1 /*
2 * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.tools.javac.code;
27
28 import java.util.Collection;
29 import java.util.Collections;
30 import java.util.EnumSet;
31 import java.util.HashMap;
32 import java.util.LinkedHashMap;
33 import java.util.Map;
34
35 import javax.lang.model.element.ElementVisitor;
36
37 import com.sun.tools.javac.code.Scope.WriteableScope;
38 import com.sun.tools.javac.code.Symbol.ClassSymbol;
39 import com.sun.tools.javac.code.Symbol.Completer;
40 import com.sun.tools.javac.code.Symbol.CompletionFailure;
41 import com.sun.tools.javac.code.Symbol.MethodSymbol;
42 import com.sun.tools.javac.code.Symbol.ModuleSymbol;
43 import com.sun.tools.javac.code.Symbol.PackageSymbol;
44 import com.sun.tools.javac.code.Symbol.TypeSymbol;
45 import com.sun.tools.javac.code.Symbol.VarSymbol;
46 import com.sun.tools.javac.code.Type.BottomType;
47 import com.sun.tools.javac.code.Type.ClassType;
48 import com.sun.tools.javac.code.Type.ErrorType;
49 import com.sun.tools.javac.code.Type.JCPrimitiveType;
50 import com.sun.tools.javac.code.Type.JCVoidType;
51 import com.sun.tools.javac.code.Type.MethodType;
52 import com.sun.tools.javac.code.Type.UnknownType;
53 import com.sun.tools.javac.comp.Modules;
54 import com.sun.tools.javac.util.Assert;
55 import com.sun.tools.javac.util.Context;
56 import com.sun.tools.javac.util.Convert;
57 import com.sun.tools.javac.util.DefinedBy;
58 import com.sun.tools.javac.util.DefinedBy.Api;
59 import com.sun.tools.javac.util.Iterators;
60 import com.sun.tools.javac.util.JavacMessages;
61 import com.sun.tools.javac.util.List;
62 import com.sun.tools.javac.util.Name;
63 import com.sun.tools.javac.util.Names;
64
65 import static com.sun.tools.javac.code.Flags.*;
66 import static com.sun.tools.javac.code.Kinds.Kind.*;
67 import static com.sun.tools.javac.code.TypeTag.*;
68
69 /** A class that defines all predefined constants and operators
70 * as well as special classes such as java.lang.Object, which need
71 * to be known to the compiler. All symbols are held in instance
72 * fields. This makes it possible to work in multiple concurrent
73 * projects, which might use different class files for library classes.
74 *
75 * <p><b>This is NOT part of any supported API.
76 * If you write code that depends on this, you do so at your own risk.
77 * This code and its internal interfaces are subject to change or
78 * deletion without notice.</b>
79 */
80 public class Symtab {
81 /** The context key for the symbol table. */
82 protected static final Context.Key<Symtab> symtabKey = new Context.Key<>();
83
84 /** Get the symbol table instance. */
85 public static Symtab instance(Context context) {
86 Symtab instance = context.get(symtabKey);
87 if (instance == null)
88 instance = new Symtab(context);
89 return instance;
90 }
91
92 /** Builtin types.
93 */
94 public final JCPrimitiveType byteType = new JCPrimitiveType(BYTE, null);
95 public final JCPrimitiveType charType = new JCPrimitiveType(CHAR, null);
96 public final JCPrimitiveType shortType = new JCPrimitiveType(SHORT, null);
97 public final JCPrimitiveType intType = new JCPrimitiveType(INT, null);
98 public final JCPrimitiveType longType = new JCPrimitiveType(LONG, null);
99 public final JCPrimitiveType floatType = new JCPrimitiveType(FLOAT, null);
100 public final JCPrimitiveType doubleType = new JCPrimitiveType(DOUBLE, null);
101 public final JCPrimitiveType booleanType = new JCPrimitiveType(BOOLEAN, null);
102 public final Type botType = new BottomType();
103 public final JCVoidType voidType = new JCVoidType();
104
105 private final Names names;
106 private final JavacMessages messages;
107 private final Completer initialCompleter;
108 private final Completer moduleCompleter;
109
110 /** A symbol for the unnamed module.
111 */
112 public final ModuleSymbol unnamedModule;
113
114 /** The error module.
115 */
116 public final ModuleSymbol errModule;
117
118 /** A symbol for no module, for use with -source 8 or less
119 */
120 public final ModuleSymbol noModule;
121
122 /** A symbol for the root package.
123 */
124 public final PackageSymbol rootPackage;
125
126 /** A symbol that stands for a missing symbol.
127 */
128 public final TypeSymbol noSymbol;
129
130 /** The error symbol.
131 */
132 public final ClassSymbol errSymbol;
133
134 /** The unknown symbol.
135 */
136 public final ClassSymbol unknownSymbol;
137
138 /** A value for the errType, with a originalType of noType */
139 public final Type errType;
140
141 /** A value for the unknown type. */
142 public final Type unknownType;
143
144 /** The builtin type of all arrays. */
145 public final ClassSymbol arrayClass;
146 public final MethodSymbol arrayCloneMethod;
147
148 /** VGJ: The (singleton) type of all bound types. */
149 public final ClassSymbol boundClass;
150
151 /** The builtin type of all methods. */
152 public final ClassSymbol methodClass;
153
154 /** A symbol for the java.base module.
155 */
156 public final ModuleSymbol java_base;
157 public final ModuleSymbol jdk_incubator_mvt;
158
159 /** Predefined types.
160 */
161 public final Type objectType;
162 public final Type valueClassType;
163 public final Type objectsType;
164 public final Type classType;
165 public final Type classLoaderType;
166 public final Type stringType;
167 public final Type stringBufferType;
168 public final Type stringBuilderType;
169 public final Type cloneableType;
170 public final Type serializableType;
171 public final Type serializedLambdaType;
172 public final Type varHandleType;
173 public final Type methodHandleType;
174 public final Type methodHandleLookupType;
175 public final Type methodTypeType;
176 public final Type nativeHeaderType;
177 public final Type throwableType;
178 public final Type errorType;
179 public final Type interruptedExceptionType;
180 public final Type illegalArgumentExceptionType;
181 public final Type exceptionType;
182 public final Type runtimeExceptionType;
183 public final Type classNotFoundExceptionType;
184 public final Type noClassDefFoundErrorType;
185 public final Type noSuchFieldErrorType;
186 public final Type assertionErrorType;
187 public final Type cloneNotSupportedExceptionType;
188 public final Type annotationType;
189 public final TypeSymbol enumSym;
190 public final Type listType;
191 public final Type collectionsType;
192 public final Type comparableType;
193 public final Type comparatorType;
194 public final Type arraysType;
195 public final Type iterableType;
196 public final Type iteratorType;
197 public final Type annotationTargetType;
198 public final Type overrideType;
199 public final Type retentionType;
200 public final Type deprecatedType;
201 public final Type suppressWarningsType;
202 public final Type supplierType;
203 public final Type inheritedType;
204 public final Type profileType;
205 public final Type proprietaryType;
206 public final Type systemType;
207 public final Type autoCloseableType;
208 public final Type trustMeType;
209 public final Type lambdaMetafactory;
210 public final Type stringConcatFactory;
211 public final Type repeatableType;
212 public final Type documentedType;
213 public final Type elementTypeType;
214 public final Type functionalInterfaceType;
215 public final Type valueCapableClass;
216
217 /** The symbol representing the length field of an array.
218 */
219 public final VarSymbol lengthVar;
220
221 /** The symbol representing the final finalize method on enums */
222 public final MethodSymbol enumFinalFinalize;
223
224 /** The symbol representing the close method on TWR AutoCloseable type */
225 public final MethodSymbol autoCloseableClose;
226
227 /** The predefined type that belongs to a tag.
228 */
229 public final Type[] typeOfTag = new Type[TypeTag.getTypeTagCount()];
230
231 /** The name of the class that belongs to a basic type tag.
232 */
233 public final Name[] boxedName = new Name[TypeTag.getTypeTagCount()];
234
235 /** A hashtable containing the encountered top-level and member classes,
236 * indexed by flat names. The table does not contain local classes.
237 * It should be updated from the outside to reflect classes defined
238 * by compiled source files.
239 */
240 private final Map<Name, Map<ModuleSymbol,ClassSymbol>> classes = new HashMap<>();
241
242 /** A hashtable containing the encountered packages.
243 * the table should be updated from outside to reflect packages defined
244 * by compiled source files.
245 */
246 private final Map<Name, Map<ModuleSymbol,PackageSymbol>> packages = new HashMap<>();
247
248 /** A hashtable giving the encountered modules.
249 */
250 private final Map<Name, ModuleSymbol> modules = new LinkedHashMap<>();
251
252 public void initType(Type type, ClassSymbol c) {
253 type.tsym = c;
254 typeOfTag[type.getTag().ordinal()] = type;
255 }
256
257 public void initType(Type type, String name) {
258 initType(
259 type,
260 new ClassSymbol(
261 PUBLIC, names.fromString(name), type, rootPackage));
262 }
263
264 public void initType(Type type, String name, String bname) {
265 initType(type, name);
266 boxedName[type.getTag().ordinal()] = names.fromString("java.lang." + bname);
267 }
268
269 /** The class symbol that owns all predefined symbols.
270 */
271 public final ClassSymbol predefClass;
272
273 /** Enter a class into symbol table.
274 * @param s The name of the class.
275 */
276 private Type enterClass(String s) {
277 return enterClass(java_base, names.fromString(s)).type;
278 }
279
280 public void synthesizeEmptyInterfaceIfMissing(final Type type) {
281 final Completer completer = type.tsym.completer;
282 type.tsym.completer = new Completer() {
283 @Override
284 public void complete(Symbol sym) throws CompletionFailure {
285 try {
286 completer.complete(sym);
287 } catch (CompletionFailure e) {
288 sym.flags_field |= (PUBLIC | INTERFACE);
289 ((ClassType) sym.type).supertype_field = objectType;
290 }
291 }
292
293 @Override
294 public boolean isTerminal() {
295 return completer.isTerminal();
296 }
297 };
298 }
299
300 public void synthesizeDeriveValueTypeIfMissing(final Type type) {
301 final Completer completer = type.tsym.completer;
302 type.tsym.completer = new Completer() {
303 public void complete(Symbol sym) throws CompletionFailure {
304 try {
305 completer.complete(sym);
306 } catch (CompletionFailure e) {
307 ClassType ctype = (ClassType) type;
308 sym.flags_field = PUBLIC|ACYCLIC|ANNOTATION|INTERFACE;
309 sym.erasure_field = ctype;
310 ((ClassSymbol) sym).members_field = WriteableScope.create(sym);
311 ctype.typarams_field = List.nil();
312 ctype.allparams_field = List.nil();
313 ctype.supertype_field = annotationType;
314 ctype.interfaces_field = List.nil();
315 }
316 }
317
318 @Override
319 public boolean isTerminal() {
320 return completer.isTerminal();
321 }
322 };
323 }
324
325 public void synthesizeJavaLangValueClassIfMissing(final Type type) {
326 final Completer completer = type.tsym.completer;
327 type.tsym.completer = new Completer() {
328 public void complete(Symbol sym) throws CompletionFailure {
329 try {
330 completer.complete(sym);
331 } catch (CompletionFailure e) {
332 sym.flags_field |= (PUBLIC | VALUE);
333 ((ClassType) sym.type).supertype_field = Type.noType;
334 ((ClassSymbol) sym).members_field = WriteableScope.create(sym);
335 sym.members().enter(new MethodSymbol(PUBLIC, names.init,
336 new MethodType(List.<Type>nil(), voidType, List.<Type>nil(), methodClass), sym));
337 sym.members().enter(new MethodSymbol(PUBLIC, names.hashCode,
338 new MethodType(List.<Type>nil(), intType, List.<Type>nil(), methodClass), sym));
339 sym.members().enter(new MethodSymbol(PUBLIC, names.toString,
340 new MethodType(List.<Type>nil(), stringType, List.<Type>nil(), methodClass), sym));
341 sym.members().enter(new MethodSymbol(PUBLIC, names.equals,
342 new MethodType(List.<Type>of(objectType), booleanType, List.<Type>nil(), methodClass), sym));
343 }
344 }
345
346 @Override
347 public boolean isTerminal() {
348 return completer.isTerminal();
349 }
350 };
351 }
352
353
354 public void synthesizeBoxTypeIfMissing(final Type type) {
355 ClassSymbol sym = enterClass(java_base, boxedName[type.getTag().ordinal()]);
356 final Completer completer = sym.completer;
357 sym.completer = new Completer() {
358 @Override
359 public void complete(Symbol sym) throws CompletionFailure {
360 try {
361 completer.complete(sym);
362 } catch (CompletionFailure e) {
363 sym.flags_field |= PUBLIC;
364 ((ClassType) sym.type).supertype_field = objectType;
365 MethodSymbol boxMethod =
366 new MethodSymbol(PUBLIC | STATIC, names.valueOf,
367 new MethodType(List.of(type), sym.type,
368 List.nil(), methodClass),
369 sym);
370 sym.members().enter(boxMethod);
371 MethodSymbol unboxMethod =
372 new MethodSymbol(PUBLIC,
373 type.tsym.name.append(names.Value), // x.intValue()
374 new MethodType(List.nil(), type,
375 List.nil(), methodClass),
376 sym);
377 sym.members().enter(unboxMethod);
378 }
379 }
380
381 @Override
382 public boolean isTerminal() {
383 return completer.isTerminal();
384 }
385 };
386 }
387
388 // Enter a synthetic class that is used to mark classes in ct.sym.
389 // This class does not have a class file.
390 private Type enterSyntheticAnnotation(String name) {
391 // for now, leave the module null, to prevent problems from synthesizing the
392 // existence of a class in any specific module, including noModule
393 ClassType type = (ClassType)enterClass(java_base, names.fromString(name)).type;
394 ClassSymbol sym = (ClassSymbol)type.tsym;
395 sym.completer = Completer.NULL_COMPLETER;
396 sym.flags_field = PUBLIC|ACYCLIC|ANNOTATION|INTERFACE;
397 sym.erasure_field = type;
398 sym.members_field = WriteableScope.create(sym);
399 type.typarams_field = List.nil();
400 type.allparams_field = List.nil();
401 type.supertype_field = annotationType;
402 type.interfaces_field = List.nil();
403 return type;
404 }
405
406 /** Constructor; enters all predefined identifiers and operators
407 * into symbol table.
408 */
409 protected Symtab(Context context) throws CompletionFailure {
410 context.put(symtabKey, this);
411
412 names = Names.instance(context);
413
414 // Create the unknown type
415 unknownType = new UnknownType();
416
417 messages = JavacMessages.instance(context);
418
419 rootPackage = new PackageSymbol(names.empty, null);
420
421 // create the basic builtin symbols
422 unnamedModule = new ModuleSymbol(names.empty, null) {
423 {
424 directives = List.nil();
425 exports = List.nil();
426 provides = List.nil();
427 uses = List.nil();
428 ModuleSymbol java_base = enterModule(names.java_base);
429 com.sun.tools.javac.code.Directive.RequiresDirective d =
430 new com.sun.tools.javac.code.Directive.RequiresDirective(java_base,
431 EnumSet.of(com.sun.tools.javac.code.Directive.RequiresFlag.MANDATED));
432 requires = List.of(d);
433 }
434 @Override
435 public String toString() {
436 return messages.getLocalizedString("compiler.misc.unnamed.module");
437 }
438 };
439 addRootPackageFor(unnamedModule);
440 unnamedModule.enclosedPackages = unnamedModule.enclosedPackages.prepend(unnamedModule.unnamedPackage);
441
442 errModule = new ModuleSymbol(names.empty, null) {
443 {
444 directives = List.nil();
445 exports = List.nil();
446 provides = List.nil();
447 uses = List.nil();
448 ModuleSymbol java_base = enterModule(names.java_base);
449 com.sun.tools.javac.code.Directive.RequiresDirective d =
450 new com.sun.tools.javac.code.Directive.RequiresDirective(java_base,
451 EnumSet.of(com.sun.tools.javac.code.Directive.RequiresFlag.MANDATED));
452 requires = List.of(d);
453 }
454 };
455 addRootPackageFor(errModule);
456
457 noModule = new ModuleSymbol(names.empty, null) {
458 @Override public boolean isNoModule() {
459 return true;
460 }
461 };
462 addRootPackageFor(noModule);
463
464 noSymbol = new TypeSymbol(NIL, 0, names.empty, Type.noType, rootPackage) {
465 @Override @DefinedBy(Api.LANGUAGE_MODEL)
466 public <R, P> R accept(ElementVisitor<R, P> v, P p) {
467 return v.visitUnknown(this, p);
468 }
469 };
470
471 // create the error symbols
472 errSymbol = new ClassSymbol(PUBLIC|STATIC|ACYCLIC, names.any, null, rootPackage);
473 errType = new ErrorType(errSymbol, Type.noType);
474
475 unknownSymbol = new ClassSymbol(PUBLIC|STATIC|ACYCLIC, names.fromString("<any?>"), null, rootPackage);
476 unknownSymbol.members_field = new Scope.ErrorScope(unknownSymbol);
477 unknownSymbol.type = unknownType;
478
479 // initialize builtin types
480 initType(byteType, "byte", "Byte");
481 initType(shortType, "short", "Short");
482 initType(charType, "char", "Character");
483 initType(intType, "int", "Integer");
484 initType(longType, "long", "Long");
485 initType(floatType, "float", "Float");
486 initType(doubleType, "double", "Double");
487 initType(booleanType, "boolean", "Boolean");
488 initType(voidType, "void", "Void");
489 initType(botType, "<nulltype>");
490 initType(errType, errSymbol);
491 initType(unknownType, unknownSymbol);
492
493 // the builtin class of all arrays
494 arrayClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Array, noSymbol);
495
496 // VGJ
497 boundClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Bound, noSymbol);
498 boundClass.members_field = new Scope.ErrorScope(boundClass);
499
500 // the builtin class of all methods
501 methodClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Method, noSymbol);
502 methodClass.members_field = new Scope.ErrorScope(boundClass);
503
504 // Create class to hold all predefined constants and operations.
505 predefClass = new ClassSymbol(PUBLIC|ACYCLIC, names.empty, rootPackage);
506 WriteableScope scope = WriteableScope.create(predefClass);
507 predefClass.members_field = scope;
508
509 // Get the initial completer for Symbols from the ClassFinder
510 initialCompleter = ClassFinder.instance(context).getCompleter();
511 rootPackage.members_field = WriteableScope.create(rootPackage);
512
513 // Enter symbols for basic types.
514 scope.enter(byteType.tsym);
515 scope.enter(shortType.tsym);
516 scope.enter(charType.tsym);
517 scope.enter(intType.tsym);
518 scope.enter(longType.tsym);
519 scope.enter(floatType.tsym);
520 scope.enter(doubleType.tsym);
521 scope.enter(booleanType.tsym);
522 scope.enter(errType.tsym);
523
524 // Enter symbol for the errSymbol
525 scope.enter(errSymbol);
526
527 Source source = Source.instance(context);
528 if (source.allowModules()) {
529 java_base = enterModule(names.java_base);
530 //avoid completing java.base during the Symtab initialization
531 java_base.completer = Completer.NULL_COMPLETER;
532 java_base.visiblePackages = Collections.emptyMap();
533
534 jdk_incubator_mvt = enterModule(names.fromString("jdk.incubator.mvt"));
535 jdk_incubator_mvt.completer = Completer.NULL_COMPLETER;
536 jdk_incubator_mvt.visiblePackages = Collections.emptyMap();
537 } else {
538 java_base = noModule;
539 jdk_incubator_mvt = noModule;
540 }
541
542 // Get the initial completer for ModuleSymbols from Modules
543 moduleCompleter = Modules.instance(context).getCompleter();
544
545 // Enter predefined classes. All are assumed to be in the java.base module.
546 objectType = enterClass("java.lang.Object");
547 objectsType = enterClass("java.util.Objects");
548 valueClassType = enterClass("java.lang.__Value");
549 classType = enterClass("java.lang.Class");
550 stringType = enterClass("java.lang.String");
551 stringBufferType = enterClass("java.lang.StringBuffer");
552 stringBuilderType = enterClass("java.lang.StringBuilder");
553 cloneableType = enterClass("java.lang.Cloneable");
554 throwableType = enterClass("java.lang.Throwable");
555 serializableType = enterClass("java.io.Serializable");
556 serializedLambdaType = enterClass("java.lang.invoke.SerializedLambda");
557 varHandleType = enterClass("java.lang.invoke.VarHandle");
558 methodHandleType = enterClass("java.lang.invoke.MethodHandle");
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 cloneNotSupportedExceptionType = enterClass("java.lang.CloneNotSupportedException");
571 annotationType = enterClass("java.lang.annotation.Annotation");
572 classLoaderType = enterClass("java.lang.ClassLoader");
573 enumSym = enterClass(java_base, names.java_lang_Enum);
574 enumFinalFinalize =
575 new MethodSymbol(PROTECTED|FINAL|HYPOTHETICAL,
576 names.finalize,
577 new MethodType(List.nil(), voidType,
578 List.nil(), methodClass),
579 enumSym);
580 listType = enterClass("java.util.List");
581 collectionsType = enterClass("java.util.Collections");
582 comparableType = enterClass("java.lang.Comparable");
583 comparatorType = enterClass("java.util.Comparator");
584 arraysType = enterClass("java.util.Arrays");
585 iterableType = enterClass("java.lang.Iterable");
586 iteratorType = enterClass("java.util.Iterator");
587 annotationTargetType = enterClass("java.lang.annotation.Target");
588 overrideType = enterClass("java.lang.Override");
589 retentionType = enterClass("java.lang.annotation.Retention");
590 deprecatedType = enterClass("java.lang.Deprecated");
591 suppressWarningsType = enterClass("java.lang.SuppressWarnings");
592 supplierType = enterClass("java.util.function.Supplier");
593 inheritedType = enterClass("java.lang.annotation.Inherited");
594 repeatableType = enterClass("java.lang.annotation.Repeatable");
595 documentedType = enterClass("java.lang.annotation.Documented");
596 elementTypeType = enterClass("java.lang.annotation.ElementType");
597 systemType = enterClass("java.lang.System");
598 autoCloseableType = enterClass("java.lang.AutoCloseable");
599 autoCloseableClose = new MethodSymbol(PUBLIC,
600 names.close,
601 new MethodType(List.nil(), voidType,
602 List.of(exceptionType), methodClass),
603 autoCloseableType.tsym);
604 trustMeType = enterClass("java.lang.SafeVarargs");
605 nativeHeaderType = enterClass("java.lang.annotation.Native");
606 lambdaMetafactory = enterClass("java.lang.invoke.LambdaMetafactory");
607 stringConcatFactory = enterClass("java.lang.invoke.StringConcatFactory");
608 functionalInterfaceType = enterClass("java.lang.FunctionalInterface");
609
610 Name vccName = names.fromString("jdk.incubator.mvt.ValueCapableClass");
611 valueCapableClass = enterClass(jdk_incubator_mvt, vccName).type;
612
613 synthesizeEmptyInterfaceIfMissing(autoCloseableType);
614 synthesizeEmptyInterfaceIfMissing(cloneableType);
615 synthesizeEmptyInterfaceIfMissing(serializableType);
616 synthesizeEmptyInterfaceIfMissing(lambdaMetafactory);
617 synthesizeEmptyInterfaceIfMissing(serializedLambdaType);
618 synthesizeEmptyInterfaceIfMissing(stringConcatFactory);
619 synthesizeBoxTypeIfMissing(doubleType);
620 synthesizeBoxTypeIfMissing(floatType);
621 synthesizeBoxTypeIfMissing(voidType);
622 synthesizeJavaLangValueClassIfMissing(valueClassType);
623 synthesizeDeriveValueTypeIfMissing(valueCapableClass);
624
625 // Enter a synthetic class that is used to mark internal
626 // proprietary classes in ct.sym. This class does not have a
627 // class file.
628 proprietaryType = enterSyntheticAnnotation("sun.Proprietary+Annotation");
629
630 // Enter a synthetic class that is used to provide profile info for
631 // classes in ct.sym. This class does not have a class file.
632 profileType = enterSyntheticAnnotation("jdk.Profile+Annotation");
633 MethodSymbol m = new MethodSymbol(PUBLIC | ABSTRACT, names.value, intType, profileType.tsym);
634 profileType.tsym.members().enter(m);
635
636 // Enter a class for arrays.
637 // The class implements java.lang.Cloneable and java.io.Serializable.
638 // It has a final length field and a clone method.
639 ClassType arrayClassType = (ClassType)arrayClass.type;
640 arrayClassType.supertype_field = objectType;
641 arrayClassType.interfaces_field = List.of(cloneableType, serializableType);
642 arrayClass.members_field = WriteableScope.create(arrayClass);
643 lengthVar = new VarSymbol(
644 PUBLIC | FINAL,
645 names.length,
646 intType,
647 arrayClass);
648 arrayClass.members().enter(lengthVar);
649 arrayCloneMethod = new MethodSymbol(
650 PUBLIC,
651 names.clone,
652 new MethodType(List.nil(), objectType,
653 List.nil(), methodClass),
654 arrayClass);
655 arrayClass.members().enter(arrayCloneMethod);
656
657 if (java_base != noModule) {
658 java_base.completer = moduleCompleter::complete; //bootstrap issues
659 jdk_incubator_mvt.completer = moduleCompleter::complete; //bootstrap issues
660 }
661
662 }
663
664 /** Define a new class given its name and owner.
665 */
666 public ClassSymbol defineClass(Name name, Symbol owner) {
667 ClassSymbol c = new ClassSymbol(0, name, owner);
668 c.completer = initialCompleter;
669 return c;
670 }
671
672 /** Create a new toplevel or member class symbol with given name
673 * and owner and enter in `classes' unless already there.
674 */
675 public ClassSymbol enterClass(ModuleSymbol msym, Name name, TypeSymbol owner) {
676 Assert.checkNonNull(msym);
677 Name flatname = TypeSymbol.formFlatName(name, owner);
678 ClassSymbol c = getClass(msym, flatname);
679 if (c == null) {
680 c = defineClass(name, owner);
681 doEnterClass(msym, c);
682 } else if ((c.name != name || c.owner != owner) && owner.kind == TYP && c.owner.kind == PCK) {
683 // reassign fields of classes that might have been loaded with
684 // their flat names.
685 c.owner.members().remove(c);
686 c.name = name;
687 c.owner = owner;
688 c.fullname = ClassSymbol.formFullName(name, owner);
689 }
690 return c;
691 }
692
693 public ClassSymbol getClass(ModuleSymbol msym, Name flatName) {
694 Assert.checkNonNull(msym, flatName::toString);
695 return classes.getOrDefault(flatName, Collections.emptyMap()).get(msym);
696 }
697
698 public PackageSymbol lookupPackage(ModuleSymbol msym, Name flatName) {
699 Assert.checkNonNull(msym);
700
701 if (flatName.isEmpty()) {
702 //unnamed packages only from the current module - visiblePackages contains *root* package, not unnamed package!
703 return msym.unnamedPackage;
704 }
705
706 if (msym == noModule) {
707 return enterPackage(msym, flatName);
708 }
709
710 msym.complete();
711
712 PackageSymbol pack;
713
714 pack = msym.visiblePackages.get(flatName);
715
716 if (pack != null)
717 return pack;
718
719 pack = getPackage(msym, flatName);
720
721 if (pack != null && pack.exists())
722 return pack;
723
724 boolean dependsOnUnnamed = msym.requires != null &&
725 msym.requires.stream()
726 .map(rd -> rd.module)
727 .anyMatch(mod -> mod == unnamedModule);
728
729 if (dependsOnUnnamed) {
730 //msyms depends on the unnamed module, for which we generally don't know
731 //the list of packages it "exports" ahead of time. So try to lookup the package in the
732 //current module, and in the unnamed module and see if it exists in one of them
733 PackageSymbol unnamedPack = getPackage(unnamedModule, flatName);
734
735 if (unnamedPack != null && unnamedPack.exists()) {
736 msym.visiblePackages.put(unnamedPack.fullname, unnamedPack);
737 return unnamedPack;
738 }
739
740 pack = enterPackage(msym, flatName);
741 pack.complete();
742 if (pack.exists())
743 return pack;
744
745 unnamedPack = enterPackage(unnamedModule, flatName);
746 unnamedPack.complete();
747 if (unnamedPack.exists()) {
748 msym.visiblePackages.put(unnamedPack.fullname, unnamedPack);
749 return unnamedPack;
750 }
751
752 return pack;
753 }
754
755 return enterPackage(msym, flatName);
756 }
757
758 private static final Map<ModuleSymbol, ClassSymbol> EMPTY = new HashMap<>();
759
760 public void removeClass(ModuleSymbol msym, Name flatName) {
761 classes.getOrDefault(flatName, EMPTY).remove(msym);
762 }
763
764 public Iterable<ClassSymbol> getAllClasses() {
765 return () -> Iterators.createCompoundIterator(classes.values(), v -> v.values().iterator());
766 }
767
768 private void doEnterClass(ModuleSymbol msym, ClassSymbol cs) {
769 classes.computeIfAbsent(cs.flatname, n -> new HashMap<>()).put(msym, cs);
770 }
771
772 /** Create a new member or toplevel class symbol with given flat name
773 * and enter in `classes' unless already there.
774 */
775 public ClassSymbol enterClass(ModuleSymbol msym, Name flatname) {
776 Assert.checkNonNull(msym);
777 PackageSymbol ps = lookupPackage(msym, Convert.packagePart(flatname));
778 Assert.checkNonNull(ps);
779 Assert.checkNonNull(ps.modle);
780 ClassSymbol c = getClass(ps.modle, flatname);
781 if (c == null) {
782 c = defineClass(Convert.shortName(flatname), ps);
783 doEnterClass(ps.modle, c);
784 return c;
785 } else
786 return c;
787 }
788
789 /** Check to see if a package exists, given its fully qualified name.
790 */
791 public boolean packageExists(ModuleSymbol msym, Name fullname) {
792 Assert.checkNonNull(msym);
793 return lookupPackage(msym, fullname).exists();
794 }
795
796 /** Make a package, given its fully qualified name.
797 */
798 public PackageSymbol enterPackage(ModuleSymbol currModule, Name fullname) {
799 Assert.checkNonNull(currModule);
800 PackageSymbol p = getPackage(currModule, fullname);
801 if (p == null) {
802 Assert.check(!fullname.isEmpty(), () -> "rootPackage missing!; currModule: " + currModule);
803 p = new PackageSymbol(
804 Convert.shortName(fullname),
805 enterPackage(currModule, Convert.packagePart(fullname)));
806 p.completer = initialCompleter;
807 p.modle = currModule;
808 doEnterPackage(currModule, p);
809 }
810 return p;
811 }
812
813 private void doEnterPackage(ModuleSymbol msym, PackageSymbol pack) {
814 packages.computeIfAbsent(pack.fullname, n -> new HashMap<>()).put(msym, pack);
815 msym.enclosedPackages = msym.enclosedPackages.prepend(pack);
816 }
817
818 private void addRootPackageFor(ModuleSymbol module) {
819 doEnterPackage(module, rootPackage);
820 PackageSymbol unnamedPackage = new PackageSymbol(names.empty, rootPackage) {
821 @Override
822 public String toString() {
823 return messages.getLocalizedString("compiler.misc.unnamed.package");
824 }
825 };
826 unnamedPackage.modle = module;
827 //we cannot use a method reference below, as initialCompleter might be null now
828 unnamedPackage.completer = s -> initialCompleter.complete(s);
829 module.unnamedPackage = unnamedPackage;
830 }
831
832 public PackageSymbol getPackage(ModuleSymbol module, Name fullname) {
833 return packages.getOrDefault(fullname, Collections.emptyMap()).get(module);
834 }
835
836 public ModuleSymbol enterModule(Name name) {
837 ModuleSymbol msym = modules.get(name);
838 if (msym == null) {
839 msym = ModuleSymbol.create(name, names.module_info);
840 addRootPackageFor(msym);
841 msym.completer = s -> moduleCompleter.complete(s); //bootstrap issues
842 modules.put(name, msym);
843 }
844 return msym;
845 }
846
847 public ModuleSymbol getModule(Name name) {
848 return modules.get(name);
849 }
850
851 //temporary:
852 public ModuleSymbol inferModule(Name packageName) {
853 if (packageName.isEmpty())
854 return java_base == noModule ? noModule : unnamedModule;//!
855
856 ModuleSymbol msym = null;
857 Map<ModuleSymbol,PackageSymbol> map = packages.get(packageName);
858 if (map == null)
859 return null;
860 for (Map.Entry<ModuleSymbol,PackageSymbol> e: map.entrySet()) {
861 if (!e.getValue().members().isEmpty()) {
862 if (msym == null) {
863 msym = e.getKey();
864 } else {
865 return null;
866 }
867 }
868 }
869 return msym;
870 }
871
872 public List<ModuleSymbol> listPackageModules(Name packageName) {
873 if (packageName.isEmpty())
874 return List.nil();
875
876 List<ModuleSymbol> result = List.nil();
877 Map<ModuleSymbol,PackageSymbol> map = packages.get(packageName);
878 if (map != null) {
879 for (Map.Entry<ModuleSymbol, PackageSymbol> e: map.entrySet()) {
880 if (!e.getValue().members().isEmpty()) {
881 result = result.prepend(e.getKey());
882 }
883 }
884 }
885 return result;
886 }
887
888 public Collection<ModuleSymbol> getAllModules() {
889 return modules.values();
890 }
891
892 public Iterable<ClassSymbol> getClassesForName(Name candidate) {
893 return classes.getOrDefault(candidate, Collections.emptyMap()).values();
894 }
895
896 public Iterable<PackageSymbol> getPackagesForName(Name candidate) {
897 return packages.getOrDefault(candidate, Collections.emptyMap()).values();
898 }
899 }