| /* |
| * Copyright 2014-present Facebook, Inc. |
| * |
| * 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.facebook.buck.cxx; |
| |
| import com.facebook.buck.rules.AbstractBuildRule; |
| import com.facebook.buck.rules.BuildContext; |
| import com.facebook.buck.rules.BuildRuleParams; |
| import com.facebook.buck.rules.BuildableContext; |
| import com.facebook.buck.rules.RuleKey; |
| import com.facebook.buck.rules.SourcePathResolver; |
| import com.facebook.buck.step.Step; |
| import com.google.common.collect.ImmutableCollection; |
| import com.google.common.collect.ImmutableList; |
| |
| import java.nio.file.Path; |
| |
| import javax.annotation.Nullable; |
| |
| /** |
| * A {@link com.facebook.buck.rules.BuildRule} which performs no actions. This is useful for |
| * certain situations where we want presence in the action graph that doesn't actually do anything |
| * (e.g. {@link com.facebook.buck.rules.TestRule}. |
| */ |
| public class NoopBuildRule extends AbstractBuildRule { |
| |
| public NoopBuildRule(BuildRuleParams params, SourcePathResolver resolver) { |
| super(params, resolver); |
| } |
| |
| @Override |
| protected ImmutableCollection<Path> getInputsToCompareToOutput() { |
| return ImmutableList.of(); |
| } |
| |
| @Override |
| protected RuleKey.Builder appendDetailsToRuleKey(RuleKey.Builder builder) { |
| return builder; |
| } |
| |
| @Override |
| public final ImmutableList<Step> getBuildSteps( |
| BuildContext context, |
| BuildableContext buildableContext) { |
| return ImmutableList.of(); |
| } |
| |
| @Nullable |
| @Override |
| public Path getPathToOutputFile() { |
| return null; |
| } |
| |
| } |