#686

Committed 19 Jul 2026 09:26AM UTC coverage: 99.777% (-0.02%) from 99.794%

Build # #686

Build Type

push

Committed by

Commit Message

[#286] EntryStream.withoutKeys and withoutValues don't tolerate streams containing null keys and values respectively

Coverage Stats

4 of 4 new or added lines in 1 file covered. (100.0%)

4 existing lines in 3 files now uncovered.

5814 of 5827 relevant lines covered (99.78%)

1.0 hits per line

Source File
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98.67

/src/main/java/one/util/streamex/UnorderedCancellableSpliterator.java

/*
 * Copyright 2015, 2024 StreamEx contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package one.util.streamex;

import java.util.Spliterator;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.*;

import static one.util.streamex.Internals.CancelException;
import static one.util.streamex.Internals.CloneableSpliterator;

/**
 * @author Tagir Valeev
 */
/* package */class UnorderedCancellableSpliterator<T, A> extends CloneableSpliterator<A, UnorderedCancellableSpliterator<T, A>> {
    private volatile Spliterator<T> source;
    private final BiConsumer<A, ? super T> accumulator;
    private final Predicate<A> cancelPredicate;
    private final Supplier<A> supplier;
    private final ConcurrentLinkedQueue<A> partialResults = new ConcurrentLinkedQueue<>();
    private final AtomicBoolean cancelled = new AtomicBoolean(false);
    private final AtomicInteger nPeers = new AtomicInteger(1);
    private final BinaryOperator<A> combiner;
    private boolean flag;

    UnorderedCancellableSpliterator(Spliterator<T> source, Supplier<A> supplier, BiConsumer<A, ? super T> accumulator,
            BinaryOperator<A> combiner, Predicate<A> cancelPredicate) {
        this.source = source;
        this.supplier = supplier;
        this.accumulator = accumulator;
        this.combiner = combiner;
        this.cancelPredicate = cancelPredicate;
    }

    private boolean checkCancel(A acc) {
        if (cancelPredicate.test(acc)) {
            if (cancelled.compareAndSet(false, true)) {
                flag = true;
                return true;
            }
        }
        if (cancelled.get()) {
            flag = false;
            return true;
        }
        return false;
    }

    private boolean handleCancel(Consumer<? super A> action, A acc) {
        source = null;
        if (flag) {
            action.accept(acc);
            return true;
        }
        return false;
    }

    @Override
    public boolean tryAdvance(Consumer<? super A> action) {
        Spliterator<T> source = this.source;
        if (source == null || cancelled.get()) {
            this.source = null;
            return false;
        }
        A acc = supplier.get();
        if (checkCancel(acc))
            return handleCancel(action, acc);
        try {
            source.forEachRemaining(t -> {
                accumulator.accept(acc, t);
                if (checkCancel(acc))
                    throw new CancelException();
            });
        } catch (CancelException ex) {
            return handleCancel(action, acc);
        }
        A result = acc;
        while (true) {
            A acc2 = partialResults.poll();
            if (acc2 == null)
                break;
            result = combiner.apply(result, acc2);
            if (checkCancel(result))
                return handleCancel(action, result);
        }
        partialResults.offer(result);
        this.source = null;
        if (nPeers.decrementAndGet() == 0) {
            result = partialResults.poll();
            // non-cancelled finish
            while (true) {
                A acc2 = partialResults.poll();
                if (acc2 == null)
                    break;
                result = combiner.apply(result, acc2);
                if (cancelPredicate.test(result))
                    break;
            }
            this.source = null;
            action.accept(result);
            return true;
        }
        return false;
    }

    @Override
    public void forEachRemaining(Consumer<? super A> action) {
        tryAdvance(action);
    }

    @Override
    public Spliterator<A> trySplit() {
        if (source == null || cancelled.get()) {
            source = null;
            return null;
        }
        Spliterator<T> prefix = source.trySplit();
        if (prefix == null) {
            return null;
        }
        UnorderedCancellableSpliterator<T, A> result = doClone();
        result.source = prefix;
        nPeers.incrementAndGet();
        return result;
    }

    @Override
    public long estimateSize() {
        return source == null ? 0 : source.estimateSize();
    }

    @Override
    public int characteristics() {
        return source == null ? SIZED : 0;
    }
}

1	/*
2	* Copyright 2015, 2024 StreamEx contributors
3	*
4	* Licensed under the Apache License, Version 2.0 (the "License");
5	* you may not use this file except in compliance with the License.
6	* You may obtain a copy of the License at
7	*
8	* http://www.apache.org/licenses/LICENSE-2.0
9	*
10	* Unless required by applicable law or agreed to in writing, software
11	* distributed under the License is distributed on an "AS IS" BASIS,
12	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	* See the License for the specific language governing permissions and
14	* limitations under the License.
15	*/
16	package one.util.streamex;
17
18	import java.util.Spliterator;
19	import java.util.concurrent.ConcurrentLinkedQueue;
20	import java.util.concurrent.atomic.AtomicBoolean;
21	import java.util.concurrent.atomic.AtomicInteger;
22	import java.util.function.*;
23
24	import static one.util.streamex.Internals.CancelException;
25	import static one.util.streamex.Internals.CloneableSpliterator;
26
27	/**
28	* @author Tagir Valeev
29	*/
30	/* package */class UnorderedCancellableSpliterator<T, A> extends CloneableSpliterator<A, UnorderedCancellableSpliterator<T, A>> {
31	private volatile Spliterator<T> source;
32	private final BiConsumer<A, ? super T> accumulator;
33	private final Predicate<A> cancelPredicate;
34	private final Supplier<A> supplier;
35	private final ConcurrentLinkedQueue<A> partialResults = new ConcurrentLinkedQueue<>();	1✔
36	private final AtomicBoolean cancelled = new AtomicBoolean(false);	1✔
37	private final AtomicInteger nPeers = new AtomicInteger(1);	1✔
38	private final BinaryOperator<A> combiner;
39	private boolean flag;
40
41	UnorderedCancellableSpliterator(Spliterator<T> source, Supplier<A> supplier, BiConsumer<A, ? super T> accumulator,
42	BinaryOperator<A> combiner, Predicate<A> cancelPredicate) {	1✔
43	this.source = source;	1✔
44	this.supplier = supplier;	1✔
45	this.accumulator = accumulator;	1✔
46	this.combiner = combiner;	1✔
47	this.cancelPredicate = cancelPredicate;	1✔
48	}	1✔
49
50	private boolean checkCancel(A acc) {
51	if (cancelPredicate.test(acc)) {	1✔
52	if (cancelled.compareAndSet(false, true)) {	1✔
53	flag = true;	1✔
54	return true;	1✔
55	}
56	}
57	if (cancelled.get()) {	1✔
58	flag = false;	1✔
59	return true;	1✔
60	}
61	return false;	1✔
62	}
63
64	private boolean handleCancel(Consumer<? super A> action, A acc) {
65	source = null;	1✔
66	if (flag) {	1✔
67	action.accept(acc);	1✔
68	return true;	1✔
69	}
70	return false;	1✔
71	}
72
73	@Override
74	public boolean tryAdvance(Consumer<? super A> action) {
75	Spliterator<T> source = this.source;	1✔
76	if (source == null \|\| cancelled.get()) {	1✔
77	this.source = null;	1✔
78	return false;	1✔
79	}
80	A acc = supplier.get();	1✔
81	if (checkCancel(acc))	1✔
82	return handleCancel(action, acc);	1✔
83	try {
84	source.forEachRemaining(t -> {	1✔
85	accumulator.accept(acc, t);	1✔
86	if (checkCancel(acc))	1✔
87	throw new CancelException();	1✔
88	});	1✔
89	} catch (CancelException ex) {	1✔
90	return handleCancel(action, acc);	1✔
91	}	1✔
92	A result = acc;	1✔
93	while (true) {
94	A acc2 = partialResults.poll();	1✔
95	if (acc2 == null)	1✔
96	break;	1✔
97	result = combiner.apply(result, acc2);	1✔
98	if (checkCancel(result))	1✔
99	return handleCancel(action, result);	1✔
100	}	1✔
101	partialResults.offer(result);	1✔
102	this.source = null;	1✔
103	if (nPeers.decrementAndGet() == 0) {	1✔
104	result = partialResults.poll();	1✔
105	// non-cancelled finish
106	while (true) {
107	A acc2 = partialResults.poll();	1✔
108	if (acc2 == null)	1✔
109	break;	1✔
110	result = combiner.apply(result, acc2);	1✔
111	if (cancelPredicate.test(result))	1✔
UNCOV 112	break;	×
113	}	1✔
114	this.source = null;	1✔
115	action.accept(result);	1✔
116	return true;	1✔
117	}
118	return false;	1✔
119	}
120
121	@Override
122	public void forEachRemaining(Consumer<? super A> action) {
123	tryAdvance(action);	1✔
124	}	1✔
125
126	@Override
127	public Spliterator<A> trySplit() {
128	if (source == null \|\| cancelled.get()) {	1✔
129	source = null;	1✔
130	return null;	1✔
131	}
132	Spliterator<T> prefix = source.trySplit();	1✔
133	if (prefix == null) {	1✔
134	return null;	1✔
135	}
136	UnorderedCancellableSpliterator<T, A> result = doClone();	1✔
137	result.source = prefix;	1✔
138	nPeers.incrementAndGet();	1✔
139	return result;	1✔
140	}
141
142	@Override
143	public long estimateSize() {
144	return source == null ? 0 : source.estimateSize();	1✔
145	}
146
147	@Override
148	public int characteristics() {
149	return source == null ? SIZED : 0;	1✔
150	}
151	}

amaembo / streamex / #686

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