| 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 |
|
|
| 1105 |
|
private <T> T[] toArray(Class<T[]> klazz) { |
| 1106 |
|
final Object[] es = elements; |
| 1107 |
|
final T[] a; |
| 1108 |
< |
final int size = size(), head = this.head, end; |
| 1109 |
< |
final int len = Math.min(size, es.length - head); |
| 1110 |
< |
if ((end = head + size) >= 0) { |
| 1108 |
> |
final int head = this.head, tail = this.tail, end; |
| 1109 |
> |
if ((end = tail + ((head <= tail) ? 0 : es.length)) >= 0) { |
| 1110 |
> |
// Uses null extension feature of copyOfRange |
| 1111 |
|
a = Arrays.copyOfRange(es, head, end, klazz); |
| 1112 |
|
} else { |
| 1113 |
|
// integer overflow! |
| 1114 |
< |
a = Arrays.copyOfRange(es, 0, size, klazz); |
| 1115 |
< |
System.arraycopy(es, head, a, 0, len); |
| 1114 |
> |
a = Arrays.copyOfRange(es, 0, end - head, klazz); |
| 1115 |
> |
System.arraycopy(es, head, a, 0, es.length - head); |
| 1116 |
|
} |
| 1117 |
< |
if (tail < head) |
| 1118 |
< |
System.arraycopy(es, 0, a, len, tail); |
| 1117 |
> |
if (end != tail) |
| 1118 |
> |
System.arraycopy(es, 0, a, es.length - head, tail); |
| 1119 |
|
return a; |
| 1120 |
|
} |
| 1121 |
|
|
