1/****************************************************************************
2**
3** Copyright (C) 2019 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtCore 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
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39
40#ifndef QTOOLS_P_H
41#define QTOOLS_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 for the convenience
48// of other Qt classes. 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/private/qglobal_p.h"
55#include <limits.h>
56
57QT_BEGIN_NAMESPACE
58
59namespace QtMiscUtils {
60Q_DECL_CONSTEXPR inline char toHexUpper(uint value) noexcept
61{
62 return "0123456789ABCDEF"[value & 0xF];
63}
64
65Q_DECL_CONSTEXPR inline char toHexLower(uint value) noexcept
66{
67 return "0123456789abcdef"[value & 0xF];
68}
69
70Q_DECL_CONSTEXPR inline int fromHex(uint c) noexcept
71{
72 return ((c >= '0') && (c <= '9')) ? int(c - '0') :
73 ((c >= 'A') && (c <= 'F')) ? int(c - 'A' + 10) :
74 ((c >= 'a') && (c <= 'f')) ? int(c - 'a' + 10) :
75 /* otherwise */ -1;
76}
77
78Q_DECL_CONSTEXPR inline char toOct(uint value) noexcept
79{
80 return '0' + char(value & 0x7);
81}
82
83Q_DECL_CONSTEXPR inline int fromOct(uint c) noexcept
84{
85 return ((c >= '0') && (c <= '7')) ? int(c - '0') : -1;
86}
87}
88
89// We typically need an extra bit for qNextPowerOfTwo when determining the next allocation size.
90enum {
91 MaxAllocSize = INT_MAX
92};
93
94struct CalculateGrowingBlockSizeResult {
95 size_t size;
96 size_t elementCount;
97};
98
99// Implemented in qarraydata.cpp:
100size_t Q_CORE_EXPORT Q_DECL_CONST_FUNCTION
101qCalculateBlockSize(size_t elementCount, size_t elementSize, size_t headerSize = 0) noexcept;
102CalculateGrowingBlockSizeResult Q_CORE_EXPORT Q_DECL_CONST_FUNCTION
103qCalculateGrowingBlockSize(size_t elementCount, size_t elementSize, size_t headerSize = 0) noexcept ;
104
105QT_END_NAMESPACE
106
107#endif // QTOOLS_P_H
108

source code of qtbase/src/corelib/tools/qtools_p.h