1 /*
   2  * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any

 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 {

   1 /*
   2  * Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any

 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 {