Examples with ImmutableSortedSet com.google.common.collect.ImmutableSortedSet used on opensource projects

Example 1 with ImmutableSortedSet

use of com.google.common.collect.ImmutableSortedSet in project buck by facebook.

the class ApkGenruleDescription method createBuildRule.

@Override
protected <A extends ApkGenruleDescription.Arg> BuildRule createBuildRule(BuildRuleParams params, BuildRuleResolver resolver, A args, Optional<com.facebook.buck.rules.args.Arg> cmd, Optional<com.facebook.buck.rules.args.Arg> bash, Optional<com.facebook.buck.rules.args.Arg> cmdExe) {
    final BuildRule apk = resolver.getRule(args.apk);
    if (!(apk instanceof HasInstallableApk)) {
        throw new HumanReadableException("The 'apk' argument of %s, %s, must correspond to an " + "installable rule, such as android_binary() or apk_genrule().", params.getBuildTarget(), args.apk.getFullyQualifiedName());
    }
    HasInstallableApk installableApk = (HasInstallableApk) apk;
    final Supplier<ImmutableSortedSet<BuildRule>> originalExtraDeps = params.getExtraDeps();
    SourcePathRuleFinder ruleFinder = new SourcePathRuleFinder(resolver);
    return new ApkGenrule(params.copyReplacingExtraDeps(Suppliers.memoize(() -> ImmutableSortedSet.<BuildRule>naturalOrder().addAll(originalExtraDeps.get()).add(installableApk).build())), ruleFinder, args.srcs, cmd, bash, cmdExe, args.type.isPresent() ? args.type : Optional.of("apk"), installableApk.getSourcePathToOutput());
}

Example 2 with ImmutableSortedSet

use of com.google.common.collect.ImmutableSortedSet in project buck by facebook.

the class AndroidLibraryDescription method createBuildRule.

@Override
public <A extends Arg> BuildRule createBuildRule(TargetGraph targetGraph, BuildRuleParams params, BuildRuleResolver resolver, A args) throws NoSuchBuildTargetException {
    if (params.getBuildTarget().getFlavors().contains(JavaLibrary.SRC_JAR)) {
        return new JavaSourceJar(params, args.srcs, args.mavenCoords);
    }
    SourcePathRuleFinder ruleFinder = new SourcePathRuleFinder(resolver);
    JavacOptions javacOptions = JavacOptionsFactory.create(defaultOptions, params, resolver, ruleFinder, args);
    final ImmutableSet.Builder<BuildRule> queriedDepsBuilder = ImmutableSet.builder();
    if (args.depsQuery.isPresent()) {
        queriedDepsBuilder.addAll(QueryUtils.resolveDepQuery(params, args.depsQuery.get(), resolver, targetGraph).collect(Collectors.toList()));
    }
    final ImmutableSet<BuildRule> queriedDeps = queriedDepsBuilder.build();
    AndroidLibraryGraphEnhancer graphEnhancer = new AndroidLibraryGraphEnhancer(params.getBuildTarget(), params.copyReplacingExtraDeps(Suppliers.ofInstance(ImmutableSortedSet.<BuildRule>naturalOrder().addAll(queriedDeps).addAll(resolver.getAllRules(args.exportedDeps)).build())), javacOptions, DependencyMode.FIRST_ORDER, /* forceFinalResourceIds */
    false, args.resourceUnionPackage, args.finalRName, false);
    boolean hasDummyRDotJavaFlavor = params.getBuildTarget().getFlavors().contains(DUMMY_R_DOT_JAVA_FLAVOR);
    if (CalculateAbi.isAbiTarget(params.getBuildTarget())) {
        if (hasDummyRDotJavaFlavor) {
            return graphEnhancer.getBuildableForAndroidResourcesAbi(resolver, ruleFinder);
        }
        BuildTarget libraryTarget = CalculateAbi.getLibraryTarget(params.getBuildTarget());
        BuildRule libraryRule = resolver.requireRule(libraryTarget);
        return CalculateAbi.of(params.getBuildTarget(), ruleFinder, params, Preconditions.checkNotNull(libraryRule.getSourcePathToOutput()));
    }
    Optional<DummyRDotJava> dummyRDotJava = graphEnhancer.getBuildableForAndroidResources(resolver, /* createBuildableIfEmpty */
    hasDummyRDotJavaFlavor);
    if (hasDummyRDotJavaFlavor) {
        return dummyRDotJava.get();
    } else {
        ImmutableSet<Either<SourcePath, Path>> additionalClasspathEntries = ImmutableSet.of();
        if (dummyRDotJava.isPresent()) {
            additionalClasspathEntries = ImmutableSet.of(Either.ofLeft(dummyRDotJava.get().getSourcePathToOutput()));
            ImmutableSortedSet<BuildRule> newDeclaredDeps = ImmutableSortedSet.<BuildRule>naturalOrder().addAll(params.getDeclaredDeps().get()).add(dummyRDotJava.get()).build();
            params = params.copyReplacingDeclaredAndExtraDeps(Suppliers.ofInstance(newDeclaredDeps), params.getExtraDeps());
        }
        AndroidLibraryCompiler compiler = compilerFactory.getCompiler(args.language.orElse(JvmLanguage.JAVA));
        ImmutableSortedSet<BuildRule> exportedDeps = resolver.getAllRules(args.exportedDeps);
        ImmutableSortedSet.Builder<BuildRule> declaredDepsBuilder = ImmutableSortedSet.<BuildRule>naturalOrder().addAll(params.getDeclaredDeps().get()).addAll(queriedDeps).addAll(compiler.getDeclaredDeps(args, resolver));
        ImmutableSortedSet<BuildRule> declaredDeps = declaredDepsBuilder.build();
        ImmutableSortedSet<BuildRule> extraDeps = ImmutableSortedSet.<BuildRule>naturalOrder().addAll(params.getExtraDeps().get()).addAll(BuildRules.getExportedRules(Iterables.concat(declaredDeps, exportedDeps, resolver.getAllRules(args.providedDeps)))).addAll(ruleFinder.filterBuildRuleInputs(javacOptions.getInputs(ruleFinder))).addAll(compiler.getExtraDeps(args, resolver)).build();
        SourcePathResolver pathResolver = new SourcePathResolver(ruleFinder);
        BuildRuleParams androidLibraryParams = params.copyReplacingDeclaredAndExtraDeps(Suppliers.ofInstance(declaredDeps), Suppliers.ofInstance(extraDeps));
        return new AndroidLibrary(androidLibraryParams, pathResolver, ruleFinder, args.srcs, ResourceValidator.validateResources(pathResolver, params.getProjectFilesystem(), args.resources), args.proguardConfig, args.postprocessClassesCommands, exportedDeps, resolver.getAllRules(args.providedDeps), JavaLibraryRules.getAbiInputs(resolver, androidLibraryParams.getDeps()), additionalClasspathEntries, javacOptions, compiler.trackClassUsage(javacOptions), compiler.compileToJar(args, javacOptions, resolver), args.resourcesRoot, args.mavenCoords, args.manifest, args.tests);
    }
}

Example 3 with ImmutableSortedSet

use of com.google.common.collect.ImmutableSortedSet in project buck by facebook.

the class AndroidBinaryGraphEnhancer method addBuildConfigDeps.

/**
   * If the user specified any android_build_config() rules, then we must add some build rules to
   * generate the production {@code BuildConfig.class} files and ensure that they are included in
   * the list of {@link AndroidPackageableCollection#getClasspathEntriesToDex}.
   */
public static ImmutableSortedSet<JavaLibrary> addBuildConfigDeps(BuildRuleParams originalParams, PackageType packageType, EnumSet<ExopackageMode> exopackageModes, BuildConfigFields buildConfigValues, Optional<SourcePath> buildConfigValuesFile, BuildRuleResolver ruleResolver, JavacOptions javacOptions, AndroidPackageableCollection packageableCollection) throws NoSuchBuildTargetException {
    ImmutableSortedSet.Builder<JavaLibrary> result = ImmutableSortedSet.naturalOrder();
    BuildConfigFields buildConfigConstants = BuildConfigFields.fromFields(ImmutableList.of(BuildConfigFields.Field.of("boolean", BuildConfigs.DEBUG_CONSTANT, String.valueOf(packageType != AndroidBinary.PackageType.RELEASE)), BuildConfigFields.Field.of("boolean", BuildConfigs.IS_EXO_CONSTANT, String.valueOf(!exopackageModes.isEmpty())), BuildConfigFields.Field.of("int", BuildConfigs.EXOPACKAGE_FLAGS, String.valueOf(ExopackageMode.toBitmask(exopackageModes)))));
    for (Map.Entry<String, BuildConfigFields> entry : packageableCollection.getBuildConfigs().entrySet()) {
        // Merge the user-defined constants with the APK-specific overrides.
        BuildConfigFields totalBuildConfigValues = BuildConfigFields.empty().putAll(entry.getValue()).putAll(buildConfigValues).putAll(buildConfigConstants);
        // Each enhanced dep needs a unique build target, so we parameterize the build target by the
        // Java package.
        String javaPackage = entry.getKey();
        Flavor flavor = InternalFlavor.of("buildconfig_" + javaPackage.replace('.', '_'));
        BuildTarget buildTargetWithFlavors = BuildTarget.builder(originalParams.getBuildTarget()).addFlavors(flavor).build();
        BuildRuleParams buildConfigParams = new BuildRuleParams(buildTargetWithFlavors, /* declaredDeps */
        Suppliers.ofInstance(ImmutableSortedSet.of()), /* extraDeps */
        Suppliers.ofInstance(ImmutableSortedSet.of()), originalParams.getProjectFilesystem(), originalParams.getCellRoots());
        JavaLibrary buildConfigJavaLibrary = AndroidBuildConfigDescription.createBuildRule(buildConfigParams, javaPackage, totalBuildConfigValues, buildConfigValuesFile, /* useConstantExpressions */
        true, javacOptions, ruleResolver);
        ruleResolver.addToIndex(buildConfigJavaLibrary);
        Preconditions.checkNotNull(buildConfigJavaLibrary.getSourcePathToOutput(), "%s must have an output file.", buildConfigJavaLibrary);
        result.add(buildConfigJavaLibrary);
    }
    return result.build();
}

Example 4 with ImmutableSortedSet

use of com.google.common.collect.ImmutableSortedSet in project buck by facebook.

the class AndroidBinaryGraphEnhancer method createAdditionalBuildables.

AndroidGraphEnhancementResult createAdditionalBuildables() throws NoSuchBuildTargetException {
    ImmutableSortedSet.Builder<BuildRule> enhancedDeps = ImmutableSortedSet.naturalOrder();
    enhancedDeps.addAll(originalDeps);
    ImmutableList.Builder<BuildRule> additionalJavaLibrariesBuilder = ImmutableList.builder();
    AndroidPackageableCollector collector = new AndroidPackageableCollector(originalBuildTarget, buildTargetsToExcludeFromDex, resourcesToExclude, apkModuleGraph);
    collector.addPackageables(AndroidPackageableCollector.getPackageableRules(originalDeps));
    AndroidPackageableCollection packageableCollection = collector.build();
    AndroidPackageableCollection.ResourceDetails resourceDetails = packageableCollection.getResourceDetails();
    AndroidNativeLibsGraphEnhancementResult nativeLibsEnhancementResult = nativeLibsEnhancer.enhance(packageableCollection);
    Optional<ImmutableMap<APKModule, CopyNativeLibraries>> copyNativeLibraries = nativeLibsEnhancementResult.getCopyNativeLibraries();
    if (copyNativeLibraries.isPresent()) {
        ruleResolver.addAllToIndex(copyNativeLibraries.get().values());
        enhancedDeps.addAll(copyNativeLibraries.get().values());
    }
    Optional<ImmutableSortedMap<String, String>> sonameMergeMap = nativeLibsEnhancementResult.getSonameMergeMap();
    if (sonameMergeMap.isPresent() && nativeLibraryMergeCodeGenerator.isPresent()) {
        BuildRule generatorRule = ruleResolver.getRule(nativeLibraryMergeCodeGenerator.get());
        GenerateCodeForMergedLibraryMap generateCodeForMergedLibraryMap = new GenerateCodeForMergedLibraryMap(buildRuleParams.withAppendedFlavor(GENERATE_NATIVE_LIB_MERGE_MAP_GENERATED_CODE_FLAVOR).copyReplacingDeclaredAndExtraDeps(Suppliers.ofInstance(ImmutableSortedSet.of(generatorRule)), Suppliers.ofInstance(ImmutableSortedSet.of())), sonameMergeMap.get(), generatorRule);
        ruleResolver.addToIndex(generateCodeForMergedLibraryMap);
        BuildRuleParams paramsForCompileGenCode = buildRuleParams.withAppendedFlavor(COMPILE_NATIVE_LIB_MERGE_MAP_GENERATED_CODE_FLAVOR).copyReplacingDeclaredAndExtraDeps(Suppliers.ofInstance(ImmutableSortedSet.of(generateCodeForMergedLibraryMap)), Suppliers.ofInstance(ImmutableSortedSet.of()));
        DefaultJavaLibrary compileMergedNativeLibMapGenCode = new DefaultJavaLibrary(paramsForCompileGenCode, pathResolver, ruleFinder, ImmutableSet.of(generateCodeForMergedLibraryMap.getSourcePathToOutput()), /* resources */
        ImmutableSet.of(), javacOptions.getGeneratedSourceFolderName(), /* proguardConfig */
        Optional.empty(), /* postprocessClassesCommands */
        ImmutableList.of(), /* exportedDeps */
        ImmutableSortedSet.of(), /* providedDeps */
        ImmutableSortedSet.of(), JavaLibraryRules.getAbiInputs(ruleResolver, paramsForCompileGenCode.getDeps()), /* trackClassUsage */
        false, /* additionalClasspathEntries */
        ImmutableSet.of(), new JavacToJarStepFactory(// to 6 in their .buckconfig.
        javacOptions.withSourceLevel("7").withTargetLevel("7"), JavacOptionsAmender.IDENTITY), /* resourcesRoot */
        Optional.empty(), /* manifest file */
        Optional.empty(), /* mavenCoords */
        Optional.empty(), ImmutableSortedSet.of(), /* classesToRemoveFromJar */
        ImmutableSet.of());
        ruleResolver.addToIndex(compileMergedNativeLibMapGenCode);
        additionalJavaLibrariesBuilder.add(compileMergedNativeLibMapGenCode);
        enhancedDeps.add(compileMergedNativeLibMapGenCode);
    }
    ImmutableSortedSet<BuildRule> resourceRules = getTargetsAsRules(resourceDetails.getResourcesWithNonEmptyResDir());
    ImmutableCollection<BuildRule> rulesWithResourceDirectories = ruleFinder.filterBuildRuleInputs(resourceDetails.getResourceDirectories());
    FilteredResourcesProvider filteredResourcesProvider;
    boolean needsResourceFiltering = resourceFilter.isEnabled() || resourceCompressionMode.isStoreStringsAsAssets() || !locales.isEmpty();
    if (needsResourceFiltering) {
        BuildRuleParams paramsForResourcesFilter = buildRuleParams.withAppendedFlavor(RESOURCES_FILTER_FLAVOR).copyReplacingDeclaredAndExtraDeps(Suppliers.ofInstance(ImmutableSortedSet.<BuildRule>naturalOrder().addAll(resourceRules).addAll(rulesWithResourceDirectories).build()), Suppliers.ofInstance(ImmutableSortedSet.of()));
        ResourcesFilter resourcesFilter = new ResourcesFilter(paramsForResourcesFilter, resourceDetails.getResourceDirectories(), ImmutableSet.copyOf(resourceDetails.getWhitelistedStringDirectories()), locales, resourceCompressionMode, resourceFilter);
        ruleResolver.addToIndex(resourcesFilter);
        filteredResourcesProvider = resourcesFilter;
        enhancedDeps.add(resourcesFilter);
        resourceRules = ImmutableSortedSet.of(resourcesFilter);
    } else {
        filteredResourcesProvider = new IdentityResourcesProvider(resourceDetails.getResourceDirectories().stream().map(pathResolver::getRelativePath).collect(MoreCollectors.toImmutableList()));
    }
    // Create the AaptPackageResourcesBuildable.
    BuildRuleParams paramsForAaptPackageResources = buildRuleParams.withAppendedFlavor(AAPT_PACKAGE_FLAVOR).copyReplacingDeclaredAndExtraDeps(Suppliers.ofInstance(ImmutableSortedSet.of()), Suppliers.ofInstance(ImmutableSortedSet.of()));
    AaptPackageResources aaptPackageResources = new AaptPackageResources(paramsForAaptPackageResources, ruleFinder, ruleResolver, manifest, filteredResourcesProvider, getTargetsAsResourceDeps(resourceDetails.getResourcesWithNonEmptyResDir()), getTargetsAsRules(resourceDetails.getResourcesWithEmptyResButNonEmptyAssetsDir()), packageableCollection.getAssetsDirectories(), resourceUnionPackage, shouldBuildStringSourceMap, skipCrunchPngs, includesVectorDrawables, bannedDuplicateResourceTypes, manifestEntries);
    ruleResolver.addToIndex(aaptPackageResources);
    enhancedDeps.add(aaptPackageResources);
    Optional<PackageStringAssets> packageStringAssets = Optional.empty();
    if (resourceCompressionMode.isStoreStringsAsAssets()) {
        BuildRuleParams paramsForPackageStringAssets = buildRuleParams.withAppendedFlavor(PACKAGE_STRING_ASSETS_FLAVOR).copyReplacingDeclaredAndExtraDeps(Suppliers.ofInstance(ImmutableSortedSet.<BuildRule>naturalOrder().add(aaptPackageResources).addAll(resourceRules).addAll(rulesWithResourceDirectories).addAll(Iterables.filter(ImmutableList.of(filteredResourcesProvider), BuildRule.class)).build()), Suppliers.ofInstance(ImmutableSortedSet.of()));
        packageStringAssets = Optional.of(new PackageStringAssets(paramsForPackageStringAssets, locales, filteredResourcesProvider, aaptPackageResources));
        ruleResolver.addToIndex(packageStringAssets.get());
        enhancedDeps.add(packageStringAssets.get());
    }
    // already been added to the APK under test.
    if (packageType != PackageType.INSTRUMENTED) {
        ImmutableSortedSet<JavaLibrary> buildConfigDepsRules = addBuildConfigDeps(buildRuleParams, packageType, exopackageModes, buildConfigValues, buildConfigValuesFile, ruleResolver, javacOptions, packageableCollection);
        enhancedDeps.addAll(buildConfigDepsRules);
        additionalJavaLibrariesBuilder.addAll(buildConfigDepsRules);
    }
    ImmutableList<BuildRule> additionalJavaLibraries = additionalJavaLibrariesBuilder.build();
    ImmutableMultimap<APKModule, DexProducedFromJavaLibrary> preDexedLibraries = ImmutableMultimap.of();
    if (shouldPreDex) {
        preDexedLibraries = createPreDexRulesForLibraries(// TODO(dreiss): Put R.java here.
        additionalJavaLibraries, packageableCollection);
    }
    // Create rule to trim uber R.java sources.
    Collection<DexProducedFromJavaLibrary> preDexedLibrariesForResourceIdFiltering = trimResourceIds ? preDexedLibraries.values() : ImmutableList.of();
    BuildRuleParams paramsForTrimUberRDotJava = buildRuleParams.withAppendedFlavor(TRIM_UBER_R_DOT_JAVA_FLAVOR).copyReplacingDeclaredAndExtraDeps(Suppliers.ofInstance(ImmutableSortedSet.<BuildRule>naturalOrder().add(aaptPackageResources).addAll(preDexedLibrariesForResourceIdFiltering).build()), Suppliers.ofInstance(ImmutableSortedSet.of()));
    TrimUberRDotJava trimUberRDotJava = new TrimUberRDotJava(paramsForTrimUberRDotJava, aaptPackageResources, preDexedLibrariesForResourceIdFiltering, keepResourcePattern);
    ruleResolver.addToIndex(trimUberRDotJava);
    // Create rule to compile uber R.java sources.
    BuildRuleParams paramsForCompileUberRDotJava = buildRuleParams.withAppendedFlavor(COMPILE_UBER_R_DOT_JAVA_FLAVOR).copyReplacingDeclaredAndExtraDeps(Suppliers.ofInstance(ImmutableSortedSet.of(trimUberRDotJava)), Suppliers.ofInstance(ImmutableSortedSet.of()));
    JavaLibrary compileUberRDotJava = new DefaultJavaLibrary(paramsForCompileUberRDotJava, pathResolver, ruleFinder, ImmutableSet.of(trimUberRDotJava.getSourcePathToOutput()), /* resources */
    ImmutableSet.of(), javacOptions.getGeneratedSourceFolderName(), /* proguardConfig */
    Optional.empty(), /* postprocessClassesCommands */
    ImmutableList.of(), /* exportedDeps */
    ImmutableSortedSet.of(), /* providedDeps */
    ImmutableSortedSet.of(), // we can just use its output as the ABI.
    JavaLibraryRules.getAbiInputs(ruleResolver, paramsForCompileUberRDotJava.getDeps()), /* trackClassUsage */
    false, /* additionalClasspathEntries */
    ImmutableSet.of(), new JavacToJarStepFactory(javacOptions.withSourceLevel("7").withTargetLevel("7"), JavacOptionsAmender.IDENTITY), /* resourcesRoot */
    Optional.empty(), /* manifest file */
    Optional.empty(), /* mavenCoords */
    Optional.empty(), ImmutableSortedSet.of(), /* classesToRemoveFromJar */
    ImmutableSet.of());
    ruleResolver.addToIndex(compileUberRDotJava);
    // Create rule to dex uber R.java sources.
    BuildRuleParams paramsForDexUberRDotJava = buildRuleParams.withAppendedFlavor(DEX_UBER_R_DOT_JAVA_FLAVOR).copyReplacingDeclaredAndExtraDeps(Suppliers.ofInstance(ImmutableSortedSet.of(compileUberRDotJava)), Suppliers.ofInstance(ImmutableSortedSet.of()));
    DexProducedFromJavaLibrary dexUberRDotJava = new DexProducedFromJavaLibrary(paramsForDexUberRDotJava, compileUberRDotJava);
    ruleResolver.addToIndex(dexUberRDotJava);
    Optional<PreDexMerge> preDexMerge = Optional.empty();
    if (shouldPreDex) {
        preDexMerge = Optional.of(createPreDexMergeRule(preDexedLibraries, dexUberRDotJava));
        enhancedDeps.add(preDexMerge.get());
    } else {
        enhancedDeps.addAll(getTargetsAsRules(packageableCollection.getJavaLibrariesToDex()));
        // If not pre-dexing, AndroidBinary needs to ProGuard and/or dex the compiled R.java.
        enhancedDeps.add(compileUberRDotJava);
    }
    // Add dependencies on all the build rules generating third-party JARs.  This is mainly to
    // correctly capture deps when a prebuilt_jar forwards the output from another build rule.
    enhancedDeps.addAll(ruleFinder.filterBuildRuleInputs(packageableCollection.getPathsToThirdPartyJars()));
    Optional<ComputeExopackageDepsAbi> computeExopackageDepsAbi = Optional.empty();
    if (!exopackageModes.isEmpty()) {
        BuildRuleParams paramsForComputeExopackageAbi = buildRuleParams.withAppendedFlavor(CALCULATE_ABI_FLAVOR).copyReplacingDeclaredAndExtraDeps(Suppliers.ofInstance(enhancedDeps.build()), Suppliers.ofInstance(ImmutableSortedSet.of()));
        computeExopackageDepsAbi = Optional.of(new ComputeExopackageDepsAbi(paramsForComputeExopackageAbi, exopackageModes, packageableCollection, copyNativeLibraries, preDexMerge));
        ruleResolver.addToIndex(computeExopackageDepsAbi.get());
        enhancedDeps.add(computeExopackageDepsAbi.get());
    }
    return AndroidGraphEnhancementResult.builder().setPackageableCollection(packageableCollection).setAaptPackageResources(aaptPackageResources).setCompiledUberRDotJava(compileUberRDotJava).setCopyNativeLibraries(copyNativeLibraries).setPackageStringAssets(packageStringAssets).setPreDexMerge(preDexMerge).setComputeExopackageDepsAbi(computeExopackageDepsAbi).setClasspathEntriesToDex(ImmutableSet.<SourcePath>builder().addAll(packageableCollection.getClasspathEntriesToDex()).addAll(additionalJavaLibraries.stream().map(BuildRule::getSourcePathToOutput).collect(MoreCollectors.toImmutableList())).build()).setFinalDeps(enhancedDeps.build()).setAPKModuleGraph(apkModuleGraph).build();
}

Example 5 with ImmutableSortedSet

use of com.google.common.collect.ImmutableSortedSet in project buck by facebook.

the class MultiarchFileInfos method generateThinFlavors.

/**
   * Expand flavors representing a fat binary into its thin binary equivalents.
   *
   * Useful when dealing with functions unaware of fat binaries.
   *
   * This does not actually check that the particular flavor set is valid.
   */
public static ImmutableList<ImmutableSortedSet<Flavor>> generateThinFlavors(Set<Flavor> platformFlavors, SortedSet<Flavor> flavors) {
    Set<Flavor> platformFreeFlavors = Sets.difference(flavors, platformFlavors);
    ImmutableList.Builder<ImmutableSortedSet<Flavor>> thinTargetsBuilder = ImmutableList.builder();
    for (Flavor flavor : flavors) {
        if (platformFlavors.contains(flavor)) {
            thinTargetsBuilder.add(ImmutableSortedSet.<Flavor>naturalOrder().addAll(platformFreeFlavors).add(flavor).build());
        }
    }
    return thinTargetsBuilder.build();
}