C++ QQmlType::isComposite方法代码示例

void tst_qqmlmetatype::registrationType()
{
    QQmlType *type = QQmlMetaType::qmlType(QString("TestType"), QString("Test"), 1, 0);
    QVERIFY(type);
    QVERIFY(!type->isInterface());
    QVERIFY(!type->isSingleton());
    QVERIFY(!type->isComposite());

    type = QQmlMetaType::qmlType(QString("TestTypeSingleton"), QString("Test"), 1, 0);
    QVERIFY(type);
    QVERIFY(!type->isInterface());
    QVERIFY(type->isSingleton());
    QVERIFY(!type->isComposite());

    type = QQmlMetaType::qmlType(QString("TestTypeComposite"), QString("Test"), 1, 0);
    QVERIFY(type);
    QVERIFY(!type->isInterface());
    QVERIFY(!type->isSingleton());
    QVERIFY(type->isComposite());
}

//.........这里部分代码省略.........
            QString changedSigName = stringAt(p->nameIndex) + QLatin1String("Changed");
            seenSignals.insert(changedSigName);

            cache->appendSignal(changedSigName, flags, effectiveMethodIndex++);
        }
    }

    // Dynamic signals
    for (const QmlIR::Signal *s = obj->firstSignal(); s; s = s->next) {
        const int paramCount = s->parameters->count;

        QList<QByteArray> names;
        QVarLengthArray<int, 10> paramTypes(paramCount?(paramCount + 1):0);

        if (paramCount) {
            paramTypes[0] = paramCount;

            QmlIR::SignalParameter *param = s->parameters->first;
            for (int i = 0; i < paramCount; ++i, param = param->next) {
                names.append(stringAt(param->nameIndex).toUtf8());
                if (param->type < builtinTypeCount) {
                    // built-in type
                    paramTypes[i + 1] = builtinTypes[param->type].metaType;
                } else {
                    // lazily resolved type
                    Q_ASSERT(param->type == QV4::CompiledData::Property::Custom);
                    const QString customTypeName = stringAt(param->customTypeNameIndex);
                    QQmlType *qmltype = 0;
                    if (!imports->resolveType(customTypeName, &qmltype, 0, 0, 0)) {
                        compiler->recordError(s->location, tr("Invalid signal parameter type: %1").arg(customTypeName));
                        return false;
                    }

                    if (qmltype->isComposite()) {
                        // Composite type usage
                        qDebug() << "Composite type usage2" << qmltype->sourceUrl() << "Line" << param->location.line << "Col" << param->location.column;
                        QmlCompilation::TypeReference *typeRef = compiler->findTypeRef(param->customTypeNameIndex);
                        Q_ASSERT(typeRef->component->compiledData != NULL);
                        paramTypes[i + 1] = typeRef->component->compiledData->metaTypeId;
                    } else {
                        paramTypes[i + 1] = qmltype->typeId();
                    }
                }
            }
        }

        ((QQmlVMEMetaData *)dynamicData.data())->signalCount++;

        quint32 flags = QQmlPropertyData::IsSignal | QQmlPropertyData::IsFunction |
                        QQmlPropertyData::IsVMESignal;
        if (paramCount)
            flags |= QQmlPropertyData::HasArguments;

        QString signalName = stringAt(s->nameIndex);
        if (seenSignals.contains(signalName)) {
            compiler->recordError(s->location, tr("Duplicate signal name: invalid override of property change signal or superclass signal"));
            return false;
        }
        seenSignals.insert(signalName);

        cache->appendSignal(signalName, flags, effectiveMethodIndex++,
                            paramCount?paramTypes.constData():0, names);
    }


    // Dynamic slots

bool EnumTypeResolver::tryQualifiedEnumAssignment(const QmlIR::Object *obj, const QQmlPropertyCache *propertyCache, const QQmlPropertyData *prop, QmlIR::Binding *binding)
{
    bool isIntProp = (prop->propType == QMetaType::Int) && !prop->isEnum();
    if (!prop->isEnum() && !isIntProp)
        return true;

    if (!prop->isWritable() && !(binding->flags & QV4::CompiledData::Binding::InitializerForReadOnlyDeclaration)) {
        compiler->recordError(binding->location, tr("Invalid property assignment: \"%1\" is a read-only property").arg(compiler->stringAt(binding->propertyNameIndex)));
        return false;
    }

    Q_ASSERT(binding->type = QV4::CompiledData::Binding::Type_Script);
    const QString string = compiler->bindingAsString(obj, binding->value.compiledScriptIndex);
    if (!string.constData()->isUpper())
        return true;

    int dot = string.indexOf(QLatin1Char('.'));
    if (dot == -1 || dot == string.length()-1)
        return true;

    if (string.indexOf(QLatin1Char('.'), dot+1) != -1)
        return true;

    QHashedStringRef typeName(string.constData(), dot);
    QString enumValue = string.mid(dot+1);

    if (isIntProp) {
        // Allow enum assignment to ints.
        bool ok;
        int enumval = evaluateEnum(typeName.toString(), enumValue.toUtf8(), &ok);
        if (ok) {
            binding->type = QV4::CompiledData::Binding::Type_Number;
            binding->value.d = (double)enumval;
            binding->flags |= QV4::CompiledData::Binding::IsResolvedEnum;
        }
        return true;
    }
    QQmlType *type = 0;
    imports->resolveType(typeName, &type, 0, 0, 0);

    if (!type && typeName != QLatin1String("Qt"))
        return true;
    if (type && type->isComposite()) //No enums on composite (or composite singleton) types
        return true;

    int value = 0;
    bool ok = false;

    QQmlCompiledData::TypeReference *tr = resolvedTypes->value(obj->inheritedTypeNameIndex);
    if (type && tr && tr->type == type) {
        QMetaProperty mprop = propertyCache->firstCppMetaObject()->property(prop->coreIndex);

        // When these two match, we can short cut the search
        if (mprop.isFlagType()) {
            value = mprop.enumerator().keysToValue(enumValue.toUtf8().constData(), &ok);
        } else {
            value = mprop.enumerator().keyToValue(enumValue.toUtf8().constData(), &ok);
        }
    } else {
        // Otherwise we have to search the whole type
        if (type) {
            value = type->enumValue(QHashedStringRef(enumValue), &ok);
        } else {
            QByteArray enumName = enumValue.toUtf8();
            const QMetaObject *metaObject = StaticQtMetaObject::get();
            for (int ii = metaObject->enumeratorCount() - 1; !ok && ii >= 0; --ii) {
                QMetaEnum e = metaObject->enumerator(ii);
                value = e.keyToValue(enumName.constData(), &ok);
            }
        }
    }

    if (!ok)
        return true;

    binding->type = QV4::CompiledData::Binding::Type_Number;
    binding->value.d = (double)value;
    binding->flags |= QV4::CompiledData::Binding::IsResolvedEnum;
    return true;
}