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// Copyright (C) 2021 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 QGREGORIAN_CALENDAR_P_H
#define QGREGORIAN_CALENDAR_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of calendar implementations. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qromancalendar_p.h"
QT_BEGIN_NAMESPACE
class Q_CORE_EXPORT QGregorianCalendar : public QRomanCalendar
{
// TODO: provide static methods, called by the overrides, that can be called
// directly by QDate to optimize various parts.
public:
// Calendar property:
QString name() const override;
static QStringList nameList();
// Date queries:
bool isLeapYear(int year) const override;
// Julian Day conversions:
bool dateToJulianDay(int year, int month, int day, qint64 *jd) const override;
QCalendar::YearMonthDay julianDayToDate(qint64 jd) const override;
// Names of months (implemented in qlocale.cpp):
QString monthName(const QLocale &locale, int month, int year,
QLocale::FormatType format) const override;
QString standaloneMonthName(const QLocale &locale, int month, int year,
QLocale::FormatType format) const override;
// Static optimized versions for the benefit of QDate:
static int weekDayOfJulian(qint64 jd);
static bool leapTest(int year);
static int monthLength(int month, int year);
static bool validParts(int year, int month, int day);
static QCalendar::YearMonthDay partsFromJulian(qint64 jd);
static bool julianFromParts(int year, int month, int day, qint64 *jd);
// Used internally:
static int yearStartWeekDay(int year);
static int yearSharingWeekDays(QDate date);
};
QT_END_NAMESPACE
#endif // QGREGORIAN_CALENDAR_P_H
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