RecursivePathIterator.java

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/*-
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 * #%L
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 * io.earcam.instrumental.io
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 * %%
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 * Copyright (C) 2018 earcam
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 * %%
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 * SPDX-License-Identifier: (BSD-3-Clause OR EPL-1.0 OR Apache-2.0 OR MIT)
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 *
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 * You <b>must</b> choose to accept, in full - any individual or combination of
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 * the following licenses:
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 * <ul>
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 * 	<li><a href="https://opensource.org/licenses/BSD-3-Clause">BSD-3-Clause</a></li>
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 * 	<li><a href="https://www.eclipse.org/legal/epl-v10.html">EPL-1.0</a></li>
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 * 	<li><a href="https://www.apache.org/licenses/LICENSE-2.0">Apache-2.0</a></li>
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 * 	<li><a href="https://opensource.org/licenses/MIT">MIT</a></li>
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 * </ul>
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 * #L%
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 */
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package io.earcam.utilitarian.io;
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import java.nio.file.DirectoryStream;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.ArrayDeque;
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import java.util.Deque;
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import java.util.Iterator;
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import java.util.function.Function;
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import io.earcam.unexceptional.Exceptional;
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class RecursivePathIterator implements Iterator<Path> {
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	private static final Function<Path, DirectoryStream<Path>> DEFAULT_STREAMER = Exceptional.uncheckFunction(Files::newDirectoryStream);
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	private final Deque<Iterator<Path>> pending = new ArrayDeque<>();
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	private final Function<Path, DirectoryStream<Path>> streamer;
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	private Iterator<Path> current;
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	RecursivePathIterator(Path root)
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	{
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		this(root, DEFAULT_STREAMER);
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	}
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	RecursivePathIterator(Path root, Function<Path, DirectoryStream<Path>> directoryStreamer)
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	{
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		this(directoryStreamer.apply(root).iterator(), directoryStreamer);
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	}
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	RecursivePathIterator(Iterator<Path> iterator, Function<Path, DirectoryStream<Path>> directoryStreamer)
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	{
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		this.current = iterator;
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		this.streamer = directoryStreamer;
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	}
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	@Override
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	public boolean hasNext()
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	{
61 2 1. hasNext : negated conditional → KILLED
2. hasNext : replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED
 
		return current.hasNext()
62 1 1. hasNext : negated conditional → KILLED
 
				|| popPending();
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	}
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	private boolean popPending()
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	{
68 1 1. popPending : negated conditional → KILLED
 
		if(pending.isEmpty()) {
69 1 1. popPending : replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED
 
			return false;
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		}
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		current = pending.pop();
72 1 1. popPending : replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED
 
		return hasNext();
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	}
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	@Override
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	public Path next()
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	{
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		Path next = current.next();
80 1 1. next : negated conditional → KILLED
 
		if(next.toFile().isDirectory()) {
81 1 1. next : removed call to java/util/Deque::push → KILLED
 
			pending.push(current);
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			current = streamer.apply(next).iterator();
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		}
84 1 1. next : mutated return of Object value for io/earcam/utilitarian/io/RecursivePathIterator::next to ( if (x != null) null else throw new RuntimeException ) → KILLED
 
		return next;
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	}
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}

Mutations

61

1.1
Location : hasNext
Killed by : io.earcam.utilitarian.io.RecursivePathIteratorTest.deeper() negated conditional → KILLED

2.2
Location : hasNext
Killed by : io.earcam.utilitarian.io.RecursivePathIteratorTest.deeper() replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED
62

1.1
Location : hasNext
Killed by : io.earcam.utilitarian.io.RecursivePathIteratorTest.deeper() negated conditional → KILLED
68

1.1
Location : popPending
Killed by : io.earcam.utilitarian.io.RecursivePathIteratorTest.deeper() negated conditional → KILLED
69

1.1
Location : popPending
Killed by : io.earcam.utilitarian.io.RecursivePathIteratorTest.deeper() replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED
72

1.1
Location : popPending
Killed by : io.earcam.utilitarian.io.ExplodedJarInputStreamTest.disgustingTest() replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED
80

1.1
Location : next
Killed by : io.earcam.utilitarian.io.RecursivePathIteratorTest.deeper() negated conditional → KILLED
81

1.1
Location : next
Killed by : io.earcam.utilitarian.io.RecursivePathIteratorTest.deeper() removed call to java/util/Deque::push → KILLED
84

1.1
Location : next
Killed by : io.earcam.utilitarian.io.RecursivePathIteratorTest.deeper() mutated return of Object value for io/earcam/utilitarian/io/RecursivePathIterator::next to ( if (x != null) null else throw new RuntimeException ) → KILLED

Active mutators

Tests examined


Report generated by PIT 1.4.3