Re: Introspection with GUPnP

[Torsten Schoenfeld <kaffeetisch gmx de>]

On 11.02.2015 20:15, Nick Glencross wrote:
> sub action_callback
> {
>     my ($service_proxy, $service_proxy_action) = @_;
>
>     print "Action complete\n";
>
>     # In newer GUPnP I think this can be undef
>     my $error =  Glib::File::Error->new ('io', '');
>
>     my ($success, $out_values) = $service_proxy->end_action_list
>         ($service_proxy_action,
>          $error,
>          [ ], [ ]
>         );
> }

It looks like the annotations for that function are not correct in
gupnp:
<https://developer.gnome.org/gupnp/unstable/GUPnPServiceProxy.html#gupnp-service-proxy-end-action-list>.
 The error parameter should be marked as an "out" parameter.

But even with that fixed, I think you would still get an error because
we don't currently support marshalling errors from C to Perl.  Like
gobject-introspection itself, the assumption is that
error-out-parameters are the last parameters of a function, in which
case the function is marked as "throws" in the .gir file.  We convert
these kinds of error-out-parameters to Perl exceptions.

That said, I think it would be fairly easy to implement the GError->SV
conversion with gperl_sv_from_gerror.