def vfunc_info_get_address(vfunc_info, gtype):
'''
GIRepository.vfunc_info_get_address almost does what we need... but it
derefs the address, so it cannot be used for our purposes. This code is
a translation of that C code into python
'''
container_info = vfunc_info.get_container()
if container_info.get_type() == GIRepository.InfoType.OBJECT:
object_info = container_info
interface_info = None
struct_info = GIRepository.object_info_get_class_struct(object_info)
else:
interface_info = container_info
object_info = None
struct_info = GIRepository.interface_info_get_iface_struct(
interface_info)
field_info = GIRepository.struct_info_find_field(struct_info,
vfunc_info.get_name())
if field_info is None:
raise AttributeError("Could not find struct field for vfunc")
implementor_class = GObject.type_class_ref(gtype)
if object_info:
implementor_vtable = implementor_class
else:
interface_type = GIRepository.registered_type_info_get_g_type(
interface_info)
implementor_vtable = GObject.type_interface_peek(
implementor_class, interface_type)
offset = GIRepository.field_info_get_offset(field_info)
return hash(implementor_vtable) + offset
