[EMAIL PROTECTED] writes:
> Please
> Lets have two scalars variables in Perl and some operation under
> them like an adding.
> x = a + b
> I would like know, witch auxiliary variables are creating
> on the in-line code like a Parrot
>
> somethink like T = a + b
> x = T ???
>
> and on witch circumstances depends it.
> Can I keep clear of creating this auxiliary variables anywise ?
We have no idea when they'll come up, because we haven't even layed out
the groundwork for the code generator yet.
However, such auxilliary variables show up in a lot of places. For
instance, when you add two PMCs, you need an Undef in which to put the
result. I don't entirely agree with this semantic: I think the result
PMC should be created by the add function itself.
This is how it works now:
$P0 = new PerlInt
$P0 = 3
$P1 = new PerlInt
$P1 = 4
$P2 = new Undef
$P2 = $P0 + $P1
If that counts as an auxilliary variable, you'll see them all over the
place. And there's not really a way you can avoid it.
In fact, I don't think you could avoid it if you wrote in bare PIR
without going through a compiler.
Luke
