Re: Looking for Unix lex for modern systems

arnold@skeeve.com (Aharon Robbins)
Sun, 9 Jan 2022 19:04:34 -0000 (UTC)

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Looking for Unix lex for modern systems arnold@skeeve.com (2022-01-06)
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From: arnold@skeeve.com (Aharon Robbins)
Newsgroups: comp.compilers
Date: Sun, 9 Jan 2022 19:04:34 -0000 (UTC)
Organization: Aioe.org NNTP Server
References: 22-01-023 22-01-025
Injection-Info: gal.iecc.com; posting-host="news.iecc.com:2001:470:1f07:1126:0:676f:7373:6970"; logging-data="28948"; mail-complaints-to="abuse@iecc.com"
Keywords: lex, history
Posted-Date: 09 Jan 2022 16:45:07 EST

In article 22-01-025, gah4 <gah4@u.washington.edu> wrote:
>On Thursday, January 6, 2022 at 4:09:53 PM UTC-8, Aharon Robbins wrote:
>> Can anyone point me at a version of Unix lex that will run on Linux?
>
>A web search for lex source found this:
>
>http://heirloom.sourceforge.net/devtools.html
>
>which sounds like exactly what you want.


I got this to build and run, but it ran out of buffer space. :-(


I have since made good progress with flex. The original lexer
was doing its own token buffering. I moved to using yytext, and
also changed YY_INPUT to get one character of input at a time
as lex used to do. These two together have allowed me to make
real progress.


Performance isn't an issue, so doing one character at a time is fine.


Thanks everyone for the help.
--
Aharon (Arnold) Robbins arnold AT skeeve DOT com

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