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#ifndef __LUA_BIND_REF_H__
#define __LUA_BIND_REF_H__
#include "LuaBindConfig.h"
#include "LuaBindState.h"
namespace LuaBind
{
///
/// 引用，存在LUA_REGISTRYINDEX下面的两个表里
///
class LuaBindRef
{
public:
enum RefMode
{
STRONG_REF,
WEAK_REF
};
LuaBindRef(int mode = STRONG_REF);
virtual ~LuaBindRef();
operator bool();
void SetRef(LuaBindState& state, int idx);
bool PushRef(LuaBindState& state);
int GetRefID();
private:
int mRefID; // luaL_ref
int mMode; // strong or weak
};
///
/// 强引用，在LUA_REGISTRYINDEX["_LUA_BIND_STRONGREF_TABLE"]里，保证lua object不会被回收。
///
class LuaBindStrongRef: public LuaBindRef
{
public:
LuaBindStrongRef();
};
///
/// 弱引用，在LUA_REGISTRYINDEX["_LUA_BIND_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 LuaBindWeakRef : public LuaBindRef
{
public:
LuaBindWeakRef();
};
}
#endif
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