1// Copyright (C) 2017 Ford Motor Company
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#include "qremoteobjectsource.h"
5#include "qremoteobjectsource_p.h"
6#include "qremoteobjectnode.h"
7#include "qremoteobjectdynamicreplica.h"
8
9#include "qconnectionfactories_p.h"
10#include "qremoteobjectsourceio_p.h"
11#include "qremoteobjectabstractitemmodeladapter_p.h"
12
13#include <QtCore/qmetaobject.h>
14#include <QtCore/qvarlengtharray.h>
15#include <QtCore/qabstractitemmodel.h>
16
17#include <algorithm>
18#include <iterator>
19
20QT_BEGIN_NAMESPACE
21
22using namespace QRemoteObjectPackets;
23using namespace QRemoteObjectStringLiterals;
24
25const int QRemoteObjectSourceBase::qobjectPropertyOffset = QObject::staticMetaObject.propertyCount();
26const int QRemoteObjectSourceBase::qobjectMethodOffset = QObject::staticMetaObject.methodCount();
27static const QByteArray s_classinfoRemoteobjectSignature(QCLASSINFO_REMOTEOBJECT_SIGNATURE);
28
29namespace QtPrivate {
30
31// The stringData, methodMatch and QMetaObjectPrivate methods are modified versions of the code
32// from qmetaobject_p.h/qmetaobject.cpp. The modifications are based on our custom need to match
33// a method name that comes from the .rep file.
34// The QMetaObjectPrivate struct should only have members appended to maintain binary compatibility,
35// so we should be fine with only the listed version with the fields we use.
36inline const QByteArray apiStringData(const QMetaObject *mo, int index)
37{
38 uint offset = mo->d.stringdata[2*index];
39 uint length = mo->d.stringdata[2*index + 1];
40 const char *string = reinterpret_cast<const char *>(mo->d.stringdata) + offset;
41 return QByteArray::fromRawData(data: string, size: length);
42}
43
44
45// From QMetaMethod in qmetaobject.h
46struct Data {
47 enum { Size = 6 };
48
49 uint name() const { return d[0]; }
50 uint argc() const { return d[1]; }
51 uint parameters() const { return d[2]; }
52 uint tag() const { return d[3]; }
53 uint flags() const { return d[4]; }
54 uint metaTypeOffset() const { return d[5]; }
55 bool operator==(const Data &other) const { return d == other.d; }
56
57 const uint *d;
58};
59
60inline bool apiMethodMatch(const QMetaObject *m, const Data &data, const QByteArray &name, int argc,
61 const int *types)
62{
63 if (data.argc() != uint(argc))
64 return false;
65 if (apiStringData(mo: m, index: data.name()) != name)
66 return false;
67 for (int i = 0; i < argc; ++i) {
68 auto mt = QMetaType(m->d.metaTypes[data.metaTypeOffset() + i + 1]);
69 if (mt != QMetaType(types[i]))
70 return false;
71 }
72 return true;
73}
74
75struct QMetaObjectPrivate
76{
77 // revision 7 is Qt 5.0 everything lower is not supported
78 // revision 8 is Qt 5.12: It adds the enum name to QMetaEnum
79 enum { OutputRevision = 8 }; // Used by moc, qmetaobjectbuilder and qdbus
80
81 int revision;
82 int className;
83 int classInfoCount, classInfoData;
84 int methodCount, methodData;
85 int propertyCount, propertyData;
86 int enumeratorCount, enumeratorData;
87 int constructorCount, constructorData;
88 int flags;
89 int signalCount;
90};
91
92inline Data fromRelativeMethodIndex(const QMetaObject *mobj, int index)
93{
94 const auto priv = reinterpret_cast<const QMetaObjectPrivate*>(mobj->d.data);
95 return { .d: mobj->d.data + priv->methodData + index * Data::Size };
96}
97
98int qtro_method_index_impl(const QMetaObject * staticMetaObj, const char *className,
99 const char *methodName, int *count, int const **types)
100{
101 int result = staticMetaObj->indexOfMethod(method: methodName);
102 if (result >= 0)
103 return result;
104 // We can have issues, specifically with enums, since the compiler can infer the class. Since
105 // indexOfMethod() is doing string comparisons for registered types, "MyEnum" and "MyClass::MyEnum"
106 // won't match.
107 // Below is similar to QMetaObject->indexOfMethod, but template magic has already matched parameter
108 // types, so we need to find a match for the API method name + parameters. Neither approach works
109 // 100%, as the below code doesn't match a parameter of type "size_t" (which the template match
110 // identifies as "ulong"). These subtleties can cause the below string comparison fails.
111 // There is no known case that would fail both methods.
112 // TODO: is there a way to make this a constexpr so a failure is detected at compile time?
113 int nameLength = strchr(s: methodName, c: '(') - methodName;
114 const auto name = QByteArray::fromRawData(data: methodName, size: nameLength);
115 for (const QMetaObject *m = staticMetaObj; m; m = m->d.superdata) {
116 const auto priv = reinterpret_cast<const QMetaObjectPrivate*>(m->d.data);
117 int i = (priv->methodCount - 1);
118 const int end = priv->signalCount;
119 for (; i >= end; --i) {
120 const Data data = fromRelativeMethodIndex(mobj: m, index: i);
121 if (apiMethodMatch(m, data, name, argc: *count, types: *types))
122 return i + m->methodOffset();
123 }
124 }
125 qWarning() << "No matching method for" << methodName << "in the provided metaclass" << className;
126 return -1;
127}
128
129} // namespace QtPrivate
130
131QByteArray QtPrivate::qtro_classinfo_signature(const QMetaObject *metaObject)
132{
133 if (!metaObject)
134 return QByteArray{};
135
136 for (int i = metaObject->classInfoOffset(); i < metaObject->classInfoCount(); ++i) {
137 auto ci = metaObject->classInfo(index: i);
138 if (s_classinfoRemoteobjectSignature == ci.name())
139 return ci.value();
140 }
141 return QByteArray{};
142}
143
144inline bool qtro_is_cloned_method(const QMetaObject *mobj, int index)
145{
146 int local_method_index = index - mobj->methodOffset();
147 if (local_method_index < 0 && mobj->superClass())
148 return qtro_is_cloned_method(mobj: mobj->superClass(), index);
149 const QtPrivate::Data data = QtPrivate::fromRelativeMethodIndex(mobj, index: local_method_index);
150 if (data.flags() & 0x20 /*MethodFlags::MethodCloned*/)
151 return true;
152 return false;
153}
154
155SourceApiMap::~SourceApiMap()
156 = default;
157
158QRemoteObjectSourceBase::QRemoteObjectSourceBase(QObject *obj, Private *d, const SourceApiMap *api,
159 QObject *adapter)
160 : QObject(obj),
161 m_object(obj),
162 m_adapter(adapter),
163 m_api(api),
164 d(d)
165{
166 if (!obj) {
167 qCWarning(QT_REMOTEOBJECT) << "QRemoteObjectSourceBase: Cannot replicate a NULL object" << m_api->name();
168 return;
169 }
170
171 setConnections();
172
173 const auto nChildren = api->m_models.size() + api->m_subclasses.size();
174 if (nChildren > 0) {
175 QList<int> roles;
176 const int numProperties = api->propertyCount();
177 int modelIndex = 0, subclassIndex = 0;
178 for (int i = 0; i < numProperties; ++i) {
179 if (api->isAdapterProperty(i))
180 continue;
181 const int index = api->sourcePropertyIndex(index: i);
182 const auto property = m_object->metaObject()->property(index);
183 const auto metaType = property.metaType();
184 if (metaType.flags().testFlag(flag: QMetaType::PointerToQObject)) {
185 auto propertyMeta = metaType.metaObject();
186 QObject *child = property.read(obj: m_object).value<QObject *>();
187 const QMetaObject *meta = child ? child->metaObject() : propertyMeta;
188 if (!meta)
189 continue;
190 if (meta->inherits(metaObject: &QAbstractItemModel::staticMetaObject)) {
191 const auto modelInfo = api->m_models.at(i: modelIndex++);
192 QAbstractItemModel *model = qobject_cast<QAbstractItemModel *>(object: child);
193 QAbstractItemAdapterSourceAPI<QAbstractItemModel, QAbstractItemModelSourceAdapter> *modelApi =
194 new QAbstractItemAdapterSourceAPI<QAbstractItemModel, QAbstractItemModelSourceAdapter>(modelInfo.name);
195 if (!model)
196 m_children.insert(key: i, value: new QRemoteObjectSource(nullptr, d, modelApi, nullptr, api->name()));
197 else {
198 roles.clear();
199 const auto knownRoles = model->roleNames();
200 for (auto role : modelInfo.roles.split(sep: '|')) {
201 if (role.isEmpty())
202 continue;
203 const int roleIndex = knownRoles.key(value: role, defaultKey: -1);
204 if (roleIndex == -1) {
205 qCWarning(QT_REMOTEOBJECT) << "Invalid role" << role << "for model" << model->metaObject()->className();
206 qCWarning(QT_REMOTEOBJECT) << " known roles:" << knownRoles;
207 } else
208 roles << roleIndex;
209 }
210 auto adapter = new QAbstractItemModelSourceAdapter(model, nullptr,
211 roles.isEmpty() ? knownRoles.keys().toVector() : roles);
212 m_children.insert(key: i, value: new QRemoteObjectSource(model, d, modelApi, adapter, api->name()));
213 }
214 } else {
215 const auto classApi = api->m_subclasses.at(i: subclassIndex++);
216 m_children.insert(key: i, value: new QRemoteObjectSource(child, d, classApi, nullptr, api->name()));
217 }
218 }
219 }
220 }
221}
222
223QRemoteObjectSource::QRemoteObjectSource(QObject *obj, Private *dd, const SourceApiMap *api, QObject *adapter, const QString &parentName)
224 : QRemoteObjectSourceBase(obj, dd, api, adapter)
225 , m_name(api->typeName() == QLatin1String("QAbstractItemModelAdapter") ? MODEL().arg(a: parentName + QLatin1String("::") + api->name()) :
226 CLASS().arg(a: parentName + QLatin1String("::") + api->name()))
227{
228 if (obj)
229 d->m_sourceIo->registerSource(source: this);
230}
231
232QRemoteObjectRootSource::QRemoteObjectRootSource(QObject *obj, const SourceApiMap *api,
233 QObject *adapter, QRemoteObjectSourceIo *sourceIo)
234 : QRemoteObjectSourceBase(obj, new Private(sourceIo, this), api, adapter)
235 , m_name(api->name())
236{
237 d->m_sourceIo->registerSource(source: this);
238}
239
240QRemoteObjectSourceBase::~QRemoteObjectSourceBase()
241{
242 delete m_api;
243}
244
245void QRemoteObjectSourceBase::setConnections()
246{
247 const QMetaObject *meta = m_object->metaObject();
248
249 const int index = meta->indexOfClassInfo(QCLASSINFO_REMOTEOBJECT_TYPE);
250 if (index != -1) { //We have an object created from repc or at least with QCLASSINFO defined
251 while (true) {
252 Q_ASSERT(meta->superClass()); //This recurses to QObject, which doesn't have QCLASSINFO_REMOTEOBJECT_TYPE
253 if (index != meta->superClass()->indexOfClassInfo(QCLASSINFO_REMOTEOBJECT_TYPE)) //At the point we don't find the same QCLASSINFO_REMOTEOBJECT_TYPE,
254 //we have the metaobject we should work from
255 break;
256 meta = meta->superClass();
257 }
258 }
259
260 for (int idx = 0; idx < m_api->signalCount(); ++idx) {
261 const int sourceIndex = m_api->sourceSignalIndex(index: idx);
262 const bool isAdapter = m_api->isAdapterSignal(idx);
263 const auto targetMeta = isAdapter ? m_adapter->metaObject() : meta;
264
265 // don't connect cloned signals, or we end up with multiple emissions
266 if (qtro_is_cloned_method(mobj: targetMeta, index: sourceIndex))
267 continue;
268 // This basically connects the parent Signals (note, all dynamic properties have onChange
269 //notifications, thus signals) to us. Normally each Signal is mapped to a unique index,
270 //but since we are forwarding them all, we keep the offset constant.
271 //
272 //We know no one will inherit from this class, so no need to worry about indices from
273 //derived classes.
274 const auto target = isAdapter ? m_adapter : m_object;
275 if (!QMetaObject::connect(sender: target, signal_index: sourceIndex, receiver: this, method_index: QRemoteObjectSource::qobjectMethodOffset+idx, type: Qt::DirectConnection, types: nullptr)) {
276 qCWarning(QT_REMOTEOBJECT) << "QRemoteObjectSourceBase: QMetaObject::connect returned false. Unable to connect.";
277 return;
278 }
279
280 qCDebug(QT_REMOTEOBJECT) << "Connection made" << idx << sourceIndex
281 << targetMeta->method(index: sourceIndex).name();
282 }
283}
284
285void QRemoteObjectSourceBase::resetObject(QObject *newObject)
286{
287 if (m_object)
288 m_object->disconnect(receiver: this);
289 if (m_adapter) {
290 m_adapter->disconnect(receiver: this);
291 delete m_adapter;
292 m_adapter = nullptr;
293 }
294 // We need some dynamic replica specific code here, in case an object had null sub-classes that
295 // have been replaced with real objects. In this case, the ApiMap could be wrong and need updating.
296 if (newObject && qobject_cast<QRemoteObjectDynamicReplica *>(object: newObject) && m_api->isDynamic()) {
297 auto api = static_cast<const DynamicApiMap*>(m_api);
298 if (api->m_properties[0] == 0) { // 0 is an index into QObject itself, so this isn't a valid QtRO index
299 const auto rep = qobject_cast<QRemoteObjectDynamicReplica *>(object: newObject);
300 auto tmp = m_api;
301 m_api = new DynamicApiMap(newObject, rep->metaObject(), api->m_name, QLatin1String(rep->metaObject()->className()));
302 qCDebug(QT_REMOTEOBJECT) << " Reset m_api for" << api->m_name << "using new metaObject:" << rep->metaObject()->className();
303 delete tmp;
304 }
305 }
306
307 m_object = newObject;
308 auto model = qobject_cast<QAbstractItemModel *>(object: newObject);
309 if (model) {
310 d->m_sourceIo->registerSource(source: this);
311 m_adapter = new QAbstractItemModelSourceAdapter(model, nullptr, model->roleNames().keys().toVector());
312 }
313
314 setParent(newObject);
315 if (newObject)
316 setConnections();
317
318 const auto nChildren = m_api->m_models.size() + m_api->m_subclasses.size();
319 if (nChildren == 0)
320 return;
321
322 if (!newObject) {
323 for (auto child : m_children)
324 child->resetObject(newObject: nullptr);
325 return;
326 }
327
328 for (int i : m_children.keys()) {
329 const int index = m_api->sourcePropertyIndex(index: i);
330 const auto property = m_object->metaObject()->property(index);
331 QObject *child = property.read(obj: m_object).value<QObject *>();
332 m_children[i]->resetObject(newObject: child);
333 }
334}
335
336QRemoteObjectSource::~QRemoteObjectSource()
337{
338 for (auto it : m_children) {
339 // We used QPointers for m_children because we don't control the lifetime of child QObjects
340 // Since the this/source QObject's parent is the referenced QObject, it could have already
341 // been deleted
342 delete it;
343 }
344}
345
346QRemoteObjectRootSource::~QRemoteObjectRootSource()
347{
348 for (auto it : m_children) {
349 // We used QPointers for m_children because we don't control the lifetime of child QObjects
350 // Since the this/source QObject's parent is the referenced QObject, it could have already
351 // been deleted
352 delete it;
353 }
354 d->m_sourceIo->unregisterSource(source: this);
355 // removeListener tries to modify d->m_listeners, this is O(N²),
356 // so clear d->m_listeners prior to calling unregister (consume loop).
357 // We can do this, because we don't care about the return value of removeListener() here.
358 for (QtROIoDeviceBase *io : std::exchange(obj&: d->m_listeners, new_val: {})) {
359 removeListener(io, shouldSendRemove: true);
360 }
361 delete d;
362}
363
364QVariantList* QRemoteObjectSourceBase::marshalArgs(int index, void **a)
365{
366 QVariantList &list = m_marshalledArgs;
367 int N = m_api->signalParameterCount(index);
368 if (N == 1 && QMetaType(m_api->signalParameterType(sigIndex: index, paramIndex: 0)).flags().testFlag(flag: QMetaType::PointerToQObject))
369 N = 0; // Don't try to send pointers, the will be handle by QRO_
370 if (list.size() < N)
371 list.reserve(asize: N);
372 const int minFill = std::min(a: int(list.size()), b: N);
373 for (int i = 0; i < minFill; ++i) {
374 const int type = m_api->signalParameterType(sigIndex: index, paramIndex: i);
375 if (type == QMetaType::QVariant)
376 list[i] = *reinterpret_cast<QVariant *>(a[i + 1]);
377 else
378 list[i] = QVariant(QMetaType(type), a[i + 1]);
379 }
380 for (int i = int(list.size()); i < N; ++i) {
381 const int type = m_api->signalParameterType(sigIndex: index, paramIndex: i);
382 if (type == QMetaType::QVariant)
383 list << *reinterpret_cast<QVariant *>(a[i + 1]);
384 else
385 list << QVariant(QMetaType(type), a[i + 1]);
386 }
387 for (int i = N; i < list.size(); ++i)
388 list.removeLast();
389 return &m_marshalledArgs;
390}
391
392bool QRemoteObjectSourceBase::invoke(QMetaObject::Call c, int index, const QVariantList &args, QVariant* returnValue)
393{
394 int status = -1;
395 int flags = 0;
396 bool forAdapter = (c == QMetaObject::InvokeMetaMethod ? m_api->isAdapterMethod(index) : m_api->isAdapterProperty(index));
397 int resolvedIndex = (c == QMetaObject::InvokeMetaMethod ? m_api->sourceMethodIndex(index) : m_api->sourcePropertyIndex(index));
398 if (resolvedIndex < 0)
399 return false;
400 QVarLengthArray<void*, 10> param(args.size() + 1);
401
402 if (c == QMetaObject::InvokeMetaMethod) {
403 QMetaMethod method;
404 if (!forAdapter)
405 method = parent()->metaObject()->method(index: resolvedIndex);
406
407 if (returnValue) {
408 if (!forAdapter && method.isValid() && method.returnType() == QMetaType::QVariant)
409 param[0] = const_cast<void*>(reinterpret_cast<const void*>(returnValue));
410 else
411 param[0] = returnValue->data();
412 } else {
413 param[0] = nullptr;
414 }
415
416 auto argument = [&](int i) -> void * {
417 if ((forAdapter && m_api->methodParameterType(methodIndex: index, paramIndex: i) == QMetaType::QVariant) ||
418 (method.isValid() && method.parameterType(index: i) == QMetaType::QVariant)) {
419 return const_cast<void*>(reinterpret_cast<const void*>(&args.at(i)));
420 }
421 return const_cast<void*>(args.at(i).data());
422 };
423
424 for (int i = 0; i < args.size(); ++i) {
425 param[i + 1] = argument(i);
426 }
427 } else if (c == QMetaObject::WriteProperty || c == QMetaObject::ReadProperty) {
428 bool isQVariant = !forAdapter && parent()->metaObject()->property(index: resolvedIndex).userType() == QMetaType::QVariant;
429 for (int i = 0; i < args.size(); ++i) {
430 if (isQVariant)
431 param[i] = const_cast<void*>(reinterpret_cast<const void*>(&args.at(i)));
432 else
433 param[i] = const_cast<void*>(args.at(i).data());
434 }
435 if (c == QMetaObject::WriteProperty) {
436 Q_ASSERT(param.size() == 2); // for return-value and setter value
437 // check QMetaProperty::write for an explanation of these
438 param.append(t: &status);
439 param.append(t: &flags);
440 }
441 } else {
442 // Better safe than sorry
443 return false;
444 }
445 int r = -1;
446 if (forAdapter)
447 r = m_adapter->qt_metacall(c, resolvedIndex, param.data());
448 else
449 r = parent()->qt_metacall(c, resolvedIndex, param.data());
450 return r == -1 && status == -1;
451}
452
453void QRemoteObjectSourceBase::handleMetaCall(int index, QMetaObject::Call call, void **a)
454{
455 if (d->m_listeners.empty())
456 return;
457
458 int propertyIndex = m_api->propertyIndexFromSignal(index);
459 if (propertyIndex >= 0) {
460 const int internalIndex = m_api->propertyRawIndexFromSignal(index);
461 const auto target = m_api->isAdapterProperty(internalIndex) ? m_adapter : m_object;
462 const QMetaProperty mp = target->metaObject()->property(index: propertyIndex);
463 qCDebug(QT_REMOTEOBJECT) << "Sending Invoke Property" << (m_api->isAdapterSignal(internalIndex) ? "via adapter" : "") << internalIndex << propertyIndex << mp.name() << mp.read(obj: target);
464
465 d->codec->serializePropertyChangePacket(source: this, signalIndex: index);
466 propertyIndex = internalIndex;
467 }
468
469 qCDebug(QT_REMOTEOBJECT) << "# Listeners" << d->m_listeners.size();
470 qCDebug(QT_REMOTEOBJECT) << "Invoke args:" << m_object
471 << (call == 0 ? QLatin1String("InvokeMetaMethod") : QStringLiteral("Non-invoked call: %d").arg(a: call))
472 << m_api->signalSignature(index) << *marshalArgs(index, a);
473
474 d->codec->serializeInvokePacket(name: name(), call, index, args: *marshalArgs(index, a), serialId: -1, propertyIndex);
475
476 d->codec->send(connections: d->m_listeners);
477}
478
479void QRemoteObjectRootSource::addListener(QtROIoDeviceBase *io, bool dynamic)
480{
481 d->m_listeners.append(t: io);
482 d->isDynamic = d->isDynamic || dynamic;
483
484 if (dynamic) {
485 d->sentTypes.clear();
486 d->codec->serializeInitDynamicPacket(this);
487 d->codec->send(connection: io);
488 } else {
489 d->codec->serializeInitPacket(this);
490 d->codec->send(connection: io);
491 }
492}
493
494int QRemoteObjectRootSource::removeListener(QtROIoDeviceBase *io, bool shouldSendRemove)
495{
496 d->m_listeners.removeAll(t: io);
497 if (shouldSendRemove)
498 {
499 d->codec->serializeRemoveObjectPacket(name: m_api->name());
500 d->codec->send(connection: io);
501 }
502 return int(d->m_listeners.size());
503}
504
505int QRemoteObjectSourceBase::qt_metacall(QMetaObject::Call call, int methodId, void **a)
506{
507 methodId = QObject::qt_metacall(call, methodId, a);
508 if (methodId < 0)
509 return methodId;
510
511 if (call == QMetaObject::InvokeMetaMethod)
512 handleMetaCall(index: methodId, call, a);
513
514 return -1;
515}
516
517DynamicApiMap::DynamicApiMap(QObject *object, const QMetaObject *metaObject, const QString &name, const QString &typeName)
518 : m_name(name),
519 m_typeName(typeName),
520 m_metaObject(metaObject),
521 m_cachedMetamethodIndex(-1)
522{
523 m_enumOffset = metaObject->enumeratorOffset();
524 m_enumCount = metaObject->enumeratorCount() - m_enumOffset;
525
526 const int propCount = metaObject->propertyCount();
527 const int propOffset = metaObject->propertyOffset();
528 m_properties.reserve(asize: propCount-propOffset);
529 QSet<int> invalidSignals;
530 for (int i = propOffset; i < propCount; ++i) {
531 const QMetaProperty property = metaObject->property(index: i);
532 const auto metaType = property.metaType();
533 if (metaType.flags().testFlag(flag: QMetaType::PointerToQObject)) {
534 auto propertyMeta = metaType.metaObject();
535 QObject *child = property.read(obj: object).value<QObject *>();
536 const QMetaObject *meta = child ? child->metaObject() : propertyMeta;
537 if (!meta) {
538 const int notifyIndex = metaObject->property(index: i).notifySignalIndex();
539 if (notifyIndex != -1)
540 invalidSignals << notifyIndex;
541 continue;
542 }
543 if (meta->inherits(metaObject: &QAbstractItemModel::staticMetaObject)) {
544 const QByteArray name = QByteArray::fromRawData(data: property.name(),
545 size: qsizetype(qstrlen(str: property.name())));
546 const QByteArray infoName = name.toUpper() + QByteArrayLiteral("_ROLES");
547 const int infoIndex = metaObject->indexOfClassInfo(name: infoName.constData());
548 QByteArray roleInfo;
549 if (infoIndex >= 0) {
550 auto ci = metaObject->classInfo(index: infoIndex);
551 roleInfo = QByteArray::fromRawData(data: ci.value(), size: qsizetype(qstrlen(str: ci.value())));
552 }
553 m_models << ModelInfo({.ptr: qobject_cast<QAbstractItemModel *>(object: child),
554 .name: QString::fromLatin1(ba: property.name()),
555 .roles: roleInfo});
556 } else {
557 QString typeName = QtRemoteObjects::getTypeNameAndMetaobjectFromClassInfo(meta);
558 if (typeName.isNull()) {
559 typeName = QString::fromLatin1(ba: meta->className());
560 if (typeName.contains(s: QLatin1String("QQuick")))
561 typeName.remove(s: QLatin1String("QQuick"));
562 else if (int index = typeName.indexOf(s: QLatin1String("_QMLTYPE_")))
563 typeName.truncate(pos: index);
564 // TODO better way to ensure we have consistent typenames between source/replicas?
565 else if (typeName.endsWith(s: QLatin1String("Source")))
566 typeName.chop(n: 6);
567 }
568
569 m_subclasses << new DynamicApiMap(child, meta, QString::fromLatin1(ba: property.name()), typeName);
570 }
571 }
572 m_properties << i;
573 const int notifyIndex = metaObject->property(index: i).notifySignalIndex();
574 if (notifyIndex != -1) {
575 m_signals << notifyIndex;
576 m_propertyAssociatedWithSignal.append(t: i-propOffset);
577 //The starting values of _signals will be the notify signals
578 //So if we are processing _signal with index i, api->sourcePropertyIndex(_propertyAssociatedWithSignal.at(i))
579 //will be the property that changed. This is only valid if i < _propertyAssociatedWithSignal.size().
580 }
581 }
582 const int methodCount = metaObject->methodCount();
583 const int methodOffset = metaObject->methodOffset();
584 for (int i = methodOffset; i < methodCount; ++i) {
585 const QMetaMethod mm = metaObject->method(index: i);
586 const QMetaMethod::MethodType m = mm.methodType();
587 if (m == QMetaMethod::Signal) {
588 if (m_signals.indexOf(t: i) >= 0) // Already added as a property notifier
589 continue;
590 if (invalidSignals.contains(value: i)) // QObject with no metatype
591 continue;
592 m_signals << i;
593 } else if (m == QMetaMethod::Slot || m == QMetaMethod::Method)
594 m_methods << i;
595 }
596
597 m_objectSignature = QtPrivate::qtro_classinfo_signature(metaObject);
598}
599
600QByteArrayList DynamicApiMap::signalParameterNames(int index) const
601{
602 const int objectIndex = m_signals.at(i: index);
603 checkCache(objectIndex);
604 return m_cachedMetamethod.parameterNames();
605}
606
607int DynamicApiMap::parameterCount(int objectIndex) const
608{
609 checkCache(objectIndex);
610 return m_cachedMetamethod.parameterCount();
611}
612
613int DynamicApiMap::parameterType(int objectIndex, int paramIndex) const
614{
615 checkCache(objectIndex);
616 return m_cachedMetamethod.parameterType(index: paramIndex);
617}
618
619const QByteArray DynamicApiMap::signature(int objectIndex) const
620{
621 checkCache(objectIndex);
622 return m_cachedMetamethod.methodSignature();
623}
624
625QMetaMethod::MethodType DynamicApiMap::methodType(int index) const
626{
627 const int objectIndex = m_methods.at(i: index);
628 checkCache(objectIndex);
629 return m_cachedMetamethod.methodType();
630}
631
632const QByteArray DynamicApiMap::typeName(int index) const
633{
634 const int objectIndex = m_methods.at(i: index);
635 checkCache(objectIndex);
636 return m_cachedMetamethod.typeName();
637}
638
639QByteArrayList DynamicApiMap::methodParameterNames(int index) const
640{
641 const int objectIndex = m_methods.at(i: index);
642 checkCache(objectIndex);
643 return m_cachedMetamethod.parameterNames();
644}
645
646QRemoteObjectSourceBase::Private::Private(QRemoteObjectSourceIo *io, QRemoteObjectRootSource *root)
647 : m_sourceIo(io), codec(io->m_codec.data()), isDynamic(false), root(root)
648{
649}
650
651QT_END_NAMESPACE
652

source code of qtremoteobjects/src/remoteobjects/qremoteobjectsource.cpp