1 /* 2 * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.tools.javac.code; 27 28 import java.util.Collection; 29 import java.util.Collections; 30 import java.util.EnumSet; 31 import java.util.HashMap; 32 import java.util.LinkedHashMap; 33 import java.util.Map; 34 35 import javax.lang.model.element.ElementVisitor; 36 37 import com.sun.tools.javac.code.Scope.WriteableScope; 38 import com.sun.tools.javac.code.Symbol.ClassSymbol; 39 import com.sun.tools.javac.code.Symbol.Completer; 40 import com.sun.tools.javac.code.Symbol.CompletionFailure; 41 import com.sun.tools.javac.code.Symbol.MethodSymbol; 42 import com.sun.tools.javac.code.Symbol.ModuleSymbol; 43 import com.sun.tools.javac.code.Symbol.PackageSymbol; 44 import com.sun.tools.javac.code.Symbol.TypeSymbol; 45 import com.sun.tools.javac.code.Symbol.VarSymbol; 46 import com.sun.tools.javac.code.Type.BottomType; 47 import com.sun.tools.javac.code.Type.ClassType; 48 import com.sun.tools.javac.code.Type.ErrorType; 49 import com.sun.tools.javac.code.Type.JCPrimitiveType; 50 import com.sun.tools.javac.code.Type.JCVoidType; 51 import com.sun.tools.javac.code.Type.MethodType; 52 import com.sun.tools.javac.code.Type.UnknownType; 53 import com.sun.tools.javac.comp.Modules; 54 import com.sun.tools.javac.util.Assert; 55 import com.sun.tools.javac.util.Context; 56 import com.sun.tools.javac.util.Convert; 57 import com.sun.tools.javac.util.DefinedBy; 58 import com.sun.tools.javac.util.DefinedBy.Api; 59 import com.sun.tools.javac.util.Iterators; 60 import com.sun.tools.javac.util.JavacMessages; 61 import com.sun.tools.javac.util.List; 62 import com.sun.tools.javac.util.Name; 63 import com.sun.tools.javac.util.Names; 64 65 import static com.sun.tools.javac.code.Flags.*; 66 import static com.sun.tools.javac.code.Kinds.Kind.*; 67 import static com.sun.tools.javac.code.TypeTag.*; 68 69 /** A class that defines all predefined constants and operators 70 * as well as special classes such as java.lang.Object, which need 71 * to be known to the compiler. All symbols are held in instance 72 * fields. This makes it possible to work in multiple concurrent 73 * projects, which might use different class files for library classes. 74 * 75 * <p><b>This is NOT part of any supported API. 76 * If you write code that depends on this, you do so at your own risk. 77 * This code and its internal interfaces are subject to change or 78 * deletion without notice.</b> 79 */ 80 public class Symtab { 81 /** The context key for the symbol table. */ 82 protected static final Context.Key<Symtab> symtabKey = new Context.Key<>(); 83 84 /** Get the symbol table instance. */ 85 public static Symtab instance(Context context) { 86 Symtab instance = context.get(symtabKey); 87 if (instance == null) 88 instance = new Symtab(context); 89 return instance; 90 } 91 92 /** Builtin types. 93 */ 94 public final JCPrimitiveType byteType = new JCPrimitiveType(BYTE, null); 95 public final JCPrimitiveType charType = new JCPrimitiveType(CHAR, null); 96 public final JCPrimitiveType shortType = new JCPrimitiveType(SHORT, null); 97 public final JCPrimitiveType intType = new JCPrimitiveType(INT, null); 98 public final JCPrimitiveType longType = new JCPrimitiveType(LONG, null); 99 public final JCPrimitiveType floatType = new JCPrimitiveType(FLOAT, null); 100 public final JCPrimitiveType doubleType = new JCPrimitiveType(DOUBLE, null); 101 public final JCPrimitiveType booleanType = new JCPrimitiveType(BOOLEAN, null); 102 public final Type botType = new BottomType(); 103 public final JCVoidType voidType = new JCVoidType(); 104 105 private final Names names; 106 private final JavacMessages messages; 107 private final Completer initialCompleter; 108 private final Completer moduleCompleter; 109 110 /** A symbol for the unnamed module. 111 */ 112 public final ModuleSymbol unnamedModule; 113 114 /** The error module. 115 */ 116 public final ModuleSymbol errModule; 117 118 /** A symbol for no module, for use with -source 8 or less 119 */ 120 public final ModuleSymbol noModule; 121 122 /** A symbol for the root package. 123 */ 124 public final PackageSymbol rootPackage; 125 126 /** A symbol that stands for a missing symbol. 127 */ 128 public final TypeSymbol noSymbol; 129 130 /** The error symbol. 131 */ 132 public final ClassSymbol errSymbol; 133 134 /** The unknown symbol. 135 */ 136 public final ClassSymbol unknownSymbol; 137 138 /** A value for the errType, with a originalType of noType */ 139 public final Type errType; 140 141 /** A value for the unknown type. */ 142 public final Type unknownType; 143 144 /** The builtin type of all arrays. */ 145 public final ClassSymbol arrayClass; 146 public final MethodSymbol arrayCloneMethod; 147 148 /** VGJ: The (singleton) type of all bound types. */ 149 public final ClassSymbol boundClass; 150 151 /** The builtin type of all methods. */ 152 public final ClassSymbol methodClass; 153 154 /** A symbol for the java.base module. 155 */ 156 public final ModuleSymbol java_base; 157 158 /** Predefined types. 159 */ 160 public final Type objectType; 161 public final Type valueClassType; 162 public final Type objectsType; 163 public final Type classType; 164 public final Type classLoaderType; 165 public final Type stringType; 166 public final Type stringBufferType; 167 public final Type stringBuilderType; 168 public final Type cloneableType; 169 public final Type serializableType; 170 public final Type serializedLambdaType; 171 public final Type varHandleType; 172 public final Type methodHandleType; 173 public final Type methodHandleLookupType; 174 public final Type methodTypeType; 175 public final Type nativeHeaderType; 176 public final Type throwableType; 177 public final Type errorType; 178 public final Type interruptedExceptionType; 179 public final Type illegalArgumentExceptionType; 180 public final Type exceptionType; 181 public final Type runtimeExceptionType; 182 public final Type classNotFoundExceptionType; 183 public final Type noClassDefFoundErrorType; 184 public final Type noSuchFieldErrorType; 185 public final Type assertionErrorType; 186 public final Type cloneNotSupportedExceptionType; 187 public final Type annotationType; 188 public final TypeSymbol enumSym; 189 public final Type listType; 190 public final Type collectionsType; 191 public final Type comparableType; 192 public final Type comparatorType; 193 public final Type arraysType; 194 public final Type iterableType; 195 public final Type iteratorType; 196 public final Type annotationTargetType; 197 public final Type overrideType; 198 public final Type retentionType; 199 public final Type deprecatedType; 200 public final Type suppressWarningsType; 201 public final Type supplierType; 202 public final Type inheritedType; 203 public final Type profileType; 204 public final Type proprietaryType; 205 public final Type systemType; 206 public final Type autoCloseableType; 207 public final Type trustMeType; 208 public final Type lambdaMetafactory; 209 public final Type stringConcatFactory; 210 public final Type repeatableType; 211 public final Type documentedType; 212 public final Type elementTypeType; 213 public final Type functionalInterfaceType; 214 public final Type valueCapableClass; 215 216 /** The symbol representing the length field of an array. 217 */ 218 public final VarSymbol lengthVar; 219 220 /** The symbol representing the final finalize method on enums */ 221 public final MethodSymbol enumFinalFinalize; 222 223 /** The symbol representing the close method on TWR AutoCloseable type */ 224 public final MethodSymbol autoCloseableClose; 225 226 /** The predefined type that belongs to a tag. 227 */ 228 public final Type[] typeOfTag = new Type[TypeTag.getTypeTagCount()]; 229 230 /** The name of the class that belongs to a basic type tag. 231 */ 232 public final Name[] boxedName = new Name[TypeTag.getTypeTagCount()]; 233 234 /** A hashtable containing the encountered top-level and member classes, 235 * indexed by flat names. The table does not contain local classes. 236 * It should be updated from the outside to reflect classes defined 237 * by compiled source files. 238 */ 239 private final Map<Name, Map<ModuleSymbol,ClassSymbol>> classes = new HashMap<>(); 240 241 /** A hashtable containing the encountered packages. 242 * the table should be updated from outside to reflect packages defined 243 * by compiled source files. 244 */ 245 private final Map<Name, Map<ModuleSymbol,PackageSymbol>> packages = new HashMap<>(); 246 247 /** A hashtable giving the encountered modules. 248 */ 249 private final Map<Name, ModuleSymbol> modules = new LinkedHashMap<>(); 250 251 public void initType(Type type, ClassSymbol c) { 252 type.tsym = c; 253 typeOfTag[type.getTag().ordinal()] = type; 254 } 255 256 public void initType(Type type, String name) { 257 initType( 258 type, 259 new ClassSymbol( 260 PUBLIC, names.fromString(name), type, rootPackage)); 261 } 262 263 public void initType(Type type, String name, String bname) { 264 initType(type, name); 265 boxedName[type.getTag().ordinal()] = names.fromString("java.lang." + bname); 266 } 267 268 /** The class symbol that owns all predefined symbols. 269 */ 270 public final ClassSymbol predefClass; 271 272 /** Enter a class into symbol table. 273 * @param s The name of the class. 274 */ 275 private Type enterClass(String s) { 276 return enterClass(java_base, names.fromString(s)).type; 277 } 278 279 public void synthesizeEmptyInterfaceIfMissing(final Type type) { 280 final Completer completer = type.tsym.completer; 281 type.tsym.completer = new Completer() { 282 @Override 283 public void complete(Symbol sym) throws CompletionFailure { 284 try { 285 completer.complete(sym); 286 } catch (CompletionFailure e) { 287 sym.flags_field |= (PUBLIC | INTERFACE); 288 ((ClassType) sym.type).supertype_field = objectType; 289 } 290 } 291 292 @Override 293 public boolean isTerminal() { 294 return completer.isTerminal(); 295 } 296 }; 297 } 298 299 public void synthesizeDeriveValueTypeIfMissing(final Type type) { 300 final Completer completer = type.tsym.completer; 301 type.tsym.completer = new Completer() { 302 public void complete(Symbol sym) throws CompletionFailure { 303 try { 304 completer.complete(sym); 305 } catch (CompletionFailure e) { 306 ClassType ctype = (ClassType) type; 307 sym.flags_field = PUBLIC|ACYCLIC|ANNOTATION|INTERFACE; 308 sym.erasure_field = ctype; 309 ((ClassSymbol) sym).members_field = WriteableScope.create(sym); 310 ctype.typarams_field = List.nil(); 311 ctype.allparams_field = List.nil(); 312 ctype.supertype_field = annotationType; 313 ctype.interfaces_field = List.nil(); 314 } 315 } 316 317 @Override 318 public boolean isTerminal() { 319 return completer.isTerminal(); 320 } 321 }; 322 } 323 324 public void synthesizeJavaLangValueClassIfMissing(final Type type) { 325 final Completer completer = type.tsym.completer; 326 type.tsym.completer = new Completer() { 327 public void complete(Symbol sym) throws CompletionFailure { 328 try { 329 completer.complete(sym); 330 } catch (CompletionFailure e) { 331 sym.flags_field |= (PUBLIC | VALUE); 332 ((ClassType) sym.type).supertype_field = Type.noType; 333 ((ClassSymbol) sym).members_field = WriteableScope.create(sym); 334 sym.members().enter(new MethodSymbol(PUBLIC, names.init, 335 new MethodType(List.<Type>nil(), voidType, List.<Type>nil(), methodClass), sym)); 336 sym.members().enter(new MethodSymbol(PUBLIC, names.hashCode, 337 new MethodType(List.<Type>nil(), intType, List.<Type>nil(), methodClass), sym)); 338 sym.members().enter(new MethodSymbol(PUBLIC, names.toString, 339 new MethodType(List.<Type>nil(), stringType, List.<Type>nil(), methodClass), sym)); 340 sym.members().enter(new MethodSymbol(PUBLIC, names.equals, 341 new MethodType(List.<Type>of(objectType), booleanType, List.<Type>nil(), methodClass), sym)); 342 } 343 } 344 345 @Override 346 public boolean isTerminal() { 347 return completer.isTerminal(); 348 } 349 }; 350 } 351 352 353 public void synthesizeBoxTypeIfMissing(final Type type) { 354 ClassSymbol sym = enterClass(java_base, boxedName[type.getTag().ordinal()]); 355 final Completer completer = sym.completer; 356 sym.completer = new Completer() { 357 @Override 358 public void complete(Symbol sym) throws CompletionFailure { 359 try { 360 completer.complete(sym); 361 } catch (CompletionFailure e) { 362 sym.flags_field |= PUBLIC; 363 ((ClassType) sym.type).supertype_field = objectType; 364 MethodSymbol boxMethod = 365 new MethodSymbol(PUBLIC | STATIC, names.valueOf, 366 new MethodType(List.of(type), sym.type, 367 List.nil(), methodClass), 368 sym); 369 sym.members().enter(boxMethod); 370 MethodSymbol unboxMethod = 371 new MethodSymbol(PUBLIC, 372 type.tsym.name.append(names.Value), // x.intValue() 373 new MethodType(List.nil(), type, 374 List.nil(), methodClass), 375 sym); 376 sym.members().enter(unboxMethod); 377 } 378 } 379 380 @Override 381 public boolean isTerminal() { 382 return completer.isTerminal(); 383 } 384 }; 385 } 386 387 // Enter a synthetic class that is used to mark classes in ct.sym. 388 // This class does not have a class file. 389 private Type enterSyntheticAnnotation(String name) { 390 // for now, leave the module null, to prevent problems from synthesizing the 391 // existence of a class in any specific module, including noModule 392 ClassType type = (ClassType)enterClass(java_base, names.fromString(name)).type; 393 ClassSymbol sym = (ClassSymbol)type.tsym; 394 sym.completer = Completer.NULL_COMPLETER; 395 sym.flags_field = PUBLIC|ACYCLIC|ANNOTATION|INTERFACE; 396 sym.erasure_field = type; 397 sym.members_field = WriteableScope.create(sym); 398 type.typarams_field = List.nil(); 399 type.allparams_field = List.nil(); 400 type.supertype_field = annotationType; 401 type.interfaces_field = List.nil(); 402 return type; 403 } 404 405 /** Constructor; enters all predefined identifiers and operators 406 * into symbol table. 407 */ 408 protected Symtab(Context context) throws CompletionFailure { 409 context.put(symtabKey, this); 410 411 names = Names.instance(context); 412 413 // Create the unknown type 414 unknownType = new UnknownType(); 415 416 messages = JavacMessages.instance(context); 417 418 rootPackage = new PackageSymbol(names.empty, null); 419 420 // create the basic builtin symbols 421 unnamedModule = new ModuleSymbol(names.empty, null) { 422 { 423 directives = List.nil(); 424 exports = List.nil(); 425 provides = List.nil(); 426 uses = List.nil(); 427 ModuleSymbol java_base = enterModule(names.java_base); 428 com.sun.tools.javac.code.Directive.RequiresDirective d = 429 new com.sun.tools.javac.code.Directive.RequiresDirective(java_base, 430 EnumSet.of(com.sun.tools.javac.code.Directive.RequiresFlag.MANDATED)); 431 requires = List.of(d); 432 } 433 @Override 434 public String toString() { 435 return messages.getLocalizedString("compiler.misc.unnamed.module"); 436 } 437 }; 438 addRootPackageFor(unnamedModule); 439 unnamedModule.enclosedPackages = unnamedModule.enclosedPackages.prepend(unnamedModule.unnamedPackage); 440 441 errModule = new ModuleSymbol(names.empty, null) { 442 { 443 directives = List.nil(); 444 exports = List.nil(); 445 provides = List.nil(); 446 uses = List.nil(); 447 ModuleSymbol java_base = enterModule(names.java_base); 448 com.sun.tools.javac.code.Directive.RequiresDirective d = 449 new com.sun.tools.javac.code.Directive.RequiresDirective(java_base, 450 EnumSet.of(com.sun.tools.javac.code.Directive.RequiresFlag.MANDATED)); 451 requires = List.of(d); 452 } 453 }; 454 addRootPackageFor(errModule); 455 456 noModule = new ModuleSymbol(names.empty, null) { 457 @Override public boolean isNoModule() { 458 return true; 459 } 460 }; 461 addRootPackageFor(noModule); 462 463 noSymbol = new TypeSymbol(NIL, 0, names.empty, Type.noType, rootPackage) { 464 @Override @DefinedBy(Api.LANGUAGE_MODEL) 465 public <R, P> R accept(ElementVisitor<R, P> v, P p) { 466 return v.visitUnknown(this, p); 467 } 468 }; 469 470 // create the error symbols 471 errSymbol = new ClassSymbol(PUBLIC|STATIC|ACYCLIC, names.any, null, rootPackage); 472 errType = new ErrorType(errSymbol, Type.noType); 473 474 unknownSymbol = new ClassSymbol(PUBLIC|STATIC|ACYCLIC, names.fromString("<any?>"), null, rootPackage); 475 unknownSymbol.members_field = new Scope.ErrorScope(unknownSymbol); 476 unknownSymbol.type = unknownType; 477 478 // initialize builtin types 479 initType(byteType, "byte", "Byte"); 480 initType(shortType, "short", "Short"); 481 initType(charType, "char", "Character"); 482 initType(intType, "int", "Integer"); 483 initType(longType, "long", "Long"); 484 initType(floatType, "float", "Float"); 485 initType(doubleType, "double", "Double"); 486 initType(booleanType, "boolean", "Boolean"); 487 initType(voidType, "void", "Void"); 488 initType(botType, "<nulltype>"); 489 initType(errType, errSymbol); 490 initType(unknownType, unknownSymbol); 491 492 // the builtin class of all arrays 493 arrayClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Array, noSymbol); 494 495 // VGJ 496 boundClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Bound, noSymbol); 497 boundClass.members_field = new Scope.ErrorScope(boundClass); 498 499 // the builtin class of all methods 500 methodClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Method, noSymbol); 501 methodClass.members_field = new Scope.ErrorScope(boundClass); 502 503 // Create class to hold all predefined constants and operations. 504 predefClass = new ClassSymbol(PUBLIC|ACYCLIC, names.empty, rootPackage); 505 WriteableScope scope = WriteableScope.create(predefClass); 506 predefClass.members_field = scope; 507 508 // Get the initial completer for Symbols from the ClassFinder 509 initialCompleter = ClassFinder.instance(context).getCompleter(); 510 rootPackage.members_field = WriteableScope.create(rootPackage); 511 512 // Enter symbols for basic types. 513 scope.enter(byteType.tsym); 514 scope.enter(shortType.tsym); 515 scope.enter(charType.tsym); 516 scope.enter(intType.tsym); 517 scope.enter(longType.tsym); 518 scope.enter(floatType.tsym); 519 scope.enter(doubleType.tsym); 520 scope.enter(booleanType.tsym); 521 scope.enter(errType.tsym); 522 523 // Enter symbol for the errSymbol 524 scope.enter(errSymbol); 525 526 Source source = Source.instance(context); 527 if (source.allowModules()) { 528 java_base = enterModule(names.java_base); 529 //avoid completing java.base during the Symtab initialization 530 java_base.completer = Completer.NULL_COMPLETER; 531 java_base.visiblePackages = Collections.emptyMap(); 532 } else { 533 java_base = noModule; 534 } 535 536 // Get the initial completer for ModuleSymbols from Modules 537 moduleCompleter = Modules.instance(context).getCompleter(); 538 539 // Enter predefined classes. All are assumed to be in the java.base module. 540 objectType = enterClass("java.lang.Object"); 541 objectsType = enterClass("java.util.Objects"); 542 valueClassType = enterClass("java.lang.__Value"); 543 classType = enterClass("java.lang.Class"); 544 stringType = enterClass("java.lang.String"); 545 stringBufferType = enterClass("java.lang.StringBuffer"); 546 stringBuilderType = enterClass("java.lang.StringBuilder"); 547 cloneableType = enterClass("java.lang.Cloneable"); 548 throwableType = enterClass("java.lang.Throwable"); 549 serializableType = enterClass("java.io.Serializable"); 550 serializedLambdaType = enterClass("java.lang.invoke.SerializedLambda"); 551 varHandleType = enterClass("java.lang.invoke.VarHandle"); 552 methodHandleType = enterClass("java.lang.invoke.MethodHandle"); 553 methodHandleLookupType = enterClass("java.lang.invoke.MethodHandles$Lookup"); 554 methodTypeType = enterClass("java.lang.invoke.MethodType"); 555 errorType = enterClass("java.lang.Error"); 556 illegalArgumentExceptionType = enterClass("java.lang.IllegalArgumentException"); 557 interruptedExceptionType = enterClass("java.lang.InterruptedException"); 558 exceptionType = enterClass("java.lang.Exception"); 559 runtimeExceptionType = enterClass("java.lang.RuntimeException"); 560 classNotFoundExceptionType = enterClass("java.lang.ClassNotFoundException"); 561 noClassDefFoundErrorType = enterClass("java.lang.NoClassDefFoundError"); 562 noSuchFieldErrorType = enterClass("java.lang.NoSuchFieldError"); 563 assertionErrorType = enterClass("java.lang.AssertionError"); 564 cloneNotSupportedExceptionType = enterClass("java.lang.CloneNotSupportedException"); 565 annotationType = enterClass("java.lang.annotation.Annotation"); 566 classLoaderType = enterClass("java.lang.ClassLoader"); 567 enumSym = enterClass(java_base, names.java_lang_Enum); 568 enumFinalFinalize = 569 new MethodSymbol(PROTECTED|FINAL|HYPOTHETICAL, 570 names.finalize, 571 new MethodType(List.nil(), voidType, 572 List.nil(), methodClass), 573 enumSym); 574 listType = enterClass("java.util.List"); 575 collectionsType = enterClass("java.util.Collections"); 576 comparableType = enterClass("java.lang.Comparable"); 577 comparatorType = enterClass("java.util.Comparator"); 578 arraysType = enterClass("java.util.Arrays"); 579 iterableType = enterClass("java.lang.Iterable"); 580 iteratorType = enterClass("java.util.Iterator"); 581 annotationTargetType = enterClass("java.lang.annotation.Target"); 582 overrideType = enterClass("java.lang.Override"); 583 retentionType = enterClass("java.lang.annotation.Retention"); 584 deprecatedType = enterClass("java.lang.Deprecated"); 585 suppressWarningsType = enterClass("java.lang.SuppressWarnings"); 586 supplierType = enterClass("java.util.function.Supplier"); 587 inheritedType = enterClass("java.lang.annotation.Inherited"); 588 repeatableType = enterClass("java.lang.annotation.Repeatable"); 589 documentedType = enterClass("java.lang.annotation.Documented"); 590 elementTypeType = enterClass("java.lang.annotation.ElementType"); 591 systemType = enterClass("java.lang.System"); 592 autoCloseableType = enterClass("java.lang.AutoCloseable"); 593 autoCloseableClose = new MethodSymbol(PUBLIC, 594 names.close, 595 new MethodType(List.nil(), voidType, 596 List.of(exceptionType), methodClass), 597 autoCloseableType.tsym); 598 trustMeType = enterClass("java.lang.SafeVarargs"); 599 nativeHeaderType = enterClass("java.lang.annotation.Native"); 600 lambdaMetafactory = enterClass("java.lang.invoke.LambdaMetafactory"); 601 stringConcatFactory = enterClass("java.lang.invoke.StringConcatFactory"); 602 functionalInterfaceType = enterClass("java.lang.FunctionalInterface"); 603 valueCapableClass = enterClass("jvm.internal.value.ValueCapableClass"); 604 605 synthesizeEmptyInterfaceIfMissing(autoCloseableType); 606 synthesizeEmptyInterfaceIfMissing(cloneableType); 607 synthesizeEmptyInterfaceIfMissing(serializableType); 608 synthesizeEmptyInterfaceIfMissing(lambdaMetafactory); 609 synthesizeEmptyInterfaceIfMissing(serializedLambdaType); 610 synthesizeEmptyInterfaceIfMissing(stringConcatFactory); 611 synthesizeBoxTypeIfMissing(doubleType); 612 synthesizeBoxTypeIfMissing(floatType); 613 synthesizeBoxTypeIfMissing(voidType); 614 synthesizeJavaLangValueClassIfMissing(valueClassType); 615 synthesizeDeriveValueTypeIfMissing(valueCapableClass); 616 617 // Enter a synthetic class that is used to mark internal 618 // proprietary classes in ct.sym. This class does not have a 619 // class file. 620 proprietaryType = enterSyntheticAnnotation("sun.Proprietary+Annotation"); 621 622 // Enter a synthetic class that is used to provide profile info for 623 // classes in ct.sym. This class does not have a class file. 624 profileType = enterSyntheticAnnotation("jdk.Profile+Annotation"); 625 MethodSymbol m = new MethodSymbol(PUBLIC | ABSTRACT, names.value, intType, profileType.tsym); 626 profileType.tsym.members().enter(m); 627 628 // Enter a class for arrays. 629 // The class implements java.lang.Cloneable and java.io.Serializable. 630 // It has a final length field and a clone method. 631 ClassType arrayClassType = (ClassType)arrayClass.type; 632 arrayClassType.supertype_field = objectType; 633 arrayClassType.interfaces_field = List.of(cloneableType, serializableType); 634 arrayClass.members_field = WriteableScope.create(arrayClass); 635 lengthVar = new VarSymbol( 636 PUBLIC | FINAL, 637 names.length, 638 intType, 639 arrayClass); 640 arrayClass.members().enter(lengthVar); 641 arrayCloneMethod = new MethodSymbol( 642 PUBLIC, 643 names.clone, 644 new MethodType(List.nil(), objectType, 645 List.nil(), methodClass), 646 arrayClass); 647 arrayClass.members().enter(arrayCloneMethod); 648 649 if (java_base != noModule) 650 java_base.completer = moduleCompleter::complete; //bootstrap issues 651 652 } 653 654 /** Define a new class given its name and owner. 655 */ 656 public ClassSymbol defineClass(Name name, Symbol owner) { 657 ClassSymbol c = new ClassSymbol(0, name, owner); 658 c.completer = initialCompleter; 659 return c; 660 } 661 662 /** Create a new toplevel or member class symbol with given name 663 * and owner and enter in `classes' unless already there. 664 */ 665 public ClassSymbol enterClass(ModuleSymbol msym, Name name, TypeSymbol owner) { 666 Assert.checkNonNull(msym); 667 Name flatname = TypeSymbol.formFlatName(name, owner); 668 ClassSymbol c = getClass(msym, flatname); 669 if (c == null) { 670 c = defineClass(name, owner); 671 doEnterClass(msym, c); 672 } else if ((c.name != name || c.owner != owner) && owner.kind == TYP && c.owner.kind == PCK) { 673 // reassign fields of classes that might have been loaded with 674 // their flat names. 675 c.owner.members().remove(c); 676 c.name = name; 677 c.owner = owner; 678 c.fullname = ClassSymbol.formFullName(name, owner); 679 } 680 return c; 681 } 682 683 public ClassSymbol getClass(ModuleSymbol msym, Name flatName) { 684 Assert.checkNonNull(msym, flatName::toString); 685 return classes.getOrDefault(flatName, Collections.emptyMap()).get(msym); 686 } 687 688 public PackageSymbol lookupPackage(ModuleSymbol msym, Name flatName) { 689 Assert.checkNonNull(msym); 690 691 if (flatName.isEmpty()) { 692 //unnamed packages only from the current module - visiblePackages contains *root* package, not unnamed package! 693 return msym.unnamedPackage; 694 } 695 696 if (msym == noModule) { 697 return enterPackage(msym, flatName); 698 } 699 700 msym.complete(); 701 702 PackageSymbol pack; 703 704 pack = msym.visiblePackages.get(flatName); 705 706 if (pack != null) 707 return pack; 708 709 pack = getPackage(msym, flatName); 710 711 if (pack != null && pack.exists()) 712 return pack; 713 714 boolean dependsOnUnnamed = msym.requires != null && 715 msym.requires.stream() 716 .map(rd -> rd.module) 717 .anyMatch(mod -> mod == unnamedModule); 718 719 if (dependsOnUnnamed) { 720 //msyms depends on the unnamed module, for which we generally don't know 721 //the list of packages it "exports" ahead of time. So try to lookup the package in the 722 //current module, and in the unnamed module and see if it exists in one of them 723 PackageSymbol unnamedPack = getPackage(unnamedModule, flatName); 724 725 if (unnamedPack != null && unnamedPack.exists()) { 726 msym.visiblePackages.put(unnamedPack.fullname, unnamedPack); 727 return unnamedPack; 728 } 729 730 pack = enterPackage(msym, flatName); 731 pack.complete(); 732 if (pack.exists()) 733 return pack; 734 735 unnamedPack = enterPackage(unnamedModule, flatName); 736 unnamedPack.complete(); 737 if (unnamedPack.exists()) { 738 msym.visiblePackages.put(unnamedPack.fullname, unnamedPack); 739 return unnamedPack; 740 } 741 742 return pack; 743 } 744 745 return enterPackage(msym, flatName); 746 } 747 748 private static final Map<ModuleSymbol, ClassSymbol> EMPTY = new HashMap<>(); 749 750 public void removeClass(ModuleSymbol msym, Name flatName) { 751 classes.getOrDefault(flatName, EMPTY).remove(msym); 752 } 753 754 public Iterable<ClassSymbol> getAllClasses() { 755 return () -> Iterators.createCompoundIterator(classes.values(), v -> v.values().iterator()); 756 } 757 758 private void doEnterClass(ModuleSymbol msym, ClassSymbol cs) { 759 classes.computeIfAbsent(cs.flatname, n -> new HashMap<>()).put(msym, cs); 760 } 761 762 /** Create a new member or toplevel class symbol with given flat name 763 * and enter in `classes' unless already there. 764 */ 765 public ClassSymbol enterClass(ModuleSymbol msym, Name flatname) { 766 Assert.checkNonNull(msym); 767 PackageSymbol ps = lookupPackage(msym, Convert.packagePart(flatname)); 768 Assert.checkNonNull(ps); 769 Assert.checkNonNull(ps.modle); 770 ClassSymbol c = getClass(ps.modle, flatname); 771 if (c == null) { 772 c = defineClass(Convert.shortName(flatname), ps); 773 doEnterClass(ps.modle, c); 774 return c; 775 } else 776 return c; 777 } 778 779 /** Check to see if a package exists, given its fully qualified name. 780 */ 781 public boolean packageExists(ModuleSymbol msym, Name fullname) { 782 Assert.checkNonNull(msym); 783 return lookupPackage(msym, fullname).exists(); 784 } 785 786 /** Make a package, given its fully qualified name. 787 */ 788 public PackageSymbol enterPackage(ModuleSymbol currModule, Name fullname) { 789 Assert.checkNonNull(currModule); 790 PackageSymbol p = getPackage(currModule, fullname); 791 if (p == null) { 792 Assert.check(!fullname.isEmpty(), () -> "rootPackage missing!; currModule: " + currModule); 793 p = new PackageSymbol( 794 Convert.shortName(fullname), 795 enterPackage(currModule, Convert.packagePart(fullname))); 796 p.completer = initialCompleter; 797 p.modle = currModule; 798 doEnterPackage(currModule, p); 799 } 800 return p; 801 } 802 803 private void doEnterPackage(ModuleSymbol msym, PackageSymbol pack) { 804 packages.computeIfAbsent(pack.fullname, n -> new HashMap<>()).put(msym, pack); 805 msym.enclosedPackages = msym.enclosedPackages.prepend(pack); 806 } 807 808 private void addRootPackageFor(ModuleSymbol module) { 809 doEnterPackage(module, rootPackage); 810 PackageSymbol unnamedPackage = new PackageSymbol(names.empty, rootPackage) { 811 @Override 812 public String toString() { 813 return messages.getLocalizedString("compiler.misc.unnamed.package"); 814 } 815 }; 816 unnamedPackage.modle = module; 817 //we cannot use a method reference below, as initialCompleter might be null now 818 unnamedPackage.completer = s -> initialCompleter.complete(s); 819 module.unnamedPackage = unnamedPackage; 820 } 821 822 public PackageSymbol getPackage(ModuleSymbol module, Name fullname) { 823 return packages.getOrDefault(fullname, Collections.emptyMap()).get(module); 824 } 825 826 public ModuleSymbol enterModule(Name name) { 827 ModuleSymbol msym = modules.get(name); 828 if (msym == null) { 829 msym = ModuleSymbol.create(name, names.module_info); 830 addRootPackageFor(msym); 831 msym.completer = s -> moduleCompleter.complete(s); //bootstrap issues 832 modules.put(name, msym); 833 } 834 return msym; 835 } 836 837 public ModuleSymbol getModule(Name name) { 838 return modules.get(name); 839 } 840 841 //temporary: 842 public ModuleSymbol inferModule(Name packageName) { 843 if (packageName.isEmpty()) 844 return java_base == noModule ? noModule : unnamedModule;//! 845 846 ModuleSymbol msym = null; 847 Map<ModuleSymbol,PackageSymbol> map = packages.get(packageName); 848 if (map == null) 849 return null; 850 for (Map.Entry<ModuleSymbol,PackageSymbol> e: map.entrySet()) { 851 if (!e.getValue().members().isEmpty()) { 852 if (msym == null) { 853 msym = e.getKey(); 854 } else { 855 return null; 856 } 857 } 858 } 859 return msym; 860 } 861 862 public List<ModuleSymbol> listPackageModules(Name packageName) { 863 if (packageName.isEmpty()) 864 return List.nil(); 865 866 List<ModuleSymbol> result = List.nil(); 867 Map<ModuleSymbol,PackageSymbol> map = packages.get(packageName); 868 if (map != null) { 869 for (Map.Entry<ModuleSymbol, PackageSymbol> e: map.entrySet()) { 870 if (!e.getValue().members().isEmpty()) { 871 result = result.prepend(e.getKey()); 872 } 873 } 874 } 875 return result; 876 } 877 878 public Collection<ModuleSymbol> getAllModules() { 879 return modules.values(); 880 } 881 882 public Iterable<ClassSymbol> getClassesForName(Name candidate) { 883 return classes.getOrDefault(candidate, Collections.emptyMap()).values(); 884 } 885 886 public Iterable<PackageSymbol> getPackagesForName(Name candidate) { 887 return packages.getOrDefault(candidate, Collections.emptyMap()).values(); 888 } 889 }