Example usage for com.google.common.io CharStreams nullWriter

Introduction

In this page you can find the example usage for com.google.common.io CharStreams nullWriter.

Prototype

public static Writer nullWriter() 

Source Link

Document

Returns a Writer that simply discards written chars.

Usage

From source file:eu.itesla_project.iidm.import_.JavaScriptPostProcessor.java

@Override
public void process(Network network, ComputationManager computationManager) throws Exception {
    Path js = PlatformConfig.CONFIG_DIR.resolve("import-post-processor.js");
    if (Files.exists(js)) {
        LOGGER.debug("Execute JS post processor {}", js);
        try (Reader reader = Files.newBufferedReader(js)) {
            Networks.runScript(network, reader, printToStdOut ? null : CharStreams.nullWriter());
        }/*w  w w .java2s  .  c  o m*/
    }
}

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From source file:com.google.errorprone.refaster.CodeTransformerTestHelper.java

public JavaFileObject transform(JavaFileObject original) {
    JavaCompiler compiler = JavacTool.create();
    DiagnosticCollector<JavaFileObject> diagnosticsCollector = new DiagnosticCollector<JavaFileObject>();
    StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnosticsCollector, Locale.ENGLISH,
            UTF_8);//w w  w. j ava 2  s  .  c  o m
    JavacTaskImpl task = (JavacTaskImpl) compiler.getTask(CharStreams.nullWriter(), fileManager,
            diagnosticsCollector, ImmutableList.<String>of(), null, ImmutableList.of(original));

    try {
        SourceFile sourceFile = SourceFile.create(original);
        Iterable<? extends CompilationUnitTree> trees = task.parse();
        task.analyze();
        JCCompilationUnit tree = Iterables.getOnlyElement(Iterables.filter(trees, JCCompilationUnit.class));
        DescriptionBasedDiff diff = DescriptionBasedDiff.create(tree);
        transformer().apply(new TreePath(tree), task.getContext(), diff);
        diff.applyDifferences(sourceFile);

        return JavaFileObjects.forSourceString(
                Iterables.getOnlyElement(Iterables.filter(tree.getTypeDecls(), JCClassDecl.class)).sym
                        .getQualifiedName().toString(),
                sourceFile.getSourceText());
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

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From source file:com.google.gerrit.server.project.Index.java

@Override
public Response.Accepted apply(ProjectResource resource, ProjectInput input) {
    Project.NameKey project = resource.getNameKey();
    Task mpt = new MultiProgressMonitor(ByteStreams.nullOutputStream(), "Reindexing project").beginSubTask("",
            MultiProgressMonitor.UNKNOWN);
    PrintWriter pw = new PrintWriter(CharStreams.nullWriter());
    executor.submit(allChangesIndexer.reindexProject(indexer, project, mpt, mpt, pw));
    return Response.accepted("Project " + project + " submitted for reindexing");
}

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From source file:com.google.errorprone.analysis.RecompilingTopLevelAnalysis.java

private static boolean compiles(Fix fix, JCCompilationUnit compilationUnit, Context context) {
    final NavigableSet<Replacement> replacements = new TreeSet<>(ByStartPosition.INSTANCE);
    replacements.addAll(fix.getReplacements(compilationUnit.endPositions));
    JavaFileObject modifiedFile = compilationUnit.getSourceFile();

    if (replacements.isEmpty()) {
        return true;
    }/*w ww  .ja va  2  s . c om*/

    JavacTaskImpl javacTask = (JavacTaskImpl) context.get(JavacTask.class);
    if (javacTask == null) {
        throw new IllegalArgumentException("No JavacTask in context.");
    }
    List<JavaFileObject> fileObjects = new ArrayList<>(fileObjectsForTask(javacTask));
    for (int i = 0; i < fileObjects.size(); i++) {
        final JavaFileObject oldFile = fileObjects.get(i);
        if (modifiedFile.toUri().equals(oldFile.toUri())) {
            fileObjects.set(i, new SimpleJavaFileObject(modifiedFile.toUri(), Kind.SOURCE) {
                @Override
                public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
                    StringBuilder builder = new StringBuilder(oldFile.getCharContent(ignoreEncodingErrors));
                    for (Replacement replacement : replacements.descendingSet()) {
                        builder.replace(replacement.startPosition(), replacement.endPosition(),
                                replacement.replaceWith());
                    }
                    return builder;
                }
            });
            break;
        }
    }
    JavaCompiler compiler = JavacTool.create();
    DiagnosticCollector<JavaFileObject> diagnosticListener = new DiagnosticCollector<>();
    JavacTask newTask = (JavacTask) compiler.getTask(CharStreams.nullWriter(),
            context.get(JavaFileManager.class), diagnosticListener, asListOrNull(argsForTask(javacTask)),
            asListOrNull(classesForTask(javacTask)), fileObjects);
    try {
        newTask.analyze();
    } catch (Throwable e) {
        return false;
    }
    return countErrors(diagnosticListener) == 0;
}

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From source file:com.pressassociation.pr.filter.json.jackson.JacksonMatcherFilter.java

private void processFirstPass(Node parentNode, Object pojo, SerializerProvider provider, PropertyWriter writer,
        JsonGenerator generator) throws Exception {
    State state = this.state.get();
    Leaf leaf = Leaf.copyOf(state.propertyPath);

    // if this property _can_ contribute towards the path leading to a matching leaf then we have to check
    boolean matches = matcher.matches(leaf);
    if (matches || matcher.matchesParent(leaf)) {
        if (parentNode.isRoot()) {
            // make sure we don't actually write anything to the output, only replace if we are the root node, it will
            // be passed to other nodes as needed via recursive calls
            generator = new JsonFactory().createGenerator(CharStreams.nullWriter());
        }//from   w  w w. j av a2 s  .  c  o m

        // prepare a node for this property so child branches can add to it as needed
        state.currentNode = new Node(parentNode, writer.getName());
        writer.serializeAsField(pojo, generator, provider);

        // check the results of processing the children
        if (state.currentNode.isEmpty()) {
            // either we don't have any children or none of them are matching leaves.
            // in any case
            if (matches) {
                // it turns out we match anyway so add this node
                parentNode.addChild(state.currentNode);
            }
        } else {
            // child leafs match so we need to include this node as a parent of them
            parentNode.addChild(state.currentNode);
        }
    }
}

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From source file:com.google.errorprone.BugCheckerRefactoringTestHelper.java

private JCCompilationUnit doCompile(final JavaFileObject input, Iterable<JavaFileObject> files, Context context)
        throws IOException {
    JavacTool tool = JavacTool.create();
    DiagnosticCollector<JavaFileObject> diagnosticsCollector = new DiagnosticCollector<>();
    context.put(ErrorProneOptions.class, ErrorProneOptions.empty());
    JavacTaskImpl task = (JavacTaskImpl) tool.getTask(CharStreams.nullWriter(), fileManager,
            diagnosticsCollector, options, /*classes=*/ null, files, context);
    Iterable<? extends CompilationUnitTree> trees = task.parse();
    task.analyze();/*from   w  w  w  .  j a  v  a2 s.c o  m*/
    JCCompilationUnit tree = Iterables
            .getOnlyElement(Iterables.filter(Iterables.filter(trees, JCCompilationUnit.class),
                    compilationUnit -> compilationUnit.getSourceFile() == input));
    Iterable<Diagnostic<? extends JavaFileObject>> errorDiagnostics = Iterables
            .filter(diagnosticsCollector.getDiagnostics(), d -> d.getKind() == Diagnostic.Kind.ERROR);
    if (!Iterables.isEmpty(errorDiagnostics)) {
        fail("compilation failed unexpectedly: " + errorDiagnostics);
    }
    return tree;
}

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