summaryrefslogtreecommitdiffstats
path: root/src/corelib/tools/qtools_p.h
blob: b48ed94236dc3328f04d54be8dbb3f3d25da50a5 (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
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QTOOLS_P_H
#define QTOOLS_P_H

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

#include "QtCore/qglobal.h"
#include <limits>

QT_BEGIN_NAMESPACE

namespace QtMiscUtils {
Q_DECL_CONSTEXPR inline char toHexUpper(uint value) Q_DECL_NOTHROW
{
    return "0123456789ABCDEF"[value & 0xF];
}

Q_DECL_CONSTEXPR inline char toHexLower(uint value) Q_DECL_NOTHROW
{
    return "0123456789abcdef"[value & 0xF];
}

Q_DECL_CONSTEXPR inline int fromHex(uint c) Q_DECL_NOTHROW
{
    return ((c >= '0') && (c <= '9')) ? c - '0' :
           ((c >= 'A') && (c <= 'F')) ? c - 'A' + 10 :
           ((c >= 'a') && (c <= 'f')) ? c - 'a' + 10 :
           /* otherwise */              -1;
}

Q_DECL_CONSTEXPR inline char toOct(uint value) Q_DECL_NOTHROW
{
    return '0' + char(value & 0x7);
}

Q_DECL_CONSTEXPR inline int fromOct(uint c) Q_DECL_NOTHROW
{
    return ((c >= '0') && (c <= '7')) ? c - '0' : -1;
}
}

// We typically need an extra bit for qNextPowerOfTwo when determining the next allocation size.
enum {
    MaxAllocSize = (1 << (std::numeric_limits<int>::digits - 1)) - 1
};

// implemented in qbytearray.cpp
int Q_CORE_EXPORT qAllocMore(int alloc, int extra) Q_DECL_NOTHROW;

QT_END_NAMESPACE

#endif // QTOOLS_P_H