include/QtCore/qcontainerfwd.h

0001 // Copyright (C) 2020 The Qt Company Ltd.
0002 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
0003
0004 #ifndef QCONTAINERFWD_H
0005 #define QCONTAINERFWD_H
0006
0007 #include <QtCore/qtconfigmacros.h>
0008 #include <QtCore/qtypes.h>
0009
0010 #if 0
0011 #pragma qt_class(QtContainerFwd)
0012 #endif
0013
0014 // std headers can unfortunately not be forward declared
0015 #include <cstddef> // std::size_t
0016 #include <utility>
0017 #include <limits>
0018
0019 QT_BEGIN_NAMESPACE
0020
0021 template <typename Key, typename T> class QCache;
0022 template <typename Key, typename T> class QHash;
0023 template <typename Key, typename T> class QMap;
0024 template <typename Key, typename T> class QMultiHash;
0025 template <typename Key, typename T> class QMultiMap;
0026 #ifndef QT_NO_QPAIR
0027 template <typename T1, typename T2>
0028 using QPair = std::pair<T1, T2>;
0029 #endif
0030 template <typename T> class QQueue;
0031 template <typename T> class QSet;
0032 template <typename T, std::size_t E = std::size_t(-1) /* = std::dynamic_extent*/> class QSpan;
0033 template <typename T> class QStack;
0034 constexpr qsizetype QVarLengthArrayDefaultPrealloc = 256;
0035 template <typename T, qsizetype Prealloc = QVarLengthArrayDefaultPrealloc> class QVarLengthArray;
0036 template <typename T> class QList;
0037 class QString;
0038 #ifndef Q_QDOC
0039 template<typename T> using QVector = QList<T>;
0040 using QStringList = QList<QString>;
0041 class QByteArray;
0042 using QByteArrayList = QList<QByteArray>;
0043 #else
0044 template<typename T> class QVector;
0045 class QStringList;
0046 class QByteArrayList;
0047 #endif
0048 class QMetaType;
0049 class QVariant;
0050
0051 using QVariantList = QList<QVariant>;
0052 using QVariantMap = QMap<QString, QVariant>;
0053 using QVariantHash = QHash<QString, QVariant>;
0054 using QVariantPair = std::pair<QVariant, QVariant>;
0055
0056 namespace QtPrivate
0057 {
0058 [[maybe_unused]]
0059 constexpr qsizetype MaxAllocSize = (std::numeric_limits<qsizetype>::max)();
0060 }
0061
0062 QT_END_NAMESPACE
0063
0064 #endif // QCONTAINERFWD_H