Java Code Examples for javax.tools.JavaFileObject

The following examples show how to use javax.tools.JavaFileObject. These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may want to check out the right sidebar which shows the related API usage.
Example 1
Source Project: netbeans   Source File: Utilities.java    License: Apache License 2.0 6 votes vote down vote up
public static JavacTaskImpl createJavac(JavaFileManager fm, JavaFileObject... sources) {
    final String version = System.getProperty("java.vm.specification.version"); //NOI18N
    final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
    assert tool != null;
    Context context = new Context();
    //need to preregister the Messages here, because the getTask below requires Log instance:
    Log.preRegister(context, DEV_NULL);
    JavacTaskImpl task = (JavacTaskImpl)JavacTool.create().getTask(null, 
            fm,
            null, Arrays.asList("-source", version, "-target", version, "-Xjcov", "-XDshouldStopPolicy=GENERATE"), null, Arrays.asList(sources),
            context);
    NBParserFactory.preRegister(context);
    NBTreeMaker.preRegister(context);
    NBEnter.preRegister(context);
    return task;
}
 
Example 2
Source Project: openjdk-jdk8u   Source File: ClassReader.java    License: GNU General Public License v2.0 6 votes vote down vote up
private void fillIn(PackageSymbol p,
                    Location location,
                    Iterable<JavaFileObject> files)
{
    currentLoc = location;
    for (JavaFileObject fo : files) {
        switch (fo.getKind()) {
        case CLASS:
        case SOURCE: {
            // TODO pass binaryName to includeClassFile
            String binaryName = fileManager.inferBinaryName(currentLoc, fo);
            String simpleName = binaryName.substring(binaryName.lastIndexOf(".") + 1);
            if (SourceVersion.isIdentifier(simpleName) ||
                simpleName.equals("package-info"))
                includeClassFile(p, fo);
            break;
        }
        default:
            extraFileActions(p, fo);
        }
    }
}
 
Example 3
@Override
public void click(Diagnostic diagnostic) {
    Log.d(TAG, "click() called with: diagnostic = [" + diagnostic + "]");
    mMainActivity.closeDrawer(GravityCompat.START);

    Object source = diagnostic.getSource();
    if (source instanceof JavaFileObject && diagnostic.getKind() == Diagnostic.Kind.ERROR) {
        String path = ((JavaFileObject) source).getName();
        int i = mPagePresenter.gotoPage(path);
        if (i == -1) {
            mPagePresenter.addPage(path, true);
        }
        EditPageContract.SourceView editor = mPagePresenter.getCurrentPage();
        if (editor == null) {
            Log.d(TAG, "click: editor null");
            return;
        }
        int startPosition = (int) diagnostic.getStartPosition();
        int endPosition = (int) diagnostic.getEndPosition();
        editor.highlightError(startPosition, endPosition);
        editor.setCursorPosition(endPosition);
    } else {
        // TODO: 19/07/2017 implement other
    }
}
 
Example 4
Source Project: openjdk-8-source   Source File: RootDocImpl.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * Do lazy initialization of "documentation" string.
 */
@Override
protected String documentation() {
    if (documentation == null) {
        JavaFileObject overviewPath = getOverviewPath();
        if (overviewPath == null) {
            // no doc file to be had
            documentation = "";
        } else {
            // read from file
            try {
                documentation = readHTMLDocumentation(
                    overviewPath.openInputStream(),
                    overviewPath);
            } catch (IOException exc) {
                documentation = "";
                env.error(null, "javadoc.File_Read_Error", overviewPath.getName());
            }
        }
    }
    return documentation;
}
 
Example 5
void run() throws Exception {
    List<File> files = new ArrayList<File>();
    File testSrc = new File(System.getProperty("test.src"));
    for (File f: testSrc.listFiles()) {
        if (f.isFile() && f.getName().endsWith(".java"))
            files.add(f);
    }

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

    Iterable<? extends JavaFileObject> fos = fm.getJavaFileObjectsFromFiles(files);

    JavacTask t = javac.getTask(null, fm, null, null, null, fos);
    DocTrees trees = DocTrees.instance(t);

    Iterable<? extends CompilationUnitTree> units = t.parse();

    DeclScanner ds = new DeclScanner(trees);
    for (CompilationUnitTree unit: units) {
        ds.scan(unit, null);
    }

    if (errors > 0)
        throw new Exception(errors + " errors occurred");
}
 
Example 6
Source Project: buck   Source File: AnnotationProcessor.java    License: Apache License 2.0 6 votes vote down vote up
@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
  if (annotations.size() == 0) return true;
  try {
    JavaFileObject sourceFile =
        processingEnv.getFiler().createSourceFile("com.example.gwt.shared.MyFactory");
    try (PrintWriter out = new PrintWriter(sourceFile.openWriter())) {
      out.println("package com.example.gwt.shared;");
      out.println("public class MyFactory {}");
    }
  } catch (IOException ex) {
    throw new RuntimeException("Unexpected IOException caught", ex);
  }

  return false;
}
 
Example 7
Source Project: compile-testing   Source File: CompilerTest.java    License: Apache License 2.0 6 votes vote down vote up
@Test
public void options() {
  NoOpProcessor processor = new NoOpProcessor();
  Object[] options1 = {"-Agone=nowhere"};
  JavaFileObject[] files = {HELLO_WORLD};
  Compilation unused =
      javac()
          .withOptions(options1)
          .withOptions(ImmutableList.of("-Ab=2", "-Ac=3"))
          .withProcessors(processor)
          .compile(files);
  assertThat(processor.options)
      .containsExactly(
          "b", "2",
          "c", "3")
      .inOrder();
}
 
Example 8
Source Project: openjdk-8-source   Source File: Log.java    License: GNU General Public License v2.0 6 votes vote down vote up
/** Construct a log with given I/O redirections.
 */
protected Log(Context context, PrintWriter errWriter, PrintWriter warnWriter, PrintWriter noticeWriter) {
    super(JCDiagnostic.Factory.instance(context));
    context.put(logKey, this);
    this.errWriter = errWriter;
    this.warnWriter = warnWriter;
    this.noticeWriter = noticeWriter;

    @SuppressWarnings("unchecked") // FIXME
    DiagnosticListener<? super JavaFileObject> dl =
        context.get(DiagnosticListener.class);
    this.diagListener = dl;

    diagnosticHandler = new DefaultDiagnosticHandler();

    messages = JavacMessages.instance(context);
    messages.add(Main.javacBundleName);

    final Options options = Options.instance(context);
    initOptions(options);
    options.addListener(new Runnable() {
        public void run() {
            initOptions(options);
        }
    });
}
 
Example 9
Source Project: buck   Source File: JavaInMemoryFileObjectTest.java    License: Apache License 2.0 6 votes vote down vote up
@Test
public void testJavaFileContent() throws Exception {
  String relativePath = "com/facebook/buck/java/JavaInMemoryFileObjectTest.class";
  JavaInMemoryFileObject inMemoryFileObject =
      new JavaInMemoryFileObject(
          URI.create("file://tmp/" + relativePath), relativePath, JavaFileObject.Kind.CLASS);

  OutputStream out = inMemoryFileObject.openOutputStream();
  out.write("content".getBytes());
  out.close();

  TestJar jar = writeToJar(inMemoryFileObject);
  assertEquals(7, jar.getZipEntries().size());
  assertEquals(7, jar.getEntriesContent().size());
  assertEquals("content", jar.getEntriesContent().get(6));
}
 
Example 10
Source Project: jdk8u60   Source File: RetentionAnnoCombo.java    License: GNU General Public License v2.0 6 votes vote down vote up
private boolean getCompileResult(String contents, String className,
        boolean shouldCompile) throws Exception{

    DiagnosticCollector<JavaFileObject> diagnostics =
            new DiagnosticCollector<JavaFileObject>();
    boolean ok = compileCode(className, contents, diagnostics);

    String expectedErrKey = "compiler.err.invalid.repeatable" +
                                    ".annotation.retention";
    if (!shouldCompile && !ok) {
        for (Diagnostic<?> d : diagnostics.getDiagnostics()) {
            if (!((d.getKind() == Diagnostic.Kind.ERROR) &&
                d.getCode().contains(expectedErrKey))) {
                error("FAIL: Incorrect error given, expected = "
                        + expectedErrKey + ", Actual = " + d.getCode()
                        + " for className = " + className, contents);
            }
        }
    }

    return (shouldCompile  == ok);
}
 
Example 11
/**
 * Verify that expected output files are written for given options.
 */
@Test
public void testNoIndex() throws Exception {
    JavaFileObject srcFile = createSimpleJavaFileObject();
    DocumentationTool tool = ToolProvider.getSystemDocumentationTool();
    StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null);
    File outDir = getOutDir();
    fm.setLocation(DocumentationTool.Location.DOCUMENTATION_OUTPUT, Arrays.asList(outDir));
    Iterable<? extends JavaFileObject> files = Arrays.asList(srcFile);
    Iterable<String> options = Arrays.asList("-noindex");
    DocumentationTask t = tool.getTask(null, fm, null, null, options, files);
    if (t.call()) {
        System.err.println("task succeeded");
        Set<String> expectFiles = new TreeSet<String>(standardExpectFiles);
        expectFiles.remove("index-all.html");
        checkFiles(outDir, expectFiles);
    } else {
        error("task failed");
    }
}
 
Example 12
@Test
public void invalidJsonObjectReferences() {
	List<Diagnostic<? extends JavaFileObject>> diagnostics = compileTestCase(ReferenceJsonObject.class);
	Assert.assertEquals(3, diagnostics.size());
	String error1 = diagnostics.get(0).getMessage(Locale.ENGLISH);
	String error2 = diagnostics.get(1).getMessage(Locale.ENGLISH);
	String error3 = diagnostics.get(2).getMessage(Locale.ENGLISH);
	Assert.assertTrue(
			error1.contains("'com.dslplatform.json.models.ReferenceJsonObject.ImplFailed1' is 'com.dslplatform.json.JsonObject', but it doesn't have JSON_READER field.")
					|| error2.contains("'com.dslplatform.json.models.ReferenceJsonObject.ImplFailed1' is 'com.dslplatform.json.JsonObject', but it doesn't have JSON_READER field.")
					|| error3.contains("'com.dslplatform.json.models.ReferenceJsonObject.ImplFailed1' is 'com.dslplatform.json.JsonObject', but it doesn't have JSON_READER field.")
	);
	Assert.assertTrue(
			error1.contains("'com.dslplatform.json.models.ReferenceJsonObject.ImplFailed2' is 'com.dslplatform.json.JsonObject', but its JSON_READER field is not public and static.")
					|| error2.contains("'com.dslplatform.json.models.ReferenceJsonObject.ImplFailed2' is 'com.dslplatform.json.JsonObject', but its JSON_READER field is not public and static.")
					|| error3.contains("'com.dslplatform.json.models.ReferenceJsonObject.ImplFailed2' is 'com.dslplatform.json.JsonObject', but its JSON_READER field is not public and static.")
	);
	Assert.assertTrue(
			error1.contains("'com.dslplatform.json.models.ReferenceJsonObject.ImplFailed3' is 'com.dslplatform.json.JsonObject', but its JSON_READER field is not of correct type.")
					|| error2.contains("'com.dslplatform.json.models.ReferenceJsonObject.ImplFailed3' is 'com.dslplatform.json.JsonObject', but its JSON_READER field is not of correct type.")
					|| error3.contains("'com.dslplatform.json.models.ReferenceJsonObject.ImplFailed3' is 'com.dslplatform.json.JsonObject', but its JSON_READER field is not of correct type.")
	);
}
 
Example 13
@Test
public void testDirectAccess1() throws Exception {
    JavaFileObject srcFile = createSimpleJavaFileObject();
    Iterable<? extends JavaFileObject> files = Arrays.asList(srcFile);
    Context c = new Context();
    Messager.preRegister(c, "javadoc");
    StandardJavaFileManager fm = new JavacFileManager(c, true, null);
    File outDir = getOutDir();
    fm.setLocation(DocumentationTool.Location.DOCUMENTATION_OUTPUT, Arrays.asList(outDir));
    DocumentationTask t = new JavadocTaskImpl(c, null, null, files);
    if (t.call()) {
        System.err.println("task succeeded");
    } else {
        throw new Exception("task failed");
    }
}
 
Example 14
Source Project: yugong   Source File: JdkCompiler.java    License: GNU General Public License v2.0 6 votes vote down vote up
private JavaFileManagerImpl buildFileManager(JdkCompilerClassLoader classLoader, ClassLoader loader,
                                             DiagnosticCollector<JavaFileObject> diagnostics) {
    StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnostics, null, null);
    if (loader instanceof URLClassLoader
        && (!"sun.misc.Launcher$AppClassLoader".equalsIgnoreCase(loader.getClass().getName()))) {
        try {
            URLClassLoader urlClassLoader = (URLClassLoader) loader;
            List<File> paths = new ArrayList<File>();
            for (URL url : urlClassLoader.getURLs()) {
                File file = new File(url.getFile());
                paths.add(file);
            }

            fileManager.setLocation(StandardLocation.CLASS_PATH, paths);
        } catch (Throwable e) {
            throw new YuGongException(e);
        }
    }

    return new JavaFileManagerImpl(fileManager, classLoader);
}
 
Example 15
Source Project: openjdk-jdk9   Source File: Task_reuseTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
private DocumentationTask getAndRunTask() throws Exception {
    JavaFileObject srcFile = createSimpleJavaFileObject();
    DocumentationTool tool = ToolProvider.getSystemDocumentationTool();
    try (StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null)) {
        File outDir = getOutDir();
        fm.setLocation(DocumentationTool.Location.DOCUMENTATION_OUTPUT, Arrays.asList(outDir));
        Iterable<? extends JavaFileObject> files = Arrays.asList(srcFile);
        DocumentationTask t = tool.getTask(null, fm, null, null, null, files);
        if (t.call()) {
            System.err.println("task succeeded");
            return t;
        } else {
            throw new Exception("task failed");
        }
    }
}
 
Example 16
/** Enter a set of generated class files. */
private List<ClassSymbol> enterClassFiles(Map<String, JavaFileObject> classFiles) {
    ClassReader reader = ClassReader.instance(context);
    Names names = Names.instance(context);
    List<ClassSymbol> list = List.nil();

    for (Map.Entry<String,JavaFileObject> entry : classFiles.entrySet()) {
        Name name = names.fromString(entry.getKey());
        JavaFileObject file = entry.getValue();
        if (file.getKind() != JavaFileObject.Kind.CLASS)
            throw new AssertionError(file);
        ClassSymbol cs;
        if (isPkgInfo(file, JavaFileObject.Kind.CLASS)) {
            Name packageName = Convert.packagePart(name);
            PackageSymbol p = reader.enterPackage(packageName);
            if (p.package_info == null)
                p.package_info = reader.enterClass(Convert.shortName(name), p);
            cs = p.package_info;
            if (cs.classfile == null)
                cs.classfile = file;
        } else
            cs = reader.enterClass(name, file);
        list = list.prepend(cs);
    }
    return list.reverse();
}
 
Example 17
private boolean getCompileResult(String contents, String className,
        boolean shouldCompile) throws Exception{

    DiagnosticCollector<JavaFileObject> diagnostics =
            new DiagnosticCollector<JavaFileObject>();
    boolean ok = compileCode(className, contents, diagnostics);

    String expectedErrKey = "compiler.err.invalid.repeatable" +
                                    ".annotation.retention";
    if (!shouldCompile && !ok) {
        for (Diagnostic<?> d : diagnostics.getDiagnostics()) {
            if (!((d.getKind() == Diagnostic.Kind.ERROR) &&
                d.getCode().contains(expectedErrKey))) {
                error("FAIL: Incorrect error given, expected = "
                        + expectedErrKey + ", Actual = " + d.getCode()
                        + " for className = " + className, contents);
            }
        }
    }

    return (shouldCompile  == ok);
}
 
Example 18
Source Project: openjdk-jdk9   Source File: TestSearchPaths.java    License: GNU General Public License v2.0 6 votes vote down vote up
void testClassOutput() throws IOException {
    String test = "testClassOutput";
    System.err.println("test: " + test);

    for (int i = 1; i <= 5; i++) {
        File classes = createDir(test + "/" + i + "/classes");
        List<String> options;
        switch (i) {
            default:
                options = getOptions("-d", classes.getPath());
                break;

            case 3:
                setLocation(CLASS_OUTPUT, classes);
                options = null;
                break;
        }
        List<JavaFileObject> sources = getSources("class C" + i + " { }");
        callTask(options, sources);
        checkPath(CLASS_OUTPUT, Mode.EQUALS, classes);
        checkFile(CLASS_OUTPUT, "C" + i + ".class");
    }

    tested.add(CLASS_OUTPUT);
}
 
Example 19
Source Project: openjdk-jdk9   Source File: JavacTask.java    License: GNU General Public License v2.0 6 votes vote down vote up
private Iterable<? extends JavaFileObject> joinFiles(
        List<String> files, List<JavaFileObject> fileObjects) {
    if (files == null)
        return fileObjects;
    if (internalFileManager == null)
        internalFileManager = compiler.getStandardFileManager(null, null, null);
    Iterable<? extends JavaFileObject> filesAsFileObjects =
            internalFileManager.getJavaFileObjectsFromStrings(files);
    if (fileObjects == null)
        return filesAsFileObjects;
    List<JavaFileObject> combinedList = new ArrayList<>();
    for (JavaFileObject o : filesAsFileObjects)
        combinedList.add(o);
    combinedList.addAll(fileObjects);
    return combinedList;
}
 
Example 20
@Override
public JavaFileObject createClassFile(CharSequence name,
		Element... originatingElements) throws IOException {
	JavaFileObject jfo = _fileManager.getJavaFileForOutput(
			StandardLocation.CLASS_OUTPUT, name.toString(), JavaFileObject.Kind.CLASS, null);
	URI uri = jfo.toUri();
	if (_createdFiles.contains(uri)) {
		throw new FilerException("Class file already created : " + name); //$NON-NLS-1$
	}

	_createdFiles.add(uri);
	return new HookedJavaFileObject(jfo, jfo.getName(), name.toString(), this);
}
 
Example 21
Source Project: parceler   Source File: MemoryClassLoader.java    License: Apache License 2.0 5 votes vote down vote up
public void add(Map<String, String> map) {
    List<Source> list = new ArrayList<Source>();
    for (Map.Entry<String, String> entry : map.entrySet()) {
        list.add(new Source(entry.getKey(), JavaFileObject.Kind.SOURCE, entry.getValue()));
    }
    this.compiler.getTask(null, this.manager, null, null, null, list).call();
}
 
Example 22
@Override @DefinedBy(Api.COMPILER)
public String inferBinaryName(Location location, JavaFileObject file) {
    checkNotModuleOrientedLocation(location);
    Objects.requireNonNull(file);
    // Need to match the path semantics of list(location, ...)
    Iterable<? extends Path> path = getLocationAsPaths(location);
    if (path == null) {
        return null;
    }

    if (file instanceof PathFileObject) {
        return ((PathFileObject) file).inferBinaryName(path);
    } else
        throw new IllegalArgumentException(file.getClass().getName());
}
 
Example 23
public JavaSource() {
    super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
    source = template.replaceAll("#LR", lrk.retStr)
            .replaceAll("#R1", rt1.retTypeStr)
            .replaceAll("#R2", rt2.retTypeStr)
            .replaceAll("#A1", ak1.argTypeStr)
            .replaceAll("#A2", ak2.argTypeStr)
            .replaceAll("#E1", ek1.exceptionStr)
            .replaceAll("#E2", ek2.exceptionStr);
}
 
Example 24
Source Project: openjdk-jdk9   Source File: JavadocTool.java    License: GNU General Public License v2.0 5 votes vote down vote up
private void parse(Iterable<? extends JavaFileObject> files, ListBuffer<JCCompilationUnit> trees,
                   boolean trace) {
    for (JavaFileObject fo: files) {
        if (uniquefiles.add(fo)) { // ignore duplicates
            if (trace)
                docenv.notice("main.Loading_source_file", fo.getName());
            trees.append(parse(fo));
        }
    }
}
 
Example 25
void test(String stmt) throws IOException {
    System.err.println("Test: " + stmt);
    List<String> options = Collections.<String>emptyList();
    List<? extends JavaFileObject> files = Arrays.asList(new JavaSource(stmt));
    JavacTask t = tool.getTask(null, fm, null, options, null, files);
    checkEqual(scan(t.parse()), stmt);
}
 
Example 26
Source Project: postman   Source File: PostmanProcessorTest.java    License: MIT License 5 votes vote down vote up
@Test
public void testMultipleErrorsAndWarnings() throws Exception {
    //language=JAVA
    final String sourceString = "package test;\n"
            + "import com.workday.postman.annotations.NotParceled;\n"
            + "import com.workday.postman.annotations.Parceled;\n"
            + "import com.workday.postman.annotations.PostCreateChild;\n"
            + "\n"
            + " public class TestClass {\n"
            + "   @Parceled\n"
            + "   final String myFinal = \"The final word.\";\n"
            + "   @NotParceled\n"
            + "   String myNotParceled;\n"
            + "   @Parceled\n"
            + "   private String myPrivate;\n"
            + "   @Parceled\n"
            + "   static String myStatic;\n"
            + "   @PostCreateChild\n"
            + "   private void onPostCreateChild(Object o) { }\n"
            + " }";
    JavaFileObject source = JavaFileObjects.forSourceString("test.TestClass", sourceString);
    assertAbout(javaSource()).that(source)
                             .processedWith(new PostmanProcessor())
                             .failsToCompile()
                             .withErrorCount(3)
                             .withErrorContaining("Cannot access final field")
                             .and()
                             .withErrorContaining("Cannot access private field")
                             .and()
                             .withErrorContaining(
                                     "Methods annotated with @PostCreateChild cannot be "
                                             + "private")
                             .and()
                             .withWarningCount(2)
                             .withWarningContaining(
                                     "You marked static field myStatic as parceled")
                             .and()
                             .withWarningContaining("NotParceled annotations are ignored");

}
 
Example 27
void run() throws Exception {
    List<File> files = new ArrayList<File>();
    File testSrc = new File(System.getProperty("test.src"));
    for (File f: testSrc.listFiles()) {
        if (f.isFile() && f.getName().endsWith(".java"))
            files.add(f);
    }

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

    Iterable<? extends JavaFileObject> fos = fm.getJavaFileObjectsFromFiles(files);

    JavacTask t = javac.getTask(null, fm, null, null, null, fos);
    DocTrees trees = DocTrees.instance(t);

    Iterable<? extends CompilationUnitTree> units = t.parse();

    Set<DocTree.Kind> found = EnumSet.noneOf(DocTree.Kind.class);
    DeclScanner ds = new DeclScanner(trees, found);
    for (CompilationUnitTree unit: units) {
        ds.scan(unit, null);
    }

    for (DocTree.Kind k: DocTree.Kind.values()) {
        if (!found.contains(k) && k != DocTree.Kind.OTHER)
            error("not found: " + k);
    }

    if (errors > 0)
        throw new Exception(errors + " errors occurred");
}
 
Example 28
Source Project: openjdk-8   Source File: JavaCompiler.java    License: GNU General Public License v2.0 5 votes vote down vote up
/** Try to open input stream with given name.
 *  Report an error if this fails.
 *  @param filename   The file name of the input stream to be opened.
 */
public CharSequence readSource(JavaFileObject filename) {
    try {
        inputFiles.add(filename);
        return filename.getCharContent(false);
    } catch (IOException e) {
        log.error("error.reading.file", filename, JavacFileManager.getMessage(e));
        return null;
    }
}
 
Example 29
JavacSourcePosition(JavaFileObject sourcefile,
                    int pos,
                    Position.LineMap lineMap) {
    this.sourcefile = sourcefile;
    this.pos = pos;
    this.lineMap = (pos != Position.NOPOS) ? lineMap : null;
}
 
Example 30
Source Project: hottub   Source File: AbstractLog.java    License: GNU General Public License v2.0 5 votes vote down vote up
protected DiagnosticSource getSource(JavaFileObject file) {
    if (file == null)
        return DiagnosticSource.NO_SOURCE;
    DiagnosticSource s = sourceMap.get(file);
    if (s == null) {
        s = new DiagnosticSource(file, this);
        sourceMap.put(file, s);
    }
    return s;
}