com.google.devtools.build.lib.skyframe.TransitiveTargetKey.java Source code

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Here is the source code for com.google.devtools.build.lib.skyframe.TransitiveTargetKey.java

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// Copyright 2017 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.skyframe;

import com.google.common.base.Preconditions;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe;
import com.google.devtools.build.skyframe.SkyFunctionName;
import com.google.devtools.build.skyframe.SkyKey;

/**
 * A key requesting transitive loading of all dependencies of a given label; see
 * {@link TransitiveTargetFunction} and {@link TransitiveTargetValue}.
 */
@Immutable
@ThreadSafe
public final class TransitiveTargetKey implements SkyKey {
    public static SkyKey of(Label label) {
        Preconditions.checkArgument(!label.getPackageIdentifier().getRepository().isDefault());
        return new TransitiveTargetKey(label);
    }

    private final Label label;

    private TransitiveTargetKey(Label label) {
        this.label = Preconditions.checkNotNull(label);
    }

    @Override
    public SkyFunctionName functionName() {
        return SkyFunctions.TRANSITIVE_TARGET;
    }

    @Override
    public Object argument() {
        return this;
    }

    public Label getLabel() {
        return label;
    }

    @Override
    public int hashCode() {
        return 31 * functionName().hashCode() + label.hashCode();
    }

    @Override
    public boolean equals(Object o) {
        if (o == this) {
            return true;
        }
        if (!(o instanceof TransitiveTargetKey)) {
            return false;
        }
        return ((TransitiveTargetKey) o).label.equals(label);
    }
}