QByteArray
QDeclarativeGestureAreaParser::compile(const QList<QDeclarativeCustomParserProperty> &props)
{
    QByteArray rv;
    QDataStream ds(&rv, QIODevice::WriteOnly);

    for(int ii = 0; ii < props.count(); ++ii)
    {
        QString propName = QString::fromUtf8(props.at(ii).name());
        Qt::GestureType type;

        if (propName == QLatin1String("onTap")) {
            type = Qt::TapGesture;
        } else if (propName == QLatin1String("onTapAndHold")) {
            type = Qt::TapAndHoldGesture;
        } else if (propName == QLatin1String("onPan")) {
            type = Qt::PanGesture;
        } else if (propName == QLatin1String("onPinch")) {
            type = Qt::PinchGesture;
        } else if (propName == QLatin1String("onSwipe")) {
            type = Qt::SwipeGesture;
        } else if (propName == QLatin1String("onGesture")) {
            type = Qt::CustomGesture;
        } else {
            error(props.at(ii), QDeclarativeGestureArea::tr("Cannot assign to non-existent property \"%1\"").arg(propName));
            return QByteArray();
        }

        QList<QVariant> values = props.at(ii).assignedValues();

        for (int i = 0; i < values.count(); ++i) {
            const QVariant &value = values.at(i);

            if (value.userType() == qMetaTypeId<QDeclarativeCustomParserNode>()) {
                error(props.at(ii), QDeclarativeGestureArea::tr("GestureArea: nested objects not allowed"));
                return QByteArray();
            } else if (value.userType() == qMetaTypeId<QDeclarativeCustomParserProperty>()) {
                error(props.at(ii), QDeclarativeGestureArea::tr("GestureArea: syntax error"));
                return QByteArray();
            } else {
                QDeclarativeParser::Variant v = qvariant_cast<QDeclarativeParser::Variant>(value);
                if (v.isScript()) {
                    ds << propName;
                    ds << int(type);
                    ds << v.asScript();
                } else {
                    error(props.at(ii), QDeclarativeGestureArea::tr("GestureArea: script expected"));
                    return QByteArray();
                }
            }
        }
    }

    return rv;
}
示例#2
0
QByteArray
QDeclarativeConnectionsParser::compile(const QList<QDeclarativeCustomParserProperty> &props)
{
    QByteArray rv;
    QDataStream ds(&rv, QIODevice::WriteOnly);

    for(int ii = 0; ii < props.count(); ++ii)
    {
        QString propName = QString::fromUtf8(props.at(ii).name());
        if (!propName.startsWith(QLatin1String("on")) || !propName.at(2).isUpper()) {
            error(props.at(ii), QDeclarativeConnections::tr("Cannot assign to non-existent property \"%1\"").arg(propName));
            return QByteArray();
        }

        QList<QVariant> values = props.at(ii).assignedValues();

        for (int i = 0; i < values.count(); ++i) {
            const QVariant &value = values.at(i);

            if (value.userType() == qMetaTypeId<QDeclarativeCustomParserNode>()) {
                error(props.at(ii), QDeclarativeConnections::tr("Connections: nested objects not allowed"));
                return QByteArray();
            } else if (value.userType() == qMetaTypeId<QDeclarativeCustomParserProperty>()) {
                error(props.at(ii), QDeclarativeConnections::tr("Connections: syntax error"));
                return QByteArray();
            } else {
                QDeclarativeParser::Variant v = qvariant_cast<QDeclarativeParser::Variant>(value);
                if (v.isScript()) {
                    ds << propName;
                    ds << v.asScript();
                } else {
                    error(props.at(ii), QDeclarativeConnections::tr("Connections: script expected"));
                    return QByteArray();
                }
            }
        }
    }

    return rv;
}
示例#3
0
bool QDeclarativeListModelParser::compileProperty(const QDeclarativeCustomParserProperty &prop, QList<ListInstruction> &instr, QByteArray &data)
{
    QList<QVariant> values = prop.assignedValues();
    for(int ii = 0; ii < values.count(); ++ii) {
        const QVariant &value = values.at(ii);

        if(value.userType() == qMetaTypeId<QDeclarativeCustomParserNode>()) {
            QDeclarativeCustomParserNode node =
                qvariant_cast<QDeclarativeCustomParserNode>(value);

            if (node.name() != listElementTypeName) {
                const QMetaObject *mo = resolveType(node.name());
                if (mo != &QDeclarativeListElement::staticMetaObject) {
                    error(node, QDeclarativeListModel::tr("ListElement: cannot contain nested elements"));
                    return false;
                }
                listElementTypeName = node.name(); // cache right name for next time
            }

            {
            ListInstruction li;
            li.type = ListInstruction::Push;
            li.dataIdx = -1;
            instr << li;
            }

            QList<QDeclarativeCustomParserProperty> props = node.properties();
            for(int jj = 0; jj < props.count(); ++jj) {
                const QDeclarativeCustomParserProperty &nodeProp = props.at(jj);
                if (nodeProp.name().isEmpty()) {
                    error(nodeProp, QDeclarativeListModel::tr("ListElement: cannot contain nested elements"));
                    return false;
                }
                if (nodeProp.name() == "id") {
                    error(nodeProp, QDeclarativeListModel::tr("ListElement: cannot use reserved \"id\" property"));
                    return false;
                }

                ListInstruction li;
                int ref = data.count();
                data.append(nodeProp.name());
                data.append('\0');
                li.type = ListInstruction::Set;
                li.dataIdx = ref;
                instr << li;

                if(!compileProperty(nodeProp, instr, data))
                    return false;

                li.type = ListInstruction::Pop;
                li.dataIdx = -1;
                instr << li;
            }

            {
            ListInstruction li;
            li.type = ListInstruction::Pop;
            li.dataIdx = -1;
            instr << li;
            }

        } else {

            QDeclarativeParser::Variant variant =
                qvariant_cast<QDeclarativeParser::Variant>(value);

            int ref = data.count();

            QByteArray d;
            d += char(variant.type()); // type tag
            if (variant.isString()) {
                d += variant.asString().toUtf8();
            } else if (variant.isNumber()) {
                d += QByteArray::number(variant.asNumber(),'g',20);
            } else if (variant.isBoolean()) {
                d += char(variant.asBoolean());
            } else if (variant.isScript()) {
                if (definesEmptyList(variant.asScript())) {
                    d[0] = char(QDeclarativeParser::Variant::Invalid); // marks empty list
                } else {
                    QByteArray script = variant.asScript().toUtf8();
                    int v = evaluateEnum(script);
                    if (v<0) {
                        if (script.startsWith("QT_TR_NOOP(\"") && script.endsWith("\")")) {
                            d[0] = char(QDeclarativeParser::Variant::String);
                            d += script.mid(12,script.length()-14);
                        } else {
                            error(prop, QDeclarativeListModel::tr("ListElement: cannot use script for property value"));
                            return false;
                        }
                    } else {
                        d[0] = char(QDeclarativeParser::Variant::Number);
                        d += QByteArray::number(v);
                    }
                }
            }
            d.append('\0');
            data.append(d);

            ListInstruction li;
            li.type = ListInstruction::Value;
            li.dataIdx = ref;
            instr << li;
        }
    }

    return true;
}