summaryrefslogtreecommitdiffstats
path: root/src/corelib/tools/qdatetime_p.h
blob: 3c9d453977bcd25a9113746aa07dbdd17098d242 (plain)
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
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Copyright (C) 2016 Intel Corporation.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QDATETIME_P_H
#define QDATETIME_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "qplatformdefs.h"
#include "QtCore/qatomic.h"
#include "QtCore/qdatetime.h"
#include "QtCore/qpair.h"

#include "qtimezone.h"

QT_BEGIN_NAMESPACE

class QDateTimePrivate
{
public:
    // Never change or delete this enum, it is required for backwards compatible
    // serialization of QDateTime before 5.2, so is essentially public API
    enum Spec {
        LocalUnknown = -1,
        LocalStandard = 0,
        LocalDST = 1,
        UTC = 2,
        OffsetFromUTC = 3,
        TimeZone = 4
    };

    // Daylight Time Status
    enum DaylightStatus {
        UnknownDaylightTime = -1,
        StandardTime = 0,
        DaylightTime = 1
    };

    // Status of date/time
    enum StatusFlag {
        ShortData           = 0x01,

        ValidDate           = 0x02,
        ValidTime           = 0x04,
        ValidDateTime       = 0x08,

        TimeSpecMask        = 0x30,

        SetToStandardTime   = 0x40,
        SetToDaylightTime   = 0x80
    };
    Q_DECLARE_FLAGS(StatusFlags, StatusFlag)

    enum {
        TimeSpecShift = 4,
        ValidityMask        = ValidDate | ValidTime | ValidDateTime,
        DaylightMask        = SetToStandardTime | SetToDaylightTime
    };

    QDateTimePrivate() : m_msecs(0),
                         m_status(StatusFlag(Qt::LocalTime << TimeSpecShift)),
                         m_offsetFromUtc(0),
                         ref(0)
    {
    }

    QDateTimePrivate(const QDate &toDate, const QTime &toTime, Qt::TimeSpec toSpec,
                     int offsetSeconds);

#ifndef QT_BOOTSTRAPPED
    QDateTimePrivate(const QDate &toDate, const QTime &toTime, const QTimeZone & timeZone);
#endif // QT_BOOTSTRAPPED

    qint64 m_msecs;
    StatusFlags m_status;
    int m_offsetFromUtc;
    mutable QAtomicInt ref;
#ifndef QT_BOOTSTRAPPED
    QTimeZone m_timeZone;
#endif // QT_BOOTSTRAPPED

    void setTimeSpec(Qt::TimeSpec spec, int offsetSeconds);
    void setDateTime(const QDate &date, const QTime &time);
    QPair<QDate, QTime> getDateTime() const;

    void setDaylightStatus(DaylightStatus status);
    DaylightStatus daylightStatus() const;

    // Returns msecs since epoch, assumes offset value is current
    inline qint64 toMSecsSinceEpoch() const;

    void checkValidDateTime();
    void refreshDateTime();

    // Get/set date and time status
    inline bool isNullDate() const { return !(m_status & ValidDate); }
    inline bool isNullTime() const { return !(m_status & ValidTime); }
    inline bool isValidDate() const { return m_status & ValidDate; }
    inline bool isValidTime() const { return m_status & ValidTime; }
    inline bool isValidDateTime() const { return m_status & ValidDateTime; }
    inline void setValidDateTime() { m_status |= ValidDateTime; }
    inline void clearValidDateTime() { m_status &= ~ValidDateTime; }
    inline void clearSetToDaylightStatus() { m_status &= ~(SetToStandardTime | SetToDaylightTime); }

    inline Qt::TimeSpec spec() const { return Qt::TimeSpec((m_status & TimeSpecMask) >> TimeSpecShift); }
    inline void setSpec(Qt::TimeSpec spec)
    { m_status  &= ~TimeSpecMask; m_status |= StatusFlag(uint(spec) << TimeSpecShift); }

#ifndef QT_BOOTSTRAPPED
    static qint64 zoneMSecsToEpochMSecs(qint64 msecs, const QTimeZone &zone,
                                        QDate *localDate = 0, QTime *localTime = 0);
#endif // QT_BOOTSTRAPPED

    static inline qint64 minJd() { return QDate::minJd(); }
    static inline qint64 maxJd() { return QDate::maxJd(); }
};

QT_END_NAMESPACE

#endif // QDATETIME_P_H