xref: /openbsd/usr.bin/make/lst.lib/lstInit.c (revision df930be7)
1 /*	$NetBSD: lstInit.c,v 1.4 1995/06/14 15:21:18 christos Exp $	*/
2 
3 /*
4  * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * Adam de Boor.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. All advertising materials mentioning features or use of this software
19  *    must display the following acknowledgement:
20  *	This product includes software developed by the University of
21  *	California, Berkeley and its contributors.
22  * 4. Neither the name of the University nor the names of its contributors
23  *    may be used to endorse or promote products derived from this software
24  *    without specific prior written permission.
25  *
26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36  * SUCH DAMAGE.
37  */
38 
39 #ifndef lint
40 #if 0
41 static char sccsid[] = "@(#)lstInit.c	5.4 (Berkeley) 12/28/90";
42 #else
43 static char rcsid[] = "$NetBSD: lstInit.c,v 1.4 1995/06/14 15:21:18 christos Exp $";
44 #endif
45 #endif /* not lint */
46 
47 /*-
48  * init.c --
49  *	Initialize a new linked list.
50  */
51 
52 #include	"lstInt.h"
53 
54 /*-
55  *-----------------------------------------------------------------------
56  * Lst_Init --
57  *	Create and initialize a new list.
58  *
59  * Results:
60  *	The created list.
61  *
62  * Side Effects:
63  *	A list is created, what else?
64  *
65  *-----------------------------------------------------------------------
66  */
67 Lst
68 Lst_Init(circ)
69     Boolean		circ;	/* TRUE if the list should be made circular */
70 {
71     register List	nList;
72 
73     PAlloc (nList, List);
74 
75     nList->firstPtr = NilListNode;
76     nList->lastPtr = NilListNode;
77     nList->isOpen = FALSE;
78     nList->isCirc = circ;
79     nList->atEnd = Unknown;
80 
81     return ((Lst)nList);
82 }
83