162 lines
2.8 KiB
C
162 lines
2.8 KiB
C
/*
|
|
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
|
|
* See the copyright notice in the ACK home directory, in the file "Copyright".
|
|
*
|
|
* Author: Ceriel J.H. Jacobs
|
|
*/
|
|
|
|
/* E R R O R A N D D I A G N O S T I C R O U T I N E S */
|
|
|
|
/* stripped down version from the one in the Modula-2 compiler */
|
|
/* $Header$ */
|
|
|
|
/* This file contains the error-message and diagnostic
|
|
giving functions. Be aware that they are called with a variable
|
|
number of arguments!
|
|
*/
|
|
|
|
#include <varargs.h>
|
|
#include <system.h>
|
|
#include "input.h"
|
|
#include "f_info.h"
|
|
#include "LLlex.h"
|
|
|
|
/* error classes */
|
|
#define ERROR 1
|
|
#define LEXERROR 3
|
|
#define CRASH 5
|
|
#define FATAL 6
|
|
|
|
int err_occurred;
|
|
|
|
extern char *symbol2str();
|
|
|
|
/* There are three general error-message functions:
|
|
lexerror() lexical and pre-processor error messages
|
|
error() syntactic and semantic error messages
|
|
node_error() errors in nodes
|
|
The difference lies in the place where the file name and line
|
|
number come from.
|
|
Lexical errors report from the global variables LineNumber and
|
|
FileName, node errors get their information from the
|
|
node, whereas other errors use the information in the token.
|
|
*/
|
|
|
|
/*VARARGS1*/
|
|
error(va_alist)
|
|
va_dcl
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap);
|
|
_error(ERROR, ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
/*VARARGS1*/
|
|
Gerror(va_alist)
|
|
va_dcl
|
|
{
|
|
va_list ap;
|
|
char *fn = FileName;
|
|
|
|
FileName = 0;
|
|
va_start(ap);
|
|
_error(ERROR, ap);
|
|
va_end(ap);
|
|
FileName = fn;
|
|
}
|
|
|
|
/*VARARGS1*/
|
|
lexerror(va_alist)
|
|
va_dcl
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap);
|
|
_error(LEXERROR, ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
/*VARARGS1*/
|
|
fatal(va_alist)
|
|
va_dcl
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap);
|
|
_error(FATAL, ap);
|
|
va_end(ap);
|
|
sys_stop(S_EXIT);
|
|
}
|
|
|
|
/*VARARGS1*/
|
|
crash(va_alist)
|
|
va_dcl
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap);
|
|
_error(CRASH, ap);
|
|
va_end(ap);
|
|
#ifdef DEBUG
|
|
sys_stop(S_ABORT);
|
|
#else
|
|
sys_stop(S_EXIT);
|
|
#endif
|
|
}
|
|
|
|
_error(class, argv)
|
|
int class;
|
|
va_list argv;
|
|
{
|
|
/* _error attempts to limit the number of error messages
|
|
for a given line to MAXERR_LINE.
|
|
*/
|
|
unsigned int ln = 0;
|
|
register char *remark = 0;
|
|
char *fmt = va_arg(argv, char *);
|
|
|
|
/* Since name and number are gathered from different places
|
|
depending on the class, we first collect the relevant
|
|
values and then decide what to print.
|
|
*/
|
|
/* preliminaries */
|
|
switch (class) {
|
|
case ERROR:
|
|
case LEXERROR:
|
|
case CRASH:
|
|
case FATAL:
|
|
err_occurred = 1;
|
|
break;
|
|
}
|
|
|
|
/* the remark */
|
|
switch (class) {
|
|
case CRASH:
|
|
remark = "CRASH\007";
|
|
break;
|
|
case FATAL:
|
|
remark = "fatal error --";
|
|
break;
|
|
}
|
|
|
|
/* the place */
|
|
switch (class) {
|
|
case ERROR:
|
|
ln = dot.tk_lineno;
|
|
break;
|
|
case LEXERROR:
|
|
case CRASH:
|
|
case FATAL:
|
|
ln = LineNumber;
|
|
break;
|
|
}
|
|
|
|
if (FileName) fprint(STDERR, "\"%s\", line %u: ", FileName, ln);
|
|
|
|
if (remark) fprint(STDERR, "%s ", remark);
|
|
|
|
doprnt(STDERR, fmt, argv); /* contents of error */
|
|
fprint(STDERR, "\n");
|
|
}
|