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// Copyright 2014 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.analysis;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
import com.google.devtools.build.lib.collect.nestedset.Order;
import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
/**
* A {@link TransitiveInfoProvider} that creates extra actions.
*/
@Immutable
public final class ExtraActionArtifactsProvider implements TransitiveInfoProvider {
public static final ExtraActionArtifactsProvider EMPTY =
new ExtraActionArtifactsProvider(
NestedSetBuilder.<Artifact>emptySet(Order.STABLE_ORDER),
NestedSetBuilder.<ExtraArtifactSet>emptySet(Order.STABLE_ORDER));
/**
* The set of extra artifacts provided by a single configured target.
*/
@Immutable
public static final class ExtraArtifactSet {
private final Label label;
private final ImmutableList<Artifact> artifacts;
private ExtraArtifactSet(Label label, Iterable<Artifact> artifacts) {
this.label = label;
this.artifacts = ImmutableList.copyOf(artifacts);
}
public Label getLabel() {
return label;
}
public ImmutableList<Artifact> getArtifacts() {
return artifacts;
}
public static ExtraArtifactSet of(Label label, Iterable<Artifact> artifacts) {
return new ExtraArtifactSet(label, artifacts);
}
@Override
public int hashCode() {
return label.hashCode();
}
@Override
public boolean equals(Object other) {
return other == this
|| (other instanceof ExtraArtifactSet
&& label.equals(((ExtraArtifactSet) other).getLabel()));
}
}
public static ExtraActionArtifactsProvider create(NestedSet<Artifact> extraActionArtifacts,
NestedSet<ExtraArtifactSet> transitiveExtraActionArtifacts) {
if (extraActionArtifacts.isEmpty() && transitiveExtraActionArtifacts.isEmpty()) {
return EMPTY;
}
return new ExtraActionArtifactsProvider(extraActionArtifacts, transitiveExtraActionArtifacts);
}
public static ExtraActionArtifactsProvider merge(
Iterable<ExtraActionArtifactsProvider> providers) {
NestedSetBuilder<Artifact> artifacts = NestedSetBuilder.stableOrder();
NestedSetBuilder<ExtraArtifactSet> transitiveExtraActionArtifacts =
NestedSetBuilder.stableOrder();
for (ExtraActionArtifactsProvider provider : providers) {
artifacts.addTransitive(provider.getExtraActionArtifacts());
transitiveExtraActionArtifacts.addTransitive(provider.getTransitiveExtraActionArtifacts());
}
return ExtraActionArtifactsProvider.create(
artifacts.build(), transitiveExtraActionArtifacts.build());
}
/** The outputs of the extra actions associated with this target. */
private final NestedSet<Artifact> extraActionArtifacts;
private final NestedSet<ExtraArtifactSet> transitiveExtraActionArtifacts;
/**
* Use {@link #create} instead.
*/
private ExtraActionArtifactsProvider(NestedSet<Artifact> extraActionArtifacts,
NestedSet<ExtraArtifactSet> transitiveExtraActionArtifacts) {
this.extraActionArtifacts = extraActionArtifacts;
this.transitiveExtraActionArtifacts = transitiveExtraActionArtifacts;
}
/**
* The outputs of the extra actions associated with this target.
*/
public NestedSet<Artifact> getExtraActionArtifacts() {
return extraActionArtifacts;
}
/**
* The outputs of the extra actions in the whole transitive closure.
*/
public NestedSet<ExtraArtifactSet> getTransitiveExtraActionArtifacts() {
return transitiveExtraActionArtifacts;
}
}
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