[SI-LIST] Re: The YACC-compatible Parser Generator produces errors whenprocessing the ICM lex&Yacc files

From: slwu <Shulong.Wu@xxxxxxxxxxxx>
To: Kelly Green <kgreen22@xxxxxxxxxxxxxx>
Date: Wed, 24 Mar 2004 20:19:48 +0800

Hi Green,

Thanks for your detail explanation. I think that  I made a mistake.

The bison version which I used is 1.28, not 1.35, so errors are produced.

Thanks

Shulong

Kelly Green wrote:

> Shulong.Wu@xxxxxxxxxxxx wrote:
>
> >Hi all
> >
> >When I use bison to convert the ICM parser Yacc file (ibis-icm-yacc.y)
> >to C program, like this:
> >
> >/usr/bin/bison -d -p ICM ibis-icm-yacc.y
> >
> >It produces many errors, like these:
> >
> >ibis-icm-yacc.y:587: invalid @-construct
> >
> >ibis-icm-yacc.y:587: $. is invalid
> ...
>
> I am using Bison version 1.35 under Linux.  The makefile converts the
> yacc .y source file into .c with the following command and result.
>
> bison -y -d ibis-icm-yacc.y
> conflicts:  32 shift/reduce, 10 reduce/reduce
>
> I can only presume your source has somehow become corrupted, or you are
> possibly using an incompatible version of bison.
>
> Please ensure that you are using the correct archive.  Archives were
> provided for both windows (.zip), and unix (.tar) systems.  They differ
> in line termination sequences (cr/lf for windows, lf for unix), and may
> not be processed properly if, for example, files from the windows
> archive are processed under unix or vice-versa.
>
> Please also note: the Makefile post processes the bison output file to
> produce the final ibis-icm-yacc.c file, so several more steps are
> required if you are compiling by hand and not using Make.
>
> Since the ibis-icm-yacc.c output file is provided in the distribution,
> it is not actually necessary to use bison on the source '.y' file at
> all.  You can simply compile the provided .c file.  The use of bison is
> required only if you must modify the original .y file.
>
> Finally, the syntax in question, '@$', is a location reference
> (line/column) for the target of a rule, and is most assuredly a
> legitimate construction.  It should not cause bison to error out.
>
> If you have further questions, or additional information that might shed
> some light on this problem, feel free to contact me, I will be happy to
> help you sort out the problem.
>
> Regards - Kelly Green
>
> --
> Kelly Green <kgreen22@xxxxxxxxxxxxxx>

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[SI-LIST] Re: The YACC-compatible Parser Generator produces errors whenprocessing the ICM lex&Yacc files

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