1 /*
2 * Copyright (c) 1999, 2011, 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.util.HashMap;
30 import java.util.HashSet;
31 import java.util.LinkedHashSet;
32 import java.util.LinkedHashMap;
33 import java.util.Map;
34 import java.util.MissingResourceException;
35 import java.util.Queue;
36 import java.util.ResourceBundle;
37 import java.util.Set;
38 import java.util.logging.Handler;
39 import java.util.logging.Level;
40 import java.util.logging.Logger;
41
42 import javax.annotation.processing.Processor;
43 import javax.lang.model.SourceVersion;
44 import javax.tools.JavaFileManager;
45 import javax.tools.JavaFileObject;
46 import javax.tools.DiagnosticListener;
47
48 import com.sun.source.util.TaskEvent;
49 import com.sun.source.util.TaskListener;
50
51 import com.sun.tools.javac.file.JavacFileManager;
52 import com.sun.tools.javac.util.*;
53 import com.sun.tools.javac.code.*;
54 import com.sun.tools.javac.code.Lint.LintCategory;
55 import com.sun.tools.javac.code.Symbol.*;
56 import com.sun.tools.javac.tree.*;
57 import com.sun.tools.javac.tree.JCTree.*;
58 import com.sun.tools.javac.parser.*;
59 import com.sun.tools.javac.comp.*;
60 import com.sun.tools.javac.jvm.*;
61 import com.sun.tools.javac.processing.*;
62
63 import static javax.tools.StandardLocation.CLASS_OUTPUT;
64 import static com.sun.tools.javac.main.OptionName.*;
65 import static com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag.*;
66 import static com.sun.tools.javac.util.ListBuffer.lb;
67
68
69 /** This class could be the main entry point for GJC when GJC is used as a
70 * component in a larger software system. It provides operations to
71 * construct a new compiler, and to run a new compiler on a set of source
72 * files.
73 *
74 * <p><b>This is NOT part of any supported API.
75 * If you write code that depends on this, you do so at your own risk.
76 * This code and its internal interfaces are subject to change or
77 * deletion without notice.</b>
78 */
79 public class JavaCompiler implements ClassReader.SourceCompleter {
80 /** The context key for the compiler. */
81 protected static final Context.Key<JavaCompiler> compilerKey =
82 new Context.Key<JavaCompiler>();
83
84 /** Get the JavaCompiler instance for this context. */
85 public static JavaCompiler instance(Context context) {
86 JavaCompiler instance = context.get(compilerKey);
87 if (instance == null)
88 instance = new JavaCompiler(context);
89 return instance;
90 }
91
92 /** The current version number as a string.
93 */
94 public static String version() {
95 return version("release"); // mm.nn.oo[-milestone]
96 }
97
98 /** The current full version number as a string.
99 */
100 public static String fullVersion() {
101 return version("full"); // mm.mm.oo[-milestone]-build
102 }
103
104 private static final String versionRBName = "com.sun.tools.javac.resources.version";
105 private static ResourceBundle versionRB;
106
107 private static String version(String key) {
108 if (versionRB == null) {
109 try {
110 versionRB = ResourceBundle.getBundle(versionRBName);
111 } catch (MissingResourceException e) {
112 return Log.getLocalizedString("version.not.available");
113 }
114 }
115 try {
116 return versionRB.getString(key);
117 }
118 catch (MissingResourceException e) {
119 return Log.getLocalizedString("version.not.available");
120 }
121 }
122
123 /**
124 * Control how the compiler's latter phases (attr, flow, desugar, generate)
125 * are connected. Each individual file is processed by each phase in turn,
126 * but with different compile policies, you can control the order in which
127 * each class is processed through its next phase.
128 *
129 * <p>Generally speaking, the compiler will "fail fast" in the face of
130 * errors, although not aggressively so. flow, desugar, etc become no-ops
131 * once any errors have occurred. No attempt is currently made to determine
132 * if it might be safe to process a class through its next phase because
133 * it does not depend on any unrelated errors that might have occurred.
134 */
135 protected static enum CompilePolicy {
136 /**
137 * Just attribute the parse trees.
138 */
139 ATTR_ONLY,
140
141 /**
142 * Just attribute and do flow analysis on the parse trees.
143 * This should catch most user errors.
144 */
145 CHECK_ONLY,
146
147 /**
148 * Attribute everything, then do flow analysis for everything,
149 * then desugar everything, and only then generate output.
150 * This means no output will be generated if there are any
151 * errors in any classes.
152 */
153 SIMPLE,
154
155 /**
156 * Groups the classes for each source file together, then process
157 * each group in a manner equivalent to the {@code SIMPLE} policy.
158 * This means no output will be generated if there are any
159 * errors in any of the classes in a source file.
160 */
161 BY_FILE,
162
163 /**
164 * Completely process each entry on the todo list in turn.
165 * -- this is the same for 1.5.
166 * Means output might be generated for some classes in a compilation unit
167 * and not others.
168 */
169 BY_TODO;
170
171 static CompilePolicy decode(String option) {
172 if (option == null)
173 return DEFAULT_COMPILE_POLICY;
174 else if (option.equals("attr"))
175 return ATTR_ONLY;
176 else if (option.equals("check"))
177 return CHECK_ONLY;
178 else if (option.equals("simple"))
179 return SIMPLE;
180 else if (option.equals("byfile"))
181 return BY_FILE;
182 else if (option.equals("bytodo"))
183 return BY_TODO;
184 else
185 return DEFAULT_COMPILE_POLICY;
186 }
187 }
188
189 private static CompilePolicy DEFAULT_COMPILE_POLICY = CompilePolicy.BY_TODO;
190
191 protected static enum ImplicitSourcePolicy {
192 /** Don't generate or process implicitly read source files. */
193 NONE,
194 /** Generate classes for implicitly read source files. */
195 CLASS,
196 /** Like CLASS, but generate warnings if annotation processing occurs */
197 UNSET;
198
199 static ImplicitSourcePolicy decode(String option) {
200 if (option == null)
201 return UNSET;
202 else if (option.equals("none"))
203 return NONE;
204 else if (option.equals("class"))
205 return CLASS;
206 else
207 return UNSET;
208 }
209 }
210
211 /** The log to be used for error reporting.
212 */
213 public Log log;
214
215 /** Factory for creating diagnostic objects
216 */
217 JCDiagnostic.Factory diagFactory;
218
219 /** The tree factory module.
220 */
221 protected TreeMaker make;
222
223 /** The class reader.
224 */
225 protected ClassReader reader;
226
227 /** The class writer.
228 */
229 protected ClassWriter writer;
230
231 /** The module for the symbol table entry phases.
232 */
233 protected Enter enter;
234
235 /** The symbol table.
236 */
237 protected Symtab syms;
238
239 /** The language version.
240 */
241 protected Source source;
242
243 /** The module for code generation.
244 */
245 protected Gen gen;
246
247 /** The name table.
248 */
249 protected Names names;
250
251 /** The attributor.
252 */
253 protected Attr attr;
254
255 /** The attributor.
256 */
257 protected Check chk;
258
259 /** The flow analyzer.
260 */
261 protected Flow flow;
262
263 /** The type eraser.
264 */
265 protected TransTypes transTypes;
266
267 /** The syntactic sugar desweetener.
268 */
269 protected Lower lower;
270
271 /** The annotation annotator.
272 */
273 protected Annotate annotate;
274
275 /** Force a completion failure on this name
276 */
277 protected final Name completionFailureName;
278
279 /** Type utilities.
280 */
281 protected Types types;
282
283 /** Access to file objects.
284 */
285 protected JavaFileManager fileManager;
286
287 /** Factory for parsers.
288 */
289 protected ParserFactory parserFactory;
290
291 /** Optional listener for progress events
292 */
293 protected TaskListener taskListener;
294
295 /**
296 * Annotation processing may require and provide a new instance
297 * of the compiler to be used for the analyze and generate phases.
298 */
299 protected JavaCompiler delegateCompiler;
300
301 /**
302 * Command line options.
303 */
304 protected Options options;
305
306 protected Context context;
307
308 /**
309 * Flag set if any annotation processing occurred.
310 **/
311 protected boolean annotationProcessingOccurred;
312
313 /**
314 * Flag set if any implicit source files read.
315 **/
316 protected boolean implicitSourceFilesRead;
317
318 /** Construct a new compiler using a shared context.
319 */
320 public JavaCompiler(Context context) {
321 this.context = context;
322 context.put(compilerKey, this);
323
324 // if fileManager not already set, register the JavacFileManager to be used
325 if (context.get(JavaFileManager.class) == null)
326 JavacFileManager.preRegister(context);
327
328 names = Names.instance(context);
329 log = Log.instance(context);
330 diagFactory = JCDiagnostic.Factory.instance(context);
331 reader = ClassReader.instance(context);
332 make = TreeMaker.instance(context);
333 writer = ClassWriter.instance(context);
334 enter = Enter.instance(context);
335 todo = Todo.instance(context);
336
337 fileManager = context.get(JavaFileManager.class);
338 parserFactory = ParserFactory.instance(context);
339
340 try {
341 // catch completion problems with predefineds
342 syms = Symtab.instance(context);
343 } catch (CompletionFailure ex) {
344 // inlined Check.completionError as it is not initialized yet
345 log.error("cant.access", ex.sym, ex.getDetailValue());
346 if (ex instanceof ClassReader.BadClassFile)
347 throw new Abort();
348 }
349 source = Source.instance(context);
350 attr = Attr.instance(context);
351 chk = Check.instance(context);
352 gen = Gen.instance(context);
353 flow = Flow.instance(context);
354 transTypes = TransTypes.instance(context);
355 lower = Lower.instance(context);
356 annotate = Annotate.instance(context);
357 types = Types.instance(context);
358 taskListener = context.get(TaskListener.class);
359
360 reader.sourceCompleter = this;
361
362 options = Options.instance(context);
363
364 verbose = options.isSet(VERBOSE);
365 sourceOutput = options.isSet(PRINTSOURCE); // used to be -s
366 stubOutput = options.isSet("-stubs");
367 relax = options.isSet("-relax");
368 printFlat = options.isSet("-printflat");
369 attrParseOnly = options.isSet("-attrparseonly");
370 encoding = options.get(ENCODING);
371 lineDebugInfo = options.isUnset(G_CUSTOM) ||
372 options.isSet(G_CUSTOM, "lines");
373 genEndPos = options.isSet(XJCOV) ||
374 context.get(DiagnosticListener.class) != null;
375 devVerbose = options.isSet("dev");
376 processPcks = options.isSet("process.packages");
377 werror = options.isSet(WERROR);
378
379 if (source.compareTo(Source.DEFAULT) < 0) {
380 if (options.isUnset(XLINT_CUSTOM, "-" + LintCategory.OPTIONS.option)) {
381 if (fileManager instanceof BaseFileManager) {
382 if (((BaseFileManager) fileManager).isDefaultBootClassPath())
383 log.warning(LintCategory.OPTIONS, "source.no.bootclasspath", source.name);
384 }
385 }
386 }
387
388 verboseCompilePolicy = options.isSet("verboseCompilePolicy");
389
390 if (attrParseOnly)
391 compilePolicy = CompilePolicy.ATTR_ONLY;
392 else
393 compilePolicy = CompilePolicy.decode(options.get("compilePolicy"));
394
395 implicitSourcePolicy = ImplicitSourcePolicy.decode(options.get("-implicit"));
396
397 completionFailureName =
398 options.isSet("failcomplete")
399 ? names.fromString(options.get("failcomplete"))
400 : null;
401
402 shouldStopPolicy =
403 options.isSet("shouldStopPolicy")
404 ? CompileState.valueOf(options.get("shouldStopPolicy"))
405 : null;
406 if (options.isUnset("oldDiags"))
407 log.setDiagnosticFormatter(RichDiagnosticFormatter.instance(context));
408 }
409
410 /* Switches:
411 */
412
413 /** Verbose output.
414 */
415 public boolean verbose;
416
417 /** Emit plain Java source files rather than class files.
418 */
419 public boolean sourceOutput;
420
421 /** Emit stub source files rather than class files.
422 */
423 public boolean stubOutput;
424
425 /** Generate attributed parse tree only.
426 */
427 public boolean attrParseOnly;
428
429 /** Switch: relax some constraints for producing the jsr14 prototype.
430 */
431 boolean relax;
432
433 /** Debug switch: Emit Java sources after inner class flattening.
434 */
435 public boolean printFlat;
436
437 /** The encoding to be used for source input.
438 */
439 public String encoding;
440
441 /** Generate code with the LineNumberTable attribute for debugging
442 */
443 public boolean lineDebugInfo;
444
445 /** Switch: should we store the ending positions?
446 */
447 public boolean genEndPos;
448
449 /** Switch: should we debug ignored exceptions
450 */
451 protected boolean devVerbose;
452
453 /** Switch: should we (annotation) process packages as well
454 */
455 protected boolean processPcks;
456
457 /** Switch: treat warnings as errors
458 */
459 protected boolean werror;
460
461 /** Switch: is annotation processing requested explitly via
462 * CompilationTask.setProcessors?
463 */
464 protected boolean explicitAnnotationProcessingRequested = false;
465
466 /**
467 * The policy for the order in which to perform the compilation
468 */
469 protected CompilePolicy compilePolicy;
470
471 /**
472 * The policy for what to do with implicitly read source files
473 */
474 protected ImplicitSourcePolicy implicitSourcePolicy;
475
476 /**
477 * Report activity related to compilePolicy
478 */
479 public boolean verboseCompilePolicy;
480
481 /**
482 * Policy of how far to continue processing. null means until first
483 * error.
484 */
485 public CompileState shouldStopPolicy;
486
487 /** A queue of all as yet unattributed classes.
488 */
489 public Todo todo;
490
491 /** A list of items to be closed when the compilation is complete.
492 */
493 public List<Closeable> closeables = List.nil();
494
495 /** Ordered list of compiler phases for each compilation unit. */
496 public enum CompileState {
497 PARSE(1),
498 ENTER(2),
499 PROCESS(3),
500 ATTR(4),
501 FLOW(5),
502 TRANSTYPES(6),
503 LOWER(7),
504 GENERATE(8);
505 CompileState(int value) {
506 this.value = value;
507 }
508 boolean isDone(CompileState other) {
509 return value >= other.value;
510 }
511 private int value;
512 };
513 /** Partial map to record which compiler phases have been executed
514 * for each compilation unit. Used for ATTR and FLOW phases.
515 */
516 protected class CompileStates extends HashMap<Env<AttrContext>,CompileState> {
517 private static final long serialVersionUID = 1812267524140424433L;
518 boolean isDone(Env<AttrContext> env, CompileState cs) {
519 CompileState ecs = get(env);
520 return ecs != null && ecs.isDone(cs);
521 }
522 }
523 private CompileStates compileStates = new CompileStates();
524
525 /** The set of currently compiled inputfiles, needed to ensure
526 * we don't accidentally overwrite an input file when -s is set.
527 * initialized by `compile'.
528 */
529 protected Set<JavaFileObject> inputFiles = new HashSet<JavaFileObject>();
530
531 protected boolean shouldStop(CompileState cs) {
532 if (shouldStopPolicy == null)
533 return (errorCount() > 0 || unrecoverableError());
534 else
535 return cs.ordinal() > shouldStopPolicy.ordinal();
536 }
537
538 /** The number of errors reported so far.
539 */
540 public int errorCount() {
541 if (delegateCompiler != null && delegateCompiler != this)
542 return delegateCompiler.errorCount();
543 else {
544 if (werror && log.nerrors == 0 && log.nwarnings > 0) {
545 log.error("warnings.and.werror");
546 }
547 }
548 return log.nerrors;
549 }
550
551 protected final <T> Queue<T> stopIfError(CompileState cs, Queue<T> queue) {
552 return shouldStop(cs) ? ListBuffer.<T>lb() : queue;
553 }
554
555 protected final <T> List<T> stopIfError(CompileState cs, List<T> list) {
556 return shouldStop(cs) ? List.<T>nil() : list;
557 }
558
559 /** The number of warnings reported so far.
560 */
561 public int warningCount() {
562 if (delegateCompiler != null && delegateCompiler != this)
563 return delegateCompiler.warningCount();
564 else
565 return log.nwarnings;
566 }
567
568 /** Try to open input stream with given name.
569 * Report an error if this fails.
570 * @param filename The file name of the input stream to be opened.
571 */
572 public CharSequence readSource(JavaFileObject filename) {
573 try {
574 inputFiles.add(filename);
575 return filename.getCharContent(false);
576 } catch (IOException e) {
577 log.error("error.reading.file", filename, JavacFileManager.getMessage(e));
578 return null;
579 }
580 }
581
582 /** Parse contents of input stream.
583 * @param filename The name of the file from which input stream comes.
584 * @param input The input stream to be parsed.
585 */
586 protected JCCompilationUnit parse(JavaFileObject filename, CharSequence content) {
587 long msec = now();
588 JCCompilationUnit tree = make.TopLevel(List.<JCTree.JCAnnotation>nil(),
589 null, List.<JCTree>nil());
590 if (content != null) {
591 if (verbose) {
592 log.printVerbose("parsing.started", filename);
593 }
594 if (taskListener != null) {
595 TaskEvent e = new TaskEvent(TaskEvent.Kind.PARSE, filename);
596 taskListener.started(e);
597 }
598 Parser parser = parserFactory.newParser(content, keepComments(), genEndPos, lineDebugInfo);
599 tree = parser.parseCompilationUnit();
600 if (verbose) {
601 log.printVerbose("parsing.done", Long.toString(elapsed(msec)));
602 }
603 }
604
605 tree.sourcefile = filename;
606
607 if (content != null && taskListener != null) {
608 TaskEvent e = new TaskEvent(TaskEvent.Kind.PARSE, tree);
609 taskListener.finished(e);
610 }
611
612 return tree;
613 }
614 // where
615 public boolean keepComments = false;
616 protected boolean keepComments() {
617 return keepComments || sourceOutput || stubOutput;
618 }
619
620
621 /** Parse contents of file.
622 * @param filename The name of the file to be parsed.
623 */
624 @Deprecated
625 public JCTree.JCCompilationUnit parse(String filename) {
626 JavacFileManager fm = (JavacFileManager)fileManager;
627 return parse(fm.getJavaFileObjectsFromStrings(List.of(filename)).iterator().next());
628 }
629
630 /** Parse contents of file.
631 * @param filename The name of the file to be parsed.
632 */
633 public JCTree.JCCompilationUnit parse(JavaFileObject filename) {
634 JavaFileObject prev = log.useSource(filename);
635 try {
636 JCTree.JCCompilationUnit t = parse(filename, readSource(filename));
637 if (t.endPositions != null)
638 log.setEndPosTable(filename, t.endPositions);
639 return t;
640 } finally {
641 log.useSource(prev);
642 }
643 }
644
645 /** Resolve an identifier which may be the binary name of a class or
646 * the Java name of a class or package.
647 * @param name The name to resolve
648 */
649 public Symbol resolveBinaryNameOrIdent(String name) {
650 try {
651 Name flatname = names.fromString(name.replace("/", "."));
652 return reader.loadClass(flatname);
653 } catch (CompletionFailure ignore) {
654 return resolveIdent(name);
655 }
656 }
657
658 /** Resolve an identifier.
659 * @param name The identifier to resolve
660 */
661 public Symbol resolveIdent(String name) {
662 if (name.equals(""))
663 return syms.errSymbol;
664 JavaFileObject prev = log.useSource(null);
665 try {
666 JCExpression tree = null;
667 for (String s : name.split("\\.", -1)) {
668 if (!SourceVersion.isIdentifier(s)) // TODO: check for keywords
669 return syms.errSymbol;
670 tree = (tree == null) ? make.Ident(names.fromString(s))
671 : make.Select(tree, names.fromString(s));
672 }
673 JCCompilationUnit toplevel =
674 make.TopLevel(List.<JCTree.JCAnnotation>nil(), null, List.<JCTree>nil());
675 toplevel.packge = syms.unnamedPackage;
676 return attr.attribIdent(tree, toplevel);
677 } finally {
678 log.useSource(prev);
679 }
680 }
681
682 /** Emit plain Java source for a class.
683 * @param env The attribution environment of the outermost class
684 * containing this class.
685 * @param cdef The class definition to be printed.
686 */
687 JavaFileObject printSource(Env<AttrContext> env, JCClassDecl cdef) throws IOException {
688 JavaFileObject outFile
689 = fileManager.getJavaFileForOutput(CLASS_OUTPUT,
690 cdef.sym.flatname.toString(),
691 JavaFileObject.Kind.SOURCE,
692 null);
693 if (inputFiles.contains(outFile)) {
694 log.error(cdef.pos(), "source.cant.overwrite.input.file", outFile);
695 return null;
696 } else {
697 BufferedWriter out = new BufferedWriter(outFile.openWriter());
698 try {
699 new Pretty(out, true).printUnit(env.toplevel, cdef);
700 if (verbose)
701 log.printVerbose("wrote.file", outFile);
702 } finally {
703 out.close();
704 }
705 return outFile;
706 }
707 }
708
709 /** Generate code and emit a class file for a given class
710 * @param env The attribution environment of the outermost class
711 * containing this class.
712 * @param cdef The class definition from which code is generated.
713 */
714 JavaFileObject genCode(Env<AttrContext> env, JCClassDecl cdef) throws IOException {
715 try {
716 if (gen.genClass(env, cdef) && (errorCount() == 0))
717 return writer.writeClass(cdef.sym);
718 } catch (ClassWriter.PoolOverflow ex) {
719 log.error(cdef.pos(), "limit.pool");
720 } catch (ClassWriter.StringOverflow ex) {
721 log.error(cdef.pos(), "limit.string.overflow",
722 ex.value.substring(0, 20));
723 } catch (CompletionFailure ex) {
724 chk.completionError(cdef.pos(), ex);
725 }
726 return null;
727 }
728
729 /** Complete compiling a source file that has been accessed
730 * by the class file reader.
731 * @param c The class the source file of which needs to be compiled.
732 * @param filename The name of the source file.
733 * @param f An input stream that reads the source file.
734 */
735 public void complete(ClassSymbol c) throws CompletionFailure {
736 // System.err.println("completing " + c);//DEBUG
737 if (completionFailureName == c.fullname) {
738 throw new CompletionFailure(c, "user-selected completion failure by class name");
739 }
740 JCCompilationUnit tree;
741 JavaFileObject filename = c.classfile;
742 JavaFileObject prev = log.useSource(filename);
743
744 try {
745 tree = parse(filename, filename.getCharContent(false));
746 } catch (IOException e) {
747 log.error("error.reading.file", filename, JavacFileManager.getMessage(e));
748 tree = make.TopLevel(List.<JCTree.JCAnnotation>nil(), null, List.<JCTree>nil());
749 } finally {
750 log.useSource(prev);
751 }
752
753 if (taskListener != null) {
754 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, tree);
755 taskListener.started(e);
756 }
757
758 enter.complete(List.of(tree), c);
759
760 if (taskListener != null) {
761 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, tree);
762 taskListener.finished(e);
763 }
764
765 if (enter.getEnv(c) == null) {
766 boolean isPkgInfo =
767 tree.sourcefile.isNameCompatible("package-info",
768 JavaFileObject.Kind.SOURCE);
769 if (isPkgInfo) {
770 if (enter.getEnv(tree.packge) == null) {
771 JCDiagnostic diag =
772 diagFactory.fragment("file.does.not.contain.package",
773 c.location());
774 throw reader.new BadClassFile(c, filename, diag);
775 }
776 } else {
777 JCDiagnostic diag =
778 diagFactory.fragment("file.doesnt.contain.class",
779 c.getQualifiedName());
780 throw reader.new BadClassFile(c, filename, diag);
781 }
782 }
783
784 implicitSourceFilesRead = true;
785 }
786
787 /** Track when the JavaCompiler has been used to compile something. */
788 private boolean hasBeenUsed = false;
789 private long start_msec = 0;
790 public long elapsed_msec = 0;
791
792 public void compile(List<JavaFileObject> sourceFileObject)
793 throws Throwable {
794 compile(sourceFileObject, List.<String>nil(), null);
795 }
796
797 /**
798 * Main method: compile a list of files, return all compiled classes
799 *
800 * @param sourceFileObjects file objects to be compiled
801 * @param classnames class names to process for annotations
802 * @param processors user provided annotation processors to bypass
803 * discovery, {@code null} means that no processors were provided
804 */
805 public void compile(List<JavaFileObject> sourceFileObjects,
806 List<String> classnames,
807 Iterable<? extends Processor> processors)
808 {
809 if (processors != null && processors.iterator().hasNext())
810 explicitAnnotationProcessingRequested = true;
811 // as a JavaCompiler can only be used once, throw an exception if
812 // it has been used before.
813 if (hasBeenUsed)
814 throw new AssertionError("attempt to reuse JavaCompiler");
815 hasBeenUsed = true;
816
817 // forcibly set the equivalent of -Xlint:-options, so that no further
818 // warnings about command line options are generated from this point on
819 options.put(XLINT_CUSTOM + "-" + LintCategory.OPTIONS.option, "true");
820 options.remove(XLINT_CUSTOM + LintCategory.OPTIONS.option);
821
822 start_msec = now();
823
824 try {
825 initProcessAnnotations(processors);
826
827 // These method calls must be chained to avoid memory leaks
828 delegateCompiler =
829 processAnnotations(
830 enterTrees(stopIfError(CompileState.PARSE, parseFiles(sourceFileObjects))),
831 classnames);
832
833 delegateCompiler.compile2();
834 delegateCompiler.close();
835 elapsed_msec = delegateCompiler.elapsed_msec;
836 } catch (Abort ex) {
837 if (devVerbose)
838 ex.printStackTrace(System.err);
839 } finally {
840 if (procEnvImpl != null)
841 procEnvImpl.close();
842 }
843 }
844
845 /**
846 * The phases following annotation processing: attribution,
847 * desugar, and finally code generation.
848 */
849 private void compile2() {
850 try {
851 switch (compilePolicy) {
852 case ATTR_ONLY:
853 attribute(todo);
854 break;
855
856 case CHECK_ONLY:
857 flow(attribute(todo));
858 break;
859
860 case SIMPLE:
861 generate(desugar(flow(attribute(todo))));
862 break;
863
864 case BY_FILE: {
865 Queue<Queue<Env<AttrContext>>> q = todo.groupByFile();
866 while (!q.isEmpty() && !shouldStop(CompileState.ATTR)) {
867 generate(desugar(flow(attribute(q.remove()))));
868 }
869 }
870 break;
871
872 case BY_TODO:
873 while (!todo.isEmpty())
874 generate(desugar(flow(attribute(todo.remove()))));
875 break;
876
877 default:
878 Assert.error("unknown compile policy");
879 }
880 } catch (Abort ex) {
881 if (devVerbose)
882 ex.printStackTrace(System.err);
883 }
884
885 if (verbose) {
886 elapsed_msec = elapsed(start_msec);
887 log.printVerbose("total", Long.toString(elapsed_msec));
888 }
889
890 reportDeferredDiagnostics();
891
892 if (!log.hasDiagnosticListener()) {
893 printCount("error", errorCount());
894 printCount("warn", warningCount());
895 }
896 }
897
898 private List<JCClassDecl> rootClasses;
899
900 /**
901 * Parses a list of files.
902 */
903 public List<JCCompilationUnit> parseFiles(Iterable<JavaFileObject> fileObjects) {
904 if (shouldStop(CompileState.PARSE))
905 return List.nil();
906
907 //parse all files
908 ListBuffer<JCCompilationUnit> trees = lb();
909 Set<JavaFileObject> filesSoFar = new HashSet<JavaFileObject>();
910 for (JavaFileObject fileObject : fileObjects) {
911 if (!filesSoFar.contains(fileObject)) {
912 filesSoFar.add(fileObject);
913 trees.append(parse(fileObject));
914 }
915 }
916 return trees.toList();
917 }
918
919 /**
920 * Enter the symbols found in a list of parse trees.
921 * As a side-effect, this puts elements on the "todo" list.
922 * Also stores a list of all top level classes in rootClasses.
923 */
924 public List<JCCompilationUnit> enterTrees(List<JCCompilationUnit> roots) {
925 //enter symbols for all files
926 if (taskListener != null) {
927 for (JCCompilationUnit unit: roots) {
928 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, unit);
929 taskListener.started(e);
930 }
931 }
932
933 enter.main(roots);
934
935 if (taskListener != null) {
936 for (JCCompilationUnit unit: roots) {
937 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, unit);
938 taskListener.finished(e);
939 }
940 }
941
942 //If generating source, remember the classes declared in
943 //the original compilation units listed on the command line.
944 if (sourceOutput || stubOutput) {
945 ListBuffer<JCClassDecl> cdefs = lb();
946 for (JCCompilationUnit unit : roots) {
947 for (List<JCTree> defs = unit.defs;
948 defs.nonEmpty();
949 defs = defs.tail) {
950 if (defs.head instanceof JCClassDecl)
951 cdefs.append((JCClassDecl)defs.head);
952 }
953 }
954 rootClasses = cdefs.toList();
955 }
956
957 // Ensure the input files have been recorded. Although this is normally
958 // done by readSource, it may not have been done if the trees were read
959 // in a prior round of annotation processing, and the trees have been
960 // cleaned and are being reused.
961 for (JCCompilationUnit unit : roots) {
962 inputFiles.add(unit.sourcefile);
963 }
964
965 return roots;
966 }
967
968 /**
969 * Set to true to enable skeleton annotation processing code.
970 * Currently, we assume this variable will be replaced more
971 * advanced logic to figure out if annotation processing is
972 * needed.
973 */
974 boolean processAnnotations = false;
975
976 /**
977 * Object to handle annotation processing.
978 */
979 private JavacProcessingEnvironment procEnvImpl = null;
980
981 /**
982 * Check if we should process annotations.
983 * If so, and if no scanner is yet registered, then set up the DocCommentScanner
984 * to catch doc comments, and set keepComments so the parser records them in
985 * the compilation unit.
986 *
987 * @param processors user provided annotation processors to bypass
988 * discovery, {@code null} means that no processors were provided
989 */
990 public void initProcessAnnotations(Iterable<? extends Processor> processors) {
991 // Process annotations if processing is not disabled and there
992 // is at least one Processor available.
993 if (options.isSet(PROC, "none")) {
994 processAnnotations = false;
995 } else if (procEnvImpl == null) {
996 procEnvImpl = new JavacProcessingEnvironment(context, processors);
997 processAnnotations = procEnvImpl.atLeastOneProcessor();
998
999 if (processAnnotations) {
1000 options.put("save-parameter-names", "save-parameter-names");
1001 reader.saveParameterNames = true;
1002 keepComments = true;
1003 genEndPos = true;
1004 if (taskListener != null)
1005 taskListener.started(new TaskEvent(TaskEvent.Kind.ANNOTATION_PROCESSING));
1006 log.deferDiagnostics = true;
1007 } else { // free resources
1008 procEnvImpl.close();
1009 }
1010 }
1011 }
1012
1013 // TODO: called by JavacTaskImpl
1014 public JavaCompiler processAnnotations(List<JCCompilationUnit> roots) {
1015 return processAnnotations(roots, List.<String>nil());
1016 }
1017
1018 /**
1019 * Process any anotations found in the specifed compilation units.
1020 * @param roots a list of compilation units
1021 * @return an instance of the compiler in which to complete the compilation
1022 */
1023 // Implementation note: when this method is called, log.deferredDiagnostics
1024 // will have been set true by initProcessAnnotations, meaning that any diagnostics
1025 // that are reported will go into the log.deferredDiagnostics queue.
1026 // By the time this method exits, log.deferDiagnostics must be set back to false,
1027 // and all deferredDiagnostics must have been handled: i.e. either reported
1028 // or determined to be transient, and therefore suppressed.
1029 public JavaCompiler processAnnotations(List<JCCompilationUnit> roots,
1030 List<String> classnames) {
1031 if (shouldStop(CompileState.PROCESS)) {
1032 // Errors were encountered.
1033 // Unless all the errors are resolve errors, the errors were parse errors
1034 // or other errors during enter which cannot be fixed by running
1035 // any annotation processors.
1036 if (unrecoverableError()) {
1037 log.reportDeferredDiagnostics();
1038 return this;
1039 }
1040 }
1041
1042 // ASSERT: processAnnotations and procEnvImpl should have been set up by
1043 // by initProcessAnnotations
1044
1045 // NOTE: The !classnames.isEmpty() checks should be refactored to Main.
1046
1047 if (!processAnnotations) {
1048 // If there are no annotation processors present, and
1049 // annotation processing is to occur with compilation,
1050 // emit a warning.
1051 if (options.isSet(PROC, "only")) {
1052 log.warning("proc.proc-only.requested.no.procs");
1053 todo.clear();
1054 }
1055 // If not processing annotations, classnames must be empty
1056 if (!classnames.isEmpty()) {
1057 log.error("proc.no.explicit.annotation.processing.requested",
1058 classnames);
1059 }
1060 log.reportDeferredDiagnostics();
1061 return this; // continue regular compilation
1062 }
1063
1064 try {
1065 List<ClassSymbol> classSymbols = List.nil();
1066 List<PackageSymbol> pckSymbols = List.nil();
1067 if (!classnames.isEmpty()) {
1068 // Check for explicit request for annotation
1069 // processing
1070 if (!explicitAnnotationProcessingRequested()) {
1071 log.error("proc.no.explicit.annotation.processing.requested",
1072 classnames);
1073 log.reportDeferredDiagnostics();
1074 return this; // TODO: Will this halt compilation?
1075 } else {
1076 boolean errors = false;
1077 for (String nameStr : classnames) {
1078 Symbol sym = resolveBinaryNameOrIdent(nameStr);
1079 if (sym == null || (sym.kind == Kinds.PCK && !processPcks)) {
1080 log.error("proc.cant.find.class", nameStr);
1081 errors = true;
1082 continue;
1083 }
1084 try {
1085 if (sym.kind == Kinds.PCK)
1086 sym.complete();
1087 if (sym.exists()) {
1088 if (sym.kind == Kinds.PCK)
1089 pckSymbols = pckSymbols.prepend((PackageSymbol)sym);
1090 else
1091 classSymbols = classSymbols.prepend((ClassSymbol)sym);
1092 continue;
1093 }
1094 Assert.check(sym.kind == Kinds.PCK);
1095 log.warning("proc.package.does.not.exist", nameStr);
1096 pckSymbols = pckSymbols.prepend((PackageSymbol)sym);
1097 } catch (CompletionFailure e) {
1098 log.error("proc.cant.find.class", nameStr);
1099 errors = true;
1100 continue;
1101 }
1102 }
1103 if (errors) {
1104 log.reportDeferredDiagnostics();
1105 return this;
1106 }
1107 }
1108 }
1109 try {
1110 JavaCompiler c = procEnvImpl.doProcessing(context, roots, classSymbols, pckSymbols);
1111 if (c != this)
1112 annotationProcessingOccurred = c.annotationProcessingOccurred = true;
1113 // doProcessing will have handled deferred diagnostics
1114 Assert.check(c.log.deferDiagnostics == false
1115 && c.log.deferredDiagnostics.size() == 0);
1116 return c;
1117 } finally {
1118 procEnvImpl.close();
1119 }
1120 } catch (CompletionFailure ex) {
1121 log.error("cant.access", ex.sym, ex.getDetailValue());
1122 log.reportDeferredDiagnostics();
1123 return this;
1124 }
1125 }
1126
1127 private boolean unrecoverableError() {
1128 for (JCDiagnostic d: log.deferredDiagnostics) {
1129 if (d.getKind() == JCDiagnostic.Kind.ERROR && !d.isFlagSet(RECOVERABLE))
1130 return true;
1131 }
1132 return false;
1133 }
1134
1135 boolean explicitAnnotationProcessingRequested() {
1136 return
1137 explicitAnnotationProcessingRequested ||
1138 explicitAnnotationProcessingRequested(options);
1139 }
1140
1141 static boolean explicitAnnotationProcessingRequested(Options options) {
1142 return
1143 options.isSet(PROCESSOR) ||
1144 options.isSet(PROCESSORPATH) ||
1145 options.isSet(PROC, "only") ||
1146 options.isSet(XPRINT);
1147 }
1148
1149 /**
1150 * Attribute a list of parse trees, such as found on the "todo" list.
1151 * Note that attributing classes may cause additional files to be
1152 * parsed and entered via the SourceCompleter.
1153 * Attribution of the entries in the list does not stop if any errors occur.
1154 * @returns a list of environments for attributd classes.
1155 */
1156 public Queue<Env<AttrContext>> attribute(Queue<Env<AttrContext>> envs) {
1157 ListBuffer<Env<AttrContext>> results = lb();
1158 while (!envs.isEmpty())
1159 results.append(attribute(envs.remove()));
1160 return stopIfError(CompileState.ATTR, results);
1161 }
1162
1163 /**
1164 * Attribute a parse tree.
1165 * @returns the attributed parse tree
1166 */
1167 public Env<AttrContext> attribute(Env<AttrContext> env) {
1168 if (compileStates.isDone(env, CompileState.ATTR))
1169 return env;
1170
1171 if (verboseCompilePolicy)
1172 printNote("[attribute " + env.enclClass.sym + "]");
1173 if (verbose)
1174 log.printVerbose("checking.attribution", env.enclClass.sym);
1175
1176 if (taskListener != null) {
1177 TaskEvent e = new TaskEvent(TaskEvent.Kind.ANALYZE, env.toplevel, env.enclClass.sym);
1178 taskListener.started(e);
1179 }
1180
1181 JavaFileObject prev = log.useSource(
1182 env.enclClass.sym.sourcefile != null ?
1183 env.enclClass.sym.sourcefile :
1184 env.toplevel.sourcefile);
1185 try {
1186 attr.attrib(env);
1187 if (errorCount() > 0 && !shouldStop(CompileState.ATTR)) {
1188 //if in fail-over mode, ensure that AST expression nodes
1189 //are correctly initialized (e.g. they have a type/symbol)
1190 attr.postAttr(env);
1191 }
1192 compileStates.put(env, CompileState.ATTR);
1193 }
1194 finally {
1195 log.useSource(prev);
1196 }
1197
1198 return env;
1199 }
1200
1201 /**
1202 * Perform dataflow checks on attributed parse trees.
1203 * These include checks for definite assignment and unreachable statements.
1204 * If any errors occur, an empty list will be returned.
1205 * @returns the list of attributed parse trees
1206 */
1207 public Queue<Env<AttrContext>> flow(Queue<Env<AttrContext>> envs) {
1208 ListBuffer<Env<AttrContext>> results = lb();
1209 for (Env<AttrContext> env: envs) {
1210 flow(env, results);
1211 }
1212 return stopIfError(CompileState.FLOW, results);
1213 }
1214
1215 /**
1216 * Perform dataflow checks on an attributed parse tree.
1217 */
1218 public Queue<Env<AttrContext>> flow(Env<AttrContext> env) {
1219 ListBuffer<Env<AttrContext>> results = lb();
1220 flow(env, results);
1221 return stopIfError(CompileState.FLOW, results);
1222 }
1223
1224 /**
1225 * Perform dataflow checks on an attributed parse tree.
1226 */
1227 protected void flow(Env<AttrContext> env, Queue<Env<AttrContext>> results) {
1228 try {
1229 if (shouldStop(CompileState.FLOW))
1230 return;
1231
1232 if (relax || compileStates.isDone(env, CompileState.FLOW)) {
1233 results.add(env);
1234 return;
1235 }
1236
1237 if (verboseCompilePolicy)
1238 printNote("[flow " + env.enclClass.sym + "]");
1239 JavaFileObject prev = log.useSource(
1240 env.enclClass.sym.sourcefile != null ?
1241 env.enclClass.sym.sourcefile :
1242 env.toplevel.sourcefile);
1243 try {
1244 make.at(Position.FIRSTPOS);
1245 TreeMaker localMake = make.forToplevel(env.toplevel);
1246 flow.analyzeTree(env, localMake);
1247 compileStates.put(env, CompileState.FLOW);
1248
1249 if (shouldStop(CompileState.FLOW))
1250 return;
1251
1252 results.add(env);
1253 }
1254 finally {
1255 log.useSource(prev);
1256 }
1257 }
1258 finally {
1259 if (taskListener != null) {
1260 TaskEvent e = new TaskEvent(TaskEvent.Kind.ANALYZE, env.toplevel, env.enclClass.sym);
1261 taskListener.finished(e);
1262 }
1263 }
1264 }
1265
1266 /**
1267 * Prepare attributed parse trees, in conjunction with their attribution contexts,
1268 * for source or code generation.
1269 * If any errors occur, an empty list will be returned.
1270 * @returns a list containing the classes to be generated
1271 */
1272 public Queue<Pair<Env<AttrContext>, JCClassDecl>> desugar(Queue<Env<AttrContext>> envs) {
1273 ListBuffer<Pair<Env<AttrContext>, JCClassDecl>> results = lb();
1274 for (Env<AttrContext> env: envs)
1275 desugar(env, results);
1276 return stopIfError(CompileState.FLOW, results);
1277 }
1278
1279 HashMap<Env<AttrContext>, Queue<Pair<Env<AttrContext>, JCClassDecl>>> desugaredEnvs =
1280 new HashMap<Env<AttrContext>, Queue<Pair<Env<AttrContext>, JCClassDecl>>>();
1281
1282 /**
1283 * Prepare attributed parse trees, in conjunction with their attribution contexts,
1284 * for source or code generation. If the file was not listed on the command line,
1285 * the current implicitSourcePolicy is taken into account.
1286 * The preparation stops as soon as an error is found.
1287 */
1288 protected void desugar(final Env<AttrContext> env, Queue<Pair<Env<AttrContext>, JCClassDecl>> results) {
1289 if (shouldStop(CompileState.TRANSTYPES))
1290 return;
1291
1292 if (implicitSourcePolicy == ImplicitSourcePolicy.NONE
1293 && !inputFiles.contains(env.toplevel.sourcefile)) {
1294 return;
1295 }
1296
1297 if (compileStates.isDone(env, CompileState.LOWER)) {
1298 results.addAll(desugaredEnvs.get(env));
1299 return;
1300 }
1301
1302 /**
1303 * Ensure that superclasses of C are desugared before C itself. This is
1304 * required for two reasons: (i) as erasure (TransTypes) destroys
1305 * information needed in flow analysis and (ii) as some checks carried
1306 * out during lowering require that all synthetic fields/methods have
1307 * already been added to C and its superclasses.
1308 */
1309 class ScanNested extends TreeScanner {
1310 Set<Env<AttrContext>> dependencies = new LinkedHashSet<Env<AttrContext>>();
1311 @Override
1312 public void visitClassDef(JCClassDecl node) {
1313 Type st = types.supertype(node.sym.type);
1314 if (st.tag == TypeTags.CLASS) {
1315 ClassSymbol c = st.tsym.outermostClass();
1316 Env<AttrContext> stEnv = enter.getEnv(c);
1317 if (stEnv != null && env != stEnv) {
1318 if (dependencies.add(stEnv))
1319 scan(stEnv.tree);
1320 }
1321 }
1322 super.visitClassDef(node);
1323 }
1324 }
1325 ScanNested scanner = new ScanNested();
1326 scanner.scan(env.tree);
1327 for (Env<AttrContext> dep: scanner.dependencies) {
1328 if (!compileStates.isDone(dep, CompileState.FLOW))
1329 desugaredEnvs.put(dep, desugar(flow(attribute(dep))));
1330 }
1331
1332 //We need to check for error another time as more classes might
1333 //have been attributed and analyzed at this stage
1334 if (shouldStop(CompileState.TRANSTYPES))
1335 return;
1336
1337 if (verboseCompilePolicy)
1338 printNote("[desugar " + env.enclClass.sym + "]");
1339
1340 JavaFileObject prev = log.useSource(env.enclClass.sym.sourcefile != null ?
1341 env.enclClass.sym.sourcefile :
1342 env.toplevel.sourcefile);
1343 try {
1344 //save tree prior to rewriting
1345 JCTree untranslated = env.tree;
1346
1347 make.at(Position.FIRSTPOS);
1348 TreeMaker localMake = make.forToplevel(env.toplevel);
1349
1350 if (env.tree instanceof JCCompilationUnit) {
1351 if (!(stubOutput || sourceOutput || printFlat)) {
1352 if (shouldStop(CompileState.LOWER))
1353 return;
1354 List<JCTree> pdef = lower.translateTopLevelClass(env, env.tree, localMake);
1355 if (pdef.head != null) {
1356 Assert.check(pdef.tail.isEmpty());
1357 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, (JCClassDecl)pdef.head));
1358 }
1359 }
1360 return;
1361 }
1362
1363 if (stubOutput) {
1364 //emit stub Java source file, only for compilation
1365 //units enumerated explicitly on the command line
1366 JCClassDecl cdef = (JCClassDecl)env.tree;
1367 if (untranslated instanceof JCClassDecl &&
1368 rootClasses.contains((JCClassDecl)untranslated) &&
1369 ((cdef.mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1370 cdef.sym.packge().getQualifiedName() == names.java_lang)) {
1371 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, removeMethodBodies(cdef)));
1372 }
1373 return;
1374 }
1375
1376 if (shouldStop(CompileState.TRANSTYPES))
1377 return;
1378
1379 env.tree = transTypes.translateTopLevelClass(env.tree, localMake);
1380 compileStates.put(env, CompileState.TRANSTYPES);
1381
1382 if (shouldStop(CompileState.LOWER))
1383 return;
1384
1385 if (sourceOutput) {
1386 //emit standard Java source file, only for compilation
1387 //units enumerated explicitly on the command line
1388 JCClassDecl cdef = (JCClassDecl)env.tree;
1389 if (untranslated instanceof JCClassDecl &&
1390 rootClasses.contains((JCClassDecl)untranslated)) {
1391 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, cdef));
1392 }
1393 return;
1394 }
1395
1396 //translate out inner classes
1397 List<JCTree> cdefs = lower.translateTopLevelClass(env, env.tree, localMake);
1398 compileStates.put(env, CompileState.LOWER);
1399
1400 if (shouldStop(CompileState.LOWER))
1401 return;
1402
1403 //generate code for each class
1404 for (List<JCTree> l = cdefs; l.nonEmpty(); l = l.tail) {
1405 JCClassDecl cdef = (JCClassDecl)l.head;
1406 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, cdef));
1407 }
1408 }
1409 finally {
1410 log.useSource(prev);
1411 }
1412
1413 }
1414
1415 /** Generates the source or class file for a list of classes.
1416 * The decision to generate a source file or a class file is
1417 * based upon the compiler's options.
1418 * Generation stops if an error occurs while writing files.
1419 */
1420 public void generate(Queue<Pair<Env<AttrContext>, JCClassDecl>> queue) {
1421 generate(queue, null);
1422 }
1423
1424 public void generate(Queue<Pair<Env<AttrContext>, JCClassDecl>> queue, Queue<JavaFileObject> results) {
1425 if (shouldStop(CompileState.GENERATE))
1426 return;
1427
1428 boolean usePrintSource = (stubOutput || sourceOutput || printFlat);
1429
1430 for (Pair<Env<AttrContext>, JCClassDecl> x: queue) {
1431 Env<AttrContext> env = x.fst;
1432 JCClassDecl cdef = x.snd;
1433
1434 if (verboseCompilePolicy) {
1435 printNote("[generate "
1436 + (usePrintSource ? " source" : "code")
1437 + " " + cdef.sym + "]");
1438 }
1439
1440 if (taskListener != null) {
1441 TaskEvent e = new TaskEvent(TaskEvent.Kind.GENERATE, env.toplevel, cdef.sym);
1442 taskListener.started(e);
1443 }
1444
1445 JavaFileObject prev = log.useSource(env.enclClass.sym.sourcefile != null ?
1446 env.enclClass.sym.sourcefile :
1447 env.toplevel.sourcefile);
1448 try {
1449 JavaFileObject file;
1450 if (usePrintSource)
1451 file = printSource(env, cdef);
1452 else
1453 file = genCode(env, cdef);
1454 if (results != null && file != null)
1455 results.add(file);
1456 } catch (IOException ex) {
1457 log.error(cdef.pos(), "class.cant.write",
1458 cdef.sym, ex.getMessage());
1459 return;
1460 } finally {
1461 log.useSource(prev);
1462 }
1463
1464 if (taskListener != null) {
1465 TaskEvent e = new TaskEvent(TaskEvent.Kind.GENERATE, env.toplevel, cdef.sym);
1466 taskListener.finished(e);
1467 }
1468 }
1469 }
1470
1471 // where
1472 Map<JCCompilationUnit, Queue<Env<AttrContext>>> groupByFile(Queue<Env<AttrContext>> envs) {
1473 // use a LinkedHashMap to preserve the order of the original list as much as possible
1474 Map<JCCompilationUnit, Queue<Env<AttrContext>>> map = new LinkedHashMap<JCCompilationUnit, Queue<Env<AttrContext>>>();
1475 for (Env<AttrContext> env: envs) {
1476 Queue<Env<AttrContext>> sublist = map.get(env.toplevel);
1477 if (sublist == null) {
1478 sublist = new ListBuffer<Env<AttrContext>>();
1479 map.put(env.toplevel, sublist);
1480 }
1481 sublist.add(env);
1482 }
1483 return map;
1484 }
1485
1486 JCClassDecl removeMethodBodies(JCClassDecl cdef) {
1487 final boolean isInterface = (cdef.mods.flags & Flags.INTERFACE) != 0;
1488 class MethodBodyRemover extends TreeTranslator {
1489 @Override
1490 public void visitMethodDef(JCMethodDecl tree) {
1491 tree.mods.flags &= ~Flags.SYNCHRONIZED;
1492 for (JCVariableDecl vd : tree.params)
1493 vd.mods.flags &= ~Flags.FINAL;
1494 tree.body = null;
1495 super.visitMethodDef(tree);
1496 }
1497 @Override
1498 public void visitVarDef(JCVariableDecl tree) {
1499 if (tree.init != null && tree.init.type.constValue() == null)
1500 tree.init = null;
1501 super.visitVarDef(tree);
1502 }
1503 @Override
1504 public void visitClassDef(JCClassDecl tree) {
1505 ListBuffer<JCTree> newdefs = lb();
1506 for (List<JCTree> it = tree.defs; it.tail != null; it = it.tail) {
1507 JCTree t = it.head;
1508 switch (t.getTag()) {
1509 case JCTree.CLASSDEF:
1510 if (isInterface ||
1511 (((JCClassDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1512 (((JCClassDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCClassDecl) t).sym.packge().getQualifiedName() == names.java_lang)
1513 newdefs.append(t);
1514 break;
1515 case JCTree.METHODDEF:
1516 if (isInterface ||
1517 (((JCMethodDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1518 ((JCMethodDecl) t).sym.name == names.init ||
1519 (((JCMethodDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCMethodDecl) t).sym.packge().getQualifiedName() == names.java_lang)
1520 newdefs.append(t);
1521 break;
1522 case JCTree.VARDEF:
1523 if (isInterface || (((JCVariableDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1524 (((JCVariableDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCVariableDecl) t).sym.packge().getQualifiedName() == names.java_lang)
1525 newdefs.append(t);
1526 break;
1527 default:
1528 break;
1529 }
1530 }
1531 tree.defs = newdefs.toList();
1532 super.visitClassDef(tree);
1533 }
1534 }
1535 MethodBodyRemover r = new MethodBodyRemover();
1536 return r.translate(cdef);
1537 }
1538
1539 public void reportDeferredDiagnostics() {
1540 if (errorCount() == 0
1541 && annotationProcessingOccurred
1542 && implicitSourceFilesRead
1543 && implicitSourcePolicy == ImplicitSourcePolicy.UNSET) {
1544 if (explicitAnnotationProcessingRequested())
1545 log.warning("proc.use.implicit");
1546 else
1547 log.warning("proc.use.proc.or.implicit");
1548 }
1549 chk.reportDeferredDiagnostics();
1550 }
1551
1552 /** Close the compiler, flushing the logs
1553 */
1554 public void close() {
1555 close(true);
1556 }
1557
1558 public void close(boolean disposeNames) {
1559 rootClasses = null;
1560 reader = null;
1561 make = null;
1562 writer = null;
1563 enter = null;
1564 if (todo != null)
1565 todo.clear();
1566 todo = null;
1567 parserFactory = null;
1568 syms = null;
1569 source = null;
1570 attr = null;
1571 chk = null;
1572 gen = null;
1573 flow = null;
1574 transTypes = null;
1575 lower = null;
1576 annotate = null;
1577 types = null;
1578
1579 log.flush();
1580 try {
1581 fileManager.flush();
1582 } catch (IOException e) {
1583 throw new Abort(e);
1584 } finally {
1585 if (names != null && disposeNames)
1586 names.dispose();
1587 names = null;
1588
1589 for (Closeable c: closeables) {
1590 try {
1591 c.close();
1592 } catch (IOException e) {
1593 // When javac uses JDK 7 as a baseline, this code would be
1594 // better written to set any/all exceptions from all the
1595 // Closeables as suppressed exceptions on the FatalError
1596 // that is thrown.
1597 JCDiagnostic msg = diagFactory.fragment("fatal.err.cant.close");
1598 throw new FatalError(msg, e);
1599 }
1600 }
1601 }
1602 }
1603
1604 protected void printNote(String lines) {
1605 Log.printLines(log.noticeWriter, lines);
1606 }
1607
1608 /** Print numbers of errors and warnings.
1609 */
1610 protected void printCount(String kind, int count) {
1611 if (count != 0) {
1612 String key;
1613 if (count == 1)
1614 key = "count." + kind;
1615 else
1616 key = "count." + kind + ".plural";
1617 log.printErrLines(key, String.valueOf(count));
1618 log.errWriter.flush();
1619 }
1620 }
1621
1622 private static long now() {
1623 return System.currentTimeMillis();
1624 }
1625
1626 private static long elapsed(long then) {
1627 return now() - then;
1628 }
1629
1630 public void initRound(JavaCompiler prev) {
1631 genEndPos = prev.genEndPos;
1632 keepComments = prev.keepComments;
1633 start_msec = prev.start_msec;
1634 hasBeenUsed = true;
1635 closeables = prev.closeables;
1636 prev.closeables = List.nil();
1637 }
1638
1639 public static void enableLogging() {
1640 Logger logger = Logger.getLogger(com.sun.tools.javac.Main.class.getPackage().getName());
1641 logger.setLevel(Level.ALL);
1642 for (Handler h : logger.getParent().getHandlers()) {
1643 h.setLevel(Level.ALL);
1644 }
1645
1646 }
1647 }