Re: [Cbor] A CBOR tag for alternatives/unions, request for comments

Is there any consideration into how such tags and their associated datum be
transcoded to JSON, without loss of information?

On Wed, Feb 23, 2022 at 9:16 AM Carsten Bormann <cabo@tzi.org> wrote:

> I finally got around to integrate the proposal by Duncan Coutts and
> Michael Peyton Jones to allocate tags for enumerated alternative data items
> into notable-tags.
>
>
> https://www.ietf.org/archive/id/draft-bormann-cbor-notable-tags-06.html#name-enumerated-alternative-data
>
> I took the liberty to suggest tag 101 (‘e’) for the extended case.
> I also made the cases non-overlapping, as this simplifies deterministic
> encoding (and interop testing in general).
>
> Current state of tag allocation:
> range  used     %                 free                total
> 0 1+0    12 50.00                   12                   24
> 1 1+1    62 26.72                  170                  232
> 2 1+2    45  0.07                65235                65280
> 3 1+4     3  0.00           4294901757           4294901760
> 4 1+8     2  0.00 18446744069414584318 18446744069414584320
>
> If we have time in the CBOR meeting today (very likely) and you have time
> and comments, we could complete the discussion and ask IANA to register.
>
> Coordinates of the CBOR meeting are below.
> You’ll need an IETF datatracker account to participate; you can do that
> here:
>
> https://datatracker.ietf.org/accounts/create/
>
> I’m out of English words to apologize for my tardy treatment of this
> matter (and for the late notice of the meeting in 100 minutes).
>
> Grüße, Carsten
>
>
> The next CBOR WG Virtual Meeting is this Wednesday, 23 Feb, at 15:00
> UTC.  Information for this meeting is here:
>
> Datatracker:
> https://datatracker.ietf.org/meeting/interim-2022-cbor-04/session/cbor
> Notes: https://notes.ietf.org/notes-ietf-interim-2022-cbor-04-cbor
> Meetecho:
> https://meetings.conf.meetecho.com/interim/?short=9d38d4c9-cf9e-48c3-bc25-97b025698ec0
>
>
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