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();
}
/*!
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();
}
/*!
Returns true if there is at least one item ahead of the iterator
(i.e. the iterator is \e not at the back of the property sequence);
otherwise returns false.
\sa next(), hasPrevious()
*/
bool QScriptValueIterator::hasNext() const
{
Q_D(const QScriptValueIterator);
if ((d->nextIndex != -1) && d->forward)
return true;
if (!d->object.isObject())
return false;
QScriptValueImpl v = QScriptValuePrivate::valueOf(d->object);
int i = d->index;
if ((i != -1) && !d->forward)
--i;
int count = v.memberCount();
bool found = false;
while (! found && ++i < count) {
QScript::Member member;
v.member(i, &member);
found = member.isValid();
if (found && (member.isObjectProperty() || v.isArray())) {
QScriptValueImpl vv;
v.get(member, &vv);
found = vv.isValid();
}
}
QScriptValueIteratorPrivate *that;
that = const_cast<QScriptValueIteratorPrivate*>(d);
if (found) {
that->forward = true;
that->nextIndex = i;
return true;
} else {
that->nextIndex = -1;
return false;
}
}
QDebug &operator<<(QDebug &d, const QScriptValueImpl &object)
{
d.nospace() << "QScriptValue(";
switch (object.type()) {
case QScript::InvalidType:
d.nospace() << "Invalid)";
return d;
case QScript::BooleanType:
d.nospace() << "bool=" << object.toBoolean();
break;
case QScript::IntegerType:
d.nospace() << "int=" << object.toInt32();
break;
case QScript::NumberType:
d.nospace() << "qsreal=" << object.toNumber();
break;
case QScript::LazyStringType:
case QScript::StringType:
d.nospace() << "string=" << object.toString();
break;
case QScript::ReferenceType:
d.nospace() << "reference";
break;
case QScript::NullType:
d.nospace() << "null";
break;
case QScript::UndefinedType:
d.nospace() << "undefined";
break;
case QScript::PointerType:
d.nospace() << "pointer";
break;
case QScript::ObjectType:
d.nospace() << object.classInfo()->name() << ",{";
QScriptObject *od = object.objectValue();
for (int i=0; i<od->memberCount(); ++i) {
if (i != 0)
d << ",";
QScript::Member m;
od->member(i, &m);
if (m.isValid() && m.isObjectProperty()) {
d << object.engine()->toString(m.nameId());
QScriptValueImpl o;
od->get(m, &o);
d.nospace() << QLatin1String(":")
<< (o.classInfo()
? o.classInfo()->name()
: QLatin1String("?"));
}
}
d.nospace() << "} scope={";
QScriptValueImpl scope = object.scope();
while (scope.isValid()) {
Q_ASSERT(scope.isObject());
d.nospace() << " " << scope.objectValue();
scope = scope.scope();
}
d.nospace() << "}";
break;
}
d << ")";
return d;
}
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);
}