langtools/src/jdk.compiler/share/classes/com/sun/tools/javap/JavapTask.java
changeset 30848 c275389a3680
parent 30842 b02fa8bb730c
parent 30847 9385b9c8506b
child 30849 fcfa8eb95c23
--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/javap/JavapTask.java	Thu May 28 16:13:55 2015 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1068 +0,0 @@
-/*
- * Copyright (c) 2007, 2014, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package com.sun.tools.javap;
-
-import java.io.EOFException;
-import java.io.FileNotFoundException;
-import java.io.FilterInputStream;
-import java.io.InputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.io.PrintWriter;
-import java.io.Reader;
-import java.io.StringWriter;
-import java.io.Writer;
-import java.net.URI;
-import java.net.URISyntaxException;
-import java.net.URL;
-import java.net.URLConnection;
-import java.nio.file.NoSuchFileException;
-import java.security.DigestInputStream;
-import java.security.MessageDigest;
-import java.security.NoSuchAlgorithmException;
-import java.text.MessageFormat;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.EnumSet;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Locale;
-import java.util.Map;
-import java.util.MissingResourceException;
-import java.util.Objects;
-import java.util.ResourceBundle;
-
-import javax.lang.model.element.Modifier;
-import javax.lang.model.element.NestingKind;
-import javax.tools.Diagnostic;
-import javax.tools.DiagnosticListener;
-import javax.tools.JavaFileManager;
-import javax.tools.JavaFileObject;
-import javax.tools.StandardJavaFileManager;
-import javax.tools.StandardLocation;
-
-import com.sun.tools.classfile.*;
-import com.sun.tools.javac.util.DefinedBy;
-import com.sun.tools.javac.util.DefinedBy.Api;
-
-/**
- *  "Main" class for javap, normally accessed from the command line
- *  via Main, or from JSR199 via DisassemblerTool.
- *
- *  <p><b>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.</b>
- */
-public class JavapTask implements DisassemblerTool.DisassemblerTask, Messages {
-    public class BadArgs extends Exception {
-        static final long serialVersionUID = 8765093759964640721L;
-        BadArgs(String key, Object... args) {
-            super(JavapTask.this.getMessage(key, args));
-            this.key = key;
-            this.args = args;
-        }
-
-        BadArgs showUsage(boolean b) {
-            showUsage = b;
-            return this;
-        }
-
-        final String key;
-        final Object[] args;
-        boolean showUsage;
-    }
-
-    static abstract class Option {
-        Option(boolean hasArg, String... aliases) {
-            this.hasArg = hasArg;
-            this.aliases = aliases;
-        }
-
-        boolean matches(String opt) {
-            for (String a: aliases) {
-                if (a.equals(opt))
-                    return true;
-            }
-            return false;
-        }
-
-        boolean ignoreRest() {
-            return false;
-        }
-
-        abstract void process(JavapTask task, String opt, String arg) throws BadArgs;
-
-        final boolean hasArg;
-        final String[] aliases;
-    }
-
-    static final Option[] recognizedOptions = {
-
-        new Option(false, "-help", "--help", "-?") {
-            void process(JavapTask task, String opt, String arg) {
-                task.options.help = true;
-            }
-        },
-
-        new Option(false, "-version") {
-            void process(JavapTask task, String opt, String arg) {
-                task.options.version = true;
-            }
-        },
-
-        new Option(false, "-fullversion") {
-            void process(JavapTask task, String opt, String arg) {
-                task.options.fullVersion = true;
-            }
-        },
-
-        new Option(false, "-v", "-verbose", "-all") {
-            void process(JavapTask task, String opt, String arg) {
-                task.options.verbose = true;
-                task.options.showDescriptors = true;
-                task.options.showFlags = true;
-                task.options.showAllAttrs = true;
-            }
-        },
-
-        new Option(false, "-l") {
-            void process(JavapTask task, String opt, String arg) {
-                task.options.showLineAndLocalVariableTables = true;
-            }
-        },
-
-        new Option(false, "-public") {
-            void process(JavapTask task, String opt, String arg) {
-                task.options.accessOptions.add(opt);
-                task.options.showAccess = AccessFlags.ACC_PUBLIC;
-            }
-        },
-
-        new Option(false, "-protected") {
-            void process(JavapTask task, String opt, String arg) {
-                task.options.accessOptions.add(opt);
-                task.options.showAccess = AccessFlags.ACC_PROTECTED;
-            }
-        },
-
-        new Option(false, "-package") {
-            void process(JavapTask task, String opt, String arg) {
-                task.options.accessOptions.add(opt);
-                task.options.showAccess = 0;
-            }
-        },
-
-        new Option(false, "-p", "-private") {
-            void process(JavapTask task, String opt, String arg) {
-                if (!task.options.accessOptions.contains("-p") &&
-                        !task.options.accessOptions.contains("-private")) {
-                    task.options.accessOptions.add(opt);
-                }
-                task.options.showAccess = AccessFlags.ACC_PRIVATE;
-            }
-        },
-
-        new Option(false, "-c") {
-            void process(JavapTask task, String opt, String arg) {
-                task.options.showDisassembled = true;
-            }
-        },
-
-        new Option(false, "-s") {
-            void process(JavapTask task, String opt, String arg) {
-                task.options.showDescriptors = true;
-            }
-        },
-
-        new Option(false, "-sysinfo") {
-            void process(JavapTask task, String opt, String arg) {
-                task.options.sysInfo = true;
-            }
-        },
-
-        new Option(false, "-XDdetails") {
-            void process(JavapTask task, String opt, String arg) {
-                task.options.details = EnumSet.allOf(InstructionDetailWriter.Kind.class);
-            }
-
-        },
-
-        new Option(false, "-XDdetails:") {
-            @Override
-            boolean matches(String opt) {
-                int sep = opt.indexOf(":");
-                return sep != -1 && super.matches(opt.substring(0, sep + 1));
-            }
-
-            void process(JavapTask task, String opt, String arg) throws BadArgs {
-                int sep = opt.indexOf(":");
-                for (String v: opt.substring(sep + 1).split("[,: ]+")) {
-                    if (!handleArg(task, v))
-                        throw task.new BadArgs("err.invalid.arg.for.option", v);
-                }
-            }
-
-            boolean handleArg(JavapTask task, String arg) {
-                if (arg.length() == 0)
-                    return true;
-
-                if (arg.equals("all")) {
-                    task.options.details = EnumSet.allOf(InstructionDetailWriter.Kind.class);
-                    return true;
-                }
-
-                boolean on = true;
-                if (arg.startsWith("-")) {
-                    on = false;
-                    arg = arg.substring(1);
-                }
-
-                for (InstructionDetailWriter.Kind k: InstructionDetailWriter.Kind.values()) {
-                    if (arg.equalsIgnoreCase(k.option)) {
-                        if (on)
-                            task.options.details.add(k);
-                        else
-                            task.options.details.remove(k);
-                        return true;
-                    }
-                }
-                return false;
-            }
-        },
-
-        new Option(false, "-constants") {
-            void process(JavapTask task, String opt, String arg) {
-                task.options.showConstants = true;
-            }
-        },
-
-        new Option(false, "-XDinner") {
-            void process(JavapTask task, String opt, String arg) {
-                task.options.showInnerClasses = true;
-            }
-        },
-
-        new Option(false, "-XDindent:") {
-            @Override
-            boolean matches(String opt) {
-                int sep = opt.indexOf(":");
-                return sep != -1 && super.matches(opt.substring(0, sep + 1));
-            }
-
-            void process(JavapTask task, String opt, String arg) throws BadArgs {
-                int sep = opt.indexOf(":");
-                try {
-                    int i = Integer.valueOf(opt.substring(sep + 1));
-                    if (i > 0) // silently ignore invalid values
-                        task.options.indentWidth = i;
-                } catch (NumberFormatException e) {
-                }
-            }
-        },
-
-        new Option(false, "-XDtab:") {
-            @Override
-            boolean matches(String opt) {
-                int sep = opt.indexOf(":");
-                return sep != -1 && super.matches(opt.substring(0, sep + 1));
-            }
-
-            void process(JavapTask task, String opt, String arg) throws BadArgs {
-                int sep = opt.indexOf(":");
-                try {
-                    int i = Integer.valueOf(opt.substring(sep + 1));
-                    if (i > 0) // silently ignore invalid values
-                        task.options.tabColumn = i;
-                } catch (NumberFormatException e) {
-                }
-            }
-        }
-
-    };
-
-    public JavapTask() {
-        context = new Context();
-        context.put(Messages.class, this);
-        options = Options.instance(context);
-        attributeFactory = new Attribute.Factory();
-    }
-
-    public JavapTask(Writer out,
-            JavaFileManager fileManager,
-            DiagnosticListener<? super JavaFileObject> diagnosticListener) {
-        this();
-        this.log = getPrintWriterForWriter(out);
-        this.fileManager = fileManager;
-        this.diagnosticListener = diagnosticListener;
-    }
-
-    public JavapTask(Writer out,
-            JavaFileManager fileManager,
-            DiagnosticListener<? super JavaFileObject> diagnosticListener,
-            Iterable<String> options,
-            Iterable<String> classes) {
-        this(out, fileManager, diagnosticListener);
-
-        this.classes = new ArrayList<>();
-        for (String classname: classes) {
-            Objects.requireNonNull(classname);
-            this.classes.add(classname);
-        }
-
-        try {
-            if (options != null)
-                handleOptions(options, false);
-        } catch (BadArgs e) {
-            throw new IllegalArgumentException(e.getMessage());
-        }
-    }
-
-    public void setLocale(Locale locale) {
-        if (locale == null)
-            locale = Locale.getDefault();
-        task_locale = locale;
-    }
-
-    public void setLog(Writer log) {
-        this.log = getPrintWriterForWriter(log);
-    }
-
-    public void setLog(OutputStream s) {
-        setLog(getPrintWriterForStream(s));
-    }
-
-    private static PrintWriter getPrintWriterForStream(OutputStream s) {
-        return new PrintWriter(s == null ? System.err : s, true);
-    }
-
-    private static PrintWriter getPrintWriterForWriter(Writer w) {
-        if (w == null)
-            return getPrintWriterForStream(null);
-        else if (w instanceof PrintWriter)
-            return (PrintWriter) w;
-        else
-            return new PrintWriter(w, true);
-    }
-
-    public void setDiagnosticListener(DiagnosticListener<? super JavaFileObject> dl) {
-        diagnosticListener = dl;
-    }
-
-    public void setDiagnosticListener(OutputStream s) {
-        setDiagnosticListener(getDiagnosticListenerForStream(s));
-    }
-
-    private DiagnosticListener<JavaFileObject> getDiagnosticListenerForStream(OutputStream s) {
-        return getDiagnosticListenerForWriter(getPrintWriterForStream(s));
-    }
-
-    private DiagnosticListener<JavaFileObject> getDiagnosticListenerForWriter(Writer w) {
-        final PrintWriter pw = getPrintWriterForWriter(w);
-        return new DiagnosticListener<JavaFileObject> () {
-            @DefinedBy(Api.COMPILER)
-            public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
-                switch (diagnostic.getKind()) {
-                    case ERROR:
-                        pw.print(getMessage("err.prefix"));
-                        break;
-                    case WARNING:
-                        pw.print(getMessage("warn.prefix"));
-                        break;
-                    case NOTE:
-                        pw.print(getMessage("note.prefix"));
-                        break;
-                }
-                pw.print(" ");
-                pw.println(diagnostic.getMessage(null));
-            }
-        };
-    }
-
-    /** Result codes.
-     */
-    static final int
-        EXIT_OK = 0,        // Compilation completed with no errors.
-        EXIT_ERROR = 1,     // Completed but reported errors.
-        EXIT_CMDERR = 2,    // Bad command-line arguments
-        EXIT_SYSERR = 3,    // System error or resource exhaustion.
-        EXIT_ABNORMAL = 4;  // Compiler terminated abnormally
-
-    int run(String[] args) {
-        try {
-            try {
-                handleOptions(args);
-
-                // the following gives consistent behavior with javac
-                if (classes == null || classes.size() == 0) {
-                    if (options.help || options.version || options.fullVersion)
-                        return EXIT_OK;
-                    else
-                        return EXIT_CMDERR;
-                }
-
-                return run();
-            } finally {
-                if (defaultFileManager != null) {
-                    try {
-                        defaultFileManager.close();
-                        defaultFileManager = null;
-                    } catch (IOException e) {
-                        throw new InternalError(e);
-                    }
-                }
-            }
-        } catch (BadArgs e) {
-            reportError(e.key, e.args);
-            if (e.showUsage) {
-                printLines(getMessage("main.usage.summary", progname));
-            }
-            return EXIT_CMDERR;
-        } catch (InternalError e) {
-            Object[] e_args;
-            if (e.getCause() == null)
-                e_args = e.args;
-            else {
-                e_args = new Object[e.args.length + 1];
-                e_args[0] = e.getCause();
-                System.arraycopy(e.args, 0, e_args, 1, e.args.length);
-            }
-            reportError("err.internal.error", e_args);
-            return EXIT_ABNORMAL;
-        } finally {
-            log.flush();
-        }
-    }
-
-    public void handleOptions(String[] args) throws BadArgs {
-        handleOptions(Arrays.asList(args), true);
-    }
-
-    private void handleOptions(Iterable<String> args, boolean allowClasses) throws BadArgs {
-        if (log == null) {
-            log = getPrintWriterForStream(System.out);
-            if (diagnosticListener == null)
-              diagnosticListener = getDiagnosticListenerForStream(System.err);
-        } else {
-            if (diagnosticListener == null)
-              diagnosticListener = getDiagnosticListenerForWriter(log);
-        }
-
-
-        if (fileManager == null)
-            fileManager = getDefaultFileManager(diagnosticListener, log);
-
-        Iterator<String> iter = args.iterator();
-        boolean noArgs = !iter.hasNext();
-
-        while (iter.hasNext()) {
-            String arg = iter.next();
-            if (arg.startsWith("-"))
-                handleOption(arg, iter);
-            else if (allowClasses) {
-                if (classes == null)
-                    classes = new ArrayList<>();
-                classes.add(arg);
-                while (iter.hasNext())
-                    classes.add(iter.next());
-            } else
-                throw new BadArgs("err.unknown.option", arg).showUsage(true);
-        }
-
-        if (options.accessOptions.size() > 1) {
-            StringBuilder sb = new StringBuilder();
-            for (String opt: options.accessOptions) {
-                if (sb.length() > 0)
-                    sb.append(" ");
-                sb.append(opt);
-            }
-            throw new BadArgs("err.incompatible.options", sb);
-        }
-
-        if ((classes == null || classes.size() == 0) &&
-                !(noArgs || options.help || options.version || options.fullVersion)) {
-            throw new BadArgs("err.no.classes.specified");
-        }
-
-        if (noArgs || options.help)
-            showHelp();
-
-        if (options.version || options.fullVersion)
-            showVersion(options.fullVersion);
-    }
-
-    private void handleOption(String name, Iterator<String> rest) throws BadArgs {
-        for (Option o: recognizedOptions) {
-            if (o.matches(name)) {
-                if (o.hasArg) {
-                    if (rest.hasNext())
-                        o.process(this, name, rest.next());
-                    else
-                        throw new BadArgs("err.missing.arg", name).showUsage(true);
-                } else
-                    o.process(this, name, null);
-
-                if (o.ignoreRest()) {
-                    while (rest.hasNext())
-                        rest.next();
-                }
-                return;
-            }
-        }
-
-        try {
-            if (fileManager.handleOption(name, rest))
-                return;
-        } catch (IllegalArgumentException e) {
-            throw new BadArgs("err.invalid.use.of.option", name).showUsage(true);
-        }
-
-        throw new BadArgs("err.unknown.option", name).showUsage(true);
-    }
-
-    public Boolean call() {
-        return run() == 0;
-    }
-
-    public int run() {
-        if (classes == null || classes.isEmpty()) {
-            return EXIT_ERROR;
-        }
-
-        context.put(PrintWriter.class, log);
-        ClassWriter classWriter = ClassWriter.instance(context);
-        SourceWriter sourceWriter = SourceWriter.instance(context);
-        sourceWriter.setFileManager(fileManager);
-
-        int result = EXIT_OK;
-
-        for (String className: classes) {
-            try {
-                result = writeClass(classWriter, className);
-            } catch (ConstantPoolException e) {
-                reportError("err.bad.constant.pool", className, e.getLocalizedMessage());
-                result = EXIT_ERROR;
-            } catch (EOFException e) {
-                reportError("err.end.of.file", className);
-                result = EXIT_ERROR;
-            } catch (FileNotFoundException | NoSuchFileException e) {
-                reportError("err.file.not.found", e.getLocalizedMessage());
-                result = EXIT_ERROR;
-            } catch (IOException e) {
-                //e.printStackTrace();
-                Object msg = e.getLocalizedMessage();
-                if (msg == null) {
-                    msg = e;
-                }
-                reportError("err.ioerror", className, msg);
-                result = EXIT_ERROR;
-            } catch (OutOfMemoryError e) {
-                reportError("err.nomem");
-                result = EXIT_ERROR;
-            } catch (Throwable t) {
-                StringWriter sw = new StringWriter();
-                PrintWriter pw = new PrintWriter(sw);
-                t.printStackTrace(pw);
-                pw.close();
-                reportError("err.crash", t.toString(), sw.toString());
-                result = EXIT_ABNORMAL;
-            }
-        }
-
-        return result;
-    }
-
-    protected int writeClass(ClassWriter classWriter, String className)
-            throws IOException, ConstantPoolException {
-        JavaFileObject fo = open(className);
-        if (fo == null) {
-            reportError("err.class.not.found", className);
-            return EXIT_ERROR;
-        }
-
-        ClassFileInfo cfInfo = read(fo);
-        if (!className.endsWith(".class")) {
-            String cfName = cfInfo.cf.getName();
-            if (!cfName.replaceAll("[/$]", ".").equals(className.replaceAll("[/$]", "."))) {
-                reportWarning("warn.unexpected.class", className, cfName.replace('/', '.'));
-            }
-        }
-        write(cfInfo);
-
-        if (options.showInnerClasses) {
-            ClassFile cf = cfInfo.cf;
-            Attribute a = cf.getAttribute(Attribute.InnerClasses);
-            if (a instanceof InnerClasses_attribute) {
-                InnerClasses_attribute inners = (InnerClasses_attribute) a;
-                try {
-                    int result = EXIT_OK;
-                    for (int i = 0; i < inners.classes.length; i++) {
-                        int outerIndex = inners.classes[i].outer_class_info_index;
-                        ConstantPool.CONSTANT_Class_info outerClassInfo = cf.constant_pool.getClassInfo(outerIndex);
-                        String outerClassName = outerClassInfo.getName();
-                        if (outerClassName.equals(cf.getName())) {
-                            int innerIndex = inners.classes[i].inner_class_info_index;
-                            ConstantPool.CONSTANT_Class_info innerClassInfo = cf.constant_pool.getClassInfo(innerIndex);
-                            String innerClassName = innerClassInfo.getName();
-                            classWriter.println("// inner class " + innerClassName.replaceAll("[/$]", "."));
-                            classWriter.println();
-                            result = writeClass(classWriter, innerClassName);
-                            if (result != EXIT_OK) return result;
-                        }
-                    }
-                    return result;
-                } catch (ConstantPoolException e) {
-                    reportError("err.bad.innerclasses.attribute", className);
-                    return EXIT_ERROR;
-                }
-            } else if (a != null) {
-                reportError("err.bad.innerclasses.attribute", className);
-                return EXIT_ERROR;
-            }
-        }
-
-        return EXIT_OK;
-    }
-
-    protected JavaFileObject open(String className) throws IOException {
-        // for compatibility, first see if it is a class name
-        JavaFileObject fo = getClassFileObject(className);
-        if (fo != null)
-            return fo;
-
-        // see if it is an inner class, by replacing dots to $, starting from the right
-        String cn = className;
-        int lastDot;
-        while ((lastDot = cn.lastIndexOf(".")) != -1) {
-            cn = cn.substring(0, lastDot) + "$" + cn.substring(lastDot + 1);
-            fo = getClassFileObject(cn);
-            if (fo != null)
-                return fo;
-        }
-
-        if (!className.endsWith(".class"))
-            return null;
-
-        if (fileManager instanceof StandardJavaFileManager) {
-            StandardJavaFileManager sfm = (StandardJavaFileManager) fileManager;
-            try {
-                fo = sfm.getJavaFileObjects(className).iterator().next();
-                if (fo != null && fo.getLastModified() != 0) {
-                    return fo;
-                }
-            } catch (IllegalArgumentException ignore) {
-            }
-        }
-
-        // see if it is a URL, and if so, wrap it in just enough of a JavaFileObject
-        // to suit javap's needs
-        if (className.matches("^[A-Za-z]+:.*")) {
-            try {
-                final URI uri = new URI(className);
-                final URL url = uri.toURL();
-                final URLConnection conn = url.openConnection();
-                conn.setUseCaches(false);
-                return new JavaFileObject() {
-                    @DefinedBy(Api.COMPILER)
-                    public Kind getKind() {
-                        return JavaFileObject.Kind.CLASS;
-                    }
-
-                    @DefinedBy(Api.COMPILER)
-                    public boolean isNameCompatible(String simpleName, Kind kind) {
-                        throw new UnsupportedOperationException();
-                    }
-
-                    @DefinedBy(Api.COMPILER)
-                    public NestingKind getNestingKind() {
-                        throw new UnsupportedOperationException();
-                    }
-
-                    @DefinedBy(Api.COMPILER)
-                    public Modifier getAccessLevel() {
-                        throw new UnsupportedOperationException();
-                    }
-
-                    @DefinedBy(Api.COMPILER)
-                    public URI toUri() {
-                        return uri;
-                    }
-
-                    @DefinedBy(Api.COMPILER)
-                    public String getName() {
-                        return uri.toString();
-                    }
-
-                    @DefinedBy(Api.COMPILER)
-                    public InputStream openInputStream() throws IOException {
-                        return conn.getInputStream();
-                    }
-
-                    @DefinedBy(Api.COMPILER)
-                    public OutputStream openOutputStream() throws IOException {
-                        throw new UnsupportedOperationException();
-                    }
-
-                    @DefinedBy(Api.COMPILER)
-                    public Reader openReader(boolean ignoreEncodingErrors) throws IOException {
-                        throw new UnsupportedOperationException();
-                    }
-
-                    @DefinedBy(Api.COMPILER)
-                    public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
-                        throw new UnsupportedOperationException();
-                    }
-
-                    @DefinedBy(Api.COMPILER)
-                    public Writer openWriter() throws IOException {
-                        throw new UnsupportedOperationException();
-                    }
-
-                    @DefinedBy(Api.COMPILER)
-                    public long getLastModified() {
-                        return conn.getLastModified();
-                    }
-
-                    @DefinedBy(Api.COMPILER)
-                    public boolean delete() {
-                        throw new UnsupportedOperationException();
-                    }
-
-                };
-            } catch (URISyntaxException | IOException ignore) {
-            }
-        }
-
-        return null;
-    }
-
-    public static class ClassFileInfo {
-        ClassFileInfo(JavaFileObject fo, ClassFile cf, byte[] digest, int size) {
-            this.fo = fo;
-            this.cf = cf;
-            this.digest = digest;
-            this.size = size;
-        }
-        public final JavaFileObject fo;
-        public final ClassFile cf;
-        public final byte[] digest;
-        public final int size;
-    }
-
-    public ClassFileInfo read(JavaFileObject fo) throws IOException, ConstantPoolException {
-        InputStream in = fo.openInputStream();
-        try {
-            SizeInputStream sizeIn = null;
-            MessageDigest md  = null;
-            if (options.sysInfo || options.verbose) {
-                try {
-                    md = MessageDigest.getInstance("MD5");
-                } catch (NoSuchAlgorithmException ignore) {
-                }
-                in = new DigestInputStream(in, md);
-                in = sizeIn = new SizeInputStream(in);
-            }
-
-            ClassFile cf = ClassFile.read(in, attributeFactory);
-            byte[] digest = (md == null) ? null : md.digest();
-            int size = (sizeIn == null) ? -1 : sizeIn.size();
-            return new ClassFileInfo(fo, cf, digest, size);
-        } finally {
-            in.close();
-        }
-    }
-
-    public void write(ClassFileInfo info) {
-        ClassWriter classWriter = ClassWriter.instance(context);
-        if (options.sysInfo || options.verbose) {
-            classWriter.setFile(info.fo.toUri());
-            classWriter.setLastModified(info.fo.getLastModified());
-            classWriter.setDigest("MD5", info.digest);
-            classWriter.setFileSize(info.size);
-        }
-
-        classWriter.write(info.cf);
-    }
-
-    protected void setClassFile(ClassFile classFile) {
-        ClassWriter classWriter = ClassWriter.instance(context);
-        classWriter.setClassFile(classFile);
-    }
-
-    protected void setMethod(Method enclosingMethod) {
-        ClassWriter classWriter = ClassWriter.instance(context);
-        classWriter.setMethod(enclosingMethod);
-    }
-
-    protected void write(Attribute value) {
-        AttributeWriter attrWriter = AttributeWriter.instance(context);
-        ClassWriter classWriter = ClassWriter.instance(context);
-        ClassFile cf = classWriter.getClassFile();
-        attrWriter.write(cf, value, cf.constant_pool);
-    }
-
-    protected void write(Attributes attrs) {
-        AttributeWriter attrWriter = AttributeWriter.instance(context);
-        ClassWriter classWriter = ClassWriter.instance(context);
-        ClassFile cf = classWriter.getClassFile();
-        attrWriter.write(cf, attrs, cf.constant_pool);
-    }
-
-    protected void write(ConstantPool constant_pool) {
-        ConstantWriter constantWriter = ConstantWriter.instance(context);
-        constantWriter.writeConstantPool(constant_pool);
-    }
-
-    protected void write(ConstantPool constant_pool, int value) {
-        ConstantWriter constantWriter = ConstantWriter.instance(context);
-        constantWriter.write(value);
-    }
-
-    protected void write(ConstantPool.CPInfo value) {
-        ConstantWriter constantWriter = ConstantWriter.instance(context);
-        constantWriter.println(value);
-    }
-
-    protected void write(Field value) {
-        ClassWriter classWriter = ClassWriter.instance(context);
-        classWriter.writeField(value);
-    }
-
-    protected void write(Method value) {
-        ClassWriter classWriter = ClassWriter.instance(context);
-        classWriter.writeMethod(value);
-    }
-
-    private JavaFileManager getDefaultFileManager(final DiagnosticListener<? super JavaFileObject> dl, PrintWriter log) {
-        if (defaultFileManager == null)
-            defaultFileManager = JavapFileManager.create(dl, log);
-        return defaultFileManager;
-    }
-
-    private JavaFileObject getClassFileObject(String className) throws IOException {
-        try {
-            JavaFileObject fo;
-            fo = fileManager.getJavaFileForInput(StandardLocation.PLATFORM_CLASS_PATH, className, JavaFileObject.Kind.CLASS);
-            if (fo == null)
-                fo = fileManager.getJavaFileForInput(StandardLocation.CLASS_PATH, className, JavaFileObject.Kind.CLASS);
-            return fo;
-        } catch (IllegalArgumentException e) {
-            return null;
-        }
-    }
-
-    private void showHelp() {
-        printLines(getMessage("main.usage", progname));
-        for (Option o: recognizedOptions) {
-            String name = o.aliases[0].substring(1); // there must always be at least one name
-            if (name.startsWith("X") || name.equals("fullversion") || name.equals("h") || name.equals("verify"))
-                continue;
-            printLines(getMessage("main.opt." + name));
-        }
-        String[] fmOptions = { "-classpath", "-cp", "-bootclasspath" };
-        for (String o: fmOptions) {
-            if (fileManager.isSupportedOption(o) == -1)
-                continue;
-            String name = o.substring(1);
-            printLines(getMessage("main.opt." + name));
-        }
-
-    }
-
-    private void showVersion(boolean full) {
-        printLines(version(full ? "full" : "release"));
-    }
-
-    private void printLines(String msg) {
-        log.println(msg.replace("\n", nl));
-    }
-
-    private static final String nl = System.getProperty("line.separator");
-
-    private static final String versionRBName = "com.sun.tools.javap.resources.version";
-    private static ResourceBundle versionRB;
-
-    private String version(String key) {
-        // key=version:  mm.nn.oo[-milestone]
-        // key=full:     mm.mm.oo[-milestone]-build
-        if (versionRB == null) {
-            try {
-                versionRB = ResourceBundle.getBundle(versionRBName);
-            } catch (MissingResourceException e) {
-                return getMessage("version.resource.missing", System.getProperty("java.version"));
-            }
-        }
-        try {
-            return versionRB.getString(key);
-        }
-        catch (MissingResourceException e) {
-            return getMessage("version.unknown", System.getProperty("java.version"));
-        }
-    }
-
-    private void reportError(String key, Object... args) {
-        diagnosticListener.report(createDiagnostic(Diagnostic.Kind.ERROR, key, args));
-    }
-
-    private void reportNote(String key, Object... args) {
-        diagnosticListener.report(createDiagnostic(Diagnostic.Kind.NOTE, key, args));
-    }
-
-    private void reportWarning(String key, Object... args) {
-        diagnosticListener.report(createDiagnostic(Diagnostic.Kind.WARNING, key, args));
-    }
-
-    private Diagnostic<JavaFileObject> createDiagnostic(
-            final Diagnostic.Kind kind, final String key, final Object... args) {
-        return new Diagnostic<JavaFileObject>() {
-            @DefinedBy(Api.COMPILER)
-            public Kind getKind() {
-                return kind;
-            }
-
-            @DefinedBy(Api.COMPILER)
-            public JavaFileObject getSource() {
-                return null;
-            }
-
-            @DefinedBy(Api.COMPILER)
-            public long getPosition() {
-                return Diagnostic.NOPOS;
-            }
-
-            @DefinedBy(Api.COMPILER)
-            public long getStartPosition() {
-                return Diagnostic.NOPOS;
-            }
-
-            @DefinedBy(Api.COMPILER)
-            public long getEndPosition() {
-                return Diagnostic.NOPOS;
-            }
-
-            @DefinedBy(Api.COMPILER)
-            public long getLineNumber() {
-                return Diagnostic.NOPOS;
-            }
-
-            @DefinedBy(Api.COMPILER)
-            public long getColumnNumber() {
-                return Diagnostic.NOPOS;
-            }
-
-            @DefinedBy(Api.COMPILER)
-            public String getCode() {
-                return key;
-            }
-
-            @DefinedBy(Api.COMPILER)
-            public String getMessage(Locale locale) {
-                return JavapTask.this.getMessage(locale, key, args);
-            }
-
-            @Override
-            public String toString() {
-                return getClass().getName() + "[key=" + key + ",args=" + Arrays.asList(args) + "]";
-            }
-
-        };
-
-    }
-
-    public String getMessage(String key, Object... args) {
-        return getMessage(task_locale, key, args);
-    }
-
-    public String getMessage(Locale locale, String key, Object... args) {
-        if (bundles == null) {
-            // could make this a HashMap<Locale,SoftReference<ResourceBundle>>
-            // and for efficiency, keep a hard reference to the bundle for the task
-            // locale
-            bundles = new HashMap<>();
-        }
-
-        if (locale == null)
-            locale = Locale.getDefault();
-
-        ResourceBundle b = bundles.get(locale);
-        if (b == null) {
-            try {
-                b = ResourceBundle.getBundle("com.sun.tools.javap.resources.javap", locale);
-                bundles.put(locale, b);
-            } catch (MissingResourceException e) {
-                throw new InternalError("Cannot find javap resource bundle for locale " + locale);
-            }
-        }
-
-        try {
-            return MessageFormat.format(b.getString(key), args);
-        } catch (MissingResourceException e) {
-            throw new InternalError(e, key);
-        }
-    }
-
-    protected Context context;
-    JavaFileManager fileManager;
-    JavaFileManager defaultFileManager;
-    PrintWriter log;
-    DiagnosticListener<? super JavaFileObject> diagnosticListener;
-    List<String> classes;
-    Options options;
-    //ResourceBundle bundle;
-    Locale task_locale;
-    Map<Locale, ResourceBundle> bundles;
-    protected Attribute.Factory attributeFactory;
-
-    private static final String progname = "javap";
-
-    private static class SizeInputStream extends FilterInputStream {
-        SizeInputStream(InputStream in) {
-            super(in);
-        }
-
-        int size() {
-            return size;
-        }
-
-        @Override
-        public int read(byte[] buf, int offset, int length) throws IOException {
-            int n = super.read(buf, offset, length);
-            if (n > 0)
-                size += n;
-            return n;
-        }
-
-        @Override
-        public int read() throws IOException {
-            int b = super.read();
-            size += 1;
-            return b;
-        }
-
-        private int size;
-    }
-}