From: "Jeff Henrikson" <jehenrik@yahoo.com>
To: <caml-list@inria.fr>
Subject: [Caml-list] RE: camlp4: generating keyword on the fly
Date: Sat, 12 Jan 2002 20:44:56 -0500 [thread overview]
Message-ID: <005301c19bd3$e76efd60$0b01a8c0@mit.edu> (raw)
Aha. Never mind. I figured it out. Use $keyword$ around it. Sorry.
Jeff Henrikson
> -----Original Message-----
> From: Jeff Henrikson [mailto:jehenrik@yahoo.com]
> Sent: Saturday, January 12, 2002 8:29 PM
> To: caml-list@inria.fr
> Subject: camlp4: generating keyword on the fly
>
>
> I want to be able to cook up keywords on the fly using camlp4, and it seems like I should be able to do it. But this is
> as far as I get. This function compiles:
>
>
> let make_one_item_entry entrysym (keyword : string) =
> let tmp = (Grammar.Entry.create Pcaml.gram entrysym) in
> EXTEND
> tmp: [ [ "birthday" ] ]
> ;
> END;
> tmp;;
>
> Grammar.Entry.print (make_one_item_entry "happy" "birthday");;
>
> # [ LEFTA
> [ "birthday" ] ]
> - : unit = ()
>
>
> But this one does not:
>
>
> let make_one_item_entry entrysym (keyword : string) =
> let tmp = (Grammar.Entry.create Pcaml.gram entrysym) in
> EXTEND
> tmp: [ [ keyword ] ]
> ;
> END;
> tmp;;
>
> Grammar.Entry.print (make_one_item_entry "happy" "birthday");;
>
>
> Note that this looks right but isn't:
>
>
> let make_one_item_entry entrysym (keyword : string) =
> let tmp = (Grammar.Entry.create Pcaml.gram entrysym) in
> let tmp2 = (Grammar.Entry.create Pcaml.gram keyword) in
> EXTEND
> tmp: [ [ tmp2 ] ]
> ;
> END;
> tmp;;
>
> Grammar.Entry.print (make_one_item_entry "happy" "birthday");;
>
> # [ LEFTA
> [ birthday ] ]
> - : unit = ()
>
>
> (The quotes are missing) I'm new at camlp4, so I don't know if my jargon for explaining this is right, but:
>
> I can get an empty entry with Grammar.Entry.create, but the only way to extend it seems to be with EXTEND which so far
> as I can see only takes string constants. Does this make sense?
>
>
> Jeff Henrikson
>
>
-------------------
Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/
To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr
reply other threads:[~2002-01-13 1:29 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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='005301c19bd3$e76efd60$0b01a8c0@mit.edu' \
--to=jehenrik@yahoo.com \
--cc=caml-list@inria.fr \
/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