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/*
* Copyright (c) 2025, 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.
*/
import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.BiFunction;
import java.util.function.Function;
import java.util.function.IntFunction;
import java.util.function.Supplier;
final class StableTestUtil {
private StableTestUtil() {}
public static final class CountingSupplier<T>
extends AbstractCounting<Supplier<T>>
implements Supplier<T> {
public CountingSupplier(Supplier<T> delegate) {
super(delegate);
}
@Override
public T get() {
incrementCounter();
return delegate.get();
}
}
public static final class CountingIntFunction<R>
extends AbstractCounting<IntFunction<R>>
implements IntFunction<R> {
public CountingIntFunction(IntFunction<R> delegate) {
super(delegate);
}
@Override
public R apply(int value) {
incrementCounter();
return delegate.apply(value);
}
}
public static final class CountingFunction<T, R>
extends AbstractCounting<Function<T, R>>
implements Function<T, R> {
public CountingFunction(Function<T, R> delegate) {
super(delegate);
}
@Override
public R apply(T t) {
incrementCounter();
return delegate.apply(t);
}
}
public static final class CountingBiFunction<T, U, R>
extends AbstractCounting<BiFunction<T, U, R>>
implements BiFunction<T, U, R> {
public CountingBiFunction(BiFunction<T, U, R> delegate) {
super(delegate);
}
@Override
public R apply(T t, U u) {
incrementCounter();
return delegate.apply(t, u);
}
}
abstract static class AbstractCounting<D> {
private final AtomicInteger cnt = new AtomicInteger();
protected final D delegate;
protected AbstractCounting(D delegate) {
this.delegate = delegate;
}
protected final void incrementCounter() {
cnt.incrementAndGet();
}
public final int cnt() {
return cnt.get();
}
@Override
public final String toString() {
return cnt.toString();
}
}
}
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