Re: [luabind] weak_ref issue patch

[Christian <neu...@ya...>]

On Tuesday 23 July 2013, at 12:00:29, Glen Fraser <hol...@gm...> wrote:
> > The struct name "only_accepts_nonconst_pointers" is meant as an error
> > message: adopt only works with non-const pointers (meaning that the
> > adopted type must be both a pointer and a non-const one).
> 
> Thanks, Christian -- I saw that, but I don't know how to fix it.  Presumably
> this is related to the fact that the object I'm trying to "adopt" is held
> in a smart pointer (boost::shared_ptr).  But I haven't declared the
> smart_ptr as const anywhere…
> 
> I declare my class binding like this:
> 
>      class_<Actor, Actor_wrapper, boost::shared_ptr<Actor> >("Actor")
>      .def(constructor<const string &>())
>      .def("draw", &Actor::draw, &Actor_wrapper::default_draw)
>      ];
> 
> And the function I'm trying to call from C++ is like this:
Sorry, I hit accidentaly sent my message before it was finished, here is the 
function:

void bindLuaPart()
{
        luabind::wrapped_self_t& wrapper = 
            luabind::detail::wrap_access::ref(*this);
        if (wrapper.m_strong_ref.is_valid()) {
            LOG_W("Double call to wrap_Component::bindLuaPart");
            return;
        }
        wrapper.get(wrapper.state());
        wrapper.m_strong_ref.set(wrapper.state());
 }

This is highly dependent on implementation details though, but it works at 
least with the original luabind.