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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt3Support module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef Q3GCACHE_H
#define Q3GCACHE_H
#include <Qt3Support/q3ptrcollection.h>
#include <Qt3Support/q3glist.h>
#include <Qt3Support/q3gdict.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Qt3SupportLight)
class Q3CList; // internal classes
class Q3CListIt;
class Q3CDict;
class Q_COMPAT_EXPORT Q3GCache : public Q3PtrCollection // generic LRU cache
{
friend class Q3GCacheIterator;
protected:
enum KeyType { StringKey, AsciiKey, IntKey, PtrKey };
// identical to Q3GDict's, but PtrKey is not used at the moment
Q3GCache(int maxCost, uint size, KeyType kt, bool caseSensitive,
bool copyKeys);
Q3GCache(const Q3GCache &); // not allowed, calls fatal()
~Q3GCache();
Q3GCache &operator=(const Q3GCache &); // not allowed, calls fatal()
uint count() const;
uint size() const;
int maxCost() const { return mCost; }
int totalCost() const { return tCost; }
void setMaxCost(int maxCost);
void clear();
bool insert_string(const QString &key, Q3PtrCollection::Item,
int cost, int priority);
bool insert_other(const char *key, Q3PtrCollection::Item,
int cost, int priority);
bool remove_string(const QString &key);
bool remove_other(const char *key);
Q3PtrCollection::Item take_string(const QString &key);
Q3PtrCollection::Item take_other(const char *key);
Q3PtrCollection::Item find_string(const QString &key, bool ref=true) const;
Q3PtrCollection::Item find_other(const char *key, bool ref=true) const;
void statistics() const;
private:
bool makeRoomFor(int cost, int priority = -1);
KeyType keytype;
Q3CList *lruList;
Q3CDict *dict;
int mCost;
int tCost;
bool copyk;
};
class Q_COMPAT_EXPORT Q3GCacheIterator // generic cache iterator
{
protected:
Q3GCacheIterator(const Q3GCache &);
Q3GCacheIterator(const Q3GCacheIterator &);
~Q3GCacheIterator();
Q3GCacheIterator &operator=(const Q3GCacheIterator &);
uint count() const;
bool atFirst() const;
bool atLast() const;
Q3PtrCollection::Item toFirst();
Q3PtrCollection::Item toLast();
Q3PtrCollection::Item get() const;
QString getKeyString() const;
const char *getKeyAscii() const;
long getKeyInt() const;
Q3PtrCollection::Item operator()();
Q3PtrCollection::Item operator++();
Q3PtrCollection::Item operator+=(uint);
Q3PtrCollection::Item operator--();
Q3PtrCollection::Item operator-=(uint);
protected:
Q3CListIt *it; // iterator on cache list
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // Q3GCACHE_H
|
