bool
WrapperOwner::getPropertyKeys(JSContext* cx, HandleObject proxy, uint32_t flags, AutoIdVector& props)
{
ObjectId objId = idOf(proxy);
ReturnStatus status;
InfallibleTArray<JSIDVariant> ids;
if (!SendGetPropertyKeys(objId, flags, &status, &ids))
return ipcfail(cx);
LOG_STACK();
if (!ok(cx, status))
return false;
for (size_t i = 0; i < ids.Length(); i++) {
RootedId id(cx);
if (!fromJSIDVariant(cx, ids[i], &id))
return false;
if (!props.append(id))
return false;
}
return true;
}
// ES8 rev 0c1bd3004329336774cbc90de727cd0cf5f11e93
// 7.3.17 CreateListFromArrayLike with elementTypes fixed to symbol/string.
static bool
CreateFilteredListFromArrayLike(JSContext* cx, HandleValue v, AutoIdVector& props)
{
// Step 2.
RootedObject obj(cx, NonNullObjectWithName(cx, "return value of the ownKeys trap", v));
if (!obj)
return false;
// Step 3.
uint32_t len;
if (!GetLengthProperty(cx, obj, &len))
return false;
// Steps 4-6.
RootedValue next(cx);
RootedId id(cx);
uint32_t index = 0;
while (index < len) {
// Steps 6a-b.
if (!GetElement(cx, obj, obj, index, &next))
return false;
// Step 6c.
if (!next.isString() && !next.isSymbol()) {
JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_OWNKEYS_STR_SYM);
return false;
}
if (!ValueToId<CanGC>(cx, next, &id))
return false;
// Step 6d.
if (!props.append(id))
return false;
// Step 6e.
index++;
}
// Step 7.
return true;
}
// ES6 7.3.17 But elementTypes is is fixed to symbol/string.
static bool
CreateFilteredListFromArrayLike(JSContext* cx, HandleValue v, AutoIdVector& props)
{
// Step 3.
RootedObject obj(cx, NonNullObject(cx, v));
if (!obj)
return false;
// Steps 4-5.
uint32_t len;
if (!GetLengthProperty(cx, obj, &len))
return false;
// Steps 6-8.
RootedValue next(cx);
RootedId id(cx);
for (uint32_t index = 0; index < len; index++) {
if (!GetElement(cx, obj, obj, index, &next))
return false;
if (!next.isString() && !next.isSymbol()) {
JS_ReportErrorNumber(cx, GetErrorMessage, nullptr, JSMSG_ONWKEYS_STR_SYM);
return false;
}
// Unobservable for strings/symbols.
if (!ValueToId<CanGC>(cx, next, &id))
return false;
if (!props.append(id))
return false;
}
// Step 9.
return true;
}
// This function is shared between ownPropertyKeys, enumerate, and
// getOwnEnumerablePropertyKeys.
static bool
ArrayToIdVector(JSContext *cx, HandleObject proxy, HandleObject target, HandleValue v,
AutoIdVector &props, unsigned flags, JSAtom *trapName_)
{
MOZ_ASSERT(v.isObject());
RootedObject array(cx, &v.toObject());
RootedAtom trapName(cx, trapName_);
// steps g-h
uint32_t n;
if (!GetLengthProperty(cx, array, &n))
return false;
// steps i-k
for (uint32_t i = 0; i < n; ++i) {
// step i
RootedValue v(cx);
if (!GetElement(cx, array, array, i, &v))
return false;
// step ii
RootedId id(cx);
if (!ValueToId<CanGC>(cx, v, &id))
return false;
// step iii
for (uint32_t j = 0; j < i; ++j) {
if (props[j].get() == id) {
ReportInvalidTrapResult(cx, proxy, trapName);
return false;
}
}
// step iv
bool isFixed;
if (!HasOwnProperty(cx, target, id, &isFixed))
return false;
// step v
bool extensible;
if (!IsExtensible(cx, target, &extensible))
return false;
if (!extensible && !isFixed) {
JS_ReportErrorNumber(cx, GetErrorMessage, nullptr, JSMSG_CANT_REPORT_NEW);
return false;
}
// step vi
if (!props.append(id))
return false;
}
// step l
AutoIdVector ownProps(cx);
if (!GetPropertyKeys(cx, target, flags, &ownProps))
return false;
// step m
for (size_t i = 0; i < ownProps.length(); ++i) {
RootedId id(cx, ownProps[i]);
bool found = false;
for (size_t j = 0; j < props.length(); ++j) {
if (props[j].get() == id) {
found = true;
break;
}
}
if (found)
continue;
// step i
bool sealed;
if (!IsSealed(cx, target, id, &sealed))
return false;
if (sealed) {
JS_ReportErrorNumber(cx, GetErrorMessage, nullptr, JSMSG_CANT_SKIP_NC);
return false;
}
// step ii
bool isFixed;
if (!HasOwnProperty(cx, target, id, &isFixed))
return false;
// step iii
bool extensible;
if (!IsExtensible(cx, target, &extensible))
return false;
if (!extensible && isFixed) {
JS_ReportErrorNumber(cx, GetErrorMessage, nullptr, JSMSG_CANT_REPORT_E_AS_NE);
return false;
}
}
// step n
return true;
}
