Re: GSOC | Extending Common Lisp support

[Charles Turner <chturne at gmail dot com>]

On 7 June 2012 17:20, Jamison Hope <jrh@theptrgroup.com> wrote:
> Anyway, I don't expect syntax-case to get much use from Common Lisp
> (though I see no reason why that should be prohibited), so let's not
> spend too much time on that right now.

I was only working on it because Helmut has done a lot of work making
that LOOP implementation in Scheme. Had I implemented LOOP in CL, I
would have wanted it to be usable from Scheme also (it's a kick-ass
macro :-D), so I see no reason why the reverse shouldn't be true,
maybe Per can throw his disassembler at the syntax-case problem as
well :-)

> Note the special (i.e. dynamic variable) *PACKAGE*:
> http://www.lispworks.com/documentation/lw50/CLHS/Body/v_pkg.htm
> which needs to be consulted when looking up symbols. I'm not entirely
> sure how that should change the existing Environment searching.

What would need to change? Would you not just perform a
LispPackage#lookup in the current package (Namespace), which will
first search the symbols exported in *PACKAGE*, and then it will
search the inheritance (perhaps that word is bit strong for whats
going on here...) chain created by DEFPACKAGE?

> Chapter 21 of Practical Common Lisp might help:
> http://www.gigamonkeys.com/book/programming-in-the-large-packages-and-symbols.html

Thanks!

> Per probably Just Knew, but I looked at the output of
> --debug-print-final-expr,
> [...]

I appreciate the battle stories, I've learned several new tricks which
hopefully I can apply to the next bug :-)

I'm working on packages now, I've added nickname support in
LispPackage, and now I'm starting to write interpreter entries to the
functions already open-coded from the compiler.

Regards,
Charles.