Re: Grammars, Ambiguous, ASN.1

Robin Edgar Hansen <robin.hansen@irisa.fr>
27 Jun 1999 00:01:45 -0400

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Related articles
Grammars, Ambiguous, ASN.1 sge@acm.org (1999-06-19)
Re: Grammars, Ambiguous, ASN.1 dmitrik@my-deja.com (Dmitri Katchalov) (1999-06-27)
Re: Grammars, Ambiguous, ASN.1 rsi@lucent.com (Rajappa Iyer) (1999-06-27)
Re: Grammars, Ambiguous, ASN.1 robin.hansen@irisa.fr (Robin Edgar Hansen) (1999-06-27)
Re: Grammars, Ambiguous, ASN.1 Christian.Rinderknecht@int-evry.fr (Christian Rinderknecht) (1999-06-29)
Re: Grammars, Ambiguous, ASN.1 Christian.Rinderknecht@int-evry.fr (Christian Rinderknecht) (1999-07-01)
Re: Grammars, Ambiguous, ASN.1 sge@acm.org (1999-07-05)
Re: Grammars, Ambiguous, ASN.1 elgey@dstc.qut.edu.au (Geoff Elgey) (1999-07-10)
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From: Robin Edgar Hansen <robin.hansen@irisa.fr>
Newsgroups: comp.compilers
Date: 27 Jun 1999 00:01:45 -0400
Organization: IRISA, Campus de Beaulieu, 35042 Rennes Cedex, FRANCE
References: 99-06-072
Keywords: parse

> 1. Does anyone know of an extremely reliable electronic copy of the
> grammar in raw EBNF? I'm typing it in by comparing a copy of
> X.208 and some yacc source I've unearthed.


A couple of years ago I did the very same. I used X.208 and a book from
"Technology Appraisals" - can't think of the title now. It was not too
bad. I used yacc++ (Which compiler compiler are you using?)


> 2. What's the best primer for grammar disambiguation? I can borrow
> the dragon book (Aho & Ullman) and/or the moderator's lex & yacc
> text very quickly. Should I order something else?


Left-factoring should do most of it. The value part is a bit nasty,
though.


> 3. What other advice do the readers of this newsgroup have to offer
> me?


Beware that X.208 is outdated by X.680 (and X.681 etc)


Regards,


Robin

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