Examples of com.sun.tools.javac.util.Context

com.sun.tools.javac.util.Context
phase has not been overridden instance = new Phase(context); return instance; } protected Phase(Context context) { context.put(phaseKey, this); // other intitialization follows... } } }
In the compiler, we simply use Phase.instance(context) to get the reference to the phase. But in extensions of the compiler, we must register extensions of the phases to replace the base phase, and this must be done before any reference to the phase is accessed using Phase.instance(). An extended phase might be declared thus:
```
 {@code}public class NewPhase extends Phase  protected NewPhase(Context context) { super(context); } public static void preRegister(final Context context) { context.put(phaseKey, new Context.Factory() { public Phase make() { return new NewPhase(context); } }); } } }
```
And is registered early in the extended compiler like this
```
 NewPhase.preRegister(context); 
```
This is NOT part of any supported API. If you write code that depends on this, you do so at your own risk. This code and its internal interfaces are subject to change or deletion without notice.

      Iterable<? extends JavaFileObject> compilationUnits) {
    ErrorProneOptions errorProneOptions = ErrorProneOptions.processArgs(options);
    List<String> remainingOptions = Arrays.asList(errorProneOptions.getRemainingArgs());
    CompilationTask task = javacTool.getTask(
        out, fileManager, diagnosticListener, remainingOptions, classes, compilationUnits);
    Context context = ((JavacTaskImpl) task).getContext();
    ErrorProneScanner scanner = scannerSupplier.get();
    context.put(Scanner.class, scanner);
    try {
      scanner.setDisabledChecks(errorProneOptions.getDisabledChecks());
    } catch (InvalidCommandLineOptionException e) {
      throw new RuntimeException(e);
    }

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    protected Map<String, String> options;


    @Override
    public void init(ProcessingEnvironment processingEnv) {
        super.init(processingEnv);
        final Context context = ((JavacProcessingEnvironment) processingEnv).getContext();
        symTable = Symtab.instance(context);
        trees = Trees.instance(processingEnv);
        elementUtils = JavacElements.instance(context);
        msgr = processingEnv.getMessager();
        tm = TreeMaker.instance(((JavacProcessingEnvironment) processingEnv).getContext());

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    public JavacFileManager getStandardFileManager(
        DiagnosticListener<? super JavaFileObject> diagnosticListener,
        Locale locale,
        Charset charset) {
        Context context = new Context();
        context.put(Locale.class, locale);
        if (diagnosticListener != null)
            context.put(DiagnosticListener.class, diagnosticListener);
        PrintWriter pw = (charset == null)
                ? new PrintWriter(System.err, true)
                : new PrintWriter(new OutputStreamWriter(System.err, charset), true);
        context.put(Log.outKey, pw);
        return new JavacFileManager(context, true, charset);
    }

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                             JavaFileManager fileManager,
                             DiagnosticListener<? super JavaFileObject> diagnosticListener,
                             Iterable<String> options,
                             Iterable<String> classes,
                             Iterable<? extends JavaFileObject> compilationUnits) {
        Context context = new Context();
        return getTask(out, fileManager, diagnosticListener,
                options, classes, compilationUnits,
                context);
    }

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     */
    public static JavacTask instance(ProcessingEnvironment processingEnvironment) {
        if (!processingEnvironment.getClass().getName().equals(
                "com.sun.tools.javac.processing.JavacProcessingEnvironment"))
            throw new IllegalArgumentException();
        Context c = ((JavacProcessingEnvironment) processingEnvironment).getContext();
        JavacTask t = c.get(JavacTask.class);
        return (t != null) ? t : new BasicJavacTask(c, true);
    }

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        private TreeMaker m;


        ImportCleaner(JavaFileManager fm) {
            // ImportCleaner itself doesn't require a filemanager, but instantiating
            // a TreeMaker does, indirectly (via ClassReader, sigh)
            Context c = new Context();
            c.put(JavaFileManager.class, fm);
            m = TreeMaker.instance(c);
        }

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                out.println(localize("dc.main.no.files.given"));
        }


        JavacTool tool = JavacTool.create();


        JavacFileManager fm = new JavacFileManager(new Context(), false, null);
        fm.setSymbolFileEnabled(false);
        fm.setLocation(StandardLocation.PLATFORM_CLASS_PATH, javacBootClassPath);
        fm.setLocation(StandardLocation.CLASS_PATH, javacClassPath);
        fm.setLocation(StandardLocation.SOURCE_PATH, javacSourcePath);


        JavacTask task = tool.getTask(out, fm, null, javacOpts, null,
                fm.getJavaFileObjectsFromFiles(javacFiles));
        Iterable<? extends CompilationUnitTree> units = task.parse();
        ((JavacTaskImpl) task).enter();


        env.init(task);
        checker = new Checker(env);


        DeclScanner ds = new DeclScanner() {
            @Override
            void visitDecl(Tree tree, Name name) {
                TreePath p = getCurrentPath();
                DocCommentTree dc = env.trees.getDocCommentTree(p);


                checker.scan(dc, p);
            }
        };


        ds.scan(units, null);


        reportStats(out);


        Context ctx = ((JavacTaskImpl) task).getContext();
        JavaCompiler c = JavaCompiler.instance(ctx);
        c.printCount("error", c.errorCount());
        c.printCount("warn", c.warningCount());
    }

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    @Override
    public void run() {
        // Get the post-annotation-processing context (javac sometimes
        // reassigns it during annotation processing.)
        Context finalContext = JOUST.environ.getContext();
        StaticCompilerUtils.uninit();
        StaticCompilerUtils.initWithContext(finalContext);


        List<JCCompilationUnit> compilationUnitList = List.nil();
        for (JCCompilationUnit unit : JOUST.conventionalTrees) {

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        trees = Trees.instance(env);


        // We typecast the processing environment to the one used by javac. This dirty trick allows
        // us to alter the AST - something not generally possible in annotation processors.
        Context con = ((JavacProcessingEnvironment) env).getContext();


        initWithContext(con);
    }

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    protected Kind eventKind;
    protected Messages messages;


    public void init(JavacTask task, String... args) {
        BasicJavacTask impl = (BasicJavacTask)task;
        Context context = impl.getContext();
        log = Log.instance(context);
        trees = Trees.instance(task);
        messages = new Messages();
        task.addTaskListener(new PostAnalyzeTaskListener());
    }

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