1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/*************************************************************************
*
* $RCSfile: stgavl.hxx,v $
*
* $Revision: 1.1.1.1 $
*
* last change: $Author: hr $ $Date: 2000-09-18 16:56:51 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://www.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
#ifndef _STGAVL_HXX
#define _STGAVL_HXX
#ifndef _TOOLS_SOLAR_H
#include <tools/solar.h>
#endif
// This class must be overloaded to define real, living nodes.
// Especially, the compare function must be implemented.
class StgAvlNode
{
friend class StgAvlIterator;
private:
short Locate( StgAvlNode*, StgAvlNode**, StgAvlNode**, StgAvlNode** );
short Adjust( StgAvlNode**, StgAvlNode* );
StgAvlNode* RotLL();
StgAvlNode* RotLR();
StgAvlNode* RotRR();
StgAvlNode* RotRL();
void Enum( short& );
static StgAvlNode* Rem( StgAvlNode**, StgAvlNode*, BOOL );
protected:
short nId; // iterator ID
short nBalance; // indicates tree balance
StgAvlNode* pLeft, *pRight; // leaves
StgAvlNode();
public:
virtual ~StgAvlNode();
StgAvlNode* Find( StgAvlNode* );
static BOOL Insert( StgAvlNode**, StgAvlNode* );
static BOOL Remove( StgAvlNode**, StgAvlNode*, BOOL bDel = TRUE );
static BOOL Move( StgAvlNode**, StgAvlNode**, StgAvlNode* );
virtual short Compare( const StgAvlNode* ) const = 0;
};
// The iterator class provides single stepping through an AVL tree.
class StgAvlIterator {
StgAvlNode* pRoot; // root entry (parent)
short nCount; // tree size
short nCur; // current element
StgAvlNode* Find( short );
public:
StgAvlIterator( StgAvlNode* );
StgAvlNode* First();
StgAvlNode* Last();
StgAvlNode* Next();
StgAvlNode* Prev();
};
#endif
|
