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-rw-r--r--lib/stdlib/doc/src/ets.xml8
-rw-r--r--lib/stdlib/src/binary.erl2
-rw-r--r--lib/stdlib/src/erl_lint.erl61
-rw-r--r--lib/stdlib/src/ets.erl4
-rw-r--r--lib/stdlib/src/io_lib.erl7
-rw-r--r--lib/stdlib/test/erl_lint_SUITE.erl31
6 files changed, 91 insertions, 22 deletions
diff --git a/lib/stdlib/doc/src/ets.xml b/lib/stdlib/doc/src/ets.xml
index 7880bf8fbb..abaf64fb91 100644
--- a/lib/stdlib/doc/src/ets.xml
+++ b/lib/stdlib/doc/src/ets.xml
@@ -146,6 +146,10 @@
<desc><p>A match specification, see above.</p></desc>
</datatype>
<datatype>
+ <name name="comp_match_spec"/>
+ <desc><p>A compiled match specification.</p></desc>
+ </datatype>
+ <datatype>
<name name="match_pattern"/>
</datatype>
<datatype>
@@ -766,8 +770,6 @@ ets:is_compiled_ms(Broken).</code>
</func>
<func>
<name name="match_spec_compile" arity="1"/>
- <type name="comp_match_spec"/>
- <type_desc name="comp_match_spec">A compiled match specification.</type_desc>
<fsummary>Compiles a match specification into its internal representation</fsummary>
<desc>
<p>This function transforms a
@@ -791,8 +793,6 @@ ets:is_compiled_ms(Broken).</code>
</func>
<func>
<name name="match_spec_run" arity="2"/>
- <type name="comp_match_spec"/>
- <type_desc name="comp_match_spec">A compiled match specification.</type_desc>
<fsummary>Performs matching, using a compiled match_spec, on a list of tuples</fsummary>
<desc>
<p>This function executes the matching specified in a
diff --git a/lib/stdlib/src/binary.erl b/lib/stdlib/src/binary.erl
index 0e95372a76..1ed3422bc5 100644
--- a/lib/stdlib/src/binary.erl
+++ b/lib/stdlib/src/binary.erl
@@ -21,7 +21,7 @@
%% Implemented in this module:
-export([split/2,split/3,replace/3,replace/4]).
--opaque cp() :: tuple().
+-opaque cp() :: {'am' | 'bm', binary()}.
-type part() :: {Start :: non_neg_integer(), Length :: integer()}.
%%% BIFs.
diff --git a/lib/stdlib/src/erl_lint.erl b/lib/stdlib/src/erl_lint.erl
index 97dacac0a4..1e5f962375 100644
--- a/lib/stdlib/src/erl_lint.erl
+++ b/lib/stdlib/src/erl_lint.erl
@@ -365,6 +365,12 @@ format_error(callback_wrong_arity) ->
format_error({imported_predefined_type, Name}) ->
io_lib:format("referring to built-in type ~w as a remote type; "
"please take out the module name", [Name]);
+format_error({not_exported_opaque, {TypeName, Arity}}) ->
+ io_lib:format("opaque type ~w~s is not exported",
+ [TypeName, gen_type_paren(Arity)]);
+format_error({underspecified_opaque, {TypeName, Arity}}) ->
+ io_lib:format("opaque type ~w~s is underspecified and therefore meaningless",
+ [TypeName, gen_type_paren(Arity)]);
%% --- obsolete? unused? ---
format_error({format_error, {Fmt, Args}}) ->
io_lib:format(Fmt, Args);
@@ -851,7 +857,8 @@ post_traversal_check(Forms, St0) ->
StC = check_untyped_records(Forms, StB),
StD = check_on_load(StC),
StE = check_unused_records(Forms, StD),
- check_callback_information(StE).
+ StF = check_local_opaque_types(StE),
+ check_callback_information(StF).
%% check_behaviour(State0) -> State
%% Check that the behaviour attribute is valid.
@@ -2554,15 +2561,24 @@ find_field(_F, []) -> error.
%% Attr :: 'type' | 'opaque'
%% Checks that a type definition is valid.
+-record(typeinfo, {attr, line}).
+
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, -1, product, Types}, St0);
-type_def(_Attr, Line, TypeName, ProtoType, Args, St0) ->
+type_def(Attr, Line, TypeName, ProtoType, Args, St0) ->
TypeDefs = St0#lint.types,
Arity = length(Args),
TypePair = {TypeName, Arity},
+ Info = #typeinfo{attr = Attr, line = Line},
+ StoreType =
+ fun(St) ->
+ NewDefs = dict:store(TypePair, Info, TypeDefs),
+ CheckType = {type, -1, product, [ProtoType|Args]},
+ check_type(CheckType, St#lint{types=NewDefs})
+ end,
case (dict:is_key(TypePair, TypeDefs) orelse is_var_arity_type(TypeName)) of
true ->
case dict:is_key(TypePair, default_types()) of
@@ -2572,20 +2588,29 @@ type_def(_Attr, Line, TypeName, ProtoType, Args, St0) ->
true ->
Warn = {new_builtin_type, TypePair},
St1 = add_warning(Line, Warn, St0),
- NewDefs = dict:store(TypePair, Line, TypeDefs),
- CheckType = {type, -1, product, [ProtoType|Args]},
- check_type(CheckType, St1#lint{types=NewDefs});
+ StoreType(St1);
false ->
add_error(Line, {builtin_type, TypePair}, St0)
end;
false -> add_error(Line, {redefine_type, TypePair}, St0)
end;
false ->
- NewDefs = dict:store(TypePair, Line, TypeDefs),
- CheckType = {type, -1, product, [ProtoType|Args]},
- check_type(CheckType, St0#lint{types=NewDefs})
+ St1 = case
+ Attr =:= opaque andalso
+ is_underspecified(ProtoType, Arity)
+ of
+ true ->
+ Warn = {underspecified_opaque, TypePair},
+ add_warning(Line, Warn, St0);
+ false -> St0
+ end,
+ StoreType(St1)
end.
+is_underspecified({type,_,term,[]}, 0) -> true;
+is_underspecified({type,_,any,[]}, 0) -> true;
+is_underspecified(_ProtType, _Arity) -> false.
+
check_type(Types, St) ->
{SeenVars, St1} = check_type(Types, dict:new(), St),
dict:fold(fun(Var, {seen_once, Line}, AccSt) ->
@@ -2895,7 +2920,7 @@ check_unused_types(Forms, #lint{usage=Usage, types=Ts, exp_types=ExpTs}=St) ->
fun(_Type, -1, AccSt) ->
%% Default type
AccSt;
- (Type, FileLine, AccSt) ->
+ (Type, #typeinfo{line = FileLine}, AccSt) ->
case loc(FileLine) of
{FirstFile, _} ->
case gb_sets:is_member(Type, UsedTypes) of
@@ -2914,6 +2939,24 @@ check_unused_types(Forms, #lint{usage=Usage, types=Ts, exp_types=ExpTs}=St) ->
St
end.
+check_local_opaque_types(St) ->
+ #lint{types=Ts, exp_types=ExpTs} = St,
+ FoldFun =
+ fun(_Type, -1, AccSt) ->
+ %% Default type
+ AccSt;
+ (_Type, #typeinfo{attr = type}, AccSt) ->
+ AccSt;
+ (Type, #typeinfo{attr = opaque, line = FileLine}, AccSt) ->
+ case gb_sets:is_element(Type, ExpTs) of
+ true -> AccSt;
+ false ->
+ Warn = {not_exported_opaque,Type},
+ add_warning(FileLine, Warn, AccSt)
+ end
+ end,
+ dict:fold(FoldFun, St, Ts).
+
%% icrt_clauses(Clauses, In, ImportVarTable, State) ->
%% {NewVts,State}.
diff --git a/lib/stdlib/src/ets.erl b/lib/stdlib/src/ets.erl
index 817b397cc4..ee6cff1b75 100644
--- a/lib/stdlib/src/ets.erl
+++ b/lib/stdlib/src/ets.erl
@@ -42,7 +42,7 @@
-export([i/0, i/1, i/2, i/3]).
--export_type([tab/0, tid/0, match_spec/0]).
+-export_type([tab/0, tid/0, match_spec/0, comp_match_spec/0]).
%%-----------------------------------------------------------------------------
@@ -445,7 +445,7 @@ update_element(_, _, _) ->
%%% End of BIFs
--opaque comp_match_spec() :: any(). %% this one is REALLY opaque
+-opaque comp_match_spec() :: binary(). %% this one is REALLY opaque
-spec match_spec_run(List, CompiledMatchSpec) -> list() when
List :: [tuple()],
diff --git a/lib/stdlib/src/io_lib.erl b/lib/stdlib/src/io_lib.erl
index 0252cdf742..ab62b72519 100644
--- a/lib/stdlib/src/io_lib.erl
+++ b/lib/stdlib/src/io_lib.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2011. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2012. 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
@@ -82,7 +82,10 @@
-type chars() :: [char() | chars()].
-type depth() :: -1 | non_neg_integer().
--opaque continuation() :: {_, _, _, _}. % XXX: refine
+-opaque continuation() :: {Format :: string(),
+ Stack :: chars(),
+ Nchars :: non_neg_integer(),
+ Results :: [term()]}.
%%----------------------------------------------------------------------
diff --git a/lib/stdlib/test/erl_lint_SUITE.erl b/lib/stdlib/test/erl_lint_SUITE.erl
index 944d8ebd6a..90a37f6441 100644
--- a/lib/stdlib/test/erl_lint_SUITE.erl
+++ b/lib/stdlib/test/erl_lint_SUITE.erl
@@ -50,7 +50,8 @@
unsafe_vars_try/1,
guard/1, otp_4886/1, otp_4988/1, otp_5091/1, otp_5276/1, otp_5338/1,
otp_5362/1, otp_5371/1, otp_7227/1, otp_5494/1, otp_5644/1, otp_5878/1,
- otp_5917/1, otp_6585/1, otp_6885/1, export_all/1,
+ otp_5917/1, otp_6585/1, otp_6885/1, otp_10436/1,
+ export_all/1,
bif_clash/1,
behaviour_basic/1, behaviour_multiple/1,
otp_7550/1,
@@ -80,7 +81,7 @@ all() ->
unsafe_vars, unsafe_vars2, unsafe_vars_try, guard,
otp_4886, otp_4988, otp_5091, otp_5276, otp_5338,
otp_5362, otp_5371, otp_7227, otp_5494, otp_5644,
- otp_5878, otp_5917, otp_6585, otp_6885, export_all,
+ otp_5878, otp_5917, otp_6585, otp_6885, otp_10436, export_all,
bif_clash, behaviour_basic, behaviour_multiple,
otp_7550, otp_8051, format_warn, {group, on_load},
too_many_arguments].
@@ -2386,6 +2387,28 @@ otp_6885(Config) when is_list(Config) ->
[]} = run_test2(Config, Ts, []),
ok.
+otp_10436(doc) ->
+ "OTP-6885. Warnings for opaque types.";
+otp_10436(suite) -> [];
+otp_10436(Config) when is_list(Config) ->
+ Ts = <<"-module(otp_10436).
+ -export_type([t1/0]).
+ -opaque t1() :: {i, integer()}.
+ -opaque t2() :: {a, atom()}.
+ ">>,
+ {warnings,[{4,erl_lint,{not_exported_opaque,{t2,0}}},
+ {4,erl_lint,{unused_type,{t2,0}}}]} =
+ run_test2(Config, Ts, []),
+ Ts2 = <<"-module(otp_10436_2).
+ -export_type([t1/0, t2/0]).
+ -opaque t1() :: term().
+ -opaque t2() :: any().
+ ">>,
+ {warnings,[{3,erl_lint,{underspecified_opaque,{t1,0}}},
+ {4,erl_lint,{underspecified_opaque,{t2,0}}}]} =
+ run_test2(Config, Ts2, []),
+ ok.
+
export_all(doc) ->
"OTP-7392. Warning for export_all.";
export_all(Config) when is_list(Config) ->
@@ -2834,10 +2857,10 @@ otp_8051(doc) ->
otp_8051(Config) when is_list(Config) ->
Ts = [{otp_8051,
<<"-opaque foo() :: bar().
+ -export_type([foo/0]).
">>,
[],
- {error,[{1,erl_lint,{undefined_type,{bar,0}}}],
- [{1,erl_lint,{unused_type,{foo,0}}}]}}],
+ {errors,[{1,erl_lint,{undefined_type,{bar,0}}}],[]}}],
?line [] = run(Config, Ts),
ok.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 10:06:59 +0000