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Chronicle-Test-Framework

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package net.openhft.chronicle.testframework;

import net.openhft.chronicle.testframework.internal.ProductUtil;

import java.util.Collection;
import java.util.function.BiFunction;
import java.util.stream.Stream;

import static java.util.Objects.requireNonNull;

public final class Product {

    // Suppresses default constructor, ensuring non-instantiability.
    private Product() {
    }

    public static  Stream> of(Collection ts,
                                                   Collection us) {
        requireNonNull(ts);
        requireNonNull(us);
        return of(ts, us, ProductUtil.Product2Impl::new);
    }


    public static  Stream of(Collection ts,
                                         Collection us,
                                         BiFunction constructor) {
        requireNonNull(ts);
        requireNonNull(us);
        requireNonNull(constructor);
        return ProductUtil.of(ts, us, constructor);
    }


    public static  Stream> of(Collection ts,
                                                         Collection us,
                                                         Collection vs) {
        requireNonNull(ts);
        requireNonNull(us);
        requireNonNull(vs);
        return of(ts, us, vs, ProductUtil.Product3Impl::new);
    }

    public static  Stream of(Collection ts,
                                            Collection us,
                                            Collection vs,
                                            TriFunction constructor) {
        requireNonNull(ts);
        requireNonNull(us);
        requireNonNull(vs);
        requireNonNull(constructor);
        return ProductUtil.of(ts, us, vs, constructor);

    }

    @FunctionalInterface
    public interface TriFunction {

        /**
         * Applies this function to the given arguments.
         *
         * @param t the first function argument
         * @param u the second function argument
         * @param v the third function argument
         * @return the function result
         */
        R apply(T t, U u, V v);
    }


    public interface HasFirst {
        T first();
    }

    public interface HasSecond {
        U second();
    }

    public interface HasThird {
        V third();
    }

    public interface Product2 extends HasFirst, HasSecond {
    }

    public interface Product3 extends HasFirst, HasSecond, HasThird {
    }


}