/src/erl_internal.erl | 196 |
1 files changed, 155 insertions, 41 deletions
diff --git a/lib/stdlib/src/erl_internal.erl b/lib/stdlib/src/erl_internal.erl index edfb097de0..89b97b901e 100644 --- a/lib/stdlib/src/erl_internal.erl +++ b/lib/stdlib/src/erl_internal.erl @@ -1,18 +1,19 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1998-2013. All Rights Reserved. +%% Copyright Ericsson AB 1998-2017. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. %% %% %CopyrightEnd% %% @@ -51,6 +52,10 @@ type_test/2,new_type_test/2,old_type_test/2,old_bif/2]). -export([arith_op/2,bool_op/2,comp_op/2,list_op/2,send_op/2,op_type/2]). +-export([is_type/2]). + +-export([add_predefined_functions/1]). + %%--------------------------------------------------------------------------- %% Erlang builtin functions allowed in guards. @@ -58,42 +63,28 @@ Name :: atom(), Arity :: arity(). +%% Please keep the alphabetical order. guard_bif(abs, 1) -> true; -guard_bif(float, 1) -> true; -guard_bif(trunc, 1) -> true; -guard_bif(round, 1) -> true; -guard_bif(length, 1) -> true; -guard_bif(hd, 1) -> true; -guard_bif(tl, 1) -> true; -guard_bif(size, 1) -> true; +guard_bif(binary_part, 2) -> true; +guard_bif(binary_part, 3) -> true; guard_bif(bit_size, 1) -> true; guard_bif(byte_size, 1) -> true; +guard_bif(ceil, 1) -> true; guard_bif(element, 2) -> true; -guard_bif(self, 0) -> true; +guard_bif(float, 1) -> true; +guard_bif(floor, 1) -> true; +guard_bif(hd, 1) -> true; +guard_bif(length, 1) -> true; guard_bif(map_size, 1) -> true; guard_bif(node, 0) -> true; guard_bif(node, 1) -> true; +guard_bif(round, 1) -> true; +guard_bif(self, 0) -> true; +guard_bif(size, 1) -> true; +guard_bif(tl, 1) -> true; +guard_bif(trunc, 1) -> true; guard_bif(tuple_size, 1) -> true; -guard_bif(is_atom, 1) -> true; -guard_bif(is_binary, 1) -> true; -guard_bif(is_bitstring, 1) -> true; -guard_bif(is_boolean, 1) -> true; -guard_bif(is_float, 1) -> true; -guard_bif(is_function, 1) -> true; -guard_bif(is_function, 2) -> true; -guard_bif(is_integer, 1) -> true; -guard_bif(is_list, 1) -> true; -guard_bif(is_map, 1) -> true; -guard_bif(is_number, 1) -> true; -guard_bif(is_pid, 1) -> true; -guard_bif(is_port, 1) -> true; -guard_bif(is_reference, 1) -> true; -guard_bif(is_tuple, 1) -> true; -guard_bif(is_record, 2) -> true; -guard_bif(is_record, 3) -> true; -guard_bif(binary_part, 2) -> true; -guard_bif(binary_part, 3) -> true; -guard_bif(Name, A) when is_atom(Name), is_integer(A) -> false. +guard_bif(Name, A) -> new_type_test(Name, A). %% Erlang type tests. -spec type_test(Name, Arity) -> boolean() when @@ -106,10 +97,11 @@ type_test(Name, Arity) -> %% Erlang new-style type tests. -spec new_type_test(Name::atom(), Arity::arity()) -> boolean(). +%% Please keep the alphabetical order. new_type_test(is_atom, 1) -> true; -new_type_test(is_boolean, 1) -> true; new_type_test(is_binary, 1) -> true; new_type_test(is_bitstring, 1) -> true; +new_type_test(is_boolean, 1) -> true; new_type_test(is_float, 1) -> true; new_type_test(is_function, 1) -> true; new_type_test(is_function, 2) -> true; @@ -119,10 +111,10 @@ new_type_test(is_map, 1) -> true; new_type_test(is_number, 1) -> true; new_type_test(is_pid, 1) -> true; new_type_test(is_port, 1) -> true; -new_type_test(is_reference, 1) -> true; -new_type_test(is_tuple, 1) -> true; new_type_test(is_record, 2) -> true; new_type_test(is_record, 3) -> true; +new_type_test(is_reference, 1) -> true; +new_type_test(is_tuple, 1) -> true; new_type_test(Name, A) when is_atom(Name), is_integer(A) -> false. %% Erlang old-style type tests. @@ -268,6 +260,7 @@ bif(bitsize, 1) -> true; bif(bit_size, 1) -> true; bif(bitstring_to_list, 1) -> true; bif(byte_size, 1) -> true; +bif(ceil, 1) -> true; bif(check_old_code, 1) -> true; bif(check_process_code, 2) -> true; bif(check_process_code, 3) -> true; @@ -288,11 +281,13 @@ bif(float_to_list, 1) -> true; bif(float_to_list, 2) -> true; bif(float_to_binary, 1) -> true; bif(float_to_binary, 2) -> true; +bif(floor, 1) -> true; bif(garbage_collect, 0) -> true; bif(garbage_collect, 1) -> true; bif(garbage_collect, 2) -> true; bif(get, 0) -> true; bif(get, 1) -> true; +bif(get_keys, 0) -> true; bif(get_keys, 1) -> true; bif(group_leader, 0) -> true; bif(group_leader, 2) -> true; @@ -336,6 +331,8 @@ bif(list_to_float, 1) -> true; bif(list_to_integer, 1) -> true; bif(list_to_integer, 2) -> true; bif(list_to_pid, 1) -> true; +bif(list_to_port, 1) -> true; +bif(list_to_ref, 1) -> true; bif(list_to_tuple, 1) -> true; bif(load_module, 2) -> true; bif(make_ref, 0) -> true; @@ -353,6 +350,7 @@ bif(nodes, 1) -> true; bif(now, 0) -> true; bif(open_port, 2) -> true; bif(pid_to_list, 1) -> true; +bif(port_to_list, 1) -> true; bif(port_close, 1) -> true; bif(port_command, 2) -> true; bif(port_command, 3) -> true; @@ -366,6 +364,7 @@ bif(process_info, 2) -> true; bif(processes, 0) -> true; bif(purge_module, 1) -> true; bif(put, 2) -> true; +bif(ref_to_list, 1) -> true; bif(register, 2) -> true; bif(registered, 0) -> true; bif(round, 1) -> true; @@ -530,3 +529,118 @@ old_bif(unlink, 1) -> true; old_bif(unregister, 1) -> true; old_bif(whereis, 1) -> true; old_bif(Name, A) when is_atom(Name), is_integer(A) -> false. + +-spec is_type(Name, NumberOfTypeVariables) -> boolean() when + Name :: atom(), + NumberOfTypeVariables :: non_neg_integer(). +%% Returns true if Name/NumberOfTypeVariables is a predefined type. + +is_type(any, 0) -> true; +is_type(arity, 0) -> true; +is_type(atom, 0) -> true; +is_type(binary, 0) -> true; +is_type(bitstring, 0) -> true; +is_type(bool, 0) -> true; +is_type(boolean, 0) -> true; +is_type(byte, 0) -> true; +is_type(char, 0) -> true; +is_type(float, 0) -> true; +is_type(function, 0) -> true; +is_type(identifier, 0) -> true; +is_type(integer, 0) -> true; +is_type(iodata, 0) -> true; +is_type(iolist, 0) -> true; +is_type(list, 0) -> true; +is_type(list, 1) -> true; +is_type(map, 0) -> true; +is_type(maybe_improper_list, 0) -> true; +is_type(maybe_improper_list, 2) -> true; +is_type(mfa, 0) -> true; +is_type(module, 0) -> true; +is_type(neg_integer, 0) -> true; +is_type(nil, 0) -> true; +is_type(no_return, 0) -> true; +is_type(node, 0) -> true; +is_type(non_neg_integer, 0) -> true; +is_type(none, 0) -> true; +is_type(nonempty_improper_list, 2) -> true; +is_type(nonempty_list, 0) -> true; +is_type(nonempty_list, 1) -> true; +is_type(nonempty_maybe_improper_list, 0) -> true; +is_type(nonempty_maybe_improper_list, 2) -> true; +is_type(nonempty_string, 0) -> true; +is_type(number, 0) -> true; +is_type(pid, 0) -> true; +is_type(port, 0) -> true; +is_type(pos_integer, 0) -> true; +is_type(reference, 0) -> true; +is_type(string, 0) -> true; +is_type(term, 0) -> true; +is_type(timeout, 0) -> true; +is_type(tuple, 0) -> true; +is_type(_, _) -> false. + +%%% +%%% Add and export the pre-defined functions: +%%% +%%% module_info/0 +%%% module_info/1 +%%% behaviour_info/1 (optional) +%%% + +-spec add_predefined_functions(Forms) -> UpdatedForms when + Forms :: [erl_parse:abstract_form() | erl_parse:form_info()], + UpdatedForms :: [erl_parse:abstract_form() | erl_parse:form_info()]. + +add_predefined_functions(Forms) -> + Forms ++ predefined_functions(Forms). + +predefined_functions(Forms) -> + Attrs = [{Name,Val} || {attribute,_,Name,Val} <- Forms], + {module,Mod} = lists:keyfind(module, 1, Attrs), + Callbacks = [Callback || {callback,Callback} <- Attrs], + OptionalCallbacks = get_optional_callbacks(Attrs), + Mpf1 = module_predef_func_beh_info(Callbacks, OptionalCallbacks), + Mpf2 = module_predef_funcs_mod_info(Mod), + Mpf = [erl_parse:new_anno(F) || F <- Mpf1++Mpf2], + Exp = [{F,A} || {function,_,F,A,_} <- Mpf], + [{attribute,0,export,Exp}|Mpf]. + +get_optional_callbacks(Attrs) -> + L = [O || {optional_callbacks,O} <- Attrs, is_fa_list(O)], + lists:append(L). + +is_fa_list([{FuncName, Arity}|L]) + when is_atom(FuncName), is_integer(Arity), Arity >= 0 -> + is_fa_list(L); +is_fa_list([]) -> true; +is_fa_list(_) -> false. + +module_predef_func_beh_info([], _) -> + []; +module_predef_func_beh_info(Callbacks0, OptionalCallbacks) -> + Callbacks = [FA || {{_,_}=FA,_} <- Callbacks0], + List = make_list(Callbacks), + OptionalList = make_list(OptionalCallbacks), + [{function,0,behaviour_info,1, + [{clause,0,[{atom,0,callbacks}],[],[List]}, + {clause,0,[{atom,0,optional_callbacks}],[],[OptionalList]}]}]. + +make_list([]) -> {nil,0}; +make_list([{Name,Arity}|Rest]) -> + {cons,0, + {tuple,0, + [{atom,0,Name}, + {integer,0,Arity}]}, + make_list(Rest)}. + +module_predef_funcs_mod_info(Mod) -> + ModAtom = {atom,0,Mod}, + [{function,0,module_info,0, + [{clause,0,[],[], + [{call,0,{remote,0,{atom,0,erlang},{atom,0,get_module_info}}, + [ModAtom]}]}]}, + {function,0,module_info,1, + [{clause,0,[{var,0,'X'}],[], + [{call,0,{remote,0,{atom,0,erlang},{atom,0,get_module_info}}, + [ModAtom,{var,0,'X'}]}]}]}]. |