I want to find start and end lines of all methods and types(class, enum, interface, annotation) of file. I found solution only for methods but not for nested types. Is it possible with Roaster?

My solution for methods:

private int[] getMethodRows(MethodSource ms, JavaSource js) {

   int[] rows = new int[2];
   rows[0] = ms.getLineNumber();
   String s = js.toUnformattedString();

  int i = getIndexOfRow(rows[0], s.toCharArray());
  int j = i + ms.getEndPosition() - ms.getStartPosition();
  rows[1] = countOfRow(s.substring(i, j).toCharArray()) + rows[0];
  return rows;
}

private int countOfRow(char[] s) {

   int i = 0;
  for (char a :

  s) {

   if (a == '\n') {

  i++;
   }

  }

   return i;
}