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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/cpp.h
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 #ifndef cpp_h_seen___
23 #define cpp_h_seen___
24
25 #include <stdio.h>
26
27 enum
28 {
29 CPP_NOUNG = -3,
30 CPP_EOL = -2,
31 CPP_EOF = -1,
32 };
33
34 struct file_stack_e
35 {
36 const char *fn;
37 FILE *fp;
38 struct file_stack_e *next;
39 int line;
40 int col;
41 int eolstate; // end of line state for interpreting \r\n \n\r \n \r
42 int ra; // read ahead byte for trigraph scan
43 int qseen; // number of ? seen during trigraph scan
44 int unget; // character that has been "ungot"
45 int curc; // the most recent character retrieved
46 };
47
48 extern FILE *output_fp;
49 extern int trigraphs;
50 extern struct file_stack_e *file_stack;
51
52 extern int process_file(const char *);
53
54 extern void do_error(const char *, ...);
55 extern void do_warning(const char *, ...);
56
57 #endif // cpp_h_seen___