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// Copyright (C) 2024 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#ifndef CALENDARBACKEND_H
#define CALENDARBACKEND_H
#include "private/qromancalendar_p.h"
#include "qdatetime.h"
#include <QtCore/private/qcalendarbackend_p.h>
//![0]
class JulianGregorianCalendar : public QRomanCalendar
{
public:
JulianGregorianCalendar(QDate endJulian, QAnyStringView name);
QString name() const override;
int daysInMonth(int month, int year = QCalendar::Unspecified) const override;
bool isLeapYear(int year) const override;
bool dateToJulianDay(int year, int month, int day, qint64 *jd) const override;
QCalendar::YearMonthDay julianDayToDate(qint64 jd) const override;
private:
static inline const QCalendar julian = QCalendar(QCalendar::System::Julian);
static inline const QCalendar gregorian = QCalendar(QCalendar::System::Gregorian);
QCalendar::YearMonthDay m_julianUntil;
QCalendar::YearMonthDay m_gregorianSince;
QString m_name;
};
//![0]
#endif // CALENDARBACKEND_H
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