108 public static final int ANNOTATION = 1<<13;
109
110 /** An enumeration type or an enumeration constant, added in
111 * classfile v49.0. */
112 @Use({FlagTarget.CLASS, FlagTarget.VARIABLE})
113 public static final int ENUM = 1<<14;
114
115 /** Added in SE8, represents constructs implicitly declared in source. */
116 @Use({FlagTarget.MODULE, FlagTarget.VARIABLE})
117 public static final int MANDATED = 1<<15;
118
119 @NotFlag
120 public static final int StandardFlags = 0x0fff;
121
122 // Because the following access flags are overloaded with other
123 // bit positions, we translate them when reading and writing class
124 // files into unique bits positions: ACC_SYNTHETIC <-> SYNTHETIC,
125 // for example.
126 @Use({FlagTarget.CLASS})
127 @NoToStringValue
128 public static final int ACC_SUPER = 1<<5;
129 @Use({FlagTarget.METHOD})
130 @NoToStringValue
131 public static final int ACC_BRIDGE = 1<<6;
132 @Use({FlagTarget.METHOD})
133 @NoToStringValue
134 public static final int ACC_VARARGS = 1<<7;
135 @Use({FlagTarget.CLASS})
136 @NoToStringValue
137 public static final int ACC_MODULE = 1<<15;
138
139 /* ***************************************
140 * Internal compiler flags (no bits in the lower 16).
141 *****************************************/
142
143 /** Flag is set if symbol is deprecated. See also DEPRECATED_REMOVAL.
144 */
145 @Use({FlagTarget.CLASS, FlagTarget.METHOD, FlagTarget.MODULE, FlagTarget.PACKAGE, FlagTarget.TYPE_VAR, FlagTarget.VARIABLE})
146 public static final int DEPRECATED = 1<<17;
147
148 /** Flag is set for a variable symbol if the variable's definition
149 * has an initializer part.
150 */
151 @Use({FlagTarget.VARIABLE})
152 public static final int HASINIT = 1<<18;
153
154 /** Class is an implicitly declared top level class.
155 */
156 @Use({FlagTarget.CLASS})
157 public static final int IMPLICIT_CLASS = 1<<19;
158
159 /** Variable with implicit/inferred type.
160 */
161 @Use(FlagTarget.VARIABLE)
162 public static final int VAR_VARIABLE = 1<<19;
163
164 /** Flag is set for compiler-generated anonymous method symbols
165 * that `own' an initializer block.
166 */
167 @Use({FlagTarget.METHOD})
168 public static final int BLOCK = 1<<20;
169
170 /** A parameter of a lambda function.
171 */
172 @Use(FlagTarget.VARIABLE)
173 public static final int LAMBDA_PARAMETER = 1<<20;
174
175 /** Flag is set for ClassSymbols that are being compiled from source.
176 */
177 @Use({FlagTarget.CLASS})
178 public static final int FROM_SOURCE = 1<<21;
179
180 /** Flag is set for nested classes that do not access instance members
181 * or `this' of an outer class and therefore don't need to be passed
182 * a this$n reference. This value is currently set only for anonymous
183 * classes in superclass constructor calls.
184 * todo: use this value for optimizing away this$n parameters in
185 * other cases.
186 */
187 @Use({FlagTarget.CLASS, FlagTarget.VARIABLE})
188 public static final int NOOUTERTHIS = 1<<22;
189
190 /** Flag is set for package symbols if a package has a member or
191 * directory and therefore exists.
192 */
193 @Use({FlagTarget.CLASS, FlagTarget.PACKAGE})
389 public static final long HAS_RESOURCE = 1L<<52;
390
391 /**
392 * Flag to indicate the given ParamSymbol has a user-friendly name filled.
393 */
394 @Use({FlagTarget.VARIABLE}) //ParamSymbols only
395 public static final long NAME_FILLED = 1L<<52;
396
397 /**
398 * Flag to indicate the given ModuleSymbol is a system module.
399 */
400 @Use({FlagTarget.MODULE})
401 public static final long SYSTEM_MODULE = 1L<<53;
402
403 /**
404 * Flag to indicate the given ClassSymbol is a value based.
405 */
406 @Use({FlagTarget.CLASS})
407 public static final long VALUE_BASED = 1L<<53;
408
409 /**
410 * Flag to indicate the given symbol has a @Deprecated annotation.
411 */
412 @Use({FlagTarget.CLASS, FlagTarget.METHOD, FlagTarget.MODULE, FlagTarget.PACKAGE, FlagTarget.TYPE_VAR, FlagTarget.VARIABLE})
413 public static final long DEPRECATED_ANNOTATION = 1L<<54;
414
415 /**
416 * Flag to indicate the given symbol has been deprecated and marked for removal.
417 */
418 @Use({FlagTarget.CLASS, FlagTarget.METHOD, FlagTarget.MODULE, FlagTarget.PACKAGE, FlagTarget.TYPE_VAR, FlagTarget.VARIABLE})
419 public static final long DEPRECATED_REMOVAL = 1L<<55;
420
421 /**
422 * Flag to indicate the API element in question is for a preview API.
423 */
424 @Use({FlagTarget.CLASS, FlagTarget.METHOD, FlagTarget.MODULE, FlagTarget.PACKAGE, FlagTarget.TYPE_VAR, FlagTarget.VARIABLE})
425 public static final long PREVIEW_API = 1L<<56; //any Symbol kind
426
427 /**
428 * Flag for synthesized default constructors of anonymous classes that have an enclosing expression.
488
489 /**
490 * Flag to indicate parameters that require identity.
491 */
492 @Use({FlagTarget.VARIABLE}) //ParamSymbols only
493 public static final long REQUIRES_IDENTITY = 1L<<62;
494
495 /**
496 * Flag to indicate type annotations have been queued for field initializers.
497 */
498 @Use({FlagTarget.VARIABLE})
499 public static final long FIELD_INIT_TYPE_ANNOTATIONS_QUEUED = 1L<<53;
500
501 /**
502 * Flag to indicate that the class/interface was declared with the non-sealed modifier.
503 */
504 @Use({FlagTarget.CLASS})
505 @CustomToStringValue("non-sealed")
506 public static final long NON_SEALED = 1L<<63; // part of ExtendedStandardFlags, cannot be reused
507
508 /**
509 * Describe modifier flags as they might appear in source code, i.e.,
510 * separated by spaces and in the order suggested by JLS 8.1.1.
511 */
512 public static String toSource(long flags) {
513 return asModifierSet(flags).stream()
514 .map(Modifier::toString)
515 .collect(Collectors.joining(" "));
516 }
517
518 /** Modifier masks.
519 */
520 @NotFlag
521 public static final int
522 AccessFlags = PUBLIC | PROTECTED | PRIVATE,
523 LocalClassFlags = FINAL | ABSTRACT | STRICTFP | ENUM | SYNTHETIC,
524 StaticLocalFlags = LocalClassFlags | STATIC | INTERFACE,
525 MemberClassFlags = LocalClassFlags | INTERFACE | AccessFlags,
526 MemberStaticClassFlags = MemberClassFlags | STATIC,
527 ClassFlags = LocalClassFlags | INTERFACE | PUBLIC | ANNOTATION,
528 InterfaceVarFlags = FINAL | STATIC | PUBLIC,
529 VarFlags = AccessFlags | FINAL | STATIC |
530 VOLATILE | TRANSIENT | ENUM,
531 ConstructorFlags = AccessFlags,
532 InterfaceMethodFlags = ABSTRACT | PUBLIC,
533 MethodFlags = AccessFlags | ABSTRACT | STATIC | NATIVE |
534 SYNCHRONIZED | FINAL | STRICTFP,
535 RecordMethodFlags = AccessFlags | ABSTRACT | STATIC |
536 SYNCHRONIZED | FINAL | STRICTFP;
537 @NotFlag
538 public static final long
539 //NOTE: flags in ExtendedStandardFlags cannot be overlayed across Symbol kinds:
540 ExtendedStandardFlags = (long)StandardFlags | DEFAULT | SEALED | NON_SEALED,
541 ExtendedMemberClassFlags = (long)MemberClassFlags | SEALED | NON_SEALED,
542 ExtendedMemberStaticClassFlags = (long) MemberStaticClassFlags | SEALED | NON_SEALED,
543 ExtendedClassFlags = (long)ClassFlags | SEALED | NON_SEALED,
544 ModifierFlags = ((long)StandardFlags & ~INTERFACE) | DEFAULT | SEALED | NON_SEALED,
545 InterfaceMethodMask = ABSTRACT | PRIVATE | STATIC | PUBLIC | STRICTFP | DEFAULT,
546 AnnotationTypeElementMask = ABSTRACT | PUBLIC,
547 LocalVarFlags = FINAL | PARAMETER,
548 ReceiverParamFlags = PARAMETER;
549
550 public static Set<Modifier> asModifierSet(long flags) {
551 Set<Modifier> modifiers = modifierSets.get(flags);
552 if (modifiers == null) {
553 modifiers = java.util.EnumSet.noneOf(Modifier.class);
554 if (0 != (flags & PUBLIC)) modifiers.add(Modifier.PUBLIC);
555 if (0 != (flags & PROTECTED)) modifiers.add(Modifier.PROTECTED);
556 if (0 != (flags & PRIVATE)) modifiers.add(Modifier.PRIVATE);
557 if (0 != (flags & ABSTRACT)) modifiers.add(Modifier.ABSTRACT);
558 if (0 != (flags & STATIC)) modifiers.add(Modifier.STATIC);
559 if (0 != (flags & SEALED)) modifiers.add(Modifier.SEALED);
560 if (0 != (flags & NON_SEALED))
561 modifiers.add(Modifier.NON_SEALED);
562 if (0 != (flags & FINAL)) modifiers.add(Modifier.FINAL);
563 if (0 != (flags & TRANSIENT)) modifiers.add(Modifier.TRANSIENT);
564 if (0 != (flags & VOLATILE)) modifiers.add(Modifier.VOLATILE);
565 if (0 != (flags & SYNCHRONIZED))
566 modifiers.add(Modifier.SYNCHRONIZED);
567 if (0 != (flags & NATIVE)) modifiers.add(Modifier.NATIVE);
568 if (0 != (flags & STRICTFP)) modifiers.add(Modifier.STRICTFP);
569 if (0 != (flags & DEFAULT)) modifiers.add(Modifier.DEFAULT);
570 modifiers = Collections.unmodifiableSet(modifiers);
571 modifierSets.put(flags, modifiers);
572 }
573 return modifiers;
574 }
575
576 // Cache of modifier sets.
577 private static final Map<Long, Set<Modifier>> modifierSets = new ConcurrentHashMap<>(64);
578
579 public static boolean isStatic(Symbol symbol) {
580 return (symbol.flags() & STATIC) != 0;
581 }
582
583 public static boolean isEnum(Symbol symbol) {
584 return (symbol.flags() & ENUM) != 0;
585 }
586
587 public static boolean isConstant(Symbol.VarSymbol symbol) {
588 return symbol.getConstValue() != null;
589 }
|
108 public static final int ANNOTATION = 1<<13;
109
110 /** An enumeration type or an enumeration constant, added in
111 * classfile v49.0. */
112 @Use({FlagTarget.CLASS, FlagTarget.VARIABLE})
113 public static final int ENUM = 1<<14;
114
115 /** Added in SE8, represents constructs implicitly declared in source. */
116 @Use({FlagTarget.MODULE, FlagTarget.VARIABLE})
117 public static final int MANDATED = 1<<15;
118
119 @NotFlag
120 public static final int StandardFlags = 0x0fff;
121
122 // Because the following access flags are overloaded with other
123 // bit positions, we translate them when reading and writing class
124 // files into unique bits positions: ACC_SYNTHETIC <-> SYNTHETIC,
125 // for example.
126 @Use({FlagTarget.CLASS})
127 @NoToStringValue
128 public static final int ACC_IDENTITY = 1<<5;
129 @Use({FlagTarget.METHOD})
130 @NoToStringValue
131 public static final int ACC_BRIDGE = 1<<6;
132 @Use({FlagTarget.METHOD})
133 @NoToStringValue
134 public static final int ACC_VARARGS = 1<<7;
135 @Use({FlagTarget.VARIABLE})
136 @NoToStringValue
137 public static final int ACC_STRICT = 1<<11;
138 @Use({FlagTarget.CLASS})
139 @NoToStringValue
140 public static final int ACC_MODULE = 1<<15;
141
142 /* ***************************************
143 * Internal compiler flags (no bits in the lower 16).
144 *****************************************/
145
146 /** Flag is set if symbol is deprecated. See also DEPRECATED_REMOVAL.
147 */
148 @Use({FlagTarget.CLASS, FlagTarget.METHOD, FlagTarget.MODULE, FlagTarget.PACKAGE, FlagTarget.TYPE_VAR, FlagTarget.VARIABLE})
149 public static final int DEPRECATED = 1<<17;
150
151 /** Flag is set for a variable symbol if the variable's definition
152 * has an initializer part.
153 */
154 @Use({FlagTarget.VARIABLE})
155 public static final int HASINIT = 1<<18;
156
157 /** Flag is set for a class or interface whose instances have identity
158 * i.e. any concrete class not declared with the modifier `value'
159 * (a) abstract class not declared `value'
160 * (b) older class files with ACC_SUPER bit set
161 */
162 @Use({FlagTarget.CLASS})
163 public static final int IDENTITY_TYPE = 1<<18;
164
165 /** Class is an implicitly declared top level class.
166 */
167 @Use({FlagTarget.CLASS})
168 public static final int IMPLICIT_CLASS = 1<<19;
169
170 /** Variable with implicit/inferred type.
171 */
172 @Use(FlagTarget.VARIABLE)
173 public static final int VAR_VARIABLE = 1<<21;
174
175 /** Flag is set for compiler-generated anonymous method symbols
176 * that `own' an initializer block.
177 */
178 @Use({FlagTarget.METHOD})
179 public static final int BLOCK = 1<<21;
180
181 /** Marks a type as a value class */
182 @Use({FlagTarget.CLASS})
183 public static final int VALUE_CLASS = 1<<20;
184
185 /** A parameter of a lambda function.
186 */
187 @Use(FlagTarget.VARIABLE)
188 public static final int LAMBDA_PARAMETER = 1<<23;
189
190 /** Flag is set for ClassSymbols that are being compiled from source.
191 */
192 @Use({FlagTarget.CLASS})
193 public static final int FROM_SOURCE = 1<<21;
194
195 /** Flag is set for nested classes that do not access instance members
196 * or `this' of an outer class and therefore don't need to be passed
197 * a this$n reference. This value is currently set only for anonymous
198 * classes in superclass constructor calls.
199 * todo: use this value for optimizing away this$n parameters in
200 * other cases.
201 */
202 @Use({FlagTarget.CLASS, FlagTarget.VARIABLE})
203 public static final int NOOUTERTHIS = 1<<22;
204
205 /** Flag is set for package symbols if a package has a member or
206 * directory and therefore exists.
207 */
208 @Use({FlagTarget.CLASS, FlagTarget.PACKAGE})
404 public static final long HAS_RESOURCE = 1L<<52;
405
406 /**
407 * Flag to indicate the given ParamSymbol has a user-friendly name filled.
408 */
409 @Use({FlagTarget.VARIABLE}) //ParamSymbols only
410 public static final long NAME_FILLED = 1L<<52;
411
412 /**
413 * Flag to indicate the given ModuleSymbol is a system module.
414 */
415 @Use({FlagTarget.MODULE})
416 public static final long SYSTEM_MODULE = 1L<<53;
417
418 /**
419 * Flag to indicate the given ClassSymbol is a value based.
420 */
421 @Use({FlagTarget.CLASS})
422 public static final long VALUE_BASED = 1L<<53;
423
424 /**
425 * Flag to indicate the given ClassSymbol is a value based.
426 */
427 @Use({FlagTarget.CLASS})
428 public static final long MIGRATED_VALUE_CLASS = 1L<<57; //ClassSymbols only
429
430 /**
431 * Flag to indicate the given symbol has a @Deprecated annotation.
432 */
433 @Use({FlagTarget.CLASS, FlagTarget.METHOD, FlagTarget.MODULE, FlagTarget.PACKAGE, FlagTarget.TYPE_VAR, FlagTarget.VARIABLE})
434 public static final long DEPRECATED_ANNOTATION = 1L<<54;
435
436 /**
437 * Flag to indicate the given symbol has been deprecated and marked for removal.
438 */
439 @Use({FlagTarget.CLASS, FlagTarget.METHOD, FlagTarget.MODULE, FlagTarget.PACKAGE, FlagTarget.TYPE_VAR, FlagTarget.VARIABLE})
440 public static final long DEPRECATED_REMOVAL = 1L<<55;
441
442 /**
443 * Flag to indicate the API element in question is for a preview API.
444 */
445 @Use({FlagTarget.CLASS, FlagTarget.METHOD, FlagTarget.MODULE, FlagTarget.PACKAGE, FlagTarget.TYPE_VAR, FlagTarget.VARIABLE})
446 public static final long PREVIEW_API = 1L<<56; //any Symbol kind
447
448 /**
449 * Flag for synthesized default constructors of anonymous classes that have an enclosing expression.
509
510 /**
511 * Flag to indicate parameters that require identity.
512 */
513 @Use({FlagTarget.VARIABLE}) //ParamSymbols only
514 public static final long REQUIRES_IDENTITY = 1L<<62;
515
516 /**
517 * Flag to indicate type annotations have been queued for field initializers.
518 */
519 @Use({FlagTarget.VARIABLE})
520 public static final long FIELD_INIT_TYPE_ANNOTATIONS_QUEUED = 1L<<53;
521
522 /**
523 * Flag to indicate that the class/interface was declared with the non-sealed modifier.
524 */
525 @Use({FlagTarget.CLASS})
526 @CustomToStringValue("non-sealed")
527 public static final long NON_SEALED = 1L<<63; // part of ExtendedStandardFlags, cannot be reused
528
529 /**
530 * Flag to indicate that a field is strict
531 */
532 @Use({FlagTarget.VARIABLE})
533 public static final long STRICT = 1L<<19; // VarSymbols
534
535 /**
536 * Describe modifier flags as they might appear in source code, i.e.,
537 * separated by spaces and in the order suggested by JLS 8.1.1.
538 */
539 public static String toSource(long flags) {
540 return asModifierSet(flags).stream()
541 .map(Modifier::toString)
542 .collect(Collectors.joining(" "));
543 }
544
545 /** Modifier masks.
546 */
547 @NotFlag
548 public static final int
549 AccessFlags = PUBLIC | PROTECTED | PRIVATE,
550 LocalClassFlags = FINAL | ABSTRACT | STRICTFP | ENUM | SYNTHETIC | IDENTITY_TYPE,
551 StaticLocalClassFlags = LocalClassFlags | STATIC | INTERFACE,
552 MemberClassFlags = LocalClassFlags | INTERFACE | AccessFlags,
553 MemberStaticClassFlags = MemberClassFlags | STATIC,
554 ClassFlags = LocalClassFlags | INTERFACE | PUBLIC | ANNOTATION,
555 InterfaceVarFlags = FINAL | STATIC | PUBLIC,
556 VarFlags = AccessFlags | FINAL | STATIC |
557 VOLATILE | TRANSIENT | ENUM,
558 ConstructorFlags = AccessFlags,
559 InterfaceMethodFlags = ABSTRACT | PUBLIC,
560 MethodFlags = AccessFlags | ABSTRACT | STATIC | NATIVE |
561 SYNCHRONIZED | FINAL | STRICTFP,
562 RecordMethodFlags = AccessFlags | ABSTRACT | STATIC |
563 SYNCHRONIZED | FINAL | STRICTFP;
564 @NotFlag
565 public static final long
566 //NOTE: flags in ExtendedStandardFlags cannot be overlayed across Symbol kinds:
567 ExtendedStandardFlags = (long)StandardFlags | DEFAULT | SEALED | NON_SEALED | VALUE_CLASS,
568 ExtendedMemberClassFlags = (long)MemberClassFlags | SEALED | NON_SEALED | VALUE_CLASS,
569 ExtendedMemberStaticClassFlags = (long) MemberStaticClassFlags | SEALED | NON_SEALED | VALUE_CLASS,
570 ExtendedClassFlags = (long)ClassFlags | SEALED | NON_SEALED | VALUE_CLASS,
571 ExtendedLocalClassFlags = (long) LocalClassFlags | VALUE_CLASS,
572 ExtendedStaticLocalClassFlags = (long) StaticLocalClassFlags | VALUE_CLASS,
573 ValueFieldFlags = (long) VarFlags | STRICT | FINAL,
574 ModifierFlags = ((long)StandardFlags & ~INTERFACE) | DEFAULT | SEALED | NON_SEALED | VALUE_CLASS,
575 InterfaceMethodMask = ABSTRACT | PRIVATE | STATIC | PUBLIC | STRICTFP | DEFAULT,
576 AnnotationTypeElementMask = ABSTRACT | PUBLIC,
577 LocalVarFlags = FINAL | PARAMETER,
578 ReceiverParamFlags = PARAMETER;
579
580 public static Set<Modifier> asModifierSet(long flags) {
581 Set<Modifier> modifiers = modifierSets.get(flags);
582 if (modifiers == null) {
583 modifiers = java.util.EnumSet.noneOf(Modifier.class);
584 if (0 != (flags & PUBLIC)) modifiers.add(Modifier.PUBLIC);
585 if (0 != (flags & PROTECTED)) modifiers.add(Modifier.PROTECTED);
586 if (0 != (flags & PRIVATE)) modifiers.add(Modifier.PRIVATE);
587 if (0 != (flags & ABSTRACT)) modifiers.add(Modifier.ABSTRACT);
588 if (0 != (flags & STATIC)) modifiers.add(Modifier.STATIC);
589 if (0 != (flags & SEALED)) modifiers.add(Modifier.SEALED);
590 if (0 != (flags & NON_SEALED))
591 modifiers.add(Modifier.NON_SEALED);
592 if (0 != (flags & FINAL)) modifiers.add(Modifier.FINAL);
593 if (0 != (flags & TRANSIENT)) modifiers.add(Modifier.TRANSIENT);
594 if (0 != (flags & VOLATILE)) modifiers.add(Modifier.VOLATILE);
595 if (0 != (flags & SYNCHRONIZED))
596 modifiers.add(Modifier.SYNCHRONIZED);
597 if (0 != (flags & NATIVE)) modifiers.add(Modifier.NATIVE);
598 if (0 != (flags & STRICTFP)) modifiers.add(Modifier.STRICTFP);
599 if (0 != (flags & DEFAULT)) modifiers.add(Modifier.DEFAULT);
600 if (0 != (flags & VALUE_CLASS)) modifiers.add(Modifier.VALUE);
601 modifiers = Collections.unmodifiableSet(modifiers);
602 modifierSets.put(flags, modifiers);
603 }
604 return modifiers;
605 }
606
607 // Cache of modifier sets.
608 private static final Map<Long, Set<Modifier>> modifierSets = new ConcurrentHashMap<>(64);
609
610 public static boolean isStatic(Symbol symbol) {
611 return (symbol.flags() & STATIC) != 0;
612 }
613
614 public static boolean isEnum(Symbol symbol) {
615 return (symbol.flags() & ENUM) != 0;
616 }
617
618 public static boolean isConstant(Symbol.VarSymbol symbol) {
619 return symbol.getConstValue() != null;
620 }
|