Re: I created a faster JSON parser

[Philip Kaludercic <philipk@posteo.net>]

"Herman, Géza" <geza.herman@gmail.com> writes:

> Hi,
>
> I created a faster JSON parser for emacs, you can check it out here:
>
> https://github.com/geza-herman/emacs/tree/faster-json-parsing

For convenience, this is a URL to the patch:

https://github.com/geza-herman/emacs/commit/d76feeeac3ce397f15aebdde8b9deae676b0bf1e.patch

>
> It replaces json-parse-string and json-parse-buffer functions. The
> behavior should be the same as before, with the only exception that
> objects with duplicated keys are not detected if :object-type is not
> 'hash-table.

Is that a problem?

> This parser runs 8-9x faster than the jansson based parser on my
> machine (tested on clangd language server messages).  An additional
> tiny benefit is that large integers are parsed, instead of having an
> "out of range" error.

That sounds interesting, but I am reminded of this article:
https://seriot.ch/projects/parsing_json.html.  There seem to be plenty
of difficult edge-cases when dealing with JSON input, that should
probably be tested if Emacs has it's own custom parser built-in.

> What do you think?
>
> Geza

-- 
	Philip Kaludercic on peregrine