How to use PathNode method of org.assertj.core.util.diff.myers.PathNode class

Best Assertj code snippet using org.assertj.core.util.diff.myers.PathNode.PathNode

Source:MyersDiff.java

...51   */52  public Patch<T> diff(final List<T> original, final List<T> revised) {53    checkArgument(original != null, "original list must not be null");54    checkArgument(revised != null, "revised list must not be null");55    PathNode path;56    try {57      path = buildPath(original, revised);58      return buildRevision(path, original, revised);59    } catch (IllegalStateException e) {60      e.printStackTrace();61      return new Patch<>();62    }63  }64  /**65   * Computes the minimum diffpath that expresses de differences66   * between the original and revised sequences, according67   * to Gene Myers differencing algorithm.68   *69   * @param orig The original sequence.70   * @param rev The revised sequence.71   * @return A minimum {@link PathNode Path} across the differences graph.72   * @throws IllegalStateException if a diff path could not be found.73   */74  public PathNode buildPath(final List<T> orig, final List<T> rev) {75    checkArgument(orig != null, "original sequence is null");76    checkArgument(rev != null, "revised sequence is null");77    // these are local constants78    final int N = orig.size();79    final int M = rev.size();80    final int MAX = N + M + 1;81    final int size = 1 + 2 * MAX;82    final int middle = size / 2;83    final PathNode diagonal[] = new PathNode[size];84    diagonal[middle + 1] = new Snake(0, -1, null);85    for (int d = 0; d < MAX; d++) {86      for (int k = -d; k <= d; k += 2) {87        final int kmiddle = middle + k;88        final int kplus = kmiddle + 1;89        final int kminus = kmiddle - 1;90        PathNode prev;91        int i;92        if ((k == -d) || (k != d && diagonal[kminus].i < diagonal[kplus].i)) {93          i = diagonal[kplus].i;94          prev = diagonal[kplus];95        } else {96          i = diagonal[kminus].i + 1;97          prev = diagonal[kminus];98        }99        diagonal[kminus] = null; // no longer used100        int j = i - k;101        PathNode node = new DiffNode(i, j, prev);102        // orig and rev are zero-based103        // but the algorithm is one-based104        // that's why there's no +1 when indexing the sequences105        while (i < N && j < M && equals(orig.get(i), rev.get(j))) {106          i++;107          j++;108        }109        if (i > node.i) node = new Snake(i, j, node);110        diagonal[kmiddle] = node;111        if (i >= N && j >= M) return diagonal[kmiddle];112      }113      diagonal[middle + d - 1] = null;114    }115    // According to Myers, this cannot happen116    throw new IllegalStateException("could not find a diff path");117  }118  private boolean equals(T orig, T rev) {119    return equalizer.equals(orig, rev);120  }121  /**122   * Constructs a {@link Patch} from a difference path.123   *124   * @param path The path.125   * @param orig The original sequence.126   * @param rev The revised sequence.127   * @return A {@link Patch} script corresponding to the path.128   */129  public Patch<T> buildRevision(PathNode path, List<T> orig, List<T> rev) {130    checkArgument(path != null, "path is null");131    checkArgument(orig != null, "original sequence is null");132    checkArgument(rev != null, "revised sequence is null");133    Patch<T> patch = new Patch<>();134    if (path.isSnake())135      path = path.prev;136    while (path != null && path.prev != null && path.prev.j >= 0) {137      checkState(!path.isSnake(), "bad diffpath: found snake when looking for diff");138      int i = path.i;139      int j = path.j;140      path = path.prev;141      int ianchor = path.i;142      int janchor = path.j;143      Chunk<T> original = new Chunk<>(ianchor, copyOfRange(orig, ianchor, i));...

PathNode

Using AI Code Generation

1import org.assertj.core.util.diff.myers.*;2import java.util.*;3public class ShortestEditScript {4    public static void main(String[] args) {5        String[] s1 = {"a", "b", "c", "a", "b", "c"};6        String[] s2 = {"a", "c", "b", "c", "a", "b", "c"};7        List<Delta<String>> delta = MyersDiff.computeDiff(Arrays.asList(s1), Arrays.asList(s2));8        PathNode path = PathNode.buildPath(delta);9        System.out.println(path.getPath());10    }11}12import java.util.*;13public class PathNode {14    private final Delta<String> delta;15    private final List<PathNode> children = new ArrayList<PathNode>();16    private int length;17    public PathNode(Delta<String> delta) {18        this.delta = delta;19    }20    public void addChild(PathNode child) {21        children.add(child);22    }23    public Delta<String> getDelta() {24        return delta;25    }26    public List<PathNode> getChildren() {27        return children;28    }29    public int getLength() {30        return length;31    }32    public void setLength(int length) {33        this.length = length;34    }35    public static PathNode buildPath(List<Delta<String>> delta) {36        PathNode root = new PathNode(null);37        root.setLength(0);38        PathNode current = root;39        for (Delta<String> d : delta) {40            PathNode node = new PathNode(d);41            current.addChild(node);42            current = node;43        }44        root.computeLength();45        return root;46    }47    private int computeLength()

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