本文整理汇总了Java中java.util.Spliterator.getExactSizeIfKnown方法的典型用法代码示例。如果您正苦于以下问题：Java Spliterator.getExactSizeIfKnown方法的具体用法？Java Spliterator.getExactSizeIfKnown怎么用？Java Spliterator.getExactSizeIfKnown使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类java.util.Spliterator的用法示例。
在下文中一共展示了Spliterator.getExactSizeIfKnown方法的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: forEach
import java.util.Spliterator; //导入方法依赖的package包/类
@Override
<E> void forEach(Spliterator<E> spliterator, Consumer<? super E> consumer) {
for (Spliterator<E> prefix = trySplitTestingSize(spliterator);
prefix != null;
prefix = trySplitTestingSize(spliterator)) {
forEach(prefix, consumer);
}
long size = spliterator.getExactSizeIfKnown();
long[] counter = {0};
spliterator.forEachRemaining(e -> {
consumer.accept(e);
counter[0]++;
});
if (size >= 0) {
assertEquals(size, counter[0]);
}
}
示例2: testSplitOnce
import java.util.Spliterator; //导入方法依赖的package包/类
private static <T, S extends Spliterator<T>> void testSplitOnce(
Collection<T> exp,
Supplier<S> supplier,
UnaryOperator<Consumer<T>> boxingAdapter) {
S spliterator = supplier.get();
long sizeIfKnown = spliterator.getExactSizeIfKnown();
boolean isOrdered = spliterator.hasCharacteristics(Spliterator.ORDERED);
ArrayList<T> fromSplit = new ArrayList<>();
Spliterator<T> s1 = supplier.get();
Spliterator<T> s2 = s1.trySplit();
long s1Size = s1.getExactSizeIfKnown();
long s2Size = (s2 != null) ? s2.getExactSizeIfKnown() : 0;
Consumer<T> addToFromSplit = boxingAdapter.apply(fromSplit::add);
if (s2 != null)
s2.forEachRemaining(addToFromSplit);
s1.forEachRemaining(addToFromSplit);
if (sizeIfKnown >= 0) {
assertEquals(sizeIfKnown, fromSplit.size());
if (s1Size >= 0 && s2Size >= 0)
assertEquals(sizeIfKnown, s1Size + s2Size);
}
assertContents(fromSplit, exp, isOrdered);
}
示例3: testSplitOnce
import java.util.Spliterator; //导入方法依赖的package包/类
private static <T, S extends Spliterator<T>> void testSplitOnce(
Collection<T> exp,
Supplier<S> supplier,
UnaryOperator<Consumer<T>> boxingAdapter) {
S spliterator = supplier.get();
long sizeIfKnown = spliterator.getExactSizeIfKnown();
boolean isOrdered = spliterator.hasCharacteristics(Spliterator.ORDERED);
ArrayList<T> fromSplit = new ArrayList<>();
Spliterator<T> s1 = supplier.get();
Spliterator<T> s2 = s1.trySplit();
long s1Size = s1.getExactSizeIfKnown();
long s2Size = (s2 != null) ? s2.getExactSizeIfKnown() : 0;
Consumer<T> addToFromSplit = boxingAdapter.apply(fromSplit::add);
if (s2 != null)
s2.forEachRemaining(addToFromSplit);
s1.forEachRemaining(addToFromSplit);
if (sizeIfKnown >= 0) {
assertEquals(sizeIfKnown, fromSplit.size());
if (s1Size >= 0 && s2Size >= 0)
assertEquals(sizeIfKnown, s1Size + s2Size);
}
assertContents(fromSplit, exp, isOrdered);
}
示例4: testSplitOnce
import java.util.Spliterator; //导入方法依赖的package包/类
private static <T, S extends Spliterator<T>> void testSplitOnce(
Collection<T> exp,
Supplier<S> supplier,
UnaryOperator<Consumer<T>> boxingAdapter,
ContentAsserter<T> asserter) {
S spliterator = supplier.get();
long sizeIfKnown = spliterator.getExactSizeIfKnown();
boolean isOrdered = spliterator.hasCharacteristics(Spliterator.ORDERED);
ArrayList<T> fromSplit = new ArrayList<>();
Spliterator<T> s1 = supplier.get();
Spliterator<T> s2 = s1.trySplit();
long s1Size = s1.getExactSizeIfKnown();
long s2Size = (s2 != null) ? s2.getExactSizeIfKnown() : 0;
Consumer<T> addToFromSplit = boxingAdapter.apply(fromSplit::add);
if (s2 != null)
s2.forEachRemaining(addToFromSplit);
s1.forEachRemaining(addToFromSplit);
if (sizeIfKnown >= 0) {
assertEquals(sizeIfKnown, fromSplit.size());
if (s1Size >= 0 && s2Size >= 0)
assertEquals(sizeIfKnown, s1Size + s2Size);
}
asserter.assertContents(fromSplit, exp, isOrdered);
}
示例5: exactOutputSizeIfKnown
import java.util.Spliterator; //导入方法依赖的package包/类
@Override
final <P_IN> long exactOutputSizeIfKnown(Spliterator<P_IN> spliterator) {
return StreamOpFlag.SIZED.isKnown(getStreamAndOpFlags()) ? spliterator.getExactSizeIfKnown() : -1;
}
示例6: testSplitUntilNull
import java.util.Spliterator; //导入方法依赖的package包/类
private static <T> void testSplitUntilNull(SplitNode<T> e) {
// Use an explicit stack to avoid a StackOverflowException when testing a Spliterator
// that when repeatedly split produces a right-balanced (and maybe degenerate) tree, or
// for a spliterator that is badly behaved.
Deque<SplitNode<T>> stack = new ArrayDeque<>();
stack.push(e);
int iteration = 0;
while (!stack.isEmpty()) {
assertTrue(iteration++ < MAXIMUM_STACK_CAPACITY, "Exceeded maximum stack modification count of 1 << 18");
e = stack.pop();
Spliterator<T> parentAndRightSplit = e.s;
long parentEstimateSize = parentAndRightSplit.estimateSize();
assertTrue(parentEstimateSize >= 0,
String.format("Split size estimate %d < 0", parentEstimateSize));
long parentSize = parentAndRightSplit.getExactSizeIfKnown();
Spliterator<T> leftSplit = parentAndRightSplit.trySplit();
if (leftSplit == null) {
parentAndRightSplit.forEachRemaining(e.c);
continue;
}
assertSpliterator(leftSplit, e.rootCharacteristics);
assertSpliterator(parentAndRightSplit, e.rootCharacteristics);
if (parentEstimateSize != Long.MAX_VALUE && leftSplit.estimateSize() > 0
&& parentAndRightSplit.estimateSize() > 0) {
assertTrue(leftSplit.estimateSize() < parentEstimateSize,
String.format("Left split size estimate %d >= parent split size estimate %d",
leftSplit.estimateSize(), parentEstimateSize));
assertTrue(parentAndRightSplit.estimateSize() < parentEstimateSize,
String.format("Right split size estimate %d >= parent split size estimate %d",
leftSplit.estimateSize(), parentEstimateSize));
}
else {
assertTrue(leftSplit.estimateSize() <= parentEstimateSize,
String.format("Left split size estimate %d > parent split size estimate %d",
leftSplit.estimateSize(), parentEstimateSize));
assertTrue(parentAndRightSplit.estimateSize() <= parentEstimateSize,
String.format("Right split size estimate %d > parent split size estimate %d",
leftSplit.estimateSize(), parentEstimateSize));
}
long leftSize = leftSplit.getExactSizeIfKnown();
long rightSize = parentAndRightSplit.getExactSizeIfKnown();
if (parentSize >= 0 && leftSize >= 0 && rightSize >= 0)
assertEquals(parentSize, leftSize + rightSize,
String.format("exact left split size %d + exact right split size %d != parent exact split size %d",
leftSize, rightSize, parentSize));
// Add right side to stack first so left side is popped off first
stack.push(e.fromSplit(parentAndRightSplit));
stack.push(e.fromSplit(leftSplit));
}
}
示例7: testSplitUntilNull
import java.util.Spliterator; //导入方法依赖的package包/类
private static <T> void testSplitUntilNull(SplitNode<T> e) {
// Use an explicit stack to avoid a StackOverflowException when testing a Spliterator
// that when repeatedly split produces a right-balanced (and maybe degenerate) tree, or
// for a spliterator that is badly behaved.
Deque<SplitNode<T>> stack = new ArrayDeque<>();
stack.push(e);
int iteration = 0;
while (!stack.isEmpty()) {
assertTrue(iteration++ < MAXIMUM_STACK_CAPACITY, "Exceeded maximum stack modification count of 1 << 18");
e = stack.pop();
Spliterator<T> parentAndRightSplit = e.s;
long parentEstimateSize = parentAndRightSplit.estimateSize();
assertTrue(parentEstimateSize >= 0,
String.format("Split size estimate %d < 0", parentEstimateSize));
long parentSize = parentAndRightSplit.getExactSizeIfKnown();
Spliterator<T> leftSplit = parentAndRightSplit.trySplit();
if (leftSplit == null) {
parentAndRightSplit.forEachRemaining(e.c);
continue;
}
assertSpliterator(leftSplit, e.rootCharacteristics);
assertSpliterator(parentAndRightSplit, e.rootCharacteristics);
if (parentEstimateSize != Long.MAX_VALUE && leftSplit.estimateSize() > 0 && parentAndRightSplit.estimateSize() > 0) {
assertTrue(leftSplit.estimateSize() < parentEstimateSize,
String.format("Left split size estimate %d >= parent split size estimate %d", leftSplit.estimateSize(), parentEstimateSize));
assertTrue(parentAndRightSplit.estimateSize() < parentEstimateSize,
String.format("Right split size estimate %d >= parent split size estimate %d", leftSplit.estimateSize(), parentEstimateSize));
}
else {
assertTrue(leftSplit.estimateSize() <= parentEstimateSize,
String.format("Left split size estimate %d > parent split size estimate %d", leftSplit.estimateSize(), parentEstimateSize));
assertTrue(parentAndRightSplit.estimateSize() <= parentEstimateSize,
String.format("Right split size estimate %d > parent split size estimate %d", leftSplit.estimateSize(), parentEstimateSize));
}
long leftSize = leftSplit.getExactSizeIfKnown();
long rightSize = parentAndRightSplit.getExactSizeIfKnown();
if (parentSize >= 0 && leftSize >= 0 && rightSize >= 0)
assertEquals(parentSize, leftSize + rightSize,
String.format("exact left split size %d + exact right split size %d != parent exact split size %d",
leftSize, rightSize, parentSize));
// Add right side to stack first so left side is popped off first
stack.push(e.fromSplit(parentAndRightSplit));
stack.push(e.fromSplit(leftSplit));
}
}