410 lines
6.4 KiB
C
410 lines
6.4 KiB
C
/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*
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* Author: Ceriel J.H. Jacobs
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*/
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/* 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 */
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/* $Id$ */
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/* This file contains the (non-portable) error-message and diagnostic
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giving functions. Be aware that they are called with a variable
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number of arguments!
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*/
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#include "parameters.h"
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#include "debug.h"
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#if __STDC__
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#include <system.h>
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#include <em_arith.h>
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#include <em_label.h>
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#include <em_code.h>
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#include "input.h"
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#include "f_info.h"
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#include "print.h"
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#include "LLlex.h"
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#include "main.h"
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#include "node.h"
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#include "warning.h"
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#include "error.h"
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/* error classes */
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#define ERROR 1
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#define WARNING 2
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#define LEXERROR 3
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#define LEXWARNING 4
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#define CRASH 5
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#define FATAL 6
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#ifdef DEBUG
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#define VDEBUG 7
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#endif
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int err_occurred;
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extern char *symbol2str();
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/* There are three general error-message functions:
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lexerror() lexical and pre-processor error messages
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error() syntactic and semantic error messages
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node_error() errors in nodes
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The difference lies in the place where the file name and line
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number come from.
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Lexical errors report from the global variables LineNumber and
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FileName, node errors get their information from the
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node, whereas other errors use the information in the token.
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*/
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static void _error(int, struct node *, char *, register va_list, int);
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#if __STDC__
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#ifdef DEBUG
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/*VARARGS*/
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void debug(char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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{
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_error(VDEBUG, NULLNODE, ap, 0);
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}
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va_end(ap);
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}
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#endif /* DEBUG */
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/*VARARGS*/
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void error(char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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{
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_error(ERROR, NULLNODE, fmt, ap, 0);
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}
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va_end(ap);
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}
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/*VARARGS*/
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void node_error(struct node *node, char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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{
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_error(ERROR, node, fmt, ap, 0);
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}
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va_end(ap);
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}
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/*VARARGS*/
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void warning(int class, char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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{
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_error(WARNING, NULLNODE, fmt, ap, class);
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}
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va_end(ap);
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}
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/*VARARGS*/
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void node_warning(struct node *node, int class, char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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{
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_error(WARNING, node, fmt, ap, class);
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}
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va_end(ap);
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}
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/*VARARGS*/
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void lexerror(char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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{
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_error(LEXERROR, NULLNODE, fmt, ap, 0);
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}
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va_end(ap);
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}
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/*VARARGS*/
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void lexwarning(int class, char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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{
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_error(LEXWARNING, NULLNODE, fmt, ap, class);
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}
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va_end(ap);
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}
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/*VARARGS*/
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void fatal(char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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{
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_error(FATAL, NULLNODE, fmt, ap, 0);
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}
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va_end(ap);
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sys_stop(S_EXIT);
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}
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/*VARARGS*/
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void crash(char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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{
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_error(CRASH, NULLNODE, fmt, ap, 0);
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}
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va_end(ap);
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#ifdef DEBUG
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sys_stop(S_ABORT);
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#else
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sys_stop(S_EXIT);
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#endif
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}
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#else
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#ifdef DEBUG
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/*VARARGS*/
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void debug(va_alist)
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va_dcl
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{
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va_list ap;
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va_start(ap);
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{
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char *fmt = va_arg(ap, char *);
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_error(VDEBUG, NULLNODE, fmt, ap, 0);
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}
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va_end(ap);
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}
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#endif /* DEBUG */
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/*VARARGS*/
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void error(va_alist)
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va_dcl
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{
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va_list ap;
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va_start(ap);
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{
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char *fmt = va_arg(ap, char *);
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_error(ERROR, NULLNODE, fmt, ap, 0);
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}
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va_end(ap);
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}
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/*VARARGS*/
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void node_error(va_alist)
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va_dcl
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{
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va_list ap;
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va_start(ap);
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{
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struct node *node = va_arg(ap, struct node *);
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char *fmt = va_arg(ap, char *);
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_error(ERROR, node, fmt, ap, 0);
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}
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va_end(ap);
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}
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/*VARARGS*/
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void warning(va_alist)
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va_dcl
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{
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va_list ap;
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va_start(ap);
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{
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int class = va_arg(ap, int);
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char *fmt = va_arg(ap, char *);
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_error(WARNING, NULLNODE, fmt, ap, class);
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}
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va_end(ap);
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}
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/*VARARGS*/
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void node_warning(va_alist)
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va_dcl
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{
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va_list ap;
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va_start(ap);
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{
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struct node *nd = va_arg(ap, struct node *);
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int class = va_arg(ap, int);
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char *fmt = va_arg(ap, char *);
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_error(WARNING, nd, fmt, ap, class);
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}
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va_end(ap);
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}
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/*VARARGS*/
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void lexerror(va_alist)
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va_dcl
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{
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va_list ap;
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va_start(ap);
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{
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char *fmt = va_arg(ap, char *);
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_error(LEXERROR, NULLNODE, fmt, ap, 0);
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}
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va_end(ap);
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}
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/*VARARGS*/
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void lexwarning(va_alist)
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va_dcl
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{
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va_list ap;
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va_start(ap);
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{
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int class = va_arg(ap, int);
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char *fmt = va_arg(ap, char *);
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_error(LEXWARNING, NULLNODE, fmt, ap, class);
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}
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va_end(ap);
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}
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/*VARARGS*/
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void fatal(va_alist)
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va_dcl
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{
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va_list ap;
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va_start(ap);
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{
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char *fmt = va_arg(ap, char *);
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_error(FATAL, NULLNODE, fmt, ap, 0);
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}
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va_end(ap);
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sys_stop(S_EXIT);
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}
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/*VARARGS*/
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void crash(va_alist)
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va_dcl
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{
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va_list ap;
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va_start(ap);
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{
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char *fmt = va_arg(ap, char *);
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_error(CRASH, NULLNODE, fmt, ap, 0);
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}
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va_end(ap);
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#ifdef DEBUG
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sys_stop(S_ABORT);
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#else
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sys_stop(S_EXIT);
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#endif
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}
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#endif
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static void _error(int class, struct node *node, char *fmt, register va_list ap, int warn_class)
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{
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/* _error attempts to limit the number of error messages
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for a given line to MAXERR_LINE.
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*/
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unsigned int ln = 0;
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register char *remark = 0;
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/* check visibility of message */
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if (class == ERROR || class == WARNING) {
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if (token_nmb < tk_nmb_at_last_syn_err + ERR_SHADOW)
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/* warning or error message overshadowed */
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return;
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}
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/* Since name and number are gathered from different places
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depending on the class, we first collect the relevant
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values and then decide what to print.
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*/
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/* preliminaries */
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switch (class) {
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case ERROR:
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case LEXERROR:
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case CRASH:
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case FATAL:
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if (C_busy()) C_ms_err();
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err_occurred = 1;
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break;
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}
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/* the remark */
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switch (class) {
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case WARNING:
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case LEXWARNING:
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if (! (warn_class & warning_classes)) return;
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switch(warn_class) {
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#ifndef STRICT_3RD_ED
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case W_OLDFASHIONED:
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remark = "(old-fashioned use)";
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break;
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#endif
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#ifndef NOSTRICT
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case W_STRICT:
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remark = "(strict)";
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break;
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#endif
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default:
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remark = "(warning)";
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break;
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}
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break;
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case CRASH:
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remark = "CRASH\007";
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break;
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case FATAL:
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remark = "fatal error --";
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break;
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#ifdef DEBUG
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case VDEBUG:
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remark = "(debug)";
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break;
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#endif /* DEBUG */
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}
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/* the place */
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switch (class) {
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case WARNING:
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case ERROR:
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ln = node ? node->nd_lineno : dot.tk_lineno;
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break;
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case LEXWARNING:
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case LEXERROR:
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case CRASH:
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case FATAL:
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#ifdef DEBUG
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case VDEBUG:
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#endif /* DEBUG */
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ln = LineNumber;
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break;
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}
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if (FileName) fprint(ERROUT, "\"%s\", line %u: ", FileName, ln);
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if (remark) fprint(ERROUT, "%s ", remark);
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doprnt(ERROUT, fmt, ap); /* contents of error */
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fprint(ERROUT, "\n");
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}
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