%% %% %CopyrightBegin% %% %% Copyright Ericsson AB 2006-2015. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. %% You may obtain a copy of the License at %% %% http://www.apache.org/licenses/LICENSE-2.0 %% %% Unless required by applicable law or agreed to in writing, software %% distributed under the License is distributed on an "AS IS" BASIS, %% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %% See the License for the specific language governing permissions and %% limitations under the License. %% %% %CopyrightEnd% %% %%%---------------------------------------------------------------- %%% Purpose:Test Suite for the 'erl_pp' module. %%%----------------------------------------------------------------- -module(erl_pp_SUITE). %-define(debug, true). -ifdef(debug). -define(line, put(line, ?LINE), ). -define(config(X,Y), foo). -define(datadir, "erl_pp_SUITE_data"). -define(privdir, "erl_pp_SUITE_priv"). -define(t, test_server). -else. -include_lib("common_test/include/ct.hrl"). -define(datadir, ?config(data_dir, Config)). -define(privdir, ?config(priv_dir, Config)). -endif. -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, init_per_group/2,end_per_group/2, init_per_testcase/2, end_per_testcase/2]). -export([ func/1, call/1, recs/1, try_catch/1, if_then/1, receive_after/1, bits/1, head_tail/1, cond1/1, block/1, case1/1, ops/1, messages/1, import_export/1, misc_attrs/1, dialyzer_attrs/1, hook/1, neg_indent/1, maps_syntax/1, otp_6321/1, otp_6911/1, otp_6914/1, otp_8150/1, otp_8238/1, otp_8473/1, otp_8522/1, otp_8567/1, otp_8664/1, otp_9147/1, otp_10302/1, otp_10820/1, otp_11100/1, otp_11861/1]). %% Internal export. -export([ehook/6]). init_per_testcase(_Case, Config) -> Config. end_per_testcase(_Case, _Config) -> ok. suite() -> [{ct_hooks,[ts_install_cth]}, {timetrap,{minutes,2}}]. all() -> [{group, expr}, {group, attributes}, hook, neg_indent, {group, tickets}]. groups() -> [{expr, [], [func, call, recs, try_catch, if_then, receive_after, bits, head_tail, cond1, block, case1, ops, messages, maps_syntax ]}, {attributes, [], [misc_attrs, import_export, dialyzer_attrs]}, {tickets, [], [otp_6321, otp_6911, otp_6914, otp_8150, otp_8238, otp_8473, otp_8522, otp_8567, otp_8664, otp_9147, otp_10302, otp_10820, otp_11100, otp_11861]}]. init_per_suite(Config) -> Config. end_per_suite(_Config) -> ok. init_per_group(_GroupName, Config) -> Config. end_per_group(_GroupName, Config) -> Config. func(suite) -> []; func(Config) when is_list(Config) -> Ts = [{func_1, <<"-record(r1, {a,b}). -record(r3, {a = fun(_) -> #r1{} end(1), b}). t() -> fun(A) when record(A#r3.a, r1) -> 7 end(#r3{}). ">>}, {func_2, <<"-record(r1, {a,b}). -record(r3, {a = fun(_) -> #r1{} end(1), b}). t() -> fsdfsdfjsdfjkljf:sdlfjdsfjlf( fun(sdfsd) -> {sdkjsdf,sdfjsdkljfsdl,sdfkjdklf} end). ">>}, {func_3, <<"t() -> fun t/0.">>}, {func_4, <<"t() -> fun modul:foo/3.">>}, {func_5, % 'when' is moved down one line <<"tkjlksjflksdjflsdjlk() when kljlsajflksjdfklsjdlkjfklsdklfjsdlf < kljasjfdsjflsdjfklsdjfklsdjfklsd -> foo.">>}, {func_6, <<"t() -> (fun() -> true end)().">>}, {func_7, <<"t(M, F, A) -> fun M:F/A.">>}, {func_8, <<"-record(r1, {a,b}). -record(r3, {a = fun Id(_) -> #r1{} end(1), b}). t() -> fun Id(A) when record(A#r3.a, r1) -> 7 end(#r3{}). ">>}, {func_9, <<"-record(r1, {a,b}). -record(r3, {a = fun Id(_) -> #r1{} end(1), b}). t() -> fsdfsdfjsdfjkljf:sdlfjdsfjlf( fun Id(sdfsd) -> {sdkjsdf,sdfjsdkljfsdl,sdfkjdklf} end). ">>}, {func_10, <<"t() -> (fun True() -> true end)().">>} ], ?line compile(Config, Ts), ok. call(suite) -> []; call(Config) when is_list(Config) -> Ts = [{call_1, <<"t() -> fookjljsflj:barlkjlkjsdfj(kjdslfjsdl,hej,san,sa, foo,sdfds,sdfsdf,sdfsd,sdfdsf,sdfdsf,sfdsf, sfds,sdfsdf,sfds). ">>} ], ?line compile(Config, Ts), ok. recs(suite) -> []; recs(Config) when is_list(Config) -> %% Evolved while testing strict record tests in guards... Ts = [{recs_1, <<"-compile(strict_record_tests). -record(r, {a = 4,b}). -record(r1, {a,b}). -record(r2, {a = #r1{},b,c=length([1,2,3])}). -record(r3, {a = fun(_) -> #r1{} end(1), b}). -record(r4, {a = fun R1(_) -> #r1{} end(1), b}). t() -> foo = fun(A) when A#r1.a > A#r1.b -> foo end(#r1{b = 2}), 0 = fun(A) when A#r2.a -> 0 end(#r2{a = true}), 1 = fun(A) when (#r1{a = A})#r1.a > 2 -> 1 end(3), 2 = fun(N) when ((#r2{a = #r{a = 4}, b = length([a,b,c])})#r2.a)#r.a > N -> 2 end(2), 3 = fun(A) when (A#r2.a)#r1.a =:= 3 -> 3 end(#r2{a = #r1{a = 3}}), ok = fun() -> F = fun(A) when record(A#r.a, r1) -> 4; (A) when record(A#r1.a, r1) -> 5 end, 5 = F(#r1{a = #r1{}}), 4 = F(#r{a = #r1{}}), ok end(), 3 = fun(A) when record(A#r1.a, r), (A#r1.a)#r.a > 3 -> 3 end(#r1{a = #r{a = 4}}), 7 = fun(A) when record(A#r3.a, r1) -> 7 end(#r3{}), [#r1{a = 2,b = 1}] = fun() -> [A || A <- [#r1{a = 1, b = 3}, #r2{a = 2,b = 1}, #r1{a = 2, b = 1}], A#r1.a > A#r1.b] end(), {[_],b} = fun(L) -> %% A is checked only once: R1 = [{A,B} || A <- L, A#r1.a, B <- L, A#r1.b], A = #r2{a = true}, %% A is checked again: B = if A#r1.a -> a; true -> b end, {R1,B} end([#r1{a = true, b = true}]), p = fun(A) when (A#r1.a =:= 2) or (A#r2.a =:= 1) -> o; (_) -> p end(#r1{a = 2}), o = fun(A) when (A#r1.a =:= 2) orelse (A#r2.a =:= 1) -> o; (_) -> p end(#r1{a = 2}), %% The test done twice (an effect of doing the test as soon as possible). 3 = fun(A) when A#r1.a > 3, record(A, r1) -> 3 end(#r1{a = 5}), ok = fun() -> F = fun(A) when (A#r2.a =:= 1) orelse (A#r2.a) -> 2; (A) when (A#r1.a =:= 1) orelse (A#r1.a) -> 1; (A) when (A#r2.a =:= 2) andalso (A#r2.b) -> 3 end, 1 = F(#r1{a = 1}), 2 = F(#r2{a = true}), 3 = F(#r2{a = 2, b = true}), ok end(), b = fun(A) when false or not (A#r.a =:= 1) -> a; (_) -> b end(#r1{a = 1}), b = fun(A) when not (A#r.a =:= 1) or false -> a; (_) -> b end(#r1{a = 1}), ok = fun() -> F = fun(A) when not (A#r.a =:= 1) -> yes; (_) -> no end, no = F(#r1{a = 2}), yes = F(#r{a = 2}), no = F(#r{a = 1}), ok end(), %% No extra check added: a = fun(A) when record(A, r), A#r.a =:= 1, A#r.b =:= 2 ->a end(#r{a = 1, b = 2}), a = fun(A) when erlang:is_record(A, r), A#r.a =:= 1, A#r.b =:= 2 -> a end(#r{a = 1, b = 2}), a = fun(A) when is_record(A, r), A#r.a =:= 1, A#r.b =:= 2 -> a end(#r{a = 1, b = 2}), nop = fun(A) when (is_record(A, r1) and (A#r1.a > 3)) or (A#r2.a < 1) -> japp; (_) -> nop end(#r2{a = 0}), nop = fun(A) when (A#r1.a > 3) or (A#r2.a < 1) -> japp; (_) -> nop end(#r2{a = 0}), ok = fun() -> F = fun(A) when (A#r1.a =:= 2) or (A#r2.a =:= 1) -> o; (_) -> p end, p = F(#r2{a = 1}), p = F(#r1{a = 2}), ok end(), ok = fun() -> F = fun(A) when fail, A#r1.a; A#r1.a -> ab; (_) -> bu end, ab = F(#r1{a = true}), bu = F(#r2{a = true}), ok end(), both = fun(A) when A#r.a, A#r.b -> both end(#r{a = true, b = true}), ok = fun() -> F = fun(A, B) when ((A#r1.a) orelse (B#r2.a)) or (B#r2.b) or (A#r1.b) -> true; (_, _) -> false end, true = F(#r1{a = false, b = false}, #r2{a = false, b = true}), false = F(#r1{a = true, b = true}, #r1{a = false, b = true}), ok end(), ok. ">>}, {recs_2, <<"-record(r1, {a, b = foo:bar(kljlfjsdlf, kjlksdjf)}). -record(r2, {c = #r1{}, d = #r1{a = bar:foo(kljklsjdf)}}). t() -> R = #r2{}, R#r2{c = R, d = #r1{}}.">>} ], ?line compile(Config, Ts), ?line ok = pp_expr(<<"case #r{a={1,2},b=#r{}} of X=Y=#r{a=foo,b=bar} -> {(foooo:baaaar(X))#r{a = rep},Y,#r.b} end">>), ?line ok = pp_expr(<<"R#r{a = {kljasdklf,sdkfjsdl,sdafjkllsdf,sdfkjsd, sdafjsd,sdf,sdafsd,sdfdsf,sdfdsf,dsfds}}">>), ok. try_catch(suite) -> []; try_catch(Config) when is_list(Config) -> Ts = [{try_1, % copied from erl_eval_SUITE <<"t() -> try 1 of 1 -> 2 catch _:_ -> 3 end.">>}, {try_2, <<"t() -> try 1 of 1 -> 2; 3 -> 4 catch _:_ -> 5 end.">>}, {try_3, <<"t() -> try 3 of 1 -> 2; 3 -> 4 catch _:_ -> 5 end.">>}, {try_4, <<"t() -> try 1 after put(try_catch, 2) end.">>}, {try_5, <<"t() -> try 1 of 1 -> 2; 3 -> 4 after put(try_catch, 5) end.">>}, {try_6, <<"t() -> try 1=2 catch throw:{badmatch,2} -> 3 end.">>}, {try_7, <<"t() -> try 1=2 of 3 -> 4 catch error:{badmatch,2} -> 5 end.">>}, {try_8, <<"t() -> try 1=2 catch error:{badmatch,2} -> 3 after put(try_catch, 4) end.">>}, {try_9, <<"t() -> try 1=2 catch error:{badmatch,2} -> 3 after put(try_catch, 4) end.">>}, {try_10, <<"t() -> try a,b,c catch exit:_ -> d; throw:_ -> t; error:{foo,bar} -> foo, bar end.">>}, {catch_1, <<"t() -> catch foo.">>}, {catch_2, <<"t() -> case catch foo of bar -> foo end.">>}, {catch_3, <<"t() -> catch begin begin foo, bar, foo:bar(kljsldkfjdls,kljsdl), (catch bar:foo(foo)) end end.">>} ], ?line compile(Config, Ts), ?line ok = pp_expr(<<"try erl_internal:bif(M,F,length(Args)) of true -> call(N,Args,Prec,Hook); false -> call(Name,Args,Prec,Hook) after foo end">>), ok. if_then(suite) -> []; if_then(Config) when is_list(Config) -> Ts = [{if_1, <<"t() -> if 1 > 2 -> 1; true -> b end.">>}, {if_2, <<"t() -> if true -> true end.">>}, {if_3, <<"t() -> if 1 == 2 -> a; 1 > 2 -> b; 1 < 2 -> c end.">>} ], ?line compile(Config, Ts), ok. receive_after(suite) -> []; receive_after(Config) when is_list(Config) -> Ts = [{rec_1, <<"t() -> receive foo -> bar; bar -> foo end.">>}, {rec_2, <<"t() -> receive foo -> bar after foo:bar() -> 0 end.">>}, {rec_3, <<"t() -> receive after 1 -> ok end.">>}, {rec_4, <<"t() -> receive {X,Y} -> {a,X,Y} end.">>}, {rec_5, <<"t() -> receive {X,Y} -> {X,Y}; Z -> Z after foo:bar() -> {3,4} end.">>} ], ?line compile(Config, Ts), ok. bits(suite) -> []; bits(Config) when is_list(Config) -> Ts = [{bit_1, % copied from shell_SUITE <<"t() -> <<(<<\"abc\">>):3/binary>>.">>}, {bit_2, <<"t() -> <<(<<\"abc\">>)/binary>>.">>}, {bit_3, <<"t() -> <<3.14:64/float>>.">>}, {bit_4, <<"t() -> <<-20/signed>> = <<-20>>.">>}, {bit_5, <<"t() -> <<-300:16/signed>> = <<-300:16>>.">>}, {bit_6, <<"t() -> <<-(1 bsl 29):32/signed>> = <<-(1 bsl 29):32>>.">>}, {bit_7, <<"t() -> <> = <<\"hej\">>.">>}, {bit_8, <<"t() -> <<>>.">>}, {bit_9, <<"">>} ], ?line compile(Config, Ts), ?line ok = pp_expr(<<"<<(list_to_binary([1,2]))/binary>>">>), ?line ok = pp_expr( <<"<<(list_to_binary([1,2])):all/binary-unit:8-unsigned-big>>">>), ?line ok = pp_expr(<<"<<<<\"hej\">>/binary>>">>), ?line ok = pp_expr(<<"<<(foo:bar())/binary>>">>), ?line ok = pp_expr(<<"<<(a)/binary>>">>), ?line ok = pp_expr(<<"<>">>), ?line ok = pp_expr(<<"<<{a,b}/binary>>">>), ?line ok = pp_expr(<<"<<{foo:bar(),b}/binary>>">>), ?line ok = pp_expr(<<"<<(foo:bar()):(foo:bar())/binary>>">>), ok. head_tail(suite) -> []; head_tail(Config) when is_list(Config) -> Ts = [{list_1, <<"t() -> [a | b].">>}, {list_2, <<"t() -> [a,b,$\n].">>}, {list_3, <<"t() -> [].">>}, {list_4, <<"t() -> [a].">>}, {list_5, <<"t() -> [foo:bar(lkjljlskdfj, klsdajflds, sdafkljsdlfkjdas, kjlsdadjl), bar:foo(kljlkjsdf, lkjsdlfj, [kljsfj, sdfdsfsad])].">>} ], ?line compile(Config, Ts), ok. cond1(suite) -> []; cond1(Config) when is_list(Config) -> C = {'cond',1,[{clause,2,[],[[{tuple,2,[{atom,2,foo},{atom,2,bar}]}]], [{cons,3,{atom,3,a},{cons,3,{atom,3,b},{nil,3}}}]}, {clause,4,[],[[{atom,4,true}]], [{tuple,5,[{atom,5,x},{atom,5,y}]}]}]}, CChars = flat_expr1(C), % ?line "cond {foo,bar} -> [a,b]; true -> {x,y} end" = CChars, ?line "cond\n" " {foo,bar} ->\n" " [a,b];\n" " true ->\n" " {x,y}\n" "end" = CChars, % ?line ok = pp_expr(<<"cond % {foo,bar} -> % [a,b]; % true -> % {x,y} % end">>), ok. block(suite) -> []; block(Config) when is_list(Config) -> Ts = [{block_1, <<"t() -> begin a,{c,d} end.">>} ], ?line compile(Config, Ts), ok. case1(suite) -> []; case1(Config) when is_list(Config) -> Ts = [{case_1, <<"t() -> case {foo,bar} of {A,B} when true -> [A,B]; _ -> foo end.">>} ], ?line compile(Config, Ts), ?line ok = pp_expr(<<"case erl_internal:bif(M,F,length(Args)) of true -> call(N,Args,Prec,Hook); false -> call(Name,Args,Prec,Hook) end">>), ok. ops(suite) -> []; ops(Config) when is_list(Config) -> Ts = [{ops_1, <<"t() -> {a,b} + (3 - 2) + 4.">>}, {ops_2, <<"t() -> a - (3 + 4).">>}, {ops_3, <<"t() -> - (- (- (- (- 3)))).">>} ], ?line compile(Config, Ts), ok. messages(suite) -> []; messages(Config) when is_list(Config) -> ?line true = "{error,{some,\"error\"}}\n" =:= lists:flatten(erl_pp:form({error,{some,"error"}})), ?line true = "{warning,{some,\"warning\"}}\n" =:= lists:flatten(erl_pp:form({warning,{some,"warning"}})), "\n" = flat_form({eof,0}), ok. import_export(suite) -> []; import_export(Config) when is_list(Config) -> Ts = [{import_1, <<"-import(lists, [max/1, reverse/1]). -import(sofs, []). t(L) -> max(reverse(L)).">>}, {export_1, <<"-export([t/0]). -export([]). t() -> [].">>}, {qlc_1, <<"-include_lib(\"stdlib/include/qlc.hrl\"). t() -> qlc:q([X || X <- []]).">>} ], ?line compile(Config, Ts), ok. misc_attrs(suite) -> []; misc_attrs(Config) when is_list(Config) -> ok = pp_forms(<<"-module(m). ">>), ok = pp_forms(<<"-module(m, [Aafjlksfjdlsjflsdfjlsdjflkdsfjlk," "Blsjfdlslfjsdf]). ">>), ok = pp_forms(<<"-export([]). ">>), ok = pp_forms(<<"-export([foo/2, bar/0]). ">>), ok = pp_forms(<<"-export([bar/0]). ">>), ok = pp_forms(<<"-import(lists, []). ">>), ok = pp_forms(<<"-import(lists, [map/2]). ">>), ok = pp_forms(<<"-import(lists, [map/2, foreach/2]). ">>), ok = pp_forms(<<"-'wild '({attr2,3}). ">>), ok = pp_forms(<<"-record(a, {b,c}). ">>), ok = pp_forms(<<"-record(' a ', {}). ">>), ok = pp_forms(<<"-record(' a ', {foo = foo:bar()}). ">>), ok = pp_forms(<<"-custom1(#{test1 => init/2, test2 => [val/1, val/2]}). ">>), ok. dialyzer_attrs(suite) -> []; dialyzer_attrs(Config) when is_list(Config) -> ok = pp_forms(<<"-type foo() :: #bar{}. ">>), ok = pp_forms(<<"-opaque foo() :: {bar, fun((X, [42,...]) -> X)}. ">>), ok = pp_forms(<<"-spec foo(bar(), qux()) -> [T | baz(T)]. ">>), ok = pp_forms(<<"-callback foo(<<_:32,_:_*4>>, T) -> T. ">>), ok. hook(suite) -> []; hook(Config) when is_list(Config) -> F = fun(H) -> H end, do_hook(F). do_hook(HookFun) -> Lc = parse_expr(binary_to_list(<<"[X || X <- [1,2,3]].">>)), H = HookFun(fun hook/4), A0 = erl_anno:new(0), Expr = {call,A0,{atom,A0,fff},[{foo,Lc},{foo,Lc},{foo,Lc}]}, EChars = lists:flatten(erl_pp:expr(Expr, 0, H)), Call = {call,A0,{atom,A0,foo},[Lc]}, Expr2 = {call,A0,{atom,A0,fff},[Call,Call,Call]}, EChars2 = erl_pp:exprs([Expr2]), ?line true = EChars =:= lists:flatten(EChars2), EsChars = erl_pp:exprs([Expr], H), ?line true = EChars =:= lists:flatten(EsChars), A1 = erl_anno:new(1), F = {function,A1,ffff,0,[{clause,A1,[],[],[Expr]}]}, FuncChars = lists:flatten(erl_pp:function(F, H)), F2 = {function,A1,ffff,0,[{clause,A1,[],[],[Expr2]}]}, FuncChars2 = erl_pp:function(F2), ?line true = FuncChars =:= lists:flatten(FuncChars2), FFormChars = erl_pp:form(F, H), ?line true = FuncChars =:= lists:flatten(FFormChars), A = {attribute,A1,record,{r,[{record_field,A1,{atom,A1,a},Expr}]}}, AChars = lists:flatten(erl_pp:attribute(A, H)), A2 = {attribute,A1,record,{r,[{record_field,A1,{atom,A1,a},Expr2}]}}, AChars2 = erl_pp:attribute(A2), ?line true = AChars =:= lists:flatten(AChars2), AFormChars = erl_pp:form(A, H), ?line true = AChars =:= lists:flatten(AFormChars), ?line "INVALID-FORM:{foo,bar}:" = lists:flatten(erl_pp:expr({foo,bar})), %% A list (as before R6), not a list of lists. G = [{op,A1,'>',{atom,A1,a},{foo,{atom,A1,b}}}], % not a proper guard GChars = lists:flatten(erl_pp:guard(G, H)), G2 = [{op,A1,'>',{atom,A1,a}, {call,A0,{atom,A0,foo},[{atom,A1,b}]}}], % not a proper guard GChars2 = erl_pp:guard(G2), ?line true = GChars =:= lists:flatten(GChars2), EH = HookFun({?MODULE, ehook, [foo,bar]}), XEChars = erl_pp:expr(Expr, -1, EH), ?line true = remove_indentation(EChars) =:= lists:flatten(XEChars), XEChars2 = erl_pp:expr(Expr, EH), ?line true = EChars =:= lists:flatten(XEChars2), %% Note: no leading spaces before "begin". Block = {block,A0,[{match,A0,{var,A0,'A'},{integer,A0,3}}, {atom,A0,true}]}, ?line "begin\n A =" ++ _ = lists:flatten(erl_pp:expr(Block, 17, none)), %% Special... ?line true = "{some,value}" =:= lists:flatten(erl_pp:expr({value,A0,{some,value}})), %% Silly... ?line true = "if true -> 0 end" =:= flat_expr({'if',0,[{clause,0,[],[],[{atom,0,0}]}]}), %% More compatibility: before R6 OldIf = {'if',A0,[{clause,A0,[],[{atom,A0,true}],[{atom,A0,b}]}]}, NewIf = {'if',A0,[{clause,A0,[],[[{atom,A0,true}]],[{atom,A0,b}]}]}, OldIfChars = lists:flatten(erl_pp:expr(OldIf)), NewIfChars = lists:flatten(erl_pp:expr(NewIf)), ?line true = OldIfChars =:= NewIfChars, ok. remove_indentation(S) -> %% T is for the very special leaf(" ") used for lc and bc. T = re:replace(S, " \n *", "", [{return,list},global]), re:replace(T, "\n *", " ", [{return,list},global]). ehook(HE, I, P, H, foo, bar) -> hook(HE, I, P, H). hook({foo,E}, I, P, H) -> A = erl_anno:new(0), erl_pp:expr({call,A,{atom,A,foo},[E]}, I, P, H). neg_indent(suite) -> []; neg_indent(Config) when is_list(Config) -> ?line ok = pp_expr(<<"begin a end">>), ?line ok = pp_expr(<<"begin a,b end">>), ?line ok = pp_expr(<<"try a,b,c catch exit:_ -> d; throw:_ -> t; error:{foo,bar} -> foo, bar end">>), ?line ok = pp_expr( <<"fun() -> F = fun(A, B) when ((A#r1.a) orelse (B#r2.a)) or (B#r2.b) or (A#r1.b) -> true; (_, _) -> false end, true = F(#r1{a = false, b = false}, #r2{a = false, b = true}), false = F(#r1{a = true, b = true}, #r1{a = false, b = true}), ok end()">>), ?line ok = pp_expr(<<"[X || X <- a, true]">>), ?line ok = pp_expr(<<"{[a,b,c],[d,e|f]}">>), ?line ok = pp_expr(<<"f(a,b,c)">>), ?line ok = pp_expr(<<"fun() when a,b;c,d -> a end">>), ?line ok = pp_expr(<<"fun A() when a,b;c,d -> a end">>), ?line ok = pp_expr(<<"<<34:32,17:32>>">>), ?line ok = pp_expr(<<"if a,b,c -> d; e,f,g -> h,i end">>), ?line ok = pp_expr(<<"if a -> d; c -> d end">>), ?line ok = pp_expr(<<"receive after 1 -> 2 end">>), ?line ok = pp_expr(<<"begin a,b,c end">>), ?line "\"\"" = flat_expr({string,0,""}), ?line ok = pp_expr(<<"\"abc\"">>), ?line ok = pp_expr(<<"\"abc\n\n\n\n\nkjsd\n\n\n\n\nkljsddf\n\n\n\n\n" "klafd\n\n\n\n\nkljsdf\n\n\n\n\nsdf\n\n\n\n\n\"">>), ?line ok = pp_expr(<<"fkjlskljklkkljlkjlkjkljlkjsljklf" "lsdjlfdsjlfjsdlfjdslfjdlsjfsdjfklsdkfjsdf(" "\"abc\n\n\n\n\nkjsd\n\n\n\n\nkljsddf\n\n\n\n\n" "kljsafd\n\n\n\n\nkljsdf\n\n\n\n\nkjsdf" "\n\n\n\n\n\")">>), %% fun-info is skipped when everything is to fit on one single line Fun1 = {'fun',1,{function,t,0},{0,45353021,'-t/0-fun-0-'}}, ?line "fun t/0" = flat_expr(Fun1), Fun2 = {'fun',2,{clauses,[{clause,2,[],[],[{atom,3,true}]}]}, {0,108059557,'-t/0-fun-0-'}}, ?line "fun() -> true end" = flat_expr(Fun2), Fun3 = {named_fun,3,'True',[{clause,3,[],[],[{atom,3,true}]}], {0,424242424,'-t/0-True-0-'}}, ?line "fun True() -> true end" = flat_expr(Fun3), ok. otp_6321(doc) -> "OTP_6321. Bug fix of exprs()."; otp_6321(suite) -> []; otp_6321(Config) when is_list(Config) -> Str = "S = hopp, {hej, S}. ", {done, {ok, Tokens, _EndLine}, ""} = erl_scan:tokens("", Str, _L=1), {ok, Exprs} = erl_parse:parse_exprs(Tokens), "S = hopp, {hej,S}" = lists:flatten(erl_pp:exprs(Exprs)), ok. otp_6911(doc) -> "OTP_6911. More newlines."; otp_6911(suite) -> []; otp_6911(Config) when is_list(Config) -> F = {function,5,thomas,1, [{clause,5, [{var,5,'X'}], [], [{'case',6, {var,6,'X'}, [{clause,7,[{atom,7,true}],[],[{integer,7,12}]}, {clause,8,[{atom,8,false}],[],[{integer,8,14}]}]}]}]}, Chars = flat_form(F), ?line "thomas(X) ->\n" " case X of\n" " true ->\n" " 12;\n" " false ->\n" " 14\n" " end.\n" = Chars, ?line ok = pp_expr(<<"case X of true -> 12; false -> 14 end">>), ?line ok = pp_expr(<<"receive after 1 -> ok end">>), ok. otp_6914(doc) -> "OTP_6914. Binary comprehensions."; otp_6914(suite) -> []; otp_6914(Config) when is_list(Config) -> ?line ok = pp_expr(<<"<< <> || B <- [0,1,1] >>">>), ?line ok = pp_expr(<<"[ B || <> <= <<\"hi\">>]">>), ?line ok = pp_expr(<<"<< <<1:1>> || true >>">>), ok. otp_8150(doc) -> "OTP_8150. Types."; otp_8150(suite) -> []; otp_8150(Config) when is_list(Config) -> ?line _ = [{N,ok} = {N,pp_forms(B)} || {N,B} <- type_examples() ], ok. otp_8238(doc) -> "OTP_8238. Bugfix 'E'."; otp_8238(suite) -> []; otp_8238(Config) when is_list(Config) -> Ex = [<<"-record(rec1, {}).\n" "-record(rec2, {a, b}).\n" "-record(rec3, {f123, g, h}).\n">>, <<"-type line() :: integer().\n">>, <<"-type info_line() :: integer() | term().\n">>, <<"-type column() :: pos_integer().\n">>, [["\n", B] || {_,B} <- type_examples()], <<"t1(T) ->\n" " foo:bar(#rec1{}, #rec2{}),\n" " T.\n" "t2() ->\n" " #r{}.\n">> ], ?line compile(Config, [{otp_8238,iolist_to_binary(Ex)}]), ok. type_examples() -> [{ex1,<<"-type ann() :: Var :: integer(). ">>}, {ex2,<<"-type ann2() :: Var :: " "'return' | 'return_white_spaces' | 'return_comments'" " | 'text' | ann(). ">>}, {ex3,<<"-type paren() :: (ann2()). ">>}, {ex4,<<"-type t1() :: atom(). ">>}, {ex5,<<"-type t2() :: [t1()]. ">>}, {ex56,<<"-type integer(A) :: A. ">>}, {ex6,<<"-type t3(Atom) :: integer(Atom). ">>}, {ex7,<<"-type '\\'t::4'() :: t3('\\'foobar'). ">>}, {ex8,<<"-type t5() :: {t1(), t3(foo)}. ">>}, {ex9,<<"-type t6() :: 1 | 2 | 3 | 'foo' | 'bar'. ">>}, {ex10,<<"-type t7() :: []. ">>}, {ex11,<<"-type t71() :: [_]. ">>}, {ex12,<<"-type t8() :: {any(),none(),pid(),port()," "reference(),float()}. ">>}, {ex13,<<"-type t9() :: [1|2|3|foo|bar] | " "list(a | b | c) | t71(). ">>}, {ex14,<<"-type t10() :: {1|2|3|foo|t9()} | {}. ">>}, {ex15,<<"-type t11() :: 1..2. ">>}, {ex16,<<"-type t13() :: maybe_improper_list(integer(), t11()). ">>}, {ex17,<<"-type t14() :: [erl_scan:foo() | " "erl_scan:bar(34, 92) | t13() | m:f(integer() | <<_:_*16>>)]. ">>}, {ex18,<<"-type t15() :: {binary(),<<>>,<<_:34>>,<<_:_*42>>," "<<_:3,_:_*14>>,<<>>} | [<<>>|<<_:34>>|<<_:16>>|" "<<_:3,_:_*1472>>|<<_:19,_:_*14>>| <<_:34>>|" "<<_:34>>|<<_:34>>|<<_:34>>]. ">>}, {ex19,<<"-type t16() :: fun(). ">>}, {ex20,<<"-type t17() :: fun((...) -> paren()). ">>}, {ex21,<<"-type t18() :: fun(() -> t17() | t16()). ">>}, {ex22,<<"-type t19() :: fun((t18()) -> t16()) |" "fun((nonempty_maybe_improper_list('integer', any())|" "1|2|3|a|b|<<_:3,_:_*14>>|integer()) ->" "nonempty_maybe_improper_list('integer', any())|" "1|2|3|a|b|<<_:3,_:_*14>>|integer()). ">>}, {ex23,<<"-type t20() :: [t19(), ...]. ">>}, {ex24,<<"-type t21() :: tuple(). ">>}, {ex25,<<"-type t21(A) :: A. ">>}, {ex26,<<"-type t22() :: t21(integer()). ">>}, {ex27,<<"-type t23() :: #rec1{}. ">>}, {ex28,<<"-type t24() :: #rec2{a :: t23(), b :: [atom()]}. ">>}, {ex29,<<"-type t25() :: #rec3{f123 :: [t24() | " "1|2|3|4|a|b|c|d| " "nonempty_maybe_improper_list(integer, any())]}. ">>}, {ex30,<<"-type t99() ::" "{t2(),'\\'t::4'(),t5(),t6(),t7(),t8(),t10(),t14()," "t15(),t20(),t21(), t22(),t25()}. ">>}, %% Writing constraints as is_subtype(V, T) is not supported since %% Erlang/OTP 19.0, but as long as the parser recognizes the %% is_subtype(V, T) syntax, we need a few examples of the syntax. {ex31,<<"-spec t1(FooBar :: t99()) -> t99();" "(t2()) -> t2();" "('\\'t::4'()) -> '\\'t::4'() when is_subtype('\\'t::4'(), t24);" "(t23()) -> t23() when is_subtype(t23(), atom())," " is_subtype(t23(), t14());" "(t24()) -> t24() when is_subtype(t24(), atom())," " is_subtype(t24(), t14())," " is_subtype(t24(), '\\'t::4'()).">>}, {ex32,<<"-spec mod:t2() -> any(). ">>}, {ex33,<<"-opaque attributes_data() :: " "[{'column', column()} | {'line', info_line()} |" " {'text', string()}] | {line(),column()}. ">>}, {ex34,<<"-record(r,{" "f1 :: attributes_data()," "f222 = foo:bar(34, #rec3{}, 234234234423, " " aassdsfsdfsdf, 2234242323) :: " " [t24() | 1|2|3|4|a|b|c|d| " " nonempty_maybe_improper_list(integer, any())]," "f333 :: [t24() | 1|2|3|4|a|b|c|d| " " nonempty_maybe_improper_list(integer, any())]," "f3 = x:y()," "f4 = x:z() :: t99()," "f17 :: 'undefined'," "f18 :: 1 | 2 | 'undefined'," "f19 = 3 :: integer()|undefined," "f5 = 3 :: undefined|integer()}). ">>}]. otp_8473(doc) -> "OTP_8473. Bugfix abstract type 'fun'."; otp_8473(suite) -> []; otp_8473(Config) when is_list(Config) -> Ex = [{ex1,<<"-type 'fun'(A) :: A.\n" "-type funkar() :: 'fun'(fun((integer()) -> atom())).\n">>}], ?line _ = [{N,ok} = {N,pp_forms(B)} || {N,B} <- Ex], ok. otp_8522(doc) -> "OTP_8522. Avoid duplicated 'undefined' in record field types."; otp_8522(suite) -> []; otp_8522(Config) when is_list(Config) -> FileName = filename('otp_8522.erl', Config), C = <<"-module(otp_8522).\n" "-record(r, {f1 :: undefined,\n" " f2 :: A :: undefined,\n" " f3 :: (undefined),\n" " f4 :: x | y | undefined | z,\n" " f5 :: a}).\n">>, ?line ok = file:write_file(FileName, C), ?line {ok, _} = compile:file(FileName, [{outdir,?privdir},debug_info]), BF = filename("otp_8522", Config), ?line {ok, A} = beam_lib:chunks(BF, [abstract_code]), %% OTP-12719: Since 'undefined' is no longer added by the Erlang %% Parser, the number of 'undefined' is 4. It used to be 5. ?line 4 = count_atom(A, undefined), ok. count_atom(A, A) -> 1; count_atom(T, A) when is_tuple(T) -> count_atom(tuple_to_list(T), A); count_atom(L, A) when is_list(L) -> lists:sum([count_atom(T, A) || T <- L]); count_atom(_, _) -> 0. maps_syntax(doc) -> "Maps syntax"; maps_syntax(suite) -> []; maps_syntax(Config) when is_list(Config) -> Ts = [{map_fun_1, <<"t() ->\n" " M0 = #{ 1 => hi, hi => 42, 1.0 => {hi,world}},\n" " M1 = M0#{ 1 := hello, new_val => 1337 },\n" " map_fun_2:val(M1).\n">>}, {map_fun_2, <<"val(#{ 1 := V1, hi := V2, new_val := V3}) -> {V1,V2,V3}.\n">>}], compile(Config, Ts), ok = pp_expr(<<"#{}">>), ok = pp_expr(<<"#{ a => 1, <<\"hi\">> => \"world\", 33 => 1.0 }">>), ok = pp_expr(<<"#{ a := V1, <<\"hi\">> := V2 } = M">>), ok = pp_expr(<<"M#{ a => V1, <<\"hi\">> := V2 }">>), F = <<"-module(maps_type_syntax).\n" "-compile(export_all).\n" "-type t1() :: map().\n" "-type t2() :: #{ atom() => integer(), atom() => float() }.\n" "-type u() :: #{a => (I :: integer()) | (A :: atom()),\n" " (X :: atom()) | (Y :: atom()) =>\n" " (I :: integer()) | (A :: atom())}.\n" "-spec f1(t1()) -> 'true'.\n" "f1(M) when is_map(M) -> true.\n" "-spec f2(t2()) -> integer().\n" "f2(#{a := V1,b := V2}) -> V1 + V2.\n" "\n">>, ok = pp_forms(F), ok. otp_8567(doc) -> "OTP_8567. Avoid duplicated 'undefined' in record field types."; otp_8567(suite) -> []; otp_8567(Config) when is_list(Config) -> FileName = filename('otp_8567.erl', Config), C = <<"-module otp_8567.\n" "-compile export_all.\n" "-spec(a).\n" "-record r, {a}.\n" "-record s, {a :: integer()}.\n" "-type t() :: {#r{},#s{}}.\n">>, ?line ok = file:write_file(FileName, C), ?line {error,[{_,[{3,erl_parse,["syntax error before: ","')'"]}]}],_} = compile:file(FileName, [return]), F = <<"-module(otp_8567).\n" "-compile(export_all).\n" "-record(t, {a}).\n" "-record(u, {a :: integer()}).\n" "-opaque ot() :: {#t{}, #u{}}.\n" "-opaque(ot1() :: atom()).\n" "-type a() :: integer().\n" "-spec t() -> a().\n" "t() ->\n" " 3.\n" "\n" "-spec(t2 (ot()) -> ot1()).\n" "t2(A) ->\n" " A.\n" "\n" "-spec(otp_8567:t4 (ot()) -> ot1()).\n" "t4(A) ->\n" " A.\n">>, ?line ok = pp_forms(F), ok. otp_8664(doc) -> "OTP_8664. Types with integer expressions."; otp_8664(suite) -> []; otp_8664(Config) when is_list(Config) -> FileName = filename('otp_8664.erl', Config), C1 = <<"-module(otp_8664).\n" "-export([t/0]).\n" "-define(A, -3).\n" "-define(B, (?A*(-1 band (((2)))))).\n" "-type t1() :: ?B | ?A.\n" "-type t2() :: ?B-1 .. -?B.\n" "-type t3() :: 9 band (8 - 3) | 1+2 | 5 band 3.\n" "-type b1() :: <<_:_*(3-(-1))>>\n" " | <<_:(-(?B))>>\n" " | <<_:4>>.\n" "-type u() :: 1 .. 2 | 3.. 4 | (8-3) ..6 | 5+0..6.\n" "-type t() :: t1() | t2() | t3() | b1() | u().\n" "-spec t() -> t().\n" "t() -> 3.\n">>, ?line ok = file:write_file(FileName, C1), ?line {ok, _, []} = compile:file(FileName, [return]), C2 = <<"-module(otp_8664).\n" "-export([t/0]).\n" "-spec t() -> 9 and 4.\n" "t() -> 0.\n">>, ?line ok = file:write_file(FileName, C2), ?line {error,[{_,[{3,erl_lint,{type_syntax,integer}}]}],_} = compile:file(FileName, [return]), ok. otp_9147(doc) -> "OTP_9147. Create well-formed types when adding 'undefined'."; otp_9147(suite) -> []; otp_9147(Config) when is_list(Config) -> FileName = filename('otp_9147.erl', Config), C1 = <<"-module(otp_9147).\n" "-export_type([undef/0]).\n" "-record(undef, {f1 :: F1 :: a | b}).\n" "-type undef() :: #undef{}.\n">>, ?line ok = file:write_file(FileName, C1), ?line {ok, _, []} = compile:file(FileName, [return,'P',{outdir,?privdir}]), PFileName = filename('otp_9147.P', Config), ?line {ok, Bin} = file:read_file(PFileName), %% The parentheses around "F1 :: a | b" are new (bugfix). ?line true = lists:member("-record(undef,{f1 :: F1 :: a | b}).", string:tokens(binary_to_list(Bin), "\n")), ok. otp_10302(doc) -> "OTP-10302. Unicode characters scanner/parser."; otp_10302(suite) -> []; otp_10302(Config) when is_list(Config) -> Ts = [{uni_1, <<"t() -> <<(<<\"abc\\x{aaa}\">>):3/binary>>.">>} ], compile(Config, Ts), ok = pp_expr(<<"$\\x{aaa}">>), ok = pp_expr(<<"\"1\\x{aaa}\"">>), ok = pp_expr(<<"<<<<\"hej\">>/binary>>">>), ok = pp_expr(<<"<< <<\"1\\x{aaa}\">>/binary>>">>), U = [{encoding,unicode}], do_hook(fun(H) -> [{hook,H}] end), do_hook(fun(H) -> [{hook,H}]++U end), ok = pp_expr(<<"$\\x{aaa}">>, [{hook,fun hook/4}]), Opts = [{hook, fun unicode_hook/4},{encoding,unicode}], Lc = parse_expr("[X || X <- [\"\x{400}\",\"\xFF\"]]."), A0 = erl_anno:new(0), Expr = {call,A0,{atom,A0,fff},[{foo,{foo,Lc}},{foo,{foo,Lc}}]}, EChars = lists:flatten(erl_pp:expr(Expr, 0, Opts)), Call = {call,A0,{atom,A0,foo},[{call,A0,{atom,A0,foo},[Lc]}]}, Expr2 = {call,A0,{atom,A0,fff},[Call,Call]}, EChars2 = erl_pp:exprs([Expr2], U), EChars = lists:flatten(EChars2), [$\x{400},$\x{400}] = [C || C <- EChars, C > 255], ok = pp_forms(<<"function() -> {\"\x{400}\",$\x{400}}. "/utf8>>, U), ok = pp_forms("function() -> {\"\x{400}\",$\x{400}}. ", []), ok. unicode_hook({foo,E}, I, P, H) -> A = erl_anno:new(0), erl_pp:expr({call,A,{atom,A,foo},[E]}, I, P, H). otp_10820(doc) -> "OTP-10820. Unicode filenames."; otp_10820(suite) -> []; otp_10820(Config) when is_list(Config) -> C1 = <<"%% coding: utf-8\n -module(any).">>, ok = do_otp_10820(Config, C1, "+pc latin1"), ok = do_otp_10820(Config, C1, "+pc unicode"), C2 = <<"%% coding: latin-1\n -module(any).">>, ok = do_otp_10820(Config, C2, "+pc latin1"), ok = do_otp_10820(Config, C2, "+pc unicode"). do_otp_10820(Config, C, PC) -> {ok,Node} = start_node(erl_pp_helper, "+fnu " ++ PC), L = [915,953,959,973,957,953,954,959,957,964], FileName = filename(L++".erl", Config), ok = rpc:call(Node, file, write_file, [FileName, C]), {ok, _, []} = rpc:call(Node, compile, file, [FileName, [return,'P',{outdir,?privdir}]]), PFileName = filename(L++".P", Config), {ok, Bin} = rpc:call(Node, file, read_file, [PFileName]), true = test_server:stop_node(Node), true = file_attr_is_string(binary_to_list(Bin)), ok. file_attr_is_string("-file(\"" ++ _) -> true; file_attr_is_string([_ | L]) -> file_attr_is_string(L). otp_11100(doc) -> "OTP-11100. Fix printing of invalid forms."; otp_11100(suite) -> []; otp_11100(Config) when is_list(Config) -> %% There are a few places where the added code ("options(none)") %% doesn't make a difference (pp:bit_elem_type/1 is an example). %% Cannot trigger the use of the hook function with export/import. "-export([{fy,a}/b]).\n" = pf({attribute,1,export,[{{fy,a},b}]}), A1 = erl_anno:new(1), "-type foo() :: integer(INVALID-FORM:{foo,bar}:).\n" = pf({attribute,A1,type,{foo,{type,A1,integer,[{foo,bar}]},[]}}), pf({attribute,A1,type, {a,{type,A1,range,[{integer,A1,1},{foo,bar}]},[]}}), "-type foo(INVALID-FORM:{foo,bar}:) :: A.\n" = pf({attribute,A1,type,{foo,{var,A1,'A'},[{foo,bar}]}}), "-type foo() :: INVALID-FORM:{foo,bar}: :: [].\n" = pf({attribute,A1,type, {foo,{paren_type,A1, [{ann_type,A1,[{foo,bar},{type,A1,nil,[]}]}]}, []}}), "-type foo() :: <<_:INVALID-FORM:{foo,bar}:>>.\n" = pf({attribute,A1,type, {foo,{type,A1,binary,[{foo,bar},{integer,A1,0}]},[]}}), "-type foo() :: <<_:10, _:_*INVALID-FORM:{foo,bar}:>>.\n" = pf({attribute,A1,type, {foo,{type,A1,binary,[{integer,A1,10},{foo,bar}]},[]}}), "-type foo() :: #r{INVALID-FORM:{foo,bar}: :: integer()}.\n" = pf({attribute,A1,type, {foo,{type,A1,record, [{atom,A1,r}, {type,A1,field_type, [{foo,bar},{type,A1,integer,[]}]}]}, []}}), ok. otp_11861(doc) -> "OTP-11861. behaviour_info() and -callback."; otp_11861(suite) -> []; otp_11861(Config) when is_list(Config) -> "-optional_callbacks([bar/0]).\n" = pf({attribute,3,optional_callbacks,[{bar,0}]}), "-optional_callbacks([{bar,1,bad}]).\n" = pf({attribute,4,optional_callbacks,[{bar,1,bad}]}), ok. pf(Form) -> lists:flatten(erl_pp:form(Form, none)). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% compile(Config, Tests) -> F = fun({N,P}, BadL) -> case catch compile_file(Config, P) of ok -> case pp_forms(P) of ok -> BadL; not_ok -> ?t:format("~nTest ~p failed.~n", [N]), fail() end; Bad -> ?t:format("~nTest ~p failed. got~n ~p~n", [N, Bad]), fail() end end, lists:foldl(F, [], Tests). compile_file(Config, Test0) -> case compile_file(Config, Test0, ['E']) of {ok, RootFile} -> File = RootFile ++ ".E", {ok, Bin0} = file:read_file(File), Bin = strip_module_info(Bin0), %% A very simple check: just try to compile the output. case compile_file(Config, Bin, []) of {ok, RootFile2} -> File2 = RootFile2 ++ ".E", {ok, Bin1} = file:read_file(File2), case Bin0 =:= Bin1 of true -> test_max_line(binary_to_list(Bin)); false -> {error, file_contents_modified, {Bin0, Bin1}} end; Error -> {error, could_not_compile_E_file, Error} end; Error -> Error end. compile_file(Config, Test0, Opts0) -> FileName = filename('erl_pp_test.erl', Config), Test = list_to_binary(["-module(erl_pp_test). " "-compile(export_all). ", Test0]), Opts = [export_all,return,nowarn_unused_record,{outdir,?privdir} | Opts0], ok = file:write_file(FileName, Test), case compile:file(FileName, Opts) of {ok, _M, _Ws} -> {ok, filename:rootname(FileName)}; Error -> Error end. strip_module_info(Bin) -> {match, [{Start,_Len}|_]} = re:run(Bin, "module_info"), <> = Bin, R. flat_expr1(Expr0) -> Expr = erl_parse:new_anno(Expr0), lists:flatten(erl_pp:expr(Expr)). flat_expr(Expr0) -> Expr = erl_parse:new_anno(Expr0), lists:flatten(erl_pp:expr(Expr, -1, none)). flat_form(Form0) -> Form = erl_parse:new_anno(Form0), lists:flatten(erl_pp:form(Form)). pp_forms(Bin) -> pp_forms(Bin, none). pp_forms(Bin, Options) when is_binary(Bin) -> pp_forms(to_list(Bin, Options), Options); pp_forms(List, Options) when is_list(List) -> PP1 = (catch parse_and_pp_forms(List, Options)), PP2 = (catch parse_and_pp_forms(PP1, Options)), case PP1 =:= PP2 of % same line numbers true -> test_max_line(PP1); false -> not_ok end. parse_and_pp_forms(String, Options) -> lists:append(lists:map(fun(AF) -> erl_pp:form(AF, Options) end, parse_forms(String))). parse_forms(Chars) -> String = lists:flatten(Chars), parse_forms2(String, [], 1, []). parse_forms2([], _Cont, _Line, Forms) -> lists:reverse(Forms); parse_forms2(String, Cont0, Line, Forms) -> case erl_scan:tokens(Cont0, String, Line, [unicode]) of {done, {ok, Tokens, EndLine}, Chars} -> {ok, Form} = erl_parse:parse_form(Tokens), parse_forms2(Chars, [], EndLine, [Form | Forms]); {more, Cont} when element(4, Cont) =:= [] -> %% extra spaces after forms... parse_forms2([], Cont, Line, Forms); {more, Cont} -> %% final dot needs a space... parse_forms2(" ", Cont, Line, Forms) end. pp_expr(Bin) -> pp_expr(Bin, none). %% Final dot is added. pp_expr(Bin, Options) when is_binary(Bin) -> pp_expr(to_list(Bin, Options), Options); pp_expr(List, Options) when is_list(List) -> PP1 = (catch parse_and_pp_expr(List, 0, Options)), PPneg = (catch parse_and_pp_expr(List, -1, Options)), PP2 = (catch parse_and_pp_expr(PPneg, 0, Options)), if PP1 =:= PP2 -> % same line numbers case (test_max_line(PP1) =:= ok) and (test_new_line(PPneg) =:= ok) of true -> ok; false -> not_ok end; true -> not_ok end. parse_and_pp_expr(String, Indent, Options) -> StringDot = lists:flatten(String) ++ ".", erl_pp:expr(parse_expr(StringDot), Indent, Options). parse_expr(Chars) -> {ok, Tokens, _} = erl_scan:string(Chars, 1, [unicode]), {ok, [Expr]} = erl_parse:parse_exprs(Tokens), Expr. to_list(Bin, Options) when is_list(Options) -> case proplists:get_value(encoding, Options) of unicode -> unicode:characters_to_list(Bin); encoding -> binary_to_list(Bin); undefined -> binary_to_list(Bin) end; to_list(Bin, _Hook) -> binary_to_list(Bin). test_new_line(String) -> case string:chr(String, $\n) of 0 -> ok; _ -> not_ok end. test_max_line(String) -> case max_line(String) of ML when ML > 100 -> {error, max_line_too_big, {ML,String}}; _ML -> ok end. max_line(String) -> lists:max([0 | [length(Sub) || Sub <- string:tokens(String, "\n"), string:substr(Sub, 1, 5) =/= "-file"]]). filename(Name, Config) when is_atom(Name) -> filename(atom_to_list(Name), Config); filename(Name, Config) -> filename:join(?privdir, Name). fail() -> ct:fail(failed). %% +fnu means a peer node has to be started; slave will not do start_node(Name, Xargs) -> ?line PA = filename:dirname(code:which(?MODULE)), test_server:start_node(Name, peer, [{args, "-pa " ++ PA ++ " " ++ Xargs}]).