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[Caml-list] Camlp4: varargs ie a la Printf
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Basile STARYNKEVITCH
- Alain Frisch
- Daniel de Rauglaudre
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Date: | 2002-06-18 (06:27) |
From: | Daniel de Rauglaudre <daniel.de_rauglaudre@i...> |
Subject: | Re: [Caml-list] Camlp4: varargs ie a la Printf |
Hi, On Mon, Jun 17, 2002 at 04:38:45PM +0200, Basile STARYNKEVITCH wrote: > Pcaml.expr: LEVEL "top" > [ [ "trace" ; trid = UIDENT ; fmt = STRING ; args = LIST0 Pcaml.expr ; "end" -> > let lctrid = String.lowercase trid in > [...] > (Printf.sprintf $str:fmt$ > (**** WHAT SHOULD BE ADDED HERE? *****) John Malecki answered correcly (how to create an AST of a list), but I would just add that "args = LIST0 Pcaml.expr" does not work without separator, because if you have "a b c" on input, it does not return the list of a, b and c, but the application of the function a to b and c. A solution is to call Pcaml.expr at the level just after the application, i.e. for the normal and revised syntaxes: ".": args = LIST0 (Pcaml.expr LEVEL ".) -- Daniel de RAUGLAUDRE daniel.de_rauglaudre@inria.fr http://cristal.inria.fr/~ddr/ ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners