Flex speed, (was Re: Recursive Descent Parsers and YACC)

markz@ssc.UUCP (Mark Zenier)
17 Nov 90 19:04:51 GMT

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Flex speed, (was Re: Recursive Descent Parsers and YACC) markz@ssc.UUCP (1990-11-17)
Re: Flex speed, (was Re: Recursive Descent Parsers and YACC) vern@lau.ee.lbl.gov (1990-11-21)
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Newsgroups: comp.compilers
From: markz@ssc.UUCP (Mark Zenier)
Keywords: parse, yacc, design, question
Organization: SSC, Inc., Seattle, WA
References: <F7p?bk63@cs.psu.edu>
Date: 17 Nov 90 19:04:51 GMT

> [Lex is slow, but flex uses newer techniques so that it
> is usually as fast as a hand-coded lexer. ... -John]


What kind of speedup can be gained by using flex instead of lex?


How much does the include file / new buffer stuff in flex 2.3 cost
(in terms of speed)?


Mark Zenier
markz@ssc.uucp
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