From: Max Kirillov <max630@mail.ru>
To: caml-list@inria.fr
Subject: Re: [Caml-list] stream parser jump-back
Date: Tue, 6 Aug 2002 10:05:23 +0700 [thread overview]
Message-ID: <20020806100523.D17263@max.home> (raw)
In-Reply-To: <20020805084039.F29829@verdot.inria.fr>; from daniel.de_rauglaudre@inria.fr on Mon, Aug 05, 2002 at 08:40:39AM +0200
On Mon, Aug 05, 2002 at 08:40:39AM +0200, Daniel de Rauglaudre wrote:
>> Is it possible in a stream parser to parse again already
>> accepted token.
> No.
Sad.
Well, in the case I can simply note that little of module_expr
may be misparsed as expr, and define something like
module_expr_or_expr:
[[ ... -> (<:module_expr< ...>>,<:expr< ...>>)]]
expr:
[[ (m1,_) = module_expr_or_expr; "." ...
| (_,e1) = module_expr_or_expr -> e1
]]
and so on.
> You can add a grammar entry defined by a parser. There are examples of
> that in the "normal" syntax (pa_o.ml, in Camlp4, subdirectory etc).
> See entries "test_ctyp_minusgreater", "test_label_eq",
> "test_typevar_list_dot". But I consider they are "hacks" to make
> some situation work.
Thank you.
That funcs use Stream.npeek to get a content of the stream,
than parse it manually. Hmm...
Max.
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prev parent reply other threads:[~2002-08-06 3:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-04 18:59 Max Kirillov
2002-08-05 6:40 ` Daniel de Rauglaudre
2002-08-06 3:05 ` Max Kirillov [this message]
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