1 /*
2 * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.tools.javac.comp;
27
28 import java.util.Map;
29
30 import com.sun.tools.javac.util.*;
31 import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
32 import com.sun.tools.javac.code.*;
33 import com.sun.tools.javac.code.Symbol.*;
34 import com.sun.tools.javac.tree.*;
35 import com.sun.tools.javac.tree.JCTree.*;
36
37 import static com.sun.tools.javac.code.TypeTag.ARRAY;
38 import static com.sun.tools.javac.code.TypeTag.CLASS;
39 import static com.sun.tools.javac.tree.JCTree.Tag.*;
40
41 /** Enter annotations on symbols. Annotations accumulate in a queue,
42 * which is processed at the top level of any set of recursive calls
43 * requesting it be processed.
44 *
45 * <p><b>This is NOT part of any supported API.
46 * If you write code that depends on this, you do so at your own risk.
47 * This code and its internal interfaces are subject to change or
48 * deletion without notice.</b>
49 */
50 public class Annotate {
51 protected static final Context.Key<Annotate> annotateKey = new Context.Key<>();
52
53 public static Annotate instance(Context context) {
54 Annotate instance = context.get(annotateKey);
55 if (instance == null)
56 instance = new Annotate(context);
57 return instance;
58 }
59
60 final Attr attr;
61 final TreeMaker make;
62 final Log log;
63 final Symtab syms;
64 final Names names;
65 final Resolve rs;
66 final Types types;
67 final ConstFold cfolder;
68 final Check chk;
69
70 protected Annotate(Context context) {
71 context.put(annotateKey, this);
72 attr = Attr.instance(context);
73 make = TreeMaker.instance(context);
74 log = Log.instance(context);
75 syms = Symtab.instance(context);
76 names = Names.instance(context);
77 rs = Resolve.instance(context);
78 types = Types.instance(context);
79 cfolder = ConstFold.instance(context);
80 chk = Check.instance(context);
81 }
82
83 /* ********************************************************************
84 * Queue maintenance
85 *********************************************************************/
86
87 private int enterCount = 0;
88
89 ListBuffer<Worker> q = new ListBuffer<>();
90 ListBuffer<Worker> typesQ = new ListBuffer<>();
91 ListBuffer<Worker> repeatedQ = new ListBuffer<>();
92 ListBuffer<Worker> afterRepeatedQ = new ListBuffer<>();
93 ListBuffer<Worker> validateQ = new ListBuffer<>();
94
95 public void earlier(Worker a) {
96 q.prepend(a);
97 }
98
99 public void normal(Worker a) {
100 q.append(a);
101 }
102
103 public void typeAnnotation(Worker a) {
104 typesQ.append(a);
105 }
106
107 public void repeated(Worker a) {
108 repeatedQ.append(a);
109 }
110
111 public void afterRepeated(Worker a) {
112 afterRepeatedQ.append(a);
113 }
114
115 public void validate(Worker a) {
116 validateQ.append(a);
117 }
118
119 /** Called when the Enter phase starts. */
120 public void enterStart() {
121 enterCount++;
122 }
123
124 /** Called after the Enter phase completes. */
125 public void enterDone() {
126 enterCount--;
127 flush();
128 }
129
130 /** Variant which allows for a delayed flush of annotations.
131 * Needed by ClassReader */
132 public void enterDoneWithoutFlush() {
133 enterCount--;
134 }
135
136 public void flush() {
137 if (enterCount != 0) return;
138 enterCount++;
139 try {
140 while (q.nonEmpty()) {
141 q.next().run();
142 }
143 while (typesQ.nonEmpty()) {
144 typesQ.next().run();
145 }
146 while (repeatedQ.nonEmpty()) {
147 repeatedQ.next().run();
148 }
149 while (afterRepeatedQ.nonEmpty()) {
150 afterRepeatedQ.next().run();
151 }
152 while (validateQ.nonEmpty()) {
153 validateQ.next().run();
154 }
155 } finally {
156 enterCount--;
157 }
158 }
159
160 /** A client that needs to run during {@link #flush()} registers an worker
161 * into one of the queues defined in this class. The queues are: {@link #earlier(Worker)},
162 * {@link #normal(Worker)}, {@link #typeAnnotation(Worker)}, {@link #repeated(Worker)},
163 * {@link #afterRepeated(Worker)}, {@link #validate(Worker)}.
164 * The {@link Worker#run()} method will called inside the {@link #flush()}
165 * call. Queues are empties in the abovementioned order.
166 */
167 public interface Worker {
168 void run();
169 String toString();
170 }
171
172 /**
173 * This context contains all the information needed to synthesize new
174 * annotations trees by the completer for repeating annotations.
175 */
176 public class AnnotateRepeatedContext<T extends Attribute.Compound> {
177 public final Env<AttrContext> env;
178 public final Map<Symbol.TypeSymbol, ListBuffer<T>> annotated;
179 public final Map<T, JCDiagnostic.DiagnosticPosition> pos;
180 public final Log log;
181 public final boolean isTypeCompound;
182
183 public AnnotateRepeatedContext(Env<AttrContext> env,
184 Map<Symbol.TypeSymbol, ListBuffer<T>> annotated,
185 Map<T, JCDiagnostic.DiagnosticPosition> pos,
186 Log log,
187 boolean isTypeCompound) {
188 Assert.checkNonNull(env);
189 Assert.checkNonNull(annotated);
190 Assert.checkNonNull(pos);
191 Assert.checkNonNull(log);
192
193 this.env = env;
194 this.annotated = annotated;
195 this.pos = pos;
196 this.log = log;
197 this.isTypeCompound = isTypeCompound;
198 }
199
200 /**
201 * Process a list of repeating annotations returning a new
202 * Attribute.Compound that is the attribute for the synthesized tree
203 * for the container.
204 *
205 * @param repeatingAnnotations a List of repeating annotations
206 * @return a new Attribute.Compound that is the container for the repeatingAnnotations
207 */
208 public T processRepeatedAnnotations(List<T> repeatingAnnotations, Symbol sym) {
209 return Annotate.this.processRepeatedAnnotations(repeatingAnnotations, this, sym);
210 }
211
212 /**
213 * Queue the Worker a on the repeating annotations queue of the
214 * Annotate instance this context belongs to.
215 *
216 * @param a the Worker to enqueue for repeating annotation annotating
217 */
218 public void annotateRepeated(Worker a) {
219 Annotate.this.repeated(a);
220 }
221 }
222
223 /* ********************************************************************
224 * Compute an attribute from its annotation.
225 *********************************************************************/
226
227 /** Process a single compound annotation, returning its
228 * Attribute. Used from MemberEnter for attaching the attributes
229 * to the annotated symbol.
230 */
231 Attribute.Compound enterAnnotation(JCAnnotation a,
232 Type expected,
233 Env<AttrContext> env) {
234 return enterAnnotation(a, expected, env, false);
235 }
236
237 Attribute.TypeCompound enterTypeAnnotation(JCAnnotation a,
238 Type expected,
239 Env<AttrContext> env) {
240 return (Attribute.TypeCompound) enterAnnotation(a, expected, env, true);
241 }
242
243 // boolean typeAnnotation determines whether the method returns
244 // a Compound (false) or TypeCompound (true).
245 Attribute.Compound enterAnnotation(JCAnnotation a,
246 Type expected,
247 Env<AttrContext> env,
248 boolean typeAnnotation) {
249 // The annotation might have had its type attributed (but not checked)
250 // by attr.attribAnnotationTypes during MemberEnter, in which case we do not
251 // need to do it again.
252 Type at = (a.annotationType.type != null ? a.annotationType.type
253 : attr.attribType(a.annotationType, env));
254 a.type = chk.checkType(a.annotationType.pos(), at, expected);
255 boolean isError = a.type.isErroneous();
256 if ((a.type.tsym.flags() & Flags.ANNOTATION) == 0 && !isError) {
257 log.error(a.annotationType.pos(),
258 "not.annotation.type", a.type.toString());
259 isError = true;
260 }
261 List<JCExpression> args = a.args;
262 if (args.length() == 1 && !args.head.hasTag(ASSIGN)) {
263 // special case: elided "value=" assumed
264 args.head = make.at(args.head.pos).
265 Assign(make.Ident(names.value), args.head);
266 }
267 ListBuffer<Pair<MethodSymbol,Attribute>> buf =
268 new ListBuffer<>();
269 for (List<JCExpression> tl = args; tl.nonEmpty(); tl = tl.tail) {
270 JCExpression t = tl.head;
271 if (!t.hasTag(ASSIGN)) {
272 log.error(t.pos(), "annotation.value.must.be.name.value");
273 enterAttributeValue(t.type = syms.errType, t, env);
274 continue;
275 }
276 JCAssign assign = (JCAssign)t;
277 if (!assign.lhs.hasTag(IDENT)) {
278 log.error(t.pos(), "annotation.value.must.be.name.value");
279 enterAttributeValue(t.type = syms.errType, t, env);
280 continue;
281 }
282 JCIdent left = (JCIdent)assign.lhs;
283 Symbol method = rs.resolveQualifiedMethod(assign.rhs.pos(),
284 env,
285 a.type,
286 left.name,
287 List.<Type>nil(),
288 null);
289 left.sym = method;
290 left.type = method.type;
291 if (method.owner != a.type.tsym && !isError)
292 log.error(left.pos(), "no.annotation.member", left.name, a.type);
293 Type result = method.type.getReturnType();
294 Attribute value = enterAttributeValue(result, assign.rhs, env);
295 if (!method.type.isErroneous())
296 buf.append(new Pair<>((MethodSymbol)method, value));
297 t.type = result;
298 }
299 if (typeAnnotation) {
300 if (a.attribute == null || !(a.attribute instanceof Attribute.TypeCompound)) {
301 // Create a new TypeCompound
302 Attribute.TypeCompound tc = new Attribute.TypeCompound(a.type, buf.toList(), new TypeAnnotationPosition());
303 a.attribute = tc;
304 return tc;
305 } else {
306 // Use an existing TypeCompound
307 return a.attribute;
308 }
309 } else {
310 Attribute.Compound ac = new Attribute.Compound(a.type, buf.toList());
311 a.attribute = ac;
312 return ac;
313 }
314 }
315
316 Attribute enterAttributeValue(Type expected,
317 JCExpression tree,
318 Env<AttrContext> env) {
319 //first, try completing the attribution value sym - if a completion
320 //error is thrown, we should recover gracefully, and display an
321 //ordinary resolution diagnostic.
322 try {
323 expected.tsym.complete();
324 } catch(CompletionFailure e) {
325 log.error(tree.pos(), "cant.resolve", Kinds.kindName(e.sym), e.sym);
326 expected = syms.errType;
327 }
328 if (expected.hasTag(ARRAY)) {
329 if (!tree.hasTag(NEWARRAY)) {
330 tree = make.at(tree.pos).
331 NewArray(null, List.<JCExpression>nil(), List.of(tree));
332 }
333 JCNewArray na = (JCNewArray)tree;
334 if (na.elemtype != null) {
335 log.error(na.elemtype.pos(), "new.not.allowed.in.annotation");
336 }
337 ListBuffer<Attribute> buf = new ListBuffer<>();
338 for (List<JCExpression> l = na.elems; l.nonEmpty(); l=l.tail) {
339 buf.append(enterAttributeValue(types.elemtype(expected),
340 l.head,
341 env));
342 }
343 na.type = expected;
344 return new Attribute.
345 Array(expected, buf.toArray(new Attribute[buf.length()]));
346 }
347 if (tree.hasTag(NEWARRAY)) { //error recovery
348 if (!expected.isErroneous())
349 log.error(tree.pos(), "annotation.value.not.allowable.type");
350 JCNewArray na = (JCNewArray)tree;
351 if (na.elemtype != null) {
352 log.error(na.elemtype.pos(), "new.not.allowed.in.annotation");
353 }
354 for (List<JCExpression> l = na.elems; l.nonEmpty(); l=l.tail) {
355 enterAttributeValue(syms.errType,
356 l.head,
357 env);
358 }
359 return new Attribute.Error(syms.errType);
360 }
361 if ((expected.tsym.flags() & Flags.ANNOTATION) != 0) {
362 if (tree.hasTag(ANNOTATION)) {
363 return enterAnnotation((JCAnnotation)tree, expected, env);
364 } else {
365 log.error(tree.pos(), "annotation.value.must.be.annotation");
366 expected = syms.errType;
367 }
368 }
369 if (tree.hasTag(ANNOTATION)) { //error recovery
370 if (!expected.isErroneous())
371 log.error(tree.pos(), "annotation.not.valid.for.type", expected);
372 enterAnnotation((JCAnnotation)tree, syms.errType, env);
373 return new Attribute.Error(((JCAnnotation)tree).annotationType.type);
374 }
375 if (expected.isPrimitive() ||
376 (types.isSameType(expected, syms.stringType) && !expected.hasTag(TypeTag.ERROR))) {
377 Type result = attr.attribExpr(tree, env, expected);
378 if (result.isErroneous())
379 return new Attribute.Error(result.getOriginalType());
380 if (result.constValue() == null) {
381 log.error(tree.pos(), "attribute.value.must.be.constant");
382 return new Attribute.Error(expected);
383 }
384 result = cfolder.coerce(result, expected);
385 return new Attribute.Constant(expected, result.constValue());
386 }
387 if (expected.tsym == syms.classType.tsym) {
388 Type result = attr.attribExpr(tree, env, expected);
389 if (result.isErroneous()) {
390 // Does it look like an unresolved class literal?
391 if (TreeInfo.name(tree) == names._class &&
392 ((JCFieldAccess) tree).selected.type.isErroneous()) {
393 Name n = (((JCFieldAccess) tree).selected).type.tsym.flatName();
394 return new Attribute.UnresolvedClass(expected,
395 types.createErrorType(n,
396 syms.unknownSymbol, syms.classType));
397 } else {
398 return new Attribute.Error(result.getOriginalType());
399 }
400 }
401
402 // Class literals look like field accesses of a field named class
403 // at the tree level
404 if (TreeInfo.name(tree) != names._class) {
405 log.error(tree.pos(), "annotation.value.must.be.class.literal");
406 return new Attribute.Error(syms.errType);
407 }
408 return new Attribute.Class(types,
409 (((JCFieldAccess) tree).selected).type);
410 }
411 if (expected.hasTag(CLASS) &&
412 (expected.tsym.flags() & Flags.ENUM) != 0) {
413 Type result = attr.attribExpr(tree, env, expected);
414 Symbol sym = TreeInfo.symbol(tree);
415 if (sym == null ||
416 TreeInfo.nonstaticSelect(tree) ||
417 sym.kind != Kinds.VAR ||
418 (sym.flags() & Flags.ENUM) == 0) {
419 log.error(tree.pos(), "enum.annotation.must.be.enum.constant");
420 return new Attribute.Error(result.getOriginalType());
421 }
422 VarSymbol enumerator = (VarSymbol) sym;
423 return new Attribute.Enum(expected, enumerator);
424 }
425 //error recovery:
426 if (!expected.isErroneous())
427 log.error(tree.pos(), "annotation.value.not.allowable.type");
428 return new Attribute.Error(attr.attribExpr(tree, env, expected));
429 }
430
431 /* *********************************
432 * Support for repeating annotations
433 ***********************************/
434
435 /* Process repeated annotations. This method returns the
436 * synthesized container annotation or null IFF all repeating
437 * annotation are invalid. This method reports errors/warnings.
438 */
439 private <T extends Attribute.Compound> T processRepeatedAnnotations(List<T> annotations,
440 AnnotateRepeatedContext<T> ctx,
441 Symbol on) {
442 T firstOccurrence = annotations.head;
443 List<Attribute> repeated = List.nil();
444 Type origAnnoType = null;
445 Type arrayOfOrigAnnoType = null;
446 Type targetContainerType = null;
447 MethodSymbol containerValueSymbol = null;
448
449 Assert.check(!annotations.isEmpty() &&
450 !annotations.tail.isEmpty()); // i.e. size() > 1
451
452 int count = 0;
453 for (List<T> al = annotations;
454 !al.isEmpty();
455 al = al.tail)
456 {
457 count++;
458
459 // There must be more than a single anno in the annotation list
460 Assert.check(count > 1 || !al.tail.isEmpty());
461
462 T currentAnno = al.head;
463
464 origAnnoType = currentAnno.type;
465 if (arrayOfOrigAnnoType == null) {
466 arrayOfOrigAnnoType = types.makeArrayType(origAnnoType);
467 }
468
469 // Only report errors if this isn't the first occurrence I.E. count > 1
470 boolean reportError = count > 1;
471 Type currentContainerType = getContainingType(currentAnno, ctx.pos.get(currentAnno), reportError);
472 if (currentContainerType == null) {
473 continue;
474 }
475 // Assert that the target Container is == for all repeated
476 // annos of the same annotation type, the types should
477 // come from the same Symbol, i.e. be '=='
478 Assert.check(targetContainerType == null || currentContainerType == targetContainerType);
479 targetContainerType = currentContainerType;
480
481 containerValueSymbol = validateContainer(targetContainerType, origAnnoType, ctx.pos.get(currentAnno));
482
483 if (containerValueSymbol == null) { // Check of CA type failed
484 // errors are already reported
485 continue;
486 }
487
488 repeated = repeated.prepend(currentAnno);
489 }
490
491 if (!repeated.isEmpty()) {
492 repeated = repeated.reverse();
493 TreeMaker m = make.at(ctx.pos.get(firstOccurrence));
494 Pair<MethodSymbol, Attribute> p =
495 new Pair<MethodSymbol, Attribute>(containerValueSymbol,
496 new Attribute.Array(arrayOfOrigAnnoType, repeated));
497 if (ctx.isTypeCompound) {
498 /* TODO: the following code would be cleaner:
499 Attribute.TypeCompound at = new Attribute.TypeCompound(targetContainerType, List.of(p),
500 ((Attribute.TypeCompound)annotations.head).position);
501 JCTypeAnnotation annoTree = m.TypeAnnotation(at);
502 at = enterTypeAnnotation(annoTree, targetContainerType, ctx.env);
503 */
504 // However, we directly construct the TypeCompound to keep the
505 // direct relation to the contained TypeCompounds.
506 Attribute.TypeCompound at = new Attribute.TypeCompound(targetContainerType, List.of(p),
507 ((Attribute.TypeCompound)annotations.head).position);
508
509 // TODO: annotation applicability checks from below?
510
511 at.setSynthesized(true);
512
513 @SuppressWarnings("unchecked")
514 T x = (T) at;
515 return x;
516 } else {
517 Attribute.Compound c = new Attribute.Compound(targetContainerType, List.of(p));
518 JCAnnotation annoTree = m.Annotation(c);
519
520 if (!chk.annotationApplicable(annoTree, on))
521 log.error(annoTree.pos(), "invalid.repeatable.annotation.incompatible.target", targetContainerType, origAnnoType);
522
523 if (!chk.validateAnnotationDeferErrors(annoTree))
524 log.error(annoTree.pos(), "duplicate.annotation.invalid.repeated", origAnnoType);
525
526 c = enterAnnotation(annoTree, targetContainerType, ctx.env);
527 c.setSynthesized(true);
528
529 @SuppressWarnings("unchecked")
530 T x = (T) c;
531 return x;
532 }
533 } else {
534 return null; // errors should have been reported elsewhere
535 }
536 }
537
538 /** Fetches the actual Type that should be the containing annotation. */
539 private Type getContainingType(Attribute.Compound currentAnno,
540 DiagnosticPosition pos,
541 boolean reportError)
542 {
543 Type origAnnoType = currentAnno.type;
544 TypeSymbol origAnnoDecl = origAnnoType.tsym;
545
546 // Fetch the Repeatable annotation from the current
547 // annotation's declaration, or null if it has none
548 Attribute.Compound ca = origAnnoDecl.attribute(syms.repeatableType.tsym);
549 if (ca == null) { // has no Repeatable annotation
550 if (reportError)
551 log.error(pos, "duplicate.annotation.missing.container", origAnnoType, syms.repeatableType);
552 return null;
553 }
554
555 return filterSame(extractContainingType(ca, pos, origAnnoDecl),
556 origAnnoType);
557 }
558
559 // returns null if t is same as 's', returns 't' otherwise
560 private Type filterSame(Type t, Type s) {
561 if (t == null || s == null) {
562 return t;
563 }
564
565 return types.isSameType(t, s) ? null : t;
566 }
567
568 /** Extract the actual Type to be used for a containing annotation. */
569 private Type extractContainingType(Attribute.Compound ca,
570 DiagnosticPosition pos,
571 TypeSymbol annoDecl)
572 {
573 // The next three checks check that the Repeatable annotation
574 // on the declaration of the annotation type that is repeating is
575 // valid.
576
577 // Repeatable must have at least one element
578 if (ca.values.isEmpty()) {
579 log.error(pos, "invalid.repeatable.annotation", annoDecl);
580 return null;
581 }
582 Pair<MethodSymbol,Attribute> p = ca.values.head;
583 Name name = p.fst.name;
584 if (name != names.value) { // should contain only one element, named "value"
585 log.error(pos, "invalid.repeatable.annotation", annoDecl);
586 return null;
587 }
588 if (!(p.snd instanceof Attribute.Class)) { // check that the value of "value" is an Attribute.Class
589 log.error(pos, "invalid.repeatable.annotation", annoDecl);
590 return null;
591 }
592
593 return ((Attribute.Class)p.snd).getValue();
594 }
595
596 /* Validate that the suggested targetContainerType Type is a valid
597 * container type for repeated instances of originalAnnoType
598 * annotations. Return null and report errors if this is not the
599 * case, return the MethodSymbol of the value element in
600 * targetContainerType if it is suitable (this is needed to
601 * synthesize the container). */
602 private MethodSymbol validateContainer(Type targetContainerType,
603 Type originalAnnoType,
604 DiagnosticPosition pos) {
605 MethodSymbol containerValueSymbol = null;
606 boolean fatalError = false;
607
608 // Validate that there is a (and only 1) value method
609 Scope scope = targetContainerType.tsym.members();
610 int nr_value_elems = 0;
611 boolean error = false;
612 for(Symbol elm : scope.getElementsByName(names.value)) {
613 nr_value_elems++;
614
615 if (nr_value_elems == 1 &&
616 elm.kind == Kinds.MTH) {
617 containerValueSymbol = (MethodSymbol)elm;
618 } else {
619 error = true;
620 }
621 }
622 if (error) {
623 log.error(pos,
624 "invalid.repeatable.annotation.multiple.values",
625 targetContainerType,
626 nr_value_elems);
627 return null;
628 } else if (nr_value_elems == 0) {
629 log.error(pos,
630 "invalid.repeatable.annotation.no.value",
631 targetContainerType);
632 return null;
633 }
634
635 // validate that the 'value' element is a method
636 // probably "impossible" to fail this
637 if (containerValueSymbol.kind != Kinds.MTH) {
638 log.error(pos,
639 "invalid.repeatable.annotation.invalid.value",
640 targetContainerType);
641 fatalError = true;
642 }
643
644 // validate that the 'value' element has the correct return type
645 // i.e. array of original anno
646 Type valueRetType = containerValueSymbol.type.getReturnType();
647 Type expectedType = types.makeArrayType(originalAnnoType);
648 if (!(types.isArray(valueRetType) &&
649 types.isSameType(expectedType, valueRetType))) {
650 log.error(pos,
651 "invalid.repeatable.annotation.value.return",
652 targetContainerType,
653 valueRetType,
654 expectedType);
655 fatalError = true;
656 }
657 if (error) {
658 fatalError = true;
659 }
660
661 // The conditions for a valid containing annotation are made
662 // in Check.validateRepeatedAnnotaton();
663
664 return fatalError ? null : containerValueSymbol;
665 }
666 }