com.unit16.z.function.FluentConsumer Maven / Gradle / Ivy
package com.unit16.z.function;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Predicate;
public class FluentConsumer implements Consumer {
private final Consumer wrapped;
private FluentConsumer(Consumer w) { wrapped = w; }
public static FluentConsumer
on(Consumer w) { return new FluentConsumer
(w); }
@Override
public final void accept(T t) {
wrapped.accept(t);
}
public final FluentConsumer filter(final Predicate pred) {
return new Filters<>(pred, wrapped);
}
public final FluentConsumer map(final Function func)
{
return new MapsTo<>(func, wrapped);
}
private static final class Filters extends FluentConsumer
{
private Filters(Predicate pred, Consumer ct)
{
super(new Consumer(){
@Override
public void accept(S t) {
if (pred.test(t)) ct.accept(t);
}});
}
}
private static final class MapsTo extends FluentConsumer
{
private MapsTo(Function map, Consumer ct)
{
super(new Consumer(){
@Override
public void accept(S t) {
ct.accept(map.apply(t));
}});
}
}
}