qtextboundaryfinder.h

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// Copyright (C) 2016 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

// Qt-Security score:significant reason:trivial-impl-only

#ifndef QTEXTBOUNDARYFINDER_H

#define QTEXTBOUNDARYFINDER_H

#include <QtCore/qchar.h>

#include <QtCore/qstring.h>

#if QT_VERSION >= QT_VERSION_CHECK(7, 0, 0)

#  include <array>

#endif

QT_BEGIN_NAMESPACE

struct QCharAttributes;

class Q_CORE_EXPORT QTextBoundaryFinder

public:

    QTextBoundaryFinder();

    QTextBoundaryFinder(const QTextBoundaryFinder &other);

    QTextBoundaryFinder(QTextBoundaryFinder &&other) noexcept

        : s{std::move(other.s)},

          sv{other.sv},

          pos{other.pos},

          attributes{std::exchange(other.attributes, nullptr)}

          t = other.t;

          freeBuffer = other.freeBuffer;

          QT7_ONLY(reserved = other.reserved;)

    QTextBoundaryFinder &operator=(const QTextBoundaryFinder &other);

    QT_MOVE_ASSIGNMENT_OPERATOR_IMPL_VIA_PURE_SWAP(QTextBoundaryFinder)

    ~QTextBoundaryFinder();

    void swap(QTextBoundaryFinder &other) noexcept

        std::swap(t, other.t);

        s.swap(other.s);

        std::swap(sv, other.sv);

        std::swap(pos, other.pos);

        std::swap(freeBuffer, other.freeBuffer);

        qt_ptr_swap(attributes, other.attributes);

        QT7_ONLY(reserved.swap(other.reserved);)

    enum BoundaryType QT7_ONLY(: quint8) {

        Grapheme,

        Word,

        Sentence,

        Line

};

    enum BoundaryReason {

        NotAtBoundary = 0,

        BreakOpportunity = 0x1f,

        StartOfItem = 0x20,

        EndOfItem = 0x40,

        MandatoryBreak = 0x80,

        SoftHyphen = 0x100

};

    Q_DECLARE_FLAGS( BoundaryReasons, BoundaryReason )

    QTextBoundaryFinder(BoundaryType type, const QString &string);

    QTextBoundaryFinder(BoundaryType type, const QChar *chars, qsizetype length, unsigned char *buffer = nullptr, qsizetype bufferSize = 0)

        : QTextBoundaryFinder(type, QStringView(chars, length), buffer, bufferSize)

{}

    QTextBoundaryFinder(BoundaryType type, QStringView str, unsigned char *buffer = nullptr, qsizetype bufferSize = 0);

    inline bool isValid() const { return attributes; }

    inline BoundaryType type() const { return t; }

    QString string() const;

    void toStart();

    void toEnd();

    qsizetype position() const;

    void setPosition(qsizetype position);

    qsizetype toNextBoundary();

    qsizetype toPreviousBoundary();

    bool isAtBoundary() const;

    BoundaryReasons boundaryReasons() const;

private:

    QT6_ONLY(BoundaryType t = Grapheme;)

    QString s;

    QStringView sv;

    qsizetype pos = 0;

    QT6_ONLY(uint freeBuffer = true;)

    QCharAttributes *attributes = nullptr;

#if QT_VERSION >= QT_VERSION_CHECK(7, 0, 0)

    bool freeBuffer = true;

    BoundaryType t = Grapheme;

    std::array<quint8, sizeof(void *) - 2> reserved = {};

#endif

};

Q_DECLARE_SHARED(QTextBoundaryFinder)

Q_DECLARE_OPERATORS_FOR_FLAGS(QTextBoundaryFinder::BoundaryReasons)

QT_END_NAMESPACE

#endif