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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#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/private/qglobal_p.h"
#include <limits.h>
QT_BEGIN_NAMESPACE
namespace QtMiscUtils {
constexpr inline char toHexUpper(uint value) noexcept
{
return "0123456789ABCDEF"[value & 0xF];
}
constexpr inline char toHexLower(uint value) noexcept
{
return "0123456789abcdef"[value & 0xF];
}
constexpr inline int fromHex(uint c) noexcept
{
return ((c >= '0') && (c <= '9')) ? int(c - '0') :
((c >= 'A') && (c <= 'F')) ? int(c - 'A' + 10) :
((c >= 'a') && (c <= 'f')) ? int(c - 'a' + 10) :
/* otherwise */ -1;
}
constexpr inline char toOct(uint value) noexcept
{
return char('0' + (value & 0x7));
}
constexpr inline int fromOct(uint c) noexcept
{
return ((c >= '0') && (c <= '7')) ? int(c - '0') : -1;
}
constexpr inline char toAsciiLower(char ch) noexcept
{
return (ch >= 'A' && ch <= 'Z') ? ch - 'A' + 'a' : ch;
}
constexpr inline int caseCompareAscii(char lhs, char rhs) noexcept
{
const char lhsLower = QtMiscUtils::toAsciiLower(lhs);
const char rhsLower = QtMiscUtils::toAsciiLower(rhs);
return int(uchar(lhsLower)) - int(uchar(rhsLower));
}
}
// We typically need an extra bit for qNextPowerOfTwo when determining the next allocation size.
constexpr qsizetype MaxAllocSize = (std::numeric_limits<qsizetype>::max)();
struct CalculateGrowingBlockSizeResult
{
qsizetype size;
qsizetype elementCount;
};
// Implemented in qarraydata.cpp:
qsizetype Q_CORE_EXPORT Q_DECL_CONST_FUNCTION
qCalculateBlockSize(qsizetype elementCount, qsizetype elementSize, qsizetype headerSize = 0) noexcept;
CalculateGrowingBlockSizeResult Q_CORE_EXPORT Q_DECL_CONST_FUNCTION
qCalculateGrowingBlockSize(qsizetype elementCount, qsizetype elementSize, qsizetype headerSize = 0) noexcept ;
QT_END_NAMESPACE
#endif // QTOOLS_P_H
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