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-rw-r--r--lib/compiler/src/v3_core.erl21
-rw-r--r--lib/compiler/src/v3_kernel.erl13
-rw-r--r--lib/mnesia/test/mnesia_frag_test.erl4
-rw-r--r--lib/orber/src/orber_interceptors.erl11
-rw-r--r--lib/ssh/src/ssh_sftpd.erl2
-rw-r--r--lib/wx/api_gen/wx_gen.erl10
6 files changed, 17 insertions, 44 deletions
diff --git a/lib/compiler/src/v3_core.erl b/lib/compiler/src/v3_core.erl
index 59863f52ec..291443f824 100644
--- a/lib/compiler/src/v3_core.erl
+++ b/lib/compiler/src/v3_core.erl
@@ -74,7 +74,7 @@
-export([module/2,format_error/1]).
-import(lists, [reverse/1,reverse/2,map/2,member/2,foldl/3,foldr/3,mapfoldl/3,
- splitwith/2,keyfind/3,sort/1,foreach/2]).
+ splitwith/2,keyfind/3,sort/1,foreach/2,droplast/1,last/1]).
-import(ordsets, [add_element/2,del_element/2,is_element/2,
union/1,union/2,intersection/2,subtract/2]).
-import(cerl, [ann_c_cons/3,ann_c_cons_skel/3,ann_c_tuple/2,c_tuple/1]).
@@ -226,13 +226,13 @@ guard(Gs0, St0) ->
Gt1 = guard_tests(Gt0),
L = element(2, Gt1),
{op,L,'or',Gt1,Rhs}
- end, guard_tests(last(Gs0)), first(Gs0)),
+ end, guard_tests(last(Gs0)), droplast(Gs0)),
{Gs,St} = gexpr_top(Gs1, St0#core{in_guard=true}),
{Gs,St#core{in_guard=false}}.
guard_tests(Gs) ->
L = element(2, hd(Gs)),
- {protect,L,foldr(fun (G, Rhs) -> {op,L,'and',G,Rhs} end, last(Gs), first(Gs))}.
+ {protect,L,foldr(fun (G, Rhs) -> {op,L,'and',G,Rhs} end, last(Gs), droplast(Gs))}.
%% gexpr_top(Expr, State) -> {Cexpr,State}.
%% Generate an internal core expression of a guard test. Explicitly
@@ -513,7 +513,7 @@ expr({bin,L,Es0}, St0) ->
end;
expr({block,_,Es0}, St0) ->
%% Inline the block directly.
- {Es1,St1} = exprs(first(Es0), St0),
+ {Es1,St1} = exprs(droplast(Es0), St0),
{E1,Eps,St2} = expr(last(Es0), St1),
{E1,Es1 ++ Eps,St2};
expr({'if',L,Cs0}, St0) ->
@@ -1588,15 +1588,6 @@ pat_alias_list(_, _) -> throw(nomatch).
pattern_list(Ps, St) -> [pattern(P, St) || P <- Ps].
-%% first([A]) -> [A].
-%% last([A]) -> A.
-
-first([_]) -> [];
-first([H|T]) -> [H|first(T)].
-
-last([L]) -> L;
-last([_|T]) -> last(T).
-
%% make_vars([Name]) -> [{Var,Name}].
make_vars(Vs) -> [ #c_var{name=V} || V <- Vs ].
@@ -1679,13 +1670,13 @@ uclause(#iclause{anno=Anno,pats=Ps0,guard=G0,body=B0}, Pks, Ks0, St0) ->
uguard([], [], _, St) -> {[],St};
uguard(Pg, [], Ks, St) ->
%% No guard, so fold together equality tests.
- uguard(first(Pg), [last(Pg)], Ks, St);
+ uguard(droplast(Pg), [last(Pg)], Ks, St);
uguard(Pg, Gs0, Ks, St0) ->
%% Gs0 must contain at least one element here.
{Gs3,St5} = foldr(fun (T, {Gs1,St1}) ->
{L,St2} = new_var(St1),
{R,St3} = new_var(St2),
- {[#iset{var=L,arg=T}] ++ first(Gs1) ++
+ {[#iset{var=L,arg=T}] ++ droplast(Gs1) ++
[#iset{var=R,arg=last(Gs1)},
#icall{anno=#a{}, %Must have an #a{}
module=#c_literal{val=erlang},
diff --git a/lib/compiler/src/v3_kernel.erl b/lib/compiler/src/v3_kernel.erl
index 9a2b1605ad..6c8089e61d 100644
--- a/lib/compiler/src/v3_kernel.erl
+++ b/lib/compiler/src/v3_kernel.erl
@@ -81,7 +81,7 @@
-export([module/2,format_error/1]).
-import(lists, [map/2,foldl/3,foldr/3,mapfoldl/3,splitwith/2,member/2,
- keymember/3,keyfind/3,partition/2]).
+ keymember/3,keyfind/3,partition/2,droplast/1,last/1]).
-import(ordsets, [add_element/2,del_element/2,union/2,union/1,subtract/2]).
-import(cerl, [c_tuple/1]).
@@ -351,7 +351,7 @@ expr(#c_case{arg=Ca,clauses=Ccs}, Sub, St0) ->
{Kvs,Pv,St2} = match_vars(Ka, St1), %Must have variables here!
{Km,St3} = kmatch(Kvs, Ccs, Sub, St2),
Match = flatten_seq(build_match(Kvs, Km)),
- {last(Match),Pa ++ Pv ++ first(Match),St3};
+ {last(Match),Pa ++ Pv ++ droplast(Match),St3};
expr(#c_receive{anno=A,clauses=Ccs0,timeout=Ce,action=Ca}, Sub, St0) ->
{Ke,Pe,St1} = atomic(Ce, Sub, St0), %Force this to be atomic!
{Rvar,St2} = new_var(St1),
@@ -847,15 +847,6 @@ foldr2(Fun, Acc0, [E1|L1], [E2|L2]) ->
foldr2(Fun, Acc1, L1, L2);
foldr2(_, Acc, [], []) -> Acc.
-%% first([A]) -> [A].
-%% last([A]) -> A.
-
-last([L]) -> L;
-last([_|T]) -> last(T).
-
-first([_]) -> [];
-first([H|T]) -> [H|first(T)].
-
%% This code implements the algorithm for an optimizing compiler for
%% pattern matching given "The Implementation of Functional
%% Programming Languages" by Simon Peyton Jones. The code is much
diff --git a/lib/mnesia/test/mnesia_frag_test.erl b/lib/mnesia/test/mnesia_frag_test.erl
index d3f6762af7..6695fbc880 100644
--- a/lib/mnesia/test/mnesia_frag_test.erl
+++ b/lib/mnesia/test/mnesia_frag_test.erl
@@ -461,7 +461,7 @@ nice_iter_access(Tab, FragNames, RawRead) ->
ExpectedLast = lists:last(Keys),
?match(ExpectedLast, mnesia:last(Tab)),
- ExpectedAllPrev = ['$end_of_table' | lists:reverse(tl(lists:reverse(Keys)))],
+ ExpectedAllPrev = ['$end_of_table' | lists:droplast(Keys)],
?match(ExpectedAllPrev, lists:map(fun(K) -> mnesia:prev(Tab, K) end, Keys)),
ExpectedAllNext = tl(Keys) ++ ['$end_of_table'],
@@ -477,7 +477,7 @@ evil_iter_access(Tab, FragNames, RawRead) ->
ExpectedLast = lists:last(Keys),
?match(ExpectedLast, mnesia:last(Tab)),
- ExpectedAllPrev = ['$end_of_table' | lists:reverse(tl(lists:reverse(Keys)))],
+ ExpectedAllPrev = ['$end_of_table' | lists:droplast(Keys)],
?match(ExpectedAllPrev, lists:map(fun(K) -> mnesia:prev(Tab, K) end, Keys)),
ExpectedAllNext = tl(Keys) ++ ['$end_of_table'],
diff --git a/lib/orber/src/orber_interceptors.erl b/lib/orber/src/orber_interceptors.erl
index 407823ea79..62870b35b5 100644
--- a/lib/orber/src/orber_interceptors.erl
+++ b/lib/orber/src/orber_interceptors.erl
@@ -112,7 +112,7 @@ pop_system_message_interceptor(out) ->
[{_, []}] ->
ok;
[{_, Interceptors}] ->
- ets:insert(orber_interceptors, {message_out_interceptors, remove_last_element(Interceptors)});
+ ets:insert(orber_interceptors, {message_out_interceptors, lists:droplast(Interceptors)});
_ ->
corba:raise(#'INTERNAL'{completion_status=?COMPLETED_NO})
end.
@@ -151,12 +151,3 @@ apply_message_interceptors([], F, ObjRef, Bytes) ->
apply_message_interceptors([M | Rest], F, ObjRef, Bytes) ->
apply_message_interceptors(Rest, F, ObjRef, apply(M, F, [ObjRef, Bytes])).
-
-remove_last_element([]) ->
- [];
-remove_last_element([M]) ->
- [];
-remove_last_element([M |Tail]) ->
- remove_last_element([Tail]).
-
-
diff --git a/lib/ssh/src/ssh_sftpd.erl b/lib/ssh/src/ssh_sftpd.erl
index 213b5c714d..52665635f0 100644
--- a/lib/ssh/src/ssh_sftpd.erl
+++ b/lib/ssh/src/ssh_sftpd.erl
@@ -673,7 +673,7 @@ resolve_symlinks_2(["." | RestPath], State0, LinkCnt, AccPath) ->
resolve_symlinks_2([".." | RestPath], State0, LinkCnt, AccPath) ->
%% Remove the last path component
AccPathComps0 = filename:split(AccPath),
- Path = case lists:reverse(tl(lists:reverse(AccPathComps0))) of
+ Path = case lists:droplast(AccPathComps0) of
[] ->
"";
AccPathComps ->
diff --git a/lib/wx/api_gen/wx_gen.erl b/lib/wx/api_gen/wx_gen.erl
index 3ca8cd7d14..0f28b3dd5e 100644
--- a/lib/wx/api_gen/wx_gen.erl
+++ b/lib/wx/api_gen/wx_gen.erl
@@ -25,7 +25,7 @@
-include_lib("xmerl/include/xmerl.hrl").
--import(lists, [foldl/3,foldr/3,reverse/1, keysearch/3, map/2, filter/2]).
+-import(lists, [foldl/3,foldr/3,reverse/1,keysearch/3,map/2,filter/2,droplast/1]).
-import(proplists, [get_value/2,get_value/3]).
-compile(export_all).
@@ -69,7 +69,7 @@ gen_code() ->
gen_xml() ->
%% {ok, Defs} = file:consult("wxapi.conf"),
-%% Rel = reverse(tl(reverse(os:cmd("wx-config --release")))),
+%% Rel = droplast(os:cmd("wx-config --release")),
%% Dir = " /usr/include/wx-" ++ Rel ++ "/wx/",
%% Files0 = [Dir ++ File || {class, File, _, _, _} <- Defs],
%% Files1 = [Dir ++ File || {doxygen, File} <- Defs],
@@ -172,7 +172,7 @@ parse_defs([], Acc) -> reverse(Acc).
meta_info(C=#class{name=CName,methods=Ms0}) ->
Ms = lists:append(Ms0),
HaveConstructor = lists:keymember(constructor, #method.method_type, Ms),
- case lists:keysearch(destructor, #method.method_type, Ms) of
+ case keysearch(destructor, #method.method_type, Ms) of
false when HaveConstructor ->
Dest = #method{name = "destroy", id = next_id(func_id),
method_type = destructor, params = [this(CName)]},
@@ -288,7 +288,7 @@ parse_attr1([{{attr,_}, #xmlElement{content=C, attributes=Attrs}}|R], AttrList0,
parse_attr1([{_Id,_}|R],AttrList,Info, Res) ->
parse_attr1(R,AttrList,Info, Res);
parse_attr1([],Left,_, Res) ->
- {lists:reverse(Res), Left}.
+ {reverse(Res), Left}.
attr_acc(#param{name=N}, List) ->
Name = list_to_atom(N),
@@ -994,7 +994,7 @@ erl_skip_opt2([F={_,{N,In,_},M=#method{where=Where}}|Ms],Acc1,Acc2,Check) ->
[] ->
erl_skip_opt2(Ms,[F|Acc1],[M#method{where=erl_no_opt}|Acc2],[]);
_ ->
- Skipped = reverse(tl(reverse(In))),
+ Skipped = droplast(In),
T = fun({_,{_,Args,_},_}) -> true =:= types_differ(Skipped,Args) end,
case lists:all(T, Check) of
true ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-04 05:08:39 +0000