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Re: modules, 2nd try.
From: |
Han-Wen Nienhuys |
Subject: |
Re: modules, 2nd try. |
Date: |
Fri, 20 Sep 2002 11:25:21 +0200 |
address@hidden writes:
> [..]
Thanks, I more or less came up with something alike yesterday evening
-- one of the other problems was that I didn't do scm_c_export() of
the symbols, which drove me up the walls ( "why isn't it seeing my
definitions...? ")
> Han-Wen> \score {
>
> Moving into a sub-scope, so ...
>
> (define submodule (resolve-module (next-module-name)))
> (beautify-user-module submodule)
>
> (module-use! submodule (module-public-interface lily-current-module))
>
> ;; At this point you want to mark all the variables imported from
> ;; lily-current-module for re-export. I'm not sure how you could do
> ;; this. Perhaps something involving module-map or module-for-each.
Ah, of course, I could batch these exports.
> lily-current-module; so you'll need to keep a stack of
> lily-current-modules.
>
> As usual, I haven't actually tested any of this (!) If you want to
> see working examples of manual module munging code (although with
> different aims from yours, kind of), look at `use-elisp-file' in
> lang/elisp/interface.scm and `fset' in lang/elisp/internals/fset.scm,
> both in CVS.
>
> Hoping this helps ...
Yes, thanks. Most of the code involved is triggered from the C part of
the code, but I noticed that most of the module system actually lives
in the SCM system, so perhaps it doesn't make much of a difference?
I think you left out the part where the new scope imports the old
(nested) scopes, i.e.
void
My_lily_lexer::add_scope (SCM module)
{
scm_set_current_module (module);
for (SCM s = scopes_; gh_pair_p (s); s = gh_cdr (s))
{
SCM expr = scm_list_n (ly_symbol2scm ("module-use!"),
module, scm_list_n (ly_symbol2scm
("module-public-i
nterface"),
gh_car (s),
SCM_UNDEFINED),
SCM_UNDEFINED);
scm_primitive_eval(expr);
}
scopes_ = scm_cons (module, scopes_);
Does your suggestion to use modules mean that there is no other
natural way to implement these nested scopes?
--
Han-Wen Nienhuys | address@hidden | http://www.cs.uu.nl/~hanwen/