usr/src/usr.bin/make/lst.lib/lstInit.c

/*
 * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Adam de Boor.
 *
 * %sccs.include.redist.c%
 */

#ifndef lint
static char sccsid[] = "@(#)lstInit.c   5.4 (Berkeley) %G%";
#endif /* not lint */

/*-
 * init.c --
 *      Initialize a new linked list.
 */

#include        "lstInt.h"

/*-
 *-----------------------------------------------------------------------
 * Lst_Init --
 *      Create and initialize a new list.
 *
 * Results:
 *      The created list.
 *
 * Side Effects:
 *      A list is created, what else?
 *
 *-----------------------------------------------------------------------
 */
Lst
Lst_Init(circ)
    Boolean             circ;   /* TRUE if the list should be made circular */
{
    register List       nList;

    PAlloc (nList, List);

    nList->firstPtr = NilListNode;
    nList->lastPtr = NilListNode;
    nList->isOpen = FALSE;
    nList->isCirc = circ;
    nList->atEnd = Unknown;

    return ((Lst)nList);
}