// 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.skyframe;
import com.google.devtools.build.skyframe.SkyFunction;
import com.google.devtools.build.skyframe.SkyFunctionException;
import com.google.devtools.build.skyframe.SkyKey;
import com.google.devtools.build.skyframe.SkyValue;
/**
* Builder for {@link PrecomputedValue}s.
*
* <p>Always throws an error, because the values aren't computed inside the skyframe framework.
*/
public class PrecomputedFunction implements SkyFunction {
@Override
public SkyValue compute(SkyKey skyKey, Environment env) throws SkyFunctionException,
InterruptedException {
throw new IllegalStateException(skyKey + " not set");
}
@Override
public String extractTag(SkyKey skyKey) {
return null;
}
}