Package one.util.streamex
Class HeadTailSpliterator<T,U>
- java.lang.Object
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- java.util.Spliterators.AbstractSpliterator<U>
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- one.util.streamex.HeadTailSpliterator<T,U>
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- All Implemented Interfaces:
java.util.Spliterator<U>
,Internals.TailSpliterator<U>
final class HeadTailSpliterator<T,U> extends java.util.Spliterators.AbstractSpliterator<U> implements Internals.TailSpliterator<U>
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Nested Class Summary
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Nested classes/interfaces inherited from interface java.util.Spliterator
java.util.Spliterator.OfDouble, java.util.Spliterator.OfInt, java.util.Spliterator.OfLong, java.util.Spliterator.OfPrimitive<T extends java.lang.Object,T_CONS extends java.lang.Object,T_SPLITR extends java.util.Spliterator.OfPrimitive<T,T_CONS,T_SPLITR>>
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Field Summary
Fields Modifier and Type Field Description (package private) StreamContext
context
private java.util.function.Supplier<? extends java.util.stream.Stream<U>>
emptyMapper
private java.util.function.BiFunction<? super T,? super StreamEx<T>,? extends java.util.stream.Stream<U>>
mapper
private java.util.Spliterator<T>
source
private java.util.Spliterator<U>
target
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description long
estimateSize()
java.util.Spliterator<U>
forEachOrTail(java.util.function.Consumer<? super U> action)
Traverses this spliterator and returns null if traversal is completed or tail spliterator if it must be used for further traversal.void
forEachRemaining(java.util.function.Consumer<? super U> action)
private boolean
init()
boolean
tryAdvance(java.util.function.Consumer<? super U> action)
java.util.Spliterator<U>
tryAdvanceOrTail(java.util.function.Consumer<? super U> action)
Either advances by one element feeding it to consumer and returns this or returns tail spliterator (this spliterator becomes invalid and tail must be used instead) or returns null if traversal finished.
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Field Detail
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source
private java.util.Spliterator<T> source
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mapper
private java.util.function.BiFunction<? super T,? super StreamEx<T>,? extends java.util.stream.Stream<U>> mapper
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emptyMapper
private java.util.function.Supplier<? extends java.util.stream.Stream<U>> emptyMapper
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target
private java.util.Spliterator<U> target
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context
StreamContext context
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Method Detail
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tryAdvance
public boolean tryAdvance(java.util.function.Consumer<? super U> action)
- Specified by:
tryAdvance
in interfacejava.util.Spliterator<T>
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tryAdvanceOrTail
public java.util.Spliterator<U> tryAdvanceOrTail(java.util.function.Consumer<? super U> action)
Description copied from interface:Internals.TailSpliterator
Either advances by one element feeding it to consumer and returns this or returns tail spliterator (this spliterator becomes invalid and tail must be used instead) or returns null if traversal finished.- Specified by:
tryAdvanceOrTail
in interfaceInternals.TailSpliterator<T>
- Parameters:
action
- to feed the next element into- Returns:
- tail spliterator, this or null
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forEachRemaining
public void forEachRemaining(java.util.function.Consumer<? super U> action)
- Specified by:
forEachRemaining
in interfacejava.util.Spliterator<T>
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forEachOrTail
public java.util.Spliterator<U> forEachOrTail(java.util.function.Consumer<? super U> action)
Description copied from interface:Internals.TailSpliterator
Traverses this spliterator and returns null if traversal is completed or tail spliterator if it must be used for further traversal.- Specified by:
forEachOrTail
in interfaceInternals.TailSpliterator<T>
- Parameters:
action
- to feed the elements into- Returns:
- tail spliterator or null (never returns this)
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init
private boolean init()
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