From:	eplmst AT lu DOT erisoft DOT se (Martin Stromberg)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Newbie needs Bison help
Date:	9 Oct 2001 12:04:46 GMT
Organization:	Ericsson Erisoft AB, Sweden
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Thomas Hutto (huttothomas AT hotmail DOT com) wrote:
: I've RTFM'd till I sick.  So maybe there is some help out there, pretty 
: please?

: Need to implement YYPRINT.
: So in the C-section add

: #define YYDEBUG 1
: #define YYPRINT(a,b,c) yyprint(a,b,c)

: In the Bisson types section I must have
: %union
: {
:   char rxch;
:   int  rxint
:   str  rxstr;
: }   for the YYSTACK's type.

: Which yields a

: typedef union {
:   char rxch;
:   int  rxint
:   str  rxstr;
: }YYSTYPE;

: in the parser code _AFTER_ the stuff from the C-Section.

: This means that when I prototype my

: stactic void yyprint(FILE *F, int type, YYSTYPE value);

: function the compiler complains because it has not yet seen the typedef for 
: the union.

: Anyway to make Bisson behave other than directly editing the generated 
: C-Code (y.tab.c)?  Have a hunch that TFM left off a critical step and I'm 
: not good enough at C-Code to figure what it is.

: I tried to cobble up a forward declaration for the union without success.

Try the "-d" option to bison and #include "y.tab.h" in the C section.


Right,

						MartinS

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