author | jjg |
Fri, 13 Nov 2015 15:55:32 -0800 | |
changeset 33827 | 2d5adfe636ee |
parent 31258 | jdk/test/java/util/stream/bootlib/java/util/stream/IntStreamTestScenario.java@8e44e5e2563e |
child 43792 | 05d6b8f2eff5 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package java.util.stream; |
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import java.util.Collections; |
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import java.util.EnumSet; |
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import java.util.PrimitiveIterator; |
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import java.util.Set; |
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import java.util.Spliterator; |
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import java.util.function.Consumer; |
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import java.util.function.Function; |
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import java.util.function.IntConsumer; |
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/** |
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* Test scenarios for int streams. |
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* |
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* Each scenario is provided with a data source, a function that maps a fresh |
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* stream (as provided by the data source) to a new stream, and a sink to |
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* receive results. Each scenario describes a different way of computing the |
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* stream contents. The test driver will ensure that all scenarios produce |
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* the same output (modulo allowable differences in ordering). |
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*/ |
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@SuppressWarnings({"rawtypes", "unchecked"}) |
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public enum IntStreamTestScenario implements OpTestCase.BaseStreamTestScenario { |
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STREAM_FOR_EACH(false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m) { |
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IntStream s = m.apply(source); |
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if (s.isParallel()) { |
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s = s.sequential(); |
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} |
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s.forEach(b); |
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} |
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}, |
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STREAM_TO_ARRAY(false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m) { |
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for (int t : m.apply(source).toArray()) { |
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b.accept(t); |
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} |
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} |
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}, |
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STREAM_ITERATOR(false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m) { |
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for (PrimitiveIterator.OfInt seqIter = m.apply(source).iterator(); seqIter.hasNext(); ) |
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b.accept(seqIter.nextInt()); |
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} |
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}, |
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// Wrap as stream, and spliterate then iterate in pull mode |
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STREAM_SPLITERATOR(false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m) { |
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for (Spliterator.OfInt spl = m.apply(source).spliterator(); spl.tryAdvance(b); ) { |
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} |
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} |
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}, |
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// Wrap as stream, spliterate, then split a few times mixing advances with forEach |
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STREAM_SPLITERATOR_WITH_MIXED_TRAVERSE_AND_SPLIT(false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m) { |
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SpliteratorTestHelper.mixedTraverseAndSplit(b, m.apply(source).spliterator()); |
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} |
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}, |
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// Wrap as stream, and spliterate then iterate in pull mode |
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STREAM_SPLITERATOR_FOREACH(false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m) { |
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m.apply(source).spliterator().forEachRemaining(b); |
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} |
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}, |
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PAR_STREAM_SEQUENTIAL_FOR_EACH(true) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m) { |
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m.apply(source).sequential().forEach(b); |
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} |
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}, |
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// Wrap as parallel stream + forEachOrdered |
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PAR_STREAM_FOR_EACH_ORDERED(true) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m) { |
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// @@@ Want to explicitly select ordered equalator |
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m.apply(source).forEachOrdered(b); |
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} |
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}, |
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// Wrap as stream, and spliterate then iterate sequentially |
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PAR_STREAM_SPLITERATOR(true) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m) { |
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for (Spliterator.OfInt spl = m.apply(source).spliterator(); spl.tryAdvance(b); ) { |
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} |
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} |
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}, |
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// Wrap as stream, and spliterate then iterate sequentially |
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PAR_STREAM_SPLITERATOR_FOREACH(true) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m) { |
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m.apply(source).spliterator().forEachRemaining(b); |
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} |
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}, |
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PAR_STREAM_TO_ARRAY(true) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m) { |
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for (int t : m.apply(source).toArray()) |
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b.accept(t); |
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} |
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}, |
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// Wrap as parallel stream, get the spliterator, wrap as a stream + toArray |
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PAR_STREAM_SPLITERATOR_STREAM_TO_ARRAY(true) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m) { |
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IntStream s = m.apply(source); |
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Spliterator.OfInt sp = s.spliterator(); |
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IntStream ss = StreamSupport.intStream(() -> sp, |
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StreamOpFlag.toCharacteristics(OpTestCase.getStreamFlags(s)) |
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| (sp.getExactSizeIfKnown() < 0 ? 0 : Spliterator.SIZED), |
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true); |
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for (int t : ss.toArray()) |
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b.accept(t); |
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} |
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}, |
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PAR_STREAM_TO_ARRAY_CLEAR_SIZED(true) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m) { |
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S_IN pipe1 = (S_IN) OpTestCase.chain(source, |
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new FlagDeclaringOp(StreamOpFlag.NOT_SIZED, data.getShape())); |
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IntStream pipe2 = m.apply(pipe1); |
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|
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for (int t : pipe2.toArray()) |
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b.accept(t); |
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} |
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}, |
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|
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// Wrap as parallel stream + forEach synchronizing |
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PAR_STREAM_FOR_EACH(true, false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m) { |
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m.apply(source).forEach(e -> { |
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synchronized (data) { |
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b.accept(e); |
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} |
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}); |
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} |
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}, |
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|
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// Wrap as parallel stream + forEach synchronizing and clear SIZED flag |
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PAR_STREAM_FOR_EACH_CLEAR_SIZED(true, false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m) { |
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S_IN pipe1 = (S_IN) OpTestCase.chain(source, |
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new FlagDeclaringOp(StreamOpFlag.NOT_SIZED, data.getShape())); |
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m.apply(pipe1).forEach(e -> { |
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synchronized (data) { |
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b.accept(e); |
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} |
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}); |
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} |
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}, |
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; |
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|
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// The set of scenarios that clean the SIZED flag |
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public static final Set<IntStreamTestScenario> CLEAR_SIZED_SCENARIOS = Collections.unmodifiableSet( |
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EnumSet.of(PAR_STREAM_TO_ARRAY_CLEAR_SIZED, PAR_STREAM_FOR_EACH_CLEAR_SIZED)); |
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|
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private final boolean isParallel; |
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|
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private final boolean isOrdered; |
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|
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IntStreamTestScenario(boolean isParallel) { |
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this(isParallel, true); |
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} |
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|
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IntStreamTestScenario(boolean isParallel, boolean isOrdered) { |
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this.isParallel = isParallel; |
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this.isOrdered = isOrdered; |
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} |
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|
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public StreamShape getShape() { |
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return StreamShape.INT_VALUE; |
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} |
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|
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public boolean isParallel() { |
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return isParallel; |
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} |
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|
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public boolean isOrdered() { |
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return isOrdered; |
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} |
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|
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public <T, U, S_IN extends BaseStream<T, S_IN>, S_OUT extends BaseStream<U, S_OUT>> |
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void run(TestData<T, S_IN> data, Consumer<U> b, Function<S_IN, S_OUT> m) { |
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try (S_IN source = getStream(data)) { |
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run(data, source, (IntConsumer) b, (Function<S_IN, IntStream>) m); |
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} |
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} |
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|
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abstract <T, S_IN extends BaseStream<T, S_IN>> |
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void run(TestData<T, S_IN> data, S_IN source, IntConsumer b, Function<S_IN, IntStream> m); |
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|
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} |