On Wed, May 04, 2005 at 05:26:25PM +0100, Nicholas Clark wrote:
> On Mon, May 02, 2005 at 08:58:43AM +0200, Leopold Toetsch wrote:
> > Nicholas Clark <[EMAIL PROTECTED]> wrote:
> > > Parrot gives each PMC class 8 private flag bits. I was wondering how to
> > > use
> > > these most efficiently for ponie. My thoughts so far are
> >
> > > 1 bit for SVf_IOK
> > > 1 bit for SVf_NOK
> > > 1 bit for SVf_POK
> > > 1 bit for SVf_ROK
> >
> > I'd not mess around with (or introduce) flag bits. The more that this
> > would only cover perl5 PMCs. Presuming that the Perl5 PMCs are subtypes
>
> Yes, this is the bit I'd not fully thought through. At some point when
> ponie gets mature the innards are going to be presented with SVs that are
> actually PMCs which aren't Perl 5 types.
How about a vtable method that returns an integer of some common flags that
are meaningful to both p5 and parrot?
then pp_pow() would just need to call it once at the start, then do
various checks on the returned value?
So pseduo-code like
if (pmc->vtable->is_IOK())
...
else if (pmc->vtable->is_NOK())
...
becomes
status = pmc->vtable->status();
if (status & IOK)
...
else if (status & NOK)
...
#include <std disclaimer about me knowing almost zilch about parrot>
Dave
--
My get-up-and-go just got up and went.
