src/java_tools/buildjar/java/com/google/devtools/build/buildjar/JavaLibraryBuildRequest.java - bazel - Git at Google

 // 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.buildjar;

 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.collect.ImmutableList.toImmutableList;
 import static com.google.common.collect.ImmutableSet.toImmutableSet;

 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Joiner;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.io.MoreFiles;
 import com.google.devtools.build.buildjar.instrumentation.JacocoInstrumentationProcessor;
 import com.google.devtools.build.buildjar.javac.BlazeJavacArguments;
 import com.google.devtools.build.buildjar.javac.JavacOptions;
 import com.google.devtools.build.buildjar.javac.JavacOptions.FilteredJavacopts;
 import com.google.devtools.build.buildjar.javac.plugins.BlazeJavaCompilerPlugin;
 import com.google.devtools.build.buildjar.javac.plugins.dependency.DependencyModule;
 import com.google.devtools.build.buildjar.javac.plugins.processing.AnnotationProcessingModule;
 import java.io.IOException;
 import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.Map;
 import java.util.OptionalInt;
 import javax.annotation.Nullable;

 /** All the information needed to perform a single Java library build operation. */
 public final class JavaLibraryBuildRequest {
   private final ImmutableList<String> javacOpts;

   /** The directory relative to which all other paths should be resolved. */
   private final Path workDir;

   /** Where to store source files generated by annotation processors. */
   private final Path sourceGenDir;

   /** The path to an output jar for source files generated by annotation processors. */
   private final Path generatedSourcesOutputJar;

   private final ArrayList<Path> sourceFiles;
   private final ImmutableList<Path> sourceJars;

   private final ImmutableList<Path> sourcePath;
   private final ImmutableList<Path> classPath;
   private final ImmutableList<Path> bootClassPath;
   private final Path system;

   private final ImmutableList<Path> processorPath;
   private final List<String> processorNames;

   private final Path outputJar;
   private final Path nativeHeaderOutput;
   @Nullable private final String targetLabel;
   @Nullable private final String injectingRuleKind;

   private final Path classDir;
   private final Path tempDir;

   private JacocoInstrumentationProcessor jacocoInstrumentationProcessor;

   private final boolean compressJar;

   private final OptionsParser.ReduceClasspathMode reduceClasspathMode;
   private final int fullClasspathLength;
   private final int reducedClasspathLength;

   /** Repository for all dependency-related information. */
   private final DependencyModule dependencyModule;

   /** Repository for information about annotation processor-generated symbols. */
   private final AnnotationProcessingModule processingModule;

   /** List of plugins that are given to javac. */
   private final ImmutableList<BlazeJavaCompilerPlugin> plugins;

   private final OptionalInt requestId;

   /**
    * Constructs a build from a list of command args. Sets the same JavacRunner for both compilation
    * and annotation processing.
    *
    * @param optionsParser the parsed command line args.
    * @param extraPlugins extraneous plugins to use in addition to the strict dependency module.
    * @throws InvalidCommandLineException on any command line error
    */
   public JavaLibraryBuildRequest(
       OptionsParser optionsParser, List<BlazeJavaCompilerPlugin> extraPlugins)
       throws InvalidCommandLineException, IOException {
     this(optionsParser, extraPlugins, new DependencyModule.Builder(), Path.of(""));
   }

   /**
    * Constructs a build from a list of command args. Sets the same JavacRunner for both compilation
    * and annotation processing.
    *
    * @param optionsParser the parsed command line args.
    * @param extraPlugins extraneous plugins to use in addition to the strict dependency module.
    * @param depsBuilder a preconstructed dependency module builder.
    * @param workDir the directory relative to which all other paths should be resolved.
    * @throws InvalidCommandLineException on any command line error
    */
   public JavaLibraryBuildRequest(
       OptionsParser optionsParser,
       List<BlazeJavaCompilerPlugin> extraPlugins,
       DependencyModule.Builder depsBuilder,
       Path workDir)
       throws InvalidCommandLineException, IOException {
     this(optionsParser, extraPlugins, depsBuilder, workDir, OptionalInt.empty());
   }

   /**
    * Constructs a build from a list of command args. Sets the same JavacRunner for both compilation
    * and annotation processing.
    *
    * @param optionsParser the parsed command line args.
    * @param extraPlugins extraneous plugins to use in addition to the strict dependency module.
    * @param depsBuilder a preconstructed dependency module builder.
    * @param requestId the id of executed request to builder.
    * @throws InvalidCommandLineException on any command line error
    */
   public JavaLibraryBuildRequest(
       OptionsParser optionsParser,
       List<BlazeJavaCompilerPlugin> extraPlugins,
       DependencyModule.Builder depsBuilder,
       OptionalInt requestId)
       throws InvalidCommandLineException, IOException {
     this(optionsParser, extraPlugins, depsBuilder, Path.of(""), requestId);
   }

   /**
    * Constructs a build from a list of command args. Sets the same JavacRunner for both compilation
    * and annotation processing.
    *
    * @param optionsParser the parsed command line args.
    * @param extraPlugins extraneous plugins to use in addition to the strict dependency module.
    * @param depsBuilder a preconstructed dependency module builder.
    * @throws InvalidCommandLineException on any command line error
    */
   public JavaLibraryBuildRequest(
       OptionsParser optionsParser,
       List<BlazeJavaCompilerPlugin> extraPlugins,
       DependencyModule.Builder depsBuilder,
       Path workDir,
       OptionalInt requestId)
       throws InvalidCommandLineException, IOException {
     // Keep this first as it is used by asPath.
     this.workDir = workDir;
     depsBuilder.setDirectJars(
         optionsParser.directJars().stream().map(this::asPath).collect(toImmutableSet()));
     if (optionsParser.getStrictJavaDeps() != null) {
       depsBuilder.setStrictJavaDeps(optionsParser.getStrictJavaDeps());
     }
     if (optionsParser.getOutputDepsProtoFile() != null) {
       depsBuilder.setOutputDepsProtoFile(asPath(optionsParser.getOutputDepsProtoFile()));
     }
     depsBuilder.addDepsArtifacts(asPaths(optionsParser.getDepsArtifacts()));
     depsBuilder.setPlatformJars(
         optionsParser.getBootClassPath().stream().map(this::asPath).collect(toImmutableSet()));
     if (optionsParser.reduceClasspathMode() != OptionsParser.ReduceClasspathMode.NONE) {
       depsBuilder.setReduceClasspath();
     }
     if (optionsParser.getTargetLabel() != null) {
       depsBuilder.setTargetLabel(optionsParser.getTargetLabel());
     }
     this.dependencyModule = depsBuilder.build();
     this.sourceGenDir =
         deriveDirectory(optionsParser.getTargetLabel(), optionsParser.getOutputJar(), "_sources");

     AnnotationProcessingModule.Builder processingBuilder = AnnotationProcessingModule.builder();
     processingBuilder.setSourceGenDir(sourceGenDir);
     if (optionsParser.getManifestProtoPath() != null) {
       processingBuilder.setManifestProtoPath(asPath(optionsParser.getManifestProtoPath()));
     }
     this.processingModule = processingBuilder.build();

     ImmutableList.Builder<BlazeJavaCompilerPlugin> pluginsBuilder =
         ImmutableList.<BlazeJavaCompilerPlugin>builder().add(dependencyModule.getPlugin());
     processingModule.registerPlugin(pluginsBuilder);
     pluginsBuilder.addAll(extraPlugins);
     this.plugins = pluginsBuilder.build();

     this.compressJar = optionsParser.compressJar();
     this.reduceClasspathMode = optionsParser.reduceClasspathMode();
     this.fullClasspathLength = optionsParser.fullClasspathLength();
     this.reducedClasspathLength = optionsParser.reducedClasspathLength();
     this.sourceFiles = new ArrayList<>(asPaths(optionsParser.getSourceFiles()));
     this.sourceJars = asPaths(optionsParser.getSourceJars());
     this.classPath = asPaths(optionsParser.getClassPath());
     this.sourcePath = asPaths(optionsParser.getSourcePath());
     this.bootClassPath = asPaths(optionsParser.getBootClassPath());
     this.system = asPath(optionsParser.getSystem());
     this.processorPath = asPaths(optionsParser.getProcessorPath());
     this.processorNames = optionsParser.getProcessorNames();
     this.classDir =
         deriveDirectory(optionsParser.getTargetLabel(), optionsParser.getOutputJar(), "_classes");
     this.tempDir =
         deriveDirectory(optionsParser.getTargetLabel(), optionsParser.getOutputJar(), "_tmp");
     this.outputJar = asPath(optionsParser.getOutputJar());
     this.nativeHeaderOutput = asPath(optionsParser.getNativeHeaderOutput());
     for (Map.Entry<String, List<String>> entry : optionsParser.getPostProcessors().entrySet()) {
       switch (entry.getKey()) {
         case "jacoco":
           this.jacocoInstrumentationProcessor =
               JacocoInstrumentationProcessor.create(entry.getValue());
           break;
         default:
           throw new AssertionError("unsupported post-processor " + entry.getKey());
       }
     }
     this.javacOpts = ImmutableList.copyOf(optionsParser.getJavacOpts());
     this.generatedSourcesOutputJar = asPath(optionsParser.getGeneratedSourcesOutputJar());
     this.targetLabel = optionsParser.getTargetLabel();
     this.injectingRuleKind = optionsParser.getInjectingRuleKind();
     this.requestId = requestId;
   }

   /**
    * Derive a temporary directory path based on the path to the output jar, to avoid breaking
    * fragile assumptions made by the implementation of javahotswap.
    */
   // TODO(b/169793789): kill this with fire if javahotswap starts using jars instead of classes
   @VisibleForTesting
   static Path deriveDirectory(String label, String outputJar, String suffix, Path workDir) {
     checkArgument(label != null, "--target_label is required");
     checkArgument(outputJar != null, "--output is required");
     checkArgument(
         label.contains(":"), "--target_label must be a canonical label (containing a `:`)");

     Path path = workDir.resolve(outputJar);
     String name = MoreFiles.getNameWithoutExtension(path);
     String base = label.substring(label.lastIndexOf(':') + 1);
     return path.resolveSibling("_javac").resolve(base).resolve(name + suffix);
   }

   private Path deriveDirectory(String label, String outputJar, String suffix) {
     return deriveDirectory(label, outputJar, suffix, workDir);
   }

   private ImmutableList<Path> asPaths(Collection<String> paths) {
     return paths.stream().map(this::asPath).collect(toImmutableList());
   }

   @Nullable
   private Path asPath(@Nullable String path) {
     return path != null ? workDir.resolve(path) : null;
   }

   public ImmutableList<String> getJavacOpts() {
     return javacOpts;
   }

   public Path getSourceGenDir() {
     return sourceGenDir;
   }

   public ImmutableList<Path> getSourcePath() {
     return sourcePath;
   }

   public Path getGeneratedSourcesOutputJar() {
     return generatedSourcesOutputJar;
   }

   public ArrayList<Path> getSourceFiles() {
     // TODO(cushon): This is being modified after parsing to add files from source jars.
     return sourceFiles;
   }

   public ImmutableList<Path> getSourceJars() {
     return sourceJars;
   }

   public ImmutableList<Path> getClassPath() {
     return classPath;
   }

   public ImmutableList<Path> getBootClassPath() {
     return bootClassPath;
   }

   public Path getSystem() {
     return system;
   }

   public ImmutableList<Path> getProcessorPath() {
     return processorPath;
   }

   public List<String> getProcessors() {
     // TODO(bazel-team): This might be modified by a JavaLibraryBuilder to enable specific
     // annotation processors.
     return processorNames;
   }

   public Path getOutputJar() {
     return outputJar;
   }

   public Path getNativeHeaderOutput() {
     return nativeHeaderOutput;
   }

   public Path getClassDir() {
     return classDir;
   }

   public Path getTempDir() {
     return tempDir;
   }

   public Path getNativeHeaderDir() {
     return getTempDir().resolve("native_headers");
   }

   public JacocoInstrumentationProcessor getJacocoInstrumentationProcessor() {
     return jacocoInstrumentationProcessor;
   }

   public boolean compressJar() {
     return compressJar;
   }

   public OptionsParser.ReduceClasspathMode reduceClasspathMode() {
     return reduceClasspathMode;
   }

   public int fullClasspathLength() {
     return fullClasspathLength;
   }

   public int reducedClasspathLength() {
     return reducedClasspathLength;
   }

   public DependencyModule getDependencyModule() {
     return dependencyModule;
   }

   public AnnotationProcessingModule getProcessingModule() {
     return processingModule;
   }

   public ImmutableList<BlazeJavaCompilerPlugin> getPlugins() {
     return plugins;
   }

   public OptionalInt getRequestId() {
     return requestId;
   }

   @Nullable
   public String getTargetLabel() {
     return targetLabel;
   }

   @Nullable
   public String getInjectingRuleKind() {
     return injectingRuleKind;
   }

   public BlazeJavacArguments toBlazeJavacArguments(ImmutableList<Path> classPath) {
     BlazeJavacArguments.Builder builder =
         BlazeJavacArguments.builder()
             .classPath(classPath)
             .classOutput(getClassDir())
             .bootClassPath(getBootClassPath())
             .system(getSystem())
             .sourceFiles(ImmutableList.copyOf(getSourceFiles()))
             .sourcePath(getSourcePath())
             .sourceOutput(getSourceGenDir())
             .processorPath(getProcessorPath())
             .plugins(getPlugins())
             .requestId(getRequestId());
     addJavacArguments(builder);
     // Performance optimization: when reduced classpaths are enabled, stop the compilation after
     // the first diagnostic that would result in fallback to the transitive classpath. The user
     // only sees diagnostics from the fallback compilation, so collecting additional diagnostics
     // from the reduced classpath compilation is a waste of time.
     // Exception: this doesn't hold if annotation processing is enabled, since diagnostics may be
     // resolved during subsequent processing rounds.
     if (reduceClasspathMode.equals(OptionsParser.ReduceClasspathMode.BAZEL_REDUCED)
         && getProcessors().isEmpty()) {
       builder.failFast(getProcessors().isEmpty());
     }
     if (getNativeHeaderOutput() != null) {
       builder.nativeHeaderOutput(getNativeHeaderDir());
     }
     return builder.build();
   }

   /** Constructs a command line that can be used for a javac invocation. */
   void addJavacArguments(BlazeJavacArguments.Builder builder) {
     FilteredJavacopts filtered = JavacOptions.filterJavacopts(getJavacOpts());
     builder.blazeJavacOptions(filtered.bazelJavacopts());

     ImmutableList<String> javacOpts = filtered.standardJavacopts();

     ImmutableList.Builder<String> javacArguments = ImmutableList.builder();

     // default to -implicit:none, but allow the user to override with -implicit:class.
     javacArguments.add("-implicit:none");
     javacArguments.addAll(javacOpts);

     if (!getProcessors().isEmpty() && !getSourceFiles().isEmpty()) {
       // ImmutableSet.copyOf maintains order
       ImmutableSet<String> deduplicatedProcessorNames = ImmutableSet.copyOf(getProcessors());
       javacArguments.add("-processor");
       javacArguments.add(Joiner.on(',').join(deduplicatedProcessorNames));
     } else {
       // This is necessary because some jars contain discoverable annotation processors that
       // previously didn't run, and they break builds if the "-proc:none" option is not passed to
       // javac.
       javacArguments.add("-proc:none");
     }

     for (String option : javacOpts) {
       if (option.startsWith("-J")) { // ignore the VM options.
         continue;
       }
       if (option.equals("-processor") || option.equals("-processorpath")) {
         throw new IllegalStateException(
             "Using "
                 + option
                 + " in javacopts is no longer supported."
                 + " Use a java_plugin() rule instead.");
       }
     }

     builder.javacOptions(javacArguments.build());
   }
 }
	// 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.buildjar;

	import static com.google.common.base.Preconditions.checkArgument;
	import static com.google.common.collect.ImmutableList.toImmutableList;
	import static com.google.common.collect.ImmutableSet.toImmutableSet;

	import com.google.common.annotations.VisibleForTesting;
	import com.google.common.base.Joiner;
	import com.google.common.collect.ImmutableList;
	import com.google.common.collect.ImmutableSet;
	import com.google.common.io.MoreFiles;
	import com.google.devtools.build.buildjar.instrumentation.JacocoInstrumentationProcessor;
	import com.google.devtools.build.buildjar.javac.BlazeJavacArguments;
	import com.google.devtools.build.buildjar.javac.JavacOptions;
	import com.google.devtools.build.buildjar.javac.JavacOptions.FilteredJavacopts;
	import com.google.devtools.build.buildjar.javac.plugins.BlazeJavaCompilerPlugin;
	import com.google.devtools.build.buildjar.javac.plugins.dependency.DependencyModule;
	import com.google.devtools.build.buildjar.javac.plugins.processing.AnnotationProcessingModule;
	import java.io.IOException;
	import java.nio.file.Path;
	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.List;
	import java.util.Map;
	import java.util.OptionalInt;
	import javax.annotation.Nullable;

	/** All the information needed to perform a single Java library build operation. */
	public final class JavaLibraryBuildRequest {
	private final ImmutableList<String> javacOpts;

	/** The directory relative to which all other paths should be resolved. */
	private final Path workDir;

	/** Where to store source files generated by annotation processors. */
	private final Path sourceGenDir;

	/** The path to an output jar for source files generated by annotation processors. */
	private final Path generatedSourcesOutputJar;

	private final ArrayList<Path> sourceFiles;
	private final ImmutableList<Path> sourceJars;

	private final ImmutableList<Path> sourcePath;
	private final ImmutableList<Path> classPath;
	private final ImmutableList<Path> bootClassPath;
	private final Path system;

	private final ImmutableList<Path> processorPath;
	private final List<String> processorNames;

	private final Path outputJar;
	private final Path nativeHeaderOutput;
	@Nullable private final String targetLabel;
	@Nullable private final String injectingRuleKind;

	private final Path classDir;
	private final Path tempDir;

	private JacocoInstrumentationProcessor jacocoInstrumentationProcessor;

	private final boolean compressJar;

	private final OptionsParser.ReduceClasspathMode reduceClasspathMode;
	private final int fullClasspathLength;
	private final int reducedClasspathLength;

	/** Repository for all dependency-related information. */
	private final DependencyModule dependencyModule;

	/** Repository for information about annotation processor-generated symbols. */
	private final AnnotationProcessingModule processingModule;

	/** List of plugins that are given to javac. */
	private final ImmutableList<BlazeJavaCompilerPlugin> plugins;

	private final OptionalInt requestId;

	/**
	* Constructs a build from a list of command args. Sets the same JavacRunner for both compilation
	* and annotation processing.
	*
	* @param optionsParser the parsed command line args.
	* @param extraPlugins extraneous plugins to use in addition to the strict dependency module.
	* @throws InvalidCommandLineException on any command line error
	*/
	public JavaLibraryBuildRequest(
	OptionsParser optionsParser, List<BlazeJavaCompilerPlugin> extraPlugins)
	throws InvalidCommandLineException, IOException {
	this(optionsParser, extraPlugins, new DependencyModule.Builder(), Path.of(""));
	}

	/**
	* Constructs a build from a list of command args. Sets the same JavacRunner for both compilation
	* and annotation processing.
	*
	* @param optionsParser the parsed command line args.
	* @param extraPlugins extraneous plugins to use in addition to the strict dependency module.
	* @param depsBuilder a preconstructed dependency module builder.
	* @param workDir the directory relative to which all other paths should be resolved.
	* @throws InvalidCommandLineException on any command line error
	*/
	public JavaLibraryBuildRequest(
	OptionsParser optionsParser,
	List<BlazeJavaCompilerPlugin> extraPlugins,
	DependencyModule.Builder depsBuilder,
	Path workDir)
	throws InvalidCommandLineException, IOException {
	this(optionsParser, extraPlugins, depsBuilder, workDir, OptionalInt.empty());
	}

	/**
	* Constructs a build from a list of command args. Sets the same JavacRunner for both compilation
	* and annotation processing.
	*
	* @param optionsParser the parsed command line args.
	* @param extraPlugins extraneous plugins to use in addition to the strict dependency module.
	* @param depsBuilder a preconstructed dependency module builder.
	* @param requestId the id of executed request to builder.
	* @throws InvalidCommandLineException on any command line error
	*/
	public JavaLibraryBuildRequest(
	OptionsParser optionsParser,
	List<BlazeJavaCompilerPlugin> extraPlugins,
	DependencyModule.Builder depsBuilder,
	OptionalInt requestId)
	throws InvalidCommandLineException, IOException {
	this(optionsParser, extraPlugins, depsBuilder, Path.of(""), requestId);
	}

	/**
	* Constructs a build from a list of command args. Sets the same JavacRunner for both compilation
	* and annotation processing.
	*
	* @param optionsParser the parsed command line args.
	* @param extraPlugins extraneous plugins to use in addition to the strict dependency module.
	* @param depsBuilder a preconstructed dependency module builder.
	* @throws InvalidCommandLineException on any command line error
	*/
	public JavaLibraryBuildRequest(
	OptionsParser optionsParser,
	List<BlazeJavaCompilerPlugin> extraPlugins,
	DependencyModule.Builder depsBuilder,
	Path workDir,
	OptionalInt requestId)
	throws InvalidCommandLineException, IOException {
	// Keep this first as it is used by asPath.
	this.workDir = workDir;
	depsBuilder.setDirectJars(
	optionsParser.directJars().stream().map(this::asPath).collect(toImmutableSet()));
	if (optionsParser.getStrictJavaDeps() != null) {
	depsBuilder.setStrictJavaDeps(optionsParser.getStrictJavaDeps());
	}
	if (optionsParser.getOutputDepsProtoFile() != null) {
	depsBuilder.setOutputDepsProtoFile(asPath(optionsParser.getOutputDepsProtoFile()));
	}
	depsBuilder.addDepsArtifacts(asPaths(optionsParser.getDepsArtifacts()));
	depsBuilder.setPlatformJars(
	optionsParser.getBootClassPath().stream().map(this::asPath).collect(toImmutableSet()));
	if (optionsParser.reduceClasspathMode() != OptionsParser.ReduceClasspathMode.NONE) {
	depsBuilder.setReduceClasspath();
	}
	if (optionsParser.getTargetLabel() != null) {
	depsBuilder.setTargetLabel(optionsParser.getTargetLabel());
	}
	this.dependencyModule = depsBuilder.build();
	this.sourceGenDir =
	deriveDirectory(optionsParser.getTargetLabel(), optionsParser.getOutputJar(), "_sources");

	AnnotationProcessingModule.Builder processingBuilder = AnnotationProcessingModule.builder();
	processingBuilder.setSourceGenDir(sourceGenDir);
	if (optionsParser.getManifestProtoPath() != null) {
	processingBuilder.setManifestProtoPath(asPath(optionsParser.getManifestProtoPath()));
	}
	this.processingModule = processingBuilder.build();

	ImmutableList.Builder<BlazeJavaCompilerPlugin> pluginsBuilder =
	ImmutableList.<BlazeJavaCompilerPlugin>builder().add(dependencyModule.getPlugin());
	processingModule.registerPlugin(pluginsBuilder);
	pluginsBuilder.addAll(extraPlugins);
	this.plugins = pluginsBuilder.build();

	this.compressJar = optionsParser.compressJar();
	this.reduceClasspathMode = optionsParser.reduceClasspathMode();
	this.fullClasspathLength = optionsParser.fullClasspathLength();
	this.reducedClasspathLength = optionsParser.reducedClasspathLength();
	this.sourceFiles = new ArrayList<>(asPaths(optionsParser.getSourceFiles()));
	this.sourceJars = asPaths(optionsParser.getSourceJars());
	this.classPath = asPaths(optionsParser.getClassPath());
	this.sourcePath = asPaths(optionsParser.getSourcePath());
	this.bootClassPath = asPaths(optionsParser.getBootClassPath());
	this.system = asPath(optionsParser.getSystem());
	this.processorPath = asPaths(optionsParser.getProcessorPath());
	this.processorNames = optionsParser.getProcessorNames();
	this.classDir =
	deriveDirectory(optionsParser.getTargetLabel(), optionsParser.getOutputJar(), "_classes");
	this.tempDir =
	deriveDirectory(optionsParser.getTargetLabel(), optionsParser.getOutputJar(), "_tmp");
	this.outputJar = asPath(optionsParser.getOutputJar());
	this.nativeHeaderOutput = asPath(optionsParser.getNativeHeaderOutput());
	for (Map.Entry<String, List<String>> entry : optionsParser.getPostProcessors().entrySet()) {
	switch (entry.getKey()) {
	case "jacoco":
	this.jacocoInstrumentationProcessor =
	JacocoInstrumentationProcessor.create(entry.getValue());
	break;
	default:
	throw new AssertionError("unsupported post-processor " + entry.getKey());
	}
	}
	this.javacOpts = ImmutableList.copyOf(optionsParser.getJavacOpts());
	this.generatedSourcesOutputJar = asPath(optionsParser.getGeneratedSourcesOutputJar());
	this.targetLabel = optionsParser.getTargetLabel();
	this.injectingRuleKind = optionsParser.getInjectingRuleKind();
	this.requestId = requestId;
	}

	/**
	* Derive a temporary directory path based on the path to the output jar, to avoid breaking
	* fragile assumptions made by the implementation of javahotswap.
	*/
	// TODO(b/169793789): kill this with fire if javahotswap starts using jars instead of classes
	@VisibleForTesting
	static Path deriveDirectory(String label, String outputJar, String suffix, Path workDir) {
	checkArgument(label != null, "--target_label is required");
	checkArgument(outputJar != null, "--output is required");
	checkArgument(
	label.contains(":"), "--target_label must be a canonical label (containing a `:`)");

	Path path = workDir.resolve(outputJar);
	String name = MoreFiles.getNameWithoutExtension(path);
	String base = label.substring(label.lastIndexOf(':') + 1);
	return path.resolveSibling("_javac").resolve(base).resolve(name + suffix);
	}

	private Path deriveDirectory(String label, String outputJar, String suffix) {
	return deriveDirectory(label, outputJar, suffix, workDir);
	}

	private ImmutableList<Path> asPaths(Collection<String> paths) {
	return paths.stream().map(this::asPath).collect(toImmutableList());
	}

	@Nullable
	private Path asPath(@Nullable String path) {
	return path != null ? workDir.resolve(path) : null;
	}

	public ImmutableList<String> getJavacOpts() {
	return javacOpts;
	}

	public Path getSourceGenDir() {
	return sourceGenDir;
	}

	public ImmutableList<Path> getSourcePath() {
	return sourcePath;
	}

	public Path getGeneratedSourcesOutputJar() {
	return generatedSourcesOutputJar;
	}

	public ArrayList<Path> getSourceFiles() {
	// TODO(cushon): This is being modified after parsing to add files from source jars.
	return sourceFiles;
	}

	public ImmutableList<Path> getSourceJars() {
	return sourceJars;
	}

	public ImmutableList<Path> getClassPath() {
	return classPath;
	}

	public ImmutableList<Path> getBootClassPath() {
	return bootClassPath;
	}

	public Path getSystem() {
	return system;
	}

	public ImmutableList<Path> getProcessorPath() {
	return processorPath;
	}

	public List<String> getProcessors() {
	// TODO(bazel-team): This might be modified by a JavaLibraryBuilder to enable specific
	// annotation processors.
	return processorNames;
	}

	public Path getOutputJar() {
	return outputJar;
	}

	public Path getNativeHeaderOutput() {
	return nativeHeaderOutput;
	}

	public Path getClassDir() {
	return classDir;
	}

	public Path getTempDir() {
	return tempDir;
	}

	public Path getNativeHeaderDir() {
	return getTempDir().resolve("native_headers");
	}

	public JacocoInstrumentationProcessor getJacocoInstrumentationProcessor() {
	return jacocoInstrumentationProcessor;
	}

	public boolean compressJar() {
	return compressJar;
	}

	public OptionsParser.ReduceClasspathMode reduceClasspathMode() {
	return reduceClasspathMode;
	}

	public int fullClasspathLength() {
	return fullClasspathLength;
	}

	public int reducedClasspathLength() {
	return reducedClasspathLength;
	}

	public DependencyModule getDependencyModule() {
	return dependencyModule;
	}

	public AnnotationProcessingModule getProcessingModule() {
	return processingModule;
	}

	public ImmutableList<BlazeJavaCompilerPlugin> getPlugins() {
	return plugins;
	}

	public OptionalInt getRequestId() {
	return requestId;
	}

	@Nullable
	public String getTargetLabel() {
	return targetLabel;
	}

	@Nullable
	public String getInjectingRuleKind() {
	return injectingRuleKind;
	}

	public BlazeJavacArguments toBlazeJavacArguments(ImmutableList<Path> classPath) {
	BlazeJavacArguments.Builder builder =
	BlazeJavacArguments.builder()
	.classPath(classPath)
	.classOutput(getClassDir())
	.bootClassPath(getBootClassPath())
	.system(getSystem())
	.sourceFiles(ImmutableList.copyOf(getSourceFiles()))
	.sourcePath(getSourcePath())
	.sourceOutput(getSourceGenDir())
	.processorPath(getProcessorPath())
	.plugins(getPlugins())
	.requestId(getRequestId());
	addJavacArguments(builder);
	// Performance optimization: when reduced classpaths are enabled, stop the compilation after
	// the first diagnostic that would result in fallback to the transitive classpath. The user
	// only sees diagnostics from the fallback compilation, so collecting additional diagnostics
	// from the reduced classpath compilation is a waste of time.
	// Exception: this doesn't hold if annotation processing is enabled, since diagnostics may be
	// resolved during subsequent processing rounds.
	if (reduceClasspathMode.equals(OptionsParser.ReduceClasspathMode.BAZEL_REDUCED)
	&& getProcessors().isEmpty()) {
	builder.failFast(getProcessors().isEmpty());
	}
	if (getNativeHeaderOutput() != null) {
	builder.nativeHeaderOutput(getNativeHeaderDir());
	}
	return builder.build();
	}

	/** Constructs a command line that can be used for a javac invocation. */
	void addJavacArguments(BlazeJavacArguments.Builder builder) {
	FilteredJavacopts filtered = JavacOptions.filterJavacopts(getJavacOpts());
	builder.blazeJavacOptions(filtered.bazelJavacopts());

	ImmutableList<String> javacOpts = filtered.standardJavacopts();

	ImmutableList.Builder<String> javacArguments = ImmutableList.builder();

	// default to -implicit:none, but allow the user to override with -implicit:class.
	javacArguments.add("-implicit:none");
	javacArguments.addAll(javacOpts);

	if (!getProcessors().isEmpty() && !getSourceFiles().isEmpty()) {
	// ImmutableSet.copyOf maintains order
	ImmutableSet<String> deduplicatedProcessorNames = ImmutableSet.copyOf(getProcessors());
	javacArguments.add("-processor");
	javacArguments.add(Joiner.on(',').join(deduplicatedProcessorNames));
	} else {
	// This is necessary because some jars contain discoverable annotation processors that
	// previously didn't run, and they break builds if the "-proc:none" option is not passed to
	// javac.
	javacArguments.add("-proc:none");
	}

	for (String option : javacOpts) {
	if (option.startsWith("-J")) { // ignore the VM options.
	continue;
	}
	if (option.equals("-processor") \|\| option.equals("-processorpath")) {
	throw new IllegalStateException(
	"Using "
	+ option
	+ " in javacopts is no longer supported."
	+ " Use a java_plugin() rule instead.");
	}
	}

	builder.javacOptions(javacArguments.build());
	}
	}