jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/sjavac/comp/SmartFileManager.java@71b0089b146f (annotated)

src/share/classes/com/sun/tools/sjavac/comp/SmartFileManager.java@71b0089b146f (annotated)

src/share/classes/com/sun/tools/sjavac/comp/SmartFileManager.java

Thu, 15 Aug 2013 17:24:35 +0200

author: erikj
date: Thu, 15 Aug 2013 17:24:35 +0200
changeset 1953: 71b0089b146f
parent 1504: 22e417cdddee
child 2227: 998b10c43157
permissions: -rw-r--r--

8015145: Smartjavac needs more flexibility with linking to sources
Reviewed-by: jjg, ohrstrom

 /*
  * Copyright (c) 2012, 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.sjavac.comp;
 import com.sun.tools.javac.util.ListBuffer;
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.net.URI;
 import java.util.Set;
 import java.util.HashSet;
 import java.util.Map;
 import java.util.HashMap;
 import javax.tools.*;
 import javax.tools.JavaFileObject.Kind;
 /**
  * Intercepts reads and writes to the file system to gather
  * information about what artifacts are generated.
  *
  * Traps writes to certain files, if the content written is identical
  * to the existing file.
  *
  * Can also blind out the filemanager from seeing certain files in the file system.
  * Necessary to prevent javac from seeing some sources where the source path points.
  *
  * <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></p>
  */
 public class SmartFileManager extends ForwardingJavaFileManager<JavaFileManager> {
     // Set of sources that can be seen by javac.
     Set<URI> visibleSources = new HashSet<URI>();
     // Map from modulename:packagename to artifacts.
     Map<String,Set<URI>> packageArtifacts = new HashMap<String,Set<URI>>();
     // Where to print informational messages.
     PrintWriter stdout;
     public SmartFileManager(JavaFileManager fileManager) {
         super(fileManager);
     }
     public void setVisibleSources(Set<URI> s) {
         visibleSources = s;
     }
     public void cleanArtifacts() {
         packageArtifacts = new HashMap<String,Set<URI>>();
     }
     public void setLog(PrintWriter pw) {
         stdout = pw;
     }
     public Map<String,Set<URI>> getPackageArtifacts() {
         return packageArtifacts;
     }
     @Override
     public Iterable<JavaFileObject> list(Location location,
                                          String packageName,
                                          Set<Kind> kinds,
                                          boolean recurse)
         throws IOException
     {
         // Acquire the list of files.
         Iterable<JavaFileObject> files = super.list(location, packageName, kinds, recurse);
         if (visibleSources.isEmpty()) {
             return files;
         }
         // Now filter!
         ListBuffer<JavaFileObject> filteredFiles = new ListBuffer<JavaFileObject>();
         for (JavaFileObject f : files) {
             URI uri = f.toUri();
             String t = uri.toString();
             if (t.startsWith("jar:")
                 || t.endsWith(".class")
                 || visibleSources.contains(uri))
             {
                 filteredFiles.add(f);
             }
         }
         return filteredFiles;
     }
     @Override
     public boolean hasLocation(Location location) {
         return super.hasLocation(location);
     }
     @Override
     public JavaFileObject getJavaFileForInput(Location location,
                                               String className,
                                               Kind kind)
         throws IOException
     {
         JavaFileObject file = super.getJavaFileForInput(location, className, kind);
         if (file == null || visibleSources.isEmpty()) {
             return file;
         }
         if (visibleSources.contains(file.toUri())) {
             return file;
         }
         return null;
     }
     @Override
     public JavaFileObject getJavaFileForOutput(Location location,
                                                String className,
                                                Kind kind,
                                                FileObject sibling)
         throws IOException
     {
         JavaFileObject file = super.getJavaFileForOutput(location, className, kind, sibling);
         if (file == null) return file;
         int dp = className.lastIndexOf('.');
         String pkg_name = "";
         if (dp != -1) {
             pkg_name = className.substring(0, dp);
         }
         // When modules are in use, then the mod_name might be something like "jdk_base"
         String mod_name = "";
         addArtifact(mod_name+":"+pkg_name, file.toUri());
         return file;
     }
     @Override
     public FileObject getFileForInput(Location location,
                                       String packageName,
                                       String relativeName)
         throws IOException
     {
         FileObject file =  super.getFileForInput(location, packageName, relativeName);
         if (file == null || visibleSources.isEmpty()) {
             return file;
         }
         if (visibleSources.contains(file.toUri())) {
             return file;
         }
         return null;
     }
     @Override
     public FileObject getFileForOutput(Location location,
                                        String packageName,
                                        String relativeName,
                                        FileObject sibling)
         throws IOException
     {
         FileObject file = super.getFileForOutput(location, packageName, relativeName, sibling);
         if (file == null) return file;
         if (location.equals(StandardLocation.NATIVE_HEADER_OUTPUT) &&
                 file instanceof JavaFileObject) {
            file = new SmartFileObject((JavaFileObject)file, stdout);
            packageName = ":" + packageNameFromFileName(relativeName);
         }
         if (packageName.equals("")) {
             packageName = ":";
         }
         addArtifact(packageName, file.toUri());
         return file;
     }
     private String packageNameFromFileName(String fn) {
         StringBuilder sb = new StringBuilder();
         int p = fn.indexOf('_'), pp = 0;
         while (p != -1) {
             if (sb.length() > 0) sb.append('.');
             sb.append(fn.substring(pp,p));
             if (p == fn.length()-1) break;
             pp = p+1;
             p = fn.indexOf('_',pp);
         }
         return sb.toString();
     }
     @Override
     public void flush() throws IOException {
         super.flush();
     }
     @Override
     public void close() throws IOException {
         super.close();
     }
     void addArtifact(String pkgName, URI art) {
         Set<URI> s = packageArtifacts.get(pkgName);
         if (s == null) {
             s = new HashSet<URI>();
             packageArtifacts.put(pkgName, s);
         }
         s.add(art);
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/sjavac/comp/SmartFileManager.java@71b0089b146f (annotated)

src/share/classes/com/sun/tools/sjavac/comp/SmartFileManager.java