| 864 |
|
} |
| 865 |
|
|
| 866 |
|
public boolean tryAdvance(Consumer<? super E> action) { |
| 867 |
< |
if (action == null) |
| 868 |
< |
throw new NullPointerException(); |
| 869 |
< |
final int t, i; |
| 870 |
< |
if ((t = getFence()) == (i = cursor)) |
| 871 |
< |
return false; |
| 867 |
> |
Objects.requireNonNull(action); |
| 868 |
|
final Object[] es = elements; |
| 869 |
+ |
if (fence < 0) { fence = tail; cursor = head; } // late-binding |
| 870 |
+ |
final int i; |
| 871 |
+ |
if ((i = cursor) == fence) |
| 872 |
+ |
return false; |
| 873 |
+ |
E e = nonNullElementAt(es, i); |
| 874 |
|
cursor = inc(i, es.length); |
| 875 |
< |
action.accept(nonNullElementAt(es, i)); |
| 875 |
> |
action.accept(e); |
| 876 |
|
return true; |
| 877 |
|
} |
| 878 |
|
|
