Function call_and_push_impl

library/include/DataFuncs.h:77–89

    template<isPrimitive RT, typename... AT, typename FT, typename... ET, std::size_t... I>
        requires std::is_invocable_r_v<RT, FT, ET..., AT...>
    void call_and_push_impl(lua_State* L, int base, std::index_sequence<I...>, FT fun, ET... extra)
    {
        using DFHack::LuaWrapper::UPVAL_METHOD_NAME;
        if constexpr (std::is_same_v<RT, void>) {
            std::invoke(fun, extra..., (get_from_lua_state<AT>(L, base+I))...);
            lua_pushnil(L);
        }
        else
        {
            RT rv = std::invoke(fun, extra..., (get_from_lua_state<AT>(L, base+I))...);
            df::identity_traits<RT>::get()->lua_read(L, UPVAL_METHOD_NAME, &rv);
        }
    }

    template<isPrimitive RT, typename... AT, typename FT, typename... ET, typename indices = std::index_sequence_for<AT...> >
        requires std::is_invocable_r_v<RT, FT, ET..., AT...>