Move Maybe into maybe package

This commit is contained in:
Paul Campbell 2018-06-21 18:59:31 +01:00
parent 95d5837e31
commit bf8e383229
5 changed files with 41 additions and 9 deletions

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@ -19,7 +19,7 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/ */
package net.kemitix.mon; package net.kemitix.mon.maybe;
import lombok.AccessLevel; import lombok.AccessLevel;
import lombok.RequiredArgsConstructor; import lombok.RequiredArgsConstructor;
@ -39,7 +39,7 @@ import java.util.function.Supplier;
* @author Paul Campbell (pcampbell@kemitix.net) * @author Paul Campbell (pcampbell@kemitix.net)
*/ */
@RequiredArgsConstructor(access = AccessLevel.PROTECTED) @RequiredArgsConstructor(access = AccessLevel.PROTECTED)
public final class Just<T> implements Maybe<T> { final class Just<T> implements Maybe<T> {
private final T value; private final T value;

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@ -19,9 +19,10 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/ */
package net.kemitix.mon; package net.kemitix.mon.maybe;
import lombok.NonNull; import lombok.NonNull;
import net.kemitix.mon.Functor;
import java.util.Optional; import java.util.Optional;
import java.util.function.Consumer; import java.util.function.Consumer;

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@ -19,7 +19,7 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/ */
package net.kemitix.mon; package net.kemitix.mon.maybe;
import java.util.Optional; import java.util.Optional;
import java.util.function.Consumer; import java.util.function.Consumer;
@ -34,9 +34,9 @@ import java.util.function.Supplier;
* *
* @author Paul Campbell (pcampbell@kemitix.net) * @author Paul Campbell (pcampbell@kemitix.net)
*/ */
public final class Nothing<T> implements Maybe<T> { final class Nothing<T> implements Maybe<T> {
protected static final Maybe<?> INSTANCE = new Nothing<>(); static final Maybe<?> INSTANCE = new Nothing<>();
@Override @Override
public <R> Maybe<?> map(final Function<T, R> f) { public <R> Maybe<?> map(final Function<T, R> f) {

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@ -0,0 +1,30 @@
/**
* The MIT License (MIT)
*
* Copyright (c) 2017 Paul Campbell
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
* and associated documentation files (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies
* or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
* AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* An experiment in creating something similar to a Type-Alias in Java.
*
* <p>Ideas initially lifted from the Design with Types series at https://fsharpforfunandprofit.com/</p>
*
* @author Paul Campbell (pcampbell@kemitix.net)
*/
package net.kemitix.mon.maybe;

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@ -1,5 +1,6 @@
package net.kemitix.mon; package net.kemitix.mon;
import net.kemitix.mon.maybe.Maybe;
import org.junit.Test; import org.junit.Test;
import java.util.Objects; import java.util.Objects;
@ -7,9 +8,9 @@ import java.util.Optional;
import java.util.concurrent.atomic.AtomicInteger; import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.Predicate; import java.util.function.Predicate;
import static net.kemitix.mon.Maybe.just; import static net.kemitix.mon.maybe.Maybe.just;
import static net.kemitix.mon.Maybe.maybe; import static net.kemitix.mon.maybe.Maybe.maybe;
import static net.kemitix.mon.Maybe.nothing; import static net.kemitix.mon.maybe.Maybe.nothing;
import static org.assertj.core.api.Assertions.assertThat; import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatCode; import static org.assertj.core.api.Assertions.assertThatCode;
import static org.assertj.core.api.Assertions.assertThatNullPointerException; import static org.assertj.core.api.Assertions.assertThatNullPointerException;