Esempio n. 1
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  /**
   * Return information about the objects in this Tree.
   *
   * @param t The tree to examine.
   * @return A human-readable String
   */
  public static String toDebugStructureString(Tree t) {
    StringBuilder sb = new StringBuilder();
    String tCl = StringUtils.getShortClassName(t);
    String tfCl = StringUtils.getShortClassName(t.treeFactory());
    String lCl = StringUtils.getShortClassName(t.label());
    String lfCl = StringUtils.getShortClassName(t.label().labelFactory());
    Set<String> otherClasses = new HashSet<String>();
    for (Tree st : t) {
      String stCl = StringUtils.getShortClassName(st);
      String stfCl = StringUtils.getShortClassName(st.treeFactory());
      String slCl = StringUtils.getShortClassName(st.label());
      String slfCl = StringUtils.getShortClassName(st.label().labelFactory());

      if (!tCl.equals(stCl)) {
        otherClasses.add(stCl);
      }
      if (!tfCl.equals(stfCl)) {
        otherClasses.add(stfCl);
      }
      if (!lCl.equals(slCl)) {
        otherClasses.add(slCl);
      }
      if (!lfCl.equals(slfCl)) {
        otherClasses.add(slfCl);
      }
    }
    sb.append("Tree with root of class ").append(tCl).append(" and factory ").append(tfCl);
    sb.append(" with label class ").append(lCl).append(" and factory ").append(lfCl);
    if (!otherClasses.isEmpty()) {
      sb.append(" with the following classes also found within the tree: ").append(otherClasses);
    }
    return sb.toString();
  }
Esempio n. 2
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 Tree prune(Tree tree, int start) {
   if (tree.isLeaf() || tree.isPreTerminal()) {
     return tree;
   }
   // check each node's children for deletion
   List<Tree> children = helper(tree.getChildrenAsList(), start);
   children = prune(children, tree.label(), start, start + tree.yield().size());
   return tree.treeFactory().newTreeNode(tree.label(), children);
 }
Esempio n. 3
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 private static void transformCC(Tree t, List<Tree> left, Tree conj, List<Tree> right) {
   TreeFactory tf = t.treeFactory();
   LabelFactory lf = t.label().labelFactory();
   Tree leftQP = tf.newTreeNode(lf.newLabel("NP"), left);
   Tree rightQP = tf.newTreeNode(lf.newLabel("NP"), right);
   List<Tree> newChildren = new ArrayList<Tree>();
   newChildren.add(leftQP);
   newChildren.add(conj);
   newChildren.add(rightQP);
   t.setChildren(newChildren);
 }
Esempio n. 4
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 public static Tree copyHelper(Tree t, Map<Tree, Tree> newToOld, Map<Tree, Tree> oldToNew) {
   Tree[] kids = t.children();
   Tree[] newKids = new Tree[kids.length];
   for (int i = 0, n = kids.length; i < n; i++) {
     newKids[i] = copyHelper(kids[i], newToOld, oldToNew);
   }
   TreeFactory tf = t.treeFactory();
   if (kids.length == 0) {
     Tree newLeaf = tf.newLeaf(t.label());
     newToOld.put(newLeaf, t);
     oldToNew.put(newLeaf, t);
     return newLeaf;
   }
   Tree newNode = tf.newTreeNode(t.label(), Arrays.asList(newKids));
   newToOld.put(newNode, t);
   oldToNew.put(t, newNode);
   return newNode;
 }
Esempio n. 5
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  private static void transformQP(Tree t) {
    List<Tree> children = t.getChildrenAsList();
    TreeFactory tf = t.treeFactory();
    LabelFactory lf = t.label().labelFactory();

    // create the new XS having the first two children of the QP
    Tree left = tf.newTreeNode(lf.newLabel("XS"), null);
    for (int i = 0; i < 2; i++) {
      left.addChild(children.get(i));
    }

    // remove all the two first children of t before
    for (int i = 0; i < 2; i++) {
      t.removeChild(0);
    }

    // add XS as the first child
    t.addChild(0, left);
  }
 public static Tree untransformTree(Tree tree) {
   TreeFactory tf = tree.treeFactory();
   if (tree.isPrePreTerminal()) {
     if (tree.firstChild().label().value().matches(".*_.")) {
       StringBuilder word = new StringBuilder();
       for (int i = 0; i < tree.children().length; i++) {
         Tree child = tree.children()[i];
         word.append(child.firstChild().label().value());
       }
       Tree newChild = tf.newLeaf(word.toString());
       tree.setChildren(Collections.singletonList(newChild));
     }
   } else {
     for (int i = 0; i < tree.children().length; i++) {
       Tree child = tree.children()[i];
       untransformTree(child);
     }
   }
   return tree;
 }
  public Tree transformTree(Tree tree) {
    TreeFactory tf = tree.treeFactory();
    String tag = tree.label().value();
    if (tree.isPreTerminal()) {
      String word = tree.firstChild().label().value();

      List<Tree> newPreterms = new ArrayList<>();
      for (int i = 0, size = word.length(); i < size; i++) {
        String singleCharLabel = new String(new char[] {word.charAt(i)});
        Tree newLeaf = tf.newLeaf(singleCharLabel);
        String suffix;
        if (useTwoCharTags) {
          if (word.length() == 1 || i == 0) {
            suffix = "_S";
          } else {
            suffix = "_M";
          }
        } else {
          if (word.length() == 1) {
            suffix = "_S";
          } else if (i == 0) {
            suffix = "_B";
          } else if (i == word.length() - 1) {
            suffix = "_E";
          } else {
            suffix = "_M";
          }
        }
        newPreterms.add(tf.newTreeNode(tag + suffix, Collections.<Tree>singletonList(newLeaf)));
      }
      return tf.newTreeNode(tag, newPreterms);
    } else {
      List<Tree> newChildren = new ArrayList<>();
      for (int i = 0; i < tree.children().length; i++) {
        Tree child = tree.children()[i];
        newChildren.add(transformTree(child));
      }
      return tf.newTreeNode(tag, newChildren);
    }
  }