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authorBjörn Gustavsson <[email protected]>2018-04-04 14:10:21 +0200
committerGitHub <[email protected]>2018-04-04 14:10:21 +0200
commitdb1447e1423aaaafa02d52ca0b57115631990780 (patch)
treeafa43c1de02f6156535ce991470db9af648bc4d5 /erts
parentf99860259ee557851acc865519a315f04d1d4d51 (diff)
parent63e1c58d27ab695a19897423fc75e607f69ff51b (diff)
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Merge pull request #1725 from michalmuskala/fun-literals
Compile external fun expressions to literals OTP-15003
Diffstat (limited to 'erts')
-rw-r--r--erts/emulator/beam/beam_load.c13
-rw-r--r--erts/emulator/beam/erl_printf_term.c7
-rw-r--r--erts/emulator/beam/ops.tab3
-rw-r--r--erts/emulator/test/beam_literals_SUITE.erl55
4 files changed, 57 insertions, 21 deletions
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index af620d7432..e61199a8fd 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -4522,6 +4522,19 @@ is_empty_map(LoaderState* stp, GenOpArg Lit)
}
/*
+ * Predicate to test whether the given literal is an export.
+ */
+static int
+literal_is_export(LoaderState* stp, GenOpArg Lit)
+{
+ Eterm term;
+
+ ASSERT(Lit.type == TAG_q);
+ term = stp->literals[Lit.val].term;
+ return is_export(term);
+}
+
+/*
* Pseudo predicate map_key_sort that will sort the Rest operand for
* map instructions as a side effect.
*/
diff --git a/erts/emulator/beam/erl_printf_term.c b/erts/emulator/beam/erl_printf_term.c
index e6f8460164..910f241a3a 100644
--- a/erts/emulator/beam/erl_printf_term.c
+++ b/erts/emulator/beam/erl_printf_term.c
@@ -532,14 +532,13 @@ print_term(fmtfn_t fn, void* arg, Eterm obj, long *dcount) {
Atom* module = atom_tab(atom_val(ep->info.mfa.module));
Atom* name = atom_tab(atom_val(ep->info.mfa.function));
- PRINT_STRING(res, fn, arg, "#Fun<");
+ PRINT_STRING(res, fn, arg, "fun ");
PRINT_BUF(res, fn, arg, module->name, module->len);
- PRINT_CHAR(res, fn, arg, '.');
+ PRINT_CHAR(res, fn, arg, ':');
PRINT_BUF(res, fn, arg, name->name, name->len);
- PRINT_CHAR(res, fn, arg, '.');
+ PRINT_CHAR(res, fn, arg, '/');
PRINT_SWORD(res, fn, arg, 'd', 0, 1,
(ErlPfSWord) ep->info.mfa.arity);
- PRINT_CHAR(res, fn, arg, '>');
}
break;
case FUN_DEF:
diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab
index bc765a8c94..8b2d9098a8 100644
--- a/erts/emulator/beam/ops.tab
+++ b/erts/emulator/beam/ops.tab
@@ -710,7 +710,8 @@ is_boolean Fail=f ac => jump Fail
is_boolean f? xy
%hot
-is_function2 Fail=f acq Arity => jump Fail
+is_function2 Fail=f Literal=q Arity | literal_is_export(Literal) =>
+is_function2 Fail=f c Arity => jump Fail
is_function2 Fail=f Fun a => jump Fail
is_function2 f? S s
diff --git a/erts/emulator/test/beam_literals_SUITE.erl b/erts/emulator/test/beam_literals_SUITE.erl
index 09761263e2..b447ca0210 100644
--- a/erts/emulator/test/beam_literals_SUITE.erl
+++ b/erts/emulator/test/beam_literals_SUITE.erl
@@ -248,35 +248,58 @@ literal_type_tests(Config) when is_list(Config) ->
ok.
make_test([{is_function=T,L}|Ts]) ->
- [test(T, L),test(T, 0, L)|make_test(Ts)];
+ [guard_test(T, L),guard_test(T, 0, L),body_test(T, L),body_test(T, 0, L)|make_test(Ts)];
make_test([{T,L}|Ts]) ->
- [test(T, L)|make_test(Ts)];
+ [guard_test(T, L),body_test(T, L)|make_test(Ts)];
make_test([]) -> [].
-test(T, L) ->
- S = lists:flatten(io_lib:format("begin io:format(\"~~p~n\", [{~p,~p}]), if ~w(~w) -> true; true -> false end end. ", [T, L, T, L])),
- {ok,Toks,_Line} = erl_scan:string(S),
- {ok,E} = erl_parse:parse_exprs(Toks),
- {value,Val,_Bs} = erl_eval:exprs(E, []),
+guard_test(_, L) when is_function(L) ->
+ %% Skip guard tests with exports - they are not literals
+ {atom,erl_anno:new(0),true};
+guard_test(T, L) ->
+ S = io_lib:format("begin io:format(\"~~p~n\", [{~p,~p}]), if ~w(~w) -> true; true -> false end end. ", [T, L, T, L]),
+ {Val,Expr} = eval_string(S),
+ Anno = erl_anno:new(0),
+ {match,Anno,{atom,Anno,Val},Expr}.
+
+guard_test(_, _, L) when is_function(L) ->
+ %% Skip guard tests with exports - they are not literals
+ {atom,erl_anno:new(0),true};
+guard_test(T, A, L) ->
+ S = io_lib:format("begin io:format(\"~~p~n\", [{~p,~p,~p}]), if ~w(~w, ~w) -> true; true -> false end end. ", [T,L,A,T,L,A]),
+ {Val,Expr} = eval_string(S),
+ Anno = erl_anno:new(0),
+ {match,Anno,{atom,Anno,Val},Expr}.
+
+body_test(T, L) ->
+ S = io_lib:format("begin io:format(\"~~p~n\", [{~p,~p}]), ~w(~w) end. ", [T,L,T,L]),
+ {Val,Expr} = eval_string(S),
Anno = erl_anno:new(0),
- {match,Anno,{atom,Anno,Val},hd(E)}.
+ {match,Anno,{atom,Anno,Val},Expr}.
-test(T, A, L) ->
- S = lists:flatten(io_lib:format("begin io:format(\"~~p~n\", [{~p,~p,~p}]), if ~w(~w, ~w) -> true; true -> false end end. ",
- [T,L,A,T,L,A])),
- {ok,Toks,_Line} = erl_scan:string(S),
+body_test(T, A, L) ->
+ S = io_lib:format("begin io:format(\"~~p~n\", [{~p,~p,~p}]), ~w(~w,~w) end. ", [T,L,A,T,L,A]),
+ {Val,Expr} = eval_string(S),
+ Anno = erl_anno:new(0),
+ {match,Anno,{atom,Anno,Val},Expr}.
+
+eval_string(S) ->
+ {ok,Toks,_Line} = erl_scan:string(lists:flatten(S)),
{ok,E} = erl_parse:parse_exprs(Toks),
{value,Val,_Bs} = erl_eval:exprs(E, []),
- Anno = erl_anno:new(0),
- {match,Anno,{atom,Anno,Val},hd(E)}.
-
+ {Val,hd(E)}.
+
literals() ->
[42,
3.14,
-3,
32982724987789283473473838474,
[],
- xxxx].
+ "abc",
+ <<"abc">>,
+ {},
+ xxxx,
+ fun erlang:erase/0].
type_tests() ->
[is_boolean,