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-rw-r--r--lib/stdlib/src/io.erl195
1 files changed, 143 insertions, 52 deletions
diff --git a/lib/stdlib/src/io.erl b/lib/stdlib/src/io.erl
index 6aeb076a0b..9f65bbfa3a 100644
--- a/lib/stdlib/src/io.erl
+++ b/lib/stdlib/src/io.erl
@@ -41,6 +41,7 @@
-type error_description() :: term(). % Whatever the io-server sends.
-type request_error() :: {'error',error_description()}.
+
%% XXX: Some uses of line() in this file may need to read erl_scan:location()
-type line() :: pos_integer().
@@ -66,12 +67,15 @@ o_request(Io, Request, Func) ->
end.
%% Put chars takes mixed *unicode* list from R13 onwards.
--spec put_chars(iodata()) -> 'ok'.
+-spec put_chars(CharData) -> 'ok' when
+ CharData :: unicode:chardata().
put_chars(Chars) ->
put_chars(default_output(), Chars).
--spec put_chars(device(), iodata()) -> 'ok'.
+-spec put_chars(IoDevice, IoData) -> 'ok' when
+ IoDevice :: device(),
+ IoData :: unicode:chardata().
put_chars(Io, Chars) ->
o_request(Io, {put_chars,unicode,Chars}, put_chars).
@@ -81,7 +85,8 @@ put_chars(Io, Chars) ->
nl() ->
nl(default_output()).
--spec nl(device()) -> 'ok'.
+-spec nl(IoDevice) -> 'ok' when
+ IoDevice :: device().
nl(Io) ->
% o_request(Io, {put_chars,io_lib:nl()}).
@@ -92,7 +97,8 @@ nl(Io) ->
columns() ->
columns(default_output()).
--spec columns(device()) -> {'ok', pos_integer()} | {'error', 'enotsup'}.
+-spec columns(IoDevice) -> {'ok', pos_integer()} | {'error', 'enotsup'} when
+ IoDevice :: device().
columns(Io) ->
case request(Io, {get_geometry,columns}) of
@@ -107,7 +113,8 @@ columns(Io) ->
rows() ->
rows(default_output()).
--spec rows(device()) -> {'ok', pos_integer()} | {'error', 'enotsup'}.
+-spec rows(IoDevice) -> {'ok', pos_integer()} | {'error', 'enotsup'} when
+ IoDevice :: device().
rows(Io) ->
case request(Io,{get_geometry,rows}) of
@@ -117,22 +124,36 @@ rows(Io) ->
{error,enotsup}
end.
--spec get_chars(prompt(), non_neg_integer()) -> iodata() | 'eof'.
+-spec get_chars(Prompt, Count) -> Data | 'eof' when
+ Prompt :: prompt(),
+ Count :: non_neg_integer(),
+ Data :: [unicode:unicode_char()] | unicode:unicode_binary().
get_chars(Prompt, N) ->
get_chars(default_input(), Prompt, N).
--spec get_chars(device(), prompt(), non_neg_integer()) -> iodata() | 'eof'.
+-spec get_chars(IoDevice, Prompt, Count) -> Data | 'eof' | {error, Reason} when
+ IoDevice :: device(),
+ Prompt :: prompt(),
+ Count :: non_neg_integer(),
+ Reason :: term(),
+ Data :: [unicode:unicode_char()] | unicode:unicode_binary().
get_chars(Io, Prompt, N) when is_integer(N), N >= 0 ->
request(Io, {get_chars,unicode,Prompt,N}).
--spec get_line(prompt()) -> iodata() | 'eof' | {'error', term()}.
+-spec get_line(Prompt) -> Data | 'eof' | {'error', Reason} when
+ Prompt :: prompt(),
+ Reason :: term(),
+ Data :: [unicode:unicode_char()] | unicode:unicode_binary().
get_line(Prompt) ->
get_line(default_input(), Prompt).
--spec get_line(device(), prompt()) -> iodata() | 'eof' | {'error', term()}.
+-spec get_line(IoDevice, Prompt) -> Data | 'eof' | {'error', term()} when
+ IoDevice :: device(),
+ Prompt :: prompt(),
+ Data :: [unicode:unicode_char()] | unicode:unicode_binary().
get_line(Io, Prompt) ->
request(Io, {get_line,unicode,Prompt}).
@@ -156,46 +177,62 @@ get_password(Io) ->
getopts() ->
getopts(default_input()).
--spec getopts(device()) -> [opt_pair()].
+-spec getopts(IoDevice) -> [opt_pair()] when
+ IoDevice :: device().
getopts(Io) ->
request(Io, getopts).
-type setopt() :: 'binary' | 'list' | opt_pair().
--spec setopts([setopt()]) -> 'ok' | {'error', term()}.
+-spec setopts(Opts) -> 'ok' | {'error', Reason} when
+ Opts :: [setopt()],
+ Reason :: term().
setopts(Opts) ->
setopts(default_input(), Opts).
--spec setopts(device(), [setopt()]) -> 'ok' | {'error', term()}.
+-spec setopts(IoDevice, Opts) -> 'ok' | {'error', Reason} when
+ IoDevice :: device(),
+ Opts :: [setopt()],
+ Reason :: term().
setopts(Io, Opts) ->
request(Io, {setopts, Opts}).
%% Writing and reading Erlang terms.
--spec write(term()) -> 'ok'.
+-spec write(Term) -> 'ok' when
+ Term :: term().
write(Term) ->
write(default_output(), Term).
--spec write(device(), term()) -> 'ok'.
+-spec write(IoDevice, Term) -> 'ok' when
+ IoDevice :: device(),
+ Term :: term().
write(Io, Term) ->
o_request(Io, {write,Term}, write).
--spec read(prompt()) ->
- {'ok', term()} | 'eof' | {'error', erl_scan:error_info()}.
+-spec read(Prompt) -> Result when
+ Prompt :: prompt(),
+ Result :: {'ok', Term :: term()}
+ | 'eof'
+ | {'error', ErrorInfo :: erl_scan:error_info()}.
% Read does not use get_until as erl_scan does not work with unicode
% XXX:PaN fixme?
read(Prompt) ->
read(default_input(), Prompt).
--spec read(device(), prompt()) ->
- {'ok', term()} | 'eof' | {'error', erl_scan:error_info()}.
+-spec read(IoDevice, Prompt) -> Result when
+ IoDevice :: device(),
+ Prompt :: prompt(),
+ Result :: {'ok', Term :: term()}
+ | 'eof'
+ | {'error', ErrorInfo :: erl_scan:error_info()}.
read(Io, Prompt) ->
case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[1]}) of
@@ -211,9 +248,13 @@ read(Io, Prompt) ->
Other
end.
--spec read(device(), prompt(), line()) ->
- {'ok', term(), line()} | {'eof', line()} |
- {'error', erl_scan:error_info(), line()}.
+-spec read(IoDevice, Prompt, StartLine) -> Result when
+ IoDevice :: device(),
+ Prompt :: prompt(),
+ StartLine :: line(),
+ Result :: {'ok', Term :: term(), EndLine :: line()}
+ | {'eof', EndLine :: line()}
+ | {'error', ErrorInfo :: erl_scan:error_info(), ErrorLine :: line()}.
read(Io, Prompt, StartLine) when is_integer(StartLine) ->
case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[StartLine]}) of
@@ -239,28 +280,40 @@ conv_reason(_, _Reason) -> badarg.
-type format() :: atom() | string() | binary().
--spec fwrite(format()) -> 'ok'.
+-spec fwrite(Format) -> 'ok' when
+ Format :: format().
fwrite(Format) ->
format(Format).
--spec fwrite(format(), [term()]) -> 'ok'.
+-spec fwrite(Format, Data) -> 'ok' when
+ Format :: format(),
+ Data :: [term()].
fwrite(Format, Args) ->
format(Format, Args).
--spec fwrite(device(), format(), [term()]) -> 'ok'.
+-spec fwrite(IoDevice, Format, Data) -> 'ok' when
+ IoDevice :: device(),
+ Format :: format(),
+ Data :: [term()].
fwrite(Io, Format, Args) ->
format(Io, Format, Args).
--spec fread(prompt(), format()) -> {'ok', [term()]} | 'eof' | {'error',term()}.
+-spec fread(Prompt, Format) -> Result when
+ Prompt :: prompt(),
+ Format :: format(),
+ Result :: {'ok', Terms :: [term()]} | 'eof' | {'error', What :: term()}.
fread(Prompt, Format) ->
fread(default_input(), Prompt, Format).
--spec fread(device(), prompt(), format()) ->
- {'ok', [term()]} | 'eof' | {'error',term()}.
+-spec fread(IoDevice, Prompt, Format) -> Result when
+ IoDevice :: device(),
+ Prompt :: prompt(),
+ Format :: format(),
+ Result :: {'ok', Terms :: [term()]} | 'eof' | {'error', What :: term()}.
fread(Io, Prompt, Format) ->
case request(Io, {fread,Prompt,Format}) of
@@ -270,73 +323,104 @@ fread(Io, Prompt, Format) ->
Other
end.
--spec format(format()) -> 'ok'.
+-spec format(Format) -> 'ok' when
+ Format :: format().
format(Format) ->
format(Format, []).
--spec format(format(), [term()]) -> 'ok'.
+-spec format(Format, Data) -> 'ok' when
+ Format :: format(),
+ Data :: [term()].
format(Format, Args) ->
format(default_output(), Format, Args).
--spec format(device(), format(), [term()]) -> 'ok'.
+-spec format(IoDevice, Format, Data) -> 'ok' when
+ IoDevice :: device(),
+ Format :: format(),
+ Data :: [term()].
format(Io, Format, Args) ->
o_request(Io, {format,Format,Args}, format).
%% Scanning Erlang code.
--spec scan_erl_exprs(prompt()) -> erl_scan:tokens_result() | request_error().
+-spec scan_erl_exprs(Prompt) -> Result when
+ Prompt :: prompt(),
+ Result :: erl_scan:tokens_result() | request_error().
scan_erl_exprs(Prompt) ->
scan_erl_exprs(default_input(), Prompt, 1).
--spec scan_erl_exprs(device(), prompt()) -> erl_scan:tokens_result() | request_error().
+-spec scan_erl_exprs(Device, Prompt) -> Result when
+ Device :: device(),
+ Prompt :: prompt(),
+ Result :: erl_scan:tokens_result() | request_error().
scan_erl_exprs(Io, Prompt) ->
scan_erl_exprs(Io, Prompt, 1).
--spec scan_erl_exprs(device(), prompt(), line()) -> erl_scan:tokens_result() | request_error().
+-spec scan_erl_exprs(Device, Prompt, StartLine) -> Result when
+ Device :: device(),
+ Prompt :: prompt(),
+ StartLine :: line(),
+ Result :: erl_scan:tokens_result() | request_error().
scan_erl_exprs(Io, Prompt, Pos0) ->
request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0]}).
--spec scan_erl_form(prompt()) -> erl_scan:tokens_result() | request_error().
+-spec scan_erl_form(Prompt) -> Result when
+ Prompt :: prompt(),
+ Result :: erl_scan:tokens_result() | request_error().
scan_erl_form(Prompt) ->
scan_erl_form(default_input(), Prompt, 1).
--spec scan_erl_form(device(), prompt()) -> erl_scan:tokens_result() | request_error().
+-spec scan_erl_form(IoDevice, Prompt) -> Result when
+ IoDevice :: device(),
+ Prompt :: prompt(),
+ Result :: erl_scan:tokens_result() | request_error().
scan_erl_form(Io, Prompt) ->
scan_erl_form(Io, Prompt, 1).
--spec scan_erl_form(device(), prompt(), line()) -> erl_scan:tokens_result() | request_error().
+-spec scan_erl_form(IoDevice, Prompt, StartLine) -> Result when
+ IoDevice :: device(),
+ Prompt :: prompt(),
+ StartLine :: line(),
+ Result :: erl_scan:tokens_result() | request_error().
scan_erl_form(Io, Prompt, Pos0) ->
request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0]}).
%% Parsing Erlang code.
--type erl_parse_expr_list() :: [_]. %% XXX: should be imported from erl_parse
-
--type parse_ret() :: {'ok', erl_parse_expr_list(), line()}
- | {'eof', line()}
- | {'error', erl_scan:error_info(), line()}
+-type parse_ret() :: {'ok', ExprList :: erl_parse:abstract_expr(), EndLine :: line()}
+ | {'eof', EndLine :: line()}
+ | {'error', ErrorInfo :: erl_scan:error_info(), ErrorLine :: line()}
| request_error().
--spec parse_erl_exprs(prompt()) -> parse_ret().
+-spec parse_erl_exprs(Prompt) -> Result when
+ Prompt :: prompt(),
+ Result :: parse_ret().
parse_erl_exprs(Prompt) ->
parse_erl_exprs(default_input(), Prompt, 1).
--spec parse_erl_exprs(device(), prompt()) -> parse_ret().
+-spec parse_erl_exprs(IoDevice, Prompt) -> Result when
+ IoDevice :: device(),
+ Prompt :: prompt(),
+ Result :: parse_ret().
parse_erl_exprs(Io, Prompt) ->
parse_erl_exprs(Io, Prompt, 1).
--spec parse_erl_exprs(device(), prompt(), line()) -> parse_ret().
+-spec parse_erl_exprs(IoDevice, Prompt, StartLine) -> Result when
+ IoDevice :: device(),
+ Prompt :: prompt(),
+ StartLine :: line(),
+ Result :: parse_ret().
parse_erl_exprs(Io, Prompt, Pos0) ->
case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0]}) of
@@ -349,24 +433,31 @@ parse_erl_exprs(Io, Prompt, Pos0) ->
Other
end.
--type erl_parse_absform() :: _. %% XXX: should be imported from erl_parse
-
--type parse_form_ret() :: {'ok', erl_parse_absform(), line()}
- | {'eof', line()}
- | {'error', erl_scan:error_info(), line()}
+-type parse_form_ret() :: {'ok', AbsForm :: erl_parse:abstract_form(), EndLine :: line()}
+ | {'eof', EndLine :: line()}
+ | {'error', ErrorInfo :: erl_scan:error_info(), ErrorLine :: line()}
| request_error().
--spec parse_erl_form(prompt()) -> parse_form_ret().
+-spec parse_erl_form(Prompt) -> Result when
+ Prompt :: prompt(),
+ Result :: parse_form_ret().
parse_erl_form(Prompt) ->
parse_erl_form(default_input(), Prompt, 1).
--spec parse_erl_form(device(), prompt()) -> parse_form_ret().
+-spec parse_erl_form(IoDevice, Prompt) -> Result when
+ IoDevice :: device(),
+ Prompt :: prompt(),
+ Result :: parse_form_ret().
parse_erl_form(Io, Prompt) ->
parse_erl_form(Io, Prompt, 1).
--spec parse_erl_form(device(), prompt(), line()) -> parse_form_ret().
+-spec parse_erl_form(IoDevice, Prompt, StartLine) -> Result when
+ IoDevice :: device(),
+ Prompt :: prompt(),
+ StartLine :: line(),
+ Result :: parse_form_ret().
parse_erl_form(Io, Prompt, Pos0) ->
case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0]}) of
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 16:12:14 +0000