Re: Change definitions of bitmap flags to bit-shifting style

From: James Coleman <jtc331(at)gmail(dot)com>
To: Michael Paquier <michael(at)paquier(dot)xyz>
Cc: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Change definitions of bitmap flags to bit-shifting style
Date: 2020-12-06 16:44:43
Message-ID: CAAaqYe-BSz+XvcvUUxwZSv9FUw5ZHZ3dGXcUpd0Db=tMUm1NsQ@mail.gmail.com
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On Sun, Dec 6, 2020 at 1:25 AM Michael Paquier <michael(at)paquier(dot)xyz> wrote:

> On Sat, Dec 05, 2020 at 10:31:09PM -0300, Alvaro Herrera wrote:
> > The hexadecimal representation is more natural to me than bit-shifting,
> > so I would prefer to use that style too. But maybe I'm trained to it
> > because of looking at t_infomask symbols constantly.
>
> If we are going to change all that, hexa style sounds good to me too.
> Would it be worth an addition to the docs, say in [1] to tell that
> this is a preferred style?
>
> [1]: https://www.postgresql.org/docs/devel/source-conventions.html?
> --
> Michael

In my view the bit shifting approach makes it more obvious a single bit is
being set, but on the other hand the hex approach makes it easier to
compare in debugging.

I’m not really sure which to prefer, though I think I would have leaned
slightly towards the former.

James

>

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