From: Hongbo Zhang <bobzhang1988@gmail.com>
To: Alain Frisch <alain@frisch.fr>
Cc: Caml List <caml-list@inria.fr>
Subject: Re: [Caml-list] Is there a printer for ocaml's parsetree
Date: Mon, 27 Aug 2012 07:45:34 -0400 [thread overview]
Message-ID: <503B5DDE.1070705@gmail.com> (raw)
In-Reply-To: <503B3818.1050503@frisch.fr>
On 8/27/12 5:04 AM, Alain Frisch wrote:
> On 08/26/2012 11:41 PM, Hongbo Zhang wrote:
>> Hi List,
>> Is there any printer for ocaml's parsetree, I mean when you print
>> the parsetree, the textual output can be fed to the ocaml's compiler
>> again.
>> I took a look at the ocaml's source tree, the built-in printer for
>> ocaml's parsetree seems to be only for debugging purpose.
>
> There is a printer in tools/pprintast.ml. It would be useful to
> integrate it to the ocaml compilers, with an option to tell them to
> dump the (preprocessed) parsetree in source form.
>
I found this was only used in tools/cmt2annot.ml. It would be useful to
have it installed. The output of -dparsetree is not that readable, more
important, it would be great if the output could be compiled again.
It's non-noncessarily complex that camlp4 maintains 4 printers (one for
original, revised, and 2 for toplevel).
Just filed a feature request.
Thanks!
>> Alain, when you do Ast-Rewriter, how do you visualize the output if you
>> don't have a printer for ocaml's parsetree?
>
> Currently, I use -dparsetree when I need to debug some ast rewriter
> (-ppx).
>
>
> -- Alain
next prev parent reply other threads:[~2012-08-27 11:45 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-26 21:41 Hongbo Zhang
2012-08-27 9:04 ` Alain Frisch
2012-08-27 11:45 ` Hongbo Zhang [this message]
2012-10-17 16:20 ` Alain Frisch
2012-10-18 0:31 ` bob zhang
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