diff options
Diffstat (limited to 'lib/parsetools/src/leex.erl')
| -rw-r--r-- | lib/parsetools/src/leex.erl | 34 |
1 files changed, 15 insertions, 19 deletions
diff --git a/lib/parsetools/src/leex.erl b/lib/parsetools/src/leex.erl index e2e7d7359f..8a4a5e8d86 100644 --- a/lib/parsetools/src/leex.erl +++ b/lib/parsetools/src/leex.erl @@ -37,7 +37,6 @@ -import(lists, [member/2,reverse/1,sort/1,delete/2, 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]). -import(orddict, [store/3]). @@ -251,10 +250,10 @@ is_filename(T) -> shorten_filename(Name0) -> {ok,Cwd} = file:get_cwd(), - case lists:prefix(Cwd, Name0) of - false -> Name0; - true -> - case lists:nthtail(length(Cwd), Name0) of + case string:prefix(Name0, Cwd) of + nomatch -> Name0; + Rest -> + case unicode:characters_to_list(Rest) of "/"++N -> N; N -> N end @@ -490,12 +489,9 @@ parse_rules_end(_, NextLine, REAs, As, St) -> %% action has been read. Keep track of line number. collect_rule(Ifile, Chars, L0) -> - %% Erlang strings are 1 based, but re 0 :-( - {match,[{St0,Len}|_]} = re:run(Chars, "[^ \t\r\n]+", [unicode]), - St = St0 + 1, - %%io:fwrite("RE = ~p~n", [substr(Chars, St, Len)]), - case collect_action(Ifile, substr(Chars, St+Len), L0, []) of - {ok,[{':',_}|Toks],L1} -> {ok,substr(Chars, St, Len),Toks,L1}; + {RegExp,Rest} = string:take(Chars, " \t\r\n", true), + case collect_action(Ifile, Rest, L0, []) of + {ok,[{':',_}|Toks],L1} -> {ok,RegExp,Toks,L1}; {ok,_,_} -> {error,{L0,leex,bad_rule}}; {eof,L1} -> {error,{L1,leex,bad_rule}}; {error,E,_} -> {error,E} @@ -549,7 +545,7 @@ var_used(Name, Toks) -> parse_rule_regexp(RE0, [{M,Exp}|Ms], St) -> Split= re:split(RE0, "\\{" ++ M ++ "\\}", [{return,list},unicode]), - RE1 = string:join(Split, Exp), + RE1 = lists:append(lists:join(Exp, Split)), parse_rule_regexp(RE1, Ms, St); parse_rule_regexp(RE, [], St) -> %%io:fwrite("RE = ~p~n", [RE]), @@ -589,9 +585,9 @@ nextline(Ifile, L, St) -> eof -> {eof,L}; {error, _} -> add_error({L+1, leex, cannot_parse}, St); Chars -> - case substr(Chars, span(Chars, " \t\n")+1) of - [$%|_Rest] -> nextline(Ifile, L+1, St); - [] -> nextline(Ifile, L+1, St); + case string:take(Chars, " \t\n") of + {_, [$%|_Rest]} -> nextline(Ifile, L+1, St); + {_, []} -> nextline(Ifile, L+1, St); _Other -> {ok,Chars,L+1} end end. @@ -824,7 +820,7 @@ re_char_class(Cs, Cc, _) -> {reverse(Cc),Cs}. % Preserve order %% 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(Cs) -> parse_error({posix_cc,string:slice(Cs, 0, 5)}). escape_char($n) -> $\n; % \n = LF escape_char($r) -> $\r; % \r = CR @@ -863,7 +859,7 @@ escape_char(C) -> C. % Pass it straight through %% re_number(Cs, Acc) -> {Acc,Cs}. string_between(Cs1, Cs2) -> - substr(Cs1, 1, length(Cs1)-length(Cs2)). + string:slice(Cs1, 0, string:length(Cs1)-string:length(Cs2)). %% We use standard methods, Thompson's construction and subset %% construction, to create first an NFA and then a DFA from the @@ -1343,7 +1339,7 @@ out_file(Ifile, Ofile, St, DFA, DF, Actions, Code, L) -> eof -> output_file_directive(Ofile, St#leex.ifile, L); {error, _} -> add_error(St#leex.ifile, {L, leex, cannot_parse}, St); Line -> - case substr(Line, 1, 5) of + case string:slice(Line, 0, 5) of "##mod" -> out_module(Ofile, St); "##cod" -> out_erlang_code(Ofile, St, Code, L); "##dfa" -> out_dfa(Ofile, St, DFA, Code, DF, L); @@ -1523,7 +1519,7 @@ prep_out_actions(As) -> Name = list_to_atom(lists:concat([yyaction_,A])), [Chars,Len,Line,_,_] = Vars, Args = [V || V <- [Chars,Len,Line], V =/= "_"], - ArgsChars = string:join(Args, ", "), + ArgsChars = lists:join(", ", Args), {A,Code,Vars,Name,Args,ArgsChars} end, As). |