Re: appendBinaryStringInfo stuff

Robert Haas <robertmhaas@gmail.com>

From: Robert Haas <robertmhaas@gmail.com>
To: Andrew Dunstan <andrew@dunslane.net>
Cc: David Rowley <dgrowleyml@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>, Peter Eisentraut <peter.eisentraut@enterprisedb.com>, Andres Freund <andres@anarazel.de>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2022-12-20T21:43:58Z
Lists: pgsql-hackers
On Tue, Dec 20, 2022 at 10:47 AM Andrew Dunstan <andrew@dunslane.net> wrote:
> There are 5 uses in the jsonb code where the length param is a compile
> time constant:
>
> andrew@ub22:adt $ grep appendBinary.*[0-9] jsonb*
> jsonb.c:            appendBinaryStringInfo(out, "null", 4);
> jsonb.c:                appendBinaryStringInfo(out, "true", 4);
> jsonb.c:                appendBinaryStringInfo(out, "false", 5);
> jsonb.c:                appendBinaryStringInfo(out, ": ", 2);
> jsonb.c:            appendBinaryStringInfo(out, "    ", 4);
>
> None of these really bother me much, TBH. In fact the last one is
> arguably nicer because it tells you without counting how many spaces
> there are.

+1. There are certainly cases where this kind of style can create
confusion, but I have a hard time putting any of these instances into
that category. It's obvious at a glance that null is 4 bytes, false is
5, etc.

-- 
Robert Haas
EDB: http://www.enterprisedb.com



Commits

  1. Change argument type of pq_sendbytes from char * to void *

  2. Remove useless casts to (void *) in hash_search() calls

  3. Change argument of appendBinaryStringInfo from char * to void *

  4. Use appendStringInfoString instead of appendBinaryStringInfo where possible