Re: JFlex mode for FSF-Emacs ?

["Andreas Wieweg" <andreas.wieweg@obbit.se>]

> >>>>> "Andreas" == Andreas Wieweg <andreas.wieweg@obbit.se> writes:
> > Why doesn't it work for Emacs 21.2 ?
>
> If things don't work in Emacs-21.2 it's because there's a problem.
> Try to fix it and things will then work,
>
> PS: of course, we could provide a more specific diagnosis if you
>     could give us a more specific description of "doesn't work".

I'm sorry. I didn't realise I didn't give enough information.


*** A try at giving a more specific description: ***
The jflex-mode should for jflex-files do:
"Syntax highlighting (with font-lock) for JFlex keywords and Java actions "

However there is almost no syntax-highligting when using FSF-Emacs, only
comments and strings are highlighted.

I thought that maybe some function/variable was used in the code,
and that it was obvious for experienced emacs-lisp users that the
function/variable was a XEmacs function/variable. But maybe it
isn't that easy and takes more time and effort.

I would like to fix it but I don't know where start looking.
So any pointers and clues about what may be wrong
(why the syntax-highlighting doesn't work) are very welcome!

Hopefully this is a somewhat more specific description
of "doesn't work" :)

Regards
/ Andreas Wieweg




*** A small example jflex file (expr.flex) ***
/* A small calculator example */

import java_cup.runtime.*;
class Yytoken extends Symbol
{
  Yytoken(int token, Object obj)
    {
      super(token,obj);
    }
  Yytoken(int token)
    {
      super(token);
    }
}

%%

%eofval {
  return (new Yytoken(sym.EOF));
%eofval }

NONNEWLINE_WHITE_SPACE_CHAR=[\ \t\b\012]
DIGIT=[0-9]
NUMBER={DIGIT}+

%%
  {NONNEWLINE_WHITE_SPACE_CHAR}+ {;}
"("                            {return new Yytoken(sym.LPAREN);}
")"                            {return new Yytoken(sym.RPAREN);}
";"                            {return new Yytoken(sym.SEMI);}
"+"                            {return new Yytoken(sym.PLUS);}
"-"                            {return new Yytoken(sym.MINUS);}
"*"                            {return new Yytoken(sym.TIMES);}
"/"                            {return new Yytoken(sym.DIVIDE);}
"%"                            {return new Yytoken(sym.MOD);}
"^"                            {return new Yytoken(sym.MACHT);}
{NUMBER}                       {return new Yytoken(sym.NUMBER,new
Integer(yytext()));}
.|\n                           {;}