Tue, 13 Mar 2012 15:43:40 -0700
7150368: javac should include basic ability to generate native headers
Reviewed-by: mcimadamore, darcy, ohrstrom
1 /*
2 * Copyright (c) 1999, 2012, 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.LinkedHashMap;
32 import java.util.LinkedHashSet;
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.DiagnosticListener;
45 import javax.tools.JavaFileManager;
46 import javax.tools.JavaFileObject;
47 import javax.tools.StandardLocation;
49 import static javax.tools.StandardLocation.CLASS_OUTPUT;
51 import com.sun.source.util.TaskEvent;
52 import com.sun.tools.javac.api.MultiTaskListener;
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.comp.*;
57 import com.sun.tools.javac.file.JavacFileManager;
58 import com.sun.tools.javac.jvm.*;
59 import com.sun.tools.javac.parser.*;
60 import com.sun.tools.javac.processing.*;
61 import com.sun.tools.javac.tree.*;
62 import com.sun.tools.javac.tree.JCTree.*;
63 import com.sun.tools.javac.util.*;
64 import com.sun.tools.javac.util.Log.WriterKind;
66 import static com.sun.tools.javac.main.Option.*;
67 import static com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag.*;
68 import static com.sun.tools.javac.util.ListBuffer.lb;
71 /** This class could be the main entry point for GJC when GJC is used as a
72 * component in a larger software system. It provides operations to
73 * construct a new compiler, and to run a new compiler on a set of source
74 * files.
75 *
76 * <p><b>This is NOT part of any supported API.
77 * If you write code that depends on this, you do so at your own risk.
78 * This code and its internal interfaces are subject to change or
79 * deletion without notice.</b>
80 */
81 public class JavaCompiler implements ClassReader.SourceCompleter {
82 /** The context key for the compiler. */
83 protected static final Context.Key<JavaCompiler> compilerKey =
84 new Context.Key<JavaCompiler>();
86 /** Get the JavaCompiler instance for this context. */
87 public static JavaCompiler instance(Context context) {
88 JavaCompiler instance = context.get(compilerKey);
89 if (instance == null)
90 instance = new JavaCompiler(context);
91 return instance;
92 }
94 /** The current version number as a string.
95 */
96 public static String version() {
97 return version("release"); // mm.nn.oo[-milestone]
98 }
100 /** The current full version number as a string.
101 */
102 public static String fullVersion() {
103 return version("full"); // mm.mm.oo[-milestone]-build
104 }
106 private static final String versionRBName = "com.sun.tools.javac.resources.version";
107 private static ResourceBundle versionRB;
109 private static String version(String key) {
110 if (versionRB == null) {
111 try {
112 versionRB = ResourceBundle.getBundle(versionRBName);
113 } catch (MissingResourceException e) {
114 return Log.getLocalizedString("version.not.available");
115 }
116 }
117 try {
118 return versionRB.getString(key);
119 }
120 catch (MissingResourceException e) {
121 return Log.getLocalizedString("version.not.available");
122 }
123 }
125 /**
126 * Control how the compiler's latter phases (attr, flow, desugar, generate)
127 * are connected. Each individual file is processed by each phase in turn,
128 * but with different compile policies, you can control the order in which
129 * each class is processed through its next phase.
130 *
131 * <p>Generally speaking, the compiler will "fail fast" in the face of
132 * errors, although not aggressively so. flow, desugar, etc become no-ops
133 * once any errors have occurred. No attempt is currently made to determine
134 * if it might be safe to process a class through its next phase because
135 * it does not depend on any unrelated errors that might have occurred.
136 */
137 protected static enum CompilePolicy {
138 /**
139 * Just attribute the parse trees.
140 */
141 ATTR_ONLY,
143 /**
144 * Just attribute and do flow analysis on the parse trees.
145 * This should catch most user errors.
146 */
147 CHECK_ONLY,
149 /**
150 * Attribute everything, then do flow analysis for everything,
151 * then desugar everything, and only then generate output.
152 * This means no output will be generated if there are any
153 * errors in any classes.
154 */
155 SIMPLE,
157 /**
158 * Groups the classes for each source file together, then process
159 * each group in a manner equivalent to the {@code SIMPLE} policy.
160 * This means no output will be generated if there are any
161 * errors in any of the classes in a source file.
162 */
163 BY_FILE,
165 /**
166 * Completely process each entry on the todo list in turn.
167 * -- this is the same for 1.5.
168 * Means output might be generated for some classes in a compilation unit
169 * and not others.
170 */
171 BY_TODO;
173 static CompilePolicy decode(String option) {
174 if (option == null)
175 return DEFAULT_COMPILE_POLICY;
176 else if (option.equals("attr"))
177 return ATTR_ONLY;
178 else if (option.equals("check"))
179 return CHECK_ONLY;
180 else if (option.equals("simple"))
181 return SIMPLE;
182 else if (option.equals("byfile"))
183 return BY_FILE;
184 else if (option.equals("bytodo"))
185 return BY_TODO;
186 else
187 return DEFAULT_COMPILE_POLICY;
188 }
189 }
191 private static CompilePolicy DEFAULT_COMPILE_POLICY = CompilePolicy.BY_TODO;
193 protected static enum ImplicitSourcePolicy {
194 /** Don't generate or process implicitly read source files. */
195 NONE,
196 /** Generate classes for implicitly read source files. */
197 CLASS,
198 /** Like CLASS, but generate warnings if annotation processing occurs */
199 UNSET;
201 static ImplicitSourcePolicy decode(String option) {
202 if (option == null)
203 return UNSET;
204 else if (option.equals("none"))
205 return NONE;
206 else if (option.equals("class"))
207 return CLASS;
208 else
209 return UNSET;
210 }
211 }
213 /** The log to be used for error reporting.
214 */
215 public Log log;
217 /** Factory for creating diagnostic objects
218 */
219 JCDiagnostic.Factory diagFactory;
221 /** The tree factory module.
222 */
223 protected TreeMaker make;
225 /** The class reader.
226 */
227 protected ClassReader reader;
229 /** The class writer.
230 */
231 protected ClassWriter writer;
233 /** The native header writer.
234 */
235 protected JNIWriter jniWriter;
237 /** The module for the symbol table entry phases.
238 */
239 protected Enter enter;
241 /** The symbol table.
242 */
243 protected Symtab syms;
245 /** The language version.
246 */
247 protected Source source;
249 /** The module for code generation.
250 */
251 protected Gen gen;
253 /** The name table.
254 */
255 protected Names names;
257 /** The attributor.
258 */
259 protected Attr attr;
261 /** The attributor.
262 */
263 protected Check chk;
265 /** The flow analyzer.
266 */
267 protected Flow flow;
269 /** The type eraser.
270 */
271 protected TransTypes transTypes;
273 /** The syntactic sugar desweetener.
274 */
275 protected Lower lower;
277 /** The annotation annotator.
278 */
279 protected Annotate annotate;
281 /** Force a completion failure on this name
282 */
283 protected final Name completionFailureName;
285 /** Type utilities.
286 */
287 protected Types types;
289 /** Access to file objects.
290 */
291 protected JavaFileManager fileManager;
293 /** Factory for parsers.
294 */
295 protected ParserFactory parserFactory;
297 /** Broadcasting listener for progress events
298 */
299 protected MultiTaskListener taskListener;
301 /**
302 * Annotation processing may require and provide a new instance
303 * of the compiler to be used for the analyze and generate phases.
304 */
305 protected JavaCompiler delegateCompiler;
307 /**
308 * Command line options.
309 */
310 protected Options options;
312 protected Context context;
314 /**
315 * Flag set if any annotation processing occurred.
316 **/
317 protected boolean annotationProcessingOccurred;
319 /**
320 * Flag set if any implicit source files read.
321 **/
322 protected boolean implicitSourceFilesRead;
324 /** Construct a new compiler using a shared context.
325 */
326 public JavaCompiler(Context context) {
327 this.context = context;
328 context.put(compilerKey, this);
330 // if fileManager not already set, register the JavacFileManager to be used
331 if (context.get(JavaFileManager.class) == null)
332 JavacFileManager.preRegister(context);
334 names = Names.instance(context);
335 log = Log.instance(context);
336 diagFactory = JCDiagnostic.Factory.instance(context);
337 reader = ClassReader.instance(context);
338 make = TreeMaker.instance(context);
339 writer = ClassWriter.instance(context);
340 jniWriter = JNIWriter.instance(context);
341 enter = Enter.instance(context);
342 todo = Todo.instance(context);
344 fileManager = context.get(JavaFileManager.class);
345 parserFactory = ParserFactory.instance(context);
347 try {
348 // catch completion problems with predefineds
349 syms = Symtab.instance(context);
350 } catch (CompletionFailure ex) {
351 // inlined Check.completionError as it is not initialized yet
352 log.error("cant.access", ex.sym, ex.getDetailValue());
353 if (ex instanceof ClassReader.BadClassFile)
354 throw new Abort();
355 }
356 source = Source.instance(context);
357 attr = Attr.instance(context);
358 chk = Check.instance(context);
359 gen = Gen.instance(context);
360 flow = Flow.instance(context);
361 transTypes = TransTypes.instance(context);
362 lower = Lower.instance(context);
363 annotate = Annotate.instance(context);
364 types = Types.instance(context);
365 taskListener = MultiTaskListener.instance(context);
367 reader.sourceCompleter = this;
369 options = Options.instance(context);
371 verbose = options.isSet(VERBOSE);
372 sourceOutput = options.isSet(PRINTSOURCE); // used to be -s
373 stubOutput = options.isSet("-stubs");
374 relax = options.isSet("-relax");
375 printFlat = options.isSet("-printflat");
376 attrParseOnly = options.isSet("-attrparseonly");
377 encoding = options.get(ENCODING);
378 lineDebugInfo = options.isUnset(G_CUSTOM) ||
379 options.isSet(G_CUSTOM, "lines");
380 genEndPos = options.isSet(XJCOV) ||
381 context.get(DiagnosticListener.class) != null;
382 devVerbose = options.isSet("dev");
383 processPcks = options.isSet("process.packages");
384 werror = options.isSet(WERROR);
386 if (source.compareTo(Source.DEFAULT) < 0) {
387 if (options.isUnset(XLINT_CUSTOM, "-" + LintCategory.OPTIONS.option)) {
388 if (fileManager instanceof BaseFileManager) {
389 if (((BaseFileManager) fileManager).isDefaultBootClassPath())
390 log.warning(LintCategory.OPTIONS, "source.no.bootclasspath", source.name);
391 }
392 }
393 }
395 verboseCompilePolicy = options.isSet("verboseCompilePolicy");
397 if (attrParseOnly)
398 compilePolicy = CompilePolicy.ATTR_ONLY;
399 else
400 compilePolicy = CompilePolicy.decode(options.get("compilePolicy"));
402 implicitSourcePolicy = ImplicitSourcePolicy.decode(options.get("-implicit"));
404 completionFailureName =
405 options.isSet("failcomplete")
406 ? names.fromString(options.get("failcomplete"))
407 : null;
409 shouldStopPolicy =
410 options.isSet("shouldStopPolicy")
411 ? CompileState.valueOf(options.get("shouldStopPolicy"))
412 : null;
413 if (options.isUnset("oldDiags"))
414 log.setDiagnosticFormatter(RichDiagnosticFormatter.instance(context));
415 }
417 /* Switches:
418 */
420 /** Verbose output.
421 */
422 public boolean verbose;
424 /** Emit plain Java source files rather than class files.
425 */
426 public boolean sourceOutput;
428 /** Emit stub source files rather than class files.
429 */
430 public boolean stubOutput;
432 /** Generate attributed parse tree only.
433 */
434 public boolean attrParseOnly;
436 /** Switch: relax some constraints for producing the jsr14 prototype.
437 */
438 boolean relax;
440 /** Debug switch: Emit Java sources after inner class flattening.
441 */
442 public boolean printFlat;
444 /** The encoding to be used for source input.
445 */
446 public String encoding;
448 /** Generate code with the LineNumberTable attribute for debugging
449 */
450 public boolean lineDebugInfo;
452 /** Switch: should we store the ending positions?
453 */
454 public boolean genEndPos;
456 /** Switch: should we debug ignored exceptions
457 */
458 protected boolean devVerbose;
460 /** Switch: should we (annotation) process packages as well
461 */
462 protected boolean processPcks;
464 /** Switch: treat warnings as errors
465 */
466 protected boolean werror;
468 /** Switch: is annotation processing requested explitly via
469 * CompilationTask.setProcessors?
470 */
471 protected boolean explicitAnnotationProcessingRequested = false;
473 /**
474 * The policy for the order in which to perform the compilation
475 */
476 protected CompilePolicy compilePolicy;
478 /**
479 * The policy for what to do with implicitly read source files
480 */
481 protected ImplicitSourcePolicy implicitSourcePolicy;
483 /**
484 * Report activity related to compilePolicy
485 */
486 public boolean verboseCompilePolicy;
488 /**
489 * Policy of how far to continue processing. null means until first
490 * error.
491 */
492 public CompileState shouldStopPolicy;
494 /** A queue of all as yet unattributed classes.
495 */
496 public Todo todo;
498 /** A list of items to be closed when the compilation is complete.
499 */
500 public List<Closeable> closeables = List.nil();
502 /** Ordered list of compiler phases for each compilation unit. */
503 public enum CompileState {
504 PARSE(1),
505 ENTER(2),
506 PROCESS(3),
507 ATTR(4),
508 FLOW(5),
509 TRANSTYPES(6),
510 LOWER(7),
511 GENERATE(8);
512 CompileState(int value) {
513 this.value = value;
514 }
515 boolean isDone(CompileState other) {
516 return value >= other.value;
517 }
518 private int value;
519 };
520 /** Partial map to record which compiler phases have been executed
521 * for each compilation unit. Used for ATTR and FLOW phases.
522 */
523 protected class CompileStates extends HashMap<Env<AttrContext>,CompileState> {
524 private static final long serialVersionUID = 1812267524140424433L;
525 boolean isDone(Env<AttrContext> env, CompileState cs) {
526 CompileState ecs = get(env);
527 return ecs != null && ecs.isDone(cs);
528 }
529 }
530 private CompileStates compileStates = new CompileStates();
532 /** The set of currently compiled inputfiles, needed to ensure
533 * we don't accidentally overwrite an input file when -s is set.
534 * initialized by `compile'.
535 */
536 protected Set<JavaFileObject> inputFiles = new HashSet<JavaFileObject>();
538 protected boolean shouldStop(CompileState cs) {
539 if (shouldStopPolicy == null)
540 return (errorCount() > 0 || unrecoverableError());
541 else
542 return cs.ordinal() > shouldStopPolicy.ordinal();
543 }
545 /** The number of errors reported so far.
546 */
547 public int errorCount() {
548 if (delegateCompiler != null && delegateCompiler != this)
549 return delegateCompiler.errorCount();
550 else {
551 if (werror && log.nerrors == 0 && log.nwarnings > 0) {
552 log.error("warnings.and.werror");
553 }
554 }
555 return log.nerrors;
556 }
558 protected final <T> Queue<T> stopIfError(CompileState cs, Queue<T> queue) {
559 return shouldStop(cs) ? ListBuffer.<T>lb() : queue;
560 }
562 protected final <T> List<T> stopIfError(CompileState cs, List<T> list) {
563 return shouldStop(cs) ? List.<T>nil() : list;
564 }
566 /** The number of warnings reported so far.
567 */
568 public int warningCount() {
569 if (delegateCompiler != null && delegateCompiler != this)
570 return delegateCompiler.warningCount();
571 else
572 return log.nwarnings;
573 }
575 /** Try to open input stream with given name.
576 * Report an error if this fails.
577 * @param filename The file name of the input stream to be opened.
578 */
579 public CharSequence readSource(JavaFileObject filename) {
580 try {
581 inputFiles.add(filename);
582 return filename.getCharContent(false);
583 } catch (IOException e) {
584 log.error("error.reading.file", filename, JavacFileManager.getMessage(e));
585 return null;
586 }
587 }
589 /** Parse contents of input stream.
590 * @param filename The name of the file from which input stream comes.
591 * @param input The input stream to be parsed.
592 */
593 protected JCCompilationUnit parse(JavaFileObject filename, CharSequence content) {
594 long msec = now();
595 JCCompilationUnit tree = make.TopLevel(List.<JCTree.JCAnnotation>nil(),
596 null, List.<JCTree>nil());
597 if (content != null) {
598 if (verbose) {
599 log.printVerbose("parsing.started", filename);
600 }
601 if (!taskListener.isEmpty()) {
602 TaskEvent e = new TaskEvent(TaskEvent.Kind.PARSE, filename);
603 taskListener.started(e);
604 }
605 Parser parser = parserFactory.newParser(content, keepComments(), genEndPos, lineDebugInfo);
606 tree = parser.parseCompilationUnit();
607 if (verbose) {
608 log.printVerbose("parsing.done", Long.toString(elapsed(msec)));
609 }
610 }
612 tree.sourcefile = filename;
614 if (content != null && !taskListener.isEmpty()) {
615 TaskEvent e = new TaskEvent(TaskEvent.Kind.PARSE, tree);
616 taskListener.finished(e);
617 }
619 return tree;
620 }
621 // where
622 public boolean keepComments = false;
623 protected boolean keepComments() {
624 return keepComments || sourceOutput || stubOutput;
625 }
628 /** Parse contents of file.
629 * @param filename The name of the file to be parsed.
630 */
631 @Deprecated
632 public JCTree.JCCompilationUnit parse(String filename) {
633 JavacFileManager fm = (JavacFileManager)fileManager;
634 return parse(fm.getJavaFileObjectsFromStrings(List.of(filename)).iterator().next());
635 }
637 /** Parse contents of file.
638 * @param filename The name of the file to be parsed.
639 */
640 public JCTree.JCCompilationUnit parse(JavaFileObject filename) {
641 JavaFileObject prev = log.useSource(filename);
642 try {
643 JCTree.JCCompilationUnit t = parse(filename, readSource(filename));
644 if (t.endPositions != null)
645 log.setEndPosTable(filename, t.endPositions);
646 return t;
647 } finally {
648 log.useSource(prev);
649 }
650 }
652 /** Resolve an identifier which may be the binary name of a class or
653 * the Java name of a class or package.
654 * @param name The name to resolve
655 */
656 public Symbol resolveBinaryNameOrIdent(String name) {
657 try {
658 Name flatname = names.fromString(name.replace("/", "."));
659 return reader.loadClass(flatname);
660 } catch (CompletionFailure ignore) {
661 return resolveIdent(name);
662 }
663 }
665 /** Resolve an identifier.
666 * @param name The identifier to resolve
667 */
668 public Symbol resolveIdent(String name) {
669 if (name.equals(""))
670 return syms.errSymbol;
671 JavaFileObject prev = log.useSource(null);
672 try {
673 JCExpression tree = null;
674 for (String s : name.split("\\.", -1)) {
675 if (!SourceVersion.isIdentifier(s)) // TODO: check for keywords
676 return syms.errSymbol;
677 tree = (tree == null) ? make.Ident(names.fromString(s))
678 : make.Select(tree, names.fromString(s));
679 }
680 JCCompilationUnit toplevel =
681 make.TopLevel(List.<JCTree.JCAnnotation>nil(), null, List.<JCTree>nil());
682 toplevel.packge = syms.unnamedPackage;
683 return attr.attribIdent(tree, toplevel);
684 } finally {
685 log.useSource(prev);
686 }
687 }
689 /** Emit plain Java source for a class.
690 * @param env The attribution environment of the outermost class
691 * containing this class.
692 * @param cdef The class definition to be printed.
693 */
694 JavaFileObject printSource(Env<AttrContext> env, JCClassDecl cdef) throws IOException {
695 JavaFileObject outFile
696 = fileManager.getJavaFileForOutput(CLASS_OUTPUT,
697 cdef.sym.flatname.toString(),
698 JavaFileObject.Kind.SOURCE,
699 null);
700 if (inputFiles.contains(outFile)) {
701 log.error(cdef.pos(), "source.cant.overwrite.input.file", outFile);
702 return null;
703 } else {
704 BufferedWriter out = new BufferedWriter(outFile.openWriter());
705 try {
706 new Pretty(out, true).printUnit(env.toplevel, cdef);
707 if (verbose)
708 log.printVerbose("wrote.file", outFile);
709 } finally {
710 out.close();
711 }
712 return outFile;
713 }
714 }
716 /** Generate code and emit a class file for a given class
717 * @param env The attribution environment of the outermost class
718 * containing this class.
719 * @param cdef The class definition from which code is generated.
720 */
721 JavaFileObject genCode(Env<AttrContext> env, JCClassDecl cdef) throws IOException {
722 try {
723 if (gen.genClass(env, cdef) && (errorCount() == 0))
724 return writer.writeClass(cdef.sym);
725 } catch (ClassWriter.PoolOverflow ex) {
726 log.error(cdef.pos(), "limit.pool");
727 } catch (ClassWriter.StringOverflow ex) {
728 log.error(cdef.pos(), "limit.string.overflow",
729 ex.value.substring(0, 20));
730 } catch (CompletionFailure ex) {
731 chk.completionError(cdef.pos(), ex);
732 }
733 return null;
734 }
736 /** Complete compiling a source file that has been accessed
737 * by the class file reader.
738 * @param c The class the source file of which needs to be compiled.
739 * @param filename The name of the source file.
740 * @param f An input stream that reads the source file.
741 */
742 public void complete(ClassSymbol c) throws CompletionFailure {
743 // System.err.println("completing " + c);//DEBUG
744 if (completionFailureName == c.fullname) {
745 throw new CompletionFailure(c, "user-selected completion failure by class name");
746 }
747 JCCompilationUnit tree;
748 JavaFileObject filename = c.classfile;
749 JavaFileObject prev = log.useSource(filename);
751 try {
752 tree = parse(filename, filename.getCharContent(false));
753 } catch (IOException e) {
754 log.error("error.reading.file", filename, JavacFileManager.getMessage(e));
755 tree = make.TopLevel(List.<JCTree.JCAnnotation>nil(), null, List.<JCTree>nil());
756 } finally {
757 log.useSource(prev);
758 }
760 if (!taskListener.isEmpty()) {
761 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, tree);
762 taskListener.started(e);
763 }
765 enter.complete(List.of(tree), c);
767 if (!taskListener.isEmpty()) {
768 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, tree);
769 taskListener.finished(e);
770 }
772 if (enter.getEnv(c) == null) {
773 boolean isPkgInfo =
774 tree.sourcefile.isNameCompatible("package-info",
775 JavaFileObject.Kind.SOURCE);
776 if (isPkgInfo) {
777 if (enter.getEnv(tree.packge) == null) {
778 JCDiagnostic diag =
779 diagFactory.fragment("file.does.not.contain.package",
780 c.location());
781 throw reader.new BadClassFile(c, filename, diag);
782 }
783 } else {
784 JCDiagnostic diag =
785 diagFactory.fragment("file.doesnt.contain.class",
786 c.getQualifiedName());
787 throw reader.new BadClassFile(c, filename, diag);
788 }
789 }
791 implicitSourceFilesRead = true;
792 }
794 /** Track when the JavaCompiler has been used to compile something. */
795 private boolean hasBeenUsed = false;
796 private long start_msec = 0;
797 public long elapsed_msec = 0;
799 public void compile(List<JavaFileObject> sourceFileObject)
800 throws Throwable {
801 compile(sourceFileObject, List.<String>nil(), null);
802 }
804 /**
805 * Main method: compile a list of files, return all compiled classes
806 *
807 * @param sourceFileObjects file objects to be compiled
808 * @param classnames class names to process for annotations
809 * @param processors user provided annotation processors to bypass
810 * discovery, {@code null} means that no processors were provided
811 */
812 public void compile(List<JavaFileObject> sourceFileObjects,
813 List<String> classnames,
814 Iterable<? extends Processor> processors)
815 {
816 if (processors != null && processors.iterator().hasNext())
817 explicitAnnotationProcessingRequested = true;
818 // as a JavaCompiler can only be used once, throw an exception if
819 // it has been used before.
820 if (hasBeenUsed)
821 throw new AssertionError("attempt to reuse JavaCompiler");
822 hasBeenUsed = true;
824 // forcibly set the equivalent of -Xlint:-options, so that no further
825 // warnings about command line options are generated from this point on
826 options.put(XLINT_CUSTOM.text + "-" + LintCategory.OPTIONS.option, "true");
827 options.remove(XLINT_CUSTOM.text + LintCategory.OPTIONS.option);
829 start_msec = now();
831 try {
832 initProcessAnnotations(processors);
834 // These method calls must be chained to avoid memory leaks
835 delegateCompiler =
836 processAnnotations(
837 enterTrees(stopIfError(CompileState.PARSE, parseFiles(sourceFileObjects))),
838 classnames);
840 delegateCompiler.compile2();
841 delegateCompiler.close();
842 elapsed_msec = delegateCompiler.elapsed_msec;
843 } catch (Abort ex) {
844 if (devVerbose)
845 ex.printStackTrace(System.err);
846 } finally {
847 if (procEnvImpl != null)
848 procEnvImpl.close();
849 }
850 }
852 /**
853 * The phases following annotation processing: attribution,
854 * desugar, and finally code generation.
855 */
856 private void compile2() {
857 try {
858 switch (compilePolicy) {
859 case ATTR_ONLY:
860 attribute(todo);
861 break;
863 case CHECK_ONLY:
864 flow(attribute(todo));
865 break;
867 case SIMPLE:
868 generate(desugar(flow(attribute(todo))));
869 break;
871 case BY_FILE: {
872 Queue<Queue<Env<AttrContext>>> q = todo.groupByFile();
873 while (!q.isEmpty() && !shouldStop(CompileState.ATTR)) {
874 generate(desugar(flow(attribute(q.remove()))));
875 }
876 }
877 break;
879 case BY_TODO:
880 while (!todo.isEmpty())
881 generate(desugar(flow(attribute(todo.remove()))));
882 break;
884 default:
885 Assert.error("unknown compile policy");
886 }
887 } catch (Abort ex) {
888 if (devVerbose)
889 ex.printStackTrace(System.err);
890 }
892 if (verbose) {
893 elapsed_msec = elapsed(start_msec);
894 log.printVerbose("total", Long.toString(elapsed_msec));
895 }
897 reportDeferredDiagnostics();
899 if (!log.hasDiagnosticListener()) {
900 printCount("error", errorCount());
901 printCount("warn", warningCount());
902 }
903 }
905 private List<JCClassDecl> rootClasses;
907 /**
908 * Parses a list of files.
909 */
910 public List<JCCompilationUnit> parseFiles(Iterable<JavaFileObject> fileObjects) {
911 if (shouldStop(CompileState.PARSE))
912 return List.nil();
914 //parse all files
915 ListBuffer<JCCompilationUnit> trees = lb();
916 Set<JavaFileObject> filesSoFar = new HashSet<JavaFileObject>();
917 for (JavaFileObject fileObject : fileObjects) {
918 if (!filesSoFar.contains(fileObject)) {
919 filesSoFar.add(fileObject);
920 trees.append(parse(fileObject));
921 }
922 }
923 return trees.toList();
924 }
926 /**
927 * Enter the symbols found in a list of parse trees.
928 * As a side-effect, this puts elements on the "todo" list.
929 * Also stores a list of all top level classes in rootClasses.
930 */
931 public List<JCCompilationUnit> enterTrees(List<JCCompilationUnit> roots) {
932 //enter symbols for all files
933 if (!taskListener.isEmpty()) {
934 for (JCCompilationUnit unit: roots) {
935 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, unit);
936 taskListener.started(e);
937 }
938 }
940 enter.main(roots);
942 if (!taskListener.isEmpty()) {
943 for (JCCompilationUnit unit: roots) {
944 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, unit);
945 taskListener.finished(e);
946 }
947 }
949 //If generating source, remember the classes declared in
950 //the original compilation units listed on the command line.
951 if (sourceOutput || stubOutput) {
952 ListBuffer<JCClassDecl> cdefs = lb();
953 for (JCCompilationUnit unit : roots) {
954 for (List<JCTree> defs = unit.defs;
955 defs.nonEmpty();
956 defs = defs.tail) {
957 if (defs.head instanceof JCClassDecl)
958 cdefs.append((JCClassDecl)defs.head);
959 }
960 }
961 rootClasses = cdefs.toList();
962 }
964 // Ensure the input files have been recorded. Although this is normally
965 // done by readSource, it may not have been done if the trees were read
966 // in a prior round of annotation processing, and the trees have been
967 // cleaned and are being reused.
968 for (JCCompilationUnit unit : roots) {
969 inputFiles.add(unit.sourcefile);
970 }
972 return roots;
973 }
975 /**
976 * Set to true to enable skeleton annotation processing code.
977 * Currently, we assume this variable will be replaced more
978 * advanced logic to figure out if annotation processing is
979 * needed.
980 */
981 boolean processAnnotations = false;
983 /**
984 * Object to handle annotation processing.
985 */
986 private JavacProcessingEnvironment procEnvImpl = null;
988 /**
989 * Check if we should process annotations.
990 * If so, and if no scanner is yet registered, then set up the DocCommentScanner
991 * to catch doc comments, and set keepComments so the parser records them in
992 * the compilation unit.
993 *
994 * @param processors user provided annotation processors to bypass
995 * discovery, {@code null} means that no processors were provided
996 */
997 public void initProcessAnnotations(Iterable<? extends Processor> processors) {
998 // Process annotations if processing is not disabled and there
999 // is at least one Processor available.
1000 if (options.isSet(PROC, "none")) {
1001 processAnnotations = false;
1002 } else if (procEnvImpl == null) {
1003 procEnvImpl = new JavacProcessingEnvironment(context, processors);
1004 processAnnotations = procEnvImpl.atLeastOneProcessor();
1006 if (processAnnotations) {
1007 options.put("save-parameter-names", "save-parameter-names");
1008 reader.saveParameterNames = true;
1009 keepComments = true;
1010 genEndPos = true;
1011 if (!taskListener.isEmpty())
1012 taskListener.started(new TaskEvent(TaskEvent.Kind.ANNOTATION_PROCESSING));
1013 log.deferDiagnostics = true;
1014 } else { // free resources
1015 procEnvImpl.close();
1016 }
1017 }
1018 }
1020 // TODO: called by JavacTaskImpl
1021 public JavaCompiler processAnnotations(List<JCCompilationUnit> roots) {
1022 return processAnnotations(roots, List.<String>nil());
1023 }
1025 /**
1026 * Process any annotations found in the specified compilation units.
1027 * @param roots a list of compilation units
1028 * @return an instance of the compiler in which to complete the compilation
1029 */
1030 // Implementation note: when this method is called, log.deferredDiagnostics
1031 // will have been set true by initProcessAnnotations, meaning that any diagnostics
1032 // that are reported will go into the log.deferredDiagnostics queue.
1033 // By the time this method exits, log.deferDiagnostics must be set back to false,
1034 // and all deferredDiagnostics must have been handled: i.e. either reported
1035 // or determined to be transient, and therefore suppressed.
1036 public JavaCompiler processAnnotations(List<JCCompilationUnit> roots,
1037 List<String> classnames) {
1038 if (shouldStop(CompileState.PROCESS)) {
1039 // Errors were encountered.
1040 // Unless all the errors are resolve errors, the errors were parse errors
1041 // or other errors during enter which cannot be fixed by running
1042 // any annotation processors.
1043 if (unrecoverableError()) {
1044 log.reportDeferredDiagnostics();
1045 return this;
1046 }
1047 }
1049 // ASSERT: processAnnotations and procEnvImpl should have been set up by
1050 // by initProcessAnnotations
1052 // NOTE: The !classnames.isEmpty() checks should be refactored to Main.
1054 if (!processAnnotations) {
1055 // If there are no annotation processors present, and
1056 // annotation processing is to occur with compilation,
1057 // emit a warning.
1058 if (options.isSet(PROC, "only")) {
1059 log.warning("proc.proc-only.requested.no.procs");
1060 todo.clear();
1061 }
1062 // If not processing annotations, classnames must be empty
1063 if (!classnames.isEmpty()) {
1064 log.error("proc.no.explicit.annotation.processing.requested",
1065 classnames);
1066 }
1067 log.reportDeferredDiagnostics();
1068 return this; // continue regular compilation
1069 }
1071 try {
1072 List<ClassSymbol> classSymbols = List.nil();
1073 List<PackageSymbol> pckSymbols = List.nil();
1074 if (!classnames.isEmpty()) {
1075 // Check for explicit request for annotation
1076 // processing
1077 if (!explicitAnnotationProcessingRequested()) {
1078 log.error("proc.no.explicit.annotation.processing.requested",
1079 classnames);
1080 log.reportDeferredDiagnostics();
1081 return this; // TODO: Will this halt compilation?
1082 } else {
1083 boolean errors = false;
1084 for (String nameStr : classnames) {
1085 Symbol sym = resolveBinaryNameOrIdent(nameStr);
1086 if (sym == null ||
1087 (sym.kind == Kinds.PCK && !processPcks) ||
1088 sym.kind == Kinds.ABSENT_TYP) {
1089 log.error("proc.cant.find.class", nameStr);
1090 errors = true;
1091 continue;
1092 }
1093 try {
1094 if (sym.kind == Kinds.PCK)
1095 sym.complete();
1096 if (sym.exists()) {
1097 if (sym.kind == Kinds.PCK)
1098 pckSymbols = pckSymbols.prepend((PackageSymbol)sym);
1099 else
1100 classSymbols = classSymbols.prepend((ClassSymbol)sym);
1101 continue;
1102 }
1103 Assert.check(sym.kind == Kinds.PCK);
1104 log.warning("proc.package.does.not.exist", nameStr);
1105 pckSymbols = pckSymbols.prepend((PackageSymbol)sym);
1106 } catch (CompletionFailure e) {
1107 log.error("proc.cant.find.class", nameStr);
1108 errors = true;
1109 continue;
1110 }
1111 }
1112 if (errors) {
1113 log.reportDeferredDiagnostics();
1114 return this;
1115 }
1116 }
1117 }
1118 try {
1119 JavaCompiler c = procEnvImpl.doProcessing(context, roots, classSymbols, pckSymbols);
1120 if (c != this)
1121 annotationProcessingOccurred = c.annotationProcessingOccurred = true;
1122 // doProcessing will have handled deferred diagnostics
1123 Assert.check(c.log.deferDiagnostics == false
1124 && c.log.deferredDiagnostics.size() == 0);
1125 return c;
1126 } finally {
1127 procEnvImpl.close();
1128 }
1129 } catch (CompletionFailure ex) {
1130 log.error("cant.access", ex.sym, ex.getDetailValue());
1131 log.reportDeferredDiagnostics();
1132 return this;
1133 }
1134 }
1136 private boolean unrecoverableError() {
1137 for (JCDiagnostic d: log.deferredDiagnostics) {
1138 if (d.getKind() == JCDiagnostic.Kind.ERROR && !d.isFlagSet(RECOVERABLE))
1139 return true;
1140 }
1141 return false;
1142 }
1144 boolean explicitAnnotationProcessingRequested() {
1145 return
1146 explicitAnnotationProcessingRequested ||
1147 explicitAnnotationProcessingRequested(options);
1148 }
1150 static boolean explicitAnnotationProcessingRequested(Options options) {
1151 return
1152 options.isSet(PROCESSOR) ||
1153 options.isSet(PROCESSORPATH) ||
1154 options.isSet(PROC, "only") ||
1155 options.isSet(XPRINT);
1156 }
1158 /**
1159 * Attribute a list of parse trees, such as found on the "todo" list.
1160 * Note that attributing classes may cause additional files to be
1161 * parsed and entered via the SourceCompleter.
1162 * Attribution of the entries in the list does not stop if any errors occur.
1163 * @returns a list of environments for attributd classes.
1164 */
1165 public Queue<Env<AttrContext>> attribute(Queue<Env<AttrContext>> envs) {
1166 ListBuffer<Env<AttrContext>> results = lb();
1167 while (!envs.isEmpty())
1168 results.append(attribute(envs.remove()));
1169 return stopIfError(CompileState.ATTR, results);
1170 }
1172 /**
1173 * Attribute a parse tree.
1174 * @returns the attributed parse tree
1175 */
1176 public Env<AttrContext> attribute(Env<AttrContext> env) {
1177 if (compileStates.isDone(env, CompileState.ATTR))
1178 return env;
1180 if (verboseCompilePolicy)
1181 printNote("[attribute " + env.enclClass.sym + "]");
1182 if (verbose)
1183 log.printVerbose("checking.attribution", env.enclClass.sym);
1185 if (!taskListener.isEmpty()) {
1186 TaskEvent e = new TaskEvent(TaskEvent.Kind.ANALYZE, env.toplevel, env.enclClass.sym);
1187 taskListener.started(e);
1188 }
1190 JavaFileObject prev = log.useSource(
1191 env.enclClass.sym.sourcefile != null ?
1192 env.enclClass.sym.sourcefile :
1193 env.toplevel.sourcefile);
1194 try {
1195 attr.attrib(env);
1196 if (errorCount() > 0 && !shouldStop(CompileState.ATTR)) {
1197 //if in fail-over mode, ensure that AST expression nodes
1198 //are correctly initialized (e.g. they have a type/symbol)
1199 attr.postAttr(env);
1200 }
1201 compileStates.put(env, CompileState.ATTR);
1202 }
1203 finally {
1204 log.useSource(prev);
1205 }
1207 return env;
1208 }
1210 /**
1211 * Perform dataflow checks on attributed parse trees.
1212 * These include checks for definite assignment and unreachable statements.
1213 * If any errors occur, an empty list will be returned.
1214 * @returns the list of attributed parse trees
1215 */
1216 public Queue<Env<AttrContext>> flow(Queue<Env<AttrContext>> envs) {
1217 ListBuffer<Env<AttrContext>> results = lb();
1218 for (Env<AttrContext> env: envs) {
1219 flow(env, results);
1220 }
1221 return stopIfError(CompileState.FLOW, results);
1222 }
1224 /**
1225 * Perform dataflow checks on an attributed parse tree.
1226 */
1227 public Queue<Env<AttrContext>> flow(Env<AttrContext> env) {
1228 ListBuffer<Env<AttrContext>> results = lb();
1229 flow(env, results);
1230 return stopIfError(CompileState.FLOW, results);
1231 }
1233 /**
1234 * Perform dataflow checks on an attributed parse tree.
1235 */
1236 protected void flow(Env<AttrContext> env, Queue<Env<AttrContext>> results) {
1237 try {
1238 if (shouldStop(CompileState.FLOW))
1239 return;
1241 if (relax || compileStates.isDone(env, CompileState.FLOW)) {
1242 results.add(env);
1243 return;
1244 }
1246 if (verboseCompilePolicy)
1247 printNote("[flow " + env.enclClass.sym + "]");
1248 JavaFileObject prev = log.useSource(
1249 env.enclClass.sym.sourcefile != null ?
1250 env.enclClass.sym.sourcefile :
1251 env.toplevel.sourcefile);
1252 try {
1253 make.at(Position.FIRSTPOS);
1254 TreeMaker localMake = make.forToplevel(env.toplevel);
1255 flow.analyzeTree(env, localMake);
1256 compileStates.put(env, CompileState.FLOW);
1258 if (shouldStop(CompileState.FLOW))
1259 return;
1261 results.add(env);
1262 }
1263 finally {
1264 log.useSource(prev);
1265 }
1266 }
1267 finally {
1268 if (!taskListener.isEmpty()) {
1269 TaskEvent e = new TaskEvent(TaskEvent.Kind.ANALYZE, env.toplevel, env.enclClass.sym);
1270 taskListener.finished(e);
1271 }
1272 }
1273 }
1275 /**
1276 * Prepare attributed parse trees, in conjunction with their attribution contexts,
1277 * for source or code generation.
1278 * If any errors occur, an empty list will be returned.
1279 * @returns a list containing the classes to be generated
1280 */
1281 public Queue<Pair<Env<AttrContext>, JCClassDecl>> desugar(Queue<Env<AttrContext>> envs) {
1282 ListBuffer<Pair<Env<AttrContext>, JCClassDecl>> results = lb();
1283 for (Env<AttrContext> env: envs)
1284 desugar(env, results);
1285 return stopIfError(CompileState.FLOW, results);
1286 }
1288 HashMap<Env<AttrContext>, Queue<Pair<Env<AttrContext>, JCClassDecl>>> desugaredEnvs =
1289 new HashMap<Env<AttrContext>, Queue<Pair<Env<AttrContext>, JCClassDecl>>>();
1291 /**
1292 * Prepare attributed parse trees, in conjunction with their attribution contexts,
1293 * for source or code generation. If the file was not listed on the command line,
1294 * the current implicitSourcePolicy is taken into account.
1295 * The preparation stops as soon as an error is found.
1296 */
1297 protected void desugar(final Env<AttrContext> env, Queue<Pair<Env<AttrContext>, JCClassDecl>> results) {
1298 if (shouldStop(CompileState.TRANSTYPES))
1299 return;
1301 if (implicitSourcePolicy == ImplicitSourcePolicy.NONE
1302 && !inputFiles.contains(env.toplevel.sourcefile)) {
1303 return;
1304 }
1306 if (compileStates.isDone(env, CompileState.LOWER)) {
1307 results.addAll(desugaredEnvs.get(env));
1308 return;
1309 }
1311 /**
1312 * Ensure that superclasses of C are desugared before C itself. This is
1313 * required for two reasons: (i) as erasure (TransTypes) destroys
1314 * information needed in flow analysis and (ii) as some checks carried
1315 * out during lowering require that all synthetic fields/methods have
1316 * already been added to C and its superclasses.
1317 */
1318 class ScanNested extends TreeScanner {
1319 Set<Env<AttrContext>> dependencies = new LinkedHashSet<Env<AttrContext>>();
1320 @Override
1321 public void visitClassDef(JCClassDecl node) {
1322 Type st = types.supertype(node.sym.type);
1323 if (st.tag == TypeTags.CLASS) {
1324 ClassSymbol c = st.tsym.outermostClass();
1325 Env<AttrContext> stEnv = enter.getEnv(c);
1326 if (stEnv != null && env != stEnv) {
1327 if (dependencies.add(stEnv))
1328 scan(stEnv.tree);
1329 }
1330 }
1331 super.visitClassDef(node);
1332 }
1333 }
1334 ScanNested scanner = new ScanNested();
1335 scanner.scan(env.tree);
1336 for (Env<AttrContext> dep: scanner.dependencies) {
1337 if (!compileStates.isDone(dep, CompileState.FLOW))
1338 desugaredEnvs.put(dep, desugar(flow(attribute(dep))));
1339 }
1341 //We need to check for error another time as more classes might
1342 //have been attributed and analyzed at this stage
1343 if (shouldStop(CompileState.TRANSTYPES))
1344 return;
1346 if (verboseCompilePolicy)
1347 printNote("[desugar " + env.enclClass.sym + "]");
1349 JavaFileObject prev = log.useSource(env.enclClass.sym.sourcefile != null ?
1350 env.enclClass.sym.sourcefile :
1351 env.toplevel.sourcefile);
1352 try {
1353 //save tree prior to rewriting
1354 JCTree untranslated = env.tree;
1356 make.at(Position.FIRSTPOS);
1357 TreeMaker localMake = make.forToplevel(env.toplevel);
1359 if (env.tree instanceof JCCompilationUnit) {
1360 if (!(stubOutput || sourceOutput || printFlat)) {
1361 if (shouldStop(CompileState.LOWER))
1362 return;
1363 List<JCTree> pdef = lower.translateTopLevelClass(env, env.tree, localMake);
1364 if (pdef.head != null) {
1365 Assert.check(pdef.tail.isEmpty());
1366 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, (JCClassDecl)pdef.head));
1367 }
1368 }
1369 return;
1370 }
1372 if (stubOutput) {
1373 //emit stub Java source file, only for compilation
1374 //units enumerated explicitly on the command line
1375 JCClassDecl cdef = (JCClassDecl)env.tree;
1376 if (untranslated instanceof JCClassDecl &&
1377 rootClasses.contains((JCClassDecl)untranslated) &&
1378 ((cdef.mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1379 cdef.sym.packge().getQualifiedName() == names.java_lang)) {
1380 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, removeMethodBodies(cdef)));
1381 }
1382 return;
1383 }
1385 if (shouldStop(CompileState.TRANSTYPES))
1386 return;
1388 env.tree = transTypes.translateTopLevelClass(env.tree, localMake);
1389 compileStates.put(env, CompileState.TRANSTYPES);
1391 if (shouldStop(CompileState.LOWER))
1392 return;
1394 if (sourceOutput) {
1395 //emit standard Java source file, only for compilation
1396 //units enumerated explicitly on the command line
1397 JCClassDecl cdef = (JCClassDecl)env.tree;
1398 if (untranslated instanceof JCClassDecl &&
1399 rootClasses.contains((JCClassDecl)untranslated)) {
1400 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, cdef));
1401 }
1402 return;
1403 }
1405 //translate out inner classes
1406 List<JCTree> cdefs = lower.translateTopLevelClass(env, env.tree, localMake);
1407 compileStates.put(env, CompileState.LOWER);
1409 if (shouldStop(CompileState.LOWER))
1410 return;
1412 //generate code for each class
1413 for (List<JCTree> l = cdefs; l.nonEmpty(); l = l.tail) {
1414 JCClassDecl cdef = (JCClassDecl)l.head;
1415 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, cdef));
1416 }
1417 }
1418 finally {
1419 log.useSource(prev);
1420 }
1422 }
1424 /** Generates the source or class file for a list of classes.
1425 * The decision to generate a source file or a class file is
1426 * based upon the compiler's options.
1427 * Generation stops if an error occurs while writing files.
1428 */
1429 public void generate(Queue<Pair<Env<AttrContext>, JCClassDecl>> queue) {
1430 generate(queue, null);
1431 }
1433 public void generate(Queue<Pair<Env<AttrContext>, JCClassDecl>> queue, Queue<JavaFileObject> results) {
1434 if (shouldStop(CompileState.GENERATE))
1435 return;
1437 boolean usePrintSource = (stubOutput || sourceOutput || printFlat);
1439 for (Pair<Env<AttrContext>, JCClassDecl> x: queue) {
1440 Env<AttrContext> env = x.fst;
1441 JCClassDecl cdef = x.snd;
1443 if (verboseCompilePolicy) {
1444 printNote("[generate "
1445 + (usePrintSource ? " source" : "code")
1446 + " " + cdef.sym + "]");
1447 }
1449 if (!taskListener.isEmpty()) {
1450 TaskEvent e = new TaskEvent(TaskEvent.Kind.GENERATE, env.toplevel, cdef.sym);
1451 taskListener.started(e);
1452 }
1454 JavaFileObject prev = log.useSource(env.enclClass.sym.sourcefile != null ?
1455 env.enclClass.sym.sourcefile :
1456 env.toplevel.sourcefile);
1457 try {
1458 JavaFileObject file;
1459 if (usePrintSource)
1460 file = printSource(env, cdef);
1461 else {
1462 if (fileManager.hasLocation(StandardLocation.NATIVE_HEADER_OUTPUT)
1463 && jniWriter.needsHeader(cdef.sym)) {
1464 jniWriter.write(cdef.sym);
1465 }
1466 file = genCode(env, cdef);
1467 }
1468 if (results != null && file != null)
1469 results.add(file);
1470 } catch (IOException ex) {
1471 log.error(cdef.pos(), "class.cant.write",
1472 cdef.sym, ex.getMessage());
1473 return;
1474 } finally {
1475 log.useSource(prev);
1476 }
1478 if (!taskListener.isEmpty()) {
1479 TaskEvent e = new TaskEvent(TaskEvent.Kind.GENERATE, env.toplevel, cdef.sym);
1480 taskListener.finished(e);
1481 }
1482 }
1483 }
1485 // where
1486 Map<JCCompilationUnit, Queue<Env<AttrContext>>> groupByFile(Queue<Env<AttrContext>> envs) {
1487 // use a LinkedHashMap to preserve the order of the original list as much as possible
1488 Map<JCCompilationUnit, Queue<Env<AttrContext>>> map = new LinkedHashMap<JCCompilationUnit, Queue<Env<AttrContext>>>();
1489 for (Env<AttrContext> env: envs) {
1490 Queue<Env<AttrContext>> sublist = map.get(env.toplevel);
1491 if (sublist == null) {
1492 sublist = new ListBuffer<Env<AttrContext>>();
1493 map.put(env.toplevel, sublist);
1494 }
1495 sublist.add(env);
1496 }
1497 return map;
1498 }
1500 JCClassDecl removeMethodBodies(JCClassDecl cdef) {
1501 final boolean isInterface = (cdef.mods.flags & Flags.INTERFACE) != 0;
1502 class MethodBodyRemover extends TreeTranslator {
1503 @Override
1504 public void visitMethodDef(JCMethodDecl tree) {
1505 tree.mods.flags &= ~Flags.SYNCHRONIZED;
1506 for (JCVariableDecl vd : tree.params)
1507 vd.mods.flags &= ~Flags.FINAL;
1508 tree.body = null;
1509 super.visitMethodDef(tree);
1510 }
1511 @Override
1512 public void visitVarDef(JCVariableDecl tree) {
1513 if (tree.init != null && tree.init.type.constValue() == null)
1514 tree.init = null;
1515 super.visitVarDef(tree);
1516 }
1517 @Override
1518 public void visitClassDef(JCClassDecl tree) {
1519 ListBuffer<JCTree> newdefs = lb();
1520 for (List<JCTree> it = tree.defs; it.tail != null; it = it.tail) {
1521 JCTree t = it.head;
1522 switch (t.getTag()) {
1523 case CLASSDEF:
1524 if (isInterface ||
1525 (((JCClassDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1526 (((JCClassDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCClassDecl) t).sym.packge().getQualifiedName() == names.java_lang)
1527 newdefs.append(t);
1528 break;
1529 case METHODDEF:
1530 if (isInterface ||
1531 (((JCMethodDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1532 ((JCMethodDecl) t).sym.name == names.init ||
1533 (((JCMethodDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCMethodDecl) t).sym.packge().getQualifiedName() == names.java_lang)
1534 newdefs.append(t);
1535 break;
1536 case VARDEF:
1537 if (isInterface || (((JCVariableDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1538 (((JCVariableDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCVariableDecl) t).sym.packge().getQualifiedName() == names.java_lang)
1539 newdefs.append(t);
1540 break;
1541 default:
1542 break;
1543 }
1544 }
1545 tree.defs = newdefs.toList();
1546 super.visitClassDef(tree);
1547 }
1548 }
1549 MethodBodyRemover r = new MethodBodyRemover();
1550 return r.translate(cdef);
1551 }
1553 public void reportDeferredDiagnostics() {
1554 if (errorCount() == 0
1555 && annotationProcessingOccurred
1556 && implicitSourceFilesRead
1557 && implicitSourcePolicy == ImplicitSourcePolicy.UNSET) {
1558 if (explicitAnnotationProcessingRequested())
1559 log.warning("proc.use.implicit");
1560 else
1561 log.warning("proc.use.proc.or.implicit");
1562 }
1563 chk.reportDeferredDiagnostics();
1564 }
1566 /** Close the compiler, flushing the logs
1567 */
1568 public void close() {
1569 close(true);
1570 }
1572 public void close(boolean disposeNames) {
1573 rootClasses = null;
1574 reader = null;
1575 make = null;
1576 writer = null;
1577 enter = null;
1578 if (todo != null)
1579 todo.clear();
1580 todo = null;
1581 parserFactory = null;
1582 syms = null;
1583 source = null;
1584 attr = null;
1585 chk = null;
1586 gen = null;
1587 flow = null;
1588 transTypes = null;
1589 lower = null;
1590 annotate = null;
1591 types = null;
1593 log.flush();
1594 try {
1595 fileManager.flush();
1596 } catch (IOException e) {
1597 throw new Abort(e);
1598 } finally {
1599 if (names != null && disposeNames)
1600 names.dispose();
1601 names = null;
1603 for (Closeable c: closeables) {
1604 try {
1605 c.close();
1606 } catch (IOException e) {
1607 // When javac uses JDK 7 as a baseline, this code would be
1608 // better written to set any/all exceptions from all the
1609 // Closeables as suppressed exceptions on the FatalError
1610 // that is thrown.
1611 JCDiagnostic msg = diagFactory.fragment("fatal.err.cant.close");
1612 throw new FatalError(msg, e);
1613 }
1614 }
1615 }
1616 }
1618 protected void printNote(String lines) {
1619 log.printRawLines(Log.WriterKind.NOTICE, lines);
1620 }
1622 /** Print numbers of errors and warnings.
1623 */
1624 protected void printCount(String kind, int count) {
1625 if (count != 0) {
1626 String key;
1627 if (count == 1)
1628 key = "count." + kind;
1629 else
1630 key = "count." + kind + ".plural";
1631 log.printLines(WriterKind.ERROR, key, String.valueOf(count));
1632 log.flush(Log.WriterKind.ERROR);
1633 }
1634 }
1636 private static long now() {
1637 return System.currentTimeMillis();
1638 }
1640 private static long elapsed(long then) {
1641 return now() - then;
1642 }
1644 public void initRound(JavaCompiler prev) {
1645 genEndPos = prev.genEndPos;
1646 keepComments = prev.keepComments;
1647 start_msec = prev.start_msec;
1648 hasBeenUsed = true;
1649 closeables = prev.closeables;
1650 prev.closeables = List.nil();
1651 }
1653 public static void enableLogging() {
1654 Logger logger = Logger.getLogger(com.sun.tools.javac.Main.class.getPackage().getName());
1655 logger.setLevel(Level.ALL);
1656 for (Handler h : logger.getParent().getHandlers()) {
1657 h.setLevel(Level.ALL);
1658 }
1660 }
1661 }