From 7c8c68d79343d04be382334c15a73d079450857c Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Sun, 17 Oct 2021 23:05:01 +0800
Subject: *misc

---
 Runtime/LuaBind/LuaBindRefTable.h | 67 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 Runtime/LuaBind/LuaBindRefTable.h

(limited to 'Runtime/LuaBind/LuaBindRefTable.h')

diff --git a/Runtime/LuaBind/LuaBindRefTable.h b/Runtime/LuaBind/LuaBindRefTable.h
new file mode 100644
index 0000000..0d4c2d4
--- /dev/null
+++ b/Runtime/LuaBind/LuaBindRefTable.h
@@ -0,0 +1,67 @@
+#ifndef __LUA_BIND_REFTABLE_H__
+#define __LUA_BIND_REFTABLE_H__
+
+#include "LuaBindConfig.h"
+
+namespace LuaBind
+{
+
+	class State;
+
+	//
+	// ref table 管理，对strong ref table和weak ref table两个table的代理。
+	//
+	class RefTable
+	{
+	public:
+
+		enum
+		{
+			WEAK_KEY   = 1, 
+			WEAK_VALUE = 1 << 1
+		};
+
+		RefTable();
+		~RefTable();
+
+		inline operator bool() { return mState; };
+
+		void Init(State& 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(State& state, int idx);
+		void Unref(State& state, int refID);
+
+		//
+		// 将此 ref table 放在栈顶
+		//
+		void PushRefTable(State& state);
+
+		//
+		// 将 reftable[refID] 放在栈顶
+		//
+		void PushRef(State& state, int refID);
+
+		//
+		// 清空 ref table，表还留在LUA_REGISTRYINDEX[mName]
+		//
+		void Clear(State& state);
+
+	private:
+
+		friend class State;
+
+		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
\ No newline at end of file
-- 
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