qt_runtime.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

                        break; // Failed converting a list entry, so fail the array
                    }
                }
                if (objdist != -1) {
                    dist = 5;
                    ret = QVariant(result);
                }
            } else if (type == Array) {
                JSArray* array = static_cast<JSArray*>(object);

                QVariantList result;
                int len = array->length();
                int objdist = 0;
                qConvDebug() << "converting a " << len << " length Array";
                for (int i = 0; i < len; ++i) {
                    JSValuePtr val = array->get(exec, i);
                    result.append(convertValueToQVariant(exec, val, QMetaType::Void, &objdist, visitedObjects));
                    if (objdist == -1) {
                        qConvDebug() << "Failed converting element at index " << i;
                        break; // Failed converting a list entry, so fail the array
                    }
                }
                if (objdist != -1) {
                    dist = 5;
                    ret = QVariant(result);
                }
            } else {
                // Make a single length array
                int objdist;
                qConvDebug() << "making a single length variantlist";
                QVariant var = convertValueToQVariant(exec, value, QMetaType::Void, &objdist, visitedObjects);
                if (objdist != -1) {
                    QVariantList result;
                    result << var;
                    ret = QVariant(result);
                    dist = 10;
                } else {
                    qConvDebug() << "failed making single length varlist";
                }
            }
            break;

        case QMetaType::QStringList: {
            if (type == RTArray) {
                RuntimeArray* rtarray = static_cast<RuntimeArray*>(object);

                QStringList result;
                int len = rtarray->getLength();
                for (int i = 0; i < len; ++i) {
                    JSValuePtr val = rtarray->getConcreteArray()->valueAt(exec, i);
                    UString ustring = val.toString(exec);
                    QString qstring = QString::fromUtf16((const ushort*)ustring.rep()->data(),ustring.size());

                    result.append(qstring);
                }
                dist = 5;
                ret = QVariant(result);
            } else if (type == Array) {
                JSArray* array = static_cast<JSArray*>(object);

                QStringList result;
                int len = array->length();
                for (int i = 0; i < len; ++i) {
                    JSValuePtr val = array->get(exec, i);
                    UString ustring = val.toString(exec);
                    QString qstring = QString::fromUtf16((const ushort*)ustring.rep()->data(),ustring.size());

                    result.append(qstring);
                }
                dist = 5;
                ret = QVariant(result);
            } else {
                // Make a single length array
                UString ustring = value.toString(exec);
                QString qstring = QString::fromUtf16((const ushort*)ustring.rep()->data(),ustring.size());
                QStringList result;
                result.append(qstring);
                ret = QVariant(result);
                dist = 10;
            }
            break;
        }

        case QMetaType::QByteArray: {
            if (type == JSByteArray) {
                WTF::ByteArray* arr = asByteArray(value)->storage();
                ret = QVariant(QByteArray(reinterpret_cast<const char*>(arr->data()), arr->length()));
                dist = 0;
            } else {
                UString ustring = value.toString(exec);
                ret = QVariant(QString::fromUtf16((const ushort*)ustring.rep()->data(),ustring.size()).toLatin1());
                if (type == String)
                    dist = 5;
                else
                    dist = 10;
            }
            break;
        }

        case QMetaType::QDateTime:
        case QMetaType::QDate:
        case QMetaType::QTime:
            if (type == Date) {
                DateInstance* date = static_cast<DateInstance*>(object);
                GregorianDateTime gdt;
                date->getUTCTime(gdt);
                if (hint == QMetaType::QDateTime) {
                    ret = QDateTime(QDate(gdt.year + 1900, gdt.month + 1, gdt.monthDay), QTime(gdt.hour, gdt.minute, gdt.second), Qt::UTC);
                    dist = 0;
                } else if (hint == QMetaType::QDate) {
                    ret = QDate(gdt.year + 1900, gdt.month + 1, gdt.monthDay);
                    dist = 1;
                } else {
                    ret = QTime(gdt.hour + 1900, gdt.minute, gdt.second);
                    dist = 2;
                }
            } else if (type == Number) {
                double b = value.toNumber(exec);
                GregorianDateTime gdt;
                msToGregorianDateTime(b, true, gdt);
                if (hint == QMetaType::QDateTime) {
                    ret = QDateTime(QDate(gdt.year + 1900, gdt.month + 1, gdt.monthDay), QTime(gdt.hour, gdt.minute, gdt.second), Qt::UTC);
                    dist = 6;
                } else if (hint == QMetaType::QDate) {
                    ret = QDate(gdt.year + 1900, gdt.month + 1, gdt.monthDay);
                    dist = 8;
                } else {
                    ret = QTime(gdt.hour, gdt.minute, gdt.second);
                    dist = 10;
                }
            } else if (type == String) {
                UString ustring = value.toString(exec);
                QString qstring = QString::fromUtf16((const ushort*)ustring.rep()->data(),ustring.size());

                if (hint == QMetaType::QDateTime) {
                    QDateTime dt = QDateTime::fromString(qstring, Qt::ISODate);
                    if (!dt.isValid())
                        dt = QDateTime::fromString(qstring, Qt::TextDate);
                    if (!dt.isValid())
                        dt = QDateTime::fromString(qstring, Qt::SystemLocaleDate);
                    if (!dt.isValid())
                        dt = QDateTime::fromString(qstring, Qt::LocaleDate);
                    if (dt.isValid()) {
                        ret = dt;
                        dist = 2;
                    }
                } else if (hint == QMetaType::QDate) {
                    QDate dt = QDate::fromString(qstring, Qt::ISODate);
                    if (!dt.isValid())
                        dt = QDate::fromString(qstring, Qt::TextDate);
                    if (!dt.isValid())
                        dt = QDate::fromString(qstring, Qt::SystemLocaleDate);
                    if (!dt.isValid())
                        dt = QDate::fromString(qstring, Qt::LocaleDate);
                    if (dt.isValid()) {
                        ret = dt;
                        dist = 3;
                    }
                } else {
                    QTime dt = QTime::fromString(qstring, Qt::ISODate);
                    if (!dt.isValid())
                        dt = QTime::fromString(qstring, Qt::TextDate);
                    if (!dt.isValid())
                        dt = QTime::fromString(qstring, Qt::SystemLocaleDate);
                    if (!dt.isValid())
                        dt = QTime::fromString(qstring, Qt::LocaleDate);
                    if (dt.isValid()) {
                        ret = dt;
                        dist = 3;
                    }
                }
            }
            break;

        case QMetaType::QRegExp:
            if (type == RegExp) {
/*
                RegExpObject *re = static_cast<RegExpObject*>(object);
*/
                // Attempt to convert.. a bit risky
                UString ustring = value.toString(exec);
                QString qstring = QString::fromUtf16((const ushort*)ustring.rep()->data(),ustring.size());

                // this is of the form '/xxxxxx/i'
                int firstSlash = qstring.indexOf(QLatin1Char('/'));
                int lastSlash = qstring.lastIndexOf(QLatin1Char('/'));
                if (firstSlash >=0 && lastSlash > firstSlash) {
                    QRegExp realRe;

                    realRe.setPattern(qstring.mid(firstSlash + 1, lastSlash - firstSlash - 1));

                    if (qstring.mid(lastSlash + 1).contains(QLatin1Char('i')))
                        realRe.setCaseSensitivity(Qt::CaseInsensitive);

                    ret = qVariantFromValue(realRe);
                    dist = 0;
                } else {
                    qConvDebug() << "couldn't parse a JS regexp";
                }
            } else if (type == String) {
                UString ustring = value.toString(exec);
                QString qstring = QString::fromUtf16((const ushort*)ustring.rep()->data(),ustring.size());

                QRegExp re(qstring);
                if (re.isValid()) {
                    ret = qVariantFromValue(re);
                    dist = 10;
                }
            }
            break;

        case QMetaType::QObjectStar:
            if (type == QObj) {
                QtInstance* qtinst = QtInstance::getInstance(object);
                if (qtinst) {
                    if (qtinst->getObject()) {
                        qConvDebug() << "found instance, with object:" << (void*) qtinst->getObject();
                        ret = qVariantFromValue(qtinst->getObject());
                        qConvDebug() << ret;
                        dist = 0;
                    } else {
                        qConvDebug() << "can't convert deleted qobject";
                    }
                } else {
                    qConvDebug() << "wasn't a qtinstance";
                }
            } else if (type == Null) {
                QObject* nullobj = 0;
                ret = qVariantFromValue(nullobj);
                dist = 0;
            } else {
                qConvDebug() << "previous type was not an object:" << type;
            }
            break;

        case QMetaType::VoidStar:
            if (type == QObj) {
                QtInstance* qtinst = QtInstance::getInstance(object);
                if (qtinst) {
                    if (qtinst->getObject()) {
                        qConvDebug() << "found instance, with object:" << (void*) qtinst->getObject();
                        ret = qVariantFromValue((void *)qtinst->getObject());
                        qConvDebug() << ret;
                        dist = 0;
                    } else {
                        qConvDebug() << "can't convert deleted qobject";
                    }
                } else {
                    qConvDebug() << "wasn't a qtinstance";
                }
            } else if (type == Null) {
                ret = qVariantFromValue((void*)0);
                dist = 0;
            } else if (type == Number) {
                // I don't think that converting a double to a pointer is a wise
                // move.  Except maybe 0.
                qConvDebug() << "got number for void * - not converting, seems unsafe:" << value.toNumber(exec);
            } else {
                qConvDebug() << "void* - unhandled type" << type;
            }
            break;

        default:
            // Non const type ids
            if (hint == (QMetaType::Type) qMetaTypeId<QObjectList>())
            {
                if (type == RTArray) {
                    RuntimeArray* rtarray = static_cast<RuntimeArray*>(object);

                    QObjectList result;
                    int len = rtarray->getLength();
                    for (int i = 0; i < len; ++i) {
                        JSValuePtr val = rtarray->getConcreteArray()->valueAt(exec, i);
                        int itemdist = -1;
                        QVariant item = convertValueToQVariant(exec, val, QMetaType::QObjectStar, &itemdist, visitedObjects);
                        if (itemdist >= 0)
                            result.append(item.value<QObject*>());
                        else
                            break;
                    }
                    // If we didn't fail conversion
                    if (result.count() == len) {
                        dist = 5;
                        ret = QVariant::fromValue(result);
                    }
                } else if (type == Array) {
                    JSObject* object = value.toObject(exec);
                    JSArray* array = static_cast<JSArray *>(object);
                    QObjectList result;
                    int len = array->length();
                    for (int i = 0; i < len; ++i) {
                        JSValuePtr val = array->get(exec, i);
                        int itemdist = -1;
                        QVariant item = convertValueToQVariant(exec, val, QMetaType::QObjectStar, &itemdist, visitedObjects);
                        if (itemdist >= 0)
                            result.append(item.value<QObject*>());
                        else
                            break;
                    }
                    // If we didn't fail conversion
                    if (result.count() == len) {
                        dist = 5;
                        ret = QVariant::fromValue(result);
                    }
                } else {
                    // Make a single length array
                    QObjectList result;
                    int itemdist = -1;
                    QVariant item = convertValueToQVariant(exec, value, QMetaType::QObjectStar, &itemdist, visitedObjects);
                    if (itemdist >= 0) {
                        result.append(item.value<QObject*>());
                        dist = 10;
                        ret = QVariant::fromValue(result);
                    }
                }
                break;
            } else if (hint == (QMetaType::Type) qMetaTypeId<QList<int> >()) {
                if (type == RTArray) {
                    RuntimeArray* rtarray = static_cast<RuntimeArray*>(object);

                    QList<int> result;
                    int len = rtarray->getLength();
                    for (int i = 0; i < len; ++i) {
                        JSValuePtr val = rtarray->getConcreteArray()->valueAt(exec, i);
                        int itemdist = -1;
                        QVariant item = convertValueToQVariant(exec, val, QMetaType::Int, &itemdist, visitedObjects);
                        if (itemdist >= 0)
                            result.append(item.value<int>());
                        else
                            break;
                    }
                    // If we didn't fail conversion
                    if (result.count() == len) {
                        dist = 5;
                        ret = QVariant::fromValue(result);
                    }
                } else if (type == Array) {
                    JSArray* array = static_cast<JSArray *>(object);

                    QList<int> result;
                    int len = array->length();
                    for (int i = 0; i < len; ++i) {
                        JSValuePtr val = array->get(exec, i);
                        int itemdist = -1;
                        QVariant item = convertValueToQVariant(exec, val, QMetaType::Int, &itemdist, visitedObjects);
                        if (itemdist >= 0)
                            result.append(item.value<int>());
                        else
                            break;
                    }
                    // If we didn't fail conversion