1 //===--- DeclSpec.cpp - Declaration Specifier Semantic Analysis -----------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements semantic analysis for declaration specifiers.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "clang/Sema/DeclSpec.h"
14 #include "clang/AST/ASTContext.h"
15 #include "clang/AST/DeclCXX.h"
16 #include "clang/AST/Expr.h"
17 #include "clang/AST/LocInfoType.h"
18 #include "clang/AST/TypeLoc.h"
19 #include "clang/Basic/LangOptions.h"
20 #include "clang/Basic/SourceManager.h"
21 #include "clang/Basic/Specifiers.h"
22 #include "clang/Basic/TargetInfo.h"
23 #include "clang/Sema/ParsedTemplate.h"
24 #include "clang/Sema/Sema.h"
25 #include "clang/Sema/SemaDiagnostic.h"
26 #include "llvm/ADT/STLExtras.h"
27 #include "llvm/ADT/SmallString.h"
28 #include <cstring>
29 using namespace clang;
30
31
setTemplateId(TemplateIdAnnotation * TemplateId)32 void UnqualifiedId::setTemplateId(TemplateIdAnnotation *TemplateId) {
33 assert(TemplateId && "NULL template-id annotation?");
34 assert(!TemplateId->isInvalid() &&
35 "should not convert invalid template-ids to unqualified-ids");
36
37 Kind = UnqualifiedIdKind::IK_TemplateId;
38 this->TemplateId = TemplateId;
39 StartLocation = TemplateId->TemplateNameLoc;
40 EndLocation = TemplateId->RAngleLoc;
41 }
42
setConstructorTemplateId(TemplateIdAnnotation * TemplateId)43 void UnqualifiedId::setConstructorTemplateId(TemplateIdAnnotation *TemplateId) {
44 assert(TemplateId && "NULL template-id annotation?");
45 assert(!TemplateId->isInvalid() &&
46 "should not convert invalid template-ids to unqualified-ids");
47
48 Kind = UnqualifiedIdKind::IK_ConstructorTemplateId;
49 this->TemplateId = TemplateId;
50 StartLocation = TemplateId->TemplateNameLoc;
51 EndLocation = TemplateId->RAngleLoc;
52 }
53
Extend(ASTContext & Context,SourceLocation TemplateKWLoc,TypeLoc TL,SourceLocation ColonColonLoc)54 void CXXScopeSpec::Extend(ASTContext &Context, SourceLocation TemplateKWLoc,
55 TypeLoc TL, SourceLocation ColonColonLoc) {
56 Builder.Extend(Context, TemplateKWLoc, TL, ColonColonLoc);
57 if (Range.getBegin().isInvalid())
58 Range.setBegin(TL.getBeginLoc());
59 Range.setEnd(ColonColonLoc);
60
61 assert(Range == Builder.getSourceRange() &&
62 "NestedNameSpecifierLoc range computation incorrect");
63 }
64
Extend(ASTContext & Context,IdentifierInfo * Identifier,SourceLocation IdentifierLoc,SourceLocation ColonColonLoc)65 void CXXScopeSpec::Extend(ASTContext &Context, IdentifierInfo *Identifier,
66 SourceLocation IdentifierLoc,
67 SourceLocation ColonColonLoc) {
68 Builder.Extend(Context, Identifier, IdentifierLoc, ColonColonLoc);
69
70 if (Range.getBegin().isInvalid())
71 Range.setBegin(IdentifierLoc);
72 Range.setEnd(ColonColonLoc);
73
74 assert(Range == Builder.getSourceRange() &&
75 "NestedNameSpecifierLoc range computation incorrect");
76 }
77
Extend(ASTContext & Context,NamespaceDecl * Namespace,SourceLocation NamespaceLoc,SourceLocation ColonColonLoc)78 void CXXScopeSpec::Extend(ASTContext &Context, NamespaceDecl *Namespace,
79 SourceLocation NamespaceLoc,
80 SourceLocation ColonColonLoc) {
81 Builder.Extend(Context, Namespace, NamespaceLoc, ColonColonLoc);
82
83 if (Range.getBegin().isInvalid())
84 Range.setBegin(NamespaceLoc);
85 Range.setEnd(ColonColonLoc);
86
87 assert(Range == Builder.getSourceRange() &&
88 "NestedNameSpecifierLoc range computation incorrect");
89 }
90
Extend(ASTContext & Context,NamespaceAliasDecl * Alias,SourceLocation AliasLoc,SourceLocation ColonColonLoc)91 void CXXScopeSpec::Extend(ASTContext &Context, NamespaceAliasDecl *Alias,
92 SourceLocation AliasLoc,
93 SourceLocation ColonColonLoc) {
94 Builder.Extend(Context, Alias, AliasLoc, ColonColonLoc);
95
96 if (Range.getBegin().isInvalid())
97 Range.setBegin(AliasLoc);
98 Range.setEnd(ColonColonLoc);
99
100 assert(Range == Builder.getSourceRange() &&
101 "NestedNameSpecifierLoc range computation incorrect");
102 }
103
MakeGlobal(ASTContext & Context,SourceLocation ColonColonLoc)104 void CXXScopeSpec::MakeGlobal(ASTContext &Context,
105 SourceLocation ColonColonLoc) {
106 Builder.MakeGlobal(Context, ColonColonLoc);
107
108 Range = SourceRange(ColonColonLoc);
109
110 assert(Range == Builder.getSourceRange() &&
111 "NestedNameSpecifierLoc range computation incorrect");
112 }
113
MakeSuper(ASTContext & Context,CXXRecordDecl * RD,SourceLocation SuperLoc,SourceLocation ColonColonLoc)114 void CXXScopeSpec::MakeSuper(ASTContext &Context, CXXRecordDecl *RD,
115 SourceLocation SuperLoc,
116 SourceLocation ColonColonLoc) {
117 Builder.MakeSuper(Context, RD, SuperLoc, ColonColonLoc);
118
119 Range.setBegin(SuperLoc);
120 Range.setEnd(ColonColonLoc);
121
122 assert(Range == Builder.getSourceRange() &&
123 "NestedNameSpecifierLoc range computation incorrect");
124 }
125
MakeTrivial(ASTContext & Context,NestedNameSpecifier * Qualifier,SourceRange R)126 void CXXScopeSpec::MakeTrivial(ASTContext &Context,
127 NestedNameSpecifier *Qualifier, SourceRange R) {
128 Builder.MakeTrivial(Context, Qualifier, R);
129 Range = R;
130 }
131
Adopt(NestedNameSpecifierLoc Other)132 void CXXScopeSpec::Adopt(NestedNameSpecifierLoc Other) {
133 if (!Other) {
134 Range = SourceRange();
135 Builder.Clear();
136 return;
137 }
138
139 Range = Other.getSourceRange();
140 Builder.Adopt(Other);
141 assert(Range == Builder.getSourceRange() &&
142 "NestedNameSpecifierLoc range computation incorrect");
143 }
144
getLastQualifierNameLoc() const145 SourceLocation CXXScopeSpec::getLastQualifierNameLoc() const {
146 if (!Builder.getRepresentation())
147 return SourceLocation();
148 return Builder.getTemporary().getLocalBeginLoc();
149 }
150
151 NestedNameSpecifierLoc
getWithLocInContext(ASTContext & Context) const152 CXXScopeSpec::getWithLocInContext(ASTContext &Context) const {
153 if (!Builder.getRepresentation())
154 return NestedNameSpecifierLoc();
155
156 return Builder.getWithLocInContext(Context);
157 }
158
159 /// DeclaratorChunk::getFunction - Return a DeclaratorChunk for a function.
160 /// "TheDeclarator" is the declarator that this will be added to.
getFunction(bool hasProto,bool isAmbiguous,SourceLocation LParenLoc,ParamInfo * Params,unsigned NumParams,SourceLocation EllipsisLoc,SourceLocation RParenLoc,bool RefQualifierIsLvalueRef,SourceLocation RefQualifierLoc,SourceLocation MutableLoc,ExceptionSpecificationType ESpecType,SourceRange ESpecRange,ParsedType * Exceptions,SourceRange * ExceptionRanges,unsigned NumExceptions,Expr * NoexceptExpr,CachedTokens * ExceptionSpecTokens,ArrayRef<NamedDecl * > DeclsInPrototype,SourceLocation LocalRangeBegin,SourceLocation LocalRangeEnd,Declarator & TheDeclarator,TypeResult TrailingReturnType,SourceLocation TrailingReturnTypeLoc,DeclSpec * MethodQualifiers)161 DeclaratorChunk DeclaratorChunk::getFunction(bool hasProto,
162 bool isAmbiguous,
163 SourceLocation LParenLoc,
164 ParamInfo *Params,
165 unsigned NumParams,
166 SourceLocation EllipsisLoc,
167 SourceLocation RParenLoc,
168 bool RefQualifierIsLvalueRef,
169 SourceLocation RefQualifierLoc,
170 SourceLocation MutableLoc,
171 ExceptionSpecificationType
172 ESpecType,
173 SourceRange ESpecRange,
174 ParsedType *Exceptions,
175 SourceRange *ExceptionRanges,
176 unsigned NumExceptions,
177 Expr *NoexceptExpr,
178 CachedTokens *ExceptionSpecTokens,
179 ArrayRef<NamedDecl*>
180 DeclsInPrototype,
181 SourceLocation LocalRangeBegin,
182 SourceLocation LocalRangeEnd,
183 Declarator &TheDeclarator,
184 TypeResult TrailingReturnType,
185 SourceLocation
186 TrailingReturnTypeLoc,
187 DeclSpec *MethodQualifiers) {
188 assert(!(MethodQualifiers && MethodQualifiers->getTypeQualifiers() & DeclSpec::TQ_atomic) &&
189 "function cannot have _Atomic qualifier");
190
191 DeclaratorChunk I;
192 I.Kind = Function;
193 I.Loc = LocalRangeBegin;
194 I.EndLoc = LocalRangeEnd;
195 new (&I.Fun) FunctionTypeInfo;
196 I.Fun.hasPrototype = hasProto;
197 I.Fun.isVariadic = EllipsisLoc.isValid();
198 I.Fun.isAmbiguous = isAmbiguous;
199 I.Fun.LParenLoc = LParenLoc;
200 I.Fun.EllipsisLoc = EllipsisLoc;
201 I.Fun.RParenLoc = RParenLoc;
202 I.Fun.DeleteParams = false;
203 I.Fun.NumParams = NumParams;
204 I.Fun.Params = nullptr;
205 I.Fun.RefQualifierIsLValueRef = RefQualifierIsLvalueRef;
206 I.Fun.RefQualifierLoc = RefQualifierLoc;
207 I.Fun.MutableLoc = MutableLoc;
208 I.Fun.ExceptionSpecType = ESpecType;
209 I.Fun.ExceptionSpecLocBeg = ESpecRange.getBegin();
210 I.Fun.ExceptionSpecLocEnd = ESpecRange.getEnd();
211 I.Fun.NumExceptionsOrDecls = 0;
212 I.Fun.Exceptions = nullptr;
213 I.Fun.NoexceptExpr = nullptr;
214 I.Fun.HasTrailingReturnType = TrailingReturnType.isUsable() ||
215 TrailingReturnType.isInvalid();
216 I.Fun.TrailingReturnType = TrailingReturnType.get();
217 I.Fun.TrailingReturnTypeLoc = TrailingReturnTypeLoc;
218 I.Fun.MethodQualifiers = nullptr;
219 I.Fun.QualAttrFactory = nullptr;
220
221 if (MethodQualifiers && (MethodQualifiers->getTypeQualifiers() ||
222 MethodQualifiers->getAttributes().size())) {
223 auto &attrs = MethodQualifiers->getAttributes();
224 I.Fun.MethodQualifiers = new DeclSpec(attrs.getPool().getFactory());
225 MethodQualifiers->forEachCVRUQualifier(
226 [&](DeclSpec::TQ TypeQual, StringRef PrintName, SourceLocation SL) {
227 I.Fun.MethodQualifiers->SetTypeQual(TypeQual, SL);
228 });
229 I.Fun.MethodQualifiers->getAttributes().takeAllFrom(attrs);
230 I.Fun.MethodQualifiers->getAttributePool().takeAllFrom(attrs.getPool());
231 }
232
233 assert(I.Fun.ExceptionSpecType == ESpecType && "bitfield overflow");
234
235 // new[] a parameter array if needed.
236 if (NumParams) {
237 // If the 'InlineParams' in Declarator is unused and big enough, put our
238 // parameter list there (in an effort to avoid new/delete traffic). If it
239 // is already used (consider a function returning a function pointer) or too
240 // small (function with too many parameters), go to the heap.
241 if (!TheDeclarator.InlineStorageUsed &&
242 NumParams <= std::size(TheDeclarator.InlineParams)) {
243 I.Fun.Params = TheDeclarator.InlineParams;
244 new (I.Fun.Params) ParamInfo[NumParams];
245 I.Fun.DeleteParams = false;
246 TheDeclarator.InlineStorageUsed = true;
247 } else {
248 I.Fun.Params = new DeclaratorChunk::ParamInfo[NumParams];
249 I.Fun.DeleteParams = true;
250 }
251 for (unsigned i = 0; i < NumParams; i++)
252 I.Fun.Params[i] = std::move(Params[i]);
253 }
254
255 // Check what exception specification information we should actually store.
256 switch (ESpecType) {
257 default: break; // By default, save nothing.
258 case EST_Dynamic:
259 // new[] an exception array if needed
260 if (NumExceptions) {
261 I.Fun.NumExceptionsOrDecls = NumExceptions;
262 I.Fun.Exceptions = new DeclaratorChunk::TypeAndRange[NumExceptions];
263 for (unsigned i = 0; i != NumExceptions; ++i) {
264 I.Fun.Exceptions[i].Ty = Exceptions[i];
265 I.Fun.Exceptions[i].Range = ExceptionRanges[i];
266 }
267 }
268 break;
269
270 case EST_DependentNoexcept:
271 case EST_NoexceptFalse:
272 case EST_NoexceptTrue:
273 I.Fun.NoexceptExpr = NoexceptExpr;
274 break;
275
276 case EST_Unparsed:
277 I.Fun.ExceptionSpecTokens = ExceptionSpecTokens;
278 break;
279 }
280
281 if (!DeclsInPrototype.empty()) {
282 assert(ESpecType == EST_None && NumExceptions == 0 &&
283 "cannot have exception specifiers and decls in prototype");
284 I.Fun.NumExceptionsOrDecls = DeclsInPrototype.size();
285 // Copy the array of decls into stable heap storage.
286 I.Fun.DeclsInPrototype = new NamedDecl *[DeclsInPrototype.size()];
287 for (size_t J = 0; J < DeclsInPrototype.size(); ++J)
288 I.Fun.DeclsInPrototype[J] = DeclsInPrototype[J];
289 }
290
291 return I;
292 }
293
setDecompositionBindings(SourceLocation LSquareLoc,ArrayRef<DecompositionDeclarator::Binding> Bindings,SourceLocation RSquareLoc)294 void Declarator::setDecompositionBindings(
295 SourceLocation LSquareLoc,
296 ArrayRef<DecompositionDeclarator::Binding> Bindings,
297 SourceLocation RSquareLoc) {
298 assert(!hasName() && "declarator given multiple names!");
299
300 BindingGroup.LSquareLoc = LSquareLoc;
301 BindingGroup.RSquareLoc = RSquareLoc;
302 BindingGroup.NumBindings = Bindings.size();
303 Range.setEnd(RSquareLoc);
304
305 // We're now past the identifier.
306 SetIdentifier(nullptr, LSquareLoc);
307 Name.EndLocation = RSquareLoc;
308
309 // Allocate storage for bindings and stash them away.
310 if (Bindings.size()) {
311 if (!InlineStorageUsed && Bindings.size() <= std::size(InlineBindings)) {
312 BindingGroup.Bindings = InlineBindings;
313 BindingGroup.DeleteBindings = false;
314 InlineStorageUsed = true;
315 } else {
316 BindingGroup.Bindings =
317 new DecompositionDeclarator::Binding[Bindings.size()];
318 BindingGroup.DeleteBindings = true;
319 }
320 std::uninitialized_copy(Bindings.begin(), Bindings.end(),
321 BindingGroup.Bindings);
322 }
323 }
324
isDeclarationOfFunction() const325 bool Declarator::isDeclarationOfFunction() const {
326 for (unsigned i = 0, i_end = DeclTypeInfo.size(); i < i_end; ++i) {
327 switch (DeclTypeInfo[i].Kind) {
328 case DeclaratorChunk::Function:
329 return true;
330 case DeclaratorChunk::Paren:
331 continue;
332 case DeclaratorChunk::Pointer:
333 case DeclaratorChunk::Reference:
334 case DeclaratorChunk::Array:
335 case DeclaratorChunk::BlockPointer:
336 case DeclaratorChunk::MemberPointer:
337 case DeclaratorChunk::Pipe:
338 return false;
339 }
340 llvm_unreachable("Invalid type chunk");
341 }
342
343 switch (DS.getTypeSpecType()) {
344 case TST_atomic:
345 case TST_auto:
346 case TST_auto_type:
347 case TST_bool:
348 case TST_char:
349 case TST_char8:
350 case TST_char16:
351 case TST_char32:
352 case TST_class:
353 case TST_decimal128:
354 case TST_decimal32:
355 case TST_decimal64:
356 case TST_double:
357 case TST_Accum:
358 case TST_Fract:
359 case TST_Float16:
360 case TST_float128:
361 case TST_ibm128:
362 case TST_enum:
363 case TST_error:
364 case TST_float:
365 case TST_half:
366 case TST_int:
367 case TST_int128:
368 case TST_bitint:
369 case TST_struct:
370 case TST_interface:
371 case TST_union:
372 case TST_unknown_anytype:
373 case TST_unspecified:
374 case TST_void:
375 case TST_wchar:
376 case TST_BFloat16:
377 #define GENERIC_IMAGE_TYPE(ImgType, Id) case TST_##ImgType##_t:
378 #include "clang/Basic/OpenCLImageTypes.def"
379 return false;
380
381 case TST_decltype_auto:
382 // This must have an initializer, so can't be a function declaration,
383 // even if the initializer has function type.
384 return false;
385
386 case TST_decltype:
387 case TST_typeof_unqualExpr:
388 case TST_typeofExpr:
389 if (Expr *E = DS.getRepAsExpr())
390 return E->getType()->isFunctionType();
391 return false;
392
393 #define TRANSFORM_TYPE_TRAIT_DEF(_, Trait) case TST_##Trait:
394 #include "clang/Basic/TransformTypeTraits.def"
395 case TST_typename:
396 case TST_typeof_unqualType:
397 case TST_typeofType: {
398 QualType QT = DS.getRepAsType().get();
399 if (QT.isNull())
400 return false;
401
402 if (const LocInfoType *LIT = dyn_cast<LocInfoType>(QT))
403 QT = LIT->getType();
404
405 if (QT.isNull())
406 return false;
407
408 return QT->isFunctionType();
409 }
410 }
411
412 llvm_unreachable("Invalid TypeSpecType!");
413 }
414
isStaticMember()415 bool Declarator::isStaticMember() {
416 assert(getContext() == DeclaratorContext::Member);
417 return getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static ||
418 (getName().getKind() == UnqualifiedIdKind::IK_OperatorFunctionId &&
419 CXXMethodDecl::isStaticOverloadedOperator(
420 getName().OperatorFunctionId.Operator));
421 }
422
isCtorOrDtor()423 bool Declarator::isCtorOrDtor() {
424 return (getName().getKind() == UnqualifiedIdKind::IK_ConstructorName) ||
425 (getName().getKind() == UnqualifiedIdKind::IK_DestructorName);
426 }
427
forEachCVRUQualifier(llvm::function_ref<void (TQ,StringRef,SourceLocation)> Handle)428 void DeclSpec::forEachCVRUQualifier(
429 llvm::function_ref<void(TQ, StringRef, SourceLocation)> Handle) {
430 if (TypeQualifiers & TQ_const)
431 Handle(TQ_const, "const", TQ_constLoc);
432 if (TypeQualifiers & TQ_volatile)
433 Handle(TQ_volatile, "volatile", TQ_volatileLoc);
434 if (TypeQualifiers & TQ_restrict)
435 Handle(TQ_restrict, "restrict", TQ_restrictLoc);
436 if (TypeQualifiers & TQ_unaligned)
437 Handle(TQ_unaligned, "unaligned", TQ_unalignedLoc);
438 }
439
forEachQualifier(llvm::function_ref<void (TQ,StringRef,SourceLocation)> Handle)440 void DeclSpec::forEachQualifier(
441 llvm::function_ref<void(TQ, StringRef, SourceLocation)> Handle) {
442 forEachCVRUQualifier(Handle);
443 // FIXME: Add code below to iterate through the attributes and call Handle.
444 }
445
hasTagDefinition() const446 bool DeclSpec::hasTagDefinition() const {
447 if (!TypeSpecOwned)
448 return false;
449 return cast<TagDecl>(getRepAsDecl())->isCompleteDefinition();
450 }
451
452 /// getParsedSpecifiers - Return a bitmask of which flavors of specifiers this
453 /// declaration specifier includes.
454 ///
getParsedSpecifiers() const455 unsigned DeclSpec::getParsedSpecifiers() const {
456 unsigned Res = 0;
457 if (StorageClassSpec != SCS_unspecified ||
458 ThreadStorageClassSpec != TSCS_unspecified)
459 Res |= PQ_StorageClassSpecifier;
460
461 if (TypeQualifiers != TQ_unspecified)
462 Res |= PQ_TypeQualifier;
463
464 if (hasTypeSpecifier())
465 Res |= PQ_TypeSpecifier;
466
467 if (FS_inline_specified || FS_virtual_specified || hasExplicitSpecifier() ||
468 FS_noreturn_specified || FS_forceinline_specified)
469 Res |= PQ_FunctionSpecifier;
470 return Res;
471 }
472
BadSpecifier(T TNew,T TPrev,const char * & PrevSpec,unsigned & DiagID,bool IsExtension=true)473 template <class T> static bool BadSpecifier(T TNew, T TPrev,
474 const char *&PrevSpec,
475 unsigned &DiagID,
476 bool IsExtension = true) {
477 PrevSpec = DeclSpec::getSpecifierName(TPrev);
478 if (TNew != TPrev)
479 DiagID = diag::err_invalid_decl_spec_combination;
480 else
481 DiagID = IsExtension ? diag::ext_warn_duplicate_declspec :
482 diag::warn_duplicate_declspec;
483 return true;
484 }
485
getSpecifierName(DeclSpec::SCS S)486 const char *DeclSpec::getSpecifierName(DeclSpec::SCS S) {
487 switch (S) {
488 case DeclSpec::SCS_unspecified: return "unspecified";
489 case DeclSpec::SCS_typedef: return "typedef";
490 case DeclSpec::SCS_extern: return "extern";
491 case DeclSpec::SCS_static: return "static";
492 case DeclSpec::SCS_auto: return "auto";
493 case DeclSpec::SCS_register: return "register";
494 case DeclSpec::SCS_private_extern: return "__private_extern__";
495 case DeclSpec::SCS_mutable: return "mutable";
496 }
497 llvm_unreachable("Unknown typespec!");
498 }
499
getSpecifierName(DeclSpec::TSCS S)500 const char *DeclSpec::getSpecifierName(DeclSpec::TSCS S) {
501 switch (S) {
502 case DeclSpec::TSCS_unspecified: return "unspecified";
503 case DeclSpec::TSCS___thread: return "__thread";
504 case DeclSpec::TSCS_thread_local: return "thread_local";
505 case DeclSpec::TSCS__Thread_local: return "_Thread_local";
506 }
507 llvm_unreachable("Unknown typespec!");
508 }
509
getSpecifierName(TypeSpecifierWidth W)510 const char *DeclSpec::getSpecifierName(TypeSpecifierWidth W) {
511 switch (W) {
512 case TypeSpecifierWidth::Unspecified:
513 return "unspecified";
514 case TypeSpecifierWidth::Short:
515 return "short";
516 case TypeSpecifierWidth::Long:
517 return "long";
518 case TypeSpecifierWidth::LongLong:
519 return "long long";
520 }
521 llvm_unreachable("Unknown typespec!");
522 }
523
getSpecifierName(TSC C)524 const char *DeclSpec::getSpecifierName(TSC C) {
525 switch (C) {
526 case TSC_unspecified: return "unspecified";
527 case TSC_imaginary: return "imaginary";
528 case TSC_complex: return "complex";
529 }
530 llvm_unreachable("Unknown typespec!");
531 }
532
getSpecifierName(TypeSpecifierSign S)533 const char *DeclSpec::getSpecifierName(TypeSpecifierSign S) {
534 switch (S) {
535 case TypeSpecifierSign::Unspecified:
536 return "unspecified";
537 case TypeSpecifierSign::Signed:
538 return "signed";
539 case TypeSpecifierSign::Unsigned:
540 return "unsigned";
541 }
542 llvm_unreachable("Unknown typespec!");
543 }
544
getSpecifierName(DeclSpec::TST T,const PrintingPolicy & Policy)545 const char *DeclSpec::getSpecifierName(DeclSpec::TST T,
546 const PrintingPolicy &Policy) {
547 switch (T) {
548 case DeclSpec::TST_unspecified: return "unspecified";
549 case DeclSpec::TST_void: return "void";
550 case DeclSpec::TST_char: return "char";
551 case DeclSpec::TST_wchar: return Policy.MSWChar ? "__wchar_t" : "wchar_t";
552 case DeclSpec::TST_char8: return "char8_t";
553 case DeclSpec::TST_char16: return "char16_t";
554 case DeclSpec::TST_char32: return "char32_t";
555 case DeclSpec::TST_int: return "int";
556 case DeclSpec::TST_int128: return "__int128";
557 case DeclSpec::TST_bitint: return "_BitInt";
558 case DeclSpec::TST_half: return "half";
559 case DeclSpec::TST_float: return "float";
560 case DeclSpec::TST_double: return "double";
561 case DeclSpec::TST_accum: return "_Accum";
562 case DeclSpec::TST_fract: return "_Fract";
563 case DeclSpec::TST_float16: return "_Float16";
564 case DeclSpec::TST_float128: return "__float128";
565 case DeclSpec::TST_ibm128: return "__ibm128";
566 case DeclSpec::TST_bool: return Policy.Bool ? "bool" : "_Bool";
567 case DeclSpec::TST_decimal32: return "_Decimal32";
568 case DeclSpec::TST_decimal64: return "_Decimal64";
569 case DeclSpec::TST_decimal128: return "_Decimal128";
570 case DeclSpec::TST_enum: return "enum";
571 case DeclSpec::TST_class: return "class";
572 case DeclSpec::TST_union: return "union";
573 case DeclSpec::TST_struct: return "struct";
574 case DeclSpec::TST_interface: return "__interface";
575 case DeclSpec::TST_typename: return "type-name";
576 case DeclSpec::TST_typeofType:
577 case DeclSpec::TST_typeofExpr: return "typeof";
578 case DeclSpec::TST_typeof_unqualType:
579 case DeclSpec::TST_typeof_unqualExpr: return "typeof_unqual";
580 case DeclSpec::TST_auto: return "auto";
581 case DeclSpec::TST_auto_type: return "__auto_type";
582 case DeclSpec::TST_decltype: return "(decltype)";
583 case DeclSpec::TST_decltype_auto: return "decltype(auto)";
584 #define TRANSFORM_TYPE_TRAIT_DEF(_, Trait) \
585 case DeclSpec::TST_##Trait: \
586 return "__" #Trait;
587 #include "clang/Basic/TransformTypeTraits.def"
588 case DeclSpec::TST_unknown_anytype: return "__unknown_anytype";
589 case DeclSpec::TST_atomic: return "_Atomic";
590 case DeclSpec::TST_BFloat16: return "__bf16";
591 #define GENERIC_IMAGE_TYPE(ImgType, Id) \
592 case DeclSpec::TST_##ImgType##_t: \
593 return #ImgType "_t";
594 #include "clang/Basic/OpenCLImageTypes.def"
595 case DeclSpec::TST_error: return "(error)";
596 }
597 llvm_unreachable("Unknown typespec!");
598 }
599
getSpecifierName(ConstexprSpecKind C)600 const char *DeclSpec::getSpecifierName(ConstexprSpecKind C) {
601 switch (C) {
602 case ConstexprSpecKind::Unspecified:
603 return "unspecified";
604 case ConstexprSpecKind::Constexpr:
605 return "constexpr";
606 case ConstexprSpecKind::Consteval:
607 return "consteval";
608 case ConstexprSpecKind::Constinit:
609 return "constinit";
610 }
611 llvm_unreachable("Unknown ConstexprSpecKind");
612 }
613
getSpecifierName(TQ T)614 const char *DeclSpec::getSpecifierName(TQ T) {
615 switch (T) {
616 case DeclSpec::TQ_unspecified: return "unspecified";
617 case DeclSpec::TQ_const: return "const";
618 case DeclSpec::TQ_restrict: return "restrict";
619 case DeclSpec::TQ_volatile: return "volatile";
620 case DeclSpec::TQ_atomic: return "_Atomic";
621 case DeclSpec::TQ_unaligned: return "__unaligned";
622 }
623 llvm_unreachable("Unknown typespec!");
624 }
625
SetStorageClassSpec(Sema & S,SCS SC,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID,const PrintingPolicy & Policy)626 bool DeclSpec::SetStorageClassSpec(Sema &S, SCS SC, SourceLocation Loc,
627 const char *&PrevSpec,
628 unsigned &DiagID,
629 const PrintingPolicy &Policy) {
630 // OpenCL v1.1 s6.8g: "The extern, static, auto and register storage-class
631 // specifiers are not supported.
632 // It seems sensible to prohibit private_extern too
633 // The cl_clang_storage_class_specifiers extension enables support for
634 // these storage-class specifiers.
635 // OpenCL v1.2 s6.8 changes this to "The auto and register storage-class
636 // specifiers are not supported."
637 if (S.getLangOpts().OpenCL &&
638 !S.getOpenCLOptions().isAvailableOption(
639 "cl_clang_storage_class_specifiers", S.getLangOpts())) {
640 switch (SC) {
641 case SCS_extern:
642 case SCS_private_extern:
643 case SCS_static:
644 if (S.getLangOpts().getOpenCLCompatibleVersion() < 120) {
645 DiagID = diag::err_opencl_unknown_type_specifier;
646 PrevSpec = getSpecifierName(SC);
647 return true;
648 }
649 break;
650 case SCS_auto:
651 case SCS_register:
652 DiagID = diag::err_opencl_unknown_type_specifier;
653 PrevSpec = getSpecifierName(SC);
654 return true;
655 default:
656 break;
657 }
658 }
659
660 if (StorageClassSpec != SCS_unspecified) {
661 // Maybe this is an attempt to use C++11 'auto' outside of C++11 mode.
662 bool isInvalid = true;
663 if (TypeSpecType == TST_unspecified && S.getLangOpts().CPlusPlus) {
664 if (SC == SCS_auto)
665 return SetTypeSpecType(TST_auto, Loc, PrevSpec, DiagID, Policy);
666 if (StorageClassSpec == SCS_auto) {
667 isInvalid = SetTypeSpecType(TST_auto, StorageClassSpecLoc,
668 PrevSpec, DiagID, Policy);
669 assert(!isInvalid && "auto SCS -> TST recovery failed");
670 }
671 }
672
673 // Changing storage class is allowed only if the previous one
674 // was the 'extern' that is part of a linkage specification and
675 // the new storage class is 'typedef'.
676 if (isInvalid &&
677 !(SCS_extern_in_linkage_spec &&
678 StorageClassSpec == SCS_extern &&
679 SC == SCS_typedef))
680 return BadSpecifier(SC, (SCS)StorageClassSpec, PrevSpec, DiagID);
681 }
682 StorageClassSpec = SC;
683 StorageClassSpecLoc = Loc;
684 assert((unsigned)SC == StorageClassSpec && "SCS constants overflow bitfield");
685 return false;
686 }
687
SetStorageClassSpecThread(TSCS TSC,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID)688 bool DeclSpec::SetStorageClassSpecThread(TSCS TSC, SourceLocation Loc,
689 const char *&PrevSpec,
690 unsigned &DiagID) {
691 if (ThreadStorageClassSpec != TSCS_unspecified)
692 return BadSpecifier(TSC, (TSCS)ThreadStorageClassSpec, PrevSpec, DiagID);
693
694 ThreadStorageClassSpec = TSC;
695 ThreadStorageClassSpecLoc = Loc;
696 return false;
697 }
698
699 /// These methods set the specified attribute of the DeclSpec, but return true
700 /// and ignore the request if invalid (e.g. "extern" then "auto" is
701 /// specified).
SetTypeSpecWidth(TypeSpecifierWidth W,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID,const PrintingPolicy & Policy)702 bool DeclSpec::SetTypeSpecWidth(TypeSpecifierWidth W, SourceLocation Loc,
703 const char *&PrevSpec, unsigned &DiagID,
704 const PrintingPolicy &Policy) {
705 // Overwrite TSWRange.Begin only if TypeSpecWidth was unspecified, so that
706 // for 'long long' we will keep the source location of the first 'long'.
707 if (getTypeSpecWidth() == TypeSpecifierWidth::Unspecified)
708 TSWRange.setBegin(Loc);
709 // Allow turning long -> long long.
710 else if (W != TypeSpecifierWidth::LongLong ||
711 getTypeSpecWidth() != TypeSpecifierWidth::Long)
712 return BadSpecifier(W, getTypeSpecWidth(), PrevSpec, DiagID);
713 TypeSpecWidth = static_cast<unsigned>(W);
714 // Remember location of the last 'long'
715 TSWRange.setEnd(Loc);
716 return false;
717 }
718
SetTypeSpecComplex(TSC C,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID)719 bool DeclSpec::SetTypeSpecComplex(TSC C, SourceLocation Loc,
720 const char *&PrevSpec,
721 unsigned &DiagID) {
722 if (TypeSpecComplex != TSC_unspecified)
723 return BadSpecifier(C, (TSC)TypeSpecComplex, PrevSpec, DiagID);
724 TypeSpecComplex = C;
725 TSCLoc = Loc;
726 return false;
727 }
728
SetTypeSpecSign(TypeSpecifierSign S,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID)729 bool DeclSpec::SetTypeSpecSign(TypeSpecifierSign S, SourceLocation Loc,
730 const char *&PrevSpec, unsigned &DiagID) {
731 if (getTypeSpecSign() != TypeSpecifierSign::Unspecified)
732 return BadSpecifier(S, getTypeSpecSign(), PrevSpec, DiagID);
733 TypeSpecSign = static_cast<unsigned>(S);
734 TSSLoc = Loc;
735 return false;
736 }
737
SetTypeSpecType(TST T,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID,ParsedType Rep,const PrintingPolicy & Policy)738 bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc,
739 const char *&PrevSpec,
740 unsigned &DiagID,
741 ParsedType Rep,
742 const PrintingPolicy &Policy) {
743 return SetTypeSpecType(T, Loc, Loc, PrevSpec, DiagID, Rep, Policy);
744 }
745
SetTypeSpecType(TST T,SourceLocation TagKwLoc,SourceLocation TagNameLoc,const char * & PrevSpec,unsigned & DiagID,ParsedType Rep,const PrintingPolicy & Policy)746 bool DeclSpec::SetTypeSpecType(TST T, SourceLocation TagKwLoc,
747 SourceLocation TagNameLoc,
748 const char *&PrevSpec,
749 unsigned &DiagID,
750 ParsedType Rep,
751 const PrintingPolicy &Policy) {
752 assert(isTypeRep(T) && "T does not store a type");
753 assert(Rep && "no type provided!");
754 if (TypeSpecType == TST_error)
755 return false;
756 if (TypeSpecType != TST_unspecified) {
757 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType, Policy);
758 DiagID = diag::err_invalid_decl_spec_combination;
759 return true;
760 }
761 TypeSpecType = T;
762 TypeRep = Rep;
763 TSTLoc = TagKwLoc;
764 TSTNameLoc = TagNameLoc;
765 TypeSpecOwned = false;
766 return false;
767 }
768
SetTypeSpecType(TST T,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID,Expr * Rep,const PrintingPolicy & Policy)769 bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc,
770 const char *&PrevSpec,
771 unsigned &DiagID,
772 Expr *Rep,
773 const PrintingPolicy &Policy) {
774 assert(isExprRep(T) && "T does not store an expr");
775 assert(Rep && "no expression provided!");
776 if (TypeSpecType == TST_error)
777 return false;
778 if (TypeSpecType != TST_unspecified) {
779 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType, Policy);
780 DiagID = diag::err_invalid_decl_spec_combination;
781 return true;
782 }
783 TypeSpecType = T;
784 ExprRep = Rep;
785 TSTLoc = Loc;
786 TSTNameLoc = Loc;
787 TypeSpecOwned = false;
788 return false;
789 }
790
SetTypeSpecType(TST T,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID,Decl * Rep,bool Owned,const PrintingPolicy & Policy)791 bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc,
792 const char *&PrevSpec,
793 unsigned &DiagID,
794 Decl *Rep, bool Owned,
795 const PrintingPolicy &Policy) {
796 return SetTypeSpecType(T, Loc, Loc, PrevSpec, DiagID, Rep, Owned, Policy);
797 }
798
SetTypeSpecType(TST T,SourceLocation TagKwLoc,SourceLocation TagNameLoc,const char * & PrevSpec,unsigned & DiagID,Decl * Rep,bool Owned,const PrintingPolicy & Policy)799 bool DeclSpec::SetTypeSpecType(TST T, SourceLocation TagKwLoc,
800 SourceLocation TagNameLoc,
801 const char *&PrevSpec,
802 unsigned &DiagID,
803 Decl *Rep, bool Owned,
804 const PrintingPolicy &Policy) {
805 assert(isDeclRep(T) && "T does not store a decl");
806 // Unlike the other cases, we don't assert that we actually get a decl.
807
808 if (TypeSpecType == TST_error)
809 return false;
810 if (TypeSpecType != TST_unspecified) {
811 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType, Policy);
812 DiagID = diag::err_invalid_decl_spec_combination;
813 return true;
814 }
815 TypeSpecType = T;
816 DeclRep = Rep;
817 TSTLoc = TagKwLoc;
818 TSTNameLoc = TagNameLoc;
819 TypeSpecOwned = Owned && Rep != nullptr;
820 return false;
821 }
822
SetTypeSpecType(TST T,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID,TemplateIdAnnotation * Rep,const PrintingPolicy & Policy)823 bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc, const char *&PrevSpec,
824 unsigned &DiagID, TemplateIdAnnotation *Rep,
825 const PrintingPolicy &Policy) {
826 assert(T == TST_auto || T == TST_decltype_auto);
827 ConstrainedAuto = true;
828 TemplateIdRep = Rep;
829 return SetTypeSpecType(T, Loc, PrevSpec, DiagID, Policy);
830 }
831
SetTypeSpecType(TST T,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID,const PrintingPolicy & Policy)832 bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc,
833 const char *&PrevSpec,
834 unsigned &DiagID,
835 const PrintingPolicy &Policy) {
836 assert(!isDeclRep(T) && !isTypeRep(T) && !isExprRep(T) &&
837 "rep required for these type-spec kinds!");
838 if (TypeSpecType == TST_error)
839 return false;
840 if (TypeSpecType != TST_unspecified) {
841 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType, Policy);
842 DiagID = diag::err_invalid_decl_spec_combination;
843 return true;
844 }
845 TSTLoc = Loc;
846 TSTNameLoc = Loc;
847 if (TypeAltiVecVector && (T == TST_bool) && !TypeAltiVecBool) {
848 TypeAltiVecBool = true;
849 return false;
850 }
851 TypeSpecType = T;
852 TypeSpecOwned = false;
853 return false;
854 }
855
SetTypeSpecSat(SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID)856 bool DeclSpec::SetTypeSpecSat(SourceLocation Loc, const char *&PrevSpec,
857 unsigned &DiagID) {
858 // Cannot set twice
859 if (TypeSpecSat) {
860 DiagID = diag::warn_duplicate_declspec;
861 PrevSpec = "_Sat";
862 return true;
863 }
864 TypeSpecSat = true;
865 TSSatLoc = Loc;
866 return false;
867 }
868
SetTypeAltiVecVector(bool isAltiVecVector,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID,const PrintingPolicy & Policy)869 bool DeclSpec::SetTypeAltiVecVector(bool isAltiVecVector, SourceLocation Loc,
870 const char *&PrevSpec, unsigned &DiagID,
871 const PrintingPolicy &Policy) {
872 if (TypeSpecType == TST_error)
873 return false;
874 if (TypeSpecType != TST_unspecified) {
875 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType, Policy);
876 DiagID = diag::err_invalid_vector_decl_spec_combination;
877 return true;
878 }
879 TypeAltiVecVector = isAltiVecVector;
880 AltiVecLoc = Loc;
881 return false;
882 }
883
SetTypePipe(bool isPipe,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID,const PrintingPolicy & Policy)884 bool DeclSpec::SetTypePipe(bool isPipe, SourceLocation Loc,
885 const char *&PrevSpec, unsigned &DiagID,
886 const PrintingPolicy &Policy) {
887 if (TypeSpecType == TST_error)
888 return false;
889 if (TypeSpecType != TST_unspecified) {
890 PrevSpec = DeclSpec::getSpecifierName((TST)TypeSpecType, Policy);
891 DiagID = diag::err_invalid_decl_spec_combination;
892 return true;
893 }
894
895 if (isPipe) {
896 TypeSpecPipe = static_cast<unsigned>(TypeSpecifiersPipe::Pipe);
897 }
898 return false;
899 }
900
SetTypeAltiVecPixel(bool isAltiVecPixel,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID,const PrintingPolicy & Policy)901 bool DeclSpec::SetTypeAltiVecPixel(bool isAltiVecPixel, SourceLocation Loc,
902 const char *&PrevSpec, unsigned &DiagID,
903 const PrintingPolicy &Policy) {
904 if (TypeSpecType == TST_error)
905 return false;
906 if (!TypeAltiVecVector || TypeAltiVecPixel ||
907 (TypeSpecType != TST_unspecified)) {
908 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType, Policy);
909 DiagID = diag::err_invalid_pixel_decl_spec_combination;
910 return true;
911 }
912 TypeAltiVecPixel = isAltiVecPixel;
913 TSTLoc = Loc;
914 TSTNameLoc = Loc;
915 return false;
916 }
917
SetTypeAltiVecBool(bool isAltiVecBool,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID,const PrintingPolicy & Policy)918 bool DeclSpec::SetTypeAltiVecBool(bool isAltiVecBool, SourceLocation Loc,
919 const char *&PrevSpec, unsigned &DiagID,
920 const PrintingPolicy &Policy) {
921 if (TypeSpecType == TST_error)
922 return false;
923 if (!TypeAltiVecVector || TypeAltiVecBool ||
924 (TypeSpecType != TST_unspecified)) {
925 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType, Policy);
926 DiagID = diag::err_invalid_vector_bool_decl_spec;
927 return true;
928 }
929 TypeAltiVecBool = isAltiVecBool;
930 TSTLoc = Loc;
931 TSTNameLoc = Loc;
932 return false;
933 }
934
SetTypeSpecError()935 bool DeclSpec::SetTypeSpecError() {
936 TypeSpecType = TST_error;
937 TypeSpecOwned = false;
938 TSTLoc = SourceLocation();
939 TSTNameLoc = SourceLocation();
940 return false;
941 }
942
SetBitIntType(SourceLocation KWLoc,Expr * BitsExpr,const char * & PrevSpec,unsigned & DiagID,const PrintingPolicy & Policy)943 bool DeclSpec::SetBitIntType(SourceLocation KWLoc, Expr *BitsExpr,
944 const char *&PrevSpec, unsigned &DiagID,
945 const PrintingPolicy &Policy) {
946 assert(BitsExpr && "no expression provided!");
947 if (TypeSpecType == TST_error)
948 return false;
949
950 if (TypeSpecType != TST_unspecified) {
951 PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType, Policy);
952 DiagID = diag::err_invalid_decl_spec_combination;
953 return true;
954 }
955
956 TypeSpecType = TST_bitint;
957 ExprRep = BitsExpr;
958 TSTLoc = KWLoc;
959 TSTNameLoc = KWLoc;
960 TypeSpecOwned = false;
961 return false;
962 }
963
SetTypeQual(TQ T,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID,const LangOptions & Lang)964 bool DeclSpec::SetTypeQual(TQ T, SourceLocation Loc, const char *&PrevSpec,
965 unsigned &DiagID, const LangOptions &Lang) {
966 // Duplicates are permitted in C99 onwards, but are not permitted in C89 or
967 // C++. However, since this is likely not what the user intended, we will
968 // always warn. We do not need to set the qualifier's location since we
969 // already have it.
970 if (TypeQualifiers & T) {
971 bool IsExtension = true;
972 if (Lang.C99)
973 IsExtension = false;
974 return BadSpecifier(T, T, PrevSpec, DiagID, IsExtension);
975 }
976
977 return SetTypeQual(T, Loc);
978 }
979
SetTypeQual(TQ T,SourceLocation Loc)980 bool DeclSpec::SetTypeQual(TQ T, SourceLocation Loc) {
981 TypeQualifiers |= T;
982
983 switch (T) {
984 case TQ_unspecified: break;
985 case TQ_const: TQ_constLoc = Loc; return false;
986 case TQ_restrict: TQ_restrictLoc = Loc; return false;
987 case TQ_volatile: TQ_volatileLoc = Loc; return false;
988 case TQ_unaligned: TQ_unalignedLoc = Loc; return false;
989 case TQ_atomic: TQ_atomicLoc = Loc; return false;
990 }
991
992 llvm_unreachable("Unknown type qualifier!");
993 }
994
setFunctionSpecInline(SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID)995 bool DeclSpec::setFunctionSpecInline(SourceLocation Loc, const char *&PrevSpec,
996 unsigned &DiagID) {
997 // 'inline inline' is ok. However, since this is likely not what the user
998 // intended, we will always warn, similar to duplicates of type qualifiers.
999 if (FS_inline_specified) {
1000 DiagID = diag::warn_duplicate_declspec;
1001 PrevSpec = "inline";
1002 return true;
1003 }
1004 FS_inline_specified = true;
1005 FS_inlineLoc = Loc;
1006 return false;
1007 }
1008
setFunctionSpecForceInline(SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID)1009 bool DeclSpec::setFunctionSpecForceInline(SourceLocation Loc, const char *&PrevSpec,
1010 unsigned &DiagID) {
1011 if (FS_forceinline_specified) {
1012 DiagID = diag::warn_duplicate_declspec;
1013 PrevSpec = "__forceinline";
1014 return true;
1015 }
1016 FS_forceinline_specified = true;
1017 FS_forceinlineLoc = Loc;
1018 return false;
1019 }
1020
setFunctionSpecVirtual(SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID)1021 bool DeclSpec::setFunctionSpecVirtual(SourceLocation Loc,
1022 const char *&PrevSpec,
1023 unsigned &DiagID) {
1024 // 'virtual virtual' is ok, but warn as this is likely not what the user
1025 // intended.
1026 if (FS_virtual_specified) {
1027 DiagID = diag::warn_duplicate_declspec;
1028 PrevSpec = "virtual";
1029 return true;
1030 }
1031 FS_virtual_specified = true;
1032 FS_virtualLoc = Loc;
1033 return false;
1034 }
1035
setFunctionSpecExplicit(SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID,ExplicitSpecifier ExplicitSpec,SourceLocation CloseParenLoc)1036 bool DeclSpec::setFunctionSpecExplicit(SourceLocation Loc,
1037 const char *&PrevSpec, unsigned &DiagID,
1038 ExplicitSpecifier ExplicitSpec,
1039 SourceLocation CloseParenLoc) {
1040 // 'explicit explicit' is ok, but warn as this is likely not what the user
1041 // intended.
1042 if (hasExplicitSpecifier()) {
1043 DiagID = (ExplicitSpec.getExpr() || FS_explicit_specifier.getExpr())
1044 ? diag::err_duplicate_declspec
1045 : diag::ext_warn_duplicate_declspec;
1046 PrevSpec = "explicit";
1047 return true;
1048 }
1049 FS_explicit_specifier = ExplicitSpec;
1050 FS_explicitLoc = Loc;
1051 FS_explicitCloseParenLoc = CloseParenLoc;
1052 return false;
1053 }
1054
setFunctionSpecNoreturn(SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID)1055 bool DeclSpec::setFunctionSpecNoreturn(SourceLocation Loc,
1056 const char *&PrevSpec,
1057 unsigned &DiagID) {
1058 // '_Noreturn _Noreturn' is ok, but warn as this is likely not what the user
1059 // intended.
1060 if (FS_noreturn_specified) {
1061 DiagID = diag::warn_duplicate_declspec;
1062 PrevSpec = "_Noreturn";
1063 return true;
1064 }
1065 FS_noreturn_specified = true;
1066 FS_noreturnLoc = Loc;
1067 return false;
1068 }
1069
SetFriendSpec(SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID)1070 bool DeclSpec::SetFriendSpec(SourceLocation Loc, const char *&PrevSpec,
1071 unsigned &DiagID) {
1072 if (Friend_specified) {
1073 PrevSpec = "friend";
1074 // Keep the later location, so that we can later diagnose ill-formed
1075 // declarations like 'friend class X friend;'. Per [class.friend]p3,
1076 // 'friend' must be the first token in a friend declaration that is
1077 // not a function declaration.
1078 FriendLoc = Loc;
1079 DiagID = diag::warn_duplicate_declspec;
1080 return true;
1081 }
1082
1083 Friend_specified = true;
1084 FriendLoc = Loc;
1085 return false;
1086 }
1087
setModulePrivateSpec(SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID)1088 bool DeclSpec::setModulePrivateSpec(SourceLocation Loc, const char *&PrevSpec,
1089 unsigned &DiagID) {
1090 if (isModulePrivateSpecified()) {
1091 PrevSpec = "__module_private__";
1092 DiagID = diag::ext_warn_duplicate_declspec;
1093 return true;
1094 }
1095
1096 ModulePrivateLoc = Loc;
1097 return false;
1098 }
1099
SetConstexprSpec(ConstexprSpecKind ConstexprKind,SourceLocation Loc,const char * & PrevSpec,unsigned & DiagID)1100 bool DeclSpec::SetConstexprSpec(ConstexprSpecKind ConstexprKind,
1101 SourceLocation Loc, const char *&PrevSpec,
1102 unsigned &DiagID) {
1103 if (getConstexprSpecifier() != ConstexprSpecKind::Unspecified)
1104 return BadSpecifier(ConstexprKind, getConstexprSpecifier(), PrevSpec,
1105 DiagID);
1106 ConstexprSpecifier = static_cast<unsigned>(ConstexprKind);
1107 ConstexprLoc = Loc;
1108 return false;
1109 }
1110
SaveWrittenBuiltinSpecs()1111 void DeclSpec::SaveWrittenBuiltinSpecs() {
1112 writtenBS.Sign = static_cast<int>(getTypeSpecSign());
1113 writtenBS.Width = static_cast<int>(getTypeSpecWidth());
1114 writtenBS.Type = getTypeSpecType();
1115 // Search the list of attributes for the presence of a mode attribute.
1116 writtenBS.ModeAttr = getAttributes().hasAttribute(ParsedAttr::AT_Mode);
1117 }
1118
1119 /// Finish - This does final analysis of the declspec, rejecting things like
1120 /// "_Imaginary" (lacking an FP type). After calling this method, DeclSpec is
1121 /// guaranteed to be self-consistent, even if an error occurred.
Finish(Sema & S,const PrintingPolicy & Policy)1122 void DeclSpec::Finish(Sema &S, const PrintingPolicy &Policy) {
1123 // Before possibly changing their values, save specs as written.
1124 SaveWrittenBuiltinSpecs();
1125
1126 // Check the type specifier components first. No checking for an invalid
1127 // type.
1128 if (TypeSpecType == TST_error)
1129 return;
1130
1131 // If decltype(auto) is used, no other type specifiers are permitted.
1132 if (TypeSpecType == TST_decltype_auto &&
1133 (getTypeSpecWidth() != TypeSpecifierWidth::Unspecified ||
1134 TypeSpecComplex != TSC_unspecified ||
1135 getTypeSpecSign() != TypeSpecifierSign::Unspecified ||
1136 TypeAltiVecVector || TypeAltiVecPixel || TypeAltiVecBool ||
1137 TypeQualifiers)) {
1138 const unsigned NumLocs = 9;
1139 SourceLocation ExtraLocs[NumLocs] = {
1140 TSWRange.getBegin(), TSCLoc, TSSLoc,
1141 AltiVecLoc, TQ_constLoc, TQ_restrictLoc,
1142 TQ_volatileLoc, TQ_atomicLoc, TQ_unalignedLoc};
1143 FixItHint Hints[NumLocs];
1144 SourceLocation FirstLoc;
1145 for (unsigned I = 0; I != NumLocs; ++I) {
1146 if (ExtraLocs[I].isValid()) {
1147 if (FirstLoc.isInvalid() ||
1148 S.getSourceManager().isBeforeInTranslationUnit(ExtraLocs[I],
1149 FirstLoc))
1150 FirstLoc = ExtraLocs[I];
1151 Hints[I] = FixItHint::CreateRemoval(ExtraLocs[I]);
1152 }
1153 }
1154 TypeSpecWidth = static_cast<unsigned>(TypeSpecifierWidth::Unspecified);
1155 TypeSpecComplex = TSC_unspecified;
1156 TypeSpecSign = static_cast<unsigned>(TypeSpecifierSign::Unspecified);
1157 TypeAltiVecVector = TypeAltiVecPixel = TypeAltiVecBool = false;
1158 TypeQualifiers = 0;
1159 S.Diag(TSTLoc, diag::err_decltype_auto_cannot_be_combined)
1160 << Hints[0] << Hints[1] << Hints[2] << Hints[3]
1161 << Hints[4] << Hints[5] << Hints[6] << Hints[7];
1162 }
1163
1164 // Validate and finalize AltiVec vector declspec.
1165 if (TypeAltiVecVector) {
1166 // No vector long long without VSX (or ZVector).
1167 if ((getTypeSpecWidth() == TypeSpecifierWidth::LongLong) &&
1168 !S.Context.getTargetInfo().hasFeature("vsx") &&
1169 !S.getLangOpts().ZVector)
1170 S.Diag(TSWRange.getBegin(), diag::err_invalid_vector_long_long_decl_spec);
1171
1172 // No vector __int128 prior to Power8.
1173 if ((TypeSpecType == TST_int128) &&
1174 !S.Context.getTargetInfo().hasFeature("power8-vector"))
1175 S.Diag(TSTLoc, diag::err_invalid_vector_int128_decl_spec);
1176
1177 if (TypeAltiVecBool) {
1178 // Sign specifiers are not allowed with vector bool. (PIM 2.1)
1179 if (getTypeSpecSign() != TypeSpecifierSign::Unspecified) {
1180 S.Diag(TSSLoc, diag::err_invalid_vector_bool_decl_spec)
1181 << getSpecifierName(getTypeSpecSign());
1182 }
1183 // Only char/int are valid with vector bool prior to Power10.
1184 // Power10 adds instructions that produce vector bool data
1185 // for quadwords as well so allow vector bool __int128.
1186 if (((TypeSpecType != TST_unspecified) && (TypeSpecType != TST_char) &&
1187 (TypeSpecType != TST_int) && (TypeSpecType != TST_int128)) ||
1188 TypeAltiVecPixel) {
1189 S.Diag(TSTLoc, diag::err_invalid_vector_bool_decl_spec)
1190 << (TypeAltiVecPixel ? "__pixel" :
1191 getSpecifierName((TST)TypeSpecType, Policy));
1192 }
1193 // vector bool __int128 requires Power10.
1194 if ((TypeSpecType == TST_int128) &&
1195 (!S.Context.getTargetInfo().hasFeature("power10-vector")))
1196 S.Diag(TSTLoc, diag::err_invalid_vector_bool_int128_decl_spec);
1197
1198 // Only 'short' and 'long long' are valid with vector bool. (PIM 2.1)
1199 if ((getTypeSpecWidth() != TypeSpecifierWidth::Unspecified) &&
1200 (getTypeSpecWidth() != TypeSpecifierWidth::Short) &&
1201 (getTypeSpecWidth() != TypeSpecifierWidth::LongLong))
1202 S.Diag(TSWRange.getBegin(), diag::err_invalid_vector_bool_decl_spec)
1203 << getSpecifierName(getTypeSpecWidth());
1204
1205 // Elements of vector bool are interpreted as unsigned. (PIM 2.1)
1206 if ((TypeSpecType == TST_char) || (TypeSpecType == TST_int) ||
1207 (TypeSpecType == TST_int128) ||
1208 (getTypeSpecWidth() != TypeSpecifierWidth::Unspecified))
1209 TypeSpecSign = static_cast<unsigned>(TypeSpecifierSign::Unsigned);
1210 } else if (TypeSpecType == TST_double) {
1211 // vector long double and vector long long double are never allowed.
1212 // vector double is OK for Power7 and later, and ZVector.
1213 if (getTypeSpecWidth() == TypeSpecifierWidth::Long ||
1214 getTypeSpecWidth() == TypeSpecifierWidth::LongLong)
1215 S.Diag(TSWRange.getBegin(),
1216 diag::err_invalid_vector_long_double_decl_spec);
1217 else if (!S.Context.getTargetInfo().hasFeature("vsx") &&
1218 !S.getLangOpts().ZVector)
1219 S.Diag(TSTLoc, diag::err_invalid_vector_double_decl_spec);
1220 } else if (TypeSpecType == TST_float) {
1221 // vector float is unsupported for ZVector unless we have the
1222 // vector-enhancements facility 1 (ISA revision 12).
1223 if (S.getLangOpts().ZVector &&
1224 !S.Context.getTargetInfo().hasFeature("arch12"))
1225 S.Diag(TSTLoc, diag::err_invalid_vector_float_decl_spec);
1226 } else if (getTypeSpecWidth() == TypeSpecifierWidth::Long) {
1227 // Vector long is unsupported for ZVector, or without VSX, and deprecated
1228 // for AltiVec.
1229 // It has also been historically deprecated on AIX (as an alias for
1230 // "vector int" in both 32-bit and 64-bit modes). It was then made
1231 // unsupported in the Clang-based XL compiler since the deprecated type
1232 // has a number of conflicting semantics and continuing to support it
1233 // is a disservice to users.
1234 if (S.getLangOpts().ZVector ||
1235 !S.Context.getTargetInfo().hasFeature("vsx") ||
1236 S.Context.getTargetInfo().getTriple().isOSAIX())
1237 S.Diag(TSWRange.getBegin(), diag::err_invalid_vector_long_decl_spec);
1238 else
1239 S.Diag(TSWRange.getBegin(),
1240 diag::warn_vector_long_decl_spec_combination)
1241 << getSpecifierName((TST)TypeSpecType, Policy);
1242 }
1243
1244 if (TypeAltiVecPixel) {
1245 //TODO: perform validation
1246 TypeSpecType = TST_int;
1247 TypeSpecSign = static_cast<unsigned>(TypeSpecifierSign::Unsigned);
1248 TypeSpecWidth = static_cast<unsigned>(TypeSpecifierWidth::Short);
1249 TypeSpecOwned = false;
1250 }
1251 }
1252
1253 bool IsFixedPointType =
1254 TypeSpecType == TST_accum || TypeSpecType == TST_fract;
1255
1256 // signed/unsigned are only valid with int/char/wchar_t/_Accum.
1257 if (getTypeSpecSign() != TypeSpecifierSign::Unspecified) {
1258 if (TypeSpecType == TST_unspecified)
1259 TypeSpecType = TST_int; // unsigned -> unsigned int, signed -> signed int.
1260 else if (TypeSpecType != TST_int && TypeSpecType != TST_int128 &&
1261 TypeSpecType != TST_char && TypeSpecType != TST_wchar &&
1262 !IsFixedPointType && TypeSpecType != TST_bitint) {
1263 S.Diag(TSSLoc, diag::err_invalid_sign_spec)
1264 << getSpecifierName((TST)TypeSpecType, Policy);
1265 // signed double -> double.
1266 TypeSpecSign = static_cast<unsigned>(TypeSpecifierSign::Unspecified);
1267 }
1268 }
1269
1270 // Validate the width of the type.
1271 switch (getTypeSpecWidth()) {
1272 case TypeSpecifierWidth::Unspecified:
1273 break;
1274 case TypeSpecifierWidth::Short: // short int
1275 case TypeSpecifierWidth::LongLong: // long long int
1276 if (TypeSpecType == TST_unspecified)
1277 TypeSpecType = TST_int; // short -> short int, long long -> long long int.
1278 else if (!(TypeSpecType == TST_int ||
1279 (IsFixedPointType &&
1280 getTypeSpecWidth() != TypeSpecifierWidth::LongLong))) {
1281 S.Diag(TSWRange.getBegin(), diag::err_invalid_width_spec)
1282 << (int)TypeSpecWidth << getSpecifierName((TST)TypeSpecType, Policy);
1283 TypeSpecType = TST_int;
1284 TypeSpecSat = false;
1285 TypeSpecOwned = false;
1286 }
1287 break;
1288 case TypeSpecifierWidth::Long: // long double, long int
1289 if (TypeSpecType == TST_unspecified)
1290 TypeSpecType = TST_int; // long -> long int.
1291 else if (TypeSpecType != TST_int && TypeSpecType != TST_double &&
1292 !IsFixedPointType) {
1293 S.Diag(TSWRange.getBegin(), diag::err_invalid_width_spec)
1294 << (int)TypeSpecWidth << getSpecifierName((TST)TypeSpecType, Policy);
1295 TypeSpecType = TST_int;
1296 TypeSpecSat = false;
1297 TypeSpecOwned = false;
1298 }
1299 break;
1300 }
1301
1302 // TODO: if the implementation does not implement _Complex or _Imaginary,
1303 // disallow their use. Need information about the backend.
1304 if (TypeSpecComplex != TSC_unspecified) {
1305 if (TypeSpecType == TST_unspecified) {
1306 S.Diag(TSCLoc, diag::ext_plain_complex)
1307 << FixItHint::CreateInsertion(
1308 S.getLocForEndOfToken(getTypeSpecComplexLoc()),
1309 " double");
1310 TypeSpecType = TST_double; // _Complex -> _Complex double.
1311 } else if (TypeSpecType == TST_int || TypeSpecType == TST_char ||
1312 TypeSpecType == TST_bitint) {
1313 // Note that this intentionally doesn't include _Complex _Bool.
1314 if (!S.getLangOpts().CPlusPlus)
1315 S.Diag(TSTLoc, diag::ext_integer_complex);
1316 } else if (TypeSpecType != TST_float && TypeSpecType != TST_double &&
1317 TypeSpecType != TST_float128 && TypeSpecType != TST_float16 &&
1318 TypeSpecType != TST_ibm128) {
1319 // FIXME: __fp16?
1320 S.Diag(TSCLoc, diag::err_invalid_complex_spec)
1321 << getSpecifierName((TST)TypeSpecType, Policy);
1322 TypeSpecComplex = TSC_unspecified;
1323 }
1324 }
1325
1326 // C11 6.7.1/3, C++11 [dcl.stc]p1, GNU TLS: __thread, thread_local and
1327 // _Thread_local can only appear with the 'static' and 'extern' storage class
1328 // specifiers. We also allow __private_extern__ as an extension.
1329 if (ThreadStorageClassSpec != TSCS_unspecified) {
1330 switch (StorageClassSpec) {
1331 case SCS_unspecified:
1332 case SCS_extern:
1333 case SCS_private_extern:
1334 case SCS_static:
1335 break;
1336 default:
1337 if (S.getSourceManager().isBeforeInTranslationUnit(
1338 getThreadStorageClassSpecLoc(), getStorageClassSpecLoc()))
1339 S.Diag(getStorageClassSpecLoc(),
1340 diag::err_invalid_decl_spec_combination)
1341 << DeclSpec::getSpecifierName(getThreadStorageClassSpec())
1342 << SourceRange(getThreadStorageClassSpecLoc());
1343 else
1344 S.Diag(getThreadStorageClassSpecLoc(),
1345 diag::err_invalid_decl_spec_combination)
1346 << DeclSpec::getSpecifierName(getStorageClassSpec())
1347 << SourceRange(getStorageClassSpecLoc());
1348 // Discard the thread storage class specifier to recover.
1349 ThreadStorageClassSpec = TSCS_unspecified;
1350 ThreadStorageClassSpecLoc = SourceLocation();
1351 }
1352 }
1353
1354 // If no type specifier was provided and we're parsing a language where
1355 // the type specifier is not optional, but we got 'auto' as a storage
1356 // class specifier, then assume this is an attempt to use C++0x's 'auto'
1357 // type specifier.
1358 if (S.getLangOpts().CPlusPlus &&
1359 TypeSpecType == TST_unspecified && StorageClassSpec == SCS_auto) {
1360 TypeSpecType = TST_auto;
1361 StorageClassSpec = SCS_unspecified;
1362 TSTLoc = TSTNameLoc = StorageClassSpecLoc;
1363 StorageClassSpecLoc = SourceLocation();
1364 }
1365 // Diagnose if we've recovered from an ill-formed 'auto' storage class
1366 // specifier in a pre-C++11 dialect of C++.
1367 if (!S.getLangOpts().CPlusPlus11 && TypeSpecType == TST_auto)
1368 S.Diag(TSTLoc, diag::ext_auto_type_specifier);
1369 if (S.getLangOpts().CPlusPlus && !S.getLangOpts().CPlusPlus11 &&
1370 StorageClassSpec == SCS_auto)
1371 S.Diag(StorageClassSpecLoc, diag::warn_auto_storage_class)
1372 << FixItHint::CreateRemoval(StorageClassSpecLoc);
1373 if (TypeSpecType == TST_char8)
1374 S.Diag(TSTLoc, diag::warn_cxx17_compat_unicode_type);
1375 else if (TypeSpecType == TST_char16 || TypeSpecType == TST_char32)
1376 S.Diag(TSTLoc, diag::warn_cxx98_compat_unicode_type)
1377 << (TypeSpecType == TST_char16 ? "char16_t" : "char32_t");
1378 if (getConstexprSpecifier() == ConstexprSpecKind::Constexpr)
1379 S.Diag(ConstexprLoc, diag::warn_cxx98_compat_constexpr);
1380 else if (getConstexprSpecifier() == ConstexprSpecKind::Consteval)
1381 S.Diag(ConstexprLoc, diag::warn_cxx20_compat_consteval);
1382 else if (getConstexprSpecifier() == ConstexprSpecKind::Constinit)
1383 S.Diag(ConstexprLoc, diag::warn_cxx20_compat_constinit);
1384 // C++ [class.friend]p6:
1385 // No storage-class-specifier shall appear in the decl-specifier-seq
1386 // of a friend declaration.
1387 if (isFriendSpecified() &&
1388 (getStorageClassSpec() || getThreadStorageClassSpec())) {
1389 SmallString<32> SpecName;
1390 SourceLocation SCLoc;
1391 FixItHint StorageHint, ThreadHint;
1392
1393 if (DeclSpec::SCS SC = getStorageClassSpec()) {
1394 SpecName = getSpecifierName(SC);
1395 SCLoc = getStorageClassSpecLoc();
1396 StorageHint = FixItHint::CreateRemoval(SCLoc);
1397 }
1398
1399 if (DeclSpec::TSCS TSC = getThreadStorageClassSpec()) {
1400 if (!SpecName.empty()) SpecName += " ";
1401 SpecName += getSpecifierName(TSC);
1402 SCLoc = getThreadStorageClassSpecLoc();
1403 ThreadHint = FixItHint::CreateRemoval(SCLoc);
1404 }
1405
1406 S.Diag(SCLoc, diag::err_friend_decl_spec)
1407 << SpecName << StorageHint << ThreadHint;
1408
1409 ClearStorageClassSpecs();
1410 }
1411
1412 // C++11 [dcl.fct.spec]p5:
1413 // The virtual specifier shall be used only in the initial
1414 // declaration of a non-static class member function;
1415 // C++11 [dcl.fct.spec]p6:
1416 // The explicit specifier shall be used only in the declaration of
1417 // a constructor or conversion function within its class
1418 // definition;
1419 if (isFriendSpecified() && (isVirtualSpecified() || hasExplicitSpecifier())) {
1420 StringRef Keyword;
1421 FixItHint Hint;
1422 SourceLocation SCLoc;
1423
1424 if (isVirtualSpecified()) {
1425 Keyword = "virtual";
1426 SCLoc = getVirtualSpecLoc();
1427 Hint = FixItHint::CreateRemoval(SCLoc);
1428 } else {
1429 Keyword = "explicit";
1430 SCLoc = getExplicitSpecLoc();
1431 Hint = FixItHint::CreateRemoval(getExplicitSpecRange());
1432 }
1433
1434 S.Diag(SCLoc, diag::err_friend_decl_spec)
1435 << Keyword << Hint;
1436
1437 FS_virtual_specified = false;
1438 FS_explicit_specifier = ExplicitSpecifier();
1439 FS_virtualLoc = FS_explicitLoc = SourceLocation();
1440 }
1441
1442 assert(!TypeSpecOwned || isDeclRep((TST) TypeSpecType));
1443
1444 // Okay, now we can infer the real type.
1445
1446 // TODO: return "auto function" and other bad things based on the real type.
1447
1448 // 'data definition has no type or storage class'?
1449 }
1450
isMissingDeclaratorOk()1451 bool DeclSpec::isMissingDeclaratorOk() {
1452 TST tst = getTypeSpecType();
1453 return isDeclRep(tst) && getRepAsDecl() != nullptr &&
1454 StorageClassSpec != DeclSpec::SCS_typedef;
1455 }
1456
setOperatorFunctionId(SourceLocation OperatorLoc,OverloadedOperatorKind Op,SourceLocation SymbolLocations[3])1457 void UnqualifiedId::setOperatorFunctionId(SourceLocation OperatorLoc,
1458 OverloadedOperatorKind Op,
1459 SourceLocation SymbolLocations[3]) {
1460 Kind = UnqualifiedIdKind::IK_OperatorFunctionId;
1461 StartLocation = OperatorLoc;
1462 EndLocation = OperatorLoc;
1463 new (&OperatorFunctionId) struct OFI;
1464 OperatorFunctionId.Operator = Op;
1465 for (unsigned I = 0; I != 3; ++I) {
1466 OperatorFunctionId.SymbolLocations[I] = SymbolLocations[I];
1467
1468 if (SymbolLocations[I].isValid())
1469 EndLocation = SymbolLocations[I];
1470 }
1471 }
1472
SetSpecifier(Specifier VS,SourceLocation Loc,const char * & PrevSpec)1473 bool VirtSpecifiers::SetSpecifier(Specifier VS, SourceLocation Loc,
1474 const char *&PrevSpec) {
1475 if (!FirstLocation.isValid())
1476 FirstLocation = Loc;
1477 LastLocation = Loc;
1478 LastSpecifier = VS;
1479
1480 if (Specifiers & VS) {
1481 PrevSpec = getSpecifierName(VS);
1482 return true;
1483 }
1484
1485 Specifiers |= VS;
1486
1487 switch (VS) {
1488 default: llvm_unreachable("Unknown specifier!");
1489 case VS_Override: VS_overrideLoc = Loc; break;
1490 case VS_GNU_Final:
1491 case VS_Sealed:
1492 case VS_Final: VS_finalLoc = Loc; break;
1493 case VS_Abstract: VS_abstractLoc = Loc; break;
1494 }
1495
1496 return false;
1497 }
1498
getSpecifierName(Specifier VS)1499 const char *VirtSpecifiers::getSpecifierName(Specifier VS) {
1500 switch (VS) {
1501 default: llvm_unreachable("Unknown specifier");
1502 case VS_Override: return "override";
1503 case VS_Final: return "final";
1504 case VS_GNU_Final: return "__final";
1505 case VS_Sealed: return "sealed";
1506 case VS_Abstract: return "abstract";
1507 }
1508 }
1509