com.facebook.buck.util.Optionals.java Source code

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Here is the source code for com.facebook.buck.util.Optionals.java

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/*
 * Copyright 2012-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.base.Optional;
import com.google.common.collect.ImmutableCollection;
import com.google.common.collect.ImmutableMap;

public class Optionals {

    /** Utility class: do not instantiate. */
    private Optionals() {
    }

    public static <T> void addIfPresent(Optional<T> optional, ImmutableCollection.Builder<T> collection) {
        if (optional.isPresent()) {
            collection.add(optional.get());
        }
    }

    public static <K, T> void putIfPresent(Optional<T> optional, K key, ImmutableMap.Builder<K, T> collection) {
        if (optional.isPresent()) {
            collection.put(key, optional.get());
        }
    }
}