On Mon 31 Jan 2011 19:44, Noah Lavine <noah.b.lav...@gmail.com> writes:
> (define (codegen)
> #`(let ((message "hello, world!\n"))
> (display message)))
>
> (define-syntax test
> (lambda (x)
> (syntax-case x ()
> (_ (codegen)))))
>
> (test)
>
> Guile tried to compile test.scm, failed, and then interpreted it
> correctly. Is that right?
Yep; as mentioned in the NEWS entry, "** Functions needed by macros at
expand-time need to be present at expand-time." I'm sure you know that
already, and your real question:
> is there a way to get more information about where the wrong-type-arg
> error was thrown?
There are several ways this could be improved:
* The exception should be about an unbound variable, not about
applying #f. I'll see what I can do there.
* The exception could be printed with an appropriate printer. See
http://thread.gmane.org/gmane.lisp.guile.devel/11066/focus=11158.
* You should see the source location of the error and the containing
forms.
Probably that thread is the best bet for making a start at this.
Regards,
Andy
--
http://wingolog.org/
