Hi Vaci,
I suspect pycapnp currently lacks support for specifying generic type
parameters. You might want to file an issue on pycapnp's github about that.
However, I suspect you can work around it by defining the type
specializations you need in a .capnp file (which could be a private file
used by your server), like:
interface FooMyType extends(Foo(MyType)) {}
# Extend FooMyType in Python when you really want to extend Foo(MyType).
interface FooAny extends(Foo) {}
# Extend FooAny in Python when you really want to implement a generic
Foo interface.
-Kenton
On Mon, Jun 22, 2020 at 8:32 AM Vaci <v...@vaci.org> wrote:
> Given a generic Capnproto interface, such as:
>
> interface Foo(X)
> {
> bar @0 (baz :X);
> }
>
>
> How would one implement a server for Foo using pycapnp?
>
> The following python code doesn't work, presumably as Foo.Server is not a
> concrete type:
>
> class MyFoo(Foo.Server):
> def bar_context(self, ctx, **kwargs):
> pass
>
>
> When I attempt to pass my server as an interface parameter, I get the
> error:
>
> "failed: expected capability.getSchema(),extends(interfaceType); Value
> type mismatch."
>
>
> I'd be happy to use a Foo(Any).Server, if that was all I could get...
>
> Vaci
>
>
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