aboutsummaryrefslogtreecommitdiffstats
path: root/lib/stdlib
diff options
context:
space:
mode:
Diffstat (limited to 'lib/stdlib')
-rw-r--r--lib/stdlib/doc/src/io.xml17
-rw-r--r--lib/stdlib/src/erl_eval.erl46
-rw-r--r--lib/stdlib/src/io_lib_pretty.erl2
-rw-r--r--lib/stdlib/src/maps.erl9
-rw-r--r--lib/stdlib/test/io_SUITE.erl22
-rw-r--r--lib/stdlib/test/maps_SUITE.erl4
6 files changed, 91 insertions, 9 deletions
diff --git a/lib/stdlib/doc/src/io.xml b/lib/stdlib/doc/src/io.xml
index f1037ec76b..d4a2713840 100644
--- a/lib/stdlib/doc/src/io.xml
+++ b/lib/stdlib/doc/src/io.xml
@@ -4,7 +4,7 @@
<erlref>
<header>
<copyright>
- <year>1996</year><year>2017</year>
+ <year>1996</year><year>2018</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -332,11 +332,22 @@ Here T = [{attributes,[[{id,age,1.5},
{tag,{'PRIVATE',3}},
{mode,implicit}]
ok</pre>
+
+ <p>As from Erlang/OTP 21.0, a field width of value
+ <c>0</c> can be used for specifying that a line is
+ infinitely long, which means that no line breaks
+ are inserted. For example:</p>
+
+ <pre>
+5> <input>io:fwrite("~0p~n", [lists:seq(1, 30)]).</input>
+[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30]
+ok</pre>
+
<p>When the modifier <c>l</c> is specified, no detection of
printable character lists takes place, for example:</p>
<pre>
-5> <input>S = [{a,"a"}, {b, "b"}].</input>
-6> <input>io:fwrite("~15p~n", [S]).</input>
+6> <input>S = [{a,"a"}, {b, "b"}],
+ io:fwrite("~15p~n", [S]).</input>
[{a,"a"},
{b,"b"}]
ok
diff --git a/lib/stdlib/src/erl_eval.erl b/lib/stdlib/src/erl_eval.erl
index 0f6d48b9a3..31c0e60fe1 100644
--- a/lib/stdlib/src/erl_eval.erl
+++ b/lib/stdlib/src/erl_eval.erl
@@ -29,7 +29,7 @@
-export([new_bindings/0,bindings/1,binding/2,add_binding/3,del_binding/2]).
-export([extended_parse_exprs/1, extended_parse_term/1,
subst_values_for_vars/2]).
--export([is_constant_expr/1, partial_eval/1]).
+-export([is_constant_expr/1, partial_eval/1, eval_str/1]).
%% Is used by standalone Erlang (escript).
%% Also used by shell.erl.
@@ -1557,6 +1557,50 @@ ev_expr({cons,_,H,T}) -> [ev_expr(H) | ev_expr(T)].
%% true = erl_internal:guard_bif(F, length(As)),
%% apply(erlang, F, [ev_expr(X) || X <- As]);
+%% eval_str(InStr) -> {ok, OutStr} | {error, ErrStr'}
+%% InStr must represent a body
+%% Note: If InStr is a binary it has to be a Latin-1 string.
+%% If you have a UTF-8 encoded binary you have to call
+%% unicode:characters_to_list/1 before the call to eval_str().
+
+-define(result(F,D), lists:flatten(io_lib:format(F, D))).
+
+-spec eval_str(string() | unicode:latin1_binary()) ->
+ {'ok', string()} | {'error', string()}.
+
+eval_str(Str) when is_list(Str) ->
+ case erl_scan:tokens([], Str, 0) of
+ {more, _} ->
+ {error, "Incomplete form (missing .<cr>)??"};
+ {done, {ok, Toks, _}, Rest} ->
+ case all_white(Rest) of
+ true ->
+ case erl_parse:parse_exprs(Toks) of
+ {ok, Exprs} ->
+ case catch erl_eval:exprs(Exprs, erl_eval:new_bindings()) of
+ {value, Val, _} ->
+ {ok, Val};
+ Other ->
+ {error, ?result("*** eval: ~p", [Other])}
+ end;
+ {error, {_Line, Mod, Args}} ->
+ Msg = ?result("*** ~ts",[Mod:format_error(Args)]),
+ {error, Msg}
+ end;
+ false ->
+ {error, ?result("Non-white space found after "
+ "end-of-form :~ts", [Rest])}
+ end
+ end;
+eval_str(Bin) when is_binary(Bin) ->
+ eval_str(binary_to_list(Bin)).
+
+all_white([$\s|T]) -> all_white(T);
+all_white([$\n|T]) -> all_white(T);
+all_white([$\t|T]) -> all_white(T);
+all_white([]) -> true;
+all_white(_) -> false.
+
ret_expr(_Old, New) ->
%% io:format("~w: reduced ~s => ~s~n",
%% [line(Old), erl_pp:expr(Old), erl_pp:expr(New)]),
diff --git a/lib/stdlib/src/io_lib_pretty.erl b/lib/stdlib/src/io_lib_pretty.erl
index 3d5a979b3e..dca1b37ef3 100644
--- a/lib/stdlib/src/io_lib_pretty.erl
+++ b/lib/stdlib/src/io_lib_pretty.erl
@@ -131,6 +131,8 @@ print(Term, Col, Ll, D, M0, T, RecDefFun, Enc, Str) when is_tuple(Term);
%% use Len as CHAR_MAX if M0 = -1
M = max_cs(M0, Len),
if
+ Ll =:= 0 ->
+ write(If);
Len < Ll - Col, Len =< M ->
%% write the whole thing on a single line when there is room
write(If);
diff --git a/lib/stdlib/src/maps.erl b/lib/stdlib/src/maps.erl
index a13f340709..a1634547f3 100644
--- a/lib/stdlib/src/maps.erl
+++ b/lib/stdlib/src/maps.erl
@@ -249,7 +249,7 @@ fold(Fun,Init,Map) when is_function(Fun,3), is_map(Map) ->
fold(Fun,Init,Iterator) when is_function(Fun,3), ?IS_ITERATOR(Iterator) ->
fold_1(Fun,Init,Iterator);
fold(Fun,Init,Map) ->
- erlang:error(error_type(Map),[Fun,Init,Map]).
+ erlang:error(error_type_iter(Map),[Fun,Init,Map]).
fold_1(Fun, Acc, Iter) ->
case next(Iter) of
@@ -272,7 +272,7 @@ map(Fun,Map) when is_function(Fun, 2), is_map(Map) ->
map(Fun,Iterator) when is_function(Fun, 2), ?IS_ITERATOR(Iterator) ->
maps:from_list(map_1(Fun, Iterator));
map(Fun,Map) ->
- erlang:error(error_type(Map),[Fun,Map]).
+ erlang:error(error_type_iter(Map),[Fun,Map]).
map_1(Fun, Iter) ->
case next(Iter) of
@@ -342,5 +342,8 @@ with(Ks,M) ->
erlang:error(error_type(M),[Ks,M]).
-error_type(M) when is_map(M); ?IS_ITERATOR(M) -> badarg;
+error_type(M) when is_map(M) -> badarg;
error_type(V) -> {badmap, V}.
+
+error_type_iter(M) when is_map(M); ?IS_ITERATOR(M) -> badarg;
+error_type_iter(V) -> {badmap, V}.
diff --git a/lib/stdlib/test/io_SUITE.erl b/lib/stdlib/test/io_SUITE.erl
index 13f2cbd27b..91fe1133f6 100644
--- a/lib/stdlib/test/io_SUITE.erl
+++ b/lib/stdlib/test/io_SUITE.erl
@@ -31,7 +31,7 @@
otp_10836/1, io_lib_width_too_small/1,
io_with_huge_message_queue/1, format_string/1,
maps/1, coverage/1, otp_14178_unicode_atoms/1, otp_14175/1,
- otp_14285/1, limit_term/1, otp_14983/1]).
+ otp_14285/1, limit_term/1, otp_14983/1, otp_15103/1]).
-export([pretty/2, trf/3]).
@@ -63,7 +63,7 @@ all() ->
io_lib_print_binary_depth_one, otp_10302, otp_10755, otp_10836,
io_lib_width_too_small, io_with_huge_message_queue,
format_string, maps, coverage, otp_14178_unicode_atoms, otp_14175,
- otp_14285, limit_term, otp_14983].
+ otp_14285, limit_term, otp_14983, otp_15103].
%% Error cases for output.
error_1(Config) when is_list(Config) ->
@@ -2615,3 +2615,21 @@ trf(Format, Args, T) ->
trf(Format, Args, T, Opts) ->
lists:flatten(io_lib:format(Format, Args, [{chars_limit, T}|Opts])).
+
+otp_15103(_Config) ->
+ T = lists:duplicate(5, {a,b,c}),
+
+ S1 = io_lib:format("~0p", [T]),
+ "[{a,b,c},{a,b,c},{a,b,c},{a,b,c},{a,b,c}]" = lists:flatten(S1),
+ S2 = io_lib:format("~-0p", [T]),
+ "[{a,b,c},{a,b,c},{a,b,c},{a,b,c},{a,b,c}]" = lists:flatten(S2),
+ S3 = io_lib:format("~1p", [T]),
+ "[{a,\n b,\n c},\n {a,\n b,\n c},\n {a,\n b,\n c},\n {a,\n b,\n"
+ " c},\n {a,\n b,\n c}]" = lists:flatten(S3),
+
+ S4 = io_lib:format("~0P", [T, 5]),
+ "[{a,b,c},{a,b,...},{a,...},{...}|...]" = lists:flatten(S4),
+ S5 = io_lib:format("~1P", [T, 5]),
+ "[{a,\n b,\n c},\n {a,\n b,...},\n {a,...},\n {...}|...]" =
+ lists:flatten(S5),
+ ok.
diff --git a/lib/stdlib/test/maps_SUITE.erl b/lib/stdlib/test/maps_SUITE.erl
index a75751b31d..6374daa1d3 100644
--- a/lib/stdlib/test/maps_SUITE.erl
+++ b/lib/stdlib/test/maps_SUITE.erl
@@ -108,6 +108,8 @@ t_without_2(_Config) ->
%% error case
?badmap(a,without,[[a,b],a]) = (catch maps:without([a,b],id(a))),
?badmap(a,without,[{a,b},a]) = (catch maps:without({a,b},id(a))),
+ ?badmap({0,<<>>,97},without,[[],{0,<<>>,97}]) = (catch maps:without([], {0,<<>>,97})),
+ ?badmap({0,<<>>,97},without,[[false, -20, -8],{0,<<>>,97}]) = (catch maps:without([false, -20, -8], {0, <<>>, 97})),
?badarg(without,[a,#{}]) = (catch maps:without(a,#{})),
ok.
@@ -120,6 +122,8 @@ t_with_2(_Config) ->
%% error case
?badmap(a,with,[[a,b],a]) = (catch maps:with([a,b],id(a))),
?badmap(a,with,[{a,b},a]) = (catch maps:with({a,b},id(a))),
+ ?badmap({0,<<>>,97},with,[[],{0,<<>>,97}]) = (catch maps:with([], {0,<<>>,97})),
+ ?badmap({0,<<>>,97},with,[[false, -20, -8],{0,<<>>,97}]) = (catch maps:with([false, -20, -8], {0, <<>>, 97})),
?badarg(with,[a,#{}]) = (catch maps:with(a,#{})),
ok.
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-25 18:50:07 +0000