public Selector directJoin(Selector firstI, Selector secondI) {
// if both of them are null, something is very wrong
if (secondI == null) return firstI.clone();
if (firstI == null) return secondI.clone();
Selector first = firstI.clone();
List<SelectorPart> secondParts = ArraysUtils.deeplyClonedList(secondI.getParts());
List<Extend> secondExtends = ArraysUtils.deeplyClonedList(secondI.getExtend());
SelectorPart secondHead = secondParts.get(0);
if (secondHead.isAppender())
return indirectJoinNoClone(
first, secondHead.getLeadingCombinator(), secondParts, secondExtends);
/*
* FIXME: test on old whether survives if first is not simple selector. (say, if:
* (~"escaped") {
* &:pseudo() {
* }
* }
*
*/
SelectorPart attachToHead = first.getLastPart();
directlyJoinParts(attachToHead, secondHead);
secondParts.remove(0);
SelectorCombinator leadingCombinator =
secondParts.isEmpty() ? null : secondParts.get(0).getLeadingCombinator();
return indirectJoinNoClone(first, leadingCombinator, secondParts, secondExtends);
}
public void directlyJoinParts(SelectorPart first, SelectorPart second) {
if (second.hasElement()) {
String secondName = second.hasElement() ? second.getElementName().getName() : "";
if (first.hasSubsequent()) {
ElementSubsequent subsequent = first.getLastSubsequent();
subsequent.extendName(secondName);
} else {
first.extendName(secondName, second.getUnderlyingStructure());
}
}
first.addSubsequent(second.getSubsequent());
first.configureParentToAllChilds();
}
private boolean isEmptySelector(Selector selector) {
if (selector.isCombined()) return false;
SelectorPart head = selector.getHead();
if (head.getType() != ASTCssNodeType.SIMPLE_SELECTOR) return false;
SimpleSelector simpleHead = (SimpleSelector) head;
if (!simpleHead.isEmptyForm() || !simpleHead.isStar()) {
return false;
}
if (simpleHead.hasSubsequent()) return false;
return true;
}