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31
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1 package alice.jungle.operations;
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1
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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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67
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9 @Message
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1
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10 public class NetworkNodePath implements NodePath
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11 {
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12 LinkedList<Integer> path;
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13
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14 public NetworkNodePath() {
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15 path = new LinkedList<Integer>();
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16 }
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17
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18 private NetworkNodePath(LinkedList<Integer> _path) {
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19 path = _path;
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20 }
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21
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22 @Override
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23 public Iterator<Integer> iterator() {
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24 return path.iterator();
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25 }
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26
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27 @Override
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28 public NetworkNodePath add(int _pos) {
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29 LinkedList<Integer> newPath = copyPath();
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30 newPath.add(_pos);
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31 return new NetworkNodePath(newPath);
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32 }
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33
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34 @Override
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35 public Pair<Integer, NodePath> pop() {
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36 LinkedList<Integer> cPath = copyPath();
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37 int e = cPath.getFirst();
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38 cPath.remove();
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39 return new Pair<Integer, NodePath>(e, new NetworkNodePath(cPath));
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40 }
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41
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42 @Override
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43 public int size() {
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44 return path.size();
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45 }
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46
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47 private LinkedList<Integer> copyPath() {
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48 LinkedList<Integer> newPath = new LinkedList<Integer>();
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49 for (Integer i : path) {
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50 newPath.add(i);
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51 }
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52 return newPath;
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53 }
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54
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55 @Override
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56 public String toString() {
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57 return path.toString();
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58 }
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59
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60 }
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