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src/java.base/share/classes/java/util/stream/StreamSpliterators.java

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 169                     hasNext = fillBuffer();
 170                 }
 171                 return hasNext;
 172             }
 173         }
 174 
 175         /**
 176          * Invokes the shape-specific constructor with the provided arguments
 177          * and returns the result.
 178          */
 179         abstract AbstractWrappingSpliterator<P_IN, P_OUT, ?> wrap(Spliterator<P_IN> s);
 180 
 181         /**
 182          * Initializes buffer, sink chain, and pusher for a shape-specific
 183          * implementation.
 184          */
 185         abstract void initPartialTraversalState();
 186 
 187         @Override
 188         public Spliterator<P_OUT> trySplit() {
 189             if (isParallel && !finished) {
 190                 init();
 191 
 192                 Spliterator<P_IN> split = spliterator.trySplit();
 193                 return (split == null) ? null : wrap(split);
 194             }
 195             else
 196                 return null;
 197         }
 198 
 199         /**
 200          * If the buffer is empty, push elements into the sink chain until
 201          * the source is empty or cancellation is requested.
 202          * @return whether there are elements to consume from the buffer
 203          */
 204         private boolean fillBuffer() {
 205             while (buffer.count() == 0) {
 206                 if (bufferSink.cancellationRequested() || !pusher.getAsBoolean()) {
 207                     if (finished)
 208                         return false;
 209                     else {




 169                     hasNext = fillBuffer();
 170                 }
 171                 return hasNext;
 172             }
 173         }
 174 
 175         /**
 176          * Invokes the shape-specific constructor with the provided arguments
 177          * and returns the result.
 178          */
 179         abstract AbstractWrappingSpliterator<P_IN, P_OUT, ?> wrap(Spliterator<P_IN> s);
 180 
 181         /**
 182          * Initializes buffer, sink chain, and pusher for a shape-specific
 183          * implementation.
 184          */
 185         abstract void initPartialTraversalState();
 186 
 187         @Override
 188         public Spliterator<P_OUT> trySplit() {
 189             if (isParallel && buffer == null && !finished) {
 190                 init();
 191 
 192                 Spliterator<P_IN> split = spliterator.trySplit();
 193                 return (split == null) ? null : wrap(split);
 194             }
 195             else
 196                 return null;
 197         }
 198 
 199         /**
 200          * If the buffer is empty, push elements into the sink chain until
 201          * the source is empty or cancellation is requested.
 202          * @return whether there are elements to consume from the buffer
 203          */
 204         private boolean fillBuffer() {
 205             while (buffer.count() == 0) {
 206                 if (bufferSink.cancellationRequested() || !pusher.getAsBoolean()) {
 207                     if (finished)
 208                         return false;
 209                     else {


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