Issues with Lunar while using multiple lunar templated objects.

[Sivan Thiruvengadam <rajskm@...>]

Hi,

I am using LUNAR(http://lua-users.org/wiki/CppBindingWithLunar) for exposing my C++ objects to LUA.  

The following is the C Portion of the code. CLObject is one class. CLNumList  is another class which are being discussed here.

#define NUMLIST "CLNumList"

typedef struct {CLNumList*pT;} CLNL;

typedef struct {CLObject *pT;} CLO;

class CLObject {

public:

// Constants

static const char className[];

static Luna< CLObject >::RegType methods[];

..

int GetType(lua_State *L);//(unsigned char&cType);

int GetListofNumbers(lua_State *L);

CObject* real_object; //this is the actual pointer to the C++ class.

};

class CLNumList{

public:

// Constants

static const char className[];

static Luna< CLNumList >::RegType methods[];

..

        

int GetFirst(lua_State *L);

int GetNext(lua_State *L);

int GetInteger(lua_State *L);

int GetIntegerCount(lua_State *L);

CNumList* real_object; //this is the actual pointer to the C++ class.

} ;

The following is .cpp code

...

CLObject :GetListofNumbers(lua_State *L)//

{

                CLNumList*o = new CLNumList(L);

CLNL*ud = static_cast< CLNL*>(lua_newuserdata(L, sizeof(CLNumList)));  // create new userdata

real_object->GetListofNumbers(*o->real_object); //CLObject

ud->pT = o;

lua_pushlightuserdata(L, ud);

luaL_getmetatable(L, NUMLIST );

lua_setmetatable(L, -2);

return 1; 

}

-- The following is the LUA calling scenario.

CLObjectInstance = CLObjectI:new()

local clnumlist1 = CLObjectInstance: GetListofNumbers()

local total =  clnumlist1:GetIntegerCount()

local value=0

for lpCount = 1, total do

if(lpCount==1) then 

          value = clnumlist1GetFirst()

else

          value = clnumlist1GetNext()

end

end

--now if i access the following method using the CLObjectInstance, then LUA throws this error.

CLObjectInstance:GetType() --throws attempt tp call method GetType a nil value.

Could any one shed light on this issue? . 

Thanks and Regards.