| /* |
| * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package org.openjdk.testlib.java.util.stream; |
| |
| import java.util.Spliterator; |
| import java.util.function.IntFunction; |
| import java.util.stream.*; |
| |
| /** |
| * The base type for a stateful test operation. |
| */ |
| interface StatefulTestOp<E> extends IntermediateTestOp<E, E> { |
| |
| @SuppressWarnings({"rawtypes", "unchecked"}) |
| public static<T> AbstractPipeline chain(AbstractPipeline upstream, |
| StatefulTestOp op) { |
| switch (op.outputShape()) { |
| case REFERENCE: |
| return new ReferencePipeline.StatefulOp<Object, T>(upstream, op.inputShape(), op.opGetFlags()) { |
| @Override |
| public Sink opWrapSink(int flags, Sink sink) { |
| return op.opWrapSink(flags, isParallel(), sink); |
| } |
| |
| @Override |
| public <P_IN> Spliterator<T> opEvaluateParallelLazy(PipelineHelper<T> helper, |
| Spliterator<P_IN> spliterator) { |
| return op.opEvaluateParallelLazy(helper, spliterator); |
| } |
| |
| @Override |
| public <P_IN> Node<T> opEvaluateParallel(PipelineHelper<T> helper, |
| Spliterator<P_IN> spliterator, |
| IntFunction<T[]> generator) { |
| return op.opEvaluateParallel(helper, spliterator, generator); |
| } |
| }; |
| case INT_VALUE: |
| return new IntPipeline.StatefulOp<Object>(upstream, op.inputShape(), op.opGetFlags()) { |
| @Override |
| public Sink opWrapSink(int flags, Sink sink) { |
| return op.opWrapSink(flags, isParallel(), sink); |
| } |
| |
| @Override |
| public <P_IN> Spliterator<Integer> opEvaluateParallelLazy(PipelineHelper<Integer> helper, |
| Spliterator<P_IN> spliterator) { |
| return op.opEvaluateParallelLazy(helper, spliterator); |
| } |
| |
| @Override |
| public <P_IN> Node<Integer> opEvaluateParallel(PipelineHelper<Integer> helper, |
| Spliterator<P_IN> spliterator, |
| IntFunction<Integer[]> generator) { |
| return (Node<Integer>) op.opEvaluateParallel(helper, spliterator, generator); |
| } |
| }; |
| case LONG_VALUE: |
| return new LongPipeline.StatefulOp<Object>(upstream, op.inputShape(), op.opGetFlags()) { |
| @Override |
| public Sink opWrapSink(int flags, Sink sink) { |
| return op.opWrapSink(flags, isParallel(), sink); |
| } |
| |
| public @Override |
| <P_IN> Spliterator<Long> opEvaluateParallelLazy(PipelineHelper<Long> helper, |
| Spliterator<P_IN> spliterator) { |
| return op.opEvaluateParallelLazy(helper, spliterator); |
| } |
| |
| public @Override |
| <P_IN> Node<Long> opEvaluateParallel(PipelineHelper<Long> helper, |
| Spliterator<P_IN> spliterator, |
| IntFunction<Long[]> generator) { |
| return (Node<Long>) op.opEvaluateParallel(helper, spliterator, generator); |
| } |
| }; |
| case DOUBLE_VALUE: |
| return new DoublePipeline.StatefulOp<Object>(upstream, op.inputShape(), op.opGetFlags()) { |
| @Override |
| public Sink opWrapSink(int flags, Sink sink) { |
| return op.opWrapSink(flags, isParallel(), sink); |
| } |
| |
| @Override |
| public <P_IN> Spliterator<Double> opEvaluateParallelLazy(PipelineHelper<Double> helper, |
| Spliterator<P_IN> spliterator) { |
| return op.opEvaluateParallelLazy(helper, spliterator); |
| } |
| |
| @Override |
| public <P_IN> Node<Double> opEvaluateParallel(PipelineHelper<Double> helper, |
| Spliterator<P_IN> spliterator, |
| IntFunction<Double[]> generator) { |
| return (Node<Double>) op.opEvaluateParallel(helper, spliterator, generator); |
| } |
| }; |
| default: throw new IllegalStateException(op.outputShape().toString()); |
| } |
| } |
| |
| default StreamShape inputShape() { return StreamShape.REFERENCE; } |
| |
| default StreamShape outputShape() { return StreamShape.REFERENCE; } |
| |
| default int opGetFlags() { return 0; } |
| |
| Sink<E> opWrapSink(int flags, boolean parallel, Sink<E> sink); |
| |
| @SuppressWarnings("unchecked") |
| default <P_IN> Spliterator<E> opEvaluateParallelLazy(PipelineHelper<E> helper, |
| Spliterator<P_IN> spliterator) { |
| return opEvaluateParallel(helper, spliterator, i -> (E[]) new Object[i]).spliterator(); |
| } |
| |
| <P_IN> Node<E> opEvaluateParallel(PipelineHelper<E> helper, |
| Spliterator<P_IN> spliterator, |
| IntFunction<E[]> generator); |
| } |