1 /*

     2  * Copyright (c) 2002, 2016, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package com.sun.tools.javah;

    27 

    28 import java.io.File;

    29 import java.io.FileNotFoundException;

    30 import java.io.IOException;

    31 import java.io.OutputStream;

    32 import java.io.PrintWriter;

    33 import java.io.Writer;

    34 import java.nio.file.NoSuchFileException;

    35 import java.text.MessageFormat;

    36 import java.util.ArrayList;

    37 import java.util.Arrays;

    38 import java.util.Collections;

    39 import java.util.HashMap;

    40 import java.util.Iterator;

    41 import java.util.LinkedHashSet;

    42 import java.util.List;

    43 import java.util.Locale;

    44 import java.util.Map;

    45 import java.util.MissingResourceException;

    46 import java.util.Objects;

    47 import java.util.ResourceBundle;

    48 import java.util.Set;

    49 

    50 import javax.annotation.processing.AbstractProcessor;

    51 import javax.annotation.processing.Messager;

    52 import javax.annotation.processing.ProcessingEnvironment;

    53 import javax.annotation.processing.RoundEnvironment;

    54 import javax.annotation.processing.SupportedAnnotationTypes;

    55 import javax.lang.model.SourceVersion;

    56 import javax.lang.model.element.ExecutableElement;

    57 import javax.lang.model.element.TypeElement;

    58 import javax.lang.model.element.VariableElement;

    59 import javax.lang.model.type.ArrayType;

    60 import javax.lang.model.type.DeclaredType;

    61 import javax.lang.model.type.TypeMirror;

    62 import javax.lang.model.type.TypeVisitor;

    63 import javax.lang.model.util.ElementFilter;

    64 import javax.lang.model.util.SimpleTypeVisitor9;

    65 import javax.lang.model.util.Types;

    66 import javax.tools.Diagnostic;

    67 import javax.tools.DiagnosticListener;

    68 import javax.tools.JavaCompiler;

    69 import javax.tools.JavaCompiler.CompilationTask;

    70 import javax.tools.JavaFileManager;

    71 import javax.tools.JavaFileObject;

    72 import javax.tools.StandardJavaFileManager;

    73 import javax.tools.StandardLocation;

    74 import javax.tools.ToolProvider;

    75 

    76 import com.sun.tools.javac.code.Symbol.CompletionFailure;

    77 import com.sun.tools.javac.main.CommandLine;

    78 import com.sun.tools.javac.util.DefinedBy;

    79 import com.sun.tools.javac.util.DefinedBy.Api;

    80 

    81 import static javax.tools.Diagnostic.Kind.*;

    82 

    83 

    84 /**

    85  * Javah generates support files for native methods.

    86  * Parse commandline options and invokes javadoc to execute those commands.

    87  *

    88  * <p><b>This is NOT part of any supported API.

    89  * If you write code that depends on this, you do so at your own

    90  * risk.  This code and its internal interfaces are subject to change

    91  * or deletion without notice.</b></p>

    92  *

    93  * @author Sucheta Dambalkar

    94  * @author Jonathan Gibbons

    95  */

    96 public class JavahTask implements NativeHeaderTool.NativeHeaderTask {

    97     public class BadArgs extends Exception {

    98         private static final long serialVersionUID = 1479361270874789045L;

    99         BadArgs(String key, Object... args) {

   100             super(JavahTask.this.getMessage(key, args));

   101             this.key = key;

   102             this.args = args;

   103         }

   104 

   105         BadArgs showUsage(boolean b) {

   106             showUsage = b;

   107             return this;

   108         }

   109 

   110         final String key;

   111         final Object[] args;

   112         boolean showUsage;

   113     }

   114 

   115     static abstract class Option {

   116         Option(boolean hasArg, String... aliases) {

   117             this.hasArg = hasArg;

   118             this.aliases = aliases;

   119         }

   120 

   121         boolean isHidden() {

   122             return false;

   123         }

   124 

   125         boolean matches(String opt) {

   126             for (String a: aliases) {

   127                 if (a.equals(opt))

   128                     return true;

   129             }

   130             return false;

   131         }

   132 

   133         boolean ignoreRest() {

   134             return false;

   135         }

   136 

   137         abstract void process(JavahTask task, String opt, String arg) throws BadArgs;

   138 

   139         final boolean hasArg;

   140         final String[] aliases;

   141     }

   142 

   143     static abstract class HiddenOption extends Option {

   144         HiddenOption(boolean hasArg, String... aliases) {

   145             super(hasArg, aliases);

   146         }

   147 

   148         @Override

   149         boolean isHidden() {

   150             return true;

   151         }

   152     }

   153 

   154     static final Option[] recognizedOptions = {

   155         new Option(true, "-o") {

   156             void process(JavahTask task, String opt, String arg) {

   157                 task.ofile = new File(arg);

   158             }

   159         },

   160 

   161         new Option(true, "-d") {

   162             void process(JavahTask task, String opt, String arg) {

   163                 task.odir = new File(arg);

   164             }

   165         },

   166 

   167         new HiddenOption(true, "-td") {

   168             void process(JavahTask task, String opt, String arg) {

   169                  // ignored; for backwards compatibility

   170             }

   171         },

   172 

   173         new Option(false, "-v", "-verbose") {

   174             void process(JavahTask task, String opt, String arg) {

   175                 task.verbose = true;

   176             }

   177         },

   178 

   179         new Option(false, "-h", "-help", "--help", "-?") {

   180             void process(JavahTask task, String opt, String arg) {

   181                 task.help = true;

   182             }

   183         },

   184 

   185         new HiddenOption(false, "-trace") {

   186             void process(JavahTask task, String opt, String arg) {

   187                 task.trace = true;

   188             }

   189         },

   190 

   191         new Option(false, "-version") {

   192             void process(JavahTask task, String opt, String arg) {

   193                 task.version = true;

   194             }

   195         },

   196 

   197         new HiddenOption(false, "-fullversion") {

   198             void process(JavahTask task, String opt, String arg) {

   199                 task.fullVersion = true;

   200             }

   201         },

   202 

   203         new Option(false, "-jni") {

   204             void process(JavahTask task, String opt, String arg) {

   205                 task.jni = true;

   206             }

   207         },

   208 

   209         new Option(false, "-force") {

   210             void process(JavahTask task, String opt, String arg) {

   211                 task.force = true;

   212             }

   213         },

   214 

   215         new HiddenOption(false, "-Xnew") {

   216             void process(JavahTask task, String opt, String arg) {

   217                 // we're already using the new javah

   218             }

   219         },

   220 

   221         new HiddenOption(false, "-llni", "-Xllni") {

   222             void process(JavahTask task, String opt, String arg) {

   223                 task.llni = true;

   224             }

   225         },

   226 

   227         new HiddenOption(false, "-llnidouble") {

   228             void process(JavahTask task, String opt, String arg) {

   229                 task.llni = true;

   230                 task.doubleAlign = true;

   231             }

   232         },

   233 

   234         new HiddenOption(false) {

   235             boolean matches(String opt) {

   236                 return opt.startsWith("-XD");

   237             }

   238             void process(JavahTask task, String opt, String arg) {

   239                 task.javac_extras.add(opt);

   240             }

   241         },

   242     };

   243 

   244     JavahTask() {

   245     }

   246 

   247     JavahTask(Writer out,

   248             JavaFileManager fileManager,

   249             DiagnosticListener<? super JavaFileObject> diagnosticListener,

   250             Iterable<String> options,

   251             Iterable<String> classes) {

   252         this();

   253         this.log = getPrintWriterForWriter(out);

   254         this.fileManager = fileManager;

   255         this.diagnosticListener = diagnosticListener;

   256 

   257         try {

   258             handleOptions(options, false);

   259         } catch (BadArgs e) {

   260             throw new IllegalArgumentException(e.getMessage());

   261         }

   262 

   263         this.classes = new ArrayList<>();

   264         if (classes != null) {

   265             for (String classname: classes) {

   266                 Objects.requireNonNull(classname);

   267                 this.classes.add(classname);

   268             }

   269         }

   270     }

   271 

   272     public void setLocale(Locale locale) {

   273         if (locale == null)

   274             locale = Locale.getDefault();

   275         task_locale = locale;

   276     }

   277 

   278     public void setLog(PrintWriter log) {

   279         this.log = log;

   280     }

   281 

   282     public void setLog(OutputStream s) {

   283         setLog(getPrintWriterForStream(s));

   284     }

   285 

   286     static PrintWriter getPrintWriterForStream(OutputStream s) {

   287         return new PrintWriter(s, true);

   288     }

   289 

   290     static PrintWriter getPrintWriterForWriter(Writer w) {

   291         if (w == null)

   292             return getPrintWriterForStream(null);

   293         else if (w instanceof PrintWriter)

   294             return (PrintWriter) w;

   295         else

   296             return new PrintWriter(w, true);

   297     }

   298 

   299     public void setDiagnosticListener(DiagnosticListener<? super JavaFileObject> dl) {

   300         diagnosticListener = dl;

   301     }

   302 

   303     public void setDiagnosticListener(OutputStream s) {

   304         setDiagnosticListener(getDiagnosticListenerForStream(s));

   305     }

   306 

   307     private DiagnosticListener<JavaFileObject> getDiagnosticListenerForStream(OutputStream s) {

   308         return getDiagnosticListenerForWriter(getPrintWriterForStream(s));

   309     }

   310 

   311     private DiagnosticListener<JavaFileObject> getDiagnosticListenerForWriter(Writer w) {

   312         final PrintWriter pw = getPrintWriterForWriter(w);

   313         return diagnostic -> {

   314             if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {

   315                 pw.print(getMessage("err.prefix"));

   316                 pw.print(" ");

   317             }

   318             pw.println(diagnostic.getMessage(null));

   319         };

   320     }

   321 

   322     int run(String[] args) {

   323         try {

   324             handleOptions(args);

   325             boolean ok = run();

   326             return ok ? 0 : 1;

   327         } catch (BadArgs e) {

   328             diagnosticListener.report(createDiagnostic(e.key, e.args));

   329             return 1;

   330         } catch (InternalError e) {

   331             diagnosticListener.report(createDiagnostic("err.internal.error", e.getMessage()));

   332             return 1;

   333         } catch (Util.Exit e) {

   334             return e.exitValue;

   335         } finally {

   336             log.flush();

   337         }

   338     }

   339 

   340     public void handleOptions(String[] args) throws BadArgs {

   341         handleOptions(Arrays.asList(args), true);

   342     }

   343 

   344     private void handleOptions(Iterable<String> args, boolean allowClasses) throws BadArgs {

   345         if (log == null) {

   346             log = getPrintWriterForStream(System.out);

   347             if (diagnosticListener == null)

   348               diagnosticListener = getDiagnosticListenerForStream(System.err);

   349         } else {

   350             if (diagnosticListener == null)

   351               diagnosticListener = getDiagnosticListenerForWriter(log);

   352         }

   353 

   354         if (fileManager == null)

   355             fileManager = getDefaultFileManager(diagnosticListener, log);

   356 

   357         Iterator<String> iter = expandAtArgs(args).iterator();

   358         noArgs = !iter.hasNext();

   359 

   360         while (iter.hasNext()) {

   361             String arg = iter.next();

   362             if (arg.startsWith("-"))

   363                 handleOption(arg, iter);

   364             else if (allowClasses) {

   365                 if (classes == null)

   366                     classes = new ArrayList<>();

   367                 classes.add(arg);

   368                 while (iter.hasNext())

   369                     classes.add(iter.next());

   370             } else

   371                 throw new BadArgs("err.unknown.option", arg).showUsage(true);

   372         }

   373 

   374         if ((classes == null || classes.size() == 0) &&

   375                 !(noArgs || help || version || fullVersion)) {

   376             throw new BadArgs("err.no.classes.specified");

   377         }

   378 

   379         if (jni && llni)

   380             throw new BadArgs("jni.llni.mixed");

   381 

   382         if (odir != null && ofile != null)

   383             throw new BadArgs("dir.file.mixed");

   384     }

   385 

   386     private void handleOption(String name, Iterator<String> rest) throws BadArgs {

   387         for (Option o: recognizedOptions) {

   388             if (o.matches(name)) {

   389                 if (o.hasArg) {

   390                     if (rest.hasNext())

   391                         o.process(this, name, rest.next());

   392                     else

   393                         throw new BadArgs("err.missing.arg", name).showUsage(true);

   394                 } else

   395                     o.process(this, name, null);

   396 

   397                 if (o.ignoreRest()) {

   398                     while (rest.hasNext())

   399                         rest.next();

   400                 }

   401                 return;

   402             }

   403         }

   404 

   405         if (fileManager.handleOption(name, rest))

   406             return;

   407 

   408         throw new BadArgs("err.unknown.option", name).showUsage(true);

   409     }

   410 

   411     private Iterable<String> expandAtArgs(Iterable<String> args) throws BadArgs {

   412         try {

   413             List<String> l = new ArrayList<>();

   414             for (String arg: args) l.add(arg);

   415             return Arrays.asList(CommandLine.parse(l.toArray(new String[l.size()])));

   416         } catch (FileNotFoundException | NoSuchFileException e) {

   417             throw new BadArgs("at.args.file.not.found", e.getLocalizedMessage());

   418         } catch (IOException e) {

   419             throw new BadArgs("at.args.io.exception", e.getLocalizedMessage());

   420         }

   421     }

   422 

   423     public Boolean call() {

   424         return run();

   425     }

   426 

   427     public boolean run() throws Util.Exit {

   428 

   429         if (!javac_extras.contains("-XDsuppress-tool-removal-message")) {

   430             log.println(getMessage("javah.misc.Deprecation"));

   431         }

   432 

   433         Util util = new Util(log, diagnosticListener);

   434 

   435         if (noArgs || help) {

   436             showHelp();

   437             return help; // treat noArgs as an error for purposes of exit code

   438         }

   439 

   440         if (version || fullVersion) {

   441             showVersion(fullVersion);

   442             return true;

   443         }

   444 

   445         util.verbose = verbose;

   446 

   447         Gen g;

   448 

   449         if (llni)

   450             g = new LLNI(doubleAlign, util);

   451         else {

   452             g = new JNI(util);

   453         }

   454 

   455         if (ofile != null) {

   456             if (!(fileManager instanceof StandardJavaFileManager)) {

   457                 diagnosticListener.report(createDiagnostic("err.cant.use.option.for.fm", "-o"));

   458                 return false;

   459             }

   460             Iterable<? extends JavaFileObject> iter =

   461                     ((StandardJavaFileManager) fileManager).getJavaFileObjectsFromFiles(Collections.singleton(ofile));

   462             JavaFileObject fo = iter.iterator().next();

   463             g.setOutFile(fo);

   464         } else {

   465             if (odir != null) {

   466                 if (!(fileManager instanceof StandardJavaFileManager)) {

   467                     diagnosticListener.report(createDiagnostic("err.cant.use.option.for.fm", "-d"));

   468                     return false;

   469                 }

   470 

   471                 if (!odir.exists())

   472                     if (!odir.mkdirs())

   473                         util.error("cant.create.dir", odir.toString());

   474                 try {

   475                     ((StandardJavaFileManager) fileManager).setLocation(StandardLocation.CLASS_OUTPUT, Collections.singleton(odir));

   476                 } catch (IOException e) {

   477                     Object msg = e.getLocalizedMessage();

   478                     if (msg == null) {

   479                         msg = e;

   480                     }

   481                     diagnosticListener.report(createDiagnostic("err.ioerror", odir, msg));

   482                     return false;

   483                 }

   484             }

   485             g.setFileManager(fileManager);

   486         }

   487 

   488         /*

   489          * Force set to false will turn off smarts about checking file

   490          * content before writing.

   491          */

   492         g.setForce(force);

   493 

   494         if (fileManager instanceof JavahFileManager)

   495             ((JavahFileManager) fileManager).setSymbolFileEnabled(false);

   496 

   497         JavaCompiler c = ToolProvider.getSystemJavaCompiler();

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

   499         opts.add("-proc:only");

   500         opts.addAll(javac_extras);

   501 

   502         CompilationTask t;

   503         try {

   504             t = c.getTask(log, fileManager, diagnosticListener, opts, classes, null);

   505         } catch (IllegalArgumentException e) {

   506             util.error("bad.arg", e.getMessage());

   507             return false;

   508         }

   509 

   510         JavahProcessor p = new JavahProcessor(g);

   511         t.setProcessors(Collections.singleton(p));

   512 

   513         boolean ok = t.call();

   514         if (p.exit != null)

   515             throw new Util.Exit(p.exit);

   516         return ok;

   517 

   518     }

   519 

   520     static StandardJavaFileManager getDefaultFileManager(final DiagnosticListener<? super JavaFileObject> dl, PrintWriter log) {

   521         return JavahFileManager.create(dl, log);

   522     }

   523 

   524     private void showHelp() {

   525         log.println(getMessage("main.usage", progname));

   526 

   527         for (Option o: recognizedOptions) {

   528             if (o.isHidden())

   529                 continue;

   530             String name = o.aliases[0].substring(1); // there must always be at least one name

   531             log.println(getMessage("main.opt." + name));

   532         }

   533 

   534         String[] fmOptions = {

   535             "--module-path", "--system",

   536             "--class-path", "-classpath", "-cp",

   537             "-bootclasspath"

   538         };

   539 

   540         for (String o: fmOptions) {

   541             if (fileManager.isSupportedOption(o) == -1)

   542                 continue;

   543             String name = o.replaceAll("^-+", "").replaceAll("-+", "_");

   544             log.println(getMessage("main.opt." + name));

   545         }

   546 

   547         log.println(getMessage("main.usage.foot"));

   548     }

   549 

   550     private void showVersion(boolean full) {

   551         log.println(version(full));

   552     }

   553 

   554     private static final String versionRBName = "com.sun.tools.javah.resources.version";

   555     private static ResourceBundle versionRB;

   556 

   557     private String version(boolean full) {

   558         String msgKey = (full ? "javah.fullVersion" : "javah.version");

   559         String versionKey = (full ? "full" : "release");

   560         // versionKey=product:  mm.nn.oo[-milestone]

   561         // versionKey=full:     mm.mm.oo[-milestone]-build

   562         if (versionRB == null) {

   563             try {

   564                 versionRB = ResourceBundle.getBundle(versionRBName);

   565             } catch (MissingResourceException e) {

   566                 return getMessage("version.resource.missing", System.getProperty("java.version"));

   567             }

   568         }

   569         try {

   570             return getMessage(msgKey, "javah", versionRB.getString(versionKey));

   571         }

   572         catch (MissingResourceException e) {

   573             return getMessage("version.unknown", System.getProperty("java.version"));

   574         }

   575     }

   576 

   577     private Diagnostic<JavaFileObject> createDiagnostic(final String key, final Object... args) {

   578         return new Diagnostic<JavaFileObject>() {

   579             @DefinedBy(Api.COMPILER)

   580             public Kind getKind() {

   581                 return Diagnostic.Kind.ERROR;

   582             }

   583 

   584             @DefinedBy(Api.COMPILER)

   585             public JavaFileObject getSource() {

   586                 return null;

   587             }

   588 

   589             @DefinedBy(Api.COMPILER)

   590             public long getPosition() {

   591                 return Diagnostic.NOPOS;

   592             }

   593 

   594             @DefinedBy(Api.COMPILER)

   595             public long getStartPosition() {

   596                 return Diagnostic.NOPOS;

   597             }

   598 

   599             @DefinedBy(Api.COMPILER)

   600             public long getEndPosition() {

   601                 return Diagnostic.NOPOS;

   602             }

   603 

   604             @DefinedBy(Api.COMPILER)

   605             public long getLineNumber() {

   606                 return Diagnostic.NOPOS;

   607             }

   608 

   609             @DefinedBy(Api.COMPILER)

   610             public long getColumnNumber() {

   611                 return Diagnostic.NOPOS;

   612             }

   613 

   614             @DefinedBy(Api.COMPILER)

   615             public String getCode() {

   616                 return key;

   617             }

   618 

   619             @DefinedBy(Api.COMPILER)

   620             public String getMessage(Locale locale) {

   621                 return JavahTask.this.getMessage(locale, key, args);

   622             }

   623 

   624         };

   625     }

   626 

   627     private String getMessage(String key, Object... args) {

   628         return getMessage(task_locale, key, args);

   629     }

   630 

   631     private String getMessage(Locale locale, String key, Object... args) {

   632         if (bundles == null) {

   633             // could make this a HashMap<Locale,SoftReference<ResourceBundle>>

   634             // and for efficiency, keep a hard reference to the bundle for the task

   635             // locale

   636             bundles = new HashMap<>();

   637         }

   638 

   639         if (locale == null)

   640             locale = Locale.getDefault();

   641 

   642         ResourceBundle b = bundles.get(locale);

   643         if (b == null) {

   644             try {

   645                 b = ResourceBundle.getBundle("com.sun.tools.javah.resources.l10n", locale);

   646                 bundles.put(locale, b);

   647             } catch (MissingResourceException e) {

   648                 throw new InternalError("Cannot find javah resource bundle for locale " + locale, e);

   649             }

   650         }

   651 

   652         try {

   653             return MessageFormat.format(b.getString(key), args);

   654         } catch (MissingResourceException e) {

   655             return key;

   656             //throw new InternalError(e, key);

   657         }

   658     }

   659 

   660     File ofile;

   661     File odir;

   662     String bootcp;

   663     String usercp;

   664     List<String> classes;

   665     boolean verbose;

   666     boolean noArgs;

   667     boolean help;

   668     boolean trace;

   669     boolean version;

   670     boolean fullVersion;

   671     boolean jni;

   672     boolean llni;

   673     boolean doubleAlign;

   674     boolean force;

   675     Set<String> javac_extras = new LinkedHashSet<>();

   676 

   677     PrintWriter log;

   678     JavaFileManager fileManager;

   679     DiagnosticListener<? super JavaFileObject> diagnosticListener;

   680     Locale task_locale;

   681     Map<Locale, ResourceBundle> bundles;

   682 

   683     private static final String progname = "javah";

   684 

   685     @SupportedAnnotationTypes("*")

   686     class JavahProcessor extends AbstractProcessor {

   687         private Messager messager;

   688 

   689         JavahProcessor(Gen g) {

   690             this.g = g;

   691         }

   692 

   693         @Override @DefinedBy(Api.ANNOTATION_PROCESSING)

   694         public SourceVersion getSupportedSourceVersion() {

   695             // since this is co-bundled with javac, we can assume it supports

   696             // the latest source version

   697             return SourceVersion.latest();

   698         }

   699 

   700         @Override @DefinedBy(Api.ANNOTATION_PROCESSING)

   701         public void init(ProcessingEnvironment pEnv) {

   702             super.init(pEnv);

   703             messager  = processingEnv.getMessager();

   704         }

   705 

   706         @DefinedBy(Api.ANNOTATION_PROCESSING)

   707         public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {

   708             try {

   709                 Set<TypeElement> classes = getAllClasses(ElementFilter.typesIn(roundEnv.getRootElements()));

   710                 if (classes.size() > 0) {

   711                     checkMethodParameters(classes);

   712                     g.setProcessingEnvironment(processingEnv);

   713                     g.setClasses(classes);

   714                     g.run();

   715                 }

   716             } catch (CompletionFailure cf) {

   717                 messager.printMessage(ERROR, getMessage("class.not.found", cf.sym.getQualifiedName().toString()));

   718             } catch (ClassNotFoundException cnfe) {

   719                 messager.printMessage(ERROR, getMessage("class.not.found", cnfe.getMessage()));

   720             } catch (IOException ioe) {

   721                 messager.printMessage(ERROR, getMessage("io.exception", ioe.getMessage()));

   722             } catch (Util.Exit e) {

   723                 exit = e;

   724             }

   725 

   726             return true;

   727         }

   728 

   729         private Set<TypeElement> getAllClasses(Set<? extends TypeElement> classes) {

   730             Set<TypeElement> allClasses = new LinkedHashSet<>();

   731             getAllClasses0(classes, allClasses);

   732             return allClasses;

   733         }

   734 

   735         private void getAllClasses0(Iterable<? extends TypeElement> classes, Set<TypeElement> allClasses) {

   736             for (TypeElement c: classes) {

   737                 allClasses.add(c);

   738                 getAllClasses0(ElementFilter.typesIn(c.getEnclosedElements()), allClasses);

   739             }

   740         }

   741 

   742         // 4942232:

   743         // check that classes exist for all the parameters of native methods

   744         private void checkMethodParameters(Set<TypeElement> classes) {

   745             Types types = processingEnv.getTypeUtils();

   746             for (TypeElement te: classes) {

   747                 for (ExecutableElement ee: ElementFilter.methodsIn(te.getEnclosedElements())) {

   748                     for (VariableElement ve: ee.getParameters()) {

   749                         TypeMirror tm = ve.asType();

   750                         checkMethodParametersVisitor.visit(tm, types);

   751                     }

   752                 }

   753             }

   754         }

   755 

   756         private TypeVisitor<Void,Types> checkMethodParametersVisitor =

   757                 new SimpleTypeVisitor9<Void,Types>() {

   758             @Override @DefinedBy(Api.LANGUAGE_MODEL)

   759             public Void visitArray(ArrayType t, Types types) {

   760                 visit(t.getComponentType(), types);

   761                 return null;

   762             }

   763             @Override @DefinedBy(Api.LANGUAGE_MODEL)

   764             public Void visitDeclared(DeclaredType t, Types types) {

   765                 t.asElement().getKind(); // ensure class exists

   766                 for (TypeMirror st: types.directSupertypes(t))

   767                     visit(st, types);

   768                 return null;

   769             }

   770         };

   771 

   772         private Gen g;

   773         private Util.Exit exit;

   774     }

   775 }