1 /* 2 * Copyright (c) 1999, 2025, 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.Source.Feature; 39 import com.sun.tools.javac.code.Symbol.ClassSymbol; 40 import com.sun.tools.javac.code.Symbol.Completer; 41 import com.sun.tools.javac.code.Symbol.CompletionFailure; 42 import com.sun.tools.javac.code.Symbol.MethodSymbol; 43 import com.sun.tools.javac.code.Symbol.ModuleSymbol; 44 import com.sun.tools.javac.code.Symbol.PackageSymbol; 45 import com.sun.tools.javac.code.Symbol.RootPackageSymbol; 46 import com.sun.tools.javac.code.Symbol.TypeSymbol; 47 import com.sun.tools.javac.code.Symbol.VarSymbol; 48 import com.sun.tools.javac.code.Type.BottomType; 49 import com.sun.tools.javac.code.Type.ClassType; 50 import com.sun.tools.javac.code.Type.ErrorType; 51 import com.sun.tools.javac.code.Type.JCPrimitiveType; 52 import com.sun.tools.javac.code.Type.JCVoidType; 53 import com.sun.tools.javac.code.Type.MethodType; 54 import com.sun.tools.javac.code.Types.UniqueType; 55 import com.sun.tools.javac.comp.Modules; 56 import com.sun.tools.javac.jvm.Target; 57 import com.sun.tools.javac.util.Assert; 58 import com.sun.tools.javac.util.Context; 59 import com.sun.tools.javac.util.Convert; 60 import com.sun.tools.javac.util.DefinedBy; 61 import com.sun.tools.javac.util.DefinedBy.Api; 62 import com.sun.tools.javac.util.Iterators; 63 import com.sun.tools.javac.util.JavacMessages; 64 import com.sun.tools.javac.util.List; 65 import com.sun.tools.javac.util.Name; 66 import com.sun.tools.javac.util.Names; 67 68 import static com.sun.tools.javac.code.Flags.*; 69 import static com.sun.tools.javac.code.Kinds.Kind.*; 70 import static com.sun.tools.javac.code.TypeTag.*; 71 72 /** A class that defines all predefined constants and operators 73 * as well as special classes such as java.lang.Object, which need 74 * to be known to the compiler. All symbols are held in instance 75 * fields. This makes it possible to work in multiple concurrent 76 * projects, which might use different class files for library classes. 77 * 78 * <p><b>This is NOT part of any supported API. 79 * If you write code that depends on this, you do so at your own risk. 80 * This code and its internal interfaces are subject to change or 81 * deletion without notice.</b> 82 */ 83 public class Symtab { 84 /** The context key for the symbol table. */ 85 protected static final Context.Key<Symtab> symtabKey = new Context.Key<>(); 86 87 /** Get the symbol table instance. */ 88 public static Symtab instance(Context context) { 89 Symtab instance = context.get(symtabKey); 90 if (instance == null) 91 instance = new Symtab(context); 92 return instance; 93 } 94 95 /** Builtin types. 96 */ 97 public final JCPrimitiveType byteType = new JCPrimitiveType(BYTE, null); 98 public final JCPrimitiveType charType = new JCPrimitiveType(CHAR, null); 99 public final JCPrimitiveType shortType = new JCPrimitiveType(SHORT, null); 100 public final JCPrimitiveType intType = new JCPrimitiveType(INT, null); 101 public final JCPrimitiveType longType = new JCPrimitiveType(LONG, null); 102 public final JCPrimitiveType floatType = new JCPrimitiveType(FLOAT, null); 103 public final JCPrimitiveType doubleType = new JCPrimitiveType(DOUBLE, null); 104 public final JCPrimitiveType booleanType = new JCPrimitiveType(BOOLEAN, null); 105 public final Type botType = new BottomType(); 106 public final JCVoidType voidType = new JCVoidType(); 107 108 private final Names names; 109 private final JavacMessages messages; 110 private final Completer initialCompleter; 111 private final Completer moduleCompleter; 112 113 /** A symbol for the unnamed module. 114 */ 115 public final ModuleSymbol unnamedModule; 116 117 /** The error module. 118 */ 119 public final ModuleSymbol errModule; 120 121 /** A symbol for no module, for use with -source 8 or less 122 */ 123 public final ModuleSymbol noModule; 124 125 /** A symbol for the root package. 126 */ 127 public final PackageSymbol rootPackage; 128 129 /** A symbol that stands for a missing symbol. 130 */ 131 public final TypeSymbol noSymbol; 132 133 /** The error symbol. 134 */ 135 public final ClassSymbol errSymbol; 136 137 /** The unknown symbol. 138 */ 139 public final ClassSymbol unknownSymbol; 140 141 /** A value for the errType, with a originalType of noType */ 142 public final Type errType; 143 144 /** A value for the unknown type. */ 145 public final Type unknownType; 146 147 /** The builtin type of all arrays. */ 148 public final ClassSymbol arrayClass; 149 public final MethodSymbol arrayCloneMethod; 150 151 /** VGJ: The (singleton) type of all bound types. */ 152 public final ClassSymbol boundClass; 153 154 /** The builtin type of all methods. */ 155 public final ClassSymbol methodClass; 156 157 /** A symbol for the java.base module. 158 */ 159 public final ModuleSymbol java_base; 160 161 /** Predefined types. 162 */ 163 public final Type objectType; 164 public final Type objectMethodsType; 165 public final Type exactConversionsSupportType; 166 public final Type objectsType; 167 public final Type classType; 168 public final Type classLoaderType; 169 public final Type stringType; 170 public final Type stringBufferType; 171 public final Type stringBuilderType; 172 public final Type cloneableType; 173 public final Type serializableType; 174 public final Type serializedLambdaType; 175 public final Type varHandleType; 176 public final Type methodHandleType; 177 public final Type methodHandlesType; 178 public final Type methodHandleLookupType; 179 public final Type methodTypeType; 180 public final Type nativeHeaderType; 181 public final Type throwableType; 182 public final Type errorType; 183 public final Type interruptedExceptionType; 184 public final Type illegalArgumentExceptionType; 185 public final Type exceptionType; 186 public final Type runtimeExceptionType; 187 public final Type classNotFoundExceptionType; 188 public final Type noClassDefFoundErrorType; 189 public final Type noSuchFieldErrorType; 190 public final Type assertionErrorType; 191 public final Type incompatibleClassChangeErrorType; 192 public final Type cloneNotSupportedExceptionType; 193 public final Type matchExceptionType; 194 public final Type annotationType; 195 public final TypeSymbol enumSym; 196 public final Type listType; 197 public final Type collectionsType; 198 public final Type comparableType; 199 public final Type comparatorType; 200 public final Type arraysType; 201 public final Type iterableType; 202 public final Type iteratorType; 203 public final Type annotationTargetType; 204 public final Type overrideType; 205 public final Type retentionType; 206 public final Type deprecatedType; 207 public final Type suppressWarningsType; 208 public final Type supplierType; 209 public final Type inheritedType; 210 public final Type profileType; 211 public final Type proprietaryType; 212 public final Type systemType; 213 public final Type autoCloseableType; 214 public final Type trustMeType; 215 public final Type lambdaMetafactory; 216 public final Type stringConcatFactory; 217 public final Type repeatableType; 218 public final Type documentedType; 219 public final Type elementTypeType; 220 public final Type functionalInterfaceType; 221 public final Type previewFeatureType; 222 public final Type previewFeatureInternalType; 223 public final Type restrictedType; 224 public final Type restrictedInternalType; 225 public final Type typeDescriptorType; 226 public final Type recordType; 227 public final Type switchBootstrapsType; 228 public final Type constantBootstrapsType; 229 public final Type valueBasedType; 230 public final Type valueBasedInternalType; 231 public final Type requiresIdentityType; 232 public final Type requiresIdentityInternalType; 233 public final Type classDescType; 234 public final Type enumDescType; 235 236 // For serialization lint checking 237 public final Type objectStreamFieldType; 238 public final Type objectInputStreamType; 239 public final Type objectOutputStreamType; 240 public final Type ioExceptionType; 241 public final Type objectStreamExceptionType; 242 // For externalization lint checking 243 public final Type externalizableType; 244 public final Type objectInputType; 245 public final Type objectOutputType; 246 247 /** The symbol representing the length field of an array. 248 */ 249 public final VarSymbol lengthVar; 250 251 /** The symbol representing the final finalize method on enums */ 252 public final MethodSymbol enumFinalFinalize; 253 254 /** The symbol representing the close method on TWR AutoCloseable type */ 255 public final MethodSymbol autoCloseableClose; 256 257 /** The predefined type that belongs to a tag. 258 */ 259 public final Type[] typeOfTag = new Type[TypeTag.getTypeTagCount()]; 260 261 /** The name of the class that belongs to a basic type tag. 262 */ 263 public final Name[] boxedName = new Name[TypeTag.getTypeTagCount()]; 264 265 /** A hashtable containing the encountered top-level and member classes, 266 * indexed by flat names. The table does not contain local classes. 267 * It should be updated from the outside to reflect classes defined 268 * by compiled source files. 269 */ 270 private final Map<Name, Map<ModuleSymbol,ClassSymbol>> classes = new HashMap<>(); 271 272 /** A hashtable containing the encountered packages. 273 * the table should be updated from outside to reflect packages defined 274 * by compiled source files. 275 */ 276 private final Map<Name, Map<ModuleSymbol,PackageSymbol>> packages = new HashMap<>(); 277 278 /** A hashtable giving the encountered modules. 279 */ 280 private final Map<Name, ModuleSymbol> modules = new LinkedHashMap<>(); 281 282 private final Map<Types.UniqueType, VarSymbol> classFields = new HashMap<>(); 283 284 public VarSymbol getClassField(Type type, Types types) { 285 return classFields.computeIfAbsent( 286 new UniqueType(type, types), k -> { 287 Type arg = null; 288 if (type.getTag() == ARRAY || type.getTag() == CLASS) 289 arg = types.erasure(type); 290 else if (type.isPrimitiveOrVoid()) 291 arg = types.boxedClass(type).type; 292 else 293 throw new AssertionError(type); 294 295 Type t = new ClassType( 296 classType.getEnclosingType(), List.of(arg), classType.tsym); 297 return new VarSymbol( 298 STATIC | PUBLIC | FINAL, names._class, t, type.tsym); 299 }); 300 } 301 302 public void initType(Type type, ClassSymbol c) { 303 type.tsym = c; 304 typeOfTag[type.getTag().ordinal()] = type; 305 } 306 307 public void initType(Type type, String name) { 308 initType( 309 type, 310 new ClassSymbol( 311 PUBLIC, names.fromString(name), type, rootPackage)); 312 } 313 314 public void initType(Type type, String name, String bname) { 315 initType(type, name); 316 boxedName[type.getTag().ordinal()] = names.fromString("java.lang." + bname); 317 } 318 319 /** The class symbol that owns all predefined symbols. 320 */ 321 public final ClassSymbol predefClass; 322 323 /** Enter a class into symbol table. 324 * @param s The name of the class. 325 */ 326 private Type enterClass(String s) { 327 return enterClass(java_base, names.fromString(s)).type; 328 } 329 330 public void synthesizeEmptyInterfaceIfMissing(final Type type) { 331 final Completer completer = type.tsym.completer; 332 type.tsym.completer = new Completer() { 333 @Override 334 public void complete(Symbol sym) throws CompletionFailure { 335 try { 336 completer.complete(sym); 337 } catch (CompletionFailure e) { 338 sym.flags_field |= (PUBLIC | INTERFACE); 339 ((ClassType) sym.type).supertype_field = objectType; 340 } 341 } 342 343 @Override 344 public boolean isTerminal() { 345 return completer.isTerminal(); 346 } 347 }; 348 } 349 350 public void synthesizeBoxTypeIfMissing(final Type type) { 351 ClassSymbol sym = enterClass(java_base, boxedName[type.getTag().ordinal()]); 352 final Completer completer = sym.completer; 353 sym.completer = new Completer() { 354 @Override 355 public void complete(Symbol sym) throws CompletionFailure { 356 try { 357 completer.complete(sym); 358 } catch (CompletionFailure e) { 359 sym.flags_field |= PUBLIC; 360 ((ClassType) sym.type).supertype_field = objectType; 361 MethodSymbol boxMethod = 362 new MethodSymbol(PUBLIC | STATIC, names.valueOf, 363 new MethodType(List.of(type), sym.type, 364 List.nil(), methodClass), 365 sym); 366 sym.members().enter(boxMethod); 367 MethodSymbol unboxMethod = 368 new MethodSymbol(PUBLIC, 369 type.tsym.name.append(names.Value), // x.intValue() 370 new MethodType(List.nil(), type, 371 List.nil(), methodClass), 372 sym); 373 sym.members().enter(unboxMethod); 374 } 375 } 376 377 @Override 378 public boolean isTerminal() { 379 return completer.isTerminal(); 380 } 381 }; 382 } 383 384 // Enter a synthetic class that is used to mark classes in ct.sym. 385 // This class does not have a class file. 386 private Type enterSyntheticAnnotation(String name) { 387 return enterSyntheticAnnotation(names.fromString(name)); 388 } 389 390 // Enter a synthetic class that is used to mark classes in ct.sym. 391 // This class does not have a class file. 392 private Type enterSyntheticAnnotation(Name name) { 393 // for now, leave the module null, to prevent problems from synthesizing the 394 // existence of a class in any specific module, including noModule 395 ClassType type = (ClassType)enterClass(java_base, name).type; 396 ClassSymbol sym = (ClassSymbol)type.tsym; 397 sym.completer = Completer.NULL_COMPLETER; 398 sym.flags_field = PUBLIC|ACYCLIC|ANNOTATION|INTERFACE; 399 sym.erasure_field = type; 400 sym.members_field = WriteableScope.create(sym); 401 type.typarams_field = List.nil(); 402 type.allparams_field = List.nil(); 403 type.supertype_field = annotationType; 404 type.interfaces_field = List.nil(); 405 return type; 406 } 407 408 /** Constructor; enters all predefined identifiers and operators 409 * into symbol table. 410 */ 411 @SuppressWarnings("this-escape") 412 protected Symtab(Context context) throws CompletionFailure { 413 context.put(symtabKey, this); 414 415 names = Names.instance(context); 416 417 messages = JavacMessages.instance(context); 418 419 MissingInfoHandler missingInfoHandler = MissingInfoHandler.instance(context); 420 421 Target target = Target.instance(context); 422 rootPackage = new RootPackageSymbol(names.empty, null, 423 missingInfoHandler, 424 target.runtimeUseNestAccess()); 425 426 noModule = new ModuleSymbol(names.empty, null) { 427 @Override public boolean isNoModule() { 428 return true; 429 } 430 }; 431 addRootPackageFor(noModule); 432 433 Source source = Source.instance(context); 434 if (Feature.MODULES.allowedInSource(source)) { 435 java_base = enterModule(names.java_base); 436 //avoid completing java.base during the Symtab initialization 437 java_base.completer = Completer.NULL_COMPLETER; 438 java_base.visiblePackages = Collections.emptyMap(); 439 } else { 440 java_base = noModule; 441 } 442 443 // create the basic builtin symbols 444 unnamedModule = new ModuleSymbol(names.empty, null) { 445 { 446 directives = List.nil(); 447 exports = List.nil(); 448 provides = List.nil(); 449 uses = List.nil(); 450 com.sun.tools.javac.code.Directive.RequiresDirective d = 451 new com.sun.tools.javac.code.Directive.RequiresDirective(java_base, 452 EnumSet.of(com.sun.tools.javac.code.Directive.RequiresFlag.MANDATED)); 453 requires = List.of(d); 454 } 455 @Override 456 public String toString() { 457 return messages.getLocalizedString("compiler.misc.unnamed.module"); 458 } 459 }; 460 addRootPackageFor(unnamedModule); 461 unnamedModule.enclosedPackages = unnamedModule.enclosedPackages.prepend(unnamedModule.unnamedPackage); 462 463 errModule = new ModuleSymbol(names.empty, null) { 464 { 465 directives = List.nil(); 466 exports = List.nil(); 467 provides = List.nil(); 468 uses = List.nil(); 469 com.sun.tools.javac.code.Directive.RequiresDirective d = 470 new com.sun.tools.javac.code.Directive.RequiresDirective(java_base, 471 EnumSet.of(com.sun.tools.javac.code.Directive.RequiresFlag.MANDATED)); 472 requires = List.of(d); 473 } 474 }; 475 addRootPackageFor(errModule); 476 477 noSymbol = new TypeSymbol(NIL, 0, names.empty, Type.noType, rootPackage) { 478 @Override @DefinedBy(Api.LANGUAGE_MODEL) 479 public <R, P> R accept(ElementVisitor<R, P> v, P p) { 480 return v.visitUnknown(this, p); 481 } 482 }; 483 484 // create the error symbols 485 errSymbol = new ClassSymbol(PUBLIC|STATIC|ACYCLIC, names.any, null, rootPackage); 486 errType = new ErrorType(errSymbol, Type.noType); 487 488 unknownSymbol = new ClassSymbol(PUBLIC|STATIC|ACYCLIC, names.fromString("<any?>"), null, rootPackage); 489 // Create the unknown type 490 unknownType = new ErrorType(unknownSymbol, Type.noType); 491 492 // initialize builtin types 493 initType(byteType, "byte", "Byte"); 494 initType(shortType, "short", "Short"); 495 initType(charType, "char", "Character"); 496 initType(intType, "int", "Integer"); 497 initType(longType, "long", "Long"); 498 initType(floatType, "float", "Float"); 499 initType(doubleType, "double", "Double"); 500 initType(booleanType, "boolean", "Boolean"); 501 initType(voidType, "void", "Void"); 502 initType(botType, "<nulltype>"); 503 initType(errType, errSymbol); 504 initType(unknownType, unknownSymbol); 505 506 // the builtin class of all arrays 507 arrayClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Array, noSymbol); 508 509 // VGJ 510 boundClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Bound, noSymbol); 511 boundClass.members_field = new Scope.ErrorScope(boundClass); 512 513 // the builtin class of all methods 514 methodClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Method, noSymbol); 515 methodClass.members_field = new Scope.ErrorScope(boundClass); 516 517 // Create class to hold all predefined constants and operations. 518 predefClass = new ClassSymbol(PUBLIC|ACYCLIC, names.empty, rootPackage); 519 WriteableScope scope = WriteableScope.create(predefClass); 520 predefClass.members_field = scope; 521 522 // Get the initial completer for Symbols from the ClassFinder 523 initialCompleter = ClassFinder.instance(context).getCompleter(); 524 rootPackage.members_field = WriteableScope.create(rootPackage); 525 526 // Enter symbols for basic types. 527 scope.enter(byteType.tsym); 528 scope.enter(shortType.tsym); 529 scope.enter(charType.tsym); 530 scope.enter(intType.tsym); 531 scope.enter(longType.tsym); 532 scope.enter(floatType.tsym); 533 scope.enter(doubleType.tsym); 534 scope.enter(booleanType.tsym); 535 scope.enter(errType.tsym); 536 537 // Enter symbol for the errSymbol 538 scope.enter(errSymbol); 539 540 // Get the initial completer for ModuleSymbols from Modules 541 moduleCompleter = Modules.instance(context).getCompleter(); 542 543 // Enter predefined classes. All are assumed to be in the java.base module. 544 objectType = enterClass("java.lang.Object"); 545 objectMethodsType = enterClass("java.lang.runtime.ObjectMethods"); 546 exactConversionsSupportType = enterClass("java.lang.runtime.ExactConversionsSupport"); 547 objectsType = enterClass("java.util.Objects"); 548 classType = enterClass("java.lang.Class"); 549 stringType = enterClass("java.lang.String"); 550 stringBufferType = enterClass("java.lang.StringBuffer"); 551 stringBuilderType = enterClass("java.lang.StringBuilder"); 552 cloneableType = enterClass("java.lang.Cloneable"); 553 throwableType = enterClass("java.lang.Throwable"); 554 serializableType = enterClass("java.io.Serializable"); 555 serializedLambdaType = enterClass("java.lang.invoke.SerializedLambda"); 556 varHandleType = enterClass("java.lang.invoke.VarHandle"); 557 methodHandleType = enterClass("java.lang.invoke.MethodHandle"); 558 methodHandlesType = enterClass("java.lang.invoke.MethodHandles"); 559 methodHandleLookupType = enterClass("java.lang.invoke.MethodHandles$Lookup"); 560 methodTypeType = enterClass("java.lang.invoke.MethodType"); 561 errorType = enterClass("java.lang.Error"); 562 illegalArgumentExceptionType = enterClass("java.lang.IllegalArgumentException"); 563 interruptedExceptionType = enterClass("java.lang.InterruptedException"); 564 exceptionType = enterClass("java.lang.Exception"); 565 runtimeExceptionType = enterClass("java.lang.RuntimeException"); 566 classNotFoundExceptionType = enterClass("java.lang.ClassNotFoundException"); 567 noClassDefFoundErrorType = enterClass("java.lang.NoClassDefFoundError"); 568 noSuchFieldErrorType = enterClass("java.lang.NoSuchFieldError"); 569 assertionErrorType = enterClass("java.lang.AssertionError"); 570 incompatibleClassChangeErrorType = enterClass("java.lang.IncompatibleClassChangeError"); 571 cloneNotSupportedExceptionType = enterClass("java.lang.CloneNotSupportedException"); 572 matchExceptionType = enterClass("java.lang.MatchException"); 573 annotationType = enterClass("java.lang.annotation.Annotation"); 574 classLoaderType = enterClass("java.lang.ClassLoader"); 575 enumSym = enterClass(java_base, names.java_lang_Enum); 576 enumFinalFinalize = 577 new MethodSymbol(PROTECTED|FINAL|HYPOTHETICAL, 578 names.finalize, 579 new MethodType(List.nil(), voidType, 580 List.nil(), methodClass), 581 enumSym); 582 listType = enterClass("java.util.List"); 583 collectionsType = enterClass("java.util.Collections"); 584 comparableType = enterClass("java.lang.Comparable"); 585 comparatorType = enterClass("java.util.Comparator"); 586 arraysType = enterClass("java.util.Arrays"); 587 iterableType = enterClass("java.lang.Iterable"); 588 iteratorType = enterClass("java.util.Iterator"); 589 annotationTargetType = enterClass("java.lang.annotation.Target"); 590 overrideType = enterClass("java.lang.Override"); 591 retentionType = enterClass("java.lang.annotation.Retention"); 592 deprecatedType = enterClass("java.lang.Deprecated"); 593 suppressWarningsType = enterClass("java.lang.SuppressWarnings"); 594 supplierType = enterClass("java.util.function.Supplier"); 595 inheritedType = enterClass("java.lang.annotation.Inherited"); 596 repeatableType = enterClass("java.lang.annotation.Repeatable"); 597 documentedType = enterClass("java.lang.annotation.Documented"); 598 elementTypeType = enterClass("java.lang.annotation.ElementType"); 599 systemType = enterClass("java.lang.System"); 600 autoCloseableType = enterClass("java.lang.AutoCloseable"); 601 autoCloseableClose = new MethodSymbol(PUBLIC, 602 names.close, 603 new MethodType(List.nil(), voidType, 604 List.of(exceptionType), methodClass), 605 autoCloseableType.tsym); 606 trustMeType = enterClass("java.lang.SafeVarargs"); 607 nativeHeaderType = enterClass("java.lang.annotation.Native"); 608 lambdaMetafactory = enterClass("java.lang.invoke.LambdaMetafactory"); 609 stringConcatFactory = enterClass("java.lang.invoke.StringConcatFactory"); 610 functionalInterfaceType = enterClass("java.lang.FunctionalInterface"); 611 previewFeatureType = enterClass("jdk.internal.javac.PreviewFeature"); 612 previewFeatureInternalType = enterSyntheticAnnotation("jdk.internal.PreviewFeature+Annotation"); 613 restrictedType = enterClass("jdk.internal.javac.Restricted"); 614 restrictedInternalType = enterSyntheticAnnotation("jdk.internal.javac.Restricted+Annotation"); 615 typeDescriptorType = enterClass("java.lang.invoke.TypeDescriptor"); 616 recordType = enterClass("java.lang.Record"); 617 switchBootstrapsType = enterClass("java.lang.runtime.SwitchBootstraps"); 618 constantBootstrapsType = enterClass("java.lang.invoke.ConstantBootstraps"); 619 valueBasedType = enterClass("jdk.internal.ValueBased"); 620 valueBasedInternalType = enterSyntheticAnnotation("jdk.internal.ValueBased+Annotation"); 621 requiresIdentityType = enterClass("jdk.internal.RequiresIdentity"); 622 requiresIdentityInternalType = enterSyntheticAnnotation(names.requiresIdentityInternal); 623 classDescType = enterClass("java.lang.constant.ClassDesc"); 624 enumDescType = enterClass("java.lang.Enum$EnumDesc"); 625 // For serialization lint checking 626 objectStreamFieldType = enterClass("java.io.ObjectStreamField"); 627 objectInputStreamType = enterClass("java.io.ObjectInputStream"); 628 objectOutputStreamType = enterClass("java.io.ObjectOutputStream"); 629 ioExceptionType = enterClass("java.io.IOException"); 630 objectStreamExceptionType = enterClass("java.io.ObjectStreamException"); 631 externalizableType = enterClass("java.io.Externalizable"); 632 objectInputType = enterClass("java.io.ObjectInput"); 633 objectOutputType = enterClass("java.io.ObjectOutput"); 634 synthesizeEmptyInterfaceIfMissing(autoCloseableType); 635 synthesizeEmptyInterfaceIfMissing(cloneableType); 636 synthesizeEmptyInterfaceIfMissing(serializableType); 637 synthesizeEmptyInterfaceIfMissing(lambdaMetafactory); 638 synthesizeEmptyInterfaceIfMissing(serializedLambdaType); 639 synthesizeEmptyInterfaceIfMissing(stringConcatFactory); 640 synthesizeBoxTypeIfMissing(doubleType); 641 synthesizeBoxTypeIfMissing(floatType); 642 synthesizeBoxTypeIfMissing(voidType); 643 644 // Enter a synthetic class that is used to mark internal 645 // proprietary classes in ct.sym. This class does not have a 646 // class file. 647 proprietaryType = enterSyntheticAnnotation("sun.Proprietary+Annotation"); 648 649 // Enter a synthetic class that is used to provide profile info for 650 // classes in ct.sym. This class does not have a class file. 651 profileType = enterSyntheticAnnotation("jdk.Profile+Annotation"); 652 MethodSymbol m = new MethodSymbol(PUBLIC | ABSTRACT, names.value, intType, profileType.tsym); 653 profileType.tsym.members().enter(m); 654 655 // Enter a class for arrays. 656 // The class implements java.lang.Cloneable and java.io.Serializable. 657 // It has a final length field and a clone method. 658 ClassType arrayClassType = (ClassType)arrayClass.type; 659 arrayClassType.supertype_field = objectType; 660 arrayClassType.interfaces_field = List.of(cloneableType, serializableType); 661 arrayClass.members_field = WriteableScope.create(arrayClass); 662 lengthVar = new VarSymbol( 663 PUBLIC | FINAL, 664 names.length, 665 intType, 666 arrayClass); 667 arrayClass.members().enter(lengthVar); 668 arrayCloneMethod = new MethodSymbol( 669 PUBLIC, 670 names.clone, 671 new MethodType(List.nil(), objectType, 672 List.nil(), methodClass), 673 arrayClass); 674 arrayClass.members().enter(arrayCloneMethod); 675 676 if (java_base != noModule) 677 java_base.completer = moduleCompleter::complete; //bootstrap issues 678 679 } 680 681 /** Define a new class given its name and owner. 682 */ 683 public ClassSymbol defineClass(Name name, Symbol owner) { 684 ClassSymbol c = new ClassSymbol(0, name, owner); 685 c.completer = initialCompleter; 686 return c; 687 } 688 689 /** Create a new toplevel or member class symbol with given name 690 * and owner and enter in `classes' unless already there. 691 */ 692 public ClassSymbol enterClass(ModuleSymbol msym, Name name, TypeSymbol owner) { 693 Assert.checkNonNull(msym); 694 Name flatname = TypeSymbol.formFlatName(name, owner); 695 ClassSymbol c = getClass(msym, flatname); 696 if (c == null) { 697 c = defineClass(name, owner); 698 doEnterClass(msym, c); 699 } else if ((c.name != name || c.owner != owner) && owner.kind == TYP && 700 c.owner.kind == PCK && ((c.flags_field & FROM_SOURCE) == 0)) { 701 // reassign fields of classes that might have been loaded with 702 // their flat names. 703 c.owner.members().remove(c); 704 c.name = name; 705 c.owner = owner; 706 c.fullname = ClassSymbol.formFullName(name, owner); 707 } 708 return c; 709 } 710 711 public ClassSymbol getClass(ModuleSymbol msym, Name flatName) { 712 Assert.checkNonNull(msym, flatName::toString); 713 return classes.getOrDefault(flatName, Collections.emptyMap()).get(msym); 714 } 715 716 public PackageSymbol lookupPackage(ModuleSymbol msym, Name flatName) { 717 return lookupPackage(msym, flatName, false); 718 } 719 720 private PackageSymbol lookupPackage(ModuleSymbol msym, Name flatName, boolean onlyExisting) { 721 Assert.checkNonNull(msym); 722 723 if (flatName.isEmpty()) { 724 //unnamed packages only from the current module - visiblePackages contains *root* package, not unnamed package! 725 return msym.unnamedPackage; 726 } 727 728 if (msym == noModule) { 729 return enterPackage(msym, flatName); 730 } 731 732 msym.complete(); 733 734 PackageSymbol pack; 735 736 pack = msym.visiblePackages.get(flatName); 737 738 if (pack != null) 739 return pack; 740 741 pack = getPackage(msym, flatName); 742 743 if ((pack != null && pack.exists()) || onlyExisting) 744 return pack; 745 746 boolean dependsOnUnnamed = msym.requires != null && 747 msym.requires.stream() 748 .map(rd -> rd.module) 749 .anyMatch(mod -> mod == unnamedModule); 750 751 if (dependsOnUnnamed) { 752 //msyms depends on the unnamed module, for which we generally don't know 753 //the list of packages it "exports" ahead of time. So try to lookup the package in the 754 //current module, and in the unnamed module and see if it exists in one of them 755 PackageSymbol unnamedPack = getPackage(unnamedModule, flatName); 756 757 if (unnamedPack != null && unnamedPack.exists()) { 758 msym.visiblePackages.put(unnamedPack.fullname, unnamedPack); 759 return unnamedPack; 760 } 761 762 pack = enterPackage(msym, flatName); 763 pack.complete(); 764 if (pack.exists()) 765 return pack; 766 767 unnamedPack = enterPackage(unnamedModule, flatName); 768 unnamedPack.complete(); 769 if (unnamedPack.exists()) { 770 msym.visiblePackages.put(unnamedPack.fullname, unnamedPack); 771 return unnamedPack; 772 } 773 774 return pack; 775 } 776 777 return enterPackage(msym, flatName); 778 } 779 780 private static final Map<ModuleSymbol, ClassSymbol> EMPTY = new HashMap<>(); 781 782 public void removeClass(ModuleSymbol msym, Name flatName) { 783 classes.getOrDefault(flatName, EMPTY).remove(msym); 784 } 785 786 public Iterable<ClassSymbol> getAllClasses() { 787 return () -> Iterators.createCompoundIterator(classes.values(), v -> v.values().iterator()); 788 } 789 790 private void doEnterClass(ModuleSymbol msym, ClassSymbol cs) { 791 classes.computeIfAbsent(cs.flatname, n -> new HashMap<>()).put(msym, cs); 792 } 793 794 /** Create a new member or toplevel class symbol with given flat name 795 * and enter in `classes' unless already there. 796 */ 797 public ClassSymbol enterClass(ModuleSymbol msym, Name flatname) { 798 Assert.checkNonNull(msym); 799 PackageSymbol ps = lookupPackage(msym, Convert.packagePart(flatname)); 800 Assert.checkNonNull(ps); 801 Assert.checkNonNull(ps.modle); 802 ClassSymbol c = getClass(ps.modle, flatname); 803 if (c == null) { 804 c = defineClass(Convert.shortName(flatname), ps); 805 doEnterClass(ps.modle, c); 806 return c; 807 } else 808 return c; 809 } 810 811 /** Check to see if a package exists, given its fully qualified name. 812 */ 813 public boolean packageExists(ModuleSymbol msym, Name fullname) { 814 Assert.checkNonNull(msym); 815 PackageSymbol pack = lookupPackage(msym, fullname, true); 816 return pack != null && pack.exists(); 817 } 818 819 /** Make a package, given its fully qualified name. 820 */ 821 public PackageSymbol enterPackage(ModuleSymbol currModule, Name fullname) { 822 Assert.checkNonNull(currModule); 823 PackageSymbol p = getPackage(currModule, fullname); 824 if (p == null) { 825 Assert.check(!fullname.isEmpty(), () -> "rootPackage missing!; currModule: " + currModule); 826 p = new PackageSymbol( 827 Convert.shortName(fullname), 828 enterPackage(currModule, Convert.packagePart(fullname))); 829 p.completer = initialCompleter; 830 p.modle = currModule; 831 doEnterPackage(currModule, p); 832 } 833 return p; 834 } 835 836 private void doEnterPackage(ModuleSymbol msym, PackageSymbol pack) { 837 packages.computeIfAbsent(pack.fullname, n -> new HashMap<>()).put(msym, pack); 838 msym.enclosedPackages = msym.enclosedPackages.prepend(pack); 839 } 840 841 private void addRootPackageFor(ModuleSymbol module) { 842 doEnterPackage(module, rootPackage); 843 PackageSymbol unnamedPackage = new PackageSymbol(names.empty, rootPackage) { 844 @Override 845 public String toString() { 846 return messages.getLocalizedString("compiler.misc.unnamed.package"); 847 } 848 }; 849 unnamedPackage.modle = module; 850 //we cannot use a method reference below, as initialCompleter might be null now 851 unnamedPackage.completer = s -> initialCompleter.complete(s); 852 unnamedPackage.flags_field |= EXISTS; 853 module.unnamedPackage = unnamedPackage; 854 } 855 856 public PackageSymbol getPackage(ModuleSymbol module, Name fullname) { 857 return packages.getOrDefault(fullname, Collections.emptyMap()).get(module); 858 } 859 860 public ModuleSymbol enterModule(Name name) { 861 ModuleSymbol msym = modules.get(name); 862 if (msym == null) { 863 msym = ModuleSymbol.create(name, names.module_info); 864 addRootPackageFor(msym); 865 msym.completer = s -> moduleCompleter.complete(s); //bootstrap issues 866 modules.put(name, msym); 867 } 868 return msym; 869 } 870 871 public ModuleSymbol getModule(Name name) { 872 return modules.get(name); 873 } 874 875 //temporary: 876 public ModuleSymbol inferModule(Name packageName) { 877 if (packageName.isEmpty()) 878 return java_base == noModule ? noModule : unnamedModule;//! 879 880 ModuleSymbol msym = null; 881 Map<ModuleSymbol,PackageSymbol> map = packages.get(packageName); 882 if (map == null) 883 return null; 884 for (Map.Entry<ModuleSymbol,PackageSymbol> e: map.entrySet()) { 885 if (!e.getValue().members().isEmpty()) { 886 if (msym == null) { 887 msym = e.getKey(); 888 } else { 889 return null; 890 } 891 } 892 } 893 return msym; 894 } 895 896 public List<ModuleSymbol> listPackageModules(Name packageName) { 897 if (packageName.isEmpty()) 898 return List.nil(); 899 900 List<ModuleSymbol> result = List.nil(); 901 Map<ModuleSymbol,PackageSymbol> map = packages.get(packageName); 902 if (map != null) { 903 for (Map.Entry<ModuleSymbol, PackageSymbol> e: map.entrySet()) { 904 if (!e.getValue().members().isEmpty()) { 905 result = result.prepend(e.getKey()); 906 } 907 } 908 } 909 return result; 910 } 911 912 public Collection<ModuleSymbol> getAllModules() { 913 return modules.values(); 914 } 915 916 public Iterable<ClassSymbol> getClassesForName(Name candidate) { 917 return classes.getOrDefault(candidate, Collections.emptyMap()).values(); 918 } 919 920 public Iterable<PackageSymbol> getPackagesForName(Name candidate) { 921 return packages.getOrDefault(candidate, Collections.emptyMap()).values(); 922 } 923 }