Symtab.java revision 2601:8e638f046bf0
1/* 2 * Copyright (c) 1999, 2014, 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 26package com.sun.tools.javac.code; 27 28import java.util.HashMap; 29import java.util.HashSet; 30import java.util.Map; 31import java.util.Set; 32 33import javax.lang.model.element.ElementVisitor; 34import javax.tools.JavaFileObject; 35 36 37import com.sun.tools.javac.code.Scope.WriteableScope; 38import com.sun.tools.javac.code.Symbol.ClassSymbol; 39import com.sun.tools.javac.code.Symbol.Completer; 40import com.sun.tools.javac.code.Symbol.CompletionFailure; 41import com.sun.tools.javac.code.Symbol.MethodSymbol; 42import com.sun.tools.javac.code.Symbol.OperatorSymbol; 43import com.sun.tools.javac.code.Symbol.PackageSymbol; 44import com.sun.tools.javac.code.Symbol.TypeSymbol; 45import com.sun.tools.javac.code.Symbol.VarSymbol; 46import com.sun.tools.javac.code.Type.BottomType; 47import com.sun.tools.javac.code.Type.ClassType; 48import com.sun.tools.javac.code.Type.ErrorType; 49import com.sun.tools.javac.code.Type.JCPrimitiveType; 50import com.sun.tools.javac.code.Type.JCVoidType; 51import com.sun.tools.javac.code.Type.MethodType; 52import com.sun.tools.javac.code.Type.UnknownType; 53import com.sun.tools.javac.jvm.ByteCodes; 54import com.sun.tools.javac.jvm.Target; 55import com.sun.tools.javac.util.Assert; 56import com.sun.tools.javac.util.Context; 57import com.sun.tools.javac.util.Convert; 58import com.sun.tools.javac.util.DefinedBy; 59import com.sun.tools.javac.util.DefinedBy.Api; 60import com.sun.tools.javac.util.JavacMessages; 61import com.sun.tools.javac.util.List; 62import com.sun.tools.javac.util.Log; 63import com.sun.tools.javac.util.Name; 64import com.sun.tools.javac.util.Names; 65 66import static com.sun.tools.javac.code.Flags.*; 67import static com.sun.tools.javac.code.Kinds.PCK; 68import static com.sun.tools.javac.code.Kinds.TYP; 69import static com.sun.tools.javac.jvm.ByteCodes.*; 70import 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 */ 83public 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 Completer initialCompleter; 110 private final Target target; 111 112 /** A symbol for the root package. 113 */ 114 public final PackageSymbol rootPackage; 115 116 /** A symbol for the unnamed package. 117 */ 118 public final PackageSymbol unnamedPackage; 119 120 /** A symbol that stands for a missing symbol. 121 */ 122 public final TypeSymbol noSymbol; 123 124 /** The error symbol. 125 */ 126 public final ClassSymbol errSymbol; 127 128 /** The unknown symbol. 129 */ 130 public final ClassSymbol unknownSymbol; 131 132 /** A value for the errType, with a originalType of noType */ 133 public final Type errType; 134 135 /** A value for the unknown type. */ 136 public final Type unknownType; 137 138 /** The builtin type of all arrays. */ 139 public final ClassSymbol arrayClass; 140 public final MethodSymbol arrayCloneMethod; 141 142 /** VGJ: The (singleton) type of all bound types. */ 143 public final ClassSymbol boundClass; 144 145 /** The builtin type of all methods. */ 146 public final ClassSymbol methodClass; 147 148 /** Predefined types. 149 */ 150 public final Type objectType; 151 public final Type classType; 152 public final Type classLoaderType; 153 public final Type stringType; 154 public final Type stringBufferType; 155 public final Type stringBuilderType; 156 public final Type cloneableType; 157 public final Type serializableType; 158 public final Type serializedLambdaType; 159 public final Type methodHandleType; 160 public final Type methodHandleLookupType; 161 public final Type methodTypeType; 162 public final Type nativeHeaderType; 163 public final Type throwableType; 164 public final Type errorType; 165 public final Type interruptedExceptionType; 166 public final Type illegalArgumentExceptionType; 167 public final Type exceptionType; 168 public final Type runtimeExceptionType; 169 public final Type classNotFoundExceptionType; 170 public final Type noClassDefFoundErrorType; 171 public final Type noSuchFieldErrorType; 172 public final Type assertionErrorType; 173 public final Type cloneNotSupportedExceptionType; 174 public final Type annotationType; 175 public final TypeSymbol enumSym; 176 public final Type listType; 177 public final Type collectionsType; 178 public final Type comparableType; 179 public final Type comparatorType; 180 public final Type arraysType; 181 public final Type iterableType; 182 public final Type iteratorType; 183 public final Type annotationTargetType; 184 public final Type overrideType; 185 public final Type retentionType; 186 public final Type deprecatedType; 187 public final Type suppressWarningsType; 188 public final Type inheritedType; 189 public final Type profileType; 190 public final Type proprietaryType; 191 public final Type systemType; 192 public final Type autoCloseableType; 193 public final Type trustMeType; 194 public final Type lambdaMetafactory; 195 public final Type repeatableType; 196 public final Type documentedType; 197 public final Type elementTypeType; 198 public final Type functionalInterfaceType; 199 200 /** The symbol representing the length field of an array. 201 */ 202 public final VarSymbol lengthVar; 203 204 /** The null check operator. */ 205 public final OperatorSymbol nullcheck; 206 207 /** The symbol representing the final finalize method on enums */ 208 public final MethodSymbol enumFinalFinalize; 209 210 /** The symbol representing the close method on TWR AutoCloseable type */ 211 public final MethodSymbol autoCloseableClose; 212 213 /** The predefined type that belongs to a tag. 214 */ 215 public final Type[] typeOfTag = new Type[TypeTag.getTypeTagCount()]; 216 217 /** The name of the class that belongs to a basix type tag. 218 */ 219 public final Name[] boxedName = new Name[TypeTag.getTypeTagCount()]; 220 221 /** A set containing all operator names. 222 */ 223 public final Set<Name> operatorNames = new HashSet<>(); 224 225 /** A hashtable containing the encountered top-level and member classes, 226 * indexed by flat names. The table does not contain local classes. 227 * It should be updated from the outside to reflect classes defined 228 * by compiled source files. 229 */ 230 public final Map<Name, ClassSymbol> classes = new HashMap<>(); 231 232 /** A hashtable containing the encountered packages. 233 * the table should be updated from outside to reflect packages defined 234 * by compiled source files. 235 */ 236 public final Map<Name, PackageSymbol> packages = new HashMap<>(); 237 238 public void initType(Type type, ClassSymbol c) { 239 type.tsym = c; 240 typeOfTag[type.getTag().ordinal()] = type; 241 } 242 243 public void initType(Type type, String name) { 244 initType( 245 type, 246 new ClassSymbol( 247 PUBLIC, names.fromString(name), type, rootPackage)); 248 } 249 250 public void initType(Type type, String name, String bname) { 251 initType(type, name); 252 boxedName[type.getTag().ordinal()] = names.fromString("java.lang." + bname); 253 } 254 255 /** The class symbol that owns all predefined symbols. 256 */ 257 public final ClassSymbol predefClass; 258 259 /** Enter a constant into symbol table. 260 * @param name The constant's name. 261 * @param type The constant's type. 262 */ 263 private VarSymbol enterConstant(String name, Type type) { 264 VarSymbol c = new VarSymbol( 265 PUBLIC | STATIC | FINAL, 266 names.fromString(name), 267 type, 268 predefClass); 269 c.setData(type.constValue()); 270 predefClass.members().enter(c); 271 return c; 272 } 273 274 /** Enter a binary operation into symbol table. 275 * @param name The name of the operator. 276 * @param left The type of the left operand. 277 * @param right The type of the left operand. 278 * @param res The operation's result type. 279 * @param opcode The operation's bytecode instruction. 280 */ 281 private void enterBinop(String name, 282 Type left, Type right, Type res, 283 int opcode) { 284 predefClass.members().enter( 285 new OperatorSymbol( 286 makeOperatorName(name), 287 new MethodType(List.of(left, right), res, 288 List.<Type>nil(), methodClass), 289 opcode, 290 predefClass)); 291 } 292 293 /** Enter a binary operation, as above but with two opcodes, 294 * which get encoded as 295 * {@code (opcode1 << ByteCodeTags.preShift) + opcode2 }. 296 * @param opcode1 First opcode. 297 * @param opcode2 Second opcode. 298 */ 299 private void enterBinop(String name, 300 Type left, Type right, Type res, 301 int opcode1, int opcode2) { 302 enterBinop( 303 name, left, right, res, (opcode1 << ByteCodes.preShift) | opcode2); 304 } 305 306 /** Enter a unary operation into symbol table. 307 * @param name The name of the operator. 308 * @param arg The type of the operand. 309 * @param res The operation's result type. 310 * @param opcode The operation's bytecode instruction. 311 */ 312 private OperatorSymbol enterUnop(String name, 313 Type arg, 314 Type res, 315 int opcode) { 316 OperatorSymbol sym = 317 new OperatorSymbol(makeOperatorName(name), 318 new MethodType(List.of(arg), 319 res, 320 List.<Type>nil(), 321 methodClass), 322 opcode, 323 predefClass); 324 predefClass.members().enter(sym); 325 return sym; 326 } 327 328 /** 329 * Create a new operator name from corresponding String representation 330 * and add the name to the set of known operator names. 331 */ 332 private Name makeOperatorName(String name) { 333 Name opName = names.fromString(name); 334 operatorNames.add(opName); 335 return opName; 336 } 337 338 /** Enter a class into symbol table. 339 * @param s The name of the class. 340 */ 341 private Type enterClass(String s) { 342 return enterClass(names.fromString(s)).type; 343 } 344 345 public void synthesizeEmptyInterfaceIfMissing(final Type type) { 346 final Completer completer = type.tsym.completer; 347 if (completer != null) { 348 type.tsym.completer = new Completer() { 349 public void complete(Symbol sym) throws CompletionFailure { 350 try { 351 completer.complete(sym); 352 } catch (CompletionFailure e) { 353 sym.flags_field |= (PUBLIC | INTERFACE); 354 ((ClassType) sym.type).supertype_field = objectType; 355 } 356 } 357 }; 358 } 359 } 360 361 public void synthesizeBoxTypeIfMissing(final Type type) { 362 ClassSymbol sym = enterClass(boxedName[type.getTag().ordinal()]); 363 final Completer completer = sym.completer; 364 if (completer != null) { 365 sym.completer = new Completer() { 366 public void complete(Symbol sym) throws CompletionFailure { 367 try { 368 completer.complete(sym); 369 } catch (CompletionFailure e) { 370 sym.flags_field |= PUBLIC; 371 ((ClassType) sym.type).supertype_field = objectType; 372 MethodSymbol boxMethod = 373 new MethodSymbol(PUBLIC | STATIC, names.valueOf, 374 new MethodType(List.of(type), sym.type, 375 List.<Type>nil(), methodClass), 376 sym); 377 sym.members().enter(boxMethod); 378 MethodSymbol unboxMethod = 379 new MethodSymbol(PUBLIC, 380 type.tsym.name.append(names.Value), // x.intValue() 381 new MethodType(List.<Type>nil(), type, 382 List.<Type>nil(), methodClass), 383 sym); 384 sym.members().enter(unboxMethod); 385 } 386 } 387 }; 388 } 389 390 } 391 392 // Enter a synthetic class that is used to mark classes in ct.sym. 393 // This class does not have a class file. 394 private Type enterSyntheticAnnotation(String name) { 395 ClassType type = (ClassType)enterClass(name); 396 ClassSymbol sym = (ClassSymbol)type.tsym; 397 sym.completer = null; 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 protected Symtab(Context context) throws CompletionFailure { 412 context.put(symtabKey, this); 413 414 names = Names.instance(context); 415 target = Target.instance(context); 416 417 // Create the unknown type 418 unknownType = new UnknownType(); 419 420 // create the basic builtin symbols 421 rootPackage = new PackageSymbol(names.empty, null); 422 packages.put(names.empty, rootPackage); 423 final JavacMessages messages = JavacMessages.instance(context); 424 unnamedPackage = new PackageSymbol(names.empty, rootPackage) { 425 public String toString() { 426 return messages.getLocalizedString("compiler.misc.unnamed.package"); 427 } 428 }; 429 noSymbol = new TypeSymbol(Kinds.NIL, 0, names.empty, Type.noType, rootPackage) { 430 @DefinedBy(Api.LANGUAGE_MODEL) 431 public <R, P> R accept(ElementVisitor<R, P> v, P p) { 432 return v.visitUnknown(this, p); 433 } 434 }; 435 436 // create the error symbols 437 errSymbol = new ClassSymbol(PUBLIC|STATIC|ACYCLIC, names.any, null, rootPackage); 438 errType = new ErrorType(errSymbol, Type.noType); 439 440 unknownSymbol = new ClassSymbol(PUBLIC|STATIC|ACYCLIC, names.fromString("<any?>"), null, rootPackage); 441 unknownSymbol.members_field = new Scope.ErrorScope(unknownSymbol); 442 unknownSymbol.type = unknownType; 443 444 // initialize builtin types 445 initType(byteType, "byte", "Byte"); 446 initType(shortType, "short", "Short"); 447 initType(charType, "char", "Character"); 448 initType(intType, "int", "Integer"); 449 initType(longType, "long", "Long"); 450 initType(floatType, "float", "Float"); 451 initType(doubleType, "double", "Double"); 452 initType(booleanType, "boolean", "Boolean"); 453 initType(voidType, "void", "Void"); 454 initType(botType, "<nulltype>"); 455 initType(errType, errSymbol); 456 initType(unknownType, unknownSymbol); 457 458 // the builtin class of all arrays 459 arrayClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Array, noSymbol); 460 461 // VGJ 462 boundClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Bound, noSymbol); 463 boundClass.members_field = new Scope.ErrorScope(boundClass); 464 465 // the builtin class of all methods 466 methodClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Method, noSymbol); 467 methodClass.members_field = new Scope.ErrorScope(boundClass); 468 469 // Create class to hold all predefined constants and operations. 470 predefClass = new ClassSymbol(PUBLIC|ACYCLIC, names.empty, rootPackage); 471 WriteableScope scope = WriteableScope.create(predefClass); 472 predefClass.members_field = scope; 473 474 // Get the initial completer for Symbols from the ClassFinder 475 initialCompleter = ClassFinder.instance(context).getCompleter(); 476 rootPackage.completer = initialCompleter; 477 unnamedPackage.completer = initialCompleter; 478 479 // Enter symbols for basic types. 480 scope.enter(byteType.tsym); 481 scope.enter(shortType.tsym); 482 scope.enter(charType.tsym); 483 scope.enter(intType.tsym); 484 scope.enter(longType.tsym); 485 scope.enter(floatType.tsym); 486 scope.enter(doubleType.tsym); 487 scope.enter(booleanType.tsym); 488 scope.enter(errType.tsym); 489 490 // Enter symbol for the errSymbol 491 scope.enter(errSymbol); 492 493 classes.put(predefClass.fullname, predefClass); 494 495 // Enter predefined classes. 496 objectType = enterClass("java.lang.Object"); 497 classType = enterClass("java.lang.Class"); 498 stringType = enterClass("java.lang.String"); 499 stringBufferType = enterClass("java.lang.StringBuffer"); 500 stringBuilderType = enterClass("java.lang.StringBuilder"); 501 cloneableType = enterClass("java.lang.Cloneable"); 502 throwableType = enterClass("java.lang.Throwable"); 503 serializableType = enterClass("java.io.Serializable"); 504 serializedLambdaType = enterClass("java.lang.invoke.SerializedLambda"); 505 methodHandleType = enterClass("java.lang.invoke.MethodHandle"); 506 methodHandleLookupType = enterClass("java.lang.invoke.MethodHandles$Lookup"); 507 methodTypeType = enterClass("java.lang.invoke.MethodType"); 508 errorType = enterClass("java.lang.Error"); 509 illegalArgumentExceptionType = enterClass("java.lang.IllegalArgumentException"); 510 interruptedExceptionType = enterClass("java.lang.InterruptedException"); 511 exceptionType = enterClass("java.lang.Exception"); 512 runtimeExceptionType = enterClass("java.lang.RuntimeException"); 513 classNotFoundExceptionType = enterClass("java.lang.ClassNotFoundException"); 514 noClassDefFoundErrorType = enterClass("java.lang.NoClassDefFoundError"); 515 noSuchFieldErrorType = enterClass("java.lang.NoSuchFieldError"); 516 assertionErrorType = enterClass("java.lang.AssertionError"); 517 cloneNotSupportedExceptionType = enterClass("java.lang.CloneNotSupportedException"); 518 annotationType = enterClass("java.lang.annotation.Annotation"); 519 classLoaderType = enterClass("java.lang.ClassLoader"); 520 enumSym = enterClass(names.java_lang_Enum); 521 enumFinalFinalize = 522 new MethodSymbol(PROTECTED|FINAL|HYPOTHETICAL, 523 names.finalize, 524 new MethodType(List.<Type>nil(), voidType, 525 List.<Type>nil(), methodClass), 526 enumSym); 527 listType = enterClass("java.util.List"); 528 collectionsType = enterClass("java.util.Collections"); 529 comparableType = enterClass("java.lang.Comparable"); 530 comparatorType = enterClass("java.util.Comparator"); 531 arraysType = enterClass("java.util.Arrays"); 532 iterableType = enterClass("java.lang.Iterable"); 533 iteratorType = enterClass("java.util.Iterator"); 534 annotationTargetType = enterClass("java.lang.annotation.Target"); 535 overrideType = enterClass("java.lang.Override"); 536 retentionType = enterClass("java.lang.annotation.Retention"); 537 deprecatedType = enterClass("java.lang.Deprecated"); 538 suppressWarningsType = enterClass("java.lang.SuppressWarnings"); 539 inheritedType = enterClass("java.lang.annotation.Inherited"); 540 repeatableType = enterClass("java.lang.annotation.Repeatable"); 541 documentedType = enterClass("java.lang.annotation.Documented"); 542 elementTypeType = enterClass("java.lang.annotation.ElementType"); 543 systemType = enterClass("java.lang.System"); 544 autoCloseableType = enterClass("java.lang.AutoCloseable"); 545 autoCloseableClose = new MethodSymbol(PUBLIC, 546 names.close, 547 new MethodType(List.<Type>nil(), voidType, 548 List.of(exceptionType), methodClass), 549 autoCloseableType.tsym); 550 trustMeType = enterClass("java.lang.SafeVarargs"); 551 nativeHeaderType = enterClass("java.lang.annotation.Native"); 552 lambdaMetafactory = enterClass("java.lang.invoke.LambdaMetafactory"); 553 functionalInterfaceType = enterClass("java.lang.FunctionalInterface"); 554 555 synthesizeEmptyInterfaceIfMissing(autoCloseableType); 556 synthesizeEmptyInterfaceIfMissing(cloneableType); 557 synthesizeEmptyInterfaceIfMissing(serializableType); 558 synthesizeEmptyInterfaceIfMissing(lambdaMetafactory); 559 synthesizeEmptyInterfaceIfMissing(serializedLambdaType); 560 synthesizeBoxTypeIfMissing(doubleType); 561 synthesizeBoxTypeIfMissing(floatType); 562 synthesizeBoxTypeIfMissing(voidType); 563 564 // Enter a synthetic class that is used to mark internal 565 // proprietary classes in ct.sym. This class does not have a 566 // class file. 567 proprietaryType = enterSyntheticAnnotation("sun.Proprietary+Annotation"); 568 569 // Enter a synthetic class that is used to provide profile info for 570 // classes in ct.sym. This class does not have a class file. 571 profileType = enterSyntheticAnnotation("jdk.Profile+Annotation"); 572 MethodSymbol m = new MethodSymbol(PUBLIC | ABSTRACT, names.value, intType, profileType.tsym); 573 profileType.tsym.members().enter(m); 574 575 // Enter a class for arrays. 576 // The class implements java.lang.Cloneable and java.io.Serializable. 577 // It has a final length field and a clone method. 578 ClassType arrayClassType = (ClassType)arrayClass.type; 579 arrayClassType.supertype_field = objectType; 580 arrayClassType.interfaces_field = List.of(cloneableType, serializableType); 581 arrayClass.members_field = WriteableScope.create(arrayClass); 582 lengthVar = new VarSymbol( 583 PUBLIC | FINAL, 584 names.length, 585 intType, 586 arrayClass); 587 arrayClass.members().enter(lengthVar); 588 arrayCloneMethod = new MethodSymbol( 589 PUBLIC, 590 names.clone, 591 new MethodType(List.<Type>nil(), objectType, 592 List.<Type>nil(), methodClass), 593 arrayClass); 594 arrayClass.members().enter(arrayCloneMethod); 595 596 // Enter operators. 597 /* Internally we use +++, --- for unary +, - to reduce +, - operators 598 * overloading 599 */ 600 enterUnop("+++", doubleType, doubleType, nop); 601 enterUnop("+++", floatType, floatType, nop); 602 enterUnop("+++", longType, longType, nop); 603 enterUnop("+++", intType, intType, nop); 604 605 enterUnop("---", doubleType, doubleType, dneg); 606 enterUnop("---", floatType, floatType, fneg); 607 enterUnop("---", longType, longType, lneg); 608 enterUnop("---", intType, intType, ineg); 609 610 enterUnop("~", longType, longType, lxor); 611 enterUnop("~", intType, intType, ixor); 612 613 enterUnop("++", doubleType, doubleType, dadd); 614 enterUnop("++", floatType, floatType, fadd); 615 enterUnop("++", longType, longType, ladd); 616 enterUnop("++", intType, intType, iadd); 617 enterUnop("++", charType, charType, iadd); 618 enterUnop("++", shortType, shortType, iadd); 619 enterUnop("++", byteType, byteType, iadd); 620 621 enterUnop("--", doubleType, doubleType, dsub); 622 enterUnop("--", floatType, floatType, fsub); 623 enterUnop("--", longType, longType, lsub); 624 enterUnop("--", intType, intType, isub); 625 enterUnop("--", charType, charType, isub); 626 enterUnop("--", shortType, shortType, isub); 627 enterUnop("--", byteType, byteType, isub); 628 629 enterUnop("!", booleanType, booleanType, bool_not); 630 nullcheck = enterUnop("<*nullchk*>", objectType, objectType, nullchk); 631 632 // string concatenation 633 enterBinop("+", stringType, objectType, stringType, string_add); 634 enterBinop("+", objectType, stringType, stringType, string_add); 635 enterBinop("+", stringType, stringType, stringType, string_add); 636 enterBinop("+", stringType, intType, stringType, string_add); 637 enterBinop("+", stringType, longType, stringType, string_add); 638 enterBinop("+", stringType, floatType, stringType, string_add); 639 enterBinop("+", stringType, doubleType, stringType, string_add); 640 enterBinop("+", stringType, booleanType, stringType, string_add); 641 enterBinop("+", stringType, botType, stringType, string_add); 642 enterBinop("+", intType, stringType, stringType, string_add); 643 enterBinop("+", longType, stringType, stringType, string_add); 644 enterBinop("+", floatType, stringType, stringType, string_add); 645 enterBinop("+", doubleType, stringType, stringType, string_add); 646 enterBinop("+", booleanType, stringType, stringType, string_add); 647 enterBinop("+", botType, stringType, stringType, string_add); 648 649 // these errors would otherwise be matched as string concatenation 650 enterBinop("+", botType, botType, botType, error); 651 enterBinop("+", botType, intType, botType, error); 652 enterBinop("+", botType, longType, botType, error); 653 enterBinop("+", botType, floatType, botType, error); 654 enterBinop("+", botType, doubleType, botType, error); 655 enterBinop("+", botType, booleanType, botType, error); 656 enterBinop("+", botType, objectType, botType, error); 657 enterBinop("+", intType, botType, botType, error); 658 enterBinop("+", longType, botType, botType, error); 659 enterBinop("+", floatType, botType, botType, error); 660 enterBinop("+", doubleType, botType, botType, error); 661 enterBinop("+", booleanType, botType, botType, error); 662 enterBinop("+", objectType, botType, botType, error); 663 664 enterBinop("+", doubleType, doubleType, doubleType, dadd); 665 enterBinop("+", floatType, floatType, floatType, fadd); 666 enterBinop("+", longType, longType, longType, ladd); 667 enterBinop("+", intType, intType, intType, iadd); 668 669 enterBinop("-", doubleType, doubleType, doubleType, dsub); 670 enterBinop("-", floatType, floatType, floatType, fsub); 671 enterBinop("-", longType, longType, longType, lsub); 672 enterBinop("-", intType, intType, intType, isub); 673 674 enterBinop("*", doubleType, doubleType, doubleType, dmul); 675 enterBinop("*", floatType, floatType, floatType, fmul); 676 enterBinop("*", longType, longType, longType, lmul); 677 enterBinop("*", intType, intType, intType, imul); 678 679 enterBinop("/", doubleType, doubleType, doubleType, ddiv); 680 enterBinop("/", floatType, floatType, floatType, fdiv); 681 enterBinop("/", longType, longType, longType, ldiv); 682 enterBinop("/", intType, intType, intType, idiv); 683 684 enterBinop("%", doubleType, doubleType, doubleType, dmod); 685 enterBinop("%", floatType, floatType, floatType, fmod); 686 enterBinop("%", longType, longType, longType, lmod); 687 enterBinop("%", intType, intType, intType, imod); 688 689 enterBinop("&", booleanType, booleanType, booleanType, iand); 690 enterBinop("&", longType, longType, longType, land); 691 enterBinop("&", intType, intType, intType, iand); 692 693 enterBinop("|", booleanType, booleanType, booleanType, ior); 694 enterBinop("|", longType, longType, longType, lor); 695 enterBinop("|", intType, intType, intType, ior); 696 697 enterBinop("^", booleanType, booleanType, booleanType, ixor); 698 enterBinop("^", longType, longType, longType, lxor); 699 enterBinop("^", intType, intType, intType, ixor); 700 701 enterBinop("<<", longType, longType, longType, lshll); 702 enterBinop("<<", intType, longType, intType, ishll); 703 enterBinop("<<", longType, intType, longType, lshl); 704 enterBinop("<<", intType, intType, intType, ishl); 705 706 enterBinop(">>", longType, longType, longType, lshrl); 707 enterBinop(">>", intType, longType, intType, ishrl); 708 enterBinop(">>", longType, intType, longType, lshr); 709 enterBinop(">>", intType, intType, intType, ishr); 710 711 enterBinop(">>>", longType, longType, longType, lushrl); 712 enterBinop(">>>", intType, longType, intType, iushrl); 713 enterBinop(">>>", longType, intType, longType, lushr); 714 enterBinop(">>>", intType, intType, intType, iushr); 715 716 enterBinop("<", doubleType, doubleType, booleanType, dcmpg, iflt); 717 enterBinop("<", floatType, floatType, booleanType, fcmpg, iflt); 718 enterBinop("<", longType, longType, booleanType, lcmp, iflt); 719 enterBinop("<", intType, intType, booleanType, if_icmplt); 720 721 enterBinop(">", doubleType, doubleType, booleanType, dcmpl, ifgt); 722 enterBinop(">", floatType, floatType, booleanType, fcmpl, ifgt); 723 enterBinop(">", longType, longType, booleanType, lcmp, ifgt); 724 enterBinop(">", intType, intType, booleanType, if_icmpgt); 725 726 enterBinop("<=", doubleType, doubleType, booleanType, dcmpg, ifle); 727 enterBinop("<=", floatType, floatType, booleanType, fcmpg, ifle); 728 enterBinop("<=", longType, longType, booleanType, lcmp, ifle); 729 enterBinop("<=", intType, intType, booleanType, if_icmple); 730 731 enterBinop(">=", doubleType, doubleType, booleanType, dcmpl, ifge); 732 enterBinop(">=", floatType, floatType, booleanType, fcmpl, ifge); 733 enterBinop(">=", longType, longType, booleanType, lcmp, ifge); 734 enterBinop(">=", intType, intType, booleanType, if_icmpge); 735 736 enterBinop("==", objectType, objectType, booleanType, if_acmpeq); 737 enterBinop("==", booleanType, booleanType, booleanType, if_icmpeq); 738 enterBinop("==", doubleType, doubleType, booleanType, dcmpl, ifeq); 739 enterBinop("==", floatType, floatType, booleanType, fcmpl, ifeq); 740 enterBinop("==", longType, longType, booleanType, lcmp, ifeq); 741 enterBinop("==", intType, intType, booleanType, if_icmpeq); 742 743 enterBinop("!=", objectType, objectType, booleanType, if_acmpne); 744 enterBinop("!=", booleanType, booleanType, booleanType, if_icmpne); 745 enterBinop("!=", doubleType, doubleType, booleanType, dcmpl, ifne); 746 enterBinop("!=", floatType, floatType, booleanType, fcmpl, ifne); 747 enterBinop("!=", longType, longType, booleanType, lcmp, ifne); 748 enterBinop("!=", intType, intType, booleanType, if_icmpne); 749 750 enterBinop("&&", booleanType, booleanType, booleanType, bool_and); 751 enterBinop("||", booleanType, booleanType, booleanType, bool_or); 752 } 753 754 /** Define a new class given its name and owner. 755 */ 756 public ClassSymbol defineClass(Name name, Symbol owner) { 757 ClassSymbol c = new ClassSymbol(0, name, owner); 758 if (owner.kind == PCK) 759 Assert.checkNull(classes.get(c.flatname), c); 760 c.completer = initialCompleter; 761 return c; 762 } 763 764 /** Create a new toplevel or member class symbol with given name 765 * and owner and enter in `classes' unless already there. 766 */ 767 public ClassSymbol enterClass(Name name, TypeSymbol owner) { 768 Name flatname = TypeSymbol.formFlatName(name, owner); 769 ClassSymbol c = classes.get(flatname); 770 if (c == null) { 771 c = defineClass(name, owner); 772 classes.put(flatname, c); 773 } else if ((c.name != name || c.owner != owner) && owner.kind == TYP && c.owner.kind == PCK) { 774 // reassign fields of classes that might have been loaded with 775 // their flat names. 776 c.owner.members().remove(c); 777 c.name = name; 778 c.owner = owner; 779 c.fullname = ClassSymbol.formFullName(name, owner); 780 } 781 return c; 782 } 783 784 /** 785 * Creates a new toplevel class symbol with given flat name and 786 * given class (or source) file. 787 * 788 * @param flatName a fully qualified binary class name 789 * @param classFile the class file or compilation unit defining 790 * the class (may be {@code null}) 791 * @return a newly created class symbol 792 * @throws AssertionError if the class symbol already exists 793 */ 794 public ClassSymbol enterClass(Name flatName, JavaFileObject classFile) { 795 ClassSymbol cs = classes.get(flatName); 796 if (cs != null) { 797 String msg = Log.format("%s: completer = %s; class file = %s; source file = %s", 798 cs.fullname, 799 cs.completer, 800 cs.classfile, 801 cs.sourcefile); 802 throw new AssertionError(msg); 803 } 804 Name packageName = Convert.packagePart(flatName); 805 PackageSymbol owner = packageName.isEmpty() 806 ? unnamedPackage 807 : enterPackage(packageName); 808 cs = defineClass(Convert.shortName(flatName), owner); 809 cs.classfile = classFile; 810 classes.put(flatName, cs); 811 return cs; 812 } 813 814 /** Create a new member or toplevel class symbol with given flat name 815 * and enter in `classes' unless already there. 816 */ 817 public ClassSymbol enterClass(Name flatname) { 818 ClassSymbol c = classes.get(flatname); 819 if (c == null) 820 return enterClass(flatname, (JavaFileObject)null); 821 else 822 return c; 823 } 824 825 /** Check to see if a package exists, given its fully qualified name. 826 */ 827 public boolean packageExists(Name fullname) { 828 return enterPackage(fullname).exists(); 829 } 830 831 /** Make a package, given its fully qualified name. 832 */ 833 public PackageSymbol enterPackage(Name fullname) { 834 PackageSymbol p = packages.get(fullname); 835 if (p == null) { 836 Assert.check(!fullname.isEmpty(), "rootPackage missing!"); 837 p = new PackageSymbol( 838 Convert.shortName(fullname), 839 enterPackage(Convert.packagePart(fullname))); 840 p.completer = initialCompleter; 841 packages.put(fullname, p); 842 } 843 return p; 844 } 845 846 /** Make a package, given its unqualified name and enclosing package. 847 */ 848 public PackageSymbol enterPackage(Name name, PackageSymbol owner) { 849 return enterPackage(TypeSymbol.formFullName(name, owner)); 850 } 851} 852