com.facebook.buck.rules.DependencyAggregationTestUtil.java Source code

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Here is the source code for com.facebook.buck.rules.DependencyAggregationTestUtil.java

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/*
 * 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.rules;

import com.google.common.base.Function;
import com.google.common.base.Predicates;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.Iterables;

public final class DependencyAggregationTestUtil {
    private DependencyAggregationTestUtil() {
    }

    /**
     * Return dependencies of a rule, traversing through any dependency aggregations.
     */
    public static Iterable<BuildRule> getDisaggregatedDeps(BuildRule rule) {
        return FluentIterable.from(rule.getDeps()).filter(DependencyAggregation.class)
                .transformAndConcat(new Function<DependencyAggregation, Iterable<BuildRule>>() {
                    @Override
                    public Iterable<BuildRule> apply(DependencyAggregation input) {
                        return input.getDeps();
                    }
                }).append(Iterables.filter(rule.getDeps(),
                        Predicates.not(Predicates.instanceOf(DependencyAggregation.class))));
    }
}