Java JavacTask.parse方法代码示例

import com.sun.source.util.JavacTask; //导入方法依赖的package包/类
public static void main(String[] args) throws Exception {
    PrintWriter out = new PrintWriter(System.out, true);
    JavacTool tool = JavacTool.create();
    try (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, "ArrayPositionConsistency.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);
    }
}
 

import com.sun.source.util.JavacTask; //导入方法依赖的package包/类
void run(boolean disableStringFolding) throws IOException {
    List<String> argsList = new ArrayList<String>();
    if (disableStringFolding) {
        argsList.add("-XDallowStringFolding=false");
    }
    JavacTask ct = (JavacTask)tool.getTask(null, null, null,
            argsList,
            null,
            Arrays.asList(source));
    Iterable<? extends CompilationUnitTree> trees = ct.parse();
    String text = trees.toString();
    System.out.println(text);

    if (disableStringFolding) {
        if (text.contains("FOLDED")) {
            throw new AssertionError("Expected no string folding");
        }
        if (!text.contains("\"F\"")) {
            throw new AssertionError("Expected content not found");
        }
    } else {
        if (!text.contains("FOLDED")) {
            throw new AssertionError("Expected string folding");
        }
    }
}
 

import com.sun.source.util.JavacTask; //导入方法依赖的package包/类
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();
    try (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");
    }
}
 

import com.sun.source.util.JavacTask; //导入方法依赖的package包/类
public static void main(String[] args) throws Exception {
    PrintWriter out = new PrintWriter(System.out, true);
    JavacTool tool = JavacTool.create();
    try (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);
    }
}
 

import com.sun.source.util.JavacTask; //导入方法依赖的package包/类
void run() throws Exception {
    File testSrc = new File(System.getProperty("test.src"));

    JavacTool tool = JavacTool.create();
    try (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");
    }
}
 

import com.sun.source.util.JavacTask; //导入方法依赖的package包/类
/**
 * Read a file.
 * @param file the file to be read
 * @return the tree for the content of the file
 * @throws IOException if any IO errors occur
 * @throws TreePosTest.ParseException if any errors occur while parsing the file
 */
JCCompilationUnit read(File file) throws IOException, ParseException {
    JavacTool tool = JavacTool.create();
    r.errors = 0;
    Iterable<? extends JavaFileObject> files = fm.getJavaFileObjects(file);
    JavacTask task = tool.getTask(pw, fm, r, Collections.<String>emptyList(), null, files);
    Iterable<? extends CompilationUnitTree> trees = task.parse();
    pw.flush();
    if (r.errors > 0)
        throw new ParseException(sw.toString());
    Iterator<? extends CompilationUnitTree> iter = trees.iterator();
    if (!iter.hasNext())
        throw new Error("no trees found");
    JCCompilationUnit t = (JCCompilationUnit) iter.next();
    if (iter.hasNext())
        throw new Error("too many trees found");
    return t;
}
 

import com.sun.source.util.JavacTask; //导入方法依赖的package包/类
public static void main(String[] args) throws Exception {
    PrintWriter out = new PrintWriter(System.out, true);
    JavacTool tool = JavacTool.create();
    try (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);
    }
}
 

import com.sun.source.util.JavacTask; //导入方法依赖的package包/类
/**
 * Read a file.
 * @param file the file to be read
 * @return the tree for the content of the file
 * @throws IOException if any IO errors occur
 * @throws TreePosTest.ParseException if any errors occur while parsing the file
 */
JCCompilationUnit read(File file) throws IOException, ParseException {
    JavacTool tool = JavacTool.create();
    r.errors = 0;
    Iterable<? extends JavaFileObject> files = fm.getJavaFileObjects(file);
    JavacTask task = tool.getTask(pw, fm, r, List.of("-proc:none"), null, files);
    Iterable<? extends CompilationUnitTree> trees = task.parse();
    pw.flush();
    if (r.errors > 0)
        throw new ParseException(sw.toString());
    Iterator<? extends CompilationUnitTree> iter = trees.iterator();
    if (!iter.hasNext())
        throw new Error("no trees found");
    JCCompilationUnit t = (JCCompilationUnit) iter.next();
    if (iter.hasNext())
        throw new Error("too many trees found");
    return t;
}
 

import com.sun.source.util.JavacTask; //导入方法依赖的package包/类
void run() throws Exception {
    Context context = new Context();
    JavacFileManager.preRegister(context);
    Trees trees = JavacTrees.instance(context);
    StringWriter strOut = new StringWriter();
    PrintWriter pw = new PrintWriter(strOut);
    DPrinter dprinter = new DPrinter(pw, trees);
    final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
    JavacTask ct = (JavacTask)tool.getTask(null, null, null, null, null, Arrays.asList(new JavaSource()));
    Iterable<? extends CompilationUnitTree> elements = ct.parse();
    ct.analyze();
    Assert.check(elements.iterator().hasNext());
    dprinter.treeTypes(true).printTree("", (JCTree)elements.iterator().next());
    String output = strOut.toString();
    Assert.check(!output.contains("java.lang.Object"), "there shouldn't be any type instantiated to Object");
}
 

import com.sun.source.util.JavacTask; //导入方法依赖的package包/类
public static void main(String[] args) throws Exception {
    PrintWriter out = new PrintWriter(System.out, true);
    JavacTool tool = JavacTool.create();
    try (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, "T6345974.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);
    }
}
 

import com.sun.source.util.JavacTask; //导入方法依赖的package包/类
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!");
}
 

import com.sun.source.util.JavacTask; //导入方法依赖的package包/类
public static void main(String[] args) throws IOException {
    JavaFileObject sfo = new SimpleJavaFileObject(URI.create("myfo:/Test.java"),Kind.SOURCE) {
        public CharSequence getCharContent(boolean ignoreEncodingErrors) {
            return "class BadName { Object o = j; }";
        }
    };
    List<? extends JavaFileObject> files = Arrays.asList(sfo);
    JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
    JavacTask ct = (JavacTask)tool.getTask(null, null, null, null, null, files);
    Iterable<? extends CompilationUnitTree> compUnits = ct.parse();
    CompilationUnitTree cu = compUnits.iterator().next();
    ClassTree cdef = (ClassTree)cu.getTypeDecls().get(0);
    JCVariableDecl vdef = (JCVariableDecl)cdef.getMembers().get(0);
    TreePath path = TreePath.getPath(cu, vdef.init);
    Trees.instance(ct).getScope(path);
}
 

import com.sun.source.util.JavacTask; //导入方法依赖的package包/类
void run() throws Exception {
    Context context = new Context();
    JavacFileManager.preRegister(context);
    final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
    JavacTask ct = (JavacTask)tool.getTask(null, null, null, null, null, Arrays.asList(new JavaSource()));
    Iterable<? extends CompilationUnitTree> elements = ct.parse();
    ct.analyze();
    Assert.check(elements.iterator().hasNext());
    JCTree topLevel = (JCTree)elements.iterator().next();
    new TreeScanner() {
        @Override
        public void visitReference(JCMemberReference tree) {
            Assert.check(tree.getOverloadKind() != null);
        }
    }.scan(topLevel);
}
 

import com.sun.source.util.JavacTask; //导入方法依赖的package包/类
public boolean parseType( String fqn, List<CompilationUnitTree> trees, DiagnosticCollector<JavaFileObject> errorHandler )
{
  init();

  Pair<JavaFileObject, String> pair = findJavaSource( fqn, errorHandler );
  if( pair == null )
  {
    return false;
  }

  StringWriter errors = new StringWriter();
  JavacTask javacTask = (JavacTask)_javac.getTask( errors, _gfm, errorHandler, Collections.singletonList( "-proc:none" ), null, Collections.singletonList( pair.getFirst() ) );
  try
  {
    initTypeProcessing( javacTask, Collections.singleton( fqn ) );
    Iterable<? extends CompilationUnitTree> iterable = javacTask.parse();
    for( CompilationUnitTree x : iterable )
    {
      trees.add( x );
    }
    return true;
  }
  catch( Exception e )
  {
    return false;
  }
}
 

import com.sun.source.util.JavacTask; //导入方法依赖的package包/类
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();
}