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Re: Finding out when a token is consumed
From: |
Frank Heckenbach |
Subject: |
Re: Finding out when a token is consumed |
Date: |
Sat, 10 May 2003 14:37:12 +0200 |
Hans Aberg wrote:
> The problem is that you do not provide sufficiently detailed language
> information that it can be resolved from where I stand. Perhaps you knock
> on an increased lookahead, perhaps there is another problem.
In my `t1.y' example in a previous mail (BTW, did you see the
attachments, or does the mailing list cut them off or something?),
there were already 2 R/R conflicts with a very simple grammar.
I haven't tried it with a real grammar (it would be a lot of work,
inserting the `dir' nonterminals and renumbering many `$'s; since I
don't see a chance of it actually working, I'd rather not try it).
> If the needed
> lookahead increase, LALR(1)/LR(1) and such will leave you out in the cold.
Indeed, if the original grammar is LALR(1) (and it definitely needs
the one token look-ahead in various places), it would seem logical
that with the directives thrown in it will require a look-ahead of
two tokens.
> Can directives be followed in sequence without any other tokens?
Yes, but it would be easy to collapse them into a single one at lex
time, so that's not really a problem.
Frank
--
Frank Heckenbach, address@hidden
http://fjf.gnu.de/
GnuPG and PGP keys: http://fjf.gnu.de/plan (7977168E)
- Re: Finding out when a token is consumed, (continued)
- Re: Finding out when a token is consumed, Hans Aberg, 2003/05/08
- Re: Finding out when a token is consumed, Frank Heckenbach, 2003/05/08
- Re: Finding out when a token is consumed, Hans Aberg, 2003/05/09
- Re: Finding out when a token is consumed, Frank Heckenbach, 2003/05/09
- Re: Finding out when a token is consumed, Hans Aberg, 2003/05/09
- Re: Finding out when a token is consumed, Frank Heckenbach, 2003/05/09
- Re: Finding out when a token is consumed, Hans Aberg, 2003/05/10
- Message not available
- Re: Finding out when a token is consumed, Hans Aberg, 2003/05/09
- Re: Finding out when a token is consumed, Frank Heckenbach, 2003/05/09
- Re: Finding out when a token is consumed, Hans Aberg, 2003/05/10
- Re: Finding out when a token is consumed,
Frank Heckenbach <=
- Re: Finding out when a token is consumed, Hans Aberg, 2003/05/10
- Re: Finding out when a token is consumed, Frank Heckenbach, 2003/05/10
- Re: Finding out when a token is consumed, Hans Aberg, 2003/05/11
- Re: Finding out when a token is consumed, Frank Heckenbach, 2003/05/11
- Re: Finding out when a token is consumed, Hans Aberg, 2003/05/12
- Re: Finding out when a token is consumed, Frank Heckenbach, 2003/05/12
- Re: Finding out when a token is consumed, Hans Aberg, 2003/05/13
- Re: Finding out when a token is consumed, Frank Heckenbach, 2003/05/13
- Re: Finding out when a token is consumed, Hans Aberg, 2003/05/14
- Re: Finding out when a token is consumed, Frank Heckenbach, 2003/05/14