pure parser patch

[mike burrell]

I've written a patch for flex 2.5.4a which allows it to generate a yylex()
interface usable by bison's pure calling interface.  Bison actually has four
types of pure calling interfaces: that with just yylval, that with yylval and
yylloc, that with yylval and param (a user-supplied parameter), and that with
yylval, yylloc and param.  With my patch, you compile your lex file with -u,
-ul, -up or -ulp to get these four interfaces respectively.

My patch has been very poorly tested (though it has been tested).  No
documentation has been written for it so far.

Basically I just wanted to see why kind of feedback it got before I worked on
it further.

The patch is hopefully attached.  It's also available at
ftp://mikpos.dyndns.org/pub/src/flex-2.5.4a-pure-parser.diff{.gz}.  Excuse me
if this is the wrong e-mail address to send this to.

-- 
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flex-2.5.4a-pure-parser.diff
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