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-rw-r--r--lib/stdlib/examples/erl_id_trans.erl9
-rw-r--r--lib/stdlib/src/erl_eval.erl3
-rw-r--r--lib/stdlib/src/erl_lint.erl9
-rw-r--r--lib/stdlib/src/erl_parse.yrl12
-rw-r--r--lib/stdlib/src/erl_pp.erl10
-rw-r--r--lib/stdlib/src/qlc.erl5
-rw-r--r--lib/stdlib/test/erl_eval_SUITE.erl6
-rw-r--r--lib/stdlib/test/erl_pp_SUITE.erl5
-rw-r--r--lib/stdlib/test/qlc_SUITE.erl2
9 files changed, 49 insertions, 12 deletions
diff --git a/lib/stdlib/examples/erl_id_trans.erl b/lib/stdlib/examples/erl_id_trans.erl
index b63acdd40a..72e41d6473 100644
--- a/lib/stdlib/examples/erl_id_trans.erl
+++ b/lib/stdlib/examples/erl_id_trans.erl
@@ -419,7 +419,14 @@ expr({'fun',Line,Body}) ->
{'fun',Line,{clauses,Cs1}};
{function,F,A} ->
{'fun',Line,{function,F,A}};
- {function,M,F,A} -> %R10B-6: fun M:F/A.
+ {function,M,F,A} when is_atom(M), is_atom(F), is_integer(A) ->
+ %% R10B-6: fun M:F/A. (Backward compatibility)
+ {'fun',Line,{function,M,F,A}};
+ {function,M0,F0,A0} ->
+ %% R15: fun M:F/A with variables.
+ M = expr(M0),
+ F = expr(F0),
+ A = expr(A0),
{'fun',Line,{function,M,F,A}}
end;
expr({call,Line,F0,As0}) ->
diff --git a/lib/stdlib/src/erl_eval.erl b/lib/stdlib/src/erl_eval.erl
index 4f4fa16040..88a0094d57 100644
--- a/lib/stdlib/src/erl_eval.erl
+++ b/lib/stdlib/src/erl_eval.erl
@@ -256,7 +256,8 @@ expr({'receive',_,Cs}, Bs, Lf, Ef, RBs) ->
expr({'receive',_, Cs, E, TB}, Bs0, Lf, Ef, RBs) ->
{value,T,Bs} = expr(E, Bs0, Lf, Ef, none),
receive_clauses(T, Cs, {TB,Bs}, Bs0, Lf, Ef, [], RBs);
-expr({'fun',_Line,{function,Mod,Name,Arity}}, Bs, _Lf, _Ef, RBs) ->
+expr({'fun',_Line,{function,Mod0,Name0,Arity0}}, Bs0, Lf, Ef, RBs) ->
+ {[Mod,Name,Arity],Bs} = expr_list([Mod0,Name0,Arity0], Bs0, Lf, Ef),
F = erlang:make_fun(Mod, Name, Arity),
ret_expr(F, Bs, RBs);
expr({'fun',_Line,{function,Name,Arity}}, _Bs0, _Lf, _Ef, _RBs) -> % R8
diff --git a/lib/stdlib/src/erl_lint.erl b/lib/stdlib/src/erl_lint.erl
index 78b996d94b..5d45260fe9 100644
--- a/lib/stdlib/src/erl_lint.erl
+++ b/lib/stdlib/src/erl_lint.erl
@@ -2127,8 +2127,13 @@ expr({'fun',Line,Body}, Vt, St) ->
true -> {[],St};
false -> {[],call_function(Line, F, A, St)}
end;
- {function,_M,_F,_A} ->
- {[],St}
+ {function,M,F,A} when is_atom(M), is_atom(F), is_integer(A) ->
+ %% Compatibility with pre-R15 abstract format.
+ {[],St};
+ {function,M,F,A} ->
+ %% New in R15.
+ {Bvt, St1} = expr_list([M,F,A], Vt, St),
+ {vtupdate(Bvt, Vt),St1}
end;
expr({call,_Line,{atom,_Lr,is_record},[E,{atom,Ln,Name}]}, Vt, St0) ->
{Rvt,St1} = expr(E, Vt, St0),
diff --git a/lib/stdlib/src/erl_parse.yrl b/lib/stdlib/src/erl_parse.yrl
index 709bd83e6f..928c10f7f2 100644
--- a/lib/stdlib/src/erl_parse.yrl
+++ b/lib/stdlib/src/erl_parse.yrl
@@ -35,7 +35,7 @@ tuple
%struct
record_expr record_tuple record_field record_fields
if_expr if_clause if_clauses case_expr cr_clause cr_clauses receive_expr
-fun_expr fun_clause fun_clauses
+fun_expr fun_clause fun_clauses atom_or_var integer_or_var
try_expr try_catch try_clause try_clauses query_expr
function_call argument_list
exprs guard
@@ -395,11 +395,17 @@ receive_expr -> 'receive' cr_clauses 'after' expr clause_body 'end' :
fun_expr -> 'fun' atom '/' integer :
{'fun',?line('$1'),{function,element(3, '$2'),element(3, '$4')}}.
-fun_expr -> 'fun' atom ':' atom '/' integer :
- {'fun',?line('$1'),{function,element(3, '$2'),element(3, '$4'),element(3,'$6')}}.
+fun_expr -> 'fun' atom_or_var ':' atom_or_var '/' integer_or_var :
+ {'fun',?line('$1'),{function,'$2','$4','$6'}}.
fun_expr -> 'fun' fun_clauses 'end' :
build_fun(?line('$1'), '$2').
+atom_or_var -> atom : '$1'.
+atom_or_var -> var : '$1'.
+
+integer_or_var -> integer : '$1'.
+integer_or_var -> var : '$1'.
+
fun_clauses -> fun_clause : ['$1'].
fun_clauses -> fun_clause ';' fun_clauses : ['$1' | '$3'].
diff --git a/lib/stdlib/src/erl_pp.erl b/lib/stdlib/src/erl_pp.erl
index 7dc19f2e9b..6b5aa951cf 100644
--- a/lib/stdlib/src/erl_pp.erl
+++ b/lib/stdlib/src/erl_pp.erl
@@ -457,8 +457,16 @@ lexpr({'fun',_,{function,F,A}}, _Prec, _Hook) ->
leaf(format("fun ~w/~w", [F,A]));
lexpr({'fun',_,{function,F,A},Extra}, _Prec, _Hook) ->
{force_nl,fun_info(Extra),leaf(format("fun ~w/~w", [F,A]))};
-lexpr({'fun',_,{function,M,F,A}}, _Prec, _Hook) ->
+lexpr({'fun',_,{function,M,F,A}}, _Prec, _Hook)
+ when is_atom(M), is_atom(F), is_integer(A) ->
+ %% For backward compatibility with pre-R15 abstract format.
leaf(format("fun ~w:~w/~w", [M,F,A]));
+lexpr({'fun',_,{function,M,F,A}}, _Prec, Hook) ->
+ %% New format in R15.
+ NameItem = lexpr(M, Hook),
+ CallItem = lexpr(F, Hook),
+ ArityItem = lexpr(A, Hook),
+ ["fun ",NameItem,$:,CallItem,$/,ArityItem];
lexpr({'fun',_,{clauses,Cs}}, _Prec, Hook) ->
{list,[{first,'fun',fun_clauses(Cs, Hook)},'end']};
lexpr({'fun',_,{clauses,Cs},Extra}, _Prec, Hook) ->
diff --git a/lib/stdlib/src/qlc.erl b/lib/stdlib/src/qlc.erl
index f5e180b4bd..2b691e6abf 100644
--- a/lib/stdlib/src/qlc.erl
+++ b/lib/stdlib/src/qlc.erl
@@ -1272,7 +1272,10 @@ abstr_term(Fun, Line) when is_function(Fun) ->
case erlang:fun_info(Fun, type) of
{type, external} ->
{module, Module} = erlang:fun_info(Fun, module),
- {'fun', Line, {function,Module,Name,Arity}};
+ {'fun', Line, {function,
+ {atom,Line,Module},
+ {atom,Line,Name},
+ {integer,Line,Arity}}};
{type, local} ->
{'fun', Line, {function,Name,Arity}}
end
diff --git a/lib/stdlib/test/erl_eval_SUITE.erl b/lib/stdlib/test/erl_eval_SUITE.erl
index 784c7cb86e..369d8b224e 100644
--- a/lib/stdlib/test/erl_eval_SUITE.erl
+++ b/lib/stdlib/test/erl_eval_SUITE.erl
@@ -1036,6 +1036,12 @@ funs(Config) when is_list(Config) ->
lists:usort([run_many_args(SAs) || SAs <- many_args(MaxArgs)]),
?line {'EXIT',{{argument_limit,_},_}} =
(catch run_many_args(many_args1(MaxArgs+1))),
+
+ ?line check(fun() -> M = lists, F = fun M:reverse/1,
+ [1,2] = F([2,1]), ok end,
+ "begin M = lists, F = fun M:reverse/1,"
+ " [1,2] = F([2,1]), ok end.",
+ ok),
ok.
run_many_args({S, As}) ->
diff --git a/lib/stdlib/test/erl_pp_SUITE.erl b/lib/stdlib/test/erl_pp_SUITE.erl
index 280c95b1aa..64853ca078 100644
--- a/lib/stdlib/test/erl_pp_SUITE.erl
+++ b/lib/stdlib/test/erl_pp_SUITE.erl
@@ -116,7 +116,6 @@ func(Config) when is_list(Config) ->
{func_3,
<<"t() -> fun t/0.">>},
{func_4,
- %% Has already been expanded away in sys_pre_expand.
<<"t() -> fun modul:foo/3.">>},
{func_5, % 'when' is moved down one line
<<"tkjlksjflksdjflsdjlk()
@@ -127,7 +126,9 @@ func(Config) when is_list(Config) ->
<<"t() ->
(fun() ->
true
- end)().">>}
+ end)().">>},
+ {func_7,
+ <<"t(M, F, A) -> fun M:F/A.">>}
],
?line compile(Config, Ts),
ok.
diff --git a/lib/stdlib/test/qlc_SUITE.erl b/lib/stdlib/test/qlc_SUITE.erl
index 98eeaee118..8a9d8f7883 100644
--- a/lib/stdlib/test/qlc_SUITE.erl
+++ b/lib/stdlib/test/qlc_SUITE.erl
@@ -6632,7 +6632,7 @@ otp_7232(Config) when is_list(Config) ->
{call,_,
{remote,_,{atom,_,qlc},{atom,_,sort}},
[{cons,_,
- {'fun',_,{function,math,sqrt,_}},
+ {'fun',_,{function,{atom,_,math},{atom,_,sqrt},_}},
{cons,_,
{string,_,\"<0.4.1>\"}, % could use list_to_pid..
{cons,_,{string,_,\"#Ref<\"++_},{nil,_}}}},
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-04 05:01:12 +0000