On Fri, Jun 30, 2006 at 10:50:58PM -0700, Matt Diephouse wrote:
> Chip Salzenberg <[EMAIL PROTECTED]> wrote:
> >On Wed, Jun 28, 2006 at 11:40:28PM -0700, Matt Diephouse wrote:
> >> Tcl uses C< .namespace [''] > to refer to the root namespace (correctly,
> >> I think) and I can't think of any language that would want to differentiate
> >> between the two.
> >
> >All you need to disprove this speculation is one counterexample, and the
> >counterexample doesn't even have to exist yet.
>
> Fair enough. But one question remains: how do you tell IMCC that you
> want to be in the root HLL namespace? C< .namespace [] > is a parse
> error.
No answer for you yet. Bug report on that one, please; at first blush I
think the solution is that ".namespace" without parameters should be the
root, or that some pseudo-HLL, perhaps the default "parrot" one, should have
the root namespace as its HLL namespace.
> >> Also, is there any reason we can't/shouldn't add find_global variants
> >> that lookup globals in HLL's? Right now we have find_global_p_p_s.
> >> Adding find_global_p_s_p_s would let me reach into Tcl's private very
> >> easily instead of having to crawl the namespaces myself.
> >
> >It's three steps rather than one, but it's not crawling, and it's already
> >in the pdd, mostly:
> >
> > .local pmc tcl
> > tcl = compreg "tcl"
> >
> > .local pmc ns
> > ns = tcl.'get_namespace'(['Foo';'Bar'])
> >
> >I'm cheating a little here because I'm showing you an example with a key
> >(which the docs don't specifically allow) rather than an array (which they
> >do allow), but the point is to demonstrate compiler.get_namespace().
>
> This doesn't work for *private* namespaces -- only public ones. ParTcl
> currently uses a macro to crawl its private namespaces, which AFAIK is
> the *only* way to access the helper subs it has in private namespaces.
Oh. Well, if tcl is looking up its _own_ private namespace, and if I
understand what you mean by "private namespace" (that's not a standard
Parrot term of art), and (IIRC) Tcl namespaces are untyped, then you can
take advantage of the untyped interface which accepts (or should accept!) a
multi-dimensional key:
.local pmc private_ns
private_ns = get_namespace '_tcl'
...
.local private_foo_bar
private_foo_bar = private_ns['Foo';'Bar']
--
Chip Salzenberg <[EMAIL PROTECTED]>
