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Gradle 6.9.1 API redistribution.

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/*
 * Copyright 2011 the original author or authors.
 *
 * 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 org.gradle.util;

import org.gradle.api.Action;
import java.util.concurrent.Callable;

/**
 * Generic utility for temporarily changing something.
 */
public class Swapper {

    private final Callable getter;
    private final Action setter;

    public Swapper(Callable getter, Action setter) {
        this.getter = getter;
        this.setter = setter;
    }

    public  N swap(Y value, Callable whileSwapped) throws Exception {
        T orginalValue = getter.call();
        setter.execute(value);
        try {
            return whileSwapped.call();
        } finally {
            setter.execute(orginalValue);
        }
    }
}