com.facebook.buck.testutil.RuleMap.java Source code

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Here is the source code for com.facebook.buck.testutil.RuleMap.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.testutil;

import com.facebook.buck.graph.MutableDirectedGraph;
import com.facebook.buck.rules.BuildRule;
import com.facebook.buck.rules.BuildRuleResolver;
import com.facebook.buck.rules.DependencyGraph;
import com.google.common.collect.ImmutableList;

public class RuleMap {

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

    public static DependencyGraph createGraphFromBuildRules(BuildRuleResolver params) {
        Iterable<BuildRule> rules = params.getBuildRules();
        return createGraphFromBuildRules(rules);
    }

    public static DependencyGraph createGraphFromSingleRule(BuildRule buildRule) {
        return createGraphFromBuildRules(ImmutableList.of(buildRule));
    }

    private static DependencyGraph createGraphFromBuildRules(Iterable<BuildRule> rules) {
        MutableDirectedGraph<BuildRule> graph = new MutableDirectedGraph<BuildRule>();
        for (BuildRule rule : rules) {
            graph.addNode(rule);
            for (BuildRule dep : rule.getDeps()) {
                graph.addEdge(rule, dep);
            }
        }
        return new DependencyGraph(graph);
    }

}