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Re: [Chicken-users] macroexpansion and csc
From: |
Lui Fungsin |
Subject: |
Re: [Chicken-users] macroexpansion and csc |
Date: |
Fri, 21 Mar 2008 11:19:10 -0700 |
I guess I hit a related problem.
;; test1.scm
(declare (uses srfi-13))
(eval-when (compile load eval)
(require-extension srfi-13))
(define-macro (dc stuff)
(string-downcase stuff))
(print (dc "ABC"))
% csc test1.scm
Error: during expansion of (dc ...) - unbound variable: string-downcase
Call history:
<syntax> (begin (print (dc "ABC")))
<syntax> (print (dc "ABC"))
<syntax> (dc "ABC")
<eval> (string-downcase stuff) <--
*** Shell command terminated with exit status 1:
/usr/local/bin/chicken test1.scm -output-file test1.c -quiet
In this case, I didn't write the srfi-13 module - do I need to modify
srfi-13.scm and recompile chicken?
I guess there should be a way to make string-downcase available in
macro expansion time, right? (I thought the (eval-when (compile load
eval)...) will do the trick)
Thanks
On 3/21/08, John Cowan <address@hidden> wrote:
> Heinrich Taube scripsit:
>
> > (define-macro (with-optkeys spec . body)
> > (expand-optkeys (car spec) (cdr spec) body))
> >
> > (define (expand-optkeys args vars body)
> > `(let (...) ,@body))
>
> A procedure (or variable) that is invoked from a low-level macro must
> be defined using define-for-syntax so that it will be available for
> execution at compile time.
>
> --
> Is a chair finely made tragic or comic? Is the John Cowan
> portrait of Mona Lisa good if I desire to see address@hidden
> it? Is the bust of Sir Philip Crampton lyrical, http://ccil.org/~cowan
> epical or dramatic? If a man hacking in fury
> at a block of wood make there an image of a cow,
> is that image a work of art? If not, why not? --Stephen Dedalus
>
>
> _______________________________________________
> Chicken-users mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/chicken-users
>
- [Chicken-users] macroexpansion and csc, Heinrich Taube, 2008/03/21
- Re: [Chicken-users] macroexpansion and csc, John Cowan, 2008/03/21
- Re: [Chicken-users] macroexpansion and csc,
Lui Fungsin <=
- Re: [Chicken-users] macroexpansion and csc, John Cowan, 2008/03/21
- Re: [Chicken-users] macroexpansion and csc, Lui Fungsin, 2008/03/21
- Re: [Chicken-users] macroexpansion and csc, felix winkelmann, 2008/03/21
- Re: [Chicken-users] macroexpansion and csc, Hans Bulfone, 2008/03/21
- Re: [Chicken-users] macroexpansion and csc, felix winkelmann, 2008/03/23