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-/* $NetBSD: lstInt.h,v 1.20 2009/01/24 14:43:29 dsl Exp $ */
-
-/*
- * Copyright (c) 1988, 1989, 1990, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Adam de Boor.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * from: @(#)lstInt.h 8.1 (Berkeley) 6/6/93
- */
-
-/*-
- * lstInt.h --
- * Internals for the list library
- */
-#ifndef _LSTINT_H_
-#define _LSTINT_H_
-
-#include "../lst.h"
-#include "../make_malloc.h"
-
-typedef struct ListNode {
- struct ListNode *prevPtr; /* previous element in list */
- struct ListNode *nextPtr; /* next in list */
- unsigned int useCount:8, /* Count of functions using the node.
- * node may not be deleted until count
- * goes to 0 */
- flags:8; /* Node status flags */
- void *datum; /* datum associated with this element */
-} *ListNode;
-/*
- * Flags required for synchronization
- */
-#define LN_DELETED 0x0001 /* List node should be removed when done */
-
-typedef enum {
- Head, Middle, Tail, Unknown
-} Where;
-
-typedef struct List {
- ListNode firstPtr; /* first node in list */
- ListNode lastPtr; /* last node in list */
- Boolean isCirc; /* true if the list should be considered
- * circular */
-/*
- * fields for sequential access
- */
- Where atEnd; /* Where in the list the last access was */
- Boolean isOpen; /* true if list has been Lst_Open'ed */
- ListNode curPtr; /* current node, if open. NULL if
- * *just* opened */
- ListNode prevPtr; /* Previous node, if open. Used by
- * Lst_Remove */
-} *List;
-
-/*
- * PAlloc (var, ptype) --
- * Allocate a pointer-typedef structure 'ptype' into the variable 'var'
- */
-#define PAlloc(var,ptype) var = (ptype) bmake_malloc(sizeof *(var))
-
-/*
- * LstValid (l) --
- * Return TRUE if the list l is valid
- */
-#define LstValid(l) ((Lst)(l) != NULL)
-
-/*
- * LstNodeValid (ln, l) --
- * Return TRUE if the LstNode ln is valid with respect to l
- */
-#define LstNodeValid(ln, l) ((ln) != NULL)
-
-/*
- * LstIsEmpty (l) --
- * TRUE if the list l is empty.
- */
-#define LstIsEmpty(l) (((List)(l))->firstPtr == NULL)
-
-#endif /* _LSTINT_H_ */
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