hi,
Is there any documentation about the complete syntax for pmc files when
writing PMCs (this time in C)? I found genclass.pl and pmc2c.pl, but I
couldn't find anything about all keywords that can be used. In
particular, I wrote down some scenarios. Maybe there are some more cases
than these.
Case 1:
pmclass Foo {
[ vtable methods here]
}
This one is simple. It just creates a new PMC class, as a superclass. If
I understand correctly, when writing such a class, you would start with
genclass.pl. Or, would extending "default" be ok as well?
Case 2:
pmclass Foo extends Bar {
[vtable methods here]
}
A PMC class extending from Bar. Extra vtable methods for Bar's extra
functionality (WRT Foo), or vtable methods with different behaviour than
Bar, must be written.
Case 3:
pmclass Foo does Bar {
[vtable methods here]
}
I don't really understand what this does. I understand the "does"
keyword says something about an interface ("Bar") that is implemented by
this class ("Foo"). Why would you do this? Why does one need this? I saw
in pmc2cl.pl that there are a number of interfaces defined already. Is
there anything written about these interfaces?
Thanks,
klaas-jan
