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This OSGi bundle wraps ${pkgArtifactId} ${pkgVersion} jar file.
/*
* Copyright 2015 Google Inc.
*
* 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 java.util;
import java.util.function.LongConsumer;
import java.util.function.LongSupplier;
import java.util.function.Supplier;
import static javaemul.internal.InternalPreconditions.checkCriticalElement;
/**
* See
* the official Java API doc for details.
*/
public final class OptionalLong {
public static OptionalLong empty() {
return EMPTY;
}
public static OptionalLong of(long value) {
return new OptionalLong(value);
}
private static final OptionalLong EMPTY = new OptionalLong();
private final long ref;
private final boolean present;
private OptionalLong() {
ref = 0;
present = false;
}
private OptionalLong(long value) {
ref = value;
present = true;
}
public boolean isPresent() {
return present;
}
public long getAsLong() {
checkCriticalElement(present);
return ref;
}
public void ifPresent(LongConsumer consumer) {
if (present) {
consumer.accept(ref);
}
}
public long orElse(long other) {
return present ? ref : other;
}
public long orElseGet(LongSupplier other) {
return present ? ref : other.getAsLong();
}
public long orElseThrow(Supplier exceptionSupplier) throws X {
if (present) {
return ref;
}
throw exceptionSupplier.get();
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof OptionalLong)) {
return false;
}
OptionalLong other = (OptionalLong) obj;
return present == other.present && Long.compare(ref, other.ref) == 0;
}
@Override
public int hashCode() {
return present ? Long.hashCode(ref) : 0;
}
@Override
public String toString() {
return present ? "OptionalLong.of(" + Long.toString(ref) + ")" : "OptionalLong.empty()";
}
}