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Part one of the C preprocessor This is part one of the C preprocessor. It finds and then fails to intepret directives. Also handles line splicing and trigraphs.
author William Astle <lost@l-w.ca>
date Sun, 08 Sep 2013 21:58:12 -0600
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291:83f682ed4d65 292:40ecbd5da481
1 /*
2 lwcc/cpp/error.c
3
4 Copyright © 2013 William Astle
5
6 This file is part of LWTOOLS.
7
8 LWTOOLS is free software: you can redistribute it and/or modify it under the
9 terms of the GNU General Public License as published by the Free Software
10 Foundation, either version 3 of the License, or (at your option) any later
11 version.
12
13 This program is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 more details.
17
18 You should have received a copy of the GNU General Public License along with
19 this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22 #include <stdarg.h>
23 #include <stdio.h>
24 #include <stdlib.h>
25
26 #include "cpp.h"
27
28 static void show_file_pos(void)
29 {
30 if (file_stack == NULL)
31 return;
32
33 fprintf(stderr, "(%s:%d): ", file_stack -> fn, file_stack -> line);
34 }
35
36 void do_error(const char *f, ...)
37 {
38 va_list arg;
39
40 va_start(arg, f);
41 fprintf(stderr, "ERROR: ");
42 show_file_pos();
43 vfprintf(stderr, f, arg);
44 fprintf(stderr, "\n");
45 va_end(arg);
46 exit(1);
47 }
48
49 void do_warning(const char *f, ...)
50 {
51 va_list arg;
52
53 va_start(arg, f);
54 fprintf(stderr, "WARNING: ");
55 show_file_pos();
56 vfprintf(stderr, f, arg);
57 fprintf(stderr, "\n");
58 va_end(arg);
59 }