Re: How to make ROMable Lua data

["Juris Kalnins" <juris@...>]

On Tue, 13 Jan 2009 12:57:00 +0200, Bogdan Marinescu <bogdan.marinescu@gmail.com> wrote:

> > sorry, my error. Replace those two lines with:
> >
> > lua_remove(L, 1);
> > return ((lua_CFunction) p)(L);
>
> I understand, but at this point you have an even bigger problem :)
> lightuserdatas have a "global" metatable, just like strings and other
> elementary types (only "full" userdatas can get per-instance
> metatables). So your lightCall function will be called for all your
> lightuserdata. And from what I can tell the lightCall function doesn't
> get the function name as a parameter, so you won't know what's the
> actual function that you need to call.

It gets lightuserdata pointer of type int (*)(struct lua_State *)
as argument 1, because it is metamethod for lightuserdata object.
That is the function it needs to call. That is why it
does lua_remove(L, 1) before forwarding call to actual function.

--j<