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-rw-r--r--lib/compiler/src/sys_pre_expand.erl14
-rw-r--r--lib/compiler/src/v3_core.erl68
-rw-r--r--lib/compiler/test/fun_SUITE.erl13
3 files changed, 71 insertions, 24 deletions
diff --git a/lib/compiler/src/sys_pre_expand.erl b/lib/compiler/src/sys_pre_expand.erl
index 7d918a55ed..48d9c16718 100644
--- a/lib/compiler/src/sys_pre_expand.erl
+++ b/lib/compiler/src/sys_pre_expand.erl
@@ -344,6 +344,8 @@ expr({'receive',Line,Cs0,To0,ToEs0}, St0) ->
{{'receive',Line,Cs,To,ToEs},St3};
expr({'fun',Line,Body}, St) ->
fun_tq(Line, Body, St);
+expr({named_fun,Line,Name,Cs}, St) ->
+ fun_tq(Line, Cs, St, Name);
expr({call,Line,{atom,La,N}=Atom,As0}, St0) ->
{As,St1} = expr_list(As0, St0),
Ar = length(As),
@@ -475,6 +477,11 @@ fun_tq(Lf, {clauses,Cs0}, St0) ->
Index = Uniq = 0,
{{'fun',Lf,{clauses,Cs1},{Index,Uniq,Fname}},St2}.
+fun_tq(Line, Cs0, St0, Name) ->
+ {Cs1,St1} = fun_clauses(Cs0, St0),
+ {Fname,St2} = new_fun_name(St1, Name),
+ {{named_fun,Line,Name,Cs1,{0,0,Fname}},St2}.
+
fun_clauses([{clause,L,H0,G0,B0}|Cs0], St0) ->
{H,St1} = head(H0, St0),
{G,St2} = guard(G0, St1),
@@ -485,9 +492,12 @@ fun_clauses([], St) -> {[],St}.
%% new_fun_name(State) -> {FunName,State}.
-new_fun_name(#expand{func=F,arity=A,fcount=I}=St) ->
+new_fun_name(St) ->
+ new_fun_name(St, 'fun').
+
+new_fun_name(#expand{func=F,arity=A,fcount=I}=St, FName) ->
Name = "-" ++ atom_to_list(F) ++ "/" ++ integer_to_list(A)
- ++ "-fun-" ++ integer_to_list(I) ++ "-",
+ ++ "-" ++ atom_to_list(FName) ++ "-" ++ integer_to_list(I) ++ "-",
{list_to_atom(Name),St#expand{fcount=I+1}}.
%% pattern_bin([Element], State) -> {[Element],[Variable],[UsedVar],State}.
diff --git a/lib/compiler/src/v3_core.erl b/lib/compiler/src/v3_core.erl
index 33f5015e0b..321cf7af1c 100644
--- a/lib/compiler/src/v3_core.erl
+++ b/lib/compiler/src/v3_core.erl
@@ -92,7 +92,7 @@
-record(icase, {anno=#a{},args,clauses,fc}).
-record(icatch, {anno=#a{},body}).
-record(iclause, {anno=#a{},pats,pguard=[],guard,body}).
--record(ifun, {anno=#a{},id,vars,clauses,fc}).
+-record(ifun, {anno=#a{},id,vars,clauses,fc,name=unnamed}).
-record(iletrec, {anno=#a{},defs,body}).
-record(imatch, {anno=#a{},pat,guard=[],arg,fc}).
-record(iprimop, {anno=#a{},name,args}).
@@ -587,7 +587,11 @@ expr({'fun',L,{function,M,F,A}}, St0) ->
name=#c_literal{val=make_fun},
args=As},Aps,St1};
expr({'fun',L,{clauses,Cs},Id}, St) ->
- fun_tq(Id, Cs, L, St);
+ fun_tq(Id, Cs, L, St, unnamed);
+expr({named_fun,L,'_',Cs,Id}, St) ->
+ fun_tq(Id, Cs, L, St, unnamed);
+expr({named_fun,L,Name,Cs,{Index,Uniq,_Fname}}, St) ->
+ fun_tq({Index,Uniq,Name}, Cs, L, St, {named, Name});
expr({call,L,{remote,_,M,F},As0}, #core{wanted=Wanted}=St0) ->
{[M1,F1|As1],Aps,St1} = safe_list([M,F|As0], St0),
Lanno = lineno_anno(L, St1),
@@ -842,9 +846,9 @@ bitstr({bin_element,_,E0,Size0,[Type,{unit,Unit}|Flags]}, St0) ->
flags=#c_literal{val=Flags}},
Eps ++ Eps2,St2}.
-%% fun_tq(Id, [Clauses], Line, State) -> {Fun,[PreExp],State}.
+%% fun_tq(Id, [Clauses], Line, State, NameInfo) -> {Fun,[PreExp],State}.
-fun_tq({_,_,Name}=Id, Cs0, L, St0) ->
+fun_tq({_,_,Name}=Id, Cs0, L, St0, NameInfo) ->
Arity = clause_arity(hd(Cs0)),
{Cs1,St1} = clauses(Cs0, St0),
{Args,St2} = new_vars(Arity, St1),
@@ -853,7 +857,7 @@ fun_tq({_,_,Name}=Id, Cs0, L, St0) ->
Fc = function_clause(Ps, Anno, {Name,Arity}),
Fun = #ifun{anno=#a{anno=Anno},
id=[{id,Id}], %We KNOW!
- vars=Args,clauses=Cs1,fc=Fc},
+ vars=Args,clauses=Cs1,fc=Fc,name=NameInfo},
{Fun,[],St3}.
%% lc_tq(Line, Exp, [Qualifier], Mc, State) -> {LetRec,[PreExp],State}.
@@ -1711,13 +1715,18 @@ uexpr(#icase{anno=A,args=As0,clauses=Cs0,fc=Fc0}, Ks, St0) ->
Used = union(used_in_any(As1), used_in_any(Cs1)),
New = new_in_all(Cs1),
{#icase{anno=A#a{us=Used,ns=New},args=As1,clauses=Cs1,fc=Fc1},St3};
-uexpr(#ifun{anno=A,id=Id,vars=As,clauses=Cs0,fc=Fc0}, Ks0, St0) ->
+uexpr(#ifun{anno=A0,id=Id,vars=As,clauses=Cs0,fc=Fc0,name=Name}, Ks0, St0) ->
Avs = lit_list_vars(As),
- Ks1 = union(Avs, Ks0),
- {Cs1,St1} = ufun_clauses(Cs0, Ks1, St0),
- {Fc1,St2} = ufun_clause(Fc0, Ks1, St1),
- Used = subtract(intersection(used_in_any(Cs1), Ks0), Avs),
- {#ifun{anno=A#a{us=Used,ns=[]},id=Id,vars=As,clauses=Cs1,fc=Fc1},St2};
+ Ks1 = case Name of
+ unnamed -> Ks0;
+ {named,FName} -> union(subtract([FName], Avs), Ks0)
+ end,
+ Ks2 = union(Avs, Ks1),
+ {Cs1,St1} = ufun_clauses(Cs0, Ks2, St0),
+ {Fc1,St2} = ufun_clause(Fc0, Ks2, St1),
+ Used = subtract(intersection(used_in_any(Cs1), Ks1), Avs),
+ A1 = A0#a{us=Used,ns=[]},
+ {#ifun{anno=A1,id=Id,vars=As,clauses=Cs1,fc=Fc1,name=Name},St2};
uexpr(#iapply{anno=A,op=Op,args=As}, _, St) ->
Used = union(lit_vars(Op), lit_list_vars(As)),
{#iapply{anno=A#a{us=Used},op=Op,args=As},St};
@@ -2012,15 +2021,24 @@ cexpr(#itry{anno=A,args=La,vars=Vs,body=Lb,evars=Evs,handler=Lh}, As, St0) ->
cexpr(#icatch{anno=A,body=Les}, _As, St0) ->
{Ces,_Us1,St1} = cexprs(Les, [], St0), %Never export!
{#c_catch{body=Ces},[],A#a.us,St1};
-cexpr(#ifun{anno=A,id=Id,vars=Args,clauses=Lcs,fc=Lfc}, _As, St0) ->
- {Ccs,St1} = cclauses(Lcs, [], St0), %NEVER export!
- {Cfc,St2} = cclause(Lfc, [], St1),
- Anno = A#a.anno,
- {#c_fun{anno=Id++Anno,vars=Args,
- body=#c_case{anno=Anno,
- arg=set_anno(core_lib:make_values(Args), Anno),
- clauses=Ccs ++ [Cfc]}},
- [],A#a.us,St2};
+cexpr(#ifun{name=unnamed}=Fun, As, St0) ->
+ cfun(Fun, As, St0);
+cexpr(#ifun{anno=#a{us=Us0}=A0,name={named,Name},fc=#iclause{pats=Ps}}=Fun0,
+ As, St0) ->
+ case is_element(Name, Us0) of
+ false ->
+ cfun(Fun0, As, St0);
+ true ->
+ A1 = A0#a{us=del_element(Name, Us0)},
+ Fun1 = Fun0#ifun{anno=A1},
+ {#c_fun{body=Body}=CFun0,[],Us1,St1} = cfun(Fun1, As, St0),
+ RecVar = #c_var{name={Name,length(Ps)}},
+ Let = #c_let{vars=[#c_var{name=Name}],arg=RecVar,body=Body},
+ CFun1 = CFun0#c_fun{body=Let},
+ Letrec = #c_letrec{defs=[{RecVar,CFun1}],
+ body=RecVar},
+ {Letrec,[],Us1,St1}
+ end;
cexpr(#iapply{anno=A,op=Op,args=Args}, _As, St) ->
{#c_apply{anno=A#a.anno,op=Op,args=Args},[],A#a.us,St};
cexpr(#icall{anno=A,module=Mod,name=Name,args=Args}, _As, St) ->
@@ -2047,6 +2065,16 @@ cexpr(Lit, _As, St) ->
%%Vs = lit_vars(Lit),
{set_anno(Lit, Anno#a.anno),[],Vs,St}.
+cfun(#ifun{anno=A,id=Id,vars=Args,clauses=Lcs,fc=Lfc}, _As, St0) ->
+ {Ccs,St1} = cclauses(Lcs, [], St0), %NEVER export!
+ {Cfc,St2} = cclause(Lfc, [], St1),
+ Anno = A#a.anno,
+ {#c_fun{anno=Id++Anno,vars=Args,
+ body=#c_case{anno=Anno,
+ arg=set_anno(core_lib:make_values(Args), Anno),
+ clauses=Ccs ++ [Cfc]}},
+ [],A#a.us,St2}.
+
%% lit_vars(Literal) -> [Var].
lit_vars(Lit) -> lit_vars(Lit, []).
diff --git a/lib/compiler/test/fun_SUITE.erl b/lib/compiler/test/fun_SUITE.erl
index 6067ee8e06..e35692efd1 100644
--- a/lib/compiler/test/fun_SUITE.erl
+++ b/lib/compiler/test/fun_SUITE.erl
@@ -21,7 +21,7 @@
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
test1/1,overwritten_fun/1,otp_7202/1,bif_fun/1,
- external/1]).
+ external/1,eep37/1]).
%% Internal export.
-export([call_me/1]).
@@ -32,7 +32,7 @@ suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
test_lib:recompile(?MODULE),
- [test1,overwritten_fun,otp_7202,bif_fun,external].
+ [test1,overwritten_fun,otp_7202,bif_fun,external,eep37].
groups() ->
[].
@@ -197,5 +197,14 @@ external(Config) when is_list(Config) ->
call_me(I) ->
{ok,I}.
+eep37(Config) when is_list(Config) ->
+ F = fun Fact(N) when N > 0 -> N * Fact(N - 1); Fact(0) -> 1 end,
+ Add = fun _(N) -> N + 1 end,
+ UnusedName = fun BlackAdder(N) -> N + 42 end,
+ 720 = F(6),
+ 10 = Add(9),
+ 50 = UnusedName(8),
+ ok.
+
id(I) ->
I.
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-25 17:24:00 +0000