jcs.org
jcs's openbsd hax
openbsd
1#ifndef COND_H
2#define COND_H
3/* $OpenBSD: cond.h,v 1.5 2010/07/19 19:46:44 espie Exp $ */
4
5/*
6 * Copyright (c) 2001 Marc Espie.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD
21 * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30/* cond
31 * Parse Makefile conditionals.
32 */
33
34/* Values returned by Cond_Eval. */
35#define COND_PARSE 0 /* Parse the next lines */
36#define COND_SKIP 1 /* Skip the next lines */
37#define COND_INVALID 2 /* Not a conditional statement */
38#define COND_ISFOR 3
39#define COND_ISUNDEF 4
40#define COND_ISINCLUDE 5
41#define COND_ISPOISON 6
42
43/* whattodo = Cond_Eval(line);
44 * Parses a conditional expression (without the leading dot),
45 * and returns a decision value.
46 * State is kept internally, since conditionals nest. */
47extern int Cond_Eval(const char *);
48
49/* Cond_End();
50 * To call at end of parsing, checks that all conditionals were
51 * closed. */
52extern void Cond_End(void);
53
54#endif