RE: [sv-ec] {}

Couldn't this be treated as an editorial issue?  The intent of the SV-EC was clear on this point.

-- Brad

________________________________________
From: owner-sv-ec@eda.org [owner-sv-ec@eda.org] On Behalf Of jonathan.bromley@doulos.com [jonathan.bromley@doulos.com]
Sent: Monday, July 27, 2009 3:05 PM
To: Bresticker, Shalom; sv-ec@eda.org
Subject: Re: [sv-ec] {}

Shalom,

> There seems to be an ambiguity in the LRM on the use of {} to denote
> an empty array.
>
> On the one hand, the LRM seems to restrict it to queues.
> The BNF non-terminal "primary" contains "empty_queue", defined as "{ }",

> and footnote 31 says that "{ } shall only be legal in the context ofa
queue".
>
> On the other hand, 10.10 says,
[...]

Mea culpa.  This is clearly an oversight in Mantis 1702.
I recall that I looked at the BNF and decided that no change
was needed because the existing production "concatenation"
does all that's required for unpacked array concatenation,
except that it does not admit the empty form {}, for which
the existing production "empty_queue" suffices.  But I missed
the footnote which, as you say, introduces doubt in the
reader's mind - especially when taken with the name
of the production "empty_queue".

It would probably be best to rename "empty_queue" to
"empty_concatenation" and reword the offending footnote.
I'll raise a new Mantis for this.

Thanks
--
Jonathan Bromley
Consultant

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