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-rw-r--r--lib/stdlib/src/Makefile5
-rw-r--r--lib/stdlib/src/beam_lib.erl105
-rw-r--r--lib/stdlib/src/erl_abstract_code.erl28
-rw-r--r--lib/stdlib/src/erl_internal.erl4
-rw-r--r--lib/stdlib/src/erl_lint.erl4
-rw-r--r--lib/stdlib/src/ets.erl2
-rw-r--r--lib/stdlib/src/gen_event.erl19
-rw-r--r--lib/stdlib/src/gen_fsm.erl67
-rw-r--r--lib/stdlib/src/gen_server.erl42
-rw-r--r--lib/stdlib/src/io_lib.erl87
-rw-r--r--lib/stdlib/src/io_lib_format.erl10
-rw-r--r--lib/stdlib/src/io_lib_fread.erl11
-rw-r--r--lib/stdlib/src/lib.erl223
-rw-r--r--lib/stdlib/src/otp_internal.erl49
-rw-r--r--lib/stdlib/src/qlc.erl45
-rw-r--r--lib/stdlib/src/rand.erl475
-rw-r--r--lib/stdlib/src/shell.erl17
-rw-r--r--lib/stdlib/src/stdlib.app.src2
-rw-r--r--lib/stdlib/src/string.erl1335
-rw-r--r--lib/stdlib/src/unicode.erl318
20 files changed, 2481 insertions, 367 deletions
diff --git a/lib/stdlib/src/Makefile b/lib/stdlib/src/Makefile
index ed3dfb342c..a7d53af7bc 100644
--- a/lib/stdlib/src/Makefile
+++ b/lib/stdlib/src/Makefile
@@ -58,6 +58,7 @@ MODULES= \
edlin \
edlin_expand \
epp \
+ erl_abstract_code \
erl_anno \
erl_bits \
erl_compile \
@@ -119,6 +120,7 @@ MODULES= \
sys \
timer \
unicode \
+ unicode_util \
win32reg \
zip
@@ -200,6 +202,9 @@ $(APP_TARGET): $(APP_SRC) ../vsn.mk
$(APPUP_TARGET): $(APPUP_SRC) ../vsn.mk
$(vsn_verbose)sed -e 's;%VSN%;$(VSN);' $< > $@
+unicode_util.erl: ../uc_spec/*
+ escript ../uc_spec/gen_unicode_mod.escript
+
# ----------------------------------------------------
# Release Target
# ----------------------------------------------------
diff --git a/lib/stdlib/src/beam_lib.erl b/lib/stdlib/src/beam_lib.erl
index 461acf03be..9e5e7b2e7e 100644
--- a/lib/stdlib/src/beam_lib.erl
+++ b/lib/stdlib/src/beam_lib.erl
@@ -54,6 +54,7 @@
%%-------------------------------------------------------------------------
-type beam() :: module() | file:filename() | binary().
+-type debug_info() :: {DbgiVersion :: atom(), Backend :: module(), Data :: term()} | 'no_debug_info'.
-type forms() :: [erl_parse:abstract_form() | erl_parse:form_info()].
@@ -63,8 +64,9 @@
-type label() :: integer().
-type chunkid() :: nonempty_string(). % approximation of the strings below
-%% "Abst" | "Attr" | "CInf" | "ExpT" | "ImpT" | "LocT" | "Atom" | "AtU8".
--type chunkname() :: 'abstract_code' | 'attributes' | 'compile_info'
+%% "Abst" | "Dbgi" | "Attr" | "CInf" | "ExpT" | "ImpT" | "LocT" | "Atom" | "AtU8".
+-type chunkname() :: 'abstract_code' | 'debug_info'
+ | 'attributes' | 'compile_info'
| 'exports' | 'labeled_exports'
| 'imports' | 'indexed_imports'
| 'locals' | 'labeled_locals'
@@ -77,6 +79,7 @@
-type chunkdata() :: {chunkid(), dataB()}
| {'abstract_code', abst_code()}
+ | {'debug_info', debug_info()}
| {'attributes', [attrib_entry()]}
| {'compile_info', [compinfo_entry()]}
| {'exports', [{atom(), arity()}]}
@@ -99,7 +102,7 @@
| {'file_error', file:filename(), file:posix()}.
-type chnk_rsn() :: {'unknown_chunk', file:filename(), atom()}
| {'key_missing_or_invalid', file:filename(),
- 'abstract_code'}
+ 'abstract_code' | 'debug_info'}
| info_rsn().
-type cmp_rsn() :: {'modules_different', module(), module()}
| {'chunks_different', chunkid()}
@@ -267,9 +270,9 @@ format_error({modules_different, Module1, Module2}) ->
[Module1, Module2]);
format_error({not_a_directory, Name}) ->
io_lib:format("~tp: Not a directory~n", [Name]);
-format_error({key_missing_or_invalid, File, abstract_code}) ->
- io_lib:format("~tp: Cannot decrypt abstract code because key is missing or invalid",
- [File]);
+format_error({key_missing_or_invalid, File, ChunkId}) ->
+ io_lib:format("~tp: Cannot decrypt ~ts because key is missing or invalid",
+ [File, ChunkId]);
format_error(badfun) ->
"not a fun or the fun has the wrong arity";
format_error(exists) ->
@@ -510,9 +513,9 @@ read_chunk_data(File0, ChunkNames) ->
read_chunk_data(File0, ChunkNames0, Options)
when is_atom(File0); is_list(File0); is_binary(File0) ->
File = beam_filename(File0),
- {ChunkIds, Names} = check_chunks(ChunkNames0, File, [], []),
+ {ChunkIds, Names, Optional} = check_chunks(ChunkNames0, File, [], [], []),
AllowMissingChunks = member(allow_missing_chunks, Options),
- {ok, Module, Chunks} = scan_beam(File, ChunkIds, AllowMissingChunks),
+ {ok, Module, Chunks} = scan_beam(File, ChunkIds, AllowMissingChunks, Optional),
AT = ets:new(beam_symbols, []),
T = {empty, AT},
try chunks_to_data(Names, Chunks, File, Chunks, Module, T, [])
@@ -520,31 +523,34 @@ read_chunk_data(File0, ChunkNames0, Options)
end.
%% -> {ok, list()} | throw(Error)
-check_chunks([atoms | Ids], File, IL, L) ->
- check_chunks(Ids, File, ["Atom", "AtU8" | IL], [{atom_chunk, atoms} | L]);
-check_chunks([ChunkName | Ids], File, IL, L) when is_atom(ChunkName) ->
+check_chunks([atoms | Ids], File, IL, L, O) ->
+ check_chunks(Ids, File, ["Atom", "AtU8" | IL],
+ [{atom_chunk, atoms} | L], ["Atom", "AtU8" | O]);
+check_chunks([abstract_code | Ids], File, IL, L, O) ->
+ check_chunks(Ids, File, ["Abst", "Dbgi" | IL],
+ [{abst_chunk, abstract_code} | L], ["Abst", "Dbgi" | O]);
+check_chunks([ChunkName | Ids], File, IL, L, O) when is_atom(ChunkName) ->
ChunkId = chunk_name_to_id(ChunkName, File),
- check_chunks(Ids, File, [ChunkId | IL], [{ChunkId, ChunkName} | L]);
-check_chunks([ChunkId | Ids], File, IL, L) -> % when is_list(ChunkId)
- check_chunks(Ids, File, [ChunkId | IL], [{ChunkId, ChunkId} | L]);
-check_chunks([], _File, IL, L) ->
- {lists:usort(IL), reverse(L)}.
+ check_chunks(Ids, File, [ChunkId | IL], [{ChunkId, ChunkName} | L], O);
+check_chunks([ChunkId | Ids], File, IL, L, O) -> % when is_list(ChunkId)
+ check_chunks(Ids, File, [ChunkId | IL], [{ChunkId, ChunkId} | L], O);
+check_chunks([], _File, IL, L, O) ->
+ {lists:usort(IL), reverse(L), O}.
%% -> {ok, Module, Data} | throw(Error)
scan_beam(File, What) ->
- scan_beam(File, What, false).
+ scan_beam(File, What, false, []).
%% -> {ok, Module, Data} | throw(Error)
-scan_beam(File, What0, AllowMissingChunks) ->
+scan_beam(File, What0, AllowMissingChunks, OptionalChunks) ->
case scan_beam1(File, What0) of
{missing, _FD, Mod, Data, What} when AllowMissingChunks ->
{ok, Mod, [{Id, missing_chunk} || Id <- What] ++ Data};
- {missing, _FD, Mod, Data, ["Atom"]} ->
- {ok, Mod, Data};
- {missing, _FD, Mod, Data, ["AtU8"]} ->
- {ok, Mod, Data};
- {missing, FD, _Mod, _Data, What} ->
- error({missing_chunk, filename(FD), hd(What)});
+ {missing, FD, Mod, Data, What} ->
+ case What -- OptionalChunks of
+ [] -> {ok, Mod, Data};
+ [Missing | _] -> error({missing_chunk, filename(FD), Missing})
+ end;
R ->
R
end.
@@ -638,6 +644,22 @@ get_chunk(Id, Pos, Size, FD) ->
chunks_to_data([{atom_chunk, Name} | CNs], Chunks, File, Cs, Module, Atoms, L) ->
{NewAtoms, Ret} = chunk_to_data(Name, <<"">>, File, Cs, Atoms, Module),
chunks_to_data(CNs, Chunks, File, Cs, Module, NewAtoms, [Ret | L]);
+chunks_to_data([{abst_chunk, Name} | CNs], Chunks, File, Cs, Module, Atoms, L) ->
+ DbgiChunk = proplists:get_value("Dbgi", Chunks, <<"">>),
+ {NewAtoms, Ret} =
+ case catch chunk_to_data(debug_info, DbgiChunk, File, Cs, Atoms, Module) of
+ {DbgiAtoms, {debug_info, {debug_info_v1, Backend, Metadata}}} ->
+ case Backend:debug_info(erlang_v1, Module, Metadata, []) of
+ {ok, Code} -> {DbgiAtoms, {abstract_code, {raw_abstract_v1, Code}}};
+ {error, _} -> {DbgiAtoms, {abstract_code, no_abstract_code}}
+ end;
+ {error,beam_lib,{key_missing_or_invalid,Path,debug_info}} ->
+ error({key_missing_or_invalid,Path,abstract_code});
+ _ ->
+ AbstChunk = proplists:get_value("Abst", Chunks, <<"">>),
+ chunk_to_data(Name, AbstChunk, File, Cs, Atoms, Module)
+ end,
+ chunks_to_data(CNs, Chunks, File, Cs, Module, NewAtoms, [Ret | L]);
chunks_to_data([{Id, Name} | CNs], Chunks, File, Cs, Module, Atoms, L) ->
{_Id, Chunk} = lists:keyfind(Id, 1, Chunks),
{NewAtoms, Ret} = chunk_to_data(Name, Chunk, File, Cs, Atoms, Module),
@@ -660,13 +682,30 @@ chunk_to_data(compile_info=Id, Chunk, File, _Cs, AtomTable, _Mod) ->
error:badarg ->
error({invalid_chunk, File, chunk_name_to_id(Id, File)})
end;
+chunk_to_data(debug_info=Id, Chunk, File, _Cs, AtomTable, Mod) ->
+ case Chunk of
+ <<>> ->
+ {AtomTable, {Id, no_debug_info}};
+ <<0:8,N:8,Mode0:N/binary,Rest/binary>> ->
+ Mode = binary_to_atom(Mode0, utf8),
+ Term = decrypt_chunk(Mode, Mod, File, Id, Rest),
+ {AtomTable, {Id, Term}};
+ _ ->
+ case catch binary_to_term(Chunk) of
+ {'EXIT', _} ->
+ error({invalid_chunk, File, chunk_name_to_id(Id, File)});
+ Term ->
+ {AtomTable, {Id, Term}}
+ end
+ end;
chunk_to_data(abstract_code=Id, Chunk, File, _Cs, AtomTable, Mod) ->
case Chunk of
<<>> ->
{AtomTable, {Id, no_abstract_code}};
<<0:8,N:8,Mode0:N/binary,Rest/binary>> ->
Mode = binary_to_atom(Mode0, utf8),
- decrypt_abst(Mode, Mod, File, Id, AtomTable, Rest);
+ Term = decrypt_chunk(Mode, Mod, File, Id, Rest),
+ {AtomTable, {Id, anno_from_term(Term)}};
_ ->
case catch binary_to_term(Chunk) of
{'EXIT', _} ->
@@ -705,6 +744,7 @@ chunk_name_to_id(locals, _) -> "LocT";
chunk_name_to_id(labeled_locals, _) -> "LocT";
chunk_name_to_id(attributes, _) -> "Attr";
chunk_name_to_id(abstract_code, _) -> "Abst";
+chunk_name_to_id(debug_info, _) -> "Dbgi";
chunk_name_to_id(compile_info, _) -> "CInf";
chunk_name_to_id(Other, File) ->
error({unknown_chunk, File, Other}).
@@ -894,23 +934,18 @@ mandatory_chunks() ->
-define(CRYPTO_KEY_SERVER, beam_lib__crypto_key_server).
-decrypt_abst(Type, Module, File, Id, AtomTable, Bin) ->
+decrypt_chunk(Type, Module, File, Id, Bin) ->
try
KeyString = get_crypto_key({debug_info, Type, Module, File}),
- Key = make_crypto_key(Type, KeyString),
- Term = decrypt_abst_1(Key, Bin),
- {AtomTable, {Id, Term}}
+ {Type,Key,IVec,_BlockSize} = make_crypto_key(Type, KeyString),
+ ok = start_crypto(),
+ NewBin = crypto:block_decrypt(Type, Key, IVec, Bin),
+ binary_to_term(NewBin)
catch
_:_ ->
error({key_missing_or_invalid, File, Id})
end.
-decrypt_abst_1({Type,Key,IVec,_BlockSize}, Bin) ->
- ok = start_crypto(),
- NewBin = crypto:block_decrypt(Type, Key, IVec, Bin),
- Term = binary_to_term(NewBin),
- anno_from_term(Term).
-
anno_from_term({raw_abstract_v1, Forms}) ->
{raw_abstract_v1, anno_from_forms(Forms)};
anno_from_term({Tag, Forms}) when Tag =:= abstract_v1; Tag =:= abstract_v2 ->
diff --git a/lib/stdlib/src/erl_abstract_code.erl b/lib/stdlib/src/erl_abstract_code.erl
new file mode 100644
index 0000000000..6e45f11aa3
--- /dev/null
+++ b/lib/stdlib/src/erl_abstract_code.erl
@@ -0,0 +1,28 @@
+-module(erl_abstract_code).
+-export([debug_info/4]).
+
+debug_info(_Format, _Module, {none,_CompilerOpts}, _Opts) ->
+ {error, missing};
+debug_info(erlang_v1, _Module, {AbstrCode,_CompilerOpts}, _Opts) ->
+ {ok, AbstrCode};
+debug_info(core_v1, _Module, {AbstrCode,CompilerOpts}, Opts) ->
+ CoreOpts = add_core_returns(delete_reports(CompilerOpts ++ Opts)),
+ try compile:noenv_forms(AbstrCode, CoreOpts) of
+ {ok, _, Core, _} -> {ok, Core};
+ _What -> {error, failed_conversion}
+ catch
+ error:_ -> {error, failed_conversion}
+ end;
+debug_info(_, _, _, _) ->
+ {error, unknown_format}.
+
+delete_reports(Opts) ->
+ [Opt || Opt <- Opts, not is_report_option(Opt)].
+
+is_report_option(report) -> true;
+is_report_option(report_errors) -> true;
+is_report_option(report_warnings) -> true;
+is_report_option(_) -> false.
+
+add_core_returns(Opts) ->
+ [to_core, return_errors, return_warnings] ++ Opts.
diff --git a/lib/stdlib/src/erl_internal.erl b/lib/stdlib/src/erl_internal.erl
index 006e7946af..9a1b17fdb7 100644
--- a/lib/stdlib/src/erl_internal.erl
+++ b/lib/stdlib/src/erl_internal.erl
@@ -331,6 +331,8 @@ bif(list_to_float, 1) -> true;
bif(list_to_integer, 1) -> true;
bif(list_to_integer, 2) -> true;
bif(list_to_pid, 1) -> true;
+bif(list_to_port, 1) -> true;
+bif(list_to_ref, 1) -> true;
bif(list_to_tuple, 1) -> true;
bif(load_module, 2) -> true;
bif(make_ref, 0) -> true;
@@ -348,6 +350,7 @@ bif(nodes, 1) -> true;
bif(now, 0) -> true;
bif(open_port, 2) -> true;
bif(pid_to_list, 1) -> true;
+bif(port_to_list, 1) -> true;
bif(port_close, 1) -> true;
bif(port_command, 2) -> true;
bif(port_command, 3) -> true;
@@ -361,6 +364,7 @@ bif(process_info, 2) -> true;
bif(processes, 0) -> true;
bif(purge_module, 1) -> true;
bif(put, 2) -> true;
+bif(ref_to_list, 1) -> true;
bif(register, 2) -> true;
bif(registered, 0) -> true;
bif(round, 1) -> true;
diff --git a/lib/stdlib/src/erl_lint.erl b/lib/stdlib/src/erl_lint.erl
index 78b7a0e751..7c40058dd8 100644
--- a/lib/stdlib/src/erl_lint.erl
+++ b/lib/stdlib/src/erl_lint.erl
@@ -3883,6 +3883,10 @@ extract_sequence(4, [$t, $p | Fmt], Need) ->
extract_sequence(5, [$p|Fmt], Need);
extract_sequence(4, [$t, $P | Fmt], Need) ->
extract_sequence(5, [$P|Fmt], Need);
+extract_sequence(4, [$t, $w | Fmt], Need) ->
+ extract_sequence(5, [$w|Fmt], Need);
+extract_sequence(4, [$t, $W | Fmt], Need) ->
+ extract_sequence(5, [$W|Fmt], Need);
extract_sequence(4, [$t, C | _Fmt], _Need) ->
{error,"invalid control ~t" ++ [C]};
extract_sequence(4, [$l, $p | Fmt], Need) ->
diff --git a/lib/stdlib/src/ets.erl b/lib/stdlib/src/ets.erl
index 195a407570..894c15b0cf 100644
--- a/lib/stdlib/src/ets.erl
+++ b/lib/stdlib/src/ets.erl
@@ -54,7 +54,7 @@
| {tab(),integer(),integer(),comp_match_spec(),list(),integer()}
| {tab(),_,_,integer(),comp_match_spec(),list(),integer(),integer()}.
--opaque tid() :: integer().
+-opaque tid() :: reference().
-type match_pattern() :: atom() | tuple().
-type match_spec() :: [{match_pattern(), [_], [_]}].
diff --git a/lib/stdlib/src/gen_event.erl b/lib/stdlib/src/gen_event.erl
index 0aebf1bdc5..0c50b2aa08 100644
--- a/lib/stdlib/src/gen_event.erl
+++ b/lib/stdlib/src/gen_event.erl
@@ -109,7 +109,8 @@
State :: term(),
Status :: term().
--optional_callbacks([format_status/2]).
+-optional_callbacks(
+ [handle_info/2, terminate/2, code_change/3, format_status/2]).
%%---------------------------------------------------------------------------
@@ -577,6 +578,10 @@ server_update(Handler1, Func, Event, SName) ->
do_terminate(Mod1, Handler1, remove_handler, State,
remove, SName, normal),
no;
+ {'EXIT', {undef, [{Mod1, handle_info, [_,_], _}|_]}} ->
+ error_logger:warning_msg("** Undefined handle_info in ~p~n"
+ "** Unhandled message: ~p~n", [Mod1, Event]),
+ {ok, Handler1};
Other ->
do_terminate(Mod1, Handler1, {error, Other}, State,
Event, SName, crash),
@@ -698,9 +703,15 @@ server_call_update(Handler1, Query, SName) ->
end.
do_terminate(Mod, Handler, Args, State, LastIn, SName, Reason) ->
- Res = (catch Mod:terminate(Args, State)),
- report_terminate(Handler, Reason, Args, State, LastIn, SName, Res),
- Res.
+ case erlang:function_exported(Mod, terminate, 2) of
+ true ->
+ Res = (catch Mod:terminate(Args, State)),
+ report_terminate(Handler, Reason, Args, State, LastIn, SName, Res),
+ Res;
+ false ->
+ report_terminate(Handler, Reason, Args, State, LastIn, SName, ok),
+ ok
+ end.
report_terminate(Handler, crash, {error, Why}, State, LastIn, SName, _) ->
report_terminate(Handler, Why, State, LastIn, SName);
diff --git a/lib/stdlib/src/gen_fsm.erl b/lib/stdlib/src/gen_fsm.erl
index e925a75fe8..d413da3ea1 100644
--- a/lib/stdlib/src/gen_fsm.erl
+++ b/lib/stdlib/src/gen_fsm.erl
@@ -124,6 +124,26 @@
system_replace_state/2,
format_status/2]).
+-deprecated({start, 3, next_major_release}).
+-deprecated({start, 4, next_major_release}).
+-deprecated({start_link, 3, next_major_release}).
+-deprecated({start_link, 4, next_major_release}).
+-deprecated({stop, 1, next_major_release}).
+-deprecated({stop, 3, next_major_release}).
+-deprecated({send_event, 2, next_major_release}).
+-deprecated({sync_send_event, 2, next_major_release}).
+-deprecated({sync_send_event, 3, next_major_release}).
+-deprecated({send_all_state_event, 2, next_major_release}).
+-deprecated({sync_send_all_state_event, 2, next_major_release}).
+-deprecated({sync_send_all_state_event, 3, next_major_release}).
+-deprecated({reply, 2, next_major_release}).
+-deprecated({start_timer, 2, next_major_release}).
+-deprecated({send_event_after, 2, next_major_release}).
+-deprecated({cancel_timer, 1, next_major_release}).
+-deprecated({enter_loop, 4, next_major_release}).
+-deprecated({enter_loop, 5, next_major_release}).
+-deprecated({enter_loop, 6, next_major_release}).
+
-import(error_logger, [format/2]).
%%% ---------------------------------------------------
@@ -169,7 +189,8 @@
State :: term(),
Status :: term().
--optional_callbacks([format_status/2]).
+-optional_callbacks(
+ [handle_info/3, terminate/3, code_change/4, format_status/2]).
%%% ---------------------------------------------------
%%% Starts a generic state machine.
@@ -466,6 +487,10 @@ handle_msg(Msg, Parent, Name, StateName, StateData, Mod, _Time) -> %No debug her
StateName, NStateData, [])),
reply(From, Reply),
exit(R);
+ {'EXIT', {undef, [{Mod, handle_info, [_,_,_], _}|_]}} ->
+ error_logger:warning_msg("** Undefined handle_info in ~p~n"
+ "** Unhandled message: ~p~n", [Mod, Msg]),
+ loop(Parent, Name, StateName, StateData, Mod, infinity, []);
{'EXIT', What} ->
terminate(What, Name, Msg, Mod, StateName, StateData, []);
Reply ->
@@ -540,24 +565,30 @@ reply(Name, {To, Tag}, Reply, Debug, StateName) ->
-spec terminate(term(), _, _, atom(), _, _, _) -> no_return().
terminate(Reason, Name, Msg, Mod, StateName, StateData, Debug) ->
- case catch Mod:terminate(Reason, StateName, StateData) of
- {'EXIT', R} ->
- FmtStateData = format_status(terminate, Mod, get(), StateData),
- error_info(R, Name, Msg, StateName, FmtStateData, Debug),
- exit(R);
- _ ->
- case Reason of
- normal ->
- exit(normal);
- shutdown ->
- exit(shutdown);
- {shutdown,_}=Shutdown ->
- exit(Shutdown);
+ case erlang:function_exported(Mod, terminate, 3) of
+ true ->
+ case catch Mod:terminate(Reason, StateName, StateData) of
+ {'EXIT', R} ->
+ FmtStateData = format_status(terminate, Mod, get(), StateData),
+ error_info(R, Name, Msg, StateName, FmtStateData, Debug),
+ exit(R);
_ ->
- FmtStateData = format_status(terminate, Mod, get(), StateData),
- error_info(Reason,Name,Msg,StateName,FmtStateData,Debug),
- exit(Reason)
- end
+ ok
+ end;
+ false ->
+ ok
+ end,
+ case Reason of
+ normal ->
+ exit(normal);
+ shutdown ->
+ exit(shutdown);
+ {shutdown,_}=Shutdown ->
+ exit(Shutdown);
+ _ ->
+ FmtStateData1 = format_status(terminate, Mod, get(), StateData),
+ error_info(Reason,Name,Msg,StateName,FmtStateData1,Debug),
+ exit(Reason)
end.
error_info(Reason, Name, Msg, StateName, StateData, Debug) ->
diff --git a/lib/stdlib/src/gen_server.erl b/lib/stdlib/src/gen_server.erl
index 284810c971..8504af86f8 100644
--- a/lib/stdlib/src/gen_server.erl
+++ b/lib/stdlib/src/gen_server.erl
@@ -146,8 +146,8 @@
State :: term(),
Status :: term().
--optional_callbacks([format_status/2]).
-
+-optional_callbacks(
+ [handle_info/2, terminate/2, code_change/3, format_status/2]).
%%% -----------------------------------------------------------------
%%% Starts a generic server.
@@ -602,6 +602,17 @@ try_dispatch(Mod, Func, Msg, State) ->
catch
throw:R ->
{ok, R};
+ error:undef = R when Func == handle_info ->
+ case erlang:function_exported(Mod, handle_info, 2) of
+ false ->
+ error_logger:warning_msg("** Undefined handle_info in ~p~n"
+ "** Unhandled message: ~p~n",
+ [Mod, Msg]),
+ {ok, {noreply, State}};
+ true ->
+ Stacktrace = erlang:get_stacktrace(),
+ {'EXIT', {R, Stacktrace}, {R, Stacktrace}}
+ end;
error:R ->
Stacktrace = erlang:get_stacktrace(),
{'EXIT', {R, Stacktrace}, {R, Stacktrace}};
@@ -625,17 +636,22 @@ try_handle_call(Mod, Msg, From, State) ->
end.
try_terminate(Mod, Reason, State) ->
- try
- {ok, Mod:terminate(Reason, State)}
- catch
- throw:R ->
- {ok, R};
- error:R ->
- Stacktrace = erlang:get_stacktrace(),
- {'EXIT', {R, Stacktrace}, {R, Stacktrace}};
- exit:R ->
- Stacktrace = erlang:get_stacktrace(),
- {'EXIT', R, {R, Stacktrace}}
+ case erlang:function_exported(Mod, terminate, 2) of
+ true ->
+ try
+ {ok, Mod:terminate(Reason, State)}
+ catch
+ throw:R ->
+ {ok, R};
+ error:R ->
+ Stacktrace = erlang:get_stacktrace(),
+ {'EXIT', {R, Stacktrace}, {R, Stacktrace}};
+ exit:R ->
+ Stacktrace = erlang:get_stacktrace(),
+ {'EXIT', R, {R, Stacktrace}}
+ end;
+ false ->
+ {ok, ok}
end.
diff --git a/lib/stdlib/src/io_lib.erl b/lib/stdlib/src/io_lib.erl
index 28e5007e5a..5ed2f4d888 100644
--- a/lib/stdlib/src/io_lib.erl
+++ b/lib/stdlib/src/io_lib.erl
@@ -268,47 +268,61 @@ write(Term, D, false) ->
-spec write(Term, Depth) -> chars() when
Term :: term(),
+ Depth :: depth();
+ (Term, Options) -> chars() when
+ Term :: term(),
+ Options :: [Option],
+ Option :: {'depth', Depth}
+ | {'encoding', 'latin1' | 'utf8' | 'unicode'},
Depth :: depth().
-write(_Term, 0) -> "...";
-write(Term, _D) when is_integer(Term) -> integer_to_list(Term);
-write(Term, _D) when is_float(Term) -> io_lib_format:fwrite_g(Term);
-write(Atom, _D) when is_atom(Atom) -> write_atom(Atom);
-write(Term, _D) when is_port(Term) -> write_port(Term);
-write(Term, _D) when is_pid(Term) -> pid_to_list(Term);
-write(Term, _D) when is_reference(Term) -> write_ref(Term);
-write(<<_/bitstring>>=Term, D) -> write_binary(Term, D);
-write([], _D) -> "[]";
-write({}, _D) -> "{}";
-write([H|T], D) ->
+write(Term, Options) when is_list(Options) ->
+ Depth = get_option(depth, Options, -1),
+ Encoding = get_option(encoding, Options, epp:default_encoding()),
+ write1(Term, Depth, Encoding);
+write(Term, Depth) ->
+ write1(Term, Depth, latin1).
+
+write1(_Term, 0, _E) -> "...";
+write1(Term, _D, _E) when is_integer(Term) -> integer_to_list(Term);
+write1(Term, _D, _E) when is_float(Term) -> io_lib_format:fwrite_g(Term);
+write1(Atom, _D, latin1) when is_atom(Atom) -> write_atom_as_latin1(Atom);
+write1(Atom, _D, _E) when is_atom(Atom) -> write_atom(Atom);
+write1(Term, _D, _E) when is_port(Term) -> write_port(Term);
+write1(Term, _D, _E) when is_pid(Term) -> pid_to_list(Term);
+write1(Term, _D, _E) when is_reference(Term) -> write_ref(Term);
+write1(<<_/bitstring>>=Term, D, _E) -> write_binary(Term, D);
+write1([], _D, _E) -> "[]";
+write1({}, _D, _E) -> "{}";
+write1([H|T], D, E) ->
if
D =:= 1 -> "[...]";
true ->
- [$[,[write(H, D-1)|write_tail(T, D-1, $|)],$]]
+ [$[,[write1(H, D-1, E)|write_tail(T, D-1, E, $|)],$]]
end;
-write(F, _D) when is_function(F) ->
+write1(F, _D, _E) when is_function(F) ->
erlang:fun_to_list(F);
-write(Term, D) when is_map(Term) ->
- write_map(Term, D);
-write(T, D) when is_tuple(T) ->
+write1(Term, D, E) when is_map(Term) ->
+ write_map(Term, D, E);
+write1(T, D, E) when is_tuple(T) ->
if
D =:= 1 -> "{...}";
true ->
[${,
- [write(element(1, T), D-1)|
- write_tail(tl(tuple_to_list(T)), D-1, $,)],
+ [write1(element(1, T), D-1, E)|
+ write_tail(tl(tuple_to_list(T)), D-1, E, $,)],
$}]
end.
%% write_tail(List, Depth, CharacterBeforeDots)
%% Test the terminating case first as this looks better with depth.
-write_tail([], _D, _S) -> "";
-write_tail(_, 1, S) -> [S | "..."];
-write_tail([H|T], D, S) ->
- [$,,write(H, D-1)|write_tail(T, D-1, S)];
-write_tail(Other, D, S) ->
- [S,write(Other, D-1)].
+write_tail([], _D, _E, _S) -> "";
+write_tail(_, 1, _E, S) -> [S | "..."];
+write_tail([H|T], D, E, S) ->
+ [$,,write1(H, D-1, E)|write_tail(T, D-1, E, S)];
+write_tail(Other, D, E, S) ->
+ [S,write1(Other, D-1, E)].
write_port(Port) ->
erlang:port_to_list(Port).
@@ -316,17 +330,17 @@ write_port(Port) ->
write_ref(Ref) ->
erlang:ref_to_list(Ref).
-write_map(Map, D) when is_integer(D) ->
- [$#,${,write_map_body(maps:to_list(Map), D),$}].
+write_map(Map, D, E) when is_integer(D) ->
+ [$#,${,write_map_body(maps:to_list(Map), D, E),$}].
-write_map_body(_, 0) -> "...";
-write_map_body([],_) -> [];
-write_map_body([{K,V}],D) -> write_map_assoc(K,V,D);
-write_map_body([{K,V}|KVs], D) ->
- [write_map_assoc(K,V,D),$, | write_map_body(KVs,D-1)].
+write_map_body(_, 0, _E) -> "...";
+write_map_body([], _, _E) -> [];
+write_map_body([{K,V}], D, E) -> write_map_assoc(K, V, D, E);
+write_map_body([{K,V}|KVs], D, E) ->
+ [write_map_assoc(K, V, D, E),$, | write_map_body(KVs, D-1, E)].
-write_map_assoc(K,V,D) ->
- [write(K,D - 1),"=>",write(V,D-1)].
+write_map_assoc(K, V, D, E) ->
+ [write1(K, D - 1, E),"=>",write1(V, D-1, E)].
write_binary(B, D) when is_integer(D) ->
[$<,$<,write_binary_body(B, D),$>,$>].
@@ -344,6 +358,13 @@ write_binary_body(B, _D) ->
<<X:L>> = B,
[integer_to_list(X),$:,integer_to_list(L)].
+get_option(Key, TupleList, Default) ->
+ case lists:keyfind(Key, 1, TupleList) of
+ false -> Default;
+ {Key, Value} -> Value;
+ _ -> Default
+ end.
+
%%% There are two functions to write Unicode atoms:
%%% - they both escape control characters < 160;
%%% - write_atom() never escapes characters >= 160;
diff --git a/lib/stdlib/src/io_lib_format.erl b/lib/stdlib/src/io_lib_format.erl
index 3113767614..14d925bacf 100644
--- a/lib/stdlib/src/io_lib_format.erl
+++ b/lib/stdlib/src/io_lib_format.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2017. 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.
@@ -257,12 +257,12 @@ indentation([], I) -> I.
%% This is the main dispatch function for the various formatting commands.
%% Field widths and precisions have already been calculated.
-control($w, [A], F, Adj, P, Pad, _Enc, _Str, _I) ->
- term(io_lib:write(A, -1), F, Adj, P, Pad);
+control($w, [A], F, Adj, P, Pad, Enc, _Str, _I) ->
+ term(io_lib:write(A, [{depth,-1}, {encoding, Enc}]), F, Adj, P, Pad);
control($p, [A], F, Adj, P, Pad, Enc, Str, I) ->
print(A, -1, F, Adj, P, Pad, Enc, Str, I);
-control($W, [A,Depth], F, Adj, P, Pad, _Enc, _Str, _I) when is_integer(Depth) ->
- term(io_lib:write(A, Depth), F, Adj, P, Pad);
+control($W, [A,Depth], F, Adj, P, Pad, Enc, _Str, _I) when is_integer(Depth) ->
+ term(io_lib:write(A, [{depth,Depth}, {encoding, Enc}]), F, Adj, P, Pad);
control($P, [A,Depth], F, Adj, P, Pad, Enc, Str, I) when is_integer(Depth) ->
print(A, Depth, F, Adj, P, Pad, Enc, Str, I);
control($s, [A], F, Adj, P, Pad, latin1, _Str, _I) when is_atom(A) ->
diff --git a/lib/stdlib/src/io_lib_fread.erl b/lib/stdlib/src/io_lib_fread.erl
index 6a8f8f728e..983e8d4566 100644
--- a/lib/stdlib/src/io_lib_fread.erl
+++ b/lib/stdlib/src/io_lib_fread.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2017. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -159,8 +159,8 @@ fread_field([$t|Format], F, Sup, _Unic) ->
fread_field(Format, F, Sup, Unic) ->
{Format,F,Sup,Unic}.
-%% fread1(Format, FieldWidth, Suppress, Line, N, Results, AllFormat)
-%% fread1(Format, FieldWidth, Suppress, Line, N, Results)
+%% fread1(Format, FieldWidth, Suppress, Unicode, Line, N, Results, AllFormat)
+%% fread1(Format, FieldWidth, Suppress, Unicode, Line, N, Results)
%% The main dispatch function for the formatting commands. Done in two
%% stages so format commands that need no input can always be processed.
@@ -231,9 +231,8 @@ fread1([$s|Format], none, Sup, U, Line0, N0, Res) ->
fread1([$s|Format], F, Sup, U, Line0, N, Res) ->
{Line,Cs} = fread_chars(Line0, F, U),
fread_string(Cs, Sup, U, Format, Line, N+F, Res);
-%% XXX:PaN Atoms still only latin1...
-fread1([$a|Format], none, Sup, false, Line0, N0, Res) ->
- {Line,N,Cs} = fread_string_cs(Line0, N0, false),
+fread1([$a|Format], none, Sup, U, Line0, N0, Res) ->
+ {Line,N,Cs} = fread_string_cs(Line0, N0, U),
fread_atom(Cs, Sup, Format, Line, N, Res);
fread1([$a|Format], F, Sup, false, Line0, N, Res) ->
{Line,Cs} = fread_chars(Line0, F, false),
diff --git a/lib/stdlib/src/lib.erl b/lib/stdlib/src/lib.erl
index 56654097d9..aa6797bce6 100644
--- a/lib/stdlib/src/lib.erl
+++ b/lib/stdlib/src/lib.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2017. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -22,6 +22,9 @@
-export([flush_receive/0, error_message/2, progname/0, nonl/1, send/2,
sendw/2, eval_str/1]).
+-export([extended_parse_exprs/1, extended_parse_term/1,
+ subst_values_for_vars/2]).
+
-export([format_exception/6, format_exception/7,
format_stacktrace/4, format_stacktrace/5,
format_call/4, format_call/5, format_fun/1]).
@@ -127,6 +130,224 @@ all_white([$\t|T]) -> all_white(T);
all_white([]) -> true;
all_white(_) -> false.
+%% `Tokens' is assumed to have been scanned with the 'text' option.
+%% The annotations of the returned expressions are locations.
+%%
+%% Can handle pids, ports, references, and external funs ("items").
+%% Known items are represented by variables in the erl_parse tree, and
+%% the items themselves are stored in the returned bindings.
+
+-spec extended_parse_exprs(Tokens) ->
+ {'ok', ExprList, Bindings} | {'error', ErrorInfo} when
+ Tokens :: [erl_scan:token()],
+ ExprList :: [erl_parse:abstract_expr()],
+ Bindings :: erl_eval:binding_struct(),
+ ErrorInfo :: erl_parse:error_info().
+
+extended_parse_exprs(Tokens) ->
+ Ts = tokens_fixup(Tokens),
+ case erl_parse:parse_exprs(Ts) of
+ {ok, Exprs0} ->
+ {Exprs, Bs} = expr_fixup(Exprs0),
+ {ok, reset_expr_anno(Exprs), Bs};
+ _ErrorInfo ->
+ erl_parse:parse_exprs(reset_token_anno(Ts))
+ end.
+
+tokens_fixup([]) -> [];
+tokens_fixup([T|Ts]=Ts0) ->
+ try token_fixup(Ts0) of
+ {NewT, NewTs} ->
+ [NewT|tokens_fixup(NewTs)]
+ catch
+ _:_ ->
+ [T|tokens_fixup(Ts)]
+ end.
+
+token_fixup(Ts) ->
+ {AnnoL, NewTs, FixupTag} = unscannable(Ts),
+ String = lists:append([erl_anno:text(A) || A <- AnnoL]),
+ _ = (fixup_fun(FixupTag))(String),
+ NewAnno = erl_anno:set_text(fixup_text(FixupTag), hd(AnnoL)),
+ {{string, NewAnno, String}, NewTs}.
+
+unscannable([{'#', A1}, {var, A2, 'Fun'}, {'<', A3}, {atom, A4, _},
+ {'.', A5}, {float, A6, _}, {'>', A7}|Ts]) ->
+ {[A1, A2, A3, A4, A5, A6, A7], Ts, function};
+unscannable([{'#', A1}, {var, A2, 'Fun'}, {'<', A3}, {atom, A4, _},
+ {'.', A5}, {atom, A6, _}, {'.', A7}, {integer, A8, _},
+ {'>', A9}|Ts]) ->
+ {[A1, A2, A3, A4, A5, A6, A7, A8, A9], Ts, function};
+unscannable([{'<', A1}, {float, A2, _}, {'.', A3}, {integer, A4, _},
+ {'>', A5}|Ts]) ->
+ {[A1, A2, A3, A4, A5], Ts, pid};
+unscannable([{'#', A1}, {var, A2, 'Port'}, {'<', A3}, {float, A4, _},
+ {'>', A5}|Ts]) ->
+ {[A1, A2, A3, A4, A5], Ts, port};
+unscannable([{'#', A1}, {var, A2, 'Ref'}, {'<', A3}, {float, A4, _},
+ {'.', A5}, {float, A6, _}, {'>', A7}|Ts]) ->
+ {[A1, A2, A3, A4, A5, A6, A7], Ts, reference}.
+
+expr_fixup(Expr0) ->
+ {Expr, Bs, _} = expr_fixup(Expr0, erl_eval:new_bindings(), 1),
+ {Expr, Bs}.
+
+expr_fixup({string,A,S}=T, Bs0, I) ->
+ try string_fixup(A, S) of
+ Value ->
+ Var = new_var(I),
+ Bs = erl_eval:add_binding(Var, Value, Bs0),
+ {{var, A, Var}, Bs, I+1}
+ catch
+ _:_ ->
+ {T, Bs0, I}
+ end;
+expr_fixup(Tuple, Bs0, I0) when is_tuple(Tuple) ->
+ {L, Bs, I} = expr_fixup(tuple_to_list(Tuple), Bs0, I0),
+ {list_to_tuple(L), Bs, I};
+expr_fixup([E0|Es0], Bs0, I0) ->
+ {E, Bs1, I1} = expr_fixup(E0, Bs0, I0),
+ {Es, Bs, I} = expr_fixup(Es0, Bs1, I1),
+ {[E|Es], Bs, I};
+expr_fixup(T, Bs, I) ->
+ {T, Bs, I}.
+
+string_fixup(A, S) ->
+ Text = erl_anno:text(A),
+ FixupTag = fixup_tag(Text, S),
+ (fixup_fun(FixupTag))(S).
+
+new_var(I) ->
+ list_to_atom(lists:concat(['__ExtendedParseExprs_', I, '__'])).
+
+reset_token_anno(Tokens) ->
+ [setelement(2, T, (reset_anno())(element(2, T))) || T <- Tokens].
+
+reset_expr_anno(Exprs) ->
+ [erl_parse:map_anno(reset_anno(), E) || E <- Exprs].
+
+reset_anno() ->
+ fun(A) -> erl_anno:new(erl_anno:location(A)) end.
+
+fixup_fun(function) -> fun function/1;
+fixup_fun(pid) -> fun erlang:list_to_pid/1;
+fixup_fun(port) -> fun erlang:list_to_port/1;
+fixup_fun(reference) -> fun erlang:list_to_ref/1.
+
+function(S) ->
+ %% External function.
+ {ok, [_, _, _,
+ {atom, _, Module}, _,
+ {atom, _, Function}, _,
+ {integer, _, Arity}|_], _} = erl_scan:string(S),
+ erlang:make_fun(Module, Function, Arity).
+
+fixup_text(function) -> "function";
+fixup_text(pid) -> "pid";
+fixup_text(port) -> "port";
+fixup_text(reference) -> "reference".
+
+fixup_tag("function", "#"++_) -> function;
+fixup_tag("pid", "<"++_) -> pid;
+fixup_tag("port", "#"++_) -> port;
+fixup_tag("reference", "#"++_) -> reference.
+
+%%% End of extended_parse_exprs.
+
+%% `Tokens' is assumed to have been scanned with the 'text' option.
+%%
+%% Can handle pids, ports, references, and external funs.
+
+-spec extended_parse_term(Tokens) ->
+ {'ok', Term} | {'error', ErrorInfo} when
+ Tokens :: [erl_scan:token()],
+ Term :: term(),
+ ErrorInfo :: erl_parse:error_info().
+
+extended_parse_term(Tokens) ->
+ case extended_parse_exprs(Tokens) of
+ {ok, [Expr], Bindings} ->
+ try normalise(Expr, Bindings) of
+ Term ->
+ {ok, Term}
+ catch
+ _:_ ->
+ Loc = erl_anno:location(element(2, Expr)),
+ {error,{Loc,?MODULE,"bad term"}}
+ end;
+ {ok, [_,Expr|_], _Bindings} ->
+ Loc = erl_anno:location(element(2, Expr)),
+ {error,{Loc,?MODULE,"bad term"}};
+ {error, _} = Error ->
+ Error
+ end.
+
+%% From erl_parse.
+normalise({var, _, V}, Bs) ->
+ {value, Value} = erl_eval:binding(V, Bs),
+ Value;
+normalise({char,_,C}, _Bs) -> C;
+normalise({integer,_,I}, _Bs) -> I;
+normalise({float,_,F}, _Bs) -> F;
+normalise({atom,_,A}, _Bs) -> A;
+normalise({string,_,S}, _Bs) -> S;
+normalise({nil,_}, _Bs) -> [];
+normalise({bin,_,Fs}, Bs) ->
+ {value, B, _} =
+ eval_bits:expr_grp(Fs, [],
+ fun(E, _) ->
+ {value, normalise(E, Bs), []}
+ end, [], true),
+ B;
+normalise({cons,_,Head,Tail}, Bs) ->
+ [normalise(Head, Bs)|normalise(Tail, Bs)];
+normalise({tuple,_,Args}, Bs) ->
+ list_to_tuple(normalise_list(Args, Bs));
+normalise({map,_,Pairs}, Bs) ->
+ maps:from_list(lists:map(fun
+ %% only allow '=>'
+ ({map_field_assoc,_,K,V}) ->
+ {normalise(K, Bs),normalise(V, Bs)}
+ end, Pairs));
+%% Special case for unary +/-.
+normalise({op,_,'+',{char,_,I}}, _Bs) -> I;
+normalise({op,_,'+',{integer,_,I}}, _Bs) -> I;
+normalise({op,_,'+',{float,_,F}}, _Bs) -> F;
+normalise({op,_,'-',{char,_,I}}, _Bs) -> -I; %Weird, but compatible!
+normalise({op,_,'-',{integer,_,I}}, _Bs) -> -I;
+normalise({op,_,'-',{float,_,F}}, _Bs) -> -F;
+normalise({'fun',_,{function,{atom,_,M},{atom,_,F},{integer,_,A}}}, _Bs) ->
+ %% Since "#Fun<M.F.A>" is recognized, "fun M:F/A" should be too.
+ fun M:F/A.
+
+normalise_list([H|T], Bs) ->
+ [normalise(H, Bs)|normalise_list(T, Bs)];
+normalise_list([], _Bs) ->
+ [].
+
+%% To be used on ExprList and Bindings returned from extended_parse_exprs().
+%% Substitute {value, A, Item} for {var, A, ExtendedParseVar}.
+%% {value, A, Item} is a shell/erl_eval convention, and for example
+%% the linter cannot handle it.
+
+-spec subst_values_for_vars(ExprList, Bindings) -> [term()] when
+ ExprList :: [erl_parse:abstract_expr()],
+ Bindings :: erl_eval:binding_struct().
+
+subst_values_for_vars({var, A, V}=Var, Bs) ->
+ case erl_eval:binding(V, Bs) of
+ {value, Value} ->
+ {value, A, Value};
+ unbound ->
+ Var
+ end;
+subst_values_for_vars(L, Bs) when is_list(L) ->
+ [subst_values_for_vars(E, Bs) || E <- L];
+subst_values_for_vars(T, Bs) when is_tuple(T) ->
+ list_to_tuple(subst_values_for_vars(tuple_to_list(T), Bs));
+subst_values_for_vars(T, _Bs) ->
+ T.
+
%%% Formatting of exceptions, mfa:s and funs.
%% -> iolist() (no \n at end)
diff --git a/lib/stdlib/src/otp_internal.erl b/lib/stdlib/src/otp_internal.erl
index d89ff4a624..42094e3088 100644
--- a/lib/stdlib/src/otp_internal.erl
+++ b/lib/stdlib/src/otp_internal.erl
@@ -55,6 +55,55 @@ obsolete_1(erlang, now, 0) ->
obsolete_1(calendar, local_time_to_universal_time, 1) ->
{deprecated, {calendar, local_time_to_universal_time_dst, 1}};
+%% *** STDLIB added in OTP 20 ***
+
+obsolete_1(gen_fsm, start, 3) ->
+ {deprecated, {gen_statem, start, 3}};
+obsolete_1(gen_fsm, start, 4) ->
+ {deprecated, {gen_statem, start, 4}};
+
+obsolete_1(gen_fsm, start_link, 3) ->
+ {deprecated, {gen_statem, start, 3}};
+obsolete_1(gen_fsm, start_link, 4) ->
+ {deprecated, {gen_statem, start, 4}};
+
+obsolete_1(gen_fsm, stop, 1) ->
+ {deprecated, {gen_statem, stop, 1}};
+obsolete_1(gen_fsm, stop, 3) ->
+ {deprecated, {gen_statem, stop, 3}};
+
+obsolete_1(gen_fsm, enter_loop, 4) ->
+ {deprecated, {gen_statem, enter_loop, 4}};
+obsolete_1(gen_fsm, enter_loop, 5) ->
+ {deprecated, {gen_statem, enter_loop, 5}};
+obsolete_1(gen_fsm, enter_loop, 6) ->
+ {deprecated, {gen_statem, enter_loop, 6}};
+
+obsolete_1(gen_fsm, reply, 2) ->
+ {deprecated, {gen_statem, reply, 2}};
+
+obsolete_1(gen_fsm, send_event, 2) ->
+ {deprecated, {gen_statem, cast, 1}};
+obsolete_1(gen_fsm, send_all_state_event, 2) ->
+ {deprecated, {gen_statem, cast, 1}};
+
+obsolete_1(gen_fsm, sync_send_event, 2) ->
+ {deprecated, {gen_statem, call, 2}};
+obsolete_1(gen_fsm, sync_send_event, 3) ->
+ {deprecated, {gen_statem, call, 3}};
+
+obsolete_1(gen_fsm, sync_send_all_state_event, 2) ->
+ {deprecated, {gen_statem, call, 2}};
+obsolete_1(gen_fsm, sync_send_all_state_event, 3) ->
+ {deprecated, {gen_statem, call, 3}};
+
+obsolete_1(gen_fsm, start_timer, 2) ->
+ {deprecated, {erlang, start_timer, 2}};
+obsolete_1(gen_fsm, cancel_timer, 1) ->
+ {deprecated, {erlang, cancel_timer, 1}};
+obsolete_1(gen_fsm, send_event_after, 2) ->
+ {deprecated, {erlang, send_after, 2}};
+
%% *** CRYPTO added in OTP 20 ***
obsolete_1(crypto, rand_uniform, 2) ->
diff --git a/lib/stdlib/src/qlc.erl b/lib/stdlib/src/qlc.erl
index 8c4d835432..20aaa2638c 100644
--- a/lib/stdlib/src/qlc.erl
+++ b/lib/stdlib/src/qlc.erl
@@ -635,14 +635,25 @@ string_to_handle(Str, Options, Bindings) when is_list(Str) ->
badarg ->
erlang:error(badarg, [Str, Options, Bindings]);
[Unique, Cache, MaxLookup, Join, Lookup] ->
- case erl_scan:string(Str) of
+ case erl_scan:string(Str, 1, [text]) of
{ok, Tokens, _} ->
- case erl_parse:parse_exprs(Tokens) of
- {ok, [Expr]} ->
- case qlc_pt:transform_expression(Expr, Bindings) of
+ ScanRes =
+ case lib:extended_parse_exprs(Tokens) of
+ {ok, [Expr0], SBs} ->
+ {ok, Expr0, SBs};
+ {ok, _ExprList, _SBs} ->
+ erlang:error(badarg,
+ [Str, Options, Bindings]);
+ E ->
+ E
+ end,
+ case ScanRes of
+ {ok, Expr, XBs} ->
+ Bs1 = merge_binding_structs(Bindings, XBs),
+ case qlc_pt:transform_expression(Expr, Bs1) of
{ok, {call, _, _QlcQ, Handle}} ->
{value, QLC_lc, _} =
- erl_eval:exprs(Handle, Bindings),
+ erl_eval:exprs(Handle, Bs1),
O = #qlc_opt{unique = Unique,
cache = Cache,
max_lookup = MaxLookup,
@@ -652,8 +663,6 @@ string_to_handle(Str, Options, Bindings) when is_list(Str) ->
{not_ok, [{error, Error} | _]} ->
error(Error)
end;
- {ok, _ExprList} ->
- erlang:error(badarg, [Str, Options, Bindings]);
{error, ErrorInfo} ->
error(ErrorInfo)
end;
@@ -770,6 +779,10 @@ all_selections([{I,Cs} | ICs]) ->
%%% Local functions
%%%
+merge_binding_structs(Bs1, Bs2) ->
+ lists:foldl(fun({N, V}, Bs) -> erl_eval:add_binding(N, V, Bs)
+ end, Bs1, erl_eval:bindings(Bs2)).
+
aux_name1(Name, N, AllNames) ->
SN = name_suffix(Name, N),
case sets:is_element(SN, AllNames) of
@@ -1180,9 +1193,12 @@ abstract1({table, {M, F, As0}}, _NElements, _Depth, Anno)
abstract1({table, TableDesc}, _NElements, _Depth, _A) ->
case io_lib:deep_char_list(TableDesc) of
true ->
- {ok, Tokens, _} = erl_scan:string(lists:flatten(TableDesc++".")),
- {ok, [Expr]} = erl_parse:parse_exprs(Tokens),
- Expr;
+ {ok, Tokens, _} =
+ erl_scan:string(lists:flatten(TableDesc++"."), 1, [text]),
+ {ok, Es, Bs} =
+ lib:extended_parse_exprs(Tokens),
+ [Expr] = lib:subst_values_for_vars(Es, Bs),
+ special(Expr);
false -> % abstract expression
TableDesc
end;
@@ -1210,6 +1226,15 @@ abstract1({list, L}, NElements, Depth, _A) when NElements =:= infinity;
abstract1({list, L}, NElements, Depth, _A) ->
abstract_term(depth(lists:sublist(L, NElements), Depth) ++ '...', 1).
+special({value, _, Thing}) ->
+ abstract_term(Thing);
+special(Tuple) when is_tuple(Tuple) ->
+ list_to_tuple(special(tuple_to_list(Tuple)));
+special([E|Es]) ->
+ [special(E)|special(Es)];
+special(Expr) ->
+ Expr.
+
depth(List, infinity) ->
List;
depth(List, Depth) ->
diff --git a/lib/stdlib/src/rand.erl b/lib/stdlib/src/rand.erl
index dfd102f9ef..7a8a5e6d4a 100644
--- a/lib/stdlib/src/rand.erl
+++ b/lib/stdlib/src/rand.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2015-2016. All Rights Reserved.
+%% Copyright Ericsson AB 2015-2017. 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.
@@ -20,6 +20,9 @@
%% =====================================================================
%% Multiple PRNG module for Erlang/OTP
%% Copyright (c) 2015-2016 Kenji Rikitake
+%%
+%% exrop (xoroshiro116+) added and statistical distribution
+%% improvements by the Erlang/OTP team 2017
%% =====================================================================
-module(rand).
@@ -28,48 +31,179 @@
export_seed/0, export_seed_s/1,
uniform/0, uniform/1, uniform_s/1, uniform_s/2,
jump/0, jump/1,
- normal/0, normal_s/1
+ normal/0, normal/2, normal_s/1, normal_s/3
]).
-compile({inline, [exs64_next/1, exsplus_next/1,
- exsplus_jump/1,
exs1024_next/1, exs1024_calc/2,
- exs1024_jump/1,
+ exrop_next/1, exrop_next_s/2,
get_52/1, normal_kiwi/1]}).
--define(DEFAULT_ALG_HANDLER, exsplus).
+-define(DEFAULT_ALG_HANDLER, exrop).
-define(SEED_DICT, rand_seed).
%% =====================================================================
+%% Bit fiddling macros
+%% =====================================================================
+
+-define(BIT(Bits), (1 bsl (Bits))).
+-define(MASK(Bits), (?BIT(Bits) - 1)).
+-define(MASK(Bits, X), ((X) band ?MASK(Bits))).
+-define(
+ BSL(Bits, X, N),
+ %% N is evaluated 2 times
+ (?MASK((Bits)-(N), (X)) bsl (N))).
+-define(
+ ROTL(Bits, X, N),
+ %% Bits is evaluated 2 times
+ %% X is evaluated 2 times
+ %% N i evaluated 3 times
+ (?BSL((Bits), (X), (N)) bor ((X) bsr ((Bits)-(N))))).
+
+%%-define(TWO_POW_MINUS53, (math:pow(2, -53))).
+-define(TWO_POW_MINUS53, 1.11022302462515657e-16).
+
+%% =====================================================================
%% Types
%% =====================================================================
+-type uint64() :: 0..?MASK(64).
+-type uint58() :: 0..?MASK(58).
+
%% This depends on the algorithm handler function
-type alg_state() ::
- exs64_state() | exsplus_state() | exs1024_state() | term().
+ exs64_state() | exsplus_state() | exs1024_state() |
+ exrop_state() | term().
-%% This is the algorithm handler function within this module
+%% This is the algorithm handling definition within this module,
+%% and the type to use for plugins.
+%%
+%% The 'type' field must be recognized by the module that implements
+%% the algorithm, to interpret an exported state.
+%%
+%% The 'bits' field indicates how many bits the integer
+%% returned from 'next' has got, i.e 'next' shall return
+%% an random integer in the range 0..(2^Bits - 1).
+%% At least 53 bits is required for the floating point
+%% producing fallbacks. This field is only used when
+%% the 'uniform' or 'uniform_n' fields are not defined.
+%%
+%% The fields 'next', 'uniform' and 'uniform_n'
+%% implement the algorithm. If 'uniform' or 'uinform_n'
+%% is not present there is a fallback using 'next' and either
+%% 'bits' or the deprecated 'max'.
+%%
-type alg_handler() ::
#{type := alg(),
- max := integer() | infinity,
+ bits => non_neg_integer(),
+ weak_low_bits => non_neg_integer(),
+ max => non_neg_integer(), % Deprecated
next :=
- fun((alg_state()) -> {non_neg_integer(), alg_state()}),
- uniform :=
- fun((state()) -> {float(), state()}),
- uniform_n :=
- fun((pos_integer(), state()) -> {pos_integer(), state()}),
- jump :=
- fun((state()) -> state())}.
+ fun ((alg_state()) -> {non_neg_integer(), alg_state()}),
+ uniform =>
+ fun ((state()) -> {float(), state()}),
+ uniform_n =>
+ fun ((pos_integer(), state()) -> {pos_integer(), state()}),
+ jump =>
+ fun ((state()) -> state())}.
%% Algorithm state
-type state() :: {alg_handler(), alg_state()}.
--type builtin_alg() :: exs64 | exsplus | exs1024.
+-type builtin_alg() :: exs64 | exsplus | exsp | exs1024 | exs1024s | exrop.
-type alg() :: builtin_alg() | atom().
-type export_state() :: {alg(), alg_state()}.
-export_type(
[builtin_alg/0, alg/0, alg_handler/0, alg_state/0,
state/0, export_state/0]).
--export_type([exs64_state/0, exsplus_state/0, exs1024_state/0]).
+-export_type(
+ [exs64_state/0, exsplus_state/0, exs1024_state/0, exrop_state/0]).
+
+%% =====================================================================
+%% Range macro and helper
+%% =====================================================================
+
+-define(
+ uniform_range(Range, Alg, R, V, MaxMinusRange, I),
+ if
+ 0 =< (MaxMinusRange) ->
+ if
+ %% Really work saving in odd cases;
+ %% large ranges in particular
+ (V) < (Range) ->
+ {(V) + 1, {(Alg), (R)}};
+ true ->
+ (I) = (V) rem (Range),
+ if
+ (V) - (I) =< (MaxMinusRange) ->
+ {(I) + 1, {(Alg), (R)}};
+ true ->
+ %% V in the truncated top range
+ %% - try again
+ ?FUNCTION_NAME((Range), {(Alg), (R)})
+ end
+ end;
+ true ->
+ uniform_range((Range), (Alg), (R), (V))
+ end).
+
+%% For ranges larger than the algorithm bit size
+uniform_range(Range, #{next:=Next, bits:=Bits} = Alg, R, V) ->
+ WeakLowBits =
+ case Alg of
+ #{weak_low_bits:=WLB} -> WLB;
+ #{} -> 0
+ end,
+ %% Maybe waste the lowest bit(s) when shifting in new bits
+ Shift = Bits - WeakLowBits,
+ ShiftMask = bnot ?MASK(WeakLowBits),
+ RangeMinus1 = Range - 1,
+ if
+ (Range band RangeMinus1) =:= 0 -> % Power of 2
+ %% Generate at least the number of bits for the range
+ {V1, R1, _} =
+ uniform_range(
+ Range bsr Bits, Next, R, V, ShiftMask, Shift, Bits),
+ {(V1 band RangeMinus1) + 1, {Alg, R1}};
+ true ->
+ %% Generate a value with at least two bits more than the range
+ %% and try that for a fit, otherwise recurse
+ %%
+ %% Just one bit more should ensure that the generated
+ %% number range is at least twice the size of the requested
+ %% range, which would make the probability to draw a good
+ %% number better than 0.5. And repeating that until
+ %% success i guess would take 2 times statistically amortized.
+ %% But since the probability for fairly many attemtpts
+ %% is not that low, use two bits more than the range which
+ %% should make the probability to draw a bad number under 0.25,
+ %% which decreases the bad case probability a lot.
+ {V1, R1, B} =
+ uniform_range(
+ Range bsr (Bits - 2), Next, R, V, ShiftMask, Shift, Bits),
+ I = V1 rem Range,
+ if
+ (V1 - I) =< (1 bsl B) - Range ->
+ {I + 1, {Alg, R1}};
+ true ->
+ %% V1 drawn from the truncated top range
+ %% - try again
+ {V2, R2} = Next(R1),
+ uniform_range(Range, Alg, R2, V2)
+ end
+ end.
+%%
+uniform_range(Range, Next, R, V, ShiftMask, Shift, B) ->
+ if
+ Range =< 1 ->
+ {V, R, B};
+ true ->
+ {V1, R1} = Next(R),
+ %% Waste the lowest bit(s) when shifting in new bits
+ uniform_range(
+ Range bsr Shift, Next, R1,
+ ((V band ShiftMask) bsl Shift) bor V1,
+ ShiftMask, Shift, B + Shift)
+ end.
%% =====================================================================
%% API
@@ -131,7 +265,7 @@ seed_s(Alg0, S0 = {_, _, _}) ->
%%% uniform/0, uniform/1, uniform_s/1, uniform_s/2 are all
%%% uniformly distributed random numbers.
-%% uniform/0: returns a random float X where 0.0 < X < 1.0,
+%% uniform/0: returns a random float X where 0.0 =< X < 1.0,
%% updating the state in the process dictionary.
-spec uniform() -> X :: float().
@@ -151,12 +285,21 @@ uniform(N) ->
X.
%% uniform_s/1: given a state, uniform_s/1
-%% returns a random float X where 0.0 < X < 1.0,
+%% returns a random float X where 0.0 =< X < 1.0,
%% and a new state.
-spec uniform_s(State :: state()) -> {X :: float(), NewState :: state()}.
uniform_s(State = {#{uniform:=Uniform}, _}) ->
- Uniform(State).
+ Uniform(State);
+uniform_s({#{bits:=Bits, next:=Next} = Alg, R0}) ->
+ {V, R1} = Next(R0),
+ %% Produce floats on the form N * 2^(-53)
+ {(V bsr (Bits - 53)) * ?TWO_POW_MINUS53, {Alg, R1}};
+uniform_s({#{max:=Max, next:=Next} = Alg, R0}) ->
+ {V, R1} = Next(R0),
+ %% Old broken algorithm with non-uniform density
+ {V / (Max + 1), {Alg, R1}}.
+
%% uniform_s/2: given an integer N >= 1 and a state, uniform_s/2
%% uniform_s/2 returns a random integer X where 1 =< X =< N,
@@ -164,13 +307,26 @@ uniform_s(State = {#{uniform:=Uniform}, _}) ->
-spec uniform_s(N :: pos_integer(), State :: state()) ->
{X :: pos_integer(), NewState :: state()}.
-uniform_s(N, State = {#{uniform_n:=Uniform, max:=Max}, _})
- when 0 < N, N =< Max ->
- Uniform(N, State);
-uniform_s(N, State0 = {#{uniform:=Uniform}, _})
- when is_integer(N), 0 < N ->
- {F, State} = Uniform(State0),
- {trunc(F * N) + 1, State}.
+uniform_s(N, State = {#{uniform_n:=UniformN}, _})
+ when is_integer(N), 1 =< N ->
+ UniformN(N, State);
+uniform_s(N, {#{bits:=Bits, next:=Next} = Alg, R0})
+ when is_integer(N), 1 =< N ->
+ {V, R1} = Next(R0),
+ MaxMinusN = ?BIT(Bits) - N,
+ ?uniform_range(N, Alg, R1, V, MaxMinusN, I);
+uniform_s(N, {#{max:=Max, next:=Next} = Alg, R0})
+ when is_integer(N), 1 =< N ->
+ %% Old broken algorithm with skewed probability
+ %% and gap in ranges > Max
+ {V, R1} = Next(R0),
+ if
+ N =< Max ->
+ {(V rem N) + 1, {Alg, R1}};
+ true ->
+ F = V / (Max + 1),
+ {trunc(F * N) + 1, {Alg, R1}}
+ end.
%% jump/1: given a state, jump/1
%% returns a new state which is equivalent to that
@@ -179,7 +335,10 @@ uniform_s(N, State0 = {#{uniform:=Uniform}, _})
-spec jump(state()) -> NewState :: state().
jump(State = {#{jump:=Jump}, _}) ->
- Jump(State).
+ Jump(State);
+jump({#{}, _}) ->
+ erlang:error(not_implemented).
+
%% jump/0: read the internal state and
%% apply the jump function for the state as in jump/1
@@ -187,7 +346,6 @@ jump(State = {#{jump:=Jump}, _}) ->
%% then returns the new value.
-spec jump() -> NewState :: state().
-
jump() ->
seed_put(jump(seed_get())).
@@ -200,6 +358,13 @@ normal() ->
_ = seed_put(Seed),
X.
+%% normal/2: returns a random float with N(μ, σ²) normal distribution
+%% updating the state in the process dictionary.
+
+-spec normal(Mean :: number(), Variance :: number()) -> float().
+normal(Mean, Variance) ->
+ Mean + (math:sqrt(Variance) * normal()).
+
%% normal_s/1: returns a random float with standard normal distribution
%% The Ziggurat Method for generating random variables - Marsaglia and Tsang
%% Paper and reference code: http://www.jstatsoft.org/v05/i08/
@@ -207,7 +372,7 @@ normal() ->
-spec normal_s(State :: state()) -> {float(), NewState :: state()}.
normal_s(State0) ->
{Sign, R, State} = get_52(State0),
- Idx = R band 16#FF,
+ Idx = ?MASK(8, R),
Idx1 = Idx+1,
{Ki, Wi} = normal_kiwi(Idx1),
X = R * Wi,
@@ -220,18 +385,15 @@ normal_s(State0) ->
false -> normal_s(Idx, Sign, -X, State)
end.
-%% =====================================================================
-%% Internal functions
+%% normal_s/3: returns a random float with normal N(μ, σ²) distribution
--define(UINT21MASK, 16#00000000001fffff).
--define(UINT32MASK, 16#00000000ffffffff).
--define(UINT33MASK, 16#00000001ffffffff).
--define(UINT39MASK, 16#0000007fffffffff).
--define(UINT58MASK, 16#03ffffffffffffff).
--define(UINT64MASK, 16#ffffffffffffffff).
+-spec normal_s(Mean :: number(), Variance :: number(), state()) -> {float(), NewS :: state()}.
+normal_s(Mean, Variance, State0) when Variance > 0 ->
+ {X, State} = normal_s(State0),
+ {Mean + (math:sqrt(Variance) * X), State}.
--type uint64() :: 0..16#ffffffffffffffff.
--type uint58() :: 0..16#03ffffffffffffff.
+%% =====================================================================
+%% Internal functions
-spec seed_put(state()) -> state().
seed_put(Seed) ->
@@ -246,20 +408,30 @@ seed_get() ->
%% Setup alg record
mk_alg(exs64) ->
- {#{type=>exs64, max=>?UINT64MASK, next=>fun exs64_next/1,
- uniform=>fun exs64_uniform/1, uniform_n=>fun exs64_uniform/2,
- jump=>fun exs64_jump/1},
+ {#{type=>exs64, max=>?MASK(64), next=>fun exs64_next/1},
fun exs64_seed/1};
mk_alg(exsplus) ->
- {#{type=>exsplus, max=>?UINT58MASK, next=>fun exsplus_next/1,
- uniform=>fun exsplus_uniform/1, uniform_n=>fun exsplus_uniform/2,
+ {#{type=>exsplus, max=>?MASK(58), next=>fun exsplus_next/1,
+ jump=>fun exsplus_jump/1},
+ fun exsplus_seed/1};
+mk_alg(exsp) ->
+ {#{type=>exsp, bits=>58, weak_low_bits=>1, next=>fun exsplus_next/1,
+ uniform=>fun exsp_uniform/1, uniform_n=>fun exsp_uniform/2,
jump=>fun exsplus_jump/1},
fun exsplus_seed/1};
mk_alg(exs1024) ->
- {#{type=>exs1024, max=>?UINT64MASK, next=>fun exs1024_next/1,
- uniform=>fun exs1024_uniform/1, uniform_n=>fun exs1024_uniform/2,
+ {#{type=>exs1024, max=>?MASK(64), next=>fun exs1024_next/1,
jump=>fun exs1024_jump/1},
- fun exs1024_seed/1}.
+ fun exs1024_seed/1};
+mk_alg(exs1024s) ->
+ {#{type=>exs1024s, bits=>64, weak_low_bits=>3, next=>fun exs1024_next/1,
+ jump=>fun exs1024_jump/1},
+ fun exs1024_seed/1};
+mk_alg(exrop) ->
+ {#{type=>exrop, bits=>58, weak_low_bits=>1, next=>fun exrop_next/1,
+ uniform=>fun exrop_uniform/1, uniform_n=>fun exrop_uniform/2,
+ jump=>fun exrop_jump/1},
+ fun exrop_seed/1}.
%% =====================================================================
%% exs64 PRNG: Xorshift64*
@@ -270,29 +442,18 @@ mk_alg(exs1024) ->
-opaque exs64_state() :: uint64().
exs64_seed({A1, A2, A3}) ->
- {V1, _} = exs64_next(((A1 band ?UINT32MASK) * 4294967197 + 1)),
- {V2, _} = exs64_next(((A2 band ?UINT32MASK) * 4294967231 + 1)),
- {V3, _} = exs64_next(((A3 band ?UINT32MASK) * 4294967279 + 1)),
- ((V1 * V2 * V3) rem (?UINT64MASK - 1)) + 1.
+ {V1, _} = exs64_next((?MASK(32, A1) * 4294967197 + 1)),
+ {V2, _} = exs64_next((?MASK(32, A2) * 4294967231 + 1)),
+ {V3, _} = exs64_next((?MASK(32, A3) * 4294967279 + 1)),
+ ((V1 * V2 * V3) rem (?MASK(64) - 1)) + 1.
%% Advance xorshift64* state for one step and generate 64bit unsigned integer
-spec exs64_next(exs64_state()) -> {uint64(), exs64_state()}.
exs64_next(R) ->
R1 = R bxor (R bsr 12),
- R2 = R1 bxor ((R1 band ?UINT39MASK) bsl 25),
+ R2 = R1 bxor ?BSL(64, R1, 25),
R3 = R2 bxor (R2 bsr 27),
- {(R3 * 2685821657736338717) band ?UINT64MASK, R3}.
-
-exs64_uniform({Alg, R0}) ->
- {V, R1} = exs64_next(R0),
- {V / 18446744073709551616, {Alg, R1}}.
-
-exs64_uniform(Max, {Alg, R}) ->
- {V, R1} = exs64_next(R),
- {(V rem Max) + 1, {Alg, R1}}.
-
-exs64_jump(_) ->
- erlang:error(not_implemented).
+ {?MASK(64, R3 * 2685821657736338717), R3}.
%% =====================================================================
%% exsplus PRNG: Xorshift116+
@@ -307,10 +468,12 @@ exs64_jump(_) ->
-dialyzer({no_improper_lists, exsplus_seed/1}).
exsplus_seed({A1, A2, A3}) ->
- {_, R1} = exsplus_next([(((A1 * 4294967197) + 1) band ?UINT58MASK)|
- (((A2 * 4294967231) + 1) band ?UINT58MASK)]),
- {_, R2} = exsplus_next([(((A3 * 4294967279) + 1) band ?UINT58MASK)|
- tl(R1)]),
+ {_, R1} = exsplus_next(
+ [?MASK(58, (A1 * 4294967197) + 1)|
+ ?MASK(58, (A2 * 4294967231) + 1)]),
+ {_, R2} = exsplus_next(
+ [?MASK(58, (A3 * 4294967279) + 1)|
+ tl(R1)]),
R2.
-dialyzer({no_improper_lists, exsplus_next/1}).
@@ -319,17 +482,22 @@ exsplus_seed({A1, A2, A3}) ->
-spec exsplus_next(exsplus_state()) -> {uint58(), exsplus_state()}.
exsplus_next([S1|S0]) ->
%% Note: members s0 and s1 are swapped here
- S11 = (S1 bxor (S1 bsl 24)) band ?UINT58MASK,
+ S11 = S1 bxor ?BSL(58, S1, 24),
S12 = S11 bxor S0 bxor (S11 bsr 11) bxor (S0 bsr 41),
- {(S0 + S12) band ?UINT58MASK, [S0|S12]}.
+ {?MASK(58, S0 + S12), [S0|S12]}.
+
-exsplus_uniform({Alg, R0}) ->
+exsp_uniform({Alg, R0}) ->
{I, R1} = exsplus_next(R0),
- {I / (?UINT58MASK+1), {Alg, R1}}.
+ %% Waste the lowest bit since it is of lower
+ %% randomness quality than the others
+ {(I bsr (58-53)) * ?TWO_POW_MINUS53, {Alg, R1}}.
-exsplus_uniform(Max, {Alg, R}) ->
+exsp_uniform(Range, {Alg, R}) ->
{V, R1} = exsplus_next(R),
- {(V rem Max) + 1, {Alg, R1}}.
+ MaxMinusRange = ?BIT(58) - Range,
+ ?uniform_range(Range, Alg, R1, V, MaxMinusRange, I).
+
%% This is the jump function for the exsplus generator, equivalent
%% to 2^64 calls to next/1; it can be used to generate 2^52
@@ -357,7 +525,7 @@ exsplus_jump(S, AS, _, 0) ->
{S, AS};
exsplus_jump(S, [AS0|AS1], J, N) ->
{_, NS} = exsplus_next(S),
- case (J band 1) of
+ case ?MASK(1, J) of
1 ->
[S0|S1] = S,
exsplus_jump(NS, [(AS0 bxor S0)|(AS1 bxor S1)], J bsr 1, N-1);
@@ -374,9 +542,9 @@ exsplus_jump(S, [AS0|AS1], J, N) ->
-opaque exs1024_state() :: {list(uint64()), list(uint64())}.
exs1024_seed({A1, A2, A3}) ->
- B1 = (((A1 band ?UINT21MASK) + 1) * 2097131) band ?UINT21MASK,
- B2 = (((A2 band ?UINT21MASK) + 1) * 2097133) band ?UINT21MASK,
- B3 = (((A3 band ?UINT21MASK) + 1) * 2097143) band ?UINT21MASK,
+ B1 = ?MASK(21, (?MASK(21, A1) + 1) * 2097131),
+ B2 = ?MASK(21, (?MASK(21, A2) + 1) * 2097133),
+ B3 = ?MASK(21, (?MASK(21, A3) + 1) * 2097143),
{exs1024_gen1024((B1 bsl 43) bor (B2 bsl 22) bor (B3 bsl 1) bor 1),
[]}.
@@ -399,11 +567,11 @@ exs1024_gen1024(N, R, L) ->
%% X: random number output
-spec exs1024_calc(uint64(), uint64()) -> {uint64(), uint64()}.
exs1024_calc(S0, S1) ->
- S11 = S1 bxor ((S1 band ?UINT33MASK) bsl 31),
+ S11 = S1 bxor ?BSL(64, S1, 31),
S12 = S11 bxor (S11 bsr 11),
S01 = S0 bxor (S0 bsr 30),
NS1 = S01 bxor S12,
- {(NS1 * 1181783497276652981) band ?UINT64MASK, NS1}.
+ {?MASK(64, NS1 * 1181783497276652981), NS1}.
%% Advance xorshift1024* state for one step and generate 64bit unsigned integer
-spec exs1024_next(exs1024_state()) -> {uint64(), exs1024_state()}.
@@ -414,13 +582,6 @@ exs1024_next({[H], RL}) ->
NL = [H|lists:reverse(RL)],
exs1024_next({NL, []}).
-exs1024_uniform({Alg, R0}) ->
- {V, R1} = exs1024_next(R0),
- {V / 18446744073709551616, {Alg, R1}}.
-
-exs1024_uniform(Max, {Alg, R}) ->
- {V, R1} = exs1024_next(R),
- {(V rem Max) + 1, {Alg, R1}}.
%% This is the jump function for the exs1024 generator, equivalent
%% to 2^512 calls to next(); it can be used to generate 2^512
@@ -467,7 +628,7 @@ exs1024_jump(S, AS, [H|T], _, 0, TN) ->
exs1024_jump(S, AS, T, H, ?JUMPELEMLEN, TN);
exs1024_jump({L, RL}, AS, JL, J, N, TN) ->
{_, NS} = exs1024_next({L, RL}),
- case (J band 1) of
+ case ?MASK(1, J) of
1 ->
AS2 = lists:zipwith(fun(X, Y) -> X bxor Y end,
AS, L ++ lists:reverse(RL)),
@@ -477,15 +638,149 @@ exs1024_jump({L, RL}, AS, JL, J, N, TN) ->
end.
%% =====================================================================
+%% exrop PRNG: Xoroshiro116+
+%%
+%% Reference URL: http://xorshift.di.unimi.it/
+%%
+%% 58 bits fits into an immediate on 64bits Erlang and is thus much faster.
+%% In fact, an immediate number is 60 bits signed in Erlang so you can
+%% add two positive 58 bit numbers and get a 59 bit number that still is
+%% a positive immediate, which is a property we utilize here...
+%%
+%% Modification of the original Xororhiro128+ algorithm to 116 bits
+%% by Sebastiano Vigna. A lot of thanks for his help and work.
+%% =====================================================================
+%% (a, b, c) = (24, 2, 35)
+%% JUMP Polynomial = 0x9863200f83fcd4a11293241fcb12a (116 bit)
+%%
+%% From http://xoroshiro.di.unimi.it/xoroshiro116plus.c:
+%% ---------------------------------------------------------------------
+%% /* Written in 2017 by Sebastiano Vigna ([email protected]).
+%%
+%% To the extent possible under law, the author has dedicated all copyright
+%% and related and neighboring rights to this software to the public domain
+%% worldwide. This software is distributed without any warranty.
+%%
+%% See <http://creativecommons.org/publicdomain/zero/1.0/>. */
+%%
+%% #include <stdint.h>
+%%
+%% #define UINT58MASK (uint64_t)((UINT64_C(1) << 58) - 1)
+%%
+%% uint64_t s[2];
+%%
+%% static inline uint64_t rotl58(const uint64_t x, int k) {
+%% return (x << k) & UINT58MASK | (x >> (58 - k));
+%% }
+%%
+%% uint64_t next(void) {
+%% uint64_t s1 = s[1];
+%% const uint64_t s0 = s[0];
+%% const uint64_t result = (s0 + s1) & UINT58MASK;
+%%
+%% s1 ^= s0;
+%% s[0] = rotl58(s0, 24) ^ s1 ^ ((s1 << 2) & UINT58MASK); // a, b
+%% s[1] = rotl58(s1, 35); // c
+%% return result;
+%% }
+%%
+%% void jump(void) {
+%% static const uint64_t JUMP[] =
+%% { 0x4a11293241fcb12a, 0x0009863200f83fcd };
+%%
+%% uint64_t s0 = 0;
+%% uint64_t s1 = 0;
+%% for(int i = 0; i < sizeof JUMP / sizeof *JUMP; i++)
+%% for(int b = 0; b < 64; b++) {
+%% if (JUMP[i] & UINT64_C(1) << b) {
+%% s0 ^= s[0];
+%% s1 ^= s[1];
+%% }
+%% next();
+%% }
+%% s[0] = s0;
+%% s[1] = s1;
+%% }
+
+-opaque exrop_state() :: nonempty_improper_list(uint58(), uint58()).
+
+-dialyzer({no_improper_lists, exrop_seed/1}).
+exrop_seed({A1, A2, A3}) ->
+ [_|S1] =
+ exrop_next_s(
+ ?MASK(58, (A1 * 4294967197) + 1),
+ ?MASK(58, (A2 * 4294967231) + 1)),
+ exrop_next_s(?MASK(58, (A3 * 4294967279) + 1), S1).
+
+-dialyzer({no_improper_lists, exrop_next_s/2}).
+%% Advance xoroshiro116+ state one step
+%% [a, b, c] = [24, 2, 35]
+-define(
+ exrop_next_s(S0, S1, S1_a),
+ begin
+ S1_a = S1 bxor S0,
+ [?ROTL(58, S0, 24) bxor S1_a bxor ?BSL(58, S1_a, 2)| % a, b
+ ?ROTL(58, S1_a, 35)] % c
+ end).
+exrop_next_s(S0, S1) ->
+ ?exrop_next_s(S0, S1, S1_a).
+
+-dialyzer({no_improper_lists, exrop_next/1}).
+%% Advance xoroshiro116+ state one step, generate 58 bit unsigned integer,
+%% and waste the lowest bit since it is of lower randomness quality
+exrop_next([S0|S1]) ->
+ {?MASK(58, S0 + S1), ?exrop_next_s(S0, S1, S1_a)}.
+
+exrop_uniform({Alg, R}) ->
+ {V, R1} = exrop_next(R),
+ %% Waste the lowest bit since it is of lower
+ %% randomness quality than the others
+ {(V bsr (58-53)) * ?TWO_POW_MINUS53, {Alg, R1}}.
+
+exrop_uniform(Range, {Alg, R}) ->
+ {V, R1} = exrop_next(R),
+ MaxMinusRange = ?BIT(58) - Range,
+ ?uniform_range(Range, Alg, R1, V, MaxMinusRange, I).
+
+%% Split a 116 bit constant into two 58 bit words,
+%% a top '1' marks the end of the low word.
+-define(
+ JUMP_116(Jump),
+ [?BIT(58) bor ?MASK(58, (Jump)),(Jump) bsr 58]).
+%%
+exrop_jump({Alg,S}) ->
+ [J|Js] = ?JUMP_116(16#9863200f83fcd4a11293241fcb12a),
+ {Alg, exrop_jump(S, 0, 0, J, Js)}.
+%%
+-dialyzer({no_improper_lists, exrop_jump/5}).
+exrop_jump(_S, S0, S1, 0, []) -> % End of jump constant
+ [S0|S1];
+exrop_jump(S, S0, S1, 1, [J|Js]) -> % End of word
+ exrop_jump(S, S0, S1, J, Js);
+exrop_jump([S__0|S__1] = _S, S0, S1, J, Js) ->
+ case ?MASK(1, J) of
+ 1 ->
+ NewS = exrop_next_s(S__0, S__1),
+ exrop_jump(NewS, S0 bxor S__0, S1 bxor S__1, J bsr 1, Js);
+ 0 ->
+ NewS = exrop_next_s(S__0, S__1),
+ exrop_jump(NewS, S0, S1, J bsr 1, Js)
+ end.
+
+%% =====================================================================
%% Ziggurat cont
%% =====================================================================
-define(NOR_R, 3.6541528853610087963519472518).
-define(NOR_INV_R, 1/?NOR_R).
%% return a {sign, Random51bits, State}
+get_52({Alg=#{bits:=Bits, next:=Next}, S0}) ->
+ %% Use the high bits
+ {Int,S1} = Next(S0),
+ {?BIT(Bits - 51 - 1) band Int, Int bsr (Bits - 51), {Alg, S1}};
get_52({Alg=#{next:=Next}, S0}) ->
{Int,S1} = Next(S0),
- {((1 bsl 51) band Int), Int band ((1 bsl 51)-1), {Alg, S1}}.
+ {?BIT(51) band Int, ?MASK(51, Int), {Alg, S1}}.
%% Slow path
normal_s(0, Sign, X0, State0) ->
diff --git a/lib/stdlib/src/shell.erl b/lib/stdlib/src/shell.erl
index 394f4f2fa4..76a2789406 100644
--- a/lib/stdlib/src/shell.erl
+++ b/lib/stdlib/src/shell.erl
@@ -229,8 +229,9 @@ server_loop(N0, Eval_0, Bs00, RT, Ds00, History0, Results0) ->
{Eval_1,Bs0,Ds0,Prompt} = prompt(N, Eval_0, Bs00, RT, Ds00),
{Res,Eval0} = get_command(Prompt, Eval_1, Bs0, RT, Ds0),
case Res of
- {ok,Es0} ->
- case expand_hist(Es0, N) of
+ {ok,Es0,XBs} ->
+ Es1 = lib:subst_values_for_vars(Es0, XBs),
+ case expand_hist(Es1, N) of
{ok,Es} ->
{V,Eval,Bs,Ds} = shell_cmd(Es, Eval0, Bs0, RT, Ds0, cmd),
{History,Results} = check_and_get_history_and_results(),
@@ -276,10 +277,10 @@ get_command(Prompt, Eval, Bs, RT, Ds) ->
fun() ->
exit(
case
- io:scan_erl_exprs(group_leader(), Prompt, 1)
+ io:scan_erl_exprs(group_leader(), Prompt, 1, [text])
of
{ok,Toks,_EndPos} ->
- erl_parse:parse_exprs(Toks);
+ lib:extended_parse_exprs(Toks);
{eof,_EndPos} ->
eof;
{error,ErrorInfo,_EndPos} ->
@@ -349,16 +350,10 @@ default_prompt(N) ->
%% Don't bother flattening the list irrespective of what the
%% I/O-protocol states.
case is_alive() of
- true -> io_lib:format(<<"(~ts)~w> ">>, [node_string(), N]);
+ true -> io_lib:format(<<"(~s)~w> ">>, [node(), N]);
false -> io_lib:format(<<"~w> ">>, [N])
end.
-node_string() ->
- case encoding() of
- latin1 -> io_lib:write_atom_as_latin1(node());
- _ -> io_lib:write_atom(node())
- end.
-
%% expand_hist(Expressions, CommandNumber)
%% Preprocess the expression list replacing all history list commands
%% with their expansions.
diff --git a/lib/stdlib/src/stdlib.app.src b/lib/stdlib/src/stdlib.app.src
index 82ab484ea6..d56f27953f 100644
--- a/lib/stdlib/src/stdlib.app.src
+++ b/lib/stdlib/src/stdlib.app.src
@@ -39,6 +39,7 @@
edlin_expand,
epp,
eval_bits,
+ erl_abstract_code,
erl_anno,
erl_bits,
erl_compile,
@@ -99,6 +100,7 @@
sys,
timer,
unicode,
+ unicode_util,
win32reg,
zip]},
{registered,[timer_server,rsh_starter,take_over_monitor,pool_master,
diff --git a/lib/stdlib/src/string.erl b/lib/stdlib/src/string.erl
index c659db78bd..a0fa60fbc7 100644
--- a/lib/stdlib/src/string.erl
+++ b/lib/stdlib/src/string.erl
@@ -17,43 +17,1322 @@
%%
%% %CopyrightEnd%
%%
+%% A string library that works on grapheme clusters, with the exception
+%% of codepoints of class 'prepend' and non modern (or decomposed) Hangul.
+%% If these codepoints appear, functions like 'find/2' may return a string
+%% which starts inside a grapheme cluster.
+%% These exceptions are made because the codepoints classes are
+%% seldom used and require that we are able look at previous codepoints in
+%% the stream and is thus hard to implement effectively.
+%%
+%% GC (grapheme cluster) implies that the length of string 'ß↑e̊' is 3 though
+%% it is represented by the codepoints [223,8593,101,778] or the
+%% utf8 binary <<195,159,226,134,145,101,204,138>>
+%%
+%% And that searching for strings or graphemes finds the correct positions:
+%%
+%% find("eeeee̊eee", "e̊") -> "e̊ee".:
+%% find("1£4e̊abcdef", "e") -> "ef"
+%%
+%% Most functions expect all input to be normalized to one form,
+%% see unicode:characters_to_nfc and unicode:characters_to_nfd functions.
+%% When appending strings no checking is done to verify that the
+%% result is valid unicode strings.
+%%
+%% The functions may crash for invalid utf-8 input.
+%%
+%% Return value should be kept consistent when return type is
+%% unicode:chardata() i.e. binary input => binary output,
+%% list input => list output mixed input => mixed output
+%%
-module(string).
--export([len/1,equal/2,concat/2,chr/2,rchr/2,str/2,rstr/2,
- span/2,cspan/2,substr/2,substr/3,tokens/2,chars/2,chars/3]).
+-export([is_empty/1, length/1, to_graphemes/1,
+ reverse/1,
+ equal/2, equal/3, equal/4,
+ slice/2, slice/3,
+ pad/2, pad/3, pad/4, trim/1, trim/2, trim/3, chomp/1,
+ take/2, take/3, take/4,
+ lexemes/2, nth_lexeme/3,
+ uppercase/1, lowercase/1, titlecase/1,casefold/1,
+ prefix/2,
+ split/2,split/3,replace/3,replace/4,
+ find/2,find/3,
+ next_codepoint/1, next_grapheme/1
+ ]).
+
+-export([to_float/1, to_integer/1]).
+
+%% Old (will be deprecated) lists/string API kept for backwards compability
+-export([len/1, concat/2, % equal/2, (extended in the new api)
+ chr/2,rchr/2,str/2,rstr/2,
+ span/2,cspan/2,substr/2,substr/3, tokens/2,
+ chars/2,chars/3]).
-export([copies/2,words/1,words/2,strip/1,strip/2,strip/3,
sub_word/2,sub_word/3,left/2,left/3,right/2,right/3,
sub_string/2,sub_string/3,centre/2,centre/3, join/2]).
-export([to_upper/1, to_lower/1]).
+%%
+-import(lists,[member/2]).
--import(lists,[reverse/1,member/2]).
+-compile({no_auto_import,[length/1]}).
-%%---------------------------------------------------------------------------
+-export_type([grapheme_cluster/0]).
-%%% BIFs
+-type grapheme_cluster() :: char() | [char()].
+-type direction() :: 'leading' | 'trailing'.
--export([to_float/1, to_integer/1]).
+-dialyzer({no_improper_lists, stack/2}).
+%%% BIFs internal (not documented) should not to be used outside of this module
+%%% May be removed
+-export([list_to_float/1, list_to_integer/1]).
--spec to_float(String) -> {Float, Rest} | {error, Reason} when
+%% Uses bifs: string:list_to_float/1 and string:list_to_integer/1
+-spec list_to_float(String) -> {Float, Rest} | {'error', Reason} when
String :: string(),
Float :: float(),
Rest :: string(),
- Reason :: no_float | not_a_list.
+ Reason :: 'no_float' | 'not_a_list'.
-to_float(_) ->
+list_to_float(_) ->
erlang:nif_error(undef).
--spec to_integer(String) -> {Int, Rest} | {error, Reason} when
+-spec list_to_integer(String) -> {Int, Rest} | {'error', Reason} when
String :: string(),
Int :: integer(),
Rest :: string(),
- Reason :: no_integer | not_a_list.
+ Reason :: 'no_integer' | 'not_a_list'.
-to_integer(_) ->
+list_to_integer(_) ->
erlang:nif_error(undef).
%%% End of BIFs
+%% Check if string is the empty string
+-spec is_empty(String::unicode:chardata()) -> boolean().
+is_empty([]) -> true;
+is_empty(<<>>) -> true;
+is_empty([L|R]) -> is_empty(L) andalso is_empty(R);
+is_empty(_) -> false.
+
+%% Count the number of grapheme clusters in chardata
+-spec length(String::unicode:chardata()) -> non_neg_integer().
+length(CD) ->
+ length_1(unicode_util:gc(CD), 0).
+
+%% Convert a string to a list of grapheme clusters
+-spec to_graphemes(String::unicode:chardata()) -> [grapheme_cluster()].
+to_graphemes(CD0) ->
+ case unicode_util:gc(CD0) of
+ [GC|CD] -> [GC|to_graphemes(CD)];
+ [] -> []
+ end.
+
+%% Compare two strings return boolean, assumes that the input are
+%% normalized to same form, see unicode:characters_to_nfX_xxx(..)
+-spec equal(A, B) -> boolean() when
+ A::unicode:chardata(),
+ B::unicode:chardata().
+equal(A,B) when is_binary(A), is_binary(B) ->
+ A =:= B;
+equal(A,B) ->
+ equal_1(A,B).
+
+%% Compare two strings return boolean, assumes that the input are
+%% normalized to same form, see unicode:characters_to_nfX_xxx(..)
+%% does casefold on the fly
+-spec equal(A, B, IgnoreCase) -> boolean() when
+ A::unicode:chardata(),
+ B::unicode:chardata(),
+ IgnoreCase :: boolean().
+equal(A, B, false) ->
+ equal(A,B);
+equal(A, B, true) ->
+ equal_nocase(A,B).
+
+%% Compare two strings return boolean
+%% if specified does casefold and normalization on the fly
+-spec equal(A, B, IgnoreCase, Norm) -> boolean() when
+ A :: unicode:chardata(),
+ B :: unicode:chardata(),
+ IgnoreCase :: boolean(),
+ Norm :: 'none' | 'nfc' | 'nfd' | 'nfkc' | 'nfkd'.
+equal(A, B, Case, none) ->
+ equal(A,B,Case);
+equal(A, B, false, Norm) ->
+ equal_norm(A, B, Norm);
+equal(A, B, true, Norm) ->
+ equal_norm_nocase(A, B, Norm).
+
+%% Reverse grapheme clusters
+-spec reverse(String::unicode:chardata()) -> [grapheme_cluster()].
+reverse(CD) ->
+ reverse_1(CD, []).
+
+%% Slice a string and return rest of string
+%% Note: counts grapheme_clusters
+-spec slice(String, Start) -> Slice when
+ String::unicode:chardata(),
+ Start :: non_neg_integer(),
+ Slice :: unicode:chardata().
+slice(CD, N) when is_integer(N), N >= 0 ->
+ slice_l(CD, N, is_binary(CD)).
+
+-spec slice(String, Start, Length) -> Slice when
+ String::unicode:chardata(),
+ Start :: non_neg_integer(),
+ Length :: 'infinity' | non_neg_integer(),
+ Slice :: unicode:chardata().
+slice(CD, N, Length)
+ when is_integer(N), N >= 0, is_integer(Length), Length > 0 ->
+ slice_trail(slice_l(CD, N, is_binary(CD)), Length);
+slice(CD, N, infinity) ->
+ slice_l(CD, N, is_binary(CD));
+slice(CD, _, 0) ->
+ case is_binary(CD) of
+ true -> <<>>;
+ false -> []
+ end.
+
+%% Pad a string to desired length
+-spec pad(String, Length) -> unicode:charlist() when
+ String ::unicode:chardata(),
+ Length :: integer().
+pad(CD, Length) ->
+ pad(CD, Length, trailing, $\s).
+
+-spec pad(String, Length, Dir) -> unicode:charlist() when
+ String ::unicode:chardata(),
+ Length :: integer(),
+ Dir :: direction() | 'both'.
+pad(CD, Length, Dir) ->
+ pad(CD, Length, Dir, $\s).
+
+-spec pad(String, Length, Dir, Char) -> unicode:charlist() when
+ String ::unicode:chardata(),
+ Length :: integer(),
+ Dir :: direction() | 'both',
+ Char :: grapheme_cluster().
+pad(CD, Length, leading, Char) when is_integer(Length) ->
+ Len = length(CD),
+ [lists:duplicate(max(0, Length-Len), Char), CD];
+pad(CD, Length, trailing, Char) when is_integer(Length) ->
+ Len = length(CD),
+ [CD|lists:duplicate(max(0, Length-Len), Char)];
+pad(CD, Length, both, Char) when is_integer(Length) ->
+ Len = length(CD),
+ Size = max(0, Length-Len),
+ Pre = lists:duplicate(Size div 2, Char),
+ Post = case Size rem 2 of
+ 1 -> [Char];
+ _ -> []
+ end,
+ [Pre, CD, Pre|Post].
+
+%% Strip characters from whitespace or Separator in Direction
+-spec trim(String) -> unicode:chardata() when
+ String :: unicode:chardata().
+trim(Str) ->
+ trim(Str, both, unicode_util:whitespace()).
+
+-spec trim(String, Dir) -> unicode:chardata() when
+ String :: unicode:chardata(),
+ Dir :: direction() | 'both'.
+trim(Str, Dir) ->
+ trim(Str, Dir, unicode_util:whitespace()).
+
+-spec trim(String, Dir, Characters) -> unicode:chardata() when
+ String :: unicode:chardata(),
+ Dir :: direction() | 'both',
+ Characters :: [grapheme_cluster()].
+trim(Str, _, []) -> Str;
+trim(Str, leading, Sep) when is_list(Sep) ->
+ trim_l(Str, search_pattern(Sep));
+trim(Str, trailing, Sep) when is_list(Sep) ->
+ trim_t(Str, 0, search_pattern(Sep));
+trim(Str, both, Sep0) when is_list(Sep0) ->
+ Sep = search_pattern(Sep0),
+ trim_t(trim_l(Str,Sep), 0, Sep).
+
+%% Delete trailing newlines or \r\n
+-spec chomp(String::unicode:chardata()) -> unicode:chardata().
+chomp(Str) ->
+ trim_t(Str,0, {[[$\r,$\n],$\n], [$\r,$\n], [<<$\r>>,<<$\n>>]}).
+
+%% Split String into two parts where the leading part consists of Characters
+-spec take(String, Characters) -> {Leading, Trailing} when
+ String::unicode:chardata(),
+ Characters::[grapheme_cluster()],
+ Leading::unicode:chardata(),
+ Trailing::unicode:chardata().
+take(Str, Sep) ->
+ take(Str, Sep, false, leading).
+-spec take(String, Characters, Complement) -> {Leading, Trailing} when
+ String::unicode:chardata(),
+ Characters::[grapheme_cluster()],
+ Complement::boolean(),
+ Leading::unicode:chardata(),
+ Trailing::unicode:chardata().
+take(Str, Sep, Complement) ->
+ take(Str, Sep, Complement, leading).
+-spec take(String, Characters, Complement, Dir) -> {Leading, Trailing} when
+ String::unicode:chardata(),
+ Characters::[grapheme_cluster()],
+ Complement::boolean(),
+ Dir::direction(),
+ Leading::unicode:chardata(),
+ Trailing::unicode:chardata().
+take(Str, [], Complement, Dir) ->
+ Empty = case is_binary(Str) of true -> <<>>; false -> [] end,
+ case {Complement,Dir} of
+ {false, leading} -> {Empty, Str};
+ {false, trailing} -> {Str, Empty};
+ {true, leading} -> {Str, Empty};
+ {true, trailing} -> {Empty, Str}
+ end;
+take(Str, Sep0, false, leading) ->
+ Sep = search_pattern(Sep0),
+ take_l(Str, Sep, []);
+take(Str, Sep0, true, leading) ->
+ Sep = search_pattern(Sep0),
+ take_lc(Str, Sep, []);
+take(Str, Sep0, false, trailing) ->
+ Sep = search_pattern(Sep0),
+ take_t(Str, 0, Sep);
+take(Str, Sep0, true, trailing) ->
+ Sep = search_pattern(Sep0),
+ take_tc(Str, 0, Sep).
+
+%% Uppercase all chars in Str
+-spec uppercase(String::unicode:chardata()) -> unicode:chardata().
+uppercase(CD) when is_list(CD) ->
+ uppercase_list(CD);
+uppercase(CD) when is_binary(CD) ->
+ uppercase_bin(CD,<<>>).
+
+%% Lowercase all chars in Str
+-spec lowercase(String::unicode:chardata()) -> unicode:chardata().
+lowercase(CD) when is_list(CD) ->
+ lowercase_list(CD);
+lowercase(CD) when is_binary(CD) ->
+ lowercase_bin(CD,<<>>).
+
+%% Make a titlecase of the first char in Str
+-spec titlecase(String::unicode:chardata()) -> unicode:chardata().
+titlecase(CD) when is_list(CD) ->
+ case unicode_util:titlecase(CD) of
+ [GC|Tail] -> append(GC,Tail);
+ Empty -> Empty
+ end;
+titlecase(CD) when is_binary(CD) ->
+ case unicode_util:titlecase(CD) of
+ [CP|Chars] when is_integer(CP) -> <<CP/utf8,Chars/binary>>;
+ [CPs|Chars] ->
+ << << <<CP/utf8>> || CP <- CPs>>/binary, Chars/binary>>;
+ [] -> <<>>
+ end.
+
+%% Make a comparable string of the Str should be used for equality tests only
+-spec casefold(String::unicode:chardata()) -> unicode:chardata().
+casefold(CD) when is_list(CD) ->
+ casefold_list(CD);
+casefold(CD) when is_binary(CD) ->
+ casefold_bin(CD,<<>>).
+
+-spec to_integer(String) -> {Int, Rest} | {'error', Reason} when
+ String :: unicode:chardata(),
+ Int :: integer(),
+ Rest :: unicode:chardata(),
+ Reason :: 'no_integer' | badarg.
+
+to_integer(String) ->
+ try take(String, "+-0123456789") of
+ {Head, Tail} ->
+ case is_empty(Head) of
+ true -> {error, no_integer};
+ false ->
+ List = unicode:characters_to_list(Head),
+ case string:list_to_integer(List) of
+ {error, _} = Err -> Err;
+ {Int, Rest} ->
+ to_number(String, Int, Rest, List, Tail)
+ end
+ end
+ catch _:_ -> {error, badarg}
+ end.
+
+-spec to_float(String) -> {Float, Rest} | {'error', Reason} when
+ String :: unicode:chardata(),
+ Float :: float(),
+ Rest :: unicode:chardata(),
+ Reason :: 'no_float' | 'badarg'.
+
+to_float(String) ->
+ try take(String, "+-0123456789eE.,") of
+ {Head, Tail} ->
+ case is_empty(Head) of
+ true -> {error, no_float};
+ false ->
+ List = unicode:characters_to_list(Head),
+ case string:list_to_float(List) of
+ {error, _} = Err -> Err;
+ {Float, Rest} ->
+ to_number(String, Float, Rest, List, Tail)
+ end
+ end
+ catch _:_ -> {error, badarg}
+ end.
+
+to_number(String, Number, Rest, List, _Tail) when is_binary(String) ->
+ BSz = length(List)-length(Rest),
+ <<_:BSz/binary, Cont/binary>> = String,
+ {Number, Cont};
+to_number(_, Number, Rest, _, Tail) ->
+ {Number, concat(Rest,Tail)}.
+
+%% Return the remaining string with prefix removed or else nomatch
+-spec prefix(String::unicode:chardata(), Prefix::unicode:chardata()) ->
+ 'nomatch' | unicode:chardata().
+prefix(Str, []) -> Str;
+prefix(Str, Prefix0) ->
+ Prefix = unicode:characters_to_list(Prefix0),
+ case prefix_1(Str, Prefix) of
+ [] when is_binary(Str) -> <<>>;
+ Res -> Res
+ end.
+
+%% split String with the first occurrence of SearchPattern, return list of splits
+-spec split(String, SearchPattern) -> [unicode:chardata()] when
+ String :: unicode:chardata(),
+ SearchPattern :: unicode:chardata().
+split(String, SearchPattern) ->
+ split(String, SearchPattern, leading).
+
+%% split String with SearchPattern, return list of splits
+-spec split(String, SearchPattern, Where) -> [unicode:chardata()] when
+ String :: unicode:chardata(),
+ SearchPattern :: unicode:chardata(),
+ Where :: direction() | 'all'.
+split(String, SearchPattern, Where) ->
+ case is_empty(SearchPattern) of
+ true -> [String];
+ false ->
+ SearchPatternCPs = unicode:characters_to_list(SearchPattern),
+ case split_1(String, SearchPatternCPs, 0, Where, [], []) of
+ {_Curr, []} -> [String];
+ {_Curr, Acc} when Where =:= trailing -> Acc;
+ {Curr, Acc} when Where =:= all -> lists:reverse([Curr|Acc]);
+ Acc when is_list(Acc) -> Acc
+ end
+ end.
+
+%% Replace the first SearchPattern in String with Replacement
+-spec replace(String, SearchPattern, Replacement) ->
+ [unicode:chardata()] when
+ String :: unicode:chardata(),
+ SearchPattern :: unicode:chardata(),
+ Replacement :: unicode:chardata().
+replace(String, SearchPattern, Replacement) ->
+ lists:join(Replacement, split(String, SearchPattern)).
+
+%% Replace Where SearchPattern in String with Replacement
+-spec replace(String, SearchPattern, Replacement, Where) ->
+ [unicode:chardata()] when
+ String :: unicode:chardata(),
+ SearchPattern :: unicode:chardata(),
+ Replacement :: unicode:chardata(),
+ Where :: direction() | 'all'.
+replace(String, SearchPattern, Replacement, Where) ->
+ lists:join(Replacement, split(String, SearchPattern, Where)).
+
+%% Split Str into a list of chardata separated by one of the grapheme
+%% clusters in Seps
+-spec lexemes(String::unicode:chardata(),
+ SeparatorList::[grapheme_cluster()]) ->
+ [unicode:chardata()].
+lexemes([], _) -> [];
+lexemes(Str, Seps0) when is_list(Seps0) ->
+ Seps = search_pattern(Seps0),
+ lexemes_m(Str, Seps, []).
+
+-spec nth_lexeme(String, N, SeparatorList) -> unicode:chardata() when
+ String::unicode:chardata(),
+ N::non_neg_integer(),
+ SeparatorList::[grapheme_cluster()].
+
+nth_lexeme(Str, 1, []) -> Str;
+nth_lexeme(Str, N, Seps0) when is_list(Seps0), is_integer(N), N > 0 ->
+ Seps = search_pattern(Seps0),
+ nth_lexeme_m(Str, Seps, N).
+
+%% find first SearchPattern in String return rest of string
+-spec find(String, SearchPattern) -> unicode:chardata() | 'nomatch' when
+ String::unicode:chardata(),
+ SearchPattern::unicode:chardata().
+find(String, SearchPattern) ->
+ find(String, SearchPattern, leading).
+
+%% find SearchPattern in String (search in Dir direction) return rest of string
+-spec find(String, SearchPattern, Dir) -> unicode:chardata() | 'nomatch' when
+ String::unicode:chardata(),
+ SearchPattern::unicode:chardata(),
+ Dir::direction().
+find(String, "", _) -> String;
+find(String, <<>>, _) -> String;
+find(String, SearchPattern, leading) ->
+ find_l(String, unicode:characters_to_list(SearchPattern));
+find(String, SearchPattern, trailing) ->
+ find_r(String, unicode:characters_to_list(SearchPattern), nomatch).
+
+%% Fetch first codepoint and return rest in tail
+-spec next_grapheme(String::unicode:chardata()) ->
+ maybe_improper_list(grapheme_cluster(),unicode:chardata()).
+next_grapheme(CD) -> unicode_util:gc(CD).
+
+%% Fetch first grapheme cluster and return rest in tail
+-spec next_codepoint(String::unicode:chardata()) ->
+ maybe_improper_list(char(),unicode:chardata()).
+next_codepoint(CD) -> unicode_util:cp(CD).
+
+%% Internals
+
+length_1([_|Rest], N) ->
+ length_1(unicode_util:gc(Rest), N+1);
+length_1([], N) ->
+ N.
+
+equal_1([A|AR], [B|BR]) when is_integer(A), is_integer(B) ->
+ A =:= B andalso equal_1(AR, BR);
+equal_1([], BR) -> is_empty(BR);
+equal_1(A0,B0) ->
+ case {unicode_util:cp(A0), unicode_util:cp(B0)} of
+ {[CP|A],[CP|B]} -> equal_1(A,B);
+ {[], []} -> true;
+ _ -> false
+ end.
+
+equal_nocase(A, A) -> true;
+equal_nocase(A0, B0) ->
+ case {unicode_util:cp(unicode_util:casefold(A0)),
+ unicode_util:cp(unicode_util:casefold(B0))} of
+ {[CP|A],[CP|B]} -> equal_nocase(A,B);
+ {[], []} -> true;
+ _ -> false
+ end.
+
+equal_norm(A, A, _Norm) -> true;
+equal_norm(A0, B0, Norm) ->
+ case {unicode_util:cp(unicode_util:Norm(A0)),
+ unicode_util:cp(unicode_util:Norm(B0))} of
+ {[CP|A],[CP|B]} -> equal_norm(A,B, Norm);
+ {[], []} -> true;
+ _ -> false
+ end.
+
+equal_norm_nocase(A, A, _Norm) -> true;
+equal_norm_nocase(A0, B0, Norm) ->
+ case {unicode_util:cp(unicode_util:casefold(unicode_util:Norm(A0))),
+ unicode_util:cp(unicode_util:casefold(unicode_util:Norm(B0)))} of
+ {[CP|A],[CP|B]} -> equal_norm_nocase(A,B, Norm);
+ {[], []} -> true;
+ _ -> false
+ end.
+
+reverse_1(CD, Acc) ->
+ case unicode_util:gc(CD) of
+ [GC|Rest] -> reverse_1(Rest, [GC|Acc]);
+ [] -> Acc
+ end.
+
+slice_l(CD, N, Binary) when N > 0 ->
+ case unicode_util:gc(CD) of
+ [_|Cont] -> slice_l(Cont, N-1, Binary);
+ [] when Binary -> <<>>;
+ [] -> []
+ end;
+slice_l(Cont, 0, Binary) ->
+ case is_empty(Cont) of
+ true when Binary -> <<>>;
+ _ -> Cont
+ end.
+
+slice_trail(CD, N) when is_list(CD) ->
+ slice_list(CD, N);
+slice_trail(CD, N) when is_binary(CD) ->
+ slice_bin(CD, N, CD).
+
+slice_list(CD, N) when N > 0 ->
+ case unicode_util:gc(CD) of
+ [GC|Cont] -> append(GC, slice_list(Cont, N-1));
+ [] -> []
+ end;
+slice_list(_, 0) ->
+ [].
+
+slice_bin(CD, N, Orig) when N > 0 ->
+ case unicode_util:gc(CD) of
+ [_|Cont] -> slice_bin(Cont, N-1, Orig);
+ [] -> Orig
+ end;
+slice_bin([], 0, Orig) ->
+ Orig;
+slice_bin(CD, 0, Orig) ->
+ Sz = byte_size(Orig) - byte_size(CD),
+ <<Keep:Sz/binary, _/binary>> = Orig,
+ Keep.
+
+uppercase_list(CPs0) ->
+ case unicode_util:uppercase(CPs0) of
+ [Char|CPs] -> append(Char,uppercase_list(CPs));
+ [] -> []
+ end.
+
+uppercase_bin(CPs0, Acc) ->
+ case unicode_util:uppercase(CPs0) of
+ [Char|CPs] when is_integer(Char) ->
+ uppercase_bin(CPs, <<Acc/binary, Char/utf8>>);
+ [Chars|CPs] ->
+ uppercase_bin(CPs, <<Acc/binary,
+ << <<CP/utf8>> || CP <- Chars>>/binary >>);
+ [] -> Acc
+ end.
+
+lowercase_list(CPs0) ->
+ case unicode_util:lowercase(CPs0) of
+ [Char|CPs] -> append(Char,lowercase_list(CPs));
+ [] -> []
+ end.
+
+lowercase_bin(CPs0, Acc) ->
+ case unicode_util:lowercase(CPs0) of
+ [Char|CPs] when is_integer(Char) ->
+ lowercase_bin(CPs, <<Acc/binary, Char/utf8>>);
+ [Chars|CPs] ->
+ lowercase_bin(CPs, <<Acc/binary,
+ << <<CP/utf8>> || CP <- Chars>>/binary >>);
+ [] -> Acc
+ end.
+
+casefold_list(CPs0) ->
+ case unicode_util:casefold(CPs0) of
+ [Char|CPs] -> append(Char, casefold_list(CPs));
+ [] -> []
+ end.
+
+casefold_bin(CPs0, Acc) ->
+ case unicode_util:casefold(CPs0) of
+ [Char|CPs] when is_integer(Char) ->
+ casefold_bin(CPs, <<Acc/binary, Char/utf8>>);
+ [Chars|CPs] ->
+ casefold_bin(CPs, <<Acc/binary,
+ << <<CP/utf8>> || CP <- Chars>>/binary >>);
+ [] -> Acc
+ end.
+
+
+trim_l([Bin|Cont0], Sep) when is_binary(Bin) ->
+ case bin_search_inv(Bin, Cont0, Sep) of
+ {nomatch, Cont} -> trim_l(Cont, Sep);
+ Keep -> Keep
+ end;
+trim_l(Str, {GCs, _, _}=Sep) when is_list(Str) ->
+ case unicode_util:gc(Str) of
+ [C|Cs] ->
+ case lists:member(C, GCs) of
+ true -> trim_l(Cs, Sep);
+ false -> Str
+ end;
+ [] -> []
+ end;
+trim_l(Bin, Sep) when is_binary(Bin) ->
+ case bin_search_inv(Bin, [], Sep) of
+ {nomatch,_} -> <<>>;
+ [Keep] -> Keep
+ end.
+
+trim_t([Bin|Cont0], N, Sep) when is_binary(Bin) ->
+ <<_:N/binary, Rest/binary>> = Bin,
+ case bin_search(Rest, Cont0, Sep) of
+ {nomatch,_} ->
+ stack(Bin, trim_t(Cont0, 0, Sep));
+ [SepStart|Cont1] ->
+ case bin_search_inv(SepStart, Cont1, Sep) of
+ {nomatch, Cont} ->
+ Tail = trim_t(Cont, 0, Sep),
+ case is_empty(Tail) of
+ true ->
+ KeepSz = byte_size(Bin) - byte_size(SepStart),
+ <<Keep:KeepSz/binary, _/binary>> = Bin,
+ Keep;
+ false ->
+ Used = cp_prefix(Cont0, Cont),
+ stack(Bin, stack(Used, Tail))
+ end;
+ [NonSep|Cont] when is_binary(NonSep) ->
+ KeepSz = byte_size(Bin) - byte_size(NonSep),
+ trim_t([Bin|Cont], KeepSz, Sep)
+ end
+ end;
+trim_t(Str, 0, {GCs,CPs,_}=Sep) when is_list(Str) ->
+ case unicode_util:cp(Str) of
+ [CP|Cs] ->
+ case lists:member(CP, CPs) of
+ true ->
+ [GC|Cs1] = unicode_util:gc(Str),
+ case lists:member(GC, GCs) of
+ true ->
+ Tail = trim_t(Cs1, 0, Sep),
+ case is_empty(Tail) of
+ true -> [];
+ false -> append(GC,Tail)
+ end;
+ false ->
+ append(GC,trim_t(Cs1, 0, Sep))
+ end;
+ false ->
+ append(CP,trim_t(Cs, 0, Sep))
+ end;
+ [] -> []
+ end;
+trim_t(Bin, N, Sep) when is_binary(Bin) ->
+ <<_:N/binary, Rest/binary>> = Bin,
+ case bin_search(Rest, Sep) of
+ {nomatch,_} -> Bin;
+ [SepStart] ->
+ case bin_search_inv(SepStart, [], Sep) of
+ {nomatch,_} ->
+ KeepSz = byte_size(Bin) - byte_size(SepStart),
+ <<Keep:KeepSz/binary, _/binary>> = Bin,
+ Keep;
+ [NonSep] ->
+ KeepSz = byte_size(Bin) - byte_size(NonSep),
+ trim_t(Bin, KeepSz, Sep)
+ end
+ end.
+
+take_l([Bin|Cont0], Sep, Acc) when is_binary(Bin) ->
+ case bin_search_inv(Bin, Cont0, Sep) of
+ {nomatch, Cont} ->
+ Used = cp_prefix(Cont0, Cont),
+ take_l(Cont, Sep, [unicode:characters_to_binary([Bin|Used])|Acc]);
+ [Bin1|_]=After when is_binary(Bin1) ->
+ First = byte_size(Bin) - byte_size(Bin1),
+ <<Keep:First/binary, _/binary>> = Bin,
+ {btoken(Keep,Acc), After}
+ end;
+take_l(Str, {GCs, _, _}=Sep, Acc) when is_list(Str) ->
+ case unicode_util:gc(Str) of
+ [C|Cs] ->
+ case lists:member(C, GCs) of
+ true -> take_l(Cs, Sep, append(rev(C),Acc));
+ false -> {rev(Acc), Str}
+ end;
+ [] -> {rev(Acc), []}
+ end;
+take_l(Bin, Sep, Acc) when is_binary(Bin) ->
+ case bin_search_inv(Bin, [], Sep) of
+ {nomatch,_} ->
+ {btoken(Bin, Acc), <<>>};
+ [After] ->
+ First = byte_size(Bin) - byte_size(After),
+ <<Keep:First/binary, _/binary>> = Bin,
+ {btoken(Keep, Acc), After}
+ end.
+
+take_lc([Bin|Cont0], Sep, Acc) when is_binary(Bin) ->
+ case bin_search(Bin, Cont0, Sep) of
+ {nomatch, Cont} ->
+ Used = cp_prefix(Cont0, Cont),
+ take_lc(Cont, Sep, [unicode:characters_to_binary([Bin|Used])|Acc]);
+ [Bin1|_]=After when is_binary(Bin1) ->
+ First = byte_size(Bin) - byte_size(Bin1),
+ <<Keep:First/binary, _/binary>> = Bin,
+ {btoken(Keep,Acc), After}
+ end;
+take_lc(Str, {GCs, _, _}=Sep, Acc) when is_list(Str) ->
+ case unicode_util:gc(Str) of
+ [C|Cs] ->
+ case lists:member(C, GCs) of
+ false -> take_lc(Cs, Sep, append(rev(C),Acc));
+ true -> {rev(Acc), Str}
+ end;
+ [] -> {rev(Acc), []}
+ end;
+take_lc(Bin, Sep, Acc) when is_binary(Bin) ->
+ case bin_search(Bin, [], Sep) of
+ {nomatch,_} ->
+ {btoken(Bin, Acc), <<>>};
+ [After] ->
+ First = byte_size(Bin) - byte_size(After),
+ <<Keep:First/binary, _/binary>> = Bin,
+ {btoken(Keep, Acc), After}
+ end.
+
+take_t([Bin|Cont0], N, Sep) when is_binary(Bin) ->
+ <<_:N/binary, Rest/binary>> = Bin,
+ case bin_search(Rest, Cont0, Sep) of
+ {nomatch,Cont} ->
+ Used = cp_prefix(Cont0, Cont),
+ {Head, Tail} = take_t(Cont, 0, Sep),
+ {stack(unicode:characters_to_binary([Bin|Used]), Head), Tail};
+ [SepStart|Cont1] ->
+ case bin_search_inv(SepStart, Cont1, Sep) of
+ {nomatch, Cont} ->
+ {Head, Tail} = take_t(Cont, 0, Sep),
+ Used = cp_prefix(Cont0, Cont),
+ case equal(Tail, Cont) of
+ true ->
+ KeepSz = byte_size(Bin) - byte_size(SepStart),
+ <<Keep:KeepSz/binary, End/binary>> = Bin,
+ {stack(Keep,Head), stack(stack(End,Used),Tail)};
+ false ->
+ {stack(unicode:characters_to_binary([Bin|Used]),Head), Tail}
+ end;
+ [NonSep|Cont] when is_binary(NonSep) ->
+ KeepSz = byte_size(Bin) - byte_size(NonSep),
+ take_t([Bin|Cont], KeepSz, Sep)
+ end
+ end;
+take_t(Str, 0, {GCs,CPs,_}=Sep) when is_list(Str) ->
+ case unicode_util:cp(Str) of
+ [CP|Cs] ->
+ case lists:member(CP, CPs) of
+ true ->
+ [GC|Cs1] = unicode_util:gc(Str),
+ case lists:member(GC, GCs) of
+ true ->
+ {Head, Tail} = take_t(Cs1, 0, Sep),
+ case equal(Tail, Cs1) of
+ true -> {Head, append(GC,Tail)};
+ false -> {append(GC,Head), Tail}
+ end;
+ false ->
+ {Head, Tail} = take_t(Cs, 0, Sep),
+ {append(CP,Head), Tail}
+ end;
+ false ->
+ {Head, Tail} = take_t(Cs, 0, Sep),
+ {append(CP,Head), Tail}
+ end;
+ [] -> {[],[]}
+ end;
+take_t(Bin, N, Sep) when is_binary(Bin) ->
+ <<_:N/binary, Rest/binary>> = Bin,
+ case bin_search(Rest, Sep) of
+ {nomatch,_} -> {Bin, <<>>};
+ [SepStart] ->
+ case bin_search_inv(SepStart, [], Sep) of
+ {nomatch,_} ->
+ KeepSz = byte_size(Bin) - byte_size(SepStart),
+ <<Before:KeepSz/binary, End/binary>> = Bin,
+ {Before, End};
+ [NonSep] ->
+ KeepSz = byte_size(Bin) - byte_size(NonSep),
+ take_t(Bin, KeepSz, Sep)
+ end
+ end.
+
+take_tc([Bin|Cont0], N, Sep) when is_binary(Bin) ->
+ <<_:N/binary, Rest/binary>> = Bin,
+ case bin_search_inv(Rest, Cont0, Sep) of
+ {nomatch,Cont} ->
+ Used = cp_prefix(Cont0, Cont),
+ {Head, Tail} = take_tc(Cont, 0, Sep),
+ {stack(unicode:characters_to_binary([Bin|Used]), Head), Tail};
+ [SepStart|Cont1] ->
+ case bin_search(SepStart, Cont1, Sep) of
+ {nomatch, Cont} ->
+ {Head, Tail} = take_tc(Cont, 0, Sep),
+ Used = cp_prefix(Cont0, Cont),
+ case equal(Tail, Cont) of
+ true ->
+ KeepSz = byte_size(Bin) - byte_size(SepStart),
+ <<Keep:KeepSz/binary, End/binary>> = Bin,
+ {stack(Keep,Head), stack(stack(End,Used),Tail)};
+ false ->
+ {stack(unicode:characters_to_binary([Bin|Used]),Head), Tail}
+ end;
+ [NonSep|Cont] when is_binary(NonSep) ->
+ KeepSz = byte_size(Bin) - byte_size(NonSep),
+ take_tc([Bin|Cont], KeepSz, Sep)
+ end
+ end;
+take_tc(Str, 0, {GCs,CPs,_}=Sep) when is_list(Str) ->
+ case unicode_util:cp(Str) of
+ [CP|Cs] ->
+ case lists:member(CP, CPs) of
+ true ->
+ [GC|Cs1] = unicode_util:gc(Str),
+ case lists:member(GC, GCs) of
+ false ->
+ {Head, Tail} = take_tc(Cs1, 0, Sep),
+ case equal(Tail, Cs1) of
+ true -> {Head, append(GC,Tail)};
+ false -> {append(GC,Head), Tail}
+ end;
+ true ->
+ {Head, Tail} = take_tc(Cs1, 0, Sep),
+ {append(GC,Head), Tail}
+ end;
+ false ->
+ {Head, Tail} = take_tc(Cs, 0, Sep),
+ case equal(Tail, Cs) of
+ true -> {Head, append(CP,Tail)};
+ false -> {append(CP,Head), Tail}
+ end
+ end;
+ [] -> {[],[]}
+ end;
+take_tc(Bin, N, Sep) when is_binary(Bin) ->
+ <<_:N/binary, Rest/binary>> = Bin,
+ case bin_search_inv(Rest, [], Sep) of
+ {nomatch,_} -> {Bin, <<>>};
+ [SepStart] ->
+ case bin_search(SepStart, [], Sep) of
+ {nomatch,_} ->
+ KeepSz = byte_size(Bin) - byte_size(SepStart),
+ <<Before:KeepSz/binary, End/binary>> = Bin,
+ {Before, End};
+ [NonSep] ->
+ KeepSz = byte_size(Bin) - byte_size(NonSep),
+ take_tc(Bin, KeepSz, Sep)
+ end
+ end.
+
+prefix_1(Cs, []) -> Cs;
+prefix_1(Cs, [_]=Pre) ->
+ prefix_2(unicode_util:gc(Cs), Pre);
+prefix_1(Cs, Pre) ->
+ prefix_2(unicode_util:cp(Cs), Pre).
+
+prefix_2([C|Cs], [C|Pre]) ->
+ prefix_1(Cs, Pre);
+prefix_2(_, _) ->
+ nomatch.
+
+split_1([Bin|Cont0], Needle, Start, Where, Curr0, Acc)
+ when is_binary(Bin) ->
+ case bin_search_str(Bin, Start, Cont0, Needle) of
+ {nomatch,Sz,Cont} ->
+ <<Keep:Sz/binary, _/binary>> = Bin,
+ split_1(Cont, Needle, 0, Where, [Keep|Curr0], Acc);
+ {Before, [Cs0|Cont], After} ->
+ Curr = add_non_empty(Before,Curr0),
+ case Where of
+ leading ->
+ [rev(Curr),After];
+ trailing ->
+ <<_/utf8, Cs/binary>> = Cs0,
+ Next = byte_size(Bin) - byte_size(Cs),
+ split_1([Bin|Cont], Needle, Next, Where,
+ Curr0, [rev(Curr),After]);
+ all ->
+ split_1(After, Needle, 0, Where, [], [rev(Curr)|Acc])
+ end
+ end;
+split_1(Cs0, [C|_]=Needle, _, Where, Curr, Acc) when is_list(Cs0) ->
+ case unicode_util:cp(Cs0) of
+ [C|Cs] ->
+ case prefix_1(Cs0, Needle) of
+ nomatch -> split_1(Cs, Needle, 0, Where, append(C,Curr), Acc);
+ Rest when Where =:= leading ->
+ [rev(Curr), Rest];
+ Rest when Where =:= trailing ->
+ split_1(Cs, Needle, 0, Where, [C|Curr], [rev(Curr), Rest]);
+ Rest when Where =:= all ->
+ split_1(Rest, Needle, 0, Where, [], [rev(Curr)|Acc])
+ end;
+ [Other|Cs] ->
+ split_1(Cs, Needle, 0, Where, append(Other,Curr), Acc);
+ [] ->
+ {rev(Curr), Acc}
+ end;
+split_1(Bin, [_C|_]=Needle, Start, Where, Curr0, Acc) ->
+ case bin_search_str(Bin, Start, [], Needle) of
+ {nomatch,_,_} ->
+ <<_:Start/binary, Keep/binary>> = Bin,
+ {rev([Keep|Curr0]), Acc};
+ {Before, [Cs0], After} ->
+ case Where of
+ leading ->
+ [rev([Before|Curr0]),After];
+ trailing ->
+ <<_/utf8, Cs/binary>> = Cs0,
+ Next = byte_size(Bin) - byte_size(Cs),
+ split_1(Bin, Needle, Next, Where, Curr0,
+ [btoken(Before,Curr0),After]);
+ all ->
+ Next = byte_size(Bin) - byte_size(After),
+ <<_:Start/binary, Keep/binary>> = Before,
+ Curr = [Keep|Curr0],
+ split_1(Bin, Needle, Next, Where, [], [rev(Curr)|Acc])
+ end
+ end.
+
+lexemes_m([Bin|Cont0], Seps, Ts) when is_binary(Bin) ->
+ case bin_search_inv(Bin, Cont0, Seps) of
+ {nomatch,Cont} ->
+ lexemes_m(Cont, Seps, Ts);
+ Cs ->
+ {Lexeme,Rest} = lexeme_pick(Cs, Seps, []),
+ lexemes_m(Rest, Seps, [Lexeme|Ts])
+ end;
+lexemes_m(Cs0, {GCs, _, _}=Seps, Ts) when is_list(Cs0) ->
+ case unicode_util:gc(Cs0) of
+ [C|Cs] ->
+ case lists:member(C, GCs) of
+ true ->
+ lexemes_m(Cs, Seps, Ts);
+ false ->
+ {Lexeme,Rest} = lexeme_pick(Cs0, Seps, []),
+ lexemes_m(Rest, Seps, [Lexeme|Ts])
+ end;
+ [] ->
+ lists:reverse(Ts)
+ end;
+lexemes_m(Bin, Seps, Ts) when is_binary(Bin) ->
+ case bin_search_inv(Bin, [], Seps) of
+ {nomatch,_} ->
+ lists:reverse(Ts);
+ [Cs] ->
+ {Lexeme,Rest} = lexeme_pick(Cs, Seps, []),
+ lexemes_m(Rest, Seps, add_non_empty(Lexeme,Ts))
+ end.
+
+lexeme_pick([CP|Cs1]=Cs0, {GCs,CPs,_}=Seps, Tkn) when is_integer(CP) ->
+ case lists:member(CP, CPs) of
+ true ->
+ [GC|Cs2] = unicode_util:gc(Cs0),
+ case lists:member(GC, GCs) of
+ true -> {rev(Tkn), Cs2};
+ false -> lexeme_pick(Cs2, Seps, append(rev(GC),Tkn))
+ end;
+ false -> lexeme_pick(Cs1, Seps, [CP|Tkn])
+ end;
+lexeme_pick([Bin|Cont0], Seps, Tkn) when is_binary(Bin) ->
+ case bin_search(Bin, Cont0, Seps) of
+ {nomatch,_} ->
+ lexeme_pick(Cont0, Seps, [Bin|Tkn]);
+ [Left|_Cont] = Cs ->
+ Bytes = byte_size(Bin) - byte_size(Left),
+ <<Lexeme:Bytes/binary, _/binary>> = Bin,
+ {btoken(Lexeme, Tkn), Cs}
+ end;
+lexeme_pick(Cs0, {GCs, CPs, _} = Seps, Tkn) when is_list(Cs0) ->
+ case unicode_util:cp(Cs0) of
+ [CP|Cs] ->
+ case lists:member(CP, CPs) of
+ true ->
+ [GC|Cs2] = unicode_util:gc(Cs0),
+ case lists:member(GC, GCs) of
+ true -> {rev(Tkn), Cs0};
+ false -> lexeme_pick(Cs2, Seps, append(rev(GC),Tkn))
+ end;
+ false ->
+ lexeme_pick(Cs, Seps, append(CP,Tkn))
+ end;
+ [] ->
+ {rev(Tkn), []}
+ end;
+lexeme_pick(Bin, Seps, Tkn) when is_binary(Bin) ->
+ case bin_search(Bin, Seps) of
+ {nomatch,_} ->
+ {btoken(Bin,Tkn), []};
+ [Left] ->
+ Bytes = byte_size(Bin) - byte_size(Left),
+ <<Lexeme:Bytes/binary, _/binary>> = Bin,
+ {btoken(Lexeme, Tkn), Left}
+ end.
+
+nth_lexeme_m([Bin|Cont0], Seps, N) when is_binary(Bin) ->
+ case bin_search_inv(Bin, Cont0, Seps) of
+ {nomatch,Cont} ->
+ nth_lexeme_m(Cont, Seps, N);
+ Cs when N > 1 ->
+ Rest = lexeme_skip(Cs, Seps),
+ nth_lexeme_m(Rest, Seps, N-1);
+ Cs ->
+ {Lexeme,_} = lexeme_pick(Cs, Seps, []),
+ Lexeme
+ end;
+nth_lexeme_m(Cs0, {GCs, _, _}=Seps, N) when is_list(Cs0) ->
+ case unicode_util:gc(Cs0) of
+ [C|Cs] ->
+ case lists:member(C, GCs) of
+ true ->
+ nth_lexeme_m(Cs, Seps, N);
+ false when N > 1 ->
+ Cs1 = lexeme_skip(Cs, Seps),
+ nth_lexeme_m(Cs1, Seps, N-1);
+ false ->
+ {Lexeme,_} = lexeme_pick(Cs0, Seps, []),
+ Lexeme
+ end;
+ [] ->
+ []
+ end;
+nth_lexeme_m(Bin, Seps, N) when is_binary(Bin) ->
+ case bin_search_inv(Bin, [], Seps) of
+ [Cs] when N > 1 ->
+ Cs1 = lexeme_skip(Cs, Seps),
+ nth_lexeme_m(Cs1, Seps, N-1);
+ [Cs] ->
+ {Lexeme,_} = lexeme_pick(Cs, Seps, []),
+ Lexeme;
+ {nomatch,_} ->
+ <<>>
+ end.
+
+lexeme_skip([CP|Cs1]=Cs0, {GCs,CPs,_}=Seps) when is_integer(CP) ->
+ case lists:member(CP, CPs) of
+ true ->
+ [GC|Cs2] = unicode_util:gc(Cs0),
+ case lists:member(GC, GCs) of
+ true -> Cs0;
+ false -> lexeme_skip(Cs2, Seps)
+ end;
+ false ->
+ lexeme_skip(Cs1, Seps)
+ end;
+lexeme_skip([Bin|Cont0], Seps) when is_binary(Bin) ->
+ case bin_search(Bin, Cont0, Seps) of
+ {nomatch,_} -> lexeme_skip(Cont0, Seps);
+ Cs -> Cs
+ end;
+lexeme_skip(Cs0, {GCs, CPs, _} = Seps) when is_list(Cs0) ->
+ case unicode_util:cp(Cs0) of
+ [CP|Cs] ->
+ case lists:member(CP, CPs) of
+ true ->
+ [GC|Cs2] = unicode_util:gc(Cs0),
+ case lists:member(GC, GCs) of
+ true -> Cs0;
+ false -> lexeme_skip(Cs2, Seps)
+ end;
+ false ->
+ lexeme_skip(Cs, Seps)
+ end;
+ [] ->
+ []
+ end;
+lexeme_skip(Bin, Seps) when is_binary(Bin) ->
+ case bin_search(Bin, Seps) of
+ {nomatch,_} -> <<>>;
+ [Left] -> Left
+ end.
+
+find_l([Bin|Cont0], Needle) when is_binary(Bin) ->
+ case bin_search_str(Bin, 0, Cont0, Needle) of
+ {nomatch, _, Cont} ->
+ find_l(Cont, Needle);
+ {_Before, Cs, _After} ->
+ Cs
+ end;
+find_l(Cs0, [C|_]=Needle) when is_list(Cs0) ->
+ case unicode_util:cp(Cs0) of
+ [C|Cs] ->
+ case prefix_1(Cs0, Needle) of
+ nomatch -> find_l(Cs, Needle);
+ _ -> Cs0
+ end;
+ [_C|Cs] ->
+ find_l(Cs, Needle);
+ [] -> nomatch
+ end;
+find_l(Bin, Needle) ->
+ case bin_search_str(Bin, 0, [], Needle) of
+ {nomatch,_,_} -> nomatch;
+ {_Before, [Cs], _After} -> Cs
+ end.
+
+find_r([Bin|Cont0], Needle, Res) when is_binary(Bin) ->
+ case bin_search_str(Bin, 0, Cont0, Needle) of
+ {nomatch,_,Cont} ->
+ find_r(Cont, Needle, Res);
+ {_, Cs0, _} ->
+ [_|Cs] = unicode_util:gc(Cs0),
+ find_r(Cs, Needle, Cs0)
+ end;
+find_r(Cs0, [C|_]=Needle, Res) when is_list(Cs0) ->
+ case unicode_util:cp(Cs0) of
+ [C|Cs] ->
+ case prefix_1(Cs0, Needle) of
+ nomatch -> find_r(Cs, Needle, Res);
+ _ -> find_r(Cs, Needle, Cs0)
+ end;
+ [_C|Cs] ->
+ find_r(Cs, Needle, Res);
+ [] -> Res
+ end;
+find_r(Bin, Needle, Res) ->
+ case bin_search_str(Bin, 0, [], Needle) of
+ {nomatch,_,_} -> Res;
+ {_Before, [Cs0], _After} ->
+ <<_/utf8, Cs/binary>> = Cs0,
+ find_r(Cs, Needle, Cs0)
+ end.
+
+%% These are used to avoid creating lists around binaries
+%% might be unnecessary, is there a better solution?
+btoken(Token, []) -> Token;
+btoken(BinPart, [C]) when is_integer(C) -> <<C/utf8, BinPart/binary>>;
+btoken(<<>>, Tkn) -> lists:reverse(Tkn);
+btoken(BinPart, Cs) -> [lists:reverse(Cs),BinPart].
+
+rev([B]) when is_binary(B) -> B;
+rev(L) when is_list(L) -> lists:reverse(L);
+rev(C) when is_integer(C) -> C.
+
+append(Char, <<>>) when is_integer(Char) -> [Char];
+append(Char, <<>>) when is_list(Char) -> Char;
+append(Char, Bin) when is_binary(Bin) -> [Char,Bin];
+append(Char, Str) when is_integer(Char) -> [Char|Str];
+append(GC, Str) when is_list(GC) -> GC ++ Str.
+
+stack(Bin, []) -> Bin;
+stack(<<>>, St) -> St;
+stack([], St) -> St;
+stack(Bin, St) -> [Bin|St].
+
+add_non_empty(<<>>, L) -> L;
+add_non_empty(Token, L) -> [Token|L].
+
+cp_prefix(Orig, Cont) ->
+ case unicode_util:cp(Cont) of
+ [] -> Orig;
+ [Cp|Rest] -> cp_prefix_1(Orig, Cp, Rest)
+ end.
+
+cp_prefix_1(Orig, Until, Cont) ->
+ case unicode_util:cp(Orig) of
+ [Until|Rest] ->
+ case equal(Rest, Cont) of
+ true -> [];
+ false-> [Until|cp_prefix_1(Rest, Until, Cont)]
+ end;
+ [CP|Rest] -> [CP|cp_prefix_1(Rest, Until, Cont)]
+ end.
+
+
+%% Binary special
+bin_search(Bin, Seps) ->
+ bin_search(Bin, [], Seps).
+
+bin_search(_Bin, Cont, {[],_,_}) ->
+ {nomatch, Cont};
+bin_search(Bin, Cont, {Seps,_,BP}) ->
+ bin_search_loop(Bin, 0, BP, Cont, Seps).
+
+%% Need to work with [<<$a>>, <<778/utf8>>],
+%% i.e. å in nfd form $a "COMBINING RING ABOVE"
+%% and PREPEND characters like "ARABIC NUMBER SIGN" 1536 <<216,128>>
+%% combined with other characters are currently ignored.
+search_pattern(Seps) ->
+ CPs = search_cp(Seps),
+ Bin = bin_pattern(CPs),
+ {Seps, CPs, Bin}.
+
+search_cp([CP|Seps]) when is_integer(CP) ->
+ [CP|search_cp(Seps)];
+search_cp([Pattern|Seps]) ->
+ [CP|_] = unicode_util:cp(Pattern),
+ [CP|search_cp(Seps)];
+search_cp([]) -> [].
+
+bin_pattern([CP|Seps]) ->
+ [<<CP/utf8>>|bin_pattern(Seps)];
+bin_pattern([]) -> [].
+
+bin_search_loop(Bin0, Start, _, Cont, _Seps)
+ when byte_size(Bin0) =< Start; Start < 0 ->
+ {nomatch, Cont};
+bin_search_loop(Bin0, Start, BinSeps, Cont, Seps) ->
+ <<_:Start/binary, Bin/binary>> = Bin0,
+ case binary:match(Bin, BinSeps) of
+ nomatch ->
+ {nomatch,Cont};
+ {Where, _CL} ->
+ <<_:Where/binary, Cont0/binary>> = Bin,
+ Cont1 = stack(Cont0, Cont),
+ [GC|Cont2] = unicode_util:gc(Cont1),
+ case lists:member(GC, Seps) of
+ false ->
+ case Cont2 of
+ [BinR|Cont] when is_binary(BinR) ->
+ Next = byte_size(Bin0) - byte_size(BinR),
+ bin_search_loop(Bin0, Next, BinSeps, Cont, Seps);
+ BinR when is_binary(BinR), Cont =:= [] ->
+ Next = byte_size(Bin0) - byte_size(BinR),
+ bin_search_loop(Bin0, Next, BinSeps, Cont, Seps);
+ _ ->
+ {nomatch, Cont2}
+ end;
+ true when is_list(Cont1) ->
+ Cont1;
+ true ->
+ [Cont1]
+ end
+ end.
+
+bin_search_inv(Bin, Cont, {[], _, _}) ->
+ [Bin|Cont];
+bin_search_inv(Bin, Cont, {[Sep], _, _}) ->
+ bin_search_inv_1([Bin|Cont], Sep);
+bin_search_inv(Bin, Cont, {Seps, _, _}) ->
+ bin_search_inv_n([Bin|Cont], Seps).
+
+bin_search_inv_1([<<>>|CPs], _) ->
+ {nomatch, CPs};
+bin_search_inv_1(CPs = [Bin0|Cont], Sep) when is_binary(Bin0) ->
+ case unicode_util:gc(CPs) of
+ [Sep|Bin] when is_binary(Bin), Cont =:= [] ->
+ bin_search_inv_1([Bin], Sep);
+ [Sep|[Bin|Cont]=Cs] when is_binary(Bin) ->
+ bin_search_inv_1(Cs, Sep);
+ [Sep|Cs] ->
+ {nomatch, Cs};
+ _ -> CPs
+ end.
+
+bin_search_inv_n([<<>>|CPs], _) ->
+ {nomatch, CPs};
+bin_search_inv_n([Bin0|Cont]=CPs, Seps) when is_binary(Bin0) ->
+ [C|Cs0] = unicode_util:gc(CPs),
+ case {lists:member(C, Seps), Cs0} of
+ {true, Cs} when is_binary(Cs), Cont =:= [] ->
+ bin_search_inv_n([Cs], Seps);
+ {true, [Bin|Cont]=Cs} when is_binary(Bin) ->
+ bin_search_inv_n(Cs, Seps);
+ {true, Cs} -> {nomatch, Cs};
+ {false, _} -> CPs
+ end.
+
+bin_search_str(Bin0, Start, Cont, [CP|_]=SearchCPs) ->
+ <<_:Start/binary, Bin/binary>> = Bin0,
+ case binary:match(Bin, <<CP/utf8>>) of
+ nomatch -> {nomatch, byte_size(Bin0), Cont};
+ {Where0, _} ->
+ Where = Start+Where0,
+ <<Keep:Where/binary, Cs0/binary>> = Bin0,
+ [GC|Cs]=unicode_util:gc(Cs0),
+ case prefix_1(stack(Cs0,Cont), SearchCPs) of
+ nomatch when is_binary(Cs) ->
+ KeepSz = byte_size(Bin0) - byte_size(Cs),
+ bin_search_str(Bin0, KeepSz, Cont, SearchCPs);
+ nomatch ->
+ {nomatch, Where, stack([GC|Cs],Cont)};
+ [] ->
+ {Keep, [Cs0|Cont], <<>>};
+ Rest ->
+ {Keep, [Cs0|Cont], Rest}
+ end
+ end.
+
+
+%%---------------------------------------------------------------------------
+%% OLD lists API kept for backwards compability
+%%---------------------------------------------------------------------------
+
%% Robert's bit
%% len(String)
@@ -68,12 +1347,12 @@ len(S) -> length(S).
%% equal(String1, String2)
%% Test if 2 strings are equal.
--spec equal(String1, String2) -> boolean() when
- String1 :: string(),
- String2 :: string().
+%% -spec equal(String1, String2) -> boolean() when
+%% String1 :: string(),
+%% String2 :: string().
-equal(S, S) -> true;
-equal(_, _) -> false.
+%% equal(S, S) -> true;
+%% equal(_, _) -> false.
%% concat(String1, String2)
%% Concatenate 2 strings.
@@ -127,7 +1406,7 @@ rchr([], _C, _I, L) -> L.
str(S, Sub) when is_list(Sub) -> str(S, Sub, 1).
str([C|S], [C|Sub], I) ->
- case prefix(Sub, S) of
+ case l_prefix(Sub, S) of
true -> I;
false -> str(S, [C|Sub], I+1)
end;
@@ -142,16 +1421,16 @@ str([], _Sub, _I) -> 0.
rstr(S, Sub) when is_list(Sub) -> rstr(S, Sub, 1, 0).
rstr([C|S], [C|Sub], I, L) ->
- case prefix(Sub, S) of
+ case l_prefix(Sub, S) of
true -> rstr(S, [C|Sub], I+1, I);
false -> rstr(S, [C|Sub], I+1, L)
end;
rstr([_|S], Sub, I, L) -> rstr(S, Sub, I+1, L);
rstr([], _Sub, _I, L) -> L.
-prefix([C|Pre], [C|String]) -> prefix(Pre, String);
-prefix([], String) when is_list(String) -> true;
-prefix(Pre, String) when is_list(Pre), is_list(String) -> false.
+l_prefix([C|Pre], [C|String]) -> l_prefix(Pre, String);
+l_prefix([], String) when is_list(String) -> true;
+l_prefix(Pre, String) when is_list(Pre), is_list(String) -> false.
%% span(String, Chars) -> Length.
%% cspan(String, Chars) -> Length.
@@ -229,9 +1508,9 @@ tokens(S, Seps) ->
[_|_] -> [S]
end;
[C] ->
- tokens_single_1(reverse(S), C, []);
+ tokens_single_1(lists:reverse(S), C, []);
[_|_] ->
- tokens_multiple_1(reverse(S), Seps, [])
+ tokens_multiple_1(lists:reverse(S), Seps, [])
end.
tokens_single_1([Sep|S], Sep, Toks) ->
@@ -342,8 +1621,8 @@ sub_word(String, Index, Char) when is_integer(Index), is_integer(Char) ->
s_word(strip(String, left, Char), Index, Char, 1, [])
end.
-s_word([], _, _, _,Res) -> reverse(Res);
-s_word([Char|_],Index,Char,Index,Res) -> reverse(Res);
+s_word([], _, _, _,Res) -> lists:reverse(Res);
+s_word([Char|_],Index,Char,Index,Res) -> lists:reverse(Res);
s_word([H|T],Index,Char,Index,Res) -> s_word(T,Index,Char,Index,[H|Res]);
s_word([Char|T],Stop,Char,Index,Res) when Index < Stop ->
s_word(strip(T,left,Char),Stop,Char,Index+1,Res);
@@ -359,7 +1638,7 @@ strip(String) -> strip(String, both).
-spec strip(String, Direction) -> Stripped when
String :: string(),
Stripped :: string(),
- Direction :: left | right | both.
+ Direction :: 'left' | 'right' | 'both'.
strip(String, left) -> strip_left(String, $\s);
strip(String, right) -> strip_right(String, $\s);
@@ -369,7 +1648,7 @@ strip(String, both) ->
-spec strip(String, Direction, Character) -> Stripped when
String :: string(),
Stripped :: string(),
- Direction :: left | right | both,
+ Direction :: 'left' | 'right' | 'both',
Character :: char().
strip(String, right, Char) -> strip_right(String, Char);
diff --git a/lib/stdlib/src/unicode.erl b/lib/stdlib/src/unicode.erl
index 617da11ba8..59499021cb 100644
--- a/lib/stdlib/src/unicode.erl
+++ b/lib/stdlib/src/unicode.erl
@@ -1,8 +1,8 @@
%%
%% %CopyrightBegin%
-%%
+%%
%% Copyright Ericsson AB 2008-2016. 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
@@ -14,7 +14,7 @@
%% 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%
%%
-module(unicode).
@@ -22,7 +22,12 @@
-export([characters_to_list/1, characters_to_list_int/2,
characters_to_binary/1, characters_to_binary_int/2,
characters_to_binary/3,
- bom_to_encoding/1, encoding_to_bom/1]).
+ bom_to_encoding/1, encoding_to_bom/1,
+ characters_to_nfd_list/1, characters_to_nfd_binary/1,
+ characters_to_nfc_list/1, characters_to_nfc_binary/1,
+ characters_to_nfkd_list/1, characters_to_nfkd_binary/1,
+ characters_to_nfkc_list/1, characters_to_nfkc_binary/1
+ ]).
-export_type([chardata/0, charlist/0, encoding/0, external_chardata/0,
external_charlist/0, latin1_char/0, latin1_chardata/0,
@@ -102,35 +107,6 @@ characters_to_list(_, _) ->
characters_to_list(ML) ->
unicode:characters_to_list(ML,unicode).
-characters_to_list_int(ML, Encoding) ->
- try
- do_characters_to_list(ML,Encoding)
- catch
- error:AnyError ->
- TheError = case AnyError of
- system_limit ->
- system_limit;
- _ ->
- badarg
- end,
- {'EXIT',{new_stacktrace,[{Mod,_,L,_}|Rest]}} =
- (catch erlang:error(new_stacktrace,
- [ML,Encoding])),
- erlang:raise(error,TheError,[{Mod,characters_to_list,L}|Rest])
- end.
-
-% XXX: Optimize me!
-do_characters_to_list(ML, Encoding) ->
- case unicode:characters_to_binary(ML,Encoding) of
- Bin when is_binary(Bin) ->
- unicode:characters_to_list(Bin,utf8);
- {error,Encoded,Rest} ->
- {error,unicode:characters_to_list(Encoded,utf8),Rest};
- {incomplete, Encoded2, Rest2} ->
- {incomplete,unicode:characters_to_list(Encoded2,utf8),Rest2}
- end.
-
-
-spec characters_to_binary(Data) -> Result when
Data :: latin1_chardata() | chardata() | external_chardata(),
Result :: binary()
@@ -154,24 +130,6 @@ characters_to_binary(ML) ->
[ML])),
erlang:raise(error,TheError,[{Mod,characters_to_binary,L}|Rest])
end.
-
-
-characters_to_binary_int(ML,InEncoding) ->
- try
- characters_to_binary_int(ML,InEncoding,unicode)
- catch
- error:AnyError ->
- TheError = case AnyError of
- system_limit ->
- system_limit;
- _ ->
- badarg
- end,
- {'EXIT',{new_stacktrace,[{Mod,_,L,_}|Rest]}} =
- (catch erlang:error(new_stacktrace,
- [ML,InEncoding])),
- erlang:raise(error,TheError,[{Mod,characters_to_binary,L}|Rest])
- end.
-spec characters_to_binary(Data, InEncoding, OutEncoding) -> Result when
Data :: latin1_chardata() | chardata() | external_chardata(),
@@ -192,7 +150,7 @@ characters_to_binary(ML, latin1, Uni) when is_binary(ML) and ((Uni =:= utf8) or
try
characters_to_binary_int(ML,latin1,utf8)
catch
- error:AnyError ->
+ error:AnyError ->
TheError = case AnyError of
system_limit ->
system_limit;
@@ -228,7 +186,7 @@ characters_to_binary(ML,Uni,latin1) when is_binary(ML) and ((Uni =:= utf8) or
[{Mod,characters_to_binary,L}|Rest])
end
end;
-
+
characters_to_binary(ML, InEncoding, OutEncoding) ->
try
characters_to_binary_int(ML,InEncoding,OutEncoding)
@@ -246,53 +204,6 @@ characters_to_binary(ML, InEncoding, OutEncoding) ->
erlang:raise(error,TheError,[{Mod,characters_to_binary,L}|Rest])
end.
-characters_to_binary_int(ML, InEncoding, OutEncoding) when
- InEncoding =:= latin1, OutEncoding =:= unicode;
- InEncoding =:= latin1, OutEncoding =:= utf8;
- InEncoding =:= unicode, OutEncoding =:= unicode;
- InEncoding =:= unicode, OutEncoding =:= utf8;
- InEncoding =:= utf8, OutEncoding =:= unicode;
- InEncoding =:= utf8, OutEncoding =:= utf8 ->
- unicode:characters_to_binary(ML,InEncoding);
-
-characters_to_binary_int(ML, InEncoding, OutEncoding) ->
- {InTrans,Limit} = case OutEncoding of
- latin1 -> {i_trans_chk(InEncoding),255};
- _ -> {i_trans(InEncoding),case InEncoding of latin1 -> 255; _ -> 16#10FFFF end}
- end,
- OutTrans = o_trans(OutEncoding),
- Res =
- ml_map(ML,
- fun(Part,Accum) when is_binary(Part) ->
- case InTrans(Part) of
- List when is_list(List) ->
- Tail = OutTrans(List),
- <<Accum/binary, Tail/binary>>;
- {error, Translated, Rest} ->
- Tail = OutTrans(Translated),
- {error, <<Accum/binary,Tail/binary>>, Rest};
- {incomplete, Translated, Rest, Missing} ->
- Tail = OutTrans(Translated),
- {incomplete, <<Accum/binary,Tail/binary>>, Rest,
- Missing}
- end;
- (Part, Accum) when is_integer(Part), Part =< Limit ->
- case OutTrans([Part]) of
- Binary when is_binary(Binary) ->
- <<Accum/binary, Binary/binary>>;
- {error, _, [Part]} ->
- {error,Accum,[Part]}
- end;
- (Part, Accum) ->
- {error, Accum, [Part]}
- end,<<>>),
- case Res of
- {incomplete,A,B,_} ->
- {incomplete,A,B};
- _ ->
- Res
- end.
-
-spec bom_to_encoding(Bin) -> {Encoding, Length} when
Bin :: binary(),
Encoding :: 'latin1' | 'utf8'
@@ -335,11 +246,194 @@ encoding_to_bom({utf32,little}) ->
<<255,254,0,0>>;
encoding_to_bom(latin1) ->
<<>>.
-
-cbv(utf8,<<1:1,1:1,0:1,_:5>>) ->
+-define(GC_N, 200). %% arbitrary number
+
+%% Canonical decompose string to list of chars
+-spec characters_to_nfd_list(chardata()) -> [char()].
+characters_to_nfd_list(CD) ->
+ case unicode_util:nfd(CD) of
+ [GC|Str] when is_list(GC) -> GC++characters_to_nfd_list(Str);
+ [CP|Str] -> [CP|characters_to_nfd_list(Str)];
+ [] -> []
+ end.
+
+-spec characters_to_nfd_binary(chardata()) -> unicode_binary().
+characters_to_nfd_binary(CD) ->
+ list_to_binary(characters_to_nfd_binary(CD, ?GC_N, [])).
+
+characters_to_nfd_binary(CD, N, Row) when N > 0 ->
+ case unicode_util:nfd(CD) of
+ [GC|Str] -> characters_to_nfd_binary(Str, N-1, [GC|Row]);
+ [] -> [characters_to_binary(lists:reverse(Row))]
+ end;
+characters_to_nfd_binary(CD, _, Row) ->
+ [characters_to_binary(lists:reverse(Row))|characters_to_nfd_binary(CD,?GC_N,[])].
+
+%% Compability Canonical decompose string to list of chars.
+-spec characters_to_nfkd_list(chardata()) -> [char()].
+characters_to_nfkd_list(CD) ->
+ case unicode_util:nfkd(CD) of
+ [GC|Str] when is_list(GC) -> GC++characters_to_nfkd_list(Str);
+ [CP|Str] -> [CP|characters_to_nfkd_list(Str)];
+ [] -> []
+ end.
+
+-spec characters_to_nfkd_binary(chardata()) -> unicode_binary().
+characters_to_nfkd_binary(CD) ->
+ list_to_binary(characters_to_nfkd_binary(CD, ?GC_N, [])).
+
+characters_to_nfkd_binary(CD, N, Row) when N > 0 ->
+ case unicode_util:nfkd(CD) of
+ [GC|Str] -> characters_to_nfkd_binary(Str, N-1, [GC|Row]);
+ [] -> [characters_to_binary(lists:reverse(Row))]
+ end;
+characters_to_nfkd_binary(CD, _, Row) ->
+ [characters_to_binary(lists:reverse(Row))|characters_to_nfkd_binary(CD,?GC_N,[])].
+
+
+%% Canonical compose string to list of chars
+-spec characters_to_nfc_list(chardata()) -> [char()].
+characters_to_nfc_list(CD) ->
+ case unicode_util:nfc(CD) of
+ [CPs|Str] when is_list(CPs) -> CPs ++ characters_to_nfc_list(Str);
+ [CP|Str] -> [CP|characters_to_nfc_list(Str)];
+ [] -> []
+ end.
+
+-spec characters_to_nfc_binary(chardata()) -> unicode_binary().
+characters_to_nfc_binary(CD) ->
+ list_to_binary(characters_to_nfc_binary(CD, ?GC_N, [])).
+
+characters_to_nfc_binary(CD, N, Row) when N > 0 ->
+ case unicode_util:nfc(CD) of
+ [GC|Str] -> characters_to_nfc_binary(Str, N-1, [GC|Row]);
+ [] -> [characters_to_binary(lists:reverse(Row))]
+ end;
+characters_to_nfc_binary(CD, _, Row) ->
+ [characters_to_binary(lists:reverse(Row))|characters_to_nfc_binary(CD,?GC_N,[])].
+
+%% Compability Canonical compose string to list of chars
+-spec characters_to_nfkc_list(chardata()) -> [char()].
+characters_to_nfkc_list(CD) ->
+ case unicode_util:nfkc(CD) of
+ [CPs|Str] when is_list(CPs) -> CPs ++ characters_to_nfkc_list(Str);
+ [CP|Str] -> [CP|characters_to_nfkc_list(Str)];
+ [] -> []
+ end.
+
+-spec characters_to_nfkc_binary(chardata()) -> unicode_binary().
+characters_to_nfkc_binary(CD) ->
+ list_to_binary(characters_to_nfkc_binary(CD, ?GC_N, [])).
+
+characters_to_nfkc_binary(CD, N, Row) when N > 0 ->
+ case unicode_util:nfkc(CD) of
+ [GC|Str] -> characters_to_nfkc_binary(Str, N-1, [GC|Row]);
+ [] -> [characters_to_binary(lists:reverse(Row))]
+ end;
+characters_to_nfkc_binary(CD, _, Row) ->
+ [characters_to_binary(lists:reverse(Row))|characters_to_nfkc_binary(CD,?GC_N,[])].
+
+%% internals
+
+characters_to_list_int(ML, Encoding) ->
+ try
+ do_characters_to_list(ML,Encoding)
+ catch
+ error:AnyError ->
+ TheError = case AnyError of
+ system_limit ->
+ system_limit;
+ _ ->
+ badarg
+ end,
+ {'EXIT',{new_stacktrace,[{Mod,_,L,_}|Rest]}} =
+ (catch erlang:error(new_stacktrace,
+ [ML,Encoding])),
+ erlang:raise(error,TheError,[{Mod,characters_to_list,L}|Rest])
+ end.
+
+ % XXX: Optimize me!
+do_characters_to_list(ML, Encoding) ->
+ case unicode:characters_to_binary(ML,Encoding) of
+ Bin when is_binary(Bin) ->
+ unicode:characters_to_list(Bin,utf8);
+ {error,Encoded,Rest} ->
+ {error,unicode:characters_to_list(Encoded,utf8),Rest};
+ {incomplete, Encoded2, Rest2} ->
+ {incomplete,unicode:characters_to_list(Encoded2,utf8),Rest2}
+ end.
+
+
+characters_to_binary_int(ML,InEncoding) ->
+ try
+ characters_to_binary_int(ML,InEncoding,unicode)
+ catch
+ error:AnyError ->
+ TheError = case AnyError of
+ system_limit ->
+ system_limit;
+ _ ->
+ badarg
+ end,
+ {'EXIT',{new_stacktrace,[{Mod,_,L,_}|Rest]}} =
+ (catch erlang:error(new_stacktrace,
+ [ML,InEncoding])),
+ erlang:raise(error,TheError,[{Mod,characters_to_binary,L}|Rest])
+ end.
+
+
+characters_to_binary_int(ML, InEncoding, OutEncoding) when
+ InEncoding =:= latin1, OutEncoding =:= unicode;
+ InEncoding =:= latin1, OutEncoding =:= utf8;
+ InEncoding =:= unicode, OutEncoding =:= unicode;
+ InEncoding =:= unicode, OutEncoding =:= utf8;
+ InEncoding =:= utf8, OutEncoding =:= unicode;
+ InEncoding =:= utf8, OutEncoding =:= utf8 ->
+ unicode:characters_to_binary(ML,InEncoding);
+
+characters_to_binary_int(ML, InEncoding, OutEncoding) ->
+ {InTrans,Limit} = case OutEncoding of
+ latin1 -> {i_trans_chk(InEncoding),255};
+ _ -> {i_trans(InEncoding),case InEncoding of latin1 -> 255; _ -> 16#10FFFF end}
+ end,
+ OutTrans = o_trans(OutEncoding),
+ Res =
+ ml_map(ML,
+ fun(Part,Accum) when is_binary(Part) ->
+ case InTrans(Part) of
+ List when is_list(List) ->
+ Tail = OutTrans(List),
+ <<Accum/binary, Tail/binary>>;
+ {error, Translated, Rest} ->
+ Tail = OutTrans(Translated),
+ {error, <<Accum/binary,Tail/binary>>, Rest};
+ {incomplete, Translated, Rest, Missing} ->
+ Tail = OutTrans(Translated),
+ {incomplete, <<Accum/binary,Tail/binary>>, Rest,
+ Missing}
+ end;
+ (Part, Accum) when is_integer(Part), Part =< Limit ->
+ case OutTrans([Part]) of
+ Binary when is_binary(Binary) ->
+ <<Accum/binary, Binary/binary>>;
+ {error, _, [Part]} ->
+ {error,Accum,[Part]}
+ end;
+ (Part, Accum) ->
+ {error, Accum, [Part]}
+ end,<<>>),
+ case Res of
+ {incomplete,A,B,_} ->
+ {incomplete,A,B};
+ _ ->
+ Res
+ end.
+
+
+cbv(utf8,<<1:1,1:1,0:1,_:5>>) ->
1;
-cbv(utf8,<<1:1,1:1,1:1,0:1,_:4,R/binary>>) ->
+cbv(utf8,<<1:1,1:1,1:1,0:1,_:4,R/binary>>) ->
case R of
<<>> ->
2;
@@ -386,18 +480,18 @@ cbv({utf32,big}, <<0:8>>) ->
3;
cbv({utf32,big}, <<0:8,X:8>>) when X =< 16 ->
2;
-cbv({utf32,big}, <<0:8,X:8,Y:8>>)
+cbv({utf32,big}, <<0:8,X:8,Y:8>>)
when X =< 16, ((X > 0) or ((Y =< 215) or (Y >= 224))) ->
1;
cbv({utf32,big},_) ->
false;
cbv({utf32,little},<<_:8>>) ->
3;
-cbv({utf32,little},<<_:8,_:8>>) ->
+cbv({utf32,little},<<_:8,_:8>>) ->
2;
cbv({utf32,little},<<X:8,255:8,0:8>>) when X =:= 254; X =:= 255 ->
false;
-cbv({utf32,little},<<_:8,Y:8,X:8>>)
+cbv({utf32,little},<<_:8,Y:8,X:8>>)
when X =< 16, ((X > 0) or ((Y =< 215) or (Y >= 224))) ->
1;
cbv({utf32,little},_) ->
@@ -417,8 +511,8 @@ ml_map([Part|T],Fun,Accum) when is_integer(Part) ->
Bin2 when is_binary(Bin2) ->
Bin2;
{error, Converted, Rest} ->
- {error, Converted, Rest};
- {incomplete, Converted, Rest,X} ->
+ {error, Converted, Rest};
+ {incomplete, Converted, Rest,X} ->
{incomplete, Converted, Rest,X}
end;
% Can not be incomplete - it's an integer
@@ -471,7 +565,7 @@ ml_map(Part,Fun,Accum) when is_binary(Part), byte_size(Part) > 8192 ->
ml_map(Bin,Fun,Accum) when is_binary(Bin) ->
Fun(Bin,Accum).
-
+
@@ -523,7 +617,7 @@ o_trans(utf8) ->
<<One/utf8>>
end, L)
end;
-
+
o_trans(utf16) ->
fun(L) ->
do_o_binary(fun(One) ->
@@ -577,9 +671,9 @@ do_o_binary2(F,[H|T]) ->
[Bin|Bin3]
end
end.
-
+
%% Specific functions only allowing codepoints in latin1 range
-
+
do_i_utf8_chk(<<>>) ->
[];
do_i_utf8_chk(<<U/utf8,R/binary>>) when U =< 255 ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 00:12:44 +0000