jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/api/ClientCodeWrapper.java@f85d980faaf8 (annotated)

src/share/classes/com/sun/tools/javac/api/ClientCodeWrapper.java@f85d980faaf8 (annotated)

src/share/classes/com/sun/tools/javac/api/ClientCodeWrapper.java

Wed, 31 Aug 2011 15:39:00 -0700

author: jjg
date: Wed, 31 Aug 2011 15:39:00 -0700
changeset 1073: f85d980faaf8
parent 946: 31e5cfc5a990
child 1077: ec27e5befa53
permissions: -rw-r--r--

7074416: Regression: JSR199: javac doesn't unwrap clientcodewrapper objects
Reviewed-by: mcimadamore

 /*
  * Copyright (c) 2011, 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.javac.api;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.io.Reader;
 import java.io.Writer;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
 import javax.lang.model.element.NestingKind;
 import javax.tools.Diagnostic;
 import javax.tools.FileObject;
 import javax.tools.JavaFileManager;
 import javax.tools.JavaFileManager.Location;
 import javax.tools.JavaFileObject;
 import com.sun.source.util.TaskEvent;
 import com.sun.source.util.TaskListener;
 import com.sun.tools.javac.util.ClientCodeException;
 import com.sun.tools.javac.util.Context;
 import com.sun.tools.javac.util.JCDiagnostic;
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 import javax.lang.model.element.Modifier;
 import javax.tools.DiagnosticListener;
 import javax.tools.JavaFileObject.Kind;
 /**
  *  Wrap objects to enable unchecked exceptions to be caught and handled.
  *
  *  For each method, exceptions are handled as follows:
  *  <ul>
  *  <li>Checked exceptions are left alone and propogate upwards in the
  *      obvious way, since they are an expected aspect of the method's
  *      specification.
  *  <li>Unchecked exceptions which have already been caught and wrapped in
  *      ClientCodeException are left alone to continue propogating upwards.
  *  <li>All other unchecked exceptions (i.e. subtypes of RuntimeException
  *      and Error) and caught, and rethrown as a ClientCodeException with
  *      its cause set to the original exception.
  *  </ul>
  *
  *  The intent is that ClientCodeException can be caught at an appropriate point
  *  in the program and can be distinguished from any unanticipated unchecked
  *  exceptions arising in the main body of the code (i.e. bugs.) When the
  *  ClientCodeException has been caught, either a suitable message can be
  *  generated, or if appropriate, the original cause can be rethrown.
  *
  *  <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 ClientCodeWrapper {
     @Retention(RetentionPolicy.RUNTIME)
     @Target(ElementType.TYPE)
     public @interface Trusted { }
     public static ClientCodeWrapper instance(Context context) {
         ClientCodeWrapper instance = context.get(ClientCodeWrapper.class);
         if (instance == null)
             instance = new ClientCodeWrapper(context);
         return instance;
     }
     /**
      * A map to cache the results of whether or not a specific classes can
      * be "trusted", and thus does not need to be wrapped.
      */
     Map<Class<?>, Boolean> trustedClasses;
     protected ClientCodeWrapper(Context context) {
         trustedClasses = new HashMap<Class<?>, Boolean>();
     }
     public JavaFileManager wrap(JavaFileManager fm) {
         if (isTrusted(fm))
             return fm;
         return new WrappedJavaFileManager(fm);
     }
     public FileObject wrap(FileObject fo) {
         if (isTrusted(fo))
             return fo;
         return new WrappedFileObject(fo);
     }
     FileObject unwrap(FileObject fo) {
         if (fo instanceof WrappedFileObject)
             return ((WrappedFileObject) fo).clientFileObject;
         else
             return fo;
     }
     public JavaFileObject wrap(JavaFileObject fo) {
         if (isTrusted(fo))
             return fo;
         return new WrappedJavaFileObject(fo);
     }
     public Iterable<JavaFileObject> wrapJavaFileObjects(Iterable<? extends JavaFileObject> list) {
         List<JavaFileObject> wrapped = new ArrayList<JavaFileObject>();
         for (JavaFileObject fo : list)
             wrapped.add(wrap(fo));
         return Collections.unmodifiableList(wrapped);
     }
     JavaFileObject unwrap(JavaFileObject fo) {
         if (fo instanceof WrappedJavaFileObject)
             return ((JavaFileObject) ((WrappedJavaFileObject) fo).clientFileObject);
         else
             return fo;
     }
     <T /*super JavaFileOject*/> DiagnosticListener<T> wrap(DiagnosticListener<T> dl) {
         if (isTrusted(dl))
             return dl;
         return new WrappedDiagnosticListener<T>(dl);
     }
     TaskListener wrap(TaskListener tl) {
         if (isTrusted(tl))
             return tl;
         return new WrappedTaskListener(tl);
     }
     @SuppressWarnings("unchecked")
     private <T> Diagnostic<T> unwrap(final Diagnostic<T> diagnostic) {
         if (diagnostic instanceof JCDiagnostic) {
             JCDiagnostic d = (JCDiagnostic) diagnostic;
             return (Diagnostic<T>) new DiagnosticSourceUnwrapper(d);
         } else {
             return diagnostic;
         }
     }
     protected boolean isTrusted(Object o) {
         Class<?> c = o.getClass();
         Boolean trusted = trustedClasses.get(c);
         if (trusted == null) {
             trusted = c.getName().startsWith("com.sun.tools.javac.")
                     || c.isAnnotationPresent(Trusted.class);
             trustedClasses.put(c, trusted);
         }
         return trusted;
     }
     // <editor-fold defaultstate="collapsed" desc="Wrapper classes">
     // FIXME: all these classes should be converted to use multi-catch when
     // that is available in the bootstrap compiler.
     protected class WrappedJavaFileManager implements JavaFileManager {
         protected JavaFileManager clientJavaFileManager;
         WrappedJavaFileManager(JavaFileManager clientJavaFileManager) {
             clientJavaFileManager.getClass(); // null check
             this.clientJavaFileManager = clientJavaFileManager;
         }
         @Override
         public ClassLoader getClassLoader(Location location) {
             try {
                 return clientJavaFileManager.getClassLoader(location);
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public Iterable<JavaFileObject> list(Location location, String packageName, Set<Kind> kinds, boolean recurse) throws IOException {
             try {
                 return wrapJavaFileObjects(clientJavaFileManager.list(location, packageName, kinds, recurse));
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public String inferBinaryName(Location location, JavaFileObject file) {
             try {
                 return clientJavaFileManager.inferBinaryName(location, unwrap(file));
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public boolean isSameFile(FileObject a, FileObject b) {
             try {
                 return clientJavaFileManager.isSameFile(unwrap(a), unwrap(b));
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public boolean handleOption(String current, Iterator<String> remaining) {
             try {
                 return clientJavaFileManager.handleOption(current, remaining);
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public boolean hasLocation(Location location) {
             try {
                 return clientJavaFileManager.hasLocation(location);
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public JavaFileObject getJavaFileForInput(Location location, String className, Kind kind) throws IOException {
             try {
                 return wrap(clientJavaFileManager.getJavaFileForInput(location, className, kind));
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public JavaFileObject getJavaFileForOutput(Location location, String className, Kind kind, FileObject sibling) throws IOException {
             try {
                 return wrap(clientJavaFileManager.getJavaFileForOutput(location, className, kind, unwrap(sibling)));
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public FileObject getFileForInput(Location location, String packageName, String relativeName) throws IOException {
             try {
                 return wrap(clientJavaFileManager.getFileForInput(location, packageName, relativeName));
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public FileObject getFileForOutput(Location location, String packageName, String relativeName, FileObject sibling) throws IOException {
             try {
                 return wrap(clientJavaFileManager.getFileForOutput(location, packageName, relativeName, unwrap(sibling)));
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public void flush() throws IOException {
             try {
                 clientJavaFileManager.flush();
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public void close() throws IOException {
             try {
                 clientJavaFileManager.close();
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public int isSupportedOption(String option) {
             try {
                 return clientJavaFileManager.isSupportedOption(option);
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
     }
     protected class WrappedFileObject implements FileObject {
         protected FileObject clientFileObject;
         WrappedFileObject(FileObject clientFileObject) {
             clientFileObject.getClass(); // null check
             this.clientFileObject = clientFileObject;
         }
         @Override
         public URI toUri() {
             try {
                 return clientFileObject.toUri();
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public String getName() {
             try {
                 return clientFileObject.getName();
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public InputStream openInputStream() throws IOException {
             try {
                 return clientFileObject.openInputStream();
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public OutputStream openOutputStream() throws IOException {
             try {
                 return clientFileObject.openOutputStream();
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public Reader openReader(boolean ignoreEncodingErrors) throws IOException {
             try {
                 return clientFileObject.openReader(ignoreEncodingErrors);
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
             try {
                 return clientFileObject.getCharContent(ignoreEncodingErrors);
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public Writer openWriter() throws IOException {
             try {
                 return clientFileObject.openWriter();
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public long getLastModified() {
             try {
                 return clientFileObject.getLastModified();
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public boolean delete() {
             try {
                 return clientFileObject.delete();
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
     }
     protected class WrappedJavaFileObject extends WrappedFileObject implements JavaFileObject {
         WrappedJavaFileObject(JavaFileObject clientJavaFileObject) {
             super(clientJavaFileObject);
         }
         @Override
         public Kind getKind() {
             try {
                 return ((JavaFileObject)clientFileObject).getKind();
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public boolean isNameCompatible(String simpleName, Kind kind) {
             try {
                 return ((JavaFileObject)clientFileObject).isNameCompatible(simpleName, kind);
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public NestingKind getNestingKind() {
             try {
                 return ((JavaFileObject)clientFileObject).getNestingKind();
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public Modifier getAccessLevel() {
             try {
                 return ((JavaFileObject)clientFileObject).getAccessLevel();
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
     }
     protected class WrappedDiagnosticListener<T /*super JavaFileObject*/> implements DiagnosticListener<T> {
         protected DiagnosticListener<T> clientDiagnosticListener;
         WrappedDiagnosticListener(DiagnosticListener<T> clientDiagnosticListener) {
             clientDiagnosticListener.getClass(); // null check
             this.clientDiagnosticListener = clientDiagnosticListener;
         }
         @Override
         public void report(Diagnostic<? extends T> diagnostic) {
             try {
                 clientDiagnosticListener.report(unwrap(diagnostic));
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
     }
     public class DiagnosticSourceUnwrapper implements Diagnostic<JavaFileObject> {
         public final JCDiagnostic d;
         DiagnosticSourceUnwrapper(JCDiagnostic d) {
             this.d = d;
         }
         public Diagnostic.Kind getKind() {
             return d.getKind();
         }
         public JavaFileObject getSource() {
             return unwrap(d.getSource());
         }
         public long getPosition() {
             return d.getPosition();
         }
         public long getStartPosition() {
             return d.getStartPosition();
         }
         public long getEndPosition() {
             return d.getEndPosition();
         }
         public long getLineNumber() {
             return d.getLineNumber();
         }
         public long getColumnNumber() {
             return d.getColumnNumber();
         }
         public String getCode() {
             return d.getCode();
         }
         public String getMessage(Locale locale) {
             return d.getMessage(locale);
         }
     }
     protected class WrappedTaskListener implements TaskListener {
         protected TaskListener clientTaskListener;
         WrappedTaskListener(TaskListener clientTaskListener) {
             clientTaskListener.getClass(); // null check
             this.clientTaskListener = clientTaskListener;
         }
         @Override
         public void started(TaskEvent ev) {
             try {
                 clientTaskListener.started(ev);
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
         @Override
         public void finished(TaskEvent ev) {
             try {
                 clientTaskListener.finished(ev);
             } catch (ClientCodeException e) {
                 throw e;
             } catch (RuntimeException e) {
                 throw new ClientCodeException(e);
             } catch (Error e) {
                 throw new ClientCodeException(e);
             }
         }
     }
     // </editor-fold>
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/javac/api/ClientCodeWrapper.java@f85d980faaf8 (annotated)

src/share/classes/com/sun/tools/javac/api/ClientCodeWrapper.java