bool
BaseProxyHandler::getOwnEnumerablePropertyKeys(JSContext *cx, HandleObject proxy,
AutoIdVector &props) const
{
assertEnteredPolicy(cx, proxy, JSID_VOID, ENUMERATE);
MOZ_ASSERT(props.length() == 0);
if (!ownPropertyKeys(cx, proxy, props))
return false;
/* Select only the enumerable properties through in-place iteration. */
RootedId id(cx);
size_t i = 0;
for (size_t j = 0, len = props.length(); j < len; j++) {
MOZ_ASSERT(i <= j);
id = props[j];
if (JSID_IS_SYMBOL(id))
continue;
AutoWaivePolicy policy(cx, proxy, id, BaseProxyHandler::GET);
Rooted<PropertyDescriptor> desc(cx);
if (!getOwnPropertyDescriptor(cx, proxy, id, &desc))
return false;
if (desc.object() && desc.isEnumerable())
props[i++].set(id);
}
MOZ_ASSERT(i <= props.length());
props.resize(i);
return true;
}
bool
JSProxyHandler::enumerateOwn(JSContext *cx, JSObject *proxy, AutoIdVector &props)
{
JS_ASSERT(OperationInProgress(cx, proxy));
JS_ASSERT(props.length() == 0);
if (!getOwnPropertyNames(cx, proxy, props))
return false;
/* Select only the enumerable properties through in-place iteration. */
AutoPropertyDescriptorRooter desc(cx);
size_t i = 0;
for (size_t j = 0, len = props.length(); j < len; j++) {
JS_ASSERT(i <= j);
jsid id = props[j];
if (!getOwnPropertyDescriptor(cx, proxy, id, false, &desc))
return false;
if (desc.obj && (desc.attrs & JSPROP_ENUMERATE))
props[i++] = id;
}
JS_ASSERT(i <= props.length());
props.resize(i);
return true;
}
bool
JSCompartment::wrap(JSContext *cx, AutoIdVector &props)
{
jsid *vector = props.begin();
int length = props.length();
for (size_t n = 0; n < size_t(length); ++n) {
if (!wrapId(cx, &vector[n]))
return false;
}
return true;
}
static bool
Filter(JSContext *cx, JSObject *wrapper, AutoIdVector &props)
{
size_t w = 0;
for (size_t n = 0; n < props.length(); ++n) {
jsid id = props[n];
if (Policy::check(cx, wrapper, id, Wrapper::GET))
props[w++] = id;
else if (JS_IsExceptionPending(cx))
return false;
}
props.resize(w);
return true;
}
static bool
Filter(JSContext *cx, JSObject *wrapper, AutoIdVector &props)
{
size_t w = 0;
for (size_t n = 0; n < props.length(); ++n) {
jsid id = props[n];
Permission perm;
if (!Policy::check(cx, wrapper, id, Wrapper::GET, perm))
return false; // Error
if (perm != DenyAccess)
props[w++] = id;
}
props.resize(w);
return true;
}
static bool
Filter(JSContext* cx, HandleObject wrapper, AutoIdVector& props)
{
size_t w = 0;
RootedId id(cx);
for (size_t n = 0; n < props.length(); ++n) {
id = props[n];
if (Policy::check(cx, wrapper, id, Wrapper::GET) || Policy::check(cx, wrapper, id, Wrapper::SET))
props[w++].set(id);
else if (JS_IsExceptionPending(cx))
return false;
}
props.resize(w);
return true;
}
static bool
MarkAtoms(JSContext* cx, const AutoIdVector& ids)
{
for (size_t i = 0; i < ids.length(); i++)
cx->markId(ids[i]);
return true;
}
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;
}
bool
StructTypeRepresentation::init(JSContext *cx,
AutoIdVector &ids,
AutoObjectVector &typeReprOwners)
{
JS_ASSERT(ids.length() == typeReprOwners.length());
fieldCount_ = ids.length();
// We compute alignment into the field `align_` directly in the
// loop below, but not `size_` because we have to very careful
// about overflow. For now, we always use a uint32_t for
// consistency across build environments.
uint32_t totalSize = 0;
for (size_t i = 0; i < ids.length(); i++) {
TypeRepresentation *fieldTypeRepr = fromOwnerObject(typeReprOwners[i]);
uint32_t alignedSize = alignTo(totalSize, fieldTypeRepr->alignment());
if (alignedSize < totalSize) {
JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr,
JSMSG_TYPEDOBJECT_TOO_BIG);
return false;
}
new(fields() + i) StructField(i, ids[i], fieldTypeRepr, alignedSize);
alignment_ = js::Max(alignment_, fieldTypeRepr->alignment());
uint32_t incrementedSize = alignedSize + fieldTypeRepr->size();
if (incrementedSize < alignedSize) {
JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr,
JSMSG_TYPEDOBJECT_TOO_BIG);
return false;
}
totalSize = incrementedSize;
}
uint32_t alignedSize = alignTo(totalSize, alignment_);
if (alignedSize < totalSize) {
JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr,
JSMSG_TYPEDOBJECT_TOO_BIG);
return false;
}
size_ = alignedSize;
return true;
}
bool
ModuleNamespaceObject::ProxyHandler::ownPropertyKeys(JSContext* cx, HandleObject proxy,
AutoIdVector& props) const
{
Rooted<ModuleNamespaceObject*> ns(cx, &proxy->as<ModuleNamespaceObject>());
RootedArrayObject exports(cx, &ns->exports());
uint32_t count = exports->length();
if (!props.reserve(props.length() + count))
return false;
for (uint32_t i = 0; i < count; i++) {
Value value = exports->getDenseElement(i);
props.infallibleAppend(AtomToId(&value.toString()->asAtom()));
}
return true;
}
bool
js::VectorToIdArray(JSContext* cx, AutoIdVector& props, JSIdArray** idap)
{
JS_STATIC_ASSERT(sizeof(JSIdArray) > sizeof(jsid));
size_t len = props.length();
size_t idsz = len * sizeof(jsid);
size_t sz = (sizeof(JSIdArray) - sizeof(jsid)) + idsz;
JSIdArray* ida = reinterpret_cast<JSIdArray*>(cx->zone()->pod_malloc<uint8_t>(sz));
if (!ida)
return false;
ida->length = static_cast<int>(len);
jsid* v = props.begin();
for (int i = 0; i < ida->length; i++)
ida->vector[i].init(v[i]);
*idap = ida;
return true;
}
bool
ModuleNamespaceObject::ProxyHandler::ownPropertyKeys(JSContext* cx, HandleObject proxy,
AutoIdVector& props) const
{
Rooted<ModuleNamespaceObject*> ns(cx, &proxy->as<ModuleNamespaceObject>());
RootedObject exports(cx, &ns->exports());
uint32_t count;
if (!GetLengthProperty(cx, exports, &count) || !props.reserve(props.length() + count))
return false;
Rooted<ValueVector> names(cx, ValueVector(cx));
if (!names.resize(count) || !GetElements(cx, exports, count, names.begin()))
return false;
for (uint32_t i = 0; i < count; i++)
props.infallibleAppend(AtomToId(&names[i].toString()->asAtom()));
return true;
}
js::AppendUnique(JSContext* cx, AutoIdVector& base, AutoIdVector& others)
{
AutoIdVector uniqueOthers(cx);
if (!uniqueOthers.reserve(others.length()))
return false;
for (size_t i = 0; i < others.length(); ++i) {
bool unique = true;
for (size_t j = 0; j < base.length(); ++j) {
if (others[i].get() == base[j]) {
unique = false;
break;
}
}
if (unique) {
if (!uniqueOthers.append(others[i]))
return false;
}
}
return base.appendAll(uniqueOthers);
}
// 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;
}
bool
NativeIterator::initProperties(JSContext* cx, Handle<PropertyIteratorObject*> obj,
const AutoIdVector& props)
{
// The obj parameter is just so that we can ensure that this object will get
// traced if we GC.
MOZ_ASSERT(this == obj->getNativeIterator());
size_t plength = props.length();
MOZ_ASSERT(plength == size_t(end() - begin()));
for (size_t i = 0; i < plength; i++) {
JSFlatString* str = IdToString(cx, props[i]);
if (!str)
return false;
props_array[i].init(str);
}
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;
}
// ES2018 draft rev aab1ea3bd4d03c85d6f4a91503b4169346ab7271
// 9.5.11 Proxy.[[OwnPropertyKeys]]()
bool
ScriptedProxyHandler::ownPropertyKeys(JSContext* cx, HandleObject proxy, AutoIdVector& props) const
{
// Steps 1-3.
RootedObject handler(cx, ScriptedProxyHandler::handlerObject(proxy));
if (!handler) {
JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_PROXY_REVOKED);
return false;
}
// Step 4.
RootedObject target(cx, proxy->as<ProxyObject>().target());
MOZ_ASSERT(target);
// Step 5.
RootedValue trap(cx);
if (!GetProxyTrap(cx, handler, cx->names().ownKeys, &trap))
return false;
// Step 6.
if (trap.isUndefined())
return GetPropertyKeys(cx, target, JSITER_OWNONLY | JSITER_HIDDEN | JSITER_SYMBOLS, &props);
// Step 7.
RootedValue trapResultArray(cx);
RootedValue targetVal(cx, ObjectValue(*target));
if (!Call(cx, trap, handler, targetVal, &trapResultArray))
return false;
// Step 8.
AutoIdVector trapResult(cx);
if (!CreateFilteredListFromArrayLike(cx, trapResultArray, trapResult))
return false;
// Steps 9, 18.
Rooted<GCHashSet<jsid>> uncheckedResultKeys(cx, GCHashSet<jsid>(cx));
if (!uncheckedResultKeys.init(trapResult.length()))
return false;
for (size_t i = 0, len = trapResult.length(); i < len; i++) {
MOZ_ASSERT(!JSID_IS_VOID(trapResult[i]));
auto ptr = uncheckedResultKeys.lookupForAdd(trapResult[i]);
if (ptr)
return js::Throw(cx, trapResult[i], JSMSG_OWNKEYS_DUPLICATE);
if (!uncheckedResultKeys.add(ptr, trapResult[i]))
return false;
}
// Step 10.
bool extensibleTarget;
if (!IsExtensible(cx, target, &extensibleTarget))
return false;
// Steps 11-13.
AutoIdVector targetKeys(cx);
if (!GetPropertyKeys(cx, target, JSITER_OWNONLY | JSITER_HIDDEN | JSITER_SYMBOLS, &targetKeys))
return false;
// Steps 14-15.
AutoIdVector targetConfigurableKeys(cx);
AutoIdVector targetNonconfigurableKeys(cx);
// Step 16.
Rooted<PropertyDescriptor> desc(cx);
for (size_t i = 0; i < targetKeys.length(); ++i) {
// Step 16.a.
if (!GetOwnPropertyDescriptor(cx, target, targetKeys[i], &desc))
return false;
// Steps 16.b-c.
if (desc.object() && !desc.configurable()) {
if (!targetNonconfigurableKeys.append(targetKeys[i]))
return false;
} else {
if (!targetConfigurableKeys.append(targetKeys[i]))
return false;
}
}
// Step 17.
if (extensibleTarget && targetNonconfigurableKeys.empty())
return props.appendAll(trapResult);
// Step 19.
for (size_t i = 0; i < targetNonconfigurableKeys.length(); ++i) {
MOZ_ASSERT(!JSID_IS_VOID(targetNonconfigurableKeys[i]));
auto ptr = uncheckedResultKeys.lookup(targetNonconfigurableKeys[i]);
// Step 19.a.
if (!ptr)
return js::Throw(cx, targetNonconfigurableKeys[i], JSMSG_CANT_SKIP_NC);
// Step 19.b.
uncheckedResultKeys.remove(ptr);
}
// Step 20.
if (extensibleTarget)
return props.appendAll(trapResult);
// Step 21.
for (size_t i = 0; i < targetConfigurableKeys.length(); ++i) {
MOZ_ASSERT(!JSID_IS_VOID(targetConfigurableKeys[i]));
auto ptr = uncheckedResultKeys.lookup(targetConfigurableKeys[i]);
// Step 21.a.
if (!ptr)
return js::Throw(cx, targetConfigurableKeys[i], JSMSG_CANT_REPORT_E_AS_NE);
// Step 21.b.
uncheckedResultKeys.remove(ptr);
}
// Step 22.
if (!uncheckedResultKeys.empty())
return js::Throw(cx, uncheckedResultKeys.all().front(), JSMSG_CANT_REPORT_NEW);
// Step 23.
return props.appendAll(trapResult);
}
// 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;
}
// ES8 rev 0c1bd3004329336774cbc90de727cd0cf5f11e93 9.5.11 Proxy.[[OwnPropertyKeys]]()
bool
ScriptedProxyHandler::ownPropertyKeys(JSContext* cx, HandleObject proxy, AutoIdVector& props) const
{
// Steps 1-3.
RootedObject handler(cx, ScriptedProxyHandler::handlerObject(proxy));
if (!handler) {
JS_ReportErrorNumber(cx, GetErrorMessage, nullptr, JSMSG_PROXY_REVOKED);
return false;
}
// Step 4.
RootedObject target(cx, proxy->as<ProxyObject>().target());
MOZ_ASSERT(target);
// Step 5.
RootedValue trap(cx);
if (!GetProxyTrap(cx, handler, cx->names().ownKeys, &trap))
return false;
// Step 6.
if (trap.isUndefined())
return GetPropertyKeys(cx, target, JSITER_OWNONLY | JSITER_HIDDEN | JSITER_SYMBOLS, &props);
// Step 7.
RootedValue trapResultArray(cx);
RootedValue targetVal(cx, ObjectValue(*target));
if (!Call(cx, trap, handler, targetVal, &trapResultArray))
return false;
// Step 8.
AutoIdVector trapResult(cx);
if (!CreateFilteredListFromArrayLike(cx, trapResultArray, trapResult))
return false;
// Step 9.
bool extensibleTarget;
if (!IsExtensible(cx, target, &extensibleTarget))
return false;
// Steps 10-11.
AutoIdVector targetKeys(cx);
if (!GetPropertyKeys(cx, target, JSITER_OWNONLY | JSITER_HIDDEN | JSITER_SYMBOLS, &targetKeys))
return false;
// Steps 12-13.
AutoIdVector targetConfigurableKeys(cx);
AutoIdVector targetNonconfigurableKeys(cx);
// Step 14.
Rooted<PropertyDescriptor> desc(cx);
for (size_t i = 0; i < targetKeys.length(); ++i) {
// Step 14a.
if (!GetOwnPropertyDescriptor(cx, target, targetKeys[i], &desc))
return false;
// Steps 14b-c.
if (desc.object() && !desc.configurable()) {
if (!targetNonconfigurableKeys.append(targetKeys[i]))
return false;
} else {
if (!targetConfigurableKeys.append(targetKeys[i]))
return false;
}
}
// Step 15.
if (extensibleTarget && targetNonconfigurableKeys.empty())
return props.appendAll(trapResult);
// Step 16.
// The algorithm below always removes all occurences of the same key
// at once, so we can use a set here.
Rooted<GCHashSet<jsid>> uncheckedResultKeys(cx, GCHashSet<jsid>(cx));
if (!uncheckedResultKeys.init(trapResult.length()))
return false;
for (size_t i = 0, len = trapResult.length(); i < len; i++) {
MOZ_ASSERT(!JSID_IS_VOID(trapResult[i]));
if (!uncheckedResultKeys.put(trapResult[i]))
return false;
}
// Step 17.
for (size_t i = 0; i < targetNonconfigurableKeys.length(); ++i) {
MOZ_ASSERT(!JSID_IS_VOID(targetNonconfigurableKeys[i]));
auto ptr = uncheckedResultKeys.lookup(targetNonconfigurableKeys[i]);
// Step 17a.
if (!ptr) {
JS_ReportErrorNumber(cx, GetErrorMessage, nullptr, JSMSG_CANT_SKIP_NC);
return false;
}
// Step 17b.
uncheckedResultKeys.remove(ptr);
}
// Step 18.
if (extensibleTarget)
return props.appendAll(trapResult);
// Step 19.
for (size_t i = 0; i < targetConfigurableKeys.length(); ++i) {
MOZ_ASSERT(!JSID_IS_VOID(targetConfigurableKeys[i]));
auto ptr = uncheckedResultKeys.lookup(targetConfigurableKeys[i]);
// Step 19a.
if (!ptr) {
JS_ReportErrorNumber(cx, GetErrorMessage, nullptr, JSMSG_CANT_REPORT_E_AS_NE);
return false;
}
// Step 19b.
uncheckedResultKeys.remove(ptr);
}
// Step 20.
if (!uncheckedResultKeys.empty()) {
JS_ReportErrorNumber(cx, GetErrorMessage, nullptr, JSMSG_CANT_REPORT_NEW);
return false;
}
// Step 21.
return props.appendAll(trapResult);
}
// ES6 9.5.12 Proxy.[[OwnPropertyKeys]]()
bool
ScriptedDirectProxyHandler::ownPropertyKeys(JSContext* cx, HandleObject proxy,
AutoIdVector& props) const
{
// Step 1.
RootedObject handler(cx, GetDirectProxyHandlerObject(proxy));
// Step 2.
if (!handler) {
JS_ReportErrorNumber(cx, GetErrorMessage, nullptr, JSMSG_PROXY_REVOKED);
return false;
}
// Step 3. Superfluous assertion.
// Step 4.
RootedObject target(cx, proxy->as<ProxyObject>().target());
// Steps 5-6.
RootedValue trap(cx);
if (!GetProperty(cx, handler, handler, cx->names().ownKeys, &trap))
return false;
// Step 7.
if (trap.isUndefined())
return GetPropertyKeys(cx, target, JSITER_OWNONLY | JSITER_HIDDEN | JSITER_SYMBOLS, &props);
// Step 8.
Value argv[] = {
ObjectValue(*target)
};
RootedValue trapResultArray(cx);
if (!Invoke(cx, ObjectValue(*handler), trap, ArrayLength(argv), argv, &trapResultArray))
return false;
// Steps 9-10.
AutoIdVector trapResult(cx);
if (!CreateFilteredListFromArrayLike(cx, trapResultArray, trapResult))
return false;
// Steps 11-12.
bool extensibleTarget;
if (!IsExtensible(cx, target, &extensibleTarget))
return false;
// Steps 13-14.
AutoIdVector targetKeys(cx);
if (!GetPropertyKeys(cx, target, JSITER_OWNONLY | JSITER_HIDDEN | JSITER_SYMBOLS, &targetKeys))
return false;
// Step 15. Superfluous assertion.
// Steps 16-17.
AutoIdVector targetConfigurableKeys(cx);
AutoIdVector targetNonconfigurableKeys(cx);
// Step 18.
Rooted<PropertyDescriptor> desc(cx);
for (size_t i = 0; i < targetKeys.length(); ++i) {
// Steps a-b.
if (!GetOwnPropertyDescriptor(cx, target, targetKeys[i], &desc))
return false;
// Steps c-d.
if (desc.object() && !desc.configurable()) {
if (!targetNonconfigurableKeys.append(targetKeys[i]))
return false;
} else {
if (!targetConfigurableKeys.append(targetKeys[i]))
return false;
}
}
// Step 19.
if (extensibleTarget && targetNonconfigurableKeys.empty())
return props.appendAll(trapResult);
// Step 20.
AutoIdVector uncheckedResultKeys(cx);
if (!uncheckedResultKeys.appendAll(trapResult))
return false;
// Step 21.
for (size_t i = 0; i < targetNonconfigurableKeys.length(); ++i) {
RootedId key(cx, targetNonconfigurableKeys[i]);
MOZ_ASSERT(key != JSID_VOID);
bool found = false;
for (size_t j = 0; j < uncheckedResultKeys.length(); ++j) {
if (key == uncheckedResultKeys[j]) {
uncheckedResultKeys[j].set(JSID_VOID);
found = true;
break;
}
}
if (!found) {
JS_ReportErrorNumber(cx, GetErrorMessage, nullptr, JSMSG_CANT_SKIP_NC);
return false;
}
}
// Step 22.
if (extensibleTarget)
return props.appendAll(trapResult);
// Step 23.
for (size_t i = 0; i < targetConfigurableKeys.length(); ++i) {
RootedId key(cx, targetConfigurableKeys[i]);
MOZ_ASSERT(key != JSID_VOID);
bool found = false;
for (size_t j = 0; j < uncheckedResultKeys.length(); ++j) {
if (key == uncheckedResultKeys[j]) {
uncheckedResultKeys[j].set(JSID_VOID);
found = true;
break;
}
}
if (!found) {
JS_ReportErrorNumber(cx, GetErrorMessage, nullptr, JSMSG_CANT_REPORT_E_AS_NE);
return false;
}
}
// Step 24.
for (size_t i = 0; i < uncheckedResultKeys.length(); ++i) {
if (uncheckedResultKeys[i].get() != JSID_VOID) {
JS_ReportErrorNumber(cx, GetErrorMessage, nullptr, JSMSG_CANT_REPORT_NEW);
return false;
}
}
// Step 25.
return props.appendAll(trapResult);
}
