@Nullable
public static JetClassOrObject getOutermostClassOrObject(
@NotNull JetClassOrObject classOrObject) {
JetClassOrObject current = classOrObject;
while (true) {
PsiElement parent = current.getParent();
assert classOrObject.getParent() != null : "Class with no parent: " + classOrObject.getText();
if (parent instanceof PsiFile) {
return current;
}
if (parent instanceof JetClassObject) {
// current class IS the class object declaration
parent = parent.getParent();
assert parent instanceof JetClassBody
: "Parent of class object is not a class body: " + parent;
}
if (!(parent instanceof JetClassBody)) {
// It is a local class, no legitimate outer
return current;
}
current = (JetClassOrObject) parent.getParent();
}
}
public static void deleteClass(@NotNull JetClassOrObject clazz) {
CheckUtil.checkWritable(clazz);
JetFile file = (JetFile) clazz.getContainingFile();
List<JetDeclaration> declarations = file.getDeclarations();
if (declarations.size() == 1) {
file.delete();
} else {
PsiElement parent = clazz.getParent();
CodeEditUtil.removeChild(parent.getNode(), clazz.getNode());
}
}