| 1 | /* |
| 2 | * Copyright 1999-2006 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package com.sun.tools.javac.main; |
| 27 | |
| 28 | import java.io.*; |
| 29 | import java.util.HashSet; |
| 30 | import java.util.LinkedHashMap; |
| 31 | import java.util.Map; |
| 32 | import java.util.MissingResourceException; |
| 33 | import java.util.ResourceBundle; |
| 34 | import java.util.Set; |
| 35 | import java.util.logging.Handler; |
| 36 | import java.util.logging.Level; |
| 37 | import java.util.logging.Logger; |
| 38 | |
| 39 | import javax.tools.JavaFileManager; |
| 40 | import javax.tools.JavaFileObject; |
| 41 | import javax.tools.DiagnosticListener; |
| 42 | |
| 43 | import com.sun.source.util.TaskEvent; |
| 44 | import com.sun.source.util.TaskListener; |
| 45 | |
| 46 | import com.sun.tools.javac.util.*; |
| 47 | import com.sun.tools.javac.code.*; |
| 48 | import com.sun.tools.javac.tree.*; |
| 49 | import com.sun.tools.javac.parser.*; |
| 50 | import com.sun.tools.javac.comp.*; |
| 51 | import com.sun.tools.javac.jvm.*; |
| 52 | |
| 53 | import com.sun.tools.javac.code.Symbol.*; |
| 54 | import com.sun.tools.javac.tree.JCTree.*; |
| 55 | |
| 56 | import com.sun.tools.javac.processing.*; |
| 57 | import javax.annotation.processing.Processor; |
| 58 | |
| 59 | import static javax.tools.StandardLocation.CLASS_OUTPUT; |
| 60 | import static com.sun.tools.javac.util.ListBuffer.lb; |
| 61 | |
| 62 | // TEMP, until we have a more efficient way to save doc comment info |
| 63 | import com.sun.tools.javac.parser.DocCommentScanner; |
| 64 | |
| 65 | import javax.lang.model.SourceVersion; |
| 66 | |
| 67 | /** This class could be the main entry point for GJC when GJC is used as a |
| 68 | * component in a larger software system. It provides operations to |
| 69 | * construct a new compiler, and to run a new compiler on a set of source |
| 70 | * files. |
| 71 | * |
| 72 | * <p><b>This is NOT part of any API supported by Sun Microsystems. If |
| 73 | * you write code that depends on this, you do so at your own risk. |
| 74 | * This code and its internal interfaces are subject to change or |
| 75 | * deletion without notice.</b> |
| 76 | */ |
| 77 | public class JavaCompiler implements ClassReader.SourceCompleter { |
| 78 | /** The context key for the compiler. */ |
| 79 | protected static final Context.Key<JavaCompiler> compilerKey = |
| 80 | new Context.Key<JavaCompiler>(); |
| 81 | |
| 82 | /** Get the JavaCompiler instance for this context. */ |
| 83 | public static JavaCompiler instance(Context context) { |
| 84 | JavaCompiler instance = context.get(compilerKey); |
| 85 | if (instance == null) |
| 86 | instance = new JavaCompiler(context); |
| 87 | return instance; |
| 88 | } |
| 89 | |
| 90 | /** The current version number as a string. |
| 91 | */ |
| 92 | public static String version() { |
| 93 | return version("release"); // mm.nn.oo[-milestone] |
| 94 | } |
| 95 | |
| 96 | /** The current full version number as a string. |
| 97 | */ |
| 98 | public static String fullVersion() { |
| 99 | return version("full"); // mm.mm.oo[-milestone]-build |
| 100 | } |
| 101 | |
| 102 | private static final String versionRBName = "com.sun.tools.javac.resources.version"; |
| 103 | private static ResourceBundle versionRB; |
| 104 | |
| 105 | private static String version(String key) { |
| 106 | if (versionRB == null) { |
| 107 | try { |
| 108 | versionRB = ResourceBundle.getBundle(versionRBName); |
| 109 | } catch (MissingResourceException e) { |
| 110 | return Log.getLocalizedString("version.resource.missing", System.getProperty("java.version")); |
| 111 | } |
| 112 | } |
| 113 | try { |
| 114 | return versionRB.getString(key); |
| 115 | } |
| 116 | catch (MissingResourceException e) { |
| 117 | return Log.getLocalizedString("version.unknown", System.getProperty("java.version")); |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | private static enum CompilePolicy { |
| 122 | /* |
| 123 | * Just attribute the parse trees |
| 124 | */ |
| 125 | ATTR_ONLY, |
| 126 | |
| 127 | /* |
| 128 | * Just attribute and do flow analysis on the parse trees. |
| 129 | * This should catch most user errors. |
| 130 | */ |
| 131 | CHECK_ONLY, |
| 132 | |
| 133 | /* |
| 134 | * Attribute everything, then do flow analysis for everything, |
| 135 | * then desugar everything, and only then generate output. |
| 136 | * Means nothing is generated if there are any errors in any classes. |
| 137 | */ |
| 138 | SIMPLE, |
| 139 | |
| 140 | /* |
| 141 | * After attributing everything and doing flow analysis, |
| 142 | * group the work by compilation unit. |
| 143 | * Then, process the work for each compilation unit together. |
| 144 | * Means nothing is generated for a compilation unit if the are any errors |
| 145 | * in the compilation unit (or in any preceding compilation unit.) |
| 146 | */ |
| 147 | BY_FILE, |
| 148 | |
| 149 | /* |
| 150 | * Completely process each entry on the todo list in turn. |
| 151 | * -- this is the same for 1.5. |
| 152 | * Means output might be generated for some classes in a compilation unit |
| 153 | * and not others. |
| 154 | */ |
| 155 | BY_TODO; |
| 156 | |
| 157 | static CompilePolicy decode(String option) { |
| 158 | if (option == null) |
| 159 | return DEFAULT_COMPILE_POLICY; |
| 160 | else if (option.equals("attr")) |
| 161 | return ATTR_ONLY; |
| 162 | else if (option.equals("check")) |
| 163 | return CHECK_ONLY; |
| 164 | else if (option.equals("simple")) |
| 165 | return SIMPLE; |
| 166 | else if (option.equals("byfile")) |
| 167 | return BY_FILE; |
| 168 | else if (option.equals("bytodo")) |
| 169 | return BY_TODO; |
| 170 | else |
| 171 | return DEFAULT_COMPILE_POLICY; |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | private static CompilePolicy DEFAULT_COMPILE_POLICY = CompilePolicy.BY_TODO; |
| 176 | |
| 177 | private static enum ImplicitSourcePolicy { |
| 178 | /** Don't generate or process implicitly read source files. */ |
| 179 | NONE, |
| 180 | /** Generate classes for implicitly read source files. */ |
| 181 | CLASS, |
| 182 | /** Like CLASS, but generate warnings if annotation processing occurs */ |
| 183 | UNSET; |
| 184 | |
| 185 | static ImplicitSourcePolicy decode(String option) { |
| 186 | if (option == null) |
| 187 | return UNSET; |
| 188 | else if (option.equals("none")) |
| 189 | return NONE; |
| 190 | else if (option.equals("class")) |
| 191 | return CLASS; |
| 192 | else |
| 193 | return UNSET; |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | /** The log to be used for error reporting. |
| 198 | */ |
| 199 | public Log log; |
| 200 | |
| 201 | /** The tree factory module. |
| 202 | */ |
| 203 | protected TreeMaker make; |
| 204 | |
| 205 | /** The class reader. |
| 206 | */ |
| 207 | protected ClassReader reader; |
| 208 | |
| 209 | /** The class writer. |
| 210 | */ |
| 211 | protected ClassWriter writer; |
| 212 | |
| 213 | /** The module for the symbol table entry phases. |
| 214 | */ |
| 215 | protected Enter enter; |
| 216 | |
| 217 | /** The symbol table. |
| 218 | */ |
| 219 | protected Symtab syms; |
| 220 | |
| 221 | /** The language version. |
| 222 | */ |
| 223 | protected Source source; |
| 224 | |
| 225 | /** The module for code generation. |
| 226 | */ |
| 227 | protected Gen gen; |
| 228 | |
| 229 | /** The name table. |
| 230 | */ |
| 231 | protected Name.Table names; |
| 232 | |
| 233 | /** The attributor. |
| 234 | */ |
| 235 | protected Attr attr; |
| 236 | |
| 237 | /** The attributor. |
| 238 | */ |
| 239 | protected Check chk; |
| 240 | |
| 241 | /** The flow analyzer. |
| 242 | */ |
| 243 | protected Flow flow; |
| 244 | |
| 245 | /** The type eraser. |
| 246 | */ |
| 247 | TransTypes transTypes; |
| 248 | |
| 249 | /** The syntactic sugar desweetener. |
| 250 | */ |
| 251 | Lower lower; |
| 252 | |
| 253 | /** The annotation annotator. |
| 254 | */ |
| 255 | protected Annotate annotate; |
| 256 | |
| 257 | /** Force a completion failure on this name |
| 258 | */ |
| 259 | protected final Name completionFailureName; |
| 260 | |
| 261 | /** Type utilities. |
| 262 | */ |
| 263 | protected Types types; |
| 264 | |
| 265 | /** Access to file objects. |
| 266 | */ |
| 267 | protected JavaFileManager fileManager; |
| 268 | |
| 269 | /** Factory for parsers. |
| 270 | */ |
| 271 | protected Parser.Factory parserFactory; |
| 272 | |
| 273 | /** Optional listener for progress events |
| 274 | */ |
| 275 | protected TaskListener taskListener; |
| 276 | |
| 277 | /** |
| 278 | * Annotation processing may require and provide a new instance |
| 279 | * of the compiler to be used for the analyze and generate phases. |
| 280 | */ |
| 281 | protected JavaCompiler delegateCompiler; |
| 282 | |
| 283 | /** |
| 284 | * Flag set if any annotation processing occurred. |
| 285 | **/ |
| 286 | protected boolean annotationProcessingOccurred; |
| 287 | |
| 288 | /** |
| 289 | * Flag set if any implicit source files read. |
| 290 | **/ |
| 291 | protected boolean implicitSourceFilesRead; |
| 292 | |
| 293 | protected Context context; |
| 294 | |
| 295 | /** Construct a new compiler using a shared context. |
| 296 | */ |
| 297 | public JavaCompiler(final Context context) { |
| 298 | this.context = context; |
| 299 | context.put(compilerKey, this); |
| 300 | |
| 301 | // if fileManager not already set, register the JavacFileManager to be used |
| 302 | if (context.get(JavaFileManager.class) == null) |
| 303 | JavacFileManager.preRegister(context); |
| 304 | |
| 305 | names = Name.Table.instance(context); |
| 306 | log = Log.instance(context); |
| 307 | reader = ClassReader.instance(context); |
| 308 | make = TreeMaker.instance(context); |
| 309 | writer = ClassWriter.instance(context); |
| 310 | enter = Enter.instance(context); |
| 311 | todo = Todo.instance(context); |
| 312 | |
| 313 | fileManager = context.get(JavaFileManager.class); |
| 314 | parserFactory = Parser.Factory.instance(context); |
| 315 | |
| 316 | try { |
| 317 | // catch completion problems with predefineds |
| 318 | syms = Symtab.instance(context); |
| 319 | } catch (CompletionFailure ex) { |
| 320 | // inlined Check.completionError as it is not initialized yet |
| 321 | log.error("cant.access", ex.sym, ex.errmsg); |
| 322 | if (ex instanceof ClassReader.BadClassFile) |
| 323 | throw new Abort(); |
| 324 | } |
| 325 | source = Source.instance(context); |
| 326 | attr = Attr.instance(context); |
| 327 | chk = Check.instance(context); |
| 328 | gen = Gen.instance(context); |
| 329 | flow = Flow.instance(context); |
| 330 | transTypes = TransTypes.instance(context); |
| 331 | lower = Lower.instance(context); |
| 332 | annotate = Annotate.instance(context); |
| 333 | types = Types.instance(context); |
| 334 | taskListener = context.get(TaskListener.class); |
| 335 | |
| 336 | reader.sourceCompleter = this; |
| 337 | |
| 338 | Options options = Options.instance(context); |
| 339 | |
| 340 | verbose = options.get("-verbose") != null; |
| 341 | sourceOutput = options.get("-printsource") != null; // used to be -s |
| 342 | stubOutput = options.get("-stubs") != null; |
| 343 | relax = options.get("-relax") != null; |
| 344 | printFlat = options.get("-printflat") != null; |
| 345 | attrParseOnly = options.get("-attrparseonly") != null; |
| 346 | encoding = options.get("-encoding"); |
| 347 | lineDebugInfo = options.get("-g:") == null || |
| 348 | options.get("-g:lines") != null; |
| 349 | genEndPos = options.get("-Xjcov") != null || |
| 350 | context.get(DiagnosticListener.class) != null; |
| 351 | devVerbose = options.get("dev") != null; |
| 352 | processPcks = options.get("process.packages") != null; |
| 353 | |
| 354 | verboseCompilePolicy = options.get("verboseCompilePolicy") != null; |
| 355 | |
| 356 | if (attrParseOnly) |
| 357 | compilePolicy = CompilePolicy.ATTR_ONLY; |
| 358 | else |
| 359 | compilePolicy = CompilePolicy.decode(options.get("compilePolicy")); |
| 360 | |
| 361 | implicitSourcePolicy = ImplicitSourcePolicy.decode(options.get("-implicit")); |
| 362 | |
| 363 | completionFailureName = |
| 364 | (options.get("failcomplete") != null) |
| 365 | ? names.fromString(options.get("failcomplete")) |
| 366 | : null; |
| 367 | } |
| 368 | |
| 369 | /* Switches: |
| 370 | */ |
| 371 | |
| 372 | /** Verbose output. |
| 373 | */ |
| 374 | public boolean verbose; |
| 375 | |
| 376 | /** Emit plain Java source files rather than class files. |
| 377 | */ |
| 378 | public boolean sourceOutput; |
| 379 | |
| 380 | /** Emit stub source files rather than class files. |
| 381 | */ |
| 382 | public boolean stubOutput; |
| 383 | |
| 384 | /** Generate attributed parse tree only. |
| 385 | */ |
| 386 | public boolean attrParseOnly; |
| 387 | |
| 388 | /** Switch: relax some constraints for producing the jsr14 prototype. |
| 389 | */ |
| 390 | boolean relax; |
| 391 | |
| 392 | /** Debug switch: Emit Java sources after inner class flattening. |
| 393 | */ |
| 394 | public boolean printFlat; |
| 395 | |
| 396 | /** The encoding to be used for source input. |
| 397 | */ |
| 398 | public String encoding; |
| 399 | |
| 400 | /** Generate code with the LineNumberTable attribute for debugging |
| 401 | */ |
| 402 | public boolean lineDebugInfo; |
| 403 | |
| 404 | /** Switch: should we store the ending positions? |
| 405 | */ |
| 406 | public boolean genEndPos; |
| 407 | |
| 408 | /** Switch: should we debug ignored exceptions |
| 409 | */ |
| 410 | protected boolean devVerbose; |
| 411 | |
| 412 | /** Switch: should we (annotation) process packages as well |
| 413 | */ |
| 414 | protected boolean processPcks; |
| 415 | |
| 416 | /** Switch: is annotation processing requested explitly via |
| 417 | * CompilationTask.setProcessors? |
| 418 | */ |
| 419 | protected boolean explicitAnnotationProcessingRequested = false; |
| 420 | |
| 421 | /** |
| 422 | * The policy for the order in which to perform the compilation |
| 423 | */ |
| 424 | protected CompilePolicy compilePolicy; |
| 425 | |
| 426 | /** |
| 427 | * The policy for what to do with implicitly read source files |
| 428 | */ |
| 429 | protected ImplicitSourcePolicy implicitSourcePolicy; |
| 430 | |
| 431 | /** |
| 432 | * Report activity related to compilePolicy |
| 433 | */ |
| 434 | public boolean verboseCompilePolicy; |
| 435 | |
| 436 | /** A queue of all as yet unattributed classes. |
| 437 | */ |
| 438 | public Todo todo; |
| 439 | |
| 440 | private Set<Env<AttrContext>> deferredSugar = new HashSet<Env<AttrContext>>(); |
| 441 | |
| 442 | /** The set of currently compiled inputfiles, needed to ensure |
| 443 | * we don't accidentally overwrite an input file when -s is set. |
| 444 | * initialized by `compile'. |
| 445 | */ |
| 446 | protected Set<JavaFileObject> inputFiles = new HashSet<JavaFileObject>(); |
| 447 | |
| 448 | /** The number of errors reported so far. |
| 449 | */ |
| 450 | public int errorCount() { |
| 451 | if (delegateCompiler != null && delegateCompiler != this) |
| 452 | return delegateCompiler.errorCount(); |
| 453 | else |
| 454 | return log.nerrors; |
| 455 | } |
| 456 | |
| 457 | protected final <T> List<T> stopIfError(ListBuffer<T> listBuffer) { |
| 458 | if (errorCount() == 0) |
| 459 | return listBuffer.toList(); |
| 460 | else |
| 461 | return List.nil(); |
| 462 | } |
| 463 | |
| 464 | protected final <T> List<T> stopIfError(List<T> list) { |
| 465 | if (errorCount() == 0) |
| 466 | return list; |
| 467 | else |
| 468 | return List.nil(); |
| 469 | } |
| 470 | |
| 471 | /** The number of warnings reported so far. |
| 472 | */ |
| 473 | public int warningCount() { |
| 474 | if (delegateCompiler != null && delegateCompiler != this) |
| 475 | return delegateCompiler.warningCount(); |
| 476 | else |
| 477 | return log.nwarnings; |
| 478 | } |
| 479 | |
| 480 | /** Whether or not any parse errors have occurred. |
| 481 | */ |
| 482 | public boolean parseErrors() { |
| 483 | return parseErrors; |
| 484 | } |
| 485 | |
| 486 | protected Scanner.Factory getScannerFactory() { |
| 487 | return Scanner.Factory.instance(context); |
| 488 | } |
| 489 | |
| 490 | /** Try to open input stream with given name. |
| 491 | * Report an error if this fails. |
| 492 | * @param filename The file name of the input stream to be opened. |
| 493 | */ |
| 494 | public CharSequence readSource(JavaFileObject filename) { |
| 495 | try { |
| 496 | inputFiles.add(filename); |
| 497 | return filename.getCharContent(false); |
| 498 | } catch (IOException e) { |
| 499 | log.error("error.reading.file", filename, e.getLocalizedMessage()); |
| 500 | return null; |
| 501 | } |
| 502 | } |
| 503 | |
| 504 | /** Parse contents of input stream. |
| 505 | * @param filename The name of the file from which input stream comes. |
| 506 | * @param input The input stream to be parsed. |
| 507 | */ |
| 508 | protected JCCompilationUnit parse(JavaFileObject filename, CharSequence content) { |
| 509 | long msec = now(); |
| 510 | JCCompilationUnit tree = make.TopLevel(List.<JCTree.JCAnnotation>nil(), |
| 511 | null, List.<JCTree>nil()); |
| 512 | if (content != null) { |
| 513 | if (verbose) { |
| 514 | printVerbose("parsing.started", filename); |
| 515 | } |
| 516 | if (taskListener != null) { |
| 517 | TaskEvent e = new TaskEvent(TaskEvent.Kind.PARSE, filename); |
| 518 | taskListener.started(e); |
| 519 | } |
| 520 | int initialErrorCount = log.nerrors; |
| 521 | Scanner scanner = getScannerFactory().newScanner(content); |
| 522 | Parser parser = parserFactory.newParser(scanner, keepComments(), genEndPos); |
| 523 | tree = parser.compilationUnit(); |
| 524 | parseErrors |= (log.nerrors > initialErrorCount); |
| 525 | if (lineDebugInfo) { |
| 526 | tree.lineMap = scanner.getLineMap(); |
| 527 | } |
| 528 | if (verbose) { |
| 529 | printVerbose("parsing.done", Long.toString(elapsed(msec))); |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | tree.sourcefile = filename; |
| 534 | |
| 535 | if (content != null && taskListener != null) { |
| 536 | TaskEvent e = new TaskEvent(TaskEvent.Kind.PARSE, tree); |
| 537 | taskListener.finished(e); |
| 538 | } |
| 539 | |
| 540 | return tree; |
| 541 | } |
| 542 | // where |
| 543 | public boolean keepComments = false; |
| 544 | protected boolean keepComments() { |
| 545 | return keepComments || sourceOutput || stubOutput; |
| 546 | } |
| 547 | |
| 548 | |
| 549 | /** Parse contents of file. |
| 550 | * @param filename The name of the file to be parsed. |
| 551 | */ |
| 552 | @Deprecated |
| 553 | public JCTree.JCCompilationUnit parse(String filename) throws IOException { |
| 554 | JavacFileManager fm = (JavacFileManager)fileManager; |
| 555 | return parse(fm.getJavaFileObjectsFromStrings(List.of(filename)).iterator().next()); |
| 556 | } |
| 557 | |
| 558 | /** Parse contents of file. |
| 559 | * @param filename The name of the file to be parsed. |
| 560 | */ |
| 561 | public JCTree.JCCompilationUnit parse(JavaFileObject filename) { |
| 562 | JavaFileObject prev = log.useSource(filename); |
| 563 | try { |
| 564 | JCTree.JCCompilationUnit t = parse(filename, readSource(filename)); |
| 565 | if (t.endPositions != null) |
| 566 | log.setEndPosTable(filename, t.endPositions); |
| 567 | return t; |
| 568 | } finally { |
| 569 | log.useSource(prev); |
| 570 | } |
| 571 | } |
| 572 | |
| 573 | /** Resolve an identifier. |
| 574 | * @param name The identifier to resolve |
| 575 | */ |
| 576 | public Symbol resolveIdent(String name) { |
| 577 | if (name.equals("")) |
| 578 | return syms.errSymbol; |
| 579 | JavaFileObject prev = log.useSource(null); |
| 580 | try { |
| 581 | JCExpression tree = null; |
| 582 | for (String s : name.split("\\.", -1)) { |
| 583 | if (!SourceVersion.isIdentifier(s)) // TODO: check for keywords |
| 584 | return syms.errSymbol; |
| 585 | tree = (tree == null) ? make.Ident(names.fromString(s)) |
| 586 | : make.Select(tree, names.fromString(s)); |
| 587 | } |
| 588 | JCCompilationUnit toplevel = |
| 589 | make.TopLevel(List.<JCTree.JCAnnotation>nil(), null, List.<JCTree>nil()); |
| 590 | toplevel.packge = syms.unnamedPackage; |
| 591 | return attr.attribIdent(tree, toplevel); |
| 592 | } finally { |
| 593 | log.useSource(prev); |
| 594 | } |
| 595 | } |
| 596 | |
| 597 | /** Emit plain Java source for a class. |
| 598 | * @param env The attribution environment of the outermost class |
| 599 | * containing this class. |
| 600 | * @param cdef The class definition to be printed. |
| 601 | */ |
| 602 | JavaFileObject printSource(Env<AttrContext> env, JCClassDecl cdef) throws IOException { |
| 603 | JavaFileObject outFile |
| 604 | = fileManager.getJavaFileForOutput(CLASS_OUTPUT, |
| 605 | cdef.sym.flatname.toString(), |
| 606 | JavaFileObject.Kind.SOURCE, |
| 607 | null); |
| 608 | if (inputFiles.contains(outFile)) { |
| 609 | log.error(cdef.pos(), "source.cant.overwrite.input.file", outFile); |
| 610 | return null; |
| 611 | } else { |
| 612 | BufferedWriter out = new BufferedWriter(outFile.openWriter()); |
| 613 | try { |
| 614 | new Pretty(out, true).printUnit(env.toplevel, cdef); |
| 615 | if (verbose) |
| 616 | printVerbose("wrote.file", outFile); |
| 617 | } finally { |
| 618 | out.close(); |
| 619 | } |
| 620 | return outFile; |
| 621 | } |
| 622 | } |
| 623 | |
| 624 | /** Generate code and emit a class file for a given class |
| 625 | * @param env The attribution environment of the outermost class |
| 626 | * containing this class. |
| 627 | * @param cdef The class definition from which code is generated. |
| 628 | */ |
| 629 | JavaFileObject genCode(Env<AttrContext> env, JCClassDecl cdef) throws IOException { |
| 630 | try { |
| 631 | if (gen.genClass(env, cdef)) |
| 632 | return writer.writeClass(cdef.sym); |
| 633 | } catch (ClassWriter.PoolOverflow ex) { |
| 634 | log.error(cdef.pos(), "limit.pool"); |
| 635 | } catch (ClassWriter.StringOverflow ex) { |
| 636 | log.error(cdef.pos(), "limit.string.overflow", |
| 637 | ex.value.substring(0, 20)); |
| 638 | } catch (CompletionFailure ex) { |
| 639 | chk.completionError(cdef.pos(), ex); |
| 640 | } |
| 641 | return null; |
| 642 | } |
| 643 | |
| 644 | /** Complete compiling a source file that has been accessed |
| 645 | * by the class file reader. |
| 646 | * @param c The class the source file of which needs to be compiled. |
| 647 | * @param filename The name of the source file. |
| 648 | * @param f An input stream that reads the source file. |
| 649 | */ |
| 650 | public void complete(ClassSymbol c) throws CompletionFailure { |
| 651 | // System.err.println("completing " + c);//DEBUG |
| 652 | if (completionFailureName == c.fullname) { |
| 653 | throw new CompletionFailure(c, "user-selected completion failure by class name"); |
| 654 | } |
| 655 | JCCompilationUnit tree; |
| 656 | JavaFileObject filename = c.classfile; |
| 657 | JavaFileObject prev = log.useSource(filename); |
| 658 | |
| 659 | try { |
| 660 | tree = parse(filename, filename.getCharContent(false)); |
| 661 | } catch (IOException e) { |
| 662 | log.error("error.reading.file", filename, e); |
| 663 | tree = make.TopLevel(List.<JCTree.JCAnnotation>nil(), null, List.<JCTree>nil()); |
| 664 | } finally { |
| 665 | log.useSource(prev); |
| 666 | } |
| 667 | |
| 668 | if (taskListener != null) { |
| 669 | TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, tree); |
| 670 | taskListener.started(e); |
| 671 | } |
| 672 | |
| 673 | enter.complete(List.of(tree), c); |
| 674 | |
| 675 | if (taskListener != null) { |
| 676 | TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, tree); |
| 677 | taskListener.finished(e); |
| 678 | } |
| 679 | |
| 680 | if (enter.getEnv(c) == null) { |
| 681 | boolean isPkgInfo = |
| 682 | tree.sourcefile.isNameCompatible("package-info", |
| 683 | JavaFileObject.Kind.SOURCE); |
| 684 | if (isPkgInfo) { |
| 685 | if (enter.getEnv(tree.packge) == null) { |
| 686 | String msg |
| 687 | = log.getLocalizedString("file.does.not.contain.package", |
| 688 | c.location()); |
| 689 | throw new ClassReader.BadClassFile(c, filename, msg); |
| 690 | } |
| 691 | } else { |
| 692 | throw new |
| 693 | ClassReader.BadClassFile(c, filename, log. |
| 694 | getLocalizedString("file.doesnt.contain.class", |
| 695 | c.fullname)); |
| 696 | } |
| 697 | } |
| 698 | |
| 699 | implicitSourceFilesRead = true; |
| 700 | } |
| 701 | |
| 702 | /** Track when the JavaCompiler has been used to compile something. */ |
| 703 | private boolean hasBeenUsed = false; |
| 704 | private long start_msec = 0; |
| 705 | public long elapsed_msec = 0; |
| 706 | |
| 707 | /** Track whether any errors occurred while parsing source text. */ |
| 708 | private boolean parseErrors = false; |
| 709 | |
| 710 | public void compile(List<JavaFileObject> sourceFileObject) |
| 711 | throws Throwable { |
| 712 | compile(sourceFileObject, List.<String>nil(), null); |
| 713 | } |
| 714 | |
| 715 | /** |
| 716 | * Main method: compile a list of files, return all compiled classes |
| 717 | * |
| 718 | * @param sourceFileObjects file objects to be compiled |
| 719 | * @param classnames class names to process for annotations |
| 720 | * @param processors user provided annotation processors to bypass |
| 721 | * discovery, {@code null} means that no processors were provided |
| 722 | */ |
| 723 | public void compile(List<JavaFileObject> sourceFileObjects, |
| 724 | List<String> classnames, |
| 725 | Iterable<? extends Processor> processors) |
| 726 | throws IOException // TODO: temp, from JavacProcessingEnvironment |
| 727 | { |
| 728 | if (processors != null && processors.iterator().hasNext()) |
| 729 | explicitAnnotationProcessingRequested = true; |
| 730 | // as a JavaCompiler can only be used once, throw an exception if |
| 731 | // it has been used before. |
| 732 | if (hasBeenUsed) |
| 733 | throw new AssertionError("attempt to reuse JavaCompiler"); |
| 734 | hasBeenUsed = true; |
| 735 | |
| 736 | start_msec = now(); |
| 737 | try { |
| 738 | initProcessAnnotations(processors); |
| 739 | |
| 740 | // These method calls must be chained to avoid memory leaks |
| 741 | delegateCompiler = processAnnotations(enterTrees(stopIfError(parseFiles(sourceFileObjects))), |
| 742 | classnames); |
| 743 | |
| 744 | delegateCompiler.compile2(); |
| 745 | delegateCompiler.close(); |
| 746 | elapsed_msec = delegateCompiler.elapsed_msec; |
| 747 | } catch (Abort ex) { |
| 748 | if (devVerbose) |
| 749 | ex.printStackTrace(); |
| 750 | } |
| 751 | } |
| 752 | |
| 753 | /** |
| 754 | * The phases following annotation processing: attribution, |
| 755 | * desugar, and finally code generation. |
| 756 | */ |
| 757 | private void compile2() { |
| 758 | try { |
| 759 | switch (compilePolicy) { |
| 760 | case ATTR_ONLY: |
| 761 | attribute(todo); |
| 762 | break; |
| 763 | |
| 764 | case CHECK_ONLY: |
| 765 | flow(attribute(todo)); |
| 766 | break; |
| 767 | |
| 768 | case SIMPLE: |
| 769 | generate(desugar(flow(attribute(todo)))); |
| 770 | break; |
| 771 | |
| 772 | case BY_FILE: |
| 773 | for (List<Env<AttrContext>> list : groupByFile(flow(attribute(todo))).values()) |
| 774 | generate(desugar(list)); |
| 775 | break; |
| 776 | |
| 777 | case BY_TODO: |
| 778 | while (todo.nonEmpty()) |
| 779 | generate(desugar(flow(attribute(todo.next())))); |
| 780 | break; |
| 781 | |
| 782 | default: |
| 783 | assert false: "unknown compile policy"; |
| 784 | } |
| 785 | } catch (Abort ex) { |
| 786 | if (devVerbose) |
| 787 | ex.printStackTrace(); |
| 788 | } |
| 789 | |
| 790 | if (verbose) { |
| 791 | elapsed_msec = elapsed(start_msec);; |
| 792 | printVerbose("total", Long.toString(elapsed_msec)); |
| 793 | } |
| 794 | |
| 795 | reportDeferredDiagnostics(); |
| 796 | |
| 797 | if (!log.hasDiagnosticListener()) { |
| 798 | printCount("error", errorCount()); |
| 799 | printCount("warn", warningCount()); |
| 800 | } |
| 801 | } |
| 802 | |
| 803 | private List<JCClassDecl> rootClasses; |
| 804 | |
| 805 | /** |
| 806 | * Parses a list of files. |
| 807 | */ |
| 808 | public List<JCCompilationUnit> parseFiles(List<JavaFileObject> fileObjects) throws IOException { |
| 809 | if (errorCount() > 0) |
| 810 | return List.nil(); |
| 811 | |
| 812 | //parse all files |
| 813 | ListBuffer<JCCompilationUnit> trees = lb(); |
| 814 | for (JavaFileObject fileObject : fileObjects) |
| 815 | trees.append(parse(fileObject)); |
| 816 | return trees.toList(); |
| 817 | } |
| 818 | |
| 819 | /** |
| 820 | * Enter the symbols found in a list of parse trees. |
| 821 | * As a side-effect, this puts elements on the "todo" list. |
| 822 | * Also stores a list of all top level classes in rootClasses. |
| 823 | */ |
| 824 | public List<JCCompilationUnit> enterTrees(List<JCCompilationUnit> roots) { |
| 825 | //enter symbols for all files |
| 826 | if (taskListener != null) { |
| 827 | for (JCCompilationUnit unit: roots) { |
| 828 | TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, unit); |
| 829 | taskListener.started(e); |
| 830 | } |
| 831 | } |
| 832 | |
| 833 | enter.main(roots); |
| 834 | |
| 835 | if (taskListener != null) { |
| 836 | for (JCCompilationUnit unit: roots) { |
| 837 | TaskEvent e = new TaskEvent(TaskEvent.Kind.ENTER, unit); |
| 838 | taskListener.finished(e); |
| 839 | } |
| 840 | } |
| 841 | |
| 842 | //If generating source, remember the classes declared in |
| 843 | //the original compilation units listed on the command line. |
| 844 | if (sourceOutput || stubOutput) { |
| 845 | ListBuffer<JCClassDecl> cdefs = lb(); |
| 846 | for (JCCompilationUnit unit : roots) { |
| 847 | for (List<JCTree> defs = unit.defs; |
| 848 | defs.nonEmpty(); |
| 849 | defs = defs.tail) { |
| 850 | if (defs.head instanceof JCClassDecl) |
| 851 | cdefs.append((JCClassDecl)defs.head); |
| 852 | } |
| 853 | } |
| 854 | rootClasses = cdefs.toList(); |
| 855 | } |
| 856 | return roots; |
| 857 | } |
| 858 | |
| 859 | /** |
| 860 | * Set to true to enable skeleton annotation processing code. |
| 861 | * Currently, we assume this variable will be replaced more |
| 862 | * advanced logic to figure out if annotation processing is |
| 863 | * needed. |
| 864 | */ |
| 865 | boolean processAnnotations = false; |
| 866 | |
| 867 | /** |
| 868 | * Object to handle annotation processing. |
| 869 | */ |
| 870 | JavacProcessingEnvironment procEnvImpl = null; |
| 871 | |
| 872 | /** |
| 873 | * Check if we should process annotations. |
| 874 | * If so, and if no scanner is yet registered, then set up the DocCommentScanner |
| 875 | * to catch doc comments, and set keepComments so the parser records them in |
| 876 | * the compilation unit. |
| 877 | * |
| 878 | * @param processors user provided annotation processors to bypass |
| 879 | * discovery, {@code null} means that no processors were provided |
| 880 | */ |
| 881 | public void initProcessAnnotations(Iterable<? extends Processor> processors) { |
| 882 | // Process annotations if processing is not disabled and there |
| 883 | // is at least one Processor available. |
| 884 | Options options = Options.instance(context); |
| 885 | if (options.get("-proc:none") != null) { |
| 886 | processAnnotations = false; |
| 887 | } else if (procEnvImpl == null) { |
| 888 | procEnvImpl = new JavacProcessingEnvironment(context, processors); |
| 889 | processAnnotations = procEnvImpl.atLeastOneProcessor(); |
| 890 | |
| 891 | if (processAnnotations) { |
| 892 | if (context.get(Scanner.Factory.scannerFactoryKey) == null) |
| 893 | DocCommentScanner.Factory.preRegister(context); |
| 894 | options.put("save-parameter-names", "save-parameter-names"); |
| 895 | reader.saveParameterNames = true; |
| 896 | keepComments = true; |
| 897 | if (taskListener != null) |
| 898 | taskListener.started(new TaskEvent(TaskEvent.Kind.ANNOTATION_PROCESSING)); |
| 899 | |
| 900 | |
| 901 | } else { // free resources |
| 902 | procEnvImpl.close(); |
| 903 | } |
| 904 | } |
| 905 | } |
| 906 | |
| 907 | // TODO: called by JavacTaskImpl |
| 908 | public JavaCompiler processAnnotations(List<JCCompilationUnit> roots) throws IOException { |
| 909 | return processAnnotations(roots, List.<String>nil()); |
| 910 | } |
| 911 | |
| 912 | /** |
| 913 | * Process any anotations found in the specifed compilation units. |
| 914 | * @param roots a list of compilation units |
| 915 | * @return an instance of the compiler in which to complete the compilation |
| 916 | */ |
| 917 | public JavaCompiler processAnnotations(List<JCCompilationUnit> roots, |
| 918 | List<String> classnames) |
| 919 | throws IOException { // TODO: see TEMP note in JavacProcessingEnvironment |
| 920 | if (errorCount() != 0) { |
| 921 | // Errors were encountered. If todo is empty, then the |
| 922 | // encountered errors were parse errors. Otherwise, the |
| 923 | // errors were found during the enter phase which should |
| 924 | // be ignored when processing annotations. |
| 925 | |
| 926 | if (todo.isEmpty()) |
| 927 | return this; |
| 928 | } |
| 929 | |
| 930 | // ASSERT: processAnnotations and procEnvImpl should have been set up by |
| 931 | // by initProcessAnnotations |
| 932 | |
| 933 | // NOTE: The !classnames.isEmpty() checks should be refactored to Main. |
| 934 | |
| 935 | if (!processAnnotations) { |
| 936 | // If there are no annotation processors present, and |
| 937 | // annotation processing is to occur with compilation, |
| 938 | // emit a warning. |
| 939 | Options options = Options.instance(context); |
| 940 | if (options.get("-proc:only") != null) { |
| 941 | log.warning("proc.proc-only.requested.no.procs"); |
| 942 | todo.clear(); |
| 943 | } |
| 944 | // If not processing annotations, classnames must be empty |
| 945 | if (!classnames.isEmpty()) { |
| 946 | log.error("proc.no.explicit.annotation.processing.requested", |
| 947 | classnames); |
| 948 | } |
| 949 | return this; // continue regular compilation |
| 950 | } |
| 951 | |
| 952 | try { |
| 953 | List<ClassSymbol> classSymbols = List.nil(); |
| 954 | List<PackageSymbol> pckSymbols = List.nil(); |
| 955 | if (!classnames.isEmpty()) { |
| 956 | // Check for explicit request for annotation |
| 957 | // processing |
| 958 | if (!explicitAnnotationProcessingRequested()) { |
| 959 | log.error("proc.no.explicit.annotation.processing.requested", |
| 960 | classnames); |
| 961 | return this; // TODO: Will this halt compilation? |
| 962 | } else { |
| 963 | boolean errors = false; |
| 964 | for (String nameStr : classnames) { |
| 965 | Symbol sym = resolveIdent(nameStr); |
| 966 | if (sym == null || (sym.kind == Kinds.PCK && !processPcks)) { |
| 967 | log.error("proc.cant.find.class", nameStr); |
| 968 | errors = true; |
| 969 | continue; |
| 970 | } |
| 971 | try { |
| 972 | if (sym.kind == Kinds.PCK) |
| 973 | sym.complete(); |
| 974 | if (sym.exists()) { |
| 975 | Name name = names.fromString(nameStr); |
| 976 | if (sym.kind == Kinds.PCK) |
| 977 | pckSymbols = pckSymbols.prepend((PackageSymbol)sym); |
| 978 | else |
| 979 | classSymbols = classSymbols.prepend((ClassSymbol)sym); |
| 980 | continue; |
| 981 | } |
| 982 | assert sym.kind == Kinds.PCK; |
| 983 | log.warning("proc.package.does.not.exist", nameStr); |
| 984 | pckSymbols = pckSymbols.prepend((PackageSymbol)sym); |
| 985 | } catch (CompletionFailure e) { |
| 986 | log.error("proc.cant.find.class", nameStr); |
| 987 | errors = true; |
| 988 | continue; |
| 989 | } |
| 990 | } |
| 991 | if (errors) |
| 992 | return this; |
| 993 | } |
| 994 | } |
| 995 | JavaCompiler c = procEnvImpl.doProcessing(context, roots, classSymbols, pckSymbols); |
| 996 | if (c != this) |
| 997 | annotationProcessingOccurred = c.annotationProcessingOccurred = true; |
| 998 | return c; |
| 999 | } catch (CompletionFailure ex) { |
| 1000 | log.error("cant.access", ex.sym, ex.errmsg); |
| 1001 | return this; |
| 1002 | |
| 1003 | } |
| 1004 | } |
| 1005 | |
| 1006 | boolean explicitAnnotationProcessingRequested() { |
| 1007 | Options options = Options.instance(context); |
| 1008 | return |
| 1009 | explicitAnnotationProcessingRequested || |
| 1010 | options.get("-processor") != null || |
| 1011 | options.get("-processorpath") != null || |
| 1012 | options.get("-proc:only") != null || |
| 1013 | options.get("-Xprint") != null; |
| 1014 | } |
| 1015 | |
| 1016 | /** |
| 1017 | * Attribute a list of parse trees, such as found on the "todo" list. |
| 1018 | * Note that attributing classes may cause additional files to be |
| 1019 | * parsed and entered via the SourceCompleter. |
| 1020 | * Attribution of the entries in the list does not stop if any errors occur. |
| 1021 | * @returns a list of environments for attributd classes. |
| 1022 | */ |
| 1023 | public List<Env<AttrContext>> attribute(ListBuffer<Env<AttrContext>> envs) { |
| 1024 | ListBuffer<Env<AttrContext>> results = lb(); |
| 1025 | while (envs.nonEmpty()) |
| 1026 | results.append(attribute(envs.next())); |
| 1027 | return results.toList(); |
| 1028 | } |
| 1029 | |
| 1030 | /** |
| 1031 | * Attribute a parse tree. |
| 1032 | * @returns the attributed parse tree |
| 1033 | */ |
| 1034 | public Env<AttrContext> attribute(Env<AttrContext> env) { |
| 1035 | if (verboseCompilePolicy) |
| 1036 | log.printLines(log.noticeWriter, "[attribute " + env.enclClass.sym + "]"); |
| 1037 | if (verbose) |
| 1038 | printVerbose("checking.attribution", env.enclClass.sym); |
| 1039 | |
| 1040 | if (taskListener != null) { |
| 1041 | TaskEvent e = new TaskEvent(TaskEvent.Kind.ANALYZE, env.toplevel, env.enclClass.sym); |
| 1042 | taskListener.started(e); |
| 1043 | } |
| 1044 | |
| 1045 | JavaFileObject prev = log.useSource( |
| 1046 | env.enclClass.sym.sourcefile != null ? |
| 1047 | env.enclClass.sym.sourcefile : |
| 1048 | env.toplevel.sourcefile); |
| 1049 | try { |
| 1050 | attr.attribClass(env.tree.pos(), env.enclClass.sym); |
| 1051 | } |
| 1052 | finally { |
| 1053 | log.useSource(prev); |
| 1054 | } |
| 1055 | |
| 1056 | return env; |
| 1057 | } |
| 1058 | |
| 1059 | /** |
| 1060 | * Perform dataflow checks on attributed parse trees. |
| 1061 | * These include checks for definite assignment and unreachable statements. |
| 1062 | * If any errors occur, an empty list will be returned. |
| 1063 | * @returns the list of attributed parse trees |
| 1064 | */ |
| 1065 | public List<Env<AttrContext>> flow(List<Env<AttrContext>> envs) { |
| 1066 | ListBuffer<Env<AttrContext>> results = lb(); |
| 1067 | for (List<Env<AttrContext>> l = envs; l.nonEmpty(); l = l.tail) { |
| 1068 | flow(l.head, results); |
| 1069 | } |
| 1070 | return stopIfError(results); |
| 1071 | } |
| 1072 | |
| 1073 | /** |
| 1074 | * Perform dataflow checks on an attributed parse tree. |
| 1075 | */ |
| 1076 | public List<Env<AttrContext>> flow(Env<AttrContext> env) { |
| 1077 | ListBuffer<Env<AttrContext>> results = lb(); |
| 1078 | flow(env, results); |
| 1079 | return stopIfError(results); |
| 1080 | } |
| 1081 | |
| 1082 | /** |
| 1083 | * Perform dataflow checks on an attributed parse tree. |
| 1084 | */ |
| 1085 | protected void flow(Env<AttrContext> env, ListBuffer<Env<AttrContext>> results) { |
| 1086 | try { |
| 1087 | if (errorCount() > 0) |
| 1088 | return; |
| 1089 | |
| 1090 | if (relax || deferredSugar.contains(env)) { |
| 1091 | results.append(env); |
| 1092 | return; |
| 1093 | } |
| 1094 | |
| 1095 | if (verboseCompilePolicy) |
| 1096 | log.printLines(log.noticeWriter, "[flow " + env.enclClass.sym + "]"); |
| 1097 | JavaFileObject prev = log.useSource( |
| 1098 | env.enclClass.sym.sourcefile != null ? |
| 1099 | env.enclClass.sym.sourcefile : |
| 1100 | env.toplevel.sourcefile); |
| 1101 | try { |
| 1102 | make.at(Position.FIRSTPOS); |
| 1103 | TreeMaker localMake = make.forToplevel(env.toplevel); |
| 1104 | flow.analyzeTree(env.tree, localMake); |
| 1105 | |
| 1106 | if (errorCount() > 0) |
| 1107 | return; |
| 1108 | |
| 1109 | results.append(env); |
| 1110 | } |
| 1111 | finally { |
| 1112 | log.useSource(prev); |
| 1113 | } |
| 1114 | } |
| 1115 | finally { |
| 1116 | if (taskListener != null) { |
| 1117 | TaskEvent e = new TaskEvent(TaskEvent.Kind.ANALYZE, env.toplevel, env.enclClass.sym); |
| 1118 | taskListener.finished(e); |
| 1119 | } |
| 1120 | } |
| 1121 | } |
| 1122 | |
| 1123 | /** |
| 1124 | * Prepare attributed parse trees, in conjunction with their attribution contexts, |
| 1125 | * for source or code generation. |
| 1126 | * If any errors occur, an empty list will be returned. |
| 1127 | * @returns a list containing the classes to be generated |
| 1128 | */ |
| 1129 | public List<Pair<Env<AttrContext>, JCClassDecl>> desugar(List<Env<AttrContext>> envs) { |
| 1130 | ListBuffer<Pair<Env<AttrContext>, JCClassDecl>> results = lb(); |
| 1131 | for (List<Env<AttrContext>> l = envs; l.nonEmpty(); l = l.tail) |
| 1132 | desugar(l.head, results); |
| 1133 | return stopIfError(results); |
| 1134 | } |
| 1135 | |
| 1136 | /** |
| 1137 | * Prepare attributed parse trees, in conjunction with their attribution contexts, |
| 1138 | * for source or code generation. If the file was not listed on the command line, |
| 1139 | * the current implicitSourcePolicy is taken into account. |
| 1140 | * The preparation stops as soon as an error is found. |
| 1141 | */ |
| 1142 | protected void desugar(Env<AttrContext> env, ListBuffer<Pair<Env<AttrContext>, JCClassDecl>> results) { |
| 1143 | if (errorCount() > 0) |
| 1144 | return; |
| 1145 | |
| 1146 | if (implicitSourcePolicy == ImplicitSourcePolicy.NONE |
| 1147 | && !inputFiles.contains(env.toplevel.sourcefile)) { |
| 1148 | return; |
| 1149 | } |
| 1150 | |
| 1151 | if (desugarLater(env)) { |
| 1152 | if (verboseCompilePolicy) |
| 1153 | log.printLines(log.noticeWriter, "[defer " + env.enclClass.sym + "]"); |
| 1154 | todo.append(env); |
| 1155 | return; |
| 1156 | } |
| 1157 | deferredSugar.remove(env); |
| 1158 | |
| 1159 | if (verboseCompilePolicy) |
| 1160 | log.printLines(log.noticeWriter, "[desugar " + env.enclClass.sym + "]"); |
| 1161 | |
| 1162 | JavaFileObject prev = log.useSource(env.enclClass.sym.sourcefile != null ? |
| 1163 | env.enclClass.sym.sourcefile : |
| 1164 | env.toplevel.sourcefile); |
| 1165 | try { |
| 1166 | //save tree prior to rewriting |
| 1167 | JCTree untranslated = env.tree; |
| 1168 | |
| 1169 | make.at(Position.FIRSTPOS); |
| 1170 | TreeMaker localMake = make.forToplevel(env.toplevel); |
| 1171 | |
| 1172 | if (env.tree instanceof JCCompilationUnit) { |
| 1173 | if (!(stubOutput || sourceOutput || printFlat)) { |
| 1174 | List<JCTree> pdef = lower.translateTopLevelClass(env, env.tree, localMake); |
| 1175 | if (pdef.head != null) { |
| 1176 | assert pdef.tail.isEmpty(); |
| 1177 | results.append(new Pair<Env<AttrContext>, JCClassDecl>(env, (JCClassDecl)pdef.head)); |
| 1178 | } |
| 1179 | } |
| 1180 | return; |
| 1181 | } |
| 1182 | |
| 1183 | if (stubOutput) { |
| 1184 | //emit stub Java source file, only for compilation |
| 1185 | //units enumerated explicitly on the command line |
| 1186 | JCClassDecl cdef = (JCClassDecl)env.tree; |
| 1187 | if (untranslated instanceof JCClassDecl && |
| 1188 | rootClasses.contains((JCClassDecl)untranslated) && |
| 1189 | ((cdef.mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 || |
| 1190 | cdef.sym.packge().getQualifiedName() == names.java_lang)) { |
| 1191 | results.append(new Pair<Env<AttrContext>, JCClassDecl>(env, removeMethodBodies(cdef))); |
| 1192 | } |
| 1193 | return; |
| 1194 | } |
| 1195 | |
| 1196 | env.tree = transTypes.translateTopLevelClass(env.tree, localMake); |
| 1197 | |
| 1198 | if (errorCount() != 0) |
| 1199 | return; |
| 1200 | |
| 1201 | if (sourceOutput) { |
| 1202 | //emit standard Java source file, only for compilation |
| 1203 | //units enumerated explicitly on the command line |
| 1204 | JCClassDecl cdef = (JCClassDecl)env.tree; |
| 1205 | if (untranslated instanceof JCClassDecl && |
| 1206 | rootClasses.contains((JCClassDecl)untranslated)) { |
| 1207 | results.append(new Pair<Env<AttrContext>, JCClassDecl>(env, cdef)); |
| 1208 | } |
| 1209 | return; |
| 1210 | } |
| 1211 | |
| 1212 | //translate out inner classes |
| 1213 | List<JCTree> cdefs = lower.translateTopLevelClass(env, env.tree, localMake); |
| 1214 | |
| 1215 | if (errorCount() != 0) |
| 1216 | return; |
| 1217 | |
| 1218 | //generate code for each class |
| 1219 | for (List<JCTree> l = cdefs; l.nonEmpty(); l = l.tail) { |
| 1220 | JCClassDecl cdef = (JCClassDecl)l.head; |
| 1221 | results.append(new Pair<Env<AttrContext>, JCClassDecl>(env, cdef)); |
| 1222 | } |
| 1223 | } |
| 1224 | finally { |
| 1225 | log.useSource(prev); |
| 1226 | } |
| 1227 | |
| 1228 | } |
| 1229 | |
| 1230 | /** |
| 1231 | * Determine if a class needs to be desugared later. As erasure |
| 1232 | * (TransTypes) destroys information needed in flow analysis, we |
| 1233 | * need to ensure that supertypes are translated before derived |
| 1234 | * types are translated. |
| 1235 | */ |
| 1236 | public boolean desugarLater(final Env<AttrContext> env) { |
| 1237 | if (compilePolicy == CompilePolicy.BY_FILE) |
| 1238 | return false; |
| 1239 | if (!devVerbose && deferredSugar.contains(env)) |
| 1240 | // guarantee that compiler terminates |
| 1241 | return false; |
| 1242 | class ScanNested extends TreeScanner { |
| 1243 | Set<Symbol> externalSupers = new HashSet<Symbol>(); |
| 1244 | public void visitClassDef(JCClassDecl node) { |
| 1245 | Type st = types.supertype(node.sym.type); |
| 1246 | if (st.tag == TypeTags.CLASS) { |
| 1247 | ClassSymbol c = st.tsym.outermostClass(); |
| 1248 | Env<AttrContext> stEnv = enter.getEnv(c); |
| 1249 | if (stEnv != null && env != stEnv) |
| 1250 | externalSupers.add(st.tsym); |
| 1251 | } |
| 1252 | super.visitClassDef(node); |
| 1253 | } |
| 1254 | } |
| 1255 | ScanNested scanner = new ScanNested(); |
| 1256 | scanner.scan(env.tree); |
| 1257 | if (scanner.externalSupers.isEmpty()) |
| 1258 | return false; |
| 1259 | if (!deferredSugar.add(env) && devVerbose) { |
| 1260 | throw new AssertionError(env.enclClass.sym + " was deferred, " + |
| 1261 | "second time has these external super types " + |
| 1262 | scanner.externalSupers); |
| 1263 | } |
| 1264 | return true; |
| 1265 | } |
| 1266 | |
| 1267 | /** Generates the source or class file for a list of classes. |
| 1268 | * The decision to generate a source file or a class file is |
| 1269 | * based upon the compiler's options. |
| 1270 | * Generation stops if an error occurs while writing files. |
| 1271 | */ |
| 1272 | public void generate(List<Pair<Env<AttrContext>, JCClassDecl>> list) { |
| 1273 | generate(list, null); |
| 1274 | } |
| 1275 | |
| 1276 | public void generate(List<Pair<Env<AttrContext>, JCClassDecl>> list, ListBuffer<JavaFileObject> results) { |
| 1277 | boolean usePrintSource = (stubOutput || sourceOutput || printFlat); |
| 1278 | |
| 1279 | for (List<Pair<Env<AttrContext>, JCClassDecl>> l = list; l.nonEmpty(); l = l.tail) { |
| 1280 | Pair<Env<AttrContext>, JCClassDecl> x = l.head; |
| 1281 | Env<AttrContext> env = x.fst; |
| 1282 | JCClassDecl cdef = x.snd; |
| 1283 | |
| 1284 | if (verboseCompilePolicy) { |
| 1285 | log.printLines(log.noticeWriter, "[generate " |
| 1286 | + (usePrintSource ? " source" : "code") |
| 1287 | + " " + env.enclClass.sym + "]"); |
| 1288 | } |
| 1289 | |
| 1290 | if (taskListener != null) { |
| 1291 | TaskEvent e = new TaskEvent(TaskEvent.Kind.GENERATE, env.toplevel, cdef.sym); |
| 1292 | taskListener.started(e); |
| 1293 | } |
| 1294 | |
| 1295 | JavaFileObject prev = log.useSource(env.enclClass.sym.sourcefile != null ? |
| 1296 | env.enclClass.sym.sourcefile : |
| 1297 | env.toplevel.sourcefile); |
| 1298 | try { |
| 1299 | JavaFileObject file; |
| 1300 | if (usePrintSource) |
| 1301 | file = printSource(env, cdef); |
| 1302 | else |
| 1303 | file = genCode(env, cdef); |
| 1304 | if (results != null && file != null) |
| 1305 | results.append(file); |
| 1306 | } catch (IOException ex) { |
| 1307 | log.error(cdef.pos(), "class.cant.write", |
| 1308 | cdef.sym, ex.getMessage()); |
| 1309 | return; |
| 1310 | } finally { |
| 1311 | log.useSource(prev); |
| 1312 | } |
| 1313 | |
| 1314 | if (taskListener != null) { |
| 1315 | TaskEvent e = new TaskEvent(TaskEvent.Kind.GENERATE, env.toplevel, cdef.sym); |
| 1316 | taskListener.finished(e); |
| 1317 | } |
| 1318 | } |
| 1319 | } |
| 1320 | |
| 1321 | // where |
| 1322 | Map<JCCompilationUnit, List<Env<AttrContext>>> groupByFile(List<Env<AttrContext>> list) { |
| 1323 | // use a LinkedHashMap to preserve the order of the original list as much as possible |
| 1324 | Map<JCCompilationUnit, List<Env<AttrContext>>> map = new LinkedHashMap<JCCompilationUnit, List<Env<AttrContext>>>(); |
| 1325 | Set<JCCompilationUnit> fixupSet = new HashSet<JCTree.JCCompilationUnit>(); |
| 1326 | for (List<Env<AttrContext>> l = list; l.nonEmpty(); l = l.tail) { |
| 1327 | Env<AttrContext> env = l.head; |
| 1328 | List<Env<AttrContext>> sublist = map.get(env.toplevel); |
| 1329 | if (sublist == null) |
| 1330 | sublist = List.of(env); |
| 1331 | else { |
| 1332 | // this builds the list for the file in reverse order, so make a note |
| 1333 | // to reverse the list before returning. |
| 1334 | sublist = sublist.prepend(env); |
| 1335 | fixupSet.add(env.toplevel); |
| 1336 | } |
| 1337 | map.put(env.toplevel, sublist); |
| 1338 | } |
| 1339 | // fixup any lists that need reversing back to the correct order |
| 1340 | for (JCTree.JCCompilationUnit tree: fixupSet) |
| 1341 | map.put(tree, map.get(tree).reverse()); |
| 1342 | return map; |
| 1343 | } |
| 1344 | |
| 1345 | JCClassDecl removeMethodBodies(JCClassDecl cdef) { |
| 1346 | final boolean isInterface = (cdef.mods.flags & Flags.INTERFACE) != 0; |
| 1347 | class MethodBodyRemover extends TreeTranslator { |
| 1348 | public void visitMethodDef(JCMethodDecl tree) { |
| 1349 | tree.mods.flags &= ~Flags.SYNCHRONIZED; |
| 1350 | for (JCVariableDecl vd : tree.params) |
| 1351 | vd.mods.flags &= ~Flags.FINAL; |
| 1352 | tree.body = null; |
| 1353 | super.visitMethodDef(tree); |
| 1354 | } |
| 1355 | public void visitVarDef(JCVariableDecl tree) { |
| 1356 | if (tree.init != null && tree.init.type.constValue() == null) |
| 1357 | tree.init = null; |
| 1358 | super.visitVarDef(tree); |
| 1359 | } |
| 1360 | public void visitClassDef(JCClassDecl tree) { |
| 1361 | ListBuffer<JCTree> newdefs = lb(); |
| 1362 | for (List<JCTree> it = tree.defs; it.tail != null; it = it.tail) { |
| 1363 | JCTree t = it.head; |
| 1364 | switch (t.getTag()) { |
| 1365 | case JCTree.CLASSDEF: |
| 1366 | if (isInterface || |
| 1367 | (((JCClassDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 || |
| 1368 | (((JCClassDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCClassDecl) t).sym.packge().getQualifiedName() == names.java_lang) |
| 1369 | newdefs.append(t); |
| 1370 | break; |
| 1371 | case JCTree.METHODDEF: |
| 1372 | if (isInterface || |
| 1373 | (((JCMethodDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 || |
| 1374 | ((JCMethodDecl) t).sym.name == names.init || |
| 1375 | (((JCMethodDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCMethodDecl) t).sym.packge().getQualifiedName() == names.java_lang) |
| 1376 | newdefs.append(t); |
| 1377 | break; |
| 1378 | case JCTree.VARDEF: |
| 1379 | if (isInterface || (((JCVariableDecl) t).mods.flags & (Flags.PROTECTED|Flags.PUBLIC)) != 0 || |
| 1380 | (((JCVariableDecl) t).mods.flags & (Flags.PRIVATE)) == 0 && ((JCVariableDecl) t).sym.packge().getQualifiedName() == names.java_lang) |
| 1381 | newdefs.append(t); |
| 1382 | break; |
| 1383 | default: |
| 1384 | break; |
| 1385 | } |
| 1386 | } |
| 1387 | tree.defs = newdefs.toList(); |
| 1388 | super.visitClassDef(tree); |
| 1389 | } |
| 1390 | } |
| 1391 | MethodBodyRemover r = new MethodBodyRemover(); |
| 1392 | return r.translate(cdef); |
| 1393 | } |
| 1394 | |
| 1395 | public void reportDeferredDiagnostics() { |
| 1396 | if (annotationProcessingOccurred |
| 1397 | && implicitSourceFilesRead |
| 1398 | && implicitSourcePolicy == ImplicitSourcePolicy.UNSET) { |
| 1399 | if (explicitAnnotationProcessingRequested()) |
| 1400 | log.warning("proc.use.implicit"); |
| 1401 | else |
| 1402 | log.warning("proc.use.proc.or.implicit"); |
| 1403 | } |
| 1404 | chk.reportDeferredDiagnostics(); |
| 1405 | } |
| 1406 | |
| 1407 | /** Close the compiler, flushing the logs |
| 1408 | */ |
| 1409 | public void close() { |
| 1410 | close(true); |
| 1411 | } |
| 1412 | |
| 1413 | private void close(boolean disposeNames) { |
| 1414 | rootClasses = null; |
| 1415 | reader = null; |
| 1416 | make = null; |
| 1417 | writer = null; |
| 1418 | enter = null; |
| 1419 | if (todo != null) |
| 1420 | todo.clear(); |
| 1421 | todo = null; |
| 1422 | parserFactory = null; |
| 1423 | syms = null; |
| 1424 | source = null; |
| 1425 | attr = null; |
| 1426 | chk = null; |
| 1427 | gen = null; |
| 1428 | flow = null; |
| 1429 | transTypes = null; |
| 1430 | lower = null; |
| 1431 | annotate = null; |
| 1432 | types = null; |
| 1433 | |
| 1434 | log.flush(); |
| 1435 | try { |
| 1436 | fileManager.flush(); |
| 1437 | } catch (IOException e) { |
| 1438 | throw new Abort(e); |
| 1439 | } finally { |
| 1440 | if (names != null && disposeNames) |
| 1441 | names.dispose(); |
| 1442 | names = null; |
| 1443 | } |
| 1444 | } |
| 1445 | |
| 1446 | /** Output for "-verbose" option. |
| 1447 | * @param key The key to look up the correct internationalized string. |
| 1448 | * @param arg An argument for substitution into the output string. |
| 1449 | */ |
| 1450 | protected void printVerbose(String key, Object arg) { |
| 1451 | Log.printLines(log.noticeWriter, log.getLocalizedString("verbose." + key, arg)); |
| 1452 | } |
| 1453 | |
| 1454 | /** Print numbers of errors and warnings. |
| 1455 | */ |
| 1456 | protected void printCount(String kind, int count) { |
| 1457 | if (count != 0) { |
| 1458 | String text; |
| 1459 | if (count == 1) |
| 1460 | text = log.getLocalizedString("count." + kind, String.valueOf(count)); |
| 1461 | else |
| 1462 | text = log.getLocalizedString("count." + kind + ".plural", String.valueOf(count)); |
| 1463 | Log.printLines(log.errWriter, text); |
| 1464 | log.errWriter.flush(); |
| 1465 | } |
| 1466 | } |
| 1467 | |
| 1468 | private static long now() { |
| 1469 | return System.currentTimeMillis(); |
| 1470 | } |
| 1471 | |
| 1472 | private static long elapsed(long then) { |
| 1473 | return now() - then; |
| 1474 | } |
| 1475 | |
| 1476 | public void initRound(JavaCompiler prev) { |
| 1477 | keepComments = prev.keepComments; |
| 1478 | start_msec = prev.start_msec; |
| 1479 | hasBeenUsed = true; |
| 1480 | } |
| 1481 | |
| 1482 | public static void enableLogging() { |
| 1483 | Logger logger = Logger.getLogger(com.sun.tools.javac.Main.class.getPackage().getName()); |
| 1484 | logger.setLevel(Level.ALL); |
| 1485 | for (Handler h : logger.getParent().getHandlers()) { |
| 1486 | h.setLevel(Level.ALL); |
| 1487 | } |
| 1488 | |
| 1489 | } |
| 1490 | } |