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Details

Type: Epic
Resolution: Unresolved
Priority: P2: Important
Fix Version/s: 6.x
Affects Version/s: None
Component/s: Core: Object Model, QML: Declarative and Javascript Engine
Labels:
- qmlnext

Epic Name:
Remove the duplicated object model from QML

Description

Currently, QML duplicates data from Qt's meta object model in its own datastructures for performance reasons.

To avoid this overhead, we need to make the core data structures suitable for QML.

Attachments

Issue Links

resulted from

QTBUG-76023 Split Qt QML into several pieces

Open

mentioned in: Page Loading...

Sub-Tasks

1.	Add QMetaType accessor for return and argument type to QMetaMethod	Closed	Fabian Kosmale
2.	Extend QMetaObject to store whether property is alias or var property	Closed	Fabian Kosmale
3.	Adapt declarative to further metaobject changes	Closed	Fabian Kosmale
4.	Refactor and cleanup QMeta* classes	Closed	Fabian Kosmale

Gerrit Reviews

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For Gerrit Dashboard: QTBUG-82931
#	Subject	Branch	Project	Status	CR	V
322530,7	Always fully resolve property data on creation	dev	qt/qtdeclarative	Status: MERGED	+2	0
322688,6	Remove hack to get the methodCount of a metaobject	dev	qt/qtdeclarative	Status: MERGED	+2	0
322689,6	Make QQmlMetaObject independent of the property cache	dev	qt/qtdeclarative	Status: MERGED	+2	0
322690,6	Get rid of the QQmlStaticMetaObject	dev	qt/qtdeclarative	Status: MERGED	+2	0
322691,6	QML engine: Use QMetaType instead of metatype-id in propertydata	dev	qt/qtdeclarative	Status: MERGED	+2	0
322708,5	Merge fastFlagsForProperty with flagsForProperty	dev	qt/qtdeclarative	Status: MERGED	+2	0
322822,9	Unify overload resolution code and introduce a cache	dev	qt/qtdeclarative	Status: MERGED	+2	0
323204,2	QMetaProperty: Enable constructing only Data	dev	qt/qtbase	Status: MERGED	+2	0
333488,1	Make QQmlMetaObject independent of the property cache	tqtc/lts-5.15	qt/tqtc-qtdeclarative	Status: ABANDONED	-1	0
335399,5	QV4::populateJSCallArguments: Use v4->metaTypeToJS	dev	qt/qtdeclarative	Status: MERGED	+2	0
335436,3	QQmlMetaObject::methodReturnType: provide metatype	dev	qt/qtdeclarative	Status: MERGED	+2	0
335437,3	metaTypeToJS: use QMetaType instead of id	dev	qt/qtdeclarative	Status: MERGED	+2	0
335473,2	QQmlMetaObject::methodParameterTypes: Get metatype directly	dev	qt/qtdeclarative	Status: MERGED	+2	0
335520,5	Engine: Cleanup method argument passing	dev	qt/qtdeclarative	Status: MERGED	+2	0
337243,2	QQmlPropertyCache: remove dead member	dev	qt/qtdeclarative	Status: MERGED	+2	0
337611,3	QQmlData: Remove parentChanged code	dev	qt/qtdeclarative	Status: MERGED	+2	0
337712,4	QQmlEnginePrivate: remove functions that only forward to QQmlMetaType	dev	qt/qtdeclarative	Status: MERGED	+2	0
337770,3	Remove QQmlEnginePrivate::isQObject	dev	qt/qtdeclarative	Status: MERGED	+2	0
337773,4	Remove QQmlMetaType::isQObject	dev	qt/qtdeclarative	Status: MERGED	+2	0
337788,4	QQmlMetaType: Remove qmlLists member	dev	qt/qtdeclarative	Status: MERGED	+2	0
359582,1	Always fully resolve property data on creation	tqtc/lts-5.15	qt/tqtc-qtdeclarative	Status: ABANDONED	-1	0