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#ifndef __LUAX_REFTABLE_H__
#define __LUAX_REFTABLE_H__
#include "luax_config.h"
namespace Luax
{
class LuaxState;
///
/// ref table 管理，对strong ref table和weak ref table两个table的代理。
///
class LuaxRefTable
{
public:
enum
{
WEAK_KEY = 1,
WEAK_VALUE = 1 << 1
};
LuaxRefTable();
~LuaxRefTable();
inline operator bool() { return mState; };
void Init(LuaxState& state, cc8* name, cc8* mode = nullptr);
bool IsKeyWeak();
bool IsValueWeak();
///
/// 对stack[idx]的实体在此ref table中增加一个引用，并返回refID
///
int Ref(LuaxState& state, int idx);
void Unref(LuaxState& state, int refID);
///
/// 将此 ref table 放在栈顶
///
void PushRefTable(LuaxState& state);
///
/// 将 reftable[refID] 放在栈顶
///
void PushRef(LuaxState& state, int refID);
///
/// 清空 ref table，表还留在LUA_REGISTRYINDEX[mName]
///
void Clear(LuaxState& state);
private:
friend class LuaxState;
lua_State* mState; // 用来做一些确认工作
cc8* mName; // ref table的名称
int mMode; // ref table的类型
};
}
#endif
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