diff options
Diffstat (limited to 'lib/compiler/src/v3_kernel.erl')
| -rw-r--r-- | lib/compiler/src/v3_kernel.erl | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/lib/compiler/src/v3_kernel.erl b/lib/compiler/src/v3_kernel.erl index b1bff47f69..5f1c108f7c 100644 --- a/lib/compiler/src/v3_kernel.erl +++ b/lib/compiler/src/v3_kernel.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1999-2012. All Rights Reserved. +%% Copyright Ericsson AB 1999-2013. 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 @@ -235,8 +235,16 @@ gexpr_test_add(Ke, St0) -> %% expr(Cexpr, Sub, State) -> {Kexpr,[PreKexpr],State}. %% Convert a Core expression, flattening it at the same time. -expr(#c_var{anno=A,name={Name,Arity}}, Sub, St) -> - {#k_local{anno=A,name=get_fsub(Name, Arity, Sub),arity=Arity},[],St}; +expr(#c_var{anno=A,name={_Name,Arity}}=Fname, Sub, St) -> + %% A local in an expression. + %% For now, these are wrapped into a fun by reverse + %% etha-conversion, but really, there should be exactly one + %% such "lambda function" for each escaping local name, + %% instead of one for each occurrence as done now. + Vs = [#c_var{name=list_to_atom("V" ++ integer_to_list(V))} || + V <- integers(1, Arity)], + Fun = #c_fun{anno=A,vars=Vs,body=#c_apply{anno=A,op=Fname,args=Vs}}, + expr(Fun, Sub, St); expr(#c_var{anno=A,name=V}, Sub, St) -> {#k_var{anno=A,name=get_vsub(V, Sub)},[],St}; expr(#c_literal{anno=A,val=V}, _Sub, St) -> @@ -1655,19 +1663,6 @@ uexpr(#ifun{anno=A,vars=Vs,body=B0}, {break,Rs}, St0) -> #k_int{val=Index},#k_int{val=Uniq}|Fvs], ret=Rs}, Free,add_local_function(Fun, St)}; -uexpr(#k_local{anno=A,name=Name,arity=Arity}, {break,Rs}, St) -> - Fs = get_free(Name, Arity, St), - FsCount = length(Fs), - Free = lit_list_vars(Fs), - %% Set dummy values for Index and Uniq -- the real values will - %% be assigned by beam_asm. - Index = Uniq = 0, - Bif = #k_bif{anno=#k{us=Free,ns=lit_list_vars(Rs),a=A}, - op=#k_internal{name=make_fun,arity=FsCount+3}, - args=[#k_atom{val=Name},#k_int{val=FsCount+Arity}, - #k_int{val=Index},#k_int{val=Uniq}|Fs], - ret=Rs}, - {Bif,Free,St}; uexpr(Lit, {break,Rs0}, St0) -> %% Transform literals to puts here. %%ok = io:fwrite("uexpr ~w:~p~n", [?LINE,Lit]), @@ -1848,6 +1843,12 @@ make_list(Es) -> #c_cons{hd=E,tl=Acc} end, #c_literal{val=[]}, Es). +%% List of integers in interval [N,M]. Empty list if N > M. + +integers(N, M) when N =< M -> + [N|integers(N + 1, M)]; +integers(_, _) -> []. + %% is_in_guard(State) -> true|false. is_in_guard(#kern{guard_refc=Refc}) -> |