From: Eli Zaretskii <eliz@gnu.org>
To: Philip Kaludercic <philipk@posteo.net>
Cc: wellons@nullprogram.com, geza.herman@gmail.com, emacs-devel@gnu.org
Subject: Re: I created a faster JSON parser
Date: Mon, 11 Mar 2024 15:29:18 +0200 [thread overview]
Message-ID: <867ci8vqvl.fsf@gnu.org> (raw)
In-Reply-To: <87ttldydf2.fsf@posteo.net> (message from Philip Kaludercic on Sun, 10 Mar 2024 21:39:29 +0000)
> From: Philip Kaludercic <philipk@posteo.net>
> Cc: Christopher Wellons <wellons@nullprogram.com>, geza.herman@gmail.com,
> emacs-devel@gnu.org
> Date: Sun, 10 Mar 2024 21:39:29 +0000
>
> Eli Zaretskii <eliz@gnu.org> writes:
>
> >> Date: Sat, 9 Mar 2024 15:37:25 -0500
> >> From: Christopher Wellons <wellons@nullprogram.com>
> >> Cc: "emacs-devel@gnu.org" <emacs-devel@gnu.org>
> >>
> >> Despite the obvious care which with this was written, I personally would
> >> not adopt a JSON parser that had not been thoroughly fuzz tested under
> >> Address Sanitizer and Undefined Behavior Sanitizer. Fuzzing is incredibly
> >> effective at finding defects, and it would be foolish not to use it in its
> >> ideal circumstances. Normally it's not difficult and requires only a few
> >> lines of code. But this JSON parser is tightly coupled with the Emacs Lisp
> >> runtime, which greatly complicates things. I couldn't simply pluck it out
> >> by itself and drop it in, say, AFL++.
> >
> > That's okay, we can start by making this an optional feature, and
> > consider making it the default after a couple of major releases;
> > meanwhile, any problems will be detected and reported.
> >
> > However, it would make much more sense to consider switching to this
> > code if it also could handle producing JSON output, thus making
> > libjansson unnecessary when we decide to switch.
>
> If libjansson is not available, it should still be possible to use this
> faster parser, while falling back to json.el for generating JSON? From
> what I understand, the main issue people have with JSON is the parsing
> bottleneck, right?
What you describe are possible fallbacks, but I would prefer not to
use any fallback at all, but instead have a full C implementation.
(Using json.el has one unfortunate disadvantage that it's incompatible
with the json.c APIs.)
next prev parent reply other threads:[~2024-03-11 13:29 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-08 10:27 I created a faster JSON parser Herman, Géza
2024-03-08 11:41 ` Philip Kaludercic
2024-03-08 12:34 ` Herman, Géza
2024-03-08 12:03 ` Eli Zaretskii
2024-03-08 12:38 ` Herman, Géza
2024-03-08 12:59 ` Eli Zaretskii
2024-03-08 13:12 ` Herman, Géza
2024-03-08 14:10 ` Eli Zaretskii
2024-03-08 14:24 ` Collin Funk
2024-03-08 15:20 ` Herman, Géza
2024-03-08 16:22 ` Eli Zaretskii
2024-03-08 18:34 ` Herman, Géza
2024-03-08 19:57 ` Eli Zaretskii
2024-03-08 20:22 ` Herman, Géza
2024-03-09 6:52 ` Eli Zaretskii
2024-03-09 11:08 ` Herman, Géza
2024-03-09 12:23 ` Lynn Winebarger
2024-03-09 12:58 ` Po Lu
2024-03-09 13:13 ` Eli Zaretskii
2024-03-09 14:00 ` Herman, Géza
2024-03-09 14:21 ` Eli Zaretskii
2024-03-08 13:28 ` Po Lu
2024-03-08 16:14 ` Herman, Géza
2024-03-09 1:55 ` Po Lu
2024-03-09 20:37 ` Christopher Wellons
2024-03-10 6:31 ` Eli Zaretskii
2024-03-10 21:39 ` Philip Kaludercic
2024-03-11 13:29 ` Eli Zaretskii [this message]
2024-03-11 14:05 ` Mattias Engdegård
2024-03-11 14:35 ` Herman, Géza
2024-03-12 9:26 ` Mattias Engdegård
2024-03-12 10:20 ` Gerd Möllmann
2024-03-12 11:14 ` Mattias Engdegård
2024-03-12 11:33 ` Gerd Möllmann
2024-03-15 13:35 ` Herman, Géza
2024-03-15 14:56 ` Gerd Möllmann
2024-03-19 18:49 ` Mattias Engdegård
2024-03-19 19:05 ` Herman, Géza
2024-03-19 19:18 ` Gerd Möllmann
2024-03-19 19:13 ` Gerd Möllmann
2024-03-12 10:58 ` Herman, Géza
2024-03-12 13:11 ` Mattias Engdegård
2024-03-12 13:42 ` Mattias Engdegård
2024-03-12 15:23 ` Herman, Géza
2024-03-12 15:39 ` Gerd Möllmann
2024-03-10 6:58 ` Herman, Géza
2024-03-10 16:54 ` Christopher Wellons
2024-03-10 20:41 ` Herman, Géza
2024-03-10 23:22 ` Christopher Wellons
2024-03-11 9:34 ` Herman, Géza
2024-03-11 13:47 ` Christopher Wellons
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