jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/processing/JavacProcessingEnvironment.java@f3323b1c65ee

6929404: Filer.getResource(SOURCE_PATH, ...) does not work when -sourcepath contains >1 entry
Reviewed-by: darcy

     1 /*

     2  * Copyright (c) 2005, 2009, 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  */

    26 package com.sun.tools.javac.processing;

    28 import java.lang.reflect.*;

    29 import java.util.*;

    30 import java.util.regex.*;

    32 import java.net.URL;

    33 import java.io.Closeable;

    34 import java.io.File;

    35 import java.io.PrintWriter;

    36 import java.io.IOException;

    37 import java.net.MalformedURLException;

    38 import java.io.StringWriter;

    40 import javax.annotation.processing.*;

    41 import javax.lang.model.SourceVersion;

    42 import javax.lang.model.element.AnnotationMirror;

    43 import javax.lang.model.element.Element;

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

    45 import javax.lang.model.element.PackageElement;

    46 import javax.lang.model.util.*;

    47 import javax.tools.JavaFileManager;

    48 import javax.tools.StandardJavaFileManager;

    49 import javax.tools.JavaFileObject;

    50 import javax.tools.DiagnosticListener;

    52 import com.sun.source.util.AbstractTypeProcessor;

    53 import com.sun.source.util.TaskEvent;

    54 import com.sun.source.util.TaskListener;

    55 import com.sun.tools.javac.api.JavacTaskImpl;

    56 import com.sun.tools.javac.code.*;

    57 import com.sun.tools.javac.code.Symbol.*;

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

    59 import com.sun.tools.javac.jvm.*;

    60 import com.sun.tools.javac.main.JavaCompiler;

    61 import com.sun.tools.javac.main.JavaCompiler.CompileState;

    62 import com.sun.tools.javac.model.JavacElements;

    63 import com.sun.tools.javac.model.JavacTypes;

    64 import com.sun.tools.javac.parser.*;

    65 import com.sun.tools.javac.tree.*;

    66 import com.sun.tools.javac.tree.JCTree.*;

    67 import com.sun.tools.javac.util.Abort;

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

    69 import com.sun.tools.javac.util.Convert;

    70 import com.sun.tools.javac.util.List;

    71 import com.sun.tools.javac.util.Log;

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

    73 import com.sun.tools.javac.util.Name;

    74 import com.sun.tools.javac.util.Names;

    75 import com.sun.tools.javac.util.Options;

    77 import static javax.tools.StandardLocation.*;

    79 /**

    80  * Objects of this class hold and manage the state needed to support

    81  * annotation processing.

    82  *

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

    84  * If you write code that depends on this, you do so at your own risk.

    85  * This code and its internal interfaces are subject to change or

    86  * deletion without notice.</b>

    87  */

    88 public class JavacProcessingEnvironment implements ProcessingEnvironment, Closeable {

    89     Options options;

    91     private final boolean printProcessorInfo;

    92     private final boolean printRounds;

    93     private final boolean verbose;

    94     private final boolean lint;

    95     private final boolean procOnly;

    96     private final boolean fatalErrors;

    97     private final boolean werror;

    98     private boolean foundTypeProcessors;

   100     private final JavacFiler filer;

   101     private final JavacMessager messager;

   102     private final JavacElements elementUtils;

   103     private final JavacTypes typeUtils;

   105     /**

   106      * Holds relevant state history of which processors have been

   107      * used.

   108      */

   109     private DiscoveredProcessors discoveredProcs;

   111     /**

   112      * Map of processor-specific options.

   113      */

   114     private final Map<String, String> processorOptions;

   116     /**

   117      */

   118     private final Set<String> unmatchedProcessorOptions;

   120     /**

   121      * Annotations implicitly processed and claimed by javac.

   122      */

   123     private final Set<String> platformAnnotations;

   125     /**

   126      * Set of packages given on command line.

   127      */

   128     private Set<PackageSymbol> specifiedPackages = Collections.emptySet();

   130     /** The log to be used for error reporting.

   131      */

   132     Log log;

   134     /**

   135      * Source level of the compile.

   136      */

   137     Source source;

   139     private ClassLoader processorClassLoader;

   141     /**

   142      * JavacMessages object used for localization

   143      */

   144     private JavacMessages messages;

   146     private Context context;

   148     public JavacProcessingEnvironment(Context context, Iterable<? extends Processor> processors) {

   149         options = Options.instance(context);

   150         this.context = context;

   151         log = Log.instance(context);

   152         source = Source.instance(context);

   153         printProcessorInfo = options.get("-XprintProcessorInfo") != null;

   154         printRounds = options.get("-XprintRounds") != null;

   155         verbose = options.get("-verbose") != null;

   156         lint = options.lint("processing");

   157         procOnly = options.get("-proc:only") != null ||

   158             options.get("-Xprint") != null;

   159         fatalErrors = options.get("fatalEnterError") != null;

   160         werror = options.get("-Werror") != null;

   161         platformAnnotations = initPlatformAnnotations();

   162         foundTypeProcessors = false;

   164         // Initialize services before any processors are initialzied

   165         // in case processors use them.

   166         filer = new JavacFiler(context);

   167         messager = new JavacMessager(context, this);

   168         elementUtils = new JavacElements(context);

   169         typeUtils = new JavacTypes(context);

   170         processorOptions = initProcessorOptions(context);

   171         unmatchedProcessorOptions = initUnmatchedProcessorOptions();

   172         messages = JavacMessages.instance(context);

   173         initProcessorIterator(context, processors);

   174     }

   176     private Set<String> initPlatformAnnotations() {

   177         Set<String> platformAnnotations = new HashSet<String>();

   178         platformAnnotations.add("java.lang.Deprecated");

   179         platformAnnotations.add("java.lang.Override");

   180         platformAnnotations.add("java.lang.SuppressWarnings");

   181         platformAnnotations.add("java.lang.annotation.Documented");

   182         platformAnnotations.add("java.lang.annotation.Inherited");

   183         platformAnnotations.add("java.lang.annotation.Retention");

   184         platformAnnotations.add("java.lang.annotation.Target");

   185         return Collections.unmodifiableSet(platformAnnotations);

   186     }

   188     private void initProcessorIterator(Context context, Iterable<? extends Processor> processors) {

   189         Log   log   = Log.instance(context);

   190         Iterator<? extends Processor> processorIterator;

   192         if (options.get("-Xprint") != null) {

   193             try {

   194                 Processor processor = PrintingProcessor.class.newInstance();

   195                 processorIterator = List.of(processor).iterator();

   196             } catch (Throwable t) {

   197                 AssertionError assertError =

   198                     new AssertionError("Problem instantiating PrintingProcessor.");

   199                 assertError.initCause(t);

   200                 throw assertError;

   201             }

   202         } else if (processors != null) {

   203             processorIterator = processors.iterator();

   204         } else {

   205             String processorNames = options.get("-processor");

   206             JavaFileManager fileManager = context.get(JavaFileManager.class);

   207             try {

   208                 // If processorpath is not explicitly set, use the classpath.

   209                 processorClassLoader = fileManager.hasLocation(ANNOTATION_PROCESSOR_PATH)

   210                     ? fileManager.getClassLoader(ANNOTATION_PROCESSOR_PATH)

   211                     : fileManager.getClassLoader(CLASS_PATH);

   213                 /*

   214                  * If the "-processor" option is used, search the appropriate

   215                  * path for the named class.  Otherwise, use a service

   216                  * provider mechanism to create the processor iterator.

   217                  */

   218                 if (processorNames != null) {

   219                     processorIterator = new NameProcessIterator(processorNames, processorClassLoader, log);

   220                 } else {

   221                     processorIterator = new ServiceIterator(processorClassLoader, log);

   222                 }

   223             } catch (SecurityException e) {

   224                 /*

   225                  * A security exception will occur if we can't create a classloader.

   226                  * Ignore the exception if, with hindsight, we didn't need it anyway

   227                  * (i.e. no processor was specified either explicitly, or implicitly,

   228                  * in service configuration file.) Otherwise, we cannot continue.

   229                  */

   230                 processorIterator = handleServiceLoaderUnavailability("proc.cant.create.loader", e);

   231             }

   232         }

   233         discoveredProcs = new DiscoveredProcessors(processorIterator);

   234     }

   236     /**

   237      * Returns an empty processor iterator if no processors are on the

   238      * relevant path, otherwise if processors are present, logs an

   239      * error.  Called when a service loader is unavailable for some

   240      * reason, either because a service loader class cannot be found

   241      * or because a security policy prevents class loaders from being

   242      * created.

   243      *

   244      * @param key The resource key to use to log an error message

   245      * @param e   If non-null, pass this exception to Abort

   246      */

   247     private Iterator<Processor> handleServiceLoaderUnavailability(String key, Exception e) {

   248         JavaFileManager fileManager = context.get(JavaFileManager.class);

   250         if (fileManager instanceof JavacFileManager) {

   251             StandardJavaFileManager standardFileManager = (JavacFileManager) fileManager;

   252             Iterable<? extends File> workingPath = fileManager.hasLocation(ANNOTATION_PROCESSOR_PATH)

   253                 ? standardFileManager.getLocation(ANNOTATION_PROCESSOR_PATH)

   254                 : standardFileManager.getLocation(CLASS_PATH);

   256             if (needClassLoader(options.get("-processor"), workingPath) )

   257                 handleException(key, e);

   259         } else {

   260             handleException(key, e);

   261         }

   263         java.util.List<Processor> pl = Collections.emptyList();

   264         return pl.iterator();

   265     }

   267     /**

   268      * Handle a security exception thrown during initializing the

   269      * Processor iterator.

   270      */

   271     private void handleException(String key, Exception e) {

   272         if (e != null) {

   273             log.error(key, e.getLocalizedMessage());

   274             throw new Abort(e);

   275         } else {

   276             log.error(key);

   277             throw new Abort();

   278         }

   279     }

   281     /**

   282      * Use a service loader appropriate for the platform to provide an

   283      * iterator over annotations processors.  If

   284      * java.util.ServiceLoader is present use it, otherwise, use

   285      * sun.misc.Service, otherwise fail if a loader is needed.

   286      */

   287     private class ServiceIterator implements Iterator<Processor> {

   288         // The to-be-wrapped iterator.

   289         private Iterator<?> iterator;

   290         private Log log;

   291         private Class<?> loaderClass;

   292         private boolean jusl;

   293         private Object loader;

   295         ServiceIterator(ClassLoader classLoader, Log log) {

   296             String loadMethodName;

   298             this.log = log;

   299             try {

   300                 try {

   301                     loaderClass = Class.forName("java.util.ServiceLoader");

   302                     loadMethodName = "load";

   303                     jusl = true;

   304                 } catch (ClassNotFoundException cnfe) {

   305                     try {

   306                         loaderClass = Class.forName("sun.misc.Service");

   307                         loadMethodName = "providers";

   308                         jusl = false;

   309                     } catch (ClassNotFoundException cnfe2) {

   310                         // Fail softly if a loader is not actually needed.

   311                         this.iterator = handleServiceLoaderUnavailability("proc.no.service",

   312                                                                           null);

   313                         return;

   314                     }

   315                 }

   317                 // java.util.ServiceLoader.load or sun.misc.Service.providers

   318                 Method loadMethod = loaderClass.getMethod(loadMethodName,

   319                                                           Class.class,

   320                                                           ClassLoader.class);

   322                 Object result = loadMethod.invoke(null,

   323                                                   Processor.class,

   324                                                   classLoader);

   326                 // For java.util.ServiceLoader, we have to call another

   327                 // method to get the iterator.

   328                 if (jusl) {

   329                     loader = result; // Store ServiceLoader to call reload later

   330                     Method m = loaderClass.getMethod("iterator");

   331                     result = m.invoke(result); // serviceLoader.iterator();

   332                 }

   334                 // The result should now be an iterator.

   335                 this.iterator = (Iterator<?>) result;

   336             } catch (Throwable t) {

   337                 log.error("proc.service.problem");

   338                 throw new Abort(t);

   339             }

   340         }

   342         public boolean hasNext() {

   343             try {

   344                 return iterator.hasNext();

   345             } catch (Throwable t) {

   346                 if ("ServiceConfigurationError".

   347                     equals(t.getClass().getSimpleName())) {

   348                     log.error("proc.bad.config.file", t.getLocalizedMessage());

   349                 }

   350                 throw new Abort(t);

   351             }

   352         }

   354         public Processor next() {

   355             try {

   356                 return (Processor)(iterator.next());

   357             } catch (Throwable t) {

   358                 if ("ServiceConfigurationError".

   359                     equals(t.getClass().getSimpleName())) {

   360                     log.error("proc.bad.config.file", t.getLocalizedMessage());

   361                 } else {

   362                     log.error("proc.processor.constructor.error", t.getLocalizedMessage());

   363                 }

   364                 throw new Abort(t);

   365             }

   366         }

   368         public void remove() {

   369             throw new UnsupportedOperationException();

   370         }

   372         public void close() {

   373             if (jusl) {

   374                 try {

   375                     // Call java.util.ServiceLoader.reload

   376                     Method reloadMethod = loaderClass.getMethod("reload");

   377                     reloadMethod.invoke(loader);

   378                 } catch(Exception e) {

   379                     ; // Ignore problems during a call to reload.

   380                 }

   381             }

   382         }

   383     }

   386     private static class NameProcessIterator implements Iterator<Processor> {

   387         Processor nextProc = null;

   388         Iterator<String> names;

   389         ClassLoader processorCL;

   390         Log log;

   392         NameProcessIterator(String names, ClassLoader processorCL, Log log) {

   393             this.names = Arrays.asList(names.split(",")).iterator();

   394             this.processorCL = processorCL;

   395             this.log = log;

   396         }

   398         public boolean hasNext() {

   399             if (nextProc != null)

   400                 return true;

   401             else {

   402                 if (!names.hasNext())

   403                     return false;

   404                 else {

   405                     String processorName = names.next();

   407                     Processor processor;

   408                     try {

   409                         try {

   410                             processor =

   411                                 (Processor) (processorCL.loadClass(processorName).newInstance());

   412                         } catch (ClassNotFoundException cnfe) {

   413                             log.error("proc.processor.not.found", processorName);

   414                             return false;

   415                         } catch (ClassCastException cce) {

   416                             log.error("proc.processor.wrong.type", processorName);

   417                             return false;

   418                         } catch (Exception e ) {

   419                             log.error("proc.processor.cant.instantiate", processorName);

   420                             return false;

   421                         }

   422                     } catch(Throwable t) {

   423                         throw new AnnotationProcessingError(t);

   424                     }

   425                     nextProc = processor;

   426                     return true;

   427                 }

   429             }

   430         }

   432         public Processor next() {

   433             if (hasNext()) {

   434                 Processor p = nextProc;

   435                 nextProc = null;

   436                 return p;

   437             } else

   438                 throw new NoSuchElementException();

   439         }

   441         public void remove () {

   442             throw new UnsupportedOperationException();

   443         }

   444     }

   446     public boolean atLeastOneProcessor() {

   447         return discoveredProcs.iterator().hasNext();

   448     }

   450     private Map<String, String> initProcessorOptions(Context context) {

   451         Options options = Options.instance(context);

   452         Set<String> keySet = options.keySet();

   453         Map<String, String> tempOptions = new LinkedHashMap<String, String>();

   455         for(String key : keySet) {

   456             if (key.startsWith("-A") && key.length() > 2) {

   457                 int sepIndex = key.indexOf('=');

   458                 String candidateKey = null;

   459                 String candidateValue = null;

   461                 if (sepIndex == -1)

   462                     candidateKey = key.substring(2);

   463                 else if (sepIndex >= 3) {

   464                     candidateKey = key.substring(2, sepIndex);

   465                     candidateValue = (sepIndex < key.length()-1)?

   466                         key.substring(sepIndex+1) : null;

   467                 }

   468                 tempOptions.put(candidateKey, candidateValue);

   469             }

   470         }

   472         return Collections.unmodifiableMap(tempOptions);

   473     }

   475     private Set<String> initUnmatchedProcessorOptions() {

   476         Set<String> unmatchedProcessorOptions = new HashSet<String>();

   477         unmatchedProcessorOptions.addAll(processorOptions.keySet());

   478         return unmatchedProcessorOptions;

   479     }

   481     /**

   482      * State about how a processor has been used by the tool.  If a

   483      * processor has been used on a prior round, its process method is

   484      * called on all subsequent rounds, perhaps with an empty set of

   485      * annotations to process.  The {@code annotatedSupported} method

   486      * caches the supported annotation information from the first (and

   487      * only) getSupportedAnnotationTypes call to the processor.

   488      */

   489     static class ProcessorState {

   490         public Processor processor;

   491         public boolean   contributed;

   492         private ArrayList<Pattern> supportedAnnotationPatterns;

   493         private ArrayList<String>  supportedOptionNames;

   495         ProcessorState(Processor p, Log log, Source source, ProcessingEnvironment env) {

   496             processor = p;

   497             contributed = false;

   499             try {

   500                 processor.init(env);

   502                 checkSourceVersionCompatibility(source, log);

   504                 supportedAnnotationPatterns = new ArrayList<Pattern>();

   505                 for (String importString : processor.getSupportedAnnotationTypes()) {

   506                     supportedAnnotationPatterns.add(importStringToPattern(importString,

   507                                                                           processor,

   508                                                                           log));

   509                 }

   511                 supportedOptionNames = new ArrayList<String>();

   512                 for (String optionName : processor.getSupportedOptions() ) {

   513                     if (checkOptionName(optionName, log))

   514                         supportedOptionNames.add(optionName);

   515                 }

   517             } catch (Throwable t) {

   518                 throw new AnnotationProcessingError(t);

   519             }

   520         }

   522         /**

   523          * Checks whether or not a processor's source version is

   524          * compatible with the compilation source version.  The

   525          * processor's source version needs to be greater than or

   526          * equal to the source version of the compile.

   527          */

   528         private void checkSourceVersionCompatibility(Source source, Log log) {

   529             SourceVersion procSourceVersion = processor.getSupportedSourceVersion();

   531             if (procSourceVersion.compareTo(Source.toSourceVersion(source)) < 0 )  {

   532                 log.warning("proc.processor.incompatible.source.version",

   533                             procSourceVersion,

   534                             processor.getClass().getName(),

   535                             source.name);

   536             }

   537         }

   539         private boolean checkOptionName(String optionName, Log log) {

   540             boolean valid = isValidOptionName(optionName);

   541             if (!valid)

   542                 log.error("proc.processor.bad.option.name",

   543                             optionName,

   544                             processor.getClass().getName());

   545             return valid;

   546         }

   548         public boolean annotationSupported(String annotationName) {

   549             for(Pattern p: supportedAnnotationPatterns) {

   550                 if (p.matcher(annotationName).matches())

   551                     return true;

   552             }

   553             return false;

   554         }

   556         /**

   557          * Remove options that are matched by this processor.

   558          */

   559         public void removeSupportedOptions(Set<String> unmatchedProcessorOptions) {

   560             unmatchedProcessorOptions.removeAll(supportedOptionNames);

   561         }

   562     }

   564     // TODO: These two classes can probably be rewritten better...

   565     /**

   566      * This class holds information about the processors that have

   567      * been discoverd so far as well as the means to discover more, if

   568      * necessary.  A single iterator should be used per round of

   569      * annotation processing.  The iterator first visits already

   570      * discovered processors then fails over to the service provider

   571      * mechanism if additional queries are made.

   572      */

   573     class DiscoveredProcessors implements Iterable<ProcessorState> {

   575         class ProcessorStateIterator implements Iterator<ProcessorState> {

   576             DiscoveredProcessors psi;

   577             Iterator<ProcessorState> innerIter;

   578             boolean onProcInterator;

   580             ProcessorStateIterator(DiscoveredProcessors psi) {

   581                 this.psi = psi;

   582                 this.innerIter = psi.procStateList.iterator();

   583                 this.onProcInterator = false;

   584             }

   586             public ProcessorState next() {

   587                 if (!onProcInterator) {

   588                     if (innerIter.hasNext())

   589                         return innerIter.next();

   590                     else

   591                         onProcInterator = true;

   592                 }

   594                 if (psi.processorIterator.hasNext()) {

   595                     ProcessorState ps = new ProcessorState(psi.processorIterator.next(),

   596                                                            log, source, JavacProcessingEnvironment.this);

   597                     psi.procStateList.add(ps);

   598                     return ps;

   599                 } else

   600                     throw new NoSuchElementException();

   601             }

   603             public boolean hasNext() {

   604                 if (onProcInterator)

   605                     return  psi.processorIterator.hasNext();

   606                 else

   607                     return innerIter.hasNext() || psi.processorIterator.hasNext();

   608             }

   610             public void remove () {

   611                 throw new UnsupportedOperationException();

   612             }

   614             /**

   615              * Run all remaining processors on the procStateList that

   616              * have not already run this round with an empty set of

   617              * annotations.

   618              */

   619             public void runContributingProcs(RoundEnvironment re) {

   620                 if (!onProcInterator) {

   621                     Set<TypeElement> emptyTypeElements = Collections.emptySet();

   622                     while(innerIter.hasNext()) {

   623                         ProcessorState ps = innerIter.next();

   624                         if (ps.contributed)

   625                             callProcessor(ps.processor, emptyTypeElements, re);

   626                     }

   627                 }

   628             }

   629         }

   631         Iterator<? extends Processor> processorIterator;

   632         ArrayList<ProcessorState>  procStateList;

   634         public ProcessorStateIterator iterator() {

   635             return new ProcessorStateIterator(this);

   636         }

   638         DiscoveredProcessors(Iterator<? extends Processor> processorIterator) {

   639             this.processorIterator = processorIterator;

   640             this.procStateList = new ArrayList<ProcessorState>();

   641         }

   643         /**

   644          * Free jar files, etc. if using a service loader.

   645          */

   646         public void close() {

   647             if (processorIterator != null &&

   648                 processorIterator instanceof ServiceIterator) {

   649                 ((ServiceIterator) processorIterator).close();

   650             }

   651         }

   652     }

   654     private void discoverAndRunProcs(Context context,

   655                                      Set<TypeElement> annotationsPresent,

   656                                      List<ClassSymbol> topLevelClasses,

   657                                      List<PackageSymbol> packageInfoFiles) {

   658         Map<String, TypeElement> unmatchedAnnotations =

   659             new HashMap<String, TypeElement>(annotationsPresent.size());

   661         for(TypeElement a  : annotationsPresent) {

   662                 unmatchedAnnotations.put(a.getQualifiedName().toString(),

   663                                          a);

   664         }

   666         // Give "*" processors a chance to match

   667         if (unmatchedAnnotations.size() == 0)

   668             unmatchedAnnotations.put("", null);

   670         DiscoveredProcessors.ProcessorStateIterator psi = discoveredProcs.iterator();

   671         // TODO: Create proper argument values; need past round

   672         // information to fill in this constructor.  Note that the 1

   673         // st round of processing could be the last round if there

   674         // were parse errors on the initial source files; however, we

   675         // are not doing processing in that case.

   677         Set<Element> rootElements = new LinkedHashSet<Element>();

   678         rootElements.addAll(topLevelClasses);

   679         rootElements.addAll(packageInfoFiles);

   680         rootElements = Collections.unmodifiableSet(rootElements);

   682         RoundEnvironment renv = new JavacRoundEnvironment(false,

   683                                                           false,

   684                                                           rootElements,

   685                                                           JavacProcessingEnvironment.this);

   687         while(unmatchedAnnotations.size() > 0 && psi.hasNext() ) {

   688             ProcessorState ps = psi.next();

   689             Set<String>  matchedNames = new HashSet<String>();

   690             Set<TypeElement> typeElements = new LinkedHashSet<TypeElement>();

   692             for (Map.Entry<String, TypeElement> entry: unmatchedAnnotations.entrySet()) {

   693                 String unmatchedAnnotationName = entry.getKey();

   694                 if (ps.annotationSupported(unmatchedAnnotationName) ) {

   695                     matchedNames.add(unmatchedAnnotationName);

   696                     TypeElement te = entry.getValue();

   697                     if (te != null)

   698                         typeElements.add(te);

   699                 }

   700             }

   702             if (matchedNames.size() > 0 || ps.contributed) {

   703                 foundTypeProcessors = foundTypeProcessors || (ps.processor instanceof AbstractTypeProcessor);

   704                 boolean processingResult = callProcessor(ps.processor, typeElements, renv);

   705                 ps.contributed = true;

   706                 ps.removeSupportedOptions(unmatchedProcessorOptions);

   708                 if (printProcessorInfo || verbose) {

   709                     log.printNoteLines("x.print.processor.info",

   710                             ps.processor.getClass().getName(),

   711                             matchedNames.toString(),

   712                             processingResult);

   713                 }

   715                 if (processingResult) {

   716                     unmatchedAnnotations.keySet().removeAll(matchedNames);

   717                 }

   719             }

   720         }

   721         unmatchedAnnotations.remove("");

   723         if (lint && unmatchedAnnotations.size() > 0) {

   724             // Remove annotations processed by javac

   725             unmatchedAnnotations.keySet().removeAll(platformAnnotations);

   726             if (unmatchedAnnotations.size() > 0) {

   727                 log = Log.instance(context);

   728                 log.warning("proc.annotations.without.processors",

   729                             unmatchedAnnotations.keySet());

   730             }

   731         }

   733         // Run contributing processors that haven't run yet

   734         psi.runContributingProcs(renv);

   736         // Debugging

   737         if (options.get("displayFilerState") != null)

   738             filer.displayState();

   739     }

   741     /**

   742      * Computes the set of annotations on the symbol in question.

   743      * Leave class public for external testing purposes.

   744      */

   745     public static class ComputeAnnotationSet extends

   746         ElementScanner7<Set<TypeElement>, Set<TypeElement>> {

   747         final Elements elements;

   749         public ComputeAnnotationSet(Elements elements) {

   750             super();

   751             this.elements = elements;

   752         }

   754         @Override

   755         public Set<TypeElement> visitPackage(PackageElement e, Set<TypeElement> p) {

   756             // Don't scan enclosed elements of a package

   757             return p;

   758         }

   760         @Override

   761         public Set<TypeElement> scan(Element e, Set<TypeElement> p) {

   762             for (AnnotationMirror annotationMirror :

   763                      elements.getAllAnnotationMirrors(e) ) {

   764                 Element e2 = annotationMirror.getAnnotationType().asElement();

   765                 p.add((TypeElement) e2);

   766             }

   767             return super.scan(e, p);

   768         }

   769     }

   771     private boolean callProcessor(Processor proc,

   772                                          Set<? extends TypeElement> tes,

   773                                          RoundEnvironment renv) {

   774         try {

   775             return proc.process(tes, renv);

   776         } catch (CompletionFailure ex) {

   777             StringWriter out = new StringWriter();

   778             ex.printStackTrace(new PrintWriter(out));

   779             log.error("proc.cant.access", ex.sym, ex.getDetailValue(), out.toString());

   780             return false;

   781         } catch (Throwable t) {

   782             throw new AnnotationProcessingError(t);

   783         }

   784     }

   786     /**

   787      * Helper object for a single round of annotation processing.

   788      */

   789     class Round {

   790         /** The round number. */

   791         final int number;

   792         /** The context for the round. */

   793         final Context context;

   794         /** The compiler for the round. */

   795         final JavaCompiler compiler;

   796         /** The log for the round. */

   797         final Log log;

   798         /** The number of warnings in the previous round. */

   799         final int priorWarnings;

   801         /** The ASTs to be compiled. */

   802         List<JCCompilationUnit> roots;

   803         /** The classes to be compiler that have were generated. */

   804         Map<String, JavaFileObject> genClassFiles;

   806         /** The set of annotations to be processed this round. */

   807         Set<TypeElement> annotationsPresent;

   808         /** The set of top level classes to be processed this round. */

   809         List<ClassSymbol> topLevelClasses;

   810         /** The set of package-info files to be processed this round. */

   811         List<PackageSymbol> packageInfoFiles;

   813         /** Create a round (common code). */

   814         private Round(Context context, int number, int priorWarnings) {

   815             this.context = context;

   816             this.number = number;

   817             this.priorWarnings = priorWarnings;

   819             compiler = JavaCompiler.instance(context);

   820             log = Log.instance(context);

   822             // the following is for the benefit of JavacProcessingEnvironment.getContext()

   823             JavacProcessingEnvironment.this.context = context;

   825             // the following will be populated as needed

   826             topLevelClasses  = List.nil();

   827             packageInfoFiles = List.nil();

   828         }

   830         /** Create the first round. */

   831         Round(Context context, List<JCCompilationUnit> roots, List<ClassSymbol> classSymbols) {

   832             this(context, 1, 0);

   833             this.roots = roots;

   834             genClassFiles = new HashMap<String,JavaFileObject>();

   836             compiler.todo.clear(); // free the compiler's resources

   838             // The reverse() in the following line is to maintain behavioural

   839             // compatibility with the previous revision of the code. Strictly speaking,

   840             // it should not be necessary, but a javah golden file test fails without it.

   841             topLevelClasses =

   842                 getTopLevelClasses(roots).prependList(classSymbols.reverse());

   844             packageInfoFiles = getPackageInfoFiles(roots);

   846             findAnnotationsPresent();

   847         }

   849         /** Create a new round. */

   850         private Round(Round prev,

   851                 Set<JavaFileObject> newSourceFiles, Map<String,JavaFileObject> newClassFiles)

   852                 throws IOException {

   853             this(prev.nextContext(), prev.number+1, prev.compiler.log.nwarnings);

   854             this.genClassFiles = prev.genClassFiles;

   856             updateProcessingState();

   858             List<JCCompilationUnit> parsedFiles = compiler.parseFiles(newSourceFiles);

   859             roots = cleanTrees(prev.roots).appendList(parsedFiles);

   861             // Check for errors after parsing

   862             if (unrecoverableError())

   863                 return;

   865             enterClassFiles(genClassFiles);

   866             List<ClassSymbol> newClasses = enterClassFiles(newClassFiles);

   867             genClassFiles.putAll(newClassFiles);

   868             enterTrees(roots);

   870             if (unrecoverableError())

   871                 return;

   873             topLevelClasses = join(

   874                     getTopLevelClasses(parsedFiles),

   875                     getTopLevelClassesFromClasses(newClasses));

   877             packageInfoFiles = join(

   878                     getPackageInfoFiles(parsedFiles),

   879                     getPackageInfoFilesFromClasses(newClasses));

   881             findAnnotationsPresent();

   882         }

   884         /** Create the next round to be used. */

   885         Round next(Set<JavaFileObject> newSourceFiles, Map<String, JavaFileObject> newClassFiles)

   886                 throws IOException {

   887             try {

   888                 return new Round(this, newSourceFiles, newClassFiles);

   889             } finally {

   890                 compiler.close(false);

   891             }

   892         }

   894         /** Create the compiler to be used for the final compilation. */

   895         JavaCompiler finalCompiler(boolean errorStatus) {

   896             try {

   897                 JavaCompiler c = JavaCompiler.instance(nextContext());

   898                 if (errorStatus) {

   899                     c.log.nwarnings += priorWarnings + compiler.log.nwarnings;

   900                     c.log.nerrors += compiler.log.nerrors;

   901                 }

   902                 return c;

   903             } finally {

   904                 compiler.close(false);

   905             }

   906         }

   908         /** Return the number of errors found so far in this round.

   909          * This may include uncoverable errors, such as parse errors,

   910          * and transient errors, such as missing symbols. */

   911         int errorCount() {

   912             return compiler.errorCount();

   913         }

   915         /** Return the number of warnings found so far in this round. */

   916         int warningCount() {

   917             return compiler.warningCount();

   918         }

   920         /** Return whether or not an unrecoverable error has occurred. */

   921         boolean unrecoverableError() {

   922             return log.unrecoverableError

   923                     || messager.errorRaised()

   924                     || (werror && log.nwarnings > 0)

   925                     || (fatalErrors && log.nerrors > 0);

   926         }

   928         /** Find the set of annotations present in the set of top level

   929          *  classes and package info files to be processed this round. */

   930         void findAnnotationsPresent() {

   931             ComputeAnnotationSet annotationComputer = new ComputeAnnotationSet(elementUtils);

   932             // Use annotation processing to compute the set of annotations present

   933             annotationsPresent = new LinkedHashSet<TypeElement>();

   934             for (ClassSymbol classSym : topLevelClasses)

   935                 annotationComputer.scan(classSym, annotationsPresent);

   936             for (PackageSymbol pkgSym : packageInfoFiles)

   937                 annotationComputer.scan(pkgSym, annotationsPresent);

   938         }

   940         /** Enter a set of generated class files. */

   941         List<ClassSymbol> enterClassFiles(Map<String, JavaFileObject> classFiles) {

   942             ClassReader reader = ClassReader.instance(context);

   943             Names names = Names.instance(context);

   944             List<ClassSymbol> list = List.nil();

   946             for (Map.Entry<String,JavaFileObject> entry : classFiles.entrySet()) {

   947                 Name name = names.fromString(entry.getKey());

   948                 JavaFileObject file = entry.getValue();

   949                 if (file.getKind() != JavaFileObject.Kind.CLASS)

   950                     throw new AssertionError(file);

   951                 ClassSymbol cs;

   952                 if (isPkgInfo(file, JavaFileObject.Kind.CLASS)) {

   953                     Name packageName = Convert.packagePart(name);

   954                     PackageSymbol p = reader.enterPackage(packageName);

   955                     if (p.package_info == null)

   956                         p.package_info = reader.enterClass(Convert.shortName(name), p);

   957                     cs = p.package_info;

   958                     if (cs.classfile == null)

   959                         cs.classfile = file;

   960                 } else

   961                     cs = reader.enterClass(name, file);

   962                 list = list.prepend(cs);

   963             }

   964             return list.reverse();

   965         }

   967         /** Enter a set of syntax trees. */

   968         void enterTrees(List<JCCompilationUnit> roots) {

   969             compiler.enterTrees(roots);

   970         }

   972         /** Run a processing round. */

   973         void run(boolean lastRound, boolean errorStatus) {

   974             printRoundInfo(lastRound);

   976             TaskListener taskListener = context.get(TaskListener.class);

   977             if (taskListener != null)

   978                 taskListener.started(new TaskEvent(TaskEvent.Kind.ANNOTATION_PROCESSING_ROUND));

   980             try {

   981                 if (lastRound) {

   982                     filer.setLastRound(true);

   983                     Set<Element> emptyRootElements = Collections.emptySet(); // immutable

   984                     RoundEnvironment renv = new JavacRoundEnvironment(true,

   985                             errorStatus,

   986                             emptyRootElements,

   987                             JavacProcessingEnvironment.this);

   988                     discoveredProcs.iterator().runContributingProcs(renv);

   989                 } else {

   990                     discoverAndRunProcs(context, annotationsPresent, topLevelClasses, packageInfoFiles);

   991                 }

   992             } finally {

   993                 if (taskListener != null)

   994                     taskListener.finished(new TaskEvent(TaskEvent.Kind.ANNOTATION_PROCESSING_ROUND));

   995             }

   996         }

   998         /** Update the processing state for the current context. */

   999         private void updateProcessingState() {

  1000             filer.newRound(context);

  1001             messager.newRound(context);

  1003             elementUtils.setContext(context);

  1004             typeUtils.setContext(context);

  1005         }

  1007         /** Print info about this round. */

  1008         private void printRoundInfo(boolean lastRound) {

  1009             if (printRounds || verbose) {

  1010                 List<ClassSymbol> tlc = lastRound ? List.<ClassSymbol>nil() : topLevelClasses;

  1011                 Set<TypeElement> ap = lastRound ? Collections.<TypeElement>emptySet() : annotationsPresent;

  1012                 log.printNoteLines("x.print.rounds",

  1013                         number,

  1014                         "{" + tlc.toString(", ") + "}",

  1015                         ap,

  1016                         lastRound);

  1017             }

  1018         }

  1020         /** Get the context for the next round of processing.

  1021          * Important values are propogated from round to round;

  1022          * other values are implicitly reset.

  1023          */

  1024         private Context nextContext() {

  1025             Context next = new Context();

  1027             Options options = Options.instance(context);

  1028             assert options != null;

  1029             next.put(Options.optionsKey, options);

  1031             PrintWriter out = context.get(Log.outKey);

  1032             assert out != null;

  1033             next.put(Log.outKey, out);

  1035             final boolean shareNames = true;

  1036             if (shareNames) {

  1037                 Names names = Names.instance(context);

  1038                 assert names != null;

  1039                 next.put(Names.namesKey, names);

  1040             }

  1042             DiagnosticListener<?> dl = context.get(DiagnosticListener.class);

  1043             if (dl != null)

  1044                 next.put(DiagnosticListener.class, dl);

  1046             TaskListener tl = context.get(TaskListener.class);

  1047             if (tl != null)

  1048                 next.put(TaskListener.class, tl);

  1050             JavaFileManager jfm = context.get(JavaFileManager.class);

  1051             assert jfm != null;

  1052             next.put(JavaFileManager.class, jfm);

  1053             if (jfm instanceof JavacFileManager) {

  1054                 ((JavacFileManager)jfm).setContext(next);

  1055             }

  1057             Names names = Names.instance(context);

  1058             assert names != null;

  1059             next.put(Names.namesKey, names);

  1061             Keywords keywords = Keywords.instance(context);

  1062             assert(keywords != null);

  1063             next.put(Keywords.keywordsKey, keywords);

  1065             JavaCompiler oldCompiler = JavaCompiler.instance(context);

  1066             JavaCompiler nextCompiler = JavaCompiler.instance(next);

  1067             nextCompiler.initRound(oldCompiler);

  1069             JavacTaskImpl task = context.get(JavacTaskImpl.class);

  1070             if (task != null) {

  1071                 next.put(JavacTaskImpl.class, task);

  1072                 task.updateContext(next);

  1073             }

  1075             context.clear();

  1076             return next;

  1077         }

  1078     }

  1081     // TODO: internal catch clauses?; catch and rethrow an annotation

  1082     // processing error

  1083     public JavaCompiler doProcessing(Context context,

  1084                                      List<JCCompilationUnit> roots,

  1085                                      List<ClassSymbol> classSymbols,

  1086                                      Iterable<? extends PackageSymbol> pckSymbols)

  1087         throws IOException {

  1089         TaskListener taskListener = context.get(TaskListener.class);

  1090         log = Log.instance(context);

  1092         Set<PackageSymbol> specifiedPackages = new LinkedHashSet<PackageSymbol>();

  1093         for (PackageSymbol psym : pckSymbols)

  1094             specifiedPackages.add(psym);

  1095         this.specifiedPackages = Collections.unmodifiableSet(specifiedPackages);

  1097         Round round = new Round(context, roots, classSymbols);

  1099         boolean errorStatus;

  1100         boolean moreToDo;

  1101         do {

  1102             // Run processors for round n

  1103             round.run(false, false);

  1105             // Processors for round n have run to completion.

  1106             // Check for errors and whether there is more work to do.

  1107             errorStatus = round.unrecoverableError();

  1108             moreToDo = moreToDo();

  1110             // Set up next round.

  1111             // Copy mutable collections returned from filer.

  1112             round = round.next(

  1113                     new LinkedHashSet<JavaFileObject>(filer.getGeneratedSourceFileObjects()),

  1114                     new LinkedHashMap<String,JavaFileObject>(filer.getGeneratedClasses()));

  1116              // Check for errors during setup.

  1117             if (round.unrecoverableError())

  1118                 errorStatus = true;

  1120         } while (moreToDo && !errorStatus);

  1122         // run last round

  1123         round.run(true, errorStatus);

  1125         filer.warnIfUnclosedFiles();

  1126         warnIfUnmatchedOptions();

  1128         /*

  1129          * If an annotation processor raises an error in a round,

  1130          * that round runs to completion and one last round occurs.

  1131          * The last round may also occur because no more source or

  1132          * class files have been generated.  Therefore, if an error

  1133          * was raised on either of the last *two* rounds, the compile

  1134          * should exit with a nonzero exit code.  The current value of

  1135          * errorStatus holds whether or not an error was raised on the

  1136          * second to last round; errorRaised() gives the error status

  1137          * of the last round.

  1138          */

  1139         if (messager.errorRaised()

  1140                 || werror && round.warningCount() > 0 && round.errorCount() > 0)

  1141             errorStatus = true;

  1143         Set<JavaFileObject> newSourceFiles =

  1144                 new LinkedHashSet<JavaFileObject>(filer.getGeneratedSourceFileObjects());

  1145         roots = cleanTrees(round.roots);

  1147         JavaCompiler compiler = round.finalCompiler(errorStatus);

  1149         if (newSourceFiles.size() > 0)

  1150             roots = roots.appendList(compiler.parseFiles(newSourceFiles));

  1152         errorStatus = errorStatus || (compiler.errorCount() > 0);

  1154         // Free resources

  1155         this.close();

  1157         if (taskListener != null)

  1158             taskListener.finished(new TaskEvent(TaskEvent.Kind.ANNOTATION_PROCESSING));

  1160         if (errorStatus) {

  1161             if (compiler.errorCount() == 0)

  1162                 compiler.log.nerrors++;

  1163             return compiler;

  1164         }

  1166         if (procOnly && !foundTypeProcessors) {

  1167             compiler.todo.clear();

  1168         } else {

  1169             if (procOnly && foundTypeProcessors)

  1170                 compiler.shouldStopPolicy = CompileState.FLOW;

  1172             compiler.enterTrees(roots);

  1173         }

  1175         return compiler;

  1176     }

  1178     private void warnIfUnmatchedOptions() {

  1179         if (!unmatchedProcessorOptions.isEmpty()) {

  1180             log.warning("proc.unmatched.processor.options", unmatchedProcessorOptions.toString());

  1181         }

  1182     }

  1184     /**

  1185      * Free resources related to annotation processing.

  1186      */

  1187     public void close() throws IOException {

  1188         filer.close();

  1189         if (discoveredProcs != null) // Make calling close idempotent

  1190             discoveredProcs.close();

  1191         discoveredProcs = null;

  1192         if (processorClassLoader != null && processorClassLoader instanceof Closeable)

  1193             ((Closeable) processorClassLoader).close();

  1194     }

  1196     private List<ClassSymbol> getTopLevelClasses(List<? extends JCCompilationUnit> units) {

  1197         List<ClassSymbol> classes = List.nil();

  1198         for (JCCompilationUnit unit : units) {

  1199             for (JCTree node : unit.defs) {

  1200                 if (node.getTag() == JCTree.CLASSDEF) {

  1201                     ClassSymbol sym = ((JCClassDecl) node).sym;

  1202                     assert sym != null;

  1203                     classes = classes.prepend(sym);

  1204                 }

  1205             }

  1206         }

  1207         return classes.reverse();

  1208     }

  1210     private List<ClassSymbol> getTopLevelClassesFromClasses(List<? extends ClassSymbol> syms) {

  1211         List<ClassSymbol> classes = List.nil();

  1212         for (ClassSymbol sym : syms) {

  1213             if (!isPkgInfo(sym)) {

  1214                 classes = classes.prepend(sym);

  1215             }

  1216         }

  1217         return classes.reverse();

  1218     }

  1220     private List<PackageSymbol> getPackageInfoFiles(List<? extends JCCompilationUnit> units) {

  1221         List<PackageSymbol> packages = List.nil();

  1222         for (JCCompilationUnit unit : units) {

  1223             if (isPkgInfo(unit.sourcefile, JavaFileObject.Kind.SOURCE)) {

  1224                 packages = packages.prepend(unit.packge);

  1225             }

  1226         }

  1227         return packages.reverse();

  1228     }

  1230     private List<PackageSymbol> getPackageInfoFilesFromClasses(List<? extends ClassSymbol> syms) {

  1231         List<PackageSymbol> packages = List.nil();

  1232         for (ClassSymbol sym : syms) {

  1233             if (isPkgInfo(sym)) {

  1234                 packages = packages.prepend((PackageSymbol) sym.owner);

  1235             }

  1236         }

  1237         return packages.reverse();

  1238     }

  1240     // avoid unchecked warning from use of varargs

  1241     private static <T> List<T> join(List<T> list1, List<T> list2) {

  1242         return list1.appendList(list2);

  1243     }

  1245     private boolean isPkgInfo(JavaFileObject fo, JavaFileObject.Kind kind) {

  1246         return fo.isNameCompatible("package-info", kind);

  1247     }

  1249     private boolean isPkgInfo(ClassSymbol sym) {

  1250         return isPkgInfo(sym.classfile, JavaFileObject.Kind.CLASS) && (sym.packge().package_info == sym);

  1251     }

  1253     /*

  1254      * Called retroactively to determine if a class loader was required,

  1255      * after we have failed to create one.

  1256      */

  1257     private boolean needClassLoader(String procNames, Iterable<? extends File> workingpath) {

  1258         if (procNames != null)

  1259             return true;

  1261         String procPath;

  1262         URL[] urls = new URL[1];

  1263         for(File pathElement : workingpath) {

  1264             try {

  1265                 urls[0] = pathElement.toURI().toURL();

  1266                 if (ServiceProxy.hasService(Processor.class, urls))

  1267                     return true;

  1268             } catch (MalformedURLException ex) {

  1269                 throw new AssertionError(ex);

  1270             }

  1271             catch (ServiceProxy.ServiceConfigurationError e) {

  1272                 log.error("proc.bad.config.file", e.getLocalizedMessage());

  1273                 return true;

  1274             }

  1275         }

  1277         return false;

  1278     }

  1280     private static <T extends JCTree> List<T> cleanTrees(List<T> nodes) {

  1281         for (T node : nodes)

  1282             treeCleaner.scan(node);

  1283         return nodes;

  1284     }

  1286     private static TreeScanner treeCleaner = new TreeScanner() {

  1287             public void scan(JCTree node) {

  1288                 super.scan(node);

  1289                 if (node != null)

  1290                     node.type = null;

  1291             }

  1292             public void visitTopLevel(JCCompilationUnit node) {

  1293                 node.packge = null;

  1294                 super.visitTopLevel(node);

  1295             }

  1296             public void visitClassDef(JCClassDecl node) {

  1297                 node.sym = null;

  1298                 super.visitClassDef(node);

  1299             }

  1300             public void visitMethodDef(JCMethodDecl node) {

  1301                 node.sym = null;

  1302                 super.visitMethodDef(node);

  1303             }

  1304             public void visitVarDef(JCVariableDecl node) {

  1305                 node.sym = null;

  1306                 super.visitVarDef(node);

  1307             }

  1308             public void visitNewClass(JCNewClass node) {

  1309                 node.constructor = null;

  1310                 super.visitNewClass(node);

  1311             }

  1312             public void visitAssignop(JCAssignOp node) {

  1313                 node.operator = null;

  1314                 super.visitAssignop(node);

  1315             }

  1316             public void visitUnary(JCUnary node) {

  1317                 node.operator = null;

  1318                 super.visitUnary(node);

  1319             }

  1320             public void visitBinary(JCBinary node) {

  1321                 node.operator = null;

  1322                 super.visitBinary(node);

  1323             }

  1324             public void visitSelect(JCFieldAccess node) {

  1325                 node.sym = null;

  1326                 super.visitSelect(node);

  1327             }

  1328             public void visitIdent(JCIdent node) {

  1329                 node.sym = null;

  1330                 super.visitIdent(node);

  1331             }

  1332         };

  1335     private boolean moreToDo() {

  1336         return filer.newFiles();

  1337     }

  1339     /**

  1340      * {@inheritdoc}

  1341      *

  1342      * Command line options suitable for presenting to annotation

  1343      * processors.  "-Afoo=bar" should be "-Afoo" => "bar".

  1344      */

  1345     public Map<String,String> getOptions() {

  1346         return processorOptions;

  1347     }

  1349     public Messager getMessager() {

  1350         return messager;

  1351     }

  1353     public Filer getFiler() {

  1354         return filer;

  1355     }

  1357     public JavacElements getElementUtils() {

  1358         return elementUtils;

  1359     }

  1361     public JavacTypes getTypeUtils() {

  1362         return typeUtils;

  1363     }

  1365     public SourceVersion getSourceVersion() {

  1366         return Source.toSourceVersion(source);

  1367     }

  1369     public Locale getLocale() {

  1370         return messages.getCurrentLocale();

  1371     }

  1373     public Set<Symbol.PackageSymbol> getSpecifiedPackages() {

  1374         return specifiedPackages;

  1375     }

  1377     private static final Pattern allMatches = Pattern.compile(".*");

  1378     public static final Pattern noMatches  = Pattern.compile("(\\P{all})+");

  1380     /**

  1381      * Convert import-style string for supported annotations into a

  1382      * regex matching that string.  If the string is a valid

  1383      * import-style string, return a regex that won't match anything.

  1384      */

  1385     private static Pattern importStringToPattern(String s, Processor p, Log log) {

  1386         if (isValidImportString(s)) {

  1387             return validImportStringToPattern(s);

  1388         } else {

  1389             log.warning("proc.malformed.supported.string", s, p.getClass().getName());

  1390             return noMatches; // won't match any valid identifier

  1391         }

  1392     }

  1394     /**

  1395      * Return true if the argument string is a valid import-style

  1396      * string specifying claimed annotations; return false otherwise.

  1397      */

  1398     public static boolean isValidImportString(String s) {

  1399         if (s.equals("*"))

  1400             return true;

  1402         boolean valid = true;

  1403         String t = s;

  1404         int index = t.indexOf('*');

  1406         if (index != -1) {

  1407             // '*' must be last character...

  1408             if (index == t.length() -1) {

  1409                 // ... any and preceding character must be '.'

  1410                 if ( index-1 >= 0 ) {

  1411                     valid = t.charAt(index-1) == '.';

  1412                     // Strip off ".*$" for identifier checks

  1413                     t = t.substring(0, t.length()-2);

  1414                 }

  1415             } else

  1416                 return false;

  1417         }

  1419         // Verify string is off the form (javaId \.)+ or javaId

  1420         if (valid) {

  1421             String[] javaIds = t.split("\\.", t.length()+2);

  1422             for(String javaId: javaIds)

  1423                 valid &= SourceVersion.isIdentifier(javaId);

  1424         }

  1425         return valid;

  1426     }

  1428     public static Pattern validImportStringToPattern(String s) {

  1429         if (s.equals("*")) {

  1430             return allMatches;

  1431         } else {

  1432             String s_prime = s.replace(".", "\\.");

  1434             if (s_prime.endsWith("*")) {

  1435                 s_prime =  s_prime.substring(0, s_prime.length() - 1) + ".+";

  1436             }

  1438             return Pattern.compile(s_prime);

  1439         }

  1440     }

  1442     /**

  1443      * For internal use only.  This method will be

  1444      * removed without warning.

  1445      */

  1446     public Context getContext() {

  1447         return context;

  1448     }

  1450     public String toString() {

  1451         return "javac ProcessingEnvironment";

  1452     }

  1454     public static boolean isValidOptionName(String optionName) {

  1455         for(String s : optionName.split("\\.", -1)) {

  1456             if (!SourceVersion.isIdentifier(s))

  1457                 return false;

  1458         }

  1459         return true;

  1460     }

  1461 }

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

src/share/classes/com/sun/tools/javac/processing/JavacProcessingEnvironment.java@f3323b1c65ee

src/share/classes/com/sun/tools/javac/processing/JavacProcessingEnvironment.java