Function RefInInstance

engine/script/src/script.cpp:1358–1388

    }

    int RefInInstance(lua_State* L)
    {
        // [-1] value
        DM_LUA_STACK_CHECK(L, -1);

        GetInstanceContextTable(L);
        // [-2] value
        // [-1] instance context table or LUA_NIL

        if (lua_type(L, -1) != LUA_TTABLE)
        {
            // [-2] value
            // [-1] LUA_NIL

            lua_pop(L, 2);
            return LUA_NOREF;
        }
        // [-2] value
        // [-1] instance context table

        lua_insert(L, -2);
        // [-2] instance context table
        // [-1] value

        int instance_ref = luaL_ref(L, -2);
        // [-1] instance context table

        lua_pop(L, 1);

        return instance_ref;
    }

    void UnrefInInstance(lua_State* L, int ref)
    {