@Nullable
public static <T> T getParentOfType(
final DomElement element, final Class<T> requiredClass, final boolean strict) {
for (DomElement curElement = strict && element != null ? element.getParent() : element;
curElement != null;
curElement = curElement.getParent()) {
if (requiredClass.isInstance(curElement)) {
return (T) curElement;
}
}
return null;
}
@Nullable
public static List<JavaMethod> getFixedPath(DomElement element) {
assert element.isValid();
final LinkedList<JavaMethod> methods = new LinkedList<>();
while (true) {
final DomElement parent = element.getParent();
if (parent instanceof DomFileElement) {
break;
}
final JavaMethod method = getGetterMethod(element, parent);
if (method == null) {
return null;
}
methods.addFirst(method);
element = element.getParent();
}
return methods;
}
/**
* @param domElement DomElement to search root of
* @return the topmost valid DomElement being a parent of the given one. May be and may be not
* DomFileElement. If root tag has changed, file may lose its domness, so there will be no
* DomFileElement, but the inner DomElement's will be still alive because the underlying XML
* tags are valid
*/
@NotNull
public static DomElement getRoot(@NotNull DomElement domElement) {
while (true) {
final DomElement parent = domElement.getParent();
if (parent == null) {
return domElement;
}
domElement = parent;
}
}
public static <T extends DomElement> DomFileElement<T> getFileElement(
@NotNull DomElement element) {
if (element instanceof DomFileElement) {
return (DomFileElement) element;
}
DomFileElement fileElement = element.getUserData(FILE_ELEMENT_KEY);
if (fileElement == null) {
DomElement parent = element.getParent();
if (parent != null) {
fileElement = getFileElement(parent);
}
element.putUserData(FILE_ELEMENT_KEY, fileElement);
}
return fileElement;
}
public static boolean isAncestor(
@NotNull DomElement ancestor, @NotNull DomElement descendant, boolean strict) {
if (!strict && ancestor.equals(descendant)) return true;
final DomElement parent = descendant.getParent();
return parent != null && isAncestor(ancestor, parent, false);
}