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#ifndef __LUAX_REF_H__
#define __LUAX_REF_H__
#include "luax_config.h"
#include "luax_state.h"
namespace Luax
{
///
/// 引用，存在LUA_REGISTRYINDEX下面的两个表里
///
class LuaxRef
{
public:
enum RefMode
{
STRONG_REF,
WEAK_REF
};
LuaxRef(int mode = STRONG_REF);
virtual ~LuaxRef();
operator bool();
void SetRef(LuaxState& state, int idx);
bool PushRef(LuaxState& state);
int GetRefID();
private:
int mRefID; // luaL_ref
int mMode; // strong or weak
};
///
/// 强引用，在LUA_REGISTRYINDEX["_LUAX_STRONGREF_TABLE"]里，保证lua object不会被回收。
///
class LuaxStrongRef: public LuaxRef
{
public:
LuaxStrongRef();
};
///
/// 弱引用，在LUA_REGISTRYINDEX["_LUAX_WEAKREF_TABLE"]里，不影响lua object的回收，只是作为一个方便取lua object的映射。
///
class LuaxWeakRef : public LuaxRef
{
public:
LuaxWeakRef();
};
}
#endif
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