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// Copyright 2014 Google Inc. 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.skyframe;
import com.google.common.base.Objects;
import com.google.devtools.build.lib.actions.Action;
import com.google.devtools.build.lib.analysis.Aspect;
import com.google.devtools.build.lib.analysis.ConfiguredAspectFactory;
import com.google.devtools.build.lib.analysis.config.BuildConfiguration;
import com.google.devtools.build.lib.syntax.Label;
import com.google.devtools.build.skyframe.SkyFunctionName;
import com.google.devtools.build.skyframe.SkyKey;
/**
* An aspect in the context of the Skyframe graph.
*/
public final class AspectValue extends ActionLookupValue {
/**
* The key of an action that is generated by an aspect.
*/
public static final class AspectKey extends ActionLookupKey {
private final Label label;
private final BuildConfiguration configuration;
// TODO(bazel-team): class objects are not really hashable or comparable for equality other than
// by reference. We should identify the aspect here in a way that does not rely on comparison
// by reference so that keys can be serialized and deserialized properly.
private final Class<? extends ConfiguredAspectFactory> aspectFactory;
private AspectKey(Label label, BuildConfiguration configuration,
Class<? extends ConfiguredAspectFactory> aspectFactory) {
this.label = label;
this.configuration = configuration;
this.aspectFactory = aspectFactory;
}
@Override
public Label getLabel() {
return label;
}
public BuildConfiguration getConfiguration() {
return configuration;
}
public Class<? extends ConfiguredAspectFactory> getAspect() {
return aspectFactory;
}
@Override
SkyFunctionName getType() {
return SkyFunctions.ASPECT;
}
@Override
public int hashCode() {
return Objects.hashCode(label, configuration, aspectFactory);
}
@Override
public boolean equals(Object other) {
if (this == other) {
return true;
}
if (!(other instanceof AspectKey)) {
return false;
}
AspectKey that = (AspectKey) other;
return Objects.equal(label, that.label)
&& Objects.equal(configuration, that.configuration)
&& Objects.equal(aspectFactory, that.aspectFactory);
}
@Override
public String toString() {
return label + "#" + aspectFactory.getSimpleName() + " "
+ (configuration == null ? "null" : configuration.shortCacheKey());
}
}
private final Aspect aspect;
public AspectValue(Aspect aspect, Iterable<Action> actions) {
super(actions);
this.aspect = aspect;
}
public Aspect get() {
return aspect;
}
public static SkyKey key(Label label, BuildConfiguration configuration,
Class<? extends ConfiguredAspectFactory> aspectFactory) {
return new SkyKey(SkyFunctions.ASPECT, new AspectKey(label, configuration, aspectFactory));
}
}
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