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YHDPRD.3C
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1989-09-30
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/*
HEADER: CUG nnn.nn;
TITLE: YACC - Yet Another Compilier-Compilier
VERSION: 1.0 for IBM-PC
DATE: JAN 28, 1985
DESCRIPTION: LALR(1) Parser Generator. From UNIX
KEYWORDS: Parser Generator Compilier-Compilier YACC
SYSTEM: IBM-PC and Compatiables
FILENAME: YHDPRD.3C
WARNINGS: This program is not for the casual user. It will
be useful primarily to expert developers.
CRC: N/A
SEE-ALSO: LEX and PREP
AUTHORS: Scott Guthery 11100 leafwood lane Austin, TX 78750
COMPILERS: DESMET-C
REFERENCES: UNIX Systems Manuals
*/
#include "y1.h"
#include "y3.h"
void hideprod( void )
{
/* in order to free up the mem and amem arrays for the optimizer,
/* and still be able to output yyr1, etc., after the sizes of
/* the action array is known, we hide the nonterminals
/* derived by productions in levprd.
*/
register i, j;
j = 0;
levprd[0] = 0;
PLOOP(1,i)
{
if( !(levprd[i] & REDFLAG) )
{
++j;
if( foutput != NULL )
{
fprintf( foutput, "Rule not reduced: %s\n", writem( prdptr[i] ) );
}
}
levprd[i] = *prdptr[i] - NTBASE;
}
if( j ) fprintf( stdout, "%d rules never reduced\n", j );
}