SetGenerators.java 文件源码

protected final ContiguousSet<Integer> checkedCreate(SortedSet<Integer> elementsSet) {
  List<Integer> elements = newArrayList(elementsSet);
  /*
   * A ContiguousSet can't have holes. If a test demands a hole, it should be changed so that it
   * doesn't need one, or it should be suppressed for ContiguousSet.
   */
  for (int i = 0; i < elements.size() - 1; i++) {
    assertEquals(elements.get(i) + 1, (int) elements.get(i + 1));
  }
  Range<Integer> range =
      (elements.isEmpty()) ? Range.closedOpen(0, 0) : Range.encloseAll(elements);
  return ContiguousSet.create(range, DiscreteDomain.integers());
}