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