qscriptecmadate.cpp

奇趣公司比较新的qt/emd版本

#else
    SYSTEMTIME st;
    GetSystemTime(&st);
    FILETIME ft;
    SystemTimeToFileTime(&st, &ft);
    LARGE_INTEGER li;
    li.LowPart = ft.dwLowDateTime;
    li.HighPart = ft.dwHighDateTime;
    return double(li.QuadPart - Q_INT64_C(116444736000000000)) / 10000.0;
#endif
}

static inline qsreal TimeClip(qsreal t)
{
    if (! qIsFinite(t) || fabs(t) > 8.64e15)
        return qSNaN();
    return QScriptEnginePrivate::toInteger(t);
}

static inline qsreal ParseString(const QString &s)
{
    QDateTime dt = QDateTime::fromString(s);
    if (!dt.isValid())
        return qSNaN();
    int year = dt.date().year();
    int month = dt.date().month() - 1;
    int day = dt.date().day();
    int hours = dt.time().hour();
    int mins = dt.time().minute();
    int secs = dt.time().second();
    int ms = dt.time().msec();
    double t = MakeDate(MakeDay(year, month, day), MakeTime(hours, mins, secs, ms));
    return t = TimeClip(UTC(t));
}

static inline QDateTime ToDateTime(qsreal t)
{
    if (qIsNaN(t))
        return QDateTime();
    int year = int(YearFromTime(t));
    int month = int(MonthFromTime(t) + 1);
    int day = int(DateFromTime(t));
    int hours = HourFromTime(t);
    int mins = MinFromTime(t);
    int secs = SecFromTime(t);
    int ms = msFromTime(t);
    return QDateTime(QDate(year, month, day), QTime(hours, mins, secs, ms));
}

static inline qsreal FromDateTime(const QDateTime &dt)
{
    QDate date = dt.date();
    QTime taim = dt.time();
    int year = date.year();
    int month = date.month() - 1;
    int day = date.day();
    int hours = taim.hour();
    int mins = taim.minute();
    int secs = taim.second();
    int ms = taim.msec();
    return MakeDate(MakeDay(year, month, day),
                    MakeTime(hours, mins, secs, ms));
}

static inline QString ToString(qsreal t)
{
    t = LocalTime(t);
    return ToDateTime(t).toString();
}

static inline QString ToUTCString(qsreal t)
{
    return ToDateTime(t).toString();
}

static inline QString ToDateString(qsreal t)
{
    t = LocalTime(t);
    return ToDateTime(t).date().toString();
}

static inline QString ToTimeString(qsreal t)
{
    t = LocalTime(t);
    return ToDateTime(t).time().toString();
}

static inline QString ToLocaleString(qsreal t)
{
    t = LocalTime(t);
    return ToDateTime(t).toString(Qt::LocaleDate);
}

static inline QString ToLocaleDateString(qsreal t)
{
    t = LocalTime(t);
    return ToDateTime(t).date().toString(Qt::LocaleDate);
}

static inline QString ToLocaleTimeString(qsreal t)
{
    t = LocalTime(t);
    return ToDateTime(t).time().toString(Qt::LocaleDate);
}

static qsreal getLocalTZA()
{
#ifndef Q_WS_WIN
    struct tm* t;
    time_t curr;
    time(&curr);
    t = localtime(&curr);
    time_t locl = mktime(t);
    t = gmtime(&curr);
    time_t globl = mktime(t);
    return double(locl - globl) * 1000.0;
#else
    TIME_ZONE_INFORMATION tzInfo;
    GetTimeZoneInformation(&tzInfo);
    return tzInfo.Bias * 60.0 * 1000.0;
#endif
}

namespace QScript { namespace Ecma {


Date::Date(QScriptEnginePrivate *eng):
    Core(eng)
{
    LocalTZA = getLocalTZA();

    m_classInfo = eng->registerClass(QLatin1String("Date"));

    publicPrototype.invalidate();
    newDate(&publicPrototype, qSNaN());

    const QScriptValue::PropertyFlags flags = QScriptValue::SkipInEnumeration;

    eng->newConstructor(&ctor, this, publicPrototype);
    ctor.setProperty(QLatin1String("parse"),
                     eng->createFunction(method_parse, 1, m_classInfo), flags);
    ctor.setProperty(QLatin1String("UTC"),
                     eng->createFunction(method_UTC, 1, m_classInfo), flags);

    publicPrototype.setProperty(QLatin1String("toString"),
                                eng->createFunction(method_toString, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("toDateString"),
                                eng->createFunction(method_toDateString, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("toTimeString"),
                                eng->createFunction(method_toTimeString, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("toLocaleString"),
                                eng->createFunction(method_toLocaleString, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("toLocaleDateString"),
                                eng->createFunction(method_toLocaleDateString, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("toLocaleTimeString"),
                                eng->createFunction(method_toLocaleTimeString, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("valueOf"),
                                eng->createFunction(method_valueOf, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getTime"),
                                eng->createFunction(method_getTime, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getYear"),
                                eng->createFunction(method_getYear, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getFullYear"),
                                eng->createFunction(method_getFullYear, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getUTCFullYear"),
                                eng->createFunction(method_getUTCFullYear, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getMonth"),
                                eng->createFunction(method_getMonth, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getUTCMonth"),
                                eng->createFunction(method_getUTCMonth, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getDate"),
                                eng->createFunction(method_getDate, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getUTCDate"),
                                eng->createFunction(method_getUTCDate, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getDay"),
                                eng->createFunction(method_getDay, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getUTCDay"),
                                eng->createFunction(method_getUTCDay, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getHours"),
                                eng->createFunction(method_getHours, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getUTCHours"),
                                eng->createFunction(method_getUTCHours, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getMinutes"),
                                eng->createFunction(method_getMinutes, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getUTCMinutes"),
                                eng->createFunction(method_getUTCMinutes, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getSeconds"),
                                eng->createFunction(method_getSeconds, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getUTCSeconds"),
                                eng->createFunction(method_getUTCSeconds, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getMilliseconds"),
                                eng->createFunction(method_getMilliseconds, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getUTCMilliseconds"),
                                eng->createFunction(method_getUTCMilliseconds, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("getTimezoneOffset"),
                                eng->createFunction(method_getTimezoneOffset, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setTime"),
                                eng->createFunction(method_setTime, 1, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setMilliseconds"),
                                eng->createFunction(method_setMilliseconds, 1, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setUTCMilliseconds"),
                                eng->createFunction(method_setUTCMilliseconds, 1, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setSeconds"),
                                eng->createFunction(method_setSeconds, 2, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setUTCSeconds"),
                                eng->createFunction(method_setUTCSeconds, 2, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setMinutes"),
                                eng->createFunction(method_setMinutes, 3, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setUTCMinutes"),
                                eng->createFunction(method_setUTCMinutes, 3, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setHours"),
                                eng->createFunction(method_setHours, 4, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setUTCHours"),
                                eng->createFunction(method_setUTCHours, 4, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setDate"),
                                eng->createFunction(method_setDate, 1, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setUTCDate"),
                                eng->createFunction(method_setUTCDate, 1, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setMonth"),
                                eng->createFunction(method_setMonth, 2, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setUTCMonth"),
                                eng->createFunction(method_setUTCMonth, 2, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setYear"),
                                eng->createFunction(method_setYear, 1, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setFullYear"),
                                eng->createFunction(method_setFullYear, 3, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("setUTCFullYear"),
                                eng->createFunction(method_setUTCFullYear, 3, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("toUTCString"),
                                eng->createFunction(method_toUTCString, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("toGMTString"),
                                eng->createFunction(method_toUTCString, 0, m_classInfo), flags);
}

Date::~Date()
{
}

void Date::execute(QScriptContextPrivate *context)
{
    if (!context->isCalledAsConstructor()) {
        double t = currentTime();
        context->setReturnValue(QScriptValueImpl(engine(), ToString(t)));
        return;
    }

    // called as constructor
    qsreal t;

    if (context->argumentCount() == 0)
        t = currentTime();

    else if (context->argumentCount() == 1) {
        QScriptValue arg = context->argument(0).toPrimitive();
        if (arg.isString())
            t = ParseString(arg.toString());
        else
            t = TimeClip(arg.toNumber());
    }

    else { // context->argumentCount() > 1
        qsreal year  = context->argument(0).toNumber();
        qsreal month = context->argument(1).toNumber();
        qsreal day  = context->argumentCount() >= 3 ? context->argument(2).toNumber() : 1;
        qsreal hours = context->argumentCount() >= 4 ? context->argument(3).toNumber() : 0;
        qsreal mins = context->argumentCount() >= 5 ? context->argument(4).toNumber() : 0;
        qsreal secs = context->argumentCount() >= 6 ? context->argument(5).toNumber() : 0;
        qsreal ms    = context->argumentCount() >= 7 ? context->argument(6).toNumber() : 0;
        if (year >= 0 && year <= 99)
            year += 1900;
        t = MakeDate(MakeDay(year, month, day), MakeTime(hours, mins, secs, ms));
        t = TimeClip(UTC(t));
    }

    QScriptValueImpl &obj = context->m_thisObject;
    obj.setClassInfo(classInfo());
    obj.setInternalValue(QScriptValueImpl(engine(), t));
    obj.setPrototype(publicPrototype);
    context->setReturnValue(obj);
}

void Date::newDate(QScriptValueImpl *result, qsreal t)
{
    engine()->newObject(result, publicPrototype, classInfo());
    result->setInternalValue(QScriptValueImpl(engine(), t));
}

void Date::newDate(QScriptValueImpl *result, const QDateTime &dt)
{
    newDate(result, FromDateTime(dt));
}

void Date::newDate(QScriptValueImpl *result, const QDate &d)
{
    newDate(result, QDateTime(d));
}

QDateTime Date::toDateTime(const QScriptValueImpl &date) const
{
    Q_ASSERT(date.classInfo() == m_classInfo);
    qsreal t = date.internalValue().toNumber();
    return ToDateTime(t);
}

QScriptValueImpl Date::method_parse(QScriptContextPrivate *context, QScriptEnginePrivate *eng, QScriptClassInfo *)
{
    return QScriptValueImpl(eng, ParseString(context->argument(0).toString()));
}

QScriptValueImpl Date::method_UTC(QScriptContextPrivate *context, QScriptEnginePrivate *eng, QScriptClassInfo *)
{