fj.function.Try0 Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of functionaljava Show documentation

Functional Java is an open source library that supports closures for the Java programming language

The newest version!

package fj.function;

import fj.F0;
import fj.P;
import fj.P1;
import fj.data.Option;
import fj.data.Validation;

import static fj.data.Validation.fail;
import static fj.data.Validation.success;

/**
 * A product of A which may throw an Exception.
 *
 * Used to instantiate a lambda that may throw an Exception before converting to a P1.
 *
 * @see fj.Try#f(Try0)
 */

public interface Try0 {

    A f() throws Z;

    @SuppressWarnings("unchecked")
    default F0> toF0() {
        return () -> {
            try {
                return success(f());
            } catch (Exception e) {
                return fail((Z) e);
            }
        };
    }

    default TryEffect0 toTryEffect0() {
        return () -> f();
    }

    default Effect0 toEffect0() {
        return () -> {
            try {
                f();
            } catch (Exception e) {
            }
        };
    }

    default P1> toP1() {
        return P.lazy(() -> toF0().f());
    }

}