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/LuaBindRef.h | 62 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 Runtime/LuaBind/LuaBindRef.h

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

diff --git a/Runtime/LuaBind/LuaBindRef.h b/Runtime/LuaBind/LuaBindRef.h
new file mode 100644
index 0000000..93b30be
--- /dev/null
+++ b/Runtime/LuaBind/LuaBindRef.h
@@ -0,0 +1,62 @@
+#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 Ref
+	{
+	public:
+
+		enum RefMode
+		{
+			STRONG_REF, 
+			WEAK_REF
+		};
+		
+		Ref(int mode = STRONG_REF);
+		virtual ~Ref();
+
+		operator bool();
+
+		void SetRef(State& state, int idx);
+		bool PushRef(State& 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 StrongRef: public Ref
+	{
+	public:
+		StrongRef();
+
+	};
+
+	//
+	// 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 WeakRef : public Ref
+	{
+	public:
+		WeakRef();
+
+	};
+
+}
+
+#endif
\ No newline at end of file
-- 
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