Ejemplo n.º 1
0
void Enumeration::Instance::next(QScriptContextPrivate *context, QScriptValueImpl *result)
{
    QScriptEnginePrivate *eng = context->engine();
    Q_ASSERT(it != 0);
    it->next();
    QScript::Member *member = it->member();
    if (member->isObjectProperty() || member->nameId())
        eng->newNameId(result, member->nameId());

    else if (member->isNativeProperty() && !member->nameId())
        *result = QScriptValueImpl(uint(member->id()));

    else
        *result = eng->undefinedValue();
}
Ejemplo n.º 2
0
/*!
  Returns the name of the last property that was jumped over using
  next() or previous().

  \sa value(), flags()
*/
QString QScriptValueIterator::name() const
{
    Q_D(const QScriptValueIterator);
    if (d->index == -1)
        return QString();

    QScript::Member member;
    QScriptValuePrivate::valueOf(d->object).member(d->index, &member);

    if (member.isObjectProperty() || member.nameId())
        return member.nameId()->s;

    else if (member.isNativeProperty())
        return QScriptEnginePrivate::toString(member.id());

    return QString();
}
bool QScriptValueIteratorImpl::acceptsMember(const QScriptValueImpl &o,
                                             const QScript::Member &m) const
{
    if (!m.isValid() || (!m_ignoresDontEnum && m.dontEnum())
        || (m.isSetter() && !m.isGetter())) {
        return false;
    }

    if (!m_enumerateProto || QScriptEnginePrivate::strictlyEquals(o, m_frontObject))
        return true;

    // make sure it's not a shadowed property
    QScript::Member dummy;
    QScriptValueImpl base;
    QScriptNameIdImpl *id;
    if (m.nameId()) {
        id = m.nameId();
    } else {
        QScriptEnginePrivate *eng_p = m_frontObject.engine();
        id = eng_p->nameId(QScript::numberToString(m.id()));
    }
    m_frontObject.resolve(id, &dummy, &base, QScriptValue::ResolvePrototype, QScript::Read);
    return QScriptEnginePrivate::strictlyEquals(base, o);
}
Ejemplo n.º 4
0
void QScriptValueImpl::setProperty(QScriptNameIdImpl *nameId,
                                   const QScriptValueImpl &value,
                                   const QScriptValue::PropertyFlags &flags)
{
    if (!isObject())
        return;

    QScriptValueImpl base;
    QScript::Member member;

    QScriptValue::ResolveFlags mode = QScriptValue::ResolveLocal;
    // if we are not setting a setter or getter, look in prototype too
    if (!(flags & (QScriptValue::PropertyGetter | QScriptValue::PropertySetter)))
        mode |= QScriptValue::ResolvePrototype;

    if (resolve(nameId, &member, &base, mode, QScript::ReadWrite)) {
        // we resolved an existing property with that name
        if (flags & (QScriptValue::PropertyGetter | QScriptValue::PropertySetter)) {
            // setting the getter or setter of a property in this object
            if (member.isNativeProperty()) {
                if (value.isValid()) {
                    qWarning("QScriptValue::setProperty() failed: "
                             "cannot set getter or setter of native property `%s'",
                             qPrintable(nameId->s));
                }
                return;
            }
            if (member.isSetter()) {
                // the property we resolved is a setter
                if (!(flags & QScriptValue::PropertySetter) && !member.isGetter()) {
                    // find the getter, if not, create one
                    if (!m_object_value->findGetter(&member)) {
                        if (!value.isValid())
                            return; // don't create property for invalid value
                        createMember(nameId, &member, flags);
                    }
                }
            } else if (member.isGetter()) {
                // the property we resolved is a getter
                if (!(flags & QScriptValue::PropertyGetter)) {
                    // find the setter, if not, create one
                    if (!m_object_value->findSetter(&member)) {
                        if (!value.isValid())
                            return; // don't create property for invalid value
                        createMember(nameId, &member, flags);
                    }
                }
            } else {
                // the property is a normal property -- change the flags
                uint newFlags = flags & ~QScript::Member::InternalRange;
                newFlags |= QScript::Member::ObjectProperty;
                member.resetFlags(newFlags);
                base.m_object_value->m_members[member.id()].resetFlags(newFlags);
            }
            Q_ASSERT(member.isValid());
            if (!value.isValid()) {
                // remove the property
                removeMember(member);
                return;
            }
        } else {
            // setting the value
            if (member.isGetterOrSetter()) {
                // call the setter
                QScriptValueImpl setter;
                if (member.isObjectProperty() && !member.isSetter()) {
                    if (!base.m_object_value->findSetter(&member)) {
                        qWarning("QScriptValue::setProperty() failed: "
                                 "property '%s' has a getter but no setter",
                                 qPrintable(nameId->s));
                        return;
                    }
                }
                base.get(member, &setter);
                setter.call(*this, QScriptValueImplList() << value);
                return;
            } else {
                if (base.m_object_value != m_object_value) {
                    if (!value.isValid())
                        return; // don't create property for invalid value
                    createMember(nameId, &member, flags);
                    base = *this;
                } else {
                    if (!value.isValid()) {
                        // remove the property
                        removeMember(member);
                        return;
                    }
                }
                if (flags != QScriptValue::KeepExistingFlags) {
                    // change flags
                    if (member.isNativeProperty()) {
                        qWarning("QScriptValue::setProperty(%s): "
                                 "cannot change flags of a native property",
                                 qPrintable(nameId->s));
                    } else {
                        uint newFlags = member.flags() & QScript::Member::InternalRange;
                        newFlags |= flags & ~QScript::Member::InternalRange;
                        base.m_object_value->m_members[member.id()].resetFlags(newFlags);
                    }
                }
            }
        }
    } else {
        // property does not exist
        if (!value.isValid())
            return; // don't create property for invalid value
        createMember(nameId, &member, flags & ~QScript::Member::InternalRange);
        base = *this;
    }

    base.put(member, value);
}