com.google.common.collect.ImmutableMap#isEmpty ( )源码实例Demo

@Override
public Map<String, Object> apply(Map<String, Object> unmodifiedCaps) {
  ImmutableMap<String, Object> caps = unmodifiedCaps.entrySet().parallelStream()
      .filter(entry ->
                  ("browserName".equals(entry.getKey()) && "internet explorer".equals(entry.getValue())) ||
                  "browserAttachTimeout".equals(entry.getKey()) ||
                  "enableElementCacheCleanup".equals(entry.getKey()) ||
                  "enablePersistentHover".equals(entry.getKey()) ||
                  "extractPath".equals(entry.getKey()) ||
                  "host".equals(entry.getKey()) ||
                  "ignoreZoomSetting".equals(entry.getKey()) ||
                  "initialBrowserZoom".equals(entry.getKey()) ||
                  "logFile".equals(entry.getKey()) ||
                  "logLevel".equals(entry.getKey()) ||
                  "requireWindowFocus".equals(entry.getKey()) ||
                  "se:ieOptions".equals(entry.getKey()) ||
                  "silent".equals(entry.getKey()) ||
                  entry.getKey().startsWith("ie."))
      .distinct()
      .filter(entry -> Objects.nonNull(entry.getValue()))
      .collect(ImmutableMap.toImmutableMap(Map.Entry::getKey, Map.Entry::getValue));

  return caps.isEmpty() ? null : caps;
}
 

private static <V> ImmutableMap<Artifact, V> transformMap(
    ImmutableMap<Artifact, V> data,
    Map<OwnerlessArtifactWrapper, Artifact> newArtifactMap,
    BiFunction<Artifact, V, V> transform) {
  if (data.isEmpty()) {
    return data;
  }

  ImmutableMap.Builder<Artifact, V> result = ImmutableMap.builderWithExpectedSize(data.size());
  for (Map.Entry<Artifact, V> entry : data.entrySet()) {
    Artifact artifact = entry.getKey();
    Artifact newArtifact =
        Preconditions.checkNotNull(
            newArtifactMap.get(new OwnerlessArtifactWrapper(artifact)),
            "Output artifact %s from one shared action not present in another's outputs (%s)",
            artifact,
            newArtifactMap);
    result.put(newArtifact, transform.apply(newArtifact, entry.getValue()));
  }
  return result.build();
}
 

private static ImmutableList<Scope> getScopes(ThreadObjectMap objectMap, Debug.Frame frame) {
  Map<String, Object> moduleVars =
      frame.getFunction() instanceof StarlarkFunction
          ? ((StarlarkFunction) frame.getFunction()).getModule().getGlobals()
          : ImmutableMap.of();

  ImmutableMap<String, Object> localVars = frame.getLocals();
  if (localVars.isEmpty()) {
    return ImmutableList.of(getScope(objectMap, "global", moduleVars));
  }

  Map<String, Object> globalVars = new LinkedHashMap<>(moduleVars);
  // remove shadowed bindings
  localVars.keySet().forEach(globalVars::remove);

  return ImmutableList.of(
      getScope(objectMap, "local", localVars), getScope(objectMap, "global", globalVars));
}
 

@Override
public FileTree transform(FileTreeKey key, ComputationEnvironment env) {

  DirectoryList currentDir = env.getDep(ImmutableDirectoryListKey.of(key.getPath()));
  ImmutableMap<FileTreeKey, FileTree> children = env.getDeps(FileTreeKey.IDENTIFIER);

  ImmutableMap<Path, FileTree> deps;
  if (children.isEmpty()) {
    deps = ImmutableMap.of();
  } else {
    // Convert Map<FileTreeKey, FileTree> to Map<Path, FileTree>
    // Not using streams etc. for performance
    // May be instead have FileTree object to have Map<FileTreeKey, FileTree> instead of
    // Map<Path, FileTree>? The interface is less cleaner then, but we can reuse collections

    deps = MoreMaps.transformKeys(children, k -> k.getPath());
  }

  return ImmutableFileTree.of(key.getPath(), currentDir, deps);
}
 

private static BuildOptions unalias(
    BuildOptions options, ImmutableMap<Label, Label> aliasToActual) {
  if (aliasToActual.isEmpty()) {
    return options;
  }
  Collection<Label> aliases = aliasToActual.keySet();
  Collection<Label> actuals = aliasToActual.values();
  BuildOptions.Builder toReturn = options.toBuilder();
  for (Map.Entry<Label, Object> entry : options.getStarlarkOptions().entrySet()) {
    Label setting = entry.getKey();
    if (actuals.contains(setting)) {
      // if entry is keyed by an actual (e.g. <entry2> in javadoc), don't care about its value
      // it's stale
      continue;
    } else if (aliases.contains(setting)) {
      // if an entry is keyed by an alias (e.g. <entry1> in javadoc), newly key (overwrite) its
      // actual to its alias' value and remove the alias-keyed entry
      toReturn.addStarlarkOption(
          aliasToActual.get(setting), options.getStarlarkOptions().get(setting));
      toReturn.removeStarlarkOption(setting);
    } else {
      // else - just copy over
      toReturn.addStarlarkOption(entry.getKey(), entry.getValue());
    }
  }
  return toReturn.build();
}
 

/**
 * Constructs a {@link CollectPackagesUnderDirectoryValue} for a directory without a BUILD file or
 * that has a BUILD file that successfully loads as a package.
 */
public static CollectPackagesUnderDirectoryValue ofNoError(
    boolean isDirectoryPackage,
    ImmutableMap<RootedPath, Boolean> subdirectoryTransitivelyContainsPackagesOrErrors) {
  if (!isDirectoryPackage && subdirectoryTransitivelyContainsPackagesOrErrors.isEmpty()) {
    return NoErrorCollectPackagesUnderDirectoryValue.EMPTY;
  }
  return new NoErrorCollectPackagesUnderDirectoryValue(
      isDirectoryPackage, subdirectoryTransitivelyContainsPackagesOrErrors);
}
 

@Override
public Map<String, Object> apply(Map<String, Object> unmodifiedCaps) {
  ImmutableMap<String, Object> caps = unmodifiedCaps.entrySet().parallelStream()
      .filter(entry -> ("browserName".equals(entry.getKey()) && "edge".equals(entry.getValue())))
      .distinct()
      .filter(entry -> Objects.nonNull(entry.getValue()))
      .collect(ImmutableMap.toImmutableMap(Map.Entry::getKey, Map.Entry::getValue));

  return caps.isEmpty() ? null : caps;
}
 

@Override
public IModel retexture(ImmutableMap<String, String> textures) {
    if (textures.isEmpty())
        return this;

    ImmutableMap.Builder<Selector, IModel> builder = ImmutableMap.builder();
    for (Map.Entry<Selector, IModel> partModel : partModels.entrySet()) {
        builder.put(partModel.getKey(), partModel.getValue().retexture(textures));
    }

    return new MultipartModel(location, multipart, builder.build());
}
 

public static ViewRowFieldNameAndJsonValues ofMap(@NonNull final ImmutableMap<String, Object> map)
{
	if (map.isEmpty())
	{
		return EMPTY;
	}

	return new ViewRowFieldNameAndJsonValues(map);
}
 

@Override
public Map<String, Object> apply(Map<String, Object> unmodifiedCaps) {
  ImmutableMap<String, Object> caps = unmodifiedCaps.entrySet().parallelStream()
      .filter(entry ->
                  ("browserName".equals(entry.getKey()) && "opera".equals(entry.getValue())) ||
                  ("browserName".equals(entry.getKey()) && "operablink".equals(entry.getValue())) ||
                  "operaOptions".equals(entry.getKey()))
      .distinct()
      .filter(entry -> Objects.nonNull(entry.getValue()))
      .collect(ImmutableMap.toImmutableMap(Map.Entry::getKey, Map.Entry::getValue));

  return caps.isEmpty() ? null : caps;
}
 

public static <T> Arborescence<T> of(ImmutableMap<T, T> parents) {
    if (parents != null && !parents.isEmpty()) {
        HashSet<T> allParents = Sets.newHashSet(parents.values());
        allParents.removeAll(parents.keySet());
        if (allParents.size() == 1) {
            return new Arborescence<>(parents, allParents.iterator().next());
        }
    }
    return new Arborescence<>(parents, null);
}
 

private static ImmutableList<Advice> createReweavableAdvisors(
        List<InstrumentationConfig> reweavableConfigs,
        @Nullable Instrumentation instrumentation, File tmpDir, boolean cleanTmpDir)
        throws Exception {
    ImmutableMap<Advice, LazyDefinedClass> advisors =
            AdviceGenerator.createAdvisors(reweavableConfigs, null, false, true);
    if (instrumentation == null) {
        // instrumentation is null when debugging with LocalContainer
        ClassLoader isolatedWeavingClassLoader =
                Thread.currentThread().getContextClassLoader();
        checkNotNull(isolatedWeavingClassLoader);
        ClassLoaders.defineClasses(advisors.values(), isolatedWeavingClassLoader);
    } else {
        if (cleanTmpDir) {
            ClassLoaders.createDirectoryOrCleanPreviousContentsWithPrefix(tmpDir,
                    "config-pointcuts");
        }
        if (!advisors.isEmpty()) {
            String suffix = "";
            int count = jarFileCounter.incrementAndGet();
            if (count > 1) {
                suffix = "-" + count;
            }
            File jarFile = new File(tmpDir, "config-pointcuts" + suffix + ".jar");
            ClassLoaders.defineClassesInBootstrapClassLoader(advisors.values(), instrumentation,
                    jarFile);
        }
    }
    return advisors.keySet().asList();
}
 

public LtoCompilationContext build() {
  ImmutableMap<Artifact, BitcodeInfo> map = ltoBitcodeFiles.build();
  if (map.isEmpty()) {
    return LtoCompilationContext.EMPTY;
  }
  return new LtoCompilationContext(map);
}
 

/** Check that the timestamp of each BackupGroupRoot is in the past. */
private void checkBackupGroupRootTimestamps(
    DateTime transactionTime, Set<Entry<Key<BackupGroupRoot>, BackupGroupRoot>> bgrEntries) {
  ImmutableMap.Builder<Key<BackupGroupRoot>, DateTime> builder = new ImmutableMap.Builder<>();
  for (Entry<Key<BackupGroupRoot>, BackupGroupRoot> entry : bgrEntries) {
    DateTime updateTime = entry.getValue().getUpdateAutoTimestamp().getTimestamp();
    if (!updateTime.isBefore(transactionTime)) {
      builder.put(entry.getKey(), updateTime);
    }
  }
  ImmutableMap<Key<BackupGroupRoot>, DateTime> problematicRoots = builder.build();
  if (!problematicRoots.isEmpty()) {
    throw new TimestampInversionException(transactionTime, problematicRoots);
  }
}
 

private void submitLimiterStopMetadataEvents (){
  ImmutableMap<String, String> metaData = this.getLimiterStopMetadata();
  if (!metaData.isEmpty()) {
    this.eventSubmitter.submit(LIMITER_STOP_EVENT_NAME, metaData);
  }
}
 

public static CxxLink createCxxLinkableBuildRule(
    CellPathResolver cellPathResolver,
    CxxBuckConfig cxxBuckConfig,
    CxxPlatform cxxPlatform,
    ProjectFilesystem projectFilesystem,
    BuildRuleResolver ruleResolver,
    BuildTarget target,
    Path output,
    ImmutableMap<String, Path> extraOutputs,
    ImmutableList<Arg> args,
    LinkableDepType runtimeDepType,
    CxxLinkOptions linkOptions,
    Optional<LinkOutputPostprocessor> postprocessor) {

  Linker linker = cxxPlatform.getLd().resolve(ruleResolver, target.getTargetConfiguration());

  // Build up the arguments to pass to the linker.
  ImmutableList.Builder<Arg> argsBuilder = ImmutableList.builder();

  // Add flags to generate linker map if supported.
  if (linker instanceof HasLinkerMap && LinkerMapMode.isLinkerMapEnabledForBuildTarget(target)) {
    argsBuilder.addAll(((HasLinkerMap) linker).linkerMap(output));
  }

  // Add lto object path if thin LTO is on.
  if (linker instanceof HasLTO && linkOptions.getThinLto()) {
    argsBuilder.addAll(((HasLTO) linker).thinLTO(output));
  } else if (linker instanceof HasLTO && linkOptions.getFatLto()) {
    argsBuilder.addAll(((HasLTO) linker).fatLTO(output));
  }

  if (linker instanceof HasImportLibrary) {
    argsBuilder.addAll(((HasImportLibrary) linker).importLibrary(output));
  }

  // Pass any platform specific or extra linker flags.
  argsBuilder.addAll(
      SanitizedArg.fromArgs(
          cxxPlatform.getCompilerDebugPathSanitizer().sanitizer(Optional.empty()),
          cxxPlatform.getLdflags()));

  argsBuilder.addAll(args);

  // Add all arguments needed to link in the C/C++ platform runtime.
  argsBuilder.addAll(cxxPlatform.getRuntimeLdflags().get(runtimeDepType));

  ImmutableList<Arg> ldArgs = argsBuilder.build();
  ImmutableMap<String, Path> allExtraOutputs = extraOutputs;

  Optional<ExtraOutputsDeriver> extraOutputsDeriver = linker.getExtraOutputsDeriver();
  if (extraOutputsDeriver.isPresent()) {
    ImmutableMap<String, Path> derivedExtraOutputs =
        extraOutputsDeriver
            .get()
            .deriveExtraOutputsFromArgs(
                Arg.stringify(ldArgs, ruleResolver.getSourcePathResolver()), output);
    if (!derivedExtraOutputs.isEmpty()) {
      allExtraOutputs =
          ImmutableMap.<String, Path>builder()
              .putAll(extraOutputs)
              .putAll(derivedExtraOutputs)
              .build();
    }
  }

  return new CxxLink(
      target,
      projectFilesystem,
      ruleResolver,
      cellPathResolver,
      linker,
      output,
      allExtraOutputs,
      ldArgs,
      postprocessor,
      cxxBuckConfig.getLinkScheduleInfo(),
      cxxBuckConfig.shouldCacheLinks(),
      linkOptions.getThinLto(),
      linkOptions.getFatLto());
}
 

protected static boolean areAttachedMessagesKeysInAttachments(ImmutableList<Attachment> attachments, ImmutableMap<BlobId, SubMessage> attachedMessages) {
    return attachedMessages.isEmpty() || attachedMessages.keySet().stream()
            .anyMatch(inAttachments(attachments));
}
 

public Optional<ImmutableMap<String, String>> getSection(String sectionName) {
  ImmutableMap<String, String> values = config.get(sectionName);
  return values.isEmpty() ? Optional.empty() : Optional.of(values);
}
 

@Override
public BuildRule createBuildRule(
    BuildRuleCreationContextWithTargetGraph context,
    BuildTarget buildTarget,
    BuildRuleParams params,
    JavaBinaryDescriptionArg args) {

  ActionGraphBuilder graphBuilder = context.getActionGraphBuilder();
  ImmutableMap<String, SourcePath> nativeLibraries =
      JavaLibraryRules.getNativeLibraries(
          params.getBuildDeps(),
          getCxxPlatform(args, buildTarget.getTargetConfiguration())
              .resolve(graphBuilder, buildTarget.getTargetConfiguration()),
          context.getActionGraphBuilder());
  BuildTarget binaryBuildTarget = buildTarget;

  // If we're packaging native libraries, we'll build the binary JAR in a separate rule and
  // package it into the final fat JAR, so adjust it's params to use a flavored target.
  if (!nativeLibraries.isEmpty()) {
    binaryBuildTarget = binaryBuildTarget.withAppendedFlavors(FAT_JAR_INNER_JAR_FLAVOR);
  }

  ProjectFilesystem projectFilesystem = context.getProjectFilesystem();

  // Construct the build rule to build the binary JAR.
  ImmutableSet<JavaLibrary> transitiveClasspathDeps =
      JavaLibraryClasspathProvider.getClasspathDeps(params.getBuildDeps());
  ImmutableSet<SourcePath> transitiveClasspaths =
      JavaLibraryClasspathProvider.getClasspathsFromLibraries(transitiveClasspathDeps);
  JavaBinary javaBinary =
      new JavaBinary(
          binaryBuildTarget,
          projectFilesystem,
          params.copyAppendingExtraDeps(transitiveClasspathDeps),
          javaOptions
              .apply(buildTarget.getTargetConfiguration())
              .getJavaRuntimeLauncher(graphBuilder, buildTarget.getTargetConfiguration()),
          args.getMainClass().orElse(null),
          args.getManifestFile().orElse(null),
          args.getMergeManifests().orElse(true),
          args.getDisallowAllDuplicates().orElse(false),
          args.getMetaInfDirectory().orElse(null),
          args.getBlacklist(),
          transitiveClasspathDeps,
          transitiveClasspaths,
          javaBuckConfig.shouldCacheBinaries(),
          javaBuckConfig.getDuplicatesLogLevel());

  // If we're packaging native libraries, construct the rule to build the fat JAR, which packages
  // up the original binary JAR and any required native libraries.
  BuildRule rule;
  if (nativeLibraries.isEmpty()) {
    rule = javaBinary;
  } else {
    graphBuilder.addToIndex(javaBinary);
    SourcePath innerJar = javaBinary.getSourcePathToOutput();
    JavacFactory javacFactory = JavacFactory.getDefault(toolchainProvider);
    rule =
        new JarFattener(
            buildTarget,
            projectFilesystem,
            params.copyAppendingExtraDeps(
                Suppliers.<Iterable<BuildRule>>ofInstance(
                    Iterables.concat(
                        graphBuilder.filterBuildRuleInputs(
                            ImmutableList.<SourcePath>builder()
                                .add(innerJar)
                                .addAll(nativeLibraries.values())
                                .build()),
                        javacFactory.getBuildDeps(
                            graphBuilder, binaryBuildTarget.getTargetConfiguration())))),
            javacFactory.create(graphBuilder, null, binaryBuildTarget.getTargetConfiguration()),
            toolchainProvider
                .getByName(
                    JavacOptionsProvider.DEFAULT_NAME,
                    binaryBuildTarget.getTargetConfiguration(),
                    JavacOptionsProvider.class)
                .getJavacOptions(),
            innerJar,
            javaBinary,
            nativeLibraries,
            javaOptions
                .apply(buildTarget.getTargetConfiguration())
                .getJavaRuntimeLauncher(graphBuilder, buildTarget.getTargetConfiguration()));
  }

  return rule;
}
 

/**
 * Wrapper method for {@link #getOutputPathsByLabels} to make the return type {@link Optional}
 * so empty lists and empty maps won't be printed in the JSON output. {@link
 * #getOutputPathsByLabels} isn't Optional to make it easy to interact with while building (i.e.
 * to have access to #putOutputPathsByLabels from codegen).
 */
public Optional<ImmutableMap<OutputLabel, ImmutableSet<String>>> getOutputPaths() {
  ImmutableMap<OutputLabel, ImmutableSet<String>> result = getOutputPathsByLabels();
  return result.isEmpty() ? Optional.empty() : Optional.of(result);
}