aboutsummaryrefslogtreecommitdiffstats
path: root/lib/stdlib/src/erl_lint.erl
diff options
context:
space:
mode:
Diffstat (limited to 'lib/stdlib/src/erl_lint.erl')
-rw-r--r--lib/stdlib/src/erl_lint.erl94
1 files changed, 53 insertions, 41 deletions
diff --git a/lib/stdlib/src/erl_lint.erl b/lib/stdlib/src/erl_lint.erl
index 5678e7eebe..4ca9a609a8 100644
--- a/lib/stdlib/src/erl_lint.erl
+++ b/lib/stdlib/src/erl_lint.erl
@@ -2,7 +2,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2015. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -31,12 +31,8 @@
-export([is_guard_expr/1]).
-export([bool_option/4,value_option/3,value_option/7]).
--export([modify_line/2]).
-
-import(lists, [member/2,map/2,foldl/3,foldr/3,mapfoldl/3,all/2,reverse/1]).
--deprecated([{modify_line, 2, next_major_release}]).
-
%% bool_option(OnOpt, OffOpt, Default, Options) -> boolean().
%% value_option(Flag, Default, Options) -> Value.
%% value_option(Flag, Default, OnOpt, OnVal, OffOpt, OffVal, Options) ->
@@ -79,7 +75,7 @@ value_option(Flag, Default, On, OnVal, Off, OffVal, Opts) ->
%%-define(DEBUGF(X,Y), io:format(X, Y)).
-define(DEBUGF(X,Y), void).
--type line() :: erl_anno:line(). % a convenient alias
+-type line() :: erl_anno:anno(). % a convenient alias
-type fa() :: {atom(), arity()}. % function+arity
-type ta() :: {atom(), arity()}. % type+arity
@@ -100,7 +96,7 @@ value_option(Flag, Default, On, OnVal, Off, OffVal, Opts) ->
%% 'called' and 'exports' contain {Line, {Function, Arity}},
%% the other function collections contain {Function, Arity}.
-record(lint, {state=start :: 'start' | 'attribute' | 'function',
- module=[], %Module
+ module='', %Module
behaviour=[], %Behaviour
exports=gb_sets:empty() :: gb_sets:set(fa()),%Exports
imports=[] :: [fa()], %Imports, an orddict()
@@ -238,6 +234,9 @@ format_error({removed, MFA, ReplacementMFA, Rel}) ->
"use ~s", [format_mfa(MFA), Rel, format_mfa(ReplacementMFA)]);
format_error({removed, MFA, String}) when is_list(String) ->
io_lib:format("~s: ~s", [format_mfa(MFA), String]);
+format_error({removed_type, MNA, ReplacementMNA, Rel}) ->
+ io_lib:format("the type ~s was removed in ~s; use ~s instead",
+ [format_mna(MNA), Rel, format_mna(ReplacementMNA)]);
format_error({obsolete_guard, {F, A}}) ->
io_lib:format("~p/~p obsolete", [F, A]);
format_error({too_many_arguments,Arity}) ->
@@ -361,6 +360,9 @@ format_error({redefine_type, {TypeName, Arity}}) ->
[TypeName, gen_type_paren(Arity)]);
format_error({type_syntax, Constr}) ->
io_lib:format("bad ~w type", [Constr]);
+format_error(old_abstract_code) ->
+ io_lib:format("abstract code generated before Erlang/OTP 19.0 and "
+ "having typed record fields cannot be compiled", []);
format_error({redefine_spec, {M, F, A}}) ->
io_lib:format("spec for ~w:~w/~w already defined", [M, F, A]);
format_error({redefine_spec, {F, A}}) ->
@@ -374,9 +376,9 @@ format_error({spec_fun_undefined, {F, A}}) ->
format_error({missing_spec, {F,A}}) ->
io_lib:format("missing specification for function ~w/~w", [F, A]);
format_error(spec_wrong_arity) ->
- "spec has the wrong arity";
+ "spec has wrong arity";
format_error(callback_wrong_arity) ->
- "callback has the wrong arity";
+ "callback has wrong arity";
format_error({deprecated_builtin_type, {Name, Arity},
Replacement, Rel}) ->
UseS = case Replacement of
@@ -416,6 +418,9 @@ format_mfa({M, F, A}) when is_integer(A) ->
format_mf(M, F, ArityString) when is_atom(M), is_atom(F) ->
atom_to_list(M) ++ ":" ++ atom_to_list(F) ++ "/" ++ ArityString.
+format_mna({M, N, A}) when is_integer(A) ->
+ atom_to_list(M) ++ ":" ++ atom_to_list(N) ++ gen_type_paren(A).
+
format_where(L) when is_integer(L) ->
io_lib:format("(line ~p)", [L]);
format_where({L,C}) when is_integer(L), is_integer(C) ->
@@ -694,7 +699,12 @@ set_form_file({function,L,N,A,C}, File) ->
set_form_file(Form, _File) ->
Form.
+set_file(Ts, File) when is_list(Ts) ->
+ [anno_set_file(T, File) || T <- Ts];
set_file(T, File) ->
+ anno_set_file(T, File).
+
+anno_set_file(T, File) ->
F = fun(Anno) -> erl_anno:set_file(File, Anno) end,
erl_parse:map_anno(F, T).
@@ -729,7 +739,7 @@ start_state(Form, St) ->
%% attribute_state(Form, State) ->
%% State'
-attribute_state({attribute,_L,module,_M}, #lint{module=[]}=St) ->
+attribute_state({attribute,_L,module,_M}, #lint{module=''}=St) ->
St;
attribute_state({attribute,L,module,_M}, St) ->
add_error(L, redefine_module, St);
@@ -1136,7 +1146,7 @@ check_untyped_records(Forms, St0) ->
RecNames = dict:fetch_keys(St0#lint.records),
%% these are the records with field(s) containing type info
TRecNames = [Name ||
- {attribute,_,type,{{record,Name},Fields,_}} <- Forms,
+ {attribute,_,record,{Name,Fields}} <- Forms,
lists:all(fun ({typed_record_field,_,_}) -> true;
(_) -> false
end, Fields)],
@@ -1146,7 +1156,8 @@ check_untyped_records(Forms, St0) ->
[] -> St; % exclude records with no fields
[_|_] -> add_warning(L, {untyped_record, N}, St)
end
- end, St0, RecNames -- TRecNames);
+ end, St0, ordsets:subtract(ordsets:from_list(RecNames),
+ ordsets:from_list(TRecNames)));
false ->
St0
end.
@@ -2436,7 +2447,10 @@ record_def(Line, Name, Fs0, St0) ->
true -> add_error(Line, {redefine_record,Name}, St0);
false ->
{Fs1,St1} = def_fields(normalise_fields(Fs0), Name, St0),
- St1#lint{records=dict:store(Name, {Line,Fs1}, St1#lint.records)}
+ St2 = St1#lint{records=dict:store(Name, {Line,Fs1},
+ St1#lint.records)},
+ Types = [T || {typed_record_field, _, T} <- Fs0],
+ check_type({type, nowarn(), product, Types}, St2)
end.
%% def_fields([RecDef], RecordName, State) -> {[DefField],State}.
@@ -2639,11 +2653,6 @@ find_field(_F, []) -> error.
%% Attr :: 'type' | 'opaque'
%% Checks that a type definition is valid.
-type_def(_Attr, _Line, {record, _RecName}, Fields, [], St0) ->
- %% The record field names and such are checked in the record format.
- %% We only need to check the types.
- Types = [T || {typed_record_field, _, T} <- Fields],
- check_type({type, nowarn(), product, Types}, St0);
type_def(Attr, Line, TypeName, ProtoType, Args, St0) ->
TypeDefs = St0#lint.types,
Arity = length(Args),
@@ -2806,6 +2815,8 @@ check_type({user_type, L, TypeName, Args}, SeenVars, St) ->
lists:foldl(fun(T, {AccSeenVars, AccSt}) ->
check_type(T, AccSeenVars, AccSt)
end, {SeenVars, St1}, Args);
+check_type([{typed_record_field,Field,_T}|_], SeenVars, St) ->
+ {SeenVars, add_error(element(2, Field), old_abstract_code, St)};
check_type(I, SeenVars, St) ->
case erl_eval:partial_eval(I) of
{integer,_ILn,_Integer} -> {SeenVars, St};
@@ -2876,7 +2887,7 @@ spec_decl(Line, MFA0, TypeSpecs, St0 = #lint{specs = Specs, module = Mod}) ->
St1 = St0#lint{specs = dict:store(MFA, Line, Specs)},
case dict:is_key(MFA, Specs) of
true -> add_error(Line, {redefine_spec, MFA0}, St1);
- false -> check_specs(TypeSpecs, Arity, St1)
+ false -> check_specs(TypeSpecs, spec_wrong_arity, Arity, St1)
end.
%% callback_decl(Line, Fun, Types, State) -> State.
@@ -2890,7 +2901,8 @@ callback_decl(Line, MFA0, TypeSpecs,
St1 = St0#lint{callbacks = dict:store(MFA, Line, Callbacks)},
case dict:is_key(MFA, Callbacks) of
true -> add_error(Line, {redefine_callback, MFA0}, St1);
- false -> check_specs(TypeSpecs, Arity, St1)
+ false -> check_specs(TypeSpecs, callback_wrong_arity,
+ Arity, St1)
end
end.
@@ -2927,7 +2939,7 @@ is_fa({FuncName, Arity})
when is_atom(FuncName), is_integer(Arity), Arity >= 0 -> true;
is_fa(_) -> false.
-check_specs([FunType|Left], Arity, St0) ->
+check_specs([FunType|Left], ETag, Arity, St0) ->
{FunType1, CTypes} =
case FunType of
{type, _, bounded_fun, [FT = {type, _, 'fun', _}, Cs]} ->
@@ -2935,18 +2947,16 @@ check_specs([FunType|Left], Arity, St0) ->
{FT, lists:append(Types0)};
{type, _, 'fun', _} = FT -> {FT, []}
end,
- SpecArity =
- case FunType1 of
- {type, L, 'fun', [any, _]} -> any;
- {type, L, 'fun', [{type, _, product, D}, _]} -> length(D)
- end,
+ {type, L, 'fun', [{type, _, product, D}, _]} = FunType1,
+ SpecArity = length(D),
St1 = case Arity =:= SpecArity of
true -> St0;
- false -> add_error(L, spec_wrong_arity, St0)
+ false -> %% Cannot happen if called from the compiler.
+ add_error(L, ETag, St0)
end,
St2 = check_type({type, nowarn(), product, [FunType1|CTypes]}, St1),
- check_specs(Left, Arity, St2);
-check_specs([], _Arity, St) ->
+ check_specs(Left, ETag, Arity, St2);
+check_specs([], _ETag, _Arity, St) ->
St.
nowarn() ->
@@ -2988,9 +2998,10 @@ add_missing_spec_warnings(Forms, St0, Type) ->
[{FA,L} || {function,L,F,A,_} <- Forms,
not lists:member(FA = {F,A}, Specs)];
exported ->
- Exps = gb_sets:to_list(St0#lint.exports) -- pseudolocals(),
+ Exps0 = gb_sets:to_list(St0#lint.exports) -- pseudolocals(),
+ Exps = Exps0 -- Specs,
[{FA,L} || {function,L,F,A,_} <- Forms,
- member(FA = {F,A}, Exps -- Specs)]
+ member(FA = {F,A}, Exps)]
end,
foldl(fun ({FA,L}, St) ->
add_warning(L, {missing_spec,FA}, St)
@@ -3003,7 +3014,9 @@ check_unused_types(Forms, #lint{usage=Usage, types=Ts, exp_types=ExpTs}=St) ->
L = gb_sets:to_list(ExpTs) ++ dict:fetch_keys(D),
UsedTypes = gb_sets:from_list(L),
FoldFun =
- fun(Type, #typeinfo{line = FileLine}, AccSt) ->
+ fun({{record, _}=_Type, 0}, _, AccSt) ->
+ AccSt; % Before Erlang/OTP 19.0
+ (Type, #typeinfo{line = FileLine}, AccSt) ->
case loc(FileLine, AccSt) of
{FirstFile, _} ->
case gb_sets:is_member(Type, UsedTypes) of
@@ -3190,8 +3203,8 @@ handle_generator(P,E,Vt,Uvt,St0) ->
handle_bitstring_gen_pat({bin,_,Segments=[_|_]},St) ->
case lists:last(Segments) of
{bin_element,Line,{var,_,_},default,Flags} when is_list(Flags) ->
- case member(binary, Flags) orelse member(bits, Flags)
- orelse member(bitstring, Flags) of
+ case member(binary, Flags) orelse member(bytes, Flags)
+ orelse member(bits, Flags) orelse member(bitstring, Flags) of
true ->
add_error(Line, unsized_binary_in_bin_gen_pattern, St);
false ->
@@ -3485,13 +3498,6 @@ vt_no_unused(Vt) -> [V || {_,{_,U,_L}}=V <- Vt, U =/= unused].
copy_expr(Expr, Anno) ->
erl_parse:map_anno(fun(_A) -> Anno end, Expr).
-%% modify_line(Form, Fun) -> Form
-%% modify_line(Expression, Fun) -> Expression
-%% Applies Fun to each line number occurrence.
-
-modify_line(T, F0) ->
- erl_parse:map_anno(F0, T).
-
%% Check a record_info call. We have already checked that it is not
%% shadowed by an import.
@@ -3532,6 +3538,8 @@ check_qlc_hrl(Line, M, F, As, St) ->
%% deprecated_function(Line, ModName, FuncName, [Arg], State) -> State.
%% Add warning for calls to deprecated functions.
+-dialyzer({no_match, deprecated_function/5}).
+
deprecated_function(Line, M, F, As, St) ->
Arity = length(As),
MFA = {M, F, Arity},
@@ -3560,6 +3568,8 @@ deprecated_function(Line, M, F, As, St) ->
St
end.
+-dialyzer({no_match, deprecated_type/5}).
+
deprecated_type(L, M, N, As, St) ->
NAs = length(As),
case otp_internal:obsolete_type(M, N, NAs) of
@@ -3570,6 +3580,8 @@ deprecated_type(L, M, N, As, St) ->
false ->
St
end;
+ {removed, Replacement, Rel} ->
+ add_warning(L, {removed_type, {M,N,NAs}, Replacement, Rel}, St);
no ->
St
end.
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-21 10:33:47 +0000