1//===- TypeLoc.cpp - Type Source Info Wrapper -----------------------------===//
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 defines the TypeLoc subclasses implementations.
10//
11//===----------------------------------------------------------------------===//
12
13#include "clang/AST/TypeLoc.h"
14#include "clang/AST/ASTConcept.h"
15#include "clang/AST/ASTContext.h"
16#include "clang/AST/Attr.h"
17#include "clang/AST/DeclTemplate.h"
18#include "clang/AST/Expr.h"
19#include "clang/AST/NestedNameSpecifier.h"
20#include "clang/AST/TemplateBase.h"
21#include "clang/AST/TemplateName.h"
22#include "clang/AST/TypeLocVisitor.h"
23#include "clang/Basic/SourceLocation.h"
24#include "clang/Basic/Specifiers.h"
25#include "llvm/ADT/SmallVector.h"
26#include "llvm/Support/ErrorHandling.h"
27#include "llvm/Support/MathExtras.h"
28#include <algorithm>
29#include <cassert>
30#include <cstdint>
31#include <cstring>
32
33using namespace clang;
34
35static const unsigned TypeLocMaxDataAlign = alignof(void *);
36
37//===----------------------------------------------------------------------===//
38// TypeLoc Implementation
39//===----------------------------------------------------------------------===//
40
41namespace {
42
43class TypeLocRanger : public TypeLocVisitor<TypeLocRanger, SourceRange> {
44public:
45#define ABSTRACT_TYPELOC(CLASS, PARENT)
46#define TYPELOC(CLASS, PARENT) \
47 SourceRange Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \
48 return TyLoc.getLocalSourceRange(); \
49 }
50#include "clang/AST/TypeLocNodes.def"
51};
52
53} // namespace
54
55SourceRange TypeLoc::getLocalSourceRangeImpl(TypeLoc TL) {
56 if (TL.isNull()) return SourceRange();
57 return TypeLocRanger().Visit(TyLoc: TL);
58}
59
60namespace {
61
62class TypeAligner : public TypeLocVisitor<TypeAligner, unsigned> {
63public:
64#define ABSTRACT_TYPELOC(CLASS, PARENT)
65#define TYPELOC(CLASS, PARENT) \
66 unsigned Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \
67 return TyLoc.getLocalDataAlignment(); \
68 }
69#include "clang/AST/TypeLocNodes.def"
70};
71
72} // namespace
73
74/// Returns the alignment of the type source info data block.
75unsigned TypeLoc::getLocalAlignmentForType(QualType Ty) {
76 if (Ty.isNull()) return 1;
77 return TypeAligner().Visit(TyLoc: TypeLoc(Ty, nullptr));
78}
79
80namespace {
81
82class TypeSizer : public TypeLocVisitor<TypeSizer, unsigned> {
83public:
84#define ABSTRACT_TYPELOC(CLASS, PARENT)
85#define TYPELOC(CLASS, PARENT) \
86 unsigned Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \
87 return TyLoc.getLocalDataSize(); \
88 }
89#include "clang/AST/TypeLocNodes.def"
90};
91
92} // namespace
93
94/// Returns the size of the type source info data block.
95unsigned TypeLoc::getFullDataSizeForType(QualType Ty) {
96 unsigned Total = 0;
97 TypeLoc TyLoc(Ty, nullptr);
98 unsigned MaxAlign = 1;
99 while (!TyLoc.isNull()) {
100 unsigned Align = getLocalAlignmentForType(Ty: TyLoc.getType());
101 MaxAlign = std::max(a: Align, b: MaxAlign);
102 Total = llvm::alignTo(Value: Total, Align);
103 Total += TypeSizer().Visit(TyLoc);
104 TyLoc = TyLoc.getNextTypeLoc();
105 }
106 Total = llvm::alignTo(Value: Total, Align: MaxAlign);
107 return Total;
108}
109
110namespace {
111
112class NextLoc : public TypeLocVisitor<NextLoc, TypeLoc> {
113public:
114#define ABSTRACT_TYPELOC(CLASS, PARENT)
115#define TYPELOC(CLASS, PARENT) \
116 TypeLoc Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \
117 return TyLoc.getNextTypeLoc(); \
118 }
119#include "clang/AST/TypeLocNodes.def"
120};
121
122} // namespace
123
124/// Get the next TypeLoc pointed by this TypeLoc, e.g for "int*" the
125/// TypeLoc is a PointerLoc and next TypeLoc is for "int".
126TypeLoc TypeLoc::getNextTypeLocImpl(TypeLoc TL) {
127 return NextLoc().Visit(TyLoc: TL);
128}
129
130/// Initializes a type location, and all of its children
131/// recursively, as if the entire tree had been written in the
132/// given location.
133void TypeLoc::initializeImpl(ASTContext &Context, TypeLoc TL,
134 SourceLocation Loc) {
135 while (true) {
136 switch (TL.getTypeLocClass()) {
137#define ABSTRACT_TYPELOC(CLASS, PARENT)
138#define TYPELOC(CLASS, PARENT) \
139 case CLASS: { \
140 CLASS##TypeLoc TLCasted = TL.castAs<CLASS##TypeLoc>(); \
141 TLCasted.initializeLocal(Context, Loc); \
142 TL = TLCasted.getNextTypeLoc(); \
143 if (!TL) return; \
144 continue; \
145 }
146#include "clang/AST/TypeLocNodes.def"
147 }
148 }
149}
150
151namespace {
152
153class TypeLocCopier : public TypeLocVisitor<TypeLocCopier> {
154 TypeLoc Source;
155
156public:
157 TypeLocCopier(TypeLoc source) : Source(source) {}
158
159#define ABSTRACT_TYPELOC(CLASS, PARENT)
160#define TYPELOC(CLASS, PARENT) \
161 void Visit##CLASS##TypeLoc(CLASS##TypeLoc dest) { \
162 dest.copyLocal(Source.castAs<CLASS##TypeLoc>()); \
163 }
164#include "clang/AST/TypeLocNodes.def"
165};
166
167} // namespace
168
169void TypeLoc::copy(TypeLoc other) {
170 assert(getFullDataSize() == other.getFullDataSize());
171
172 // If both data pointers are aligned to the maximum alignment, we
173 // can memcpy because getFullDataSize() accurately reflects the
174 // layout of the data.
175 if (reinterpret_cast<uintptr_t>(Data) ==
176 llvm::alignTo(Value: reinterpret_cast<uintptr_t>(Data),
177 Align: TypeLocMaxDataAlign) &&
178 reinterpret_cast<uintptr_t>(other.Data) ==
179 llvm::alignTo(Value: reinterpret_cast<uintptr_t>(other.Data),
180 Align: TypeLocMaxDataAlign)) {
181 memcpy(dest: Data, src: other.Data, n: getFullDataSize());
182 return;
183 }
184
185 // Copy each of the pieces.
186 TypeLoc TL(getType(), Data);
187 do {
188 TypeLocCopier(other).Visit(TyLoc: TL);
189 other = other.getNextTypeLoc();
190 } while ((TL = TL.getNextTypeLoc()));
191}
192
193SourceLocation TypeLoc::getBeginLoc() const {
194 TypeLoc Cur = *this;
195 TypeLoc LeftMost = Cur;
196 while (true) {
197 switch (Cur.getTypeLocClass()) {
198 case FunctionProto:
199 if (Cur.castAs<FunctionProtoTypeLoc>().getTypePtr()
200 ->hasTrailingReturn()) {
201 LeftMost = Cur;
202 break;
203 }
204 [[fallthrough]];
205 case FunctionNoProto:
206 case ConstantArray:
207 case DependentSizedArray:
208 case IncompleteArray:
209 case VariableArray:
210 // FIXME: Currently QualifiedTypeLoc does not have a source range
211 case Qualified:
212 Cur = Cur.getNextTypeLoc();
213 continue;
214 default:
215 if (Cur.getLocalSourceRange().getBegin().isValid())
216 LeftMost = Cur;
217 Cur = Cur.getNextTypeLoc();
218 if (Cur.isNull())
219 break;
220 continue;
221 } // switch
222 break;
223 } // while
224 return LeftMost.getLocalSourceRange().getBegin();
225}
226
227SourceLocation TypeLoc::getEndLoc() const {
228 TypeLoc Cur = *this;
229 TypeLoc Last;
230 while (true) {
231 switch (Cur.getTypeLocClass()) {
232 default:
233 if (!Last)
234 Last = Cur;
235 return Last.getLocalSourceRange().getEnd();
236 case Paren:
237 case ConstantArray:
238 case DependentSizedArray:
239 case IncompleteArray:
240 case VariableArray:
241 case FunctionNoProto:
242 // The innermost type with suffix syntax always determines the end of the
243 // type.
244 Last = Cur;
245 break;
246 case FunctionProto:
247 if (Cur.castAs<FunctionProtoTypeLoc>().getTypePtr()->hasTrailingReturn())
248 Last = TypeLoc();
249 else
250 Last = Cur;
251 break;
252 case ObjCObjectPointer:
253 // `id` and `id<...>` have no star location.
254 if (Cur.castAs<ObjCObjectPointerTypeLoc>().getStarLoc().isInvalid())
255 break;
256 [[fallthrough]];
257 case Pointer:
258 case BlockPointer:
259 case MemberPointer:
260 case LValueReference:
261 case RValueReference:
262 case PackExpansion:
263 // Types with prefix syntax only determine the end of the type if there
264 // is no suffix type.
265 if (!Last)
266 Last = Cur;
267 break;
268 case Qualified:
269 break;
270 }
271 Cur = Cur.getNextTypeLoc();
272 }
273}
274
275namespace {
276
277struct TSTChecker : public TypeLocVisitor<TSTChecker, bool> {
278 // Overload resolution does the real work for us.
279 static bool isTypeSpec(TypeSpecTypeLoc _) { return true; }
280 static bool isTypeSpec(TypeLoc _) { return false; }
281
282#define ABSTRACT_TYPELOC(CLASS, PARENT)
283#define TYPELOC(CLASS, PARENT) \
284 bool Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \
285 return isTypeSpec(TyLoc); \
286 }
287#include "clang/AST/TypeLocNodes.def"
288};
289
290} // namespace
291
292/// Determines if the given type loc corresponds to a
293/// TypeSpecTypeLoc. Since there is not actually a TypeSpecType in
294/// the type hierarchy, this is made somewhat complicated.
295///
296/// There are a lot of types that currently use TypeSpecTypeLoc
297/// because it's a convenient base class. Ideally we would not accept
298/// those here, but ideally we would have better implementations for
299/// them.
300bool TypeSpecTypeLoc::isKind(const TypeLoc &TL) {
301 if (TL.getType().hasLocalQualifiers()) return false;
302 return TSTChecker().Visit(TyLoc: TL);
303}
304
305bool TagTypeLoc::isDefinition() const {
306 return getTypePtr()->isTagOwned() && getDecl()->isCompleteDefinition();
307}
308
309// Reimplemented to account for GNU/C++ extension
310// typeof unary-expression
311// where there are no parentheses.
312SourceRange TypeOfExprTypeLoc::getLocalSourceRange() const {
313 if (getRParenLoc().isValid())
314 return SourceRange(getTypeofLoc(), getRParenLoc());
315 else
316 return SourceRange(getTypeofLoc(),
317 getUnderlyingExpr()->getSourceRange().getEnd());
318}
319
320
321TypeSpecifierType BuiltinTypeLoc::getWrittenTypeSpec() const {
322 if (needsExtraLocalData())
323 return static_cast<TypeSpecifierType>(getWrittenBuiltinSpecs().Type);
324 switch (getTypePtr()->getKind()) {
325 case BuiltinType::Void:
326 return TST_void;
327 case BuiltinType::Bool:
328 return TST_bool;
329 case BuiltinType::Char_U:
330 case BuiltinType::Char_S:
331 return TST_char;
332 case BuiltinType::Char8:
333 return TST_char8;
334 case BuiltinType::Char16:
335 return TST_char16;
336 case BuiltinType::Char32:
337 return TST_char32;
338 case BuiltinType::WChar_S:
339 case BuiltinType::WChar_U:
340 return TST_wchar;
341 case BuiltinType::UChar:
342 case BuiltinType::UShort:
343 case BuiltinType::UInt:
344 case BuiltinType::ULong:
345 case BuiltinType::ULongLong:
346 case BuiltinType::UInt128:
347 case BuiltinType::SChar:
348 case BuiltinType::Short:
349 case BuiltinType::Int:
350 case BuiltinType::Long:
351 case BuiltinType::LongLong:
352 case BuiltinType::Int128:
353 case BuiltinType::Half:
354 case BuiltinType::Float:
355 case BuiltinType::Double:
356 case BuiltinType::LongDouble:
357 case BuiltinType::Float16:
358 case BuiltinType::Float128:
359 case BuiltinType::Ibm128:
360 case BuiltinType::ShortAccum:
361 case BuiltinType::Accum:
362 case BuiltinType::LongAccum:
363 case BuiltinType::UShortAccum:
364 case BuiltinType::UAccum:
365 case BuiltinType::ULongAccum:
366 case BuiltinType::ShortFract:
367 case BuiltinType::Fract:
368 case BuiltinType::LongFract:
369 case BuiltinType::UShortFract:
370 case BuiltinType::UFract:
371 case BuiltinType::ULongFract:
372 case BuiltinType::SatShortAccum:
373 case BuiltinType::SatAccum:
374 case BuiltinType::SatLongAccum:
375 case BuiltinType::SatUShortAccum:
376 case BuiltinType::SatUAccum:
377 case BuiltinType::SatULongAccum:
378 case BuiltinType::SatShortFract:
379 case BuiltinType::SatFract:
380 case BuiltinType::SatLongFract:
381 case BuiltinType::SatUShortFract:
382 case BuiltinType::SatUFract:
383 case BuiltinType::SatULongFract:
384 case BuiltinType::BFloat16:
385 llvm_unreachable("Builtin type needs extra local data!");
386 // Fall through, if the impossible happens.
387
388 case BuiltinType::NullPtr:
389 case BuiltinType::Overload:
390 case BuiltinType::Dependent:
391 case BuiltinType::UnresolvedTemplate:
392 case BuiltinType::BoundMember:
393 case BuiltinType::UnknownAny:
394 case BuiltinType::ARCUnbridgedCast:
395 case BuiltinType::PseudoObject:
396 case BuiltinType::ObjCId:
397 case BuiltinType::ObjCClass:
398 case BuiltinType::ObjCSel:
399#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
400 case BuiltinType::Id:
401#include "clang/Basic/OpenCLImageTypes.def"
402#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
403 case BuiltinType::Id:
404#include "clang/Basic/OpenCLExtensionTypes.def"
405 case BuiltinType::OCLSampler:
406 case BuiltinType::OCLEvent:
407 case BuiltinType::OCLClkEvent:
408 case BuiltinType::OCLQueue:
409 case BuiltinType::OCLReserveID:
410#define SVE_TYPE(Name, Id, SingletonId) \
411 case BuiltinType::Id:
412#include "clang/Basic/AArch64ACLETypes.def"
413#define PPC_VECTOR_TYPE(Name, Id, Size) \
414 case BuiltinType::Id:
415#include "clang/Basic/PPCTypes.def"
416#define RVV_TYPE(Name, Id, SingletonId) case BuiltinType::Id:
417#include "clang/Basic/RISCVVTypes.def"
418#define WASM_TYPE(Name, Id, SingletonId) case BuiltinType::Id:
419#include "clang/Basic/WebAssemblyReferenceTypes.def"
420#define AMDGPU_TYPE(Name, Id, SingletonId, Width, Align) case BuiltinType::Id:
421#include "clang/Basic/AMDGPUTypes.def"
422#define HLSL_INTANGIBLE_TYPE(Name, Id, SingletonId) case BuiltinType::Id:
423#include "clang/Basic/HLSLIntangibleTypes.def"
424 case BuiltinType::BuiltinFn:
425 case BuiltinType::IncompleteMatrixIdx:
426 case BuiltinType::ArraySection:
427 case BuiltinType::OMPArrayShaping:
428 case BuiltinType::OMPIterator:
429 return TST_unspecified;
430 }
431
432 llvm_unreachable("Invalid BuiltinType Kind!");
433}
434
435TypeLoc TypeLoc::IgnoreParensImpl(TypeLoc TL) {
436 while (ParenTypeLoc PTL = TL.getAs<ParenTypeLoc>())
437 TL = PTL.getInnerLoc();
438 return TL;
439}
440
441SourceLocation TypeLoc::findNullabilityLoc() const {
442 if (auto ATL = getAs<AttributedTypeLoc>()) {
443 const Attr *A = ATL.getAttr();
444 if (A && (isa<TypeNullableAttr>(Val: A) || isa<TypeNonNullAttr>(Val: A) ||
445 isa<TypeNullUnspecifiedAttr>(Val: A)))
446 return A->getLocation();
447 }
448
449 return {};
450}
451
452TypeLoc TypeLoc::findExplicitQualifierLoc() const {
453 // Qualified types.
454 if (auto qual = getAs<QualifiedTypeLoc>())
455 return qual;
456
457 TypeLoc loc = IgnoreParens();
458
459 // Attributed types.
460 if (auto attr = loc.getAs<AttributedTypeLoc>()) {
461 if (attr.isQualifier()) return attr;
462 return attr.getModifiedLoc().findExplicitQualifierLoc();
463 }
464
465 // C11 _Atomic types.
466 if (auto atomic = loc.getAs<AtomicTypeLoc>()) {
467 return atomic;
468 }
469
470 return {};
471}
472
473NestedNameSpecifierLoc TypeLoc::getPrefix() const {
474 switch (getTypeLocClass()) {
475 case TypeLoc::DependentName:
476 return castAs<DependentNameTypeLoc>().getQualifierLoc();
477 case TypeLoc::TemplateSpecialization:
478 return castAs<TemplateSpecializationTypeLoc>().getQualifierLoc();
479 case TypeLoc::DeducedTemplateSpecialization:
480 return castAs<DeducedTemplateSpecializationTypeLoc>().getQualifierLoc();
481 case TypeLoc::Enum:
482 case TypeLoc::Record:
483 case TypeLoc::InjectedClassName:
484 return castAs<TagTypeLoc>().getQualifierLoc();
485 case TypeLoc::Typedef:
486 return castAs<TypedefTypeLoc>().getQualifierLoc();
487 case TypeLoc::UnresolvedUsing:
488 return castAs<UnresolvedUsingTypeLoc>().getQualifierLoc();
489 case TypeLoc::Using:
490 return castAs<UsingTypeLoc>().getQualifierLoc();
491 default:
492 return NestedNameSpecifierLoc();
493 }
494}
495
496SourceLocation TypeLoc::getNonElaboratedBeginLoc() const {
497 // For elaborated types (e.g. `struct a::A`) we want the portion after the
498 // `struct` but including the namespace qualifier, `a::`.
499 switch (getTypeLocClass()) {
500 case TypeLoc::Qualified:
501 return castAs<QualifiedTypeLoc>()
502 .getUnqualifiedLoc()
503 .getNonElaboratedBeginLoc();
504 case TypeLoc::TemplateSpecialization: {
505 auto T = castAs<TemplateSpecializationTypeLoc>();
506 if (NestedNameSpecifierLoc QualifierLoc = T.getQualifierLoc())
507 return QualifierLoc.getBeginLoc();
508 return T.getTemplateNameLoc();
509 }
510 case TypeLoc::DeducedTemplateSpecialization: {
511 auto T = castAs<DeducedTemplateSpecializationTypeLoc>();
512 if (NestedNameSpecifierLoc QualifierLoc = T.getQualifierLoc())
513 return QualifierLoc.getBeginLoc();
514 return T.getTemplateNameLoc();
515 }
516 case TypeLoc::DependentName: {
517 auto T = castAs<DependentNameTypeLoc>();
518 if (NestedNameSpecifierLoc QualifierLoc = T.getQualifierLoc())
519 return QualifierLoc.getBeginLoc();
520 return T.getNameLoc();
521 }
522 case TypeLoc::Enum:
523 case TypeLoc::Record:
524 case TypeLoc::InjectedClassName: {
525 auto T = castAs<TagTypeLoc>();
526 if (NestedNameSpecifierLoc QualifierLoc = T.getQualifierLoc())
527 return QualifierLoc.getBeginLoc();
528 return T.getNameLoc();
529 }
530 case TypeLoc::Typedef: {
531 auto T = castAs<TypedefTypeLoc>();
532 if (NestedNameSpecifierLoc QualifierLoc = T.getQualifierLoc())
533 return QualifierLoc.getBeginLoc();
534 return T.getNameLoc();
535 }
536 case TypeLoc::UnresolvedUsing: {
537 auto T = castAs<UnresolvedUsingTypeLoc>();
538 if (NestedNameSpecifierLoc QualifierLoc = T.getQualifierLoc())
539 return QualifierLoc.getBeginLoc();
540 return T.getNameLoc();
541 }
542 case TypeLoc::Using: {
543 auto T = castAs<UsingTypeLoc>();
544 if (NestedNameSpecifierLoc QualifierLoc = T.getQualifierLoc())
545 return QualifierLoc.getBeginLoc();
546 return T.getNameLoc();
547 }
548 default:
549 return getBeginLoc();
550 }
551}
552
553void ObjCTypeParamTypeLoc::initializeLocal(ASTContext &Context,
554 SourceLocation Loc) {
555 setNameLoc(Loc);
556 if (!getNumProtocols()) return;
557
558 setProtocolLAngleLoc(Loc);
559 setProtocolRAngleLoc(Loc);
560 for (unsigned i = 0, e = getNumProtocols(); i != e; ++i)
561 setProtocolLoc(i, Loc);
562}
563
564void ObjCObjectTypeLoc::initializeLocal(ASTContext &Context,
565 SourceLocation Loc) {
566 setHasBaseTypeAsWritten(true);
567 setTypeArgsLAngleLoc(Loc);
568 setTypeArgsRAngleLoc(Loc);
569 for (unsigned i = 0, e = getNumTypeArgs(); i != e; ++i) {
570 setTypeArgTInfo(i,
571 TInfo: Context.getTrivialTypeSourceInfo(
572 T: getTypePtr()->getTypeArgsAsWritten()[i], Loc));
573 }
574 setProtocolLAngleLoc(Loc);
575 setProtocolRAngleLoc(Loc);
576 for (unsigned i = 0, e = getNumProtocols(); i != e; ++i)
577 setProtocolLoc(i, Loc);
578}
579
580SourceRange AttributedTypeLoc::getLocalSourceRange() const {
581 // Note that this does *not* include the range of the attribute
582 // enclosure, e.g.:
583 // __attribute__((foo(bar)))
584 // ^~~~~~~~~~~~~~~ ~~
585 // or
586 // [[foo(bar)]]
587 // ^~ ~~
588 // That enclosure doesn't necessarily belong to a single attribute
589 // anyway.
590 return getAttr() ? getAttr()->getRange() : SourceRange();
591}
592
593SourceRange CountAttributedTypeLoc::getLocalSourceRange() const {
594 return getCountExpr() ? getCountExpr()->getSourceRange() : SourceRange();
595}
596
597SourceRange BTFTagAttributedTypeLoc::getLocalSourceRange() const {
598 return getAttr() ? getAttr()->getRange() : SourceRange();
599}
600
601SourceRange OverflowBehaviorTypeLoc::getLocalSourceRange() const {
602 return SourceRange();
603}
604
605void TypeOfTypeLoc::initializeLocal(ASTContext &Context,
606 SourceLocation Loc) {
607 TypeofLikeTypeLoc<TypeOfTypeLoc, TypeOfType, TypeOfTypeLocInfo>
608 ::initializeLocal(Context, Loc);
609 this->getLocalData()->UnmodifiedTInfo =
610 Context.getTrivialTypeSourceInfo(T: getUnmodifiedType(), Loc);
611}
612
613void UnaryTransformTypeLoc::initializeLocal(ASTContext &Context,
614 SourceLocation Loc) {
615 setKWLoc(Loc);
616 setRParenLoc(Loc);
617 setLParenLoc(Loc);
618 this->setUnderlyingTInfo(
619 Context.getTrivialTypeSourceInfo(T: getTypePtr()->getBaseType(), Loc));
620}
621
622template <class TL>
623static void initializeElaboratedKeyword(TL T, SourceLocation Loc) {
624 T.setElaboratedKeywordLoc(T.getTypePtr()->getKeyword() !=
625 ElaboratedTypeKeyword::None
626 ? Loc
627 : SourceLocation());
628}
629
630static NestedNameSpecifierLoc initializeQualifier(ASTContext &Context,
631 NestedNameSpecifier Qualifier,
632 SourceLocation Loc) {
633 if (!Qualifier)
634 return NestedNameSpecifierLoc();
635 NestedNameSpecifierLocBuilder Builder;
636 Builder.MakeTrivial(Context, Qualifier, R: Loc);
637 return Builder.getWithLocInContext(Context);
638}
639
640void DependentNameTypeLoc::initializeLocal(ASTContext &Context,
641 SourceLocation Loc) {
642 initializeElaboratedKeyword(T: *this, Loc);
643 setQualifierLoc(
644 initializeQualifier(Context, Qualifier: getTypePtr()->getQualifier(), Loc));
645 setNameLoc(Loc);
646}
647
648void TemplateSpecializationTypeLoc::set(SourceLocation ElaboratedKeywordLoc,
649 NestedNameSpecifierLoc QualifierLoc,
650 SourceLocation TemplateKeywordLoc,
651 SourceLocation NameLoc,
652 SourceLocation LAngleLoc,
653 SourceLocation RAngleLoc) {
654 TemplateSpecializationLocInfo &Data = *getLocalData();
655
656 Data.ElaboratedKWLoc = ElaboratedKeywordLoc;
657 SourceLocation BeginLoc = ElaboratedKeywordLoc;
658
659 getLocalData()->QualifierData = QualifierLoc.getOpaqueData();
660
661 assert(QualifierLoc.getNestedNameSpecifier() ==
662 getTypePtr()->getTemplateName().getQualifier());
663 Data.QualifierData = QualifierLoc ? QualifierLoc.getOpaqueData() : nullptr;
664 if (QualifierLoc && !BeginLoc.isValid())
665 BeginLoc = QualifierLoc.getBeginLoc();
666
667 Data.TemplateKWLoc = TemplateKeywordLoc;
668 if (!BeginLoc.isValid())
669 BeginLoc = TemplateKeywordLoc;
670
671 Data.NameLoc = NameLoc;
672 if (!BeginLoc.isValid())
673 BeginLoc = NameLoc;
674
675 Data.LAngleLoc = LAngleLoc;
676 Data.SR = SourceRange(BeginLoc, RAngleLoc);
677}
678
679void TemplateSpecializationTypeLoc::set(SourceLocation ElaboratedKeywordLoc,
680 NestedNameSpecifierLoc QualifierLoc,
681 SourceLocation TemplateKeywordLoc,
682 SourceLocation NameLoc,
683 const TemplateArgumentListInfo &TAL) {
684 set(ElaboratedKeywordLoc, QualifierLoc, TemplateKeywordLoc, NameLoc,
685 LAngleLoc: TAL.getLAngleLoc(), RAngleLoc: TAL.getRAngleLoc());
686 MutableArrayRef<TemplateArgumentLocInfo> ArgInfos = getArgLocInfos();
687 assert(TAL.size() == ArgInfos.size());
688 for (unsigned I = 0, N = TAL.size(); I != N; ++I)
689 ArgInfos[I] = TAL[I].getLocInfo();
690}
691
692void TemplateSpecializationTypeLoc::initializeLocal(ASTContext &Context,
693 SourceLocation Loc) {
694
695 auto [Qualifier, HasTemplateKeyword] =
696 getTypePtr()->getTemplateName().getQualifierAndTemplateKeyword();
697
698 SourceLocation ElaboratedKeywordLoc =
699 getTypePtr()->getKeyword() != ElaboratedTypeKeyword::None
700 ? Loc
701 : SourceLocation();
702
703 NestedNameSpecifierLoc QualifierLoc;
704 if (Qualifier) {
705 NestedNameSpecifierLocBuilder Builder;
706 Builder.MakeTrivial(Context, Qualifier, R: Loc);
707 QualifierLoc = Builder.getWithLocInContext(Context);
708 }
709
710 TemplateArgumentListInfo TAL(Loc, Loc);
711 set(ElaboratedKeywordLoc, QualifierLoc,
712 /*TemplateKeywordLoc=*/HasTemplateKeyword ? Loc : SourceLocation(),
713 /*NameLoc=*/Loc, /*LAngleLoc=*/Loc, /*RAngleLoc=*/Loc);
714 initializeArgLocs(Context, Args: getTypePtr()->template_arguments(), ArgInfos: getArgInfos(),
715 Loc);
716}
717
718void TemplateSpecializationTypeLoc::initializeArgLocs(
719 ASTContext &Context, ArrayRef<TemplateArgument> Args,
720 TemplateArgumentLocInfo *ArgInfos, SourceLocation Loc) {
721 for (unsigned i = 0, e = Args.size(); i != e; ++i) {
722 switch (Args[i].getKind()) {
723 case TemplateArgument::Null:
724 llvm_unreachable("Impossible TemplateArgument");
725
726 case TemplateArgument::Integral:
727 case TemplateArgument::Declaration:
728 case TemplateArgument::NullPtr:
729 case TemplateArgument::StructuralValue:
730 ArgInfos[i] = TemplateArgumentLocInfo();
731 break;
732
733 case TemplateArgument::Expression:
734 ArgInfos[i] = TemplateArgumentLocInfo(Args[i].getAsExpr());
735 break;
736
737 case TemplateArgument::Type:
738 ArgInfos[i] = TemplateArgumentLocInfo(
739 Context.getTrivialTypeSourceInfo(T: Args[i].getAsType(),
740 Loc));
741 break;
742
743 case TemplateArgument::Template:
744 case TemplateArgument::TemplateExpansion: {
745 NestedNameSpecifierLocBuilder Builder;
746 TemplateName Template = Args[i].getAsTemplateOrTemplatePattern();
747 if (DependentTemplateName *DTN = Template.getAsDependentTemplateName())
748 Builder.MakeTrivial(Context, Qualifier: DTN->getQualifier(), R: Loc);
749 else if (QualifiedTemplateName *QTN = Template.getAsQualifiedTemplateName())
750 Builder.MakeTrivial(Context, Qualifier: QTN->getQualifier(), R: Loc);
751
752 ArgInfos[i] = TemplateArgumentLocInfo(
753 Context, Loc, Builder.getWithLocInContext(Context), Loc,
754 Args[i].getKind() == TemplateArgument::Template ? SourceLocation()
755 : Loc);
756 break;
757 }
758
759 case TemplateArgument::Pack:
760 ArgInfos[i] = TemplateArgumentLocInfo();
761 break;
762 }
763 }
764}
765
766// Builds a ConceptReference where all locations point at the same token,
767// for use in trivial TypeSourceInfo for constrained AutoType
768static ConceptReference *createTrivialConceptReference(ASTContext &Context,
769 SourceLocation Loc,
770 const AutoType *AT) {
771 DeclarationNameInfo DNI =
772 DeclarationNameInfo(AT->getTypeConstraintConcept()->getDeclName(), Loc,
773 AT->getTypeConstraintConcept()->getDeclName());
774 unsigned size = AT->getTypeConstraintArguments().size();
775 llvm::SmallVector<TemplateArgumentLocInfo, 8> TALI(size);
776 TemplateSpecializationTypeLoc::initializeArgLocs(
777 Context, Args: AT->getTypeConstraintArguments(), ArgInfos: TALI.data(), Loc);
778 TemplateArgumentListInfo TAListI;
779 for (unsigned i = 0; i < size; ++i) {
780 TAListI.addArgument(
781 Loc: TemplateArgumentLoc(AT->getTypeConstraintArguments()[i],
782 TALI[i])); // TemplateArgumentLocInfo()
783 }
784
785 auto *ConceptRef = ConceptReference::Create(
786 C: Context, NNS: NestedNameSpecifierLoc{}, TemplateKWLoc: Loc, ConceptNameInfo: DNI, FoundDecl: nullptr,
787 NamedConcept: AT->getTypeConstraintConcept(),
788 ArgsAsWritten: ASTTemplateArgumentListInfo::Create(C: Context, List: TAListI));
789 return ConceptRef;
790}
791
792void AutoTypeLoc::initializeLocal(ASTContext &Context, SourceLocation Loc) {
793 setRParenLoc(Loc);
794 setNameLoc(Loc);
795 setConceptReference(nullptr);
796 if (getTypePtr()->isConstrained()) {
797 setConceptReference(
798 createTrivialConceptReference(Context, Loc, AT: getTypePtr()));
799 }
800}
801
802void DeducedTemplateSpecializationTypeLoc::initializeLocal(ASTContext &Context,
803 SourceLocation Loc) {
804 initializeElaboratedKeyword(T: *this, Loc);
805 setQualifierLoc(initializeQualifier(
806 Context, Qualifier: getTypePtr()->getTemplateName().getQualifier(), Loc));
807 setTemplateNameLoc(Loc);
808}
809
810namespace {
811
812 class GetContainedAutoTypeLocVisitor :
813 public TypeLocVisitor<GetContainedAutoTypeLocVisitor, TypeLoc> {
814 public:
815 using TypeLocVisitor<GetContainedAutoTypeLocVisitor, TypeLoc>::Visit;
816
817 TypeLoc VisitAutoTypeLoc(AutoTypeLoc TL) {
818 return TL;
819 }
820
821 // Only these types can contain the desired 'auto' type.
822
823 TypeLoc VisitQualifiedTypeLoc(QualifiedTypeLoc T) {
824 return Visit(TyLoc: T.getUnqualifiedLoc());
825 }
826
827 TypeLoc VisitPointerTypeLoc(PointerTypeLoc T) {
828 return Visit(TyLoc: T.getPointeeLoc());
829 }
830
831 TypeLoc VisitBlockPointerTypeLoc(BlockPointerTypeLoc T) {
832 return Visit(TyLoc: T.getPointeeLoc());
833 }
834
835 TypeLoc VisitReferenceTypeLoc(ReferenceTypeLoc T) {
836 return Visit(TyLoc: T.getPointeeLoc());
837 }
838
839 TypeLoc VisitMemberPointerTypeLoc(MemberPointerTypeLoc T) {
840 return Visit(TyLoc: T.getPointeeLoc());
841 }
842
843 TypeLoc VisitArrayTypeLoc(ArrayTypeLoc T) {
844 return Visit(TyLoc: T.getElementLoc());
845 }
846
847 TypeLoc VisitFunctionTypeLoc(FunctionTypeLoc T) {
848 return Visit(TyLoc: T.getReturnLoc());
849 }
850
851 TypeLoc VisitParenTypeLoc(ParenTypeLoc T) {
852 return Visit(TyLoc: T.getInnerLoc());
853 }
854
855 TypeLoc VisitAttributedTypeLoc(AttributedTypeLoc T) {
856 return Visit(TyLoc: T.getModifiedLoc());
857 }
858
859 TypeLoc VisitBTFTagAttributedTypeLoc(BTFTagAttributedTypeLoc T) {
860 return Visit(TyLoc: T.getWrappedLoc());
861 }
862
863 TypeLoc VisitOverflowBehaviorTypeLoc(OverflowBehaviorTypeLoc T) {
864 return Visit(TyLoc: T.getWrappedLoc());
865 }
866
867 TypeLoc
868 VisitHLSLAttributedResourceTypeLoc(HLSLAttributedResourceTypeLoc T) {
869 return Visit(TyLoc: T.getWrappedLoc());
870 }
871
872 TypeLoc VisitMacroQualifiedTypeLoc(MacroQualifiedTypeLoc T) {
873 return Visit(TyLoc: T.getInnerLoc());
874 }
875
876 TypeLoc VisitAdjustedTypeLoc(AdjustedTypeLoc T) {
877 return Visit(TyLoc: T.getOriginalLoc());
878 }
879
880 TypeLoc VisitPackExpansionTypeLoc(PackExpansionTypeLoc T) {
881 return Visit(TyLoc: T.getPatternLoc());
882 }
883 };
884
885} // namespace
886
887AutoTypeLoc TypeLoc::getContainedAutoTypeLoc() const {
888 TypeLoc Res = GetContainedAutoTypeLocVisitor().Visit(TyLoc: *this);
889 if (Res.isNull())
890 return AutoTypeLoc();
891 return Res.getAs<AutoTypeLoc>();
892}
893
894SourceLocation TypeLoc::getTemplateKeywordLoc() const {
895 if (const auto TSTL = getAsAdjusted<TemplateSpecializationTypeLoc>())
896 return TSTL.getTemplateKeywordLoc();
897 return SourceLocation();
898}
899