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Title:		PRECCX
Version:	2.50
Entered-date:	22JAN99
Description:	PRECCX is an infinite-lookahead compiler-compiler for
                context-dependent attributed grammars.  It uses and
                produces ANSI C and is plug-compatible with lex/flex
                lexers. Tested on numerous platforms.
          
                Compiler-compilers aren't that easy to describe!  Cf.
                yacc or bison.
          
                2.50 is a new public release, hoped stable, of the
                compiler compiler first released 8 years ago now and
                used worldwide on many platforms.  I have personally
                tested this release on linux 2.0.*/libc 5, solaris
                2.5/2.6, irix 6.3, all successful, and I'd like to be
                notified of any problems on other platforms!

                In the 2.45 development series I introduced a couple of
                major internal code shifts that should be shaken down
                now.
          
                The changes since last public release at 2.44 are aimed
                principally at **object orientation**.  Precc and
                generated code now compile and link under g++ as well as
                ansi c.  I can't speak for other c++ compilers.  I hope
                to improve the c++ quality later, but at least it works
                for now.
                
                Multiple instances of PRECCX parsers can now co-exist in
                C or C++ code without any cross-effects.
          
                If you wonder what the advantage of PRECCX is over yacc
                and friends, it is: parameterized/context sensitive
                grammars, higher order "macros", arbitrary lookahead
                (yacc has 1-token lookahead), referential transparancy,
                ...  in summary, it's just not the same technology.
          
                Substantial examples included.

          
Keywords:	Compiler-Compiler, ANSI C, synthetic, parameterized,
                attribute grammar.
Author: 	ptb@it.uc3m.es (Peter T. Breuer)
Maintained-by:	ptb@it.uc3m.es (Peter T. Breuer)
Primary-site:   oboe.it.uc3m.es /pub/Programs
                240KB precc-2.45j.tgz
Alternate-site: sunsite.unc.edu /pub/Linux/devel
Alternate-site: ftp.it.uc3m.es /pub/Programs
Alternate-site: ftp.comlab.ox.ac.uk /pub/Programs
Alternate-site: http://oboe.it.uc3m.es/~ptb/cgi-bin/cvs-precc.cgi
Alternate-site: http://it.uc3m.es/~ptb/cgi-bin/cvs-precc.cgi
Platforms:	ANSI C compiler (gcc preferred).
Copying-policy:	GPL with GPLlib. Commercial maintenance licences
                available.
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