public Parse getHead()

in opennlp-tools/src/main/java/opennlp/tools/parser/lang/en/HeadRules.java [126:189]
64 lines of code
23 McCabe index (conditional complexity)

  public Parse getHead(Parse[] constituents, String type) {
    if (Parser.TOK_NODE.equals(constituents[0].getType())) {
      return null;
    }
    HeadRule hr;
    if (type.equals("NP") || type.equals("NX")) {
      String[] tags1 = { "NN", "NNP", "NNPS", "NNS", "NX", "JJR", "POS" };
      for (int ci = constituents.length - 1; ci >= 0; ci--) {
        for (int ti = tags1.length - 1; ti >= 0; ti--) {
          if (constituents[ci].getType().equals(tags1[ti])) {
            return constituents[ci].getHead();
          }
        }
      }
      for (Parse constituent : constituents) {
        if (constituent.getType().equals("NP")) {
          return constituent.getHead();
        }
      }
      String[] tags2 = { "$", "ADJP", "PRN" };
      for (int ci = constituents.length - 1; ci >= 0; ci--) {
        for (int ti = tags2.length - 1; ti >= 0; ti--) {
          if (constituents[ci].getType().equals(tags2[ti])) {
            return constituents[ci].getHead();
          }
        }
      }
      String[] tags3 = { "JJ", "JJS", "RB", "QP" };
      for (int ci = constituents.length - 1; ci >= 0; ci--) {
        for (int ti = tags3.length - 1; ti >= 0; ti--) {
          if (constituents[ci].getType().equals(tags3[ti])) {
            return constituents[ci].getHead();
          }
        }
      }
      return constituents[constituents.length - 1].getHead();
    }
    else if ((hr = headRules.get(type)) != null) {
      String[] tags = hr.tags;
      int cl = constituents.length;
      int tl = tags.length;
      if (hr.leftToRight) {
        for (String tag : tags) {
          for (Parse constituent : constituents) {
            if (constituent.getType().equals(tag)) {
              return constituent.getHead();
            }
          }
        }
        return constituents[0].getHead();
      }
      else {
        for (String tag : tags) {
          for (int ci = cl - 1; ci >= 0; ci--) {
            if (constituents[ci].getType().equals(tag)) {
              return constituents[ci].getHead();
            }
          }
        }
        return constituents[cl - 1].getHead();
      }
    }
    return constituents[constituents.length - 1].getHead();
  }