# New Ticket Created by Matt Diephouse
# Please include the string: [perl #42865]
# in the subject line of all future correspondence about this issue.
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=42865 >
There's no real way to set a vtable function at runtime. It's
possible to use the PIR compiler to eval a new function, but there's
no way to take an existing sub and add it as a vtable function[1].
Before :vtable, this operation simply meant adding the sub to the new
namespace under the right name. But since that's going away, we need
a new way to do things.
I suspect we need some sort of set_vtable opcode.
set_vtable ['Foo'; 'Bar'], 'get_string', $P0
Maybe there should be set_root_vtable and set_hll_vtable variants to
go along with to match the set_*global opcodes.
I'm not sure how this should interact with PMCs or whether there
should be get_*vtable opcodes. It should be easy enough to return a
Bound_NCI PMC if the user requests a vtable function from a PMC.
[1] Technically, there is a way, but it's a bug. See RT#42864.
--
Matt Diephouse
http://matt.diephouse.com
