From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from concorde.inria.fr (concorde.inria.fr [192.93.2.39]) by yquem.inria.fr (Postfix) with ESMTP id 071B3BC75 for ; Fri, 18 Feb 2005 17:28:06 +0100 (CET) Received: from pauillac.inria.fr (pauillac.inria.fr [128.93.11.35]) by concorde.inria.fr (8.13.0/8.13.0) with ESMTP id j1IGS5fS017269 for ; Fri, 18 Feb 2005 17:28:05 +0100 Received: from nez-perce.inria.fr (nez-perce.inria.fr [192.93.2.78]) by pauillac.inria.fr (8.7.6/8.7.3) with ESMTP id RAA09825 for ; Fri, 18 Feb 2005 17:28:05 +0100 (MET) Received: from alex.barettalocal.com (h213-255-109-130.albacom.net [213.255.109.130] (may be forged)) by nez-perce.inria.fr (8.13.0/8.13.0) with ESMTP id j1IGS4n4027894 for ; Fri, 18 Feb 2005 17:28:04 +0100 Received: from [127.0.0.1] (localhost.localdomain [127.0.0.1]) by alex.barettalocal.com (Postfix) with ESMTP id E68CE2BAB37 for ; Fri, 18 Feb 2005 17:28:03 +0100 (CET) Message-ID: <42161793.7030704@barettadeit.com> Date: Fri, 18 Feb 2005 17:28:03 +0100 From: Alex Baretta User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20050105 Debian/1.7.5-1 X-Accept-Language: it, en-us, en MIME-Version: 1.0 To: Ocaml Subject: Re: [Caml-list] Camlp4 with traditional syntax (was: Camlp4 documentation) References: <4215A18C.7040603@barettadeit.com> <4215AD36.1070303@cs.unisa.edu.au> In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Miltered: at concorde with ID 42161795.000 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Miltered: at nez-perce with ID 42161794.001 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Spam: no; 0.00; baretta:01 caml-list:01 syntax:01 hendrik:01 tews:01 wrote:01 syntax:01 ocaml:01 expander:01 ocaml:01 rauglaudre:01 parsing:01 expander:01 bypassing:01 baretta:01 X-Spam-Checker-Version: SpamAssassin 3.0.2 (2004-11-16) on yquem.inria.fr X-Spam-Status: No, score=0.1 required=5.0 tests=FORGED_RCVD_HELO autolearn=disabled version=3.0.2 X-Spam-Level: Hendrik Tews wrote: > Alex Cowie writes: > > For me, the use of revised syntax has been a disincentive to using > Camlp4 metaprogramming. I have always wondered whether a traditional > syntax version of Camlp4 was technically feasible. Any comments? > > I believe it is possible. You can parse traditional ocaml (as > opposed to the revised syntax) with camlp4, so it should be > possible to write a quotation expander using traditional ocaml. I > remember Daniel de Rauglaudre complaint a few times about the > difficulty of parsing ocaml. So a quotation expander using > traditional ocaml might have dark corners which do not look as > elegant as pa_macro.ml. There is one more issue with Camlp4: it does not allow for quotations to expand to generic syntactic elements. Often, I use quotations which expand to module definitions. I had to implement my own quotation expander, bypassing the limitations of Camlp4 to achieve this. Alex -- ********************************************************************* http://www.barettadeit.com/ Baretta DE&IT A division of Baretta SRL tel. +39 02 370 111 55 fax. +39 02 370 111 54 Our technology: The Application System/Xcaml (AS/Xcaml) The FreerP Project