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qbitfield_p.h #1

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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
5**-
6** This file is part of the QtQml module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL$-
9** Commercial License Usage-
10** Licensees holding valid commercial Qt licenses may use this file in-
11** accordance with the commercial license agreement provided with the-
12** Software or, alternatively, in accordance with the terms contained in-
13** a written agreement between you and The Qt Company. For licensing terms-
14** and conditions see https://www.qt.io/terms-conditions. For further-
15** information use the contact form at https://www.qt.io/contact-us.-
16**-
17** GNU Lesser General Public License Usage-
18** Alternatively, this file may be used under the terms of the GNU Lesser-
19** General Public License version 3 as published by the Free Software-
20** Foundation and appearing in the file LICENSE.LGPL3 included in the-
21** packaging of this file. Please review the following information to-
22** ensure the GNU Lesser General Public License version 3 requirements-
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.-
24**-
25** GNU General Public License Usage-
26** Alternatively, this file may be used under the terms of the GNU-
27** General Public License version 2.0 or (at your option) the GNU General-
28** Public license version 3 or any later version approved by the KDE Free-
29** Qt Foundation. The licenses are as published by the Free Software-
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3-
31** included in the packaging of this file. Please review the following-
32** information to ensure the GNU General Public License requirements will-
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35**-
36** $QT_END_LICENSE$-
37**-
38****************************************************************************/-
39-
40#ifndef QBITFIELD_P_H-
41#define QBITFIELD_P_H-
42-
43//-
44// W A R N I N G-
45// --------------
46//-
47// This file is not part of the Qt API. It exists purely as an-
48// implementation detail. This header file may change from version to-
49// version without notice, or even be removed.-
50//-
51// We mean it.-
52//-
53-
54#include <QtCore/qglobal.h>-
55#include <QtCore/qtypeinfo.h>-
56-
57QT_BEGIN_NAMESPACE-
58-
59class QBitField-
60{-
61public:-
62 inline QBitField();-
63 inline QBitField(const quint32 *, int bits);-
64 inline QBitField(const QBitField &);-
65 inline ~QBitField();-
66-
67 inline QBitField &operator=(const QBitField &);-
68-
69 inline quint32 size() const;-
70 inline QBitField united(const QBitField &);-
71 inline bool testBit(int) const;-
72-
73private:-
74 quint32 bits:31;-
75 quint32 *ownData;-
76 const quint32 *data;-
77};-
78-
79QBitField::QBitField()-
80: bits(0), ownData(nullptr), data(nullptr)-
81{-
82}
never executed: end of block
0
83-
84QBitField::QBitField(const quint32 *bitData, int bitCount)-
85: bits((quint32)bitCount), ownData(nullptr), data(bitData)-
86{-
87}
never executed: end of block
0
88-
89QBitField::QBitField(const QBitField &other)-
90: bits(other.bits), ownData(other.ownData), data(other.data)-
91{-
92 if (ownData)
ownDataDescription
TRUEnever evaluated
FALSEnever evaluated
0
93 ++(*ownData);
never executed: ++(*ownData);
0
94}
never executed: end of block
0
95-
96QBitField::~QBitField()-
97{-
98 if (ownData)
ownDataDescription
TRUEnever evaluated
FALSEnever evaluated
0
99 if(0 == --(*ownData)) delete [] ownData;
never executed: delete [] ownData;
0 == --(*ownData)Description
TRUEnever evaluated
FALSEnever evaluated
0
100}
never executed: end of block
0
101-
102QBitField &QBitField::operator=(const QBitField &other)-
103{-
104 if (other.data == data)
other.data == dataDescription
TRUEnever evaluated
FALSEnever evaluated
0
105 return *this;
never executed: return *this;
0
106-
107 if (ownData)
ownDataDescription
TRUEnever evaluated
FALSEnever evaluated
0
108 if(0 == --(*ownData)) delete [] ownData;
never executed: delete [] ownData;
0 == --(*ownData)Description
TRUEnever evaluated
FALSEnever evaluated
0
109-
110 bits = other.bits;-
111 ownData = other.ownData;-
112 data = other.data;-
113-
114 if (ownData)
ownDataDescription
TRUEnever evaluated
FALSEnever evaluated
0
115 ++(*ownData);
never executed: ++(*ownData);
0
116-
117 return *this;
never executed: return *this;
0
118}-
119-
120inline quint32 QBitField::size() const-
121{-
122 return bits;
never executed: return bits;
0
123}-
124-
125QBitField QBitField::united(const QBitField &o)-
126{-
127 if (o.bits == 0) {
o.bits == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
128 return *this;
never executed: return *this;
0
129 } else if (bits == 0) {
bits == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
130 return o;
never executed: return o;
0
131 } else {-
132 int max = (bits > o.bits)?bits:o.bits;
(bits > o.bits)Description
TRUEnever evaluated
FALSEnever evaluated
0
133 int length = (max + 31) / 32;-
134 QBitField rv;-
135 rv.bits = max;-
136 rv.ownData = new quint32[length + 1];-
137 *(rv.ownData) = 1;-
138 quint32 *rvdata;-
139 rv.data = rvdata = rv.ownData + 1;-
140 if (bits > o.bits) {
bits > o.bitsDescription
TRUEnever evaluated
FALSEnever evaluated
0
141 ::memcpy(rvdata, data, length * sizeof(quint32));-
142 for (quint32 ii = 0; ii < (o.bits + quint32(31)) / 32; ++ii)
ii < (o.bits +...nt32(31)) / 32Description
TRUEnever evaluated
FALSEnever evaluated
0
143 (rvdata)[ii] |= o.data[ii];
never executed: (rvdata)[ii] |= o.data[ii];
0
144 } else {
never executed: end of block
0
145 ::memcpy(rvdata, o.data, length * sizeof(quint32));-
146 for (quint32 ii = 0; ii < (bits + quint32(31)) / 32; ++ii)
ii < (bits + quint32(31)) / 32Description
TRUEnever evaluated
FALSEnever evaluated
0
147 (rvdata)[ii] |= data[ii];
never executed: (rvdata)[ii] |= data[ii];
0
148 }
never executed: end of block
0
149 return rv;
never executed: return rv;
0
150 }-
151}-
152-
153bool QBitField::testBit(int b) const-
154{-
155 Q_ASSERT(b >= 0);-
156 if ((quint32)b < bits) {
(quint32)b < bitsDescription
TRUEnever evaluated
FALSEnever evaluated
0
157 return data[b / 32] & (1 << (b % 32));
never executed: return data[b / 32] & (1 << (b % 32));
0
158 } else {-
159 return false;
never executed: return false;
0
160 }-
161}-
162-
163Q_DECLARE_TYPEINFO(QBitField, Q_MOVABLE_TYPE);-
164-
165QT_END_NAMESPACE-
166-
167#endif // QBITFIELD_P_H-
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