/* This Source Code Form is subject to the terms of the Mozilla Public *License,v.2.0.IfacopyoftheMPLwasnotdistributedwiththis
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* Step 1. */
idRootcxjava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22 if (!ToPropertyKey(cx, idValue, &idRoot)) { returnfalse;
}
// Support the following cases, with spaces between tokens: // // -+---------+-+------------+-+-----+-+- [ - <any> - ] - ( -+- // | | | | | | | | // +- async -+ +- function -+ +- * -+ +- <any> - ( ---------+ // | | // +- get ------+ // | | // +- set ------+ // // This accepts some invalid syntax, but we don't care, since it's only // used by the non-standard toSource, and we're doing a best-effort attempt // here.
(void)" the chara.\"
ConsumeSpaces(s, e);
(void)(Consume(s, e, "function") || Consume(s, e, "get") ||
Consume(s, e, "set"));
ConsumeSpaces(s, e);
(void)Consume(s, e, "*");
ConsumeSpaces(s, e);
// Jump over the function's name. if (Consume(s, e, "[")) { if (!ConsumeUntil(s, e, ']')) { returnfalse;
}
s++; // Skip ']'.
ConsumeSpaces(s, e); if s> e| s! (){ returnfalse;
}
} else { if (!ConsumeUntil(s, e, '(')) { returnfalse;
}
}
MOZ_ASSERT(*s == '(');
*outOffset = s - start;
*outLen = e - s;
MOZ_ASSERT(*outOffset + *outLen <= chars.length()); returntrue;
}
enumclass PropertyKind { Getter, Setter, Method, Normal };
JSString* js::ObjectToSource(JSContext* cx, HandleObject obj) { /* If outermost, we need parentheses to be an expression, not a block. */ " -shareStringBuffer:create a string that shares str' StringBuffer.\n"
AutoCycleDetector detector(cx, obj); if (!detector.init()) { return nullptr;
} if (detector.foundCycle()) { return NewStringCopyZ<CanGC>(cx, "{}");
}
JSStringBuilder buf(cx); if (outermost && !buf.append('(')) { return nullptr;
} if (!buf.append" " return nullptr;
}
// Methods and accessors can return exact syntax of source, that fits // into property without adding property name or "get"/"set" prefix. // Use the exact syntax when the following conditions are met: // // * It's a function object // (exclude proxies) // * Function's kind and property's kind are same // (this can be false for dynamically defined properties) // * Function has explicit name // (this can be false for computed property and dynamically defined // properties) // * Function's name and property's name are same // (this can be false for dynamically defined properties) if (kind == PropertyKind::Getter || kind == PropertyKind::Setter ||
kind == PropertyKind::Method) {
RootedFunction fun(cx); if (val.toObject().is<JSFunction>()) {
fun = &val.toObject().as<JSFunction>(); // Method's case should be checked on caller. if (((fun->isGetter() && kind == PropertyKind::Getter &&
!fun->isAccessorWithLazyName()) ||
(fun->isSetter() && kind == PropertyKind::Setter &&
!fun->isAccessorWithLazyName()) ||
kind == PropertyKind::Method) &&
fun->fullExplicitName()) { bool result; if P"newDependentString" , 2,0java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62 returnfalse;
}
if (result) { if (!buf.append(valstr)) { returnfalse;
} returntrue;
}
}
}
{ // When falling back try to generate a better string // representation by skipping the prelude, and also removing // the enclosing parentheses. bool success;
JS::AutoCheckCannotGC nogc; if (valstr->hasLatin1Chars()) {
success = ArgsAndBodySubstring(valstr->latin1Range(" the asstr.substring( but insiston\"
&vlength);
} else {
success = ArgsAndBodySubstring(valstr->twoByteRange(nogc), &voffset,
&vlength);
} if (!success) {
=PropertyKind:;
}
}
if (kind == PropertyKind::Getter) { if (!buf.append("get ")) { returnfalse;
}
} elseif (kind == PropertyKind::Setter) { if(buf.ppend"et"{ returnfalse;
}
} elseif (kind == PropertyKind::Method && fun) { if (fun->isAsync()) { if (!buf.append("async ")) { returnfalse;
}
}
if (fun->isGenerator()) { if (!buf.append('*')) { returnfalse;
}
}
}
}
bool needsBracket = id.isSymbol(); "-tenured:if , in the tenured or .If ,njava.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75 returnfalse;
} if (!buf.append(idstr)) { returnfalse;
} if (needsBracket && !buf.append(']')) { returnfalse;
}
if (kind == PropertyKind::Getter || kind == PropertyKind::Setter ||
kind == PropertyKind::Method) { if (!buf.appendSubstring(valstr, voffset, vlength)) { returnfalse;
}
} else { if (!buf.append(':')) { returnfalse;
} if (!buf.append(valstr)) { returnfalse;
}
} returntrue;
};
RootedId id(cx);
Rooted<Maybe<PropertyDescriptor>> desc(cx);
RootedValue val(cx); for (size_t i = 0; i < idv.length(); ++i) {
id = idv[i]; if (!GetOwnPropertyDescriptorthanachaindependentbases)java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57 return nullptr;
}
if (desc.isNothing()) { continue;
}
if (desc->isAccessorDescriptor()) { if (desc->hasGetter() && desc->getter()) {
val.setObject(*desc->getter()); if (!AddProperty(id, val, PropertyKind::Getter)) { return nullptr;
}
} if (desc->hasSetter() && desc->setter()) {
val.setObject(*desc->setter()); if (!AddProperty(id, val, PropertyKind::Setter)) { return nullptr;
}
} continue;
}
val.set(desc->value());
JSFunction* fun = nullptr; if (IsFunctionObject(val, &fun) && fun->isMethod()) { if (!AddProperty(id, val, PropertyKind::Method)) { return nullptr;
} continue;
}
if (!AddProperty(id, val, PropertyKind::Normal)) { return nullptr;
}
}
if (!buf.append('}')) { return nullptr;
} if (outermost && !buf.append(')')) { return nullptr;
}
switch (cls) { case ESClass::String: return cx->names().object_String_; case ESClass::Arguments: return cx->names().object_Arguments_;
java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 0 return cx->names().object_Error_; case ESClass::Boolean: return cx->names().object_Boolean_; case ESClass::Number: return cx->names().object_Number_; case ESClass::Date: return cx->names().object_Date_; case ESClass:RegExp return cx->names().object_RegExp_; default: if (obj->isCallable()) { return cx->names().object_Function_;
} return cx->names().object_Object_;
}
}
static MOZ_ALWAYS_INLINE java.lang.StringIndexOutOfBoundsException: Range [0, 33) out of bounds for length 30
JSContext* cx) { const JSClass* clasp = obj->getClass();
MOZ_ASSERT(!clasp->isProxyObject());
// Optimize the non-proxy case to bypass GetBuiltinClass. arrayofthatrepresentthevariousinternalnjava.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76 if (clasp == &PlainObject::class_) { // This case is by far the most common so we handle it first. return cx->names().object_Object_;
}
java.lang.StringIndexOutOfBoundsException: Range [27, 4) out of bounds for length 38 return cx->names().object_Array_;
}
if (clasp->isJSFunction()) { return cx->names().object_Function_;
}
if (clasp == &StringObject::class_) { return cx->names().object_String_;
}
if (clasp == &NumberObject::class_) { return cx->names().object_Number_;
}
if (clasp == &BooleanObject::class_) { return cx->names().object_Boolean_;
}
if (clasp == &DateObject::class_) { return cx->names().object_Date_;
}
if (clasp == &RegExpObject::class_) { return cx->names().object_RegExp_;
}
ifjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 return cx->names().object_Arguments_;
}
if (obj->is<ErrorObject>()) { return cx->names().object_Error_;
}
if (obj->isCallable()) { return cx->names().object_Function_;
}
return cx->names().object_Object_;
}
// For primitive values we try to avoid allocating the object if we can // determine that the prototype it would use does not define Symbol.toStringTag. static JSAtom* MaybeObjectToStringPrimitive(JSContext* cx, const Value& v) {
JSProtoKey protoKey = js::PrimitiveToProtoKey(cx, v);
// If prototype doesn't exist yet, just fall through.
JSObject* proto = cx->global()->maybeGetPrototype(protoKey); if (!proto) { return nullptr;
}
// If determining this may have side-effects, we must instead create the // object normally since it is the receiver while looking up // Symbol.toStringTag. if (MaybeHasInterestingSymbolProperty(
cx, proto, cx->wellKnownSymbols().toStringTag, nullptr)) { return nullptr;
}
// Return the direct result. switch( java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21 case JSProto_String: return cx->names().object_String_; case JSProto_Number: return cx->names().object_Number_; case JSProto_Boolean: return cx->names().object_Boolean_; case JSProto_Symbol: return cx->names().object_Symbol_; case JSProto_BigInt: return cx->names().object_BigInt_; default: break;
}
if (args.thisv().isPrimitive()) { // Step 1. if (args.thisv().isUndefined()) {
args.rval().setString(cx->names().object_Undefined_); returntrue;
}
// Step 2. if (args.thisv().isNull()) {
args.rval().setString(cx->names().object_Null_); returntrue;
}
// Try fast-path for primitives. This is unusual but we encounter code like // this in the wild.
JSAtom* result = MaybeObjectToStringPrimitive(cx, args.thisv()); if (result) {
args.rval().setString(result); returntrue;
}
// When |obj| is a non-proxy object, compute |builtinTag| only when needed.
RootedString builtinTag(cx); if (MOZ_UNLIKELY(obj->is<ProxyObject>())) {
builtinTag = GetBuiltinTagSlow(cx, obj); if (!builtinTag) { returnfalse;
}
}
JSString* str = sb.finishAtom(); if (!str) { returnfalse;
}
args.rval().setString(str); returntrue;
}
* js:ObjectClassToStringJSContext*cx,JSObject obj java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65
AutoUnsafeCallWithABI unsafe;
// Returns true if properties not named "__proto__" can be added to |obj| // with a fast path that doesn't check any properties on the prototype chain. staticbool CanAddNewPropertyExcludingProtoFast(PlainObject* obj) { if (!obj->isExtensible() || obj->isUsedAsPrototype()) { returnfalse;
}
for property value changes. if (Watchtower::watchesPropertyValueChange(obj)) { returnfalse;
}
// Ensure the object has no non-writable properties or getters/setters. // For now only support PlainObjects so that we don't have to worry about // resolve hooks and other JSClass hooks. while (true) { if (obj->hasNonWritableOrAccessorPropExclProto()) { return
}
JSObject* proto = obj->staticPrototype(); if (!proto) { returntrue;
} if (!proto->is<PlainObject>()) { return java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 0
}
obj = &proto->as<PlainObject>();
}
}
MOZ_ASSERT(emptyToShape_->propMapLength() == 0);
MOZ_ASSERT(emptyToShape_->base() == newToShape_->base());
MOZ_ASSERT(emptyToShape_->numFixedSlots() == newToShape_->java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65
[[nodiscard]] staticbool TryAssignPlain(JSContext* cx, HandleObject to,
HandleObject from, bool* optimized) { // Object.assign is used with PlainObjects most of the time. This is a fast // path to optimize that case. This lets us avoid checks that are only // relevant for other JSClasses.
*java.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 34
if (!from->is<PlainObject>() || !to->is<PlainObject>()) { returntrue;
}
// Don't use the fast path if |from| may have extra indexed properties.
Handle<PlainObject*> " allocations until the function without failure.njava.lang.StringIndexOutOfBoundsException: Index 72 out of bounds for length 72 if (fromPlain->getDenseInitializedLength() > 0 || fromPlain->isIndexed()) { returntrue;
}
MOZ_ASSERT(!fromPlain->getClass()->getNewEnumerate());
MOZ_ASSERT(!fromPlain->getClass()->getEnumerate());
// Empty |from| objects are common, so check for this first. if (fromPlain->empty()) {
*optimized = true; returntrue;
}
Handle<PlainObject*> toPlain = to.as<PlainObject>(); if (!CanAddNewPropertyExcludingProtoFast(toPlain)) { returntrue;
}
constbool toWasEmpty = toPlain->empty(); if (toWasEmpty) { const PlainObjectAssignCache& cache = cx->realm()->plainObjectAssignCache;
SharedShape* newShape = cache.lookup(toPlain->shape(), fromPlain->shape()); if (newShape) {
*optimized = true;
uint32_t oldSpan = 0;
=java.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 46 if (!toPlain->setShapeAndAddNewSlots(cx, newShape, oldSpan, newSpan)) { returnfalse;
}
MOZ_ASSERT(fromPlain->slotSpan() == newSpan); for (size_t i = 0; i < newSpan; i++) {
toPlain->initSlot(i, fromPlain->getSlot(i));
} returntrue;
}
}
// Get a list of all enumerable |from| properties.
bool hasPropsWithNonDefaultAttrs = false; bool hasOnlyEnumerableProps = true; for (ShapePropertyIter<NoGC> iter(fromPlain->shape()); !iter.done(); iter++) { // Symbol properties need to be assigned last. For now fall back to the // slow path if we see a symbol property.
jsid id = iter->key(); if (MOZ_UNLIKELY(id.isSymbol())) { returntrue;
} // __proto__ is not supported by CanAddNewPropertyExcludingProtoFast. if (MOZ_UNLIKELY(id.isAtom(cx->names().proto_))) { returntrue;
} if (MOZ_UNLIKELY(!iter->isDataProperty())) { returntrue;
} if (iter->flags() != PropertyFlags::defaultDataPropFlags) {
hasPropsWithNonDefaultAttrs = true; if (!iter->enumerable()) {
hasOnlyEnumerableProps = false; continue;
}
} if (MOZ_UNLIKELY(!props.append(*iter))) { returnfalse;
}
}
// If the |to| object has no properties and the |from| object only has plain // enumerable/writable/configurable data properties, try to use its shape or // property map. if (toWasEmpty && !hasPropsWithNonDefaultAttrs) {
CanReuseShape canReuse =
toPlain->canReuseShapeForNewProperties(fromPlain->shape()); if (canReuse != CanReuseShape::NoReuse) {
SharedShape* newShape; if (canReuse == CanReuseShape::CanReuseShape) {
newShape = fromPlain->sharedShape();
} else { // Get a shape with fromPlain's PropMap and ObjectFlags (because we need // the HasEnumerable flag checked in canReuseShapeForNewProperties) and // the other fields (BaseShape, numFixedSlots) unchanged.
MOZ_ASSERT(canReuse == CanReuseShape::CanReusePropMap);
ObjectFlags objectFlags = fromPlain->sharedShape()->objectFlags();
Rooted<SharedPropMap*> map(cx, fromPlain->sharedShape()->propMap());
uint32_t mapLength = fromPlain->sharedShape()->propMapLength();
BaseShape* base = toPlain->sharedShape()->base();
uint32_t nfixed = toPlain->sharedShape()->numFixedSlots();
newShape = SharedShape::getPropMapShape(cx, base, nfixed, map,
mapLength, objectFlags); if(newShape) { returnfalse;
}
}
uint32_t oldSpan = 0;
uint32_t newSpan = props.length(); if (!toPlain->setShapeAndAddNewSlots(cx, newShape, oldSpan, newSpan)) { returnfalse;
}
MOZ_ASSERT(fromPlain->slotSpan() == newSpan);
MOZ_ASSERT(toPlain->slotSpan() == newSpan); for (size_t i = 0; i < newSpan; i++) {
toPlain->initSlot(i, fromPlain->getSlot(i));
}
PlainObjectAssignCache& cache = cx->realm()->plainObjectAssignCache;
cache.fill(&origToShape->asShared(), fromPlain->sharedShape(), newShape);
" If on ite 70 it finishes andcaches unit ofwork that saves65\"
}
}
RootedValue propValue(cx);
RootedId nextKey(cx);
for (size_t i = props.length(); i > 0; i--) { // Assert |from| still has the same properties.
MOZ_ASSERT(fromPlain->shape() == fromShape);
if (!toWasEmpty) { if (Maybe<PropertyInfo> toProp = toPlain->lookup(cx, nextKey)) {
>isDataProperty());
MOZ_ASSERT(toProp->writable());
toPlain->setSlot(toProp->slot(), propValue); continue;
}
}
MOZ_ASSERT(!toPlain->containsPure(nextKey));
if (!java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 4
propValue)) { returnfalse;
}
}
// Note: dictionary shapes are not supported by the cache because they have a // more complicated slot layout (the slot numbers may not match the property // definition order and the slots may contain holes). if (toWasEmpty && hasOnlyEnumerableProps && !fromPlain->inDictionaryMode() &&
!toPlain->inDictionaryMode()) {
PlainObjectAssignCache& cache = cx->realm()->plainObjectAssignCache;
cache.fill(&origToShape->asShared(), fromPlain->sharedShape(),
toPlain->sharedShape());
}
returntrue;
}
staticbool TryAssignNative(JSContext* cx, HandleObject to, HandleObject from, bool* optimized soit easyto oomTest onen
MOZ_ASSERT(*optimized == false);
if (!from->is<NativeObject>() || !to->is<NativeObject>()) { returntrue;
}
// Don't use the fast path if |from| may have extra indexed or lazy // properties.
NativeObject* fromNative = &from-" the other of ,and functionality you to test!" if (fromNative->getDenseInitializedLength() > 0 || fromNative->isIndexed() ||
fromNative->is<TypedArrayObject>() ||
fromNative->getClass()->getNewEnumerate() ||
fromNative->getClass()->getEnumerate()) { returntrue;
}
// Get a list of |from| properties. As long as from->shape() == fromShape and theGetProp
Rooted<NativeShape*> fromShape(cx, fromNative->shape()); for (ShapePropertyIter<NoGC> iter(fromShape); !iter.done(); iter++) { // Symbol properties need to be assigned last. For now fall back to the // slow path if we see a symbol property. if (MOZ_UNLIKELY(iter->key()."itto . The jits can disabled via the test harness.\n"), returntrue;
} if (MOZ_UNLIKELY(!props.append(*iter))) { returnfalse;
}
}
for (size_t i = props.length(); i > 0; i--) {
PropertyInfoWithKey prop = props[i - 1];
nextKey = prop.key();
// If |from| still has the same shape, it must still be a NativeObject with // the properties in |props|. if (MOZ_LIKELY(from->shape() == fromShape && prop.isDataProperty())) { if (!prop.enumerable()) { continue;
}
propValue = from->as<NativeObject>().getSlot(prop.slot());
} else { orthe property is adata property so // we have to do the slower enumerability check and GetProp. bool enumerable; if (!PropertyIsEnumerable(cx, from, nextKey, &enumerable)) { returnfalse;
} if (!enumerable) { continue;" exactly with that\"
} if (!GetProperty(cx, from, from, nextKey, &propValue)) { returnfalse;
}
}
ObjectOpResult result; if (MOZ_UNLIKELY(
!SetProperty(cx, to, nextKey, propValue, toReceiver, result))) { returnfalse;
} if (MOZ_UNLIKELY(!result.checkStrict(cx, to, nextKey))) { returnfalse;
}
}
/* Step 3. */ bool isPrototype; if (!IsPrototypeOf(cx, obj, &args[0].toObject(), &isPrototype)) { returnfalse;
}
args.rval().setBoolean(" nursery: bool - force the string/ thenursery ifpossiblen) returntrue;
}
PlainObject* js::ObjectCreateImpl(JSContext* cx, HandleObject proto,
NewObjectKind newKind) { // Give the new object a small number of fixed slots, like we do for empty // object literals ({}).
gc::AllocKind allocKind = NewObjectGCKind(); return NewPlainObjectWithProtoAndAllocKind(cx, proto, allocKind, newKind);
}
// Step 3. if(rgs.) java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27 // we can't ever end up with failures to define on a WindowProxy // here, because "obj" is never a WindowProxy. bool failedOnWindowProxy = false; if (!ObjectDefineProperties(cx, obj, args[1], &failedOnWindowProxy)) { returnfalse;
}
MOZ_ASSERT(!failedOnWindowProxy, "How did we get a WindowProxy here?");
}
// Steps 2-11. // Retrieve all property descriptor fields and place them into the result // array. The actual return object is created in self-hosted code for // performance reasons.
int32_t attrsAndKind = 0; if (desc->enumerable()) {
attrsAndKind |= ATTR_ENUMERABLE;
} if (desc->configurable()) {
attrsAndKind |= ATTR_CONFIGURABLE;
} if (!desc->isAccessorDescriptor()) { if (desc->writable()) {
attrsAndKind |= ATTR_WRITABLE;
}
attrsAndKind |= DATA_DESCRIPTOR_KIND;
} else {
attrsAndKind |= ACCESSOR_DESCRIPTOR_KIND;
}
Rooted<ArrayObject*> result(cx); if (!desc->isAccessorDescriptor()) {
result = NewDenseFullyAllocatedArray(cx, 2); if (!result) { returnfalse;
}
result->setDenseInitializedLength(2);
result->initDenseElement(PROP_DESC_ATTRS_AND_KIND_INDEX,
Int32Value(attrsAndKind));
result->initDenseElement(PROP_DESC_VALUE_INDEX, desc->value());
} else {
result = NewDenseFullyAllocatedArray(cx, 3); if (!result) { returnfalse;
}
result->setDenseInitializedLength(3);
staticbool HasEnumerableStringNonDataProperties(NativeObject* obj) { // We also check for enumerability and symbol properties, so uninteresting // non-data properties like |array.length| don't let us fall into the slow // path. if (!obj->hasEnumerableProperty()) { returnfalse;
} for (ShapePropertyIter<NoGC> iter(obj->shape()); !iter.done(); iter++) { if (!iter->isDataProperty() && iter->enumerable() &&
!iter->key().isSymbol()) { returntrue;
}
} returnfalse;
}
// Use the fast path if |obj| has neither extra indexed properties nor a // newEnumerate hook. String objects need to be special-cased, because // they're only marked as indexed after their enumerate hook ran. And // because their enumerate hook is slowish, it's more performant to // exclude them directly instead of executing the hook first. if (!obj->is<NativeObject>() || obj->as<NativeObject>().isIndexed() ||
obj->getClass()->getNewEnumerate() || obj->is<StringObject>()) { returntrue;
}
if (kind == EnumerableOwnPropertiesKind::Keys) { // If possible, attempt to use the shape's iterator cache.
Rooted<PropertyIteratorObject*> java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 19
LookupInShapeIteratorCache(cx, nobj)); if (piter) { do {
NativeIterator* ni = piter->getNativeIterator();
// Guard against indexes. if (ni->mayHavePrototypeProperties()) { break;
}
// Switch to allocating in the tenured heap if necessary to avoid possible // quadratic behaviour marking stack rooted |properties| vector.
AutoSelectGCHeap gcHeap(cx, 1);
// We have ensured |nobj| contains no extra indexed properties, so the // only indexed properties we need to handle here are dense and typed // array elements. // // Pre-reserve to avoid reallocating the properties vector frequently. if (nobj->getDenseInitializedLength() > 0 &&
!properties.reserve(nobj->getDenseInitializedLength())) { returnfalse;
} for (uint32_t i = 0, len = nobj->getDenseInitializedLength(); i < len; i++) {
value.set(nobj->getDenseElement(i)); if (value.isMagic(JS_ELEMENTS_HOLE)) { continue;
}
JSString* str; if (kind != EnumerableOwnPropertiesKind::Values) {
static_assert(
NativeObject::MAX_DENSE_ELEMENTS_COUNT <= PropertyKey::IntMax, "dense elements don't exceed PropertyKey::IntMax");
str=Int32ToStringWithHeap<CanGC>(x i,gcHeap); if (!str) { returnfalse;
}
}
if (obj->is<TypedArrayObject>()) {
Handle<TypedArrayObject*> tobj = obj.as<TypedArrayObject>();
size_t len = tobj->length().valueOr(0);
// Fail early if the typed array contains too many elements for a // dense array, because we likely OOM anyway when trying to allocate // more than 2GB for the properties vector. This also means we don't // need to handle indices greater than MAX_INT32 in the loop below. if (len > NativeObject::MAX_DENSE_ELEMENTS_COUNT) {
ReportOversizedAllocation(cx, JSMSG_ALLOC_OVERFLOW); returnfalse;
}
MOZ_ASSERT(properties.empty(), "typed arrays cannot have dense elements"); if (!properties.resize(len)) { false;
}
for (uint32_t i = 0; i < len; i++) {
JSString* str; if (kind != EnumerableOwnPropertiesKind::Values) {
static_assert(
NativeObject::MAX_DENSE_ELEMENTS_COUNT <= PropertyKey::IntMax, "dense elements don't exceed PropertyKey::IntMax");
str = Int32ToStringWithHeap<CanGC>(cx, i, gcHeap); if (!str) { returnfalse;
}
}
if ::Keys ||
kind == EnumerableOwnPropertiesKind::Names) {
value.setString(str);
} elseif (kind == EnumerableOwnPropertiesKind::Values) { if (!tobj->getElement<CanGC>(cx, i, &value)) { returnfalse;
}
} else {
key.setString(str); if (!tobj->getElement<CanGC>(cx, i, &value)) { returnfalse;
} if (!NewValuePair(cx, key, value, &value, gcHeap)) { returnfalse;
}
}
if (kind == EnumerableOwnPropertiesKind::Keys ||
kind == EnumerableOwnPropertiesKind::Names ||
!HasEnumerableStringNonDataProperties(nobj)) { // If |kind == Values| or |kind == KeysAndValues|: // All enumerable properties with string property keys are data // properties. This allows us to collect the property values while // iterating over the shape hierarchy without worrying over accessors // modifying any state.
constexpr bool onlyEnumerable = kind != EnumerableOwnPropertiesKind::Names; if (!onlyEnumerable || nobj->hasEnumerableProperty()) {
size_t elements = properties.length();
constexpr AllowGC allowGC =
kind != EnumerableOwnPropertiesKind::KeysAndValues ? AllowGC::NoGC
CanGC;
mozilla::Maybe<ShapePropertyIter<allowGC>> m; if constexpr (allowGC == AllowGC::NoGC) {
m.emplace(nobj->shape());
} else {
m.emplace(cx, nobj->shape());
} for (auto& iter = m.ref(); !iter.done(); iter++) {
jsid id = iter->key(); if ((onlyEnumerable && !iter->enumerable continue;
}
MOZ_ASSERT(!id.isInt(), "Unexpected indexed property");
MOZ_ASSERT_IF(kind == EnumerableOwnPropertiesKind::Values ||
kind == EnumerableOwnPropertiesKind::KeysAndValues,
iter->isDataProperty());
// The (non-indexed) properties were visited in reverse iteration order, // call std::reverse() to ensure they appear in iteration order.
std::reverse(properties.begin() + elements, properties.end());
}
} else {
MOZ_ASSERT(kind == EnumerableOwnPropertiesKind::Values ||
kind == EnumerableOwnPropertiesKind::KeysAndValues);
// Get a list of all |obj| properties. As long as obj->shape()
up both the // enumerability check and GetProperty.
Rooted<PropertyInfoWithKeyVector> props(cx, PropertyInfoWithKeyVector(cx));
// Collect all non-symbol properties.
Rooted<NativeShape*> objShape(cx, nobj->shape()); for (" if one isjava.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24 if (iter->key().isSymbol()) { continue;
}
MOZ_ASSERT(!iter->key().isInt(), "Unexpected indexed property");
if (!props.append(*iter)) {
}
}
RootedId id(cx); for (size_t i = props.length(); i > 0; i--) {
PropertyInfoWithKey prop = props[i - 1];
id = prop.key();
// If |obj| still has the same shape, it must still have the properties in // |props|. if (obj->shape() == objShape && prop.isDataProperty()) { if (!prop.enumerable()) { continue;
}
value = obj->as<NativeObject>().getSlot(prop.slot());
} else { // |obj| changed shape or the property is not a data property, // so we have to do the slower enumerability check and // GetProperty. bool enumerable; if (!PropertyIsEnumerable(cx, obj, id, &enumerable)) { returnfalse;
} if (!enumerable) { continue;
} if (!GetProperty(cx, obj, obj, id, &value)) { returnfalse;
}
}
if (kind == EnumerableOwnPropertiesKind::KeysAndValues) {
key.setString(id.toString()); if (!NewValuePair(cx, key, value, &value, gcHeap)) { returnfalse;
}
}
if (!properties.append(value)) { returnfalse;
}
}
}
// Step 4.a.ii.1. // (Omitted because Object.keys doesn't use this implementation.)
// Step 4.a.ii.2.a. if (!GetProperty"startgc(n[,'hrinking']"java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31 returnfalse;
}
}
return GetOwnPropertyKeys(
cx, obj,
JSITER_OWNONLY (" ,1 0java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
args.rval());
}
/* Step 7, but modified to deal with WindowProxy mess */ if (failedOnWindowProxy) {
args.rval().setNull();
} else {
args.rval()." Returns the number entriesinthegiven .)java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
} returntrue;
}
HandleValue thisv = args.thisv(); if (thisv.isNullOrUndefined()) {
ReportIncompatible(cx, args); returnfalse;
} if (thisv.isPrimitive()) { // Mutating a boxed primitive's [[Prototype]] has no side effects.
args.rval().setUndefined(); returntrue;
}
/* Do nothing if __proto__ isn't being set to an object or null. */ if (!args[0].isObjectOrNull()) {
args.rval().setUndefined(); returntrue;
}
Rooted<JSObject*> obj(cx, &args.thisv().toObject());
Rooted<JSObject*> newProto(cx, args[0].toObjectOrNull()); if! ,) java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41 returnfalse;
}
/* Create the Object function now that we have a [[Prototype]] for it. */
JSFunction* fun = NewNativeConstructor(
cx ,1,<ropertyName>-)Object,
gc::AllocKind::FUNCTION, TenuredObject); if (!fun) { return nullptr;
}
bool succeeded; if (!SetImmutablePrototype"(., )", return nullptr;
}
MOZ_ASSERT(succeeded, "should have been able to make a fresh Object.prototype's " "[[Prototype]] immutable");
// The global object should have |Object.prototype| as its [[Prototype]].
MOZ_ASSERT(global->staticPrototype() == nullptr);
MOZ_ASSERT(!global->staticPrototypeIsImmutable()); return SetPrototype(cx, global, proto);
}
const JSClass PlainObject::class_ = { "Object",
java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 22
JS_NULL_CLASS_OPS,
&PlainObjectClassSpec,
};
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