com.sun.source.util.JavacTask Java Examples

public static void main(String[] args) throws Exception {
    PrintWriter out = new PrintWriter(System.out, true);
    JavacTool tool = JavacTool.create();
    StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null);
    File testSrc = new File(System.getProperty("test.src"));
    Iterable<? extends JavaFileObject> f =
        fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, "AnnotatedArrayOrder.java")));
    JavacTask task = tool.getTask(out, fm, null, null, null, f);
    Iterable<? extends CompilationUnitTree> trees = task.parse();
    out.flush();

    Scanner s = new Scanner();
    for (CompilationUnitTree t: trees)
        s.scan(t, null);

}
 

public static void main(String... args) throws IOException {
    String testSrc = System.getProperty("test.src", ".");
    String testClasses = System.getProperty("test.classes", ".");
    JavacTool tool = JavacTool.create();
    MyDiagListener dl = new MyDiagListener();
    StandardJavaFileManager fm = tool.getStandardFileManager(dl, null, null);
    fm.setLocation(StandardLocation.CLASS_OUTPUT, Arrays.asList(new File(testClasses)));
    Iterable<? extends JavaFileObject> files =
        fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, T6410706.class.getName()+".java")));
    JavacTask task = tool.getTask(null, fm, dl, null, null, files);
    task.parse();
    task.analyze();
    task.generate();

    // expect 2 notes:
    // Note: T6410706.java uses or overrides a deprecated API.
    // Note: Recompile with -Xlint:deprecation for details.

    if (dl.notes != 2)
        throw new AssertionError(dl.notes + " notes given");
}
 

private File compile(List<File> classpaths, List<JavaFileObject> files, boolean generate) throws IOException {
    JavaCompiler systemJavaCompiler = ToolProvider.getSystemJavaCompiler();
    StandardJavaFileManager fm = systemJavaCompiler.getStandardFileManager(null, null, null);
    if (classpaths.size() > 0)
        fm.setLocation(StandardLocation.CLASS_PATH, classpaths);
    JavacTask ct = (JavacTask) systemJavaCompiler.getTask(null, fm, diags, compileOptions, null, files);
    if (generate) {
        File destDir = new File(root, Integer.toString(counter.incrementAndGet()));
        // @@@ Assert that this directory didn't exist, or start counter at max+1
        destDir.mkdirs();
        fm.setLocation(StandardLocation.CLASS_OUTPUT, Arrays.asList(destDir));
        ct.generate();
        return destDir;
    }
    else {
        ct.analyze();
        return nullDir;
    }
}
 

public static void main(String[] args) throws Exception {
    PrintWriter out = new PrintWriter(System.out, true);
    JavacTool tool = JavacTool.create();
    StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null);
    File testSrc = new File(System.getProperty("test.src"));
    Iterable<? extends JavaFileObject> f =
        fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, "ArrayCreationTree.java")));
    JavacTask task = tool.getTask(out, fm, null, null, null, f);
    Iterable<? extends CompilationUnitTree> trees = task.parse();
    out.flush();

    Scanner s = new Scanner();
    for (CompilationUnitTree t: trees)
        s.scan(t, null);

}
 

public void exec() {
    JavaFileObject sfo = new SimpleJavaFileObject(URI.create("myfo:/Test.java"),Kind.SOURCE) {
        public CharSequence getCharContent(boolean ignoreEncodingErrors) {
            return "\tclass ErroneousWithTab";
        }
    };
    StringWriter sw = new StringWriter();
    PrintWriter out = new PrintWriter(sw);
    List<? extends JavaFileObject> files = Arrays.asList(sfo);
    task = tool.getTask(sw, fm, null, null, null, files);
    try {
        ((JavacTask)task).analyze();
    }
    catch (Throwable t) {
        throw new Error("Compiler threw an exception");
    }
    System.err.println(sw.toString());
    if (!sw.toString().contains("/Test.java"))
        throw new Error("Bad source name in diagnostic");
}
 

public void run() throws IOException {
    File srcDir = new File(System.getProperty("test.src"));
    File thisFile = new File(srcDir, getClass().getName() + ".java");

    JavaCompiler c = ToolProvider.getSystemJavaCompiler();
    try (StandardJavaFileManager fm = c.getStandardFileManager(null, null, null)) {

        List<String> opts = Arrays.asList("-proc:only", "-doe");
        Iterable<? extends JavaFileObject> files = fm.getJavaFileObjects(thisFile);
        JavacTask t = (JavacTask) c.getTask(null, fm, null, opts, null, files);
        t.setProcessors(Collections.singleton(this));
        boolean ok = t.call();
        if (!ok)
            throw new Error("compilation failed");
    }
}
 

public static void main(String[] args) throws Exception {
    File testSrc = new File(System.getProperty("test.src"));
    File thisSrc = new File(testSrc, T6963934.class.getSimpleName() + ".java");
    JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
    StandardJavaFileManager fileManager = compiler.getStandardFileManager(null, null, null);
    JavacTask task = (JavacTask) compiler.getTask(null, fileManager, null, null, null,
            fileManager.getJavaFileObjects(thisSrc));
    CompilationUnitTree tree = task.parse().iterator().next();
    int count = 0;
    for (ImportTree importTree : tree.getImports()) {
        System.out.println(importTree);
        count++;
    }
    int expected = 7;
    if (count != expected)
        throw new Exception("unexpected number of imports found: " + count + ", expected: " + expected);
}
 

@Test
public void testAddExportUndefinedModule(Path base) throws Exception {
    Path src = base.resolve("src");
    tb.writeJavaFiles(src, "package test; import undefPackage.Any; public class Test {}");
    Path classes = base.resolve("classes");
    tb.createDirectories(classes);

    List<String> log = new JavacTask(tb)
            .options("--add-exports", "undefModule/undefPackage=ALL-UNNAMED",
                     "-XDrawDiagnostics")
            .outdir(classes)
            .files(findJavaFiles(src))
            .run(Task.Expect.FAIL)
            .writeAll()
            .getOutputLines(Task.OutputKind.DIRECT);

    List<String> expected = Arrays.asList("- compiler.warn.module.for.option.not.found: --add-exports, undefModule",
                                          "Test.java:1:34: compiler.err.doesnt.exist: undefPackage",
                                          "1 error", "1 warning");

    if (!expected.equals(log))
        throw new Exception("expected output not found: " + log);
}
 

private File compile(List<File> classpaths, List<JavaFileObject> files, boolean generate) throws IOException {
    JavaCompiler systemJavaCompiler = ToolProvider.getSystemJavaCompiler();
    StandardJavaFileManager fm = systemJavaCompiler.getStandardFileManager(null, null, null);
    if (classpaths.size() > 0)
        fm.setLocation(StandardLocation.CLASS_PATH, classpaths);
    JavacTask ct = (JavacTask) systemJavaCompiler.getTask(null, fm, diags, compileOptions, null, files);
    if (generate) {
        File destDir = new File(root, Integer.toString(counter.incrementAndGet()));
        // @@@ Assert that this directory didn't exist, or start counter at max+1
        destDir.mkdirs();
        fm.setLocation(StandardLocation.CLASS_OUTPUT, Arrays.asList(destDir));
        ct.generate();
        return destDir;
    }
    else {
        ct.analyze();
        return nullDir;
    }
}
 

public static void add(ProcessingEnvironment env, Runnable r) {
    try {
        JavacTask task = JavacTask.instance(env);
        TaskListener l = ((BasicJavacTask) task).getTaskListeners().iterator().next();
        // The TaskListener is an instanceof TestClose, but when using the
        // default class loaders. the taskListener uses a different
        // instance of Class<TestClose> than the anno processor.
        // If you try to evaluate
        //      TestClose tc = (TestClose) (l).
        // you get the following somewhat confusing error:
        //   java.lang.ClassCastException: TestClose cannot be cast to TestClose
        // The workaround is to access the fields of TestClose with reflection.
        Field f = l.getClass().getField("runnables");
        @SuppressWarnings("unchecked")
        List<Runnable> runnables = (List<Runnable>) f.get(l);
        runnables.add(r);
    } catch (Throwable t) {
        t.printStackTrace();
    }
}
 

public static void main(String... args) throws Exception {

        String SCRATCH_DIR = System.getProperty("user.dir");
        JavaCompiler javacTool = ToolProvider.getSystemJavaCompiler();
        java.io.File testDir = new java.io.File(SCRATCH_DIR);

        sourceA.dumpTo(testDir);
        sourceB.dumpTo(testDir);

        DiagnosticChecker diagChecker = new DiagnosticChecker();
        JavacTask ct = (JavacTask)javacTool.getTask(null, null, diagChecker,
                Arrays.asList("-XDrawDiagnostics", "-cp", testDir.getAbsolutePath()),
                null, Arrays.asList(sourceA.asJFO(testDir)));
        try {
            ct.analyze();
        } catch (Throwable ex) {
            //ignore abort exception thrown by javac
        }

        if (!diagChecker.errorFound) {
            throw new AssertionError("Missing diagnostic");
        }
    }
 

void run() throws Exception {
    File testSrc = new File(System.getProperty("test.src"));

    JavacTool tool = JavacTool.create();
    StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null);

    File f = new File(testSrc, T6993305.class.getSimpleName() + ".java");
    Iterable<? extends JavaFileObject> fos = fm.getJavaFileObjects(f);
    JavacTask task = tool.getTask(null, fm, null, null, null, fos);
    Iterable<? extends CompilationUnitTree> cus = task.parse();

    TestScanner s = new TestScanner();
    s.scan(cus, task);

    if (errors > 0)
        throw new Exception(errors + " errors occurred");
}
 

void run() throws Exception {
    JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
    JavaSource source = new JavaSource();
    JavacTask ct = (JavacTask)comp.getTask(null, null, null,
            null, null, Arrays.asList(source));
    try {
        if (!ct.call()) {
            throw new AssertionError(errorMessage +
                    source.getCharContent(true));
        }
    } catch (Throwable ex) {
        throw new AssertionError(errorMessage +
                source.getCharContent(true));
    }
    check();
}
 

public static void main(String[] args) throws IOException {
    Context context = new Context();
    MyMessages.preRegister(context);
    JavacTool tool = JavacTool.create();
    JavacTask task = tool.getTask(null, null, null, null, null,
                                  List.of(new MyFileObject()),
                                  context);
    task.parse();
    for (Element e : task.analyze()) {
        if (!e.getEnclosingElement().toString().equals("compiler.misc.unnamed.package"))
            throw new AssertionError(e.getEnclosingElement());
        System.out.println("OK: " + e.getEnclosingElement());
        return;
    }
    throw new AssertionError("No top-level classes!");
}
 

public void exec() {
    JavaFileObject sfo = new SimpleJavaFileObject(URI.create("myfo:/Test.java"),Kind.SOURCE) {
        public CharSequence getCharContent(boolean ignoreEncodingErrors) {
            return "\tclass ErroneousWithTab";
        }
    };
    StringWriter sw = new StringWriter();
    PrintWriter out = new PrintWriter(sw);
    List<? extends JavaFileObject> files = Arrays.asList(sfo);
    task = tool.getTask(sw, fm, null, null, null, files);
    try {
        ((JavacTask)task).analyze();
    }
    catch (Throwable t) {
        throw new Error("Compiler threw an exception");
    }
    System.err.println(sw.toString());
    if (!sw.toString().contains("/Test.java"))
        throw new Error("Bad source name in diagnostic");
}
 

@Test
void testClassesInProfiles() throws Exception {
    for (Profile p: Profile.values()) {
        for (Map.Entry<Profile, List<JavaFileObject>> e: testClasses.entrySet()) {
            for (JavaFileObject fo: e.getValue()) {
                DiagnosticCollector<JavaFileObject> dl =
                        new DiagnosticCollector<JavaFileObject>();
                List<String> opts = (p == Profile.DEFAULT)
                        ? Collections.<String>emptyList()
                        : Arrays.asList("-profile", p.name);
                JavacTask task = (JavacTask) javac.getTask(null, fm, dl, opts, null,
                        Arrays.asList(fo));
                task.analyze();

                List<String> expectDiagCodes = (p.value >= e.getKey().value)
                        ? Collections.<String>emptyList()
                        : Arrays.asList("compiler.err.not.in.profile");

                checkDiags(opts + " " + fo.getName(), dl.getDiagnostics(), expectDiagCodes);
            }
        }
    }
}
 

public FrontendOnlyJavacTask(JavacTask task) {
  super(task);
  javacTask = task;

  // Add the entering plugin first so that all other plugins and annotation processors will
  // run with the TreeBackedElements already entered
  addPlugin(new EnteringPlugin());
}
 

public boolean run(String sourcepath, File outdir, List<String> classes) {
    //System.err.println("run: sourcepath:" + sourcepath + " outdir:" + outdir + " classes:" + classes);
    if (sourcepath == null)
        throw new IllegalArgumentException("sourcepath not set");
    if (outdir == null)
        throw new IllegalArgumentException("source output dir not set");

    JavacTool tool = JavacTool.create();
    StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null);

    try {
        fm.setLocation(StandardLocation.SOURCE_OUTPUT, Collections.singleton(outdir));
        fm.setLocation(StandardLocation.SOURCE_PATH, splitPath(sourcepath));
        List<JavaFileObject> files = new ArrayList<JavaFileObject>();
        for (String c: classes) {
            JavaFileObject fo = fm.getJavaFileForInput(
                    StandardLocation.SOURCE_PATH, c, JavaFileObject.Kind.SOURCE);
            if (fo == null)
                error("class not found: " + c);
            else
                files.add(fo);
        }

        JavacTask t = tool.getTask(null, fm, null, null, null, files);
        Iterable<? extends CompilationUnitTree> trees = t.parse();
        for (CompilationUnitTree tree: trees) {
            makeStub(fm, tree);
        }
    } catch (IOException e) {
        error("IO error " + e, e);
    }

    return (errors == 0);
}
 

void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {
    JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,
            null, null, Arrays.asList(source));
    try {
        ct.analyze();
    } catch (Throwable ex) {
        throw new AssertionError("Error thron when compiling the following code:\n" + source.getCharContent(true));
    }
    check();
}
 

void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {
    JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,
            null, null, Arrays.asList(source));
    try {
        ct.analyze();
    } catch (Throwable ex) {
        throw new AssertionError("Error thrown when compiling the following code:\n" + source.getCharContent(true));
    }
    check();
}
 

void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {
    JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,
            null, null, Arrays.asList(source));
    try {
        ct.analyze();
    } catch (Throwable ex) {
        throw new AssertionError("Error thrown when compiling the following code:\n" + source.getCharContent(true));
    }
    check();
}
 

@Override
public void run() {
    int id = checkCount.incrementAndGet();
    final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
    JavaSource source = new JavaSource(id);
    ErrorChecker ec = new ErrorChecker();
    JavacTask ct = (JavacTask)tool.getTask(null, fm.get(), ec,
            null, null, Arrays.asList(source));
    ct.call();
    check(source, ec, id);
}
 

public void run() {
    JavacTask ct = (JavacTask)comp.getTask(null, fm.get(), diagChecker,
            Arrays.asList("-XDverboseResolution=all,-predef,-internal,-object-init"),
            null, Arrays.asList(source));
    try {
        ct.analyze();
    } catch (Throwable ex) {
        throw new
            AssertionError("Error thron when analyzing the following source:\n" +
                source.getCharContent(true));
    }
    check();
}
 

void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {
    JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,
            null, null, Arrays.asList(source));
    try {
        ct.analyze();
    } catch (Throwable ex) {
        fail("Error thrown when analyzing the following source:\n" + source.getCharContent(true));
    }
    check();
}
 

void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {
    JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,
            null, null, Arrays.asList(source));
    try {
        ct.analyze();
    } catch (Throwable ex) {
        throw new AssertionError("Error thron when compiling the following code:\n" + source.getCharContent(true));
    }
    check();
}
 

protected void check() throws Exception {
    String[] options = {
        "-XDshouldStopPolicy=ATTR",
        "-XDverboseResolution=success,failure,applicable,inapplicable,deferred-inference,predef"
    };

    AbstractProcessor[] processors = { new ResolveCandidateFinder(), null };

    @SuppressWarnings("unchecked")
    DiagnosticListener<? super JavaFileObject>[] diagListeners =
            new DiagnosticListener[] { new DiagnosticHandler(false), new DiagnosticHandler(true) };

    for (int i = 0 ; i < options.length ; i ++) {
        JavacTask ct = (JavacTask)comp.getTask(null, fm, diagListeners[i],
                Arrays.asList(options[i]), null, Arrays.asList(jfo));
        if (processors[i] != null) {
            ct.setProcessors(Collections.singleton(processors[i]));
        }
        ct.analyze();
    }

    //check diags
    for (Diagnostic<? extends JavaFileObject> diag : diags) {
        for (DiagnosticProcessor proc : diagProcessors) {
            if (proc.matches(diag)) {
                proc.process(diag);
                break;
            }
        }
    }
    //check all candidates have been used up
    for (Map.Entry<ElementKey, Candidate> entry : candidatesMap.entrySet()) {
        if (!seenCandidates.contains(entry.getKey())) {
            error("Redundant @Candidate annotation on method " + entry.getKey().elem + " sig = " + entry.getKey().elem.asType());
        }
    }
}
 

@Test
public void testModuleImplicitModuleBoundaries(Path base) throws Exception {
    Path src = base.resolve("src");
    Path src_m1 = src.resolve("m1x");
    tb.writeJavaFiles(src_m1,
                      "module m1x { exports api1; }",
                      "package api1; public class Api1 { public void call() { } }");
    Path src_m2 = src.resolve("m2x");
    tb.writeJavaFiles(src_m2,
                      "module m2x { requires m1x; exports api2; }",
                      "package api2; public class Api2 { public static api1.Api1 get() { return null; } }");
    Path src_m3 = src.resolve("m3x");
    tb.writeJavaFiles(src_m3,
                      "module m3x { requires m2x; }",
                      "package test; public class Test { { api2.Api2.get().call(); api2.Api2.get().toString(); } }");
    Path classes = base.resolve("classes");
    tb.createDirectories(classes);

    String log = new JavacTask(tb)
            .options("-XDrawDiagnostics",
                     "--module-source-path", src.toString())
            .outdir(classes)
            .files(findJavaFiles(src))
            .run(Task.Expect.FAIL)
            .writeAll()
            .getOutput(Task.OutputKind.DIRECT);

    if (!log.contains("Test.java:1:52: compiler.err.not.def.access.class.intf.cant.access.reason: call(), api1.Api1, api1, (compiler.misc.not.def.access.does.not.read: m3x, api1, m1x)") ||
        !log.contains("Test.java:1:76: compiler.err.not.def.access.class.intf.cant.access: toString(), java.lang.Object"))
        throw new Exception("expected output not found");
}
 

private void performClassSignatureFromElementTest (final String testClassName) throws Exception {
       InputStream in = this.prepareData (testClassName);
try {
    JavacTask jt = prepareJavac ();
    TypeElement be = ElementUtils.getTypeElementByBinaryName(jt, testClassName);
           assertNotNull ("Javac Error", be);
    String className = ClassFileUtil.encodeClassName(be);
    ClassFile cf = new ClassFile (in, true);
    String expectedName = cf.getName().getInternalName().replace('/','.');  //NOI18N
    assertEquals (expectedName, className);
} finally {
    in.close ();
}
   }
 

void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {
    JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,
            null, null, Arrays.asList(source));
    try {
        ct.parse();
    } catch (Throwable ex) {
        throw new AssertionError("Error thron when parsing the following source:\n" + source.getCharContent(true));
    }
    check();
}
 

void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {
    JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,
            null, null, Arrays.asList(source));
    try {
        ct.analyze();
    } catch (Throwable ex) {
        fail("Error thrown when analyzing the following source:\n" + source.getCharContent(true));
    }
    check();
}