[unix-history] / usr / src / usr.bin / pascal / pxp / error.c

/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved.  The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/

#ifndef lint
static char sccsid[] = "@(#)error.c     5.2 (Berkeley) %G%";
#endif not lint

/*
* pi - Pascal interpreter code translator
*
* Charles Haley, Bill Joy UCB
* Version 1.2 January 1979
*
*
* pxp - Pascal execution profiler
*
* Bill Joy UCB
* Version 1.2 January 1979
*/

#include "whoami.h"
#include "0.h"
#include "yy.h"

#ifdef PXP
extern  int yyline;
extern  char errout;
#endif

char    errpfx  = 'E';
extern  int yyline;
/*
* Panic is called when impossible
* (supposedly, anyways) situations
* are encountered.
#ifdef PI
* Panic messages should be short
* as they do not go to the message
* file.
#endif
*/
panic(s)
       char *s;
{

#ifdef DEBUG
       fprintf(stderr, "Snark (%s) line=%d yyline=%d\n", s, line, yyline);
#endif
#ifdef PXP
       Perror( "Snark in pxp", s);
#endif
#ifdef PI
       Perror( "Snark in pi", s);
#endif
       pexit(DIED);
}

extern  char *errfile;
/*
* Error is called for
* semantic errors and
* prints the error and
* a line number.
*/
error(a1, a2, a3, a4)
{
#ifdef PI
       char buf[256];
       register int i;
#endif
#ifdef PXP
/*
       int ofout;
*/
#endif

       if (errpfx == 'w' && opt('w') != 0) {
               errpfx == 'E';
               return;
       }
#ifdef PXP
/*
       flush();
       ofout = fout[0];
       fout[0] = errout;
*/
#endif
#ifdef PI
       Enocascade = 0;
       geterr(a1, buf);
       a1 = buf;
#endif
       if (line < 0)
               line = -line;
       yySsync();
       yysetfile(filename);
#ifdef PI
       if (errpfx == ' ') {
               printf("  ");
               for (i = line; i >= 10; i /= 10)
                       putchar(' ');
               printf("... ");
       } else if (Enoline)
               printf("  %c - ", errpfx);
       else
#endif
               fprintf(stderr, "%c %d - ", errpfx, line);
       fprintf(stderr, a1, a2, a3, a4);
       if (errpfx == 'E')
#ifdef PI
               eflg++, cgenflg++;
#endif
#ifdef PXP
               eflg++;
#endif
       errpfx = 'E';
#ifdef PI
       if (Eholdnl)
               Eholdnl = 0;
       else
#endif
               putc('\n', stderr);
#ifdef PXP
/*
       flush();
       fout[0] = ofout;
*/
#endif
}

#ifdef PI
cerror(a1, a2, a3, a4)
{

       if (Enocascade)
               return;
       setpfx(' ');
       error(a1, a2, a3, a4);
}
#endif