From: Gabriel Scherer <gabriel.scherer@gmail.com>
To: Nicolas Ojeda Bar <nojb@math.harvard.edu>
Cc: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] stream parsers with location information?
Date: Sun, 8 Jul 2012 12:18:30 +0200 [thread overview]
Message-ID: <CAPFanBEwHQ6znL=3atL0JO36aDXtOtKMj5T7a7JV-sQw0o+Kww@mail.gmail.com> (raw)
In-Reply-To: <73F2C118-89C0-4EFB-849D-1F70B4B58AA4@math.harvard.edu>
Indeed: you need your lexer to produce location information. Instead
of manipulating a (token Stream.t), you will produce (and then parse
at the lexer level) a ((token * location) Stream.t).
This is the way Camlp4 parsers are implemented (recursive descent over
a stream of tokens and positions). See also "Planck", an experiment at
combinator parser libraries by Jun Furuse, using a similar (but
different) architecture.
http://bluestorm.info/camlp4/camlp4-doc/Sig.Lexer.html
https://bitbucket.org/camlspotter/planck/
http://camlspotter.blogspot.fr/2011/05/planck-small-parser-combinator-library.html
On Sun, Jul 8, 2012 at 12:01 PM, Nicolas Ojeda Bar
<nojb@math.harvard.edu> wrote:
> Hi,
>
> Is there a clean way to use stream parsers/lexers if I want to have
> location (line number, character position) information attached to
> each token?
>
> Thanks!
> Nicolas
>
> --
> Caml-list mailing list. Subscription management and archives:
> https://sympa-roc.inria.fr/wws/info/caml-list
> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
> Bug reports: http://caml.inria.fr/bin/caml-bugs
>
prev parent reply other threads:[~2012-07-08 10:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-08 10:01 Nicolas Ojeda Bar
2012-07-08 10:18 ` Gabriel Scherer [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAPFanBEwHQ6znL=3atL0JO36aDXtOtKMj5T7a7JV-sQw0o+Kww@mail.gmail.com' \
--to=gabriel.scherer@gmail.com \
--cc=caml-list@yquem.inria.fr \
--cc=nojb@math.harvard.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).