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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QBITARRAY_H
#define QBITARRAY_H
#include <QtCore/qbytearray.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Core)
class QBitRef;
class Q_CORE_EXPORT QBitArray
{
friend Q_CORE_EXPORT QDataStream &operator<<(QDataStream &, const QBitArray &);
friend Q_CORE_EXPORT QDataStream &operator>>(QDataStream &, QBitArray &);
friend Q_CORE_EXPORT uint qHash(const QBitArray &key);
QByteArray d;
public:
inline QBitArray() {}
explicit QBitArray(int size, bool val = false);
QBitArray(const QBitArray &other) : d(other.d) {}
inline QBitArray &operator=(const QBitArray &other) { d = other.d; return *this; }
#ifdef Q_COMPILER_RVALUE_REFS
inline QBitArray &operator=(QBitArray &&other)
{ qSwap(d, other.d); return *this; }
#endif
inline void swap(QBitArray &other) { qSwap(d, other.d); }
inline int size() const { return (d.size() << 3) - *d.constData(); }
inline int count() const { return (d.size() << 3) - *d.constData(); }
int count(bool on) const;
// ### Qt 5: Store the number of set bits separately
inline bool isEmpty() const { return d.isEmpty(); }
inline bool isNull() const { return d.isNull(); }
void resize(int size);
inline void detach() { d.detach(); }
inline bool isDetached() const { return d.isDetached(); }
inline void clear() { d.clear(); }
bool testBit(int i) const;
void setBit(int i);
void setBit(int i, bool val);
void clearBit(int i);
bool toggleBit(int i);
bool at(int i) const;
QBitRef operator[](int i);
bool operator[](int i) const;
QBitRef operator[](uint i);
bool operator[](uint i) const;
QBitArray& operator&=(const QBitArray &);
QBitArray& operator|=(const QBitArray &);
QBitArray& operator^=(const QBitArray &);
QBitArray operator~() const;
inline bool operator==(const QBitArray& a) const { return d == a.d; }
inline bool operator!=(const QBitArray& a) const { return d != a.d; }
inline bool fill(bool val, int size = -1);
void fill(bool val, int first, int last);
inline void truncate(int pos) { if (pos < size()) resize(pos); }
public:
typedef QByteArray::DataPtr DataPtr;
inline DataPtr &data_ptr() { return d.data_ptr(); }
};
inline bool QBitArray::fill(bool aval, int asize)
{ *this = QBitArray((asize < 0 ? this->size() : asize), aval); return true; }
Q_CORE_EXPORT QBitArray operator&(const QBitArray &, const QBitArray &);
Q_CORE_EXPORT QBitArray operator|(const QBitArray &, const QBitArray &);
Q_CORE_EXPORT QBitArray operator^(const QBitArray &, const QBitArray &);
inline bool QBitArray::testBit(int i) const
{ Q_ASSERT(i >= 0 && i < size());
return (*(reinterpret_cast<const uchar*>(d.constData())+1+(i>>3)) & (1 << (i & 7))) != 0; }
inline void QBitArray::setBit(int i)
{ Q_ASSERT(i >= 0 && i < size());
*(reinterpret_cast<uchar*>(d.data())+1+(i>>3)) |= uchar(1 << (i & 7)); }
inline void QBitArray::clearBit(int i)
{ Q_ASSERT(i >= 0 && i < size());
*(reinterpret_cast<uchar*>(d.data())+1+(i>>3)) &= ~uchar(1 << (i & 7)); }
inline void QBitArray::setBit(int i, bool val)
{ if (val) setBit(i); else clearBit(i); }
inline bool QBitArray::toggleBit(int i)
{ Q_ASSERT(i >= 0 && i < size());
uchar b = uchar(1<<(i&7)); uchar* p = reinterpret_cast<uchar*>(d.data())+1+(i>>3);
uchar c = uchar(*p&b); *p^=b; return c!=0; }
inline bool QBitArray::operator[](int i) const { return testBit(i); }
inline bool QBitArray::operator[](uint i) const { return testBit(i); }
inline bool QBitArray::at(int i) const { return testBit(i); }
class Q_CORE_EXPORT QBitRef
{
private:
QBitArray& a;
int i;
inline QBitRef(QBitArray& array, int idx) : a(array), i(idx) {}
friend class QBitArray;
public:
inline operator bool() const { return a.testBit(i); }
inline bool operator!() const { return !a.testBit(i); }
QBitRef& operator=(const QBitRef& val) { a.setBit(i, val); return *this; }
QBitRef& operator=(bool val) { a.setBit(i, val); return *this; }
};
inline QBitRef QBitArray::operator[](int i)
{ Q_ASSERT(i >= 0); return QBitRef(*this, i); }
inline QBitRef QBitArray::operator[](uint i)
{ return QBitRef(*this, i); }
#ifndef QT_NO_DATASTREAM
Q_CORE_EXPORT QDataStream &operator<<(QDataStream &, const QBitArray &);
Q_CORE_EXPORT QDataStream &operator>>(QDataStream &, QBitArray &);
#endif
Q_DECLARE_TYPEINFO(QBitArray, Q_MOVABLE_TYPE);
Q_DECLARE_SHARED(QBitArray)
QT_END_NAMESPACE
QT_END_HEADER
#endif // QBITARRAY_H
|
