void ChildListMutationAccumulator::leaveMutationScope()
{
ASSERT(m_mutationScopes > 0);
if (!--m_mutationScopes) {
if (!isEmpty())
enqueueMutationRecord();
accumulatorMap().remove(m_target.get());
}
}
PassRefPtr<ChildListMutationAccumulator> ChildListMutationAccumulator::getOrCreate(Node& target)
{
AccumulatorMap::AddResult result = accumulatorMap().add(&target, nullptr);
RefPtr<ChildListMutationAccumulator> accumulator;
if (!result.isNewEntry)
accumulator = result.storedValue->value;
else {
accumulator = adoptRef(new ChildListMutationAccumulator(PassRefPtr<Node>(target), MutationObserverInterestGroup::createForChildListMutation(target)));
result.storedValue->value = accumulator.get();
}
return accumulator.release();
}
ChildListMutationAccumulator::~ChildListMutationAccumulator()
{
if (!isEmpty())
enqueueMutationRecord();
accumulatorMap().remove(&m_target.get());
}