bool
JSCompartment::wrap(JSContext* cx, MutableHandleString strp)
{
MOZ_ASSERT(!cx->runtime()->isAtomsCompartment(this));
MOZ_ASSERT(cx->compartment() == this);
/* If the string is already in this compartment, we are done. */
JSString* str = strp;
if (str->zoneFromAnyThread() == zone())
return true;
/* If the string is an atom, we don't have to copy. */
if (str->isAtom()) {
MOZ_ASSERT(str->isPermanentAtom() || str->zone()->isAtomsZone());
return true;
}
/* Check the cache. */
RootedValue key(cx, StringValue(str));
if (WrapperMap::Ptr p = crossCompartmentWrappers.lookup(CrossCompartmentKey(key))) {
strp.set(p->value().get().toString());
return true;
}
/* No dice. Make a copy, and cache it. */
JSString* copy = CopyStringPure(cx, str);
if (!copy)
return false;
if (!putWrapper(cx, CrossCompartmentKey(key), StringValue(copy)))
return false;
strp.set(copy);
return true;
}
JSAtom *
js::ToAtom(ExclusiveContext *cx, typename MaybeRooted<Value, allowGC>::HandleType v)
{
if (!v.isString())
return ToAtomSlow<allowGC>(cx, v);
JSString *str = v.toString();
if (str->isAtom())
return &str->asAtom();
return AtomizeString(cx, str);
}
bool
JSCompartment::wrap(JSContext *cx, JSString **strp)
{
JS_ASSERT(!cx->runtime()->isAtomsCompartment(this));
JS_ASSERT(cx->compartment() == this);
/* If the string is already in this compartment, we are done. */
JSString *str = *strp;
if (str->zone() == zone())
return true;
/* If the string is an atom, we don't have to copy. */
if (str->isAtom()) {
JS_ASSERT(cx->runtime()->isAtomsZone(str->zone()));
return true;
}
/* Check the cache. */
RootedValue key(cx, StringValue(str));
if (WrapperMap::Ptr p = crossCompartmentWrappers.lookup(key)) {
*strp = p->value().get().toString();
return true;
}
/* No dice. Make a copy, and cache it. */
Rooted<JSLinearString *> linear(cx, str->ensureLinear(cx));
if (!linear)
return false;
JSString *copy = js_NewStringCopyN<CanGC>(cx, linear->chars(),
linear->length());
if (!copy)
return false;
if (!putWrapper(key, StringValue(copy)))
return false;
if (linear->zone()->isGCMarking()) {
/*
* All string wrappers are dropped when collection starts, but we
* just created a new one. Mark the wrapped string to stop it being
* finalized, because if it was then the pointer in this
* compartment's wrapper map would be left dangling.
*/
JSString *tmp = linear;
MarkStringUnbarriered(&cx->runtime()->gcMarker, &tmp, "wrapped string");
JS_ASSERT(tmp == linear);
}
*strp = copy;
return true;
}
bool
JSCompartment::wrap(JSContext *cx, JSString **strp)
{
JS_ASSERT(!cx->runtime()->isAtomsCompartment(this));
JS_ASSERT(cx->compartment() == this);
/* If the string is already in this compartment, we are done. */
JSString *str = *strp;
if (str->zone() == zone())
return true;
/* If the string is an atom, we don't have to copy. */
if (str->isAtom()) {
JS_ASSERT(cx->runtime()->isAtomsZone(str->zone()));
return true;
}
/* Check the cache. */
RootedValue key(cx, StringValue(str));
if (WrapperMap::Ptr p = crossCompartmentWrappers.lookup(key)) {
*strp = p->value().get().toString();
return true;
}
/*
* No dice. Make a copy, and cache it. Directly allocate the copy in the
* destination compartment, rather than first flattening it (and possibly
* allocating in source compartment), because we don't know whether the
* flattening will pay off later.
*/
JSString *copy;
if (str->hasPureChars()) {
copy = js_NewStringCopyN<CanGC>(cx, str->pureChars(), str->length());
} else {
ScopedJSFreePtr<jschar> copiedChars;
if (!str->copyNonPureCharsZ(cx, copiedChars))
return false;
copy = js_NewString<CanGC>(cx, copiedChars.forget(), str->length());
}
if (!copy)
return false;
if (!putWrapper(cx, key, StringValue(copy)))
return false;
*strp = copy;
return true;
}
void generateStringPath(Assembler &masm)
{
const ValueRemat &lvr = ic.lvr;
const ValueRemat &rvr = ic.rvr;
JS_ASSERT_IF(lvr.isConstant(), lvr.isType(JSVAL_TYPE_STRING));
JS_ASSERT_IF(rvr.isConstant(), rvr.isType(JSVAL_TYPE_STRING));
if (!lvr.isType(JSVAL_TYPE_STRING)) {
Jump lhsFail = masm.testString(Assembler::NotEqual, lvr.typeReg());
linkToStub(lhsFail);
}
if (!rvr.isType(JSVAL_TYPE_STRING)) {
Jump rhsFail = masm.testString(Assembler::NotEqual, rvr.typeReg());
linkToStub(rhsFail);
}
RegisterID tmp = ic.tempReg;
/* JSString::isAtom === (lengthAndFlags & ATOM_MASK == 0) */
JS_STATIC_ASSERT(JSString::ATOM_FLAGS == 0);
Imm32 atomMask(JSString::ATOM_MASK);
masm.load32(Address(lvr.dataReg(), JSString::offsetOfLengthAndFlags()), tmp);
Jump lhsNotAtomized = masm.branchTest32(Assembler::NonZero, tmp, atomMask);
linkToStub(lhsNotAtomized);
if (!rvr.isConstant()) {
masm.load32(Address(rvr.dataReg(), JSString::offsetOfLengthAndFlags()), tmp);
Jump rhsNotAtomized = masm.branchTest32(Assembler::NonZero, tmp, atomMask);
linkToStub(rhsNotAtomized);
}
if (rvr.isConstant()) {
JSString *str = rvr.value().toString();
JS_ASSERT(str->isAtom());
Jump test = masm.branchPtr(ic.cond, lvr.dataReg(), ImmPtr(str));
linkTrue(test);
} else {
Jump test = masm.branchPtr(ic.cond, lvr.dataReg(), rvr.dataReg());
linkTrue(test);
}
Jump fallthrough = masm.jump();
linkFalse(fallthrough);
}
JSAtom*
js::ToAtom(ExclusiveContext* cx, typename MaybeRooted<Value, allowGC>::HandleType v)
{
if (!v.isString())
return ToAtomSlow<allowGC>(cx, v);
JSString* str = v.toString();
if (str->isAtom())
return &str->asAtom();
JSAtom* atom = AtomizeString(cx, str);
if (!atom && !allowGC) {
MOZ_ASSERT_IF(cx->isJSContext(), cx->asJSContext()->isThrowingOutOfMemory());
cx->recoverFromOutOfMemory();
}
return atom;
}
JSAtom *
js::ToAtom(ExclusiveContext *cx, typename MaybeRooted<Value, allowGC>::HandleType v)
{
if (!v.isString()) {
JSString *str = js::ToStringSlow<allowGC>(cx, v);
if (!str)
return NULL;
JS::Anchor<JSString *> anchor(str);
return AtomizeString<allowGC>(cx, str);
}
JSString *str = v.toString();
if (str->isAtom())
return &str->asAtom();
JS::Anchor<JSString *> anchor(str);
return AtomizeString<allowGC>(cx, str);
}
bool
JSCompartment::wrap(JSContext *cx, MutableHandleValue vp, HandleObject existingArg)
{
JS_ASSERT(cx->compartment() == this);
JS_ASSERT(this != rt->atomsCompartment);
JS_ASSERT_IF(existingArg, existingArg->compartment() == cx->compartment());
JS_ASSERT_IF(existingArg, vp.isObject());
JS_ASSERT_IF(existingArg, IsDeadProxyObject(existingArg));
unsigned flags = 0;
JS_CHECK_CHROME_RECURSION(cx, return false);
AutoDisableProxyCheck adpc(rt);
/* Only GC things have to be wrapped or copied. */
if (!vp.isMarkable())
return true;
if (vp.isString()) {
JSString *str = vp.toString();
/* If the string is already in this compartment, we are done. */
if (str->zone() == zone())
return true;
/* If the string is an atom, we don't have to copy. */
if (str->isAtom()) {
JS_ASSERT(str->zone() == cx->runtime()->atomsCompartment->zone());
return true;
}
}
/*
* Wrappers should really be parented to the wrapped parent of the wrapped
* object, but in that case a wrapped global object would have a NULL
* parent without being a proper global object (JSCLASS_IS_GLOBAL). Instead,
* we parent all wrappers to the global object in their home compartment.
* This loses us some transparency, and is generally very cheesy.
*/
HandleObject global = cx->global();
/* Unwrap incoming objects. */
if (vp.isObject()) {
RootedObject obj(cx, &vp.toObject());
if (obj->compartment() == this)
return WrapForSameCompartment(cx, obj, vp);
/* Translate StopIteration singleton. */
if (obj->is<StopIterationObject>())
return js_FindClassObject(cx, JSProto_StopIteration, vp);
/* Unwrap the object, but don't unwrap outer windows. */
obj = UncheckedUnwrap(obj, /* stopAtOuter = */ true, &flags);
if (obj->compartment() == this)
return WrapForSameCompartment(cx, obj, vp);
if (cx->runtime()->preWrapObjectCallback) {
obj = cx->runtime()->preWrapObjectCallback(cx, global, obj, flags);
if (!obj)
return false;
}
if (obj->compartment() == this)
return WrapForSameCompartment(cx, obj, vp);
vp.setObject(*obj);
#ifdef DEBUG
{
JSObject *outer = GetOuterObject(cx, obj);
JS_ASSERT(outer && outer == obj);
}
#endif
}
RootedValue key(cx, vp);
/* If we already have a wrapper for this value, use it. */
if (WrapperMap::Ptr p = crossCompartmentWrappers.lookup(key)) {
vp.set(p->value);
if (vp.isObject()) {
DebugOnly<JSObject *> obj = &vp.toObject();
JS_ASSERT(obj->isCrossCompartmentWrapper());
JS_ASSERT(obj->getParent() == global);
}
return true;
}
if (vp.isString()) {
Rooted<JSLinearString *> str(cx, vp.toString()->ensureLinear(cx));
if (!str)
return false;
JSString *wrapped = js_NewStringCopyN<CanGC>(cx, str->chars(), str->length());
if (!wrapped)
return false;
vp.setString(wrapped);
if (!putWrapper(key, vp))
return false;
if (str->zone()->isGCMarking()) {
/*
* All string wrappers are dropped when collection starts, but we
* just created a new one. Mark the wrapped string to stop it being
* finalized, because if it was then the pointer in this
* compartment's wrapper map would be left dangling.
*/
JSString *tmp = str;
MarkStringUnbarriered(&rt->gcMarker, &tmp, "wrapped string");
JS_ASSERT(tmp == str);
}
return true;
}
RootedObject proto(cx, Proxy::LazyProto);
RootedObject obj(cx, &vp.toObject());
RootedObject existing(cx, existingArg);
if (existing) {
/* Is it possible to reuse |existing|? */
if (!existing->getTaggedProto().isLazy() ||
existing->getClass() != &ObjectProxyClass ||
existing->getParent() != global ||
obj->isCallable())
{
existing = NULL;
}
}
/*
* We hand in the original wrapped object into the wrap hook to allow
* the wrap hook to reason over what wrappers are currently applied
* to the object.
*/
RootedObject wrapper(cx);
wrapper = cx->runtime()->wrapObjectCallback(cx, existing, obj, proto, global, flags);
if (!wrapper)
return false;
// We maintain the invariant that the key in the cross-compartment wrapper
// map is always directly wrapped by the value.
JS_ASSERT(Wrapper::wrappedObject(wrapper) == &key.get().toObject());
vp.setObject(*wrapper);
return putWrapper(key, vp);
}
bool
JSCompartment::wrap(JSContext *cx, Value *vp, JSObject *existing)
{
JS_ASSERT(cx->compartment == this);
JS_ASSERT_IF(existing, existing->compartment() == cx->compartment);
JS_ASSERT_IF(existing, vp->isObject());
JS_ASSERT_IF(existing, IsDeadProxyObject(existing));
unsigned flags = 0;
JS_CHECK_CHROME_RECURSION(cx, return false);
#ifdef DEBUG
struct AutoDisableProxyCheck {
JSRuntime *runtime;
AutoDisableProxyCheck(JSRuntime *rt) : runtime(rt) {
runtime->gcDisableStrictProxyCheckingCount++;
}
~AutoDisableProxyCheck() { runtime->gcDisableStrictProxyCheckingCount--; }
} adpc(rt);
#endif
/* Only GC things have to be wrapped or copied. */
if (!vp->isMarkable())
return true;
if (vp->isString()) {
JSString *str = vp->toString();
/* If the string is already in this compartment, we are done. */
if (str->compartment() == this)
return true;
/* If the string is an atom, we don't have to copy. */
if (str->isAtom()) {
JS_ASSERT(str->compartment() == cx->runtime->atomsCompartment);
return true;
}
}
/*
* Wrappers should really be parented to the wrapped parent of the wrapped
* object, but in that case a wrapped global object would have a NULL
* parent without being a proper global object (JSCLASS_IS_GLOBAL). Instead,
* we parent all wrappers to the global object in their home compartment.
* This loses us some transparency, and is generally very cheesy.
*/
HandleObject global = cx->global();
/* Unwrap incoming objects. */
if (vp->isObject()) {
Rooted<JSObject*> obj(cx, &vp->toObject());
if (obj->compartment() == this)
return WrapForSameCompartment(cx, obj, vp);
/* Translate StopIteration singleton. */
if (obj->isStopIteration()) {
RootedValue vvp(cx, *vp);
bool result = js_FindClassObject(cx, JSProto_StopIteration, &vvp);
*vp = vvp;
return result;
}
/* Unwrap the object, but don't unwrap outer windows. */
obj = UnwrapObject(&vp->toObject(), /* stopAtOuter = */ true, &flags);
if (obj->compartment() == this)
return WrapForSameCompartment(cx, obj, vp);
if (cx->runtime->preWrapObjectCallback) {
obj = cx->runtime->preWrapObjectCallback(cx, global, obj, flags);
if (!obj)
return false;
}
if (obj->compartment() == this)
return WrapForSameCompartment(cx, obj, vp);
vp->setObject(*obj);
#ifdef DEBUG
{
JSObject *outer = GetOuterObject(cx, obj);
JS_ASSERT(outer && outer == obj);
}
#endif
}
RootedValue key(cx, *vp);
/* If we already have a wrapper for this value, use it. */
if (WrapperMap::Ptr p = crossCompartmentWrappers.lookup(key)) {
*vp = p->value;
if (vp->isObject()) {
RootedObject obj(cx, &vp->toObject());
JS_ASSERT(obj->isCrossCompartmentWrapper());
JS_ASSERT(obj->getParent() == global);
}
return true;
}
if (vp->isString()) {
RootedValue orig(cx, *vp);
JSStableString *str = vp->toString()->ensureStable(cx);
if (!str)
return false;
JSString *wrapped = js_NewStringCopyN(cx, str->chars().get(), str->length());
if (!wrapped)
return false;
vp->setString(wrapped);
return crossCompartmentWrappers.put(orig, *vp);
}
RootedObject obj(cx, &vp->toObject());
JSObject *proto = Proxy::LazyProto;
if (existing) {
/* Is it possible to reuse |existing|? */
if (!existing->getTaggedProto().isLazy() ||
existing->getClass() != &ObjectProxyClass ||
existing->getParent() != global ||
obj->isCallable())
{
existing = NULL;
}
}
/*
* We hand in the original wrapped object into the wrap hook to allow
* the wrap hook to reason over what wrappers are currently applied
* to the object.
*/
RootedObject wrapper(cx);
wrapper = cx->runtime->wrapObjectCallback(cx, existing, obj, proto, global, flags);
if (!wrapper)
return false;
// We maintain the invariant that the key in the cross-compartment wrapper
// map is always directly wrapped by the value.
JS_ASSERT(Wrapper::wrappedObject(wrapper) == &key.get().toObject());
vp->setObject(*wrapper);
if (!crossCompartmentWrappers.put(key, *vp))
return false;
return true;
}
bool
JSCompartment::wrap(JSContext *cx, Value *vp)
{
JS_ASSERT(cx->compartment == this);
unsigned flags = 0;
JS_CHECK_RECURSION(cx, return false);
/* Only GC things have to be wrapped or copied. */
if (!vp->isMarkable())
return true;
if (vp->isString()) {
JSString *str = vp->toString();
/* If the string is already in this compartment, we are done. */
if (str->compartment() == this)
return true;
/* If the string is an atom, we don't have to copy. */
if (str->isAtom()) {
JS_ASSERT(str->compartment() == cx->runtime->atomsCompartment);
return true;
}
}
/*
* Wrappers should really be parented to the wrapped parent of the wrapped
* object, but in that case a wrapped global object would have a NULL
* parent without being a proper global object (JSCLASS_IS_GLOBAL). Instead,
* we parent all wrappers to the global object in their home compartment.
* This loses us some transparency, and is generally very cheesy.
*/
JSObject *global;
if (cx->hasfp()) {
global = &cx->fp()->scopeChain().global();
} else {
global = JS_ObjectToInnerObject(cx, cx->globalObject);
if (!global)
return false;
}
/* Unwrap incoming objects. */
if (vp->isObject()) {
JSObject *obj = &vp->toObject();
/* If the object is already in this compartment, we are done. */
if (obj->compartment() == this)
return true;
/* Translate StopIteration singleton. */
if (obj->isStopIteration())
return js_FindClassObject(cx, NULL, JSProto_StopIteration, vp);
/* Don't unwrap an outer window proxy. */
if (!obj->getClass()->ext.innerObject) {
obj = UnwrapObject(&vp->toObject(), true, &flags);
vp->setObject(*obj);
if (obj->compartment() == this)
return true;
if (cx->runtime->preWrapObjectCallback) {
obj = cx->runtime->preWrapObjectCallback(cx, global, obj, flags);
if (!obj)
return false;
}
vp->setObject(*obj);
if (obj->compartment() == this)
return true;
} else {
if (cx->runtime->preWrapObjectCallback) {
obj = cx->runtime->preWrapObjectCallback(cx, global, obj, flags);
if (!obj)
return false;
}
JS_ASSERT(!obj->isWrapper() || obj->getClass()->ext.innerObject);
vp->setObject(*obj);
}
#ifdef DEBUG
{
JSObject *outer = obj;
OBJ_TO_OUTER_OBJECT(cx, outer);
JS_ASSERT(outer && outer == obj);
}
#endif
}
/* If we already have a wrapper for this value, use it. */
if (WrapperMap::Ptr p = crossCompartmentWrappers.lookup(*vp)) {
*vp = p->value;
if (vp->isObject()) {
JSObject *obj = &vp->toObject();
JS_ASSERT(obj->isCrossCompartmentWrapper());
if (global->getClass() != &dummy_class && obj->getParent() != global) {
do {
if (!obj->setParent(cx, global))
return false;
obj = obj->getProto();
} while (obj && obj->isCrossCompartmentWrapper());
}
}
return true;
}
if (vp->isString()) {
Value orig = *vp;
JSString *str = vp->toString();
const jschar *chars = str->getChars(cx);
if (!chars)
return false;
JSString *wrapped = js_NewStringCopyN(cx, chars, str->length());
if (!wrapped)
return false;
vp->setString(wrapped);
return crossCompartmentWrappers.put(orig, *vp);
}
JSObject *obj = &vp->toObject();
/*
* Recurse to wrap the prototype. Long prototype chains will run out of
* stack, causing an error in CHECK_RECURSE.
*
* Wrapping the proto before creating the new wrapper and adding it to the
* cache helps avoid leaving a bad entry in the cache on OOM. But note that
* if we wrapped both proto and parent, we would get infinite recursion
* here (since Object.prototype->parent->proto leads to Object.prototype
* itself).
*/
JSObject *proto = obj->getProto();
if (!wrap(cx, &proto))
return false;
/*
* We hand in the original wrapped object into the wrap hook to allow
* the wrap hook to reason over what wrappers are currently applied
* to the object.
*/
JSObject *wrapper = cx->runtime->wrapObjectCallback(cx, obj, proto, global, flags);
if (!wrapper)
return false;
vp->setObject(*wrapper);
if (wrapper->getProto() != proto && !SetProto(cx, wrapper, proto, false))
return false;
if (!crossCompartmentWrappers.put(GetProxyPrivate(wrapper), *vp))
return false;
if (!wrapper->setParent(cx, global))
return false;
return true;
}
bool
JSCompartment::wrap(JSContext *cx, Value *vp)
{
JS_ASSERT(cx->compartment == this);
unsigned flags = 0;
JS_CHECK_RECURSION(cx, return false);
#ifdef DEBUG
struct AutoDisableProxyCheck {
JSRuntime *runtime;
AutoDisableProxyCheck(JSRuntime *rt) : runtime(rt) {
runtime->gcDisableStrictProxyCheckingCount++;
}
~AutoDisableProxyCheck() { runtime->gcDisableStrictProxyCheckingCount--; }
} adpc(rt);
#endif
/* Only GC things have to be wrapped or copied. */
if (!vp->isMarkable())
return true;
if (vp->isString()) {
JSString *str = vp->toString();
/* If the string is already in this compartment, we are done. */
if (str->compartment() == this)
return true;
/* If the string is an atom, we don't have to copy. */
if (str->isAtom()) {
JS_ASSERT(str->compartment() == cx->runtime->atomsCompartment);
return true;
}
}
/*
* Wrappers should really be parented to the wrapped parent of the wrapped
* object, but in that case a wrapped global object would have a NULL
* parent without being a proper global object (JSCLASS_IS_GLOBAL). Instead,
* we parent all wrappers to the global object in their home compartment.
* This loses us some transparency, and is generally very cheesy.
*/
HandleObject global = cx->global();
/* Unwrap incoming objects. */
if (vp->isObject()) {
Rooted<JSObject*> obj(cx, &vp->toObject());
if (obj->compartment() == this)
return WrapForSameCompartment(cx, obj, vp);
/* Translate StopIteration singleton. */
if (obj->isStopIteration()) {
RootedValue vvp(cx, *vp);
bool result = js_FindClassObject(cx, JSProto_StopIteration, &vvp);
*vp = vvp;
return result;
}
/* Unwrap the object, but don't unwrap outer windows. */
obj = UnwrapObject(&vp->toObject(), /* stopAtOuter = */ true, &flags);
if (obj->compartment() == this)
return WrapForSameCompartment(cx, obj, vp);
if (cx->runtime->preWrapObjectCallback) {
obj = cx->runtime->preWrapObjectCallback(cx, global, obj, flags);
if (!obj)
return false;
}
if (obj->compartment() == this)
return WrapForSameCompartment(cx, obj, vp);
vp->setObject(*obj);
#ifdef DEBUG
{
JSObject *outer = GetOuterObject(cx, obj);
JS_ASSERT(outer && outer == obj);
}
#endif
}
RootedValue key(cx, *vp);
/* If we already have a wrapper for this value, use it. */
if (WrapperMap::Ptr p = crossCompartmentWrappers.lookup(key)) {
*vp = p->value;
if (vp->isObject()) {
RootedObject obj(cx, &vp->toObject());
JS_ASSERT(obj->isCrossCompartmentWrapper());
if (obj->getParent() != global) {
do {
if (!JSObject::setParent(cx, obj, global))
return false;
obj = obj->getProto();
} while (obj && obj->isCrossCompartmentWrapper());
}
}
return true;
}
if (vp->isString()) {
RootedValue orig(cx, *vp);
JSString *str = vp->toString();
const jschar *chars = str->getChars(cx);
if (!chars)
return false;
JSString *wrapped = js_NewStringCopyN(cx, chars, str->length());
if (!wrapped)
return false;
vp->setString(wrapped);
return crossCompartmentWrappers.put(orig, *vp);
}
RootedObject obj(cx, &vp->toObject());
/*
* Recurse to wrap the prototype. Long prototype chains will run out of
* stack, causing an error in CHECK_RECURSE.
*
* Wrapping the proto before creating the new wrapper and adding it to the
* cache helps avoid leaving a bad entry in the cache on OOM. But note that
* if we wrapped both proto and parent, we would get infinite recursion
* here (since Object.prototype->parent->proto leads to Object.prototype
* itself).
*/
RootedObject proto(cx, obj->getProto());
if (!wrap(cx, proto.address()))
return false;
/*
* We hand in the original wrapped object into the wrap hook to allow
* the wrap hook to reason over what wrappers are currently applied
* to the object.
*/
RootedObject wrapper(cx, cx->runtime->wrapObjectCallback(cx, obj, proto, global, flags));
if (!wrapper)
return false;
// We maintain the invariant that the key in the cross-compartment wrapper
// map is always directly wrapped by the value.
JS_ASSERT(Wrapper::wrappedObject(wrapper) == &key.get().toObject());
vp->setObject(*wrapper);
if (!crossCompartmentWrappers.put(key, *vp))
return false;
return true;
}