Re: Bison/Yacc grammar tool wanted (Steve Masticola)
5 Nov 91 14:22:38 GMT

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Bison/Yacc grammar tool wanted (Steve Boswell) (1991-11-03)
Re: Bison/Yacc grammar tool wanted (1991-11-05)
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Newsgroups: comp.compilers
From: (Steve Masticola)
Keywords: yacc, debug
Organization: Rutgers Univ., New Brunswick, N.J.
References: 91-11-009
Date: 5 Nov 91 14:22:38 GMT

Steve Boswell writes:
> I'm looking for a tool that will:

> [1] Print a list of rules and line numbers of all rules whose
> subrules have already been printed above. ...

> [2] List all rules used only once, etc. so I could simplify the
> grammar.

What you're looking for is called 'yyref', and was published on
comp.sources.unix. I've fixed a few of the bugs in it and would be
glad to send you a copy of the repaired version (or put it up on the
archive here, if there's enough interest).

If you'd rather have the original, you should be able to get it from
the comp.sources.unix archive on in

- Steve Masticola (

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