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 57 QT_BEGIN_NAMESPACE 58 59 namespace QtMiscUtils { toHexUpper(uint value)60Q_DECL_CONSTEXPR inline char toHexUpper(uint value) noexcept 61 { 62 return "0123456789ABCDEF"[value & 0xF]; 63 } 64 toHexLower(uint value)65Q_DECL_CONSTEXPR inline char toHexLower(uint value) noexcept 66 { 67 return "0123456789abcdef"[value & 0xF]; 68 } 69 fromHex(uint c)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 toOct(uint value)78Q_DECL_CONSTEXPR inline char toOct(uint value) noexcept 79 { 80 return '0' + char(value & 0x7); 81 } 82 fromOct(uint c)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. 90 enum { 91 MaxAllocSize = INT_MAX 92 }; 93 94 struct CalculateGrowingBlockSizeResult { 95 size_t size; 96 size_t elementCount; 97 }; 98 99 // Implemented in qarraydata.cpp: 100 size_t Q_CORE_EXPORT Q_DECL_CONST_FUNCTION 101 qCalculateBlockSize(size_t elementCount, size_t elementSize, size_t headerSize = 0) noexcept; 102 CalculateGrowingBlockSizeResult Q_CORE_EXPORT Q_DECL_CONST_FUNCTION 103 qCalculateGrowingBlockSize(size_t elementCount, size_t elementSize, size_t headerSize = 0) noexcept ; 104 105 QT_END_NAMESPACE 106 107 #endif // QTOOLS_P_H 108