C++ QMetaMethod::methodIndex方法代码示例

void QDeclarativePropertyCache::Data::lazyLoad(const QMetaMethod &m)
{
    coreIndex = m.methodIndex();
    relatedIndex = -1;
    flags |= Data::IsFunction;
    if (m.methodType() == QMetaMethod::Signal)
        flags |= Data::IsSignal;
    propType = QVariant::Invalid;

    const char *returnType = m.typeName();
    if (returnType && *returnType) {
        propTypeName = returnType;
        flags |= Data::NotFullyResolved;
    }

    const char *signature = m.signature();
    while (*signature != '(') { Q_ASSERT(*signature != 0); ++signature; }

    ++signature;
    if (*signature != ')') {
        flags |= Data::HasArguments;
        if (0 == ::strcmp(signature, "QDeclarativeV8Function*)")) {
            flags |= Data::IsV8Function;
        }
    }

    revision = m.revision();
}

void Nuria::ObjectWrapperResourcePrivate::connectToSignal (QMetaMethod method) {
	// Connect objects' signal to our homegrown qt_metacall().
	int index = method.methodIndex ();
	if (!QMetaObject::connect (this->object, index, this, index, Qt::DirectConnection)) {
		nError() << "connect() failed on" << this->object << "for signal" << method.methodSignature ();
	}
	
}

void NodeInstanceSignalSpy::registerObject(QObject *spiedObject, const PropertyName &prefix)
{
    if (m_registeredObjectList.contains(spiedObject)) // prevent cycles
        return;

    m_registeredObjectList.append(spiedObject);
    for (int index = QObject::staticMetaObject.propertyOffset();
         index < spiedObject->metaObject()->propertyCount();
         index++) {
             QMetaProperty metaProperty = spiedObject->metaObject()->property(index);

             // handle dot properties and connect the signals to the object
             if (metaProperty.isReadable()
                 && !metaProperty.isWritable()
                 && QDeclarativeMetaType::isQObject(metaProperty.userType())) {
                  QObject *propertyObject = QDeclarativeMetaType::toQObject(metaProperty.read(spiedObject));
                  if (propertyObject)
                      registerObject(propertyObject, prefix + metaProperty.name() + '.');
             } else if (metaProperty.hasNotifySignal()) {
                 QMetaMethod metaMethod = metaProperty.notifySignal();
                 bool isConnecting = QMetaObject::connect(spiedObject, metaMethod.methodIndex(), this, methodeOffset, Qt::DirectConnection);
                 Q_ASSERT(isConnecting);
                 Q_UNUSED(isConnecting);
                 m_indexPropertyHash.insert(methodeOffset, prefix + metaProperty.name());
                 methodeOffset++;
             }

             // search recursive in objects
             if (metaProperty.isReadable()
                 && metaProperty.isWritable()
                 && QDeclarativeMetaType::isQObject(metaProperty.userType())) {
                 QObject *propertyObject = QDeclarativeMetaType::toQObject(metaProperty.read(spiedObject));
                 if (propertyObject)
                     registerObject(propertyObject, prefix + metaProperty.name() + '/');
             }

             // search recursive in objects list
             if (metaProperty.isReadable()
                 && QDeclarativeMetaType::isList(metaProperty.userType())) {
                 QDeclarativeListReference list(spiedObject, metaProperty.name());
                 if (list.canCount() && list.canAt()) {
                     for (int i = 0; i < list.count(); i++) {
                         QObject *propertyObject = list.at(i);
                         if (propertyObject)
                             registerObject(propertyObject, prefix + metaProperty.name() + '/');
                     }
                 }
             }
         }
}

void QDeclarativePropertyCache::Data::load(const QMetaMethod &m)
{
    coreIndex = m.methodIndex();
    relatedIndex = -1;
    flags |= Data::IsFunction;
    if (m.methodType() == QMetaMethod::Signal)
        flags |= Data::IsSignal;
    propType = m.returnType();

    QList<QByteArray> params = m.parameterTypes();
    if (!params.isEmpty())
        flags |= Data::HasArguments;
    revision = m.revision();
}

void Nuria::ObjectWrapperResourcePrivate::initMethods () {
	
	// Iterate over the objects signals and slots
	for (int i = this->meta->methodOffset (); i < this->meta->methodCount (); i++) {
		QMetaMethod m = this->meta->method (i);
		QMetaMethod::MethodType type = m.methodType ();
		
		// Store public slots and signals
		if (type == QMetaMethod::Signal || (type == QMetaMethod::Slot && m.access () == QMetaMethod::Public)) {
			Method descriptor = createMetaMethod (m);
			addMethodToPropertyList (m, descriptor);
			this->methods.insert (m.methodIndex (), descriptor);
		}
		
		// Connect to signals
		if (type == QMetaMethod::Signal) {
			connectToSignal (m);
		}
		
	}
	
}

//.........这里部分代码省略.........
                    QDeclarativeMetaType::customStringConverter(data.type);
                QVariant v = (*converter)(primitive);

                QMetaProperty prop = 
                        target->metaObject()->property(instr.assignCustomType.propertyIndex);
                if (v.isNull() || ((int)prop.type() != data.type && prop.userType() != data.type)) 
                    VME_EXCEPTION(QCoreApplication::translate("QDeclarativeVME","Cannot assign value %1 to property %2").arg(primitive).arg(QString::fromUtf8(prop.name())));

                void *a[] = { (void *)v.data(), 0, &status, &flags };
                QMetaObject::metacall(target, QMetaObject::WriteProperty, 
                                      instr.assignCustomType.propertyIndex, a);
            }
            break;

        case QDeclarativeInstruction::AssignSignalObject:
            {
                // XXX optimize

                QObject *assign = stack.pop();
                QObject *target = stack.top();
                int sigIdx = instr.assignSignalObject.signal;
                const QByteArray &pr = datas.at(sigIdx);

                QDeclarativeProperty prop(target, QString::fromUtf8(pr));
                if (prop.type() & QDeclarativeProperty::SignalProperty) {

                    QMetaMethod method = QDeclarativeMetaType::defaultMethod(assign);
                    if (method.signature() == 0)
                        VME_EXCEPTION(QCoreApplication::translate("QDeclarativeVME","Cannot assign object type %1 with no default method").arg(QString::fromLatin1(assign->metaObject()->className())));

                    if (!QMetaObject::checkConnectArgs(prop.method().signature(), method.signature()))
                        VME_EXCEPTION(QCoreApplication::translate("QDeclarativeVME","Cannot connect mismatched signal/slot %1 %vs. %2").arg(QString::fromLatin1(method.signature())).arg(QString::fromLatin1(prop.method().signature())));

                    QDeclarativePropertyPrivate::connect(target, prop.index(), assign, method.methodIndex());

                } else {
                    VME_EXCEPTION(QCoreApplication::translate("QDeclarativeVME","Cannot assign an object to signal property %1").arg(QString::fromUtf8(pr)));
                }


            }
            break;

        case QDeclarativeInstruction::StoreSignal:
            {
                QObject *target = stack.top();
                QObject *context = stack.at(stack.count() - 1 - instr.storeSignal.context);

                QMetaMethod signal = target->metaObject()->method(instr.storeSignal.signalIndex);

                QDeclarativeBoundSignal *bs = new QDeclarativeBoundSignal(target, signal, target);
                QDeclarativeExpression *expr = 
                    new QDeclarativeExpression(ctxt, context, primitives.at(instr.storeSignal.value));
                expr->setSourceLocation(comp->name, instr.line);
                static_cast<QDeclarativeExpressionPrivate *>(QObjectPrivate::get(expr))->name = datas.at(instr.storeSignal.name);
                bs->setExpression(expr);
            }
            break;

        case QDeclarativeInstruction::StoreImportedScript:
            {
                ctxt->addImportedScript(scripts.at(instr.storeScript.value));
            }
            break;

        case QDeclarativeInstruction::StoreScriptString: