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Diffstat (limited to 'src/qml/qml/qqmltype_p_p.h')
| -rw-r--r-- | src/qml/qml/qqmltype_p_p.h | 303 |
1 files changed, 303 insertions, 0 deletions
diff --git a/src/qml/qml/qqmltype_p_p.h b/src/qml/qml/qqmltype_p_p.h new file mode 100644 index 0000000000..2bf83ddb8b --- /dev/null +++ b/src/qml/qml/qqmltype_p_p.h @@ -0,0 +1,303 @@ +// Copyright (C) 2019 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only + +#ifndef QQMLTYPE_P_P_H +#define QQMLTYPE_P_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <private/qqmltype_p.h> +#include <private/qstringhash_p.h> +#include <private/qqmlproxymetaobject_p.h> +#include <private/qqmlrefcount_p.h> +#include <private/qqmlpropertycache_p.h> +#include <private/qqmlmetatype_p.h> +#include <private/qqmltypeloader_p.h> +#include <private/qv4executablecompilationunit_p.h> +#include <private/qv4engine_p.h> + +#include <QAtomicInteger> + +QT_BEGIN_NAMESPACE + +class QQmlTypePrivate final : public QQmlRefCounted<QQmlTypePrivate> +{ + Q_DISABLE_COPY_MOVE(QQmlTypePrivate) +public: + struct ProxyMetaObjects + { + ~ProxyMetaObjects() + { + for (const QQmlProxyMetaObject::ProxyData &metaObject : data) + free(metaObject.metaObject); + } + + QList<QQmlProxyMetaObject::ProxyData> data; + bool containsRevisionedAttributes = false; + }; + + struct Enums + { + ~Enums() { qDeleteAll(scopedEnums); } + + QStringHash<int> enums; + QStringHash<int> scopedEnumIndex; // maps from enum name to index in scopedEnums + QList<QStringHash<int> *> scopedEnums; + }; + + QQmlTypePrivate(QQmlType::RegistrationType type); + + const ProxyMetaObjects *init() const; + + QUrl sourceUrl() const + { + switch (regType) { + case QQmlType::CompositeType: + return extraData.compositeTypeData; + case QQmlType::CompositeSingletonType: + return extraData.singletonTypeData->singletonInstanceInfo->url; + case QQmlType::InlineComponentType: + return extraData.inlineComponentTypeData; + default: + return QUrl(); + } + } + + const QQmlTypePrivate *attachedPropertiesBase(QQmlEnginePrivate *engine) const + { + for (const QQmlTypePrivate *d = this; d; d = d->resolveCompositeBaseType(engine).d.data()) { + if (d->regType == QQmlType::CppType) + return d->extraData.cppTypeData->attachedPropertiesType ? d : nullptr; + + if (d->regType != QQmlType::CompositeType) + return nullptr; + } + return nullptr; + } + + bool isComposite() const + { + return regType == QQmlType::CompositeType || regType == QQmlType::CompositeSingletonType; + } + + bool isValueType() const + { + return regType == QQmlType::CppType && !(typeId.flags() & QMetaType::PointerToQObject); + } + + QQmlType resolveCompositeBaseType(QQmlEnginePrivate *engine) const; + QQmlPropertyCache::ConstPtr compositePropertyCache(QQmlEnginePrivate *engine) const; + + struct QQmlCppTypeData + { + int allocationSize; + void (*newFunc)(void *, void *); + void *userdata = nullptr; + QString noCreationReason; + QVariant (*createValueTypeFunc)(const QJSValue &); + int parserStatusCast; + QObject *(*extFunc)(QObject *); + const QMetaObject *extMetaObject; + QQmlCustomParser *customParser; + QQmlAttachedPropertiesFunc attachedPropertiesFunc; + const QMetaObject *attachedPropertiesType; + int propertyValueSourceCast; + int propertyValueInterceptorCast; + int finalizerCast; + bool registerEnumClassesUnscoped; + bool registerEnumsFromRelatedTypes; + bool constructValueType; + bool populateValueType; + }; + + struct QQmlSingletonTypeData + { + QQmlType::SingletonInstanceInfo::ConstPtr singletonInstanceInfo; + QObject *(*extFunc)(QObject *); + const QMetaObject *extMetaObject; + }; + + int index = -1; + + union extraData { + extraData() {} // QQmlTypePrivate() does the actual construction. + ~extraData() {} // ~QQmlTypePrivate() does the actual destruction. + + QQmlCppTypeData *cppTypeData; + QQmlSingletonTypeData *singletonTypeData; + QUrl compositeTypeData; + QUrl inlineComponentTypeData; + QMetaSequence sequentialContainerTypeData; + const char *interfaceTypeData; + } extraData; + static_assert(sizeof(extraData) == sizeof(void *)); + + QHashedString module; + QString name; + QString elementName; + QMetaType typeId; + QMetaType listId; + QQmlType::RegistrationType regType; + QTypeRevision version; + QTypeRevision revision = QTypeRevision::zero(); + const QMetaObject *baseMetaObject = nullptr; + + void setName(const QString &uri, const QString &element); + + template<typename String> + static int enumValue( + const QQmlRefPointer<const QQmlTypePrivate> &d, QQmlEnginePrivate *engine, + const String &name, bool *ok) + { + return doGetEnumValue(d, engine, [&](const QQmlTypePrivate::Enums *enums) { + return enums->enums.value(name); + }, ok); + } + + template<typename String> + static int scopedEnumIndex( + const QQmlRefPointer<const QQmlTypePrivate> &d, QQmlEnginePrivate *engine, + const String &name, bool *ok) + { + return doGetEnumValue(d, engine, [&](const QQmlTypePrivate::Enums *enums) { + return enums->scopedEnumIndex.value(name); + }, ok); + } + + template<typename String> + static int scopedEnumValue( + const QQmlRefPointer<const QQmlTypePrivate> &d, QQmlEnginePrivate *engine, int index, + const String &name, bool *ok) + { + return doGetEnumValue(d, engine, [&](const QQmlTypePrivate::Enums *enums) { + Q_ASSERT(index > -1 && index < enums->scopedEnums.size()); + return enums->scopedEnums.at(index)->value(name); + }, ok); + } + + template<typename String1, typename String2> + static int scopedEnumValue( + const QQmlRefPointer<const QQmlTypePrivate> &d, QQmlEnginePrivate *engine, + const String1 &scopedEnumName, const String2 &name, bool *ok) + { + return doGetEnumValue(d, engine, [&](const QQmlTypePrivate::Enums *enums) -> const int * { + const int *rv = enums->scopedEnumIndex.value(scopedEnumName); + if (!rv) + return nullptr; + + const int index = *rv; + Q_ASSERT(index > -1 && index < enums->scopedEnums.size()); + return enums->scopedEnums.at(index)->value(name); + }, ok); + } + + const QMetaObject *metaObject() const + { + if (isValueType()) + return metaObjectForValueType(); + + const QQmlTypePrivate::ProxyMetaObjects *proxies = init(); + return proxies->data.isEmpty() + ? baseMetaObject + : proxies->data.constFirst().metaObject; + } + + const QMetaObject *metaObjectForValueType() const + { + Q_ASSERT(isValueType()); + + // Prefer the extension meta object, if any. + // Extensions allow registration of non-gadget value types. + if (const QMetaObject *extensionMetaObject = extraData.cppTypeData->extMetaObject) { + // This may be a namespace even if the original metaType isn't. + // You can do such things with QML_FOREIGN declarations. + if (extensionMetaObject->metaType().flags() & QMetaType::IsGadget) + return extensionMetaObject; + } + + if (baseMetaObject) { + // This may be a namespace even if the original metaType isn't. + // You can do such things with QML_FOREIGN declarations. + if (baseMetaObject->metaType().flags() & QMetaType::IsGadget) + return baseMetaObject; + } + + return nullptr; + } + + static QQmlType compositeQmlType( + const QQmlRefPointer<QV4::CompiledData::CompilationUnit> &unit, + QQmlTypeLoader *typeLoader, const QString &type) + { + Q_ASSERT(typeLoader); + + const QQmlType qmltype + = unit->typeNameCache->query<QQmlImport::AllowRecursion>(type, typeLoader).type; + if (!qmltype.isValid()) + return qmltype; + + if (qmltype.isInlineComponentType() + && !QQmlMetaType::obtainCompilationUnit(qmltype.typeId())) { + // If it seems to be an IC type, make sure there is an actual + // compilation unit for it. We create inline component types speculatively. + return QQmlType(); + } + + return qmltype; + } + +private: + mutable QAtomicPointer<const ProxyMetaObjects> proxyMetaObjects; + mutable QAtomicPointer<const Enums> enums; + + ~QQmlTypePrivate(); + friend class QQmlRefCounted<QQmlTypePrivate>; + + struct EnumInfo { + QStringList path; + QString metaObjectName; + QString enumName; + QString enumKey; + QString metaEnumScope; + bool scoped; + }; + + template<typename Op> + static int doGetEnumValue( + const QQmlRefPointer<const QQmlTypePrivate> &d, QQmlEnginePrivate *engine, + Op &&op, bool *ok) + { + Q_ASSERT(ok); + if (d) { + if (const QQmlTypePrivate::Enums *enums = d->initEnums(engine)) { + if (const int *rv = op(enums)) { + *ok = true; + return *rv; + } + } + } + + *ok = false; + return -1; + } + + const Enums *initEnums(QQmlEnginePrivate *engine) const; + void insertEnums(Enums *enums, const QMetaObject *metaObject) const; + void insertEnumsFromPropertyCache(Enums *enums, const QQmlPropertyCache::ConstPtr &cache) const; + + void createListOfPossibleConflictingItems(const QMetaObject *metaObject, QList<EnumInfo> &enumInfoList, QStringList path) const; + void createEnumConflictReport(const QMetaObject *metaObject, const QString &conflictingKey) const; +}; + +QT_END_NAMESPACE + +#endif // QQMLTYPE_P_P_H |