Re: [Qemu-devel] [qemu RFC v2] qapi: add "firmware.json"

[Laszlo Ersek]

On 04/18/18 17:27, Laszlo Ersek wrote:
> On 04/18/18 17:17, Eric Blake wrote:
>> On 04/18/2018 07:40 AM, Laszlo Ersek wrote:
>>
>>> Is it guaranteed that lists in JSON keep the order of the elements?
>>> Because, dictionaries definitely don't promise any ordering between the
>>> keys.
>>
>> Yes, JSON lists preserve order (and we have to explicitly document cases
>> where order within a list is not significant).
>>
> 
> Thanks.
> 
> After digesting the comments on @type for a while longer, from Dan, Gerd
> and Paolo, I think we *should* keep @type, but rather than having it be
> a simple enum, let's make it a list of enums, where order matters. Keep
> @features separate, and document that order does not matter there.
> 
> Here's why: my brain is crashing trying to come up with a
> human-parseable explanation why for *some* entries in @features, their
> relative order is important, and why for some others, it isn't.
> Discerning the subset for which order matters, from any specific
> grab-bag of @features, will be no fun for the human user.
> 
> Given that the "ordered features" idea was brought to life solely
> because a firmware can provide multiple interfaces (with a strong
> preference order between them), I guess we might as well be honest about
> that, and update @type accordingly.
> 
> Thoughts? :)

I mean I realize I just reinvented Paolo's point from
<http://mid.mail-archive.com/address@hidden>
:) I don't intend to claim the idea, I just needed some time to
understand it.

Laszlo