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From: vern@lbl-csam.arpa (Vern Paxson)
Newsgroups: comp.unix.wizards
Subject: Re: Misuse of lex
Message-ID: <4829@brl-adm.ARPA>
Date: Mon, 9-Mar-87 23:08:59 EST
Article-I.D.: brl-adm.4829
Posted: Mon Mar  9 23:08:59 1987
Date-Received: Tue, 10-Mar-87 07:18:14 EST
Sender: news@brl-adm.ARPA
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Mohamed Ellozy wrote that it is a misuse of lex to recognize a long
list of reserved words along with a general identifier pattern, because
the resulting lexical analyzers are huge and take forever to generate
and compile.  This is quite true; however, we have a from-the-ground-up
rewrite of lex, soon to be made available, which is optimized for just
these kinds of scanners.  It runs much faster than lex and produces
smaller scanners which execute faster.  If there's interest and Mohamed
mails me his inputs, I'll make the timings for our version of lex, and
perhaps win a few converts to recognizing keywords with lex.

	Vern Paxson				vern@lbl-csam.arpa
	Real Time Systems			ucbvax!lbl-csam.arpa!vern
	Lawrence Berkeley Laboratory		(415) 486-6411