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package jedi.functors;

import jedi.functional.Functor;

/**
 * A {@link Functor} that returns a constant regardless of its argument.
 */
public class ConstantFunctor implements Functor {

    private final R r;

    /**
     * A convenient factory to create a constant functor.
     * @param c
     * @return a functor that will always return c
     */
    public static  ConstantFunctor constant(R c) {
        return new ConstantFunctor(c);
    }

    public ConstantFunctor(R r) {
        this.r = r;
    }

    public R execute(Object value) {
        return r;
    }

}