public List keys() {
ArrayList keys = new ArrayList();
for (int x = 0; x < list.size(); x++) {
keys.add(((Node) list.get(x)).name);
}
return keys;
}
public void removeAll(String name) {
for (int x = 0; x < list.size(); x++) {
if (((Node) list.get(x)).name.equals(name)) {
// goes backwards to check next element
list.remove(x--);
}
}
}
public Object set(String name, Object object) {
if (reserved.contains(name)) {
throw new IllegalStateException("Cannot set final element - \"" + name + "\"");
}
if (object == null) {
throw new NullPointerException("Tried to set " + name + " as null.");
}
for (int x = 0; x < list.size(); x++) {
if (((Node) list.get(x)).name.equals(name)) {
// operate on node to affect container scopes
((Node) list.get(x)).object = object;
return object;
}
}
put(name, object);
return object;
}
