1 files changed, 42 insertions, 0 deletions
diff --git a/src/libjin-lua/common/l_reference.cpp b/src/libjin-lua/common/l_reference.cpp
new file mode 100644
index 0000000..2fcf792
--- /dev/null
+++ b/src/libjin-lua/common/l_reference.cpp
@@ -0,0 +1,42 @@
+#include "common/je_lua.h"
+
+#include "l_reference.h"
+
+namespace JinEngine
+{
+    namespace Lua
+    {
+
+        LuaRef::LuaRef(lua_State* L, int i)
+            : mL(L)
+        {
+            // Get value.
+            luax_pushvalue(mL, i);
+            // Set reference.
+            luax_getreferencestable(L);
+            luax_pushvalue(mL, -2);
+            mIndex = luax_ref(mL, -2);
+            luax_pop(L, 3);
+        }
+
+        LuaRef::~LuaRef()
+        {
+            unref();
+        }
+
+        void LuaRef::unref()
+        {
+            luax_getreferencestable(mL);
+            luax_unref(mL, -1, mIndex);
+            luax_pop(mL, 1);
+        }
+
+        void LuaRef::push()
+        {
+            luax_getreferencestable(mL);
+            luax_rawgeti(mL, -1, mIndex);
+            luax_remove(mL, -2);
+        }
+
+    }
+}
+\ No newline at end of file