diff options
Diffstat (limited to 'lib/stdlib/src/io.erl')
| -rw-r--r-- | lib/stdlib/src/io.erl | 77 |
1 files changed, 66 insertions, 11 deletions
diff --git a/lib/stdlib/src/io.erl b/lib/stdlib/src/io.erl index 9f65bbfa3a..2644083733 100644 --- a/lib/stdlib/src/io.erl +++ b/lib/stdlib/src/io.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2011. All Rights Reserved. +%% Copyright Ericsson AB 1996-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -22,14 +22,15 @@ get_chars/2,get_chars/3,get_line/1,get_line/2, get_password/0, get_password/1, setopts/1, setopts/2, getopts/0, getopts/1]). --export([write/1,write/2,read/1,read/2,read/3]). +-export([write/1,write/2,read/1,read/2,read/3,read/4]). -export([columns/0,columns/1,rows/0,rows/1]). -export([fwrite/1,fwrite/2,fwrite/3,fread/2,fread/3, format/1,format/2,format/3]). --export([scan_erl_exprs/1,scan_erl_exprs/2,scan_erl_exprs/3, - scan_erl_form/1,scan_erl_form/2,scan_erl_form/3, +-export([scan_erl_exprs/1,scan_erl_exprs/2,scan_erl_exprs/3,scan_erl_exprs/4, + scan_erl_form/1,scan_erl_form/2,scan_erl_form/3,scan_erl_form/4, parse_erl_exprs/1,parse_erl_exprs/2,parse_erl_exprs/3, - parse_erl_form/1,parse_erl_form/2,parse_erl_form/3]). + parse_erl_exprs/4,parse_erl_form/1,parse_erl_form/2, + parse_erl_form/3,parse_erl_form/4]). -export([request/1,request/2,requests/1,requests/2]). -export_type([device/0, format/0]). @@ -256,8 +257,21 @@ read(Io, Prompt) -> | {'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 +read(Io, Prompt, Pos0) -> + read(Io, Prompt, Pos0, []). + +-spec read(IoDevice, Prompt, StartLine, Options) -> Result when + IoDevice :: device(), + Prompt :: prompt(), + StartLine :: line(), + Options :: erl_scan:options(), + Result :: {'ok', Term :: term(), EndLine :: line()} + | {'eof', EndLine :: line()} + | {'error', ErrorInfo :: erl_scan:error_info(), ErrorLine :: line()}. + +read(Io, Prompt, Pos0, Options) when is_integer(Pos0), is_list(Options) -> + Args = [Pos0,Options], + case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,Args}) of {ok,Toks,EndLine} -> case erl_parse:parse_term(Toks) of {ok,Term} -> {ok,Term,EndLine}; @@ -368,7 +382,17 @@ scan_erl_exprs(Io, Prompt) -> Result :: erl_scan:tokens_result() | request_error(). scan_erl_exprs(Io, Prompt, Pos0) -> - request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0]}). + scan_erl_exprs(Io, Prompt, Pos0, []). + +-spec scan_erl_exprs(Device, Prompt, StartLine, Options) -> Result when + Device :: device(), + Prompt :: prompt(), + StartLine :: line(), + Options :: erl_scan:options(), + Result :: erl_scan:tokens_result() | request_error(). + +scan_erl_exprs(Io, Prompt, Pos0, Options) -> + request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0,Options]}). -spec scan_erl_form(Prompt) -> Result when Prompt :: prompt(), @@ -392,7 +416,17 @@ scan_erl_form(Io, Prompt) -> Result :: erl_scan:tokens_result() | request_error(). scan_erl_form(Io, Prompt, Pos0) -> - request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0]}). + scan_erl_form(Io, Prompt, Pos0, []). + +-spec scan_erl_form(IoDevice, Prompt, StartLine, Options) -> Result when + IoDevice :: device(), + Prompt :: prompt(), + StartLine :: line(), + Options :: erl_scan:options(), + Result :: erl_scan:tokens_result() | request_error(). + +scan_erl_form(Io, Prompt, Pos0, Options) -> + request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0,Options]}). %% Parsing Erlang code. @@ -423,7 +457,17 @@ parse_erl_exprs(Io, Prompt) -> Result :: parse_ret(). parse_erl_exprs(Io, Prompt, Pos0) -> - case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0]}) of + parse_erl_exprs(Io, Prompt, Pos0, []). + +-spec parse_erl_exprs(IoDevice, Prompt, StartLine, Options) -> Result when + IoDevice :: device(), + Prompt :: prompt(), + StartLine :: line(), + Options :: erl_scan:options(), + Result :: parse_ret(). + +parse_erl_exprs(Io, Prompt, Pos0, Options) -> + case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0,Options]}) of {ok,Toks,EndPos} -> case erl_parse:parse_exprs(Toks) of {ok,Exprs} -> {ok,Exprs,EndPos}; @@ -460,7 +504,18 @@ parse_erl_form(Io, Prompt) -> Result :: parse_form_ret(). parse_erl_form(Io, Prompt, Pos0) -> - case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0]}) of + parse_erl_form(Io, Prompt, Pos0, []). + +-spec parse_erl_form(IoDevice, Prompt, StartLine, Options) -> Result when + IoDevice :: device(), + Prompt :: prompt(), + StartLine :: line(), + Options :: erl_scan:options(), + Result :: parse_form_ret(). + +parse_erl_form(Io, Prompt, Pos0, Options) -> + Args = [Pos0, Options], + case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,Args}) of {ok,Toks,EndPos} -> case erl_parse:parse_form(Toks) of {ok,Exprs} -> {ok,Exprs,EndPos}; |