/**
* Copyright (C) 2006-2017 INRIA and contributors
* Spoon - http://spoon.gforge.inria.fr/
*
* This software is governed by the CeCILL-C License under French law and
* abiding by the rules of distribution of free software. You can use, modify
* and/or redistribute the software under the terms of the CeCILL-C license as
* circulated by CEA, CNRS and INRIA at http://www.cecill.info.
*
* This program 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 CeCILL-C License for more details.
*
* The fact that you are presently reading this means that you have had
* knowledge of the CeCILL-C license and that you accept its terms.
*/
package spoon.reflect.visitor.chain;
/**
* Abstraction for functions in the Spoon realm.
* It is used in the query stack, for example by {@link CtQueryable#map(CtFunction)}
* It is compatible with Java 8 lambdas, hence enable to write one-liner queries with lambdas.
*
* @param <T> the type of the input to the function
* @param <R> the type of the result of the function
*/
public interface CtFunction<T, R> {
R apply(T input);
}