private static boolean hasParentInSet(IJavaScriptElement elem, Set set) {
IJavaScriptElement parent = elem.getParent();
while (parent != null) {
if (set.contains(parent)) return true;
parent = parent.getParent();
}
return false;
}
/**
* Returns a collection of all the parents of this element up to (but not including) the root of
* this tree in bottom-up order. If the given element is not a descendant of the root of this
* tree, <code>null</code> is returned.
*/
private ArrayList getAncestors(IJavaScriptElement element) {
IJavaScriptElement parent = element.getParent();
if (parent == null) {
return null;
}
ArrayList parents = new ArrayList();
while (!parent.equals(this.changedElement)) {
parents.add(parent);
parent = parent.getParent();
if (parent == null) {
return null;
}
}
parents.trimToSize();
return parents;
}
/** Returns whether the two java elements are equals and have the same parent. */
protected boolean equalsAndSameParent(IJavaScriptElement e1, IJavaScriptElement e2) {
IJavaScriptElement parent1;
return e1.equals(e2) && ((parent1 = e1.getParent()) != null) && parent1.equals(e2.getParent());
}