C++ QScriptEngine::newObject方法代码示例

// Configuration
NResponse & NTcpServerSocketCfgServices::getSharedDir(const NClientSession &, NResponse & response)
{
    QScriptEngine se;
    QScriptValue svRoot = se.newObject();

    NDirList sd = NConfig::instance().sharedDirectories();
    int count = sd.count();
    svRoot.setProperty(RSP_SUCCESS , QScriptValue(count > 0));
    svRoot.setProperty(RSP_MSG, QScriptValue(count > 0 ? RSP_MSG_LOADED : RSP_MSG_NO_RESULTS));
    svRoot.setProperty(RSP_COUNT, QScriptValue(count));

    QScriptValue svData = se.newArray(count);
    svRoot.setProperty(RSP_DATA, svData);
    for(int i = 0; i < count; i++)
    {
        NDir dir = sd.at(i);
        QScriptValue svDir = se.newObject();
        svData.setProperty(i, svDir);
        svDir.setProperty("id", i);
        svDir.setProperty("path", dir.path());
        svDir.setProperty("recursive", dir.recursive());
        svDir.setProperty("shared", dir.shared());
        svDir.setProperty("exists", dir.exists());
    }
    response.setData(NJson::serializeToQByteArray(svRoot));
    return response;
}

bool HttpHandlerQtScript::handleRequest(Pillow::HttpRequest *request)
{
    if (!_scriptFunction.isFunction()) return false;

    QScriptEngine* engine = _scriptFunction.engine();
    QScriptValue requestObject = engine->newObject();
    requestObject.setProperty("nativeRequest", _scriptFunction.engine()->newQObject(request));
    requestObject.setProperty("requestMethod", QUrl::fromPercentEncoding(request->requestMethod()));
    requestObject.setProperty("requestUri", QUrl::fromPercentEncoding(request->requestUri()));
    requestObject.setProperty("requestFragment", QUrl::fromPercentEncoding(request->requestFragment()));
    requestObject.setProperty("requestPath", QUrl::fromPercentEncoding(request->requestPath()));
    requestObject.setProperty("requestQueryString", QUrl::fromPercentEncoding(request->requestQueryString()));
    requestObject.setProperty("requestHeaders", qScriptValueFromValue(engine, request->requestHeaders()));

    QList<QPair<QString, QString> > queryParams = QUrl(request->requestUri()).queryItems();
    QScriptValue queryParamsObject = engine->newObject();
    for (int i = 0, iE = queryParams.size(); i < iE; ++i)
        queryParamsObject.setProperty(queryParams.at(i).first, queryParams.at(i).second);
    requestObject.setProperty("requestQueryParams", queryParamsObject);

    QScriptValue result = _scriptFunction.call(_scriptFunction, QScriptValueList() << requestObject);

    if (result.isError())
    {
        if (request->state() == HttpRequest::SendingHeaders)
        {
            // Nothing was sent yet... We have a chance to let the client know we had an error.
            request->writeResponseString(500, HttpHeaderCollection(), objectToString(result));
        }
        engine->clearExceptions();
        return true;
    }

    return result.toBool();
}

NResponse & NTcpServerSocketCfgServices::postSharedDir(const NClientSession & session, NResponse & response)
{
    //logDebug("NTcpServerSocketCfgServices::svcPostSharedDir", session.postData());

    QScriptEngine se;
    se.evaluate("var data = " + QString::fromUtf8(session.content()));
    QScriptValue svReadData = se.globalObject().property("data").property("data");
    NDir dir = NDir(svReadData.property("path").toString(),
                    svReadData.property("recursive").toBool(),
                    svReadData.property("shared").toBool());

    int id  = getConfig().addSharedDirectory(dir);

    QScriptValue svRoot = se.newObject();
    svRoot.setProperty(RSP_SUCCESS , QScriptValue(true));
    svRoot.setProperty(RSP_MSG, QScriptValue(RSP_MSG_LOADED));

    // we add new user to response
    QScriptValue svData = se.newArray(1);
    svRoot.setProperty(RSP_DATA, svData);
    QScriptValue svDir = se.newObject();
    svData.setProperty(0, svDir);
    svDir.setProperty("id", id);
    svDir.setProperty("path", dir.path());
    svDir.setProperty("recursive", dir.recursive());
    svDir.setProperty("shared", dir.shared());
    svDir.setProperty("exists", dir.exists());
    //logDebug("NJson::serialize(svRoot)", NJson::serialize(svRoot));
    response.setData(NJson::serializeToQByteArray(svRoot));
    return response;
}

void tst_QScriptValueIterator::assignObjectToIterator()
{
    QScriptEngine eng;
    QScriptValue obj1 = eng.newObject();
    obj1.setProperty("foo", 123);
    QScriptValue obj2 = eng.newObject();
    obj2.setProperty("bar", 456);

    QScriptValueIterator it(obj1);
    QVERIFY(it.hasNext());
    it.next();
    it = obj2;
    QVERIFY(it.hasNext());
    it.next();
    QCOMPARE(it.name(), QString::fromLatin1("bar"));

    it = obj1;
    QVERIFY(it.hasNext());
    it.next();
    QCOMPARE(it.name(), QString::fromLatin1("foo"));

    it = obj2;
    QVERIFY(it.hasNext());
    it.next();
    QCOMPARE(it.name(), QString::fromLatin1("bar"));

    it = obj2;
    QVERIFY(it.hasNext());
    it.next();
    QCOMPARE(it.name(), QString::fromLatin1("bar"));
}

void tst_QScriptValueIterator::iterateBackAndForth()
{
    QScriptEngine engine;
    {
        QScriptValue object = engine.newObject();
        object.setProperty("foo", QScriptValue(&engine, "bar"));
        object.setProperty("rab", QScriptValue(&engine, "oof"),
                           QScriptValue::SkipInEnumeration); // should not affect iterator
        QScriptValueIterator it(object);
        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QLatin1String("foo"));
        QVERIFY(it.hasPrevious());
        it.previous();
        QCOMPARE(it.name(), QLatin1String("foo"));
        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QLatin1String("foo"));
        QVERIFY(it.hasPrevious());
        it.previous();
        QCOMPARE(it.name(), QLatin1String("foo"));
        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QLatin1String("foo"));
        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QLatin1String("rab"));
        QVERIFY(it.hasPrevious());
        it.previous();
        QCOMPARE(it.name(), QLatin1String("rab"));
        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QLatin1String("rab"));
        QVERIFY(it.hasPrevious());
        it.previous();
        QCOMPARE(it.name(), QLatin1String("rab"));
    }
    {
        // hasNext() and hasPrevious() cache their result; verify that the result is in sync
        QScriptValue object = engine.newObject();
        object.setProperty("foo", QScriptValue(&engine, "bar"));
        object.setProperty("rab", QScriptValue(&engine, "oof"));
        QScriptValueIterator it(object);
        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QString::fromLatin1("foo"));
        QVERIFY(it.hasNext());
        it.previous();
        QCOMPARE(it.name(), QString::fromLatin1("foo"));
        QVERIFY(!it.hasPrevious());
        it.next();
        QCOMPARE(it.name(), QString::fromLatin1("foo"));
        QVERIFY(it.hasPrevious());
        it.next();
        QCOMPARE(it.name(), QString::fromLatin1("rab"));
    }
}

bool HttpDaemon::Private::initialize()
{
  QScriptEngine engine;
   
  QFile file(configScript);
  if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
    qDebug() << file.errorString();
    return false;
  }

  QTextStream stream (&file);

  auto globalObject = engine.globalObject();
  auto configObject = engine.newObject();
  auto typesObject  = engine.newObject();
  auto actionObject = engine.newObject();
  auto handlerObject= engine.newObject();
  auto addTypeFn    = engine.newFunction(addType);
  auto setPortFn    = engine.newFunction(setPort);
  auto addReqHdrFn  = engine.newFunction(addRequestHeader);
  auto setDocRootFn = engine.newFunction(setDocumentRoot);
  auto setServNamFn = engine.newFunction(setServerName);
  auto setServAdmFn = engine.newFunction(setServerAdmin);
  auto setErrLogFn  = engine.newFunction(setErrorLog);
  auto actionFn     = engine.newFunction(action);
  auto addHandlerFn = engine.newFunction(addHandler);
  
  configObject.setProperty(settings_types, typesObject);
  configObject.setProperty(settings_action, actionObject);
  configObject.setProperty(settings_handler, handlerObject);
  globalObject.setProperty(settings_conf, configObject);
  configObject.setProperty("action", actionFn);
  configObject.setProperty("addHandler", addHandlerFn);
  configObject.setProperty("addType", addTypeFn);
  configObject.setProperty("setListenPort", setPortFn);
  configObject.setProperty("addRequestHeader", addReqHdrFn);
  configObject.setProperty("setDocumentRoot", setDocRootFn);
  configObject.setProperty("setServerName", setServNamFn);
  configObject.setProperty("setServerAdmin", setServAdmFn);
  configObject.setProperty("setErrorLog", setErrLogFn);
  
  auto const program = stream.readAll();
  auto const result = engine.evaluate(program, file.fileName(), 1);
  if (engine.hasUncaughtException()) {
    auto line = engine.uncaughtExceptionLineNumber();
    qDebug() << "uncaught exception at line" << line << ":" << result.toString();
    return false;
  }
  auto configValue = engine.evaluate("(function(){return (JSON.stringify(configure));})();");
  serverSettings = QJsonDocument::fromJson(configValue.toString().toLocal8Bit());
  //  qDebug () << serverSettings.toJson();
  return true;
}

void tst_QScriptValueIterator::iterateForward()
{
    QFETCH(QStringList, propertyNames);
    QFETCH(QStringList, propertyValues);
    QMap<QString, QString> pmap;
    QVERIFY(propertyNames.size() == propertyValues.size());

    QScriptEngine engine;
    QScriptValue object = engine.newObject();
    for (int i = 0; i < propertyNames.size(); ++i) {
        QString name = propertyNames.at(i);
        QString value = propertyValues.at(i);
        pmap.insert(name, value);
        object.setProperty(name, QScriptValue(&engine, value));
    }
    QScriptValue otherObject = engine.newObject();
    otherObject.setProperty("foo", QScriptValue(&engine, 123456));
    otherObject.setProperty("protoProperty", QScriptValue(&engine, 654321));
    object.setPrototype(otherObject); // should not affect iterator

    QStringList lst;
    QScriptValueIterator it(object);
    while (!pmap.isEmpty()) {
        QCOMPARE(it.hasNext(), true);
        QCOMPARE(it.hasNext(), true);
        it.next();
        QString name = it.name();
        QCOMPARE(pmap.contains(name), true);
        QCOMPARE(it.name(), name);
        QCOMPARE(it.flags(), object.propertyFlags(name));
        QCOMPARE(it.value().strictlyEquals(QScriptValue(&engine, pmap.value(name))), true);
        QCOMPARE(it.scriptName(), engine.toStringHandle(name));
        pmap.remove(name);
        lst.append(name);
    }

    QCOMPARE(it.hasNext(), false);
    QCOMPARE(it.hasNext(), false);

    it.toFront();
    for (int i = 0; i < lst.count(); ++i) {
        QCOMPARE(it.hasNext(), true);
        it.next();
        QCOMPARE(it.name(), lst.at(i));
    }

    for (int i = 0; i < lst.count(); ++i) {
        QCOMPARE(it.hasPrevious(), true);
        it.previous();
        QCOMPARE(it.name(), lst.at(lst.count()-1-i));
    }
    QCOMPARE(it.hasPrevious(), false);
}

// Check the overhead of the extension "instanceOf"
void tst_QScriptClass::hasInstance()
{
    QScriptEngine eng;
    ExtensionScriptClass cls(&eng);
    QScriptValue obj = eng.newObject(&cls);
    obj.setProperty("foo", 123);
    QScriptValue plain = eng.newObject();
    plain.setProperty("foo", obj.property("foo"));
    QBENCHMARK {
        for (int i = 0; i < iterationNumber; ++i)
            (void)plain.instanceOf(obj);
    }
}

void GeoHelper::searchFinishedSlot(QGeoSearchReply *reply)
{
    if (reply->error() == QGeoSearchReply::NoError)
    {
        QScriptEngine scriptEngine;
        QScriptValue replyObject = scriptEngine.newArray();

        QList<QGeoPlace> places = reply->places();
        for (int i = 0; i < places.count(); i++)
        {
            QScriptValue placeObject = scriptEngine.newObject();

            QScriptValue coordinateObject = scriptEngine.newObject();
            QGeoCoordinate coordinate = places[i].coordinate();
            coordinateObject.setProperty("latitude", QScriptValue(coordinate.latitude()));
            coordinateObject.setProperty("longitude", QScriptValue(coordinate.longitude()));
            placeObject.setProperty("coordinate", coordinateObject);

            QScriptValue addressObject = scriptEngine.newObject();
            QGeoAddress address = places[i].address();

            if (!address.isEmpty())
            {
                addressObject.setProperty("country", address.country());
                addressObject.setProperty("countryCode", address.countryCode());
                addressObject.setProperty("state", address.state());
                addressObject.setProperty("county", address.county());
                addressObject.setProperty("city", address.city());
                addressObject.setProperty("district", address.district());
                addressObject.setProperty("street", address.street());
                addressObject.setProperty("postcode", address.postcode());

            }

            placeObject.setProperty("address", addressObject);
            replyObject.setProperty(i, placeObject);
        }


        QScriptValue fun = scriptEngine.evaluate("(function(a) { return JSON.stringify(a); })");
        QScriptValueList args;
        args << replyObject;
        QScriptValue result = fun.call(QScriptValue(), args);

        emit searchReply(result.toString());
    }


}

void tst_QScriptContext::thisObject()
{
    QScriptEngine eng;

    QScriptValue fun = eng.newFunction(get_thisObject);
    eng.globalObject().setProperty("get_thisObject", fun);

    {
        QScriptValue result = eng.evaluate("get_thisObject()");
        QCOMPARE(result.isObject(), true);
        QCOMPARE(result.toString(), QString("[object global]"));
    }

    {
        QScriptValue result = eng.evaluate("get_thisObject.apply(new Number(123))");
        QCOMPARE(result.isObject(), true);
        QCOMPARE(result.toNumber(), 123.0);
    }

    {
        QScriptValue obj = eng.newObject();
        eng.currentContext()->setThisObject(obj);
        QVERIFY(eng.currentContext()->thisObject().equals(obj));
        eng.currentContext()->setThisObject(QScriptValue());
        QVERIFY(eng.currentContext()->thisObject().equals(obj));

        QScriptEngine eng2;
        QScriptValue obj2 = eng2.newObject();
        QTest::ignoreMessage(QtWarningMsg, "QScriptContext::setThisObject() failed: cannot set an object created in a different engine");
        eng.currentContext()->setThisObject(obj2);
    }
}

void tst_QScriptContext::callee()
{
    QScriptEngine eng;

    {
        QScriptValue fun = eng.newFunction(get_callee);
        fun.setProperty("foo", QScriptValue(&eng, "bar"));
        eng.globalObject().setProperty("get_callee", fun);

        QScriptValue result = eng.evaluate("get_callee()");
        QCOMPARE(result.isFunction(), true);
        QCOMPARE(result.property("foo").toString(), QString("bar"));
    }

    // callee when toPrimitive() is called internally
    {
        QScriptValue fun = eng.newFunction(store_callee_and_return_primitive);
        QScriptValue obj = eng.newObject();
        obj.setProperty("toString", fun);
        QVERIFY(!obj.property("callee").isValid());
        (void)obj.toString();
        QVERIFY(obj.property("callee").isFunction());
        QVERIFY(obj.property("callee").strictlyEquals(fun));

        obj.setProperty("callee", QScriptValue());
        QVERIFY(!obj.property("callee").isValid());
        obj.setProperty("valueOf", fun);
        (void)obj.toNumber();
        QVERIFY(obj.property("callee").isFunction());
        QVERIFY(obj.property("callee").strictlyEquals(fun));
    }
}

NResponse & NTcpServerSocketCfgServices::deleteSharedDir(const NClientSession & session, NResponse & response)
{
    logDebug("NTcpServerSocketCfgServices::svcDeleteSharedDir", session.resource());
    int id = 0;
    QScriptEngine se;
    QScriptValue svRoot = se.newObject();
    QString strId = session.resource();
    bool ok;
    id = strId.toInt(&ok);
    if (!ok)
    {
        svRoot.setProperty(RSP_SUCCESS , QScriptValue(false));
        svRoot.setProperty(RSP_MSG, QScriptValue(RSP_MSG_INVALID_INDEX));
        //logDebug("NJson::serialize(svRoot)", NJson::serialize(svRoot));
        response.setData(NJson::serializeToQByteArray(svRoot));
        return response;
    }

    NDirList sharedDirs = getConfig().sharedDirectories();
    if (id >= sharedDirs.count())
    {
        svRoot.setProperty(RSP_SUCCESS , QScriptValue(false));
        svRoot.setProperty(RSP_MSG, QScriptValue(RSP_MSG_INVALID_INDEX));
        //logDebug("NJson::serialize(svRoot)", NJson::serialize(svRoot));
        response.setData(NJson::serializeToQByteArray(svRoot));
        return response;
    }
    getConfig().removeSharedDirectory(id);

    svRoot.setProperty(RSP_SUCCESS , QScriptValue(true));
    svRoot.setProperty(RSP_MSG, QScriptValue(QString(RSP_MSG_N_DELETED).arg(id)));
    //logDebug("NJson::serialize(svRoot)", NJson::serialize(svRoot));
    response.setData(NJson::serializeToQByteArray(svRoot));
    return response;
}

NResponse & NTcpServerSocketMusicServices::getYear(const NClientSession & session,
                                                      NResponse & response)
{
    bool ok;
    QString search = session.url().queryItemValue("search");
    QStringList searches = search.split("+", QString::SkipEmptyParts);
    searches = NConvert_n::fromUTF8PercentEncoding(searches);
    int start = session.url().queryItemValue("start").toInt();
    int limit  = session.url().queryItemValue("limit").toInt(&ok);
    if (!ok)
        limit = 25;
    QString dir = session.url().queryItemValue("dir");

    const NTcpServerAuthSession authSession = getAuthServices().getSession(session.sessionId());
    logMessage(session.socket()->peerAddress().toString(),
          QString("%1 is looking for year: \"%2\"; start: %3; limit: %4, dir:\"%5\"").
          arg(authSession.login()).arg(NConvert_n::fromUTF8PercentEncoding(search)).arg(start).arg(limit).arg(dir));


    int totalCount = NMDB.getYearListCount(searches);
    QScriptEngine se;
    QScriptValue svRoot = se.newObject();
    QScriptValue svData = se.newArray(totalCount);
    svRoot.setProperty(RSP_DATA, svData);

    bool succeed = NMDB.getYearList(se, svData, totalCount, searches, start,
                                        limit, dir);
    setJsonRootReponse(svRoot, totalCount, succeed);

    response.setData(NJson::serializeToQByteArray(svRoot));
    return response;
}

QScriptValue variantListToScriptValue(QVariantList& variantList, QScriptEngine& scriptEngine) {
    QScriptValue scriptValue = scriptEngine.newObject();

    scriptValue.setProperty("length", variantList.size());
    int i = 0;
    foreach (QVariant v, variantList) {
        scriptValue.setProperty(i++, variantToScriptValue(v, scriptEngine));
    }

void tst_QScriptClass::newInstance()
{
    QScriptEngine eng;

    TestClass cls(&eng);

    QScriptValue obj1 = eng.newObject(&cls);
    QVERIFY(!obj1.data().isValid());
    QVERIFY(obj1.prototype().strictlyEquals(cls.prototype()));
    QEXPECT_FAIL("", "classname is not implemented", Continue);
    QCOMPARE(obj1.toString(), QString::fromLatin1("[object TestClass]"));
    QCOMPARE(obj1.scriptClass(), (QScriptClass*)&cls);

    QScriptValue num(&eng, 456);
    QScriptValue obj2 = eng.newObject(&cls, num);
    QVERIFY(obj2.data().strictlyEquals(num));
    QVERIFY(obj2.prototype().strictlyEquals(cls.prototype()));
    QCOMPARE(obj2.scriptClass(), (QScriptClass*)&cls);

    QScriptValue obj3 = eng.newObject();
    QCOMPARE(obj3.scriptClass(), (QScriptClass*)0);
    obj3.setScriptClass(&cls);
    QCOMPARE(obj3.scriptClass(), (QScriptClass*)&cls);

    obj3.setScriptClass(0);
    QCOMPARE(obj3.scriptClass(), (QScriptClass*)0);
    obj3.setScriptClass(&cls);
    QCOMPARE(obj3.scriptClass(), (QScriptClass*)&cls);

    TestClass cls2(&eng);
    obj3.setScriptClass(&cls2);
    QCOMPARE(obj3.scriptClass(), (QScriptClass*)&cls2);

    // undefined behavior really, but shouldn't crash
    QScriptValue arr = eng.newArray();
    QVERIFY(arr.isArray());
    QCOMPARE(arr.scriptClass(), (QScriptClass*)0);
    QTest::ignoreMessage(QtWarningMsg, "QScriptValue::setScriptClass() failed: cannot change class of non-QScriptObject");
    arr.setScriptClass(&cls);
    QEXPECT_FAIL("", "Changing class of arbitrary script object is not allowed (it's OK)", Continue);
    QCOMPARE(arr.scriptClass(), (QScriptClass*)&cls);
    QEXPECT_FAIL("", "Changing class of arbitrary script object is not allowed (it's OK)", Continue);
    QVERIFY(!arr.isArray());
    QVERIFY(arr.isObject());
}