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Re: Which lexer do people use?
From: |
Akim Demaille |
Subject: |
Re: Which lexer do people use? |
Date: |
Sat, 4 Jul 2020 08:14:46 +0200 |
Hi Daniele,
> Le 3 juil. 2020 à 23:15, Daniele Nicolodi <daniele@grinta.net> a écrit :
>
> Hello,
>
> the historical pairing is using Flex with Bison. However, while Bison is
> under active development and seems to be a very solid code base, there
> isn't much activity on the Flex side https://github.com/westes/flex and
> Flex codebase and capabilities show their age.
Yes. I have a couple of issues opened over there, and it takes for ages
to get them processed. When they are.
When I tried to modernize the Flex doc about Bison, they even managed to
turn this into a lecture about software maintenance. And not install
my changes.
https://github.com/westes/flex/pull/420
> I recently became aware of RE/flex https://www.genivia.com/reflex.html
> which seems very promising. However, it only generates a C++ scanner
> which may be (I haven't tried) to retro-fit into existing C projects to,
> for example, gain full unicode (in its utf8 encoded form) support.
It seems amazing. Featurewise and performancewise. I did not know it
(nor did I know ugrep).
I've seen projects use ragel (http://www.colm.net/open-source/ragel/)
and re2c (https://re2c.org). But, sadly, I have first-hand experience
with Flex only, I can't comment about the others.
> Has anyone tried to hammer a C++ scanner peg generated by RE/flex into a
> C grammar hole generated by Bison?
>
> Which other scanners do people use?
Fine question. I'm eager to read the answers!
Cheers!
- Which lexer do people use?, Daniele Nicolodi, 2020/07/03
- Re: Which lexer do people use?,
Akim Demaille <=
- Re: Which lexer do people use?, Christian Schoenebeck, 2020/07/04
- Re: Which lexer do people use?, Akim Demaille, 2020/07/06
- Re: Which lexer do people use?, Maury Markowitz, 2020/07/06
- Re: Which lexer do people use?, Christian Schoenebeck, 2020/07/06
- Parsing a language with optional spaces, Maury Markowitz, 2020/07/06
- Re: Parsing a language with optional spaces, Christian Schoenebeck, 2020/07/06
- Re: Parsing a language with optional spaces, Maury Markowitz, 2020/07/06
- Re: Parsing a language with optional spaces, Christian Schoenebeck, 2020/07/06
- Re: Parsing a language with optional spaces, Akim Demaille, 2020/07/08
- Re: Parsing a language with optional spaces, Akim Demaille, 2020/07/06