[luabind] Luabind and coroutines

[Alexander G. <agl...@gm...>]

Hi, all!

1. I have some troubles with understanding of coroutines part of
Luabind documentation. I think it could benefit from some elaboration,
at least can some more examples be added there?

When should I call luabind::resume_function() and when
luabind::resume() for example?

2. Can I create coroutine in Lua, pass it to C++, and call resume on
it like on coroutine I created from C?

[lua]
local f =3D function()
  while true do
    coroutine.yield()
    print("!!!")
  end
end

BindCoroutine(coroutine.create(f))
[/lua]

[cpp]
class foo
{
public:
  void BindCoroutine(luabind::object obj)
  {
    if (luabind::type(obj) !=3D LUA_TTHREAD)
    {
      lua_pushstring(obj.interpreter(), "Expected coroutine");
      lua_error(obj.interpreter());
    }
    m_Coroutine =3D obj;
  }

  void Update()
  {
    m_Coroutine.push(m_Coroutine.interpreter());
    lua_State * pThread =3D lua_tothread(m_Coroutine.interpreter(), -1);
    lua_pop(m_Coroutine.interpreter(), 1);

    luabind::resume<void>(pThread);
  }

private:
  luabind::object m_Coroutine;
};
[/cpp]

Is this the correct way? Am I missing something?

I'm getting the same assertion on luabind::resume() call at line 264
of call_function.hpp in my actual code. (I can make a minimal
compiling example if needed.)

Thanks in advance,
Alexander.

P.S. Docs say luabind::object::state() to have no arguments, but it
accepts lua_State * in current code.