bool InferredType::willStoreValueSlow(VM& vm, PropertyName propertyName, JSValue value)
{
Descriptor oldType;
Descriptor myType;
bool result;
{
ConcurrentJSLocker locker(m_lock);
oldType = descriptor(locker);
myType = Descriptor::forValue(value);
myType.merge(oldType);
ASSERT(oldType != myType); // The type must have changed if we're on the slow path.
bool setResult = set(locker, vm, myType);
result = kind(locker) != Top;
if (!setResult)
return result;
}
InferredTypeFireDetail detail(this, propertyName.uid(), oldType, myType, value);
m_watchpointSet.fireAll(vm, detail);
return result;
}
bool InferredType::Descriptor::subsumes(const Descriptor& other) const
{
Descriptor merged = *this;
merged.merge(other);
return *this == merged;
}