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src/jdk.compiler/share/classes/com/sun/tools/javac/code/Symtab.java

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  1 /*
  2  * Copyright (c) 1999, 2025, Oracle and/or its affiliates. All rights reserved.
  3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  4  *
  5  * This code is free software; you can redistribute it and/or modify it
  6  * under the terms of the GNU General Public License version 2 only, as
  7  * published by the Free Software Foundation.  Oracle designates this
  8  * particular file as subject to the "Classpath" exception as provided
  9  * by Oracle in the LICENSE file that accompanied this code.
 10  *
 11  * This code is distributed in the hope that it will be useful, but WITHOUT
 12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 14  * version 2 for more details (a copy is included in the LICENSE file that
 15  * accompanied this code).
 16  *
 17  * You should have received a copy of the GNU General Public License version
 18  * 2 along with this work; if not, write to the Free Software Foundation,
 19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 20  *
 21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 22  * or visit www.oracle.com if you need additional information or have any

209     public final Type inheritedType;
210     public final Type profileType;
211     public final Type proprietaryType;
212     public final Type systemType;
213     public final Type autoCloseableType;
214     public final Type trustMeType;
215     public final Type lambdaMetafactory;
216     public final Type stringConcatFactory;
217     public final Type repeatableType;
218     public final Type documentedType;
219     public final Type elementTypeType;
220     public final Type functionalInterfaceType;
221     public final Type previewFeatureType;
222     public final Type previewFeatureInternalType;
223     public final Type restrictedType;
224     public final Type restrictedInternalType;
225     public final Type typeDescriptorType;
226     public final Type recordType;
227     public final Type switchBootstrapsType;
228     public final Type constantBootstrapsType;
229     public final Type valueBasedType;
230     public final Type valueBasedInternalType;
231     public final Type requiresIdentityType;
232     public final Type requiresIdentityInternalType;
233     public final Type classDescType;
234     public final Type enumDescType;
235 
236     // For serialization lint checking
237     public final Type objectStreamFieldType;
238     public final Type objectInputStreamType;
239     public final Type objectOutputStreamType;
240     public final Type ioExceptionType;
241     public final Type objectStreamExceptionType;
242     // For externalization lint checking
243     public final Type externalizableType;
244     public final Type objectInputType;
245     public final Type objectOutputType;
246 







247     /** The symbol representing the length field of an array.
248      */
249     public final VarSymbol lengthVar;
250 
251     /** The symbol representing the final finalize method on enums */
252     public final MethodSymbol enumFinalFinalize;
253 
254     /** The symbol representing the close method on TWR AutoCloseable type */
255     public final MethodSymbol autoCloseableClose;
256 
257     /** The predefined type that belongs to a tag.
258      */
259     public final Type[] typeOfTag = new Type[TypeTag.getTypeTagCount()];
260 
261     /** The name of the class that belongs to a basic type tag.
262      */
263     public final Name[] boxedName = new Name[TypeTag.getTypeTagCount()];
264 
265     /** A hashtable containing the encountered top-level and member classes,
266      *  indexed by flat names. The table does not contain local classes.

525 
526         // Enter symbols for basic types.
527         scope.enter(byteType.tsym);
528         scope.enter(shortType.tsym);
529         scope.enter(charType.tsym);
530         scope.enter(intType.tsym);
531         scope.enter(longType.tsym);
532         scope.enter(floatType.tsym);
533         scope.enter(doubleType.tsym);
534         scope.enter(booleanType.tsym);
535         scope.enter(errType.tsym);
536 
537         // Enter symbol for the errSymbol
538         scope.enter(errSymbol);
539 
540         // Get the initial completer for ModuleSymbols from Modules
541         moduleCompleter = Modules.instance(context).getCompleter();
542 
543         // Enter predefined classes. All are assumed to be in the java.base module.
544         objectType = enterClass("java.lang.Object");






545         objectMethodsType = enterClass("java.lang.runtime.ObjectMethods");
546         exactConversionsSupportType = enterClass("java.lang.runtime.ExactConversionsSupport");
547         objectsType = enterClass("java.util.Objects");
548         classType = enterClass("java.lang.Class");
549         stringType = enterClass("java.lang.String");
550         stringBufferType = enterClass("java.lang.StringBuffer");
551         stringBuilderType = enterClass("java.lang.StringBuilder");
552         cloneableType = enterClass("java.lang.Cloneable");
553         throwableType = enterClass("java.lang.Throwable");
554         serializableType = enterClass("java.io.Serializable");
555         serializedLambdaType = enterClass("java.lang.invoke.SerializedLambda");
556         varHandleType = enterClass("java.lang.invoke.VarHandle");
557         methodHandleType = enterClass("java.lang.invoke.MethodHandle");
558         methodHandlesType = enterClass("java.lang.invoke.MethodHandles");
559         methodHandleLookupType = enterClass("java.lang.invoke.MethodHandles$Lookup");
560         methodTypeType = enterClass("java.lang.invoke.MethodType");
561         errorType = enterClass("java.lang.Error");
562         illegalArgumentExceptionType = enterClass("java.lang.IllegalArgumentException");
563         interruptedExceptionType = enterClass("java.lang.InterruptedException");
564         exceptionType = enterClass("java.lang.Exception");
565         runtimeExceptionType = enterClass("java.lang.RuntimeException");
566         classNotFoundExceptionType = enterClass("java.lang.ClassNotFoundException");
567         noClassDefFoundErrorType = enterClass("java.lang.NoClassDefFoundError");
568         noSuchFieldErrorType = enterClass("java.lang.NoSuchFieldError");
569         assertionErrorType = enterClass("java.lang.AssertionError");
570         incompatibleClassChangeErrorType = enterClass("java.lang.IncompatibleClassChangeError");
571         cloneNotSupportedExceptionType = enterClass("java.lang.CloneNotSupportedException");
572         matchExceptionType = enterClass("java.lang.MatchException");
573         annotationType = enterClass("java.lang.annotation.Annotation");

624         enumDescType = enterClass("java.lang.Enum$EnumDesc");
625         // For serialization lint checking
626         objectStreamFieldType = enterClass("java.io.ObjectStreamField");
627         objectInputStreamType = enterClass("java.io.ObjectInputStream");
628         objectOutputStreamType = enterClass("java.io.ObjectOutputStream");
629         ioExceptionType = enterClass("java.io.IOException");
630         objectStreamExceptionType = enterClass("java.io.ObjectStreamException");
631         externalizableType = enterClass("java.io.Externalizable");
632         objectInputType  = enterClass("java.io.ObjectInput");
633         objectOutputType = enterClass("java.io.ObjectOutput");
634         synthesizeEmptyInterfaceIfMissing(autoCloseableType);
635         synthesizeEmptyInterfaceIfMissing(cloneableType);
636         synthesizeEmptyInterfaceIfMissing(serializableType);
637         synthesizeEmptyInterfaceIfMissing(lambdaMetafactory);
638         synthesizeEmptyInterfaceIfMissing(serializedLambdaType);
639         synthesizeEmptyInterfaceIfMissing(stringConcatFactory);
640         synthesizeBoxTypeIfMissing(doubleType);
641         synthesizeBoxTypeIfMissing(floatType);
642         synthesizeBoxTypeIfMissing(voidType);
643 


644         // Enter a synthetic class that is used to mark internal
645         // proprietary classes in ct.sym.  This class does not have a
646         // class file.
647         proprietaryType = enterSyntheticAnnotation("sun.Proprietary+Annotation");
648 
649         // Enter a synthetic class that is used to provide profile info for
650         // classes in ct.sym.  This class does not have a class file.
651         profileType = enterSyntheticAnnotation("jdk.Profile+Annotation");
652         MethodSymbol m = new MethodSymbol(PUBLIC | ABSTRACT, names.value, intType, profileType.tsym);
653         profileType.tsym.members().enter(m);
654 
655         // Enter a class for arrays.
656         // The class implements java.lang.Cloneable and java.io.Serializable.
657         // It has a final length field and a clone method.
658         ClassType arrayClassType = (ClassType)arrayClass.type;
659         arrayClassType.supertype_field = objectType;
660         arrayClassType.interfaces_field = List.of(cloneableType, serializableType);
661         arrayClass.members_field = WriteableScope.create(arrayClass);
662         lengthVar = new VarSymbol(
663             PUBLIC | FINAL,

  1 /*
  2  * Copyright (c) 1999, 2026, 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

209     public final Type inheritedType;
210     public final Type profileType;
211     public final Type proprietaryType;
212     public final Type systemType;
213     public final Type autoCloseableType;
214     public final Type trustMeType;
215     public final Type lambdaMetafactory;
216     public final Type stringConcatFactory;
217     public final Type repeatableType;
218     public final Type documentedType;
219     public final Type elementTypeType;
220     public final Type functionalInterfaceType;
221     public final Type previewFeatureType;
222     public final Type previewFeatureInternalType;
223     public final Type restrictedType;
224     public final Type restrictedInternalType;
225     public final Type typeDescriptorType;
226     public final Type recordType;
227     public final Type switchBootstrapsType;
228     public final Type constantBootstrapsType;


229     public final Type requiresIdentityType;
230     public final Type requiresIdentityInternalType;
231     public final Type classDescType;
232     public final Type enumDescType;
233 
234     // For serialization lint checking
235     public final Type objectStreamFieldType;
236     public final Type objectInputStreamType;
237     public final Type objectOutputStreamType;
238     public final Type ioExceptionType;
239     public final Type objectStreamExceptionType;
240     // For externalization lint checking
241     public final Type externalizableType;
242     public final Type objectInputType;
243     public final Type objectOutputType;
244 
245     // valhalla
246     public final Type valueBasedType;
247     public final Type valueBasedInternalType;
248     /** The symbol representing the finalize method on Object */
249     public final MethodSymbol objectFinalize;
250     public final Type numberType;
251 
252     /** The symbol representing the length field of an array.
253      */
254     public final VarSymbol lengthVar;
255 
256     /** The symbol representing the final finalize method on enums */
257     public final MethodSymbol enumFinalFinalize;
258 
259     /** The symbol representing the close method on TWR AutoCloseable type */
260     public final MethodSymbol autoCloseableClose;
261 
262     /** The predefined type that belongs to a tag.
263      */
264     public final Type[] typeOfTag = new Type[TypeTag.getTypeTagCount()];
265 
266     /** The name of the class that belongs to a basic type tag.
267      */
268     public final Name[] boxedName = new Name[TypeTag.getTypeTagCount()];
269 
270     /** A hashtable containing the encountered top-level and member classes,
271      *  indexed by flat names. The table does not contain local classes.

530 
531         // Enter symbols for basic types.
532         scope.enter(byteType.tsym);
533         scope.enter(shortType.tsym);
534         scope.enter(charType.tsym);
535         scope.enter(intType.tsym);
536         scope.enter(longType.tsym);
537         scope.enter(floatType.tsym);
538         scope.enter(doubleType.tsym);
539         scope.enter(booleanType.tsym);
540         scope.enter(errType.tsym);
541 
542         // Enter symbol for the errSymbol
543         scope.enter(errSymbol);
544 
545         // Get the initial completer for ModuleSymbols from Modules
546         moduleCompleter = Modules.instance(context).getCompleter();
547 
548         // Enter predefined classes. All are assumed to be in the java.base module.
549         objectType = enterClass("java.lang.Object");
550         throwableType = enterClass("java.lang.Throwable");
551         objectFinalize = new MethodSymbol(PROTECTED,
552                 names.finalize,
553                 new MethodType(List.nil(), voidType,
554                         List.of(throwableType), methodClass),
555                 objectType.tsym);
556         objectMethodsType = enterClass("java.lang.runtime.ObjectMethods");
557         exactConversionsSupportType = enterClass("java.lang.runtime.ExactConversionsSupport");
558         objectsType = enterClass("java.util.Objects");
559         classType = enterClass("java.lang.Class");
560         stringType = enterClass("java.lang.String");
561         stringBufferType = enterClass("java.lang.StringBuffer");
562         stringBuilderType = enterClass("java.lang.StringBuilder");
563         cloneableType = enterClass("java.lang.Cloneable");

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");

634         enumDescType = enterClass("java.lang.Enum$EnumDesc");
635         // For serialization lint checking
636         objectStreamFieldType = enterClass("java.io.ObjectStreamField");
637         objectInputStreamType = enterClass("java.io.ObjectInputStream");
638         objectOutputStreamType = enterClass("java.io.ObjectOutputStream");
639         ioExceptionType = enterClass("java.io.IOException");
640         objectStreamExceptionType = enterClass("java.io.ObjectStreamException");
641         externalizableType = enterClass("java.io.Externalizable");
642         objectInputType  = enterClass("java.io.ObjectInput");
643         objectOutputType = enterClass("java.io.ObjectOutput");
644         synthesizeEmptyInterfaceIfMissing(autoCloseableType);
645         synthesizeEmptyInterfaceIfMissing(cloneableType);
646         synthesizeEmptyInterfaceIfMissing(serializableType);
647         synthesizeEmptyInterfaceIfMissing(lambdaMetafactory);
648         synthesizeEmptyInterfaceIfMissing(serializedLambdaType);
649         synthesizeEmptyInterfaceIfMissing(stringConcatFactory);
650         synthesizeBoxTypeIfMissing(doubleType);
651         synthesizeBoxTypeIfMissing(floatType);
652         synthesizeBoxTypeIfMissing(voidType);
653 
654         numberType = enterClass("java.lang.Number");
655 
656         // Enter a synthetic class that is used to mark internal
657         // proprietary classes in ct.sym.  This class does not have a
658         // class file.
659         proprietaryType = enterSyntheticAnnotation("sun.Proprietary+Annotation");
660 
661         // Enter a synthetic class that is used to provide profile info for
662         // classes in ct.sym.  This class does not have a class file.
663         profileType = enterSyntheticAnnotation("jdk.Profile+Annotation");
664         MethodSymbol m = new MethodSymbol(PUBLIC | ABSTRACT, names.value, intType, profileType.tsym);
665         profileType.tsym.members().enter(m);
666 
667         // Enter a class for arrays.
668         // The class implements java.lang.Cloneable and java.io.Serializable.
669         // It has a final length field and a clone method.
670         ClassType arrayClassType = (ClassType)arrayClass.type;
671         arrayClassType.supertype_field = objectType;
672         arrayClassType.interfaces_field = List.of(cloneableType, serializableType);
673         arrayClass.members_field = WriteableScope.create(arrayClass);
674         lengthVar = new VarSymbol(
675             PUBLIC | FINAL,
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