From: Remi Vanicat <vanicat@labri.u-bordeaux.fr>
To: caml-list@pauillac.inria.fr
Subject: Re: [Caml-list] Error in Camlp4 tutorial?
Date: Sat, 24 May 2003 21:18:47 +0200 [thread overview]
Message-ID: <8765o0qhk8.dlv@wanadoo.fr> (raw)
In-Reply-To: <20030524182719.GA16502@swordfish> (Matt Gushee's message of "Sat, 24 May 2003 12:27:19 -0600")
Matt Gushee <mgushee@havenrock.com> writes:
> Hello, all--
Hello
[...]
> # let add_infix lev op =
> EXTEND
> expr: LEVEL $lev$
> [ [ x = expr; $op$; y = expr -> <:expr< $lid:op$ $x$ $y$ >> ] ];
> ^^^^^^^
> Unbound quotation: "expr"
>
> Can anyone help me understand what the problem is? Is there an error in
> the tutorial, or have a done something wrong?
>
> (P.S.: I don't really understand what '<:expr<' represents. Maybe the
> answer would be obvious if I knew that?)
It would work with
ocaml camlp4o.cma pa_extend.cmo q_MLast.cmo
the <:expr< ... >> things are define in q_MLast.cmo
You should read the documentation about quotation into the camlp4
tutorial.
(well you don't need to know how to define them, but you should know
what they are).
--
Rémi Vanicat
vanicat@labri.u-bordeaux.fr
http://dept-info.labri.u-bordeaux.fr/~vanicat
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next prev parent reply other threads:[~2003-05-24 19:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-24 18:27 Matt Gushee
2003-05-24 19:18 ` Remi Vanicat [this message]
2003-05-24 20:15 ` Matt Gushee
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