| 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.jvm; |
| 27 | |
| 28 | import java.io.*; |
| 29 | import java.net.URI; |
| 30 | import java.nio.CharBuffer; |
| 31 | import java.util.EnumSet; |
| 32 | import java.util.HashMap; |
| 33 | import java.util.Map; |
| 34 | import java.util.Set; |
| 35 | import javax.lang.model.SourceVersion; |
| 36 | import javax.tools.JavaFileObject; |
| 37 | import javax.tools.JavaFileManager; |
| 38 | import javax.tools.StandardJavaFileManager; |
| 39 | |
| 40 | import com.sun.tools.javac.comp.Annotate; |
| 41 | import com.sun.tools.javac.code.*; |
| 42 | import com.sun.tools.javac.code.Type.*; |
| 43 | import com.sun.tools.javac.code.Symbol.*; |
| 44 | import com.sun.tools.javac.code.Symtab; |
| 45 | import com.sun.tools.javac.util.*; |
| 46 | import com.sun.tools.javac.util.List; |
| 47 | |
| 48 | import static com.sun.tools.javac.code.Flags.*; |
| 49 | import static com.sun.tools.javac.code.Kinds.*; |
| 50 | import static com.sun.tools.javac.code.TypeTags.*; |
| 51 | import com.sun.tools.javac.jvm.ClassFile.NameAndType; |
| 52 | import javax.tools.JavaFileManager.Location; |
| 53 | import static javax.tools.StandardLocation.*; |
| 54 | |
| 55 | /** This class provides operations to read a classfile into an internal |
| 56 | * representation. The internal representation is anchored in a |
| 57 | * ClassSymbol which contains in its scope symbol representations |
| 58 | * for all other definitions in the classfile. Top-level Classes themselves |
| 59 | * appear as members of the scopes of PackageSymbols. |
| 60 | * |
| 61 | * <p><b>This is NOT part of any API supported by Sun Microsystems. If |
| 62 | * you write code that depends on this, you do so at your own risk. |
| 63 | * This code and its internal interfaces are subject to change or |
| 64 | * deletion without notice.</b> |
| 65 | */ |
| 66 | public class ClassReader extends ClassFile implements Completer { |
| 67 | /** The context key for the class reader. */ |
| 68 | protected static final Context.Key<ClassReader> classReaderKey = |
| 69 | new Context.Key<ClassReader>(); |
| 70 | |
| 71 | Annotate annotate; |
| 72 | |
| 73 | /** Switch: verbose output. |
| 74 | */ |
| 75 | boolean verbose; |
| 76 | |
| 77 | /** Switch: check class file for correct minor version, unrecognized |
| 78 | * attributes. |
| 79 | */ |
| 80 | boolean checkClassFile; |
| 81 | |
| 82 | /** Switch: read constant pool and code sections. This switch is initially |
| 83 | * set to false but can be turned on from outside. |
| 84 | */ |
| 85 | public boolean readAllOfClassFile = false; |
| 86 | |
| 87 | /** Switch: read GJ signature information. |
| 88 | */ |
| 89 | boolean allowGenerics; |
| 90 | |
| 91 | /** Switch: read varargs attribute. |
| 92 | */ |
| 93 | boolean allowVarargs; |
| 94 | |
| 95 | /** Switch: allow annotations. |
| 96 | */ |
| 97 | boolean allowAnnotations; |
| 98 | |
| 99 | /** Switch: preserve parameter names from the variable table. |
| 100 | */ |
| 101 | public boolean saveParameterNames; |
| 102 | |
| 103 | /** |
| 104 | * Switch: cache completion failures unless -XDdev is used |
| 105 | */ |
| 106 | private boolean cacheCompletionFailure; |
| 107 | |
| 108 | /** |
| 109 | * Switch: prefer source files instead of newer when both source |
| 110 | * and class are available |
| 111 | **/ |
| 112 | public boolean preferSource; |
| 113 | |
| 114 | /** The log to use for verbose output |
| 115 | */ |
| 116 | final Log log; |
| 117 | |
| 118 | /** The symbol table. */ |
| 119 | Symtab syms; |
| 120 | |
| 121 | Types types; |
| 122 | |
| 123 | /** The name table. */ |
| 124 | final Name.Table names; |
| 125 | |
| 126 | /** Force a completion failure on this name |
| 127 | */ |
| 128 | final Name completionFailureName; |
| 129 | |
| 130 | /** Access to files |
| 131 | */ |
| 132 | private final JavaFileManager fileManager; |
| 133 | |
| 134 | /** Can be reassigned from outside: |
| 135 | * the completer to be used for ".java" files. If this remains unassigned |
| 136 | * ".java" files will not be loaded. |
| 137 | */ |
| 138 | public SourceCompleter sourceCompleter = null; |
| 139 | |
| 140 | /** A hashtable containing the encountered top-level and member classes, |
| 141 | * indexed by flat names. The table does not contain local classes. |
| 142 | */ |
| 143 | private Map<Name,ClassSymbol> classes; |
| 144 | |
| 145 | /** A hashtable containing the encountered packages. |
| 146 | */ |
| 147 | private Map<Name, PackageSymbol> packages; |
| 148 | |
| 149 | /** The current scope where type variables are entered. |
| 150 | */ |
| 151 | protected Scope typevars; |
| 152 | |
| 153 | /** The path name of the class file currently being read. |
| 154 | */ |
| 155 | protected JavaFileObject currentClassFile = null; |
| 156 | |
| 157 | /** The class or method currently being read. |
| 158 | */ |
| 159 | protected Symbol currentOwner = null; |
| 160 | |
| 161 | /** The buffer containing the currently read class file. |
| 162 | */ |
| 163 | byte[] buf = new byte[0x0fff0]; |
| 164 | |
| 165 | /** The current input pointer. |
| 166 | */ |
| 167 | int bp; |
| 168 | |
| 169 | /** The objects of the constant pool. |
| 170 | */ |
| 171 | Object[] poolObj; |
| 172 | |
| 173 | /** For every constant pool entry, an index into buf where the |
| 174 | * defining section of the entry is found. |
| 175 | */ |
| 176 | int[] poolIdx; |
| 177 | |
| 178 | /** Get the ClassReader instance for this invocation. */ |
| 179 | public static ClassReader instance(Context context) { |
| 180 | ClassReader instance = context.get(classReaderKey); |
| 181 | if (instance == null) |
| 182 | instance = new ClassReader(context, true); |
| 183 | return instance; |
| 184 | } |
| 185 | |
| 186 | /** Initialize classes and packages, treating this as the definitive classreader. */ |
| 187 | public void init(Symtab syms) { |
| 188 | init(syms, true); |
| 189 | } |
| 190 | |
| 191 | /** Initialize classes and packages, optionally treating this as |
| 192 | * the definitive classreader. |
| 193 | */ |
| 194 | private void init(Symtab syms, boolean definitive) { |
| 195 | if (classes != null) return; |
| 196 | |
| 197 | if (definitive) { |
| 198 | assert packages == null || packages == syms.packages; |
| 199 | packages = syms.packages; |
| 200 | assert classes == null || classes == syms.classes; |
| 201 | classes = syms.classes; |
| 202 | } else { |
| 203 | packages = new HashMap<Name, PackageSymbol>(); |
| 204 | classes = new HashMap<Name, ClassSymbol>(); |
| 205 | } |
| 206 | |
| 207 | packages.put(names.empty, syms.rootPackage); |
| 208 | syms.rootPackage.completer = this; |
| 209 | syms.unnamedPackage.completer = this; |
| 210 | } |
| 211 | |
| 212 | /** Construct a new class reader, optionally treated as the |
| 213 | * definitive classreader for this invocation. |
| 214 | */ |
| 215 | protected ClassReader(Context context, boolean definitive) { |
| 216 | if (definitive) context.put(classReaderKey, this); |
| 217 | |
| 218 | names = Name.Table.instance(context); |
| 219 | syms = Symtab.instance(context); |
| 220 | types = Types.instance(context); |
| 221 | fileManager = context.get(JavaFileManager.class); |
| 222 | if (fileManager == null) |
| 223 | throw new AssertionError("FileManager initialization error"); |
| 224 | |
| 225 | init(syms, definitive); |
| 226 | log = Log.instance(context); |
| 227 | |
| 228 | Options options = Options.instance(context); |
| 229 | annotate = Annotate.instance(context); |
| 230 | verbose = options.get("-verbose") != null; |
| 231 | checkClassFile = options.get("-checkclassfile") != null; |
| 232 | Source source = Source.instance(context); |
| 233 | allowGenerics = source.allowGenerics(); |
| 234 | allowVarargs = source.allowVarargs(); |
| 235 | allowAnnotations = source.allowAnnotations(); |
| 236 | saveParameterNames = options.get("save-parameter-names") != null; |
| 237 | cacheCompletionFailure = options.get("dev") == null; |
| 238 | preferSource = "source".equals(options.get("-Xprefer")); |
| 239 | |
| 240 | completionFailureName = |
| 241 | (options.get("failcomplete") != null) |
| 242 | ? names.fromString(options.get("failcomplete")) |
| 243 | : null; |
| 244 | |
| 245 | typevars = new Scope(syms.noSymbol); |
| 246 | } |
| 247 | |
| 248 | /** Add member to class unless it is synthetic. |
| 249 | */ |
| 250 | private void enterMember(ClassSymbol c, Symbol sym) { |
| 251 | if ((sym.flags_field & (SYNTHETIC|BRIDGE)) != SYNTHETIC) |
| 252 | c.members_field.enter(sym); |
| 253 | } |
| 254 | |
| 255 | /************************************************************************ |
| 256 | * Error Diagnoses |
| 257 | ***********************************************************************/ |
| 258 | |
| 259 | public static class BadClassFile extends CompletionFailure { |
| 260 | private static final long serialVersionUID = 0; |
| 261 | |
| 262 | /** |
| 263 | * @param msg A localized message. |
| 264 | */ |
| 265 | public BadClassFile(ClassSymbol c, Object cname, Object msg) { |
| 266 | super(c, Log.getLocalizedString("bad.class.file.header", |
| 267 | cname, msg)); |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | public BadClassFile badClassFile(String key, Object... args) { |
| 272 | return new BadClassFile ( |
| 273 | currentOwner.enclClass(), |
| 274 | currentClassFile, |
| 275 | Log.getLocalizedString(key, args)); |
| 276 | } |
| 277 | |
| 278 | /************************************************************************ |
| 279 | * Buffer Access |
| 280 | ***********************************************************************/ |
| 281 | |
| 282 | /** Read a character. |
| 283 | */ |
| 284 | char nextChar() { |
| 285 | return (char)(((buf[bp++] & 0xFF) << 8) + (buf[bp++] & 0xFF)); |
| 286 | } |
| 287 | |
| 288 | /** Read an integer. |
| 289 | */ |
| 290 | int nextInt() { |
| 291 | return |
| 292 | ((buf[bp++] & 0xFF) << 24) + |
| 293 | ((buf[bp++] & 0xFF) << 16) + |
| 294 | ((buf[bp++] & 0xFF) << 8) + |
| 295 | (buf[bp++] & 0xFF); |
| 296 | } |
| 297 | |
| 298 | /** Extract a character at position bp from buf. |
| 299 | */ |
| 300 | char getChar(int bp) { |
| 301 | return |
| 302 | (char)(((buf[bp] & 0xFF) << 8) + (buf[bp+1] & 0xFF)); |
| 303 | } |
| 304 | |
| 305 | /** Extract an integer at position bp from buf. |
| 306 | */ |
| 307 | int getInt(int bp) { |
| 308 | return |
| 309 | ((buf[bp] & 0xFF) << 24) + |
| 310 | ((buf[bp+1] & 0xFF) << 16) + |
| 311 | ((buf[bp+2] & 0xFF) << 8) + |
| 312 | (buf[bp+3] & 0xFF); |
| 313 | } |
| 314 | |
| 315 | |
| 316 | /** Extract a long integer at position bp from buf. |
| 317 | */ |
| 318 | long getLong(int bp) { |
| 319 | DataInputStream bufin = |
| 320 | new DataInputStream(new ByteArrayInputStream(buf, bp, 8)); |
| 321 | try { |
| 322 | return bufin.readLong(); |
| 323 | } catch (IOException e) { |
| 324 | throw new AssertionError(e); |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | /** Extract a float at position bp from buf. |
| 329 | */ |
| 330 | float getFloat(int bp) { |
| 331 | DataInputStream bufin = |
| 332 | new DataInputStream(new ByteArrayInputStream(buf, bp, 4)); |
| 333 | try { |
| 334 | return bufin.readFloat(); |
| 335 | } catch (IOException e) { |
| 336 | throw new AssertionError(e); |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | /** Extract a double at position bp from buf. |
| 341 | */ |
| 342 | double getDouble(int bp) { |
| 343 | DataInputStream bufin = |
| 344 | new DataInputStream(new ByteArrayInputStream(buf, bp, 8)); |
| 345 | try { |
| 346 | return bufin.readDouble(); |
| 347 | } catch (IOException e) { |
| 348 | throw new AssertionError(e); |
| 349 | } |
| 350 | } |
| 351 | |
| 352 | /************************************************************************ |
| 353 | * Constant Pool Access |
| 354 | ***********************************************************************/ |
| 355 | |
| 356 | /** Index all constant pool entries, writing their start addresses into |
| 357 | * poolIdx. |
| 358 | */ |
| 359 | void indexPool() { |
| 360 | poolIdx = new int[nextChar()]; |
| 361 | poolObj = new Object[poolIdx.length]; |
| 362 | int i = 1; |
| 363 | while (i < poolIdx.length) { |
| 364 | poolIdx[i++] = bp; |
| 365 | byte tag = buf[bp++]; |
| 366 | switch (tag) { |
| 367 | case CONSTANT_Utf8: case CONSTANT_Unicode: { |
| 368 | int len = nextChar(); |
| 369 | bp = bp + len; |
| 370 | break; |
| 371 | } |
| 372 | case CONSTANT_Class: |
| 373 | case CONSTANT_String: |
| 374 | bp = bp + 2; |
| 375 | break; |
| 376 | case CONSTANT_Fieldref: |
| 377 | case CONSTANT_Methodref: |
| 378 | case CONSTANT_InterfaceMethodref: |
| 379 | case CONSTANT_NameandType: |
| 380 | case CONSTANT_Integer: |
| 381 | case CONSTANT_Float: |
| 382 | bp = bp + 4; |
| 383 | break; |
| 384 | case CONSTANT_Long: |
| 385 | case CONSTANT_Double: |
| 386 | bp = bp + 8; |
| 387 | i++; |
| 388 | break; |
| 389 | default: |
| 390 | throw badClassFile("bad.const.pool.tag.at", |
| 391 | Byte.toString(tag), |
| 392 | Integer.toString(bp -1)); |
| 393 | } |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | /** Read constant pool entry at start address i, use pool as a cache. |
| 398 | */ |
| 399 | Object readPool(int i) { |
| 400 | Object result = poolObj[i]; |
| 401 | if (result != null) return result; |
| 402 | |
| 403 | int index = poolIdx[i]; |
| 404 | if (index == 0) return null; |
| 405 | |
| 406 | byte tag = buf[index]; |
| 407 | switch (tag) { |
| 408 | case CONSTANT_Utf8: |
| 409 | poolObj[i] = names.fromUtf(buf, index + 3, getChar(index + 1)); |
| 410 | break; |
| 411 | case CONSTANT_Unicode: |
| 412 | throw badClassFile("unicode.str.not.supported"); |
| 413 | case CONSTANT_Class: |
| 414 | poolObj[i] = readClassOrType(getChar(index + 1)); |
| 415 | break; |
| 416 | case CONSTANT_String: |
| 417 | // FIXME: (footprint) do not use toString here |
| 418 | poolObj[i] = readName(getChar(index + 1)).toString(); |
| 419 | break; |
| 420 | case CONSTANT_Fieldref: { |
| 421 | ClassSymbol owner = readClassSymbol(getChar(index + 1)); |
| 422 | NameAndType nt = (NameAndType)readPool(getChar(index + 3)); |
| 423 | poolObj[i] = new VarSymbol(0, nt.name, nt.type, owner); |
| 424 | break; |
| 425 | } |
| 426 | case CONSTANT_Methodref: |
| 427 | case CONSTANT_InterfaceMethodref: { |
| 428 | ClassSymbol owner = readClassSymbol(getChar(index + 1)); |
| 429 | NameAndType nt = (NameAndType)readPool(getChar(index + 3)); |
| 430 | poolObj[i] = new MethodSymbol(0, nt.name, nt.type, owner); |
| 431 | break; |
| 432 | } |
| 433 | case CONSTANT_NameandType: |
| 434 | poolObj[i] = new NameAndType( |
| 435 | readName(getChar(index + 1)), |
| 436 | readType(getChar(index + 3))); |
| 437 | break; |
| 438 | case CONSTANT_Integer: |
| 439 | poolObj[i] = getInt(index + 1); |
| 440 | break; |
| 441 | case CONSTANT_Float: |
| 442 | poolObj[i] = new Float(getFloat(index + 1)); |
| 443 | break; |
| 444 | case CONSTANT_Long: |
| 445 | poolObj[i] = new Long(getLong(index + 1)); |
| 446 | break; |
| 447 | case CONSTANT_Double: |
| 448 | poolObj[i] = new Double(getDouble(index + 1)); |
| 449 | break; |
| 450 | default: |
| 451 | throw badClassFile("bad.const.pool.tag", Byte.toString(tag)); |
| 452 | } |
| 453 | return poolObj[i]; |
| 454 | } |
| 455 | |
| 456 | /** Read signature and convert to type. |
| 457 | */ |
| 458 | Type readType(int i) { |
| 459 | int index = poolIdx[i]; |
| 460 | return sigToType(buf, index + 3, getChar(index + 1)); |
| 461 | } |
| 462 | |
| 463 | /** If name is an array type or class signature, return the |
| 464 | * corresponding type; otherwise return a ClassSymbol with given name. |
| 465 | */ |
| 466 | Object readClassOrType(int i) { |
| 467 | int index = poolIdx[i]; |
| 468 | int len = getChar(index + 1); |
| 469 | int start = index + 3; |
| 470 | assert buf[start] == '[' || buf[start + len - 1] != ';'; |
| 471 | // by the above assertion, the following test can be |
| 472 | // simplified to (buf[start] == '[') |
| 473 | return (buf[start] == '[' || buf[start + len - 1] == ';') |
| 474 | ? (Object)sigToType(buf, start, len) |
| 475 | : (Object)enterClass(names.fromUtf(internalize(buf, start, |
| 476 | len))); |
| 477 | } |
| 478 | |
| 479 | /** Read signature and convert to type parameters. |
| 480 | */ |
| 481 | List<Type> readTypeParams(int i) { |
| 482 | int index = poolIdx[i]; |
| 483 | return sigToTypeParams(buf, index + 3, getChar(index + 1)); |
| 484 | } |
| 485 | |
| 486 | /** Read class entry. |
| 487 | */ |
| 488 | ClassSymbol readClassSymbol(int i) { |
| 489 | return (ClassSymbol) (readPool(i)); |
| 490 | } |
| 491 | |
| 492 | /** Read name. |
| 493 | */ |
| 494 | Name readName(int i) { |
| 495 | return (Name) (readPool(i)); |
| 496 | } |
| 497 | |
| 498 | /************************************************************************ |
| 499 | * Reading Types |
| 500 | ***********************************************************************/ |
| 501 | |
| 502 | /** The unread portion of the currently read type is |
| 503 | * signature[sigp..siglimit-1]. |
| 504 | */ |
| 505 | byte[] signature; |
| 506 | int sigp; |
| 507 | int siglimit; |
| 508 | boolean sigEnterPhase = false; |
| 509 | |
| 510 | /** Convert signature to type, where signature is a name. |
| 511 | */ |
| 512 | Type sigToType(Name sig) { |
| 513 | return sig == null |
| 514 | ? null |
| 515 | : sigToType(sig.table.names, sig.index, sig.len); |
| 516 | } |
| 517 | |
| 518 | /** Convert signature to type, where signature is a byte array segment. |
| 519 | */ |
| 520 | Type sigToType(byte[] sig, int offset, int len) { |
| 521 | signature = sig; |
| 522 | sigp = offset; |
| 523 | siglimit = offset + len; |
| 524 | return sigToType(); |
| 525 | } |
| 526 | |
| 527 | /** Convert signature to type, where signature is implicit. |
| 528 | */ |
| 529 | Type sigToType() { |
| 530 | switch ((char) signature[sigp]) { |
| 531 | case 'T': |
| 532 | sigp++; |
| 533 | int start = sigp; |
| 534 | while (signature[sigp] != ';') sigp++; |
| 535 | sigp++; |
| 536 | return sigEnterPhase |
| 537 | ? Type.noType |
| 538 | : findTypeVar(names.fromUtf(signature, start, sigp - 1 - start)); |
| 539 | case '+': { |
| 540 | sigp++; |
| 541 | Type t = sigToType(); |
| 542 | return new WildcardType(t, BoundKind.EXTENDS, |
| 543 | syms.boundClass); |
| 544 | } |
| 545 | case '*': |
| 546 | sigp++; |
| 547 | return new WildcardType(syms.objectType, BoundKind.UNBOUND, |
| 548 | syms.boundClass); |
| 549 | case '-': { |
| 550 | sigp++; |
| 551 | Type t = sigToType(); |
| 552 | return new WildcardType(t, BoundKind.SUPER, |
| 553 | syms.boundClass); |
| 554 | } |
| 555 | case 'B': |
| 556 | sigp++; |
| 557 | return syms.byteType; |
| 558 | case 'C': |
| 559 | sigp++; |
| 560 | return syms.charType; |
| 561 | case 'D': |
| 562 | sigp++; |
| 563 | return syms.doubleType; |
| 564 | case 'F': |
| 565 | sigp++; |
| 566 | return syms.floatType; |
| 567 | case 'I': |
| 568 | sigp++; |
| 569 | return syms.intType; |
| 570 | case 'J': |
| 571 | sigp++; |
| 572 | return syms.longType; |
| 573 | case 'L': |
| 574 | { |
| 575 | // int oldsigp = sigp; |
| 576 | Type t = classSigToType(); |
| 577 | if (sigp < siglimit && signature[sigp] == '.') |
| 578 | throw badClassFile("deprecated inner class signature syntax " + |
| 579 | "(please recompile from source)"); |
| 580 | /* |
| 581 | System.err.println(" decoded " + |
| 582 | new String(signature, oldsigp, sigp-oldsigp) + |
| 583 | " => " + t + " outer " + t.outer()); |
| 584 | */ |
| 585 | return t; |
| 586 | } |
| 587 | case 'S': |
| 588 | sigp++; |
| 589 | return syms.shortType; |
| 590 | case 'V': |
| 591 | sigp++; |
| 592 | return syms.voidType; |
| 593 | case 'Z': |
| 594 | sigp++; |
| 595 | return syms.booleanType; |
| 596 | case '[': |
| 597 | sigp++; |
| 598 | return new ArrayType(sigToType(), syms.arrayClass); |
| 599 | case '(': |
| 600 | sigp++; |
| 601 | List<Type> argtypes = sigToTypes(')'); |
| 602 | Type restype = sigToType(); |
| 603 | List<Type> thrown = List.nil(); |
| 604 | while (signature[sigp] == '^') { |
| 605 | sigp++; |
| 606 | thrown = thrown.prepend(sigToType()); |
| 607 | } |
| 608 | return new MethodType(argtypes, |
| 609 | restype, |
| 610 | thrown.reverse(), |
| 611 | syms.methodClass); |
| 612 | case '<': |
| 613 | typevars = typevars.dup(currentOwner); |
| 614 | Type poly = new ForAll(sigToTypeParams(), sigToType()); |
| 615 | typevars = typevars.leave(); |
| 616 | return poly; |
| 617 | default: |
| 618 | throw badClassFile("bad.signature", |
| 619 | Convert.utf2string(signature, sigp, 10)); |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | byte[] signatureBuffer = new byte[0]; |
| 624 | int sbp = 0; |
| 625 | /** Convert class signature to type, where signature is implicit. |
| 626 | */ |
| 627 | Type classSigToType() { |
| 628 | if (signature[sigp] != 'L') |
| 629 | throw badClassFile("bad.class.signature", |
| 630 | Convert.utf2string(signature, sigp, 10)); |
| 631 | sigp++; |
| 632 | Type outer = Type.noType; |
| 633 | int startSbp = sbp; |
| 634 | |
| 635 | while (true) { |
| 636 | final byte c = signature[sigp++]; |
| 637 | switch (c) { |
| 638 | |
| 639 | case ';': { // end |
| 640 | ClassSymbol t = enterClass(names.fromUtf(signatureBuffer, |
| 641 | startSbp, |
| 642 | sbp - startSbp)); |
| 643 | if (outer == Type.noType) |
| 644 | outer = t.erasure(types); |
| 645 | else |
| 646 | outer = new ClassType(outer, List.<Type>nil(), t); |
| 647 | sbp = startSbp; |
| 648 | return outer; |
| 649 | } |
| 650 | |
| 651 | case '<': // generic arguments |
| 652 | ClassSymbol t = enterClass(names.fromUtf(signatureBuffer, |
| 653 | startSbp, |
| 654 | sbp - startSbp)); |
| 655 | outer = new ClassType(outer, sigToTypes('>'), t) { |
| 656 | boolean completed = false; |
| 657 | public Type getEnclosingType() { |
| 658 | if (!completed) { |
| 659 | completed = true; |
| 660 | tsym.complete(); |
| 661 | Type enclosingType = tsym.type.getEnclosingType(); |
| 662 | if (enclosingType != Type.noType) { |
| 663 | List<Type> typeArgs = |
| 664 | super.getEnclosingType().allparams(); |
| 665 | List<Type> typeParams = |
| 666 | enclosingType.allparams(); |
| 667 | if (typeParams.length() != typeArgs.length()) { |
| 668 | // no "rare" types |
| 669 | super.setEnclosingType(types.erasure(enclosingType)); |
| 670 | } else { |
| 671 | super.setEnclosingType(types.subst(enclosingType, |
| 672 | typeParams, |
| 673 | typeArgs)); |
| 674 | } |
| 675 | } else { |
| 676 | super.setEnclosingType(Type.noType); |
| 677 | } |
| 678 | } |
| 679 | return super.getEnclosingType(); |
| 680 | } |
| 681 | public void setEnclosingType(Type outer) { |
| 682 | throw new UnsupportedOperationException(); |
| 683 | } |
| 684 | }; |
| 685 | switch (signature[sigp++]) { |
| 686 | case ';': |
| 687 | if (sigp < signature.length && signature[sigp] == '.') { |
| 688 | // support old-style GJC signatures |
| 689 | // The signature produced was |
| 690 | // Lfoo/Outer<Lfoo/X;>;.Lfoo/Outer$Inner<Lfoo/Y;>; |
| 691 | // rather than say |
| 692 | // Lfoo/Outer<Lfoo/X;>.Inner<Lfoo/Y;>; |
| 693 | // so we skip past ".Lfoo/Outer$" |
| 694 | sigp += (sbp - startSbp) + // "foo/Outer" |
| 695 | 3; // ".L" and "$" |
| 696 | signatureBuffer[sbp++] = (byte)'$'; |
| 697 | break; |
| 698 | } else { |
| 699 | sbp = startSbp; |
| 700 | return outer; |
| 701 | } |
| 702 | case '.': |
| 703 | signatureBuffer[sbp++] = (byte)'$'; |
| 704 | break; |
| 705 | default: |
| 706 | throw new AssertionError(signature[sigp-1]); |
| 707 | } |
| 708 | continue; |
| 709 | |
| 710 | case '.': |
| 711 | signatureBuffer[sbp++] = (byte)'$'; |
| 712 | continue; |
| 713 | case '/': |
| 714 | signatureBuffer[sbp++] = (byte)'.'; |
| 715 | continue; |
| 716 | default: |
| 717 | signatureBuffer[sbp++] = c; |
| 718 | continue; |
| 719 | } |
| 720 | } |
| 721 | } |
| 722 | |
| 723 | /** Convert (implicit) signature to list of types |
| 724 | * until `terminator' is encountered. |
| 725 | */ |
| 726 | List<Type> sigToTypes(char terminator) { |
| 727 | List<Type> head = List.of(null); |
| 728 | List<Type> tail = head; |
| 729 | while (signature[sigp] != terminator) |
| 730 | tail = tail.setTail(List.of(sigToType())); |
| 731 | sigp++; |
| 732 | return head.tail; |
| 733 | } |
| 734 | |
| 735 | /** Convert signature to type parameters, where signature is a name. |
| 736 | */ |
| 737 | List<Type> sigToTypeParams(Name name) { |
| 738 | return sigToTypeParams(name.table.names, name.index, name.len); |
| 739 | } |
| 740 | |
| 741 | /** Convert signature to type parameters, where signature is a byte |
| 742 | * array segment. |
| 743 | */ |
| 744 | List<Type> sigToTypeParams(byte[] sig, int offset, int len) { |
| 745 | signature = sig; |
| 746 | sigp = offset; |
| 747 | siglimit = offset + len; |
| 748 | return sigToTypeParams(); |
| 749 | } |
| 750 | |
| 751 | /** Convert signature to type parameters, where signature is implicit. |
| 752 | */ |
| 753 | List<Type> sigToTypeParams() { |
| 754 | List<Type> tvars = List.nil(); |
| 755 | if (signature[sigp] == '<') { |
| 756 | sigp++; |
| 757 | int start = sigp; |
| 758 | sigEnterPhase = true; |
| 759 | while (signature[sigp] != '>') |
| 760 | tvars = tvars.prepend(sigToTypeParam()); |
| 761 | sigEnterPhase = false; |
| 762 | sigp = start; |
| 763 | while (signature[sigp] != '>') |
| 764 | sigToTypeParam(); |
| 765 | sigp++; |
| 766 | } |
| 767 | return tvars.reverse(); |
| 768 | } |
| 769 | |
| 770 | /** Convert (implicit) signature to type parameter. |
| 771 | */ |
| 772 | Type sigToTypeParam() { |
| 773 | int start = sigp; |
| 774 | while (signature[sigp] != ':') sigp++; |
| 775 | Name name = names.fromUtf(signature, start, sigp - start); |
| 776 | TypeVar tvar; |
| 777 | if (sigEnterPhase) { |
| 778 | tvar = new TypeVar(name, currentOwner, syms.botType); |
| 779 | typevars.enter(tvar.tsym); |
| 780 | } else { |
| 781 | tvar = (TypeVar)findTypeVar(name); |
| 782 | } |
| 783 | List<Type> bounds = List.nil(); |
| 784 | Type st = null; |
| 785 | if (signature[sigp] == ':' && signature[sigp+1] == ':') { |
| 786 | sigp++; |
| 787 | st = syms.objectType; |
| 788 | } |
| 789 | while (signature[sigp] == ':') { |
| 790 | sigp++; |
| 791 | bounds = bounds.prepend(sigToType()); |
| 792 | } |
| 793 | if (!sigEnterPhase) { |
| 794 | types.setBounds(tvar, bounds.reverse(), st); |
| 795 | } |
| 796 | return tvar; |
| 797 | } |
| 798 | |
| 799 | /** Find type variable with given name in `typevars' scope. |
| 800 | */ |
| 801 | Type findTypeVar(Name name) { |
| 802 | Scope.Entry e = typevars.lookup(name); |
| 803 | if (e.scope != null) { |
| 804 | return e.sym.type; |
| 805 | } else { |
| 806 | if (readingClassAttr) { |
| 807 | // While reading the class attribute, the supertypes |
| 808 | // might refer to a type variable from an enclosing element |
| 809 | // (method or class). |
| 810 | // If the type variable is defined in the enclosing class, |
| 811 | // we can actually find it in |
| 812 | // currentOwner.owner.type.getTypeArguments() |
| 813 | // However, until we have read the enclosing method attribute |
| 814 | // we don't know for sure if this owner is correct. It could |
| 815 | // be a method and there is no way to tell before reading the |
| 816 | // enclosing method attribute. |
| 817 | TypeVar t = new TypeVar(name, currentOwner, syms.botType); |
| 818 | missingTypeVariables = missingTypeVariables.prepend(t); |
| 819 | // System.err.println("Missing type var " + name); |
| 820 | return t; |
| 821 | } |
| 822 | throw badClassFile("undecl.type.var", name); |
| 823 | } |
| 824 | } |
| 825 | |
| 826 | /************************************************************************ |
| 827 | * Reading Attributes |
| 828 | ***********************************************************************/ |
| 829 | |
| 830 | /** Report unrecognized attribute. |
| 831 | */ |
| 832 | void unrecognized(Name attrName) { |
| 833 | if (checkClassFile) |
| 834 | printCCF("ccf.unrecognized.attribute", attrName); |
| 835 | } |
| 836 | |
| 837 | /** Read member attribute. |
| 838 | */ |
| 839 | void readMemberAttr(Symbol sym, Name attrName, int attrLen) { |
| 840 | //- System.err.println(" z " + sym + ", " + attrName + ", " + attrLen); |
| 841 | if (attrName == names.ConstantValue) { |
| 842 | Object v = readPool(nextChar()); |
| 843 | // Ignore ConstantValue attribute if field not final. |
| 844 | if ((sym.flags() & FINAL) != 0) |
| 845 | ((VarSymbol)sym).setData(v); |
| 846 | } else if (attrName == names.Code) { |
| 847 | if (readAllOfClassFile || saveParameterNames) |
| 848 | ((MethodSymbol)sym).code = readCode(sym); |
| 849 | else |
| 850 | bp = bp + attrLen; |
| 851 | } else if (attrName == names.Exceptions) { |
| 852 | int nexceptions = nextChar(); |
| 853 | List<Type> thrown = List.nil(); |
| 854 | for (int j = 0; j < nexceptions; j++) |
| 855 | thrown = thrown.prepend(readClassSymbol(nextChar()).type); |
| 856 | if (sym.type.getThrownTypes().isEmpty()) |
| 857 | sym.type.asMethodType().thrown = thrown.reverse(); |
| 858 | } else if (attrName == names.Synthetic) { |
| 859 | // bridge methods are visible when generics not enabled |
| 860 | if (allowGenerics || (sym.flags_field & BRIDGE) == 0) |
| 861 | sym.flags_field |= SYNTHETIC; |
| 862 | } else if (attrName == names.Bridge) { |
| 863 | sym.flags_field |= BRIDGE; |
| 864 | if (!allowGenerics) |
| 865 | sym.flags_field &= ~SYNTHETIC; |
| 866 | } else if (attrName == names.Deprecated) { |
| 867 | sym.flags_field |= DEPRECATED; |
| 868 | } else if (attrName == names.Varargs) { |
| 869 | if (allowVarargs) sym.flags_field |= VARARGS; |
| 870 | } else if (attrName == names.Annotation) { |
| 871 | if (allowAnnotations) sym.flags_field |= ANNOTATION; |
| 872 | } else if (attrName == names.Enum) { |
| 873 | sym.flags_field |= ENUM; |
| 874 | } else if (allowGenerics && attrName == names.Signature) { |
| 875 | List<Type> thrown = sym.type.getThrownTypes(); |
| 876 | sym.type = readType(nextChar()); |
| 877 | //- System.err.println(" # " + sym.type); |
| 878 | if (sym.kind == MTH && sym.type.getThrownTypes().isEmpty()) |
| 879 | sym.type.asMethodType().thrown = thrown; |
| 880 | } else if (attrName == names.RuntimeVisibleAnnotations) { |
| 881 | attachAnnotations(sym); |
| 882 | } else if (attrName == names.RuntimeInvisibleAnnotations) { |
| 883 | attachAnnotations(sym); |
| 884 | } else if (attrName == names.RuntimeVisibleParameterAnnotations) { |
| 885 | attachParameterAnnotations(sym); |
| 886 | } else if (attrName == names.RuntimeInvisibleParameterAnnotations) { |
| 887 | attachParameterAnnotations(sym); |
| 888 | } else if (attrName == names.LocalVariableTable) { |
| 889 | int newbp = bp + attrLen; |
| 890 | if (saveParameterNames) { |
| 891 | // pick up parameter names from the variable table |
| 892 | List<Name> parameterNames = List.nil(); |
| 893 | int firstParam = ((sym.flags() & STATIC) == 0) ? 1 : 0; |
| 894 | int endParam = firstParam + Code.width(sym.type.getParameterTypes()); |
| 895 | int numEntries = nextChar(); |
| 896 | for (int i=0; i<numEntries; i++) { |
| 897 | int start_pc = nextChar(); |
| 898 | int length = nextChar(); |
| 899 | int nameIndex = nextChar(); |
| 900 | int sigIndex = nextChar(); |
| 901 | int register = nextChar(); |
| 902 | if (start_pc == 0 && |
| 903 | firstParam <= register && |
| 904 | register < endParam) { |
| 905 | int index = firstParam; |
| 906 | for (Type t : sym.type.getParameterTypes()) { |
| 907 | if (index == register) { |
| 908 | parameterNames = parameterNames.prepend(readName(nameIndex)); |
| 909 | break; |
| 910 | } |
| 911 | index += Code.width(t); |
| 912 | } |
| 913 | } |
| 914 | } |
| 915 | parameterNames = parameterNames.reverse(); |
| 916 | ((MethodSymbol)sym).savedParameterNames = parameterNames; |
| 917 | } |
| 918 | bp = newbp; |
| 919 | } else if (attrName == names.AnnotationDefault) { |
| 920 | attachAnnotationDefault(sym); |
| 921 | } else if (attrName == names.EnclosingMethod) { |
| 922 | int newbp = bp + attrLen; |
| 923 | readEnclosingMethodAttr(sym); |
| 924 | bp = newbp; |
| 925 | } else { |
| 926 | unrecognized(attrName); |
| 927 | bp = bp + attrLen; |
| 928 | } |
| 929 | } |
| 930 | |
| 931 | void readEnclosingMethodAttr(Symbol sym) { |
| 932 | // sym is a nested class with an "Enclosing Method" attribute |
| 933 | // remove sym from it's current owners scope and place it in |
| 934 | // the scope specified by the attribute |
| 935 | sym.owner.members().remove(sym); |
| 936 | ClassSymbol self = (ClassSymbol)sym; |
| 937 | ClassSymbol c = readClassSymbol(nextChar()); |
| 938 | NameAndType nt = (NameAndType)readPool(nextChar()); |
| 939 | |
| 940 | MethodSymbol m = findMethod(nt, c.members_field, self.flags()); |
| 941 | if (nt != null && m == null) |
| 942 | throw badClassFile("bad.enclosing.method", self); |
| 943 | |
| 944 | self.name = simpleBinaryName(self.flatname, c.flatname) ; |
| 945 | self.owner = m != null ? m : c; |
| 946 | if (self.name.len == 0) |
| 947 | self.fullname = null; |
| 948 | else |
| 949 | self.fullname = ClassSymbol.formFullName(self.name, self.owner); |
| 950 | |
| 951 | if (m != null) { |
| 952 | ((ClassType)sym.type).setEnclosingType(m.type); |
| 953 | } else if ((self.flags_field & STATIC) == 0) { |
| 954 | ((ClassType)sym.type).setEnclosingType(c.type); |
| 955 | } else { |
| 956 | ((ClassType)sym.type).setEnclosingType(Type.noType); |
| 957 | } |
| 958 | enterTypevars(self); |
| 959 | if (!missingTypeVariables.isEmpty()) { |
| 960 | ListBuffer<Type> typeVars = new ListBuffer<Type>(); |
| 961 | for (Type typevar : missingTypeVariables) { |
| 962 | typeVars.append(findTypeVar(typevar.tsym.name)); |
| 963 | } |
| 964 | foundTypeVariables = typeVars.toList(); |
| 965 | } else { |
| 966 | foundTypeVariables = List.nil(); |
| 967 | } |
| 968 | } |
| 969 | |
| 970 | // See java.lang.Class |
| 971 | private Name simpleBinaryName(Name self, Name enclosing) { |
| 972 | String simpleBinaryName = self.toString().substring(enclosing.toString().length()); |
| 973 | if (simpleBinaryName.length() < 1 || simpleBinaryName.charAt(0) != '$') |
| 974 | throw badClassFile("bad.enclosing.method", self); |
| 975 | int index = 1; |
| 976 | while (index < simpleBinaryName.length() && |
| 977 | isAsciiDigit(simpleBinaryName.charAt(index))) |
| 978 | index++; |
| 979 | return names.fromString(simpleBinaryName.substring(index)); |
| 980 | } |
| 981 | |
| 982 | private MethodSymbol findMethod(NameAndType nt, Scope scope, long flags) { |
| 983 | if (nt == null) |
| 984 | return null; |
| 985 | |
| 986 | MethodType type = nt.type.asMethodType(); |
| 987 | |
| 988 | for (Scope.Entry e = scope.lookup(nt.name); e.scope != null; e = e.next()) |
| 989 | if (e.sym.kind == MTH && isSameBinaryType(e.sym.type.asMethodType(), type)) |
| 990 | return (MethodSymbol)e.sym; |
| 991 | |
| 992 | if (nt.name != names.init) |
| 993 | // not a constructor |
| 994 | return null; |
| 995 | if ((flags & INTERFACE) != 0) |
| 996 | // no enclosing instance |
| 997 | return null; |
| 998 | if (nt.type.getParameterTypes().isEmpty()) |
| 999 | // no parameters |
| 1000 | return null; |
| 1001 | |
| 1002 | // A constructor of an inner class. |
| 1003 | // Remove the first argument (the enclosing instance) |
| 1004 | nt.type = new MethodType(nt.type.getParameterTypes().tail, |
| 1005 | nt.type.getReturnType(), |
| 1006 | nt.type.getThrownTypes(), |
| 1007 | syms.methodClass); |
| 1008 | // Try searching again |
| 1009 | return findMethod(nt, scope, flags); |
| 1010 | } |
| 1011 | |
| 1012 | /** Similar to Types.isSameType but avoids completion */ |
| 1013 | private boolean isSameBinaryType(MethodType mt1, MethodType mt2) { |
| 1014 | List<Type> types1 = types.erasure(mt1.getParameterTypes()) |
| 1015 | .prepend(types.erasure(mt1.getReturnType())); |
| 1016 | List<Type> types2 = mt2.getParameterTypes().prepend(mt2.getReturnType()); |
| 1017 | while (!types1.isEmpty() && !types2.isEmpty()) { |
| 1018 | if (types1.head.tsym != types2.head.tsym) |
| 1019 | return false; |
| 1020 | types1 = types1.tail; |
| 1021 | types2 = types2.tail; |
| 1022 | } |
| 1023 | return types1.isEmpty() && types2.isEmpty(); |
| 1024 | } |
| 1025 | |
| 1026 | /** |
| 1027 | * Character.isDigit answers <tt>true</tt> to some non-ascii |
| 1028 | * digits. This one does not. <b>copied from java.lang.Class</b> |
| 1029 | */ |
| 1030 | private static boolean isAsciiDigit(char c) { |
| 1031 | return '0' <= c && c <= '9'; |
| 1032 | } |
| 1033 | |
| 1034 | /** Read member attributes. |
| 1035 | */ |
| 1036 | void readMemberAttrs(Symbol sym) { |
| 1037 | char ac = nextChar(); |
| 1038 | for (int i = 0; i < ac; i++) { |
| 1039 | Name attrName = readName(nextChar()); |
| 1040 | int attrLen = nextInt(); |
| 1041 | readMemberAttr(sym, attrName, attrLen); |
| 1042 | } |
| 1043 | } |
| 1044 | |
| 1045 | /** Read class attribute. |
| 1046 | */ |
| 1047 | void readClassAttr(ClassSymbol c, Name attrName, int attrLen) { |
| 1048 | if (attrName == names.SourceFile) { |
| 1049 | Name n = readName(nextChar()); |
| 1050 | c.sourcefile = new SourceFileObject(n); |
| 1051 | } else if (attrName == names.InnerClasses) { |
| 1052 | readInnerClasses(c); |
| 1053 | } else if (allowGenerics && attrName == names.Signature) { |
| 1054 | readingClassAttr = true; |
| 1055 | try { |
| 1056 | ClassType ct1 = (ClassType)c.type; |
| 1057 | assert c == currentOwner; |
| 1058 | ct1.typarams_field = readTypeParams(nextChar()); |
| 1059 | ct1.supertype_field = sigToType(); |
| 1060 | ListBuffer<Type> is = new ListBuffer<Type>(); |
| 1061 | while (sigp != siglimit) is.append(sigToType()); |
| 1062 | ct1.interfaces_field = is.toList(); |
| 1063 | } finally { |
| 1064 | readingClassAttr = false; |
| 1065 | } |
| 1066 | } else { |
| 1067 | readMemberAttr(c, attrName, attrLen); |
| 1068 | } |
| 1069 | } |
| 1070 | private boolean readingClassAttr = false; |
| 1071 | private List<Type> missingTypeVariables = List.nil(); |
| 1072 | private List<Type> foundTypeVariables = List.nil(); |
| 1073 | |
| 1074 | /** Read class attributes. |
| 1075 | */ |
| 1076 | void readClassAttrs(ClassSymbol c) { |
| 1077 | char ac = nextChar(); |
| 1078 | for (int i = 0; i < ac; i++) { |
| 1079 | Name attrName = readName(nextChar()); |
| 1080 | int attrLen = nextInt(); |
| 1081 | readClassAttr(c, attrName, attrLen); |
| 1082 | } |
| 1083 | } |
| 1084 | |
| 1085 | /** Read code block. |
| 1086 | */ |
| 1087 | Code readCode(Symbol owner) { |
| 1088 | nextChar(); // max_stack |
| 1089 | nextChar(); // max_locals |
| 1090 | final int code_length = nextInt(); |
| 1091 | bp += code_length; |
| 1092 | final char exception_table_length = nextChar(); |
| 1093 | bp += exception_table_length * 8; |
| 1094 | readMemberAttrs(owner); |
| 1095 | return null; |
| 1096 | } |
| 1097 | |
| 1098 | /************************************************************************ |
| 1099 | * Reading Java-language annotations |
| 1100 | ***********************************************************************/ |
| 1101 | |
| 1102 | /** Attach annotations. |
| 1103 | */ |
| 1104 | void attachAnnotations(final Symbol sym) { |
| 1105 | int numAttributes = nextChar(); |
| 1106 | if (numAttributes != 0) { |
| 1107 | ListBuffer<CompoundAnnotationProxy> proxies = |
| 1108 | new ListBuffer<CompoundAnnotationProxy>(); |
| 1109 | for (int i = 0; i<numAttributes; i++) { |
| 1110 | CompoundAnnotationProxy proxy = readCompoundAnnotation(); |
| 1111 | if (proxy.type.tsym == syms.proprietaryType.tsym) |
| 1112 | sym.flags_field |= PROPRIETARY; |
| 1113 | else |
| 1114 | proxies.append(proxy); |
| 1115 | } |
| 1116 | annotate.later(new AnnotationCompleter(sym, proxies.toList())); |
| 1117 | } |
| 1118 | } |
| 1119 | |
| 1120 | /** Attach parameter annotations. |
| 1121 | */ |
| 1122 | void attachParameterAnnotations(final Symbol method) { |
| 1123 | final MethodSymbol meth = (MethodSymbol)method; |
| 1124 | int numParameters = buf[bp++] & 0xFF; |
| 1125 | List<VarSymbol> parameters = meth.params(); |
| 1126 | int pnum = 0; |
| 1127 | while (parameters.tail != null) { |
| 1128 | attachAnnotations(parameters.head); |
| 1129 | parameters = parameters.tail; |
| 1130 | pnum++; |
| 1131 | } |
| 1132 | if (pnum != numParameters) { |
| 1133 | throw badClassFile("bad.runtime.invisible.param.annotations", meth); |
| 1134 | } |
| 1135 | } |
| 1136 | |
| 1137 | /** Attach the default value for an annotation element. |
| 1138 | */ |
| 1139 | void attachAnnotationDefault(final Symbol sym) { |
| 1140 | final MethodSymbol meth = (MethodSymbol)sym; // only on methods |
| 1141 | final Attribute value = readAttributeValue(); |
| 1142 | annotate.later(new AnnotationDefaultCompleter(meth, value)); |
| 1143 | } |
| 1144 | |
| 1145 | Type readTypeOrClassSymbol(int i) { |
| 1146 | // support preliminary jsr175-format class files |
| 1147 | if (buf[poolIdx[i]] == CONSTANT_Class) |
| 1148 | return readClassSymbol(i).type; |
| 1149 | return readType(i); |
| 1150 | } |
| 1151 | Type readEnumType(int i) { |
| 1152 | // support preliminary jsr175-format class files |
| 1153 | int index = poolIdx[i]; |
| 1154 | int length = getChar(index + 1); |
| 1155 | if (buf[index + length + 2] != ';') |
| 1156 | return enterClass(readName(i)).type; |
| 1157 | return readType(i); |
| 1158 | } |
| 1159 | |
| 1160 | CompoundAnnotationProxy readCompoundAnnotation() { |
| 1161 | Type t = readTypeOrClassSymbol(nextChar()); |
| 1162 | int numFields = nextChar(); |
| 1163 | ListBuffer<Pair<Name,Attribute>> pairs = |
| 1164 | new ListBuffer<Pair<Name,Attribute>>(); |
| 1165 | for (int i=0; i<numFields; i++) { |
| 1166 | Name name = readName(nextChar()); |
| 1167 | Attribute value = readAttributeValue(); |
| 1168 | pairs.append(new Pair<Name,Attribute>(name, value)); |
| 1169 | } |
| 1170 | return new CompoundAnnotationProxy(t, pairs.toList()); |
| 1171 | } |
| 1172 | |
| 1173 | Attribute readAttributeValue() { |
| 1174 | char c = (char) buf[bp++]; |
| 1175 | switch (c) { |
| 1176 | case 'B': |
| 1177 | return new Attribute.Constant(syms.byteType, readPool(nextChar())); |
| 1178 | case 'C': |
| 1179 | return new Attribute.Constant(syms.charType, readPool(nextChar())); |
| 1180 | case 'D': |
| 1181 | return new Attribute.Constant(syms.doubleType, readPool(nextChar())); |
| 1182 | case 'F': |
| 1183 | return new Attribute.Constant(syms.floatType, readPool(nextChar())); |
| 1184 | case 'I': |
| 1185 | return new Attribute.Constant(syms.intType, readPool(nextChar())); |
| 1186 | case 'J': |
| 1187 | return new Attribute.Constant(syms.longType, readPool(nextChar())); |
| 1188 | case 'S': |
| 1189 | return new Attribute.Constant(syms.shortType, readPool(nextChar())); |
| 1190 | case 'Z': |
| 1191 | return new Attribute.Constant(syms.booleanType, readPool(nextChar())); |
| 1192 | case 's': |
| 1193 | return new Attribute.Constant(syms.stringType, readPool(nextChar()).toString()); |
| 1194 | case 'e': |
| 1195 | return new EnumAttributeProxy(readEnumType(nextChar()), readName(nextChar())); |
| 1196 | case 'c': |
| 1197 | return new Attribute.Class(types, readTypeOrClassSymbol(nextChar())); |
| 1198 | case '[': { |
| 1199 | int n = nextChar(); |
| 1200 | ListBuffer<Attribute> l = new ListBuffer<Attribute>(); |
| 1201 | for (int i=0; i<n; i++) |
| 1202 | l.append(readAttributeValue()); |
| 1203 | return new ArrayAttributeProxy(l.toList()); |
| 1204 | } |
| 1205 | case '@': |
| 1206 | return readCompoundAnnotation(); |
| 1207 | default: |
| 1208 | throw new AssertionError("unknown annotation tag '" + c + "'"); |
| 1209 | } |
| 1210 | } |
| 1211 | |
| 1212 | interface ProxyVisitor extends Attribute.Visitor { |
| 1213 | void visitEnumAttributeProxy(EnumAttributeProxy proxy); |
| 1214 | void visitArrayAttributeProxy(ArrayAttributeProxy proxy); |
| 1215 | void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy); |
| 1216 | } |
| 1217 | |
| 1218 | static class EnumAttributeProxy extends Attribute { |
| 1219 | Type enumType; |
| 1220 | Name enumerator; |
| 1221 | public EnumAttributeProxy(Type enumType, Name enumerator) { |
| 1222 | super(null); |
| 1223 | this.enumType = enumType; |
| 1224 | this.enumerator = enumerator; |
| 1225 | } |
| 1226 | public void accept(Visitor v) { ((ProxyVisitor)v).visitEnumAttributeProxy(this); } |
| 1227 | public String toString() { |
| 1228 | return "/*proxy enum*/" + enumType + "." + enumerator; |
| 1229 | } |
| 1230 | } |
| 1231 | |
| 1232 | static class ArrayAttributeProxy extends Attribute { |
| 1233 | List<Attribute> values; |
| 1234 | ArrayAttributeProxy(List<Attribute> values) { |
| 1235 | super(null); |
| 1236 | this.values = values; |
| 1237 | } |
| 1238 | public void accept(Visitor v) { ((ProxyVisitor)v).visitArrayAttributeProxy(this); } |
| 1239 | public String toString() { |
| 1240 | return "{" + values + "}"; |
| 1241 | } |
| 1242 | } |
| 1243 | |
| 1244 | /** A temporary proxy representing a compound attribute. |
| 1245 | */ |
| 1246 | static class CompoundAnnotationProxy extends Attribute { |
| 1247 | final List<Pair<Name,Attribute>> values; |
| 1248 | public CompoundAnnotationProxy(Type type, |
| 1249 | List<Pair<Name,Attribute>> values) { |
| 1250 | super(type); |
| 1251 | this.values = values; |
| 1252 | } |
| 1253 | public void accept(Visitor v) { ((ProxyVisitor)v).visitCompoundAnnotationProxy(this); } |
| 1254 | public String toString() { |
| 1255 | StringBuffer buf = new StringBuffer(); |
| 1256 | buf.append("@"); |
| 1257 | buf.append(type.tsym.getQualifiedName()); |
| 1258 | buf.append("/*proxy*/{"); |
| 1259 | boolean first = true; |
| 1260 | for (List<Pair<Name,Attribute>> v = values; |
| 1261 | v.nonEmpty(); v = v.tail) { |
| 1262 | Pair<Name,Attribute> value = v.head; |
| 1263 | if (!first) buf.append(","); |
| 1264 | first = false; |
| 1265 | buf.append(value.fst); |
| 1266 | buf.append("="); |
| 1267 | buf.append(value.snd); |
| 1268 | } |
| 1269 | buf.append("}"); |
| 1270 | return buf.toString(); |
| 1271 | } |
| 1272 | } |
| 1273 | |
| 1274 | class AnnotationDeproxy implements ProxyVisitor { |
| 1275 | private ClassSymbol requestingOwner = currentOwner.kind == MTH |
| 1276 | ? currentOwner.enclClass() : (ClassSymbol)currentOwner; |
| 1277 | |
| 1278 | List<Attribute.Compound> deproxyCompoundList(List<CompoundAnnotationProxy> pl) { |
| 1279 | // also must fill in types!!!! |
| 1280 | ListBuffer<Attribute.Compound> buf = |
| 1281 | new ListBuffer<Attribute.Compound>(); |
| 1282 | for (List<CompoundAnnotationProxy> l = pl; l.nonEmpty(); l=l.tail) { |
| 1283 | buf.append(deproxyCompound(l.head)); |
| 1284 | } |
| 1285 | return buf.toList(); |
| 1286 | } |
| 1287 | |
| 1288 | Attribute.Compound deproxyCompound(CompoundAnnotationProxy a) { |
| 1289 | ListBuffer<Pair<Symbol.MethodSymbol,Attribute>> buf = |
| 1290 | new ListBuffer<Pair<Symbol.MethodSymbol,Attribute>>(); |
| 1291 | for (List<Pair<Name,Attribute>> l = a.values; |
| 1292 | l.nonEmpty(); |
| 1293 | l = l.tail) { |
| 1294 | MethodSymbol meth = findAccessMethod(a.type, l.head.fst); |
| 1295 | buf.append(new Pair<Symbol.MethodSymbol,Attribute> |
| 1296 | (meth, deproxy(meth.type.getReturnType(), l.head.snd))); |
| 1297 | } |
| 1298 | return new Attribute.Compound(a.type, buf.toList()); |
| 1299 | } |
| 1300 | |
| 1301 | MethodSymbol findAccessMethod(Type container, Name name) { |
| 1302 | CompletionFailure failure = null; |
| 1303 | try { |
| 1304 | for (Scope.Entry e = container.tsym.members().lookup(name); |
| 1305 | e.scope != null; |
| 1306 | e = e.next()) { |
| 1307 | Symbol sym = e.sym; |
| 1308 | if (sym.kind == MTH && sym.type.getParameterTypes().length() == 0) |
| 1309 | return (MethodSymbol) sym; |
| 1310 | } |
| 1311 | } catch (CompletionFailure ex) { |
| 1312 | failure = ex; |
| 1313 | } |
| 1314 | // The method wasn't found: emit a warning and recover |
| 1315 | JavaFileObject prevSource = log.useSource(requestingOwner.classfile); |
| 1316 | try { |
| 1317 | if (failure == null) { |
| 1318 | log.warning("annotation.method.not.found", |
| 1319 | container, |
| 1320 | name); |
| 1321 | } else { |
| 1322 | log.warning("annotation.method.not.found.reason", |
| 1323 | container, |
| 1324 | name, |
| 1325 | failure.getMessage()); |
| 1326 | } |
| 1327 | } finally { |
| 1328 | log.useSource(prevSource); |
| 1329 | } |
| 1330 | // Construct a new method type and symbol. Use bottom |
| 1331 | // type (typeof null) as return type because this type is |
| 1332 | // a subtype of all reference types and can be converted |
| 1333 | // to primitive types by unboxing. |
| 1334 | MethodType mt = new MethodType(List.<Type>nil(), |
| 1335 | syms.botType, |
| 1336 | List.<Type>nil(), |
| 1337 | syms.methodClass); |
| 1338 | return new MethodSymbol(PUBLIC | ABSTRACT, name, mt, container.tsym); |
| 1339 | } |
| 1340 | |
| 1341 | Attribute result; |
| 1342 | Type type; |
| 1343 | Attribute deproxy(Type t, Attribute a) { |
| 1344 | Type oldType = type; |
| 1345 | try { |
| 1346 | type = t; |
| 1347 | a.accept(this); |
| 1348 | return result; |
| 1349 | } finally { |
| 1350 | type = oldType; |
| 1351 | } |
| 1352 | } |
| 1353 | |
| 1354 | // implement Attribute.Visitor below |
| 1355 | |
| 1356 | public void visitConstant(Attribute.Constant value) { |
| 1357 | // assert value.type == type; |
| 1358 | result = value; |
| 1359 | } |
| 1360 | |
| 1361 | public void visitClass(Attribute.Class clazz) { |
| 1362 | result = clazz; |
| 1363 | } |
| 1364 | |
| 1365 | public void visitEnum(Attribute.Enum e) { |
| 1366 | throw new AssertionError(); // shouldn't happen |
| 1367 | } |
| 1368 | |
| 1369 | public void visitCompound(Attribute.Compound compound) { |
| 1370 | throw new AssertionError(); // shouldn't happen |
| 1371 | } |
| 1372 | |
| 1373 | public void visitArray(Attribute.Array array) { |
| 1374 | throw new AssertionError(); // shouldn't happen |
| 1375 | } |
| 1376 | |
| 1377 | public void visitError(Attribute.Error e) { |
| 1378 | throw new AssertionError(); // shouldn't happen |
| 1379 | } |
| 1380 | |
| 1381 | public void visitEnumAttributeProxy(EnumAttributeProxy proxy) { |
| 1382 | // type.tsym.flatName() should == proxy.enumFlatName |
| 1383 | TypeSymbol enumTypeSym = proxy.enumType.tsym; |
| 1384 | VarSymbol enumerator = null; |
| 1385 | for (Scope.Entry e = enumTypeSym.members().lookup(proxy.enumerator); |
| 1386 | e.scope != null; |
| 1387 | e = e.next()) { |
| 1388 | if (e.sym.kind == VAR) { |
| 1389 | enumerator = (VarSymbol)e.sym; |
| 1390 | break; |
| 1391 | } |
| 1392 | } |
| 1393 | if (enumerator == null) { |
| 1394 | log.error("unknown.enum.constant", |
| 1395 | currentClassFile, enumTypeSym, proxy.enumerator); |
| 1396 | result = new Attribute.Error(enumTypeSym.type); |
| 1397 | } else { |
| 1398 | result = new Attribute.Enum(enumTypeSym.type, enumerator); |
| 1399 | } |
| 1400 | } |
| 1401 | |
| 1402 | public void visitArrayAttributeProxy(ArrayAttributeProxy proxy) { |
| 1403 | int length = proxy.values.length(); |
| 1404 | Attribute[] ats = new Attribute[length]; |
| 1405 | Type elemtype = types.elemtype(type); |
| 1406 | int i = 0; |
| 1407 | for (List<Attribute> p = proxy.values; p.nonEmpty(); p = p.tail) { |
| 1408 | ats[i++] = deproxy(elemtype, p.head); |
| 1409 | } |
| 1410 | result = new Attribute.Array(type, ats); |
| 1411 | } |
| 1412 | |
| 1413 | public void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy) { |
| 1414 | result = deproxyCompound(proxy); |
| 1415 | } |
| 1416 | } |
| 1417 | |
| 1418 | class AnnotationDefaultCompleter extends AnnotationDeproxy implements Annotate.Annotator { |
| 1419 | final MethodSymbol sym; |
| 1420 | final Attribute value; |
| 1421 | final JavaFileObject classFile = currentClassFile; |
| 1422 | public String toString() { |
| 1423 | return " ClassReader store default for " + sym.owner + "." + sym + " is " + value; |
| 1424 | } |
| 1425 | AnnotationDefaultCompleter(MethodSymbol sym, Attribute value) { |
| 1426 | this.sym = sym; |
| 1427 | this.value = value; |
| 1428 | } |
| 1429 | // implement Annotate.Annotator.enterAnnotation() |
| 1430 | public void enterAnnotation() { |
| 1431 | JavaFileObject previousClassFile = currentClassFile; |
| 1432 | try { |
| 1433 | currentClassFile = classFile; |
| 1434 | sym.defaultValue = deproxy(sym.type.getReturnType(), value); |
| 1435 | } finally { |
| 1436 | currentClassFile = previousClassFile; |
| 1437 | } |
| 1438 | } |
| 1439 | } |
| 1440 | |
| 1441 | class AnnotationCompleter extends AnnotationDeproxy implements Annotate.Annotator { |
| 1442 | final Symbol sym; |
| 1443 | final List<CompoundAnnotationProxy> l; |
| 1444 | final JavaFileObject classFile; |
| 1445 | public String toString() { |
| 1446 | return " ClassReader annotate " + sym.owner + "." + sym + " with " + l; |
| 1447 | } |
| 1448 | AnnotationCompleter(Symbol sym, List<CompoundAnnotationProxy> l) { |
| 1449 | this.sym = sym; |
| 1450 | this.l = l; |
| 1451 | this.classFile = currentClassFile; |
| 1452 | } |
| 1453 | // implement Annotate.Annotator.enterAnnotation() |
| 1454 | public void enterAnnotation() { |
| 1455 | JavaFileObject previousClassFile = currentClassFile; |
| 1456 | try { |
| 1457 | currentClassFile = classFile; |
| 1458 | List<Attribute.Compound> newList = deproxyCompoundList(l); |
| 1459 | sym.attributes_field = ((sym.attributes_field == null) |
| 1460 | ? newList |
| 1461 | : newList.prependList(sym.attributes_field)); |
| 1462 | } finally { |
| 1463 | currentClassFile = previousClassFile; |
| 1464 | } |
| 1465 | } |
| 1466 | } |
| 1467 | |
| 1468 | |
| 1469 | /************************************************************************ |
| 1470 | * Reading Symbols |
| 1471 | ***********************************************************************/ |
| 1472 | |
| 1473 | /** Read a field. |
| 1474 | */ |
| 1475 | VarSymbol readField() { |
| 1476 | long flags = adjustFieldFlags(nextChar()); |
| 1477 | Name name = readName(nextChar()); |
| 1478 | Type type = readType(nextChar()); |
| 1479 | VarSymbol v = new VarSymbol(flags, name, type, currentOwner); |
| 1480 | readMemberAttrs(v); |
| 1481 | return v; |
| 1482 | } |
| 1483 | |
| 1484 | /** Read a method. |
| 1485 | */ |
| 1486 | MethodSymbol readMethod() { |
| 1487 | long flags = adjustMethodFlags(nextChar()); |
| 1488 | Name name = readName(nextChar()); |
| 1489 | Type type = readType(nextChar()); |
| 1490 | if (name == names.init && currentOwner.hasOuterInstance()) { |
| 1491 | // Sometimes anonymous classes don't have an outer |
| 1492 | // instance, however, there is no reliable way to tell so |
| 1493 | // we never strip this$n |
| 1494 | if (currentOwner.name.len != 0) |
| 1495 | type = new MethodType(type.getParameterTypes().tail, |
| 1496 | type.getReturnType(), |
| 1497 | type.getThrownTypes(), |
| 1498 | syms.methodClass); |
| 1499 | } |
| 1500 | MethodSymbol m = new MethodSymbol(flags, name, type, currentOwner); |
| 1501 | Symbol prevOwner = currentOwner; |
| 1502 | currentOwner = m; |
| 1503 | try { |
| 1504 | readMemberAttrs(m); |
| 1505 | } finally { |
| 1506 | currentOwner = prevOwner; |
| 1507 | } |
| 1508 | return m; |
| 1509 | } |
| 1510 | |
| 1511 | /** Skip a field or method |
| 1512 | */ |
| 1513 | void skipMember() { |
| 1514 | bp = bp + 6; |
| 1515 | char ac = nextChar(); |
| 1516 | for (int i = 0; i < ac; i++) { |
| 1517 | bp = bp + 2; |
| 1518 | int attrLen = nextInt(); |
| 1519 | bp = bp + attrLen; |
| 1520 | } |
| 1521 | } |
| 1522 | |
| 1523 | /** Enter type variables of this classtype and all enclosing ones in |
| 1524 | * `typevars'. |
| 1525 | */ |
| 1526 | protected void enterTypevars(Type t) { |
| 1527 | if (t.getEnclosingType() != null && t.getEnclosingType().tag == CLASS) |
| 1528 | enterTypevars(t.getEnclosingType()); |
| 1529 | for (List<Type> xs = t.getTypeArguments(); xs.nonEmpty(); xs = xs.tail) |
| 1530 | typevars.enter(xs.head.tsym); |
| 1531 | } |
| 1532 | |
| 1533 | protected void enterTypevars(Symbol sym) { |
| 1534 | if (sym.owner.kind == MTH) { |
| 1535 | enterTypevars(sym.owner); |
| 1536 | enterTypevars(sym.owner.owner); |
| 1537 | } |
| 1538 | enterTypevars(sym.type); |
| 1539 | } |
| 1540 | |
| 1541 | /** Read contents of a given class symbol `c'. Both external and internal |
| 1542 | * versions of an inner class are read. |
| 1543 | */ |
| 1544 | void readClass(ClassSymbol c) { |
| 1545 | ClassType ct = (ClassType)c.type; |
| 1546 | |
| 1547 | // allocate scope for members |
| 1548 | c.members_field = new Scope(c); |
| 1549 | |
| 1550 | // prepare type variable table |
| 1551 | typevars = typevars.dup(currentOwner); |
| 1552 | if (ct.getEnclosingType().tag == CLASS) enterTypevars(ct.getEnclosingType()); |
| 1553 | |
| 1554 | // read flags, or skip if this is an inner class |
| 1555 | long flags = adjustClassFlags(nextChar()); |
| 1556 | if (c.owner.kind == PCK) c.flags_field = flags; |
| 1557 | |
| 1558 | // read own class name and check that it matches |
| 1559 | ClassSymbol self = readClassSymbol(nextChar()); |
| 1560 | if (c != self) |
| 1561 | throw badClassFile("class.file.wrong.class", |
| 1562 | self.flatname); |
| 1563 | |
| 1564 | // class attributes must be read before class |
| 1565 | // skip ahead to read class attributes |
| 1566 | int startbp = bp; |
| 1567 | nextChar(); |
| 1568 | char interfaceCount = nextChar(); |
| 1569 | bp += interfaceCount * 2; |
| 1570 | char fieldCount = nextChar(); |
| 1571 | for (int i = 0; i < fieldCount; i++) skipMember(); |
| 1572 | char methodCount = nextChar(); |
| 1573 | for (int i = 0; i < methodCount; i++) skipMember(); |
| 1574 | readClassAttrs(c); |
| 1575 | |
| 1576 | if (readAllOfClassFile) { |
| 1577 | for (int i = 1; i < poolObj.length; i++) readPool(i); |
| 1578 | c.pool = new Pool(poolObj.length, poolObj); |
| 1579 | } |
| 1580 | |
| 1581 | // reset and read rest of classinfo |
| 1582 | bp = startbp; |
| 1583 | int n = nextChar(); |
| 1584 | if (ct.supertype_field == null) |
| 1585 | ct.supertype_field = (n == 0) |
| 1586 | ? Type.noType |
| 1587 | : readClassSymbol(n).erasure(types); |
| 1588 | n = nextChar(); |
| 1589 | List<Type> is = List.nil(); |
| 1590 | for (int i = 0; i < n; i++) { |
| 1591 | Type _inter = readClassSymbol(nextChar()).erasure(types); |
| 1592 | is = is.prepend(_inter); |
| 1593 | } |
| 1594 | if (ct.interfaces_field == null) |
| 1595 | ct.interfaces_field = is.reverse(); |
| 1596 | |
| 1597 | if (fieldCount != nextChar()) assert false; |
| 1598 | for (int i = 0; i < fieldCount; i++) enterMember(c, readField()); |
| 1599 | if (methodCount != nextChar()) assert false; |
| 1600 | for (int i = 0; i < methodCount; i++) enterMember(c, readMethod()); |
| 1601 | |
| 1602 | typevars = typevars.leave(); |
| 1603 | } |
| 1604 | |
| 1605 | /** Read inner class info. For each inner/outer pair allocate a |
| 1606 | * member class. |
| 1607 | */ |
| 1608 | void readInnerClasses(ClassSymbol c) { |
| 1609 | int n = nextChar(); |
| 1610 | for (int i = 0; i < n; i++) { |
| 1611 | nextChar(); // skip inner class symbol |
| 1612 | ClassSymbol outer = readClassSymbol(nextChar()); |
| 1613 | Name name = readName(nextChar()); |
| 1614 | if (name == null) name = names.empty; |
| 1615 | long flags = adjustClassFlags(nextChar()); |
| 1616 | if (outer != null) { // we have a member class |
| 1617 | if (name == names.empty) |
| 1618 | name = names.one; |
| 1619 | ClassSymbol member = enterClass(name, outer); |
| 1620 | if ((flags & STATIC) == 0) { |
| 1621 | ((ClassType)member.type).setEnclosingType(outer.type); |
| 1622 | if (member.erasure_field != null) |
| 1623 | ((ClassType)member.erasure_field).setEnclosingType(types.erasure(outer.type)); |
| 1624 | } |
| 1625 | if (c == outer) { |
| 1626 | member.flags_field = flags; |
| 1627 | enterMember(c, member); |
| 1628 | } |
| 1629 | } |
| 1630 | } |
| 1631 | } |
| 1632 | |
| 1633 | /** Read a class file. |
| 1634 | */ |
| 1635 | private void readClassFile(ClassSymbol c) throws IOException { |
| 1636 | int magic = nextInt(); |
| 1637 | if (magic != JAVA_MAGIC) |
| 1638 | throw badClassFile("illegal.start.of.class.file"); |
| 1639 | |
| 1640 | int minorVersion = nextChar(); |
| 1641 | int majorVersion = nextChar(); |
| 1642 | int maxMajor = Target.MAX().majorVersion; |
| 1643 | int maxMinor = Target.MAX().minorVersion; |
| 1644 | if (majorVersion > maxMajor || |
| 1645 | majorVersion * 1000 + minorVersion < |
| 1646 | Target.MIN().majorVersion * 1000 + Target.MIN().minorVersion) |
| 1647 | { |
| 1648 | if (majorVersion == (maxMajor + 1)) |
| 1649 | log.warning("big.major.version", |
| 1650 | currentClassFile, |
| 1651 | majorVersion, |
| 1652 | maxMajor); |
| 1653 | else |
| 1654 | throw badClassFile("wrong.version", |
| 1655 | Integer.toString(majorVersion), |
| 1656 | Integer.toString(minorVersion), |
| 1657 | Integer.toString(maxMajor), |
| 1658 | Integer.toString(maxMinor)); |
| 1659 | } |
| 1660 | else if (checkClassFile && |
| 1661 | majorVersion == maxMajor && |
| 1662 | minorVersion > maxMinor) |
| 1663 | { |
| 1664 | printCCF("found.later.version", |
| 1665 | Integer.toString(minorVersion)); |
| 1666 | } |
| 1667 | indexPool(); |
| 1668 | if (signatureBuffer.length < bp) { |
| 1669 | int ns = Integer.highestOneBit(bp) << 1; |
| 1670 | signatureBuffer = new byte[ns]; |
| 1671 | } |
| 1672 | readClass(c); |
| 1673 | } |
| 1674 | |
| 1675 | /************************************************************************ |
| 1676 | * Adjusting flags |
| 1677 | ***********************************************************************/ |
| 1678 | |
| 1679 | long adjustFieldFlags(long flags) { |
| 1680 | return flags; |
| 1681 | } |
| 1682 | long adjustMethodFlags(long flags) { |
| 1683 | if ((flags & ACC_BRIDGE) != 0) { |
| 1684 | flags &= ~ACC_BRIDGE; |
| 1685 | flags |= BRIDGE; |
| 1686 | if (!allowGenerics) |
| 1687 | flags &= ~SYNTHETIC; |
| 1688 | } |
| 1689 | if ((flags & ACC_VARARGS) != 0) { |
| 1690 | flags &= ~ACC_VARARGS; |
| 1691 | flags |= VARARGS; |
| 1692 | } |
| 1693 | return flags; |
| 1694 | } |
| 1695 | long adjustClassFlags(long flags) { |
| 1696 | return flags & ~ACC_SUPER; // SUPER and SYNCHRONIZED bits overloaded |
| 1697 | } |
| 1698 | |
| 1699 | /************************************************************************ |
| 1700 | * Loading Classes |
| 1701 | ***********************************************************************/ |
| 1702 | |
| 1703 | /** Define a new class given its name and owner. |
| 1704 | */ |
| 1705 | public ClassSymbol defineClass(Name name, Symbol owner) { |
| 1706 | ClassSymbol c = new ClassSymbol(0, name, owner); |
| 1707 | if (owner.kind == PCK) |
| 1708 | assert classes.get(c.flatname) == null : c; |
| 1709 | c.completer = this; |
| 1710 | return c; |
| 1711 | } |
| 1712 | |
| 1713 | /** Create a new toplevel or member class symbol with given name |
| 1714 | * and owner and enter in `classes' unless already there. |
| 1715 | */ |
| 1716 | public ClassSymbol enterClass(Name name, TypeSymbol owner) { |
| 1717 | Name flatname = TypeSymbol.formFlatName(name, owner); |
| 1718 | ClassSymbol c = classes.get(flatname); |
| 1719 | if (c == null) { |
| 1720 | c = defineClass(name, owner); |
| 1721 | classes.put(flatname, c); |
| 1722 | } else if ((c.name != name || c.owner != owner) && owner.kind == TYP && c.owner.kind == PCK) { |
| 1723 | // reassign fields of classes that might have been loaded with |
| 1724 | // their flat names. |
| 1725 | c.owner.members().remove(c); |
| 1726 | c.name = name; |
| 1727 | c.owner = owner; |
| 1728 | c.fullname = ClassSymbol.formFullName(name, owner); |
| 1729 | } |
| 1730 | return c; |
| 1731 | } |
| 1732 | |
| 1733 | /** |
| 1734 | * Creates a new toplevel class symbol with given flat name and |
| 1735 | * given class (or source) file. |
| 1736 | * |
| 1737 | * @param flatName a fully qualified binary class name |
| 1738 | * @param classFile the class file or compilation unit defining |
| 1739 | * the class (may be {@code null}) |
| 1740 | * @return a newly created class symbol |
| 1741 | * @throws AssertionError if the class symbol already exists |
| 1742 | */ |
| 1743 | public ClassSymbol enterClass(Name flatName, JavaFileObject classFile) { |
| 1744 | ClassSymbol cs = classes.get(flatName); |
| 1745 | if (cs != null) { |
| 1746 | String msg = Log.format("%s: completer = %s; class file = %s; source file = %s", |
| 1747 | cs.fullname, |
| 1748 | cs.completer, |
| 1749 | cs.classfile, |
| 1750 | cs.sourcefile); |
| 1751 | throw new AssertionError(msg); |
| 1752 | } |
| 1753 | Name packageName = Convert.packagePart(flatName); |
| 1754 | PackageSymbol owner = packageName.isEmpty() |
| 1755 | ? syms.unnamedPackage |
| 1756 | : enterPackage(packageName); |
| 1757 | cs = defineClass(Convert.shortName(flatName), owner); |
| 1758 | cs.classfile = classFile; |
| 1759 | classes.put(flatName, cs); |
| 1760 | return cs; |
| 1761 | } |
| 1762 | |
| 1763 | /** Create a new member or toplevel class symbol with given flat name |
| 1764 | * and enter in `classes' unless already there. |
| 1765 | */ |
| 1766 | public ClassSymbol enterClass(Name flatname) { |
| 1767 | ClassSymbol c = classes.get(flatname); |
| 1768 | if (c == null) |
| 1769 | return enterClass(flatname, (JavaFileObject)null); |
| 1770 | else |
| 1771 | return c; |
| 1772 | } |
| 1773 | |
| 1774 | private boolean suppressFlush = false; |
| 1775 | |
| 1776 | /** Completion for classes to be loaded. Before a class is loaded |
| 1777 | * we make sure its enclosing class (if any) is loaded. |
| 1778 | */ |
| 1779 | public void complete(Symbol sym) throws CompletionFailure { |
| 1780 | if (sym.kind == TYP) { |
| 1781 | ClassSymbol c = (ClassSymbol)sym; |
| 1782 | c.members_field = new Scope.ErrorScope(c); // make sure it's always defined |
| 1783 | boolean suppressFlush = this.suppressFlush; |
| 1784 | this.suppressFlush = true; |
| 1785 | try { |
| 1786 | completeOwners(c.owner); |
| 1787 | completeEnclosing(c); |
| 1788 | } finally { |
| 1789 | this.suppressFlush = suppressFlush; |
| 1790 | } |
| 1791 | fillIn(c); |
| 1792 | } else if (sym.kind == PCK) { |
| 1793 | PackageSymbol p = (PackageSymbol)sym; |
| 1794 | try { |
| 1795 | fillIn(p); |
| 1796 | } catch (IOException ex) { |
| 1797 | throw new CompletionFailure(sym, ex.getLocalizedMessage()).initCause(ex); |
| 1798 | } |
| 1799 | } |
| 1800 | if (!filling && !suppressFlush) |
| 1801 | annotate.flush(); // finish attaching annotations |
| 1802 | } |
| 1803 | |
| 1804 | /** complete up through the enclosing package. */ |
| 1805 | private void completeOwners(Symbol o) { |
| 1806 | if (o.kind != PCK) completeOwners(o.owner); |
| 1807 | o.complete(); |
| 1808 | } |
| 1809 | |
| 1810 | /** |
| 1811 | * Tries to complete lexically enclosing classes if c looks like a |
| 1812 | * nested class. This is similar to completeOwners but handles |
| 1813 | * the situation when a nested class is accessed directly as it is |
| 1814 | * possible with the Tree API or javax.lang.model.*. |
| 1815 | */ |
| 1816 | private void completeEnclosing(ClassSymbol c) { |
| 1817 | if (c.owner.kind == PCK) { |
| 1818 | Symbol owner = c.owner; |
| 1819 | for (Name name : Convert.enclosingCandidates(Convert.shortName(c.name))) { |
| 1820 | Symbol encl = owner.members().lookup(name).sym; |
| 1821 | if (encl == null) |
| 1822 | encl = classes.get(TypeSymbol.formFlatName(name, owner)); |
| 1823 | if (encl != null) |
| 1824 | encl.complete(); |
| 1825 | } |
| 1826 | } |
| 1827 | } |
| 1828 | |
| 1829 | /** We can only read a single class file at a time; this |
| 1830 | * flag keeps track of when we are currently reading a class |
| 1831 | * file. |
| 1832 | */ |
| 1833 | private boolean filling = false; |
| 1834 | |
| 1835 | /** Fill in definition of class `c' from corresponding class or |
| 1836 | * source file. |
| 1837 | */ |
| 1838 | private void fillIn(ClassSymbol c) { |
| 1839 | if (completionFailureName == c.fullname) { |
| 1840 | throw new CompletionFailure(c, "user-selected completion failure by class name"); |
| 1841 | } |
| 1842 | currentOwner = c; |
| 1843 | JavaFileObject classfile = c.classfile; |
| 1844 | if (classfile != null) { |
| 1845 | JavaFileObject previousClassFile = currentClassFile; |
| 1846 | try { |
| 1847 | assert !filling : |
| 1848 | "Filling " + classfile.toUri() + |
| 1849 | " during " + previousClassFile; |
| 1850 | currentClassFile = classfile; |
| 1851 | if (verbose) { |
| 1852 | printVerbose("loading", currentClassFile.toString()); |
| 1853 | } |
| 1854 | if (classfile.getKind() == JavaFileObject.Kind.CLASS) { |
| 1855 | filling = true; |
| 1856 | try { |
| 1857 | bp = 0; |
| 1858 | buf = readInputStream(buf, classfile.openInputStream()); |
| 1859 | readClassFile(c); |
| 1860 | if (!missingTypeVariables.isEmpty() && !foundTypeVariables.isEmpty()) { |
| 1861 | List<Type> missing = missingTypeVariables; |
| 1862 | List<Type> found = foundTypeVariables; |
| 1863 | missingTypeVariables = List.nil(); |
| 1864 | foundTypeVariables = List.nil(); |
| 1865 | filling = false; |
| 1866 | ClassType ct = (ClassType)currentOwner.type; |
| 1867 | ct.supertype_field = |
| 1868 | types.subst(ct.supertype_field, missing, found); |
| 1869 | ct.interfaces_field = |
| 1870 | types.subst(ct.interfaces_field, missing, found); |
| 1871 | } else if (missingTypeVariables.isEmpty() != |
| 1872 | foundTypeVariables.isEmpty()) { |
| 1873 | Name name = missingTypeVariables.head.tsym.name; |
| 1874 | throw badClassFile("undecl.type.var", name); |
| 1875 | } |
| 1876 | } finally { |
| 1877 | missingTypeVariables = List.nil(); |
| 1878 | foundTypeVariables = List.nil(); |
| 1879 | filling = false; |
| 1880 | } |
| 1881 | } else { |
| 1882 | if (sourceCompleter != null) { |
| 1883 | sourceCompleter.complete(c); |
| 1884 | } else { |
| 1885 | throw new IllegalStateException("Source completer required to read " |
| 1886 | + classfile.toUri()); |
| 1887 | } |
| 1888 | } |
| 1889 | return; |
| 1890 | } catch (IOException ex) { |
| 1891 | throw badClassFile("unable.to.access.file", ex.getMessage()); |
| 1892 | } finally { |
| 1893 | currentClassFile = previousClassFile; |
| 1894 | } |
| 1895 | } else { |
| 1896 | throw |
| 1897 | newCompletionFailure(c, |
| 1898 | Log.getLocalizedString("class.file.not.found", |
| 1899 | c.flatname)); |
| 1900 | } |
| 1901 | } |
| 1902 | // where |
| 1903 | private static byte[] readInputStream(byte[] buf, InputStream s) throws IOException { |
| 1904 | try { |
| 1905 | buf = ensureCapacity(buf, s.available()); |
| 1906 | int r = s.read(buf); |
| 1907 | int bp = 0; |
| 1908 | while (r != -1) { |
| 1909 | bp += r; |
| 1910 | buf = ensureCapacity(buf, bp); |
| 1911 | r = s.read(buf, bp, buf.length - bp); |
| 1912 | } |
| 1913 | return buf; |
| 1914 | } finally { |
| 1915 | try { |
| 1916 | s.close(); |
| 1917 | } catch (IOException e) { |
| 1918 | /* Ignore any errors, as this stream may have already |
| 1919 | * thrown a related exception which is the one that |
| 1920 | * should be reported. |
| 1921 | */ |
| 1922 | } |
| 1923 | } |
| 1924 | } |
| 1925 | private static byte[] ensureCapacity(byte[] buf, int needed) { |
| 1926 | if (buf.length < needed) { |
| 1927 | byte[] old = buf; |
| 1928 | buf = new byte[Integer.highestOneBit(needed) << 1]; |
| 1929 | System.arraycopy(old, 0, buf, 0, old.length); |
| 1930 | } |
| 1931 | return buf; |
| 1932 | } |
| 1933 | /** Static factory for CompletionFailure objects. |
| 1934 | * In practice, only one can be used at a time, so we share one |
| 1935 | * to reduce the expense of allocating new exception objects. |
| 1936 | */ |
| 1937 | private CompletionFailure newCompletionFailure(ClassSymbol c, |
| 1938 | String localized) { |
| 1939 | if (!cacheCompletionFailure) { |
| 1940 | // log.warning("proc.messager", |
| 1941 | // Log.getLocalizedString("class.file.not.found", c.flatname)); |
| 1942 | // c.debug.printStackTrace(); |
| 1943 | return new CompletionFailure(c, localized); |
| 1944 | } else { |
| 1945 | CompletionFailure result = cachedCompletionFailure; |
| 1946 | result.sym = c; |
| 1947 | result.errmsg = localized; |
| 1948 | return result; |
| 1949 | } |
| 1950 | } |
| 1951 | private CompletionFailure cachedCompletionFailure = |
| 1952 | new CompletionFailure(null, null); |
| 1953 | { |
| 1954 | cachedCompletionFailure.setStackTrace(new StackTraceElement[0]); |
| 1955 | } |
| 1956 | |
| 1957 | /** Load a toplevel class with given fully qualified name |
| 1958 | * The class is entered into `classes' only if load was successful. |
| 1959 | */ |
| 1960 | public ClassSymbol loadClass(Name flatname) throws CompletionFailure { |
| 1961 | boolean absent = classes.get(flatname) == null; |
| 1962 | ClassSymbol c = enterClass(flatname); |
| 1963 | if (c.members_field == null && c.completer != null) { |
| 1964 | try { |
| 1965 | c.complete(); |
| 1966 | } catch (CompletionFailure ex) { |
| 1967 | if (absent) classes.remove(flatname); |
| 1968 | throw ex; |
| 1969 | } |
| 1970 | } |
| 1971 | return c; |
| 1972 | } |
| 1973 | |
| 1974 | /************************************************************************ |
| 1975 | * Loading Packages |
| 1976 | ***********************************************************************/ |
| 1977 | |
| 1978 | /** Check to see if a package exists, given its fully qualified name. |
| 1979 | */ |
| 1980 | public boolean packageExists(Name fullname) { |
| 1981 | return enterPackage(fullname).exists(); |
| 1982 | } |
| 1983 | |
| 1984 | /** Make a package, given its fully qualified name. |
| 1985 | */ |
| 1986 | public PackageSymbol enterPackage(Name fullname) { |
| 1987 | PackageSymbol p = packages.get(fullname); |
| 1988 | if (p == null) { |
| 1989 | assert !fullname.isEmpty() : "rootPackage missing!"; |
| 1990 | p = new PackageSymbol( |
| 1991 | Convert.shortName(fullname), |
| 1992 | enterPackage(Convert.packagePart(fullname))); |
| 1993 | p.completer = this; |
| 1994 | packages.put(fullname, p); |
| 1995 | } |
| 1996 | return p; |
| 1997 | } |
| 1998 | |
| 1999 | /** Make a package, given its unqualified name and enclosing package. |
| 2000 | */ |
| 2001 | public PackageSymbol enterPackage(Name name, PackageSymbol owner) { |
| 2002 | return enterPackage(TypeSymbol.formFullName(name, owner)); |
| 2003 | } |
| 2004 | |
| 2005 | /** Include class corresponding to given class file in package, |
| 2006 | * unless (1) we already have one the same kind (.class or .java), or |
| 2007 | * (2) we have one of the other kind, and the given class file |
| 2008 | * is older. |
| 2009 | */ |
| 2010 | protected void includeClassFile(PackageSymbol p, JavaFileObject file) { |
| 2011 | if ((p.flags_field & EXISTS) == 0) |
| 2012 | for (Symbol q = p; q != null && q.kind == PCK; q = q.owner) |
| 2013 | q.flags_field |= EXISTS; |
| 2014 | JavaFileObject.Kind kind = file.getKind(); |
| 2015 | int seen; |
| 2016 | if (kind == JavaFileObject.Kind.CLASS) |
| 2017 | seen = CLASS_SEEN; |
| 2018 | else |
| 2019 | seen = SOURCE_SEEN; |
| 2020 | String binaryName = fileManager.inferBinaryName(currentLoc, file); |
| 2021 | int lastDot = binaryName.lastIndexOf("."); |
| 2022 | Name classname = names.fromString(binaryName.substring(lastDot + 1)); |
| 2023 | boolean isPkgInfo = classname == names.package_info; |
| 2024 | ClassSymbol c = isPkgInfo |
| 2025 | ? p.package_info |
| 2026 | : (ClassSymbol) p.members_field.lookup(classname).sym; |
| 2027 | if (c == null) { |
| 2028 | c = enterClass(classname, p); |
| 2029 | if (c.classfile == null) // only update the file if's it's newly created |
| 2030 | c.classfile = file; |
| 2031 | if (isPkgInfo) { |
| 2032 | p.package_info = c; |
| 2033 | } else { |
| 2034 | if (c.owner == p) // it might be an inner class |
| 2035 | p.members_field.enter(c); |
| 2036 | } |
| 2037 | } else if (c.classfile != null && (c.flags_field & seen) == 0) { |
| 2038 | // if c.classfile == null, we are currently compiling this class |
| 2039 | // and no further action is necessary. |
| 2040 | // if (c.flags_field & seen) != 0, we have already encountered |
| 2041 | // a file of the same kind; again no further action is necessary. |
| 2042 | if ((c.flags_field & (CLASS_SEEN | SOURCE_SEEN)) != 0) |
| 2043 | c.classfile = preferredFileObject(file, c.classfile); |
| 2044 | } |
| 2045 | c.flags_field |= seen; |
| 2046 | } |
| 2047 | |
| 2048 | /** Implement policy to choose to derive information from a source |
| 2049 | * file or a class file when both are present. May be overridden |
| 2050 | * by subclasses. |
| 2051 | */ |
| 2052 | protected JavaFileObject preferredFileObject(JavaFileObject a, |
| 2053 | JavaFileObject b) { |
| 2054 | |
| 2055 | if (preferSource) |
| 2056 | return (a.getKind() == JavaFileObject.Kind.SOURCE) ? a : b; |
| 2057 | else { |
| 2058 | long adate = a.getLastModified(); |
| 2059 | long bdate = b.getLastModified(); |
| 2060 | // 6449326: policy for bad lastModifiedTime in ClassReader |
| 2061 | //assert adate >= 0 && bdate >= 0; |
| 2062 | return (adate > bdate) ? a : b; |
| 2063 | } |
| 2064 | } |
| 2065 | |
| 2066 | /** |
| 2067 | * specifies types of files to be read when filling in a package symbol |
| 2068 | */ |
| 2069 | protected EnumSet<JavaFileObject.Kind> getPackageFileKinds() { |
| 2070 | return EnumSet.of(JavaFileObject.Kind.CLASS, JavaFileObject.Kind.SOURCE); |
| 2071 | } |
| 2072 | |
| 2073 | /** |
| 2074 | * this is used to support javadoc |
| 2075 | */ |
| 2076 | protected void extraFileActions(PackageSymbol pack, JavaFileObject fe) { |
| 2077 | } |
| 2078 | |
| 2079 | protected Location currentLoc; // FIXME |
| 2080 | |
| 2081 | private boolean verbosePath = true; |
| 2082 | |
| 2083 | /** Load directory of package into members scope. |
| 2084 | */ |
| 2085 | private void fillIn(PackageSymbol p) throws IOException { |
| 2086 | if (p.members_field == null) p.members_field = new Scope(p); |
| 2087 | String packageName = p.fullname.toString(); |
| 2088 | |
| 2089 | Set<JavaFileObject.Kind> kinds = getPackageFileKinds(); |
| 2090 | |
| 2091 | fillIn(p, PLATFORM_CLASS_PATH, |
| 2092 | fileManager.list(PLATFORM_CLASS_PATH, |
| 2093 | packageName, |
| 2094 | EnumSet.of(JavaFileObject.Kind.CLASS), |
| 2095 | false)); |
| 2096 | |
| 2097 | Set<JavaFileObject.Kind> classKinds = EnumSet.copyOf(kinds); |
| 2098 | classKinds.remove(JavaFileObject.Kind.SOURCE); |
| 2099 | boolean wantClassFiles = !classKinds.isEmpty(); |
| 2100 | |
| 2101 | Set<JavaFileObject.Kind> sourceKinds = EnumSet.copyOf(kinds); |
| 2102 | sourceKinds.remove(JavaFileObject.Kind.CLASS); |
| 2103 | boolean wantSourceFiles = !sourceKinds.isEmpty(); |
| 2104 | |
| 2105 | boolean haveSourcePath = fileManager.hasLocation(SOURCE_PATH); |
| 2106 | |
| 2107 | if (verbose && verbosePath) { |
| 2108 | if (fileManager instanceof StandardJavaFileManager) { |
| 2109 | StandardJavaFileManager fm = (StandardJavaFileManager)fileManager; |
| 2110 | if (haveSourcePath && wantSourceFiles) { |
| 2111 | List<File> path = List.nil(); |
| 2112 | for (File file : fm.getLocation(SOURCE_PATH)) { |
| 2113 | path = path.prepend(file); |
| 2114 | } |
| 2115 | printVerbose("sourcepath", path.reverse().toString()); |
| 2116 | } else if (wantSourceFiles) { |
| 2117 | List<File> path = List.nil(); |
| 2118 | for (File file : fm.getLocation(CLASS_PATH)) { |
| 2119 | path = path.prepend(file); |
| 2120 | } |
| 2121 | printVerbose("sourcepath", path.reverse().toString()); |
| 2122 | } |
| 2123 | if (wantClassFiles) { |
| 2124 | List<File> path = List.nil(); |
| 2125 | for (File file : fm.getLocation(PLATFORM_CLASS_PATH)) { |
| 2126 | path = path.prepend(file); |
| 2127 | } |
| 2128 | for (File file : fm.getLocation(CLASS_PATH)) { |
| 2129 | path = path.prepend(file); |
| 2130 | } |
| 2131 | printVerbose("classpath", path.reverse().toString()); |
| 2132 | } |
| 2133 | } |
| 2134 | } |
| 2135 | |
| 2136 | if (wantSourceFiles && !haveSourcePath) { |
| 2137 | fillIn(p, CLASS_PATH, |
| 2138 | fileManager.list(CLASS_PATH, |
| 2139 | packageName, |
| 2140 | kinds, |
| 2141 | false)); |
| 2142 | } else { |
| 2143 | if (wantClassFiles) |
| 2144 | fillIn(p, CLASS_PATH, |
| 2145 | fileManager.list(CLASS_PATH, |
| 2146 | packageName, |
| 2147 | classKinds, |
| 2148 | false)); |
| 2149 | if (wantSourceFiles) |
| 2150 | fillIn(p, SOURCE_PATH, |
| 2151 | fileManager.list(SOURCE_PATH, |
| 2152 | packageName, |
| 2153 | sourceKinds, |
| 2154 | false)); |
| 2155 | } |
| 2156 | verbosePath = false; |
| 2157 | } |
| 2158 | // where |
| 2159 | private void fillIn(PackageSymbol p, |
| 2160 | Location location, |
| 2161 | Iterable<JavaFileObject> files) |
| 2162 | { |
| 2163 | currentLoc = location; |
| 2164 | for (JavaFileObject fo : files) { |
| 2165 | switch (fo.getKind()) { |
| 2166 | case CLASS: |
| 2167 | case SOURCE: { |
| 2168 | // TODO pass binaryName to includeClassFile |
| 2169 | String binaryName = fileManager.inferBinaryName(currentLoc, fo); |
| 2170 | String simpleName = binaryName.substring(binaryName.lastIndexOf(".") + 1); |
| 2171 | if (SourceVersion.isIdentifier(simpleName) || |
| 2172 | simpleName.equals("package-info")) |
| 2173 | includeClassFile(p, fo); |
| 2174 | break; |
| 2175 | } |
| 2176 | default: |
| 2177 | extraFileActions(p, fo); |
| 2178 | } |
| 2179 | } |
| 2180 | } |
| 2181 | |
| 2182 | /** Output for "-verbose" option. |
| 2183 | * @param key The key to look up the correct internationalized string. |
| 2184 | * @param arg An argument for substitution into the output string. |
| 2185 | */ |
| 2186 | private void printVerbose(String key, CharSequence arg) { |
| 2187 | Log.printLines(log.noticeWriter, Log.getLocalizedString("verbose." + key, arg)); |
| 2188 | } |
| 2189 | |
| 2190 | /** Output for "-checkclassfile" option. |
| 2191 | * @param key The key to look up the correct internationalized string. |
| 2192 | * @param arg An argument for substitution into the output string. |
| 2193 | */ |
| 2194 | private void printCCF(String key, Object arg) { |
| 2195 | Log.printLines(log.noticeWriter, Log.getLocalizedString(key, arg)); |
| 2196 | } |
| 2197 | |
| 2198 | |
| 2199 | public interface SourceCompleter { |
| 2200 | void complete(ClassSymbol sym) |
| 2201 | throws CompletionFailure; |
| 2202 | } |
| 2203 | |
| 2204 | /** |
| 2205 | * A subclass of JavaFileObject for the sourcefile attribute found in a classfile. |
| 2206 | * The attribute is only the last component of the original filename, so is unlikely |
| 2207 | * to be valid as is, so operations other than those to access the name throw |
| 2208 | * UnsupportedOperationException |
| 2209 | */ |
| 2210 | private static class SourceFileObject extends BaseFileObject { |
| 2211 | |
| 2212 | /** The file's name. |
| 2213 | */ |
| 2214 | private Name name; |
| 2215 | |
| 2216 | public SourceFileObject(Name name) { |
| 2217 | this.name = name; |
| 2218 | } |
| 2219 | |
| 2220 | public InputStream openInputStream() { |
| 2221 | throw new UnsupportedOperationException(); |
| 2222 | } |
| 2223 | |
| 2224 | public OutputStream openOutputStream() { |
| 2225 | throw new UnsupportedOperationException(); |
| 2226 | } |
| 2227 | |
| 2228 | public Reader openReader() { |
| 2229 | throw new UnsupportedOperationException(); |
| 2230 | } |
| 2231 | |
| 2232 | public Writer openWriter() { |
| 2233 | throw new UnsupportedOperationException(); |
| 2234 | } |
| 2235 | |
| 2236 | /** @deprecated see bug 6410637 */ |
| 2237 | @Deprecated |
| 2238 | public String getName() { |
| 2239 | return name.toString(); |
| 2240 | } |
| 2241 | |
| 2242 | public long getLastModified() { |
| 2243 | throw new UnsupportedOperationException(); |
| 2244 | } |
| 2245 | |
| 2246 | public boolean delete() { |
| 2247 | throw new UnsupportedOperationException(); |
| 2248 | } |
| 2249 | |
| 2250 | public CharBuffer getCharContent(boolean ignoreEncodingErrors) { |
| 2251 | throw new UnsupportedOperationException(); |
| 2252 | } |
| 2253 | |
| 2254 | @Override |
| 2255 | public boolean equals(Object other) { |
| 2256 | if (!(other instanceof SourceFileObject)) |
| 2257 | return false; |
| 2258 | SourceFileObject o = (SourceFileObject) other; |
| 2259 | return name.equals(o.name); |
| 2260 | } |
| 2261 | |
| 2262 | @Override |
| 2263 | public int hashCode() { |
| 2264 | return name.hashCode(); |
| 2265 | } |
| 2266 | |
| 2267 | public boolean isNameCompatible(String simpleName, JavaFileObject.Kind kind) { |
| 2268 | return true; // fail-safe mode |
| 2269 | } |
| 2270 | |
| 2271 | public URI toUri() { |
| 2272 | return URI.create(name.toString()); |
| 2273 | } |
| 2274 | |
| 2275 | public Reader openReader(boolean ignoreEncodingErrors) throws IOException { |
| 2276 | throw new UnsupportedOperationException(); |
| 2277 | } |
| 2278 | |
| 2279 | } |
| 2280 | } |