-/*
- * (C) Copyright 2016 Pantheon Technologies, s.r.o. and others.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.opendaylight.yangtools.triemap;
-
-/**
- * Mimic Option in Scala
- *
- * @author Roman Levenstein <romixlev@gmail.com>
- *
- * @param <V>
- */
-abstract class Option<V> {
- private static final None<?> NONE = new None<>();
-
- static <V> Option<V> makeOption(final V o) {
- if (o != null) {
- return new Some<>(o);
- }
-
- return makeOption();
- }
-
- @SuppressWarnings("unchecked")
- static <V> Option<V> makeOption() {
- return (Option<V>) NONE;
- }
-
- abstract boolean nonEmpty();
-}