Dan Sugalski writes: > At 10:42 PM +0100 12/17/03, Leopold Toetsch wrote: > >While playing with calling threaded subs, I came along a thing which > >I think might be suboptimal: > >pdd03 states that the method PMC should go into P2. This doesn't > >really play with Perl5 <-> Perl6 interoperbility IMHO. Perl5 methods > >are plain subs, where the first param is the object. > > PDD 03 states that the *object* goes in P2. This works out just fine > with perl 5 style method calls, where the argument list doesn't > distinguish the object other than by position. What happens is that > when a perl 5 sub is called, @_ is a combination of P2 if it's > non-NULL, and the remaining PMC registers. It's slightly more work > for the perl 5 code generator to handle the check, but other than > that it shouldn't be a problem.
Or perhaps the invocant can go in both P2 and $_[0] (depending on where that happens to be). Luke
