package cz.cvut.k36.pr2.hw.hw06.impl;

import cz.cvut.k36.pr2.hw.hw06.Function;
import cz.cvut.k36.pr2.hw.hw06.Pr2List;

/**
 *
 * @author Lukas
 */
public class MapView<Input, Output> extends View<Output> {

    final Pr2List<Input> source;
    final Function<Input, Output> function;

    public MapView(Pr2List<Input> source, Function<Input, Output> function) {
        this.source = source;
        this.function = function;
    }

    @Override
    public Output head() {
        return function.apply(source.head());
    }

    @Override
    public Pr2List<Output> tail() {
        return new MapView(source.tail(), function);
    }

    @Override
    public boolean isEmpty() {
        return source.isEmpty();
    }

    @Override
    public int size() {
        return source.size();
    }

}