From: Daniel de Rauglaudre <daniel.de_rauglaudre@inria.fr>
To: caml-list@inria.fr
Subject: Re: [Caml-list] Camlp4-tutorial-Example
Date: Tue, 3 Sep 2002 09:08:42 +0200 [thread overview]
Message-ID: <20020903090842.B30173@verdot.inria.fr> (raw)
In-Reply-To: <Pine.LNX.3.95.1020902224954.1686B-100000@first.in-berlin.de>; from oliver@first.in-berlin.de on Mon, Sep 02, 2002 at 10:52:27PM +0200
Hi,
On Mon, Sep 02, 2002 at 10:52:27PM +0200, Oliver Bandel wrote:
> What I do not understand:
> This calculator knows that * and / have higher Priority
> than + and -.
> How is this achieved?
By the order of the rules. The rules with same priority are grouped
together:
[ ... | ... | ... ]
and there is another level of parentheses (of bracket parentheses)
separated by vertical bars to indicate the priority:
[
[ ... | ... | ... ] (* lowest priority *)
| [ ... | ... | ... ] ...
| [ ... | ... | ... ] (* highest priority *)
]
> I didn't find any entries, that provide priority-distinction
> between +,-,*,/.
Forget Yacc! :-)
> Is the Grammar-Module magic?
> (Gramagic?)
What do you mean by "magic"?
--
Daniel de RAUGLAUDRE
daniel.de_rauglaudre@inria.fr
http://cristal.inria.fr/~ddr/
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next prev parent reply other threads:[~2002-09-03 7:08 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-02 19:52 Oliver Bandel
2002-09-02 20:52 ` Oliver Bandel
2002-09-02 21:43 ` Oliver Bandel
2002-09-03 7:08 ` Daniel de Rauglaudre [this message]
2002-09-04 19:46 ` Oliver Bandel
2002-09-06 23:10 ` Oliver Bandel
2002-09-07 15:52 ` Daniel de Rauglaudre
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