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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 180 insertions, 0 deletions

diff --git a/src/corelib/tools/qbitarray.h b/src/corelib/tools/qbitarray.h
new file mode 100644
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+++ b/src/corelib/tools/qbitarray.h
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QBITARRAY_H
+#define QBITARRAY_H
+
+#include <QtCore/qbytearray.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Core)
+
+class QBitRef;
+class Q_CORE_EXPORT QBitArray
+{
+    friend Q_CORE_EXPORT QDataStream &operator<<(QDataStream &, const QBitArray &);
+    friend Q_CORE_EXPORT QDataStream &operator>>(QDataStream &, QBitArray &);
+    friend Q_CORE_EXPORT uint qHash(const QBitArray &key);
+    QByteArray d;
+
+public:
+    inline QBitArray() {}
+    explicit QBitArray(int size, bool val = false);
+    QBitArray(const QBitArray &other) : d(other.d) {}
+    inline QBitArray &operator=(const QBitArray &other) { d = other.d; return *this; }
+#ifdef Q_COMPILER_RVALUE_REFS
+    inline QBitArray &operator=(QBitArray &&other)
+    { qSwap(d, other.d); return *this; }
+#endif
+
+    inline void swap(QBitArray &other) { qSwap(d, other.d); }
+
+    inline int size() const { return (d.size() << 3) - *d.constData(); }
+    inline int count() const { return (d.size() << 3) - *d.constData(); }
+    int count(bool on) const;
+    // ### Qt 5: Store the number of set bits separately
+
+    inline bool isEmpty() const { return d.isEmpty(); }
+    inline bool isNull() const { return d.isNull(); }
+
+    void resize(int size);
+
+    inline void detach() { d.detach(); }
+    inline bool isDetached() const { return d.isDetached(); }
+    inline void clear() { d.clear(); }
+
+    bool testBit(int i) const;
+    void setBit(int i);
+    void setBit(int i, bool val);
+    void clearBit(int i);
+    bool toggleBit(int i);
+
+    bool at(int i) const;
+    QBitRef operator[](int i);
+    bool operator[](int i) const;
+    QBitRef operator[](uint i);
+    bool operator[](uint i) const;
+
+    QBitArray& operator&=(const QBitArray &);
+    QBitArray& operator|=(const QBitArray &);
+    QBitArray& operator^=(const QBitArray &);
+    QBitArray  operator~() const;
+
+    inline bool operator==(const QBitArray& a) const { return d == a.d; }
+    inline bool operator!=(const QBitArray& a) const { return d != a.d; }
+
+    inline bool fill(bool val, int size = -1);
+    void fill(bool val, int first, int last);
+
+    inline void truncate(int pos) { if (pos < size()) resize(pos); }
+
+public:
+    typedef QByteArray::DataPtr DataPtr;
+    inline DataPtr &data_ptr() { return d.data_ptr(); }
+};
+
+inline bool QBitArray::fill(bool aval, int asize)
+{ *this = QBitArray((asize < 0 ? this->size() : asize), aval); return true; }
+
+Q_CORE_EXPORT QBitArray operator&(const QBitArray &, const QBitArray &);
+Q_CORE_EXPORT QBitArray operator|(const QBitArray &, const QBitArray &);
+Q_CORE_EXPORT QBitArray operator^(const QBitArray &, const QBitArray &);
+
+inline bool QBitArray::testBit(int i) const
+{ Q_ASSERT(i >= 0 && i < size());
+ return (*(reinterpret_cast<const uchar*>(d.constData())+1+(i>>3)) & (1 << (i & 7))) != 0; }
+
+inline void QBitArray::setBit(int i)
+{ Q_ASSERT(i >= 0 && i < size());
+ *(reinterpret_cast<uchar*>(d.data())+1+(i>>3)) |= uchar(1 << (i & 7)); }
+
+inline void QBitArray::clearBit(int i)
+{ Q_ASSERT(i >= 0 && i < size());
+ *(reinterpret_cast<uchar*>(d.data())+1+(i>>3)) &= ~uchar(1 << (i & 7)); }
+
+inline void QBitArray::setBit(int i, bool val)
+{ if (val) setBit(i); else clearBit(i); }
+
+inline bool QBitArray::toggleBit(int i)
+{ Q_ASSERT(i >= 0 &&  i < size());
+ uchar b = uchar(1<<(i&7)); uchar* p = reinterpret_cast<uchar*>(d.data())+1+(i>>3);
+ uchar c = uchar(*p&b); *p^=b; return c!=0; }
+
+inline bool QBitArray::operator[](int i) const { return testBit(i); }
+inline bool QBitArray::operator[](uint i) const { return testBit(i); }
+inline bool QBitArray::at(int i) const { return testBit(i); }
+
+class Q_CORE_EXPORT QBitRef
+{
+private:
+    QBitArray& a;
+    int i;
+    inline QBitRef(QBitArray& array, int idx) : a(array), i(idx) {}
+    friend class QBitArray;
+public:
+    inline operator bool() const { return a.testBit(i); }
+    inline bool operator!() const { return !a.testBit(i); }
+    QBitRef& operator=(const QBitRef& val) { a.setBit(i, val); return *this; }
+    QBitRef& operator=(bool val) { a.setBit(i, val); return *this; }
+};
+
+inline QBitRef QBitArray::operator[](int i)
+{ Q_ASSERT(i >= 0); return QBitRef(*this, i); }
+inline QBitRef QBitArray::operator[](uint i)
+{ return QBitRef(*this, i); }
+
+
+#ifndef QT_NO_DATASTREAM
+Q_CORE_EXPORT QDataStream &operator<<(QDataStream &, const QBitArray &);
+Q_CORE_EXPORT QDataStream &operator>>(QDataStream &, QBitArray &);
+#endif
+
+Q_DECLARE_TYPEINFO(QBitArray, Q_MOVABLE_TYPE);
+Q_DECLARE_SHARED(QBitArray)
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QBITARRAY_H