com.google.devtools.build.lib.query2.output.ConservativeAspectResolver.java Source code

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Here is the source code for com.google.devtools.build.lib.query2.output.ConservativeAspectResolver.java

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// Copyright 2015 The Bazel Authors. All rights reserved.
//
// 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.google.devtools.build.lib.query2.output;

import com.google.common.collect.ImmutableMultimap;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.LinkedHashMultimap;
import com.google.common.collect.Multimap;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.packages.Aspect;
import com.google.devtools.build.lib.packages.AspectDefinition;
import com.google.devtools.build.lib.packages.Attribute;
import com.google.devtools.build.lib.packages.DependencyFilter;
import com.google.devtools.build.lib.packages.Rule;
import com.google.devtools.build.lib.packages.Target;

import java.util.Set;

/**
 * An aspect resolver that overestimates the required aspect dependencies.
 *
 * <p>Does not need to load any packages other than the one containing the target being processed.
 */
public class ConservativeAspectResolver implements AspectResolver {
    @Override
    public ImmutableMultimap<Attribute, Label> computeAspectDependencies(Target target,
            DependencyFilter dependencyFilter) throws InterruptedException {
        if (!(target instanceof Rule)) {
            return ImmutableMultimap.of();
        }
        Rule rule = (Rule) target;

        Multimap<Attribute, Label> result = LinkedHashMultimap.create();
        for (Attribute attribute : rule.getAttributes()) {
            for (Aspect aspect : attribute.getAspects(rule)) {
                AspectDefinition.addAllAttributesOfAspect(rule, result, aspect, dependencyFilter);
            }
        }

        return ImmutableMultimap.copyOf(result);
    }

    @Override
    public Set<Label> computeBuildFileDependencies(com.google.devtools.build.lib.packages.Package pkg,
            BuildFileDependencyMode mode) throws InterruptedException {
        // We do a conservative estimate precisely so that we don't depend on any other BUILD files.
        return ImmutableSet.copyOf(mode.getDependencies(pkg));
    }
}