QML: Port QV4::CompiledData::Object to new special integer bitfield

Task-number: QTBUG-99545
Change-Id: Ia57a16313e883a8d4dab15c971181440ed1d2214
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Sami Shalayel <sami.shalayel@qt.io>
(cherry picked from commit 745cce4391a8b6255605cb304d8bc14b11168423)

10 files changed, 90 insertions, 36 deletions

diff --git a/src/qml/common/qv4compileddata_p.h b/src/qml/common/qv4compileddata_p.h
index 333878ef25..fb4c13c81d 100644
--- a/src/qml/common/qv4compileddata_p.h
+++ b/src/qml/common/qv4compileddata_p.h
@@ -798,7 +798,12 @@ static_assert(sizeof(Alias) == 20, "Alias structure needs to have the expected s
 
 struct Object
 {
-    enum Flags : unsigned int {
+private:
+    using FlagsField = quint32_le_bitfield_member<0, 15>;
+    using DefaultPropertyIsAliasField = quint32_le_bitfield_member<15, 1>;
+    using IdField = quint32_le_bitfield_member<16, 16, qint32>;
+public:
+    enum Flag : unsigned int {
         NoFlag = 0x0,
         IsComponent = 0x1, // object was identified to be an explicit or implicit component boundary
         HasDeferredBindings = 0x2, // any of the bindings are deferred
@@ -806,17 +811,15 @@ struct Object
         IsInlineComponentRoot = 0x8,
         InPartOfInlineComponent = 0x10
     };
+    Q_DECLARE_FLAGS(Flags, Flag);
 
     // Depending on the use, this may be the type name to instantiate before instantiating this
     // object. For grouped properties the type name will be empty and for attached properties
     // it will be the name of the attached type.
     quint32_le inheritedTypeNameIndex;
     quint32_le idNameIndex;
-    union {
-        quint32_le_bitfield<0, 15> flags;
-        quint32_le_bitfield<15, 1> defaultPropertyIsAlias;
-        qint32_le_bitfield<16, 16> id;
-    };
+    quint32_le_bitfield_union<FlagsField, DefaultPropertyIsAliasField, IdField>
+            flagsAndDefaultPropertyIsAliasAndId;
     qint32_le indexOfDefaultPropertyOrAlias; // -1 means no default property declared in this object
     quint16_le nFunctions;
     quint16_le nProperties;
@@ -845,6 +848,48 @@ struct Object
 //    InlineComponent[]
 //    RequiredPropertyExtraData[]
 
+    Flags flags() const
+    {
+        return Flags(flagsAndDefaultPropertyIsAliasAndId.get<FlagsField>());
+    }
+
+    bool hasFlag(Flag flag) const
+    {
+        return flagsAndDefaultPropertyIsAliasAndId.get<FlagsField>() & flag;
+    }
+
+    void setFlag(Flag flag)
+    {
+        flagsAndDefaultPropertyIsAliasAndId.set<FlagsField>(
+                flagsAndDefaultPropertyIsAliasAndId.get<FlagsField>() | flag);
+    }
+
+    void setFlags(Flags flags)
+    {
+        flagsAndDefaultPropertyIsAliasAndId.set<FlagsField>(flags);
+    }
+
+    bool hasAliasAsDefaultProperty() const
+    {
+        return flagsAndDefaultPropertyIsAliasAndId.get<DefaultPropertyIsAliasField>();
+    }
+
+    void setHasAliasAsDefaultProperty(bool defaultAlias)
+    {
+        flagsAndDefaultPropertyIsAliasAndId.set<DefaultPropertyIsAliasField>(defaultAlias);
+    }
+
+    qint32 objectId() const
+    {
+        return flagsAndDefaultPropertyIsAliasAndId.get<IdField>();
+    }
+
+    void setObjectId(qint32 id)
+    {
+        flagsAndDefaultPropertyIsAliasAndId.set<IdField>(id);
+    }
+
+
     static int calculateSizeExcludingSignalsAndEnums(int nFunctions, int nProperties, int nAliases, int nEnums, int nSignals, int nBindings, int nNamedObjectsInComponent, int nInlineComponents, int nRequiredPropertyExtraData)
     {
         return ( sizeof(Object)
diff --git a/src/qml/compiler/qqmlirbuilder.cpp b/src/qml/compiler/qqmlirbuilder.cpp
index b5210e6510..20c6b9d290 100644
--- a/src/qml/compiler/qqmlirbuilder.cpp
+++ b/src/qml/compiler/qqmlirbuilder.cpp
@@ -1664,10 +1664,10 @@ void QmlUnitGenerator::generate(Document &output, const QV4::CompiledData::Depen
         QV4::CompiledData::Object *objectToWrite = reinterpret_cast<QV4::CompiledData::Object*>(objectPtr);
         objectToWrite->inheritedTypeNameIndex = o->inheritedTypeNameIndex;
         objectToWrite->indexOfDefaultPropertyOrAlias = o->indexOfDefaultPropertyOrAlias;
-        objectToWrite->defaultPropertyIsAlias = o->defaultPropertyIsAlias;
-        objectToWrite->flags = o->flags;
+        objectToWrite->setHasAliasAsDefaultProperty(o->defaultPropertyIsAlias);
+        objectToWrite->setFlags(QV4::CompiledData::Object::Flags(o->flags));
         objectToWrite->idNameIndex = o->idNameIndex;
-        objectToWrite->id = o->id;
+        objectToWrite->setObjectId(o->id);
         objectToWrite->location = o->location;
         objectToWrite->locationOfIdProperty = o->locationOfIdProperty;
 
diff --git a/src/qml/compiler/qqmlirbuilder_p.h b/src/qml/compiler/qqmlirbuilder_p.h
index 213d43134a..0f1ae70bfa 100644
--- a/src/qml/compiler/qqmlirbuilder_p.h
+++ b/src/qml/compiler/qqmlirbuilder_p.h
@@ -393,6 +393,10 @@ public:
     int namedObjectsInComponentCount() const { return namedObjectsInComponent.size(); }
     const quint32 *namedObjectsInComponentTable() const { return namedObjectsInComponent.begin(); }
 
+    bool hasFlag(QV4::CompiledData::Object::Flag flag) const { return flags & flag; }
+    qint32 objectId() const { return id; }
+    bool hasAliasAsDefaultProperty() const { return defaultPropertyIsAlias; }
+
 private:
     friend struct ::QQmlIRLoader;
 
diff --git a/src/qml/inlinecomponentutils_p.h b/src/qml/inlinecomponentutils_p.h
index 41333cbb1b..56794779a6 100644
--- a/src/qml/inlinecomponentutils_p.h
+++ b/src/qml/inlinecomponentutils_p.h
@@ -123,8 +123,11 @@ void fillAdjacencyListForInlineComponents(ObjectContainer *objectContainer, Adja
         auto referencedInICObjectIndex = ic.objectIndex + 1;
         while (int(referencedInICObjectIndex) < objectContainer->objectCount()) {
             auto potentiallyReferencedInICObject = objectContainer->objectAt(referencedInICObjectIndex);
-            bool stillInIC = !(potentiallyReferencedInICObject-> flags & QV4::CompiledData::Object::IsInlineComponentRoot)
-                    && (potentiallyReferencedInICObject-> flags & QV4::CompiledData::Object::InPartOfInlineComponent);
+            bool stillInIC
+                    = !potentiallyReferencedInICObject->hasFlag(
+                              QV4::CompiledData::Object::IsInlineComponentRoot)
+                    && potentiallyReferencedInICObject->hasFlag(
+                            QV4::CompiledData::Object::InPartOfInlineComponent);
             if (!stillInIC)
                 break;
             createEdgeFromTypeRef(objectContainer->resolvedType(potentiallyReferencedInICObject->inheritedTypeNameIndex));
diff --git a/src/qml/jsruntime/qv4executablecompilationunit.cpp b/src/qml/jsruntime/qv4executablecompilationunit.cpp
index 9a6f0de37d..ab5cd9363f 100644
--- a/src/qml/jsruntime/qv4executablecompilationunit.cpp
+++ b/src/qml/jsruntime/qv4executablecompilationunit.cpp
@@ -390,7 +390,7 @@ IdentifierHash ExecutableCompilationUnit::createNamedObjectsPerComponent(int com
     const quint32_le *namedObjectIndexPtr = component->namedObjectsInComponentTable();
     for (quint32 i = 0; i < component->nNamedObjectsInComponent; ++i, ++namedObjectIndexPtr) {
         const CompiledData::Object *namedObject = objectAt(*namedObjectIndexPtr);
-        namedObjectCache.add(runtimeStrings[namedObject->idNameIndex], namedObject->id);
+        namedObjectCache.add(runtimeStrings[namedObject->idNameIndex], namedObject->objectId());
     }
     Q_ASSERT(!namedObjectCache.isEmpty());
     return *namedObjectsPerComponentCache.insert(componentObjectIndex, namedObjectCache);
@@ -446,9 +446,10 @@ void ExecutableCompilationUnit::finalizeCompositeType(QQmlEnginePrivate *qmlEngi
         int lastICRoot = ic.objectIndex;
         for (int i = ic.objectIndex; i<objectCount(); ++i) {
             const QV4::CompiledData::Object *obj = objectAt(i);
-            bool leftCurrentInlineComponent =
-                       (i != lastICRoot && obj->flags & QV4::CompiledData::Object::IsInlineComponentRoot)
-                    || !(obj->flags & QV4::CompiledData::Object::InPartOfInlineComponent);
+            bool leftCurrentInlineComponent
+                    = (i != lastICRoot
+                            && obj->hasFlag(QV4::CompiledData::Object::IsInlineComponentRoot))
+                        || !obj->hasFlag(QV4::CompiledData::Object::InPartOfInlineComponent);
             if (leftCurrentInlineComponent)
                 break;
             inlineComponentData[lastICRoot].totalBindingCount += obj->nBindings;
@@ -478,9 +479,9 @@ void ExecutableCompilationUnit::finalizeCompositeType(QQmlEnginePrivate *qmlEngi
     int objectCount = 0;
     for (quint32 i = 0, count = this->objectCount(); i < count; ++i) {
         const QV4::CompiledData::Object *obj = objectAt(i);
-        if (obj->flags & QV4::CompiledData::Object::InPartOfInlineComponent) {
+        if (obj->hasFlag(QV4::CompiledData::Object::InPartOfInlineComponent))
             continue;
-        }
+
         bindingCount += obj->nBindings;
         if (auto *typeRef = resolvedTypes.value(obj->inheritedTypeNameIndex)) {
             const auto type = typeRef->type();
diff --git a/src/qml/qml/qqmlirloader.cpp b/src/qml/qml/qqmlirloader.cpp
index 7b871a419a..2e3f6cabe9 100644
--- a/src/qml/qml/qqmlirloader.cpp
+++ b/src/qml/qml/qqmlirloader.cpp
@@ -107,9 +107,9 @@ QmlIR::Object *QQmlIRLoader::loadObject(const QV4::CompiledData::Object *seriali
                  serializedObject->location);
 
     object->indexOfDefaultPropertyOrAlias = serializedObject->indexOfDefaultPropertyOrAlias;
-    object->defaultPropertyIsAlias = serializedObject->defaultPropertyIsAlias;
-    object->flags = serializedObject->flags;
-    object->id = serializedObject->id;
+    object->defaultPropertyIsAlias = serializedObject->hasAliasAsDefaultProperty();
+    object->flags = serializedObject->flags();
+    object->id = serializedObject->objectId();
     object->locationOfIdProperty = serializedObject->locationOfIdProperty;
 
     QVector<int> functionIndices;
diff --git a/src/qml/qml/qqmlobjectcreator.cpp b/src/qml/qml/qqmlobjectcreator.cpp
index cd94304b52..a4140e8a57 100644
--- a/src/qml/qml/qqmlobjectcreator.cpp
+++ b/src/qml/qml/qqmlobjectcreator.cpp
@@ -819,7 +819,7 @@ bool QQmlObjectCreator::setPropertyBinding(const QQmlPropertyData *bindingProper
                 for (int i = 0, end = compilationUnit->objectCount(); i != end; ++i) {
                     const QV4::CompiledData::Object *external = compilationUnit->objectAt(i);
                     if (external->idNameIndex == binding->propertyNameIndex) {
-                        bindingTarget = groupObject = context->idValue(external->id);
+                        bindingTarget = groupObject = context->idValue(external->objectId());
                         break;
                     }
                 }
@@ -1170,8 +1170,8 @@ void QQmlObjectCreator::recordError(const QV4::CompiledData::Location &location,
 
 void QQmlObjectCreator::registerObjectWithContextById(const QV4::CompiledData::Object *object, QObject *instance) const
 {
-    if (object->id >= 0)
-        context->setIdValue(object->id, instance);
+    if (object->objectId() >= 0)
+        context->setIdValue(object->objectId(), instance);
 }
 
 QObject *QQmlObjectCreator::createInstance(int index, QObject *parent, bool isContextObject)
@@ -1191,7 +1191,7 @@ QObject *QQmlObjectCreator::createInstance(int index, QObject *parent, bool isCo
     QQmlParserStatus *parserStatus = nullptr;
     bool installPropertyCache = true;
 
-    if (obj->flags & QV4::CompiledData::Object::IsComponent) {
+    if (obj->hasFlag(QV4::CompiledData::Object::IsComponent)) {
         isComponent = true;
         instance = createComponent(engine, compilationUnit.data(), index, parent, context);
         typeName = QStringLiteral("<component>");
@@ -1293,7 +1293,7 @@ QObject *QQmlObjectCreator::createInstance(int index, QObject *parent, bool isCo
     // an additional check
     const bool documentRoot = static_cast<quint32>(index) == /*root object*/ 0
             || ddata->rootObjectInCreation
-            || (obj->flags & QV4::CompiledData::Object::IsInlineComponentRoot);
+            || obj->hasFlag(QV4::CompiledData::Object::IsInlineComponentRoot);
     context->installContext(
             ddata, documentRoot ? QQmlContextData::DocumentRoot : QQmlContextData::OrdinaryObject);
 
@@ -1311,7 +1311,7 @@ QObject *QQmlObjectCreator::createInstance(int index, QObject *parent, bool isCo
     if (isContextObject)
         context->setContextObject(instance);
 
-    if (customParser && obj->flags & QV4::CompiledData::Object::HasCustomParserBindings) {
+    if (customParser && obj->hasFlag(QV4::CompiledData::Object::HasCustomParserBindings)) {
         customParser->engine = QQmlEnginePrivate::get(engine);
         customParser->imports = compilationUnit->typeNameCache.data();
 
@@ -1542,7 +1542,7 @@ bool QQmlObjectCreator::populateInstance(int index, QObject *instance, QObject *
     qSwap(_vmeMetaObject, vmeMetaObject);
 
     _ddata->compilationUnit = compilationUnit;
-    if (_compiledObject->flags & QV4::CompiledData::Object::HasDeferredBindings)
+    if (_compiledObject->hasFlag(QV4::CompiledData::Object::HasDeferredBindings))
         _ddata->deferData(_compiledObjectIndex, compilationUnit, context);
 
     const qsizetype oldRequiredPropertiesCount = sharedState->requiredProperties.size();
@@ -1592,7 +1592,7 @@ bool QQmlObjectCreator::populateInstance(int index, QObject *instance, QObject *
             Q_ASSERT(binding->isGroupProperty());
             return { 0, _propertyCache->propertyOffset() + 1 }; // 4.
         }
-        Q_ASSERT(!(_compiledObject->flags & QV4::CompiledData::Object::IsComponent));
+        Q_ASSERT(!_compiledObject->hasFlag(QV4::CompiledData::Object::IsComponent));
         QQmlType type = typeRef->type();
         if (type.isValid() && !type.isInlineComponentType()) {
             return { 0, _propertyCache->propertyCount() }; // 1.
diff --git a/src/qml/qml/qqmlpropertycachecreator_p.h b/src/qml/qml/qqmlpropertycachecreator_p.h
index c1f9175876..f6d85f9214 100644
--- a/src/qml/qml/qqmlpropertycachecreator_p.h
+++ b/src/qml/qml/qqmlpropertycachecreator_p.h
@@ -290,7 +290,7 @@ inline QQmlError QQmlPropertyCacheCreator<ObjectContainer>::buildMetaObjectRecur
     const CompiledObject *obj = objectContainer->objectAt(objectIndex);
     bool needVMEMetaObject = isVMERequired == VMEMetaObjectIsRequired::Always || obj->propertyCount() != 0 || obj->aliasCount() != 0
             || obj->signalCount() != 0 || obj->functionCount() != 0 || obj->enumCount() != 0
-            || (((obj->flags & QV4::CompiledData::Object::IsComponent)
+            || ((obj->hasFlag(QV4::CompiledData::Object::IsComponent)
                  || (objectIndex == 0 && isAddressable(objectContainer->url())))
                 && !objectContainer->resolvedType(obj->inheritedTypeNameIndex)->isFullyDynamicType());
 
@@ -719,7 +719,7 @@ inline QQmlError QQmlPropertyCacheCreator<ObjectContainer>::createMetaObject(int
 
 
         QString propertyName = stringAt(p->nameIndex);
-        if (!obj->defaultPropertyIsAlias && propertyIdx == obj->indexOfDefaultPropertyOrAlias)
+        if (!obj->hasAliasAsDefaultProperty() && propertyIdx == obj->indexOfDefaultPropertyOrAlias)
             cache->_defaultPropertyName = propertyName;
         cache->appendProperty(propertyName, propertyFlags, effectivePropertyIndex++,
                               propertyType, propertyTypeVersion, effectiveSignalIndex);
@@ -805,7 +805,7 @@ inline void QQmlPropertyCacheAliasCreator<ObjectContainer>::appendAliasPropertie
     // from a binding.
     for (int i = 1; i < objectContainer->objectCount(); ++i) {
         const CompiledObject &component = *objectContainer->objectAt(i);
-        if (!(component.flags & QV4::CompiledData::Object::IsComponent))
+        if (!component.hasFlag(QV4::CompiledData::Object::IsComponent))
             continue;
 
         const auto rootBinding = component.bindingsBegin();
@@ -875,7 +875,7 @@ inline void QQmlPropertyCacheAliasCreator<ObjectContainer>::collectObjectsWithAl
         objectsWithAliases->append(objectIndex);
 
     // Stop at Component boundary
-    if (object.flags & QV4::CompiledData::Object::IsComponent && objectIndex != /*root object*/0)
+    if (object.hasFlag(QV4::CompiledData::Object::IsComponent) && objectIndex != /*root object*/0)
         return;
 
     auto binding = object.bindingsBegin();
@@ -1048,7 +1048,7 @@ inline QQmlError QQmlPropertyCacheAliasCreator<ObjectContainer>::appendAliasesTo
 
         const QString propertyName = objectContainer->stringAt(alias->nameIndex);
 
-        if (object.defaultPropertyIsAlias && aliasIndex == object.indexOfDefaultPropertyOrAlias)
+        if (object.hasAliasAsDefaultProperty() && aliasIndex == object.indexOfDefaultPropertyOrAlias)
             propertyCache->_defaultPropertyName = propertyName;
 
         propertyCache->appendProperty(propertyName, propertyFlags, effectivePropertyIndex++,
@@ -1064,7 +1064,7 @@ inline int QQmlPropertyCacheAliasCreator<ObjectContainer>::objectForId(const Com
     for (quint32 i = 0, count = component.namedObjectsInComponentCount(); i < count; ++i) {
         const int candidateIndex = component.namedObjectsInComponentTable()[i];
         const CompiledObject &candidate = *objectContainer->objectAt(candidateIndex);
-        if (candidate.id == id)
+        if (candidate.objectId() == id)
             return candidateIndex;
     }
     return -1;
diff --git a/src/qml/qml/qqmlpropertyvalidator.cpp b/src/qml/qml/qqmlpropertyvalidator.cpp
index 023a945e94..1f6c0e0739 100644
--- a/src/qml/qml/qqmlpropertyvalidator.cpp
+++ b/src/qml/qml/qqmlpropertyvalidator.cpp
@@ -107,7 +107,8 @@ QVector<QQmlError> QQmlPropertyValidator::validateObject(
             return errors;
     }
 
-    if (obj->flags & QV4::CompiledData::Object::IsComponent && !(obj->flags & QV4::CompiledData::Object::IsInlineComponentRoot)) {
+    if (obj->hasFlag(QV4::CompiledData::Object::IsComponent)
+            && !obj->hasFlag(QV4::CompiledData::Object::IsInlineComponentRoot)) {
         Q_ASSERT(obj->nBindings == 1);
         const QV4::CompiledData::Binding *componentBinding = obj->bindingTable();
         Q_ASSERT(componentBinding->type() == QV4::CompiledData::Binding::Type_Object);
diff --git a/src/qmltest/quicktest.cpp b/src/qmltest/quicktest.cpp
index b453b288bd..5cfff6ddaa 100644
--- a/src/qmltest/quicktest.cpp
+++ b/src/qmltest/quicktest.cpp
@@ -302,7 +302,7 @@ private:
 
         if (!object) // Start at root of compilation unit if not enumerating a specific child
             object = compilationUnit->objectAt(0);
-        if (object->flags & Object::IsInlineComponentRoot)
+        if (object->hasFlag(Object::IsInlineComponentRoot))
             return result;
 
         if (const auto superTypeUnit = compilationUnit->resolvedTypes.value(