From: "Nicolas Pouillard" <nicolas.pouillard@gmail.com>
To: Jake Donham <jake@donham.org>
Cc: caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] camlp4 parser accepts more than its grammar?
Date: Fri, 27 Jun 2008 10:29:58 +0200 [thread overview]
Message-ID: <1214554558-sup-9348@ausone.inria.fr> (raw)
In-Reply-To: <c7e4e9f0806261410n645217c1qb89ac81a531030e0@mail.gmail.com>
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Excerpts from Jake Donham's message of Thu Jun 26 23:10:20 +0200 2008:
> Hi list,
>
> I expected the following program to fail with a parse error, but it
> happily ignores the extra '+'. I would be grateful if someone could
> point out what I'm doing wrong. Thanks,
Nothing wrong from you, that's a camlp4 known bug (PR#4551, PR#4513...).
> open Camlp4.PreCast;;
>
> let expr = Gram.Entry.mk "expr";;
> let stmt = Gram.Entry.mk "stmt";;
>
> EXTEND Gram
> expr: [[
> x = expr; "+"; y = expr -> x + y
> | x = INT -> int_of_string x
> ]];
> stmt:
> [[ e = expr; ";"; `EOI -> e ]];
> END;;
>
> prerr_endline (string_of_int (Gram.parse_string stmt Loc.ghost "2 + 1 + ;"))
>
--
Nicolas Pouillard aka Ertai
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next prev parent reply other threads:[~2008-06-27 8:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-26 21:10 Jake Donham
2008-06-27 8:29 ` Nicolas Pouillard [this message]
2008-06-27 8:42 ` [Caml-list] " Till Varoquaux
2008-07-01 0:01 ` Arthur Chan
2008-07-01 7:02 ` blue storm
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