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Date:	Thu, 20 May 1999 10:41:47 -0400
From:	Paul Berrevoets <paul AT swi DOT com>
Organization:	SWI Systemware/Halcyon Inc.
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To:	cygwin-list <cygwin AT sourceware DOT cygnus DOT com>
Subject:	Re: lex and yacc...
References:	<19990520094727 DOT 23804 DOT fmail AT 263 DOT net>

shichunhui AT 263 DOT net wrote:

> Hi,anyone here has used the lex and yacc in the cygwin?
> I found a byacc and a bison, a flex and a flex++,
> but I am not sure of their usage.Is there anything different
> from the lex,yacc of unix?

We have a number of libraries that use flex and bison. They used to use
lex and yacc - some ported without any modifications. Of particular
note, one library relies on recursive calls to yyparse, which with yacc
required a lot of extra bookkeeping for the global variables. Bison is
better in this regard because most of the variables are on the stack,
which makes recursive use a no-brainer.
--------------------------------------------
Paul Berrevoets              paul AT halcyon DOT ca
Halcyon Inc.           http://www.halcyon.ca

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