public static int As(IntPtr ptr) { try { if (!LuaObject.IsTypeTable(ptr, 2)) { return(Error(ptr, "No matched type of param 2")); } string meta = LuaNativeMethods.lua_tostring(ptr, -1); LuaNativeMethods.luaL_getmetatable(ptr, meta); LuaNativeMethods.lua_setmetatable(ptr, 1); LuaObject.PushValue(ptr, true); LuaNativeMethods.lua_pushvalue(ptr, 1); return(2); } catch (Exception e) { return(Error(ptr, e)); } }