void HTMLFormattingElementList::tryToEnsureNoahsArkConditionQuickly(HTMLStackItem* newItem, WillBeHeapVector<RawPtrWillBeMember<HTMLStackItem> >& remainingCandidates)
{
ASSERT(remainingCandidates.isEmpty());
if (m_entries.size() < kNoahsArkCapacity)
return;
// Use a vector with inline capacity to avoid a malloc in the common case
// of a quickly ensuring the condition.
WillBeHeapVector<RawPtrWillBeMember<HTMLStackItem>, 10> candidates;
size_t newItemAttributeCount = newItem->attributes().size();
for (size_t i = m_entries.size(); i; ) {
--i;
Entry& entry = m_entries[i];
if (entry.isMarker())
break;
// Quickly reject obviously non-matching candidates.
HTMLStackItem* candidate = entry.stackItem().get();
if (newItem->localName() != candidate->localName() || newItem->namespaceURI() != candidate->namespaceURI())
continue;
if (candidate->attributes().size() != newItemAttributeCount)
continue;
candidates.append(candidate);
}
if (candidates.size() < kNoahsArkCapacity)
return; // There's room for the new element in the ark. There's no need to copy out the remainingCandidates.
remainingCandidates.appendVector(candidates);
}
const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet>> StyleEngine::activeStyleSheetsForInspector() const
{
if (m_activeTreeScopes.isEmpty())
return documentStyleSheetCollection()->activeAuthorStyleSheets();
WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet>> activeStyleSheets;
activeStyleSheets.appendVector(documentStyleSheetCollection()->activeAuthorStyleSheets());
for (TreeScope* treeScope : m_activeTreeScopes) {
if (TreeScopeStyleSheetCollection* collection = m_styleSheetCollectionMap.get(treeScope))
activeStyleSheets.appendVector(collection->activeAuthorStyleSheets());
}
// FIXME: Inspector needs a vector which has all active stylesheets.
// However, creating such a large vector might cause performance regression.
// Need to implement some smarter solution.
return activeStyleSheets;
}
