diff options
Diffstat (limited to 'src/corelib/tools/qoffsetstringarray_p.h')
| -rw-r--r-- | src/corelib/tools/qoffsetstringarray_p.h | 86 |
1 files changed, 27 insertions, 59 deletions
diff --git a/src/corelib/tools/qoffsetstringarray_p.h b/src/corelib/tools/qoffsetstringarray_p.h index 8bd7d79afb..9103606a13 100644 --- a/src/corelib/tools/qoffsetstringarray_p.h +++ b/src/corelib/tools/qoffsetstringarray_p.h @@ -1,42 +1,6 @@ -/**************************************************************************** -** -** Copyright (C) 2020 The Qt Company Ltd. -** Copyright (C) 2021 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. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2020 The Qt Company Ltd. +// Copyright (C) 2021 Intel Corporation. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #ifndef QOFFSETSTRINGARRAY_P_H #define QOFFSETSTRINGARRAY_P_H @@ -56,6 +20,7 @@ #include <QByteArrayView> +#include <QtCore/q20algorithm.h> #include <array> #include <limits> #include <string_view> @@ -66,7 +31,7 @@ class tst_QOffsetStringArray; QT_BEGIN_NAMESPACE QT_WARNING_PUSH -#if defined(Q_CC_GNU) && Q_CC_GNU >= 1100 +#if defined(Q_CC_GNU_ONLY) && Q_CC_GNU >= 1100 // we usually don't overread, but GCC has a false positive QT_WARNING_DISABLE_GCC("-Wstringop-overread") #endif @@ -98,6 +63,15 @@ public: constexpr int count() const { return int(m_offsets.size()) - 1; } + bool contains(QByteArrayView needle, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept + { + for (qsizetype i = 0; i < count(); ++i) { + if (viewAt(i).compare(needle, cs) == 0) + return true; + } + return false; + } + private: StaticString m_string; OffsetList m_offsets; @@ -105,21 +79,13 @@ private: }; namespace QtPrivate { -// std::copy is not constexpr in C++17 -template <typename II, typename OO> -static constexpr OO copyData(II input, qsizetype n, OO output) -{ - using E = decltype(+*output); - for (qsizetype i = 0; i < n; ++i) - output[i] = E(input[i]); - return output + n; -} - template <size_t Highest> constexpr auto minifyValue() { - if constexpr (Highest <= std::numeric_limits<quint8>::max()) { + constexpr size_t max8 = (std::numeric_limits<quint8>::max)(); + constexpr size_t max16 = (std::numeric_limits<quint16>::max)(); + if constexpr (Highest <= max8) { return quint8(Highest); - } else if constexpr (Highest <= std::numeric_limits<quint16>::max()) { + } else if constexpr (Highest <= max16) { return quint16(Highest); } else { // int is probably enough for everyone @@ -136,7 +102,7 @@ constexpr auto makeStaticString(Extractor extract, const T &... entries) const char *strings[] = { extract(entries).operator const char *()... }; size_t lengths[] = { sizeof(extract(T{}))... }; for (size_t i = 0; i < std::size(strings); ++i) { - copyData(strings[i], lengths[i], result.begin() + offset); + q20::copy_n(strings[i], lengths[i], result.begin() + offset); offset += lengths[i]; } return result; @@ -146,7 +112,7 @@ template <size_t N> struct StaticString { char value[N] = {}; constexpr StaticString() = default; - constexpr StaticString(const char (&s)[N]) { copyData(s, N, value); } + constexpr StaticString(const char (&s)[N]) { q20::copy_n(s, N, value); } constexpr operator const char *() const { return value; } }; @@ -161,10 +127,10 @@ template <size_t KL, size_t VL> struct StaticMapEntry }; template <typename StringExtractor, typename... T> -constexpr auto qOffsetStringArray(StringExtractor extractString, const T &... entries) +constexpr auto makeOffsetStringArray(StringExtractor extractString, const T &... entries) { constexpr size_t Count = sizeof...(T); - constexpr qsizetype StringLength = (sizeof(extractString(T{})) + ...); + constexpr size_t StringLength = (sizeof(extractString(T{})) + ...); using MinifiedOffsetType = decltype(QtPrivate::minifyValue<StringLength>()); size_t offset = 0; @@ -172,18 +138,20 @@ constexpr auto qOffsetStringArray(StringExtractor extractString, const T &... en // prepend zero std::array<MinifiedOffsetType, Count + 1> minifiedOffsetList = {}; - QtPrivate::copyData(fullOffsetList.begin(), Count, minifiedOffsetList.begin() + 1); + q20::transform(fullOffsetList.begin(), fullOffsetList.end(), + minifiedOffsetList.begin() + 1, + [] (auto e) { return MinifiedOffsetType(e); }); std::array staticString = QtPrivate::makeStaticString<StringLength>(extractString, entries...); return QOffsetStringArray(staticString, minifiedOffsetList); } -} +} // namespace QtPrivate template<int ... Nx> constexpr auto qOffsetStringArray(const char (&...strings)[Nx]) noexcept { auto extractString = [](const auto &s) -> decltype(auto) { return s; }; - return QtPrivate::qOffsetStringArray(extractString, QtPrivate::StaticString(strings)...); + return QtPrivate::makeOffsetStringArray(extractString, QtPrivate::StaticString(strings)...); } QT_WARNING_POP |