1 /*
2 * Copyright (c) 1999, 2024, 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.ArrayType;
49 import com.sun.tools.javac.code.Type.BottomType;
50 import com.sun.tools.javac.code.Type.ClassType;
51 import com.sun.tools.javac.code.Type.ErrorType;
52 import com.sun.tools.javac.code.Type.JCPrimitiveType;
53 import com.sun.tools.javac.code.Type.JCVoidType;
54 import com.sun.tools.javac.code.Type.MethodType;
55 import com.sun.tools.javac.code.Type.UnknownType;
56 import com.sun.tools.javac.code.Types.UniqueType;
57 import com.sun.tools.javac.comp.Modules;
58 import com.sun.tools.javac.jvm.Target;
59 import com.sun.tools.javac.util.Assert;
60 import com.sun.tools.javac.util.Context;
61 import com.sun.tools.javac.util.Convert;
62 import com.sun.tools.javac.util.DefinedBy;
63 import com.sun.tools.javac.util.DefinedBy.Api;
64 import com.sun.tools.javac.util.Iterators;
65 import com.sun.tools.javac.util.JavacMessages;
66 import com.sun.tools.javac.util.List;
67 import com.sun.tools.javac.util.Name;
68 import com.sun.tools.javac.util.Names;
69
70 import static com.sun.tools.javac.code.Flags.*;
71 import static com.sun.tools.javac.code.Kinds.Kind.*;
72 import static com.sun.tools.javac.code.TypeTag.*;
73
74 /** A class that defines all predefined constants and operators
75 * as well as special classes such as java.lang.Object, which need
76 * to be known to the compiler. All symbols are held in instance
77 * fields. This makes it possible to work in multiple concurrent
78 * projects, which might use different class files for library classes.
79 *
80 * <p><b>This is NOT part of any supported API.
81 * If you write code that depends on this, you do so at your own risk.
82 * This code and its internal interfaces are subject to change or
83 * deletion without notice.</b>
84 */
85 public class Symtab {
86 /** The context key for the symbol table. */
87 protected static final Context.Key<Symtab> symtabKey = new Context.Key<>();
88
89 /** Get the symbol table instance. */
90 public static Symtab instance(Context context) {
91 Symtab instance = context.get(symtabKey);
92 if (instance == null)
93 instance = new Symtab(context);
94 return instance;
95 }
96
97 /** Builtin types.
98 */
99 public final JCPrimitiveType byteType = new JCPrimitiveType(BYTE, null);
100 public final JCPrimitiveType charType = new JCPrimitiveType(CHAR, null);
101 public final JCPrimitiveType shortType = new JCPrimitiveType(SHORT, null);
102 public final JCPrimitiveType intType = new JCPrimitiveType(INT, null);
103 public final JCPrimitiveType longType = new JCPrimitiveType(LONG, null);
104 public final JCPrimitiveType floatType = new JCPrimitiveType(FLOAT, null);
105 public final JCPrimitiveType doubleType = new JCPrimitiveType(DOUBLE, null);
106 public final JCPrimitiveType booleanType = new JCPrimitiveType(BOOLEAN, null);
107 public final Type botType = new BottomType();
108 public final JCVoidType voidType = new JCVoidType();
109
110 private final Names names;
111 private final JavacMessages messages;
112 private final Completer initialCompleter;
113 private final Completer moduleCompleter;
114
115 /** A symbol for the unnamed module.
116 */
117 public final ModuleSymbol unnamedModule;
118
119 /** The error module.
120 */
121 public final ModuleSymbol errModule;
122
123 /** A symbol for no module, for use with -source 8 or less
124 */
125 public final ModuleSymbol noModule;
126
127 /** A symbol for the root package.
128 */
129 public final PackageSymbol rootPackage;
130
131 /** A symbol that stands for a missing symbol.
132 */
133 public final TypeSymbol noSymbol;
134
135 /** The error symbol.
136 */
137 public final ClassSymbol errSymbol;
138
139 /** The unknown symbol.
140 */
141 public final ClassSymbol unknownSymbol;
142
143 /** A value for the errType, with a originalType of noType */
144 public final Type errType;
145
146 /** A value for the unknown type. */
147 public final Type unknownType;
148
149 /** The builtin type of all arrays. */
150 public final ClassSymbol arrayClass;
151 public final MethodSymbol arrayCloneMethod;
152
153 /** VGJ: The (singleton) type of all bound types. */
154 public final ClassSymbol boundClass;
155
156 /** The builtin type of all methods. */
157 public final ClassSymbol methodClass;
158
159 /** A symbol for the java.base module.
160 */
161 public final ModuleSymbol java_base;
162
163 /** Predefined types.
164 */
165 public final Type objectType;
166 public final Type objectMethodsType;
167 public final Type exactConversionsSupportType;
168 public final Type objectsType;
169 public final Type classType;
170 public final Type classLoaderType;
171 public final Type stringType;
172 public final Type stringBufferType;
173 public final Type stringBuilderType;
174 public final Type cloneableType;
175 public final Type serializableType;
176 public final Type serializedLambdaType;
177 public final Type varHandleType;
178 public final Type methodHandleType;
179 public final Type methodHandlesType;
180 public final Type methodHandleLookupType;
181 public final Type methodTypeType;
182 public final Type nativeHeaderType;
183 public final Type throwableType;
184 public final Type errorType;
185 public final Type interruptedExceptionType;
186 public final Type illegalArgumentExceptionType;
187 public final Type exceptionType;
188 public final Type runtimeExceptionType;
189 public final Type classNotFoundExceptionType;
190 public final Type noClassDefFoundErrorType;
191 public final Type noSuchFieldErrorType;
192 public final Type assertionErrorType;
193 public final Type incompatibleClassChangeErrorType;
194 public final Type cloneNotSupportedExceptionType;
195 public final Type matchExceptionType;
196 public final Type annotationType;
197 public final TypeSymbol enumSym;
198 public final Type listType;
199 public final Type collectionsType;
200 public final Type comparableType;
201 public final Type comparatorType;
202 public final Type arraysType;
203 public final Type iterableType;
204 public final Type iteratorType;
205 public final Type annotationTargetType;
206 public final Type overrideType;
207 public final Type retentionType;
208 public final Type deprecatedType;
209 public final Type suppressWarningsType;
210 public final Type supplierType;
211 public final Type inheritedType;
212 public final Type profileType;
213 public final Type proprietaryType;
214 public final Type systemType;
215 public final Type autoCloseableType;
216 public final Type trustMeType;
217 public final Type lambdaMetafactory;
218 public final Type stringConcatFactory;
219 public final Type repeatableType;
220 public final Type documentedType;
221 public final Type elementTypeType;
222 public final Type functionalInterfaceType;
223 public final Type previewFeatureType;
224 public final Type previewFeatureInternalType;
225 public final Type restrictedType;
226 public final Type typeDescriptorType;
227 public final Type recordType;
228 public final Type switchBootstrapsType;
229 public final Type constantBootstrapsType;
230 public final Type valueBasedType;
231 public final Type valueBasedInternalType;
232 public final Type classDescType;
233 public final Type enumDescType;
234
235 // For serialization lint checking
236 public final Type objectStreamFieldType;
237 public final Type objectInputStreamType;
238 public final Type objectOutputStreamType;
239 public final Type ioExceptionType;
240 public final Type objectStreamExceptionType;
241 // For externalization lint checking
242 public final Type externalizableType;
243 public final Type objectInputType;
244 public final Type objectOutputType;
245
246 // For code reflection
247 public final Type codeReflectionType;
248 public final Type quotedType;
249 public final Type quotableType;
250 public final Type closureOpType;
251 public final Type lambdaOpType;
252 public final Type opInterpreterType;
253 public final Type opParserType;
254 public final Type opType;
255 public final MethodSymbol opInterpreterInvoke;
256 public final MethodSymbol opParserFromString;
257
258 /** The symbol representing the length field of an array.
259 */
260 public final VarSymbol lengthVar;
261
262 /** The symbol representing the final finalize method on enums */
263 public final MethodSymbol enumFinalFinalize;
264
265 /** The symbol representing the close method on TWR AutoCloseable type */
266 public final MethodSymbol autoCloseableClose;
267
268 /** The predefined type that belongs to a tag.
269 */
270 public final Type[] typeOfTag = new Type[TypeTag.getTypeTagCount()];
271
272 /** The name of the class that belongs to a basic type tag.
273 */
274 public final Name[] boxedName = new Name[TypeTag.getTypeTagCount()];
275
276 /** A hashtable containing the encountered top-level and member classes,
277 * indexed by flat names. The table does not contain local classes.
278 * It should be updated from the outside to reflect classes defined
279 * by compiled source files.
280 */
281 private final Map<Name, Map<ModuleSymbol,ClassSymbol>> classes = new HashMap<>();
282
283 /** A hashtable containing the encountered packages.
284 * the table should be updated from outside to reflect packages defined
285 * by compiled source files.
286 */
287 private final Map<Name, Map<ModuleSymbol,PackageSymbol>> packages = new HashMap<>();
288
289 /** A hashtable giving the encountered modules.
290 */
291 private final Map<Name, ModuleSymbol> modules = new LinkedHashMap<>();
292
293 private final Map<Types.UniqueType, VarSymbol> classFields = new HashMap<>();
294
295 public VarSymbol getClassField(Type type, Types types) {
296 return classFields.computeIfAbsent(
297 new UniqueType(type, types), k -> {
298 Type arg = null;
299 if (type.getTag() == ARRAY || type.getTag() == CLASS)
300 arg = types.erasure(type);
301 else if (type.isPrimitiveOrVoid())
302 arg = types.boxedClass(type).type;
303 else
304 throw new AssertionError(type);
305
306 Type t = new ClassType(
307 classType.getEnclosingType(), List.of(arg), classType.tsym);
308 return new VarSymbol(
309 STATIC | PUBLIC | FINAL, names._class, t, type.tsym);
310 });
311 }
312
313 public void initType(Type type, ClassSymbol c) {
314 type.tsym = c;
315 typeOfTag[type.getTag().ordinal()] = type;
316 }
317
318 public void initType(Type type, String name) {
319 initType(
320 type,
321 new ClassSymbol(
322 PUBLIC, names.fromString(name), type, rootPackage));
323 }
324
325 public void initType(Type type, String name, String bname) {
326 initType(type, name);
327 boxedName[type.getTag().ordinal()] = names.fromString("java.lang." + bname);
328 }
329
330 /** The class symbol that owns all predefined symbols.
331 */
332 public final ClassSymbol predefClass;
333
334 /** Enter a class into symbol table.
335 * @param s The name of the class.
336 */
337 private Type enterClass(String s) {
338 return enterClass(java_base, names.fromString(s)).type;
339 }
340
341 public void synthesizeEmptyInterfaceIfMissing(final Type type) {
342 final Completer completer = type.tsym.completer;
343 type.tsym.completer = new Completer() {
344 @Override
345 public void complete(Symbol sym) throws CompletionFailure {
346 try {
347 completer.complete(sym);
348 } catch (CompletionFailure e) {
349 sym.flags_field |= (PUBLIC | INTERFACE);
350 ((ClassType) sym.type).supertype_field = objectType;
351 }
352 }
353
354 @Override
355 public boolean isTerminal() {
356 return completer.isTerminal();
357 }
358 };
359 }
360
361 public void synthesizeBoxTypeIfMissing(final Type type) {
362 ClassSymbol sym = enterClass(java_base, boxedName[type.getTag().ordinal()]);
363 final Completer completer = sym.completer;
364 sym.completer = new Completer() {
365 @Override
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.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.nil(), type,
382 List.nil(), methodClass),
383 sym);
384 sym.members().enter(unboxMethod);
385 }
386 }
387
388 @Override
389 public boolean isTerminal() {
390 return completer.isTerminal();
391 }
392 };
393 }
394
395 // Enter a synthetic class that is used to mark classes in ct.sym.
396 // This class does not have a class file.
397 private Type enterSyntheticAnnotation(String name) {
398 // for now, leave the module null, to prevent problems from synthesizing the
399 // existence of a class in any specific module, including noModule
400 ClassType type = (ClassType)enterClass(java_base, names.fromString(name)).type;
401 ClassSymbol sym = (ClassSymbol)type.tsym;
402 sym.completer = Completer.NULL_COMPLETER;
403 sym.flags_field = PUBLIC|ACYCLIC|ANNOTATION|INTERFACE;
404 sym.erasure_field = type;
405 sym.members_field = WriteableScope.create(sym);
406 type.typarams_field = List.nil();
407 type.allparams_field = List.nil();
408 type.supertype_field = annotationType;
409 type.interfaces_field = List.nil();
410 return type;
411 }
412
413 /** Constructor; enters all predefined identifiers and operators
414 * into symbol table.
415 */
416 @SuppressWarnings("this-escape")
417 protected Symtab(Context context) throws CompletionFailure {
418 context.put(symtabKey, this);
419
420 names = Names.instance(context);
421
422 // Create the unknown type
423 unknownType = new UnknownType();
424
425 messages = JavacMessages.instance(context);
426
427 MissingInfoHandler missingInfoHandler = MissingInfoHandler.instance(context);
428
429 Target target = Target.instance(context);
430 rootPackage = new RootPackageSymbol(names.empty, null,
431 missingInfoHandler,
432 target.runtimeUseNestAccess());
433
434 // create the basic builtin symbols
435 unnamedModule = new ModuleSymbol(names.empty, null) {
436 {
437 directives = List.nil();
438 exports = List.nil();
439 provides = List.nil();
440 uses = List.nil();
441 ModuleSymbol java_base = enterModule(names.java_base);
442 com.sun.tools.javac.code.Directive.RequiresDirective d =
443 new com.sun.tools.javac.code.Directive.RequiresDirective(java_base,
444 EnumSet.of(com.sun.tools.javac.code.Directive.RequiresFlag.MANDATED));
445 requires = List.of(d);
446 }
447 @Override
448 public String toString() {
449 return messages.getLocalizedString("compiler.misc.unnamed.module");
450 }
451 };
452 addRootPackageFor(unnamedModule);
453 unnamedModule.enclosedPackages = unnamedModule.enclosedPackages.prepend(unnamedModule.unnamedPackage);
454
455 errModule = new ModuleSymbol(names.empty, null) {
456 {
457 directives = List.nil();
458 exports = List.nil();
459 provides = List.nil();
460 uses = List.nil();
461 ModuleSymbol java_base = enterModule(names.java_base);
462 com.sun.tools.javac.code.Directive.RequiresDirective d =
463 new com.sun.tools.javac.code.Directive.RequiresDirective(java_base,
464 EnumSet.of(com.sun.tools.javac.code.Directive.RequiresFlag.MANDATED));
465 requires = List.of(d);
466 }
467 };
468 addRootPackageFor(errModule);
469
470 noModule = new ModuleSymbol(names.empty, null) {
471 @Override public boolean isNoModule() {
472 return true;
473 }
474 };
475 addRootPackageFor(noModule);
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 unknownSymbol.members_field = new Scope.ErrorScope(unknownSymbol);
490 unknownSymbol.type = unknownType;
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 Source source = Source.instance(context);
541 if (Feature.MODULES.allowedInSource(source)) {
542 java_base = enterModule(names.java_base);
543 //avoid completing java.base during the Symtab initialization
544 java_base.completer = Completer.NULL_COMPLETER;
545 java_base.visiblePackages = Collections.emptyMap();
546 } else {
547 java_base = noModule;
548 }
549
550 // Get the initial completer for ModuleSymbols from Modules
551 moduleCompleter = Modules.instance(context).getCompleter();
552
553 // Enter predefined classes. All are assumed to be in the java.base module.
554 objectType = enterClass("java.lang.Object");
555 objectMethodsType = enterClass("java.lang.runtime.ObjectMethods");
556 exactConversionsSupportType = enterClass("java.lang.runtime.ExactConversionsSupport");
557 objectsType = enterClass("java.util.Objects");
558 classType = enterClass("java.lang.Class");
559 stringType = enterClass("java.lang.String");
560 stringBufferType = enterClass("java.lang.StringBuffer");
561 stringBuilderType = enterClass("java.lang.StringBuilder");
562 cloneableType = enterClass("java.lang.Cloneable");
563 throwableType = enterClass("java.lang.Throwable");
564 serializableType = enterClass("java.io.Serializable");
565 serializedLambdaType = enterClass("java.lang.invoke.SerializedLambda");
566 varHandleType = enterClass("java.lang.invoke.VarHandle");
567 methodHandleType = enterClass("java.lang.invoke.MethodHandle");
568 methodHandlesType = enterClass("java.lang.invoke.MethodHandles");
569 methodHandleLookupType = enterClass("java.lang.invoke.MethodHandles$Lookup");
570 methodTypeType = enterClass("java.lang.invoke.MethodType");
571 errorType = enterClass("java.lang.Error");
572 illegalArgumentExceptionType = enterClass("java.lang.IllegalArgumentException");
573 interruptedExceptionType = enterClass("java.lang.InterruptedException");
574 exceptionType = enterClass("java.lang.Exception");
575 runtimeExceptionType = enterClass("java.lang.RuntimeException");
576 classNotFoundExceptionType = enterClass("java.lang.ClassNotFoundException");
577 noClassDefFoundErrorType = enterClass("java.lang.NoClassDefFoundError");
578 noSuchFieldErrorType = enterClass("java.lang.NoSuchFieldError");
579 assertionErrorType = enterClass("java.lang.AssertionError");
580 incompatibleClassChangeErrorType = enterClass("java.lang.IncompatibleClassChangeError");
581 cloneNotSupportedExceptionType = enterClass("java.lang.CloneNotSupportedException");
582 matchExceptionType = enterClass("java.lang.MatchException");
583 annotationType = enterClass("java.lang.annotation.Annotation");
584 classLoaderType = enterClass("java.lang.ClassLoader");
585 enumSym = enterClass(java_base, names.java_lang_Enum);
586 enumFinalFinalize =
587 new MethodSymbol(PROTECTED|FINAL|HYPOTHETICAL,
588 names.finalize,
589 new MethodType(List.nil(), voidType,
590 List.nil(), methodClass),
591 enumSym);
592 listType = enterClass("java.util.List");
593 collectionsType = enterClass("java.util.Collections");
594 comparableType = enterClass("java.lang.Comparable");
595 comparatorType = enterClass("java.util.Comparator");
596 arraysType = enterClass("java.util.Arrays");
597 iterableType = enterClass("java.lang.Iterable");
598 iteratorType = enterClass("java.util.Iterator");
599 annotationTargetType = enterClass("java.lang.annotation.Target");
600 overrideType = enterClass("java.lang.Override");
601 retentionType = enterClass("java.lang.annotation.Retention");
602 deprecatedType = enterClass("java.lang.Deprecated");
603 suppressWarningsType = enterClass("java.lang.SuppressWarnings");
604 supplierType = enterClass("java.util.function.Supplier");
605 inheritedType = enterClass("java.lang.annotation.Inherited");
606 repeatableType = enterClass("java.lang.annotation.Repeatable");
607 documentedType = enterClass("java.lang.annotation.Documented");
608 elementTypeType = enterClass("java.lang.annotation.ElementType");
609 systemType = enterClass("java.lang.System");
610 autoCloseableType = enterClass("java.lang.AutoCloseable");
611 autoCloseableClose = new MethodSymbol(PUBLIC,
612 names.close,
613 new MethodType(List.nil(), voidType,
614 List.of(exceptionType), methodClass),
615 autoCloseableType.tsym);
616 trustMeType = enterClass("java.lang.SafeVarargs");
617 nativeHeaderType = enterClass("java.lang.annotation.Native");
618 lambdaMetafactory = enterClass("java.lang.invoke.LambdaMetafactory");
619 stringConcatFactory = enterClass("java.lang.invoke.StringConcatFactory");
620 functionalInterfaceType = enterClass("java.lang.FunctionalInterface");
621 previewFeatureType = enterClass("jdk.internal.javac.PreviewFeature");
622 previewFeatureInternalType = enterSyntheticAnnotation("jdk.internal.PreviewFeature+Annotation");
623 restrictedType = enterClass("jdk.internal.javac.Restricted");
624 typeDescriptorType = enterClass("java.lang.invoke.TypeDescriptor");
625 recordType = enterClass("java.lang.Record");
626 switchBootstrapsType = enterClass("java.lang.runtime.SwitchBootstraps");
627 constantBootstrapsType = enterClass("java.lang.invoke.ConstantBootstraps");
628 valueBasedType = enterClass("jdk.internal.ValueBased");
629 valueBasedInternalType = enterSyntheticAnnotation("jdk.internal.ValueBased+Annotation");
630 classDescType = enterClass("java.lang.constant.ClassDesc");
631 enumDescType = enterClass("java.lang.Enum$EnumDesc");
632 // For serialization lint checking
633 objectStreamFieldType = enterClass("java.io.ObjectStreamField");
634 objectInputStreamType = enterClass("java.io.ObjectInputStream");
635 objectOutputStreamType = enterClass("java.io.ObjectOutputStream");
636 ioExceptionType = enterClass("java.io.IOException");
637 objectStreamExceptionType = enterClass("java.io.ObjectStreamException");
638 externalizableType = enterClass("java.io.Externalizable");
639 objectInputType = enterClass("java.io.ObjectInput");
640 objectOutputType = enterClass("java.io.ObjectOutput");
641 // For code reflection
642 codeReflectionType = enterClass("java.lang.runtime.CodeReflection");
643 quotedType = enterClass("java.lang.reflect.code.Quoted");
644 quotableType = enterClass("java.lang.reflect.code.Quotable");
645 closureOpType = enterClass("java.lang.reflect.code.op.CoreOp$ClosureOp");
646 lambdaOpType = enterClass("java.lang.reflect.code.op.CoreOp$LambdaOp");
647 opInterpreterType = enterClass("java.lang.reflect.code.interpreter.Interpreter");
648 opType = enterClass("java.lang.reflect.code.Op");
649 opInterpreterInvoke = new MethodSymbol(PUBLIC | STATIC | VARARGS,
650 names.fromString("invoke"),
651 new MethodType(List.of(opType, new ArrayType(objectType, arrayClass)), objectType,
652 List.nil(), methodClass),
653 opInterpreterType.tsym);
654 opParserType = enterClass("java.lang.reflect.code.parser.OpParser");
655 opParserFromString = new MethodSymbol(PUBLIC | STATIC,
656 names.fromString("fromStringOfFuncOp"),
657 new MethodType(List.of(stringType), opType,
658 List.nil(), methodClass),
659 opParserType.tsym);
660 synthesizeEmptyInterfaceIfMissing(autoCloseableType);
661 synthesizeEmptyInterfaceIfMissing(cloneableType);
662 synthesizeEmptyInterfaceIfMissing(serializableType);
663 synthesizeEmptyInterfaceIfMissing(lambdaMetafactory);
664 synthesizeEmptyInterfaceIfMissing(serializedLambdaType);
665 synthesizeEmptyInterfaceIfMissing(stringConcatFactory);
666 synthesizeEmptyInterfaceIfMissing(quotedType);
667 synthesizeEmptyInterfaceIfMissing(quotableType);
668 synthesizeBoxTypeIfMissing(doubleType);
669 synthesizeBoxTypeIfMissing(floatType);
670 synthesizeBoxTypeIfMissing(voidType);
671
672 // Enter a synthetic class that is used to mark internal
673 // proprietary classes in ct.sym. This class does not have a
674 // class file.
675 proprietaryType = enterSyntheticAnnotation("sun.Proprietary+Annotation");
676
677 // Enter a synthetic class that is used to provide profile info for
678 // classes in ct.sym. This class does not have a class file.
679 profileType = enterSyntheticAnnotation("jdk.Profile+Annotation");
680 MethodSymbol m = new MethodSymbol(PUBLIC | ABSTRACT, names.value, intType, profileType.tsym);
681 profileType.tsym.members().enter(m);
682
683 // Enter a class for arrays.
684 // The class implements java.lang.Cloneable and java.io.Serializable.
685 // It has a final length field and a clone method.
686 ClassType arrayClassType = (ClassType)arrayClass.type;
687 arrayClassType.supertype_field = objectType;
688 arrayClassType.interfaces_field = List.of(cloneableType, serializableType);
689 arrayClass.members_field = WriteableScope.create(arrayClass);
690 lengthVar = new VarSymbol(
691 PUBLIC | FINAL,
692 names.length,
693 intType,
694 arrayClass);
695 arrayClass.members().enter(lengthVar);
696 arrayCloneMethod = new MethodSymbol(
697 PUBLIC,
698 names.clone,
699 new MethodType(List.nil(), objectType,
700 List.nil(), methodClass),
701 arrayClass);
702 arrayClass.members().enter(arrayCloneMethod);
703
704 if (java_base != noModule)
705 java_base.completer = moduleCompleter::complete; //bootstrap issues
706
707 }
708
709 /** Define a new class given its name and owner.
710 */
711 public ClassSymbol defineClass(Name name, Symbol owner) {
712 ClassSymbol c = new ClassSymbol(0, name, owner);
713 c.completer = initialCompleter;
714 return c;
715 }
716
717 /** Create a new toplevel or member class symbol with given name
718 * and owner and enter in `classes' unless already there.
719 */
720 public ClassSymbol enterClass(ModuleSymbol msym, Name name, TypeSymbol owner) {
721 Assert.checkNonNull(msym);
722 Name flatname = TypeSymbol.formFlatName(name, owner);
723 ClassSymbol c = getClass(msym, flatname);
724 if (c == null) {
725 c = defineClass(name, owner);
726 doEnterClass(msym, c);
727 } else if ((c.name != name || c.owner != owner) && owner.kind == TYP &&
728 c.owner.kind == PCK && ((c.flags_field & FROM_SOURCE) == 0)) {
729 // reassign fields of classes that might have been loaded with
730 // their flat names.
731 c.owner.members().remove(c);
732 c.name = name;
733 c.owner = owner;
734 c.fullname = ClassSymbol.formFullName(name, owner);
735 }
736 return c;
737 }
738
739 public ClassSymbol getClass(ModuleSymbol msym, Name flatName) {
740 Assert.checkNonNull(msym, flatName::toString);
741 return classes.getOrDefault(flatName, Collections.emptyMap()).get(msym);
742 }
743
744 public PackageSymbol lookupPackage(ModuleSymbol msym, Name flatName) {
745 return lookupPackage(msym, flatName, false);
746 }
747
748 private PackageSymbol lookupPackage(ModuleSymbol msym, Name flatName, boolean onlyExisting) {
749 Assert.checkNonNull(msym);
750
751 if (flatName.isEmpty()) {
752 //unnamed packages only from the current module - visiblePackages contains *root* package, not unnamed package!
753 return msym.unnamedPackage;
754 }
755
756 if (msym == noModule) {
757 return enterPackage(msym, flatName);
758 }
759
760 msym.complete();
761
762 PackageSymbol pack;
763
764 pack = msym.visiblePackages.get(flatName);
765
766 if (pack != null)
767 return pack;
768
769 pack = getPackage(msym, flatName);
770
771 if ((pack != null && pack.exists()) || onlyExisting)
772 return pack;
773
774 boolean dependsOnUnnamed = msym.requires != null &&
775 msym.requires.stream()
776 .map(rd -> rd.module)
777 .anyMatch(mod -> mod == unnamedModule);
778
779 if (dependsOnUnnamed) {
780 //msyms depends on the unnamed module, for which we generally don't know
781 //the list of packages it "exports" ahead of time. So try to lookup the package in the
782 //current module, and in the unnamed module and see if it exists in one of them
783 PackageSymbol unnamedPack = getPackage(unnamedModule, flatName);
784
785 if (unnamedPack != null && unnamedPack.exists()) {
786 msym.visiblePackages.put(unnamedPack.fullname, unnamedPack);
787 return unnamedPack;
788 }
789
790 pack = enterPackage(msym, flatName);
791 pack.complete();
792 if (pack.exists())
793 return pack;
794
795 unnamedPack = enterPackage(unnamedModule, flatName);
796 unnamedPack.complete();
797 if (unnamedPack.exists()) {
798 msym.visiblePackages.put(unnamedPack.fullname, unnamedPack);
799 return unnamedPack;
800 }
801
802 return pack;
803 }
804
805 return enterPackage(msym, flatName);
806 }
807
808 private static final Map<ModuleSymbol, ClassSymbol> EMPTY = new HashMap<>();
809
810 public void removeClass(ModuleSymbol msym, Name flatName) {
811 classes.getOrDefault(flatName, EMPTY).remove(msym);
812 }
813
814 public Iterable<ClassSymbol> getAllClasses() {
815 return () -> Iterators.createCompoundIterator(classes.values(), v -> v.values().iterator());
816 }
817
818 private void doEnterClass(ModuleSymbol msym, ClassSymbol cs) {
819 classes.computeIfAbsent(cs.flatname, n -> new HashMap<>()).put(msym, cs);
820 }
821
822 /** Create a new member or toplevel class symbol with given flat name
823 * and enter in `classes' unless already there.
824 */
825 public ClassSymbol enterClass(ModuleSymbol msym, Name flatname) {
826 Assert.checkNonNull(msym);
827 PackageSymbol ps = lookupPackage(msym, Convert.packagePart(flatname));
828 Assert.checkNonNull(ps);
829 Assert.checkNonNull(ps.modle);
830 ClassSymbol c = getClass(ps.modle, flatname);
831 if (c == null) {
832 c = defineClass(Convert.shortName(flatname), ps);
833 doEnterClass(ps.modle, c);
834 return c;
835 } else
836 return c;
837 }
838
839 /** Check to see if a package exists, given its fully qualified name.
840 */
841 public boolean packageExists(ModuleSymbol msym, Name fullname) {
842 Assert.checkNonNull(msym);
843 PackageSymbol pack = lookupPackage(msym, fullname, true);
844 return pack != null && pack.exists();
845 }
846
847 /** Make a package, given its fully qualified name.
848 */
849 public PackageSymbol enterPackage(ModuleSymbol currModule, Name fullname) {
850 Assert.checkNonNull(currModule);
851 PackageSymbol p = getPackage(currModule, fullname);
852 if (p == null) {
853 Assert.check(!fullname.isEmpty(), () -> "rootPackage missing!; currModule: " + currModule);
854 p = new PackageSymbol(
855 Convert.shortName(fullname),
856 enterPackage(currModule, Convert.packagePart(fullname)));
857 p.completer = initialCompleter;
858 p.modle = currModule;
859 doEnterPackage(currModule, p);
860 }
861 return p;
862 }
863
864 private void doEnterPackage(ModuleSymbol msym, PackageSymbol pack) {
865 packages.computeIfAbsent(pack.fullname, n -> new HashMap<>()).put(msym, pack);
866 msym.enclosedPackages = msym.enclosedPackages.prepend(pack);
867 }
868
869 private void addRootPackageFor(ModuleSymbol module) {
870 doEnterPackage(module, rootPackage);
871 PackageSymbol unnamedPackage = new PackageSymbol(names.empty, rootPackage) {
872 @Override
873 public String toString() {
874 return messages.getLocalizedString("compiler.misc.unnamed.package");
875 }
876 };
877 unnamedPackage.modle = module;
878 //we cannot use a method reference below, as initialCompleter might be null now
879 unnamedPackage.completer = s -> initialCompleter.complete(s);
880 unnamedPackage.flags_field |= EXISTS;
881 module.unnamedPackage = unnamedPackage;
882 }
883
884 public PackageSymbol getPackage(ModuleSymbol module, Name fullname) {
885 return packages.getOrDefault(fullname, Collections.emptyMap()).get(module);
886 }
887
888 public ModuleSymbol enterModule(Name name) {
889 ModuleSymbol msym = modules.get(name);
890 if (msym == null) {
891 msym = ModuleSymbol.create(name, names.module_info);
892 addRootPackageFor(msym);
893 msym.completer = s -> moduleCompleter.complete(s); //bootstrap issues
894 modules.put(name, msym);
895 }
896 return msym;
897 }
898
899 public ModuleSymbol getModule(Name name) {
900 return modules.get(name);
901 }
902
903 //temporary:
904 public ModuleSymbol inferModule(Name packageName) {
905 if (packageName.isEmpty())
906 return java_base == noModule ? noModule : unnamedModule;//!
907
908 ModuleSymbol msym = null;
909 Map<ModuleSymbol,PackageSymbol> map = packages.get(packageName);
910 if (map == null)
911 return null;
912 for (Map.Entry<ModuleSymbol,PackageSymbol> e: map.entrySet()) {
913 if (!e.getValue().members().isEmpty()) {
914 if (msym == null) {
915 msym = e.getKey();
916 } else {
917 return null;
918 }
919 }
920 }
921 return msym;
922 }
923
924 public List<ModuleSymbol> listPackageModules(Name packageName) {
925 if (packageName.isEmpty())
926 return List.nil();
927
928 List<ModuleSymbol> result = List.nil();
929 Map<ModuleSymbol,PackageSymbol> map = packages.get(packageName);
930 if (map != null) {
931 for (Map.Entry<ModuleSymbol, PackageSymbol> e: map.entrySet()) {
932 if (!e.getValue().members().isEmpty()) {
933 result = result.prepend(e.getKey());
934 }
935 }
936 }
937 return result;
938 }
939
940 public Collection<ModuleSymbol> getAllModules() {
941 return modules.values();
942 }
943
944 public Iterable<ClassSymbol> getClassesForName(Name candidate) {
945 return classes.getOrDefault(candidate, Collections.emptyMap()).values();
946 }
947
948 public Iterable<PackageSymbol> getPackagesForName(Name candidate) {
949 return packages.getOrDefault(candidate, Collections.emptyMap()).values();
950 }
951 }