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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
#ifndef QTEXTBOUNDARYFINDER_H
#define QTEXTBOUNDARYFINDER_H
#include <QtCore/qchar.h>
#include <QtCore/qstring.h>
QT_BEGIN_NAMESPACE
struct QCharAttributes;
class Q_CORE_EXPORT QTextBoundaryFinder
{
public:
QTextBoundaryFinder();
QTextBoundaryFinder(const QTextBoundaryFinder &other);
QTextBoundaryFinder &operator=(const QTextBoundaryFinder &other);
~QTextBoundaryFinder();
enum BoundaryType {
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:
BoundaryType t = Grapheme;
QString s;
QStringView sv;
qsizetype pos = 0;
uint freeBuffer : 1;
uint unused : 31;
QCharAttributes *attributes = nullptr;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QTextBoundaryFinder::BoundaryReasons)
QT_END_NAMESPACE
#endif
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