Method subListImpl

output/java_guava/1.4.18/Lists.java:1157–1180

An implementation of List#subList(int, int).

(
    final List<E> list, int fromIndex, int toIndex)

  static <E> List<E> subListImpl(
    final List<E> list, int fromIndex, int toIndex) {
    List<E> wrapper;
    if (list instanceof RandomAccess) {
      wrapper = new RandomAccessListWrapper<E>(list) {
                  @Override
                  public ListIterator<E> listIterator(int index) {
                    return backingList.listIterator(index);
                  }

                  private static final long serialVersionUID = 0;
                };
    } else {
      wrapper = new AbstractListWrapper<E>(list) {
                  @Override
                  public ListIterator<E> listIterator(int index) {
                    return backingList.listIterator(index);
                  }

                  private static final long serialVersionUID = 0;
                };
    }
    return wrapper.subList(fromIndex, toIndex);
  }

  private static class AbstractListWrapper<E> extends AbstractList<E> {
    final List<E> backingList;