/*
* Copyright 2016-present Facebook, 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 com.facebook.buck.util;
import com.google.common.collect.ImmutableSet;
import java.util.Optional;
/**
* Transitional helper functions for {@link java.util.Optional} that mimics functionality of {@link
* com.google.common.base.Optional}.
*
* <p>Avoid using these functions for new code.
*/
public final class OptionalCompat {
private OptionalCompat() {}
/** @see com.google.common.base.Optional#asSet() */
public static final <T> ImmutableSet<T> asSet(Optional<T> optional) {
if (optional.isPresent()) {
return ImmutableSet.of(optional.get());
} else {
return ImmutableSet.of();
}
}
}