Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * Copyright (c) 2010, 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.

  *

  * 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.

  */

 import com.sun.tools.javac.file.JavacFileManager;

 import java.io.*;

 import java.util.*;

 import java.util.regex.*;

 import javax.tools.Diagnostic;

 import javax.tools.DiagnosticCollector;

 import javax.tools.JavaCompiler;

 import javax.tools.JavaCompiler.CompilationTask;

 import javax.tools.JavaFileObject;

 import javax.tools.StandardJavaFileManager;

 import javax.tools.ToolProvider;

 // The following two classes are both used, but cannot be imported directly

 // import com.sun.tools.javac.Main

 // import com.sun.tools.javac.main.Main

 import com.sun.tools.javac.util.Context;

 import com.sun.tools.javac.util.JavacMessages;

 import com.sun.tools.javac.util.JCDiagnostic;

 import java.net.URL;

 import java.net.URLClassLoader;

 import javax.annotation.processing.Processor;

 /**

  * Class to handle example code designed to illustrate javac diagnostic messages.

  */

 class Example implements Comparable<Example> {

     /* Create an Example from the files found at path.

      * The head of the file, up to the first Java code, is scanned

      * for information about the test, such as what resource keys it

      * generates when run, what options are required to run it, and so on.

      */

     Example(File file) {

         this.file = file;

         declaredKeys = new TreeSet<String>();

         srcFiles = new ArrayList<File>();

         procFiles = new ArrayList<File>();

         supportFiles = new ArrayList<File>();

         srcPathFiles = new ArrayList<File>();

         findFiles(file, srcFiles);

         for (File f: srcFiles) {

             parse(f);

         }

         if (infoFile == null)

             throw new Error("Example " + file + " has no info file");

     }

     private void findFiles(File f, List<File> files) {

         if (f.isDirectory()) {

             for (File c: f.listFiles()) {

                 if (files == srcFiles && c.getName().equals("processors"))

                     findFiles(c, procFiles);

                 else if (files == srcFiles && c.getName().equals("sourcepath")) {

                     srcPathDir = c;

                     findFiles(c, srcPathFiles);

                 } else if (files == srcFiles && c.getName().equals("support"))

                     findFiles(c, supportFiles);

                 else

                     findFiles(c, files);

             }

         } else if (f.isFile() && f.getName().endsWith(".java")) {

             files.add(f);

         }

     }

     private void parse(File f) {

         Pattern keyPat = Pattern.compile(" *// *key: *([^ ]+) *");

         Pattern optPat = Pattern.compile(" *// *options: *(.*)");

         Pattern runPat = Pattern.compile(" *// *run: *(.*)");

         Pattern javaPat = Pattern.compile(" *@?[A-Za-z].*");

         try {

             String[] lines = read(f).split("[\r\n]+");

             for (String line: lines) {

                 Matcher keyMatch = keyPat.matcher(line);

                 if (keyMatch.matches()) {

                     foundInfo(f);

                     declaredKeys.add(keyMatch.group(1));

                     continue;

                 }

                 Matcher optMatch = optPat.matcher(line);

                 if (optMatch.matches()) {

                     foundInfo(f);

                     options = Arrays.asList(optMatch.group(1).trim().split(" +"));

                     continue;

                 }

                 Matcher runMatch = runPat.matcher(line);

                 if (runMatch.matches()) {

                     foundInfo(f);

                     runOpts = Arrays.asList(runMatch.group(1).trim().split(" +"));

                 }

                 if (javaPat.matcher(line).matches())

                     break;

             }

         } catch (IOException e) {

             throw new Error(e);

         }

     }

     private void foundInfo(File file) {

         if (infoFile != null && !infoFile.equals(file))

             throw new Error("multiple info files found: " + infoFile + ", " + file);

         infoFile = file;

     }

     String getName() {

         return file.getName();

     }

     /**

      * Get the set of resource keys that this test declares it will generate

      * when it is run.

      */

     Set<String> getDeclaredKeys() {

         return declaredKeys;

     }

     /**

      * Get the set of resource keys that this test generates when it is run.

      * The test will be run if it has not already been run.

      */

     Set<String> getActualKeys() {

         if (actualKeys == null)

             actualKeys = run(false);

         return actualKeys;

     }

     /**

      * Run the test.  Information in the test header is used to determine

      * how to run the test.

      */

     void run(PrintWriter out, boolean raw, boolean verbose) {

         if (out == null)

             throw new NullPointerException();

         try {

             run(out, null, raw, verbose);

         } catch (IOException e) {

             e.printStackTrace(out);

         }

     }

     Set<String> run(boolean verbose) {

         Set<String> keys = new TreeSet<String>();

         try {

             run(null, keys, true, verbose);

         } catch (IOException e) {

             e.printStackTrace();

         }

         return keys;

     }

     /**

      * Run the test.  Information in the test header is used to determine

      * how to run the test.

      */

     private void run(PrintWriter out, Set<String> keys, boolean raw, boolean verbose)

             throws IOException {

         ClassLoader loader = getClass().getClassLoader();

         if (supportFiles.size() > 0) {

             File supportDir = new File(tempDir, "support");

             supportDir.mkdirs();

             clean(supportDir);

             List<String> sOpts = Arrays.asList("-d", supportDir.getPath());

             new Jsr199Compiler(verbose).run(null, null, false, sOpts, procFiles);

             URLClassLoader ucl =

                     new URLClassLoader(new URL[] { supportDir.toURI().toURL() }, loader);

             loader = ucl;

         }

         File classesDir = new File(tempDir, "classes");

         classesDir.mkdirs();

         clean(classesDir);

         List<String> opts = new ArrayList<String>();

         opts.add("-d");

         opts.add(classesDir.getPath());

         if (options != null)

             opts.addAll(options);

         if (procFiles.size() > 0) {

             List<String> pOpts = Arrays.asList("-d", classesDir.getPath());

             new Jsr199Compiler(verbose).run(null, null, false, pOpts, procFiles);

             opts.add("-classpath"); // avoid using -processorpath for now

             opts.add(classesDir.getPath());

             createAnnotationServicesFile(classesDir, procFiles);

         }

         if (srcPathDir != null) {

             opts.add("-sourcepath");

             opts.add(srcPathDir.getPath());

         }

         try {

             Compiler c = Compiler.getCompiler(runOpts, verbose);

             c.run(out, keys, raw, opts, srcFiles);

         } catch (IllegalArgumentException e) {

             if (out != null) {

                 out.println("Invalid value for run tag: " + runOpts);

             }

         }

     }

     void createAnnotationServicesFile(File dir, List<File> procFiles) throws IOException {

         File servicesDir = new File(new File(dir, "META-INF"), "services");

         servicesDir.mkdirs();

         File annoServices = new File(servicesDir, Processor.class.getName());

         Writer out = new FileWriter(annoServices);

         try {

             for (File f: procFiles) {

                 out.write(f.getName().toString().replace(".java", ""));

             }

         } finally {

             out.close();

         }

     }

     @Override

     public int compareTo(Example e) {

         return file.compareTo(e.file);

     }

     @Override

     public String toString() {

         return file.getPath();

     }

     /**

      * Read the contents of a file.

      */

     private String read(File f) throws IOException {

         byte[] bytes = new byte[(int) f.length()];

         DataInputStream in = new DataInputStream(new FileInputStream(f));

         try {

             in.readFully(bytes);

         } finally {

             in.close();

         }

         return new String(bytes);

     }

     /**

      * Clean the contents of a directory.

      */

     boolean clean(File dir) {

         boolean ok = true;

         for (File f: dir.listFiles()) {

             if (f.isDirectory())

                 ok &= clean(f);

             ok &= f.delete();

         }

         return ok;

     }

     File file;

     List<File> srcFiles;

     List<File> procFiles;

     File srcPathDir;

     List<File> srcPathFiles;

     List<File> supportFiles;

     File infoFile;

     private List<String> runOpts;

     private List<String> options;

     private Set<String> actualKeys;

     private Set<String> declaredKeys;

     static File tempDir = new File(System.getProperty("java.io.tmpdir"));

     static void setTempDir(File tempDir) {

         Example.tempDir = tempDir;

     }

     abstract static class Compiler {

         static Compiler getCompiler(List<String> opts, boolean verbose) {

             String first;

             String[] rest;

             if (opts == null || opts.size() == 0) {

                 first = null;

                 rest = new String[0];

             } else {

                 first = opts.get(0);

                 rest = opts.subList(1, opts.size()).toArray(new String[opts.size() - 1]);

             }

             if (first == null || first.equals("jsr199"))

                 return new Jsr199Compiler(verbose, rest);

             else if (first.equals("simple"))

                 return new SimpleCompiler(verbose);

             else if (first.equals("backdoor"))

                 return new BackdoorCompiler(verbose);

             else

                 throw new IllegalArgumentException(first);

         }

         protected Compiler(boolean verbose) {

             this.verbose = verbose;

         }

         abstract boolean run(PrintWriter out, Set<String> keys, boolean raw,

                 List<String> opts,  List<File> files);

         void setSupportClassLoader(ClassLoader cl) {

             loader = cl;

         }

         protected ClassLoader loader;

         protected boolean verbose;

     }

     /**

      * Compile using the JSR 199 API.  The diagnostics generated are

      * scanned for resource keys.   Not all diagnostic keys are generated

      * via the JSR 199 API -- for example, rich diagnostics are not directly

      * accessible, and some diagnostics generated by the file manager may

      * not be generated (for example, the JSR 199 file manager does not see

      * -Xlint:path).

      */

     static class Jsr199Compiler extends Compiler {

         List<String> fmOpts;

         Jsr199Compiler(boolean verbose, String... args) {

             super(verbose);

             for (int i = 0; i < args.length; i++) {

                 String arg = args[i];

                 if (arg.equals("-filemanager") && (i + 1 < args.length)) {

                     fmOpts = Arrays.asList(args[++i].split(","));

                 } else

                     throw new IllegalArgumentException(arg);

             }

         }

         @Override

         boolean run(PrintWriter out, Set<String> keys, boolean raw, List<String> opts, List<File> files) {

             if (out != null && keys != null)

                 throw new IllegalArgumentException();

             if (verbose)

                 System.err.println("run_jsr199: " + opts + " " + files);

             DiagnosticCollector<JavaFileObject> dc = null;

             if (keys != null)

                 dc = new DiagnosticCollector<JavaFileObject>();

             if (raw) {

                 List<String> newOpts = new ArrayList<String>();

                 newOpts.add("-XDrawDiagnostics");

                 newOpts.addAll(opts);

                 opts = newOpts;

             }

             JavaCompiler c = ToolProvider.getSystemJavaCompiler();

             StandardJavaFileManager fm = c.getStandardFileManager(dc, null, null);

             if (fmOpts != null)

                 fm = new FileManager(fm, fmOpts);

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

             CompilationTask t = c.getTask(out, fm, dc, opts, null, fos);

             Boolean ok = t.call();

             if (keys != null) {

                 for (Diagnostic<? extends JavaFileObject> d: dc.getDiagnostics()) {

                     scanForKeys((JCDiagnostic) d, keys);

                 }

             }

             return ok;

         }

         /**

          * Scan a diagnostic for resource keys.  This will not detect additional

          * sub diagnostics that might be generated by a rich diagnostic formatter.

          */

         private static void scanForKeys(JCDiagnostic d, Set<String> keys) {

             keys.add(d.getCode());

             for (Object o: d.getArgs()) {

                 if (o instanceof JCDiagnostic) {

                     scanForKeys((JCDiagnostic) o, keys);

                 }

             }

             for (JCDiagnostic sd: d.getSubdiagnostics())

                 scanForKeys(sd, keys);

         }

     }

     /**

      * Run the test using the standard simple entry point.

      */

     static class SimpleCompiler extends Compiler {

         SimpleCompiler(boolean verbose) {

             super(verbose);

         }

         @Override

         boolean run(PrintWriter out, Set<String> keys, boolean raw, List<String> opts, List<File> files) {

             if (out != null && keys != null)

                 throw new IllegalArgumentException();

             if (verbose)

                 System.err.println("run_simple: " + opts + " " + files);

             List<String> args = new ArrayList<String>();

             if (keys != null || raw)

                 args.add("-XDrawDiagnostics");

             args.addAll(opts);

             for (File f: files)

                 args.add(f.getPath());

             StringWriter sw = null;

             PrintWriter pw;

             if (keys != null) {

                 sw = new StringWriter();

                 pw = new PrintWriter(sw);

             } else

                 pw = out;

             int rc = com.sun.tools.javac.Main.compile(args.toArray(new String[args.size()]), pw);

             if (keys != null) {

                 pw.close();

                 scanForKeys(sw.toString(), keys);

             }

             return (rc == 0);

         }

         private static void scanForKeys(String text, Set<String> keys) {

             StringTokenizer st = new StringTokenizer(text, " ,\r\n():");

             while (st.hasMoreElements()) {

                 String t = st.nextToken();

                 if (t.startsWith("compiler."))

                     keys.add(t);

             }

         }

     }

     static class BackdoorCompiler extends Compiler {

         BackdoorCompiler(boolean verbose) {

             super(verbose);

         }

         @Override

         boolean run(PrintWriter out, Set<String> keys, boolean raw, List<String> opts, List<File> files) {

             if (out != null && keys != null)

                 throw new IllegalArgumentException();

             if (verbose)

                 System.err.println("run_simple: " + opts + " " + files);

             List<String> args = new ArrayList<String>(opts);

             if (out != null && raw)

                 args.add("-XDrawDiagnostics");

             args.addAll(opts);

             for (File f: files)

                 args.add(f.getPath());

             StringWriter sw = null;

             PrintWriter pw;

             if (keys != null) {

                 sw = new StringWriter();

                 pw = new PrintWriter(sw);

             } else

                 pw = out;

             Context c = new Context();

             JavacFileManager.preRegister(c); // can't create it until Log has been set up

             MessageTracker.preRegister(c, keys);

             com.sun.tools.javac.main.Main m = new com.sun.tools.javac.main.Main("javac", pw);

             int rc = m.compile(args.toArray(new String[args.size()]), c);

             if (keys != null) {

                 pw.close();

             }

             return (rc == 0);

         }

         static class MessageTracker extends JavacMessages {

             MessageTracker(Context context) {

                 super(context);

             }

             static void preRegister(final Context c, final Set<String> keys) {

                 if (keys != null) {

                     c.put(JavacMessages.messagesKey, new Context.Factory<JavacMessages>() {

                         public JavacMessages make() {

                             return new MessageTracker(c) {

                                 @Override

                                 public String getLocalizedString(Locale l, String key, Object... args) {

                                     keys.add(key);

                                     return super.getLocalizedString(l, key, args);

                                 }

                             };

                         }

                     });

                 }

             }

         }

     }

 }