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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 */
- /* This file contains the (non-portable) error-message and diagnostic
- giving functions. Be aware that they are called with a variable
- number of arguments!
- */
- #include "debug.h"
- #include "errout.h"
- #include <em_arith.h>
- #include <em_code.h>
- #include <em_label.h>
- #include <system.h>
- #include "LLlex.h"
- #include "f_info.h"
- #include "input.h"
- #include "main.h"
- #include "node.h"
- /* error classes */
- #define ERROR 1
- #define WARNING 2
- #define LEXERROR 3
- #define LEXWARNING 4
- #define CRASH 5
- #define FATAL 6
- #ifdef DEBUG
- #define VDEBUG 7
- #endif
- int err_occurred;
- extern char *symbol2str();
- /* There are three general error-message functions:
- lexerror() lexical and pre-processor error messages
- error() syntactic and pre-processor messagese
- 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.
- */
- #ifdef DEBUG
- /*VARARGS1*/
- debug(fmt, args)
- char *fmt;
- {
- _error(VDEBUG, NULLNODE, fmt, &args);
- }
- #endif DEBUG
- /*VARARGS1*/
- error(fmt, args)
- char *fmt;
- {
- _error(ERROR, NULLNODE, fmt, &args);
- }
- /*VARARGS2*/
- node_error(node, fmt, args)
- struct node *node;
- char *fmt;
- {
- _error(ERROR, node, fmt, &args);
- }
- /*VARARGS1*/
- warning(fmt, args)
- char *fmt;
- {
- if( !options['w'] ) _error(WARNING, NULLNODE, fmt, &args);
- }
- /*VARARGS2*/
- node_warning(node, fmt, args)
- struct node *node;
- char *fmt;
- {
- if( !options['w'] ) _error(WARNING, node, fmt, &args);
- }
- /*VARARGS1*/
- lexerror(fmt, args)
- char *fmt;
- {
- _error(LEXERROR, NULLNODE, fmt, &args);
- }
- /*VARARGS1*/
- lexwarning(fmt, args)
- char *fmt;
- {
- if( !options['w'] ) _error(LEXWARNING, NULLNODE, fmt, &args);
- }
- /*VARARGS1*/
- fatal(fmt, args)
- char *fmt;
- {
- _error(FATAL, NULLNODE, fmt, &args);
- sys_stop(S_EXIT);
- }
- /*VARARGS1*/
- crash(fmt, args)
- char *fmt;
- {
- _error(CRASH, NULLNODE, fmt, &args);
- #ifdef DEBUG
- sys_stop(S_ABORT);
- #else
- sys_stop(S_EXIT);
- #endif
- }
- _error(class, node, fmt, argv)
- int class;
- struct node *node;
- char *fmt;
- int argv[];
- {
- /* _error attempts to limit the number of error messages
- for a given line to MAXERR_LINE.
- */
- static unsigned int last_ln = 0;
- unsigned int ln = 0;
- static char * last_fn = 0;
- static int e_seen = 0;
- register char *remark = 0;
- /* 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:
- if( C_busy() ) C_ms_err();
- err_occurred = 1;
- break;
- }
- /* the remark */
- switch( class ) {
- case WARNING:
- case LEXWARNING:
- remark = "(warning)";
- break;
- case CRASH:
- remark = "CRASH\007";
- break;
- case FATAL:
- remark = "fatal error --";
- break;
- #ifdef DEBUG
- case VDEBUG:
- remark = "(debug)";
- break;
- #endif DEBUG
- }
- /* the place */
- switch( class ) {
- case ERROR:
- case WARNING:
- ln = node ? node->nd_lineno : dot.tk_lineno;
- break;
- case LEXWARNING:
- case LEXERROR:
- case CRASH:
- case FATAL:
- #ifdef DEBUG
- case VDEBUG:
- #endif DEBUG
- ln = LineNumber;
- break;
- }
- #ifdef DEBUG
- if( class != VDEBUG ) {
- #endif
- if( FileName == last_fn && ln == last_ln ) {
- /* we've seen this place before */
- e_seen++;
- if( e_seen == MAXERR_LINE ) fmt = "etc ...";
- else if( e_seen > MAXERR_LINE )
- /* and too often, I'd say ! */
- return;
- }
- else {
- /* brand new place */
- last_ln = ln;
- last_fn = FileName;
- e_seen = 0;
- }
- #ifdef DEBUG
- }
- #endif DEBUG
- if( FileName ) fprint(ERROUT, "\"%s\", line %u: ", FileName, ln);
- if( remark ) fprint(ERROUT, "%s ", remark);
- doprnt(ERROUT, fmt, argv); /* contents of error */
- fprint(ERROUT, "\n");
- }
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