From owner-cvs-all  Wed Oct 27 10:51:41 1999
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From: "David E. O'Brien" <obrien@FreeBSD.org>
Date: Wed, 27 Oct 1999 10:51:37 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/usr.bin/yacc skeleton.c
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obrien      1999/10/27 10:51:37 PDT

  Modified files:
    usr.bin/yacc         skeleton.c 
  Log:
  Allow a user specified parameter to 'yyparse()', in a manner similar to
  that used by bison.  The names are consistent with the bison implementation
  but this one also allows the type of the parameter to be specified.
  
  For a desired prototype of:
  
  	int yyparse __P((struct yyresult *));
  
  and compile like this:
  
  	yacc -dv grammar.y
  	cc -c -DYYPARSE_PARAM_TYPE="struct yyresult *" \
  	      -DYYPARSE_PARAM="parm" y.tab.c
  
  and use like this:
  
  	${
  	#include "usrtypes.h"
  	#include "usrproto.h"
  	}$
  
  	%token NUMBER
  
  	%%
  
  	goal : NUMBER
  		{
  		parm->value = yylval;
  		} ;
  
  If YYPARSE_PARAM_TYPE isn't specified then "void *" is the default type.
  If YYPARSE_PARAM is not specified then the generated code behaves exactly
  as traditional byacc.
  
  PR:		13562
  Submitted by:	W Gerald Hicks <wghicks@bellsouth.net>
  
  Revision  Changes    Path
  1.25      +12 -9     src/usr.bin/yacc/skeleton.c



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