Examples of com.sun.tools.javac.main.JavaCompiler

com.sun.tools.javac.main.JavaCompiler
This class could be the main entry point for GJC when GJC is used as a component in a larger software system. It provides operations to construct a new compiler, and to run a new compiler on a set of source files.
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.


            Keywords keywords = Keywords.instance(context);
            Assert.checkNonNull(keywords);
            next.put(Keywords.keywordsKey, keywords);


            JavaCompiler oldCompiler = JavaCompiler.instance(context);
            JavaCompiler nextCompiler = JavaCompiler.instance(next);
            nextCompiler.initRound(oldCompiler);


            filer.newRound(next);
            messager.newRound(next);
            elementUtils.setContext(next);
            typeUtils.setContext(next);

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        Set<JavaFileObject> newSourceFiles =
                new LinkedHashSet<JavaFileObject>(filer.getGeneratedSourceFileObjects());
        roots = cleanTrees(round.roots);


        JavaCompiler compiler = round.finalCompiler(errorStatus);


        if (newSourceFiles.size() > 0)
            roots = roots.appendList(compiler.parseFiles(newSourceFiles));


        errorStatus = errorStatus || (compiler.errorCount() > 0);


        // Free resources
        this.close();


        if (taskListener != null)
            taskListener.finished(new TaskEvent(TaskEvent.Kind.ANNOTATION_PROCESSING));


        if (errorStatus) {
            if (compiler.errorCount() == 0)
                compiler.log.nerrors++;
            return compiler;
        }


        if (procOnly && !foundTypeProcessors) {
            compiler.todo.clear();
        } else {
            if (procOnly && foundTypeProcessors)
                compiler.shouldStopPolicy = CompileState.FLOW;


            compiler.enterTrees(roots);
        }


        return compiler;
    }

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        Main compilerMain = new Main("javac", new PrintWriter(System.err, true));
        compilerMain.setOptions(Options.instance(context));
        compilerMain.filenames = new ListBuffer<File>();
        compilerMain.processArgs(new String[] { "-d", "." });


        JavaCompiler compiler = JavaCompiler.instance(context);
        compiler.compile(List.of(f));
        try {
            compiler.compile(List.of(f));
            throw new Error("Error: AssertionError not thrown after second call of compile");
        } catch (AssertionError e) {
            System.err.println("Exception from compiler (expected): " + e);
        }
    }

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                                     "-XprintRounds",
                                     "-processorpath", testClasses,
                                     "-processor", self,
                                     "-d", "."});


        JavaCompiler compiler = JavaCompiler.instance(context);
        compiler.initProcessAnnotations(null);
        JavaCompiler compiler2 = compiler.processAnnotations(compiler.enterTrees(compiler.parseFiles(List.of(f))));
        try {
            compiler2.compile(List.of(f));
            throw new Error("Error: AssertionError not thrown after second call of compile");
        } catch (AssertionError e) {
            System.err.println("Exception from compiler (expected): " + e);
        }
    }

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        Main compilerMain = new Main("javac", new PrintWriter(System.err, true));
        compilerMain.setOptions(Options.instance(context));
        compilerMain.filenames = new ListBuffer<File>();
        compilerMain.processArgs(args);


        JavaCompiler c = JavaCompiler.instance(context);


        c.compile(List.of(f));


        if (c.errorCount() != 0)
            throw new AssertionError("compilation failed");


        long msec = c.elapsed_msec;
        if (msec < 0 || msec > 5 * 60 * 1000) // allow test 5 mins to execute, should be more than enough!
            throw new AssertionError("elapsed time is suspect: " + msec);

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            context.put(compilerKey, new Context.Factory<JavaCompiler>() {
                public JavaCompiler make(Context c) {
                    Log log = Log.instance(c);
                    Options options = Options.instance(c);
                    log.setDiagnosticFormatter(new ArgTypeDiagnosticFormatter(options));
                    return new JavaCompiler(c);
                }
            });
        }

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    public static void main(String... args) {
        increaseMajor("T1.class", 1);
        increaseMajor("T2.class", 2);
        javax.tools.JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
        JavacTaskImpl task = (JavacTaskImpl)tool.getTask(null, null, null, null, null, null);
        JavaCompiler compiler = JavaCompiler.instance(task.getContext());
        try {
            compiler.resolveIdent("T1").complete();
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException("Failed: unexpected exception while reading class T1");
        }
        try {
            compiler.resolveIdent("T2").complete();
        } catch (BadClassFile e) {
            System.err.println("Passed: expected completion failure " + e.getClass().getName());
            return;
        } catch (Exception e) {
            e.printStackTrace();

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public class T6435291 {
    public static void main(String... args) {
        javax.tools.JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
        JavacTaskImpl task = (JavacTaskImpl)tool.getTask(null, null, null, null, null, null);
        JavaCompiler compiler = JavaCompiler.instance(task.getContext());
        try {
            compiler.resolveIdent("T").complete();
        } catch (BadClassFile e) {
            System.err.println("Passed: expected completion failure " + e.getClass().getName());
            return;
        } catch (Exception e) {
            throw new RuntimeException("Failed: unexpected exception");

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    }


    public static void main(String[] args) throws IOException {
        javax.tools.JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
        JavacTaskImpl task = (JavacTaskImpl)tool.getTask(null, null, null, null, null, null);
        JavaCompiler compiler = JavaCompiler.instance(task.getContext());
        System.out.println(compiler.resolveIdent(getDeprecatedClass().getCanonicalName()));
    }

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public class T6400303 {
    public static void main(String... args) {
        javax.tools.JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
        JavacTaskImpl task = (JavacTaskImpl)tool.getTask(null, null, null, null, null, null);
        JavaCompiler compiler = JavaCompiler.instance(task.getContext());
        try {
            compiler.resolveIdent("Test$1").complete();
        } catch (CompletionFailure ex) {
            System.err.println("Got expected completion failure: " + ex.getLocalizedMessage());
            return;
        }
        throw new AssertionError("No error reported");

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