A few fixes for deeply nested objects

This is still broken according to the test test_objects.

demo/rust/Cargo.toml

@@ -4,7 +4,7 @@ version = "0.1.0"
 
 [dependencies]
 libc = "*"
-sysinfo = "0.3"
+sysinfo = "0.3.16"
 
 [lib]
 name = "rust"

demo/src/Fibonacci.cpp

@@ -69,6 +69,7 @@ extern "C" {
     void fibonacci_input_set(Fibonacci::Private*, uint);
     quint64 fibonacci_result_get(const Fibonacci::Private*);
 };
+
 extern "C" {
     quint64 fibonacci_list_data_result(const FibonacciList::Private*, int);
     void fibonacci_list_sort(FibonacciList::Private*, unsigned char column, Qt::SortOrder order = Qt::AscendingOrder);
@@ -168,16 +169,21 @@ extern "C" {
         void (*)(FibonacciList*));
     void fibonacci_list_free(FibonacciList::Private*);
 };
+
 Fibonacci::Fibonacci(bool /*owned*/, QObject *parent):
     QObject(parent),
     m_d(0),
-    m_ownsPrivate(false) {}
+    m_ownsPrivate(false)
+{
+}
+
 Fibonacci::Fibonacci(QObject *parent):
     QObject(parent),
     m_d(fibonacci_new(this,
         fibonacciInputChanged,
         fibonacciResultChanged)),
-    m_ownsPrivate(true) {
+    m_ownsPrivate(true)
+{
 }
 
 Fibonacci::~Fibonacci() {
@@ -199,7 +205,10 @@ quint64 Fibonacci::result() const
 FibonacciList::FibonacciList(bool /*owned*/, QObject *parent):
     QAbstractItemModel(parent),
     m_d(0),
-    m_ownsPrivate(false) {}
+    m_ownsPrivate(false)
+{
+}
+
 FibonacciList::FibonacciList(QObject *parent):
     QAbstractItemModel(parent),
     m_d(fibonacci_list_new(this,
@@ -225,7 +234,8 @@ FibonacciList::FibonacciList(QObject *parent):
             o->endRemoveRows();
         }
 )),
-    m_ownsPrivate(true) {
+    m_ownsPrivate(true)
+{
     connect(this, &FibonacciList::newDataReady, this, [this](const QModelIndex& i) {
         fetchMore(i);
     }, Qt::QueuedConnection);

demo/src/Fibonacci.h

@@ -5,6 +5,9 @@
 #include <QObject>
 #include <QAbstractItemModel>
 
+class Fibonacci;
+class FibonacciList;
+
 class Fibonacci : public QObject
 {
     Q_OBJECT

demo/src/Processes.cpp

@@ -220,10 +220,14 @@ extern "C" {
         void (*)(Processes*));
     void processes_free(Processes::Private*);
 };
+
 Processes::Processes(bool /*owned*/, QObject *parent):
     QAbstractItemModel(parent),
     m_d(0),
-    m_ownsPrivate(false) {}
+    m_ownsPrivate(false)
+{
+}
+
 Processes::Processes(QObject *parent):
     QAbstractItemModel(parent),
     m_d(processes_new(this,
@@ -264,7 +268,8 @@ Processes::Processes(QObject *parent):
             o->endRemoveRows();
         }
 )),
-    m_ownsPrivate(true) {
+    m_ownsPrivate(true)
+{
     connect(this, &Processes::newDataReady, this, [this](const QModelIndex& i) {
         fetchMore(i);
     }, Qt::QueuedConnection);

demo/src/Processes.h

@@ -5,6 +5,8 @@
 #include <QObject>
 #include <QAbstractItemModel>
 
+class Processes;
+
 class Processes : public QAbstractItemModel
 {
     Q_OBJECT

demo/src/TimeSeries.cpp

@@ -189,10 +189,14 @@ extern "C" {
         void (*)(TimeSeries*));
     void time_series_free(TimeSeries::Private*);
 };
+
 TimeSeries::TimeSeries(bool /*owned*/, QObject *parent):
     QAbstractItemModel(parent),
     m_d(0),
-    m_ownsPrivate(false) {}
+    m_ownsPrivate(false)
+{
+}
+
 TimeSeries::TimeSeries(QObject *parent):
     QAbstractItemModel(parent),
     m_d(time_series_new(this,
@@ -218,7 +222,8 @@ TimeSeries::TimeSeries(QObject *parent):
             o->endRemoveRows();
         }
 )),
-    m_ownsPrivate(true) {
+    m_ownsPrivate(true)
+{
     connect(this, &TimeSeries::newDataReady, this, [this](const QModelIndex& i) {
         fetchMore(i);
     }, Qt::QueuedConnection);

demo/src/TimeSeries.h

@@ -5,6 +5,8 @@
 #include <QObject>
 #include <QAbstractItemModel>
 
+class TimeSeries;
+
 class TimeSeries : public QAbstractItemModel
 {
     Q_OBJECT

demo/src/Tree.cpp

@@ -240,10 +240,14 @@ extern "C" {
     void tree_path_set(Tree::Private*, qstring_t);
     void tree_path_set_none(Tree::Private*);
 };
+
 Tree::Tree(bool /*owned*/, QObject *parent):
     QAbstractItemModel(parent),
     m_d(0),
-    m_ownsPrivate(false) {}
+    m_ownsPrivate(false)
+{
+}
+
 Tree::Tree(QObject *parent):
     QAbstractItemModel(parent),
     m_d(tree_new(this,
@@ -285,7 +289,8 @@ Tree::Tree(QObject *parent):
             o->endRemoveRows();
         }
 )),
-    m_ownsPrivate(true) {
+    m_ownsPrivate(true)
+{
     connect(this, &Tree::newDataReady, this, [this](const QModelIndex& i) {
         fetchMore(i);
     }, Qt::QueuedConnection);

demo/src/Tree.h

@@ -5,6 +5,8 @@
 #include <QObject>
 #include <QAbstractItemModel>
 
+class Tree;
+
 class Tree : public QAbstractItemModel
 {
     Q_OBJECT

src/cpp.cpp

@@ -325,7 +325,7 @@ class %1 : public %3
     Q_OBJEC%2
 )").arg(o.name, "T", baseType(o));
     for (auto object: conf.objects) {
-        if (object.containsObject()) {
+        if (object.containsObject() && o.name != object.name) {
             h << "    friend class " << object.name << ";\n";
         }
     }
@@ -414,12 +414,13 @@ QString changedF(const Object& o, const Property& p) {
     return lowerInitial(o.name) + upperInitial(p.name) + "Changed";
 }
 
-void constructorArgs(QTextStream& cpp, const Object& o, const Configuration& conf) {
+void constructorArgs(QTextStream& cpp, const QString& prefix, const Object& o, const Configuration& conf) {
     const QString lcname(snakeCase(o.name));
     for (const Property& p: o.properties) {
         if (p.type.type == BindingType::Object) {
-            cpp << ", m_" << p.name;
-            constructorArgs(cpp, conf.findObject(p.type.name), conf);
+            cpp << ", " << prefix << "m_" << p.name;
+            constructorArgs(cpp, "m_" + p.name + "->",
+                    conf.findObject(p.type.name), conf);
         } else {
             cpp << ",\n        " << changedF(o, p);
         }
@@ -521,6 +522,40 @@ void writeObjectCDecl(QTextStream& cpp, const Object& o, const Configuration& co
     }
 }
 
+void initializeMembersEmpty(QTextStream& cpp, const Object& o, const Configuration& conf)
+{
+    for (const Property& p: o.properties) {
+        if (p.type.type == BindingType::Object) {
+            initializeMembersEmpty(cpp, conf.findObject(p.type.name), conf);
+            cpp << QString("    %1m_%2(new %3(false, this)),\n")
+                   .arg(p.name, p.type.name);
+        }
+    }
+}
+
+
+void initializeMembersZero(QTextStream& cpp, const Object& o, const Configuration& conf)
+{
+    for (const Property& p: o.properties) {
+        if (p.type.type == BindingType::Object) {
+            cpp << QString("    m_%1(new %2(false, this)),\n")
+                   .arg(p.name, p.type.name);
+        }
+    }
+}
+
+void initializeMembers(QTextStream& cpp, const QString& prefix, const Object& o, const Configuration& conf)
+{
+    for (const Property& p: o.properties) {
+        if (p.type.type == BindingType::Object) {
+            initializeMembers(cpp, "m_" + p.name + "->",
+                    conf.findObject(p.type.name), conf);
+            cpp << QString("    %1m_%2->m_d = %3_%2_get(%1m_d);\n")
+                   .arg(prefix, p.name, snakeCase(o.name));
+        }
+    }
+}
+
 void writeCppObject(QTextStream& cpp, const Object& o, const Configuration& conf) {
     const QString lcname(snakeCase(o.name));
     cpp << QString("%1::%1(bool /*owned*/, QObject *parent):\n    %2(parent),")
@@ -531,24 +566,14 @@ void writeCppObject(QTextStream& cpp, const Object& o, const Configuration& conf
                    .arg(p.name, p.type.name);
         }
     }
-    cpp << "    m_d(0),\n    m_ownsPrivate(false) {}\n";
+    cpp << "    m_d(0),\n    m_ownsPrivate(false)\n{\n}\n\n";
     cpp << QString("%1::%1(QObject *parent):\n    %2(parent),")
             .arg(o.name, baseType(o)) << endl;
-    for (const Property& p: o.properties) {
-        if (p.type.type == BindingType::Object) {
-            cpp << QString("    m_%1(new %2(false, this)),\n")
-                   .arg(p.name, p.type.name);
-        }
-    }
+    initializeMembersZero(cpp, o, conf);
     cpp << QString("    m_d(%1_new(this").arg(lcname);
-    constructorArgs(cpp, o, conf);
-    cpp << ")),\n    m_ownsPrivate(true) {\n";
-    for (const Property& p: o.properties) {
-        if (p.type.type == BindingType::Object) {
-            cpp << QString("    m_%1->m_d = %2_%1_get(this->m_d);\n")
-                   .arg(p.name, snakeCase(o.name));
-        }
-    }
+    constructorArgs(cpp, "", o, conf);
+    cpp << ")),\n    m_ownsPrivate(true)\n{\n";
+    initializeMembers(cpp, "", o, conf);
     if (o.type != ObjectType::Object) {
         cpp << QString(R"(    connect(this, &%1::newDataReady, this, [this](const QModelIndex& i) {
         fetchMore(i);
@@ -612,12 +637,11 @@ void writeHeader(const Configuration& conf) {
 
 #include <QObject>
 #include <QAbstractItemModel>
+
 )").arg(guard);
 
     for (auto object: conf.objects) {
-        if (object.containsObject()) {
-            h << "class " << object.name << ";\n";
-        }
+        h << "class " << object.name << ";\n";
     }
     for (auto object: conf.objects) {
         writeHeaderObject(h, object, conf);
@@ -706,7 +730,7 @@ void set_qbytearray(QByteArray* v, qbytearray_t* val) {
 
         cpp << "extern \"C\" {\n";
         writeObjectCDecl(cpp, object, conf);
-        cpp << "};" << endl;
+        cpp << "};\n" << endl;
     }
 
     for (auto object: conf.objects) {

src/parseJson.cpp

@@ -204,17 +204,19 @@ parseConfiguration(const QString& path) {
     c.hFile = QFileInfo(c.cppFile.dir(), c.cppFile.completeBaseName() + ".h");
     const QJsonObject& object = o.value("objects").toObject();
     for (const QString& key: object.keys()) {
-        Object o = parseObject(key, object[key].toObject());
-        c.objects.append(o);
         bindingTypeProperties().append({
             .type = BindingType::Object,
-            .name = o.name,
-            .cppSetType = o.name,
-            .cSetType = o.name,
-            .rustType = o.name,
+            .name = key,
+            .cppSetType = key,
+            .cSetType = key,
+            .rustType = key,
             .rustTypeInit = "",
         });
     }
+    for (const QString& key: object.keys()) {
+        Object o = parseObject(key, object[key].toObject());
+        c.objects.append(o);
+    }
     const QJsonObject rust = o.value("rust").toObject();
     c.rustdir = QDir(base.filePath(rust.value("dir").toString()));
     c.interfaceModule = rust.value("interfaceModule").toString();

src/rust.cpp

@@ -767,7 +767,7 @@ void writeRustImplementationObject(QTextStream& r, const Object& o) {
             }
         }
     }
-    r << "}\n";
+    r << "}\n\n";
 }
 
 void writeRustImplementation(const Configuration& conf) {

tests/rust_list/src/implementation.rs

@@ -36,3 +36,4 @@ impl PersonsTrait for Persons {
         true
     }
 }
+

tests/rust_object/src/implementation.rs

@@ -26,3 +26,4 @@ impl PersonTrait for Person {
         self.emit.user_name_changed();
     }
     }
+

tests/rust_object_types/src/implementation.rs

@@ -89,3 +89,4 @@ impl ObjectTrait for Object {
         self.emit.uinteger_changed();
     }
     }
+

tests/rust_objects/src/implementation.rs

@@ -3,6 +3,29 @@
 #![allow(dead_code)]
 use interface::*;
 
+pub struct Group {
+    emit: GroupEmitter,
+    person: Person,
+}
+
+impl GroupTrait for Group {
+    fn create(emit: GroupEmitter, person: Person) -> Group {
+        Group {
+            emit: emit,
+            person: person,
+        }
+    }
+    fn emit(&self) -> &GroupEmitter {
+        &self.emit
+    }
+    fn get_person(&self) -> &Person {
+        &self.person
+    }
+    fn get_mut_person(&mut self) -> &mut Person {
+        &mut self.person
+    }
+}
+
 pub struct InnerObject {
     emit: InnerObjectEmitter,
     description: String,
@@ -26,6 +49,7 @@ impl InnerObjectTrait for InnerObject {
         self.emit.description_changed();
     }
     }
+
 pub struct Person {
     emit: PersonEmitter,
     object: InnerObject,
@@ -48,3 +72,4 @@ impl PersonTrait for Person {
         &mut self.object
     }
 }
+

tests/rust_objects/src/interface.rs

@@ -38,6 +38,61 @@ impl<'a> From<&'a String> for QString {
     }
 }
 
+pub struct GroupQObject {}
+
+#[derive (Clone)]
+pub struct GroupEmitter {
+    qobject: Arc<Mutex<*const GroupQObject>>,
+}
+
+unsafe impl Send for GroupEmitter {}
+
+impl GroupEmitter {
+    fn clear(&self) {
+        *self.qobject.lock().unwrap() = null();
+    }
+}
+
+pub trait GroupTrait {
+    fn create(emit: GroupEmitter,
+        person: Person) -> Self;
+    fn emit(&self) -> &GroupEmitter;
+    fn get_person(&self) -> &Person;
+    fn get_mut_person(&mut self) -> &mut Person;
+}
+
+#[no_mangle]
+pub extern "C" fn group_new(group: *mut GroupQObject, person: *mut PersonQObject, object: *mut InnerObjectQObject,
+        description_changed: fn(*const InnerObjectQObject))
+        -> *mut Group {
+    let object_emit = InnerObjectEmitter {
+        qobject: Arc::new(Mutex::new(object)),
+        description_changed: description_changed,
+    };
+    let d_object = InnerObject::create(object_emit);
+    let person_emit = PersonEmitter {
+        qobject: Arc::new(Mutex::new(person)),
+    };
+    let d_person = Person::create(person_emit,
+        d_object);
+    let group_emit = GroupEmitter {
+        qobject: Arc::new(Mutex::new(group)),
+    };
+    let d_group = Group::create(group_emit,
+        d_person);
+    Box::into_raw(Box::new(d_group))
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn group_free(ptr: *mut Group) {
+    Box::from_raw(ptr).emit().clear();
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn group_person_get(ptr: *mut Group) -> *mut Person {
+    (&mut *ptr).get_mut_person()
+}
+
 pub struct InnerObjectQObject {}
 
 #[derive (Clone)]

tests/rust_tree/src/implementation.rs

@@ -45,3 +45,4 @@ impl PersonsTrait for Persons {
         true
     }
 }
+

tests/test_list_rust.cpp

@@ -164,10 +164,14 @@ extern "C" {
         void (*)(Persons*));
     void persons_free(Persons::Private*);
 };
+
 Persons::Persons(bool /*owned*/, QObject *parent):
     QAbstractItemModel(parent),
     m_d(0),
-    m_ownsPrivate(false) {}
+    m_ownsPrivate(false)
+{
+}
+
 Persons::Persons(QObject *parent):
     QAbstractItemModel(parent),
     m_d(persons_new(this,
@@ -193,7 +197,8 @@ Persons::Persons(QObject *parent):
             o->endRemoveRows();
         }
 )),
-    m_ownsPrivate(true) {
+    m_ownsPrivate(true)
+{
     connect(this, &Persons::newDataReady, this, [this](const QModelIndex& i) {
         fetchMore(i);
     }, Qt::QueuedConnection);

tests/test_list_rust.h

@@ -5,6 +5,8 @@
 #include <QObject>
 #include <QAbstractItemModel>
 
+class Persons;
+
 class Persons : public QAbstractItemModel
 {
     Q_OBJECT

tests/test_object_rust.cpp

@@ -64,15 +64,20 @@ extern "C" {
     void person_user_name_get(const Person::Private*, QString*, qstring_set);
     void person_user_name_set(Person::Private*, qstring_t);
 };
+
 Person::Person(bool /*owned*/, QObject *parent):
     QObject(parent),
     m_d(0),
-    m_ownsPrivate(false) {}
+    m_ownsPrivate(false)
+{
+}
+
 Person::Person(QObject *parent):
     QObject(parent),
     m_d(person_new(this,
         personUserNameChanged)),
-    m_ownsPrivate(true) {
+    m_ownsPrivate(true)
+{
 }
 
 Person::~Person() {

tests/test_object_rust.h

@@ -5,6 +5,8 @@
 #include <QObject>
 #include <QAbstractItemModel>
 
+class Person;
+
 class Person : public QObject
 {
     Q_OBJECT

tests/test_object_types_rust.cpp

@@ -108,10 +108,14 @@ extern "C" {
     quint32 object_uinteger_get(const Object::Private*);
     void object_uinteger_set(Object::Private*, uint);
 };
+
 Object::Object(bool /*owned*/, QObject *parent):
     QObject(parent),
     m_d(0),
-    m_ownsPrivate(false) {}
+    m_ownsPrivate(false)
+{
+}
+
 Object::Object(QObject *parent):
     QObject(parent),
     m_d(object_new(this,
@@ -123,7 +127,8 @@ Object::Object(QObject *parent):
         objectStringChanged,
         objectU64Changed,
         objectUintegerChanged)),
-    m_ownsPrivate(true) {
+    m_ownsPrivate(true)
+{
 }
 
 Object::~Object() {

tests/test_object_types_rust.h

@@ -5,6 +5,8 @@
 #include <QObject>
 #include <QAbstractItemModel>
 
+class Object;
+
 class Object : public QObject
 {
     Q_OBJECT

tests/test_objects.cpp

@@ -6,23 +6,26 @@ class TestRustObjects : public QObject
 {
     Q_OBJECT
 private slots:
-    void testConstructor();
-    void testStringGetter();
-    void testStringSetter();
+    void testOneLevelConstructor();
+    void testOneLevelStringGetter();
+    void testOneLevelStringSetter();
+    void testTwoLevelsConstructor();
+    void testTwoLevelsStringGetter();
+    void testTwoLevelsStringSetter();
 };
 
-void TestRustObjects::testConstructor()
+void TestRustObjects::testOneLevelConstructor()
 {
     Person person;
 }
 
-void TestRustObjects::testStringGetter()
+void TestRustObjects::testOneLevelStringGetter()
 {
     Person person;
     person.object()->setDescription("Konqi");
 }
 
-void TestRustObjects::testStringSetter()
+void TestRustObjects::testOneLevelStringSetter()
 {
     // GIVEN
     Person person;
@@ -37,5 +40,31 @@ void TestRustObjects::testStringSetter()
     QCOMPARE(person.object()->description(), QString("Konqi"));
 }
 
+void TestRustObjects::testTwoLevelsConstructor()
+{
+    Group group;
+}
+
+void TestRustObjects::testTwoLevelsStringGetter()
+{
+    Group group;
+    group.person()->object()->setDescription("Konqi");
+}
+
+void TestRustObjects::testTwoLevelsStringSetter()
+{
+    // GIVEN
+    Group group;
+    QSignalSpy spy(group.person()->object(), &InnerObject::descriptionChanged);
+
+    // WHEN
+    group.person()->object()->setDescription("Konqi");
+
+    // THEN
+    QVERIFY(spy.isValid());
+    QCOMPARE(spy.count(), 1);
+    QCOMPARE(group.person()->object()->description(), QString("Konqi"));
+}
+
 QTEST_MAIN(TestRustObjects)
 #include "test_objects.moc"

tests/test_objects.json

@@ -23,6 +23,14 @@
                     "type": "InnerObject"
                 }
             }
+        },
+        "Group": {
+            "type": "Object",
+            "properties": {
+                "person": {
+                    "type": "Person"
+                }
+            }
         }
     }
 }

tests/test_objects_rust.cpp

@@ -58,26 +58,70 @@ typedef void (*qbytearray_set)(QByteArray*, qbytearray_t*);
 void set_qbytearray(QByteArray* v, qbytearray_t* val) {
     *v = *val;
 }
+extern "C" {
+    Group::Private* group_new(Group*, Person*, InnerObject*, void (*)(InnerObject*));
+    void group_free(Group::Private*);
+    Person::Private* group_person_get(const Group::Private*);
+};
+
 extern "C" {
     InnerObject::Private* inner_object_new(InnerObject*, void (*)(InnerObject*));
     void inner_object_free(InnerObject::Private*);
     void inner_object_description_get(const InnerObject::Private*, QString*, qstring_set);
     void inner_object_description_set(InnerObject::Private*, qstring_t);
 };
+
 extern "C" {
     Person::Private* person_new(Person*, InnerObject*, void (*)(InnerObject*));
     void person_free(Person::Private*);
     InnerObject::Private* person_object_get(const Person::Private*);
 };
+
+Group::Group(bool /*owned*/, QObject *parent):
+    QObject(parent),
+    m_person(new Person(false, this)),
+    m_d(0),
+    m_ownsPrivate(false)
+{
+}
+
+Group::Group(QObject *parent):
+    QObject(parent),
+    m_person(new Person(false, this)),
+    m_d(group_new(this, m_person, m_person->m_object,
+        innerObjectDescriptionChanged)),
+    m_ownsPrivate(true)
+{
+    m_person->m_object->m_d = person_object_get(m_person->m_d);
+    m_person->m_d = group_person_get(m_d);
+}
+
+Group::~Group() {
+    if (m_ownsPrivate) {
+        group_free(m_d);
+    }
+}
+const Person* Group::person() const
+{
+    return m_person;
+}
+Person* Group::person()
+{
+    return m_person;
+}
 InnerObject::InnerObject(bool /*owned*/, QObject *parent):
     QObject(parent),
     m_d(0),
-    m_ownsPrivate(false) {}
+    m_ownsPrivate(false)
+{
+}
+
 InnerObject::InnerObject(QObject *parent):
     QObject(parent),
     m_d(inner_object_new(this,
         innerObjectDescriptionChanged)),
-    m_ownsPrivate(true) {
+    m_ownsPrivate(true)
+{
 }
 
 InnerObject::~InnerObject() {
@@ -98,14 +142,18 @@ Person::Person(bool /*owned*/, QObject *parent):
     QObject(parent),
     m_object(new InnerObject(false, this)),
     m_d(0),
-    m_ownsPrivate(false) {}
+    m_ownsPrivate(false)
+{
+}
+
 Person::Person(QObject *parent):
     QObject(parent),
     m_object(new InnerObject(false, this)),
     m_d(person_new(this, m_object,
         innerObjectDescriptionChanged)),
-    m_ownsPrivate(true) {
-    m_object->m_d = person_object_get(this->m_d);
+    m_ownsPrivate(true)
+{
+    m_object->m_d = person_object_get(m_d);
 }
 
 Person::~Person() {

tests/test_objects_rust.h

@@ -4,11 +4,35 @@
 
 #include <QObject>
 #include <QAbstractItemModel>
+
+class Group;
+class InnerObject;
 class Person;
 
+class Group : public QObject
+{
+    Q_OBJECT
+    friend class Person;
+public:
+    class Private;
+private:
+    Person* const m_person;
+    Private * m_d;
+    bool m_ownsPrivate;
+    Q_PROPERTY(Person* person READ person FINAL)
+    explicit Group(bool owned, QObject *parent);
+public:
+    explicit Group(QObject *parent = nullptr);
+    ~Group();
+    const Person* person() const;
+    Person* person();
+signals:
+};
+
 class InnerObject : public QObject
 {
     Q_OBJECT
+    friend class Group;
     friend class Person;
 public:
     class Private;
@@ -29,7 +53,7 @@ signals:
 class Person : public QObject
 {
     Q_OBJECT
-    friend class Person;
+    friend class Group;
 public:
     class Private;
 private:

tests/test_tree_rust.cpp

@@ -182,10 +182,14 @@ extern "C" {
         void (*)(Persons*));
     void persons_free(Persons::Private*);
 };
+
 Persons::Persons(bool /*owned*/, QObject *parent):
     QAbstractItemModel(parent),
     m_d(0),
-    m_ownsPrivate(false) {}
+    m_ownsPrivate(false)
+{
+}
+
 Persons::Persons(QObject *parent):
     QAbstractItemModel(parent),
     m_d(persons_new(this,
@@ -226,7 +230,8 @@ Persons::Persons(QObject *parent):
             o->endRemoveRows();
         }
 )),
-    m_ownsPrivate(true) {
+    m_ownsPrivate(true)
+{
     connect(this, &Persons::newDataReady, this, [this](const QModelIndex& i) {
         fetchMore(i);
     }, Qt::QueuedConnection);

tests/test_tree_rust.h

@@ -5,6 +5,8 @@
 #include <QObject>
 #include <QAbstractItemModel>
 
+class Persons;
+
 class Persons : public QAbstractItemModel
 {
     Q_OBJECT