diff options
Diffstat (limited to 'lib/parsetools/src/leex.erl')
| -rw-r--r-- | lib/parsetools/src/leex.erl | 177 |
1 files changed, 107 insertions, 70 deletions
diff --git a/lib/parsetools/src/leex.erl b/lib/parsetools/src/leex.erl index d0b4b9efe7..cdf20461d9 100644 --- a/lib/parsetools/src/leex.erl +++ b/lib/parsetools/src/leex.erl @@ -35,7 +35,7 @@ -export([compile/3,file/1,file/2,format_error/1]). -import(lists, [member/2,reverse/1,sort/1,delete/2, - keysort/2,keydelete/3,keyfind/3, + keysort/2,keydelete/3, map/2,foldl/3,foreach/2,flatmap/2]). -import(string, [substr/2,substr/3,span/2]). -import(ordsets, [is_element/2,add_element/2,union/2]). @@ -58,7 +58,7 @@ gfile=[], % Graph file module, % Module name opts=[], % Options - posix=false, % POSIX regular expressions + % posix=false, % POSIX regular expressions errors=[], warnings=[] }). @@ -73,12 +73,15 @@ %%% Interface to erl_compile. compile(Input0, Output0, - #options{warning = WarnLevel, verbose=Verbose, includes=Includes}) -> + #options{warning = WarnLevel, verbose=Verbose, includes=Includes, + specific=Specific}) -> Input = assure_extension(shorten_filename(Input0), ".xrl"), Output = assure_extension(shorten_filename(Output0), ".erl"), Includefile = lists:sublist(Includes, 1), + Werror = proplists:get_bool(warnings_as_errors, Specific), Opts = [{scannerfile,Output},{includefile,Includefile},{verbose,Verbose}, - {report_errors,true},{report_warnings,WarnLevel > 0}], + {report_errors,true},{report_warnings,WarnLevel > 0}, + {warnings_as_errors, Werror}], case file(Input, Opts) of {ok, _} -> ok; @@ -107,10 +110,15 @@ file(File, Opts0) -> St = try {ok,REAs,Actions,Code,St2} = parse_file(St1), {DFA,DF} = make_dfa(REAs, St2), - St3 = out_file(St2, DFA, DF, Actions, Code), - case lists:member(dfa_graph, St3#leex.opts) of - true -> out_dfa_graph(St3, DFA, DF); - false -> St3 + case werror(St2) of + false -> + St3 = out_file(St2, DFA, DF, Actions, Code), + case lists:member(dfa_graph, St3#leex.opts) of + true -> out_dfa_graph(St3, DFA, DF); + false -> St3 + end; + true -> + St2 end catch #leex{}=St4 -> St4 @@ -131,8 +139,8 @@ format_error({regexp,E})-> "unterminated " ++ Cs; {illegal_char,Cs} -> "illegal character " ++ Cs; - {posix_cc,What} -> - ["illegal POSIX character class ",io_lib:write_string(What)]; +%% {posix_cc,What} -> +%% ["illegal POSIX character class ",io_lib:write_string(What)]; {char_class,What} -> ["illegal character class ",io_lib:write_string(What)] end, @@ -163,7 +171,8 @@ options(Options0) when is_list(Options0) -> (T) -> [T] end, Options0), options(Options, [scannerfile,includefile,report_errors, - report_warnings,return_errors,return_warnings, + report_warnings,warnings_as_errors, + return_errors,return_warnings, verbose,dfa_graph], []) catch error: _ -> badarg end; @@ -217,6 +226,7 @@ default_option(dfa_graph) -> false; default_option(includefile) -> []; default_option(report_errors) -> true; default_option(report_warnings) -> true; +default_option(warnings_as_errors) -> false; default_option(return_errors) -> false; default_option(return_warnings) -> false; default_option(scannerfile) -> []; @@ -225,6 +235,7 @@ default_option(verbose) -> false. atom_option(dfa_graph) -> {dfa_graph,true}; atom_option(report_errors) -> {report_errors,true}; atom_option(report_warnings) -> {report_warnings,true}; +atom_option(warnings_as_errors) -> {warnings_as_errors,true}; atom_option(return_errors) -> {return_errors,true}; atom_option(return_warnings) -> {return_warnings,true}; atom_option(verbose) -> {verbose,true}; @@ -251,19 +262,29 @@ leex_ret(St) -> report_warnings(St), Es = pack_errors(St#leex.errors), Ws = pack_warnings(St#leex.warnings), + Werror = werror(St), if + Werror -> + do_error_return(St, Es, Ws); Es =:= [] -> case member(return_warnings, St#leex.opts) of true -> {ok, St#leex.efile, Ws}; false -> {ok, St#leex.efile} end; - true -> - case member(return_errors, St#leex.opts) of - true -> {error, Es, Ws}; - false -> error - end + true -> + do_error_return(St, Es, Ws) + end. + +do_error_return(St, Es, Ws) -> + case member(return_errors, St#leex.opts) of + true -> {error, Es, Ws}; + false -> error end. +werror(St) -> + St#leex.warnings =/= [] + andalso member(warnings_as_errors, St#leex.opts). + pack_errors([{File,_} | _] = Es) -> [{File, flatmap(fun({_,E}) -> [E] end, sort(Es))}]; pack_errors([]) -> @@ -286,16 +307,26 @@ report_errors(St) -> end, report_errors, St#leex.opts). report_warnings(St) -> - when_opt(fun () -> - foreach(fun({File,{none,Mod,W}}) -> - io:fwrite("~s: Warning: ~s\n", - [File,Mod:format_error(W)]); - ({File,{Line,Mod,W}}) -> - io:fwrite("~s:~w: Warning: ~s\n", - [File,Line,Mod:format_error(W)]) - end, sort(St#leex.warnings)) - end, report_warnings, St#leex.opts). - + Werror = member(warnings_as_errors, St#leex.opts), + Prefix = case Werror of + true -> ""; + false -> "Warning: " + end, + ReportWerror = Werror andalso member(report_errors, St#leex.opts), + ShouldReport = member(report_warnings, St#leex.opts) orelse ReportWerror, + when_bool(fun () -> + foreach(fun({File,{none,Mod,W}}) -> + io:fwrite("~s: ~s~s\n", + [File,Prefix, + Mod:format_error(W)]); + ({File,{Line,Mod,W}}) -> + io:fwrite("~s:~w: ~s~s\n", + [File,Line,Prefix, + Mod:format_error(W)]) + end, sort(St#leex.warnings)) + end, ShouldReport). + +-spec add_error(_, #leex{}) -> no_return(). add_error(E, St) -> add_error(St#leex.xfile, E, St). @@ -341,6 +372,12 @@ when_opt(Do, Opt, Opts) -> false -> ok end. +when_bool(Do, Bool) -> + case Bool of + true -> Do(); + false -> ok + end. + verbose_print(St, Format, Args) -> when_opt(fun () -> io:fwrite(Format, Args) end, verbose, St#leex.opts). @@ -644,14 +681,14 @@ re_repeat1([$*|Cs], Sn, S, St) -> re_repeat1(Cs, Sn, {kclosure,S}, St); re_repeat1([$+|Cs], Sn, S, St) -> re_repeat1(Cs, Sn, {pclosure,S}, St); re_repeat1([$?|Cs], Sn, S, St) -> re_repeat1(Cs, Sn, {optional,S}, St); %% { only starts interval when ere is true, otherwise normal character. -re_repeat1([${|Cs0], Sn, S, #leex{posix=true}=St) -> % $} - case re_interval_range(Cs0) of - {Min,Max,[$}|Cs1]} when is_integer(Min), is_integer(Max), Min =< Max -> - re_repeat1(Cs1, Sn, {interval,S,Min,Max}, St); - {Min,Max,[$}|Cs1]} when is_integer(Min), is_atom(Max) -> - re_repeat1(Cs1, Sn, {interval,S,Min,Max}, St); - {_,_,Cs1} -> parse_error({interval_range,string_between([${|Cs0], Cs1)}) - end; +%% re_repeat1([${|Cs0], Sn, S, #leex{posix=true}=St) -> % $} +%% case re_interval_range(Cs0) of +%% {Min,Max,[$}|Cs1]} when is_integer(Min), is_integer(Max), Min =< Max -> +%% re_repeat1(Cs1, Sn, {interval,S,Min,Max}, St); +%% {Min,Max,[$}|Cs1]} when is_integer(Min), is_atom(Max) -> +%% re_repeat1(Cs1, Sn, {interval,S,Min,Max}, St); +%% {_,_,Cs1} -> parse_error({interval_range,string_between([${|Cs0], Cs1)}) +%% end; re_repeat1(Cs, Sn, S, _) -> {S,Sn,Cs}. %% re_single(Chars, SubNumber, State) -> {RegExp,SubNumber,Chars}. @@ -733,7 +770,7 @@ special_char($|, _) -> true; special_char($*, _) -> true; special_char($+, _) -> true; special_char($?, _) -> true; -special_char(${, #leex{posix=true}) -> true; % Only when POSIX set +%% special_char(${, #leex{posix=true}) -> true; % Only when POSIX set special_char($\\, _) -> true; special_char(_, _) -> false. @@ -744,12 +781,12 @@ re_char_class([$]|Cs], St) -> % Must special case this. re_char_class(Cs, [$]], St); re_char_class(Cs, St) -> re_char_class(Cs, [], St). -re_char_class("[:" ++ Cs0, Cc, #leex{posix=true}=St) -> - %% POSIX char class only. - case posix_cc(Cs0) of - {Pcl,":]" ++ Cs1} -> re_char_class(Cs1, [{posix,Pcl}|Cc], St); - {_,Cs1} -> parse_error({posix_cc,string_between(Cs0, Cs1)}) - end; +%% re_char_class("[:" ++ Cs0, Cc, #leex{posix=true}=St) -> +%% %% POSIX char class only. +%% case posix_cc(Cs0) of +%% {Pcl,":]" ++ Cs1} -> re_char_class(Cs1, [{posix,Pcl}|Cc], St); +%% {_,Cs1} -> parse_error({posix_cc,string_between(Cs0, Cs1)}) +%% end; re_char_class([C1|Cs0], Cc, St) when C1 =/= $] -> case re_char(C1, Cs0) of {Cf,[$-,C2|Cs1]} when C2 =/= $] -> @@ -766,19 +803,19 @@ re_char_class(Cs, Cc, _) -> {reverse(Cc),Cs}. % Preserve order %% posix_cc(String) -> {PosixClass,RestString}. %% Handle POSIX character classes. -posix_cc("alnum" ++ Cs) -> {alnum,Cs}; -posix_cc("alpha" ++ Cs) -> {alpha,Cs}; -posix_cc("blank" ++ Cs) -> {blank,Cs}; -posix_cc("cntrl" ++ Cs) -> {cntrl,Cs}; -posix_cc("digit" ++ Cs) -> {digit,Cs}; -posix_cc("graph" ++ Cs) -> {graph,Cs}; -posix_cc("lower" ++ Cs) -> {lower,Cs}; -posix_cc("print" ++ Cs) -> {print,Cs}; -posix_cc("punct" ++ Cs) -> {punct,Cs}; -posix_cc("space" ++ Cs) -> {space,Cs}; -posix_cc("upper" ++ Cs) -> {upper,Cs}; -posix_cc("xdigit" ++ Cs) -> {xdigit,Cs}; -posix_cc(Cs) -> parse_error({posix_cc,substr(Cs, 1, 5)}). +%% posix_cc("alnum" ++ Cs) -> {alnum,Cs}; +%% posix_cc("alpha" ++ Cs) -> {alpha,Cs}; +%% posix_cc("blank" ++ Cs) -> {blank,Cs}; +%% posix_cc("cntrl" ++ Cs) -> {cntrl,Cs}; +%% posix_cc("digit" ++ Cs) -> {digit,Cs}; +%% posix_cc("graph" ++ Cs) -> {graph,Cs}; +%% posix_cc("lower" ++ Cs) -> {lower,Cs}; +%% posix_cc("print" ++ Cs) -> {print,Cs}; +%% posix_cc("punct" ++ Cs) -> {punct,Cs}; +%% posix_cc("space" ++ Cs) -> {space,Cs}; +%% posix_cc("upper" ++ Cs) -> {upper,Cs}; +%% posix_cc("xdigit" ++ Cs) -> {xdigit,Cs}; +%% posix_cc(Cs) -> parse_error({posix_cc,substr(Cs, 1, 5)}). escape_char($n) -> $\n; % \n = LF escape_char($r) -> $\r; % \r = CR @@ -797,24 +834,24 @@ escape_char(C) -> C. % Pass it straight through %% Int, -> Int,any %% Int1,Int2 -> Int1,Int2 -re_interval_range(Cs0) -> - case re_number(Cs0) of - {none,Cs1} -> {none,none,Cs1}; - {N,[$,|Cs1]} -> - case re_number(Cs1) of - {none,Cs2} -> {N,any,Cs2}; - {M,Cs2} -> {N,M,Cs2} - end; - {N,Cs1} -> {N,none,Cs1} - end. +%% re_interval_range(Cs0) -> +%% case re_number(Cs0) of +%% {none,Cs1} -> {none,none,Cs1}; +%% {N,[$,|Cs1]} -> +%% case re_number(Cs1) of +%% {none,Cs2} -> {N,any,Cs2}; +%% {M,Cs2} -> {N,M,Cs2} +%% end; +%% {N,Cs1} -> {N,none,Cs1} +%% end. -re_number([C|Cs]) when C >= $0, C =< $9 -> - re_number(Cs, C - $0); -re_number(Cs) -> {none,Cs}. +%% re_number([C|Cs]) when C >= $0, C =< $9 -> +%% re_number(Cs, C - $0); +%% re_number(Cs) -> {none,Cs}. -re_number([C|Cs], Acc) when C >= $0, C =< $9 -> - re_number(Cs, 10*Acc + (C - $0)); -re_number(Cs, Acc) -> {Acc,Cs}. +%% re_number([C|Cs], Acc) when C >= $0, C =< $9 -> +%% re_number(Cs, 10*Acc + (C - $0)); +%% re_number(Cs, Acc) -> {Acc,Cs}. string_between(Cs1, Cs2) -> substr(Cs1, 1, length(Cs1)-length(Cs2)). |