static bool forEachSelector(Functor& functor, const CSSSelectorList* selectorList)
{
for (CSSSelector* selector = selectorList->first(); selector; selector = CSSSelectorList::next(selector)) {
if (forEachTagSelector(functor, selector))
return true;
}
return false;
}
static bool forEachTagSelector(Functor& functor, CSSSelector* selector)
{
ASSERT(selector);
do {
if (functor(selector))
return true;
if (CSSSelector* simpleSelector = selector->simpleSelector()) {
if (forEachTagSelector(functor, simpleSelector))
return true;
}
} while ((selector = selector->tagHistory()));
return false;
}
static bool forEachTagSelector(Functor& functor, const CSSSelector& selector)
{
for (const CSSSelector* current = &selector; current; current = current->tagHistory()) {
if (functor(*current))
return true;
if (const CSSSelectorList* selectorList = current->selectorList()) {
for (const CSSSelector* subSelector = selectorList->first(); subSelector; subSelector = CSSSelectorList::next(*subSelector)) {
if (forEachTagSelector(functor, *subSelector))
return true;
}
}
}
return false;
}
static bool forEachTagSelector(Functor& functor, CSSSelector* selector)
{
ASSERT(selector);
do {
if (functor(selector))
return true;
if (CSSSelectorList* selectorList = selector->selectorList()) {
for (CSSSelector* subSelector = selectorList->first(); subSelector; subSelector = CSSSelectorList::next(subSelector)) {
if (forEachTagSelector(functor, subSelector))
return true;
}
}
} while ((selector = selector->tagHistory()));
return false;
}
bool CSSSelectorList::selectorCrossesTreeScopes(size_t index) const
{
SelectorCrossesTreeScopes functor;
return forEachTagSelector(functor, selectorAt(index));
}
bool CSSSelectorList::hasShadowDistributedAt(size_t index) const
{
SelectorHasShadowDistributed functor;
return forEachTagSelector(functor, selectorAt(index));
}
bool CSSSelectorList::hasCombinatorCrossingTreeBoundaryAt(size_t index) const
{
SelectorHasCombinatorCrossingTreeBoundary functor;
return forEachTagSelector(functor, selectorAt(index));
}
bool CSSSelectorList::selectorNeedsUpdatedDistribution(size_t index) const
{
return forEachTagSelector([](const CSSSelector& selector) -> bool {
return selector.relationIsAffectedByPseudoContent() || selector.pseudoType() == CSSSelector::PseudoSlotted || selector.pseudoType() == CSSSelector::PseudoHostContext;
}, selectorAt(index));
}
bool CSSSelectorList::selectorUsesDeepCombinatorOrShadowPseudo(size_t index) const
{
return forEachTagSelector([](const CSSSelector& selector) -> bool {
return selector.relation() == CSSSelector::ShadowDeep || selector.pseudoType() == CSSSelector::PseudoShadow;
}, selectorAt(index));
}
bool CSSSelectorList::selectorHasSlottedPseudo(size_t index) const
{
return forEachTagSelector([](const CSSSelector& selector) -> bool {
return selector.pseudoType() == CSSSelector::PseudoSlotted;
}, selectorAt(index));
}
bool CSSSelectorList::selectorHasContentPseudo(size_t index) const
{
return forEachTagSelector([](const CSSSelector& selector) -> bool {
return selector.relationIsAffectedByPseudoContent();
}, selectorAt(index));
}
