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1 package jungle.test.operations;
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2
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3 import java.util.Iterator;
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4 import java.util.LinkedList;
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5
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6 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.NodePath;
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7 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Pair;
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8
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9 public class NetworkNodePath implements NodePath
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10 {
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11 LinkedList<Integer> path;
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12
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13 public NetworkNodePath() {
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14 path = new LinkedList<Integer>();
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15 }
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16
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17 private NetworkNodePath(LinkedList<Integer> _path) {
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18 path = _path;
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19 }
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20
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21 @Override
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22 public Iterator<Integer> iterator() {
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23 return path.iterator();
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24 }
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25
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26 @Override
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27 public NetworkNodePath add(int _pos) {
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28 LinkedList<Integer> newPath = copyPath();
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29 newPath.add(_pos);
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30 return new NetworkNodePath(newPath);
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31 }
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32
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33 @Override
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34 public Pair<Integer, NodePath> pop() {
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35 LinkedList<Integer> cPath = copyPath();
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36 int e = cPath.getFirst();
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37 cPath.remove();
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38 return new Pair<Integer, NodePath>(e, new NetworkNodePath(cPath));
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39 }
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40
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41 @Override
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42 public int size() {
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43 return path.size();
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44 }
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45
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46 private LinkedList<Integer> copyPath() {
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47 LinkedList<Integer> newPath = new LinkedList<Integer>();
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48 for (Integer i : path) {
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49 newPath.add(i);
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50 }
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51 return newPath;
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52 }
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53
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54 @Override
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55 public String toString() {
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56 return path.toString();
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57 }
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58
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59 }
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