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package parser;
import java.util.*;
public class State implements Comparable<State> {
private Set<Item> itemSet;
private List<Item> items;
private int name;
public State(int name) {
this.itemSet = new HashSet<>();
this.items = new ArrayList<>();
this.name = name;
}
public State() {
this(0);
}
public State(Item item) {
this();
addItem(item);
}
public void setName(int name) {
this.name = name;
}
public int getName() {
return this.name;
}
public List<Item> getItems() {
return this.items;
}
public int size() {
return items.size();
}
/*
* true if the item was added, false if it was already in the set
*/
public boolean addItem(Item item) {
if (!itemSet.contains(item)) {
itemSet.add(item);
items.add(item);
return true;
}
return false;
}
@Override
public int hashCode() {
int hash = 7;
ArrayList<Item> sortedList = new ArrayList<>(items);
sortedList.sort(Comparator.comparingInt(Item::hashCode));
for (Item item : sortedList) {
hash = 37 * hash + Objects.hashCode(item);
}
return hash;
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final State other = (State) obj;
if (items.size() != other.items.size()) {
return false;
}
for (Item item : items) {
if (!other.itemSet.contains(item)) {
return false;
}
}
return true;
}
@Override
public String toString() {
return this.name + ": " + items.toString();
}
@Override
public int compareTo(State o) {
return Integer.valueOf(this.name).compareTo(Integer.valueOf(o.name));
}
}
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