*修改代码结构

1 files changed, 52 insertions, 0 deletions

diff --git a/src/lua/common/je_lua_reference.h b/src/lua/common/je_lua_reference.h
new file mode 100644
index 0000000..28c3bc3
--- /dev/null
+++ b/src/lua/common/je_lua_reference.h
@@ -0,0 +1,52 @@
+#ifndef __JIN_COMMON_REFERENCE_H
+#define __JIN_COMMON_REFERENCE_H
+
+#include "../luax.h"
+
+namespace JinEngine
+{
+    namespace Lua
+    {
+
+        ///
+        /// This class wraps the reference functionality built into Lua, which allows C++ code to refer to Lua 
+        /// variables.
+        ///
+        class Reference
+        {
+        public: 
+            Reference(lua_State* L, unsigned int i)
+                : mL(L)
+            {
+                luax_pushvalue(mL, i);
+                mIndex = luax_ref(mL, LUA_REGISTRYINDEX);
+            }
+
+            ~Reference()
+            {
+                unref();
+            }
+
+            void unref()
+            {
+                luax_unref(mL, LUA_REGISTRYINDEX, mIndex);
+            }
+
+            ///
+            /// Push value onto the stack.
+            ///
+            void push()
+            {
+                luax_rawgeti(mL, LUA_REGISTRYINDEX, mIndex);
+            }
+
+        private:
+            lua_State* const mL;
+            int mIndex;
+
+        };
+
+    } // namespace Lua
+} // namespace JinEngine
+
+#endif // __JIN_COMMON_REFERENCE_H
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