1 /*
2 * Copyright (c) 1999, 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.main;
27
28 import java.io.*;
29 import java.lang.module.Configuration;
30 import java.lang.reflect.Method;
31 import java.nio.file.FileSystemNotFoundException;
32 import java.nio.file.InvalidPathException;
33 import java.nio.file.ReadOnlyFileSystemException;
34 import java.util.Collection;
35 import java.util.Comparator;
36 import java.util.EnumSet;
37 import java.util.HashMap;
38 import java.util.HashSet;
39 import java.util.LinkedHashMap;
40 import java.util.LinkedHashSet;
41 import java.util.Map;
42 import java.util.MissingResourceException;
43 import java.util.Optional;
44 import java.util.Queue;
45 import java.util.ResourceBundle;
46 import java.util.ServiceLoader;
47 import java.util.Set;
48 import java.util.function.Function;
49 import java.util.function.ToIntFunction;
50
51 import javax.annotation.processing.Processor;
52 import javax.lang.model.SourceVersion;
53 import javax.lang.model.element.ElementVisitor;
54 import javax.tools.DiagnosticListener;
55 import javax.tools.JavaFileManager;
56 import javax.tools.JavaFileObject;
57 import javax.tools.JavaFileObject.Kind;
58 import javax.tools.StandardLocation;
59
60 import com.sun.source.util.TaskEvent;
61 import com.sun.tools.javac.api.MultiTaskListener;
62 import com.sun.tools.javac.code.*;
63 import com.sun.tools.javac.code.Lint.LintCategory;
64 import com.sun.tools.javac.code.Source.Feature;
65 import com.sun.tools.javac.code.Symbol.ClassSymbol;
66 import com.sun.tools.javac.code.Symbol.CompletionFailure;
67 import com.sun.tools.javac.code.Symbol.ModuleSymbol;
68 import com.sun.tools.javac.code.Symbol.PackageSymbol;
69 import com.sun.tools.javac.comp.*;
70 import com.sun.tools.javac.comp.CompileStates.CompileState;
71 import com.sun.tools.javac.file.JavacFileManager;
72 import com.sun.tools.javac.jvm.*;
73 import com.sun.tools.javac.parser.*;
74 import com.sun.tools.javac.platform.PlatformDescription;
75 import com.sun.tools.javac.processing.*;
76 import com.sun.tools.javac.tree.*;
77 import com.sun.tools.javac.tree.JCTree.JCClassDecl;
78 import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
79 import com.sun.tools.javac.tree.JCTree.JCExpression;
80 import com.sun.tools.javac.tree.JCTree.JCLambda;
81 import com.sun.tools.javac.tree.JCTree.JCMemberReference;
82 import com.sun.tools.javac.tree.JCTree.JCMethodDecl;
83 import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
84 import com.sun.tools.javac.util.*;
85 import com.sun.tools.javac.util.Context.Key;
86 import com.sun.tools.javac.util.DefinedBy.Api;
87 import com.sun.tools.javac.util.JCDiagnostic.Factory;
88 import com.sun.tools.javac.util.Log.DiagnosticHandler;
89 import com.sun.tools.javac.util.Log.DiscardDiagnosticHandler;
90 import com.sun.tools.javac.util.Log.WriterKind;
91
92 import static com.sun.tools.javac.code.Kinds.Kind.*;
93
94 import com.sun.tools.javac.code.Symbol.ModuleSymbol;
95
96 import com.sun.tools.javac.resources.CompilerProperties.Errors;
97 import com.sun.tools.javac.resources.CompilerProperties.Fragments;
98 import com.sun.tools.javac.resources.CompilerProperties.Notes;
99 import com.sun.tools.javac.resources.CompilerProperties.Warnings;
100
101 import static com.sun.tools.javac.code.TypeTag.CLASS;
102 import static com.sun.tools.javac.main.Option.*;
103 import com.sun.tools.javac.tree.JCTree.JCBindingPattern;
104 import com.sun.tools.javac.tree.JCTree.JCInstanceOf;
105 import static com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag.*;
106
107 import static javax.tools.StandardLocation.CLASS_OUTPUT;
108 import static javax.tools.StandardLocation.ANNOTATION_PROCESSOR_PATH;
109
110 import com.sun.tools.javac.tree.JCTree.JCModuleDecl;
111 import com.sun.tools.javac.tree.JCTree.JCRecordPattern;
112 import com.sun.tools.javac.tree.JCTree.JCSwitch;
113 import com.sun.tools.javac.tree.JCTree.JCSwitchExpression;
114
115 /** This class could be the main entry point for GJC when GJC is used as a
116 * component in a larger software system. It provides operations to
117 * construct a new compiler, and to run a new compiler on a set of source
118 * files.
119 *
120 * <p><b>This is NOT part of any supported API.
121 * If you write code that depends on this, you do so at your own risk.
122 * This code and its internal interfaces are subject to change or
123 * deletion without notice.</b>
124 */
125 public class JavaCompiler {
126 /** The context key for the compiler. */
127 public static final Context.Key<JavaCompiler> compilerKey = new Context.Key<>();
128
129 /** Get the JavaCompiler instance for this context. */
130 public static JavaCompiler instance(Context context) {
131 JavaCompiler instance = context.get(compilerKey);
132 if (instance == null)
133 instance = new JavaCompiler(context);
134 return instance;
135 }
136
137 /** The current version number as a string.
138 */
139 public static String version() {
140 return version("release"); // mm.nn.oo[-milestone]
141 }
142
143 /** The current full version number as a string.
144 */
145 public static String fullVersion() {
146 return version("full"); // mm.mm.oo[-milestone]-build
147 }
148
149 private static final String versionRBName = "com.sun.tools.javac.resources.version";
150 private static ResourceBundle versionRB;
151
152 private static String version(String key) {
153 if (versionRB == null) {
154 try {
155 versionRB = ResourceBundle.getBundle(versionRBName);
156 } catch (MissingResourceException e) {
157 return Log.getLocalizedString("version.not.available");
158 }
159 }
160 try {
161 return versionRB.getString(key);
162 }
163 catch (MissingResourceException e) {
164 return Log.getLocalizedString("version.not.available");
165 }
166 }
167
168 /**
169 * Control how the compiler's latter phases (attr, flow, desugar, generate)
170 * are connected. Each individual file is processed by each phase in turn,
171 * but with different compile policies, you can control the order in which
172 * each class is processed through its next phase.
173 *
174 * <p>Generally speaking, the compiler will "fail fast" in the face of
175 * errors, although not aggressively so. flow, desugar, etc become no-ops
176 * once any errors have occurred. No attempt is currently made to determine
177 * if it might be safe to process a class through its next phase because
178 * it does not depend on any unrelated errors that might have occurred.
179 */
180 protected static enum CompilePolicy {
181 /**
182 * Attribute everything, then do flow analysis for everything,
183 * then desugar everything, and only then generate output.
184 * This means no output will be generated if there are any
185 * errors in any classes.
186 */
187 SIMPLE,
188
189 /**
190 * Groups the classes for each source file together, then process
191 * each group in a manner equivalent to the {@code SIMPLE} policy.
192 * This means no output will be generated if there are any
193 * errors in any of the classes in a source file.
194 */
195 BY_FILE,
196
197 /**
198 * Completely process each entry on the todo list in turn.
199 * -- this is the same for 1.5.
200 * Means output might be generated for some classes in a compilation unit
201 * and not others.
202 */
203 BY_TODO;
204
205 static CompilePolicy decode(String option) {
206 if (option == null)
207 return DEFAULT_COMPILE_POLICY;
208 else if (option.equals("simple"))
209 return SIMPLE;
210 else if (option.equals("byfile"))
211 return BY_FILE;
212 else if (option.equals("bytodo"))
213 return BY_TODO;
214 else
215 return DEFAULT_COMPILE_POLICY;
216 }
217 }
218
219 private static final CompilePolicy DEFAULT_COMPILE_POLICY = CompilePolicy.BY_TODO;
220
221 protected static enum ImplicitSourcePolicy {
222 /** Don't generate or process implicitly read source files. */
223 NONE,
224 /** Generate classes for implicitly read source files. */
225 CLASS,
226 /** Like CLASS, but generate warnings if annotation processing occurs */
227 UNSET;
228
229 static ImplicitSourcePolicy decode(String option) {
230 if (option == null)
231 return UNSET;
232 else if (option.equals("none"))
233 return NONE;
234 else if (option.equals("class"))
235 return CLASS;
236 else
237 return UNSET;
238 }
239 }
240
241 /** The log to be used for error reporting.
242 */
243 public Log log;
244
245 /** Factory for creating diagnostic objects
246 */
247 JCDiagnostic.Factory diagFactory;
248
249 /** The tree factory module.
250 */
251 protected TreeMaker make;
252
253 /** The class finder.
254 */
255 protected ClassFinder finder;
256
257 /** The class reader.
258 */
259 protected ClassReader reader;
260
261 /** The class writer.
262 */
263 protected ClassWriter writer;
264
265 /** The native header writer.
266 */
267 protected JNIWriter jniWriter;
268
269 /** The Lint mapper.
270 */
271 protected LintMapper lintMapper;
272
273 /** The module for the symbol table entry phases.
274 */
275 protected Enter enter;
276
277 /** The symbol table.
278 */
279 protected Symtab syms;
280
281 /** The language version.
282 */
283 protected Source source;
284
285 /** The module for code generation.
286 */
287 protected Gen gen;
288
289 /** The name table.
290 */
291 protected Names names;
292
293 /** The attributor.
294 */
295 protected Attr attr;
296
297 /** The analyzer
298 */
299 protected Analyzer analyzer;
300
301 /** The attributor.
302 */
303 protected Check chk;
304
305 /** The flow analyzer.
306 */
307 protected Flow flow;
308
309 /** The warning analyzer.
310 */
311 protected WarningAnalyzer warningAnalyzer;
312
313 /** The modules visitor
314 */
315 protected Modules modules;
316
317 /** The module finder
318 */
319 protected ModuleFinder moduleFinder;
320
321 /** The diagnostics factory
322 */
323 protected JCDiagnostic.Factory diags;
324
325 protected DeferredCompletionFailureHandler dcfh;
326
327 /** The type eraser.
328 */
329 protected TransTypes transTypes;
330
331 /** The syntactic sugar desweetener.
332 */
333 protected Lower lower;
334
335 /** The annotation annotator.
336 */
337 protected Annotate annotate;
338
339 /** Force a completion failure on this name
340 */
341 protected final Name completionFailureName;
342
343 /** Type utilities.
344 */
345 protected Types types;
346
347 /** Access to file objects.
348 */
349 protected JavaFileManager fileManager;
350
351 /** Factory for parsers.
352 */
353 protected ParserFactory parserFactory;
354
355 /** Broadcasting listener for progress events
356 */
357 protected MultiTaskListener taskListener;
358
359 /**
360 * SourceCompleter that delegates to the readSourceFile method of this class.
361 */
362 protected final Symbol.Completer sourceCompleter =
363 sym -> readSourceFile((ClassSymbol) sym);
364
365 /**
366 * Command line options.
367 */
368 protected Options options;
369
370 protected Context context;
371
372 /**
373 * Flag set if any annotation processing occurred.
374 **/
375 protected boolean annotationProcessingOccurred;
376
377 /**
378 * Flag set if any implicit source files read.
379 **/
380 protected boolean implicitSourceFilesRead;
381
382 private boolean enterDone;
383
384 protected CompileStates compileStates;
385
386 private boolean hasCodeReflectionModule;
387
388 /** Construct a new compiler using a shared context.
389 */
390 @SuppressWarnings("this-escape")
391 public JavaCompiler(Context context) {
392 this.context = context;
393 context.put(compilerKey, this);
394
395 // if fileManager not already set, register the JavacFileManager to be used
396 if (context.get(JavaFileManager.class) == null)
397 JavacFileManager.preRegister(context);
398
399 names = Names.instance(context);
400 log = Log.instance(context);
401 lintMapper = LintMapper.instance(context);
402 diagFactory = JCDiagnostic.Factory.instance(context);
403 finder = ClassFinder.instance(context);
404 reader = ClassReader.instance(context);
405 make = TreeMaker.instance(context);
406 writer = ClassWriter.instance(context);
407 jniWriter = JNIWriter.instance(context);
408 enter = Enter.instance(context);
409 todo = Todo.instance(context);
410
411 fileManager = context.get(JavaFileManager.class);
412 parserFactory = ParserFactory.instance(context);
413 compileStates = CompileStates.instance(context);
414
415 try {
416 // catch completion problems with predefineds
417 syms = Symtab.instance(context);
418 } catch (CompletionFailure ex) {
419 // inlined Check.completionError as it is not initialized yet
420 log.error(Errors.CantAccess(ex.sym, ex.getDetailValue()));
421 }
422 source = Source.instance(context);
423 attr = Attr.instance(context);
424 analyzer = Analyzer.instance(context);
425 chk = Check.instance(context);
426 gen = Gen.instance(context);
427 flow = Flow.instance(context);
428 warningAnalyzer = WarningAnalyzer.instance(context);
429 transTypes = TransTypes.instance(context);
430 lower = Lower.instance(context);
431 annotate = Annotate.instance(context);
432 types = Types.instance(context);
433 taskListener = MultiTaskListener.instance(context);
434 modules = Modules.instance(context);
435 moduleFinder = ModuleFinder.instance(context);
436 diags = Factory.instance(context);
437 dcfh = DeferredCompletionFailureHandler.instance(context);
438
439 finder.sourceCompleter = sourceCompleter;
440 modules.findPackageInFile = this::findPackageInFile;
441 moduleFinder.moduleNameFromSourceReader = this::readModuleName;
442
443 options = Options.instance(context);
444
445 verbose = options.isSet(VERBOSE);
446 sourceOutput = options.isSet(PRINTSOURCE); // used to be -s
447 lineDebugInfo = options.isUnset(G_CUSTOM) ||
448 options.isSet(G_CUSTOM, "lines");
449 genEndPos = options.isSet(XJCOV) ||
450 context.get(DiagnosticListener.class) != null;
451 devVerbose = options.isSet("dev");
452 processPcks = options.isSet("process.packages");
453 werrorAny = options.isSet(WERROR) || options.isSet(WERROR_CUSTOM, Option.LINT_CUSTOM_ALL);
454 werrorLint = options.getLintCategoriesOf(WERROR, LintCategory::newEmptySet);
455
456 verboseCompilePolicy = options.isSet("verboseCompilePolicy");
457
458 compilePolicy = CompilePolicy.decode(options.get("compilePolicy"));
459
460 implicitSourcePolicy = ImplicitSourcePolicy.decode(options.get("-implicit"));
461
462 completionFailureName =
463 options.isSet("failcomplete")
464 ? names.fromString(options.get("failcomplete"))
465 : null;
466
467 shouldStopPolicyIfError =
468 options.isSet("should-stop.at") // backwards compatible
469 ? CompileState.valueOf(options.get("should-stop.at"))
470 : options.isSet("should-stop.ifError")
471 ? CompileState.valueOf(options.get("should-stop.ifError"))
472 : CompileState.INIT;
473 shouldStopPolicyIfNoError =
474 options.isSet("should-stop.ifNoError")
475 ? CompileState.valueOf(options.get("should-stop.ifNoError"))
476 : CompileState.GENERATE;
477
478 if (options.isUnset("diags.legacy"))
479 log.setDiagnosticFormatter(RichDiagnosticFormatter.instance(context));
480
481 PlatformDescription platformProvider = context.get(PlatformDescription.class);
482
483 if (platformProvider != null)
484 closeables = closeables.prepend(platformProvider);
485
486 silentFail = new Symbol(ABSENT_TYP, 0, names.empty, Type.noType, syms.rootPackage) {
487 @DefinedBy(Api.LANGUAGE_MODEL)
488 public <R, P> R accept(ElementVisitor<R, P> v, P p) {
489 return v.visitUnknown(this, p);
490 }
491 @Override
492 public boolean exists() {
493 return false;
494 }
495 };
496
497 }
498
499 /* Switches:
500 */
501
502 /** Verbose output.
503 */
504 public boolean verbose;
505
506 /** Emit plain Java source files rather than class files.
507 */
508 public boolean sourceOutput;
509
510
511 /** Generate code with the LineNumberTable attribute for debugging
512 */
513 public boolean lineDebugInfo;
514
515 /** Switch: should we store the ending positions?
516 */
517 public boolean genEndPos;
518
519 /** Switch: should we debug ignored exceptions
520 */
521 protected boolean devVerbose;
522
523 /** Switch: should we (annotation) process packages as well
524 */
525 protected boolean processPcks;
526
527 /** Switch: treat any kind of warning (lint or non-lint) as an error.
528 */
529 protected boolean werrorAny;
530
531 /** Switch: treat lint warnings in the specified {@link LintCategory}s as errors.
532 */
533 protected EnumSet<LintCategory> werrorLint;
534
535 /** Switch: is annotation processing requested explicitly via
536 * CompilationTask.setProcessors?
537 */
538 protected boolean explicitAnnotationProcessingRequested = false;
539
540 /**
541 * The policy for the order in which to perform the compilation
542 */
543 protected CompilePolicy compilePolicy;
544
545 /**
546 * The policy for what to do with implicitly read source files
547 */
548 protected ImplicitSourcePolicy implicitSourcePolicy;
549
550 /**
551 * Report activity related to compilePolicy
552 */
553 public boolean verboseCompilePolicy;
554
555 /**
556 * Policy of how far to continue compilation after errors have occurred.
557 * Set this to minimum CompileState (INIT) to stop as soon as possible
558 * after errors.
559 */
560 public CompileState shouldStopPolicyIfError;
561
562 /**
563 * Policy of how far to continue compilation when no errors have occurred.
564 * Set this to maximum CompileState (GENERATE) to perform full compilation.
565 * Set this lower to perform partial compilation, such as -proc:only.
566 */
567 public CompileState shouldStopPolicyIfNoError;
568
569 /** A queue of all as yet unattributed classes.
570 */
571 public Todo todo;
572
573 /** A list of items to be closed when the compilation is complete.
574 */
575 public List<Closeable> closeables = List.nil();
576
577 /** The set of currently compiled inputfiles, needed to ensure
578 * we don't accidentally overwrite an input file when -s is set.
579 * initialized by `compile'.
580 */
581 protected Set<JavaFileObject> inputFiles = new HashSet<>();
582
583 /** Used by the resolveBinaryNameOrIdent to say that the given type cannot be found, and that
584 * an error has already been produced about that.
585 */
586 private final Symbol silentFail;
587
588 protected boolean shouldStop(CompileState cs) {
589 CompileState shouldStopPolicy = (errorCount() > 0 || unrecoverableError())
590 ? shouldStopPolicyIfError
591 : shouldStopPolicyIfNoError;
592 return cs.isAfter(shouldStopPolicy);
593 }
594
595 /** The number of errors reported so far.
596 */
597 public int errorCount() {
598 log.reportOutstandingWarnings();
599 if (log.nerrors == 0 && log.nwarnings > 0 &&
600 (werrorAny || werrorLint.clone().removeAll(log.lintWarnings))) {
601 log.error(Errors.WarningsAndWerror);
602 }
603 return log.nerrors;
604 }
605
606 /**
607 * Should warnings in the given lint category be treated as errors due to a {@code -Werror} flag?
608 */
609 public boolean isWerror(LintCategory lc) {
610 return werrorAny || werrorLint.contains(lc);
611 }
612
613 protected final <T> Queue<T> stopIfError(CompileState cs, Queue<T> queue) {
614 return shouldStop(cs) ? new ListBuffer<T>() : queue;
615 }
616
617 protected final <T> List<T> stopIfError(CompileState cs, List<T> list) {
618 return shouldStop(cs) ? List.nil() : list;
619 }
620
621 /** The number of warnings reported so far.
622 */
623 public int warningCount() {
624 return log.nwarnings;
625 }
626
627 /** Try to open input stream with given name.
628 * Report an error if this fails.
629 * @param filename The file name of the input stream to be opened.
630 */
631 public CharSequence readSource(JavaFileObject filename) {
632 try {
633 inputFiles.add(filename);
634 return filename.getCharContent(false);
635 } catch (IOException e) {
636 log.error(Errors.ErrorReadingFile(filename, JavacFileManager.getMessage(e)));
637 return null;
638 }
639 }
640
641 /** Parse contents of input stream.
642 * @param filename The name of the file from which input stream comes.
643 * @param content The characters to be parsed.
644 */
645 protected JCCompilationUnit parse(JavaFileObject filename, CharSequence content) {
646 return parse(filename, content, false);
647 }
648
649 /** Parse contents of input stream.
650 * @param filename The name of the file from which input stream comes.
651 * @param content The characters to be parsed.
652 * @param silent true if TaskListeners should not be notified
653 */
654 private JCCompilationUnit parse(JavaFileObject filename, CharSequence content, boolean silent) {
655 long msec = now();
656 JCCompilationUnit tree = make.TopLevel(List.nil());
657 lintMapper.startParsingFile(filename);
658 if (content != null) {
659 if (verbose) {
660 log.printVerbose("parsing.started", filename);
661 }
662 if (!taskListener.isEmpty() && !silent) {
663 TaskEvent e = new TaskEvent(TaskEvent.Kind.PARSE, filename);
664 taskListener.started(e);
665 keepComments = true;
666 genEndPos = true;
667 }
668 Parser parser = parserFactory.newParser(content, keepComments(), genEndPos,
669 lineDebugInfo, filename.isNameCompatible("module-info", Kind.SOURCE));
670 tree = parser.parseCompilationUnit();
671 if (verbose) {
672 log.printVerbose("parsing.done", Long.toString(elapsed(msec)));
673 }
674 }
675
676 tree.sourcefile = filename;
677 lintMapper.finishParsingFile(tree);
678
679 if (content != null && !taskListener.isEmpty() && !silent) {
680 TaskEvent e = new TaskEvent(TaskEvent.Kind.PARSE, tree);
681 taskListener.finished(e);
682 }
683
684 return tree;
685 }
686 // where
687 public boolean keepComments = false;
688 protected boolean keepComments() {
689 return keepComments || sourceOutput;
690 }
691
692
693 /** Parse contents of file.
694 * @param filename The name of the file to be parsed.
695 */
696 @Deprecated
697 public JCTree.JCCompilationUnit parse(String filename) {
698 JavacFileManager fm = (JavacFileManager)fileManager;
699 return parse(fm.getJavaFileObjectsFromStrings(List.of(filename)).iterator().next());
700 }
701
702 /** Parse contents of file.
703 * @param filename The name of the file to be parsed.
704 */
705 public JCTree.JCCompilationUnit parse(JavaFileObject filename) {
706 JavaFileObject prev = log.useSource(filename);
707 try {
708 JCTree.JCCompilationUnit t = parse(filename, readSource(filename));
709 if (t.endPositions != null)
710 log.setEndPosTable(filename, t.endPositions);
711 return t;
712 } finally {
713 log.useSource(prev);
714 }
715 }
716
717 /** Resolve an identifier which may be the binary name of a class or
718 * the Java name of a class or package.
719 * @param name The name to resolve
720 */
721 public Symbol resolveBinaryNameOrIdent(String name) {
722 ModuleSymbol msym;
723 String typeName;
724 int sep = name.indexOf('/');
725 if (sep == -1) {
726 msym = modules.getDefaultModule();
727 typeName = name;
728 } else if (Feature.MODULES.allowedInSource(source)) {
729 Name modName = names.fromString(name.substring(0, sep));
730
731 msym = moduleFinder.findModule(modName);
732 typeName = name.substring(sep + 1);
733 } else {
734 log.error(Errors.InvalidModuleSpecifier(name));
735 return silentFail;
736 }
737
738 return resolveBinaryNameOrIdent(msym, typeName);
739 }
740
741 /** Resolve an identifier which may be the binary name of a class or
742 * the Java name of a class or package.
743 * @param msym The module in which the search should be performed
744 * @param name The name to resolve
745 */
746 public Symbol resolveBinaryNameOrIdent(ModuleSymbol msym, String name) {
747 try {
748 Name flatname = names.fromString(name.replace("/", "."));
749 return finder.loadClass(msym, flatname);
750 } catch (CompletionFailure ignore) {
751 return resolveIdent(msym, name);
752 }
753 }
754
755 /** Resolve an identifier.
756 * @param msym The module in which the search should be performed
757 * @param name The identifier to resolve
758 */
759 public Symbol resolveIdent(ModuleSymbol msym, String name) {
760 if (name.equals(""))
761 return syms.errSymbol;
762 JavaFileObject prev = log.useSource(null);
763 try {
764 JCExpression tree = null;
765 for (String s : name.split("\\.", -1)) {
766 if (!SourceVersion.isIdentifier(s)) // TODO: check for keywords
767 return syms.errSymbol;
768 tree = (tree == null) ? make.Ident(names.fromString(s))
769 : make.Select(tree, names.fromString(s));
770 }
771 JCCompilationUnit toplevel =
772 make.TopLevel(List.nil());
773 toplevel.modle = msym;
774 toplevel.packge = msym.unnamedPackage;
775 return attr.attribIdent(tree, toplevel);
776 } finally {
777 log.useSource(prev);
778 }
779 }
780
781 /** Generate code and emit a class file for a given class
782 * @param env The attribution environment of the outermost class
783 * containing this class.
784 * @param cdef The class definition from which code is generated.
785 */
786 JavaFileObject genCode(Env<AttrContext> env, JCClassDecl cdef) throws IOException {
787 try {
788 if (gen.genClass(env, cdef) && (errorCount() == 0))
789 return writer.writeClass(cdef.sym);
790 } catch (ClassWriter.PoolOverflow ex) {
791 log.error(cdef.pos(), Errors.LimitPool);
792 } catch (ClassWriter.StringOverflow ex) {
793 log.error(cdef.pos(),
794 Errors.LimitStringOverflow(ex.value.substring(0, 20)));
795 } catch (CompletionFailure ex) {
796 chk.completionError(cdef.pos(), ex);
797 }
798 return null;
799 }
800
801 /** Emit plain Java source for a class.
802 * @param env The attribution environment of the outermost class
803 * containing this class.
804 * @param cdef The class definition to be printed.
805 */
806 JavaFileObject printSource(Env<AttrContext> env, JCClassDecl cdef) throws IOException {
807 JavaFileObject outFile
808 = fileManager.getJavaFileForOutput(CLASS_OUTPUT,
809 cdef.sym.flatname.toString(),
810 JavaFileObject.Kind.SOURCE,
811 null);
812 if (inputFiles.contains(outFile)) {
813 log.error(cdef.pos(), Errors.SourceCantOverwriteInputFile(outFile));
814 return null;
815 } else {
816 try (BufferedWriter out = new BufferedWriter(outFile.openWriter())) {
817 new Pretty(out, true).printUnit(env.toplevel, cdef);
818 if (verbose)
819 log.printVerbose("wrote.file", outFile.getName());
820 }
821 return outFile;
822 }
823 }
824
825 /** Compile a source file that has been accessed by the class finder.
826 * @param c The class the source file of which needs to be compiled.
827 */
828 private void readSourceFile(ClassSymbol c) throws CompletionFailure {
829 readSourceFile(null, c);
830 }
831
832 /** Compile a ClassSymbol from source, optionally using the given compilation unit as
833 * the source tree.
834 * @param tree the compilation unit in which the given ClassSymbol resides,
835 * or null if should be parsed from source
836 * @param c the ClassSymbol to complete
837 */
838 public void readSourceFile(JCCompilationUnit tree, ClassSymbol c) throws CompletionFailure {
839 if (completionFailureName == c.fullname) {
840 throw new CompletionFailure(
841 c, () -> diagFactory.fragment(Fragments.UserSelectedCompletionFailure), dcfh);
842 }
843 JavaFileObject filename = c.classfile;
844 JavaFileObject prev = log.useSource(filename);
845
846 if (tree == null) {
847 try {
848 tree = parse(filename, filename.getCharContent(false));
849 } catch (IOException e) {
850 log.error(Errors.ErrorReadingFile(filename, JavacFileManager.getMessage(e)));
851 tree = make.TopLevel(List.<JCTree>nil());
852 } finally {
853 log.useSource(prev);
854 }
855 }
856
857 if (!taskListener.isEmpty()) {
858 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, tree);
859 taskListener.started(e);
860 }
861
862 // Process module declarations.
863 // If module resolution fails, ignore trees, and if trying to
864 // complete a specific symbol, throw CompletionFailure.
865 // Note that if module resolution failed, we may not even
866 // have enough modules available to access java.lang, and
867 // so risk getting FatalError("no.java.lang") from MemberEnter.
868 if (!modules.enter(List.of(tree), c)) {
869 throw new CompletionFailure(c, () -> diags.fragment(Fragments.CantResolveModules), dcfh);
870 }
871
872 enter.complete(List.of(tree), c);
873
874 if (!taskListener.isEmpty()) {
875 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, tree);
876 taskListener.finished(e);
877 }
878
879 if (enter.getEnv(c) == null) {
880 boolean isPkgInfo =
881 tree.sourcefile.isNameCompatible("package-info",
882 JavaFileObject.Kind.SOURCE);
883 boolean isModuleInfo =
884 tree.sourcefile.isNameCompatible("module-info",
885 JavaFileObject.Kind.SOURCE);
886 if (isModuleInfo) {
887 if (enter.getEnv(tree.modle) == null) {
888 JCDiagnostic diag =
889 diagFactory.fragment(Fragments.FileDoesNotContainModule);
890 throw new ClassFinder.BadClassFile(c, filename, diag, diagFactory, dcfh);
891 }
892 } else if (isPkgInfo) {
893 if (enter.getEnv(tree.packge) == null) {
894 JCDiagnostic diag =
895 diagFactory.fragment(Fragments.FileDoesNotContainPackage(c.location()));
896 throw new ClassFinder.BadClassFile(c, filename, diag, diagFactory, dcfh);
897 }
898 } else {
899 JCDiagnostic diag =
900 diagFactory.fragment(Fragments.FileDoesntContainClass(c.getQualifiedName()));
901 throw new ClassFinder.BadClassFile(c, filename, diag, diagFactory, dcfh);
902 }
903 }
904
905 implicitSourceFilesRead = true;
906 }
907
908 /** Track when the JavaCompiler has been used to compile something. */
909 private boolean hasBeenUsed = false;
910 private long start_msec = 0;
911 public long elapsed_msec = 0;
912
913 public void compile(List<JavaFileObject> sourceFileObject)
914 throws Throwable {
915 compile(sourceFileObject, List.nil(), null, List.nil());
916 }
917
918 /**
919 * Main method: compile a list of files, return all compiled classes
920 *
921 * @param sourceFileObjects file objects to be compiled
922 * @param classnames class names to process for annotations
923 * @param processors user provided annotation processors to bypass
924 * discovery, {@code null} means that no processors were provided
925 * @param addModules additional root modules to be used during
926 * module resolution.
927 */
928 public void compile(Collection<JavaFileObject> sourceFileObjects,
929 Collection<String> classnames,
930 Iterable<? extends Processor> processors,
931 Collection<String> addModules)
932 {
933 if (!taskListener.isEmpty()) {
934 taskListener.started(new TaskEvent(TaskEvent.Kind.COMPILATION));
935 }
936
937 // as a JavaCompiler can only be used once, throw an exception if
938 // it has been used before.
939 if (hasBeenUsed)
940 checkReusable();
941 hasBeenUsed = true;
942
943 start_msec = now();
944
945 try {
946 initProcessAnnotations(processors, sourceFileObjects, classnames);
947
948 for (String className : classnames) {
949 int sep = className.indexOf('/');
950 if (sep != -1) {
951 modules.addExtraAddModules(className.substring(0, sep));
952 }
953 }
954
955 for (String moduleName : addModules) {
956 modules.addExtraAddModules(moduleName);
957 }
958
959 // These method calls must be chained to avoid memory leaks
960 processAnnotations(
961 enterTrees(
962 stopIfError(CompileState.ENTER,
963 initModules(stopIfError(CompileState.ENTER, parseFiles(sourceFileObjects))))
964 ),
965 classnames
966 );
967
968 // If it's safe to do so, skip attr / flow / gen for implicit classes
969 if (taskListener.isEmpty() &&
970 implicitSourcePolicy == ImplicitSourcePolicy.NONE) {
971 todo.retainFiles(inputFiles);
972 }
973
974 if (!CompileState.ATTR.isAfter(shouldStopPolicyIfNoError)) {
975 switch (compilePolicy) {
976 case SIMPLE:
977 generate(desugar(warn(flow(attribute(todo)))));
978 break;
979
980 case BY_FILE: {
981 Queue<Queue<Env<AttrContext>>> q = todo.groupByFile();
982 while (!q.isEmpty() && !shouldStop(CompileState.ATTR)) {
983 generate(desugar(warn(flow(attribute(q.remove())))));
984 }
985 }
986 break;
987
988 case BY_TODO:
989 while (!todo.isEmpty())
990 generate(desugar(warn(flow(attribute(todo.remove())))));
991 break;
992
993 default:
994 Assert.error("unknown compile policy");
995 }
996 }
997 } catch (Abort ex) {
998 if (devVerbose)
999 ex.printStackTrace(System.err);
1000
1001 // In case an Abort was thrown before processAnnotations could be called,
1002 // we could have deferred diagnostics that haven't been reported.
1003 reportDeferredDiagnosticAndClearHandler();
1004 } finally {
1005 if (verbose) {
1006 elapsed_msec = elapsed(start_msec);
1007 log.printVerbose("total", Long.toString(elapsed_msec));
1008 }
1009
1010 reportDeferredDiagnostics();
1011
1012 if (!log.hasDiagnosticListener()) {
1013 printCount("error", errorCount());
1014 printCount("warn", warningCount());
1015 printSuppressedCount(errorCount(), log.nsuppressederrors, "count.error.recompile");
1016 printSuppressedCount(warningCount(), log.nsuppressedwarns, "count.warn.recompile");
1017 }
1018 if (!taskListener.isEmpty()) {
1019 taskListener.finished(new TaskEvent(TaskEvent.Kind.COMPILATION));
1020 }
1021 close();
1022 if (procEnvImpl != null)
1023 procEnvImpl.close();
1024 }
1025 }
1026
1027 protected void checkReusable() {
1028 throw new AssertionError("attempt to reuse JavaCompiler");
1029 }
1030
1031 /**
1032 * The list of classes explicitly supplied on the command line for compilation.
1033 * Not always populated.
1034 */
1035 private List<JCClassDecl> rootClasses;
1036
1037 /**
1038 * Parses a list of files.
1039 */
1040 public List<JCCompilationUnit> parseFiles(Iterable<JavaFileObject> fileObjects) {
1041 return InitialFileParser.instance(context).parse(fileObjects);
1042 }
1043
1044 public List<JCCompilationUnit> parseFiles(Iterable<JavaFileObject> fileObjects, boolean force) {
1045 if (!force && shouldStop(CompileState.PARSE))
1046 return List.nil();
1047
1048 //parse all files
1049 ListBuffer<JCCompilationUnit> trees = new ListBuffer<>();
1050 Set<JavaFileObject> filesSoFar = new HashSet<>();
1051 for (JavaFileObject fileObject : fileObjects) {
1052 if (!filesSoFar.contains(fileObject)) {
1053 filesSoFar.add(fileObject);
1054 trees.append(parse(fileObject));
1055 }
1056 }
1057 return trees.toList();
1058 }
1059
1060 /**
1061 * Returns true iff the compilation will continue after annotation processing
1062 * is done.
1063 */
1064 public boolean continueAfterProcessAnnotations() {
1065 return !shouldStop(CompileState.ATTR);
1066 }
1067
1068 public List<JCCompilationUnit> initModules(List<JCCompilationUnit> roots) {
1069 modules.initModules(roots);
1070
1071 if (modules.modulesInitialized()) {
1072 // This has to happen precisely here. At this point, we have all we need to
1073 // determine whether jdk.incubator.module is part of the module graph
1074 // but we have yet to trigger an ENTER event. This gives the code reflection plugin
1075 // a window to check whether code reflection should be enabled for this compilation unit.
1076 hasCodeReflectionModule = modules.getObservableModule(names.jdk_incubator_code) != null;
1077 }
1078
1079 if (roots.isEmpty()) {
1080 enterDone();
1081 }
1082 return roots;
1083 }
1084
1085 /**
1086 * Enter the symbols found in a list of parse trees.
1087 * As a side-effect, this puts elements on the "todo" list.
1088 * Also stores a list of all top level classes in rootClasses.
1089 */
1090 public List<JCCompilationUnit> enterTrees(List<JCCompilationUnit> roots) {
1091 //enter symbols for all files
1092 if (!taskListener.isEmpty()) {
1093 for (JCCompilationUnit unit: roots) {
1094 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, unit);
1095 taskListener.started(e);
1096 }
1097 }
1098
1099 enter.main(roots);
1100
1101 enterDone();
1102
1103 if (!taskListener.isEmpty()) {
1104 for (JCCompilationUnit unit: roots) {
1105 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, unit);
1106 taskListener.finished(e);
1107 }
1108 }
1109
1110 // If generating source, or if tracking public apis,
1111 // then remember the classes declared in
1112 // the original compilation units listed on the command line.
1113 if (sourceOutput) {
1114 ListBuffer<JCClassDecl> cdefs = new ListBuffer<>();
1115 for (JCCompilationUnit unit : roots) {
1116 for (List<JCTree> defs = unit.defs;
1117 defs.nonEmpty();
1118 defs = defs.tail) {
1119 if (defs.head instanceof JCClassDecl classDecl)
1120 cdefs.append(classDecl);
1121 }
1122 }
1123 rootClasses = cdefs.toList();
1124 }
1125
1126 // Ensure the input files have been recorded. Although this is normally
1127 // done by readSource, it may not have been done if the trees were read
1128 // in a prior round of annotation processing, and the trees have been
1129 // cleaned and are being reused.
1130 for (JCCompilationUnit unit : roots) {
1131 inputFiles.add(unit.sourcefile);
1132 }
1133
1134 return roots;
1135 }
1136
1137 /**
1138 * Set to true to enable skeleton annotation processing code.
1139 * Currently, we assume this variable will be replaced more
1140 * advanced logic to figure out if annotation processing is
1141 * needed.
1142 */
1143 boolean processAnnotations = false;
1144
1145 Log.DeferredDiagnosticHandler deferredDiagnosticHandler;
1146
1147 /**
1148 * Object to handle annotation processing.
1149 */
1150 private JavacProcessingEnvironment procEnvImpl = null;
1151
1152 /**
1153 * Check if we should process annotations.
1154 * If so, and if no scanner is yet registered, then set up the DocCommentScanner
1155 * to catch doc comments, and set keepComments so the parser records them in
1156 * the compilation unit.
1157 *
1158 * @param processors user provided annotation processors to bypass
1159 * discovery, {@code null} means that no processors were provided
1160 */
1161 public void initProcessAnnotations(Iterable<? extends Processor> processors,
1162 Collection<? extends JavaFileObject> initialFiles,
1163 Collection<String> initialClassNames) {
1164 if (processors != null && processors.iterator().hasNext())
1165 explicitAnnotationProcessingRequested = true;
1166
1167 if (options.isSet(PROC, "none")) {
1168 processAnnotations = false;
1169 } else if (procEnvImpl == null) {
1170 procEnvImpl = JavacProcessingEnvironment.instance(context);
1171 procEnvImpl.setProcessors(processors);
1172
1173 // Process annotations if processing is requested and there
1174 // is at least one Processor available.
1175 processAnnotations = procEnvImpl.atLeastOneProcessor() &&
1176 explicitAnnotationProcessingRequested();
1177
1178 if (processAnnotations) {
1179 options.put("parameters", "parameters");
1180 reader.saveParameterNames = true;
1181 keepComments = true;
1182 genEndPos = true;
1183 if (!taskListener.isEmpty())
1184 taskListener.started(new TaskEvent(TaskEvent.Kind.ANNOTATION_PROCESSING));
1185 deferredDiagnosticHandler = log.new DeferredDiagnosticHandler();
1186 procEnvImpl.getFiler().setInitialState(initialFiles, initialClassNames);
1187 }
1188 } else { // free resources
1189 procEnvImpl.close();
1190 }
1191 }
1192
1193 // TODO: called by JavacTaskImpl
1194 public void processAnnotations(List<JCCompilationUnit> roots) {
1195 processAnnotations(roots, List.nil());
1196 }
1197
1198 /**
1199 * Process any annotations found in the specified compilation units.
1200 * @param roots a list of compilation units
1201 */
1202 // Implementation note: when this method is called, log.deferredDiagnostics
1203 // will have been set true by initProcessAnnotations, meaning that any diagnostics
1204 // that are reported will go into the log.deferredDiagnostics queue.
1205 // By the time this method exits, log.deferDiagnostics must be set back to false,
1206 // and all deferredDiagnostics must have been handled: i.e. either reported
1207 // or determined to be transient, and therefore suppressed.
1208 public void processAnnotations(List<JCCompilationUnit> roots,
1209 Collection<String> classnames) {
1210 if (shouldStop(CompileState.PROCESS)) {
1211 // Errors were encountered.
1212 // Unless all the errors are resolve errors, the errors were parse errors
1213 // or other errors during enter which cannot be fixed by running
1214 // any annotation processors.
1215 if (processAnnotations) {
1216 reportDeferredDiagnosticAndClearHandler();
1217 return ;
1218 }
1219 }
1220
1221 // ASSERT: processAnnotations and procEnvImpl should have been set up by
1222 // by initProcessAnnotations
1223
1224 // NOTE: The !classnames.isEmpty() checks should be refactored to Main.
1225
1226 if (!processAnnotations) {
1227 // If there are no annotation processors present, and
1228 // annotation processing is to occur with compilation,
1229 // emit a warning.
1230 if (options.isSet(PROC, "only")) {
1231 log.warning(Warnings.ProcProcOnlyRequestedNoProcs);
1232 todo.clear();
1233 }
1234 // If not processing annotations, classnames must be empty
1235 if (!classnames.isEmpty()) {
1236 log.error(Errors.ProcNoExplicitAnnotationProcessingRequested(classnames));
1237 }
1238 Assert.checkNull(deferredDiagnosticHandler);
1239 return ; // continue regular compilation
1240 }
1241
1242 Assert.checkNonNull(deferredDiagnosticHandler);
1243
1244 try {
1245 List<ClassSymbol> classSymbols = List.nil();
1246 List<PackageSymbol> pckSymbols = List.nil();
1247 if (!classnames.isEmpty()) {
1248 // Check for explicit request for annotation
1249 // processing
1250 if (!explicitAnnotationProcessingRequested()) {
1251 log.error(Errors.ProcNoExplicitAnnotationProcessingRequested(classnames));
1252 reportDeferredDiagnosticAndClearHandler();
1253 return ; // TODO: Will this halt compilation?
1254 } else {
1255 boolean errors = false;
1256 for (String nameStr : classnames) {
1257 Symbol sym = resolveBinaryNameOrIdent(nameStr);
1258 if (sym == null ||
1259 (sym.kind == PCK && !processPcks) ||
1260 sym.kind == ABSENT_TYP) {
1261 if (sym != silentFail)
1262 log.error(Errors.ProcCantFindClass(nameStr));
1263 errors = true;
1264 continue;
1265 }
1266 try {
1267 if (sym.kind == PCK)
1268 sym.complete();
1269 if (sym.exists()) {
1270 if (sym.kind == PCK)
1271 pckSymbols = pckSymbols.prepend((PackageSymbol)sym);
1272 else
1273 classSymbols = classSymbols.prepend((ClassSymbol)sym);
1274 continue;
1275 }
1276 Assert.check(sym.kind == PCK);
1277 log.warning(Warnings.ProcPackageDoesNotExist(nameStr));
1278 pckSymbols = pckSymbols.prepend((PackageSymbol)sym);
1279 } catch (CompletionFailure e) {
1280 log.error(Errors.ProcCantFindClass(nameStr));
1281 errors = true;
1282 continue;
1283 }
1284 }
1285 if (errors) {
1286 reportDeferredDiagnosticAndClearHandler();
1287 return ;
1288 }
1289 }
1290 }
1291 try {
1292 annotationProcessingOccurred =
1293 procEnvImpl.doProcessing(roots,
1294 classSymbols,
1295 pckSymbols,
1296 deferredDiagnosticHandler);
1297 // doProcessing will have handled deferred diagnostics
1298 } finally {
1299 procEnvImpl.close();
1300 }
1301 } catch (CompletionFailure ex) {
1302 log.error(Errors.CantAccess(ex.sym, ex.getDetailValue()));
1303 reportDeferredDiagnosticAndClearHandler();
1304 }
1305 }
1306
1307 private boolean unrecoverableError() {
1308 if (deferredDiagnosticHandler != null) {
1309 for (JCDiagnostic d: deferredDiagnosticHandler.getDiagnostics()) {
1310 if (d.getKind() == JCDiagnostic.Kind.ERROR && !d.isFlagSet(RECOVERABLE))
1311 return true;
1312 }
1313 }
1314 return false;
1315 }
1316
1317 boolean explicitAnnotationProcessingRequested() {
1318 return
1319 explicitAnnotationProcessingRequested ||
1320 explicitAnnotationProcessingRequested(options, fileManager);
1321 }
1322
1323 static boolean explicitAnnotationProcessingRequested(Options options, JavaFileManager fileManager) {
1324 return
1325 options.isSet(PROCESSOR) ||
1326 options.isSet(PROCESSOR_PATH) ||
1327 options.isSet(PROCESSOR_MODULE_PATH) ||
1328 options.isSet(PROC, "only") ||
1329 options.isSet(PROC, "full") ||
1330 options.isSet(A) ||
1331 options.isSet(XPRINT) ||
1332 fileManager.hasLocation(ANNOTATION_PROCESSOR_PATH);
1333 // Skipping -XprintRounds and -XprintProcessorInfo
1334 }
1335
1336 public void setDeferredDiagnosticHandler(Log.DeferredDiagnosticHandler deferredDiagnosticHandler) {
1337 this.deferredDiagnosticHandler = deferredDiagnosticHandler;
1338 }
1339
1340 /**
1341 * Attribute a list of parse trees, such as found on the "todo" list.
1342 * Note that attributing classes may cause additional files to be
1343 * parsed and entered via the SourceCompleter.
1344 * Attribution of the entries in the list does not stop if any errors occur.
1345 * @return a list of environments for attribute classes.
1346 */
1347 public Queue<Env<AttrContext>> attribute(Queue<Env<AttrContext>> envs) {
1348 ListBuffer<Env<AttrContext>> results = new ListBuffer<>();
1349 while (!envs.isEmpty())
1350 results.append(attribute(envs.remove()));
1351 return stopIfError(CompileState.ATTR, results);
1352 }
1353
1354 /**
1355 * Attribute a parse tree.
1356 * @return the attributed parse tree
1357 */
1358 public Env<AttrContext> attribute(Env<AttrContext> env) {
1359 if (compileStates.isDone(env, CompileState.ATTR))
1360 return env;
1361
1362 if (verboseCompilePolicy)
1363 printNote("[attribute " + env.enclClass.sym + "]");
1364 if (verbose)
1365 log.printVerbose("checking.attribution", env.enclClass.sym);
1366
1367 if (!taskListener.isEmpty()) {
1368 TaskEvent e = newAnalyzeTaskEvent(env);
1369 taskListener.started(e);
1370 }
1371
1372 JavaFileObject prev = log.useSource(
1373 env.enclClass.sym.sourcefile != null ?
1374 env.enclClass.sym.sourcefile :
1375 env.toplevel.sourcefile);
1376 try {
1377 attr.attrib(env);
1378 if (errorCount() > 0 && !shouldStop(CompileState.ATTR)) {
1379 //if in fail-over mode, ensure that AST expression nodes
1380 //are correctly initialized (e.g. they have a type/symbol)
1381 attr.postAttr(env.tree);
1382 }
1383 compileStates.put(env, CompileState.ATTR);
1384 }
1385 finally {
1386 log.useSource(prev);
1387 }
1388
1389 return env;
1390 }
1391
1392 /**
1393 * Perform dataflow checks on attributed parse trees.
1394 * These include checks for definite assignment and unreachable statements.
1395 * If any errors occur, an empty list will be returned.
1396 * @return the list of attributed parse trees
1397 */
1398 public Queue<Env<AttrContext>> flow(Queue<Env<AttrContext>> envs) {
1399 ListBuffer<Env<AttrContext>> results = new ListBuffer<>();
1400 for (Env<AttrContext> env: envs) {
1401 flow(env, results);
1402 }
1403 return stopIfError(CompileState.FLOW, results);
1404 }
1405
1406 /**
1407 * Perform dataflow checks on an attributed parse tree.
1408 */
1409 public Queue<Env<AttrContext>> flow(Env<AttrContext> env) {
1410 ListBuffer<Env<AttrContext>> results = new ListBuffer<>();
1411 flow(env, results);
1412 return stopIfError(CompileState.FLOW, results);
1413 }
1414
1415 /**
1416 * Perform dataflow checks on an attributed parse tree.
1417 */
1418 protected void flow(Env<AttrContext> env, Queue<Env<AttrContext>> results) {
1419 if (compileStates.isDone(env, CompileState.FLOW)) {
1420 results.add(env);
1421 return;
1422 }
1423
1424 try {
1425 if (shouldStop(CompileState.FLOW))
1426 return;
1427
1428 if (verboseCompilePolicy)
1429 printNote("[flow " + env.enclClass.sym + "]");
1430 JavaFileObject prev = log.useSource(
1431 env.enclClass.sym.sourcefile != null ?
1432 env.enclClass.sym.sourcefile :
1433 env.toplevel.sourcefile);
1434 try {
1435 make.at(Position.FIRSTPOS);
1436 TreeMaker localMake = make.forToplevel(env.toplevel);
1437 flow.analyzeTree(env, localMake);
1438 compileStates.put(env, CompileState.FLOW);
1439
1440 if (shouldStop(CompileState.FLOW))
1441 return;
1442
1443 analyzer.flush(env);
1444
1445 results.add(env);
1446 }
1447 finally {
1448 log.useSource(prev);
1449 }
1450 }
1451 finally {
1452 if (!taskListener.isEmpty()) {
1453 TaskEvent e = newAnalyzeTaskEvent(env);
1454 taskListener.finished(e);
1455 }
1456 }
1457 }
1458
1459 /**
1460 * Check for various things to warn about.
1461 *
1462 * @return the list of attributed parse trees
1463 */
1464 public Queue<Env<AttrContext>> warn(Queue<Env<AttrContext>> envs) {
1465 ListBuffer<Env<AttrContext>> results = new ListBuffer<>();
1466 for (Env<AttrContext> env: envs) {
1467 warn(env, results);
1468 }
1469 return stopIfError(CompileState.WARN, results);
1470 }
1471
1472 /**
1473 * Check for various things to warn about in an attributed parse tree.
1474 */
1475 public Queue<Env<AttrContext>> warn(Env<AttrContext> env) {
1476 ListBuffer<Env<AttrContext>> results = new ListBuffer<>();
1477 warn(env, results);
1478 return stopIfError(CompileState.WARN, results);
1479 }
1480
1481 /**
1482 * Check for various things to warn about in an attributed parse tree.
1483 */
1484 protected void warn(Env<AttrContext> env, Queue<Env<AttrContext>> results) {
1485 if (compileStates.isDone(env, CompileState.WARN)) {
1486 results.add(env);
1487 return;
1488 }
1489
1490 if (shouldStop(CompileState.WARN))
1491 return;
1492
1493 if (verboseCompilePolicy)
1494 printNote("[warn " + env.enclClass.sym + "]");
1495 JavaFileObject prev = log.useSource(
1496 env.enclClass.sym.sourcefile != null ?
1497 env.enclClass.sym.sourcefile :
1498 env.toplevel.sourcefile);
1499 try {
1500 warningAnalyzer.analyzeTree(env);
1501 compileStates.put(env, CompileState.WARN);
1502 results.add(env);
1503 }
1504 finally {
1505 log.useSource(prev);
1506 }
1507 }
1508
1509 private TaskEvent newAnalyzeTaskEvent(Env<AttrContext> env) {
1510 JCCompilationUnit toplevel = env.toplevel;
1511 ClassSymbol sym;
1512 if (env.enclClass.sym == syms.predefClass) {
1513 if (TreeInfo.isModuleInfo(toplevel)) {
1514 sym = toplevel.modle.module_info;
1515 } else if (TreeInfo.isPackageInfo(toplevel)) {
1516 sym = toplevel.packge.package_info;
1517 } else {
1518 throw new IllegalStateException("unknown env.toplevel");
1519 }
1520 } else {
1521 sym = env.enclClass.sym;
1522 }
1523
1524 return new TaskEvent(TaskEvent.Kind.ANALYZE, toplevel, sym);
1525 }
1526
1527 /**
1528 * Prepare attributed parse trees, in conjunction with their attribution contexts,
1529 * for source or code generation.
1530 * If any errors occur, an empty list will be returned.
1531 * @return a list containing the classes to be generated
1532 */
1533 public Queue<Pair<Env<AttrContext>, JCClassDecl>> desugar(Queue<Env<AttrContext>> envs) {
1534 ListBuffer<Pair<Env<AttrContext>, JCClassDecl>> results = new ListBuffer<>();
1535 for (Env<AttrContext> env: envs)
1536 desugar(env, results);
1537 return stopIfError(CompileState.FLOW, results);
1538 }
1539
1540 HashMap<Env<AttrContext>, Queue<Pair<Env<AttrContext>, JCClassDecl>>> desugaredEnvs = new HashMap<>();
1541
1542 /**
1543 * Prepare attributed parse trees, in conjunction with their attribution contexts,
1544 * for source or code generation. If the file was not listed on the command line,
1545 * the current implicitSourcePolicy is taken into account.
1546 * The preparation stops as soon as an error is found.
1547 */
1548 protected void desugar(final Env<AttrContext> env, Queue<Pair<Env<AttrContext>, JCClassDecl>> results) {
1549 if (shouldStop(CompileState.TRANSTYPES))
1550 return;
1551
1552 if (implicitSourcePolicy == ImplicitSourcePolicy.NONE
1553 && !inputFiles.contains(env.toplevel.sourcefile)) {
1554 return;
1555 }
1556
1557 if (!modules.multiModuleMode && env.toplevel.modle != modules.getDefaultModule()) {
1558 //can only generate classfiles for a single module:
1559 return;
1560 }
1561
1562 if (compileStates.isDone(env, CompileState.LOWER)) {
1563 results.addAll(desugaredEnvs.get(env));
1564 return;
1565 }
1566
1567 // Ensure the file has reached the WARN state
1568 if (!compileStates.isDone(env, CompileState.WARN))
1569 warn(env);
1570
1571 /**
1572 * Ensure that superclasses of C are desugared before C itself. This is
1573 * required for two reasons: (i) as erasure (TransTypes) destroys
1574 * information needed in flow analysis and (ii) as some checks carried
1575 * out during lowering require that all synthetic fields/methods have
1576 * already been added to C and its superclasses.
1577 */
1578 class ScanNested extends TreeScanner {
1579 Set<Env<AttrContext>> dependencies = new LinkedHashSet<>();
1580 protected boolean hasLambdas;
1581 protected boolean hasPatterns;
1582 @Override
1583 public void visitClassDef(JCClassDecl node) {
1584 Type st = types.supertype(node.sym.type);
1585 boolean envForSuperTypeFound = false;
1586 while (!envForSuperTypeFound && st.hasTag(CLASS)) {
1587 ClassSymbol c = st.tsym.outermostClass();
1588 Env<AttrContext> stEnv = enter.getEnv(c);
1589 if (stEnv != null && env != stEnv) {
1590 if (dependencies.add(stEnv)) {
1591 boolean prevHasLambdas = hasLambdas;
1592 boolean prevHasPatterns = hasPatterns;
1593 try {
1594 scan(stEnv.tree);
1595 } finally {
1596 /*
1597 * ignore any updates to hasLambdas and hasPatterns
1598 * made during the nested scan, this ensures an
1599 * initialized LambdaToMethod or TransPatterns is
1600 * available only to those classes that contain
1601 * lambdas or patterns, respectivelly
1602 */
1603 hasLambdas = prevHasLambdas;
1604 hasPatterns = prevHasPatterns;
1605 }
1606 }
1607 envForSuperTypeFound = true;
1608 }
1609 st = types.supertype(st);
1610 }
1611 super.visitClassDef(node);
1612 }
1613 @Override
1614 public void visitLambda(JCLambda tree) {
1615 hasLambdas = true;
1616 super.visitLambda(tree);
1617 }
1618 @Override
1619 public void visitReference(JCMemberReference tree) {
1620 hasLambdas = true;
1621 super.visitReference(tree);
1622 }
1623 @Override
1624 public void visitBindingPattern(JCBindingPattern tree) {
1625 hasPatterns = true;
1626 super.visitBindingPattern(tree);
1627 }
1628 @Override
1629 public void visitTypeTest(JCInstanceOf tree) {
1630 if (tree.pattern.type.isPrimitive()) {
1631 hasPatterns = true;
1632 }
1633 super.visitTypeTest(tree);
1634 }
1635 @Override
1636 public void visitRecordPattern(JCRecordPattern that) {
1637 hasPatterns = true;
1638 super.visitRecordPattern(that);
1639 }
1640 @Override
1641 public void visitSwitch(JCSwitch tree) {
1642 hasPatterns |= tree.patternSwitch;
1643 super.visitSwitch(tree);
1644 }
1645 @Override
1646 public void visitSwitchExpression(JCSwitchExpression tree) {
1647 hasPatterns |= tree.patternSwitch;
1648 super.visitSwitchExpression(tree);
1649 }
1650 }
1651 ScanNested scanner = new ScanNested();
1652 scanner.scan(env.tree);
1653 for (Env<AttrContext> dep: scanner.dependencies) {
1654 if (!compileStates.isDone(dep, CompileState.WARN))
1655 desugaredEnvs.put(dep, desugar(warn(flow(attribute(dep)))));
1656 }
1657
1658 //We need to check for error another time as more classes might
1659 //have been attributed and analyzed at this stage
1660 if (shouldStop(CompileState.TRANSTYPES))
1661 return;
1662
1663 if (verboseCompilePolicy)
1664 printNote("[desugar " + env.enclClass.sym + "]");
1665
1666 JavaFileObject prev = log.useSource(env.enclClass.sym.sourcefile != null ?
1667 env.enclClass.sym.sourcefile :
1668 env.toplevel.sourcefile);
1669 try {
1670 //save tree prior to rewriting
1671 JCTree untranslated = env.tree;
1672
1673 make.at(Position.FIRSTPOS);
1674 TreeMaker localMake = make.forToplevel(env.toplevel);
1675
1676 if (env.tree.hasTag(JCTree.Tag.PACKAGEDEF) || env.tree.hasTag(JCTree.Tag.MODULEDEF)) {
1677 if (!(sourceOutput)) {
1678 if (shouldStop(CompileState.LOWER))
1679 return;
1680 List<JCTree> def = lower.translateTopLevelClass(env, env.tree, localMake);
1681 if (def.head != null) {
1682 Assert.check(def.tail.isEmpty());
1683 results.add(new Pair<>(env, (JCClassDecl)def.head));
1684 }
1685 }
1686 return;
1687 }
1688
1689 if (shouldStop(CompileState.TRANSTYPES))
1690 return;
1691
1692 if (Feature.REFLECT_METHODS.allowedInSource(source)) {
1693 Optional<CodeReflectionTransformer> reflectMethods = reflectMethods();
1694 if (reflectMethods.isPresent()) {
1695 env.tree = reflectMethods.get().translateTopLevelClass(context, env.tree, localMake);
1696 }
1697 }
1698
1699 env.tree = transTypes.translateTopLevelClass(env.tree, localMake);
1700 compileStates.put(env, CompileState.TRANSTYPES);
1701
1702 if (shouldStop(CompileState.TRANSPATTERNS))
1703 return;
1704
1705 if (scanner.hasPatterns) {
1706 env.tree = TransPatterns.instance(context).translateTopLevelClass(env, env.tree, localMake);
1707 }
1708
1709 compileStates.put(env, CompileState.TRANSPATTERNS);
1710
1711 if (shouldStop(CompileState.LOWER))
1712 return;
1713
1714 if (sourceOutput) {
1715 //emit standard Java source file, only for compilation
1716 //units enumerated explicitly on the command line
1717 JCClassDecl cdef = (JCClassDecl)env.tree;
1718 if (untranslated instanceof JCClassDecl classDecl &&
1719 rootClasses.contains(classDecl)) {
1720 results.add(new Pair<>(env, cdef));
1721 }
1722 return;
1723 }
1724
1725 //translate out inner classes
1726 List<JCTree> cdefs = lower.translateTopLevelClass(env, env.tree, localMake);
1727 compileStates.put(env, CompileState.LOWER);
1728
1729 if (shouldStop(CompileState.LOWER))
1730 return;
1731
1732 if (scanner.hasLambdas) {
1733 if (shouldStop(CompileState.UNLAMBDA))
1734 return;
1735
1736 for (JCTree def : cdefs) {
1737 LambdaToMethod.instance(context).translateTopLevelClass(env, def, localMake);
1738 }
1739 compileStates.put(env, CompileState.UNLAMBDA);
1740 }
1741
1742 //generate code for each class
1743 for (List<JCTree> l = cdefs; l.nonEmpty(); l = l.tail) {
1744 JCClassDecl cdef = (JCClassDecl)l.head;
1745 results.add(new Pair<>(env, cdef));
1746 }
1747 }
1748 finally {
1749 log.useSource(prev);
1750 }
1751
1752 }
1753
1754 Optional<CodeReflectionTransformer> reflectMethods() {
1755 return CodeReflectionSupport.CODE_LAYER != null ?
1756 ServiceLoader.load(CodeReflectionSupport.CODE_LAYER, CodeReflectionTransformer.class).findFirst() :
1757 Optional.empty();
1758 }
1759
1760 public static class CodeReflectionSupport {
1761 public static final ModuleLayer CODE_LAYER;
1762
1763 static {
1764 if (ModuleLayer.boot().findModule("jdk.incubator.code").isPresent()) {
1765 // we are in an exploded build, so just use the boot layer
1766 CODE_LAYER = ModuleLayer.boot();
1767 } else if (java.lang.module.ModuleFinder.ofSystem().find("jdk.incubator.code").isPresent()) {
1768 // the code module is installed, but not in the boot layer, create a new layer which contains it
1769 ModuleLayer parent = ModuleLayer.boot();
1770 Configuration cf = parent.configuration()
1771 .resolve(java.lang.module.ModuleFinder.of(), java.lang.module.ModuleFinder.ofSystem(), Set.of("jdk.incubator.code"));
1772 ClassLoader scl = ClassLoader.getSystemClassLoader();
1773 CODE_LAYER = parent.defineModulesWithOneLoader(cf, scl);
1774 Module codeReflectionModule = CODE_LAYER.findModule("jdk.incubator.code").get();
1775 Module jdkCompilerModule = JavaCompiler.class.getModule();
1776 // We need to add exports all jdk.compiler packages so that the plugin can use them
1777 for (String packageName : jdkCompilerModule.getPackages()) {
1778 jdkCompilerModule.addExports(packageName, codeReflectionModule);
1779 }
1780 // We also need to add exports all java.base packages so that the plugin can use them
1781 // But we need to do so by calling a method in java.base reflectively
1782 try {
1783 Class<?> codeModuleLayerInit = Class.forName("jdk.internal.access.code.CodeModuleLayerInit");
1784 Method initLayerMethod = codeModuleLayerInit.getDeclaredMethod("initCodeModuleLayer", ModuleLayer.class);
1785 initLayerMethod.invoke(null, CODE_LAYER);
1786 } catch (ReflectiveOperationException ex) {
1787 throw new AssertionError(ex);
1788 }
1789 } else {
1790 // if we run in bootstrap mode, there might be no jdk.incubator.code
1791 CODE_LAYER = null;
1792 }
1793 }
1794 }
1795
1796 /** Generates the source or class file for a list of classes.
1797 * The decision to generate a source file or a class file is
1798 * based upon the compiler's options.
1799 * Generation stops if an error occurs while writing files.
1800 */
1801 public void generate(Queue<Pair<Env<AttrContext>, JCClassDecl>> queue) {
1802 generate(queue, null);
1803 }
1804
1805 public void generate(Queue<Pair<Env<AttrContext>, JCClassDecl>> queue, Queue<JavaFileObject> results) {
1806 if (shouldStop(CompileState.GENERATE))
1807 return;
1808
1809 for (Pair<Env<AttrContext>, JCClassDecl> x: queue) {
1810 Env<AttrContext> env = x.fst;
1811 JCClassDecl cdef = x.snd;
1812
1813 if (verboseCompilePolicy) {
1814 printNote("[generate " + (sourceOutput ? " source" : "code") + " " + cdef.sym + "]");
1815 }
1816
1817 if (!taskListener.isEmpty()) {
1818 TaskEvent e = new TaskEvent(TaskEvent.Kind.GENERATE, env.toplevel, cdef.sym);
1819 taskListener.started(e);
1820 }
1821
1822 JavaFileObject prev = log.useSource(env.enclClass.sym.sourcefile != null ?
1823 env.enclClass.sym.sourcefile :
1824 env.toplevel.sourcefile);
1825 try {
1826 JavaFileObject file;
1827 if (sourceOutput) {
1828 file = printSource(env, cdef);
1829 } else {
1830 if (fileManager.hasLocation(StandardLocation.NATIVE_HEADER_OUTPUT)
1831 && jniWriter.needsHeader(cdef.sym)) {
1832 jniWriter.write(cdef.sym);
1833 }
1834 file = genCode(env, cdef);
1835 }
1836 if (results != null && file != null)
1837 results.add(file);
1838 } catch (IOException
1839 | UncheckedIOException
1840 | FileSystemNotFoundException
1841 | InvalidPathException
1842 | ReadOnlyFileSystemException ex) {
1843 log.error(cdef.pos(),
1844 Errors.ClassCantWrite(cdef.sym, ex.getMessage()));
1845 return;
1846 } finally {
1847 log.useSource(prev);
1848 }
1849
1850 if (!taskListener.isEmpty()) {
1851 TaskEvent e = new TaskEvent(TaskEvent.Kind.GENERATE, env.toplevel, cdef.sym);
1852 taskListener.finished(e);
1853 }
1854 }
1855 }
1856
1857 // where
1858 Map<JCCompilationUnit, Queue<Env<AttrContext>>> groupByFile(Queue<Env<AttrContext>> envs) {
1859 // use a LinkedHashMap to preserve the order of the original list as much as possible
1860 Map<JCCompilationUnit, Queue<Env<AttrContext>>> map = new LinkedHashMap<>();
1861 for (Env<AttrContext> env: envs) {
1862 Queue<Env<AttrContext>> sublist = map.get(env.toplevel);
1863 if (sublist == null) {
1864 sublist = new ListBuffer<>();
1865 map.put(env.toplevel, sublist);
1866 }
1867 sublist.add(env);
1868 }
1869 return map;
1870 }
1871
1872 JCClassDecl removeMethodBodies(JCClassDecl cdef) {
1873 final boolean isInterface = (cdef.mods.flags & Flags.INTERFACE) != 0;
1874 class MethodBodyRemover extends TreeTranslator {
1875 @Override
1876 public void visitMethodDef(JCMethodDecl tree) {
1877 tree.mods.flags &= ~Flags.SYNCHRONIZED;
1878 for (JCVariableDecl vd : tree.params)
1879 vd.mods.flags &= ~Flags.FINAL;
1880 tree.body = null;
1881 super.visitMethodDef(tree);
1882 }
1883 @Override
1884 public void visitVarDef(JCVariableDecl tree) {
1885 if (tree.init != null && tree.init.type.constValue() == null)
1886 tree.init = null;
1887 super.visitVarDef(tree);
1888 }
1889 @Override
1890 public void visitClassDef(JCClassDecl tree) {
1891 ListBuffer<JCTree> newdefs = new ListBuffer<>();
1892 for (List<JCTree> it = tree.defs; it.tail != null; it = it.tail) {
1893 JCTree t = it.head;
1894 switch (t.getTag()) {
1895 case CLASSDEF:
1896 if (isInterface ||
1897 (((JCClassDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1898 (((JCClassDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCClassDecl) t).sym.packge().getQualifiedName() == names.java_lang)
1899 newdefs.append(t);
1900 break;
1901 case METHODDEF:
1902 if (isInterface ||
1903 (((JCMethodDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1904 ((JCMethodDecl) t).sym.name == names.init ||
1905 (((JCMethodDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCMethodDecl) t).sym.packge().getQualifiedName() == names.java_lang)
1906 newdefs.append(t);
1907 break;
1908 case VARDEF:
1909 if (isInterface || (((JCVariableDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1910 (((JCVariableDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCVariableDecl) t).sym.packge().getQualifiedName() == names.java_lang)
1911 newdefs.append(t);
1912 break;
1913 default:
1914 break;
1915 }
1916 }
1917 tree.defs = newdefs.toList();
1918 super.visitClassDef(tree);
1919 }
1920 }
1921 MethodBodyRemover r = new MethodBodyRemover();
1922 return r.translate(cdef);
1923 }
1924
1925 public void reportDeferredDiagnostics() {
1926 if (errorCount() == 0
1927 && annotationProcessingOccurred
1928 && implicitSourceFilesRead
1929 && implicitSourcePolicy == ImplicitSourcePolicy.UNSET) {
1930 if (explicitAnnotationProcessingRequested())
1931 log.warning(Warnings.ProcUseImplicit);
1932 else
1933 log.warning(Warnings.ProcUseProcOrImplicit);
1934 }
1935 log.reportOutstandingWarnings();
1936 log.reportOutstandingNotes();
1937 if (log.compressedOutput) {
1938 log.note(Notes.CompressedDiags);
1939 }
1940 }
1941
1942 public void enterDone() {
1943 enterDone = true;
1944 annotate.enterDone();
1945 }
1946
1947 public boolean isEnterDone() {
1948 return enterDone;
1949 }
1950
1951 public boolean hasCodeReflectionModule() {
1952 return hasCodeReflectionModule;
1953 }
1954
1955 private Name readModuleName(JavaFileObject fo) {
1956 return parseAndGetName(fo, t -> {
1957 JCModuleDecl md = t.getModuleDecl();
1958
1959 return md != null ? TreeInfo.fullName(md.getName()) : null;
1960 });
1961 }
1962
1963 private Name findPackageInFile(JavaFileObject fo) {
1964 return parseAndGetName(fo, t -> t.getPackage() != null ?
1965 TreeInfo.fullName(t.getPackage().getPackageName()) : null);
1966 }
1967
1968 private Name parseAndGetName(JavaFileObject fo,
1969 Function<JCTree.JCCompilationUnit, Name> tree2Name) {
1970 DiagnosticHandler dh = log.new DiscardDiagnosticHandler();
1971 JavaFileObject prevSource = log.useSource(fo);
1972 try {
1973 JCTree.JCCompilationUnit t = parse(fo, fo.getCharContent(false), true);
1974 return tree2Name.apply(t);
1975 } catch (IOException e) {
1976 return null;
1977 } finally {
1978 log.popDiagnosticHandler(dh);
1979 log.useSource(prevSource);
1980 }
1981 }
1982
1983 public void reportDeferredDiagnosticAndClearHandler() {
1984 if (deferredDiagnosticHandler != null) {
1985 ToIntFunction<JCDiagnostic> diagValue =
1986 d -> d.isFlagSet(RECOVERABLE) ? 1 : 0;
1987 Comparator<JCDiagnostic> compareDiags =
1988 (d1, d2) -> diagValue.applyAsInt(d1) - diagValue.applyAsInt(d2);
1989 deferredDiagnosticHandler.reportDeferredDiagnostics(compareDiags);
1990 log.popDiagnosticHandler(deferredDiagnosticHandler);
1991 deferredDiagnosticHandler = null;
1992 }
1993 }
1994
1995 /** Close the compiler, flushing the logs
1996 */
1997 public void close() {
1998 rootClasses = null;
1999 finder = null;
2000 reader = null;
2001 make = null;
2002 writer = null;
2003 enter = null;
2004 if (todo != null)
2005 todo.clear();
2006 todo = null;
2007 parserFactory = null;
2008 syms = null;
2009 source = null;
2010 attr = null;
2011 chk = null;
2012 gen = null;
2013 lintMapper = null;
2014 flow = null;
2015 transTypes = null;
2016 lower = null;
2017 annotate = null;
2018 types = null;
2019
2020 log.flush();
2021 try {
2022 fileManager.flush();
2023 } catch (IOException e) {
2024 throw new Abort(e);
2025 } finally {
2026 if (names != null)
2027 names.dispose();
2028 names = null;
2029
2030 FatalError fatalError = null;
2031 for (Closeable c: closeables) {
2032 try {
2033 c.close();
2034 } catch (IOException e) {
2035 if (fatalError == null) {
2036 JCDiagnostic msg = diagFactory.fragment(Fragments.FatalErrCantClose);
2037 fatalError = new FatalError(msg, e);
2038 } else {
2039 fatalError.addSuppressed(e);
2040 }
2041 }
2042 }
2043 if (fatalError != null) {
2044 throw fatalError;
2045 }
2046 closeables = List.nil();
2047 }
2048 }
2049
2050 protected void printNote(String lines) {
2051 log.printRawLines(Log.WriterKind.NOTICE, lines);
2052 }
2053
2054 /** Print numbers of errors and warnings.
2055 */
2056 public void printCount(String kind, int count) {
2057 if (count != 0) {
2058 String key;
2059 if (count == 1)
2060 key = "count." + kind;
2061 else
2062 key = "count." + kind + ".plural";
2063 log.printLines(WriterKind.ERROR, key, String.valueOf(count));
2064 log.flush(Log.WriterKind.ERROR);
2065 }
2066 }
2067
2068 private void printSuppressedCount(int shown, int suppressed, String diagKey) {
2069 if (suppressed > 0) {
2070 int total = shown + suppressed;
2071 log.printLines(WriterKind.ERROR, diagKey,
2072 String.valueOf(shown), String.valueOf(total));
2073 log.flush(Log.WriterKind.ERROR);
2074 }
2075 }
2076
2077 private static long now() {
2078 return System.currentTimeMillis();
2079 }
2080
2081 private static long elapsed(long then) {
2082 return now() - then;
2083 }
2084
2085 public void newRound() {
2086 inputFiles.clear();
2087 todo.clear();
2088 }
2089
2090 public interface InitialFileParserIntf {
2091 public List<JCCompilationUnit> parse(Iterable<JavaFileObject> files);
2092 }
2093
2094 public static class InitialFileParser implements InitialFileParserIntf {
2095
2096 public static final Key<InitialFileParserIntf> initialParserKey = new Key<>();
2097
2098 public static InitialFileParserIntf instance(Context context) {
2099 InitialFileParserIntf instance = context.get(initialParserKey);
2100 if (instance == null)
2101 instance = new InitialFileParser(context);
2102 return instance;
2103 }
2104
2105 private final JavaCompiler compiler;
2106
2107 private InitialFileParser(Context context) {
2108 context.put(initialParserKey, this);
2109 this.compiler = JavaCompiler.instance(context);
2110 }
2111
2112 @Override
2113 public List<JCCompilationUnit> parse(Iterable<JavaFileObject> fileObjects) {
2114 return compiler.parseFiles(fileObjects, false);
2115 }
2116 }
2117 }