private static boolean checkChunkRebuildNeeded(
      CompileContext context, GroovycOutputParser parser) {
    if (JavaBuilderUtil.isForcedRecompilationAllJavaModules(context) || !parser.shouldRetry()) {
      return false;
    }

    if (CHUNK_REBUILD_ORDERED.get(context) != null) {
      CHUNK_REBUILD_ORDERED.set(context, null);
      return false;
    }

    CHUNK_REBUILD_ORDERED.set(context, Boolean.TRUE);
    LOG.info("Order chunk rebuild");
    return true;
  }
  public ModuleLevelBuilder.ExitCode build(
      final CompileContext context,
      final ModuleChunk chunk,
      DirtyFilesHolder<JavaSourceRootDescriptor, ModuleBuildTarget> dirtyFilesHolder,
      OutputConsumer outputConsumer)
      throws ProjectBuildException {
    if (GreclipseBuilder.useGreclipse(context)) return ExitCode.NOTHING_DONE;

    long start = 0;
    try {
      JpsGroovySettings settings =
          JpsGroovySettings.getSettings(context.getProjectDescriptor().getProject());

      Ref<Boolean> hasStubExcludes = Ref.create(false);
      final List<File> toCompile =
          collectChangedFiles(context, dirtyFilesHolder, myForStubs, false, hasStubExcludes);
      if (toCompile.isEmpty()) {
        return hasFilesToCompileForNextRound(context)
            ? ExitCode.ADDITIONAL_PASS_REQUIRED
            : ExitCode.NOTHING_DONE;
      }
      if (Utils.IS_TEST_MODE || LOG.isDebugEnabled()) {
        LOG.info("forStubs=" + myForStubs);
      }

      Map<ModuleBuildTarget, String> finalOutputs = getCanonicalModuleOutputs(context, chunk, this);
      if (finalOutputs == null) {
        return ExitCode.ABORT;
      }

      start = System.currentTimeMillis();

      Map<ModuleBuildTarget, String> generationOutputs =
          myForStubs ? getStubGenerationOutputs(chunk, context) : finalOutputs;
      String compilerOutput = generationOutputs.get(chunk.representativeTarget());

      GroovycOutputParser parser =
          runGroovycOrContinuation(
              context,
              chunk,
              settings,
              finalOutputs,
              compilerOutput,
              toCompile,
              hasStubExcludes.get());

      Map<ModuleBuildTarget, Collection<GroovycOutputParser.OutputItem>> compiled =
          processCompiledFiles(
              context, chunk, generationOutputs, compilerOutput, parser.getSuccessfullyCompiled());

      if (checkChunkRebuildNeeded(context, parser)) {
        clearContinuation(context, chunk);
        return ExitCode.CHUNK_REBUILD_REQUIRED;
      }

      if (myForStubs) {
        addStubRootsToJavacSourcePath(context, generationOutputs);
        rememberStubSources(context, compiled);
      }

      for (CompilerMessage message : parser.getCompilerMessages()) {
        context.processMessage(message);
      }

      if (!myForStubs) {
        updateDependencies(context, toCompile, compiled, outputConsumer, this);
      }
      return hasFilesToCompileForNextRound(context)
          ? ExitCode.ADDITIONAL_PASS_REQUIRED
          : ExitCode.OK;
    } catch (Exception e) {
      throw new ProjectBuildException(e);
    } finally {
      if (start > 0 && LOG.isDebugEnabled()) {
        LOG.debug(
            myBuilderName
                + " took "
                + (System.currentTimeMillis() - start)
                + " on "
                + chunk.getName());
      }
      if (!myForStubs) {
        FILES_MARKED_DIRTY_FOR_NEXT_ROUND.set(context, null);
      }
    }
  }
  @NotNull
  private GroovycOutputParser runGroovycOrContinuation(
      CompileContext context,
      ModuleChunk chunk,
      JpsGroovySettings settings,
      Map<ModuleBuildTarget, String> finalOutputs,
      String compilerOutput,
      List<File> toCompile,
      boolean hasStubExcludes)
      throws Exception {
    GroovycContinuation continuation = takeContinuation(context, chunk);
    if (continuation != null) {
      if (Utils.IS_TEST_MODE || LOG.isDebugEnabled()) {
        LOG.info("using continuation for " + chunk);
      }
      return continuation.continueCompilation();
    }

    final Set<String> toCompilePaths = getPathsToCompile(toCompile);

    JpsSdk<JpsDummyElement> jdk = getJdk(chunk);
    String version = jdk == null ? SystemInfo.JAVA_RUNTIME_VERSION : jdk.getVersionString();
    boolean inProcess = "true".equals(System.getProperty("groovyc.in.process", "true"));
    boolean mayDependOnUtilJar =
        version != null && StringUtil.compareVersionNumbers(version, "1.6") >= 0;
    boolean optimizeClassLoading =
        !inProcess
            && mayDependOnUtilJar
            && ourOptimizeThreshold != 0
            && toCompilePaths.size() >= ourOptimizeThreshold;

    Map<String, String> class2Src =
        buildClassToSourceMap(chunk, context, toCompilePaths, finalOutputs);

    final String encoding =
        context
            .getProjectDescriptor()
            .getEncodingConfiguration()
            .getPreferredModuleChunkEncoding(chunk);
    List<String> patchers = new ArrayList<String>();

    for (GroovyBuilderExtension extension :
        JpsServiceManager.getInstance().getExtensions(GroovyBuilderExtension.class)) {
      patchers.addAll(extension.getCompilationUnitPatchers(context, chunk));
    }

    Collection<String> classpath = generateClasspath(context, chunk);
    if (LOG.isDebugEnabled()) {
      LOG.debug("Optimized class loading: " + optimizeClassLoading);
      LOG.debug("Groovyc classpath: " + classpath);
    }

    final File tempFile =
        GroovycOutputParser.fillFileWithGroovycParameters(
            compilerOutput,
            toCompilePaths,
            finalOutputs.values(),
            class2Src,
            encoding,
            patchers,
            optimizeClassLoading ? StringUtil.join(classpath, File.pathSeparator) : "");
    GroovycFlavor groovyc =
        inProcess
            ? new InProcessGroovyc(finalOutputs.values(), hasStubExcludes)
            : new ForkedGroovyc(optimizeClassLoading, chunk);

    GroovycOutputParser parser = new GroovycOutputParser(chunk, context);

    continuation = groovyc.runGroovyc(classpath, myForStubs, settings, tempFile, parser);
    setContinuation(context, chunk, continuation);
    return parser;
  }