Tue, 08 Nov 2011 17:06:58 -0800
7108669: cleanup Log methods for direct printing to streams
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.code.*;
52 import com.sun.tools.javac.code.Lint.LintCategory;
53 import com.sun.tools.javac.code.Symbol.*;
54 import com.sun.tools.javac.comp.*;
55 import com.sun.tools.javac.file.JavacFileManager;
56 import com.sun.tools.javac.jvm.*;
57 import com.sun.tools.javac.parser.*;
58 import com.sun.tools.javac.processing.*;
59 import com.sun.tools.javac.tree.*;
60 import com.sun.tools.javac.tree.JCTree.*;
61 import com.sun.tools.javac.util.*;
62 import com.sun.tools.javac.util.Log.WriterKind;
64 import static javax.tools.StandardLocation.CLASS_OUTPUT;
65 import static com.sun.tools.javac.main.OptionName.*;
66 import static com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag.*;
67 import static com.sun.tools.javac.util.ListBuffer.lb;
70 /** This class could be the main entry point for GJC when GJC is used as a
71 * component in a larger software system. It provides operations to
72 * construct a new compiler, and to run a new compiler on a set of source
73 * files.
74 *
75 * <p><b>This is NOT part of any supported API.
76 * If you write code that depends on this, you do so at your own risk.
77 * This code and its internal interfaces are subject to change or
78 * deletion without notice.</b>
79 */
80 public class JavaCompiler implements ClassReader.SourceCompleter {
81 /** The context key for the compiler. */
82 protected static final Context.Key<JavaCompiler> compilerKey =
83 new Context.Key<JavaCompiler>();
85 /** Get the JavaCompiler instance for this context. */
86 public static JavaCompiler instance(Context context) {
87 JavaCompiler instance = context.get(compilerKey);
88 if (instance == null)
89 instance = new JavaCompiler(context);
90 return instance;
91 }
93 /** The current version number as a string.
94 */
95 public static String version() {
96 return version("release"); // mm.nn.oo[-milestone]
97 }
99 /** The current full version number as a string.
100 */
101 public static String fullVersion() {
102 return version("full"); // mm.mm.oo[-milestone]-build
103 }
105 private static final String versionRBName = "com.sun.tools.javac.resources.version";
106 private static ResourceBundle versionRB;
108 private static String version(String key) {
109 if (versionRB == null) {
110 try {
111 versionRB = ResourceBundle.getBundle(versionRBName);
112 } catch (MissingResourceException e) {
113 return Log.getLocalizedString("version.not.available");
114 }
115 }
116 try {
117 return versionRB.getString(key);
118 }
119 catch (MissingResourceException e) {
120 return Log.getLocalizedString("version.not.available");
121 }
122 }
124 /**
125 * Control how the compiler's latter phases (attr, flow, desugar, generate)
126 * are connected. Each individual file is processed by each phase in turn,
127 * but with different compile policies, you can control the order in which
128 * each class is processed through its next phase.
129 *
130 * <p>Generally speaking, the compiler will "fail fast" in the face of
131 * errors, although not aggressively so. flow, desugar, etc become no-ops
132 * once any errors have occurred. No attempt is currently made to determine
133 * if it might be safe to process a class through its next phase because
134 * it does not depend on any unrelated errors that might have occurred.
135 */
136 protected static enum CompilePolicy {
137 /**
138 * Just attribute the parse trees.
139 */
140 ATTR_ONLY,
142 /**
143 * Just attribute and do flow analysis on the parse trees.
144 * This should catch most user errors.
145 */
146 CHECK_ONLY,
148 /**
149 * Attribute everything, then do flow analysis for everything,
150 * then desugar everything, and only then generate output.
151 * This means no output will be generated if there are any
152 * errors in any classes.
153 */
154 SIMPLE,
156 /**
157 * Groups the classes for each source file together, then process
158 * each group in a manner equivalent to the {@code SIMPLE} policy.
159 * This means no output will be generated if there are any
160 * errors in any of the classes in a source file.
161 */
162 BY_FILE,
164 /**
165 * Completely process each entry on the todo list in turn.
166 * -- this is the same for 1.5.
167 * Means output might be generated for some classes in a compilation unit
168 * and not others.
169 */
170 BY_TODO;
172 static CompilePolicy decode(String option) {
173 if (option == null)
174 return DEFAULT_COMPILE_POLICY;
175 else if (option.equals("attr"))
176 return ATTR_ONLY;
177 else if (option.equals("check"))
178 return CHECK_ONLY;
179 else if (option.equals("simple"))
180 return SIMPLE;
181 else if (option.equals("byfile"))
182 return BY_FILE;
183 else if (option.equals("bytodo"))
184 return BY_TODO;
185 else
186 return DEFAULT_COMPILE_POLICY;
187 }
188 }
190 private static CompilePolicy DEFAULT_COMPILE_POLICY = CompilePolicy.BY_TODO;
192 protected static enum ImplicitSourcePolicy {
193 /** Don't generate or process implicitly read source files. */
194 NONE,
195 /** Generate classes for implicitly read source files. */
196 CLASS,
197 /** Like CLASS, but generate warnings if annotation processing occurs */
198 UNSET;
200 static ImplicitSourcePolicy decode(String option) {
201 if (option == null)
202 return UNSET;
203 else if (option.equals("none"))
204 return NONE;
205 else if (option.equals("class"))
206 return CLASS;
207 else
208 return UNSET;
209 }
210 }
212 /** The log to be used for error reporting.
213 */
214 public Log log;
216 /** Factory for creating diagnostic objects
217 */
218 JCDiagnostic.Factory diagFactory;
220 /** The tree factory module.
221 */
222 protected TreeMaker make;
224 /** The class reader.
225 */
226 protected ClassReader reader;
228 /** The class writer.
229 */
230 protected ClassWriter writer;
232 /** The module for the symbol table entry phases.
233 */
234 protected Enter enter;
236 /** The symbol table.
237 */
238 protected Symtab syms;
240 /** The language version.
241 */
242 protected Source source;
244 /** The module for code generation.
245 */
246 protected Gen gen;
248 /** The name table.
249 */
250 protected Names names;
252 /** The attributor.
253 */
254 protected Attr attr;
256 /** The attributor.
257 */
258 protected Check chk;
260 /** The flow analyzer.
261 */
262 protected Flow flow;
264 /** The type eraser.
265 */
266 protected TransTypes transTypes;
268 /** The syntactic sugar desweetener.
269 */
270 protected Lower lower;
272 /** The annotation annotator.
273 */
274 protected Annotate annotate;
276 /** Force a completion failure on this name
277 */
278 protected final Name completionFailureName;
280 /** Type utilities.
281 */
282 protected Types types;
284 /** Access to file objects.
285 */
286 protected JavaFileManager fileManager;
288 /** Factory for parsers.
289 */
290 protected ParserFactory parserFactory;
292 /** Optional listener for progress events
293 */
294 protected TaskListener taskListener;
296 /**
297 * Annotation processing may require and provide a new instance
298 * of the compiler to be used for the analyze and generate phases.
299 */
300 protected JavaCompiler delegateCompiler;
302 /**
303 * Command line options.
304 */
305 protected Options options;
307 protected Context context;
309 /**
310 * Flag set if any annotation processing occurred.
311 **/
312 protected boolean annotationProcessingOccurred;
314 /**
315 * Flag set if any implicit source files read.
316 **/
317 protected boolean implicitSourceFilesRead;
319 /** Construct a new compiler using a shared context.
320 */
321 public JavaCompiler(Context context) {
322 this.context = context;
323 context.put(compilerKey, this);
325 // if fileManager not already set, register the JavacFileManager to be used
326 if (context.get(JavaFileManager.class) == null)
327 JavacFileManager.preRegister(context);
329 names = Names.instance(context);
330 log = Log.instance(context);
331 diagFactory = JCDiagnostic.Factory.instance(context);
332 reader = ClassReader.instance(context);
333 make = TreeMaker.instance(context);
334 writer = ClassWriter.instance(context);
335 enter = Enter.instance(context);
336 todo = Todo.instance(context);
338 fileManager = context.get(JavaFileManager.class);
339 parserFactory = ParserFactory.instance(context);
341 try {
342 // catch completion problems with predefineds
343 syms = Symtab.instance(context);
344 } catch (CompletionFailure ex) {
345 // inlined Check.completionError as it is not initialized yet
346 log.error("cant.access", ex.sym, ex.getDetailValue());
347 if (ex instanceof ClassReader.BadClassFile)
348 throw new Abort();
349 }
350 source = Source.instance(context);
351 attr = Attr.instance(context);
352 chk = Check.instance(context);
353 gen = Gen.instance(context);
354 flow = Flow.instance(context);
355 transTypes = TransTypes.instance(context);
356 lower = Lower.instance(context);
357 annotate = Annotate.instance(context);
358 types = Types.instance(context);
359 taskListener = context.get(TaskListener.class);
361 reader.sourceCompleter = this;
363 options = Options.instance(context);
365 verbose = options.isSet(VERBOSE);
366 sourceOutput = options.isSet(PRINTSOURCE); // used to be -s
367 stubOutput = options.isSet("-stubs");
368 relax = options.isSet("-relax");
369 printFlat = options.isSet("-printflat");
370 attrParseOnly = options.isSet("-attrparseonly");
371 encoding = options.get(ENCODING);
372 lineDebugInfo = options.isUnset(G_CUSTOM) ||
373 options.isSet(G_CUSTOM, "lines");
374 genEndPos = options.isSet(XJCOV) ||
375 context.get(DiagnosticListener.class) != null;
376 devVerbose = options.isSet("dev");
377 processPcks = options.isSet("process.packages");
378 werror = options.isSet(WERROR);
380 if (source.compareTo(Source.DEFAULT) < 0) {
381 if (options.isUnset(XLINT_CUSTOM, "-" + LintCategory.OPTIONS.option)) {
382 if (fileManager instanceof BaseFileManager) {
383 if (((BaseFileManager) fileManager).isDefaultBootClassPath())
384 log.warning(LintCategory.OPTIONS, "source.no.bootclasspath", source.name);
385 }
386 }
387 }
389 verboseCompilePolicy = options.isSet("verboseCompilePolicy");
391 if (attrParseOnly)
392 compilePolicy = CompilePolicy.ATTR_ONLY;
393 else
394 compilePolicy = CompilePolicy.decode(options.get("compilePolicy"));
396 implicitSourcePolicy = ImplicitSourcePolicy.decode(options.get("-implicit"));
398 completionFailureName =
399 options.isSet("failcomplete")
400 ? names.fromString(options.get("failcomplete"))
401 : null;
403 shouldStopPolicy =
404 options.isSet("shouldStopPolicy")
405 ? CompileState.valueOf(options.get("shouldStopPolicy"))
406 : null;
407 if (options.isUnset("oldDiags"))
408 log.setDiagnosticFormatter(RichDiagnosticFormatter.instance(context));
409 }
411 /* Switches:
412 */
414 /** Verbose output.
415 */
416 public boolean verbose;
418 /** Emit plain Java source files rather than class files.
419 */
420 public boolean sourceOutput;
422 /** Emit stub source files rather than class files.
423 */
424 public boolean stubOutput;
426 /** Generate attributed parse tree only.
427 */
428 public boolean attrParseOnly;
430 /** Switch: relax some constraints for producing the jsr14 prototype.
431 */
432 boolean relax;
434 /** Debug switch: Emit Java sources after inner class flattening.
435 */
436 public boolean printFlat;
438 /** The encoding to be used for source input.
439 */
440 public String encoding;
442 /** Generate code with the LineNumberTable attribute for debugging
443 */
444 public boolean lineDebugInfo;
446 /** Switch: should we store the ending positions?
447 */
448 public boolean genEndPos;
450 /** Switch: should we debug ignored exceptions
451 */
452 protected boolean devVerbose;
454 /** Switch: should we (annotation) process packages as well
455 */
456 protected boolean processPcks;
458 /** Switch: treat warnings as errors
459 */
460 protected boolean werror;
462 /** Switch: is annotation processing requested explitly via
463 * CompilationTask.setProcessors?
464 */
465 protected boolean explicitAnnotationProcessingRequested = false;
467 /**
468 * The policy for the order in which to perform the compilation
469 */
470 protected CompilePolicy compilePolicy;
472 /**
473 * The policy for what to do with implicitly read source files
474 */
475 protected ImplicitSourcePolicy implicitSourcePolicy;
477 /**
478 * Report activity related to compilePolicy
479 */
480 public boolean verboseCompilePolicy;
482 /**
483 * Policy of how far to continue processing. null means until first
484 * error.
485 */
486 public CompileState shouldStopPolicy;
488 /** A queue of all as yet unattributed classes.
489 */
490 public Todo todo;
492 /** A list of items to be closed when the compilation is complete.
493 */
494 public List<Closeable> closeables = List.nil();
496 /** Ordered list of compiler phases for each compilation unit. */
497 public enum CompileState {
498 PARSE(1),
499 ENTER(2),
500 PROCESS(3),
501 ATTR(4),
502 FLOW(5),
503 TRANSTYPES(6),
504 LOWER(7),
505 GENERATE(8);
506 CompileState(int value) {
507 this.value = value;
508 }
509 boolean isDone(CompileState other) {
510 return value >= other.value;
511 }
512 private int value;
513 };
514 /** Partial map to record which compiler phases have been executed
515 * for each compilation unit. Used for ATTR and FLOW phases.
516 */
517 protected class CompileStates extends HashMap<Env<AttrContext>,CompileState> {
518 private static final long serialVersionUID = 1812267524140424433L;
519 boolean isDone(Env<AttrContext> env, CompileState cs) {
520 CompileState ecs = get(env);
521 return ecs != null && ecs.isDone(cs);
522 }
523 }
524 private CompileStates compileStates = new CompileStates();
526 /** The set of currently compiled inputfiles, needed to ensure
527 * we don't accidentally overwrite an input file when -s is set.
528 * initialized by `compile'.
529 */
530 protected Set<JavaFileObject> inputFiles = new HashSet<JavaFileObject>();
532 protected boolean shouldStop(CompileState cs) {
533 if (shouldStopPolicy == null)
534 return (errorCount() > 0 || unrecoverableError());
535 else
536 return cs.ordinal() > shouldStopPolicy.ordinal();
537 }
539 /** The number of errors reported so far.
540 */
541 public int errorCount() {
542 if (delegateCompiler != null && delegateCompiler != this)
543 return delegateCompiler.errorCount();
544 else {
545 if (werror && log.nerrors == 0 && log.nwarnings > 0) {
546 log.error("warnings.and.werror");
547 }
548 }
549 return log.nerrors;
550 }
552 protected final <T> Queue<T> stopIfError(CompileState cs, Queue<T> queue) {
553 return shouldStop(cs) ? ListBuffer.<T>lb() : queue;
554 }
556 protected final <T> List<T> stopIfError(CompileState cs, List<T> list) {
557 return shouldStop(cs) ? List.<T>nil() : list;
558 }
560 /** The number of warnings reported so far.
561 */
562 public int warningCount() {
563 if (delegateCompiler != null && delegateCompiler != this)
564 return delegateCompiler.warningCount();
565 else
566 return log.nwarnings;
567 }
569 /** Try to open input stream with given name.
570 * Report an error if this fails.
571 * @param filename The file name of the input stream to be opened.
572 */
573 public CharSequence readSource(JavaFileObject filename) {
574 try {
575 inputFiles.add(filename);
576 return filename.getCharContent(false);
577 } catch (IOException e) {
578 log.error("error.reading.file", filename, JavacFileManager.getMessage(e));
579 return null;
580 }
581 }
583 /** Parse contents of input stream.
584 * @param filename The name of the file from which input stream comes.
585 * @param input The input stream to be parsed.
586 */
587 protected JCCompilationUnit parse(JavaFileObject filename, CharSequence content) {
588 long msec = now();
589 JCCompilationUnit tree = make.TopLevel(List.<JCTree.JCAnnotation>nil(),
590 null, List.<JCTree>nil());
591 if (content != null) {
592 if (verbose) {
593 log.printVerbose("parsing.started", filename);
594 }
595 if (taskListener != null) {
596 TaskEvent e = new TaskEvent(TaskEvent.Kind.PARSE, filename);
597 taskListener.started(e);
598 }
599 Parser parser = parserFactory.newParser(content, keepComments(), genEndPos, lineDebugInfo);
600 tree = parser.parseCompilationUnit();
601 if (verbose) {
602 log.printVerbose("parsing.done", Long.toString(elapsed(msec)));
603 }
604 }
606 tree.sourcefile = filename;
608 if (content != null && taskListener != null) {
609 TaskEvent e = new TaskEvent(TaskEvent.Kind.PARSE, tree);
610 taskListener.finished(e);
611 }
613 return tree;
614 }
615 // where
616 public boolean keepComments = false;
617 protected boolean keepComments() {
618 return keepComments || sourceOutput || stubOutput;
619 }
622 /** Parse contents of file.
623 * @param filename The name of the file to be parsed.
624 */
625 @Deprecated
626 public JCTree.JCCompilationUnit parse(String filename) {
627 JavacFileManager fm = (JavacFileManager)fileManager;
628 return parse(fm.getJavaFileObjectsFromStrings(List.of(filename)).iterator().next());
629 }
631 /** Parse contents of file.
632 * @param filename The name of the file to be parsed.
633 */
634 public JCTree.JCCompilationUnit parse(JavaFileObject filename) {
635 JavaFileObject prev = log.useSource(filename);
636 try {
637 JCTree.JCCompilationUnit t = parse(filename, readSource(filename));
638 if (t.endPositions != null)
639 log.setEndPosTable(filename, t.endPositions);
640 return t;
641 } finally {
642 log.useSource(prev);
643 }
644 }
646 /** Resolve an identifier which may be the binary name of a class or
647 * the Java name of a class or package.
648 * @param name The name to resolve
649 */
650 public Symbol resolveBinaryNameOrIdent(String name) {
651 try {
652 Name flatname = names.fromString(name.replace("/", "."));
653 return reader.loadClass(flatname);
654 } catch (CompletionFailure ignore) {
655 return resolveIdent(name);
656 }
657 }
659 /** Resolve an identifier.
660 * @param name The identifier to resolve
661 */
662 public Symbol resolveIdent(String name) {
663 if (name.equals(""))
664 return syms.errSymbol;
665 JavaFileObject prev = log.useSource(null);
666 try {
667 JCExpression tree = null;
668 for (String s : name.split("\\.", -1)) {
669 if (!SourceVersion.isIdentifier(s)) // TODO: check for keywords
670 return syms.errSymbol;
671 tree = (tree == null) ? make.Ident(names.fromString(s))
672 : make.Select(tree, names.fromString(s));
673 }
674 JCCompilationUnit toplevel =
675 make.TopLevel(List.<JCTree.JCAnnotation>nil(), null, List.<JCTree>nil());
676 toplevel.packge = syms.unnamedPackage;
677 return attr.attribIdent(tree, toplevel);
678 } finally {
679 log.useSource(prev);
680 }
681 }
683 /** Emit plain Java source for a class.
684 * @param env The attribution environment of the outermost class
685 * containing this class.
686 * @param cdef The class definition to be printed.
687 */
688 JavaFileObject printSource(Env<AttrContext> env, JCClassDecl cdef) throws IOException {
689 JavaFileObject outFile
690 = fileManager.getJavaFileForOutput(CLASS_OUTPUT,
691 cdef.sym.flatname.toString(),
692 JavaFileObject.Kind.SOURCE,
693 null);
694 if (inputFiles.contains(outFile)) {
695 log.error(cdef.pos(), "source.cant.overwrite.input.file", outFile);
696 return null;
697 } else {
698 BufferedWriter out = new BufferedWriter(outFile.openWriter());
699 try {
700 new Pretty(out, true).printUnit(env.toplevel, cdef);
701 if (verbose)
702 log.printVerbose("wrote.file", outFile);
703 } finally {
704 out.close();
705 }
706 return outFile;
707 }
708 }
710 /** Generate code and emit a class file for a given class
711 * @param env The attribution environment of the outermost class
712 * containing this class.
713 * @param cdef The class definition from which code is generated.
714 */
715 JavaFileObject genCode(Env<AttrContext> env, JCClassDecl cdef) throws IOException {
716 try {
717 if (gen.genClass(env, cdef) && (errorCount() == 0))
718 return writer.writeClass(cdef.sym);
719 } catch (ClassWriter.PoolOverflow ex) {
720 log.error(cdef.pos(), "limit.pool");
721 } catch (ClassWriter.StringOverflow ex) {
722 log.error(cdef.pos(), "limit.string.overflow",
723 ex.value.substring(0, 20));
724 } catch (CompletionFailure ex) {
725 chk.completionError(cdef.pos(), ex);
726 }
727 return null;
728 }
730 /** Complete compiling a source file that has been accessed
731 * by the class file reader.
732 * @param c The class the source file of which needs to be compiled.
733 * @param filename The name of the source file.
734 * @param f An input stream that reads the source file.
735 */
736 public void complete(ClassSymbol c) throws CompletionFailure {
737 // System.err.println("completing " + c);//DEBUG
738 if (completionFailureName == c.fullname) {
739 throw new CompletionFailure(c, "user-selected completion failure by class name");
740 }
741 JCCompilationUnit tree;
742 JavaFileObject filename = c.classfile;
743 JavaFileObject prev = log.useSource(filename);
745 try {
746 tree = parse(filename, filename.getCharContent(false));
747 } catch (IOException e) {
748 log.error("error.reading.file", filename, JavacFileManager.getMessage(e));
749 tree = make.TopLevel(List.<JCTree.JCAnnotation>nil(), null, List.<JCTree>nil());
750 } finally {
751 log.useSource(prev);
752 }
754 if (taskListener != null) {
755 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, tree);
756 taskListener.started(e);
757 }
759 enter.complete(List.of(tree), c);
761 if (taskListener != null) {
762 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, tree);
763 taskListener.finished(e);
764 }
766 if (enter.getEnv(c) == null) {
767 boolean isPkgInfo =
768 tree.sourcefile.isNameCompatible("package-info",
769 JavaFileObject.Kind.SOURCE);
770 if (isPkgInfo) {
771 if (enter.getEnv(tree.packge) == null) {
772 JCDiagnostic diag =
773 diagFactory.fragment("file.does.not.contain.package",
774 c.location());
775 throw reader.new BadClassFile(c, filename, diag);
776 }
777 } else {
778 JCDiagnostic diag =
779 diagFactory.fragment("file.doesnt.contain.class",
780 c.getQualifiedName());
781 throw reader.new BadClassFile(c, filename, diag);
782 }
783 }
785 implicitSourceFilesRead = true;
786 }
788 /** Track when the JavaCompiler has been used to compile something. */
789 private boolean hasBeenUsed = false;
790 private long start_msec = 0;
791 public long elapsed_msec = 0;
793 public void compile(List<JavaFileObject> sourceFileObject)
794 throws Throwable {
795 compile(sourceFileObject, List.<String>nil(), null);
796 }
798 /**
799 * Main method: compile a list of files, return all compiled classes
800 *
801 * @param sourceFileObjects file objects to be compiled
802 * @param classnames class names to process for annotations
803 * @param processors user provided annotation processors to bypass
804 * discovery, {@code null} means that no processors were provided
805 */
806 public void compile(List<JavaFileObject> sourceFileObjects,
807 List<String> classnames,
808 Iterable<? extends Processor> processors)
809 {
810 if (processors != null && processors.iterator().hasNext())
811 explicitAnnotationProcessingRequested = true;
812 // as a JavaCompiler can only be used once, throw an exception if
813 // it has been used before.
814 if (hasBeenUsed)
815 throw new AssertionError("attempt to reuse JavaCompiler");
816 hasBeenUsed = true;
818 // forcibly set the equivalent of -Xlint:-options, so that no further
819 // warnings about command line options are generated from this point on
820 options.put(XLINT_CUSTOM + "-" + LintCategory.OPTIONS.option, "true");
821 options.remove(XLINT_CUSTOM + LintCategory.OPTIONS.option);
823 start_msec = now();
825 try {
826 initProcessAnnotations(processors);
828 // These method calls must be chained to avoid memory leaks
829 delegateCompiler =
830 processAnnotations(
831 enterTrees(stopIfError(CompileState.PARSE, parseFiles(sourceFileObjects))),
832 classnames);
834 delegateCompiler.compile2();
835 delegateCompiler.close();
836 elapsed_msec = delegateCompiler.elapsed_msec;
837 } catch (Abort ex) {
838 if (devVerbose)
839 ex.printStackTrace(System.err);
840 } finally {
841 if (procEnvImpl != null)
842 procEnvImpl.close();
843 }
844 }
846 /**
847 * The phases following annotation processing: attribution,
848 * desugar, and finally code generation.
849 */
850 private void compile2() {
851 try {
852 switch (compilePolicy) {
853 case ATTR_ONLY:
854 attribute(todo);
855 break;
857 case CHECK_ONLY:
858 flow(attribute(todo));
859 break;
861 case SIMPLE:
862 generate(desugar(flow(attribute(todo))));
863 break;
865 case BY_FILE: {
866 Queue<Queue<Env<AttrContext>>> q = todo.groupByFile();
867 while (!q.isEmpty() && !shouldStop(CompileState.ATTR)) {
868 generate(desugar(flow(attribute(q.remove()))));
869 }
870 }
871 break;
873 case BY_TODO:
874 while (!todo.isEmpty())
875 generate(desugar(flow(attribute(todo.remove()))));
876 break;
878 default:
879 Assert.error("unknown compile policy");
880 }
881 } catch (Abort ex) {
882 if (devVerbose)
883 ex.printStackTrace(System.err);
884 }
886 if (verbose) {
887 elapsed_msec = elapsed(start_msec);
888 log.printVerbose("total", Long.toString(elapsed_msec));
889 }
891 reportDeferredDiagnostics();
893 if (!log.hasDiagnosticListener()) {
894 printCount("error", errorCount());
895 printCount("warn", warningCount());
896 }
897 }
899 private List<JCClassDecl> rootClasses;
901 /**
902 * Parses a list of files.
903 */
904 public List<JCCompilationUnit> parseFiles(Iterable<JavaFileObject> fileObjects) {
905 if (shouldStop(CompileState.PARSE))
906 return List.nil();
908 //parse all files
909 ListBuffer<JCCompilationUnit> trees = lb();
910 Set<JavaFileObject> filesSoFar = new HashSet<JavaFileObject>();
911 for (JavaFileObject fileObject : fileObjects) {
912 if (!filesSoFar.contains(fileObject)) {
913 filesSoFar.add(fileObject);
914 trees.append(parse(fileObject));
915 }
916 }
917 return trees.toList();
918 }
920 /**
921 * Enter the symbols found in a list of parse trees.
922 * As a side-effect, this puts elements on the "todo" list.
923 * Also stores a list of all top level classes in rootClasses.
924 */
925 public List<JCCompilationUnit> enterTrees(List<JCCompilationUnit> roots) {
926 //enter symbols for all files
927 if (taskListener != null) {
928 for (JCCompilationUnit unit: roots) {
929 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, unit);
930 taskListener.started(e);
931 }
932 }
934 enter.main(roots);
936 if (taskListener != null) {
937 for (JCCompilationUnit unit: roots) {
938 TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, unit);
939 taskListener.finished(e);
940 }
941 }
943 //If generating source, remember the classes declared in
944 //the original compilation units listed on the command line.
945 if (sourceOutput || stubOutput) {
946 ListBuffer<JCClassDecl> cdefs = lb();
947 for (JCCompilationUnit unit : roots) {
948 for (List<JCTree> defs = unit.defs;
949 defs.nonEmpty();
950 defs = defs.tail) {
951 if (defs.head instanceof JCClassDecl)
952 cdefs.append((JCClassDecl)defs.head);
953 }
954 }
955 rootClasses = cdefs.toList();
956 }
958 // Ensure the input files have been recorded. Although this is normally
959 // done by readSource, it may not have been done if the trees were read
960 // in a prior round of annotation processing, and the trees have been
961 // cleaned and are being reused.
962 for (JCCompilationUnit unit : roots) {
963 inputFiles.add(unit.sourcefile);
964 }
966 return roots;
967 }
969 /**
970 * Set to true to enable skeleton annotation processing code.
971 * Currently, we assume this variable will be replaced more
972 * advanced logic to figure out if annotation processing is
973 * needed.
974 */
975 boolean processAnnotations = false;
977 /**
978 * Object to handle annotation processing.
979 */
980 private JavacProcessingEnvironment procEnvImpl = null;
982 /**
983 * Check if we should process annotations.
984 * If so, and if no scanner is yet registered, then set up the DocCommentScanner
985 * to catch doc comments, and set keepComments so the parser records them in
986 * the compilation unit.
987 *
988 * @param processors user provided annotation processors to bypass
989 * discovery, {@code null} means that no processors were provided
990 */
991 public void initProcessAnnotations(Iterable<? extends Processor> processors) {
992 // Process annotations if processing is not disabled and there
993 // is at least one Processor available.
994 if (options.isSet(PROC, "none")) {
995 processAnnotations = false;
996 } else if (procEnvImpl == null) {
997 procEnvImpl = new JavacProcessingEnvironment(context, processors);
998 processAnnotations = procEnvImpl.atLeastOneProcessor();
1000 if (processAnnotations) {
1001 options.put("save-parameter-names", "save-parameter-names");
1002 reader.saveParameterNames = true;
1003 keepComments = true;
1004 genEndPos = true;
1005 if (taskListener != null)
1006 taskListener.started(new TaskEvent(TaskEvent.Kind.ANNOTATION_PROCESSING));
1007 log.deferDiagnostics = true;
1008 } else { // free resources
1009 procEnvImpl.close();
1010 }
1011 }
1012 }
1014 // TODO: called by JavacTaskImpl
1015 public JavaCompiler processAnnotations(List<JCCompilationUnit> roots) {
1016 return processAnnotations(roots, List.<String>nil());
1017 }
1019 /**
1020 * Process any anotations found in the specifed compilation units.
1021 * @param roots a list of compilation units
1022 * @return an instance of the compiler in which to complete the compilation
1023 */
1024 // Implementation note: when this method is called, log.deferredDiagnostics
1025 // will have been set true by initProcessAnnotations, meaning that any diagnostics
1026 // that are reported will go into the log.deferredDiagnostics queue.
1027 // By the time this method exits, log.deferDiagnostics must be set back to false,
1028 // and all deferredDiagnostics must have been handled: i.e. either reported
1029 // or determined to be transient, and therefore suppressed.
1030 public JavaCompiler processAnnotations(List<JCCompilationUnit> roots,
1031 List<String> classnames) {
1032 if (shouldStop(CompileState.PROCESS)) {
1033 // Errors were encountered.
1034 // Unless all the errors are resolve errors, the errors were parse errors
1035 // or other errors during enter which cannot be fixed by running
1036 // any annotation processors.
1037 if (unrecoverableError()) {
1038 log.reportDeferredDiagnostics();
1039 return this;
1040 }
1041 }
1043 // ASSERT: processAnnotations and procEnvImpl should have been set up by
1044 // by initProcessAnnotations
1046 // NOTE: The !classnames.isEmpty() checks should be refactored to Main.
1048 if (!processAnnotations) {
1049 // If there are no annotation processors present, and
1050 // annotation processing is to occur with compilation,
1051 // emit a warning.
1052 if (options.isSet(PROC, "only")) {
1053 log.warning("proc.proc-only.requested.no.procs");
1054 todo.clear();
1055 }
1056 // If not processing annotations, classnames must be empty
1057 if (!classnames.isEmpty()) {
1058 log.error("proc.no.explicit.annotation.processing.requested",
1059 classnames);
1060 }
1061 log.reportDeferredDiagnostics();
1062 return this; // continue regular compilation
1063 }
1065 try {
1066 List<ClassSymbol> classSymbols = List.nil();
1067 List<PackageSymbol> pckSymbols = List.nil();
1068 if (!classnames.isEmpty()) {
1069 // Check for explicit request for annotation
1070 // processing
1071 if (!explicitAnnotationProcessingRequested()) {
1072 log.error("proc.no.explicit.annotation.processing.requested",
1073 classnames);
1074 log.reportDeferredDiagnostics();
1075 return this; // TODO: Will this halt compilation?
1076 } else {
1077 boolean errors = false;
1078 for (String nameStr : classnames) {
1079 Symbol sym = resolveBinaryNameOrIdent(nameStr);
1080 if (sym == null || (sym.kind == Kinds.PCK && !processPcks)) {
1081 log.error("proc.cant.find.class", nameStr);
1082 errors = true;
1083 continue;
1084 }
1085 try {
1086 if (sym.kind == Kinds.PCK)
1087 sym.complete();
1088 if (sym.exists()) {
1089 if (sym.kind == Kinds.PCK)
1090 pckSymbols = pckSymbols.prepend((PackageSymbol)sym);
1091 else
1092 classSymbols = classSymbols.prepend((ClassSymbol)sym);
1093 continue;
1094 }
1095 Assert.check(sym.kind == Kinds.PCK);
1096 log.warning("proc.package.does.not.exist", nameStr);
1097 pckSymbols = pckSymbols.prepend((PackageSymbol)sym);
1098 } catch (CompletionFailure e) {
1099 log.error("proc.cant.find.class", nameStr);
1100 errors = true;
1101 continue;
1102 }
1103 }
1104 if (errors) {
1105 log.reportDeferredDiagnostics();
1106 return this;
1107 }
1108 }
1109 }
1110 try {
1111 JavaCompiler c = procEnvImpl.doProcessing(context, roots, classSymbols, pckSymbols);
1112 if (c != this)
1113 annotationProcessingOccurred = c.annotationProcessingOccurred = true;
1114 // doProcessing will have handled deferred diagnostics
1115 Assert.check(c.log.deferDiagnostics == false
1116 && c.log.deferredDiagnostics.size() == 0);
1117 return c;
1118 } finally {
1119 procEnvImpl.close();
1120 }
1121 } catch (CompletionFailure ex) {
1122 log.error("cant.access", ex.sym, ex.getDetailValue());
1123 log.reportDeferredDiagnostics();
1124 return this;
1125 }
1126 }
1128 private boolean unrecoverableError() {
1129 for (JCDiagnostic d: log.deferredDiagnostics) {
1130 if (d.getKind() == JCDiagnostic.Kind.ERROR && !d.isFlagSet(RECOVERABLE))
1131 return true;
1132 }
1133 return false;
1134 }
1136 boolean explicitAnnotationProcessingRequested() {
1137 return
1138 explicitAnnotationProcessingRequested ||
1139 explicitAnnotationProcessingRequested(options);
1140 }
1142 static boolean explicitAnnotationProcessingRequested(Options options) {
1143 return
1144 options.isSet(PROCESSOR) ||
1145 options.isSet(PROCESSORPATH) ||
1146 options.isSet(PROC, "only") ||
1147 options.isSet(XPRINT);
1148 }
1150 /**
1151 * Attribute a list of parse trees, such as found on the "todo" list.
1152 * Note that attributing classes may cause additional files to be
1153 * parsed and entered via the SourceCompleter.
1154 * Attribution of the entries in the list does not stop if any errors occur.
1155 * @returns a list of environments for attributd classes.
1156 */
1157 public Queue<Env<AttrContext>> attribute(Queue<Env<AttrContext>> envs) {
1158 ListBuffer<Env<AttrContext>> results = lb();
1159 while (!envs.isEmpty())
1160 results.append(attribute(envs.remove()));
1161 return stopIfError(CompileState.ATTR, results);
1162 }
1164 /**
1165 * Attribute a parse tree.
1166 * @returns the attributed parse tree
1167 */
1168 public Env<AttrContext> attribute(Env<AttrContext> env) {
1169 if (compileStates.isDone(env, CompileState.ATTR))
1170 return env;
1172 if (verboseCompilePolicy)
1173 printNote("[attribute " + env.enclClass.sym + "]");
1174 if (verbose)
1175 log.printVerbose("checking.attribution", env.enclClass.sym);
1177 if (taskListener != null) {
1178 TaskEvent e = new TaskEvent(TaskEvent.Kind.ANALYZE, env.toplevel, env.enclClass.sym);
1179 taskListener.started(e);
1180 }
1182 JavaFileObject prev = log.useSource(
1183 env.enclClass.sym.sourcefile != null ?
1184 env.enclClass.sym.sourcefile :
1185 env.toplevel.sourcefile);
1186 try {
1187 attr.attrib(env);
1188 if (errorCount() > 0 && !shouldStop(CompileState.ATTR)) {
1189 //if in fail-over mode, ensure that AST expression nodes
1190 //are correctly initialized (e.g. they have a type/symbol)
1191 attr.postAttr(env);
1192 }
1193 compileStates.put(env, CompileState.ATTR);
1194 }
1195 finally {
1196 log.useSource(prev);
1197 }
1199 return env;
1200 }
1202 /**
1203 * Perform dataflow checks on attributed parse trees.
1204 * These include checks for definite assignment and unreachable statements.
1205 * If any errors occur, an empty list will be returned.
1206 * @returns the list of attributed parse trees
1207 */
1208 public Queue<Env<AttrContext>> flow(Queue<Env<AttrContext>> envs) {
1209 ListBuffer<Env<AttrContext>> results = lb();
1210 for (Env<AttrContext> env: envs) {
1211 flow(env, results);
1212 }
1213 return stopIfError(CompileState.FLOW, results);
1214 }
1216 /**
1217 * Perform dataflow checks on an attributed parse tree.
1218 */
1219 public Queue<Env<AttrContext>> flow(Env<AttrContext> env) {
1220 ListBuffer<Env<AttrContext>> results = lb();
1221 flow(env, results);
1222 return stopIfError(CompileState.FLOW, results);
1223 }
1225 /**
1226 * Perform dataflow checks on an attributed parse tree.
1227 */
1228 protected void flow(Env<AttrContext> env, Queue<Env<AttrContext>> results) {
1229 try {
1230 if (shouldStop(CompileState.FLOW))
1231 return;
1233 if (relax || compileStates.isDone(env, CompileState.FLOW)) {
1234 results.add(env);
1235 return;
1236 }
1238 if (verboseCompilePolicy)
1239 printNote("[flow " + env.enclClass.sym + "]");
1240 JavaFileObject prev = log.useSource(
1241 env.enclClass.sym.sourcefile != null ?
1242 env.enclClass.sym.sourcefile :
1243 env.toplevel.sourcefile);
1244 try {
1245 make.at(Position.FIRSTPOS);
1246 TreeMaker localMake = make.forToplevel(env.toplevel);
1247 flow.analyzeTree(env, localMake);
1248 compileStates.put(env, CompileState.FLOW);
1250 if (shouldStop(CompileState.FLOW))
1251 return;
1253 results.add(env);
1254 }
1255 finally {
1256 log.useSource(prev);
1257 }
1258 }
1259 finally {
1260 if (taskListener != null) {
1261 TaskEvent e = new TaskEvent(TaskEvent.Kind.ANALYZE, env.toplevel, env.enclClass.sym);
1262 taskListener.finished(e);
1263 }
1264 }
1265 }
1267 /**
1268 * Prepare attributed parse trees, in conjunction with their attribution contexts,
1269 * for source or code generation.
1270 * If any errors occur, an empty list will be returned.
1271 * @returns a list containing the classes to be generated
1272 */
1273 public Queue<Pair<Env<AttrContext>, JCClassDecl>> desugar(Queue<Env<AttrContext>> envs) {
1274 ListBuffer<Pair<Env<AttrContext>, JCClassDecl>> results = lb();
1275 for (Env<AttrContext> env: envs)
1276 desugar(env, results);
1277 return stopIfError(CompileState.FLOW, results);
1278 }
1280 HashMap<Env<AttrContext>, Queue<Pair<Env<AttrContext>, JCClassDecl>>> desugaredEnvs =
1281 new HashMap<Env<AttrContext>, Queue<Pair<Env<AttrContext>, JCClassDecl>>>();
1283 /**
1284 * Prepare attributed parse trees, in conjunction with their attribution contexts,
1285 * for source or code generation. If the file was not listed on the command line,
1286 * the current implicitSourcePolicy is taken into account.
1287 * The preparation stops as soon as an error is found.
1288 */
1289 protected void desugar(final Env<AttrContext> env, Queue<Pair<Env<AttrContext>, JCClassDecl>> results) {
1290 if (shouldStop(CompileState.TRANSTYPES))
1291 return;
1293 if (implicitSourcePolicy == ImplicitSourcePolicy.NONE
1294 && !inputFiles.contains(env.toplevel.sourcefile)) {
1295 return;
1296 }
1298 if (compileStates.isDone(env, CompileState.LOWER)) {
1299 results.addAll(desugaredEnvs.get(env));
1300 return;
1301 }
1303 /**
1304 * Ensure that superclasses of C are desugared before C itself. This is
1305 * required for two reasons: (i) as erasure (TransTypes) destroys
1306 * information needed in flow analysis and (ii) as some checks carried
1307 * out during lowering require that all synthetic fields/methods have
1308 * already been added to C and its superclasses.
1309 */
1310 class ScanNested extends TreeScanner {
1311 Set<Env<AttrContext>> dependencies = new LinkedHashSet<Env<AttrContext>>();
1312 @Override
1313 public void visitClassDef(JCClassDecl node) {
1314 Type st = types.supertype(node.sym.type);
1315 if (st.tag == TypeTags.CLASS) {
1316 ClassSymbol c = st.tsym.outermostClass();
1317 Env<AttrContext> stEnv = enter.getEnv(c);
1318 if (stEnv != null && env != stEnv) {
1319 if (dependencies.add(stEnv))
1320 scan(stEnv.tree);
1321 }
1322 }
1323 super.visitClassDef(node);
1324 }
1325 }
1326 ScanNested scanner = new ScanNested();
1327 scanner.scan(env.tree);
1328 for (Env<AttrContext> dep: scanner.dependencies) {
1329 if (!compileStates.isDone(dep, CompileState.FLOW))
1330 desugaredEnvs.put(dep, desugar(flow(attribute(dep))));
1331 }
1333 //We need to check for error another time as more classes might
1334 //have been attributed and analyzed at this stage
1335 if (shouldStop(CompileState.TRANSTYPES))
1336 return;
1338 if (verboseCompilePolicy)
1339 printNote("[desugar " + env.enclClass.sym + "]");
1341 JavaFileObject prev = log.useSource(env.enclClass.sym.sourcefile != null ?
1342 env.enclClass.sym.sourcefile :
1343 env.toplevel.sourcefile);
1344 try {
1345 //save tree prior to rewriting
1346 JCTree untranslated = env.tree;
1348 make.at(Position.FIRSTPOS);
1349 TreeMaker localMake = make.forToplevel(env.toplevel);
1351 if (env.tree instanceof JCCompilationUnit) {
1352 if (!(stubOutput || sourceOutput || printFlat)) {
1353 if (shouldStop(CompileState.LOWER))
1354 return;
1355 List<JCTree> pdef = lower.translateTopLevelClass(env, env.tree, localMake);
1356 if (pdef.head != null) {
1357 Assert.check(pdef.tail.isEmpty());
1358 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, (JCClassDecl)pdef.head));
1359 }
1360 }
1361 return;
1362 }
1364 if (stubOutput) {
1365 //emit stub Java source file, only for compilation
1366 //units enumerated explicitly on the command line
1367 JCClassDecl cdef = (JCClassDecl)env.tree;
1368 if (untranslated instanceof JCClassDecl &&
1369 rootClasses.contains((JCClassDecl)untranslated) &&
1370 ((cdef.mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1371 cdef.sym.packge().getQualifiedName() == names.java_lang)) {
1372 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, removeMethodBodies(cdef)));
1373 }
1374 return;
1375 }
1377 if (shouldStop(CompileState.TRANSTYPES))
1378 return;
1380 env.tree = transTypes.translateTopLevelClass(env.tree, localMake);
1381 compileStates.put(env, CompileState.TRANSTYPES);
1383 if (shouldStop(CompileState.LOWER))
1384 return;
1386 if (sourceOutput) {
1387 //emit standard Java source file, only for compilation
1388 //units enumerated explicitly on the command line
1389 JCClassDecl cdef = (JCClassDecl)env.tree;
1390 if (untranslated instanceof JCClassDecl &&
1391 rootClasses.contains((JCClassDecl)untranslated)) {
1392 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, cdef));
1393 }
1394 return;
1395 }
1397 //translate out inner classes
1398 List<JCTree> cdefs = lower.translateTopLevelClass(env, env.tree, localMake);
1399 compileStates.put(env, CompileState.LOWER);
1401 if (shouldStop(CompileState.LOWER))
1402 return;
1404 //generate code for each class
1405 for (List<JCTree> l = cdefs; l.nonEmpty(); l = l.tail) {
1406 JCClassDecl cdef = (JCClassDecl)l.head;
1407 results.add(new Pair<Env<AttrContext>, JCClassDecl>(env, cdef));
1408 }
1409 }
1410 finally {
1411 log.useSource(prev);
1412 }
1414 }
1416 /** Generates the source or class file for a list of classes.
1417 * The decision to generate a source file or a class file is
1418 * based upon the compiler's options.
1419 * Generation stops if an error occurs while writing files.
1420 */
1421 public void generate(Queue<Pair<Env<AttrContext>, JCClassDecl>> queue) {
1422 generate(queue, null);
1423 }
1425 public void generate(Queue<Pair<Env<AttrContext>, JCClassDecl>> queue, Queue<JavaFileObject> results) {
1426 if (shouldStop(CompileState.GENERATE))
1427 return;
1429 boolean usePrintSource = (stubOutput || sourceOutput || printFlat);
1431 for (Pair<Env<AttrContext>, JCClassDecl> x: queue) {
1432 Env<AttrContext> env = x.fst;
1433 JCClassDecl cdef = x.snd;
1435 if (verboseCompilePolicy) {
1436 printNote("[generate "
1437 + (usePrintSource ? " source" : "code")
1438 + " " + cdef.sym + "]");
1439 }
1441 if (taskListener != null) {
1442 TaskEvent e = new TaskEvent(TaskEvent.Kind.GENERATE, env.toplevel, cdef.sym);
1443 taskListener.started(e);
1444 }
1446 JavaFileObject prev = log.useSource(env.enclClass.sym.sourcefile != null ?
1447 env.enclClass.sym.sourcefile :
1448 env.toplevel.sourcefile);
1449 try {
1450 JavaFileObject file;
1451 if (usePrintSource)
1452 file = printSource(env, cdef);
1453 else
1454 file = genCode(env, cdef);
1455 if (results != null && file != null)
1456 results.add(file);
1457 } catch (IOException ex) {
1458 log.error(cdef.pos(), "class.cant.write",
1459 cdef.sym, ex.getMessage());
1460 return;
1461 } finally {
1462 log.useSource(prev);
1463 }
1465 if (taskListener != null) {
1466 TaskEvent e = new TaskEvent(TaskEvent.Kind.GENERATE, env.toplevel, cdef.sym);
1467 taskListener.finished(e);
1468 }
1469 }
1470 }
1472 // where
1473 Map<JCCompilationUnit, Queue<Env<AttrContext>>> groupByFile(Queue<Env<AttrContext>> envs) {
1474 // use a LinkedHashMap to preserve the order of the original list as much as possible
1475 Map<JCCompilationUnit, Queue<Env<AttrContext>>> map = new LinkedHashMap<JCCompilationUnit, Queue<Env<AttrContext>>>();
1476 for (Env<AttrContext> env: envs) {
1477 Queue<Env<AttrContext>> sublist = map.get(env.toplevel);
1478 if (sublist == null) {
1479 sublist = new ListBuffer<Env<AttrContext>>();
1480 map.put(env.toplevel, sublist);
1481 }
1482 sublist.add(env);
1483 }
1484 return map;
1485 }
1487 JCClassDecl removeMethodBodies(JCClassDecl cdef) {
1488 final boolean isInterface = (cdef.mods.flags & Flags.INTERFACE) != 0;
1489 class MethodBodyRemover extends TreeTranslator {
1490 @Override
1491 public void visitMethodDef(JCMethodDecl tree) {
1492 tree.mods.flags &= ~Flags.SYNCHRONIZED;
1493 for (JCVariableDecl vd : tree.params)
1494 vd.mods.flags &= ~Flags.FINAL;
1495 tree.body = null;
1496 super.visitMethodDef(tree);
1497 }
1498 @Override
1499 public void visitVarDef(JCVariableDecl tree) {
1500 if (tree.init != null && tree.init.type.constValue() == null)
1501 tree.init = null;
1502 super.visitVarDef(tree);
1503 }
1504 @Override
1505 public void visitClassDef(JCClassDecl tree) {
1506 ListBuffer<JCTree> newdefs = lb();
1507 for (List<JCTree> it = tree.defs; it.tail != null; it = it.tail) {
1508 JCTree t = it.head;
1509 switch (t.getTag()) {
1510 case CLASSDEF:
1511 if (isInterface ||
1512 (((JCClassDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1513 (((JCClassDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCClassDecl) t).sym.packge().getQualifiedName() == names.java_lang)
1514 newdefs.append(t);
1515 break;
1516 case METHODDEF:
1517 if (isInterface ||
1518 (((JCMethodDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1519 ((JCMethodDecl) t).sym.name == names.init ||
1520 (((JCMethodDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCMethodDecl) t).sym.packge().getQualifiedName() == names.java_lang)
1521 newdefs.append(t);
1522 break;
1523 case VARDEF:
1524 if (isInterface || (((JCVariableDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 ||
1525 (((JCVariableDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCVariableDecl) t).sym.packge().getQualifiedName() == names.java_lang)
1526 newdefs.append(t);
1527 break;
1528 default:
1529 break;
1530 }
1531 }
1532 tree.defs = newdefs.toList();
1533 super.visitClassDef(tree);
1534 }
1535 }
1536 MethodBodyRemover r = new MethodBodyRemover();
1537 return r.translate(cdef);
1538 }
1540 public void reportDeferredDiagnostics() {
1541 if (errorCount() == 0
1542 && annotationProcessingOccurred
1543 && implicitSourceFilesRead
1544 && implicitSourcePolicy == ImplicitSourcePolicy.UNSET) {
1545 if (explicitAnnotationProcessingRequested())
1546 log.warning("proc.use.implicit");
1547 else
1548 log.warning("proc.use.proc.or.implicit");
1549 }
1550 chk.reportDeferredDiagnostics();
1551 }
1553 /** Close the compiler, flushing the logs
1554 */
1555 public void close() {
1556 close(true);
1557 }
1559 public void close(boolean disposeNames) {
1560 rootClasses = null;
1561 reader = null;
1562 make = null;
1563 writer = null;
1564 enter = null;
1565 if (todo != null)
1566 todo.clear();
1567 todo = null;
1568 parserFactory = null;
1569 syms = null;
1570 source = null;
1571 attr = null;
1572 chk = null;
1573 gen = null;
1574 flow = null;
1575 transTypes = null;
1576 lower = null;
1577 annotate = null;
1578 types = null;
1580 log.flush();
1581 try {
1582 fileManager.flush();
1583 } catch (IOException e) {
1584 throw new Abort(e);
1585 } finally {
1586 if (names != null && disposeNames)
1587 names.dispose();
1588 names = null;
1590 for (Closeable c: closeables) {
1591 try {
1592 c.close();
1593 } catch (IOException e) {
1594 // When javac uses JDK 7 as a baseline, this code would be
1595 // better written to set any/all exceptions from all the
1596 // Closeables as suppressed exceptions on the FatalError
1597 // that is thrown.
1598 JCDiagnostic msg = diagFactory.fragment("fatal.err.cant.close");
1599 throw new FatalError(msg, e);
1600 }
1601 }
1602 }
1603 }
1605 protected void printNote(String lines) {
1606 log.printRawLines(Log.WriterKind.NOTICE, lines);
1607 }
1609 /** Print numbers of errors and warnings.
1610 */
1611 protected void printCount(String kind, int count) {
1612 if (count != 0) {
1613 String key;
1614 if (count == 1)
1615 key = "count." + kind;
1616 else
1617 key = "count." + kind + ".plural";
1618 log.printLines(WriterKind.ERROR, key, String.valueOf(count));
1619 log.flush(Log.WriterKind.ERROR);
1620 }
1621 }
1623 private static long now() {
1624 return System.currentTimeMillis();
1625 }
1627 private static long elapsed(long then) {
1628 return now() - then;
1629 }
1631 public void initRound(JavaCompiler prev) {
1632 genEndPos = prev.genEndPos;
1633 keepComments = prev.keepComments;
1634 start_msec = prev.start_msec;
1635 hasBeenUsed = true;
1636 closeables = prev.closeables;
1637 prev.closeables = List.nil();
1638 }
1640 public static void enableLogging() {
1641 Logger logger = Logger.getLogger(com.sun.tools.javac.Main.class.getPackage().getName());
1642 logger.setLevel(Level.ALL);
1643 for (Handler h : logger.getParent().getHandlers()) {
1644 h.setLevel(Level.ALL);
1645 }
1647 }
1648 }