Fri, 25 Feb 2011 12:09:33 -0800
7021650: fix Context issues
Reviewed-by: mcimadamore
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 */
26 package com.sun.tools.javac.main;
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;
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;
48 import com.sun.source.util.TaskEvent;
49 import com.sun.source.util.TaskListener;
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.*;
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;
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>();
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 }
92 /** The current version number as a string.
93 */
94 public static String version() {
95 return version("release"); // mm.nn.oo[-milestone]
96 }
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 }
104 private static final String versionRBName = "com.sun.tools.javac.resources.version";
105 private static ResourceBundle versionRB;
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 }
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,
141 /**
142 * Just attribute and do flow analysis on the parse trees.
143 * This should catch most user errors.
144 */
145 CHECK_ONLY,
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,
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,
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;
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 }
189 private static CompilePolicy DEFAULT_COMPILE_POLICY = CompilePolicy.BY_TODO;
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;
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 }
211 /** The log to be used for error reporting.
212 */
213 public Log log;
215 /** Factory for creating diagnostic objects
216 */
217 JCDiagnostic.Factory diagFactory;
219 /** The tree factory module.
220 */
221 protected TreeMaker make;
223 /** The class reader.
224 */
225 protected ClassReader reader;
227 /** The class writer.
228 */
229 protected ClassWriter writer;
231 /** The module for the symbol table entry phases.
232 */
233 protected Enter enter;
235 /** The symbol table.
236 */
237 protected Symtab syms;
239 /** The language version.
240 */
241 protected Source source;
243 /** The module for code generation.
244 */
245 protected Gen gen;
247 /** The name table.
248 */
249 protected Names names;
251 /** The attributor.
252 */
253 protected Attr attr;
255 /** The attributor.
256 */
257 protected Check chk;
259 /** The flow analyzer.
260 */
261 protected Flow flow;
263 /** The type eraser.
264 */
265 protected TransTypes transTypes;
267 /** The syntactic sugar desweetener.
268 */
269 protected Lower lower;
271 /** The annotation annotator.
272 */
273 protected Annotate annotate;
275 /** Force a completion failure on this name
276 */
277 protected final Name completionFailureName;
279 /** Type utilities.
280 */
281 protected Types types;
283 /** Access to file objects.
284 */
285 protected JavaFileManager fileManager;
287 /** Factory for parsers.
288 */
289 protected ParserFactory parserFactory;
291 /** Optional listener for progress events
292 */
293 protected TaskListener taskListener;
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;
301 /**
302 * Flag set if any annotation processing occurred.
303 **/
304 protected boolean annotationProcessingOccurred;
306 /**
307 * Flag set if any implicit source files read.
308 **/
309 protected boolean implicitSourceFilesRead;
311 protected Context context;
313 /** Construct a new compiler using a shared context.
314 */
315 public JavaCompiler(Context context) {
316 this.context = context;
317 context.put(compilerKey, this);
319 // if fileManager not already set, register the JavacFileManager to be used
320 if (context.get(JavaFileManager.class) == null)
321 JavacFileManager.preRegister(context);
323 names = Names.instance(context);
324 log = Log.instance(context);
325 diagFactory = JCDiagnostic.Factory.instance(context);
326 reader = ClassReader.instance(context);
327 make = TreeMaker.instance(context);
328 writer = ClassWriter.instance(context);
329 enter = Enter.instance(context);
330 todo = Todo.instance(context);
332 fileManager = context.get(JavaFileManager.class);
333 parserFactory = ParserFactory.instance(context);
335 try {
336 // catch completion problems with predefineds
337 syms = Symtab.instance(context);
338 } catch (CompletionFailure ex) {
339 // inlined Check.completionError as it is not initialized yet
340 log.error("cant.access", ex.sym, ex.getDetailValue());
341 if (ex instanceof ClassReader.BadClassFile)
342 throw new Abort();
343 }
344 source = Source.instance(context);
345 attr = Attr.instance(context);
346 chk = Check.instance(context);
347 gen = Gen.instance(context);
348 flow = Flow.instance(context);
349 transTypes = TransTypes.instance(context);
350 lower = Lower.instance(context);
351 annotate = Annotate.instance(context);
352 types = Types.instance(context);
353 taskListener = context.get(TaskListener.class);
355 reader.sourceCompleter = this;
357 Options options = Options.instance(context);
359 verbose = options.isSet(VERBOSE);
360 sourceOutput = options.isSet(PRINTSOURCE); // used to be -s
361 stubOutput = options.isSet("-stubs");
362 relax = options.isSet("-relax");
363 printFlat = options.isSet("-printflat");
364 attrParseOnly = options.isSet("-attrparseonly");
365 encoding = options.get(ENCODING);
366 lineDebugInfo = options.isUnset(G_CUSTOM) ||
367 options.isSet(G_CUSTOM, "lines");
368 genEndPos = options.isSet(XJCOV) ||
369 context.get(DiagnosticListener.class) != null;
370 devVerbose = options.isSet("dev");
371 processPcks = options.isSet("process.packages");
372 werror = options.isSet(WERROR);
374 if (source.compareTo(Source.DEFAULT) < 0) {
375 if (options.isUnset(XLINT_CUSTOM, "-" + LintCategory.OPTIONS.option)) {
376 if (fileManager instanceof BaseFileManager) {
377 if (((BaseFileManager) fileManager).isDefaultBootClassPath())
378 log.warning(LintCategory.OPTIONS, "source.no.bootclasspath", source.name);
379 }
380 }
381 }
383 verboseCompilePolicy = options.isSet("verboseCompilePolicy");
385 if (attrParseOnly)
386 compilePolicy = CompilePolicy.ATTR_ONLY;
387 else
388 compilePolicy = CompilePolicy.decode(options.get("compilePolicy"));
390 implicitSourcePolicy = ImplicitSourcePolicy.decode(options.get("-implicit"));
392 completionFailureName =
393 options.isSet("failcomplete")
394 ? names.fromString(options.get("failcomplete"))
395 : null;
397 shouldStopPolicy =
398 options.isSet("shouldStopPolicy")
399 ? CompileState.valueOf(options.get("shouldStopPolicy"))
400 : null;
401 if (options.isUnset("oldDiags"))
402 log.setDiagnosticFormatter(RichDiagnosticFormatter.instance(context));
403 }
405 /* Switches:
406 */
408 /** Verbose output.
409 */
410 public boolean verbose;
412 /** Emit plain Java source files rather than class files.
413 */
414 public boolean sourceOutput;
416 /** Emit stub source files rather than class files.
417 */
418 public boolean stubOutput;
420 /** Generate attributed parse tree only.
421 */
422 public boolean attrParseOnly;
424 /** Switch: relax some constraints for producing the jsr14 prototype.
425 */
426 boolean relax;
428 /** Debug switch: Emit Java sources after inner class flattening.
429 */
430 public boolean printFlat;
432 /** The encoding to be used for source input.
433 */
434 public String encoding;
436 /** Generate code with the LineNumberTable attribute for debugging
437 */
438 public boolean lineDebugInfo;
440 /** Switch: should we store the ending positions?
441 */
442 public boolean genEndPos;
444 /** Switch: should we debug ignored exceptions
445 */
446 protected boolean devVerbose;
448 /** Switch: should we (annotation) process packages as well
449 */
450 protected boolean processPcks;
452 /** Switch: treat warnings as errors
453 */
454 protected boolean werror;
456 /** Switch: is annotation processing requested explitly via
457 * CompilationTask.setProcessors?
458 */
459 protected boolean explicitAnnotationProcessingRequested = false;
461 /**
462 * The policy for the order in which to perform the compilation
463 */
464 protected CompilePolicy compilePolicy;
466 /**
467 * The policy for what to do with implicitly read source files
468 */
469 protected ImplicitSourcePolicy implicitSourcePolicy;
471 /**
472 * Report activity related to compilePolicy
473 */
474 public boolean verboseCompilePolicy;
476 /**
477 * Policy of how far to continue processing. null means until first
478 * error.
479 */
480 public CompileState shouldStopPolicy;
482 /** A queue of all as yet unattributed classes.
483 */
484 public Todo todo;
486 /** Ordered list of compiler phases for each compilation unit. */
487 public enum CompileState {
488 PARSE(1),
489 ENTER(2),
490 PROCESS(3),
491 ATTR(4),
492 FLOW(5),
493 TRANSTYPES(6),
494 LOWER(7),
495 GENERATE(8);
496 CompileState(int value) {
497 this.value = value;
498 }
499 boolean isDone(CompileState other) {
500 return value >= other.value;
501 }
502 private int value;
503 };
504 /** Partial map to record which compiler phases have been executed
505 * for each compilation unit. Used for ATTR and FLOW phases.
506 */
507 protected class CompileStates extends HashMap<Env<AttrContext>,CompileState> {
508 private static final long serialVersionUID = 1812267524140424433L;
509 boolean isDone(Env<AttrContext> env, CompileState cs) {
510 CompileState ecs = get(env);
511 return ecs != null && ecs.isDone(cs);
512 }
513 }
514 private CompileStates compileStates = new CompileStates();
516 /** The set of currently compiled inputfiles, needed to ensure
517 * we don't accidentally overwrite an input file when -s is set.
518 * initialized by `compile'.
519 */
520 protected Set<JavaFileObject> inputFiles = new HashSet<JavaFileObject>();
522 protected boolean shouldStop(CompileState cs) {
523 if (shouldStopPolicy == null)
524 return (errorCount() > 0 || unrecoverableError());
525 else
526 return cs.ordinal() > shouldStopPolicy.ordinal();
527 }
529 /** The number of errors reported so far.
530 */
531 public int errorCount() {
532 if (delegateCompiler != null && delegateCompiler != this)
533 return delegateCompiler.errorCount();
534 else {
535 if (werror && log.nerrors == 0 && log.nwarnings > 0) {
536 log.error("warnings.and.werror");
537 }
538 }
539 return log.nerrors;
540 }
542 protected final <T> Queue<T> stopIfError(CompileState cs, Queue<T> queue) {
543 return shouldStop(cs) ? ListBuffer.<T>lb() : queue;
544 }
546 protected final <T> List<T> stopIfError(CompileState cs, List<T> list) {
547 return shouldStop(cs) ? List.<T>nil() : list;
548 }
550 /** The number of warnings reported so far.
551 */
552 public int warningCount() {
553 if (delegateCompiler != null && delegateCompiler != this)
554 return delegateCompiler.warningCount();
555 else
556 return log.nwarnings;
557 }
559 /** Try to open input stream with given name.
560 * Report an error if this fails.
561 * @param filename The file name of the input stream to be opened.
562 */
563 public CharSequence readSource(JavaFileObject filename) {
564 try {
565 inputFiles.add(filename);
566 return filename.getCharContent(false);
567 } catch (IOException e) {
568 log.error("error.reading.file", filename, JavacFileManager.getMessage(e));
569 return null;
570 }
571 }
573 /** Parse contents of input stream.
574 * @param filename The name of the file from which input stream comes.
575 * @param input The input stream to be parsed.
576 */
577 protected JCCompilationUnit parse(JavaFileObject filename, CharSequence content) {
578 long msec = now();
579 JCCompilationUnit tree = make.TopLevel(List.<JCTree.JCAnnotation>nil(),
580 null, List.<JCTree>nil());
581 if (content != null) {
582 if (verbose) {
583 printVerbose("parsing.started", filename);
584 }
585 if (taskListener != null) {
586 TaskEvent e = new TaskEvent(TaskEvent.Kind.PARSE, filename);
587 taskListener.started(e);
588 }
589 Parser parser = parserFactory.newParser(content, keepComments(), genEndPos, lineDebugInfo);
590 tree = parser.parseCompilationUnit();
591 if (verbose) {
592 printVerbose("parsing.done", Long.toString(elapsed(msec)));
593 }
594 }
596 tree.sourcefile = filename;
598 if (content != null && taskListener != null) {
599 TaskEvent e = new TaskEvent(TaskEvent.Kind.PARSE, tree);
600 taskListener.finished(e);
601 }
603 return tree;
604 }
605 // where
606 public boolean keepComments = false;
607 protected boolean keepComments() {
608 return keepComments || sourceOutput || stubOutput;
609 }
612 /** Parse contents of file.
613 * @param filename The name of the file to be parsed.
614 */
615 @Deprecated
616 public JCTree.JCCompilationUnit parse(String filename) {
617 JavacFileManager fm = (JavacFileManager)fileManager;
618 return parse(fm.getJavaFileObjectsFromStrings(List.of(filename)).iterator().next());
619 }
621 /** Parse contents of file.
622 * @param filename The name of the file to be parsed.
623 */
624 public JCTree.JCCompilationUnit parse(JavaFileObject filename) {
625 JavaFileObject prev = log.useSource(filename);
626 try {
627 JCTree.JCCompilationUnit t = parse(filename, readSource(filename));
628 if (t.endPositions != null)
629 log.setEndPosTable(filename, t.endPositions);
630 return t;
631 } finally {
632 log.useSource(prev);
633 }
634 }
636 /** Resolve an identifier.
637 * @param name The identifier to resolve
638 */
639 public Symbol resolveIdent(String name) {
640 if (name.equals(""))
641 return syms.errSymbol;
642 JavaFileObject prev = log.useSource(null);
643 try {
644 JCExpression tree = null;
645 for (String s : name.split("\\.", -1)) {
646 if (!SourceVersion.isIdentifier(s)) // TODO: check for keywords
647 return syms.errSymbol;
648 tree = (tree == null) ? make.Ident(names.fromString(s))
649 : make.Select(tree, names.fromString(s));
650 }
651 JCCompilationUnit toplevel =
652 make.TopLevel(List.<JCTree.JCAnnotation>nil(), null, List.<JCTree>nil());
653 toplevel.packge = syms.unnamedPackage;
654 return attr.attribIdent(tree, toplevel);
655 } finally {
656 log.useSource(prev);
657 }
658 }
660 /** Emit plain Java source for a class.
661 * @param env The attribution environment of the outermost class
662 * containing this class.
663 * @param cdef The class definition to be printed.
664 */
665 JavaFileObject printSource(Env<AttrContext> env, JCClassDecl cdef) throws IOException {
666 JavaFileObject outFile
667 = fileManager.getJavaFileForOutput(CLASS_OUTPUT,
668 cdef.sym.flatname.toString(),
669 JavaFileObject.Kind.SOURCE,
670 null);
671 if (inputFiles.contains(outFile)) {
672 log.error(cdef.pos(), "source.cant.overwrite.input.file", outFile);
673 return null;
674 } else {
675 BufferedWriter out = new BufferedWriter(outFile.openWriter());
676 try {
677 new Pretty(out, true).printUnit(env.toplevel, cdef);
678 if (verbose)
679 printVerbose("wrote.file", outFile);
680 } finally {
681 out.close();
682 }
683 return outFile;
684 }
685 }
687 /** Generate code and emit a class file for a given class
688 * @param env The attribution environment of the outermost class
689 * containing this class.
690 * @param cdef The class definition from which code is generated.
691 */
692 JavaFileObject genCode(Env<AttrContext> env, JCClassDecl cdef) throws IOException {
693 try {
694 if (gen.genClass(env, cdef) && (errorCount() == 0))
695 return writer.writeClass(cdef.sym);
696 } catch (ClassWriter.PoolOverflow ex) {
697 log.error(cdef.pos(), "limit.pool");
698 } catch (ClassWriter.StringOverflow ex) {
699 log.error(cdef.pos(), "limit.string.overflow",
700 ex.value.substring(0, 20));
701 } catch (CompletionFailure ex) {
702 chk.completionError(cdef.pos(), ex);
703 }
704 return null;
705 }
707 /** Complete compiling a source file that has been accessed
708 * by the class file reader.
709 * @param c The class the source file of which needs to be compiled.
710 * @param filename The name of the source file.
711 * @param f An input stream that reads the source file.
712 */
713 public void complete(ClassSymbol c) throws CompletionFailure {
714 // System.err.println("completing " + c);//DEBUG
715 if (completionFailureName == c.fullname) {
716 throw new CompletionFailure(c, "user-selected completion failure by class name");
717 }
718 JCCompilationUnit tree;
719 JavaFileObject filename = c.classfile;
720 JavaFileObject prev = log.useSource(filename);
722 try {
723 tree = parse(filename, filename.getCharContent(false));
724 } catch (IOException e) {
725 log.error("error.reading.file", filename, JavacFileManager.getMessage(e));
726 tree = make.TopLevel(List.<JCTree.JCAnnotation>nil(), null, List.<JCTree>nil());
727 } finally {
728 log.useSource(prev);
729 }
731 if (taskListener != null) {
732 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, tree);
733 taskListener.started(e);
734 }
736 enter.complete(List.of(tree), c);
738 if (taskListener != null) {
739 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, tree);
740 taskListener.finished(e);
741 }
743 if (enter.getEnv(c) == null) {
744 boolean isPkgInfo =
745 tree.sourcefile.isNameCompatible("package-info",
746 JavaFileObject.Kind.SOURCE);
747 if (isPkgInfo) {
748 if (enter.getEnv(tree.packge) == null) {
749 JCDiagnostic diag =
750 diagFactory.fragment("file.does.not.contain.package",
751 c.location());
752 throw reader.new BadClassFile(c, filename, diag);
753 }
754 } else {
755 JCDiagnostic diag =
756 diagFactory.fragment("file.doesnt.contain.class",
757 c.getQualifiedName());
758 throw reader.new BadClassFile(c, filename, diag);
759 }
760 }
762 implicitSourceFilesRead = true;
763 }
765 /** Track when the JavaCompiler has been used to compile something. */
766 private boolean hasBeenUsed = false;
767 private long start_msec = 0;
768 public long elapsed_msec = 0;
770 public void compile(List<JavaFileObject> sourceFileObject)
771 throws Throwable {
772 compile(sourceFileObject, List.<String>nil(), null);
773 }
775 /**
776 * Main method: compile a list of files, return all compiled classes
777 *
778 * @param sourceFileObjects file objects to be compiled
779 * @param classnames class names to process for annotations
780 * @param processors user provided annotation processors to bypass
781 * discovery, {@code null} means that no processors were provided
782 */
783 public void compile(List<JavaFileObject> sourceFileObjects,
784 List<String> classnames,
785 Iterable<? extends Processor> processors)
786 {
787 if (processors != null && processors.iterator().hasNext())
788 explicitAnnotationProcessingRequested = true;
789 // as a JavaCompiler can only be used once, throw an exception if
790 // it has been used before.
791 if (hasBeenUsed)
792 throw new AssertionError("attempt to reuse JavaCompiler");
793 hasBeenUsed = true;
795 start_msec = now();
797 try {
798 initProcessAnnotations(processors);
800 // These method calls must be chained to avoid memory leaks
801 delegateCompiler =
802 processAnnotations(
803 enterTrees(stopIfError(CompileState.PARSE, parseFiles(sourceFileObjects))),
804 classnames);
806 delegateCompiler.compile2();
807 delegateCompiler.close();
808 elapsed_msec = delegateCompiler.elapsed_msec;
809 } catch (Abort ex) {
810 if (devVerbose)
811 ex.printStackTrace(System.err);
812 } finally {
813 if (procEnvImpl != null)
814 procEnvImpl.close();
815 }
816 }
818 /**
819 * The phases following annotation processing: attribution,
820 * desugar, and finally code generation.
821 */
822 private void compile2() {
823 try {
824 switch (compilePolicy) {
825 case ATTR_ONLY:
826 attribute(todo);
827 break;
829 case CHECK_ONLY:
830 flow(attribute(todo));
831 break;
833 case SIMPLE:
834 generate(desugar(flow(attribute(todo))));
835 break;
837 case BY_FILE: {
838 Queue<Queue<Env<AttrContext>>> q = todo.groupByFile();
839 while (!q.isEmpty() && !shouldStop(CompileState.ATTR)) {
840 generate(desugar(flow(attribute(q.remove()))));
841 }
842 }
843 break;
845 case BY_TODO:
846 while (!todo.isEmpty())
847 generate(desugar(flow(attribute(todo.remove()))));
848 break;
850 default:
851 Assert.error("unknown compile policy");
852 }
853 } catch (Abort ex) {
854 if (devVerbose)
855 ex.printStackTrace(System.err);
856 }
858 if (verbose) {
859 elapsed_msec = elapsed(start_msec);
860 printVerbose("total", Long.toString(elapsed_msec));
861 }
863 reportDeferredDiagnostics();
865 if (!log.hasDiagnosticListener()) {
866 printCount("error", errorCount());
867 printCount("warn", warningCount());
868 }
869 }
871 private List<JCClassDecl> rootClasses;
873 /**
874 * Parses a list of files.
875 */
876 public List<JCCompilationUnit> parseFiles(Iterable<JavaFileObject> fileObjects) {
877 if (shouldStop(CompileState.PARSE))
878 return List.nil();
880 //parse all files
881 ListBuffer<JCCompilationUnit> trees = lb();
882 Set<JavaFileObject> filesSoFar = new HashSet<JavaFileObject>();
883 for (JavaFileObject fileObject : fileObjects) {
884 if (!filesSoFar.contains(fileObject)) {
885 filesSoFar.add(fileObject);
886 trees.append(parse(fileObject));
887 }
888 }
889 return trees.toList();
890 }
892 /**
893 * Enter the symbols found in a list of parse trees.
894 * As a side-effect, this puts elements on the "todo" list.
895 * Also stores a list of all top level classes in rootClasses.
896 */
897 public List<JCCompilationUnit> enterTrees(List<JCCompilationUnit> roots) {
898 //enter symbols for all files
899 if (taskListener != null) {
900 for (JCCompilationUnit unit: roots) {
901 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, unit);
902 taskListener.started(e);
903 }
904 }
906 enter.main(roots);
908 if (taskListener != null) {
909 for (JCCompilationUnit unit: roots) {
910 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, unit);
911 taskListener.finished(e);
912 }
913 }
915 //If generating source, remember the classes declared in
916 //the original compilation units listed on the command line.
917 if (sourceOutput || stubOutput) {
918 ListBuffer<JCClassDecl> cdefs = lb();
919 for (JCCompilationUnit unit : roots) {
920 for (List<JCTree> defs = unit.defs;
921 defs.nonEmpty();
922 defs = defs.tail) {
923 if (defs.head instanceof JCClassDecl)
924 cdefs.append((JCClassDecl)defs.head);
925 }
926 }
927 rootClasses = cdefs.toList();
928 }
930 // Ensure the input files have been recorded. Although this is normally
931 // done by readSource, it may not have been done if the trees were read
932 // in a prior round of annotation processing, and the trees have been
933 // cleaned and are being reused.
934 for (JCCompilationUnit unit : roots) {
935 inputFiles.add(unit.sourcefile);
936 }
938 return roots;
939 }
941 /**
942 * Set to true to enable skeleton annotation processing code.
943 * Currently, we assume this variable will be replaced more
944 * advanced logic to figure out if annotation processing is
945 * needed.
946 */
947 boolean processAnnotations = false;
949 /**
950 * Object to handle annotation processing.
951 */
952 private JavacProcessingEnvironment procEnvImpl = null;
954 /**
955 * Check if we should process annotations.
956 * If so, and if no scanner is yet registered, then set up the DocCommentScanner
957 * to catch doc comments, and set keepComments so the parser records them in
958 * the compilation unit.
959 *
960 * @param processors user provided annotation processors to bypass
961 * discovery, {@code null} means that no processors were provided
962 */
963 public void initProcessAnnotations(Iterable<? extends Processor> processors) {
964 // Process annotations if processing is not disabled and there
965 // is at least one Processor available.
966 Options options = Options.instance(context);
967 if (options.isSet(PROC, "none")) {
968 processAnnotations = false;
969 } else if (procEnvImpl == null) {
970 procEnvImpl = new JavacProcessingEnvironment(context, processors);
971 processAnnotations = procEnvImpl.atLeastOneProcessor();
973 if (processAnnotations) {
974 options.put("save-parameter-names", "save-parameter-names");
975 reader.saveParameterNames = true;
976 keepComments = true;
977 genEndPos = true;
978 if (taskListener != null)
979 taskListener.started(new TaskEvent(TaskEvent.Kind.ANNOTATION_PROCESSING));
980 log.deferDiagnostics = true;
981 } else { // free resources
982 procEnvImpl.close();
983 }
984 }
985 }
987 // TODO: called by JavacTaskImpl
988 public JavaCompiler processAnnotations(List<JCCompilationUnit> roots) {
989 return processAnnotations(roots, List.<String>nil());
990 }
992 /**
993 * Process any anotations found in the specifed compilation units.
994 * @param roots a list of compilation units
995 * @return an instance of the compiler in which to complete the compilation
996 */
997 // Implementation note: when this method is called, log.deferredDiagnostics
998 // will have been set true by initProcessAnnotations, meaning that any diagnostics
999 // that are reported will go into the log.deferredDiagnostics queue.
1000 // By the time this method exits, log.deferDiagnostics must be set back to false,
1001 // and all deferredDiagnostics must have been handled: i.e. either reported
1002 // or determined to be transient, and therefore suppressed.
1003 public JavaCompiler processAnnotations(List<JCCompilationUnit> roots,
1004 List<String> classnames) {
1005 if (shouldStop(CompileState.PROCESS)) {
1006 // Errors were encountered.
1007 // Unless all the errors are resolve errors, the errors were parse errors
1008 // or other errors during enter which cannot be fixed by running
1009 // any annotation processors.
1010 if (unrecoverableError()) {
1011 log.reportDeferredDiagnostics();
1012 return this;
1013 }
1014 }
1016 // ASSERT: processAnnotations and procEnvImpl should have been set up by
1017 // by initProcessAnnotations
1019 // NOTE: The !classnames.isEmpty() checks should be refactored to Main.
1021 if (!processAnnotations) {
1022 // If there are no annotation processors present, and
1023 // annotation processing is to occur with compilation,
1024 // emit a warning.
1025 Options options = Options.instance(context);
1026 if (options.isSet(PROC, "only")) {
1027 log.warning("proc.proc-only.requested.no.procs");
1028 todo.clear();
1029 }
1030 // If not processing annotations, classnames must be empty
1031 if (!classnames.isEmpty()) {
1032 log.error("proc.no.explicit.annotation.processing.requested",
1033 classnames);
1034 }
1035 log.reportDeferredDiagnostics();
1036 return this; // continue regular compilation
1037 }
1039 try {
1040 List<ClassSymbol> classSymbols = List.nil();
1041 List<PackageSymbol> pckSymbols = List.nil();
1042 if (!classnames.isEmpty()) {
1043 // Check for explicit request for annotation
1044 // processing
1045 if (!explicitAnnotationProcessingRequested()) {
1046 log.error("proc.no.explicit.annotation.processing.requested",
1047 classnames);
1048 log.reportDeferredDiagnostics();
1049 return this; // TODO: Will this halt compilation?
1050 } else {
1051 boolean errors = false;
1052 for (String nameStr : classnames) {
1053 Symbol sym = resolveIdent(nameStr);
1054 if (sym == null || (sym.kind == Kinds.PCK && !processPcks)) {
1055 log.error("proc.cant.find.class", nameStr);
1056 errors = true;
1057 continue;
1058 }
1059 try {
1060 if (sym.kind == Kinds.PCK)
1061 sym.complete();
1062 if (sym.exists()) {
1063 if (sym.kind == Kinds.PCK)
1064 pckSymbols = pckSymbols.prepend((PackageSymbol)sym);
1065 else
1066 classSymbols = classSymbols.prepend((ClassSymbol)sym);
1067 continue;
1068 }
1069 Assert.check(sym.kind == Kinds.PCK);
1070 log.warning("proc.package.does.not.exist", nameStr);
1071 pckSymbols = pckSymbols.prepend((PackageSymbol)sym);
1072 } catch (CompletionFailure e) {
1073 log.error("proc.cant.find.class", nameStr);
1074 errors = true;
1075 continue;
1076 }
1077 }
1078 if (errors) {
1079 log.reportDeferredDiagnostics();
1080 return this;
1081 }
1082 }
1083 }
1084 try {
1085 JavaCompiler c = procEnvImpl.doProcessing(context, roots, classSymbols, pckSymbols);
1086 if (c != this)
1087 annotationProcessingOccurred = c.annotationProcessingOccurred = true;
1088 // doProcessing will have handled deferred diagnostics
1089 Assert.check(c.log.deferDiagnostics == false
1090 && c.log.deferredDiagnostics.size() == 0);
1091 return c;
1092 } finally {
1093 procEnvImpl.close();
1094 }
1095 } catch (CompletionFailure ex) {
1096 log.error("cant.access", ex.sym, ex.getDetailValue());
1097 log.reportDeferredDiagnostics();
1098 return this;
1099 }
1100 }
1102 private boolean unrecoverableError() {
1103 for (JCDiagnostic d: log.deferredDiagnostics) {
1104 if (d.getKind() == JCDiagnostic.Kind.ERROR && !d.isFlagSet(RECOVERABLE))
1105 return true;
1106 }
1107 return false;
1108 }
1110 boolean explicitAnnotationProcessingRequested() {
1111 Options options = Options.instance(context);
1112 return
1113 explicitAnnotationProcessingRequested ||
1114 options.isSet(PROCESSOR) ||
1115 options.isSet(PROCESSORPATH) ||
1116 options.isSet(PROC, "only") ||
1117 options.isSet(XPRINT);
1118 }
1120 /**
1121 * Attribute a list of parse trees, such as found on the "todo" list.
1122 * Note that attributing classes may cause additional files to be
1123 * parsed and entered via the SourceCompleter.
1124 * Attribution of the entries in the list does not stop if any errors occur.
1125 * @returns a list of environments for attributd classes.
1126 */
1127 public Queue<Env<AttrContext>> attribute(Queue<Env<AttrContext>> envs) {
1128 ListBuffer<Env<AttrContext>> results = lb();
1129 while (!envs.isEmpty())
1130 results.append(attribute(envs.remove()));
1131 return stopIfError(CompileState.ATTR, results);
1132 }
1134 /**
1135 * Attribute a parse tree.
1136 * @returns the attributed parse tree
1137 */
1138 public Env<AttrContext> attribute(Env<AttrContext> env) {
1139 if (compileStates.isDone(env, CompileState.ATTR))
1140 return env;
1142 if (verboseCompilePolicy)
1143 printNote("[attribute " + env.enclClass.sym + "]");
1144 if (verbose)
1145 printVerbose("checking.attribution", env.enclClass.sym);
1147 if (taskListener != null) {
1148 TaskEvent e = new TaskEvent(TaskEvent.Kind.ANALYZE, env.toplevel, env.enclClass.sym);
1149 taskListener.started(e);
1150 }
1152 JavaFileObject prev = log.useSource(
1153 env.enclClass.sym.sourcefile != null ?
1154 env.enclClass.sym.sourcefile :
1155 env.toplevel.sourcefile);
1156 try {
1157 attr.attribClass(env.tree.pos(), env.enclClass.sym);
1158 if (errorCount() > 0 && !shouldStop(CompileState.ATTR)) {
1159 //if in fail-over mode, ensure that AST expression nodes
1160 //are correctly initialized (e.g. they have a type/symbol)
1161 attr.postAttr(env);
1162 }
1163 compileStates.put(env, CompileState.ATTR);
1164 }
1165 finally {
1166 log.useSource(prev);
1167 }
1169 return env;
1170 }
1172 /**
1173 * Perform dataflow checks on attributed parse trees.
1174 * These include checks for definite assignment and unreachable statements.
1175 * If any errors occur, an empty list will be returned.
1176 * @returns the list of attributed parse trees
1177 */
1178 public Queue<Env<AttrContext>> flow(Queue<Env<AttrContext>> envs) {
1179 ListBuffer<Env<AttrContext>> results = lb();
1180 for (Env<AttrContext> env: envs) {
1181 flow(env, results);
1182 }
1183 return stopIfError(CompileState.FLOW, results);
1184 }
1186 /**
1187 * Perform dataflow checks on an attributed parse tree.
1188 */
1189 public Queue<Env<AttrContext>> flow(Env<AttrContext> env) {
1190 ListBuffer<Env<AttrContext>> results = lb();
1191 flow(env, results);
1192 return stopIfError(CompileState.FLOW, results);
1193 }
1195 /**
1196 * Perform dataflow checks on an attributed parse tree.
1197 */
1198 protected void flow(Env<AttrContext> env, Queue<Env<AttrContext>> results) {
1199 try {
1200 if (shouldStop(CompileState.FLOW))
1201 return;
1203 if (relax || compileStates.isDone(env, CompileState.FLOW)) {
1204 results.add(env);
1205 return;
1206 }
1208 if (verboseCompilePolicy)
1209 printNote("[flow " + env.enclClass.sym + "]");
1210 JavaFileObject prev = log.useSource(
1211 env.enclClass.sym.sourcefile != null ?
1212 env.enclClass.sym.sourcefile :
1213 env.toplevel.sourcefile);
1214 try {
1215 make.at(Position.FIRSTPOS);
1216 TreeMaker localMake = make.forToplevel(env.toplevel);
1217 flow.analyzeTree(env, localMake);
1218 compileStates.put(env, CompileState.FLOW);
1220 if (shouldStop(CompileState.FLOW))
1221 return;
1223 results.add(env);
1224 }
1225 finally {
1226 log.useSource(prev);
1227 }
1228 }
1229 finally {
1230 if (taskListener != null) {
1231 TaskEvent e = new TaskEvent(TaskEvent.Kind.ANALYZE, env.toplevel, env.enclClass.sym);
1232 taskListener.finished(e);
1233 }
1234 }
1235 }
1237 /**
1238 * Prepare attributed parse trees, in conjunction with their attribution contexts,
1239 * for source or code generation.
1240 * If any errors occur, an empty list will be returned.
1241 * @returns a list containing the classes to be generated
1242 */
1243 public Queue<Pair<Env<AttrContext>, JCClassDecl>> desugar(Queue<Env<AttrContext>> envs) {
1244 ListBuffer<Pair<Env<AttrContext>, JCClassDecl>> results = lb();
1245 for (Env<AttrContext> env: envs)
1246 desugar(env, results);
1247 return stopIfError(CompileState.FLOW, results);
1248 }
1250 HashMap<Env<AttrContext>, Queue<Pair<Env<AttrContext>, JCClassDecl>>> desugaredEnvs =
1251 new HashMap<Env<AttrContext>, Queue<Pair<Env<AttrContext>, JCClassDecl>>>();
1253 /**
1254 * Prepare attributed parse trees, in conjunction with their attribution contexts,
1255 * for source or code generation. If the file was not listed on the command line,
1256 * the current implicitSourcePolicy is taken into account.
1257 * The preparation stops as soon as an error is found.
1258 */
1259 protected void desugar(final Env<AttrContext> env, Queue<Pair<Env<AttrContext>, JCClassDecl>> results) {
1260 if (shouldStop(CompileState.TRANSTYPES))
1261 return;
1263 if (implicitSourcePolicy == ImplicitSourcePolicy.NONE
1264 && !inputFiles.contains(env.toplevel.sourcefile)) {
1265 return;
1266 }
1268 if (compileStates.isDone(env, CompileState.LOWER)) {
1269 results.addAll(desugaredEnvs.get(env));
1270 return;
1271 }
1273 /**
1274 * Ensure that superclasses of C are desugared before C itself. This is
1275 * required for two reasons: (i) as erasure (TransTypes) destroys
1276 * information needed in flow analysis and (ii) as some checks carried
1277 * out during lowering require that all synthetic fields/methods have
1278 * already been added to C and its superclasses.
1279 */
1280 class ScanNested extends TreeScanner {
1281 Set<Env<AttrContext>> dependencies = new LinkedHashSet<Env<AttrContext>>();
1282 @Override
1283 public void visitClassDef(JCClassDecl node) {
1284 Type st = types.supertype(node.sym.type);
1285 if (st.tag == TypeTags.CLASS) {
1286 ClassSymbol c = st.tsym.outermostClass();
1287 Env<AttrContext> stEnv = enter.getEnv(c);
1288 if (stEnv != null && env != stEnv) {
1289 if (dependencies.add(stEnv))
1290 scan(stEnv.tree);
1291 }
1292 }
1293 super.visitClassDef(node);
1294 }
1295 }
1296 ScanNested scanner = new ScanNested();
1297 scanner.scan(env.tree);
1298 for (Env<AttrContext> dep: scanner.dependencies) {
1299 if (!compileStates.isDone(dep, CompileState.FLOW))
1300 desugaredEnvs.put(dep, desugar(flow(attribute(dep))));
1301 }
1303 //We need to check for error another time as more classes might
1304 //have been attributed and analyzed at this stage
1305 if (shouldStop(CompileState.TRANSTYPES))
1306 return;
1308 if (verboseCompilePolicy)
1309 printNote("[desugar " + env.enclClass.sym + "]");
1311 JavaFileObject prev = log.useSource(env.enclClass.sym.sourcefile != null ?
1312 env.enclClass.sym.sourcefile :
1313 env.toplevel.sourcefile);
1314 try {
1315 //save tree prior to rewriting
1316 JCTree untranslated = env.tree;
1318 make.at(Position.FIRSTPOS);
1319 TreeMaker localMake = make.forToplevel(env.toplevel);
1321 if (env.tree instanceof JCCompilationUnit) {
1322 if (!(stubOutput || sourceOutput || printFlat)) {
1323 if (shouldStop(CompileState.LOWER))
1324 return;
1325 List<JCTree> pdef = lower.translateTopLevelClass(env, env.tree, localMake);
1326 if (pdef.head != null) {
1327 Assert.check(pdef.tail.isEmpty());
1328 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, (JCClassDecl)pdef.head));
1329 }
1330 }
1331 return;
1332 }
1334 if (stubOutput) {
1335 //emit stub Java source file, only for compilation
1336 //units enumerated explicitly on the command line
1337 JCClassDecl cdef = (JCClassDecl)env.tree;
1338 if (untranslated instanceof JCClassDecl &&
1339 rootClasses.contains((JCClassDecl)untranslated) &&
1340 ((cdef.mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1341 cdef.sym.packge().getQualifiedName() == names.java_lang)) {
1342 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, removeMethodBodies(cdef)));
1343 }
1344 return;
1345 }
1347 if (shouldStop(CompileState.TRANSTYPES))
1348 return;
1350 env.tree = transTypes.translateTopLevelClass(env.tree, localMake);
1351 compileStates.put(env, CompileState.TRANSTYPES);
1353 if (shouldStop(CompileState.LOWER))
1354 return;
1356 if (sourceOutput) {
1357 //emit standard Java source file, only for compilation
1358 //units enumerated explicitly on the command line
1359 JCClassDecl cdef = (JCClassDecl)env.tree;
1360 if (untranslated instanceof JCClassDecl &&
1361 rootClasses.contains((JCClassDecl)untranslated)) {
1362 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, cdef));
1363 }
1364 return;
1365 }
1367 //translate out inner classes
1368 List<JCTree> cdefs = lower.translateTopLevelClass(env, env.tree, localMake);
1369 compileStates.put(env, CompileState.LOWER);
1371 if (shouldStop(CompileState.LOWER))
1372 return;
1374 //generate code for each class
1375 for (List<JCTree> l = cdefs; l.nonEmpty(); l = l.tail) {
1376 JCClassDecl cdef = (JCClassDecl)l.head;
1377 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, cdef));
1378 }
1379 }
1380 finally {
1381 log.useSource(prev);
1382 }
1384 }
1386 /** Generates the source or class file for a list of classes.
1387 * The decision to generate a source file or a class file is
1388 * based upon the compiler's options.
1389 * Generation stops if an error occurs while writing files.
1390 */
1391 public void generate(Queue<Pair<Env<AttrContext>, JCClassDecl>> queue) {
1392 generate(queue, null);
1393 }
1395 public void generate(Queue<Pair<Env<AttrContext>, JCClassDecl>> queue, Queue<JavaFileObject> results) {
1396 if (shouldStop(CompileState.GENERATE))
1397 return;
1399 boolean usePrintSource = (stubOutput || sourceOutput || printFlat);
1401 for (Pair<Env<AttrContext>, JCClassDecl> x: queue) {
1402 Env<AttrContext> env = x.fst;
1403 JCClassDecl cdef = x.snd;
1405 if (verboseCompilePolicy) {
1406 printNote("[generate "
1407 + (usePrintSource ? " source" : "code")
1408 + " " + cdef.sym + "]");
1409 }
1411 if (taskListener != null) {
1412 TaskEvent e = new TaskEvent(TaskEvent.Kind.GENERATE, env.toplevel, cdef.sym);
1413 taskListener.started(e);
1414 }
1416 JavaFileObject prev = log.useSource(env.enclClass.sym.sourcefile != null ?
1417 env.enclClass.sym.sourcefile :
1418 env.toplevel.sourcefile);
1419 try {
1420 JavaFileObject file;
1421 if (usePrintSource)
1422 file = printSource(env, cdef);
1423 else
1424 file = genCode(env, cdef);
1425 if (results != null && file != null)
1426 results.add(file);
1427 } catch (IOException ex) {
1428 log.error(cdef.pos(), "class.cant.write",
1429 cdef.sym, ex.getMessage());
1430 return;
1431 } finally {
1432 log.useSource(prev);
1433 }
1435 if (taskListener != null) {
1436 TaskEvent e = new TaskEvent(TaskEvent.Kind.GENERATE, env.toplevel, cdef.sym);
1437 taskListener.finished(e);
1438 }
1439 }
1440 }
1442 // where
1443 Map<JCCompilationUnit, Queue<Env<AttrContext>>> groupByFile(Queue<Env<AttrContext>> envs) {
1444 // use a LinkedHashMap to preserve the order of the original list as much as possible
1445 Map<JCCompilationUnit, Queue<Env<AttrContext>>> map = new LinkedHashMap<JCCompilationUnit, Queue<Env<AttrContext>>>();
1446 for (Env<AttrContext> env: envs) {
1447 Queue<Env<AttrContext>> sublist = map.get(env.toplevel);
1448 if (sublist == null) {
1449 sublist = new ListBuffer<Env<AttrContext>>();
1450 map.put(env.toplevel, sublist);
1451 }
1452 sublist.add(env);
1453 }
1454 return map;
1455 }
1457 JCClassDecl removeMethodBodies(JCClassDecl cdef) {
1458 final boolean isInterface = (cdef.mods.flags & Flags.INTERFACE) != 0;
1459 class MethodBodyRemover extends TreeTranslator {
1460 @Override
1461 public void visitMethodDef(JCMethodDecl tree) {
1462 tree.mods.flags &= ~Flags.SYNCHRONIZED;
1463 for (JCVariableDecl vd : tree.params)
1464 vd.mods.flags &= ~Flags.FINAL;
1465 tree.body = null;
1466 super.visitMethodDef(tree);
1467 }
1468 @Override
1469 public void visitVarDef(JCVariableDecl tree) {
1470 if (tree.init != null && tree.init.type.constValue() == null)
1471 tree.init = null;
1472 super.visitVarDef(tree);
1473 }
1474 @Override
1475 public void visitClassDef(JCClassDecl tree) {
1476 ListBuffer<JCTree> newdefs = lb();
1477 for (List<JCTree> it = tree.defs; it.tail != null; it = it.tail) {
1478 JCTree t = it.head;
1479 switch (t.getTag()) {
1480 case JCTree.CLASSDEF:
1481 if (isInterface ||
1482 (((JCClassDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1483 (((JCClassDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCClassDecl) t).sym.packge().getQualifiedName() == names.java_lang)
1484 newdefs.append(t);
1485 break;
1486 case JCTree.METHODDEF:
1487 if (isInterface ||
1488 (((JCMethodDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1489 ((JCMethodDecl) t).sym.name == names.init ||
1490 (((JCMethodDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCMethodDecl) t).sym.packge().getQualifiedName() == names.java_lang)
1491 newdefs.append(t);
1492 break;
1493 case JCTree.VARDEF:
1494 if (isInterface || (((JCVariableDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1495 (((JCVariableDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCVariableDecl) t).sym.packge().getQualifiedName() == names.java_lang)
1496 newdefs.append(t);
1497 break;
1498 default:
1499 break;
1500 }
1501 }
1502 tree.defs = newdefs.toList();
1503 super.visitClassDef(tree);
1504 }
1505 }
1506 MethodBodyRemover r = new MethodBodyRemover();
1507 return r.translate(cdef);
1508 }
1510 public void reportDeferredDiagnostics() {
1511 if (annotationProcessingOccurred
1512 && implicitSourceFilesRead
1513 && implicitSourcePolicy == ImplicitSourcePolicy.UNSET) {
1514 if (explicitAnnotationProcessingRequested())
1515 log.warning("proc.use.implicit");
1516 else
1517 log.warning("proc.use.proc.or.implicit");
1518 }
1519 chk.reportDeferredDiagnostics();
1520 }
1522 /** Close the compiler, flushing the logs
1523 */
1524 public void close() {
1525 close(true);
1526 }
1528 public void close(boolean disposeNames) {
1529 rootClasses = null;
1530 reader = null;
1531 make = null;
1532 writer = null;
1533 enter = null;
1534 if (todo != null)
1535 todo.clear();
1536 todo = null;
1537 parserFactory = null;
1538 syms = null;
1539 source = null;
1540 attr = null;
1541 chk = null;
1542 gen = null;
1543 flow = null;
1544 transTypes = null;
1545 lower = null;
1546 annotate = null;
1547 types = null;
1549 log.flush();
1550 try {
1551 fileManager.flush();
1552 } catch (IOException e) {
1553 throw new Abort(e);
1554 } finally {
1555 if (names != null && disposeNames)
1556 names.dispose();
1557 names = null;
1558 }
1559 }
1561 protected void printNote(String lines) {
1562 Log.printLines(log.noticeWriter, lines);
1563 }
1565 /** Output for "-verbose" option.
1566 * @param key The key to look up the correct internationalized string.
1567 * @param arg An argument for substitution into the output string.
1568 */
1569 protected void printVerbose(String key, Object arg) {
1570 log.printNoteLines("verbose." + key, arg);
1571 }
1573 /** Print numbers of errors and warnings.
1574 */
1575 protected void printCount(String kind, int count) {
1576 if (count != 0) {
1577 String key;
1578 if (count == 1)
1579 key = "count." + kind;
1580 else
1581 key = "count." + kind + ".plural";
1582 log.printErrLines(key, String.valueOf(count));
1583 log.errWriter.flush();
1584 }
1585 }
1587 private static long now() {
1588 return System.currentTimeMillis();
1589 }
1591 private static long elapsed(long then) {
1592 return now() - then;
1593 }
1595 public void initRound(JavaCompiler prev) {
1596 genEndPos = prev.genEndPos;
1597 keepComments = prev.keepComments;
1598 start_msec = prev.start_msec;
1599 hasBeenUsed = true;
1600 }
1602 public static void enableLogging() {
1603 Logger logger = Logger.getLogger(com.sun.tools.javac.Main.class.getPackage().getName());
1604 logger.setLevel(Level.ALL);
1605 for (Handler h : logger.getParent().getHandlers()) {
1606 h.setLevel(Level.ALL);
1607 }
1609 }
1610 }