If Gee can't be used with GObject Introspection, no libraries can be created to develop other software depending on Gee.
May be some one else in gtk-list or gtk-app-devel-list can help to find how to use Vala's generics or construct generics classes on GObject-Introspection, at the end Gee C definitions have constructors defining the object type to use and some functions to create/free them.
2012/6/4 Maciej Marcin Piechotka <uzytkownik2@xxxxxxxxx>
Hi,
Unfortunately due to GNOME DB problems the bug was lost. I will try to
reply here.
On Sun, 2012-06-03 at 13:00 +0000, libgee wrote:
> I'm trying to use python to use Gee. Gee is primary a Vala library to
> be used on software written in Vala, but it defines GIR files, then it
> must be usable in any language supporting GObject Introspection.
>
Unfortunatly no. Libgee uses Vala generics which are not supported by
GIR. This will cause problem when marshalling/demarshalling python
objects.
> When try to define a new object in Python, like Gee.ArrayList, I can't
> because the following error:
>
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "/usr/lib/python2.7/dist-packages/gi/module.py", line 243, in
> __getattr__
> return getattr(self._introspection_module, name)
> File "/usr/lib/python2.7/dist-packages/gi/module.py", line 180, in
> __getattr__
> wrapper = metaclass(name, bases, dict_)
> File "/usr/lib/python2.7/dist-packages/gi/types.py", line 232, in
> __init__
> register_interface_info(cls.__info__.get_g_type())
> TypeError: must be an interface
>
> By reading the code I found that most Gee's Interfaces are not defined
> GObject as pre-requisite, then I've added, then found that some other
> doesn't put interfaces definition inside a namespace clause. That
> doesn't make Vala compiler to rise errors and GIR are correct, but
> they must be correctly defined. I'll attach a patch to get your review
> and aprobation.
>
I believe that would be a Vala error while generating GIR as the
pre-requisite exists (indirectly). I don't think it is possible to write
Vala interface without this.
I am not sure what you mean by "GIR are correct, but they must be
correctly defined"
> But at the end found that Gee.Traversable is not defined in GIR
> repository. I'm trying to find it by:
>
> >>> Gee.Traversable
>
> I spect to get a pointer to an object defined in gir.repository.Gee,
but the following error was rised:
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "/usr/lib/python2.7/dist-packages/gi/module.py", line 243, in
> __getattr__
> return getattr(self._introspection_module, name)
> File "/usr/lib/python2.7/dist-packages/gi/module.py", line 105, in
> __getattr__
> self.__name__, name))
> AttributeError: 'gi.repository.Gee' object has no attribute
'Traversable'
>
> I'm reading the Gee.Traversable and GIR definition in order to find
the problem.
Thanks for looking into this. I am not sure how much time you have - it
would be great if vala and gir played nicely but it would require work
on both sides.
Best regards,
Maciej
--
Trabajar, la mejor arma para tu superación
"de grano en grano, se hace la arena" (R) (en trámite, pero para los cuates: LIBRE)
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