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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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.
**
** $QT_END_LICENSE$
**
**
**
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**
**
****************************************************************************/

#ifndef QREGEXP_H
#define QREGEXP_H

#include <QtCore/qglobal.h>

#ifndef QT_NO_REGEXP

#include <QtCore/qstring.h>

QT_BEGIN_NAMESPACE


struct QRegExpPrivate;
class QStringList;
class QRegExp;

Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) noexcept;

class Q_CORE_EXPORT QRegExp
{
public:
    enum PatternSyntax {
        RegExp,
        Wildcard,
        FixedString,
        RegExp2,
        WildcardUnix,
        W3CXmlSchema11 };
    enum CaretMode { CaretAtZero, CaretAtOffset, CaretWontMatch };

    QRegExp();
    explicit QRegExp(const QString &pattern, Qt::CaseSensitivity cs = Qt::CaseSensitive,
                     PatternSyntax syntax = RegExp);
    QRegExp(const QRegExp &rx);
    ~QRegExp();
    QRegExp &operator=(const QRegExp &rx);
    QRegExp &operator=(QRegExp &&other) noexcept { swap(other); return *this; }
    void swap(QRegExp &other) noexcept { qSwap(priv, other.priv); }

    bool operator==(const QRegExp &rx) const;
    inline bool operator!=(const QRegExp &rx) const { return !operator==(rx); }

    bool isEmpty() const;
    bool isValid() const;
    QString pattern() const;
    void setPattern(const QString &pattern);
    Qt::CaseSensitivity caseSensitivity() const;
    void setCaseSensitivity(Qt::CaseSensitivity cs);
    PatternSyntax patternSyntax() const;
    void setPatternSyntax(PatternSyntax syntax);

    bool isMinimal() const;
    void setMinimal(bool minimal);

    bool exactMatch(const QString &str) const;

    int indexIn(const QString &str, int offset = 0, CaretMode caretMode = CaretAtZero) const;
    int lastIndexIn(const QString &str, int offset = -1, CaretMode caretMode = CaretAtZero) const;
    int matchedLength() const;
#ifndef QT_NO_REGEXP_CAPTURE
    int captureCount() const;
    QStringList capturedTexts() const;
    QStringList capturedTexts();
    QString cap(int nth = 0) const;
    QString cap(int nth = 0);
    int pos(int nth = 0) const;
    int pos(int nth = 0);
    QString errorString() const;
    QString errorString();
#endif

    static QString escape(const QString &str);

    friend Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed) noexcept;

private:
    QRegExpPrivate *priv;
};

Q_DECLARE_TYPEINFO(QRegExp, Q_MOVABLE_TYPE);

#ifndef QT_NO_DATASTREAM
Q_CORE_EXPORT QDataStream &operator<<(QDataStream &out, const QRegExp &regExp);
Q_CORE_EXPORT QDataStream &operator>>(QDataStream &in, QRegExp &regExp);
#endif

#ifndef QT_NO_DEBUG_STREAM
Q_CORE_EXPORT QDebug operator<<(QDebug, const QRegExp &);
#endif

QT_END_NAMESPACE

#endif // QT_NO_REGEXP

#endif // QREGEXP_H