Function GetInstanceContextTable

engine/script/src/script.cpp:1072–1108

    }

    static void GetInstanceContextTable(lua_State* L)
    {
        DM_LUA_STACK_CHECK(L, 1);

        GetInstance(L);
        // [-1] instance

        if (!GetMetaFunction(L, -1, META_GET_INSTANCE_CONTEXT_TABLE_REF, sizeof(META_GET_INSTANCE_CONTEXT_TABLE_REF) - 1))
        {
            lua_pop(L, 1);
            lua_pushnil(L);
            return;
        }
        // [-2] instance
        // [-1] META_GET_INSTANCE_CONTEXT_TABLE_REF()

        lua_insert(L, -2);
        // [-2] META_GET_INSTANCE_CONTEXT_TABLE_REF()
        // [-1] instance

        lua_call(L, 1, 1);
        // [-1] instance context table ref or LUA_NOREF
        assert(lua_type(L, -1) == LUA_TNUMBER);

        int context_table_ref = lua_tonumber(L, -1);
        lua_pop(L, 1);

        if (context_table_ref == LUA_NOREF)
        {
            lua_pushnil(L);
            // [-1] LUA_NIL
            return;
        }

        lua_rawgeti(L, LUA_REGISTRYINDEX, context_table_ref);
        // [-1] instance context table
    }

    uintptr_t GetInstanceId(lua_State* L)
    {