1 /*
2 * Copyright (c) 2005, 2025, 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.javac.processing;
27
28 import java.io.Closeable;
29 import java.io.IOException;
30 import java.io.PrintWriter;
31 import java.io.StringWriter;
32 import java.lang.reflect.Method;
33 import java.util.*;
34 import java.util.Map.Entry;
35 import java.util.function.Predicate;
36 import java.util.regex.*;
37
38 import javax.annotation.processing.*;
39 import javax.lang.model.SourceVersion;
40 import javax.lang.model.element.*;
41 import javax.lang.model.util.*;
42 import javax.tools.JavaFileManager;
43 import javax.tools.JavaFileObject;
44 import javax.tools.JavaFileObject.Kind;
45
46 import static javax.tools.StandardLocation.*;
47
48 import com.sun.source.util.TaskEvent;
49 import com.sun.tools.javac.api.MultiTaskListener;
50 import com.sun.tools.javac.code.*;
51 import com.sun.tools.javac.code.DeferredCompletionFailureHandler.Handler;
52 import com.sun.tools.javac.code.Scope.WriteableScope;
53 import com.sun.tools.javac.code.Source.Feature;
54 import com.sun.tools.javac.code.Symbol.*;
55 import com.sun.tools.javac.code.Type.ClassType;
56 import com.sun.tools.javac.code.Types;
57 import com.sun.tools.javac.comp.AttrContext;
58 import com.sun.tools.javac.comp.Check;
59 import com.sun.tools.javac.comp.Enter;
60 import com.sun.tools.javac.comp.Env;
61 import com.sun.tools.javac.comp.Modules;
62 import com.sun.tools.javac.main.JavaCompiler;
63 import com.sun.tools.javac.main.Option;
64 import com.sun.tools.javac.model.JavacElements;
65 import com.sun.tools.javac.model.JavacTypes;
66 import com.sun.tools.javac.platform.PlatformDescription;
67 import com.sun.tools.javac.platform.PlatformDescription.PluginInfo;
68 import com.sun.tools.javac.resources.CompilerProperties.Errors;
69 import com.sun.tools.javac.resources.CompilerProperties.LintWarnings;
70 import com.sun.tools.javac.resources.CompilerProperties.Warnings;
71 import com.sun.tools.javac.tree.*;
72 import com.sun.tools.javac.tree.JCTree.*;
73 import com.sun.tools.javac.util.Abort;
74 import com.sun.tools.javac.util.Assert;
75 import com.sun.tools.javac.util.ClientCodeException;
76 import com.sun.tools.javac.util.Context;
77 import com.sun.tools.javac.util.Convert;
78 import com.sun.tools.javac.util.DefinedBy;
79 import com.sun.tools.javac.util.DefinedBy.Api;
80 import com.sun.tools.javac.util.Iterators;
81 import com.sun.tools.javac.util.JCDiagnostic;
82 import com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag;
83 import com.sun.tools.javac.util.JavacMessages;
84 import com.sun.tools.javac.util.List;
85 import com.sun.tools.javac.util.Log;
86 import com.sun.tools.javac.util.MatchingUtils;
87 import com.sun.tools.javac.util.ModuleHelper;
88 import com.sun.tools.javac.util.Name;
89 import com.sun.tools.javac.util.Names;
90 import com.sun.tools.javac.util.Options;
91
92 import static com.sun.tools.javac.code.Lint.LintCategory.PROCESSING;
93 import static com.sun.tools.javac.code.Kinds.Kind.*;
94 import com.sun.tools.javac.comp.Annotate;
95 import static com.sun.tools.javac.comp.CompileStates.CompileState;
96 import static com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag.*;
97
98 /**
99 * Objects of this class hold and manage the state needed to support
100 * annotation processing.
101 *
102 * <p><b>This is NOT part of any supported API.
103 * If you write code that depends on this, you do so at your own risk.
104 * This code and its internal interfaces are subject to change or
105 * deletion without notice.</b>
106 */
107 public class JavacProcessingEnvironment implements ProcessingEnvironment, Closeable {
108 private final Options options;
109
110 private final boolean printProcessorInfo;
111 private final boolean printRounds;
112 private final boolean verbose;
113 private final boolean fatalErrors;
114 private final boolean werror;
115 private final boolean showResolveErrors;
116
117 private final JavacFiler filer;
118 private final JavacMessager messager;
119 private final JavacElements elementUtils;
120 private final JavacTypes typeUtils;
121 private final JavaCompiler compiler;
122 private final Modules modules;
123 private final Types types;
124 private final Annotate annotate;
125 private final Lint lint;
126
127 /**
128 * Holds relevant state history of which processors have been
129 * used.
130 */
131 private DiscoveredProcessors discoveredProcs;
132
133 /**
134 * Map of processor-specific options.
135 */
136 private final Map<String, String> processorOptions;
137
138 /**
139 */
140 private final Set<String> unmatchedProcessorOptions;
141
142 /**
143 * Annotations implicitly processed and claimed by javac.
144 */
145 private final Set<String> platformAnnotations;
146
147 /**
148 * Set of packages given on command line.
149 */
150 private Set<PackageSymbol> specifiedPackages = Collections.emptySet();
151
152 /** The log to be used for error reporting.
153 */
154 final Log log;
155
156 /** Diagnostic factory.
157 */
158 JCDiagnostic.Factory diags;
159
160 /**
161 * Source level of the compile.
162 */
163 Source source;
164
165 private ClassLoader processorClassLoader;
166 private ServiceLoader<Processor> serviceLoader;
167
168 private final JavaFileManager fileManager;
169
170 /**
171 * JavacMessages object used for localization
172 */
173 private JavacMessages messages;
174
175 private MultiTaskListener taskListener;
176 private final Symtab symtab;
177 private final DeferredCompletionFailureHandler dcfh;
178 private final Names names;
179 private final Enter enter;
180 private final Completer initialCompleter;
181 private final Check chk;
182
183 private final Context context;
184
185 /**
186 * Support for preview language features.
187 */
188 private final Preview preview;
189
190 /** Get the JavacProcessingEnvironment instance for this context. */
191 public static JavacProcessingEnvironment instance(Context context) {
192 JavacProcessingEnvironment instance = context.get(JavacProcessingEnvironment.class);
193 if (instance == null)
194 instance = new JavacProcessingEnvironment(context);
195 return instance;
196 }
197
198 protected JavacProcessingEnvironment(Context context) {
199 this.context = context;
200 context.put(JavacProcessingEnvironment.class, this);
201 log = Log.instance(context);
202 source = Source.instance(context);
203 diags = JCDiagnostic.Factory.instance(context);
204 options = Options.instance(context);
205 printProcessorInfo = options.isSet(Option.XPRINTPROCESSORINFO);
206 printRounds = options.isSet(Option.XPRINTROUNDS);
207 verbose = options.isSet(Option.VERBOSE);
208 lint = Lint.instance(context);
209 compiler = JavaCompiler.instance(context);
210 if (options.isSet(Option.PROC, "only") || options.isSet(Option.XPRINT)) {
211 compiler.shouldStopPolicyIfNoError = CompileState.PROCESS;
212 }
213 fatalErrors = options.isSet("fatalEnterError");
214 showResolveErrors = options.isSet("showResolveErrors");
215 werror = options.isSet(Option.WERROR);
216 fileManager = context.get(JavaFileManager.class);
217 platformAnnotations = initPlatformAnnotations();
218
219 // Initialize services before any processors are initialized
220 // in case processors use them.
221 filer = new JavacFiler(context);
222 messager = new JavacMessager(context, this);
223 elementUtils = JavacElements.instance(context);
224 typeUtils = JavacTypes.instance(context);
225 modules = Modules.instance(context);
226 types = Types.instance(context);
227 annotate = Annotate.instance(context);
228 processorOptions = initProcessorOptions();
229 unmatchedProcessorOptions = initUnmatchedProcessorOptions();
230 messages = JavacMessages.instance(context);
231 taskListener = MultiTaskListener.instance(context);
232 symtab = Symtab.instance(context);
233 dcfh = DeferredCompletionFailureHandler.instance(context);
234 names = Names.instance(context);
235 enter = Enter.instance(context);
236 initialCompleter = ClassFinder.instance(context).getCompleter();
237 chk = Check.instance(context);
238 preview = Preview.instance(context);
239 initProcessorLoader();
240 }
241
242 public void setProcessors(Iterable<? extends Processor> processors) {
243 Assert.checkNull(discoveredProcs);
244 initProcessorIterator(processors);
245 }
246
247 private Set<String> initPlatformAnnotations() {
248 final String module_prefix =
249 Feature.MODULES.allowedInSource(source) ? "java.base/" : "";
250 return Set.of(module_prefix + "java.lang.Deprecated",
251 module_prefix + "java.lang.FunctionalInterface",
252 module_prefix + "java.lang.Override",
253 module_prefix + "java.lang.SafeVarargs",
254 module_prefix + "java.lang.SuppressWarnings",
255
256 module_prefix + "java.lang.annotation.Documented",
257 module_prefix + "java.lang.annotation.Inherited",
258 module_prefix + "java.lang.annotation.Native",
259 module_prefix + "java.lang.annotation.Repeatable",
260 module_prefix + "java.lang.annotation.Retention",
261 module_prefix + "java.lang.annotation.Target",
262
263 module_prefix + "java.io.Serial");
264 }
265
266 private void initProcessorLoader() {
267 if (fileManager.hasLocation(ANNOTATION_PROCESSOR_MODULE_PATH)) {
268 try {
269 serviceLoader = fileManager.getServiceLoader(ANNOTATION_PROCESSOR_MODULE_PATH, Processor.class);
270 } catch (IOException e) {
271 throw new Abort(e);
272 }
273 } else {
274 // If processorpath is not explicitly set, use the classpath.
275 processorClassLoader = fileManager.hasLocation(ANNOTATION_PROCESSOR_PATH)
276 ? fileManager.getClassLoader(ANNOTATION_PROCESSOR_PATH)
277 : fileManager.getClassLoader(CLASS_PATH);
278
279 if (options.isSet("accessInternalAPI"))
280 ModuleHelper.addExports(getClass().getModule(), processorClassLoader.getUnnamedModule());
281
282 if (processorClassLoader != null && processorClassLoader instanceof Closeable closeable) {
283 compiler.closeables = compiler.closeables.prepend(closeable);
284 }
285 }
286 }
287
288 private void initProcessorIterator(Iterable<? extends Processor> processors) {
289 Iterator<? extends Processor> processorIterator;
290
291 if (options.isSet(Option.XPRINT)) {
292 try {
293 processorIterator = List.of(new PrintingProcessor()).iterator();
294 } catch (Throwable t) {
295 throw new AssertionError("Problem instantiating PrintingProcessor.", t);
296 }
297 } else if (processors != null) {
298 processorIterator = processors.iterator();
299 } else {
300 /*
301 * If the "-processor" option is used, search the appropriate
302 * path for the named class. Otherwise, use a service
303 * provider mechanism to create the processor iterator.
304 *
305 * Note: if an explicit processor path is not set,
306 * only the class path and _not_ the module path are
307 * searched for processors.
308 */
309 String processorNames = options.get(Option.PROCESSOR);
310 if (fileManager.hasLocation(ANNOTATION_PROCESSOR_MODULE_PATH)) {
311 processorIterator = (processorNames == null) ?
312 new ServiceIterator(serviceLoader, log) :
313 new NameServiceIterator(serviceLoader, log, processorNames);
314 } else if (processorNames != null) {
315 processorIterator = new NameProcessIterator(processorNames, processorClassLoader, log);
316 } else {
317 processorIterator = new ServiceIterator(processorClassLoader, log);
318 }
319 }
320 PlatformDescription platformProvider = context.get(PlatformDescription.class);
321 java.util.List<Processor> platformProcessors = Collections.emptyList();
322 if (platformProvider != null) {
323 platformProcessors = platformProvider.getAnnotationProcessors()
324 .stream()
325 .map(PluginInfo::getPlugin)
326 .toList();
327 }
328 List<Iterator<? extends Processor>> iterators = List.of(processorIterator,
329 platformProcessors.iterator());
330 Iterator<? extends Processor> compoundIterator =
331 Iterators.createCompoundIterator(iterators, i -> i);
332 discoveredProcs = new DiscoveredProcessors(compoundIterator);
333 }
334
335 public <S> ServiceLoader<S> getServiceLoader(Class<S> service) {
336 if (fileManager.hasLocation(ANNOTATION_PROCESSOR_MODULE_PATH)) {
337 try {
338 return fileManager.getServiceLoader(ANNOTATION_PROCESSOR_MODULE_PATH, service);
339 } catch (IOException e) {
340 throw new Abort(e);
341 }
342 } else {
343 return ServiceLoader.load(service, getProcessorClassLoader());
344 }
345 }
346
347 /**
348 * Use a service loader appropriate for the platform to provide an
349 * iterator over annotations processors; fails if a loader is
350 * needed but unavailable.
351 */
352 private class ServiceIterator implements Iterator<Processor> {
353 Iterator<Processor> iterator;
354 Log log;
355 ServiceLoader<Processor> loader;
356
357 ServiceIterator(ClassLoader classLoader, Log log) {
358 this.log = log;
359 try {
360 loader = ServiceLoader.load(Processor.class, classLoader);
361 this.iterator = loader.iterator();
362 } catch (Throwable t) {
363 log.error(Errors.ProcServiceProblem);
364 throw new Abort(t);
365 }
366 }
367
368 ServiceIterator(ServiceLoader<Processor> loader, Log log) {
369 this.log = log;
370 this.loader = loader;
371 this.iterator = loader.iterator();
372 }
373
374 @Override
375 public boolean hasNext() {
376 try {
377 return internalHasNext();
378 } catch(ServiceConfigurationError sce) {
379 log.error(Errors.ProcBadConfigFile(sce.getLocalizedMessage()));
380 throw new Abort(sce);
381 } catch (UnsupportedClassVersionError ucve) {
382 log.error(Errors.ProcCantLoadClass(ucve.getLocalizedMessage()));
383 throw new Abort(ucve);
384 } catch (ClassFormatError cfe) {
385 log.error(Errors.ProcCantLoadClass(cfe.getLocalizedMessage()));
386 throw new Abort(cfe);
387 } catch (Throwable t) {
388 log.error(Errors.ProcBadConfigFile(t.getLocalizedMessage()));
389 throw new Abort(t);
390 }
391 }
392
393 boolean internalHasNext() {
394 return iterator.hasNext();
395 }
396
397 @Override
398 public Processor next() {
399 try {
400 return internalNext();
401 } catch (ServiceConfigurationError sce) {
402 log.error(Errors.ProcBadConfigFile(sce.getLocalizedMessage()));
403 throw new Abort(sce);
404 } catch (Throwable t) {
405 log.error(Errors.ProcBadConfigFile(t.getLocalizedMessage()));
406 throw new Abort(t);
407 }
408 }
409
410 Processor internalNext() {
411 return iterator.next();
412 }
413
414 @Override
415 public void remove() {
416 throw new UnsupportedOperationException();
417 }
418
419 public void close() {
420 if (loader != null) {
421 try {
422 loader.reload();
423 } catch(Exception e) {
424 // Ignore problems during a call to reload.
425 }
426 }
427 }
428 }
429
430 private class NameServiceIterator extends ServiceIterator {
431 private Map<String, Processor> namedProcessorsMap = new HashMap<>();
432 private Iterator<String> processorNames = null;
433 private Processor nextProc = null;
434
435 public NameServiceIterator(ServiceLoader<Processor> loader, Log log, String theNames) {
436 super(loader, log);
437 this.processorNames = Arrays.asList(theNames.split(",")).iterator();
438 }
439
440 @Override
441 boolean internalHasNext() {
442 if (nextProc != null) {
443 return true;
444 }
445 if (!processorNames.hasNext()) {
446 namedProcessorsMap = null;
447 return false;
448 }
449 String processorName = processorNames.next();
450 Processor theProcessor = namedProcessorsMap.get(processorName);
451 if (theProcessor != null) {
452 namedProcessorsMap.remove(processorName);
453 nextProc = theProcessor;
454 return true;
455 } else {
456 while (iterator.hasNext()) {
457 theProcessor = iterator.next();
458 String name = theProcessor.getClass().getName();
459 if (name.equals(processorName)) {
460 nextProc = theProcessor;
461 return true;
462 } else {
463 namedProcessorsMap.put(name, theProcessor);
464 }
465 }
466 log.error(Errors.ProcProcessorNotFound(processorName));
467 return false;
468 }
469 }
470
471 @Override
472 Processor internalNext() {
473 if (hasNext()) {
474 Processor p = nextProc;
475 nextProc = null;
476 return p;
477 } else {
478 throw new NoSuchElementException();
479 }
480 }
481 }
482
483 private static class NameProcessIterator implements Iterator<Processor> {
484 Processor nextProc = null;
485 Iterator<String> names;
486 ClassLoader processorCL;
487 Log log;
488
489 NameProcessIterator(String names, ClassLoader processorCL, Log log) {
490 this.names = Arrays.asList(names.split(",")).iterator();
491 this.processorCL = processorCL;
492 this.log = log;
493 }
494
495 public boolean hasNext() {
496 if (nextProc != null)
497 return true;
498 else {
499 if (!names.hasNext()) {
500 return false;
501 } else {
502 Processor processor = getNextProcessor(names.next());
503 if (processor == null) {
504 return false;
505 } else {
506 nextProc = processor;
507 return true;
508 }
509 }
510 }
511 }
512
513 private Processor getNextProcessor(String processorName) {
514 try {
515 try {
516 Class<?> processorClass = processorCL.loadClass(processorName);
517 ensureReadable(processorClass);
518 return (Processor) processorClass.getConstructor().newInstance();
519 } catch (ClassNotFoundException cnfe) {
520 log.error(Errors.ProcProcessorNotFound(processorName));
521 return null;
522 } catch (ClassCastException cce) {
523 log.error(Errors.ProcProcessorWrongType(processorName));
524 return null;
525 } catch (Exception e ) {
526 log.error(Errors.ProcProcessorCantInstantiate(processorName));
527 return null;
528 }
529 } catch (ClientCodeException e) {
530 throw e;
531 } catch (Throwable t) {
532 throw new AnnotationProcessingError(t);
533 }
534 }
535
536 public Processor next() {
537 if (hasNext()) {
538 Processor p = nextProc;
539 nextProc = null;
540 return p;
541 } else
542 throw new NoSuchElementException();
543 }
544
545 public void remove () {
546 throw new UnsupportedOperationException();
547 }
548
549 /**
550 * Ensures that the module of the given class is readable to this
551 * module.
552 */
553 private void ensureReadable(Class<?> targetClass) {
554 try {
555 Method getModuleMethod = Class.class.getMethod("getModule");
556 Object thisModule = getModuleMethod.invoke(this.getClass());
557 Object targetModule = getModuleMethod.invoke(targetClass);
558
559 Class<?> moduleClass = getModuleMethod.getReturnType();
560 Method addReadsMethod = moduleClass.getMethod("addReads", moduleClass);
561 addReadsMethod.invoke(thisModule, targetModule);
562 } catch (NoSuchMethodException e) {
563 // ignore
564 } catch (Exception e) {
565 throw new InternalError(e);
566 }
567 }
568 }
569
570 public boolean atLeastOneProcessor() {
571 return discoveredProcs.iterator().hasNext();
572 }
573
574 private Map<String, String> initProcessorOptions() {
575 Set<String> keySet = options.keySet();
576 Map<String, String> tempOptions = new LinkedHashMap<>();
577
578 for(String key : keySet) {
579 if (key.startsWith("-A") && key.length() > 2) {
580 int sepIndex = key.indexOf('=');
581 String candidateKey = null;
582 String candidateValue = null;
583
584 if (sepIndex == -1)
585 candidateKey = key.substring(2);
586 else if (sepIndex >= 3) {
587 candidateKey = key.substring(2, sepIndex);
588 candidateValue = (sepIndex < key.length()-1)?
589 key.substring(sepIndex+1) : null;
590 }
591 tempOptions.put(candidateKey, candidateValue);
592 }
593 }
594
595 PlatformDescription platformProvider = context.get(PlatformDescription.class);
596
597 if (platformProvider != null) {
598 for (PluginInfo<Processor> ap : platformProvider.getAnnotationProcessors()) {
599 tempOptions.putAll(ap.getOptions());
600 }
601 }
602
603 return Collections.unmodifiableMap(tempOptions);
604 }
605
606 private Set<String> initUnmatchedProcessorOptions() {
607 Set<String> unmatchedProcessorOptions = new HashSet<>();
608 unmatchedProcessorOptions.addAll(processorOptions.keySet());
609 return unmatchedProcessorOptions;
610 }
611
612 /**
613 * State about how a processor has been used by the tool. If a
614 * processor has been used on a prior round, its process method is
615 * called on all subsequent rounds, perhaps with an empty set of
616 * annotations to process. The {@code annotationSupported} method
617 * caches the supported annotation information from the first (and
618 * only) getSupportedAnnotationTypes call to the processor.
619 */
620 static class ProcessorState {
621 public Processor processor;
622 public boolean contributed;
623 private Set<String> supportedAnnotationStrings; // Used for warning generation
624 private Set<Pattern> supportedAnnotationPatterns;
625 private Set<String> supportedOptionNames;
626
627 ProcessorState(Processor p, Log log, Source source, DeferredCompletionFailureHandler dcfh,
628 boolean allowModules, ProcessingEnvironment env, Lint lint) {
629 processor = p;
630 contributed = false;
631
632 Handler prevDeferredHandler = dcfh.setHandler(dcfh.userCodeHandler);
633 try {
634 processor.init(env);
635
636 checkSourceVersionCompatibility(source, log);
637
638
639 // Check for direct duplicates in the strings of
640 // supported annotation types. Do not check for
641 // duplicates that would result after stripping of
642 // module prefixes.
643 supportedAnnotationStrings = new LinkedHashSet<>();
644 supportedAnnotationPatterns = new LinkedHashSet<>();
645 for (String annotationPattern : processor.getSupportedAnnotationTypes()) {
646 boolean patternAdded = supportedAnnotationStrings.add(annotationPattern);
647
648 supportedAnnotationPatterns.
649 add(importStringToPattern(allowModules, annotationPattern,
650 processor, log, lint));
651 if (!patternAdded) {
652 lint.logIfEnabled(LintWarnings.ProcDuplicateSupportedAnnotation(annotationPattern,
653 p.getClass().getName()));
654 }
655 }
656
657 // If a processor supports "*", that matches
658 // everything and other entries are redundant. With
659 // more work, it could be checked that the supported
660 // annotation types were otherwise non-overlapping
661 // with each other in other cases, for example "foo.*"
662 // and "foo.bar.*".
663 if (supportedAnnotationPatterns.contains(MatchingUtils.validImportStringToPattern("*")) &&
664 supportedAnnotationPatterns.size() > 1) {
665 lint.logIfEnabled(LintWarnings.ProcRedundantTypesWithWildcard(p.getClass().getName()));
666 }
667
668 supportedOptionNames = new LinkedHashSet<>();
669 for (String optionName : processor.getSupportedOptions() ) {
670 if (checkOptionName(optionName, log)) {
671 boolean optionAdded = supportedOptionNames.add(optionName);
672 if (!optionAdded) {
673 lint.logIfEnabled(LintWarnings.ProcDuplicateOptionName(optionName,
674 p.getClass().getName()));
675 }
676 }
677 }
678
679 } catch (ClientCodeException e) {
680 throw e;
681 } catch (Throwable t) {
682 throw new AnnotationProcessingError(t);
683 } finally {
684 dcfh.setHandler(prevDeferredHandler);
685 }
686 }
687
688 /**
689 * Checks whether or not a processor's source version is
690 * compatible with the compilation source version. The
691 * processor's source version needs to be greater than or
692 * equal to the source version of the compile.
693 */
694 private void checkSourceVersionCompatibility(Source source, Log log) {
695 SourceVersion procSourceVersion = processor.getSupportedSourceVersion();
696 if (procSourceVersion.compareTo(Source.toSourceVersion(source)) < 0 ) {
697 log.warning(Warnings.ProcProcessorIncompatibleSourceVersion(procSourceVersion,
698 processor.getClass().getName(),
699 source.name));
700 }
701 }
702
703 private boolean checkOptionName(String optionName, Log log) {
704 boolean valid = isValidOptionName(optionName);
705 if (!valid)
706 log.error(Errors.ProcProcessorBadOptionName(optionName,
707 processor.getClass().getName()));
708 return valid;
709 }
710
711 public boolean annotationSupported(String annotationName) {
712 for(Pattern p: supportedAnnotationPatterns) {
713 if (p.matcher(annotationName).matches())
714 return true;
715 }
716 return false;
717 }
718
719 /**
720 * Remove options that are matched by this processor.
721 */
722 public void removeSupportedOptions(Set<String> unmatchedProcessorOptions) {
723 unmatchedProcessorOptions.removeAll(supportedOptionNames);
724 }
725 }
726
727 // TODO: These two classes can probably be rewritten better...
728 /**
729 * This class holds information about the processors that have
730 * been discovered so far as well as the means to discover more, if
731 * necessary. A single iterator should be used per round of
732 * annotation processing. The iterator first visits already
733 * discovered processors then fails over to the service provider
734 * mechanism if additional queries are made.
735 */
736 class DiscoveredProcessors implements Iterable<ProcessorState> {
737
738 class ProcessorStateIterator implements Iterator<ProcessorState> {
739 DiscoveredProcessors psi;
740 Iterator<ProcessorState> innerIter;
741 boolean onProcIterator;
742
743 ProcessorStateIterator(DiscoveredProcessors psi) {
744 this.psi = psi;
745 this.innerIter = psi.procStateList.iterator();
746 this.onProcIterator = false;
747 }
748
749 public ProcessorState next() {
750 if (!onProcIterator) {
751 if (innerIter.hasNext())
752 return innerIter.next();
753 else
754 onProcIterator = true;
755 }
756
757 if (psi.processorIterator.hasNext()) {
758 ProcessorState ps = new ProcessorState(psi.processorIterator.next(),
759 log, source, dcfh,
760 Feature.MODULES.allowedInSource(source),
761 JavacProcessingEnvironment.this,
762 lint);
763 psi.procStateList.add(ps);
764 return ps;
765 } else
766 throw new NoSuchElementException();
767 }
768
769 public boolean hasNext() {
770 if (onProcIterator)
771 return psi.processorIterator.hasNext();
772 else
773 return innerIter.hasNext() || psi.processorIterator.hasNext();
774 }
775
776 public void remove () {
777 throw new UnsupportedOperationException();
778 }
779
780 /**
781 * Run all remaining processors on the procStateList that
782 * have not already run this round with an empty set of
783 * annotations.
784 */
785 public void runContributingProcs(RoundEnvironment re) {
786 if (!onProcIterator) {
787 Set<TypeElement> emptyTypeElements = Collections.emptySet();
788 while(innerIter.hasNext()) {
789 ProcessorState ps = innerIter.next();
790 if (ps.contributed)
791 callProcessor(ps.processor, emptyTypeElements, re);
792 }
793 }
794 }
795 }
796
797 Iterator<? extends Processor> processorIterator;
798 ArrayList<ProcessorState> procStateList;
799
800 public ProcessorStateIterator iterator() {
801 return new ProcessorStateIterator(this);
802 }
803
804 DiscoveredProcessors(Iterator<? extends Processor> processorIterator) {
805 this.processorIterator = processorIterator;
806 this.procStateList = new ArrayList<>();
807 }
808
809 /**
810 * Free jar files, etc. if using a service loader.
811 */
812 public void close() {
813 if (processorIterator != null &&
814 processorIterator instanceof ServiceIterator serviceIterator) {
815 serviceIterator.close();
816 }
817 }
818 }
819
820 private void discoverAndRunProcs(Set<TypeElement> annotationsPresent,
821 List<ClassSymbol> topLevelClasses,
822 List<PackageSymbol> packageInfoFiles,
823 List<ModuleSymbol> moduleInfoFiles) {
824 Map<String, TypeElement> unmatchedAnnotations = new HashMap<>(annotationsPresent.size());
825
826 for(TypeElement a : annotationsPresent) {
827 ModuleElement mod = elementUtils.getModuleOf(a);
828 String moduleSpec = Feature.MODULES.allowedInSource(source) && mod != null ? mod.getQualifiedName() + "/" : "";
829 unmatchedAnnotations.put(moduleSpec + a.getQualifiedName().toString(),
830 a);
831 }
832
833 // Give "*" processors a chance to match
834 if (unmatchedAnnotations.size() == 0)
835 unmatchedAnnotations.put("", null);
836
837 DiscoveredProcessors.ProcessorStateIterator psi = discoveredProcs.iterator();
838 // TODO: Create proper argument values; need past round
839 // information to fill in this constructor. Note that the 1
840 // st round of processing could be the last round if there
841 // were parse errors on the initial source files; however, we
842 // are not doing processing in that case.
843
844 Set<Element> rootElements = new LinkedHashSet<>();
845 rootElements.addAll(topLevelClasses);
846 rootElements.addAll(packageInfoFiles);
847 rootElements.addAll(moduleInfoFiles);
848 rootElements = Collections.unmodifiableSet(rootElements);
849
850 RoundEnvironment renv = new JavacRoundEnvironment(false,
851 false,
852 rootElements,
853 JavacProcessingEnvironment.this);
854
855 while(unmatchedAnnotations.size() > 0 && psi.hasNext() ) {
856 ProcessorState ps = psi.next();
857 Set<String> matchedNames = new HashSet<>();
858 Set<TypeElement> typeElements = new LinkedHashSet<>();
859
860 for (Map.Entry<String, TypeElement> entry: unmatchedAnnotations.entrySet()) {
861 String unmatchedAnnotationName = entry.getKey();
862 if (ps.annotationSupported(unmatchedAnnotationName) ) {
863 matchedNames.add(unmatchedAnnotationName);
864 TypeElement te = entry.getValue();
865 if (te != null)
866 typeElements.add(te);
867 }
868 }
869
870 if (matchedNames.size() > 0 || ps.contributed) {
871 boolean processingResult = callProcessor(ps.processor, typeElements, renv);
872 ps.contributed = true;
873 ps.removeSupportedOptions(unmatchedProcessorOptions);
874
875 if (printProcessorInfo || verbose) {
876 log.printLines("x.print.processor.info",
877 ps.processor.getClass().getName(),
878 matchedNames.toString(),
879 processingResult);
880 }
881
882 if (processingResult) {
883 unmatchedAnnotations.keySet().removeAll(matchedNames);
884 }
885
886 }
887 }
888 unmatchedAnnotations.remove("");
889
890 if (lint.isEnabled(PROCESSING) && unmatchedAnnotations.size() > 0) {
891 // Remove annotations processed by javac
892 unmatchedAnnotations.keySet().removeAll(platformAnnotations);
893 if (unmatchedAnnotations.size() > 0) {
894 log.warning(LintWarnings.ProcAnnotationsWithoutProcessors(unmatchedAnnotations.keySet()));
895 }
896 }
897
898 // Run contributing processors that haven't run yet
899 psi.runContributingProcs(renv);
900 }
901
902 /**
903 * Computes the set of annotations on the symbol in question.
904 * Leave class public for external testing purposes.
905 */
906 public static class ComputeAnnotationSet extends
907 ElementScanner14<Set<TypeElement>, Set<TypeElement>> {
908 final Elements elements;
909
910 public ComputeAnnotationSet(Elements elements) {
911 super();
912 this.elements = elements;
913 }
914
915 @Override @DefinedBy(Api.LANGUAGE_MODEL)
916 public Set<TypeElement> visitPackage(PackageElement e, Set<TypeElement> p) {
917 // Don't scan enclosed elements of a package
918 return p;
919 }
920
921 @Override @DefinedBy(Api.LANGUAGE_MODEL)
922 public Set<TypeElement> visitType(TypeElement e, Set<TypeElement> p) {
923 // Type parameters are not considered to be enclosed by a type
924 scan(e.getTypeParameters(), p);
925 return super.visitType(e, p);
926 }
927
928 @Override @DefinedBy(Api.LANGUAGE_MODEL)
929 public Set<TypeElement> visitExecutable(ExecutableElement e, Set<TypeElement> p) {
930 // Type parameters are not considered to be enclosed by an executable
931 scan(e.getTypeParameters(), p);
932 return super.visitExecutable(e, p);
933 }
934
935 void addAnnotations(Element e, Set<TypeElement> p) {
936 for (AnnotationMirror annotationMirror :
937 elements.getAllAnnotationMirrors(e) ) {
938 Element e2 = annotationMirror.getAnnotationType().asElement();
939 p.add((TypeElement) e2);
940 }
941 }
942
943 @Override @DefinedBy(Api.LANGUAGE_MODEL)
944 public Set<TypeElement> scan(Element e, Set<TypeElement> p) {
945 addAnnotations(e, p);
946 return super.scan(e, p);
947 }
948 }
949
950 private boolean callProcessor(Processor proc,
951 Set<? extends TypeElement> tes,
952 RoundEnvironment renv) {
953 Handler prevDeferredHandler = dcfh.setHandler(dcfh.userCodeHandler);
954 try {
955 return proc.process(tes, renv);
956 } catch (ClassFinder.BadClassFile ex) {
957 log.error(Errors.ProcCantAccess1(ex.sym, ex.getDetailValue()));
958 return false;
959 } catch (CompletionFailure ex) {
960 StringWriter out = new StringWriter();
961 ex.printStackTrace(new PrintWriter(out));
962 log.error(Errors.ProcCantAccess(ex.sym, ex.getDetailValue(), out.toString()));
963 return false;
964 } catch (ClientCodeException e) {
965 throw e;
966 } catch (Throwable t) {
967 throw new AnnotationProcessingError(t);
968 } finally {
969 dcfh.setHandler(prevDeferredHandler);
970 }
971 }
972
973 /**
974 * Helper object for a single round of annotation processing.
975 */
976 class Round {
977 /** The round number. */
978 final int number;
979 /** The diagnostic handler for the round. */
980 final Log.DeferredDiagnosticHandler deferredDiagnosticHandler;
981
982 /** The ASTs to be compiled. */
983 List<JCCompilationUnit> roots;
984 /** The trees that need to be cleaned - includes roots and implicitly parsed trees. */
985 Set<JCCompilationUnit> treesToClean;
986 /** The classes to be compiler that have were generated. */
987 Map<ModuleSymbol, Map<String, JavaFileObject>> genClassFiles;
988
989 /** The set of annotations to be processed this round. */
990 Set<TypeElement> annotationsPresent;
991 /** The set of top level classes to be processed this round. */
992 List<ClassSymbol> topLevelClasses;
993 /** The set of package-info files to be processed this round. */
994 List<PackageSymbol> packageInfoFiles;
995 /** The set of module-info files to be processed this round. */
996 List<ModuleSymbol> moduleInfoFiles;
997
998 /** Create a round (common code). */
999 private Round(int number, Set<JCCompilationUnit> treesToClean,
1000 Log.DeferredDiagnosticHandler deferredDiagnosticHandler) {
1001 this.number = number;
1002
1003 if (number == 1) {
1004 Assert.checkNonNull(deferredDiagnosticHandler);
1005 this.deferredDiagnosticHandler = deferredDiagnosticHandler;
1006 } else {
1007 this.deferredDiagnosticHandler = new Log.DeferredDiagnosticHandler(log);
1008 compiler.setDeferredDiagnosticHandler(this.deferredDiagnosticHandler);
1009 }
1010
1011 // the following will be populated as needed
1012 topLevelClasses = List.nil();
1013 packageInfoFiles = List.nil();
1014 moduleInfoFiles = List.nil();
1015 this.treesToClean = treesToClean;
1016 }
1017
1018 /** Create the first round. */
1019 Round(List<JCCompilationUnit> roots,
1020 List<ClassSymbol> classSymbols,
1021 Set<JCCompilationUnit> treesToClean,
1022 Log.DeferredDiagnosticHandler deferredDiagnosticHandler) {
1023 this(1, treesToClean, deferredDiagnosticHandler);
1024 this.roots = roots;
1025 genClassFiles = new HashMap<>();
1026
1027 // The reverse() in the following line is to maintain behavioural
1028 // compatibility with the previous revision of the code. Strictly speaking,
1029 // it should not be necessary, but a javah golden file test fails without it.
1030 topLevelClasses =
1031 getTopLevelClasses(roots).prependList(classSymbols.reverse());
1032
1033 packageInfoFiles = getPackageInfoFiles(roots);
1034
1035 moduleInfoFiles = getModuleInfoFiles(roots);
1036
1037 findAnnotationsPresent();
1038 }
1039
1040 /** Create a new round. */
1041 private Round(Round prev,
1042 Set<JavaFileObject> newSourceFiles, Map<ModuleSymbol, Map<String,JavaFileObject>> newClassFiles) {
1043 this(prev.number+1, prev.treesToClean, null);
1044 prev.newRound();
1045 this.genClassFiles = prev.genClassFiles;
1046
1047 //parse the generated files even despite errors reported so far, to eliminate
1048 //recoverable errors related to the type declared in the generated files:
1049 List<JCCompilationUnit> parsedFiles = compiler.parseFiles(newSourceFiles, true);
1050 roots = prev.roots.appendList(parsedFiles);
1051
1052 // Check for errors after parsing
1053 if (unrecoverableError()) {
1054 compiler.initModules(List.nil());
1055 return;
1056 }
1057
1058 roots = compiler.initModules(roots);
1059
1060 enterClassFiles(genClassFiles);
1061 List<ClassSymbol> newClasses = enterClassFiles(newClassFiles);
1062 for (Entry<ModuleSymbol, Map<String, JavaFileObject>> moduleAndClassFiles : newClassFiles.entrySet()) {
1063 genClassFiles.computeIfAbsent(moduleAndClassFiles.getKey(), m -> new LinkedHashMap<>()).putAll(moduleAndClassFiles.getValue());
1064 }
1065 enterTrees(roots);
1066
1067 if (unrecoverableError())
1068 return;
1069
1070 topLevelClasses = join(
1071 getTopLevelClasses(parsedFiles),
1072 getTopLevelClassesFromClasses(newClasses));
1073
1074 packageInfoFiles = join(
1075 getPackageInfoFiles(parsedFiles),
1076 getPackageInfoFilesFromClasses(newClasses));
1077
1078 moduleInfoFiles = List.nil(); //module-info cannot be generated
1079
1080 findAnnotationsPresent();
1081 }
1082
1083 /** Create the next round to be used. */
1084 Round next(Set<JavaFileObject> newSourceFiles, Map<ModuleSymbol, Map<String, JavaFileObject>> newClassFiles) {
1085 return new Round(this, newSourceFiles, newClassFiles);
1086 }
1087
1088 /** Prepare the compiler for the final compilation. */
1089 void finalCompiler() {
1090 newRound();
1091 }
1092
1093 /** Return the number of errors found so far in this round.
1094 * This may include unrecoverable errors, such as parse errors,
1095 * and transient errors, such as missing symbols. */
1096 int errorCount() {
1097 return compiler.errorCount();
1098 }
1099
1100 /** Return the number of warnings found so far in this round. */
1101 int warningCount() {
1102 return compiler.warningCount();
1103 }
1104
1105 /** Return whether or not an unrecoverable error has occurred. */
1106 boolean unrecoverableError() {
1107 if (messager.errorRaised())
1108 return true;
1109
1110 for (JCDiagnostic d: deferredDiagnosticHandler.getDiagnostics()) {
1111 switch (d.getKind()) {
1112 case WARNING:
1113 if (werror)
1114 return true;
1115 break;
1116
1117 case ERROR:
1118 if (fatalErrors || !d.isFlagSet(RECOVERABLE))
1119 return true;
1120 break;
1121 }
1122 }
1123
1124 return false;
1125 }
1126
1127 /** Find the set of annotations present in the set of top level
1128 * classes and package info files to be processed this round. */
1129 void findAnnotationsPresent() {
1130 ComputeAnnotationSet annotationComputer = new ComputeAnnotationSet(elementUtils);
1131 // Use annotation processing to compute the set of annotations present
1132 annotationsPresent = new LinkedHashSet<>();
1133 for (ClassSymbol classSym : topLevelClasses)
1134 annotationComputer.scan(classSym, annotationsPresent);
1135 for (PackageSymbol pkgSym : packageInfoFiles)
1136 annotationComputer.scan(pkgSym, annotationsPresent);
1137 for (ModuleSymbol mdlSym : moduleInfoFiles)
1138 annotationComputer.scan(mdlSym, annotationsPresent);
1139 }
1140
1141 /** Enter a set of generated class files. */
1142 private List<ClassSymbol> enterClassFiles(Map<ModuleSymbol, Map<String, JavaFileObject>> modulesAndClassFiles) {
1143 List<ClassSymbol> list = List.nil();
1144
1145 for (Entry<ModuleSymbol, Map<String, JavaFileObject>> moduleAndClassFiles : modulesAndClassFiles.entrySet()) {
1146 for (Map.Entry<String,JavaFileObject> entry : moduleAndClassFiles.getValue().entrySet()) {
1147 Name name = names.fromString(entry.getKey());
1148 JavaFileObject file = entry.getValue();
1149 if (file.getKind() != JavaFileObject.Kind.CLASS)
1150 throw new AssertionError(file);
1151 ClassSymbol cs;
1152 if (isPkgInfo(file, JavaFileObject.Kind.CLASS)) {
1153 Name packageName = Convert.packagePart(name);
1154 PackageSymbol p = symtab.enterPackage(moduleAndClassFiles.getKey(), packageName);
1155 if (p.package_info == null)
1156 p.package_info = symtab.enterClass(moduleAndClassFiles.getKey(), Convert.shortName(name), p);
1157 cs = p.package_info;
1158 cs.reset();
1159 if (cs.classfile == null)
1160 cs.classfile = file;
1161 cs.completer = initialCompleter;
1162 } else {
1163 cs = symtab.enterClass(moduleAndClassFiles.getKey(), name);
1164 cs.reset();
1165 cs.classfile = file;
1166 cs.completer = initialCompleter;
1167 if (cs.owner.kind == PCK) {
1168 cs.owner.members().enter(cs); //XXX - OverwriteBetweenCompilations; syms.getClass is not sufficient anymore
1169 }
1170 }
1171 list = list.prepend(cs);
1172 }
1173 }
1174 return list.reverse();
1175 }
1176
1177 /** Enter a set of syntax trees. */
1178 private void enterTrees(List<JCCompilationUnit> roots) {
1179 compiler.enterTrees(roots);
1180 }
1181
1182 /** Run a processing round. */
1183 void run(boolean lastRound, boolean errorStatus) {
1184 printRoundInfo(lastRound);
1185
1186 if (!taskListener.isEmpty())
1187 taskListener.started(new TaskEvent(TaskEvent.Kind.ANNOTATION_PROCESSING_ROUND));
1188
1189 try {
1190 if (lastRound) {
1191 filer.setLastRound(true);
1192 Set<Element> emptyRootElements = Collections.emptySet(); // immutable
1193 RoundEnvironment renv = new JavacRoundEnvironment(true,
1194 errorStatus,
1195 emptyRootElements,
1196 JavacProcessingEnvironment.this);
1197 discoveredProcs.iterator().runContributingProcs(renv);
1198 } else {
1199 discoverAndRunProcs(annotationsPresent, topLevelClasses, packageInfoFiles, moduleInfoFiles);
1200 }
1201 } catch (Throwable t) {
1202 // we're specifically expecting Abort here, but if any Throwable
1203 // comes by, we should flush all deferred diagnostics, rather than
1204 // drop them on the ground.
1205 compiler.reportDeferredDiagnosticAndClearHandler();
1206 throw t;
1207 } finally {
1208 if (!taskListener.isEmpty())
1209 taskListener.finished(new TaskEvent(TaskEvent.Kind.ANNOTATION_PROCESSING_ROUND));
1210 }
1211 }
1212
1213 void showDiagnostics(boolean showAll) {
1214 deferredDiagnosticHandler.reportDeferredDiagnostics(showAll ? ACCEPT_ALL
1215 : ACCEPT_NON_RECOVERABLE);
1216 log.popDiagnosticHandler(deferredDiagnosticHandler);
1217 compiler.setDeferredDiagnosticHandler(null);
1218 }
1219 //where:
1220 private final Predicate<JCDiagnostic> ACCEPT_NON_RECOVERABLE =
1221 d -> d.getKind() != JCDiagnostic.Kind.ERROR ||
1222 !d.isFlagSet(DiagnosticFlag.RECOVERABLE) ||
1223 d.isFlagSet(DiagnosticFlag.API);
1224 private final Predicate<JCDiagnostic> ACCEPT_ALL = d -> true;
1225
1226 /** Print info about this round. */
1227 private void printRoundInfo(boolean lastRound) {
1228 if (printRounds || verbose) {
1229 List<ClassSymbol> tlc = lastRound ? List.nil() : topLevelClasses;
1230 Set<TypeElement> ap = lastRound ? Collections.emptySet() : annotationsPresent;
1231 log.printLines("x.print.rounds",
1232 number,
1233 "{" + tlc.toString(", ") + "}",
1234 ap,
1235 lastRound);
1236 }
1237 }
1238
1239 /** Prepare for new round of annotation processing. Cleans trees, resets symbols, and
1240 * asks selected services to prepare to a new round of annotation processing.
1241 */
1242 private void newRound() {
1243 //ensure treesToClean contains all trees, including implicitly parsed ones
1244 for (Env<AttrContext> env : enter.getEnvs()) {
1245 treesToClean.add(env.toplevel);
1246 }
1247 for (JCCompilationUnit node : treesToClean) {
1248 treeCleaner.scan(node);
1249 }
1250 chk.newRound();
1251 enter.newRound();
1252 filer.newRound();
1253 messager.newRound();
1254 compiler.newRound();
1255 modules.newRound();
1256 types.newRound();
1257 annotate.newRound();
1258 elementUtils.newRound();
1259
1260 boolean foundError = false;
1261
1262 for (ClassSymbol cs : symtab.getAllClasses()) {
1263 if (cs.kind == ERR) {
1264 foundError = true;
1265 break;
1266 }
1267 }
1268
1269 if (foundError) {
1270 for (ClassSymbol cs : symtab.getAllClasses()) {
1271 if (cs.classfile != null || cs.kind == ERR) {
1272 Kinds.Kind symKind = cs.kind;
1273 cs.reset();
1274 if (symKind == ERR) {
1275 cs.type = new ClassType(cs.type.getEnclosingType(), null, cs, List.nil());
1276 }
1277 if (cs.isCompleted()) {
1278 cs.completer = initialCompleter;
1279 }
1280 }
1281 }
1282 }
1283 }
1284 }
1285
1286
1287 // TODO: internal catch clauses?; catch and rethrow an annotation
1288 // processing error
1289 public boolean doProcessing(List<JCCompilationUnit> roots,
1290 List<ClassSymbol> classSymbols,
1291 Iterable<? extends PackageSymbol> pckSymbols,
1292 Log.DeferredDiagnosticHandler deferredDiagnosticHandler) {
1293 final Set<JCCompilationUnit> treesToClean =
1294 Collections.newSetFromMap(new IdentityHashMap<JCCompilationUnit, Boolean>());
1295
1296 //fill already attributed implicit trees:
1297 for (Env<AttrContext> env : enter.getEnvs()) {
1298 treesToClean.add(env.toplevel);
1299 }
1300
1301 Set<PackageSymbol> specifiedPackages = new LinkedHashSet<>();
1302 for (PackageSymbol psym : pckSymbols)
1303 specifiedPackages.add(psym);
1304 this.specifiedPackages = Collections.unmodifiableSet(specifiedPackages);
1305
1306 Round round = new Round(roots, classSymbols, treesToClean, deferredDiagnosticHandler);
1307
1308 boolean errorStatus;
1309 boolean moreToDo;
1310 do {
1311 // Run processors for round n
1312 round.run(false, false);
1313
1314 // Processors for round n have run to completion.
1315 // Check for errors and whether there is more work to do.
1316 errorStatus = round.unrecoverableError();
1317 moreToDo = moreToDo();
1318
1319 round.showDiagnostics(showResolveErrors);
1320
1321 // Set up next round.
1322 // Copy mutable collections returned from filer.
1323 round = round.next(
1324 new LinkedHashSet<>(filer.getGeneratedSourceFileObjects()),
1325 new LinkedHashMap<>(filer.getGeneratedClasses()));
1326
1327 // Check for errors during setup.
1328 if (round.unrecoverableError())
1329 errorStatus = true;
1330
1331 } while (moreToDo && !errorStatus);
1332
1333 // run last round
1334 round.run(true, errorStatus);
1335 round.showDiagnostics(true);
1336
1337 filer.warnIfUnclosedFiles();
1338 warnIfUnmatchedOptions();
1339
1340 /*
1341 * If an annotation processor raises an error in a round,
1342 * that round runs to completion and one last round occurs.
1343 * The last round may also occur because no more source or
1344 * class files have been generated. Therefore, if an error
1345 * was raised on either of the last *two* rounds, the compile
1346 * should exit with a nonzero exit code. The current value of
1347 * errorStatus holds whether or not an error was raised on the
1348 * second to last round; errorRaised() gives the error status
1349 * of the last round.
1350 */
1351 if (messager.errorRaised()
1352 || werror && round.warningCount() > 0 && round.errorCount() > 0)
1353 errorStatus = true;
1354
1355 Set<JavaFileObject> newSourceFiles =
1356 new LinkedHashSet<>(filer.getGeneratedSourceFileObjects());
1357 roots = round.roots;
1358
1359 errorStatus = errorStatus || (compiler.errorCount() > 0);
1360
1361
1362 if (newSourceFiles.size() > 0)
1363 roots = roots.appendList(compiler.parseFiles(newSourceFiles));
1364
1365 errorStatus = errorStatus || (compiler.errorCount() > 0);
1366
1367 if (errorStatus && compiler.errorCount() == 0) {
1368 compiler.log.nerrors++;
1369 }
1370
1371 if (compiler.continueAfterProcessAnnotations()) {
1372 round.finalCompiler();
1373 compiler.enterTrees(compiler.initModules(roots));
1374 } else {
1375 compiler.todo.clear();
1376 }
1377
1378 // Free resources
1379 this.close();
1380
1381 if (!taskListener.isEmpty())
1382 taskListener.finished(new TaskEvent(TaskEvent.Kind.ANNOTATION_PROCESSING));
1383
1384 return true;
1385 }
1386
1387 private void warnIfUnmatchedOptions() {
1388 if (!unmatchedProcessorOptions.isEmpty()) {
1389 log.warning(Warnings.ProcUnmatchedProcessorOptions(unmatchedProcessorOptions.toString()));
1390 }
1391 }
1392
1393 /**
1394 * Free resources related to annotation processing.
1395 */
1396 public void close() {
1397 filer.close();
1398 if (discoveredProcs != null) // Make calling close idempotent
1399 discoveredProcs.close();
1400 discoveredProcs = null;
1401 }
1402
1403 private List<ClassSymbol> getTopLevelClasses(List<? extends JCCompilationUnit> units) {
1404 List<ClassSymbol> classes = List.nil();
1405 for (JCCompilationUnit unit : units) {
1406 for (JCTree node : unit.defs) {
1407 if (node.hasTag(JCTree.Tag.CLASSDEF)) {
1408 ClassSymbol sym = ((JCClassDecl) node).sym;
1409 Assert.checkNonNull(sym);
1410 classes = classes.prepend(sym);
1411 }
1412 }
1413 }
1414 return classes.reverse();
1415 }
1416
1417 private List<ClassSymbol> getTopLevelClassesFromClasses(List<? extends ClassSymbol> syms) {
1418 List<ClassSymbol> classes = List.nil();
1419 for (ClassSymbol sym : syms) {
1420 if (!isPkgInfo(sym)) {
1421 classes = classes.prepend(sym);
1422 }
1423 }
1424 return classes.reverse();
1425 }
1426
1427 private List<PackageSymbol> getPackageInfoFiles(List<? extends JCCompilationUnit> units) {
1428 List<PackageSymbol> packages = List.nil();
1429 for (JCCompilationUnit unit : units) {
1430 if (isPkgInfo(unit.sourcefile, JavaFileObject.Kind.SOURCE)) {
1431 packages = packages.prepend(unit.packge);
1432 }
1433 }
1434 return packages.reverse();
1435 }
1436
1437 private List<PackageSymbol> getPackageInfoFilesFromClasses(List<? extends ClassSymbol> syms) {
1438 List<PackageSymbol> packages = List.nil();
1439 for (ClassSymbol sym : syms) {
1440 if (isPkgInfo(sym)) {
1441 packages = packages.prepend((PackageSymbol) sym.owner);
1442 }
1443 }
1444 return packages.reverse();
1445 }
1446
1447 private List<ModuleSymbol> getModuleInfoFiles(List<? extends JCCompilationUnit> units) {
1448 List<ModuleSymbol> modules = List.nil();
1449 for (JCCompilationUnit unit : units) {
1450 if (isModuleInfo(unit.sourcefile, JavaFileObject.Kind.SOURCE) && unit.defs.nonEmpty()) {
1451 for (JCTree tree : unit.defs) {
1452 if (tree.hasTag(Tag.IMPORT)) {
1453 continue;
1454 }
1455 else if (tree.hasTag(Tag.MODULEDEF)) {
1456 modules = modules.prepend(unit.modle);
1457 break;
1458 }
1459 else {
1460 break;
1461 }
1462 }
1463 }
1464 }
1465 return modules.reverse();
1466 }
1467
1468 // avoid unchecked warning from use of varargs
1469 private static <T> List<T> join(List<T> list1, List<T> list2) {
1470 return list1.appendList(list2);
1471 }
1472
1473 private boolean isPkgInfo(JavaFileObject fo, JavaFileObject.Kind kind) {
1474 return fo.isNameCompatible("package-info", kind);
1475 }
1476
1477 private boolean isPkgInfo(ClassSymbol sym) {
1478 return isPkgInfo(sym.classfile, JavaFileObject.Kind.CLASS) && (sym.packge().package_info == sym);
1479 }
1480
1481 private boolean isModuleInfo(JavaFileObject fo, JavaFileObject.Kind kind) {
1482 return fo.isNameCompatible("module-info", kind);
1483 }
1484
1485 class ImplicitCompleter implements Completer {
1486
1487 private final JCCompilationUnit topLevel;
1488
1489 public ImplicitCompleter(JCCompilationUnit topLevel) {
1490 this.topLevel = topLevel;
1491 }
1492
1493 @Override public void complete(Symbol sym) throws CompletionFailure {
1494 compiler.readSourceFile(topLevel, (ClassSymbol) sym);
1495 }
1496 }
1497
1498 private final TreeScanner treeCleaner = new TreeScanner() {
1499 public void scan(JCTree node) {
1500 super.scan(node);
1501 if (node != null)
1502 node.type = null;
1503 }
1504 JCCompilationUnit topLevel;
1505 public void visitTopLevel(JCCompilationUnit node) {
1506 if (node.packge != null) {
1507 if (isPkgInfo(node.sourcefile, Kind.SOURCE)) {
1508 node.packge.package_info.reset();
1509 }
1510 node.packge.reset();
1511 }
1512 if (isModuleInfo(node.sourcefile, Kind.SOURCE)) {
1513 node.modle.reset();
1514 node.modle.completer = sym -> modules.enter(List.of(node), node.modle.module_info);
1515 node.modle.module_info.reset();
1516 node.modle.module_info.members_field = WriteableScope.create(node.modle.module_info);
1517 }
1518 node.packge = null;
1519 topLevel = node;
1520 try {
1521 super.visitTopLevel(node);
1522 } finally {
1523 topLevel = null;
1524 }
1525 }
1526 public void visitClassDef(JCClassDecl node) {
1527 super.visitClassDef(node);
1528 // remove generated constructor that may have been added during attribution:
1529 List<JCTree> beforeConstructor = List.nil();
1530 List<JCTree> defs = node.defs;
1531 while (defs.nonEmpty() && !defs.head.hasTag(Tag.METHODDEF)) {
1532 beforeConstructor = beforeConstructor.prepend(defs.head);
1533 defs = defs.tail;
1534 }
1535 if (defs.nonEmpty() &&
1536 (((JCMethodDecl) defs.head).mods.flags & Flags.GENERATEDCONSTR) != 0) {
1537 defs = defs.tail;
1538 while (beforeConstructor.nonEmpty()) {
1539 defs = defs.prepend(beforeConstructor.head);
1540 beforeConstructor = beforeConstructor.tail;
1541 }
1542 node.defs = defs;
1543 }
1544 if (node.sym != null) {
1545 node.sym.completer = new ImplicitCompleter(topLevel);
1546 List<? extends RecordComponent> recordComponents = node.sym.getRecordComponents();
1547 for (RecordComponent rc : recordComponents) {
1548 List<JCAnnotation> originalAnnos = rc.getOriginalAnnos();
1549 originalAnnos.forEach(a -> visitAnnotation(a));
1550 }
1551 // we should empty the list of permitted subclasses for next round
1552 node.sym.clearPermittedSubclasses();
1553 }
1554 node.sym = null;
1555 }
1556 public void visitMethodDef(JCMethodDecl node) {
1557 // remove super constructor call that may have been added during attribution:
1558 if (TreeInfo.isConstructor(node) && node.sym != null && node.sym.owner.isEnum() &&
1559 node.body != null && node.body.stats.nonEmpty() && TreeInfo.isSuperCall(node.body.stats.head) &&
1560 node.body.stats.head.pos == node.body.pos) {
1561 node.body.stats = node.body.stats.tail;
1562 }
1563 node.sym = null;
1564 super.visitMethodDef(node);
1565 }
1566 public void visitVarDef(JCVariableDecl node) {
1567 node.sym = null;
1568 super.visitVarDef(node);
1569 }
1570 public void visitNewClass(JCNewClass node) {
1571 node.constructor = null;
1572 super.visitNewClass(node);
1573 }
1574 public void visitAssignop(JCAssignOp node) {
1575 node.operator = null;
1576 super.visitAssignop(node);
1577 }
1578 public void visitUnary(JCUnary node) {
1579 node.operator = null;
1580 super.visitUnary(node);
1581 }
1582 public void visitBinary(JCBinary node) {
1583 node.operator = null;
1584 super.visitBinary(node);
1585 }
1586 public void visitSelect(JCFieldAccess node) {
1587 node.sym = null;
1588 super.visitSelect(node);
1589 }
1590 public void visitIdent(JCIdent node) {
1591 node.sym = null;
1592 super.visitIdent(node);
1593 }
1594 public void visitAnnotation(JCAnnotation node) {
1595 node.attribute = null;
1596 super.visitAnnotation(node);
1597 }
1598 };
1599
1600
1601 private boolean moreToDo() {
1602 return filer.newFiles();
1603 }
1604
1605 /**
1606 * {@inheritDoc}
1607 *
1608 * Command line options suitable for presenting to annotation
1609 * processors.
1610 * {@literal "-Afoo=bar"} should be {@literal "-Afoo" => "bar"}.
1611 */
1612 @DefinedBy(Api.ANNOTATION_PROCESSING)
1613 public Map<String,String> getOptions() {
1614 return processorOptions;
1615 }
1616
1617 @DefinedBy(Api.ANNOTATION_PROCESSING)
1618 public Messager getMessager() {
1619 return messager;
1620 }
1621
1622 @DefinedBy(Api.ANNOTATION_PROCESSING)
1623 public JavacFiler getFiler() {
1624 return filer;
1625 }
1626
1627 @DefinedBy(Api.ANNOTATION_PROCESSING)
1628 public JavacElements getElementUtils() {
1629 return elementUtils;
1630 }
1631
1632 @DefinedBy(Api.ANNOTATION_PROCESSING)
1633 public JavacTypes getTypeUtils() {
1634 return typeUtils;
1635 }
1636
1637 @DefinedBy(Api.ANNOTATION_PROCESSING)
1638 public SourceVersion getSourceVersion() {
1639 return Source.toSourceVersion(source);
1640 }
1641
1642 @DefinedBy(Api.ANNOTATION_PROCESSING)
1643 public Locale getLocale() {
1644 return messages.getCurrentLocale();
1645 }
1646
1647 @DefinedBy(Api.ANNOTATION_PROCESSING)
1648 public boolean isPreviewEnabled() {
1649 return preview.isEnabled();
1650 }
1651
1652 public Set<Symbol.PackageSymbol> getSpecifiedPackages() {
1653 return specifiedPackages;
1654 }
1655
1656 public static final Pattern noMatches = Pattern.compile("(\\P{all})+");
1657
1658 /**
1659 * Convert import-style string for supported annotations into a
1660 * regex matching that string. If the string is not a valid
1661 * import-style string, return a regex that won't match anything.
1662 */
1663 private static Pattern importStringToPattern(boolean allowModules, String s, Processor p, Log log, Lint lint) {
1664 String module;
1665 String pkg;
1666 int slash = s.indexOf('/');
1667 if (slash == (-1)) {
1668 if (s.equals("*")) {
1669 return MatchingUtils.validImportStringToPattern(s);
1670 }
1671 module = allowModules ? ".*/" : "";
1672 pkg = s;
1673 } else {
1674 String moduleName = s.substring(0, slash);
1675 if (!SourceVersion.isName(moduleName)) {
1676 return warnAndNoMatches(s, p, log, lint);
1677 }
1678 module = Pattern.quote(moduleName + "/");
1679 // And warn if module is specified if modules aren't supported, conditional on -Xlint:proc?
1680 pkg = s.substring(slash + 1);
1681 }
1682 if (MatchingUtils.isValidImportString(pkg)) {
1683 return Pattern.compile(module + MatchingUtils.validImportStringToPatternString(pkg));
1684 } else {
1685 return warnAndNoMatches(s, p, log, lint);
1686 }
1687 }
1688
1689 private static Pattern warnAndNoMatches(String s, Processor p, Log log, Lint lint) {
1690 lint.logIfEnabled(LintWarnings.ProcMalformedSupportedString(s, p.getClass().getName()));
1691 return noMatches; // won't match any valid identifier
1692 }
1693
1694 /**
1695 * For internal use only. This method may be removed without warning.
1696 */
1697 public Context getContext() {
1698 return context;
1699 }
1700
1701 /**
1702 * For internal use only. This method may be removed without warning.
1703 */
1704 public ClassLoader getProcessorClassLoader() {
1705 return processorClassLoader;
1706 }
1707
1708 public String toString() {
1709 return "javac ProcessingEnvironment";
1710 }
1711
1712 public static boolean isValidOptionName(String optionName) {
1713 for(String s : optionName.split("\\.", -1)) {
1714 if (!SourceVersion.isIdentifier(s))
1715 return false;
1716 }
1717 return true;
1718 }
1719 }