Re: Emacs Lisp, macros

[Andy Wingo <wingo@pobox.com>]

Hello!

On Tue 14 Jul 2009 21:48, Daniel Kraft <d@domob.eu> writes:

> (defun primep (p &optional from)
>   (let ((i (if from from 2)))
>     (while (and (/= (% p i) 0) (<= (* i i) p))
>       (setq i (1+ i)))
>     (/= (% p i) 0)))
>
> (primep 1283939) -> #t

This is fantastic.

> While of course the #f should be %nil, this is simply because I use #f
> at the moment for nil (but that will be redefined once the falsity of
> %nil is corrected).

Yes. Hopefully we can pull in Mark's patch by the next release.

> For macros (and also for funcall/apply, which ought to be able to
> execute functions in form of an uncompiled list like '(lambda (a b) (+ a
> b))) I will probably need some means of compiling and executing a
> certain piece of code 'by hand' from within compilation.  It seems that
> I can do something along
>
> ((compile <my code here> #:from 'elisp) arguments to compiled code)

Yes this is exactly right.

> Regarding the test-suite:  It seems to me there's no 'very extensive'
> and 'complete' single test-suite for guile at the moment, but I might be
> mistaken.  So maybe I should create testsuite/elisp and a
> run-elisp-tests.scm like the one for vm which loads/compiles/runs and
> all that the individual tests?  Or is there some existing framework I
> can plug my tests into?

You should add tests under test-suite/test/elisp.test (note the dash),
and add your file to TESTS in test/Makefile.am. But you've probably
figured that out already :)

Happy hacking,

Andy
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