Re: pure parsers and reentrant scanners

Peter Eisentraut <peter@eisentraut.org>

From: Peter Eisentraut <peter@eisentraut.org>

To: Tom Lane <tgl@sss.pgh.pa.us>

Cc: pgsql-hackers <pgsql-hackers@postgresql.org>, pgbuildfarm@rjuju.net, Andreas Karlsson <andreas@proxel.se>

Date: 2025-01-17T15:35:55Z

Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

Return yyparse() result not via global variable
- 473a575e0597 18.0 landed
Remove flex version checks
- 0869ea43e9c2 18.0 landed
Drop warning-free support for Flex 2.5.35
- 6fdd5d956343 18.0 landed
plpgsql: pure parser and reentrant scanner
- 7b27f5fd36cb 18.0 landed
flex code modernization: Replace YY_EXTRA_TYPE define with flex option
- b1ef48980ddd 18.0 landed
guc: reentrant scanner
- d663f150b5ed 18.0 landed
jsonpath scanner: reentrant scanner
- 2a7425d7eef9 18.0 landed
syncrep parser: pure parser and reentrant scanner
- db6856c9913f 18.0 landed
replication parser: pure parser and reentrant scanner
- e4a8fb8fefb9 18.0 landed
bootstrap: pure parser and reentrant scanner
- 3e4bacb17100 18.0 landed
Small whitespace improvement
- 399d0f1e11b5 18.0 landed
Prevent redeclaration of typedef yyscan_t
- 382092a0cd2c 18.0 landed
seg: pure parser and reentrant scanner
- 1f0de66ea2a5 18.0 landed
cube: pure parser and reentrant scanner
- 802fe923e3cd 18.0 landed

On 09.01.25 15:53, Tom Lane wrote:
> Peter Eisentraut <peter@eisentraut.org> writes:
>> The second patch contemplates raising the minimum required flex version,
>> but what to?
> 
> Meh, let's just rip out the version check.  It's no longer very
> relevant.  Nobody is going to be using anything older than 2.5.35.
> While 2.5.35 produces compile warnings, it does still work, so
> rejecting it with a changed version check seems unnecessary.

This has been done.