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Annotation of src/usr.bin/make/cond.h, Revision 1.5

1.1       espie       1: #ifndef COND_H
                      2: #define COND_H
1.5     ! espie       3: /*     $OpenBSD: cond.h,v 1.4 2010/07/19 19:30:37 espie Exp $ */
1.1       espie       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 */
1.2       espie      38: #define COND_ISFOR     3
                     39: #define COND_ISUNDEF   4
                     40: #define COND_ISINCLUDE 5
1.3       espie      41: #define COND_ISPOISON  6
1.1       espie      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.  */
                     47: extern int Cond_Eval(const char *);
                     48:
                     49: /* Cond_End();
                     50:  *     To call at end of parsing, checks that all conditionals were
                     51:  *     closed.  */
                     52: extern void Cond_End(void);
                     53:
                     54: #endif