qabstractdatetime_p.h

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//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.

#ifndef Patternist_AbstractDateTime_H
#define Patternist_AbstractDateTime_H

#include <QDateTime>
#include <QRegExp>

#include "qitem_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist
{
    class AbstractDateTime : public AtomicValue
    {
    public:
        typedef QExplicitlySharedDataPointer<AbstractDateTime> Ptr;

        AbstractDateTime(const QDateTime &dateTime);

        enum
        {
            DefaultYear     = 2000,
            DefaultMonth    = 1,
            DefaultDay      = 1
        };

        inline const QDateTime &toDateTime() const
        {
            return m_dateTime;
        }


        class CaptureTable
        {
        public:
            CaptureTable(const QRegExp &exp,
                         const qint8 zoneOffsetSignP,
                         const qint8 zoneOffsetHourP,
                         const qint8 zoneOffsetMinuteP,
                         const qint8 zoneOffsetUTCSymbolP,
                         const qint8 yearP,
                         const qint8 monthP = -1,
                         const qint8 dayP = -1,
                         const qint8 hourP = -1,
                         const qint8 minutesP = -1,
                         const qint8 secondsP = -1,
                         const qint8 msecondsP = -1,
                         const qint8 yearSignP = -1) : regExp(exp)
                                                     , zoneOffsetSign(zoneOffsetSignP)
                                                     , zoneOffsetHour(zoneOffsetHourP)
                                                     , zoneOffsetMinute(zoneOffsetMinuteP)
                                                     , zoneOffsetUTCSymbol(zoneOffsetUTCSymbolP)
                                                     , year(yearP)
                                                     , month(monthP)
                                                     , day(dayP)
                                                     , hour(hourP)
                                                     , minutes(minutesP)
                                                     , seconds(secondsP)
                                                     , mseconds(msecondsP)
                                                     , yearSign(yearSignP)
            {
                Q_ASSERT(exp.isValid());
            }

            const QRegExp regExp;
            const qint8 zoneOffsetSign;
            const qint8 zoneOffsetHour;
            const qint8 zoneOffsetMinute;
            const qint8 zoneOffsetUTCSymbol;
            const qint8 year;
            const qint8 month;
            const qint8 day;
            const qint8 hour;
            const qint8 minutes;
            const qint8 seconds;
            const qint8 mseconds;
            const qint8 yearSign;

        private:
            Q_DISABLE_COPY(CaptureTable)
        };

        QString timeToString() const;

        QString dateToString() const;

        static QString serializeMSeconds(const MSecondProperty msecs);

        virtual Item fromValue(const QDateTime &dt) const;

        static bool isRangeValid(const QDate &date,
                                 QString &message);

    protected:

        QString zoneOffsetToString() const;

        static QDateTime create(AtomicValue::Ptr &errorMessage,
                                const QString &lexicalSource,
                                const CaptureTable &captTable);

        static void copyTimeSpec(const QDateTime &from,
                                 QDateTime &to);

        const QDateTime m_dateTime;

    private:
        enum ZoneOffsetParseResult
        {
            Error,
            Offset,

            LocalTime,
            UTC
        };

        static ZOTotal parseZoneOffset(ZoneOffsetParseResult &result,
                                       const QStringList &capts,
                                       const CaptureTable &captTable);

        static inline void setUtcOffset(QDateTime &result,
                                        const ZoneOffsetParseResult zoResult,
                                        const int zoOffset);
    };
}

QT_END_NAMESPACE

QT_END_HEADER

#endif