From d2e4b2839bc7ce874370ff4c52dcfdadf666ff52 Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Sun, 15 Nov 2020 09:59:32 +0800
Subject: +lua binding

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

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

diff --git a/Runtime/Scripting/LuaBindRefTable.h b/Runtime/Scripting/LuaBindRefTable.h
new file mode 100644
index 0000000..95a21f9
--- /dev/null
+++ b/Runtime/Scripting/LuaBindRefTable.h
@@ -0,0 +1,67 @@
+#ifndef __LUA_BIND_REFTABLE_H__
+#define __LUA_BIND_REFTABLE_H__
+
+#include "LuaBindConfig.h"
+
+namespace LuaBind
+{
+
+	class LuaBindState;
+
+	///
+	/// ref table 管理，对strong ref table和weak ref table两个table的代理。
+	///
+	class LuaBindRefTable
+	{
+	public:
+
+		enum
+		{
+			WEAK_KEY   = 1, 
+			WEAK_VALUE = 1 << 1
+		};
+
+		LuaBindRefTable();
+		~LuaBindRefTable();
+
+		inline operator bool() { return mState; };
+
+		void Init(LuaBindState& 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(LuaBindState& state, int idx);
+		void Unref(LuaBindState& state, int refID);
+
+		///
+		/// 将此 ref table 放在栈顶
+		///
+		void PushRefTable(LuaBindState& state);
+
+		///
+		/// 将 reftable[refID] 放在栈顶
+		///
+		void PushRef(LuaBindState& state, int refID);
+
+		///
+		/// 清空 ref table，表还留在LUA_REGISTRYINDEX[mName]
+		///
+		void Clear(LuaBindState& state);
+
+	private:
+
+		friend class LuaBindState;
+
+		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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