| /* |
| * 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.SourcePath; |
| import com.facebook.buck.rules.SourcePathResolver; |
| import com.facebook.buck.step.Step; |
| import com.facebook.buck.step.fs.MkdirStep; |
| import com.facebook.buck.step.fs.RmStep; |
| import com.google.common.collect.ImmutableCollection; |
| import com.google.common.collect.ImmutableList; |
| |
| import java.nio.file.Path; |
| |
| import javax.annotation.Nullable; |
| |
| public class Lex extends AbstractBuildRule { |
| |
| private final Path lex; |
| private final ImmutableList<String> flags; |
| private final Path outputSource; |
| private final Path outputHeader; |
| private final SourcePath input; |
| |
| public Lex( |
| BuildRuleParams params, |
| SourcePathResolver resolver, |
| Path lex, |
| ImmutableList<String> flags, |
| Path outputSource, |
| Path outputHeader, |
| SourcePath input) { |
| |
| super(params, resolver); |
| |
| this.lex = lex; |
| this.flags = flags; |
| this.outputSource = outputSource; |
| this.outputHeader = outputHeader; |
| this.input = input; |
| } |
| |
| @Override |
| protected ImmutableCollection<Path> getInputsToCompareToOutput() { |
| return getResolver().filterInputsToCompareToOutput(input); |
| } |
| |
| @Override |
| protected RuleKey.Builder appendDetailsToRuleKey(RuleKey.Builder builder) { |
| return builder |
| .setReflectively("lex", lex) |
| .setReflectively("flags", flags) |
| .setReflectively("outputSource", outputSource.toString()) |
| .setReflectively("outputHeader", outputHeader.toString()) |
| // The input name gets baked into line markers. |
| .setReflectively("input", input.toString()); |
| } |
| |
| @Override |
| public ImmutableList<Step> getBuildSteps( |
| BuildContext context, |
| BuildableContext buildableContext) { |
| |
| // Cache the generated source and header. |
| buildableContext.recordArtifact(outputHeader); |
| buildableContext.recordArtifact(outputSource); |
| |
| return ImmutableList.of( |
| new MkdirStep(outputSource.getParent()), |
| new RmStep(outputSource, /* shouldForceDeletion */ true), |
| new MkdirStep(outputHeader.getParent()), |
| new RmStep(outputHeader, /* shouldForceDeletion */ true), |
| new LexStep( |
| lex, |
| flags, |
| outputSource, |
| outputHeader, |
| getResolver().getPath(input))); |
| } |
| |
| @Nullable |
| @Override |
| public Path getPathToOutputFile() { |
| return null; |
| } |
| |
| } |