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Diffstat (limited to 'src/qml/compiler/qqmlpropertyvalidator.cpp')
| -rw-r--r-- | src/qml/compiler/qqmlpropertyvalidator.cpp | 708 |
1 files changed, 0 insertions, 708 deletions
diff --git a/src/qml/compiler/qqmlpropertyvalidator.cpp b/src/qml/compiler/qqmlpropertyvalidator.cpp deleted file mode 100644 index 5e821518a4..0000000000 --- a/src/qml/compiler/qqmlpropertyvalidator.cpp +++ /dev/null @@ -1,708 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the tools applications of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qqmlpropertyvalidator_p.h" - -#include <private/qqmlcustomparser_p.h> -#include <private/qqmlstringconverters_p.h> -#include <QtCore/qdatetime.h> - -QT_BEGIN_NAMESPACE - -QQmlPropertyValidator::QQmlPropertyValidator(QQmlEnginePrivate *enginePrivate, const QQmlImports &imports, const QQmlRefPointer<QV4::CompiledData::CompilationUnit> &compilationUnit) - : enginePrivate(enginePrivate) - , compilationUnit(compilationUnit) - , imports(imports) - , qmlUnit(compilationUnit->unitData()) - , propertyCaches(compilationUnit->propertyCaches) - , bindingPropertyDataPerObject(&compilationUnit->bindingPropertyDataPerObject) -{ - bindingPropertyDataPerObject->resize(compilationUnit->objectCount()); -} - -QVector<QQmlCompileError> QQmlPropertyValidator::validate() -{ - return validateObject(/*root object*/0, /*instantiatingBinding*/nullptr); -} - -typedef QVarLengthArray<const QV4::CompiledData::Binding *, 8> GroupPropertyVector; - -struct BindingFinder -{ - bool operator()(quint32 name, const QV4::CompiledData::Binding *binding) const - { - return name < binding->propertyNameIndex; - } - bool operator()(const QV4::CompiledData::Binding *binding, quint32 name) const - { - return binding->propertyNameIndex < name; - } - bool operator()(const QV4::CompiledData::Binding *lhs, const QV4::CompiledData::Binding *rhs) const - { - return lhs->propertyNameIndex < rhs->propertyNameIndex; - } -}; - -QVector<QQmlCompileError> QQmlPropertyValidator::validateObject(int objectIndex, const QV4::CompiledData::Binding *instantiatingBinding, bool populatingValueTypeGroupProperty) const -{ - const QV4::CompiledData::Object *obj = compilationUnit->objectAt(objectIndex); - - if (obj->flags & QV4::CompiledData::Object::IsComponent) { - Q_ASSERT(obj->nBindings == 1); - const QV4::CompiledData::Binding *componentBinding = obj->bindingTable(); - Q_ASSERT(componentBinding->type == QV4::CompiledData::Binding::Type_Object); - return validateObject(componentBinding->value.objectIndex, componentBinding); - } - - QQmlPropertyCache *propertyCache = propertyCaches.at(objectIndex); - if (!propertyCache) - return QVector<QQmlCompileError>(); - - QQmlCustomParser *customParser = nullptr; - if (auto typeRef = resolvedType(obj->inheritedTypeNameIndex)) { - if (typeRef->type.isValid()) - customParser = typeRef->type.customParser(); - } - - QList<const QV4::CompiledData::Binding*> customBindings; - - // Collect group properties first for sanity checking - // vector values are sorted by property name string index. - GroupPropertyVector groupProperties; - const QV4::CompiledData::Binding *binding = obj->bindingTable(); - for (quint32 i = 0; i < obj->nBindings; ++i, ++binding) { - if (!binding->isGroupProperty()) - continue; - - if (binding->flags & QV4::CompiledData::Binding::IsOnAssignment) - continue; - - if (populatingValueTypeGroupProperty) { - return recordError(binding->location, tr("Property assignment expected")); - } - - GroupPropertyVector::const_iterator pos = std::lower_bound(groupProperties.constBegin(), groupProperties.constEnd(), binding->propertyNameIndex, BindingFinder()); - groupProperties.insert(pos, binding); - } - - QmlIR::PropertyResolver propertyResolver(propertyCache); - - QString defaultPropertyName; - QQmlPropertyData *defaultProperty = nullptr; - if (obj->indexOfDefaultPropertyOrAlias != -1) { - QQmlPropertyCache *cache = propertyCache->parent(); - defaultPropertyName = cache->defaultPropertyName(); - defaultProperty = cache->defaultProperty(); - } else { - defaultPropertyName = propertyCache->defaultPropertyName(); - defaultProperty = propertyCache->defaultProperty(); - } - - QV4::CompiledData::BindingPropertyData collectedBindingPropertyData(obj->nBindings); - - binding = obj->bindingTable(); - for (quint32 i = 0; i < obj->nBindings; ++i, ++binding) { - QString name = stringAt(binding->propertyNameIndex); - - if (customParser) { - if (binding->type == QV4::CompiledData::Binding::Type_AttachedProperty) { - if (customParser->flags() & QQmlCustomParser::AcceptsAttachedProperties) { - customBindings << binding; - continue; - } - } else if (QmlIR::IRBuilder::isSignalPropertyName(name) - && !(customParser->flags() & QQmlCustomParser::AcceptsSignalHandlers)) { - customBindings << binding; - continue; - } - } - - bool bindingToDefaultProperty = false; - bool isGroupProperty = instantiatingBinding && instantiatingBinding->type == QV4::CompiledData::Binding::Type_GroupProperty; - - bool notInRevision = false; - QQmlPropertyData *pd = nullptr; - if (!name.isEmpty()) { - if (binding->flags & QV4::CompiledData::Binding::IsSignalHandlerExpression - || binding->flags & QV4::CompiledData::Binding::IsSignalHandlerObject) { - pd = propertyResolver.signal(name, ¬InRevision); - } else { - pd = propertyResolver.property(name, ¬InRevision, - QmlIR::PropertyResolver::CheckRevision); - } - - if (notInRevision) { - QString typeName = stringAt(obj->inheritedTypeNameIndex); - auto *objectType = resolvedType(obj->inheritedTypeNameIndex); - if (objectType && objectType->type.isValid()) { - return recordError(binding->location, tr("\"%1.%2\" is not available in %3 %4.%5.").arg(typeName).arg(name).arg(objectType->type.module()).arg(objectType->majorVersion).arg(objectType->minorVersion)); - } else { - return recordError(binding->location, tr("\"%1.%2\" is not available due to component versioning.").arg(typeName).arg(name)); - } - } - } else { - if (isGroupProperty) - return recordError(binding->location, tr("Cannot assign a value directly to a grouped property")); - - pd = defaultProperty; - name = defaultPropertyName; - bindingToDefaultProperty = true; - } - - if (pd) - collectedBindingPropertyData[i] = pd; - - if (name.constData()->isUpper() && !binding->isAttachedProperty()) { - QQmlType type; - QQmlImportNamespace *typeNamespace = nullptr; - imports.resolveType(stringAt(binding->propertyNameIndex), &type, nullptr, nullptr, &typeNamespace); - if (typeNamespace) - return recordError(binding->location, tr("Invalid use of namespace")); - return recordError(binding->location, tr("Invalid attached object assignment")); - } - - if (binding->type >= QV4::CompiledData::Binding::Type_Object && (pd || binding->isAttachedProperty())) { - const bool populatingValueTypeGroupProperty - = pd - && QQmlValueTypeFactory::metaObjectForMetaType(pd->propType()) - && !(binding->flags & QV4::CompiledData::Binding::IsOnAssignment); - const QVector<QQmlCompileError> subObjectValidatorErrors - = validateObject(binding->value.objectIndex, binding, - populatingValueTypeGroupProperty); - if (!subObjectValidatorErrors.isEmpty()) - return subObjectValidatorErrors; - } - - // Signal handlers were resolved and checked earlier in the signal handler conversion pass. - if (binding->flags & QV4::CompiledData::Binding::IsSignalHandlerExpression - || binding->flags & QV4::CompiledData::Binding::IsSignalHandlerObject) - continue; - - if (binding->type == QV4::CompiledData::Binding::Type_AttachedProperty) { - if (instantiatingBinding && (instantiatingBinding->isAttachedProperty() || instantiatingBinding->isGroupProperty())) { - return recordError(binding->location, tr("Attached properties cannot be used here")); - } - continue; - } - - if (pd) { - GroupPropertyVector::const_iterator assignedGroupProperty = std::lower_bound(groupProperties.constBegin(), groupProperties.constEnd(), binding->propertyNameIndex, BindingFinder()); - const bool assigningToGroupProperty = assignedGroupProperty != groupProperties.constEnd() && !(binding->propertyNameIndex < (*assignedGroupProperty)->propertyNameIndex); - - if (!pd->isWritable() - && !pd->isQList() - && !binding->isGroupProperty() - && !(binding->flags & QV4::CompiledData::Binding::InitializerForReadOnlyDeclaration) - ) { - - if (assigningToGroupProperty && binding->type < QV4::CompiledData::Binding::Type_Object) - return recordError(binding->valueLocation, tr("Cannot assign a value directly to a grouped property")); - return recordError(binding->valueLocation, tr("Invalid property assignment: \"%1\" is a read-only property").arg(name)); - } - - if (!pd->isQList() && (binding->flags & QV4::CompiledData::Binding::IsListItem)) { - QString error; - if (pd->propType() == qMetaTypeId<QQmlScriptString>()) - error = tr( "Cannot assign multiple values to a script property"); - else - error = tr( "Cannot assign multiple values to a singular property"); - return recordError(binding->valueLocation, error); - } - - if (!bindingToDefaultProperty - && !binding->isGroupProperty() - && !(binding->flags & QV4::CompiledData::Binding::IsOnAssignment) - && assigningToGroupProperty) { - QV4::CompiledData::Location loc = binding->valueLocation; - if (loc < (*assignedGroupProperty)->valueLocation) - loc = (*assignedGroupProperty)->valueLocation; - - if (pd && QQmlValueTypeFactory::isValueType(pd->propType())) - return recordError(loc, tr("Property has already been assigned a value")); - return recordError(loc, tr("Cannot assign a value directly to a grouped property")); - } - - if (binding->type < QV4::CompiledData::Binding::Type_Script) { - QQmlCompileError bindingError = validateLiteralBinding(propertyCache, pd, binding); - if (bindingError.isSet()) - return recordError(bindingError); - } else if (binding->type == QV4::CompiledData::Binding::Type_Object) { - QQmlCompileError bindingError = validateObjectBinding(pd, name, binding); - if (bindingError.isSet()) - return recordError(bindingError); - } else if (binding->isGroupProperty()) { - if (QQmlValueTypeFactory::isValueType(pd->propType())) { - if (QQmlValueTypeFactory::metaObjectForMetaType(pd->propType())) { - if (!pd->isWritable()) { - return recordError(binding->location, tr("Invalid property assignment: \"%1\" is a read-only property").arg(name)); - } - } else { - return recordError(binding->location, tr("Invalid grouped property access")); - } - } else { - if (!enginePrivate->propertyCacheForType(pd->propType())) { - return recordError(binding->location, - tr("Invalid grouped property access: Property \"%1\" with type \"%2\", which is not a value type") - .arg(name) - .arg(QString::fromLatin1(QMetaType::typeName(pd->propType()))) - ); - } - } - } - } else { - if (customParser) { - customBindings << binding; - continue; - } - if (bindingToDefaultProperty) { - return recordError(binding->location, tr("Cannot assign to non-existent default property")); - } else { - return recordError(binding->location, tr("Cannot assign to non-existent property \"%1\"").arg(name)); - } - } - } - - if (obj->idNameIndex) { - if (populatingValueTypeGroupProperty) - return recordError(obj->locationOfIdProperty, tr("Invalid use of id property with a value type")); - - bool notInRevision = false; - collectedBindingPropertyData << propertyResolver.property(QStringLiteral("id"), ¬InRevision); - } - - if (customParser && !customBindings.isEmpty()) { - customParser->clearErrors(); - customParser->validator = this; - customParser->engine = enginePrivate; - customParser->imports = &imports; - customParser->verifyBindings(compilationUnit, customBindings); - customParser->validator = nullptr; - customParser->engine = nullptr; - customParser->imports = (QQmlImports*)nullptr; - QVector<QQmlCompileError> parserErrors = customParser->errors(); - if (!parserErrors.isEmpty()) - return parserErrors; - } - - (*bindingPropertyDataPerObject)[objectIndex] = collectedBindingPropertyData; - - QVector<QQmlCompileError> noError; - return noError; -} - -QQmlCompileError QQmlPropertyValidator::validateLiteralBinding(QQmlPropertyCache *propertyCache, QQmlPropertyData *property, const QV4::CompiledData::Binding *binding) const -{ - if (property->isQList()) { - return QQmlCompileError(binding->valueLocation, tr("Cannot assign primitives to lists")); - } - - QQmlCompileError noError; - - if (property->isEnum()) { - if (binding->flags & QV4::CompiledData::Binding::IsResolvedEnum) - return noError; - - QString value = binding->valueAsString(compilationUnit.data()); - QMetaProperty p = propertyCache->firstCppMetaObject()->property(property->coreIndex()); - bool ok; - if (p.isFlagType()) { - p.enumerator().keysToValue(value.toUtf8().constData(), &ok); - } else - p.enumerator().keyToValue(value.toUtf8().constData(), &ok); - - if (!ok) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: unknown enumeration")); - } - return noError; - } - - switch (property->propType()) { - case QMetaType::QVariant: - break; - case QVariant::String: { - if (!binding->evaluatesToString()) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: string expected")); - } - } - break; - case QVariant::StringList: { - if (!binding->evaluatesToString()) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: string or string list expected")); - } - } - break; - case QVariant::ByteArray: { - if (binding->type != QV4::CompiledData::Binding::Type_String) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: byte array expected")); - } - } - break; - case QVariant::Url: { - if (binding->type != QV4::CompiledData::Binding::Type_String) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: url expected")); - } - } - break; - case QVariant::UInt: { - if (binding->type == QV4::CompiledData::Binding::Type_Number) { - double d = binding->valueAsNumber(compilationUnit->constants); - if (double(uint(d)) == d) - return noError; - } - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: unsigned int expected")); - } - break; - case QVariant::Int: { - if (binding->type == QV4::CompiledData::Binding::Type_Number) { - double d = binding->valueAsNumber(compilationUnit->constants); - if (double(int(d)) == d) - return noError; - } - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: int expected")); - } - break; - case QMetaType::Float: { - if (binding->type != QV4::CompiledData::Binding::Type_Number) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: number expected")); - } - } - break; - case QVariant::Double: { - if (binding->type != QV4::CompiledData::Binding::Type_Number) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: number expected")); - } - } - break; - case QVariant::Color: { - bool ok = false; - QQmlStringConverters::rgbaFromString(binding->valueAsString(compilationUnit.data()), &ok); - if (!ok) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: color expected")); - } - } - break; -#if QT_CONFIG(datestring) - case QVariant::Date: { - bool ok = false; - QQmlStringConverters::dateFromString(binding->valueAsString(compilationUnit.data()), &ok); - if (!ok) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: date expected")); - } - } - break; - case QVariant::Time: { - bool ok = false; - QQmlStringConverters::timeFromString(binding->valueAsString(compilationUnit.data()), &ok); - if (!ok) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: time expected")); - } - } - break; - case QVariant::DateTime: { - bool ok = false; - QQmlStringConverters::dateTimeFromString(binding->valueAsString(compilationUnit.data()), &ok); - if (!ok) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: datetime expected")); - } - } - break; -#endif // datestring - case QVariant::Point: { - bool ok = false; - QQmlStringConverters::pointFFromString(binding->valueAsString(compilationUnit.data()), &ok); - if (!ok) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: point expected")); - } - } - break; - case QVariant::PointF: { - bool ok = false; - QQmlStringConverters::pointFFromString(binding->valueAsString(compilationUnit.data()), &ok); - if (!ok) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: point expected")); - } - } - break; - case QVariant::Size: { - bool ok = false; - QQmlStringConverters::sizeFFromString(binding->valueAsString(compilationUnit.data()), &ok); - if (!ok) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: size expected")); - } - } - break; - case QVariant::SizeF: { - bool ok = false; - QQmlStringConverters::sizeFFromString(binding->valueAsString(compilationUnit.data()), &ok); - if (!ok) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: size expected")); - } - } - break; - case QVariant::Rect: { - bool ok = false; - QQmlStringConverters::rectFFromString(binding->valueAsString(compilationUnit.data()), &ok); - if (!ok) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: rect expected")); - } - } - break; - case QVariant::RectF: { - bool ok = false; - QQmlStringConverters::rectFFromString(binding->valueAsString(compilationUnit.data()), &ok); - if (!ok) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: point expected")); - } - } - break; - case QVariant::Bool: { - if (binding->type != QV4::CompiledData::Binding::Type_Boolean) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: boolean expected")); - } - } - break; - case QVariant::Vector2D: { - struct { - float xp; - float yp; - } vec; - if (!QQmlStringConverters::createFromString(QMetaType::QVector2D, binding->valueAsString(compilationUnit.data()), &vec, sizeof(vec))) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: 2D vector expected")); - } - } - break; - case QVariant::Vector3D: { - struct { - float xp; - float yp; - float zy; - } vec; - if (!QQmlStringConverters::createFromString(QMetaType::QVector3D, binding->valueAsString(compilationUnit.data()), &vec, sizeof(vec))) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: 3D vector expected")); - } - } - break; - case QVariant::Vector4D: { - struct { - float xp; - float yp; - float zy; - float wp; - } vec; - if (!QQmlStringConverters::createFromString(QMetaType::QVector4D, binding->valueAsString(compilationUnit.data()), &vec, sizeof(vec))) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: 4D vector expected")); - } - } - break; - case QVariant::Quaternion: { - struct { - float wp; - float xp; - float yp; - float zp; - } vec; - if (!QQmlStringConverters::createFromString(QMetaType::QQuaternion, binding->valueAsString(compilationUnit.data()), &vec, sizeof(vec))) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: quaternion expected")); - } - } - break; - case QVariant::RegExp: - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: regular expression expected; use /pattern/ syntax")); - default: { - // generate single literal value assignment to a list property if required - if (property->propType() == qMetaTypeId<QList<qreal> >()) { - if (binding->type != QV4::CompiledData::Binding::Type_Number) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: number or array of numbers expected")); - } - break; - } else if (property->propType() == qMetaTypeId<QList<int> >()) { - bool ok = (binding->type == QV4::CompiledData::Binding::Type_Number); - if (ok) { - double n = binding->valueAsNumber(compilationUnit->constants); - if (double(int(n)) != n) - ok = false; - } - if (!ok) - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: int or array of ints expected")); - break; - } else if (property->propType() == qMetaTypeId<QList<bool> >()) { - if (binding->type != QV4::CompiledData::Binding::Type_Boolean) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: bool or array of bools expected")); - } - break; - } else if (property->propType() == qMetaTypeId<QList<QUrl> >()) { - if (binding->type != QV4::CompiledData::Binding::Type_String) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: url or array of urls expected")); - } - break; - } else if (property->propType() == qMetaTypeId<QList<QString> >()) { - if (!binding->evaluatesToString()) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: string or array of strings expected")); - } - break; - } else if (property->propType() == qMetaTypeId<QJSValue>()) { - break; - } else if (property->propType() == qMetaTypeId<QQmlScriptString>()) { - break; - } - - // otherwise, try a custom type assignment - QQmlMetaType::StringConverter converter = QQmlMetaType::customStringConverter(property->propType()); - if (!converter) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: unsupported type \"%1\"").arg(QString::fromLatin1(QMetaType::typeName(property->propType())))); - } - } - break; - } - return noError; -} - -/*! - Returns true if from can be assigned to a (QObject) property of type - to. -*/ -bool QQmlPropertyValidator::canCoerce(int to, QQmlPropertyCache *fromMo) const -{ - QQmlPropertyCache *toMo = enginePrivate->rawPropertyCacheForType(to); - - while (fromMo) { - if (fromMo == toMo) - return true; - fromMo = fromMo->parent(); - } - return false; -} - -QVector<QQmlCompileError> QQmlPropertyValidator::recordError(const QV4::CompiledData::Location &location, const QString &description) const -{ - QVector<QQmlCompileError> errors; - errors.append(QQmlCompileError(location, description)); - return errors; -} - -QVector<QQmlCompileError> QQmlPropertyValidator::recordError(const QQmlCompileError &error) const -{ - QVector<QQmlCompileError> errors; - errors.append(error); - return errors; -} - -QQmlCompileError QQmlPropertyValidator::validateObjectBinding(QQmlPropertyData *property, const QString &propertyName, const QV4::CompiledData::Binding *binding) const -{ - QQmlCompileError noError; - - if (binding->flags & QV4::CompiledData::Binding::IsOnAssignment) { - Q_ASSERT(binding->type == QV4::CompiledData::Binding::Type_Object); - - bool isValueSource = false; - bool isPropertyInterceptor = false; - - const QV4::CompiledData::Object *targetObject = compilationUnit->objectAt(binding->value.objectIndex); - if (auto *typeRef = resolvedType(targetObject->inheritedTypeNameIndex)) { - QQmlRefPointer<QQmlPropertyCache> cache = typeRef->createPropertyCache(QQmlEnginePrivate::get(enginePrivate)); - const QMetaObject *mo = cache->firstCppMetaObject(); - QQmlType qmlType; - while (mo && !qmlType.isValid()) { - qmlType = QQmlMetaType::qmlType(mo); - mo = mo->superClass(); - } - Q_ASSERT(qmlType.isValid()); - - isValueSource = qmlType.propertyValueSourceCast() != -1; - isPropertyInterceptor = qmlType.propertyValueInterceptorCast() != -1; - } - - if (!isValueSource && !isPropertyInterceptor) { - return QQmlCompileError(binding->valueLocation, tr("\"%1\" cannot operate on \"%2\"").arg(stringAt(targetObject->inheritedTypeNameIndex)).arg(propertyName)); - } - - return noError; - } - - if (QQmlMetaType::isInterface(property->propType())) { - // Can only check at instantiation time if the created sub-object successfully casts to the - // target interface. - return noError; - } else if (property->propType() == QMetaType::QVariant || property->propType() == qMetaTypeId<QJSValue>()) { - // We can convert everything to QVariant :) - return noError; - } else if (property->isQList()) { - const int listType = enginePrivate->listType(property->propType()); - if (!QQmlMetaType::isInterface(listType)) { - QQmlPropertyCache *source = propertyCaches.at(binding->value.objectIndex); - if (!canCoerce(listType, source)) { - return QQmlCompileError(binding->valueLocation, tr("Cannot assign object to list property \"%1\"").arg(propertyName)); - } - } - return noError; - } else if (compilationUnit->objectAt(binding->value.objectIndex)->flags & QV4::CompiledData::Object::IsComponent) { - return noError; - } else if (binding->flags & QV4::CompiledData::Binding::IsSignalHandlerObject && property->isFunction()) { - return noError; - } else if (QQmlValueTypeFactory::isValueType(property->propType())) { - return QQmlCompileError(binding->location, tr("Unexpected object assignment for property \"%1\"").arg(propertyName)); - } else if (property->propType() == qMetaTypeId<QQmlScriptString>()) { - return QQmlCompileError(binding->valueLocation, tr("Invalid property assignment: script expected")); - } else { - // We want to use the raw metaObject here as the raw metaobject is the - // actual property type before we applied any extensions that might - // effect the properties on the type, but don't effect assignability - // Using -1 for the minor version ensures that we get the raw metaObject. - QQmlPropertyCache *propertyMetaObject = enginePrivate->rawPropertyCacheForType(property->propType(), -1); - - // Will be true if the assigned type inherits propertyMetaObject - bool isAssignable = false; - // Determine isAssignable value - if (propertyMetaObject) { - QQmlPropertyCache *c = propertyCaches.at(binding->value.objectIndex); - while (c && !isAssignable) { - isAssignable |= c == propertyMetaObject; - c = c->parent(); - } - } - - if (!isAssignable) { - return QQmlCompileError(binding->valueLocation, tr("Cannot assign object of type \"%1\" to property of type \"%2\" as the former is neither the same as the latter nor a sub-class of it.") - .arg(stringAt(compilationUnit->objectAt(binding->value.objectIndex)->inheritedTypeNameIndex)).arg(QLatin1String(QMetaType::typeName(property->propType())))); - } - } - return noError; -} - -QT_END_NAMESPACE |