st 7. 9. 2022 v 21:46 odesílatel Daniel Gustafsson <daniel@yesql.se> napsal:
As noted upthread at some point, I'm not overly excited about the parser in filter.c, for maintainability and readability reasons. So, I've reimplemented the parser in Flex/Bison in the attached patch, which IMHO provides a clear(er) picture of the grammar and is more per project standards. This version of the patch is your latest version with just the parser replaced (at a reduction in size as a side benefit).
All features supported in your latest patch version are present, and it passes all the tests added by this patch. It's been an undisclosed amount of years since I wrote a Bison parser (well, yacc really) from scratch so I don't rule out having made silly mistakes. I would very much appreciate review from those more well versed in this area.
One thing this patchversion currently lacks is refined error messaging, but if we feel that this approach is a viable path then that can be tweaked. The function which starts the parser can also be refactored to be shared across pg_dump, pg_dumpall and pg_restore but I've kept it simple for now.
Thoughts? It would be nice to get this patch across the finishline during this commitfest.
I have no objections to this, and thank you so you try to move this patch forward.
