clang  15.0.0git
Type.cpp
Go to the documentation of this file.
1 //===- Type.cpp - Type representation and manipulation --------------------===//
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 type-related functionality.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "clang/AST/Type.h"
14 #include "Linkage.h"
15 #include "clang/AST/ASTContext.h"
16 #include "clang/AST/Attr.h"
17 #include "clang/AST/CharUnits.h"
18 #include "clang/AST/Decl.h"
19 #include "clang/AST/DeclBase.h"
20 #include "clang/AST/DeclCXX.h"
21 #include "clang/AST/DeclObjC.h"
22 #include "clang/AST/DeclTemplate.h"
24 #include "clang/AST/Expr.h"
28 #include "clang/AST/TemplateBase.h"
29 #include "clang/AST/TemplateName.h"
30 #include "clang/AST/TypeVisitor.h"
34 #include "clang/Basic/LLVM.h"
36 #include "clang/Basic/Linkage.h"
37 #include "clang/Basic/Specifiers.h"
39 #include "clang/Basic/TargetInfo.h"
40 #include "clang/Basic/Visibility.h"
41 #include "llvm/ADT/APInt.h"
42 #include "llvm/ADT/APSInt.h"
43 #include "llvm/ADT/ArrayRef.h"
44 #include "llvm/ADT/FoldingSet.h"
45 #include "llvm/ADT/None.h"
46 #include "llvm/ADT/SmallVector.h"
47 #include "llvm/Support/Casting.h"
48 #include "llvm/Support/ErrorHandling.h"
49 #include "llvm/Support/MathExtras.h"
50 #include <algorithm>
51 #include <cassert>
52 #include <cstdint>
53 #include <cstring>
54 #include <type_traits>
55 
56 using namespace clang;
57 
59  return (*this != Other) &&
60  // CVR qualifiers superset
61  (((Mask & CVRMask) | (Other.Mask & CVRMask)) == (Mask & CVRMask)) &&
62  // ObjC GC qualifiers superset
63  ((getObjCGCAttr() == Other.getObjCGCAttr()) ||
64  (hasObjCGCAttr() && !Other.hasObjCGCAttr())) &&
65  // Address space superset.
66  ((getAddressSpace() == Other.getAddressSpace()) ||
67  (hasAddressSpace()&& !Other.hasAddressSpace())) &&
68  // Lifetime qualifier superset.
69  ((getObjCLifetime() == Other.getObjCLifetime()) ||
70  (hasObjCLifetime() && !Other.hasObjCLifetime()));
71 }
72 
74  const Type* ty = getTypePtr();
75  NamedDecl *ND = nullptr;
76  if (ty->isPointerType() || ty->isReferenceType())
78  else if (ty->isRecordType())
79  ND = ty->castAs<RecordType>()->getDecl();
80  else if (ty->isEnumeralType())
81  ND = ty->castAs<EnumType>()->getDecl();
82  else if (ty->getTypeClass() == Type::Typedef)
83  ND = ty->castAs<TypedefType>()->getDecl();
84  else if (ty->isArrayType())
85  return ty->castAsArrayTypeUnsafe()->
86  getElementType().getBaseTypeIdentifier();
87 
88  if (ND)
89  return ND->getIdentifier();
90  return nullptr;
91 }
92 
94  const auto *ClassDecl = getTypePtr()->getPointeeCXXRecordDecl();
95  return ClassDecl && ClassDecl->mayBeDynamicClass();
96 }
97 
99  const auto *ClassDecl = getTypePtr()->getPointeeCXXRecordDecl();
100  return !ClassDecl || ClassDecl->mayBeNonDynamicClass();
101 }
102 
103 bool QualType::isConstant(QualType T, const ASTContext &Ctx) {
104  if (T.isConstQualified())
105  return true;
106 
107  if (const ArrayType *AT = Ctx.getAsArrayType(T))
108  return AT->getElementType().isConstant(Ctx);
109 
111 }
112 
113 // C++ [temp.dep.type]p1:
114 // A type is dependent if it is...
115 // - an array type constructed from any dependent type or whose
116 // size is specified by a constant expression that is
117 // value-dependent,
119  ArraySizeModifier sm, unsigned tq, const Expr *sz)
120  // Note, we need to check for DependentSizedArrayType explicitly here
121  // because we use a DependentSizedArrayType with no size expression as the
122  // type of a dependent array of unknown bound with a dependent braced
123  // initializer:
124  //
125  // template<int ...N> int arr[] = {N...};
126  : Type(tc, can,
127  et->getDependence() |
128  (sz ? toTypeDependence(
129  turnValueToTypeDependence(sz->getDependence()))
130  : TypeDependence::None) |
131  (tc == VariableArray ? TypeDependence::VariablyModified
132  : TypeDependence::None) |
133  (tc == DependentSizedArray
134  ? TypeDependence::DependentInstantiation
135  : TypeDependence::None)),
136  ElementType(et) {
137  ArrayTypeBits.IndexTypeQuals = tq;
138  ArrayTypeBits.SizeModifier = sm;
139 }
140 
142  QualType ElementType,
143  const llvm::APInt &NumElements) {
144  uint64_t ElementSize = Context.getTypeSizeInChars(ElementType).getQuantity();
145 
146  // Fast path the common cases so we can avoid the conservative computation
147  // below, which in common cases allocates "large" APSInt values, which are
148  // slow.
149 
150  // If the element size is a power of 2, we can directly compute the additional
151  // number of addressing bits beyond those required for the element count.
152  if (llvm::isPowerOf2_64(ElementSize)) {
153  return NumElements.getActiveBits() + llvm::Log2_64(ElementSize);
154  }
155 
156  // If both the element count and element size fit in 32-bits, we can do the
157  // computation directly in 64-bits.
158  if ((ElementSize >> 32) == 0 && NumElements.getBitWidth() <= 64 &&
159  (NumElements.getZExtValue() >> 32) == 0) {
160  uint64_t TotalSize = NumElements.getZExtValue() * ElementSize;
161  return 64 - llvm::countLeadingZeros(TotalSize);
162  }
163 
164  // Otherwise, use APSInt to handle arbitrary sized values.
165  llvm::APSInt SizeExtended(NumElements, true);
166  unsigned SizeTypeBits = Context.getTypeSize(Context.getSizeType());
167  SizeExtended = SizeExtended.extend(std::max(SizeTypeBits,
168  SizeExtended.getBitWidth()) * 2);
169 
170  llvm::APSInt TotalSize(llvm::APInt(SizeExtended.getBitWidth(), ElementSize));
171  TotalSize *= SizeExtended;
172 
173  return TotalSize.getActiveBits();
174 }
175 
177  unsigned Bits = Context.getTypeSize(Context.getSizeType());
178 
179  // Limit the number of bits in size_t so that maximal bit size fits 64 bit
180  // integer (see PR8256). We can do this as currently there is no hardware
181  // that supports full 64-bit virtual space.
182  if (Bits > 61)
183  Bits = 61;
184 
185  return Bits;
186 }
187 
188 void ConstantArrayType::Profile(llvm::FoldingSetNodeID &ID,
189  const ASTContext &Context, QualType ET,
190  const llvm::APInt &ArraySize,
191  const Expr *SizeExpr, ArraySizeModifier SizeMod,
192  unsigned TypeQuals) {
193  ID.AddPointer(ET.getAsOpaquePtr());
194  ID.AddInteger(ArraySize.getZExtValue());
195  ID.AddInteger(SizeMod);
196  ID.AddInteger(TypeQuals);
197  ID.AddBoolean(SizeExpr != nullptr);
198  if (SizeExpr)
199  SizeExpr->Profile(ID, Context, true);
200 }
201 
202 DependentSizedArrayType::DependentSizedArrayType(const ASTContext &Context,
203  QualType et, QualType can,
204  Expr *e, ArraySizeModifier sm,
205  unsigned tq,
206  SourceRange brackets)
207  : ArrayType(DependentSizedArray, et, can, sm, tq, e),
208  Context(Context), SizeExpr((Stmt*) e), Brackets(brackets) {}
209 
210 void DependentSizedArrayType::Profile(llvm::FoldingSetNodeID &ID,
211  const ASTContext &Context,
212  QualType ET,
213  ArraySizeModifier SizeMod,
214  unsigned TypeQuals,
215  Expr *E) {
216  ID.AddPointer(ET.getAsOpaquePtr());
217  ID.AddInteger(SizeMod);
218  ID.AddInteger(TypeQuals);
219  E->Profile(ID, Context, true);
220 }
221 
222 DependentVectorType::DependentVectorType(const ASTContext &Context,
223  QualType ElementType,
224  QualType CanonType, Expr *SizeExpr,
225  SourceLocation Loc,
226  VectorType::VectorKind VecKind)
227  : Type(DependentVector, CanonType,
228  TypeDependence::DependentInstantiation |
229  ElementType->getDependence() |
230  (SizeExpr ? toTypeDependence(SizeExpr->getDependence())
231  : TypeDependence::None)),
232  Context(Context), ElementType(ElementType), SizeExpr(SizeExpr), Loc(Loc) {
233  VectorTypeBits.VecKind = VecKind;
234 }
235 
236 void DependentVectorType::Profile(llvm::FoldingSetNodeID &ID,
237  const ASTContext &Context,
238  QualType ElementType, const Expr *SizeExpr,
239  VectorType::VectorKind VecKind) {
240  ID.AddPointer(ElementType.getAsOpaquePtr());
241  ID.AddInteger(VecKind);
242  SizeExpr->Profile(ID, Context, true);
243 }
244 
245 DependentSizedExtVectorType::DependentSizedExtVectorType(
246  const ASTContext &Context, QualType ElementType, QualType can,
247  Expr *SizeExpr, SourceLocation loc)
248  : Type(DependentSizedExtVector, can,
249  TypeDependence::DependentInstantiation |
250  ElementType->getDependence() |
251  (SizeExpr ? toTypeDependence(SizeExpr->getDependence())
252  : TypeDependence::None)),
253  Context(Context), SizeExpr(SizeExpr), ElementType(ElementType), loc(loc) {
254 }
255 
256 void
257 DependentSizedExtVectorType::Profile(llvm::FoldingSetNodeID &ID,
258  const ASTContext &Context,
259  QualType ElementType, Expr *SizeExpr) {
260  ID.AddPointer(ElementType.getAsOpaquePtr());
261  SizeExpr->Profile(ID, Context, true);
262 }
263 
264 DependentAddressSpaceType::DependentAddressSpaceType(const ASTContext &Context,
265  QualType PointeeType,
266  QualType can,
267  Expr *AddrSpaceExpr,
268  SourceLocation loc)
269  : Type(DependentAddressSpace, can,
270  TypeDependence::DependentInstantiation |
271  PointeeType->getDependence() |
272  (AddrSpaceExpr ? toTypeDependence(AddrSpaceExpr->getDependence())
273  : TypeDependence::None)),
274  Context(Context), AddrSpaceExpr(AddrSpaceExpr), PointeeType(PointeeType),
275  loc(loc) {}
276 
277 void DependentAddressSpaceType::Profile(llvm::FoldingSetNodeID &ID,
278  const ASTContext &Context,
279  QualType PointeeType,
280  Expr *AddrSpaceExpr) {
281  ID.AddPointer(PointeeType.getAsOpaquePtr());
282  AddrSpaceExpr->Profile(ID, Context, true);
283 }
284 
286  const Expr *RowExpr, const Expr *ColumnExpr)
287  : Type(tc, canonType,
288  (RowExpr ? (matrixType->getDependence() | TypeDependence::Dependent |
289  TypeDependence::Instantiation |
290  (matrixType->isVariablyModifiedType()
291  ? TypeDependence::VariablyModified
292  : TypeDependence::None) |
293  (matrixType->containsUnexpandedParameterPack() ||
294  (RowExpr &&
295  RowExpr->containsUnexpandedParameterPack()) ||
296  (ColumnExpr &&
297  ColumnExpr->containsUnexpandedParameterPack())
298  ? TypeDependence::UnexpandedPack
299  : TypeDependence::None))
300  : matrixType->getDependence())),
301  ElementType(matrixType) {}
302 
304  unsigned nColumns, QualType canonType)
305  : ConstantMatrixType(ConstantMatrix, matrixType, nRows, nColumns,
306  canonType) {}
307 
309  unsigned nRows, unsigned nColumns,
310  QualType canonType)
311  : MatrixType(tc, matrixType, canonType), NumRows(nRows),
312  NumColumns(nColumns) {}
313 
314 DependentSizedMatrixType::DependentSizedMatrixType(
315  const ASTContext &CTX, QualType ElementType, QualType CanonicalType,
316  Expr *RowExpr, Expr *ColumnExpr, SourceLocation loc)
317  : MatrixType(DependentSizedMatrix, ElementType, CanonicalType, RowExpr,
318  ColumnExpr),
319  Context(CTX), RowExpr(RowExpr), ColumnExpr(ColumnExpr), loc(loc) {}
320 
321 void DependentSizedMatrixType::Profile(llvm::FoldingSetNodeID &ID,
322  const ASTContext &CTX,
323  QualType ElementType, Expr *RowExpr,
324  Expr *ColumnExpr) {
325  ID.AddPointer(ElementType.getAsOpaquePtr());
326  RowExpr->Profile(ID, CTX, true);
327  ColumnExpr->Profile(ID, CTX, true);
328 }
329 
330 VectorType::VectorType(QualType vecType, unsigned nElements, QualType canonType,
331  VectorKind vecKind)
332  : VectorType(Vector, vecType, nElements, canonType, vecKind) {}
333 
334 VectorType::VectorType(TypeClass tc, QualType vecType, unsigned nElements,
335  QualType canonType, VectorKind vecKind)
336  : Type(tc, canonType, vecType->getDependence()), ElementType(vecType) {
337  VectorTypeBits.VecKind = vecKind;
338  VectorTypeBits.NumElements = nElements;
339 }
340 
341 BitIntType::BitIntType(bool IsUnsigned, unsigned NumBits)
342  : Type(BitInt, QualType{}, TypeDependence::None), IsUnsigned(IsUnsigned),
343  NumBits(NumBits) {}
344 
346  bool IsUnsigned, Expr *NumBitsExpr)
347  : Type(DependentBitInt, QualType{},
348  toTypeDependence(NumBitsExpr->getDependence())),
349  Context(Context), ExprAndUnsigned(NumBitsExpr, IsUnsigned) {}
350 
352  return ExprAndUnsigned.getInt();
353 }
354 
356  return ExprAndUnsigned.getPointer();
357 }
358 
359 void DependentBitIntType::Profile(llvm::FoldingSetNodeID &ID,
360  const ASTContext &Context, bool IsUnsigned,
361  Expr *NumBitsExpr) {
362  ID.AddBoolean(IsUnsigned);
363  NumBitsExpr->Profile(ID, Context, true);
364 }
365 
366 /// getArrayElementTypeNoTypeQual - If this is an array type, return the
367 /// element type of the array, potentially with type qualifiers missing.
368 /// This method should never be used when type qualifiers are meaningful.
370  // If this is directly an array type, return it.
371  if (const auto *ATy = dyn_cast<ArrayType>(this))
372  return ATy->getElementType().getTypePtr();
373 
374  // If the canonical form of this type isn't the right kind, reject it.
375  if (!isa<ArrayType>(CanonicalType))
376  return nullptr;
377 
378  // If this is a typedef for an array type, strip the typedef off without
379  // losing all typedef information.
380  return cast<ArrayType>(getUnqualifiedDesugaredType())
381  ->getElementType().getTypePtr();
382 }
383 
384 /// getDesugaredType - Return the specified type with any "sugar" removed from
385 /// the type. This takes off typedefs, typeof's etc. If the outer level of
386 /// the type is already concrete, it returns it unmodified. This is similar
387 /// to getting the canonical type, but it doesn't remove *all* typedefs. For
388 /// example, it returns "T*" as "T*", (not as "int*"), because the pointer is
389 /// concrete.
392  return Context.getQualifiedType(split.Ty, split.Quals);
393 }
394 
395 QualType QualType::getSingleStepDesugaredTypeImpl(QualType type,
396  const ASTContext &Context) {
397  SplitQualType split = type.split();
399  return Context.getQualifiedType(desugar, split.Quals);
400 }
401 
402 // Check that no type class is polymorphic. LLVM style RTTI should be used
403 // instead. If absolutely needed an exception can still be added here by
404 // defining the appropriate macro (but please don't do this).
405 #define TYPE(CLASS, BASE) \
406  static_assert(!std::is_polymorphic<CLASS##Type>::value, \
407  #CLASS "Type should not be polymorphic!");
408 #include "clang/AST/TypeNodes.inc"
409 
410 // Check that no type class has a non-trival destructor. Types are
411 // allocated with the BumpPtrAllocator from ASTContext and therefore
412 // their destructor is not executed.
413 //
414 // FIXME: ConstantArrayType is not trivially destructible because of its
415 // APInt member. It should be replaced in favor of ASTContext allocation.
416 #define TYPE(CLASS, BASE) \
417  static_assert(std::is_trivially_destructible<CLASS##Type>::value || \
418  std::is_same<CLASS##Type, ConstantArrayType>::value, \
419  #CLASS "Type should be trivially destructible!");
420 #include "clang/AST/TypeNodes.inc"
421 
423  switch (getTypeClass()) {
424 #define ABSTRACT_TYPE(Class, Parent)
425 #define TYPE(Class, Parent) \
426  case Type::Class: { \
427  const auto *ty = cast<Class##Type>(this); \
428  if (!ty->isSugared()) return QualType(ty, 0); \
429  return ty->desugar(); \
430  }
431 #include "clang/AST/TypeNodes.inc"
432  }
433  llvm_unreachable("bad type kind!");
434 }
435 
438 
439  QualType Cur = T;
440  while (true) {
441  const Type *CurTy = Qs.strip(Cur);
442  switch (CurTy->getTypeClass()) {
443 #define ABSTRACT_TYPE(Class, Parent)
444 #define TYPE(Class, Parent) \
445  case Type::Class: { \
446  const auto *Ty = cast<Class##Type>(CurTy); \
447  if (!Ty->isSugared()) \
448  return SplitQualType(Ty, Qs); \
449  Cur = Ty->desugar(); \
450  break; \
451  }
452 #include "clang/AST/TypeNodes.inc"
453  }
454  }
455 }
456 
457 SplitQualType QualType::getSplitUnqualifiedTypeImpl(QualType type) {
458  SplitQualType split = type.split();
459 
460  // All the qualifiers we've seen so far.
461  Qualifiers quals = split.Quals;
462 
463  // The last type node we saw with any nodes inside it.
464  const Type *lastTypeWithQuals = split.Ty;
465 
466  while (true) {
467  QualType next;
468 
469  // Do a single-step desugar, aborting the loop if the type isn't
470  // sugared.
471  switch (split.Ty->getTypeClass()) {
472 #define ABSTRACT_TYPE(Class, Parent)
473 #define TYPE(Class, Parent) \
474  case Type::Class: { \
475  const auto *ty = cast<Class##Type>(split.Ty); \
476  if (!ty->isSugared()) goto done; \
477  next = ty->desugar(); \
478  break; \
479  }
480 #include "clang/AST/TypeNodes.inc"
481  }
482 
483  // Otherwise, split the underlying type. If that yields qualifiers,
484  // update the information.
485  split = next.split();
486  if (!split.Quals.empty()) {
487  lastTypeWithQuals = split.Ty;
489  }
490  }
491 
492  done:
493  return SplitQualType(lastTypeWithQuals, quals);
494 }
495 
497  // FIXME: this seems inherently un-qualifiers-safe.
498  while (const auto *PT = T->getAs<ParenType>())
499  T = PT->getInnerType();
500  return T;
501 }
502 
503 /// This will check for a T (which should be a Type which can act as
504 /// sugar, such as a TypedefType) by removing any existing sugar until it
505 /// reaches a T or a non-sugared type.
506 template<typename T> static const T *getAsSugar(const Type *Cur) {
507  while (true) {
508  if (const auto *Sugar = dyn_cast<T>(Cur))
509  return Sugar;
510  switch (Cur->getTypeClass()) {
511 #define ABSTRACT_TYPE(Class, Parent)
512 #define TYPE(Class, Parent) \
513  case Type::Class: { \
514  const auto *Ty = cast<Class##Type>(Cur); \
515  if (!Ty->isSugared()) return 0; \
516  Cur = Ty->desugar().getTypePtr(); \
517  break; \
518  }
519 #include "clang/AST/TypeNodes.inc"
520  }
521  }
522 }
523 
524 template <> const TypedefType *Type::getAs() const {
525  return getAsSugar<TypedefType>(this);
526 }
527 
528 template <> const TemplateSpecializationType *Type::getAs() const {
529  return getAsSugar<TemplateSpecializationType>(this);
530 }
531 
532 template <> const AttributedType *Type::getAs() const {
533  return getAsSugar<AttributedType>(this);
534 }
535 
536 /// getUnqualifiedDesugaredType - Pull any qualifiers and syntactic
537 /// sugar off the given type. This should produce an object of the
538 /// same dynamic type as the canonical type.
540  const Type *Cur = this;
541 
542  while (true) {
543  switch (Cur->getTypeClass()) {
544 #define ABSTRACT_TYPE(Class, Parent)
545 #define TYPE(Class, Parent) \
546  case Class: { \
547  const auto *Ty = cast<Class##Type>(Cur); \
548  if (!Ty->isSugared()) return Cur; \
549  Cur = Ty->desugar().getTypePtr(); \
550  break; \
551  }
552 #include "clang/AST/TypeNodes.inc"
553  }
554  }
555 }
556 
557 bool Type::isClassType() const {
558  if (const auto *RT = getAs<RecordType>())
559  return RT->getDecl()->isClass();
560  return false;
561 }
562 
563 bool Type::isStructureType() const {
564  if (const auto *RT = getAs<RecordType>())
565  return RT->getDecl()->isStruct();
566  return false;
567 }
568 
570  if (const auto *RT = getAs<RecordType>())
571  return RT->getDecl()->hasAttr<ObjCBoxableAttr>();
572  return false;
573 }
574 
575 bool Type::isInterfaceType() const {
576  if (const auto *RT = getAs<RecordType>())
577  return RT->getDecl()->isInterface();
578  return false;
579 }
580 
582  if (const auto *RT = getAs<RecordType>()) {
583  RecordDecl *RD = RT->getDecl();
584  return RD->isStruct() || RD->isClass() || RD->isInterface();
585  }
586  return false;
587 }
588 
590  if (const auto *PT = getAs<PointerType>())
591  return PT->getPointeeType()->isVoidType();
592  return false;
593 }
594 
595 bool Type::isUnionType() const {
596  if (const auto *RT = getAs<RecordType>())
597  return RT->getDecl()->isUnion();
598  return false;
599 }
600 
601 bool Type::isComplexType() const {
602  if (const auto *CT = dyn_cast<ComplexType>(CanonicalType))
603  return CT->getElementType()->isFloatingType();
604  return false;
605 }
606 
608  // Check for GCC complex integer extension.
609  return getAsComplexIntegerType();
610 }
611 
613  if (const auto *ET = getAs<EnumType>())
614  return ET->getDecl()->isScoped();
615  return false;
616 }
617 
619  if (const auto *Complex = getAs<ComplexType>())
620  if (Complex->getElementType()->isIntegerType())
621  return Complex;
622  return nullptr;
623 }
624 
626  if (const auto *PT = getAs<PointerType>())
627  return PT->getPointeeType();
628  if (const auto *OPT = getAs<ObjCObjectPointerType>())
629  return OPT->getPointeeType();
630  if (const auto *BPT = getAs<BlockPointerType>())
631  return BPT->getPointeeType();
632  if (const auto *RT = getAs<ReferenceType>())
633  return RT->getPointeeType();
634  if (const auto *MPT = getAs<MemberPointerType>())
635  return MPT->getPointeeType();
636  if (const auto *DT = getAs<DecayedType>())
637  return DT->getPointeeType();
638  return {};
639 }
640 
642  // If this is directly a structure type, return it.
643  if (const auto *RT = dyn_cast<RecordType>(this)) {
644  if (RT->getDecl()->isStruct())
645  return RT;
646  }
647 
648  // If the canonical form of this type isn't the right kind, reject it.
649  if (const auto *RT = dyn_cast<RecordType>(CanonicalType)) {
650  if (!RT->getDecl()->isStruct())
651  return nullptr;
652 
653  // If this is a typedef for a structure type, strip the typedef off without
654  // losing all typedef information.
655  return cast<RecordType>(getUnqualifiedDesugaredType());
656  }
657  return nullptr;
658 }
659 
661  // If this is directly a union type, return it.
662  if (const auto *RT = dyn_cast<RecordType>(this)) {
663  if (RT->getDecl()->isUnion())
664  return RT;
665  }
666 
667  // If the canonical form of this type isn't the right kind, reject it.
668  if (const auto *RT = dyn_cast<RecordType>(CanonicalType)) {
669  if (!RT->getDecl()->isUnion())
670  return nullptr;
671 
672  // If this is a typedef for a union type, strip the typedef off without
673  // losing all typedef information.
674  return cast<RecordType>(getUnqualifiedDesugaredType());
675  }
676 
677  return nullptr;
678 }
679 
681  const ObjCObjectType *&bound) const {
682  bound = nullptr;
683 
684  const auto *OPT = getAs<ObjCObjectPointerType>();
685  if (!OPT)
686  return false;
687 
688  // Easy case: id.
689  if (OPT->isObjCIdType())
690  return true;
691 
692  // If it's not a __kindof type, reject it now.
693  if (!OPT->isKindOfType())
694  return false;
695 
696  // If it's Class or qualified Class, it's not an object type.
697  if (OPT->isObjCClassType() || OPT->isObjCQualifiedClassType())
698  return false;
699 
700  // Figure out the type bound for the __kindof type.
701  bound = OPT->getObjectType()->stripObjCKindOfTypeAndQuals(ctx)
702  ->getAs<ObjCObjectType>();
703  return true;
704 }
705 
707  const auto *OPT = getAs<ObjCObjectPointerType>();
708  if (!OPT)
709  return false;
710 
711  // Easy case: Class.
712  if (OPT->isObjCClassType())
713  return true;
714 
715  // If it's not a __kindof type, reject it now.
716  if (!OPT->isKindOfType())
717  return false;
718 
719  // If it's Class or qualified Class, it's a class __kindof type.
720  return OPT->isObjCClassType() || OPT->isObjCQualifiedClassType();
721 }
722 
723 ObjCTypeParamType::ObjCTypeParamType(const ObjCTypeParamDecl *D, QualType can,
725  : Type(ObjCTypeParam, can, toSemanticDependence(can->getDependence())),
726  OTPDecl(const_cast<ObjCTypeParamDecl *>(D)) {
727  initialize(protocols);
728 }
729 
731  ArrayRef<QualType> typeArgs,
733  bool isKindOf)
734  : Type(ObjCObject, Canonical, Base->getDependence()), BaseType(Base) {
735  ObjCObjectTypeBits.IsKindOf = isKindOf;
736 
737  ObjCObjectTypeBits.NumTypeArgs = typeArgs.size();
738  assert(getTypeArgsAsWritten().size() == typeArgs.size() &&
739  "bitfield overflow in type argument count");
740  if (!typeArgs.empty())
741  memcpy(getTypeArgStorage(), typeArgs.data(),
742  typeArgs.size() * sizeof(QualType));
743 
744  for (auto typeArg : typeArgs) {
745  addDependence(typeArg->getDependence() & ~TypeDependence::VariablyModified);
746  }
747  // Initialize the protocol qualifiers. The protocol storage is known
748  // after we set number of type arguments.
749  initialize(protocols);
750 }
751 
753  // If we have type arguments written here, the type is specialized.
754  if (ObjCObjectTypeBits.NumTypeArgs > 0)
755  return true;
756 
757  // Otherwise, check whether the base type is specialized.
758  if (const auto objcObject = getBaseType()->getAs<ObjCObjectType>()) {
759  // Terminate when we reach an interface type.
760  if (isa<ObjCInterfaceType>(objcObject))
761  return false;
762 
763  return objcObject->isSpecialized();
764  }
765 
766  // Not specialized.
767  return false;
768 }
769 
771  // We have type arguments written on this type.
773  return getTypeArgsAsWritten();
774 
775  // Look at the base type, which might have type arguments.
776  if (const auto objcObject = getBaseType()->getAs<ObjCObjectType>()) {
777  // Terminate when we reach an interface type.
778  if (isa<ObjCInterfaceType>(objcObject))
779  return {};
780 
781  return objcObject->getTypeArgs();
782  }
783 
784  // No type arguments.
785  return {};
786 }
787 
789  if (isKindOfTypeAsWritten())
790  return true;
791 
792  // Look at the base type, which might have type arguments.
793  if (const auto objcObject = getBaseType()->getAs<ObjCObjectType>()) {
794  // Terminate when we reach an interface type.
795  if (isa<ObjCInterfaceType>(objcObject))
796  return false;
797 
798  return objcObject->isKindOfType();
799  }
800 
801  // Not a "__kindof" type.
802  return false;
803 }
804 
806  const ASTContext &ctx) const {
807  if (!isKindOfType() && qual_empty())
808  return QualType(this, 0);
809 
810  // Recursively strip __kindof.
811  SplitQualType splitBaseType = getBaseType().split();
812  QualType baseType(splitBaseType.Ty, 0);
813  if (const auto *baseObj = splitBaseType.Ty->getAs<ObjCObjectType>())
814  baseType = baseObj->stripObjCKindOfTypeAndQuals(ctx);
815 
816  return ctx.getObjCObjectType(ctx.getQualifiedType(baseType,
817  splitBaseType.Quals),
819  /*protocols=*/{},
820  /*isKindOf=*/false);
821 }
822 
825  if (ObjCInterfaceDecl *Def = Canon->getDefinition())
826  return Def;
827  return Canon;
828 }
829 
831  const ASTContext &ctx) const {
832  if (!isKindOfType() && qual_empty())
833  return this;
834 
837 }
838 
839 namespace {
840 
841 /// Visitor used to perform a simple type transformation that does not change
842 /// the semantics of the type.
843 template <typename Derived>
844 struct SimpleTransformVisitor : public TypeVisitor<Derived, QualType> {
845  ASTContext &Ctx;
846 
847  QualType recurse(QualType type) {
848  // Split out the qualifiers from the type.
849  SplitQualType splitType = type.split();
850 
851  // Visit the type itself.
852  QualType result = static_cast<Derived *>(this)->Visit(splitType.Ty);
853  if (result.isNull())
854  return result;
855 
856  // Reconstruct the transformed type by applying the local qualifiers
857  // from the split type.
858  return Ctx.getQualifiedType(result, splitType.Quals);
859  }
860 
861 public:
862  explicit SimpleTransformVisitor(ASTContext &ctx) : Ctx(ctx) {}
863 
864  // None of the clients of this transformation can occur where
865  // there are dependent types, so skip dependent types.
866 #define TYPE(Class, Base)
867 #define DEPENDENT_TYPE(Class, Base) \
868  QualType Visit##Class##Type(const Class##Type *T) { return QualType(T, 0); }
869 #include "clang/AST/TypeNodes.inc"
870 
871 #define TRIVIAL_TYPE_CLASS(Class) \
872  QualType Visit##Class##Type(const Class##Type *T) { return QualType(T, 0); }
873 #define SUGARED_TYPE_CLASS(Class) \
874  QualType Visit##Class##Type(const Class##Type *T) { \
875  if (!T->isSugared()) \
876  return QualType(T, 0); \
877  QualType desugaredType = recurse(T->desugar()); \
878  if (desugaredType.isNull()) \
879  return {}; \
880  if (desugaredType.getAsOpaquePtr() == T->desugar().getAsOpaquePtr()) \
881  return QualType(T, 0); \
882  return desugaredType; \
883  }
884 
885  TRIVIAL_TYPE_CLASS(Builtin)
886 
887  QualType VisitComplexType(const ComplexType *T) {
888  QualType elementType = recurse(T->getElementType());
889  if (elementType.isNull())
890  return {};
891 
892  if (elementType.getAsOpaquePtr() == T->getElementType().getAsOpaquePtr())
893  return QualType(T, 0);
894 
895  return Ctx.getComplexType(elementType);
896  }
897 
898  QualType VisitPointerType(const PointerType *T) {
899  QualType pointeeType = recurse(T->getPointeeType());
900  if (pointeeType.isNull())
901  return {};
902 
903  if (pointeeType.getAsOpaquePtr() == T->getPointeeType().getAsOpaquePtr())
904  return QualType(T, 0);
905 
906  return Ctx.getPointerType(pointeeType);
907  }
908 
909  QualType VisitBlockPointerType(const BlockPointerType *T) {
910  QualType pointeeType = recurse(T->getPointeeType());
911  if (pointeeType.isNull())
912  return {};
913 
914  if (pointeeType.getAsOpaquePtr() == T->getPointeeType().getAsOpaquePtr())
915  return QualType(T, 0);
916 
917  return Ctx.getBlockPointerType(pointeeType);
918  }
919 
920  QualType VisitLValueReferenceType(const LValueReferenceType *T) {
921  QualType pointeeType = recurse(T->getPointeeTypeAsWritten());
922  if (pointeeType.isNull())
923  return {};
924 
925  if (pointeeType.getAsOpaquePtr()
927  return QualType(T, 0);
928 
929  return Ctx.getLValueReferenceType(pointeeType, T->isSpelledAsLValue());
930  }
931 
932  QualType VisitRValueReferenceType(const RValueReferenceType *T) {
933  QualType pointeeType = recurse(T->getPointeeTypeAsWritten());
934  if (pointeeType.isNull())
935  return {};
936 
937  if (pointeeType.getAsOpaquePtr()
939  return QualType(T, 0);
940 
941  return Ctx.getRValueReferenceType(pointeeType);
942  }
943 
944  QualType VisitMemberPointerType(const MemberPointerType *T) {
945  QualType pointeeType = recurse(T->getPointeeType());
946  if (pointeeType.isNull())
947  return {};
948 
949  if (pointeeType.getAsOpaquePtr() == T->getPointeeType().getAsOpaquePtr())
950  return QualType(T, 0);
951 
952  return Ctx.getMemberPointerType(pointeeType, T->getClass());
953  }
954 
955  QualType VisitConstantArrayType(const ConstantArrayType *T) {
956  QualType elementType = recurse(T->getElementType());
957  if (elementType.isNull())
958  return {};
959 
960  if (elementType.getAsOpaquePtr() == T->getElementType().getAsOpaquePtr())
961  return QualType(T, 0);
962 
963  return Ctx.getConstantArrayType(elementType, T->getSize(), T->getSizeExpr(),
964  T->getSizeModifier(),
966  }
967 
968  QualType VisitVariableArrayType(const VariableArrayType *T) {
969  QualType elementType = recurse(T->getElementType());
970  if (elementType.isNull())
971  return {};
972 
973  if (elementType.getAsOpaquePtr() == T->getElementType().getAsOpaquePtr())
974  return QualType(T, 0);
975 
976  return Ctx.getVariableArrayType(elementType, T->getSizeExpr(),
977  T->getSizeModifier(),
979  T->getBracketsRange());
980  }
981 
982  QualType VisitIncompleteArrayType(const IncompleteArrayType *T) {
983  QualType elementType = recurse(T->getElementType());
984  if (elementType.isNull())
985  return {};
986 
987  if (elementType.getAsOpaquePtr() == T->getElementType().getAsOpaquePtr())
988  return QualType(T, 0);
989 
990  return Ctx.getIncompleteArrayType(elementType, T->getSizeModifier(),
992  }
993 
994  QualType VisitVectorType(const VectorType *T) {
995  QualType elementType = recurse(T->getElementType());
996  if (elementType.isNull())
997  return {};
998 
999  if (elementType.getAsOpaquePtr() == T->getElementType().getAsOpaquePtr())
1000  return QualType(T, 0);
1001 
1002  return Ctx.getVectorType(elementType, T->getNumElements(),
1003  T->getVectorKind());
1004  }
1005 
1006  QualType VisitExtVectorType(const ExtVectorType *T) {
1007  QualType elementType = recurse(T->getElementType());
1008  if (elementType.isNull())
1009  return {};
1010 
1011  if (elementType.getAsOpaquePtr() == T->getElementType().getAsOpaquePtr())
1012  return QualType(T, 0);
1013 
1014  return Ctx.getExtVectorType(elementType, T->getNumElements());
1015  }
1016 
1017  QualType VisitConstantMatrixType(const ConstantMatrixType *T) {
1018  QualType elementType = recurse(T->getElementType());
1019  if (elementType.isNull())
1020  return {};
1021  if (elementType.getAsOpaquePtr() == T->getElementType().getAsOpaquePtr())
1022  return QualType(T, 0);
1023 
1024  return Ctx.getConstantMatrixType(elementType, T->getNumRows(),
1025  T->getNumColumns());
1026  }
1027 
1028  QualType VisitFunctionNoProtoType(const FunctionNoProtoType *T) {
1029  QualType returnType = recurse(T->getReturnType());
1030  if (returnType.isNull())
1031  return {};
1032 
1033  if (returnType.getAsOpaquePtr() == T->getReturnType().getAsOpaquePtr())
1034  return QualType(T, 0);
1035 
1036  return Ctx.getFunctionNoProtoType(returnType, T->getExtInfo());
1037  }
1038 
1039  QualType VisitFunctionProtoType(const FunctionProtoType *T) {
1040  QualType returnType = recurse(T->getReturnType());
1041  if (returnType.isNull())
1042  return {};
1043 
1044  // Transform parameter types.
1045  SmallVector<QualType, 4> paramTypes;
1046  bool paramChanged = false;
1047  for (auto paramType : T->getParamTypes()) {
1048  QualType newParamType = recurse(paramType);
1049  if (newParamType.isNull())
1050  return {};
1051 
1052  if (newParamType.getAsOpaquePtr() != paramType.getAsOpaquePtr())
1053  paramChanged = true;
1054 
1055  paramTypes.push_back(newParamType);
1056  }
1057 
1058  // Transform extended info.
1060  bool exceptionChanged = false;
1061  if (info.ExceptionSpec.Type == EST_Dynamic) {
1062  SmallVector<QualType, 4> exceptionTypes;
1063  for (auto exceptionType : info.ExceptionSpec.Exceptions) {
1064  QualType newExceptionType = recurse(exceptionType);
1065  if (newExceptionType.isNull())
1066  return {};
1067 
1068  if (newExceptionType.getAsOpaquePtr() != exceptionType.getAsOpaquePtr())
1069  exceptionChanged = true;
1070 
1071  exceptionTypes.push_back(newExceptionType);
1072  }
1073 
1074  if (exceptionChanged) {
1075  info.ExceptionSpec.Exceptions =
1076  llvm::makeArrayRef(exceptionTypes).copy(Ctx);
1077  }
1078  }
1079 
1080  if (returnType.getAsOpaquePtr() == T->getReturnType().getAsOpaquePtr() &&
1081  !paramChanged && !exceptionChanged)
1082  return QualType(T, 0);
1083 
1084  return Ctx.getFunctionType(returnType, paramTypes, info);
1085  }
1086 
1087  QualType VisitParenType(const ParenType *T) {
1088  QualType innerType = recurse(T->getInnerType());
1089  if (innerType.isNull())
1090  return {};
1091 
1092  if (innerType.getAsOpaquePtr() == T->getInnerType().getAsOpaquePtr())
1093  return QualType(T, 0);
1094 
1095  return Ctx.getParenType(innerType);
1096  }
1097 
1098  SUGARED_TYPE_CLASS(Typedef)
1099  SUGARED_TYPE_CLASS(ObjCTypeParam)
1100  SUGARED_TYPE_CLASS(MacroQualified)
1101 
1102  QualType VisitAdjustedType(const AdjustedType *T) {
1103  QualType originalType = recurse(T->getOriginalType());
1104  if (originalType.isNull())
1105  return {};
1106 
1107  QualType adjustedType = recurse(T->getAdjustedType());
1108  if (adjustedType.isNull())
1109  return {};
1110 
1111  if (originalType.getAsOpaquePtr()
1112  == T->getOriginalType().getAsOpaquePtr() &&
1113  adjustedType.getAsOpaquePtr() == T->getAdjustedType().getAsOpaquePtr())
1114  return QualType(T, 0);
1115 
1116  return Ctx.getAdjustedType(originalType, adjustedType);
1117  }
1118 
1119  QualType VisitDecayedType(const DecayedType *T) {
1120  QualType originalType = recurse(T->getOriginalType());
1121  if (originalType.isNull())
1122  return {};
1123 
1124  if (originalType.getAsOpaquePtr()
1125  == T->getOriginalType().getAsOpaquePtr())
1126  return QualType(T, 0);
1127 
1128  return Ctx.getDecayedType(originalType);
1129  }
1130 
1131  SUGARED_TYPE_CLASS(TypeOfExpr)
1132  SUGARED_TYPE_CLASS(TypeOf)
1133  SUGARED_TYPE_CLASS(Decltype)
1134  SUGARED_TYPE_CLASS(UnaryTransform)
1135  TRIVIAL_TYPE_CLASS(Record)
1136  TRIVIAL_TYPE_CLASS(Enum)
1137 
1138  // FIXME: Non-trivial to implement, but important for C++
1139  SUGARED_TYPE_CLASS(Elaborated)
1140 
1141  QualType VisitAttributedType(const AttributedType *T) {
1142  QualType modifiedType = recurse(T->getModifiedType());
1143  if (modifiedType.isNull())
1144  return {};
1145 
1146  QualType equivalentType = recurse(T->getEquivalentType());
1147  if (equivalentType.isNull())
1148  return {};
1149 
1150  if (modifiedType.getAsOpaquePtr()
1151  == T->getModifiedType().getAsOpaquePtr() &&
1152  equivalentType.getAsOpaquePtr()
1154  return QualType(T, 0);
1155 
1156  return Ctx.getAttributedType(T->getAttrKind(), modifiedType,
1157  equivalentType);
1158  }
1159 
1160  QualType VisitSubstTemplateTypeParmType(const SubstTemplateTypeParmType *T) {
1161  QualType replacementType = recurse(T->getReplacementType());
1162  if (replacementType.isNull())
1163  return {};
1164 
1165  if (replacementType.getAsOpaquePtr()
1167  return QualType(T, 0);
1168 
1170  replacementType);
1171  }
1172 
1173  // FIXME: Non-trivial to implement, but important for C++
1174  SUGARED_TYPE_CLASS(TemplateSpecialization)
1175 
1176  QualType VisitAutoType(const AutoType *T) {
1177  if (!T->isDeduced())
1178  return QualType(T, 0);
1179 
1180  QualType deducedType = recurse(T->getDeducedType());
1181  if (deducedType.isNull())
1182  return {};
1183 
1184  if (deducedType.getAsOpaquePtr()
1185  == T->getDeducedType().getAsOpaquePtr())
1186  return QualType(T, 0);
1187 
1188  return Ctx.getAutoType(deducedType, T->getKeyword(),
1189  T->isDependentType(), /*IsPack=*/false,
1192  }
1193 
1194  QualType VisitObjCObjectType(const ObjCObjectType *T) {
1195  QualType baseType = recurse(T->getBaseType());
1196  if (baseType.isNull())
1197  return {};
1198 
1199  // Transform type arguments.
1200  bool typeArgChanged = false;
1201  SmallVector<QualType, 4> typeArgs;
1202  for (auto typeArg : T->getTypeArgsAsWritten()) {
1203  QualType newTypeArg = recurse(typeArg);
1204  if (newTypeArg.isNull())
1205  return {};
1206 
1207  if (newTypeArg.getAsOpaquePtr() != typeArg.getAsOpaquePtr())
1208  typeArgChanged = true;
1209 
1210  typeArgs.push_back(newTypeArg);
1211  }
1212 
1213  if (baseType.getAsOpaquePtr() == T->getBaseType().getAsOpaquePtr() &&
1214  !typeArgChanged)
1215  return QualType(T, 0);
1216 
1217  return Ctx.getObjCObjectType(baseType, typeArgs,
1218  llvm::makeArrayRef(T->qual_begin(),
1219  T->getNumProtocols()),
1220  T->isKindOfTypeAsWritten());
1221  }
1222 
1223  TRIVIAL_TYPE_CLASS(ObjCInterface)
1224 
1225  QualType VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
1226  QualType pointeeType = recurse(T->getPointeeType());
1227  if (pointeeType.isNull())
1228  return {};
1229 
1230  if (pointeeType.getAsOpaquePtr()
1231  == T->getPointeeType().getAsOpaquePtr())
1232  return QualType(T, 0);
1233 
1234  return Ctx.getObjCObjectPointerType(pointeeType);
1235  }
1236 
1237  QualType VisitAtomicType(const AtomicType *T) {
1238  QualType valueType = recurse(T->getValueType());
1239  if (valueType.isNull())
1240  return {};
1241 
1242  if (valueType.getAsOpaquePtr()
1243  == T->getValueType().getAsOpaquePtr())
1244  return QualType(T, 0);
1245 
1246  return Ctx.getAtomicType(valueType);
1247  }
1248 
1249 #undef TRIVIAL_TYPE_CLASS
1250 #undef SUGARED_TYPE_CLASS
1251 };
1252 
1253 struct SubstObjCTypeArgsVisitor
1254  : public SimpleTransformVisitor<SubstObjCTypeArgsVisitor> {
1255  using BaseType = SimpleTransformVisitor<SubstObjCTypeArgsVisitor>;
1256 
1257  ArrayRef<QualType> TypeArgs;
1258  ObjCSubstitutionContext SubstContext;
1259 
1260  SubstObjCTypeArgsVisitor(ASTContext &ctx, ArrayRef<QualType> typeArgs,
1261  ObjCSubstitutionContext context)
1262  : BaseType(ctx), TypeArgs(typeArgs), SubstContext(context) {}
1263 
1264  QualType VisitObjCTypeParamType(const ObjCTypeParamType *OTPTy) {
1265  // Replace an Objective-C type parameter reference with the corresponding
1266  // type argument.
1267  ObjCTypeParamDecl *typeParam = OTPTy->getDecl();
1268  // If we have type arguments, use them.
1269  if (!TypeArgs.empty()) {
1270  QualType argType = TypeArgs[typeParam->getIndex()];
1271  if (OTPTy->qual_empty())
1272  return argType;
1273 
1274  // Apply protocol lists if exists.
1275  bool hasError;
1277  protocolsVec.append(OTPTy->qual_begin(), OTPTy->qual_end());
1278  ArrayRef<ObjCProtocolDecl *> protocolsToApply = protocolsVec;
1279  return Ctx.applyObjCProtocolQualifiers(
1280  argType, protocolsToApply, hasError, true/*allowOnPointerType*/);
1281  }
1282 
1283  switch (SubstContext) {
1287  // Substitute the bound.
1288  return typeParam->getUnderlyingType();
1289 
1292  // Substitute the __kindof form of the underlying type.
1293  const auto *objPtr =
1295 
1296  // __kindof types, id, and Class don't need an additional
1297  // __kindof.
1298  if (objPtr->isKindOfType() || objPtr->isObjCIdOrClassType())
1299  return typeParam->getUnderlyingType();
1300 
1301  // Add __kindof.
1302  const auto *obj = objPtr->getObjectType();
1303  QualType resultTy = Ctx.getObjCObjectType(
1304  obj->getBaseType(), obj->getTypeArgsAsWritten(), obj->getProtocols(),
1305  /*isKindOf=*/true);
1306 
1307  // Rebuild object pointer type.
1308  return Ctx.getObjCObjectPointerType(resultTy);
1309  }
1310  }
1311  llvm_unreachable("Unexpected ObjCSubstitutionContext!");
1312  }
1313 
1314  QualType VisitFunctionType(const FunctionType *funcType) {
1315  // If we have a function type, update the substitution context
1316  // appropriately.
1317 
1318  //Substitute result type.
1319  QualType returnType = funcType->getReturnType().substObjCTypeArgs(
1320  Ctx, TypeArgs, ObjCSubstitutionContext::Result);
1321  if (returnType.isNull())
1322  return {};
1323 
1324  // Handle non-prototyped functions, which only substitute into the result
1325  // type.
1326  if (isa<FunctionNoProtoType>(funcType)) {
1327  // If the return type was unchanged, do nothing.
1328  if (returnType.getAsOpaquePtr() ==
1329  funcType->getReturnType().getAsOpaquePtr())
1330  return BaseType::VisitFunctionType(funcType);
1331 
1332  // Otherwise, build a new type.
1333  return Ctx.getFunctionNoProtoType(returnType, funcType->getExtInfo());
1334  }
1335 
1336  const auto *funcProtoType = cast<FunctionProtoType>(funcType);
1337 
1338  // Transform parameter types.
1339  SmallVector<QualType, 4> paramTypes;
1340  bool paramChanged = false;
1341  for (auto paramType : funcProtoType->getParamTypes()) {
1342  QualType newParamType = paramType.substObjCTypeArgs(
1343  Ctx, TypeArgs, ObjCSubstitutionContext::Parameter);
1344  if (newParamType.isNull())
1345  return {};
1346 
1347  if (newParamType.getAsOpaquePtr() != paramType.getAsOpaquePtr())
1348  paramChanged = true;
1349 
1350  paramTypes.push_back(newParamType);
1351  }
1352 
1353  // Transform extended info.
1354  FunctionProtoType::ExtProtoInfo info = funcProtoType->getExtProtoInfo();
1355  bool exceptionChanged = false;
1356  if (info.ExceptionSpec.Type == EST_Dynamic) {
1357  SmallVector<QualType, 4> exceptionTypes;
1358  for (auto exceptionType : info.ExceptionSpec.Exceptions) {
1359  QualType newExceptionType = exceptionType.substObjCTypeArgs(
1360  Ctx, TypeArgs, ObjCSubstitutionContext::Ordinary);
1361  if (newExceptionType.isNull())
1362  return {};
1363 
1364  if (newExceptionType.getAsOpaquePtr() != exceptionType.getAsOpaquePtr())
1365  exceptionChanged = true;
1366 
1367  exceptionTypes.push_back(newExceptionType);
1368  }
1369 
1370  if (exceptionChanged) {
1371  info.ExceptionSpec.Exceptions =
1372  llvm::makeArrayRef(exceptionTypes).copy(Ctx);
1373  }
1374  }
1375 
1376  if (returnType.getAsOpaquePtr() ==
1377  funcProtoType->getReturnType().getAsOpaquePtr() &&
1378  !paramChanged && !exceptionChanged)
1379  return BaseType::VisitFunctionType(funcType);
1380 
1381  return Ctx.getFunctionType(returnType, paramTypes, info);
1382  }
1383 
1384  QualType VisitObjCObjectType(const ObjCObjectType *objcObjectType) {
1385  // Substitute into the type arguments of a specialized Objective-C object
1386  // type.
1387  if (objcObjectType->isSpecializedAsWritten()) {
1388  SmallVector<QualType, 4> newTypeArgs;
1389  bool anyChanged = false;
1390  for (auto typeArg : objcObjectType->getTypeArgsAsWritten()) {
1391  QualType newTypeArg = typeArg.substObjCTypeArgs(
1392  Ctx, TypeArgs, ObjCSubstitutionContext::Ordinary);
1393  if (newTypeArg.isNull())
1394  return {};
1395 
1396  if (newTypeArg.getAsOpaquePtr() != typeArg.getAsOpaquePtr()) {
1397  // If we're substituting based on an unspecialized context type,
1398  // produce an unspecialized type.
1399  ArrayRef<ObjCProtocolDecl *> protocols(
1400  objcObjectType->qual_begin(), objcObjectType->getNumProtocols());
1401  if (TypeArgs.empty() &&
1402  SubstContext != ObjCSubstitutionContext::Superclass) {
1403  return Ctx.getObjCObjectType(
1404  objcObjectType->getBaseType(), {}, protocols,
1405  objcObjectType->isKindOfTypeAsWritten());
1406  }
1407 
1408  anyChanged = true;
1409  }
1410 
1411  newTypeArgs.push_back(newTypeArg);
1412  }
1413 
1414  if (anyChanged) {
1415  ArrayRef<ObjCProtocolDecl *> protocols(
1416  objcObjectType->qual_begin(), objcObjectType->getNumProtocols());
1417  return Ctx.getObjCObjectType(objcObjectType->getBaseType(), newTypeArgs,
1418  protocols,
1419  objcObjectType->isKindOfTypeAsWritten());
1420  }
1421  }
1422 
1423  return BaseType::VisitObjCObjectType(objcObjectType);
1424  }
1425 
1426  QualType VisitAttributedType(const AttributedType *attrType) {
1427  QualType newType = BaseType::VisitAttributedType(attrType);
1428  if (newType.isNull())
1429  return {};
1430 
1431  const auto *newAttrType = dyn_cast<AttributedType>(newType.getTypePtr());
1432  if (!newAttrType || newAttrType->getAttrKind() != attr::ObjCKindOf)
1433  return newType;
1434 
1435  // Find out if it's an Objective-C object or object pointer type;
1436  QualType newEquivType = newAttrType->getEquivalentType();
1437  const ObjCObjectPointerType *ptrType =
1438  newEquivType->getAs<ObjCObjectPointerType>();
1439  const ObjCObjectType *objType = ptrType
1440  ? ptrType->getObjectType()
1441  : newEquivType->getAs<ObjCObjectType>();
1442  if (!objType)
1443  return newType;
1444 
1445  // Rebuild the "equivalent" type, which pushes __kindof down into
1446  // the object type.
1447  newEquivType = Ctx.getObjCObjectType(
1448  objType->getBaseType(), objType->getTypeArgsAsWritten(),
1449  objType->getProtocols(),
1450  // There is no need to apply kindof on an unqualified id type.
1451  /*isKindOf=*/objType->isObjCUnqualifiedId() ? false : true);
1452 
1453  // If we started with an object pointer type, rebuild it.
1454  if (ptrType)
1455  newEquivType = Ctx.getObjCObjectPointerType(newEquivType);
1456 
1457  // Rebuild the attributed type.
1458  return Ctx.getAttributedType(newAttrType->getAttrKind(),
1459  newAttrType->getModifiedType(), newEquivType);
1460  }
1461 };
1462 
1463 struct StripObjCKindOfTypeVisitor
1464  : public SimpleTransformVisitor<StripObjCKindOfTypeVisitor> {
1465  using BaseType = SimpleTransformVisitor<StripObjCKindOfTypeVisitor>;
1466 
1467  explicit StripObjCKindOfTypeVisitor(ASTContext &ctx) : BaseType(ctx) {}
1468 
1469  QualType VisitObjCObjectType(const ObjCObjectType *objType) {
1470  if (!objType->isKindOfType())
1471  return BaseType::VisitObjCObjectType(objType);
1472 
1473  QualType baseType = objType->getBaseType().stripObjCKindOfType(Ctx);
1474  return Ctx.getObjCObjectType(baseType, objType->getTypeArgsAsWritten(),
1475  objType->getProtocols(),
1476  /*isKindOf=*/false);
1477  }
1478 };
1479 
1480 } // namespace
1481 
1482 /// Substitute the given type arguments for Objective-C type
1483 /// parameters within the given type, recursively.
1485  ArrayRef<QualType> typeArgs,
1486  ObjCSubstitutionContext context) const {
1487  SubstObjCTypeArgsVisitor visitor(ctx, typeArgs, context);
1488  return visitor.recurse(*this);
1489 }
1490 
1492  const DeclContext *dc,
1493  ObjCSubstitutionContext context) const {
1494  if (auto subs = objectType->getObjCSubstitutions(dc))
1495  return substObjCTypeArgs(dc->getParentASTContext(), *subs, context);
1496 
1497  return *this;
1498 }
1499 
1501  // FIXME: Because ASTContext::getAttributedType() is non-const.
1502  auto &ctx = const_cast<ASTContext &>(constCtx);
1503  StripObjCKindOfTypeVisitor visitor(ctx);
1504  return visitor.recurse(*this);
1505 }
1506 
1508  if (const auto AT = getTypePtr()->getAs<AtomicType>())
1509  return AT->getValueType().getUnqualifiedType();
1510  return getUnqualifiedType();
1511 }
1512 
1514  const DeclContext *dc) const {
1515  // Look through method scopes.
1516  if (const auto method = dyn_cast<ObjCMethodDecl>(dc))
1517  dc = method->getDeclContext();
1518 
1519  // Find the class or category in which the type we're substituting
1520  // was declared.
1521  const auto *dcClassDecl = dyn_cast<ObjCInterfaceDecl>(dc);
1522  const ObjCCategoryDecl *dcCategoryDecl = nullptr;
1523  ObjCTypeParamList *dcTypeParams = nullptr;
1524  if (dcClassDecl) {
1525  // If the class does not have any type parameters, there's no
1526  // substitution to do.
1527  dcTypeParams = dcClassDecl->getTypeParamList();
1528  if (!dcTypeParams)
1529  return None;
1530  } else {
1531  // If we are in neither a class nor a category, there's no
1532  // substitution to perform.
1533  dcCategoryDecl = dyn_cast<ObjCCategoryDecl>(dc);
1534  if (!dcCategoryDecl)
1535  return None;
1536 
1537  // If the category does not have any type parameters, there's no
1538  // substitution to do.
1539  dcTypeParams = dcCategoryDecl->getTypeParamList();
1540  if (!dcTypeParams)
1541  return None;
1542 
1543  dcClassDecl = dcCategoryDecl->getClassInterface();
1544  if (!dcClassDecl)
1545  return None;
1546  }
1547  assert(dcTypeParams && "No substitutions to perform");
1548  assert(dcClassDecl && "No class context");
1549 
1550  // Find the underlying object type.
1551  const ObjCObjectType *objectType;
1552  if (const auto *objectPointerType = getAs<ObjCObjectPointerType>()) {
1553  objectType = objectPointerType->getObjectType();
1554  } else if (getAs<BlockPointerType>()) {
1555  ASTContext &ctx = dc->getParentASTContext();
1556  objectType = ctx.getObjCObjectType(ctx.ObjCBuiltinIdTy, {}, {})
1557  ->castAs<ObjCObjectType>();
1558  } else {
1559  objectType = getAs<ObjCObjectType>();
1560  }
1561 
1562  /// Extract the class from the receiver object type.
1563  ObjCInterfaceDecl *curClassDecl = objectType ? objectType->getInterface()
1564  : nullptr;
1565  if (!curClassDecl) {
1566  // If we don't have a context type (e.g., this is "id" or some
1567  // variant thereof), substitute the bounds.
1568  return llvm::ArrayRef<QualType>();
1569  }
1570 
1571  // Follow the superclass chain until we've mapped the receiver type
1572  // to the same class as the context.
1573  while (curClassDecl != dcClassDecl) {
1574  // Map to the superclass type.
1575  QualType superType = objectType->getSuperClassType();
1576  if (superType.isNull()) {
1577  objectType = nullptr;
1578  break;
1579  }
1580 
1581  objectType = superType->castAs<ObjCObjectType>();
1582  curClassDecl = objectType->getInterface();
1583  }
1584 
1585  // If we don't have a receiver type, or the receiver type does not
1586  // have type arguments, substitute in the defaults.
1587  if (!objectType || objectType->isUnspecialized()) {
1588  return llvm::ArrayRef<QualType>();
1589  }
1590 
1591  // The receiver type has the type arguments we want.
1592  return objectType->getTypeArgs();
1593 }
1594 
1596  if (auto *IfaceT = getAsObjCInterfaceType()) {
1597  if (auto *ID = IfaceT->getInterface()) {
1598  if (ID->getTypeParamList())
1599  return true;
1600  }
1601  }
1602 
1603  return false;
1604 }
1605 
1607  // Retrieve the class declaration for this type. If there isn't one
1608  // (e.g., this is some variant of "id" or "Class"), then there is no
1609  // superclass type.
1610  ObjCInterfaceDecl *classDecl = getInterface();
1611  if (!classDecl) {
1612  CachedSuperClassType.setInt(true);
1613  return;
1614  }
1615 
1616  // Extract the superclass type.
1617  const ObjCObjectType *superClassObjTy = classDecl->getSuperClassType();
1618  if (!superClassObjTy) {
1619  CachedSuperClassType.setInt(true);
1620  return;
1621  }
1622 
1623  ObjCInterfaceDecl *superClassDecl = superClassObjTy->getInterface();
1624  if (!superClassDecl) {
1625  CachedSuperClassType.setInt(true);
1626  return;
1627  }
1628 
1629  // If the superclass doesn't have type parameters, then there is no
1630  // substitution to perform.
1631  QualType superClassType(superClassObjTy, 0);
1632  ObjCTypeParamList *superClassTypeParams = superClassDecl->getTypeParamList();
1633  if (!superClassTypeParams) {
1634  CachedSuperClassType.setPointerAndInt(
1635  superClassType->castAs<ObjCObjectType>(), true);
1636  return;
1637  }
1638 
1639  // If the superclass reference is unspecialized, return it.
1640  if (superClassObjTy->isUnspecialized()) {
1641  CachedSuperClassType.setPointerAndInt(superClassObjTy, true);
1642  return;
1643  }
1644 
1645  // If the subclass is not parameterized, there aren't any type
1646  // parameters in the superclass reference to substitute.
1647  ObjCTypeParamList *typeParams = classDecl->getTypeParamList();
1648  if (!typeParams) {
1649  CachedSuperClassType.setPointerAndInt(
1650  superClassType->castAs<ObjCObjectType>(), true);
1651  return;
1652  }
1653 
1654  // If the subclass type isn't specialized, return the unspecialized
1655  // superclass.
1656  if (isUnspecialized()) {
1657  QualType unspecializedSuper
1658  = classDecl->getASTContext().getObjCInterfaceType(
1659  superClassObjTy->getInterface());
1660  CachedSuperClassType.setPointerAndInt(
1661  unspecializedSuper->castAs<ObjCObjectType>(),
1662  true);
1663  return;
1664  }
1665 
1666  // Substitute the provided type arguments into the superclass type.
1667  ArrayRef<QualType> typeArgs = getTypeArgs();
1668  assert(typeArgs.size() == typeParams->size());
1669  CachedSuperClassType.setPointerAndInt(
1670  superClassType.substObjCTypeArgs(classDecl->getASTContext(), typeArgs,
1672  ->castAs<ObjCObjectType>(),
1673  true);
1674 }
1675 
1677  if (auto interfaceDecl = getObjectType()->getInterface()) {
1678  return interfaceDecl->getASTContext().getObjCInterfaceType(interfaceDecl)
1680  }
1681 
1682  return nullptr;
1683 }
1684 
1686  QualType superObjectType = getObjectType()->getSuperClassType();
1687  if (superObjectType.isNull())
1688  return superObjectType;
1689 
1691  return ctx.getObjCObjectPointerType(superObjectType);
1692 }
1693 
1695  // There is no sugar for ObjCObjectType's, just return the canonical
1696  // type pointer if it is the right class. There is no typedef information to
1697  // return and these cannot be Address-space qualified.
1698  if (const auto *T = getAs<ObjCObjectType>())
1699  if (T->getNumProtocols() && T->getInterface())
1700  return T;
1701  return nullptr;
1702 }
1703 
1705  return getAsObjCQualifiedInterfaceType() != nullptr;
1706 }
1707 
1709  // There is no sugar for ObjCQualifiedIdType's, just return the canonical
1710  // type pointer if it is the right class.
1711  if (const auto *OPT = getAs<ObjCObjectPointerType>()) {
1712  if (OPT->isObjCQualifiedIdType())
1713  return OPT;
1714  }
1715  return nullptr;
1716 }
1717 
1719  // There is no sugar for ObjCQualifiedClassType's, just return the canonical
1720  // type pointer if it is the right class.
1721  if (const auto *OPT = getAs<ObjCObjectPointerType>()) {
1722  if (OPT->isObjCQualifiedClassType())
1723  return OPT;
1724  }
1725  return nullptr;
1726 }
1727 
1729  if (const auto *OT = getAs<ObjCObjectType>()) {
1730  if (OT->getInterface())
1731  return OT;
1732  }
1733  return nullptr;
1734 }
1735 
1737  if (const auto *OPT = getAs<ObjCObjectPointerType>()) {
1738  if (OPT->getInterfaceType())
1739  return OPT;
1740  }
1741  return nullptr;
1742 }
1743 
1745  QualType PointeeType;
1746  if (const auto *PT = getAs<PointerType>())
1747  PointeeType = PT->getPointeeType();
1748  else if (const auto *RT = getAs<ReferenceType>())
1749  PointeeType = RT->getPointeeType();
1750  else
1751  return nullptr;
1752 
1753  if (const auto *RT = PointeeType->getAs<RecordType>())
1754  return dyn_cast<CXXRecordDecl>(RT->getDecl());
1755 
1756  return nullptr;
1757 }
1758 
1760  return dyn_cast_or_null<CXXRecordDecl>(getAsTagDecl());
1761 }
1762 
1764  return dyn_cast_or_null<RecordDecl>(getAsTagDecl());
1765 }
1766 
1768  if (const auto *TT = getAs<TagType>())
1769  return TT->getDecl();
1770  if (const auto *Injected = getAs<InjectedClassNameType>())
1771  return Injected->getDecl();
1772 
1773  return nullptr;
1774 }
1775 
1776 bool Type::hasAttr(attr::Kind AK) const {
1777  const Type *Cur = this;
1778  while (const auto *AT = Cur->getAs<AttributedType>()) {
1779  if (AT->getAttrKind() == AK)
1780  return true;
1781  Cur = AT->getEquivalentType().getTypePtr();
1782  }
1783  return false;
1784 }
1785 
1786 namespace {
1787 
1788  class GetContainedDeducedTypeVisitor :
1789  public TypeVisitor<GetContainedDeducedTypeVisitor, Type*> {
1790  bool Syntactic;
1791 
1792  public:
1793  GetContainedDeducedTypeVisitor(bool Syntactic = false)
1794  : Syntactic(Syntactic) {}
1795 
1797 
1798  Type *Visit(QualType T) {
1799  if (T.isNull())
1800  return nullptr;
1801  return Visit(T.getTypePtr());
1802  }
1803 
1804  // The deduced type itself.
1805  Type *VisitDeducedType(const DeducedType *AT) {
1806  return const_cast<DeducedType*>(AT);
1807  }
1808 
1809  // Only these types can contain the desired 'auto' type.
1810  Type *VisitSubstTemplateTypeParmType(const SubstTemplateTypeParmType *T) {
1811  return Visit(T->getReplacementType());
1812  }
1813 
1814  Type *VisitElaboratedType(const ElaboratedType *T) {
1815  return Visit(T->getNamedType());
1816  }
1817 
1818  Type *VisitPointerType(const PointerType *T) {
1819  return Visit(T->getPointeeType());
1820  }
1821 
1822  Type *VisitBlockPointerType(const BlockPointerType *T) {
1823  return Visit(T->getPointeeType());
1824  }
1825 
1826  Type *VisitReferenceType(const ReferenceType *T) {
1827  return Visit(T->getPointeeTypeAsWritten());
1828  }
1829 
1830  Type *VisitMemberPointerType(const MemberPointerType *T) {
1831  return Visit(T->getPointeeType());
1832  }
1833 
1834  Type *VisitArrayType(const ArrayType *T) {
1835  return Visit(T->getElementType());
1836  }
1837 
1838  Type *VisitDependentSizedExtVectorType(
1839  const DependentSizedExtVectorType *T) {
1840  return Visit(T->getElementType());
1841  }
1842 
1843  Type *VisitVectorType(const VectorType *T) {
1844  return Visit(T->getElementType());
1845  }
1846 
1847  Type *VisitDependentSizedMatrixType(const DependentSizedMatrixType *T) {
1848  return Visit(T->getElementType());
1849  }
1850 
1851  Type *VisitConstantMatrixType(const ConstantMatrixType *T) {
1852  return Visit(T->getElementType());
1853  }
1854 
1855  Type *VisitFunctionProtoType(const FunctionProtoType *T) {
1856  if (Syntactic && T->hasTrailingReturn())
1857  return const_cast<FunctionProtoType*>(T);
1858  return VisitFunctionType(T);
1859  }
1860 
1861  Type *VisitFunctionType(const FunctionType *T) {
1862  return Visit(T->getReturnType());
1863  }
1864 
1865  Type *VisitParenType(const ParenType *T) {
1866  return Visit(T->getInnerType());
1867  }
1868 
1869  Type *VisitAttributedType(const AttributedType *T) {
1870  return Visit(T->getModifiedType());
1871  }
1872 
1873  Type *VisitMacroQualifiedType(const MacroQualifiedType *T) {
1874  return Visit(T->getUnderlyingType());
1875  }
1876 
1877  Type *VisitAdjustedType(const AdjustedType *T) {
1878  return Visit(T->getOriginalType());
1879  }
1880 
1881  Type *VisitPackExpansionType(const PackExpansionType *T) {
1882  return Visit(T->getPattern());
1883  }
1884  };
1885 
1886 } // namespace
1887 
1889  return cast_or_null<DeducedType>(
1890  GetContainedDeducedTypeVisitor().Visit(this));
1891 }
1892 
1894  return isa_and_nonnull<FunctionType>(
1895  GetContainedDeducedTypeVisitor(true).Visit(this));
1896 }
1897 
1899  if (const auto *VT = dyn_cast<VectorType>(CanonicalType))
1900  return VT->getElementType()->isIntegerType();
1901  if (CanonicalType->isVLSTBuiltinType()) {
1902  const auto *VT = cast<BuiltinType>(CanonicalType);
1903  return VT->getKind() == BuiltinType::SveBool ||
1904  (VT->getKind() >= BuiltinType::SveInt8 &&
1905  VT->getKind() <= BuiltinType::SveUint64);
1906  }
1907 
1908  return isIntegerType();
1909 }
1910 
1911 /// Determine whether this type is an integral type.
1912 ///
1913 /// This routine determines whether the given type is an integral type per
1914 /// C++ [basic.fundamental]p7. Although the C standard does not define the
1915 /// term "integral type", it has a similar term "integer type", and in C++
1916 /// the two terms are equivalent. However, C's "integer type" includes
1917 /// enumeration types, while C++'s "integer type" does not. The \c ASTContext
1918 /// parameter is used to determine whether we should be following the C or
1919 /// C++ rules when determining whether this type is an integral/integer type.
1920 ///
1921 /// For cases where C permits "an integer type" and C++ permits "an integral
1922 /// type", use this routine.
1923 ///
1924 /// For cases where C permits "an integer type" and C++ permits "an integral
1925 /// or enumeration type", use \c isIntegralOrEnumerationType() instead.
1926 ///
1927 /// \param Ctx The context in which this type occurs.
1928 ///
1929 /// \returns true if the type is considered an integral type, false otherwise.
1930 bool Type::isIntegralType(const ASTContext &Ctx) const {
1931  if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
1932  return BT->getKind() >= BuiltinType::Bool &&
1933  BT->getKind() <= BuiltinType::Int128;
1934 
1935  // Complete enum types are integral in C.
1936  if (!Ctx.getLangOpts().CPlusPlus)
1937  if (const auto *ET = dyn_cast<EnumType>(CanonicalType))
1938  return ET->getDecl()->isComplete();
1939 
1940  return isBitIntType();
1941 }
1942 
1944  if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
1945  return BT->getKind() >= BuiltinType::Bool &&
1946  BT->getKind() <= BuiltinType::Int128;
1947 
1948  if (isBitIntType())
1949  return true;
1950 
1951  return isUnscopedEnumerationType();
1952 }
1953 
1955  if (const auto *ET = dyn_cast<EnumType>(CanonicalType))
1956  return !ET->getDecl()->isScoped();
1957 
1958  return false;
1959 }
1960 
1961 bool Type::isCharType() const {
1962  if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
1963  return BT->getKind() == BuiltinType::Char_U ||
1964  BT->getKind() == BuiltinType::UChar ||
1965  BT->getKind() == BuiltinType::Char_S ||
1966  BT->getKind() == BuiltinType::SChar;
1967  return false;
1968 }
1969 
1970 bool Type::isWideCharType() const {
1971  if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
1972  return BT->getKind() == BuiltinType::WChar_S ||
1973  BT->getKind() == BuiltinType::WChar_U;
1974  return false;
1975 }
1976 
1977 bool Type::isChar8Type() const {
1978  if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType))
1979  return BT->getKind() == BuiltinType::Char8;
1980  return false;
1981 }
1982 
1983 bool Type::isChar16Type() const {
1984  if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
1985  return BT->getKind() == BuiltinType::Char16;
1986  return false;
1987 }
1988 
1989 bool Type::isChar32Type() const {
1990  if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
1991  return BT->getKind() == BuiltinType::Char32;
1992  return false;
1993 }
1994 
1995 /// Determine whether this type is any of the built-in character
1996 /// types.
1998  const auto *BT = dyn_cast<BuiltinType>(CanonicalType);
1999  if (!BT) return false;
2000  switch (BT->getKind()) {
2001  default: return false;
2002  case BuiltinType::Char_U:
2003  case BuiltinType::UChar:
2004  case BuiltinType::WChar_U:
2005  case BuiltinType::Char8:
2006  case BuiltinType::Char16:
2007  case BuiltinType::Char32:
2008  case BuiltinType::Char_S:
2009  case BuiltinType::SChar:
2010  case BuiltinType::WChar_S:
2011  return true;
2012  }
2013 }
2014 
2015 /// isSignedIntegerType - Return true if this is an integer type that is
2016 /// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..],
2017 /// an enum decl which has a signed representation
2019  if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) {
2020  return BT->getKind() >= BuiltinType::Char_S &&
2021  BT->getKind() <= BuiltinType::Int128;
2022  }
2023 
2024  if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType)) {
2025  // Incomplete enum types are not treated as integer types.
2026  // FIXME: In C++, enum types are never integer types.
2027  if (ET->getDecl()->isComplete() && !ET->getDecl()->isScoped())
2028  return ET->getDecl()->getIntegerType()->isSignedIntegerType();
2029  }
2030 
2031  if (const auto *IT = dyn_cast<BitIntType>(CanonicalType))
2032  return IT->isSigned();
2033  if (const auto *IT = dyn_cast<DependentBitIntType>(CanonicalType))
2034  return IT->isSigned();
2035 
2036  return false;
2037 }
2038 
2040  if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) {
2041  return BT->getKind() >= BuiltinType::Char_S &&
2042  BT->getKind() <= BuiltinType::Int128;
2043  }
2044 
2045  if (const auto *ET = dyn_cast<EnumType>(CanonicalType)) {
2046  if (ET->getDecl()->isComplete())
2047  return ET->getDecl()->getIntegerType()->isSignedIntegerType();
2048  }
2049 
2050  if (const auto *IT = dyn_cast<BitIntType>(CanonicalType))
2051  return IT->isSigned();
2052  if (const auto *IT = dyn_cast<DependentBitIntType>(CanonicalType))
2053  return IT->isSigned();
2054 
2055  return false;
2056 }
2057 
2059  if (const auto *VT = dyn_cast<VectorType>(CanonicalType))
2060  return VT->getElementType()->isSignedIntegerOrEnumerationType();
2061  else
2063 }
2064 
2065 /// isUnsignedIntegerType - Return true if this is an integer type that is
2066 /// unsigned, according to C99 6.2.5p6 [which returns true for _Bool], an enum
2067 /// decl which has an unsigned representation
2069  if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) {
2070  return BT->getKind() >= BuiltinType::Bool &&
2071  BT->getKind() <= BuiltinType::UInt128;
2072  }
2073 
2074  if (const auto *ET = dyn_cast<EnumType>(CanonicalType)) {
2075  // Incomplete enum types are not treated as integer types.
2076  // FIXME: In C++, enum types are never integer types.
2077  if (ET->getDecl()->isComplete() && !ET->getDecl()->isScoped())
2078  return ET->getDecl()->getIntegerType()->isUnsignedIntegerType();
2079  }
2080 
2081  if (const auto *IT = dyn_cast<BitIntType>(CanonicalType))
2082  return IT->isUnsigned();
2083  if (const auto *IT = dyn_cast<DependentBitIntType>(CanonicalType))
2084  return IT->isUnsigned();
2085 
2086  return false;
2087 }
2088 
2090  if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) {
2091  return BT->getKind() >= BuiltinType::Bool &&
2092  BT->getKind() <= BuiltinType::UInt128;
2093  }
2094 
2095  if (const auto *ET = dyn_cast<EnumType>(CanonicalType)) {
2096  if (ET->getDecl()->isComplete())
2097  return ET->getDecl()->getIntegerType()->isUnsignedIntegerType();
2098  }
2099 
2100  if (const auto *IT = dyn_cast<BitIntType>(CanonicalType))
2101  return IT->isUnsigned();
2102  if (const auto *IT = dyn_cast<DependentBitIntType>(CanonicalType))
2103  return IT->isUnsigned();
2104 
2105  return false;
2106 }
2107 
2109  if (const auto *VT = dyn_cast<VectorType>(CanonicalType))
2110  return VT->getElementType()->isUnsignedIntegerOrEnumerationType();
2111  if (const auto *VT = dyn_cast<MatrixType>(CanonicalType))
2112  return VT->getElementType()->isUnsignedIntegerOrEnumerationType();
2113  if (CanonicalType->isVLSTBuiltinType()) {
2114  const auto *VT = cast<BuiltinType>(CanonicalType);
2115  return VT->getKind() >= BuiltinType::SveUint8 &&
2116  VT->getKind() <= BuiltinType::SveUint64;
2117  }
2119 }
2120 
2121 bool Type::isFloatingType() const {
2122  if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
2123  return BT->getKind() >= BuiltinType::Half &&
2124  BT->getKind() <= BuiltinType::Ibm128;
2125  if (const auto *CT = dyn_cast<ComplexType>(CanonicalType))
2126  return CT->getElementType()->isFloatingType();
2127  return false;
2128 }
2129 
2131  if (const auto *VT = dyn_cast<VectorType>(CanonicalType))
2132  return VT->getElementType()->isFloatingType();
2133  else
2134  return isFloatingType();
2135 }
2136 
2138  if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
2139  return BT->isFloatingPoint();
2140  return false;
2141 }
2142 
2143 bool Type::isRealType() const {
2144  if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
2145  return BT->getKind() >= BuiltinType::Bool &&
2146  BT->getKind() <= BuiltinType::Ibm128;
2147  if (const auto *ET = dyn_cast<EnumType>(CanonicalType))
2148  return ET->getDecl()->isComplete() && !ET->getDecl()->isScoped();
2149  return isBitIntType();
2150 }
2151 
2153  if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
2154  return BT->getKind() >= BuiltinType::Bool &&
2155  BT->getKind() <= BuiltinType::Ibm128 &&
2156  BT->getKind() != BuiltinType::BFloat16;
2157  if (const auto *ET = dyn_cast<EnumType>(CanonicalType))
2158  // GCC allows forward declaration of enum types (forbid by C99 6.7.2.3p2).
2159  // If a body isn't seen by the time we get here, return false.
2160  //
2161  // C++0x: Enumerations are not arithmetic types. For now, just return
2162  // false for scoped enumerations since that will disable any
2163  // unwanted implicit conversions.
2164  return !ET->getDecl()->isScoped() && ET->getDecl()->isComplete();
2165  return isa<ComplexType>(CanonicalType) || isBitIntType();
2166 }
2167 
2169  assert(isScalarType());
2170 
2171  const Type *T = CanonicalType.getTypePtr();
2172  if (const auto *BT = dyn_cast<BuiltinType>(T)) {
2173  if (BT->getKind() == BuiltinType::Bool) return STK_Bool;
2174  if (BT->getKind() == BuiltinType::NullPtr) return STK_CPointer;
2175  if (BT->isInteger()) return STK_Integral;
2176  if (BT->isFloatingPoint()) return STK_Floating;
2177  if (BT->isFixedPointType()) return STK_FixedPoint;
2178  llvm_unreachable("unknown scalar builtin type");
2179  } else if (isa<PointerType>(T)) {
2180  return STK_CPointer;
2181  } else if (isa<BlockPointerType>(T)) {
2182  return STK_BlockPointer;
2183  } else if (isa<ObjCObjectPointerType>(T)) {
2184  return STK_ObjCObjectPointer;
2185  } else if (isa<MemberPointerType>(T)) {
2186  return STK_MemberPointer;
2187  } else if (isa<EnumType>(T)) {
2188  assert(cast<EnumType>(T)->getDecl()->isComplete());
2189  return STK_Integral;
2190  } else if (const auto *CT = dyn_cast<ComplexType>(T)) {
2191  if (CT->getElementType()->isRealFloatingType())
2192  return STK_FloatingComplex;
2193  return STK_IntegralComplex;
2194  } else if (isBitIntType()) {
2195  return STK_Integral;
2196  }
2197 
2198  llvm_unreachable("unknown scalar type");
2199 }
2200 
2201 /// Determines whether the type is a C++ aggregate type or C
2202 /// aggregate or union type.
2203 ///
2204 /// An aggregate type is an array or a class type (struct, union, or
2205 /// class) that has no user-declared constructors, no private or
2206 /// protected non-static data members, no base classes, and no virtual
2207 /// functions (C++ [dcl.init.aggr]p1). The notion of an aggregate type
2208 /// subsumes the notion of C aggregates (C99 6.2.5p21) because it also
2209 /// includes union types.
2211  if (const auto *Record = dyn_cast<RecordType>(CanonicalType)) {
2212  if (const auto *ClassDecl = dyn_cast<CXXRecordDecl>(Record->getDecl()))
2213  return ClassDecl->isAggregate();
2214 
2215  return true;
2216  }
2217 
2218  return isa<ArrayType>(CanonicalType);
2219 }
2220 
2221 /// isConstantSizeType - Return true if this is not a variable sized type,
2222 /// according to the rules of C99 6.7.5p3. It is not legal to call this on
2223 /// incomplete types or dependent types.
2225  assert(!isIncompleteType() && "This doesn't make sense for incomplete types");
2226  assert(!isDependentType() && "This doesn't make sense for dependent types");
2227  // The VAT must have a size, as it is known to be complete.
2228  return !isa<VariableArrayType>(CanonicalType);
2229 }
2230 
2231 /// isIncompleteType - Return true if this is an incomplete type (C99 6.2.5p1)
2232 /// - a type that can describe objects, but which lacks information needed to
2233 /// determine its size.
2235  if (Def)
2236  *Def = nullptr;
2237 
2238  switch (CanonicalType->getTypeClass()) {
2239  default: return false;
2240  case Builtin:
2241  // Void is the only incomplete builtin type. Per C99 6.2.5p19, it can never
2242  // be completed.
2243  return isVoidType();
2244  case Enum: {
2245  EnumDecl *EnumD = cast<EnumType>(CanonicalType)->getDecl();
2246  if (Def)
2247  *Def = EnumD;
2248  return !EnumD->isComplete();
2249  }
2250  case Record: {
2251  // A tagged type (struct/union/enum/class) is incomplete if the decl is a
2252  // forward declaration, but not a full definition (C99 6.2.5p22).
2253  RecordDecl *Rec = cast<RecordType>(CanonicalType)->getDecl();
2254  if (Def)
2255  *Def = Rec;
2256  return !Rec->isCompleteDefinition();
2257  }
2258  case ConstantArray:
2259  case VariableArray:
2260  // An array is incomplete if its element type is incomplete
2261  // (C++ [dcl.array]p1).
2262  // We don't handle dependent-sized arrays (dependent types are never treated
2263  // as incomplete).
2264  return cast<ArrayType>(CanonicalType)->getElementType()
2265  ->isIncompleteType(Def);
2266  case IncompleteArray:
2267  // An array of unknown size is an incomplete type (C99 6.2.5p22).
2268  return true;
2269  case MemberPointer: {
2270  // Member pointers in the MS ABI have special behavior in
2271  // RequireCompleteType: they attach a MSInheritanceAttr to the CXXRecordDecl
2272  // to indicate which inheritance model to use.
2273  auto *MPTy = cast<MemberPointerType>(CanonicalType);
2274  const Type *ClassTy = MPTy->getClass();
2275  // Member pointers with dependent class types don't get special treatment.
2276  if (ClassTy->isDependentType())
2277  return false;
2278  const CXXRecordDecl *RD = ClassTy->getAsCXXRecordDecl();
2279  ASTContext &Context = RD->getASTContext();
2280  // Member pointers not in the MS ABI don't get special treatment.
2281  if (!Context.getTargetInfo().getCXXABI().isMicrosoft())
2282  return false;
2283  // The inheritance attribute might only be present on the most recent
2284  // CXXRecordDecl, use that one.
2285  RD = RD->getMostRecentNonInjectedDecl();
2286  // Nothing interesting to do if the inheritance attribute is already set.
2287  if (RD->hasAttr<MSInheritanceAttr>())
2288  return false;
2289  return true;
2290  }
2291  case ObjCObject:
2292  return cast<ObjCObjectType>(CanonicalType)->getBaseType()
2293  ->isIncompleteType(Def);
2294  case ObjCInterface: {
2295  // ObjC interfaces are incomplete if they are @class, not @interface.
2296  ObjCInterfaceDecl *Interface
2297  = cast<ObjCInterfaceType>(CanonicalType)->getDecl();
2298  if (Def)
2299  *Def = Interface;
2300  return !Interface->hasDefinition();
2301  }
2302  }
2303 }
2304 
2306  if (const BuiltinType *BT = getAs<BuiltinType>()) {
2307  switch (BT->getKind()) {
2308  // SVE Types
2309 #define SVE_TYPE(Name, Id, SingletonId) case BuiltinType::Id:
2310 #include "clang/Basic/AArch64SVEACLETypes.def"
2311 #define RVV_TYPE(Name, Id, SingletonId) case BuiltinType::Id:
2312 #include "clang/Basic/RISCVVTypes.def"
2313  return true;
2314  default:
2315  return false;
2316  }
2317  }
2318  return false;
2319 }
2320 
2322 
2324  if (const BuiltinType *BT = getAs<BuiltinType>()) {
2325  switch (BT->getKind()) {
2326  case BuiltinType::SveInt8:
2327  case BuiltinType::SveInt16:
2328  case BuiltinType::SveInt32:
2329  case BuiltinType::SveInt64:
2330  case BuiltinType::SveUint8:
2331  case BuiltinType::SveUint16:
2332  case BuiltinType::SveUint32:
2333  case BuiltinType::SveUint64:
2334  case BuiltinType::SveFloat16:
2335  case BuiltinType::SveFloat32:
2336  case BuiltinType::SveFloat64:
2337  case BuiltinType::SveBFloat16:
2338  case BuiltinType::SveBool:
2339  return true;
2340  default:
2341  return false;
2342  }
2343  }
2344  return false;
2345 }
2346 
2348  assert(isVLSTBuiltinType() && "unsupported type!");
2349 
2350  const BuiltinType *BTy = getAs<BuiltinType>();
2351  if (BTy->getKind() == BuiltinType::SveBool)
2352  // Represent predicates as i8 rather than i1 to avoid any layout issues.
2353  // The type is bitcasted to a scalable predicate type when casting between
2354  // scalable and fixed-length vectors.
2355  return Ctx.UnsignedCharTy;
2356  else
2357  return Ctx.getBuiltinVectorTypeInfo(BTy).ElementType;
2358 }
2359 
2360 bool QualType::isPODType(const ASTContext &Context) const {
2361  // C++11 has a more relaxed definition of POD.
2362  if (Context.getLangOpts().CPlusPlus11)
2363  return isCXX11PODType(Context);
2364 
2365  return isCXX98PODType(Context);
2366 }
2367 
2368 bool QualType::isCXX98PODType(const ASTContext &Context) const {
2369  // The compiler shouldn't query this for incomplete types, but the user might.
2370  // We return false for that case. Except for incomplete arrays of PODs, which
2371  // are PODs according to the standard.
2372  if (isNull())
2373  return false;
2374 
2375  if ((*this)->isIncompleteArrayType())
2376  return Context.getBaseElementType(*this).isCXX98PODType(Context);
2377 
2378  if ((*this)->isIncompleteType())
2379  return false;
2380 
2382  return false;
2383 
2384  QualType CanonicalType = getTypePtr()->CanonicalType;
2385  switch (CanonicalType->getTypeClass()) {
2386  // Everything not explicitly mentioned is not POD.
2387  default: return false;
2388  case Type::VariableArray:
2389  case Type::ConstantArray:
2390  // IncompleteArray is handled above.
2391  return Context.getBaseElementType(*this).isCXX98PODType(Context);
2392 
2393  case Type::ObjCObjectPointer:
2394  case Type::BlockPointer:
2395  case Type::Builtin:
2396  case Type::Complex:
2397  case Type::Pointer:
2398  case Type::MemberPointer:
2399  case Type::Vector:
2400  case Type::ExtVector:
2401  case Type::BitInt:
2402  return true;
2403 
2404  case Type::Enum:
2405  return true;
2406 
2407  case Type::Record:
2408  if (const auto *ClassDecl =
2409  dyn_cast<CXXRecordDecl>(cast<RecordType>(CanonicalType)->getDecl()))
2410  return ClassDecl->isPOD();
2411 
2412  // C struct/union is POD.
2413  return true;
2414  }
2415 }
2416 
2417 bool QualType::isTrivialType(const ASTContext &Context) const {
2418  // The compiler shouldn't query this for incomplete types, but the user might.
2419  // We return false for that case. Except for incomplete arrays of PODs, which
2420  // are PODs according to the standard.
2421  if (isNull())
2422  return false;
2423 
2424  if ((*this)->isArrayType())
2425  return Context.getBaseElementType(*this).isTrivialType(Context);
2426 
2427  if ((*this)->isSizelessBuiltinType())
2428  return true;
2429 
2430  // Return false for incomplete types after skipping any incomplete array
2431  // types which are expressly allowed by the standard and thus our API.
2432  if ((*this)->isIncompleteType())
2433  return false;
2434 
2436  return false;
2437 
2438  QualType CanonicalType = getTypePtr()->CanonicalType;
2439  if (CanonicalType->isDependentType())
2440  return false;
2441 
2442  // C++0x [basic.types]p9:
2443  // Scalar types, trivial class types, arrays of such types, and
2444  // cv-qualified versions of these types are collectively called trivial
2445  // types.
2446 
2447  // As an extension, Clang treats vector types as Scalar types.
2448  if (CanonicalType->isScalarType() || CanonicalType->isVectorType())
2449  return true;
2450  if (const auto *RT = CanonicalType->getAs<RecordType>()) {
2451  if (const auto *ClassDecl = dyn_cast<CXXRecordDecl>(RT->getDecl())) {
2452  // C++11 [class]p6:
2453  // A trivial class is a class that has a default constructor,
2454  // has no non-trivial default constructors, and is trivially
2455  // copyable.
2456  return ClassDecl->hasDefaultConstructor() &&
2457  !ClassDecl->hasNonTrivialDefaultConstructor() &&
2458  ClassDecl->isTriviallyCopyable();
2459  }
2460 
2461  return true;
2462  }
2463 
2464  // No other types can match.
2465  return false;
2466 }
2467 
2468 bool QualType::isTriviallyCopyableType(const ASTContext &Context) const {
2469  if ((*this)->isArrayType())
2470  return Context.getBaseElementType(*this).isTriviallyCopyableType(Context);
2471 
2473  return false;
2474 
2475  // C++11 [basic.types]p9 - See Core 2094
2476  // Scalar types, trivially copyable class types, arrays of such types, and
2477  // cv-qualified versions of these types are collectively
2478  // called trivially copyable types.
2479 
2480  QualType CanonicalType = getCanonicalType();
2481  if (CanonicalType->isDependentType())
2482  return false;
2483 
2484  if (CanonicalType->isSizelessBuiltinType())
2485  return true;
2486 
2487  // Return false for incomplete types after skipping any incomplete array types
2488  // which are expressly allowed by the standard and thus our API.
2489  if (CanonicalType->isIncompleteType())
2490  return false;
2491 
2492  // As an extension, Clang treats vector types as Scalar types.
2493  if (CanonicalType->isScalarType() || CanonicalType->isVectorType())
2494  return true;
2495 
2496  if (const auto *RT = CanonicalType->getAs<RecordType>()) {
2497  if (const auto *ClassDecl = dyn_cast<CXXRecordDecl>(RT->getDecl())) {
2498  if (!ClassDecl->isTriviallyCopyable()) return false;
2499  }
2500 
2501  return true;
2502  }
2503 
2504  // No other types can match.
2505  return false;
2506 }
2507 
2509  QualType BaseElementType = Context.getBaseElementType(*this);
2510 
2511  if (BaseElementType->isIncompleteType()) {
2512  return false;
2513  } else if (const auto *RD = BaseElementType->getAsRecordDecl()) {
2514  return RD->canPassInRegisters();
2515  } else {
2517  case PCK_Trivial:
2518  return !isDestructedType();
2519  case PCK_ARCStrong:
2520  return true;
2521  default:
2522  return false;
2523  }
2524  }
2525 }
2526 
2528  return !Context.getLangOpts().ObjCAutoRefCount &&
2529  Context.getLangOpts().ObjCWeak &&
2531 }
2532 
2535 }
2536 
2539 }
2540 
2543 }
2544 
2547  if (const auto *RT =
2548  getTypePtr()->getBaseElementTypeUnsafe()->getAs<RecordType>())
2549  if (RT->getDecl()->isNonTrivialToPrimitiveDefaultInitialize())
2550  return PDIK_Struct;
2551 
2552  switch (getQualifiers().getObjCLifetime()) {
2554  return PDIK_ARCStrong;
2555  case Qualifiers::OCL_Weak:
2556  return PDIK_ARCWeak;
2557  default:
2558  return PDIK_Trivial;
2559  }
2560 }
2561 
2563  if (const auto *RT =
2564  getTypePtr()->getBaseElementTypeUnsafe()->getAs<RecordType>())
2565  if (RT->getDecl()->isNonTrivialToPrimitiveCopy())
2566  return PCK_Struct;
2567 
2568  Qualifiers Qs = getQualifiers();
2569  switch (Qs.getObjCLifetime()) {
2571  return PCK_ARCStrong;
2572  case Qualifiers::OCL_Weak:
2573  return PCK_ARCWeak;
2574  default:
2576  }
2577 }
2578 
2581  return isNonTrivialToPrimitiveCopy();
2582 }
2583 
2584 bool Type::isLiteralType(const ASTContext &Ctx) const {
2585  if (isDependentType())
2586  return false;
2587 
2588  // C++1y [basic.types]p10:
2589  // A type is a literal type if it is:
2590  // -- cv void; or
2591  if (Ctx.getLangOpts().CPlusPlus14 && isVoidType())
2592  return true;
2593 
2594  // C++11 [basic.types]p10:
2595  // A type is a literal type if it is:
2596  // [...]
2597  // -- an array of literal type other than an array of runtime bound; or
2598  if (isVariableArrayType())
2599  return false;
2600  const Type *BaseTy = getBaseElementTypeUnsafe();
2601  assert(BaseTy && "NULL element type");
2602 
2603  // Return false for incomplete types after skipping any incomplete array
2604  // types; those are expressly allowed by the standard and thus our API.
2605  if (BaseTy->isIncompleteType())
2606  return false;
2607 
2608  // C++11 [basic.types]p10:
2609  // A type is a literal type if it is:
2610  // -- a scalar type; or
2611  // As an extension, Clang treats vector types and complex types as
2612  // literal types.
2613  if (BaseTy->isScalarType() || BaseTy->isVectorType() ||
2614  BaseTy->isAnyComplexType())
2615  return true;
2616  // -- a reference type; or
2617  if (BaseTy->isReferenceType())
2618  return true;
2619  // -- a class type that has all of the following properties:
2620  if (const auto *RT = BaseTy->getAs<RecordType>()) {
2621  // -- a trivial destructor,
2622  // -- every constructor call and full-expression in the
2623  // brace-or-equal-initializers for non-static data members (if any)
2624  // is a constant expression,
2625  // -- it is an aggregate type or has at least one constexpr
2626  // constructor or constructor template that is not a copy or move
2627  // constructor, and
2628  // -- all non-static data members and base classes of literal types
2629  //
2630  // We resolve DR1361 by ignoring the second bullet.
2631  if (const auto *ClassDecl = dyn_cast<CXXRecordDecl>(RT->getDecl()))
2632  return ClassDecl->isLiteral();
2633 
2634  return true;
2635  }
2636 
2637  // We treat _Atomic T as a literal type if T is a literal type.
2638  if (const auto *AT = BaseTy->getAs<AtomicType>())
2639  return AT->getValueType()->isLiteralType(Ctx);
2640 
2641  // If this type hasn't been deduced yet, then conservatively assume that
2642  // it'll work out to be a literal type.
2643  if (isa<AutoType>(BaseTy->getCanonicalTypeInternal()))
2644  return true;
2645 
2646  return false;
2647 }
2648 
2650  // C++20 [temp.param]p6:
2651  // A structural type is one of the following:
2652  // -- a scalar type; or
2653  // -- a vector type [Clang extension]; or
2654  if (isScalarType() || isVectorType())
2655  return true;
2656  // -- an lvalue reference type; or
2657  if (isLValueReferenceType())
2658  return true;
2659  // -- a literal class type [...under some conditions]
2660  if (const CXXRecordDecl *RD = getAsCXXRecordDecl())
2661  return RD->isStructural();
2662  return false;
2663 }
2664 
2666  if (isDependentType())
2667  return false;
2668 
2669  // C++0x [basic.types]p9:
2670  // Scalar types, standard-layout class types, arrays of such types, and
2671  // cv-qualified versions of these types are collectively called
2672  // standard-layout types.
2673  const Type *BaseTy = getBaseElementTypeUnsafe();
2674  assert(BaseTy && "NULL element type");
2675 
2676  // Return false for incomplete types after skipping any incomplete array
2677  // types which are expressly allowed by the standard and thus our API.
2678  if (BaseTy->isIncompleteType())
2679  return false;
2680 
2681  // As an extension, Clang treats vector types as Scalar types.
2682  if (BaseTy->isScalarType() || BaseTy->isVectorType()) return true;
2683  if (const auto *RT = BaseTy->getAs<RecordType>()) {
2684  if (const auto *ClassDecl = dyn_cast<CXXRecordDecl>(RT->getDecl()))
2685  if (!ClassDecl->isStandardLayout())
2686  return false;
2687 
2688  // Default to 'true' for non-C++ class types.
2689  // FIXME: This is a bit dubious, but plain C structs should trivially meet
2690  // all the requirements of standard layout classes.
2691  return true;
2692  }
2693 
2694  // No other types can match.
2695  return false;
2696 }
2697 
2698 // This is effectively the intersection of isTrivialType and
2699 // isStandardLayoutType. We implement it directly to avoid redundant
2700 // conversions from a type to a CXXRecordDecl.
2701 bool QualType::isCXX11PODType(const ASTContext &Context) const {
2702  const Type *ty = getTypePtr();
2703  if (ty->isDependentType())
2704  return false;
2705 
2707  return false;
2708 
2709  // C++11 [basic.types]p9:
2710  // Scalar types, POD classes, arrays of such types, and cv-qualified
2711  // versions of these types are collectively called trivial types.
2712  const Type *BaseTy = ty->getBaseElementTypeUnsafe();
2713  assert(BaseTy && "NULL element type");
2714 
2715  if (BaseTy->isSizelessBuiltinType())
2716  return true;
2717 
2718  // Return false for incomplete types after skipping any incomplete array
2719  // types which are expressly allowed by the standard and thus our API.
2720  if (BaseTy->isIncompleteType())
2721  return false;
2722 
2723  // As an extension, Clang treats vector types as Scalar types.
2724  if (BaseTy->isScalarType() || BaseTy->isVectorType()) return true;
2725  if (const auto *RT = BaseTy->getAs<RecordType>()) {
2726  if (const auto *ClassDecl = dyn_cast<CXXRecordDecl>(RT->getDecl())) {
2727  // C++11 [class]p10:
2728  // A POD struct is a non-union class that is both a trivial class [...]
2729  if (!ClassDecl->isTrivial()) return false;
2730 
2731  // C++11 [class]p10:
2732  // A POD struct is a non-union class that is both a trivial class and
2733  // a standard-layout class [...]
2734  if (!ClassDecl->isStandardLayout()) return false;
2735 
2736  // C++11 [class]p10:
2737  // A POD struct is a non-union class that is both a trivial class and
2738  // a standard-layout class, and has no non-static data members of type
2739  // non-POD struct, non-POD union (or array of such types). [...]
2740  //
2741  // We don't directly query the recursive aspect as the requirements for
2742  // both standard-layout classes and trivial classes apply recursively
2743  // already.
2744  }
2745 
2746  return true;
2747  }
2748 
2749  // No other types can match.
2750  return false;
2751 }
2752 
2753 bool Type::isNothrowT() const {
2754  if (const auto *RD = getAsCXXRecordDecl()) {
2755  IdentifierInfo *II = RD->getIdentifier();
2756  if (II && II->isStr("nothrow_t") && RD->isInStdNamespace())
2757  return true;
2758  }
2759  return false;
2760 }
2761 
2762 bool Type::isAlignValT() const {
2763  if (const auto *ET = getAs<EnumType>()) {
2764  IdentifierInfo *II = ET->getDecl()->getIdentifier();
2765  if (II && II->isStr("align_val_t") && ET->getDecl()->isInStdNamespace())
2766  return true;
2767  }
2768  return false;
2769 }
2770 
2771 bool Type::isStdByteType() const {
2772  if (const auto *ET = getAs<EnumType>()) {
2773  IdentifierInfo *II = ET->getDecl()->getIdentifier();
2774  if (II && II->isStr("byte") && ET->getDecl()->isInStdNamespace())
2775  return true;
2776  }
2777  return false;
2778 }
2779 
2781  if (const auto *BT = getAs<BuiltinType>())
2782  switch (BT->getKind()) {
2783  case BuiltinType::Bool:
2784  case BuiltinType::Char_S:
2785  case BuiltinType::Char_U:
2786  case BuiltinType::SChar:
2787  case BuiltinType::UChar:
2788  case BuiltinType::Short:
2789  case BuiltinType::UShort:
2790  case BuiltinType::WChar_S:
2791  case BuiltinType::WChar_U:
2792  case BuiltinType::Char8:
2793  case BuiltinType::Char16:
2794  case BuiltinType::Char32:
2795  return true;
2796  default:
2797  return false;
2798  }
2799 
2800  // Enumerated types are promotable to their compatible integer types
2801  // (C99 6.3.1.1) a.k.a. its underlying type (C++ [conv.prom]p2).
2802  if (const auto *ET = getAs<EnumType>()){
2803  if (this->isDependentType() || ET->getDecl()->getPromotionType().isNull()
2804  || ET->getDecl()->isScoped())
2805  return false;
2806 
2807  return true;
2808  }
2809 
2810  return false;
2811 }
2812 
2814  // Note that this intentionally does not use the canonical type.
2815  switch (getTypeClass()) {
2816  case Builtin:
2817  case Record:
2818  case Enum:
2819  case Typedef:
2820  case Complex:
2821  case TypeOfExpr:
2822  case TypeOf:
2823  case TemplateTypeParm:
2824  case SubstTemplateTypeParm:
2825  case TemplateSpecialization:
2826  case Elaborated:
2827  case DependentName:
2828  case DependentTemplateSpecialization:
2829  case ObjCInterface:
2830  case ObjCObject:
2831  return true;
2832  default:
2833  return false;
2834  }
2835 }
2836 
2839  switch (TypeSpec) {
2840  default: return ETK_None;
2841  case TST_typename: return ETK_Typename;
2842  case TST_class: return ETK_Class;
2843  case TST_struct: return ETK_Struct;
2844  case TST_interface: return ETK_Interface;
2845  case TST_union: return ETK_Union;
2846  case TST_enum: return ETK_Enum;
2847  }
2848 }
2849 
2852  switch(TypeSpec) {
2853  case TST_class: return TTK_Class;
2854  case TST_struct: return TTK_Struct;
2855  case TST_interface: return TTK_Interface;
2856  case TST_union: return TTK_Union;
2857  case TST_enum: return TTK_Enum;
2858  }
2859 
2860  llvm_unreachable("Type specifier is not a tag type kind.");
2861 }
2862 
2865  switch (Kind) {
2866  case TTK_Class: return ETK_Class;
2867  case TTK_Struct: return ETK_Struct;
2868  case TTK_Interface: return ETK_Interface;
2869  case TTK_Union: return ETK_Union;
2870  case TTK_Enum: return ETK_Enum;
2871  }
2872  llvm_unreachable("Unknown tag type kind.");
2873 }
2874 
2877  switch (Keyword) {
2878  case ETK_Class: return TTK_Class;
2879  case ETK_Struct: return TTK_Struct;
2880  case ETK_Interface: return TTK_Interface;
2881  case ETK_Union: return TTK_Union;
2882  case ETK_Enum: return TTK_Enum;
2883  case ETK_None: // Fall through.
2884  case ETK_Typename:
2885  llvm_unreachable("Elaborated type keyword is not a tag type kind.");
2886  }
2887  llvm_unreachable("Unknown elaborated type keyword.");
2888 }
2889 
2890 bool
2892  switch (Keyword) {
2893  case ETK_None:
2894  case ETK_Typename:
2895  return false;
2896  case ETK_Class:
2897  case ETK_Struct:
2898  case ETK_Interface:
2899  case ETK_Union:
2900  case ETK_Enum:
2901  return true;
2902  }
2903  llvm_unreachable("Unknown elaborated type keyword.");
2904 }
2905 
2907  switch (Keyword) {
2908  case ETK_None: return {};
2909  case ETK_Typename: return "typename";
2910  case ETK_Class: return "class";
2911  case ETK_Struct: return "struct";
2912  case ETK_Interface: return "__interface";
2913  case ETK_Union: return "union";
2914  case ETK_Enum: return "enum";
2915  }
2916 
2917  llvm_unreachable("Unknown elaborated type keyword.");
2918 }
2919 
2920 DependentTemplateSpecializationType::DependentTemplateSpecializationType(
2922  const IdentifierInfo *Name, ArrayRef<TemplateArgument> Args, QualType Canon)
2923  : TypeWithKeyword(Keyword, DependentTemplateSpecialization, Canon,
2924  TypeDependence::DependentInstantiation |
2925  (NNS ? toTypeDependence(NNS->getDependence())
2926  : TypeDependence::None)),
2927  NNS(NNS), Name(Name) {
2928  DependentTemplateSpecializationTypeBits.NumArgs = Args.size();
2929  assert((!NNS || NNS->isDependent()) &&
2930  "DependentTemplateSpecializatonType requires dependent qualifier");
2931  TemplateArgument *ArgBuffer = getArgBuffer();
2932  for (const TemplateArgument &Arg : Args) {
2933  addDependence(toTypeDependence(Arg.getDependence() &
2934  TemplateArgumentDependence::UnexpandedPack));
2935 
2936  new (ArgBuffer++) TemplateArgument(Arg);
2937  }
2938 }
2939 
2940 void
2942  const ASTContext &Context,
2943  ElaboratedTypeKeyword Keyword,
2944  NestedNameSpecifier *Qualifier,
2945  const IdentifierInfo *Name,
2947  ID.AddInteger(Keyword);
2948  ID.AddPointer(Qualifier);
2949  ID.AddPointer(Name);
2950  for (const TemplateArgument &Arg : Args)
2951  Arg.Profile(ID, Context);
2952 }
2953 
2955  ElaboratedTypeKeyword Keyword;
2956  if (const auto *Elab = dyn_cast<ElaboratedType>(this))
2957  Keyword = Elab->getKeyword();
2958  else if (const auto *DepName = dyn_cast<DependentNameType>(this))
2959  Keyword = DepName->getKeyword();
2960  else if (const auto *DepTST =
2961  dyn_cast<DependentTemplateSpecializationType>(this))
2962  Keyword = DepTST->getKeyword();
2963  else
2964  return false;
2965 
2966  return TypeWithKeyword::KeywordIsTagTypeKind(Keyword);
2967 }
2968 
2969 const char *Type::getTypeClassName() const {
2970  switch (TypeBits.TC) {
2971 #define ABSTRACT_TYPE(Derived, Base)
2972 #define TYPE(Derived, Base) case Derived: return #Derived;
2973 #include "clang/AST/TypeNodes.inc"
2974  }
2975 
2976  llvm_unreachable("Invalid type class.");
2977 }
2978 
2979 StringRef BuiltinType::getName(const PrintingPolicy &Policy) const {
2980  switch (getKind()) {
2981  case Void:
2982  return "void";
2983  case Bool:
2984  return Policy.Bool ? "bool" : "_Bool";
2985  case Char_S:
2986  return "char";
2987  case Char_U:
2988  return "char";
2989  case SChar:
2990  return "signed char";
2991  case Short:
2992  return "short";
2993  case Int:
2994  return "int";
2995  case Long:
2996  return "long";
2997  case LongLong:
2998  return "long long";
2999  case Int128:
3000  return "__int128";
3001  case UChar:
3002  return "unsigned char";
3003  case UShort:
3004  return "unsigned short";
3005  case UInt:
3006  return "unsigned int";
3007  case ULong:
3008  return "unsigned long";
3009  case ULongLong:
3010  return "unsigned long long";
3011  case UInt128:
3012  return "unsigned __int128";
3013  case Half:
3014  return Policy.Half ? "half" : "__fp16";
3015  case BFloat16:
3016  return "__bf16";
3017  case Float:
3018  return "float";
3019  case Double:
3020  return "double";
3021  case LongDouble:
3022  return "long double";
3023  case ShortAccum:
3024  return "short _Accum";
3025  case Accum:
3026  return "_Accum";
3027  case LongAccum:
3028  return "long _Accum";
3029  case UShortAccum:
3030  return "unsigned short _Accum";
3031  case UAccum:
3032  return "unsigned _Accum";
3033  case ULongAccum:
3034  return "unsigned long _Accum";
3035  case BuiltinType::ShortFract:
3036  return "short _Fract";
3037  case BuiltinType::Fract:
3038  return "_Fract";
3039  case BuiltinType::LongFract:
3040  return "long _Fract";
3041  case BuiltinType::UShortFract:
3042  return "unsigned short _Fract";
3043  case BuiltinType::UFract:
3044  return "unsigned _Fract";
3045  case BuiltinType::ULongFract:
3046  return "unsigned long _Fract";
3047  case BuiltinType::SatShortAccum:
3048  return "_Sat short _Accum";
3049  case BuiltinType::SatAccum:
3050  return "_Sat _Accum";
3051  case BuiltinType::SatLongAccum:
3052  return "_Sat long _Accum";
3053  case BuiltinType::SatUShortAccum:
3054  return "_Sat unsigned short _Accum";
3055  case BuiltinType::SatUAccum:
3056  return "_Sat unsigned _Accum";
3057  case BuiltinType::SatULongAccum:
3058  return "_Sat unsigned long _Accum";
3059  case BuiltinType::SatShortFract:
3060  return "_Sat short _Fract";
3061  case BuiltinType::SatFract:
3062  return "_Sat _Fract";
3063  case BuiltinType::SatLongFract:
3064  return "_Sat long _Fract";
3065  case BuiltinType::SatUShortFract:
3066  return "_Sat unsigned short _Fract";
3067  case BuiltinType::SatUFract:
3068  return "_Sat unsigned _Fract";
3069  case BuiltinType::SatULongFract:
3070  return "_Sat unsigned long _Fract";
3071  case Float16:
3072  return "_Float16";
3073  case Float128:
3074  return "__float128";
3075  case Ibm128:
3076  return "__ibm128";
3077  case WChar_S:
3078  case WChar_U:
3079  return Policy.MSWChar ? "__wchar_t" : "wchar_t";
3080  case Char8:
3081  return "char8_t";
3082  case Char16:
3083  return "char16_t";
3084  case Char32:
3085  return "char32_t";
3086  case NullPtr:
3087  return "std::nullptr_t";
3088  case Overload:
3089  return "<overloaded function type>";
3090  case BoundMember:
3091  return "<bound member function type>";
3092  case PseudoObject:
3093  return "<pseudo-object type>";
3094  case Dependent:
3095  return "<dependent type>";
3096  case UnknownAny:
3097  return "<unknown type>";
3098  case ARCUnbridgedCast:
3099  return "<ARC unbridged cast type>";
3100  case BuiltinFn:
3101  return "<builtin fn type>";
3102  case ObjCId:
3103  return "id";
3104  case ObjCClass:
3105  return "Class";
3106  case ObjCSel:
3107  return "SEL";
3108 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
3109  case Id: \
3110  return "__" #Access " " #ImgType "_t";
3111 #include "clang/Basic/OpenCLImageTypes.def"
3112  case OCLSampler:
3113  return "sampler_t";
3114  case OCLEvent:
3115  return "event_t";
3116  case OCLClkEvent:
3117  return "clk_event_t";
3118  case OCLQueue:
3119  return "queue_t";
3120  case OCLReserveID:
3121  return "reserve_id_t";
3122  case IncompleteMatrixIdx:
3123  return "<incomplete matrix index type>";
3124  case OMPArraySection:
3125  return "<OpenMP array section type>";
3126  case OMPArrayShaping:
3127  return "<OpenMP array shaping type>";
3128  case OMPIterator:
3129  return "<OpenMP iterator type>";
3130 #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
3131  case Id: \
3132  return #ExtType;
3133 #include "clang/Basic/OpenCLExtensionTypes.def"
3134 #define SVE_TYPE(Name, Id, SingletonId) \
3135  case Id: \
3136  return Name;
3137 #include "clang/Basic/AArch64SVEACLETypes.def"
3138 #define PPC_VECTOR_TYPE(Name, Id, Size) \
3139  case Id: \
3140  return #Name;
3141 #include "clang/Basic/PPCTypes.def"
3142 #define RVV_TYPE(Name, Id, SingletonId) \
3143  case Id: \
3144  return Name;
3145 #include "clang/Basic/RISCVVTypes.def"
3146  }
3147 
3148  llvm_unreachable("Invalid builtin type.");
3149 }
3150 
3152  // We never wrap type sugar around a PackExpansionType.
3153  if (auto *PET = dyn_cast<PackExpansionType>(getTypePtr()))
3154  return PET->getPattern();
3155  return *this;
3156 }
3157 
3159  if (const auto *RefType = getTypePtr()->getAs<ReferenceType>())
3160  return RefType->getPointeeType();
3161 
3162  // C++0x [basic.lval]:
3163  // Class prvalues can have cv-qualified types; non-class prvalues always
3164  // have cv-unqualified types.
3165  //
3166  // See also C99 6.3.2.1p2.
3167  if (!Context.getLangOpts().CPlusPlus ||
3168  (!getTypePtr()->isDependentType() && !getTypePtr()->isRecordType()))
3169  return getUnqualifiedType();
3170 
3171  return *this;
3172 }
3173 
3175  switch (CC) {
3176  case CC_C: return "cdecl";
3177  case CC_X86StdCall: return "stdcall";
3178  case CC_X86FastCall: return "fastcall";
3179  case CC_X86ThisCall: return "thiscall";
3180  case CC_X86Pascal: return "pascal";
3181  case CC_X86VectorCall: return "vectorcall";
3182  case CC_Win64: return "ms_abi";
3183  case CC_X86_64SysV: return "sysv_abi";
3184  case CC_X86RegCall : return "regcall";
3185  case CC_AAPCS: return "aapcs";
3186  case CC_AAPCS_VFP: return "aapcs-vfp";
3187  case CC_AArch64VectorCall: return "aarch64_vector_pcs";
3188  case CC_AArch64SVEPCS: return "aarch64_sve_pcs";
3189  case CC_AMDGPUKernelCall: return "amdgpu_kernel";
3190  case CC_IntelOclBicc: return "intel_ocl_bicc";
3191  case CC_SpirFunction: return "spir_function";
3192  case CC_OpenCLKernel: return "opencl_kernel";
3193  case CC_Swift: return "swiftcall";
3194  case CC_SwiftAsync: return "swiftasynccall";
3195  case CC_PreserveMost: return "preserve_most";
3196  case CC_PreserveAll: return "preserve_all";
3197  }
3198 
3199  llvm_unreachable("Invalid calling convention.");
3200 }
3201 
3202 FunctionProtoType::FunctionProtoType(QualType result, ArrayRef<QualType> params,
3203  QualType canonical,
3204  const ExtProtoInfo &epi)
3205  : FunctionType(FunctionProto, result, canonical, result->getDependence(),
3206  epi.ExtInfo) {
3207  FunctionTypeBits.FastTypeQuals = epi.TypeQuals.getFastQualifiers();
3208  FunctionTypeBits.RefQualifier = epi.RefQualifier;
3209  FunctionTypeBits.NumParams = params.size();
3210  assert(getNumParams() == params.size() && "NumParams overflow!");
3211  FunctionTypeBits.ExceptionSpecType = epi.ExceptionSpec.Type;
3212  FunctionTypeBits.HasExtParameterInfos = !!epi.ExtParameterInfos;
3213  FunctionTypeBits.Variadic = epi.Variadic;
3214  FunctionTypeBits.HasTrailingReturn = epi.HasTrailingReturn;
3215 
3216  if (epi.requiresFunctionProtoTypeExtraBitfields()) {
3217  FunctionTypeBits.HasExtraBitfields = true;
3218  auto &ExtraBits = *getTrailingObjects<FunctionTypeExtraBitfields>();
3219  ExtraBits = FunctionTypeExtraBitfields();
3220  } else {
3221  FunctionTypeBits.HasExtraBitfields = false;
3222  }
3223 
3224 
3225  // Fill in the trailing argument array.
3226  auto *argSlot = getTrailingObjects<QualType>();
3227  for (unsigned i = 0; i != getNumParams(); ++i) {
3228  addDependence(params[i]->getDependence() &
3229  ~TypeDependence::VariablyModified);
3230  argSlot[i] = params[i];
3231  }
3232 
3233  // Fill in the exception type array if present.
3234  if (getExceptionSpecType() == EST_Dynamic) {
3235  auto &ExtraBits = *getTrailingObjects<FunctionTypeExtraBitfields>();
3236  ExtraBits.NumExceptionType = epi.ExceptionSpec.Exceptions.size();
3237 
3238  assert(hasExtraBitfields() && "missing trailing extra bitfields!");
3239  auto *exnSlot =
3240  reinterpret_cast<QualType *>(getTrailingObjects<ExceptionType>());
3241  unsigned I = 0;
3242  for (QualType ExceptionType : epi.ExceptionSpec.Exceptions) {
3243  // Note that, before C++17, a dependent exception specification does
3244  // *not* make a type dependent; it's not even part of the C++ type
3245  // system.
3246  addDependence(
3247  ExceptionType->getDependence() &
3248  (TypeDependence::Instantiation | TypeDependence::UnexpandedPack));
3249 
3250  exnSlot[I++] = ExceptionType;
3251  }
3252  }
3253  // Fill in the Expr * in the exception specification if present.
3254  else if (isComputedNoexcept(getExceptionSpecType())) {
3255  assert(epi.ExceptionSpec.NoexceptExpr && "computed noexcept with no expr");
3256  assert((getExceptionSpecType() == EST_DependentNoexcept) ==
3257  epi.ExceptionSpec.NoexceptExpr->isValueDependent());
3258 
3259  // Store the noexcept expression and context.
3260  *getTrailingObjects<Expr *>() = epi.ExceptionSpec.NoexceptExpr;
3261 
3262  addDependence(
3263  toTypeDependence(epi.ExceptionSpec.NoexceptExpr->getDependence()) &
3264  (TypeDependence::Instantiation | TypeDependence::UnexpandedPack));
3265  }
3266  // Fill in the FunctionDecl * in the exception specification if present.
3267  else if (getExceptionSpecType() == EST_Uninstantiated) {
3268  // Store the function decl from which we will resolve our
3269  // exception specification.
3270  auto **slot = getTrailingObjects<FunctionDecl *>();
3271  slot[0] = epi.ExceptionSpec.SourceDecl;
3272  slot[1] = epi.ExceptionSpec.SourceTemplate;
3273  // This exception specification doesn't make the type dependent, because
3274  // it's not instantiated as part of instantiating the type.
3275  } else if (getExceptionSpecType() == EST_Unevaluated) {
3276  // Store the function decl from which we will resolve our
3277  // exception specification.
3278  auto **slot = getTrailingObjects<FunctionDecl *>();
3279  slot[0] = epi.ExceptionSpec.SourceDecl;
3280  }
3281 
3282  // If this is a canonical type, and its exception specification is dependent,
3283  // then it's a dependent type. This only happens in C++17 onwards.
3284  if (isCanonicalUnqualified()) {
3285  if (getExceptionSpecType() == EST_Dynamic ||
3286  getExceptionSpecType() == EST_DependentNoexcept) {
3287  assert(hasDependentExceptionSpec() && "type should not be canonical");
3288  addDependence(TypeDependence::DependentInstantiation);
3289  }
3290  } else if (getCanonicalTypeInternal()->isDependentType()) {
3291  // Ask our canonical type whether our exception specification was dependent.
3292  addDependence(TypeDependence::DependentInstantiation);
3293  }
3294 
3295  // Fill in the extra parameter info if present.
3296  if (epi.ExtParameterInfos) {
3297  auto *extParamInfos = getTrailingObjects<ExtParameterInfo>();
3298  for (unsigned i = 0; i != getNumParams(); ++i)
3299  extParamInfos[i] = epi.ExtParameterInfos[i];
3300  }
3301 
3302  if (epi.TypeQuals.hasNonFastQualifiers()) {
3303  FunctionTypeBits.HasExtQuals = 1;
3304  *getTrailingObjects<Qualifiers>() = epi.TypeQuals;
3305  } else {
3306  FunctionTypeBits.HasExtQuals = 0;
3307  }
3308 
3309  // Fill in the Ellipsis location info if present.
3310  if (epi.Variadic) {
3311  auto &EllipsisLoc = *getTrailingObjects<SourceLocation>();
3312  EllipsisLoc = epi.EllipsisLoc;
3313  }
3314 }
3315 
3317  if (Expr *NE = getNoexceptExpr())
3318  return NE->isValueDependent();
3319  for (QualType ET : exceptions())
3320  // A pack expansion with a non-dependent pattern is still dependent,
3321  // because we don't know whether the pattern is in the exception spec
3322  // or not (that depends on whether the pack has 0 expansions).
3323  if (ET->isDependentType() || ET->getAs<PackExpansionType>())
3324  return true;
3325  return false;
3326 }
3327 
3329  if (Expr *NE = getNoexceptExpr())
3330  return NE->isInstantiationDependent();
3331  for (QualType ET : exceptions())
3332  if (ET->isInstantiationDependentType())
3333  return true;
3334  return false;
3335 }
3336 
3338  switch (getExceptionSpecType()) {
3339  case EST_Unparsed:
3340  case EST_Unevaluated:
3341  llvm_unreachable("should not call this with unresolved exception specs");
3342 
3343  case EST_DynamicNone:
3344  case EST_BasicNoexcept:
3345  case EST_NoexceptTrue:
3346  case EST_NoThrow:
3347  return CT_Cannot;
3348 
3349  case EST_None:
3350  case EST_MSAny:
3351  case EST_NoexceptFalse:
3352  return CT_Can;
3353 
3354  case EST_Dynamic:
3355  // A dynamic exception specification is throwing unless every exception
3356  // type is an (unexpanded) pack expansion type.
3357  for (unsigned I = 0; I != getNumExceptions(); ++I)
3359  return CT_Can;
3360  return CT_Dependent;
3361 
3362  case EST_Uninstantiated:
3363  case EST_DependentNoexcept:
3364  return CT_Dependent;
3365  }
3366 
3367  llvm_unreachable("unexpected exception specification kind");
3368 }
3369 
3371  for (unsigned ArgIdx = getNumParams(); ArgIdx; --ArgIdx)
3372  if (isa<PackExpansionType>(getParamType(ArgIdx - 1)))
3373  return true;
3374 
3375  return false;
3376 }
3377 
3378 void FunctionProtoType::Profile(llvm::FoldingSetNodeID &ID, QualType Result,
3379  const QualType *ArgTys, unsigned NumParams,
3380  const ExtProtoInfo &epi,
3381  const ASTContext &Context, bool Canonical) {
3382  // We have to be careful not to get ambiguous profile encodings.
3383  // Note that valid type pointers are never ambiguous with anything else.
3384  //
3385  // The encoding grammar begins:
3386  // type type* bool int bool
3387  // If that final bool is true, then there is a section for the EH spec:
3388  // bool type*
3389  // This is followed by an optional "consumed argument" section of the
3390  // same length as the first type sequence:
3391  // bool*
3392  // Finally, we have the ext info and trailing return type flag:
3393  // int bool
3394  //
3395  // There is no ambiguity between the consumed arguments and an empty EH
3396  // spec because of the leading 'bool' which unambiguously indicates
3397  // whether the following bool is the EH spec or part of the arguments.
3398 
3399  ID.AddPointer(Result.getAsOpaquePtr());
3400  for (unsigned i = 0; i != NumParams; ++i)
3401  ID.AddPointer(ArgTys[i].getAsOpaquePtr());
3402  // This method is relatively performance sensitive, so as a performance
3403  // shortcut, use one AddInteger call instead of four for the next four
3404  // fields.
3405  assert(!(unsigned(epi.Variadic) & ~1) &&
3406  !(unsigned(epi.RefQualifier) & ~3) &&
3407  !(unsigned(epi.ExceptionSpec.Type) & ~15) &&
3408  "Values larger than expected.");
3409  ID.AddInteger(unsigned(epi.Variadic) +
3410  (epi.RefQualifier << 1) +
3411  (epi.ExceptionSpec.Type << 3));
3412  ID.Add(epi.TypeQuals);
3413  if (epi.ExceptionSpec.Type == EST_Dynamic) {
3414  for (QualType Ex : epi.ExceptionSpec.Exceptions)
3415  ID.AddPointer(Ex.getAsOpaquePtr());
3416  } else if (isComputedNoexcept(epi.ExceptionSpec.Type)) {
3417  epi.ExceptionSpec.NoexceptExpr->Profile(ID, Context, Canonical);
3418  } else if (epi.ExceptionSpec.Type == EST_Uninstantiated ||
3419  epi.ExceptionSpec.Type == EST_Unevaluated) {
3420  ID.AddPointer(epi.ExceptionSpec.SourceDecl->getCanonicalDecl());
3421  }
3422  if (epi.ExtParameterInfos) {
3423  for (unsigned i = 0; i != NumParams; ++i)
3424  ID.AddInteger(epi.ExtParameterInfos[i].getOpaqueValue());
3425  }
3426  epi.ExtInfo.Profile(ID);
3427  ID.AddBoolean(epi.HasTrailingReturn);
3428 }
3429 
3430 void FunctionProtoType::Profile(llvm::FoldingSetNodeID &ID,
3431  const ASTContext &Ctx) {
3434 }
3435 
3436 TypedefType::TypedefType(TypeClass tc, const TypedefNameDecl *D,
3437  QualType underlying, QualType can)
3438  : Type(tc, can, toSemanticDependence(underlying->getDependence())),
3439  Decl(const_cast<TypedefNameDecl *>(D)) {
3440  assert(!isa<TypedefType>(can) && "Invalid canonical type");
3441 }
3442 
3444  return getDecl()->getUnderlyingType();
3445 }
3446 
3447 UsingType::UsingType(const UsingShadowDecl *Found, QualType Underlying,
3448  QualType Canon)
3449  : Type(Using, Canon, toSemanticDependence(Underlying->getDependence())),
3450  Found(const_cast<UsingShadowDecl *>(Found)) {
3451  assert(Underlying == getUnderlyingType());
3452 }
3453 
3455  return QualType(cast<TypeDecl>(Found->getTargetDecl())->getTypeForDecl(), 0);
3456 }
3457 
3459 
3461  // Step over MacroQualifiedTypes from the same macro to find the type
3462  // ultimately qualified by the macro qualifier.
3463  QualType Inner = cast<AttributedType>(getUnderlyingType())->getModifiedType();
3464  while (auto *InnerMQT = dyn_cast<MacroQualifiedType>(Inner)) {
3465  if (InnerMQT->getMacroIdentifier() != getMacroIdentifier())
3466  break;
3467  Inner = InnerMQT->getModifiedType();
3468  }
3469  return Inner;
3470 }
3471 
3473  : Type(TypeOfExpr, can,
3474  toTypeDependence(E->getDependence()) |
3475  (E->getType()->getDependence() &
3476  TypeDependence::VariablyModified)),
3477  TOExpr(E) {}
3478 
3480  return !TOExpr->isTypeDependent();
3481 }
3482 
3484  if (isSugared())
3485  return getUnderlyingExpr()->getType();
3486 
3487  return QualType(this, 0);
3488 }
3489 
3490 void DependentTypeOfExprType::Profile(llvm::FoldingSetNodeID &ID,
3491  const ASTContext &Context, Expr *E) {
3492  E->Profile(ID, Context, true);
3493 }
3494 
3496  // C++11 [temp.type]p2: "If an expression e involves a template parameter,
3497  // decltype(e) denotes a unique dependent type." Hence a decltype type is
3498  // type-dependent even if its expression is only instantiation-dependent.
3499  : Type(Decltype, can,
3500  toTypeDependence(E->getDependence()) |
3501  (E->isInstantiationDependent() ? TypeDependence::Dependent
3502  : TypeDependence::None) |
3503  (E->getType()->getDependence() &
3504  TypeDependence::VariablyModified)),
3505  E(E), UnderlyingType(underlyingType) {}
3506 
3508 
3510  if (isSugared())
3511  return getUnderlyingType();
3512 
3513  return QualType(this, 0);
3514 }
3515 
3517  : DecltypeType(E, Context.DependentTy), Context(Context) {}
3518 
3519 void DependentDecltypeType::Profile(llvm::FoldingSetNodeID &ID,
3520  const ASTContext &Context, Expr *E) {
3521  E->Profile(ID, Context, true);
3522 }
3523 
3525  QualType UnderlyingType, UTTKind UKind,
3526  QualType CanonicalType)
3527  : Type(UnaryTransform, CanonicalType, BaseType->getDependence()),
3528  BaseType(BaseType), UnderlyingType(UnderlyingType), UKind(UKind) {}
3529 
3531  QualType BaseType,
3532  UTTKind UKind)
3533  : UnaryTransformType(BaseType, C.DependentTy, UKind, QualType()) {}
3534 
3536  : Type(TC, can,
3537  D->isDependentType() ? TypeDependence::DependentInstantiation
3538  : TypeDependence::None),
3539  decl(const_cast<TagDecl *>(D)) {}
3540 
3542  for (auto I : decl->redecls()) {
3543  if (I->isCompleteDefinition() || I->isBeingDefined())
3544  return I;
3545  }
3546  // If there's no definition (not even in progress), return what we have.
3547  return decl;
3548 }
3549 
3551  return getInterestingTagDecl(decl);
3552 }
3553 
3555  return getDecl()->isBeingDefined();
3556 }
3557 
3559  std::vector<const RecordType*> RecordTypeList;
3560  RecordTypeList.push_back(this);
3561  unsigned NextToCheckIndex = 0;
3562 
3563  while (RecordTypeList.size() > NextToCheckIndex) {
3564  for (FieldDecl *FD :
3565  RecordTypeList[NextToCheckIndex]->getDecl()->fields()) {
3566  QualType FieldTy = FD->getType();
3567  if (FieldTy.isConstQualified())
3568  return true;
3569  FieldTy = FieldTy.getCanonicalType();
3570  if (const auto *FieldRecTy = FieldTy->getAs<RecordType>()) {
3571  if (!llvm::is_contained(RecordTypeList, FieldRecTy))
3572  RecordTypeList.push_back(FieldRecTy);
3573  }
3574  }
3575  ++NextToCheckIndex;
3576  }
3577  return false;
3578 }
3579 
3581  // FIXME: Generate this with TableGen.
3582  switch (getAttrKind()) {
3583  // These are type qualifiers in the traditional C sense: they annotate
3584  // something about a specific value/variable of a type. (They aren't
3585  // always part of the canonical type, though.)
3586  case attr::ObjCGC:
3587  case attr::ObjCOwnership:
3588  case attr::ObjCInertUnsafeUnretained:
3589  case attr::TypeNonNull:
3590  case attr::TypeNullable:
3591  case attr::TypeNullableResult:
3592  case attr::TypeNullUnspecified:
3593  case attr::LifetimeBound:
3594  case attr::AddressSpace:
3595  return true;
3596 
3597  // All other type attributes aren't qualifiers; they rewrite the modified
3598  // type to be a semantically different type.
3599  default:
3600  return false;
3601  }
3602 }
3603 
3605  // FIXME: Generate this with TableGen?
3606  switch (getAttrKind()) {
3607  default: return false;
3608  case attr::Ptr32:
3609  case attr::Ptr64:
3610  case attr::SPtr:
3611  case attr::UPtr:
3612  return true;
3613  }
3614  llvm_unreachable("invalid attr kind");
3615 }
3616 
3618  // FIXME: Generate this with TableGen.
3619  switch (getAttrKind()) {
3620  default: return false;
3621  case attr::Pcs:
3622  case attr::CDecl:
3623  case attr::FastCall:
3624  case attr::StdCall:
3625  case attr::ThisCall:
3626  case attr::RegCall:
3627  case attr::SwiftCall:
3628  case attr::SwiftAsyncCall:
3629  case attr::VectorCall:
3630  case attr::AArch64VectorPcs:
3631  case attr::AArch64SVEPcs:
3632  case attr::AMDGPUKernelCall:
3633  case attr::Pascal:
3634  case attr::MSABI:
3635  case attr::SysVABI:
3636  case attr::IntelOclBicc:
3637  case attr::PreserveMost:
3638  case attr::PreserveAll:
3639  return true;
3640  }
3641  llvm_unreachable("invalid attr kind");
3642 }
3643 
3645  return cast<CXXRecordDecl>(getInterestingTagDecl(Decl));
3646 }
3647 
3649  return isCanonicalUnqualified() ? nullptr : getDecl()->getIdentifier();
3650 }
3651 
3652 SubstTemplateTypeParmPackType::SubstTemplateTypeParmPackType(
3653  const TemplateTypeParmType *Param, QualType Canon,
3654  const TemplateArgument &ArgPack)
3655  : Type(SubstTemplateTypeParmPack, Canon,
3656  TypeDependence::DependentInstantiation |
3657  TypeDependence::UnexpandedPack),
3658  Replaced(Param), Arguments(ArgPack.pack_begin()) {
3659  SubstTemplateTypeParmPackTypeBits.NumArgs = ArgPack.pack_size();
3660 }
3661 
3663  return TemplateArgument(llvm::makeArrayRef(Arguments, getNumArgs()));
3664 }
3665 
3666 void SubstTemplateTypeParmPackType::Profile(llvm::FoldingSetNodeID &ID) {
3668 }
3669 
3670 void SubstTemplateTypeParmPackType::Profile(llvm::FoldingSetNodeID &ID,
3671  const TemplateTypeParmType *Replaced,
3672  const TemplateArgument &ArgPack) {
3673  ID.AddPointer(Replaced);
3674  ID.AddInteger(ArgPack.pack_size());
3675  for (const auto &P : ArgPack.pack_elements())
3676  ID.AddPointer(P.getAsType().getAsOpaquePtr());
3677 }
3678 
3680  const TemplateArgumentListInfo &Args, ArrayRef<TemplateArgument> Converted) {
3681  return anyDependentTemplateArguments(Args.arguments(), Converted);
3682 }
3683 
3686  for (const TemplateArgument &Arg : Converted)
3687  if (Arg.isDependent())
3688  return true;
3689  return false;
3690 }
3691 
3694  for (const TemplateArgumentLoc &ArgLoc : Args) {
3695  if (ArgLoc.getArgument().isInstantiationDependent())
3696  return true;
3697  }
3698  return false;
3699 }
3700 
3701 TemplateSpecializationType::TemplateSpecializationType(
3703  QualType AliasedType)
3704  : Type(TemplateSpecialization, Canon.isNull() ? QualType(this, 0) : Canon,
3705  (Canon.isNull()
3706  ? TypeDependence::DependentInstantiation
3707  : toSemanticDependence(Canon->getDependence())) |
3708  (toTypeDependence(T.getDependence()) &
3709  TypeDependence::UnexpandedPack)),
3710  Template(T) {
3711  TemplateSpecializationTypeBits.NumArgs = Args.size();
3712  TemplateSpecializationTypeBits.TypeAlias = !AliasedType.isNull();
3713 
3714  assert(!T.getAsDependentTemplateName() &&
3715  "Use DependentTemplateSpecializationType for dependent template-name");
3716  assert((T.getKind() == TemplateName::Template ||
3720  "Unexpected template name for TemplateSpecializationType");
3721 
3722  auto *TemplateArgs = reinterpret_cast<TemplateArgument *>(this + 1);
3723  for (const TemplateArgument &Arg : Args) {
3724  // Update instantiation-dependent, variably-modified, and error bits.
3725  // If the canonical type exists and is non-dependent, the template
3726  // specialization type can be non-dependent even if one of the type
3727  // arguments is. Given:
3728  // template<typename T> using U = int;
3729  // U<T> is always non-dependent, irrespective of the type T.
3730  // However, U<Ts> contains an unexpanded parameter pack, even though
3731  // its expansion (and thus its desugared type) doesn't.
3732  addDependence(toTypeDependence(Arg.getDependence()) &
3733  ~TypeDependence::Dependent);
3734  if (Arg.getKind() == TemplateArgument::Type)
3735  addDependence(Arg.getAsType()->getDependence() &
3736  TypeDependence::VariablyModified);
3737  new (TemplateArgs++) TemplateArgument(Arg);
3738  }
3739 
3740  // Store the aliased type if this is a type alias template specialization.
3741  if (isTypeAlias()) {
3742  auto *Begin = reinterpret_cast<TemplateArgument *>(this + 1);
3743  *reinterpret_cast<QualType*>(Begin + getNumArgs()) = AliasedType;
3744  }
3745 }
3746 
3747 void
3748 TemplateSpecializationType::Profile(llvm::FoldingSetNodeID &ID,
3749  TemplateName T,
3751  const ASTContext &Context) {
3752  T.Profile(ID);
3753  for (const TemplateArgument &Arg : Args)
3754  Arg.Profile(ID, Context);
3755 }
3756 
3757 QualType
3758 QualifierCollector::apply(const ASTContext &Context, QualType QT) const {
3759  if (!hasNonFastQualifiers())
3761 
3762  return Context.getQualifiedType(QT, *this);
3763 }
3764 
3765 QualType
3766 QualifierCollector::apply(const ASTContext &Context, const Type *T) const {
3767  if (!hasNonFastQualifiers())
3768  return QualType(T, getFastQualifiers());
3769 
3770  return Context.getQualifiedType(T, *this);
3771 }
3772 
3773 void ObjCObjectTypeImpl::Profile(llvm::FoldingSetNodeID &ID,
3774  QualType BaseType,
3775  ArrayRef<QualType> typeArgs,
3776  ArrayRef<ObjCProtocolDecl *> protocols,
3777  bool isKindOf) {
3778  ID.AddPointer(BaseType.getAsOpaquePtr());
3779  ID.AddInteger(typeArgs.size());
3780  for (auto typeArg : typeArgs)
3781  ID.AddPointer(typeArg.getAsOpaquePtr());
3782  ID.AddInteger(protocols.size());
3783  for (auto proto : protocols)
3784  ID.AddPointer(proto);
3785  ID.AddBoolean(isKindOf);
3786 }
3787 
3788 void ObjCObjectTypeImpl::Profile(llvm::FoldingSetNodeID &ID) {
3790  llvm::makeArrayRef(qual_begin(), getNumProtocols()),
3792 }
3793 
3794 void ObjCTypeParamType::Profile(llvm::FoldingSetNodeID &ID,
3795  const ObjCTypeParamDecl *OTPDecl,
3796  QualType CanonicalType,
3797  ArrayRef<ObjCProtocolDecl *> protocols) {
3798  ID.AddPointer(OTPDecl);
3799  ID.AddPointer(CanonicalType.getAsOpaquePtr());
3800  ID.AddInteger(protocols.size());
3801  for (auto proto : protocols)
3802  ID.AddPointer(proto);
3803 }
3804 
3805 void ObjCTypeParamType::Profile(llvm::FoldingSetNodeID &ID) {
3807  llvm::makeArrayRef(qual_begin(), getNumProtocols()));
3808 }
3809 
3810 namespace {
3811 
3812 /// The cached properties of a type.
3813 class CachedProperties {
3814  Linkage L;
3815  bool local;
3816 
3817 public:
3818  CachedProperties(Linkage L, bool local) : L(L), local(local) {}
3819 
3820  Linkage getLinkage() const { return L; }
3821  bool hasLocalOrUnnamedType() const { return local; }
3822 
3823  friend CachedProperties merge(CachedProperties L, CachedProperties R) {
3824  Linkage MergedLinkage = minLinkage(L.L, R.L);
3825  return CachedProperties(MergedLinkage, L.hasLocalOrUnnamedType() ||
3826  R.hasLocalOrUnnamedType());
3827  }
3828 };
3829 
3830 } // namespace
3831 
3832 static CachedProperties computeCachedProperties(const Type *T);
3833 
3834 namespace clang {
3835 
3836 /// The type-property cache. This is templated so as to be
3837 /// instantiated at an internal type to prevent unnecessary symbol
3838 /// leakage.
3839 template <class Private> class TypePropertyCache {
3840 public:
3841  static CachedProperties get(QualType T) {
3842  return get(T.getTypePtr());
3843  }
3844 
3845  static CachedProperties get(const Type *T) {
3846  ensure(T);
3847  return CachedProperties(T->TypeBits.getLinkage(),
3848  T->TypeBits.hasLocalOrUnnamedType());
3849  }
3850 
3851  static void ensure(const Type *T) {
3852  // If the cache is valid, we're okay.
3853  if (T->TypeBits.isCacheValid()) return;
3854 
3855  // If this type is non-canonical, ask its canonical type for the
3856  // relevant information.
3857  if (!T->isCanonicalUnqualified()) {
3858  const Type *CT = T->getCanonicalTypeInternal().getTypePtr();
3859  ensure(CT);
3860  T->TypeBits.CacheValid = true;
3861  T->TypeBits.CachedLinkage = CT->TypeBits.CachedLinkage;
3862  T->TypeBits.CachedLocalOrUnnamed = CT->TypeBits.CachedLocalOrUnnamed;
3863  return;
3864  }
3865 
3866  // Compute the cached properties and then set the cache.
3867  CachedProperties Result = computeCachedProperties(T);
3868  T->TypeBits.CacheValid = true;
3869  T->TypeBits.CachedLinkage = Result.getLinkage();
3870  T->TypeBits.CachedLocalOrUnnamed = Result.hasLocalOrUnnamedType();
3871  }
3872 };
3873 
3874 } // namespace clang
3875 
3876 // Instantiate the friend template at a private class. In a
3877 // reasonable implementation, these symbols will be internal.
3878 // It is terrible that this is the best way to accomplish this.
3879 namespace {
3880 
3881 class Private {};
3882 
3883 } // namespace
3884 
3886 
3887 static CachedProperties computeCachedProperties(const Type *T) {
3888  switch (T->getTypeClass()) {
3889 #define TYPE(Class,Base)
3890 #define NON_CANONICAL_TYPE(Class,Base) case Type::Class:
3891 #include "clang/AST/TypeNodes.inc"
3892  llvm_unreachable("didn't expect a non-canonical type here");
3893 
3894 #define TYPE(Class,Base)
3895 #define DEPENDENT_TYPE(Class,Base) case Type::Class:
3896 #define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Class,Base) case Type::Class:
3897 #include "clang/AST/TypeNodes.inc"
3898  // Treat instantiation-dependent types as external.
3899  if (!T->isInstantiationDependentType()) T->dump();
3900  assert(T->isInstantiationDependentType());
3901  return CachedProperties(ExternalLinkage, false);
3902 
3903  case Type::Auto:
3904  case Type::DeducedTemplateSpecialization:
3905  // Give non-deduced 'auto' types external linkage. We should only see them
3906  // here in error recovery.
3907  return CachedProperties(ExternalLinkage, false);
3908 
3909  case Type::BitInt:
3910  case Type::Builtin:
3911  // C++ [basic.link]p8:
3912  // A type is said to have linkage if and only if:
3913  // - it is a fundamental type (3.9.1); or
3914  return CachedProperties(ExternalLinkage, false);
3915 
3916  case Type::Record:
3917  case Type::Enum: {
3918  const TagDecl *Tag = cast<TagType>(T)->getDecl();
3919 
3920  // C++ [basic.link]p8:
3921  // - it is a class or enumeration type that is named (or has a name
3922  // for linkage purposes (7.1.3)) and the name has linkage; or
3923  // - it is a specialization of a class template (14); or
3924  Linkage L = Tag->getLinkageInternal();
3925  bool IsLocalOrUnnamed =
3926  Tag->getDeclContext()->isFunctionOrMethod() ||
3927  !Tag->hasNameForLinkage();
3928  return CachedProperties(L, IsLocalOrUnnamed);
3929  }
3930 
3931  // C++ [basic.link]p8:
3932  // - it is a compound type (3.9.2) other than a class or enumeration,
3933  // compounded exclusively from types that have linkage; or
3934  case Type::Complex:
3935  return Cache::get(cast<ComplexType>(T)->getElementType());
3936  case Type::Pointer:
3937  return Cache::get(cast<PointerType>(T)->getPointeeType());
3938  case Type::BlockPointer:
3939  return Cache::get(cast<BlockPointerType>(T)->getPointeeType());
3940  case Type::LValueReference:
3941  case Type::RValueReference:
3942  return Cache::get(cast<ReferenceType>(T)->getPointeeType());
3943  case Type::MemberPointer: {
3944  const auto *MPT = cast<MemberPointerType>(T);
3945  return merge(Cache::get(MPT->getClass()),
3946  Cache::get(MPT->getPointeeType()));
3947  }
3948  case Type::ConstantArray:
3949  case Type::IncompleteArray:
3950  case Type::VariableArray:
3951  return Cache::get(cast<ArrayType>(T)->getElementType());
3952  case Type::Vector:
3953  case Type::ExtVector:
3954  return Cache::get(cast<VectorType>(T)->getElementType());
3955  case Type::ConstantMatrix:
3956  return Cache::get(cast<ConstantMatrixType>(T)->getElementType());
3957  case Type::FunctionNoProto:
3958  return Cache::get(cast<FunctionType>(T)->getReturnType());
3959  case Type::FunctionProto: {
3960  const auto *FPT = cast<FunctionProtoType>(T);
3961  CachedProperties result = Cache::get(FPT->getReturnType());
3962  for (const auto &ai : FPT->param_types())
3963  result = merge(result, Cache::get(ai));
3964  return result;
3965  }
3966  case Type::ObjCInterface: {
3967  Linkage L = cast<ObjCInterfaceType>(T)->getDecl()->getLinkageInternal();
3968  return CachedProperties(L, false);
3969  }
3970  case Type::ObjCObject:
3971  return Cache::get(cast<ObjCObjectType>(T)->getBaseType());
3972  case Type::ObjCObjectPointer:
3973  return Cache::get(cast<ObjCObjectPointerType>(T)->getPointeeType());
3974  case Type::Atomic:
3975  return Cache::get(cast<AtomicType>(T)->getValueType());
3976  case Type::Pipe:
3977  return Cache::get(cast<PipeType>(T)->getElementType());
3978  }
3979 
3980  llvm_unreachable("unhandled type class");
3981 }
3982 
3983 /// Determine the linkage of this type.
3985  Cache::ensure(this);
3986  return TypeBits.getLinkage();
3987 }
3988 
3990  Cache::ensure(this);
3991  return TypeBits.hasLocalOrUnnamedType();
3992 }
3993 
3995  switch (T->getTypeClass()) {
3996 #define TYPE(Class,Base)
3997 #define NON_CANONICAL_TYPE(Class,Base) case Type::Class:
3998 #include "clang/AST/TypeNodes.inc"
3999  llvm_unreachable("didn't expect a non-canonical type here");
4000 
4001 #define TYPE(Class,Base)
4002 #define DEPENDENT_TYPE(Class,Base) case Type::Class:
4003 #define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Class,Base) case Type::Class:
4004 #include "clang/AST/TypeNodes.inc"
4005  // Treat instantiation-dependent types as external.
4006  assert(T->isInstantiationDependentType());
4007  return LinkageInfo::external();
4008 
4009  case Type::BitInt:
4010  case Type::Builtin:
4011  return LinkageInfo::external();
4012 
4013  case Type::Auto:
4014  case Type::DeducedTemplateSpecialization:
4015  return LinkageInfo::external();
4016 
4017  case Type::Record:
4018  case Type::Enum:
4019  return getDeclLinkageAndVisibility(cast<TagType>(T)->getDecl());
4020 
4021  case Type::Complex:
4022  return computeTypeLinkageInfo(cast<ComplexType>(T)->getElementType());
4023  case Type::Pointer:
4024  return computeTypeLinkageInfo(cast<PointerType>(T)->getPointeeType());
4025  case Type::BlockPointer:
4026  return computeTypeLinkageInfo(cast<BlockPointerType>(T)->getPointeeType());
4027  case Type::LValueReference:
4028  case Type::RValueReference:
4029  return computeTypeLinkageInfo(cast<ReferenceType>(T)->getPointeeType());
4030  case Type::MemberPointer: {
4031  const auto *MPT = cast<MemberPointerType>(T);
4032  LinkageInfo LV = computeTypeLinkageInfo(MPT->getClass());
4033  LV.merge(computeTypeLinkageInfo(MPT->getPointeeType()));
4034  return LV;
4035  }
4036  case Type::ConstantArray:
4037  case Type::IncompleteArray:
4038  case Type::VariableArray:
4039  return computeTypeLinkageInfo(cast<ArrayType>(T)->getElementType());
4040  case Type::Vector:
4041  case Type::ExtVector:
4042  return computeTypeLinkageInfo(cast<VectorType>(T)->getElementType());
4043  case Type::ConstantMatrix:
4044  return computeTypeLinkageInfo(
4045  cast<ConstantMatrixType>(T)->getElementType());
4046  case Type::FunctionNoProto:
4047  return computeTypeLinkageInfo(cast<FunctionType>(T)->getReturnType());
4048  case Type::FunctionProto: {
4049  const auto *FPT = cast<FunctionProtoType>(T);
4050  LinkageInfo LV = computeTypeLinkageInfo(FPT->getReturnType());
4051  for (const auto &ai : FPT->param_types())
4052  LV.merge(computeTypeLinkageInfo(ai));
4053  return LV;
4054  }
4055  case Type::ObjCInterface:
4056  return getDeclLinkageAndVisibility(cast<ObjCInterfaceType>(T)->getDecl());
4057  case Type::ObjCObject:
4058  return computeTypeLinkageInfo(cast<ObjCObjectType>(T)->getBaseType());
4059  case Type::ObjCObjectPointer:
4060  return computeTypeLinkageInfo(
4061  cast<ObjCObjectPointerType>(T)->getPointeeType());
4062  case Type::Atomic:
4063  return computeTypeLinkageInfo(cast<AtomicType>(T)->getValueType());
4064  case Type::Pipe:
4065  return computeTypeLinkageInfo(cast<PipeType>(T)->getElementType());
4066  }
4067 
4068  llvm_unreachable("unhandled type class");
4069 }
4070 
4071 bool Type::isLinkageValid() const {
4072  if (!TypeBits.isCacheValid())
4073  return true;
4074 
4075  Linkage L = LinkageComputer{}
4077  .getLinkage();
4078  return L == TypeBits.getLinkage();
4079 }
4080 
4082  if (!T->isCanonicalUnqualified())
4084 
4086  assert(LV.getLinkage() == T->getLinkage());
4087  return LV;
4088 }
4089 
4092 }
4093 
4095 Type::getNullability(const ASTContext &Context) const {
4096  QualType Type(this, 0);
4097  while (const auto *AT = Type->getAs<AttributedType>()) {
4098  // Check whether this is an attributed type with nullability
4099  // information.
4100  if (auto Nullability = AT->getImmediateNullability())
4101  return Nullability;
4102 
4103  Type = AT->getEquivalentType();
4104  }
4105  return None;
4106 }
4107 
4108 bool Type::canHaveNullability(bool ResultIfUnknown) const {
4110 
4111  switch (type->getTypeClass()) {
4112  // We'll only see canonical types here.
4113 #define NON_CANONICAL_TYPE(Class, Parent) \
4114  case Type::Class: \
4115  llvm_unreachable("non-canonical type");
4116 #define TYPE(Class, Parent)
4117 #include "clang/AST/TypeNodes.inc"
4118 
4119  // Pointer types.
4120  case Type::Pointer:
4121  case Type::BlockPointer:
4122  case Type::MemberPointer:
4123  case Type::ObjCObjectPointer:
4124  return true;
4125 
4126  // Dependent types that could instantiate to pointer types.
4127  case Type::UnresolvedUsing:
4128  case Type::TypeOfExpr:
4129  case Type::TypeOf:
4130  case Type::Decltype:
4131  case Type::UnaryTransform:
4132  case Type::TemplateTypeParm:
4133  case Type::SubstTemplateTypeParmPack:
4134  case Type::DependentName:
4135  case Type::DependentTemplateSpecialization:
4136  case Type::Auto:
4137  return ResultIfUnknown;
4138 
4139  // Dependent template specializations can instantiate to pointer
4140  // types unless they're known to be specializations of a class
4141  // template.
4142  case Type::TemplateSpecialization:
4143  if (TemplateDecl *templateDecl
4144  = cast<TemplateSpecializationType>(type.getTypePtr())
4145  ->getTemplateName().getAsTemplateDecl()) {
4146  if (isa<ClassTemplateDecl>(templateDecl))
4147  return false;
4148  }
4149  return ResultIfUnknown;
4150 
4151  case Type::Builtin:
4152  switch (cast<BuiltinType>(type.getTypePtr())->getKind()) {
4153  // Signed, unsigned, and floating-point types cannot have nullability.
4154 #define SIGNED_TYPE(Id, SingletonId) case BuiltinType::Id:
4155 #define UNSIGNED_TYPE(Id, SingletonId) case BuiltinType::Id:
4156 #define FLOATING_TYPE(Id, SingletonId) case BuiltinType::Id:
4157 #define BUILTIN_TYPE(Id, SingletonId)
4158 #include "clang/AST/BuiltinTypes.def"
4159  return false;
4160 
4161  // Dependent types that could instantiate to a pointer type.
4162  case BuiltinType::Dependent:
4163  case BuiltinType::Overload:
4164  case BuiltinType::BoundMember:
4165  case BuiltinType::PseudoObject:
4166  case BuiltinType::UnknownAny:
4167  case BuiltinType::ARCUnbridgedCast:
4168  return ResultIfUnknown;
4169 
4170  case BuiltinType::Void:
4171  case BuiltinType::ObjCId:
4172  case BuiltinType::ObjCClass:
4173  case BuiltinType::ObjCSel:
4174 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
4175  case BuiltinType::Id:
4176 #include "clang/Basic/OpenCLImageTypes.def"
4177 #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
4178  case BuiltinType::Id:
4179 #include "clang/Basic/OpenCLExtensionTypes.def"
4180  case BuiltinType::OCLSampler:
4181  case BuiltinType::OCLEvent:
4182  case BuiltinType::OCLClkEvent:
4183  case BuiltinType::OCLQueue:
4184  case BuiltinType::OCLReserveID:
4185 #define SVE_TYPE(Name, Id, SingletonId) \
4186  case BuiltinType::Id:
4187 #include "clang/Basic/AArch64SVEACLETypes.def"
4188 #define PPC_VECTOR_TYPE(Name, Id, Size) \
4189  case BuiltinType::Id:
4190 #include "clang/Basic/PPCTypes.def"
4191 #define RVV_TYPE(Name, Id, SingletonId) case BuiltinType::Id:
4192 #include "clang/Basic/RISCVVTypes.def"
4193  case BuiltinType::BuiltinFn:
4194  case BuiltinType::NullPtr:
4195  case BuiltinType::IncompleteMatrixIdx:
4196  case BuiltinType::OMPArraySection:
4197  case BuiltinType::OMPArrayShaping:
4198  case BuiltinType::OMPIterator:
4199  return false;
4200  }
4201  llvm_unreachable("unknown builtin type");
4202 
4203  // Non-pointer types.
4204  case Type::Complex:
4205  case Type::LValueReference:
4206  case Type::RValueReference:
4207  case Type::ConstantArray:
4208  case Type::IncompleteArray:
4209  case Type::VariableArray:
4210  case Type::DependentSizedArray:
4211  case Type::DependentVector:
4212  case Type::DependentSizedExtVector:
4213  case Type::Vector:
4214  case Type::ExtVector:
4215  case Type::ConstantMatrix:
4216  case Type::DependentSizedMatrix:
4217  case Type::DependentAddressSpace:
4218  case Type::FunctionProto:
4219  case Type::FunctionNoProto:
4220  case Type::Record:
4221  case Type::DeducedTemplateSpecialization:
4222  case Type::Enum:
4223  case Type::InjectedClassName:
4224  case Type::PackExpansion:
4225  case Type::ObjCObject:
4226  case Type::ObjCInterface:
4227  case Type::Atomic:
4228  case Type::Pipe:
4229  case Type::BitInt:
4230  case Type::DependentBitInt:
4231  return false;
4232  }
4233  llvm_unreachable("bad type kind!");
4234 }
4235 
4238  if (getAttrKind() == attr::TypeNonNull)
4239  return NullabilityKind::NonNull;
4240  if (getAttrKind() == attr::TypeNullable)
4242  if (getAttrKind() == attr::TypeNullUnspecified)
4244  if (getAttrKind() == attr::TypeNullableResult)
4246  return None;
4247 }
4248 
4250  QualType AttrTy = T;
4251  if (auto MacroTy = dyn_cast<MacroQualifiedType>(T))
4252  AttrTy = MacroTy->getUnderlyingType();
4253 
4254  if (auto attributed = dyn_cast<AttributedType>(AttrTy)) {
4255  if (auto nullability = attributed->getImmediateNullability()) {
4256  T = attributed->getModifiedType();
4257  return nullability;
4258  }
4259  }
4260 
4261  return None;
4262 }
4263 
4265  const auto *objcPtr = getAs<ObjCObjectPointerType>();
4266  if (!objcPtr)
4267  return false;
4268 
4269  if (objcPtr->isObjCIdType()) {
4270  // id is always okay.
4271  return true;
4272  }
4273 
4274  // Blocks are NSObjects.
4275  if (ObjCInterfaceDecl *iface = objcPtr->getInterfaceDecl()) {
4276  if (iface->getIdentifier() != ctx.getNSObjectName())
4277  return false;
4278 
4279  // Continue to check qualifiers, below.
4280  } else if (objcPtr->isObjCQualifiedIdType()) {
4281  // Continue to check qualifiers, below.
4282  } else {
4283  return false;
4284  }
4285 
4286  // Check protocol qualifiers.
4287  for (ObjCProtocolDecl *proto : objcPtr->quals()) {
4288  // Blocks conform to NSObject and NSCopying.
4289  if (proto->getIdentifier() != ctx.getNSObjectName() &&
4290  proto->getIdentifier() != ctx.getNSCopyingName())
4291  return false;
4292  }
4293 
4294  return true;
4295 }
4296 
4300  return Qualifiers::OCL_Strong;
4301 }
4302 
4304  assert(isObjCLifetimeType() &&
4305  "cannot query implicit lifetime for non-inferrable type");
4306 
4307  const Type *canon = getCanonicalTypeInternal().getTypePtr();
4308 
4309  // Walk down to the base type. We don't care about qualifiers for this.
4310  while (const auto *array = dyn_cast<ArrayType>(canon))
4311  canon = array->getElementType().getTypePtr();
4312 
4313  if (const auto *opt = dyn_cast<ObjCObjectPointerType>(canon)) {
4314  // Class and Class<Protocol> don't require retention.
4315  if (opt->getObjectType()->isObjCClass())
4316  return true;
4317  }
4318 
4319  return false;
4320 }
4321 
4323  const Type *cur = this;
4324  while (true) {
4325  if (const auto *typedefType = dyn_cast<TypedefType>(cur))
4326  return typedefType->getDecl()->hasAttr<ObjCNSObjectAttr>();
4327 
4328  // Single-step desugar until we run out of sugar.
4330  if (next.getTypePtr() == cur) return false;
4331  cur = next.getTypePtr();
4332  }
4333 }
4334 
4336  if (const auto *typedefType = dyn_cast<TypedefType>(this))
4337  return typedefType->getDecl()->hasAttr<ObjCIndependentClassAttr>();
4338  return false;
4339 }
4340 
4342  return isObjCObjectPointerType() ||
4343  isBlockPointerType() ||
4345 }
4346 
4348  if (isObjCLifetimeType())
4349  return true;
4350  if (const auto *OPT = getAs<PointerType>())
4351  return OPT->getPointeeType()->isObjCIndirectLifetimeType();
4352  if (const auto *Ref = getAs<ReferenceType>())
4353  return Ref->getPointeeType()->isObjCIndirectLifetimeType();
4354  if (const auto *MemPtr = getAs<MemberPointerType>())
4355  return MemPtr->getPointeeType()->isObjCIndirectLifetimeType();
4356  return false;
4357 }
4358 
4359 /// Returns true if objects of this type have lifetime semantics under
4360 /// ARC.
4362  const Type *type = this;
4363  while (const ArrayType *array = type->getAsArrayTypeUnsafe())
4364  type = array->getElementType().getTypePtr();
4365  return type->isObjCRetainableType();
4366 }
4367 
4368 /// Determine whether the given type T is a "bridgable" Objective-C type,
4369 /// which is either an Objective-C object pointer type or an
4372 }
4373 
4374 /// Determine whether the given type T is a "bridgeable" C type.
4376  const auto *Pointer = getAs<PointerType>();
4377  if (!Pointer)
4378  return false;
4379 
4380  QualType Pointee = Pointer->getPointeeType();
4381  return Pointee->isVoidType() || Pointee->isRecordType();
4382 }
4383 
4384 /// Check if the specified type is the CUDA device builtin surface type.
4386  if (const auto *RT = getAs<RecordType>())
4387  return RT->getDecl()->hasAttr<CUDADeviceBuiltinSurfaceTypeAttr>();
4388  return false;
4389 }
4390 
4391 /// Check if the specified type is the CUDA device builtin texture type.
4393  if (const auto *RT = getAs<RecordType>())
4394  return RT->getDecl()->hasAttr<CUDADeviceBuiltinTextureTypeAttr>();
4395  return false;
4396 }
4397 
4399  if (!isVariablyModifiedType()) return false;
4400 
4401  if (const auto *ptr = getAs<PointerType>())
4402  return ptr->getPointeeType()->hasSizedVLAType();
4403  if (const auto *ref = getAs<ReferenceType>())
4404  return ref->getPointeeType()->hasSizedVLAType();
4405  if (const ArrayType *arr = getAsArrayTypeUnsafe()) {
4406  if (isa<VariableArrayType>(arr) &&
4407  cast<VariableArrayType>(arr)->getSizeExpr())
4408  return true;
4409 
4410  return arr->getElementType()->hasSizedVLAType();
4411  }
4412 
4413  return false;
4414 }
4415 
4416 QualType::DestructionKind QualType::isDestructedTypeImpl(QualType type) {
4417  switch (type.getObjCLifetime()) {
4418  case Qualifiers::OCL_None:
4421  break;
4422 
4424  return DK_objc_strong_lifetime;
4425  case Qualifiers::OCL_Weak:
4426  return DK_objc_weak_lifetime;
4427  }
4428 
4429  if (const auto *RT =
4430  type->getBaseElementTypeUnsafe()->getAs<RecordType>()) {
4431  const RecordDecl *RD = RT->getDecl();
4432  if (const auto *CXXRD = dyn_cast<CXXRecordDecl>(RD)) {
4433  /// Check if this is a C++ object with a non-trivial destructor.
4434  if (CXXRD->hasDefinition() && !CXXRD->hasTrivialDestructor())
4435  return DK_cxx_destructor;
4436  } else {
4437  /// Check if this is a C struct that is non-trivial to destroy or an array
4438  /// that contains such a struct.
4440  return DK_nontrivial_c_struct;
4441  }
4442  }
4443 
4444  return DK_none;
4445 }
4446 
4449 }
4450 
4452  llvm::APSInt Val, unsigned Scale) {
4453  llvm::FixedPointSemantics FXSema(Val.getBitWidth(), Scale, Val.isSigned(),
4454  /*IsSaturated=*/false,
4455  /*HasUnsignedPadding=*/false);
4456  llvm::APFixedPoint(Val, FXSema).toString(Str);
4457 }
4458 
4459 AutoType::AutoType(QualType DeducedAsType, AutoTypeKeyword Keyword,
4460  TypeDependence ExtraDependence, QualType Canon,
4461  ConceptDecl *TypeConstraintConcept,
4462  ArrayRef<TemplateArgument> TypeConstraintArgs)
4463  : DeducedType(Auto, DeducedAsType, ExtraDependence, Canon) {
4464  AutoTypeBits.Keyword = (unsigned)Keyword;
4465  AutoTypeBits.NumArgs = TypeConstraintArgs.size();
4466  this->TypeConstraintConcept = TypeConstraintConcept;
4467  if (TypeConstraintConcept) {
4468  TemplateArgument *ArgBuffer = getArgBuffer();
4469  for (const TemplateArgument &Arg : TypeConstraintArgs) {
4470  addDependence(
4471  toSyntacticDependence(toTypeDependence(Arg.getDependence())));
4472 
4473  new (ArgBuffer++) TemplateArgument(Arg);
4474  }
4475  }
4476 }
4477 
4478 void AutoType::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
4479  QualType Deduced, AutoTypeKeyword Keyword,
4480  bool IsDependent, ConceptDecl *CD,
4481  ArrayRef<TemplateArgument> Arguments) {
4482  ID.AddPointer(Deduced.getAsOpaquePtr());
4483  ID.AddInteger((unsigned)Keyword);
4484  ID.AddBoolean(IsDependent);
4485  ID.AddPointer(CD);
4486  for (const TemplateArgument &Arg : Arguments)
4487  Arg.Profile(ID, Context);
4488 }
clang::Type::isIntegralType
bool isIntegralType(const ASTContext &Ctx) const
Determine whether this type is an integral type.
Definition: Type.cpp:1930
clang::TypeSpecifierWidth::LongLong
@ LongLong
clang::QualifierCollector::strip
const Type * strip(QualType type)
Collect any qualifiers on the given type and return an unqualified type.
Definition: Type.h:6506
clang::BuiltinType
This class is used for builtin types like 'int'.
Definition: Type.h:2563
clang::ElaboratedTypeKeyword
ElaboratedTypeKeyword
The elaboration keyword that precedes a qualified type name or introduces an elaborated-type-specifie...
Definition: Type.h:5462
clang::QualType::PCK_Struct
@ PCK_Struct
The type is a struct containing a field whose type is neither PCK_Trivial nor PCK_VolatileTrivial.
Definition: Type.h:1250
clang::ASTContext::getAutoType
QualType getAutoType(QualType DeducedType, AutoTypeKeyword Keyword, bool IsDependent, bool IsPack=false, ConceptDecl *TypeConstraintConcept=nullptr, ArrayRef< TemplateArgument > TypeConstraintArgs={}) const
C++11 deduced auto type.
Definition: ASTContext.cpp:5753
clang::Type::STK_FixedPoint
@ STK_FixedPoint
Definition: Type.h:2227
clang::QualType::substObjCTypeArgs
QualType substObjCTypeArgs(ASTContext &ctx, ArrayRef< QualType > typeArgs, ObjCSubstitutionContext context) const
Substitute type arguments for the Objective-C type parameters used in the subject type.
Definition: Type.cpp:1484
clang::TagDecl::hasNameForLinkage
bool hasNameForLinkage() const
Is this tag type named, either directly or via being defined in a typedef of this type?
Definition: Decl.h:3579
clang::ObjCInterfaceDecl
Represents an ObjC class declaration.
Definition: DeclObjC.h:1150
clang::VectorType::VectorType
VectorType(QualType vecType, unsigned nElements, QualType canonType, VectorKind vecKind)
Definition: Type.cpp:330
clang::ASTContext::getTypeSizeInChars
CharUnits getTypeSizeInChars(QualType T) const
Return the size of the specified (complete) type T, in characters.
Definition: ASTContext.cpp:2471
clang::Type::getObjCARCImplicitLifetime
Qualifiers::ObjCLifetime getObjCARCImplicitLifetime() const
Return the implicit lifetime for this type, which must not be dependent.
Definition: Type.cpp:4297
clang::Type::getNullability
Optional< NullabilityKind > getNullability(const ASTContext &context) const
Determine the nullability of the given type.
Definition: Type.cpp:4095
clang::FunctionProtoType::param_type_begin
param_type_iterator param_type_begin() const
Definition: Type.h:4326
clang::ASTContext::getQualifiedType
QualType getQualifiedType(SplitQualType split) const
Un-split a SplitQualType.
Definition: ASTContext.h:2126
clang::Type::isRecordType
bool isRecordType() const
Definition: Type.h:6897
clang::QualType::DK_nontrivial_c_struct
@ DK_nontrivial_c_struct
Definition: Type.h:1271
clang::Type::TypeBits
TypeBitfields TypeBits
Definition: Type.h:1862
max
__DEVICE__ int max(int __a, int __b)
Definition: __clang_cuda_math.h:196
clang::Decl::getASTContext
ASTContext & getASTContext() const LLVM_READONLY
Definition: DeclBase.cpp:414
clang::ObjCObjectType::computeSuperClassTypeSlow
void computeSuperClassTypeSlow() const
Definition: Type.cpp:1606
clang::Type::getAsArrayTypeUnsafe
const ArrayType * getAsArrayTypeUnsafe() const
A variant of getAs<> for array types which silently discards qualifiers from the outermost type.
Definition: Type.h:7355
clang::QualType::getObjCLifetime
Qualifiers::ObjCLifetime getObjCLifetime() const
Returns lifetime attribute of this type.
Definition: Type.h:1184
clang::Type::isRealType
bool isRealType() const
Definition: Type.cpp:2143
clang::ParenType::getInnerType
QualType getInnerType() const
Definition: Type.h:2695
clang::FunctionProtoType::hasTrailingReturn
bool hasTrailingReturn() const
Whether this function prototype has a trailing return type.
Definition: Type.h:4305
Visibility.h
clang::QualType::hasNonTrivialToPrimitiveCopyCUnion
bool hasNonTrivialToPrimitiveCopyCUnion() const
Check if this is or contains a C union that is non-trivial to copy, which is a union that has a membe...
Definition: Type.h:6701
clang::DeclContext::getParentASTContext
ASTContext & getParentASTContext() const
Definition: DeclBase.h:1911
clang::CC_X86FastCall
@ CC_X86FastCall
Definition: Specifiers.h:266
clang::Type::hasAttr
bool hasAttr(attr::Kind AK) const
Determine whether this type had the specified attribute applied to it (looking through top-level type...
Definition: Type.cpp:1776
clang::Type::isBlockPointerType
bool isBlockPointerType() const
Definition: Type.h:6815
Specifiers.h
clang::FunctionProtoType::getExceptionSpecType
ExceptionSpecificationType getExceptionSpecType() const
Get the kind of exception specification on this function.
Definition: Type.h:4192
clang::FunctionProtoType::hasDependentExceptionSpec
bool hasDependentExceptionSpec() const
Return whether this function has a dependent exception spec.
Definition: Type.cpp:3316
clang::interp::APInt
llvm::APInt APInt
Definition: Integral.h:27
clang::CC_Win64
@ CC_Win64
Definition: Specifiers.h:270
clang::ObjCObjectPointerType::getInterfaceType
const ObjCInterfaceType * getInterfaceType() const
If this pointer points to an Objective C @interface type, gets the type for that interface.
Definition: Type.cpp:1676
clang::QualType::PCK_ARCWeak
@ PCK_ARCWeak
The type is an Objective-C retainable pointer type that is qualified with the ARC __weak qualifier.
Definition: Type.h:1242
clang::RecordDecl::hasNonTrivialToPrimitiveCopyCUnion
bool hasNonTrivialToPrimitiveCopyCUnion() const
Definition: Decl.h:4047
clang::Type::hasSizedVLAType
bool hasSizedVLAType() const
Whether this type involves a variable-length array type with a definite size.
Definition: Type.cpp:4398
type
clang::ASTContext::getNSObjectName
IdentifierInfo * getNSObjectName() const
Retrieve the identifier 'NSObject'.
Definition: ASTContext.h:1872
clang::AttributedType
An attributed type is a type to which a type attribute has been applied.
Definition: Type.h:4761
clang::QualType::hasNonTrivialToPrimitiveDefaultInitializeCUnion
bool hasNonTrivialToPrimitiveDefaultInitializeCUnion() const
Check if this is or contains a C union that is non-trivial to default-initialize, which is a union th...
Definition: Type.h:6689
clang::FloatModeKind::LongDouble
@ LongDouble
clang::TemplateTypeParmType::getDecl
TemplateTypeParmDecl * getDecl() const
Definition: Type.h:4937
clang::Type::getTypeClassName
const char * getTypeClassName() const
Definition: Type.cpp:2969
clang::BuiltinType::getName
StringRef getName(const PrintingPolicy &Policy) const
Definition: Type.cpp:2979
clang::AttributedType::getImmediateNullability
llvm::Optional< NullabilityKind > getImmediateNullability() const
Definition: Type.cpp:4237
clang::SubstTemplateTypeParmPackType::getArgumentPack
TemplateArgument getArgumentPack() const
Definition: Type.cpp:3662
clang::toSemanticDependence
TypeDependence toSemanticDependence(TypeDependence D)
Definition: DependenceFlags.h:291
clang::Type::isStdByteType
bool isStdByteType() const
Definition: Type.cpp:2771
clang::initialize
void initialize(TemplateInstantiationCallbackPtrs &Callbacks, const Sema &TheSema)
Definition: TemplateInstCallback.h:43
clang::Type::isObjCRetainableType
bool isObjCRetainableType() const
Definition: Type.cpp:4341
clang::ento::Nullability
Nullability
Definition: CheckerHelpers.h:55
clang::SourceRange
A trivial tuple used to represent a source range.
Definition: SourceLocation.h:210
clang::DeclContext
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1356
TRIVIAL_TYPE_CLASS
#define TRIVIAL_TYPE_CLASS(Class)
Definition: Type.cpp:871
clang::ObjCSubstitutionContext::Parameter
@ Parameter
The parameter type of a method or function.
clang::Type::isVoidPointerType
bool isVoidPointerType() const
Definition: Type.cpp:589
clang::AutoType::getTypeConstraintConcept
ConceptDecl * getTypeConstraintConcept() const
Definition: Type.h:5141
clang::TST_interface
@ TST_interface
Definition: Specifiers.h:80
clang::Decl::hasAttr
bool hasAttr() const
Definition: DeclBase.h:542
clang::QualType::isNonTrivialToPrimitiveDestructiveMove
PrimitiveCopyKind isNonTrivialToPrimitiveDestructiveMove() const
Check if this is a non-trivial type that would cause a C struct transitively containing this type to ...
Definition: Type.cpp:2580
clang::TTK_Enum
@ TTK_Enum
The "enum" keyword.
Definition: Type.h:5457
clang::TemplateArgument::pack_elements
ArrayRef< TemplateArgument > pack_elements() const
Iterator range referencing all of the elements of a template argument pack.
Definition: TemplateBase.h:365
clang::NestedNameSpecifier::isDependent
bool isDependent() const
Whether this nested name specifier refers to a dependent type or not.
Definition: NestedNameSpecifier.cpp:234
clang::QualType::isConstQualified
bool isConstQualified() const
Determine whether this type is const-qualified.
Definition: Type.h:6618
clang::ConstantArrayType
Represents the canonical version of C arrays with a specified constant size.
Definition: Type.h:3001
clang::Type::STK_IntegralComplex
@ STK_IntegralComplex
Definition: Type.h:2225
clang::ASTContext::BuiltinVectorTypeInfo::ElementType
QualType ElementType
Definition: ASTContext.h:1474
clang::AttributedType::isCallingConv
bool isCallingConv() const
Definition: Type.cpp:3617
DependenceFlags.h
clang::QualifierCollector::apply
QualType apply(const ASTContext &Context, QualType QT) const
Apply the collected qualifiers to the given type.
Definition: Type.cpp:3758
clang::ObjCObjectType::isKindOfTypeAsWritten
bool isKindOfTypeAsWritten() const
Whether this is a "__kindof" type as written.
Definition: Type.h:6068
clang::ObjCObjectPointerType::stripObjCKindOfTypeAndQuals
const ObjCObjectPointerType * stripObjCKindOfTypeAndQuals(const ASTContext &ctx) const
Strip off the Objective-C "kindof" type and (with it) any protocol qualifiers.
Definition: Type.cpp:830
clang::DependentSizedExtVectorType::Profile
void Profile(llvm::FoldingSetNodeID &ID)
Definition: Type.h:3287
clang::ObjCObjectPointerType::getSuperClassType
QualType getSuperClassType() const
Retrieve the type of the superclass of this object pointer type.
Definition: Type.cpp:1685
clang::TypeWithKeyword::KeywordIsTagTypeKind
static bool KeywordIsTagTypeKind(ElaboratedTypeKeyword Keyword)
Definition: Type.cpp:2891
clang::TST_typename
@ TST_typename
Definition: Specifiers.h:81
clang::FunctionProtoType::Profile
void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx)
Definition: Type.cpp:3430
clang::Qualifiers::OCL_Weak
@ OCL_Weak
Reading or writing from this object requires a barrier call.
Definition: Type.h:178
clang::TemplateSpecializationType::isTypeAlias
bool isTypeAlias() const
Determine if this template specialization type is for a type alias template that has been substituted...
Definition: Type.h:5299
clang::Type::getArrayElementTypeNoTypeQual
const Type * getArrayElementTypeNoTypeQual() const
If this is an array type, return the element type of the array, potentially with type qualifiers miss...
Definition: Type.cpp:369
clang::ConstantArrayType::getSize
const llvm::APInt & getSize() const
Definition: Type.h:3024
clang::DependentBitIntType::isUnsigned
bool isUnsigned() const
Definition: Type.cpp:351
clang::LinkageComputer::getTypeLinkageAndVisibility
LinkageInfo getTypeLinkageAndVisibility(const Type *T)
Definition: Type.cpp:4081
clang::Type::isCharType
bool isCharType() const
Definition: Type.cpp:1961
llvm::SmallVector
Definition: LLVM.h:38
clang::ASTContext::getAtomicType
QualType getAtomicType(QualType T) const
Return the uniqued reference to the atomic type for the specified type.
Definition: ASTContext.cpp:5790
clang::SourceLocation
Encodes a location in the source.
Definition: SourceLocation.h:86
clang::QualType::isTrivialType
bool isTrivialType(const ASTContext &Context) const
Return true if this is a trivial type per (C++0x [basic.types]p9)
Definition: Type.cpp:2417
clang::QualType::getQualifiers
Qualifiers getQualifiers() const
Retrieve the set of qualifiers applied to this type.
Definition: Type.h:6586
clang::TargetCXXABI::isMicrosoft
bool isMicrosoft() const
Is this ABI an MSVC-compatible ABI?
Definition: TargetCXXABI.h:138
clang::TTK_Struct
@ TTK_Struct
The "struct" keyword.
Definition: Type.h:5445
clang::Type::STK_FloatingComplex
@ STK_FloatingComplex
Definition: Type.h:2226
clang::NamedDecl
This represents a decl that may have a name.
Definition: Decl.h:247
clang::UnaryTransformType::UnaryTransformType
UnaryTransformType(QualType BaseTy, QualType UnderlyingTy, UTTKind UKind, QualType CanonicalTy)
Definition: Type.cpp:3524
clang::TemplateTypeParmType::getIdentifier
IdentifierInfo * getIdentifier() const
Definition: Type.cpp:3648
clang::Type::isCARCBridgableType
bool isCARCBridgableType() const
Determine whether the given type T is a "bridgeable" C type.
Definition: Type.cpp:4375
TargetInfo.h
clang::Type::isWideCharType
bool isWideCharType() const
Definition: Type.cpp:1970
clang::QualType
A (possibly-)qualified type.
Definition: Type.h:731
Attr.h
clang::Type::isScalarType
bool isScalarType() const
Definition: Type.h:7183
clang::ArrayType::ArraySizeModifier
ArraySizeModifier
Capture whether this is a normal array (e.g.
Definition: Type.h:2961
clang::EST_None
@ EST_None
no exception specification
Definition: ExceptionSpecificationType.h:21
clang::Type::FunctionTypeBits
FunctionTypeBitfields FunctionTypeBits
Definition: Type.h:1868
clang::NestedNameSpecifier
Represents a C++ nested name specifier, such as "\::std::vector<int>::".
Definition: NestedNameSpecifier.h:50
clang::Qualifiers::isStrictSupersetOf
bool isStrictSupersetOf(Qualifiers Other) const
Determine whether this set of qualifiers is a strict superset of another set of qualifiers,...
Definition: Type.cpp:58
clang::Type::ScalarTypeKind
ScalarTypeKind
Definition: Type.h:2217
clang::ETK_Struct
@ ETK_Struct
The "struct" keyword introduces the elaborated-type-specifier.
Definition: Type.h:5464
clang::TST_struct
@ TST_struct
Definition: Specifiers.h:78
clang::QualType::getCanonicalType
QualType getCanonicalType() const
Definition: Type.h:6598
clang::FieldDecl
Represents a member of a struct/union/class.
Definition: Decl.h:2862
clang::Type::isFloatingType
bool isFloatingType() const
Definition: Type.cpp:2121
clang::EST_Dynamic
@ EST_Dynamic
throw(T1, T2)
Definition: ExceptionSpecificationType.h:23
clang::ASTContext::getBaseElementType
QualType getBaseElementType(const ArrayType *VAT) const
Return the innermost element type of an array type.
Definition: ASTContext.cpp:6813
clang::Qualifiers
The collection of all-type qualifiers we support.
Definition: Type.h:147
SUGARED_TYPE_CLASS
#define SUGARED_TYPE_CLASS(Class)
Definition: Type.cpp:873
clang::TargetInfo::getCXXABI
TargetCXXABI getCXXABI() const
Get the C++ ABI currently in use.
Definition: TargetInfo.h:1245
clang::QualType::stripObjCKindOfType
QualType stripObjCKindOfType(const ASTContext &ctx) const
Strip Objective-C "__kindof" types from the given type.
Definition: Type.cpp:1500
DeclCXX.h
memcpy
__DEVICE__ void * memcpy(void *__a, const void *__b, size_t __c)
Definition: __clang_cuda_device_functions.h:1549
clang::ObjCCategoryDecl::getClassInterface
ObjCInterfaceDecl * getClassInterface()
Definition: DeclObjC.h:2321
clang::QualType::PCK_ARCStrong
@ PCK_ARCStrong
The type is an Objective-C retainable pointer type that is qualified with the ARC __strong qualifier.
Definition: Type.h:1238
clang::ObjCObjectPointerType::getPointeeType
QualType getPointeeType() const
Gets the type pointed to by this ObjC pointer.
Definition: Type.h:6219
clang::ASTContext::getFunctionType
QualType getFunctionType(QualType ResultTy, ArrayRef< QualType > Args, const FunctionProtoType::ExtProtoInfo &EPI) const
Return a normal function type with a typed argument list.
Definition: ASTContext.h:1547
clang::AttributedType::isMSTypeSpec
bool isMSTypeSpec() const
Definition: Type.cpp:3604
clang::Type::getContainedDeducedType
DeducedType * getContainedDeducedType() const
Get the DeducedType whose type will be deduced for a variable with an initializer of this type.
Definition: Type.cpp:1888
clang::ETK_Enum
@ ETK_Enum
The "enum" keyword introduces the elaborated-type-specifier.
Definition: Type.h:5476
clang::TypeDependenceScope::TypeDependence
TypeDependence
Definition: DependenceFlags.h:52
clang::UsingShadowDecl
Represents a shadow declaration implicitly introduced into a scope by a (resolved) using-declaration ...
Definition: DeclCXX.h:3220
clang::TemplateSpecializationType
Represents a type template specialization; the template must be a class template, a type alias templa...
Definition: Type.h:5238
clang::Type::isRealFloatingType
bool isRealFloatingType() const
Floating point categories.
Definition: Type.cpp:2137
clang::FunctionType::getExtInfo
ExtInfo getExtInfo() const
Definition: Type.h:3892
clang::ObjCObjectPointerType::isKindOfType
bool isKindOfType() const
Whether this is a "__kindof" type.
Definition: Type.h:6293
clang::ComplexType::getElementType
QualType getElementType() const
Definition: Type.h:2669
clang::TST_enum
@ TST_enum
Definition: Specifiers.h:76
clang::QualType::getBaseTypeIdentifier
const IdentifierInfo * getBaseTypeIdentifier() const
Retrieves a pointer to the name of the base type.
Definition: Type.cpp:73
clang::CT_Cannot
@ CT_Cannot
Definition: ExceptionSpecificationType.h:55
clang::ObjCTypeParamType::getDecl
ObjCTypeParamDecl * getDecl() const
Definition: Type.h:5920
clang::Qualifiers::OCL_ExplicitNone
@ OCL_ExplicitNone
This object can be modified without requiring retains or releases.
Definition: Type.h:168
clang::QualType::withFastQualifiers
QualType withFastQualifiers(unsigned TQs) const
Definition: Type.h:948
llvm::Optional
Definition: LLVM.h:40
clang::DependentBitIntType::Profile
void Profile(llvm::FoldingSetNodeID &ID)
Definition: Type.h:6487
TypeVisitor.h
clang::Type::isVariableArrayType
bool isVariableArrayType() const
Definition: Type.h:6885
clang::Type::isVoidType
bool isVoidType() const
Definition: Type.h:7096
clang::TypePropertyCache
The type-property cache.
Definition: Type.cpp:3839
clang::Type::isCanonicalUnqualified
bool isCanonicalUnqualified() const
Determines if this type would be canonical if it had no further qualification.
Definition: Type.h:1953
clang::MacroQualifiedType::getModifiedType
QualType getModifiedType() const
Return this attributed type's modified type with no qualifiers attached to it.
Definition: Type.cpp:3460
clang::EST_Unparsed
@ EST_Unparsed
not parsed yet
Definition: ExceptionSpecificationType.h:32
clang::Type::getAsObjCQualifiedIdType
const ObjCObjectPointerType * getAsObjCQualifiedIdType() const
Definition: Type.cpp:1708
clang::Qualifiers::empty
bool empty() const
Definition: Type.h:440
clang::CC_X86ThisCall
@ CC_X86ThisCall
Definition: Specifiers.h:267
clang::isComputedNoexcept
bool isComputedNoexcept(ExceptionSpecificationType ESpecType)
Definition: ExceptionSpecificationType.h:39
clang::QualType::mayBeNotDynamicClass
bool mayBeNotDynamicClass() const
Returns true if it is not a class or if the class might not be dynamic.
Definition: Type.cpp:98
clang::ReferenceType::getPointeeTypeAsWritten
QualType getPointeeTypeAsWritten() const
Definition: Type.h:2839
clang::PrintingPolicy
Describes how types, statements, expressions, and declarations should be printed.
Definition: PrettyPrinter.h:57
clang::AutoType::getTypeConstraintArguments
ArrayRef< TemplateArgument > getTypeConstraintArguments() const
Definition: Type.h:5137
clang::ObjCInterfaceType::getDecl
ObjCInterfaceDecl * getDecl() const
Get the declaration of this interface.
Definition: Type.cpp:823
clang::Qualifiers::getObjCGCAttr
GC getObjCGCAttr() const
Definition: Type.h:326
clang::FunctionType
FunctionType - C99 6.7.5.3 - Function Declarators.
Definition: Type.h:3618
clang::ASTContext::applyObjCProtocolQualifiers
QualType applyObjCProtocolQualifiers(QualType type, ArrayRef< ObjCProtocolDecl * > protocols, bool &hasError, bool allowOnPointerType=false) const
Apply Objective-C protocol qualifiers to the given type.
Definition: ASTContext.cpp:5331
clang::ASTContext::getNSCopyingName
IdentifierInfo * getNSCopyingName()
Retrieve the identifier 'NSCopying'.
Definition: ASTContext.h:1881
clang::FunctionNoProtoType
Represents a K&R-style 'int foo()' function, which has no information available about its arguments.
Definition: Type.h:3918
clang::ObjCSubstitutionContext::Ordinary
@ Ordinary
An ordinary type.
clang::QualType::mayBeDynamicClass
bool mayBeDynamicClass() const
Returns true if it is a class and it might be dynamic.
Definition: Type.cpp:93
clang::ObjCObjectType::getInterface
ObjCInterfaceDecl * getInterface() const
Gets the interface declaration for this object type, if the base type really is an interface.
Definition: Type.h:6186
clang::TTK_Interface
@ TTK_Interface
The "__interface" keyword.
Definition: Type.h:5448
clang::SubstTemplateTypeParmType::getReplacedParameter
const TemplateTypeParmType * getReplacedParameter() const
Gets the template parameter that was substituted for.
Definition: Type.h:4983
clang::ObjCObjectPointerType::getInterfaceDecl
ObjCInterfaceDecl * getInterfaceDecl() const
If this pointer points to an Objective @interface type, gets the declaration for that interface.
Definition: Type.h:6259
TemplateName.h
clang::Type::isObjCARCBridgableType
bool isObjCARCBridgableType() const
Determine whether the given type T is a "bridgable" Objective-C type, which is either an Objective-C ...
Definition: Type.cpp:4370
clang::Qualifiers::addConsistentQualifiers
void addConsistentQualifiers(Qualifiers qs)
Add the qualifiers from the given set to this set, given that they don't conflict.
Definition: Type.h:478
clang::PrintingPolicy::Bool
unsigned Bool
Whether we can use 'bool' rather than '_Bool' (even if the language doesn't actually have 'bool',...
Definition: PrettyPrinter.h:193
clang::DependentDecltypeType::DependentDecltypeType
DependentDecltypeType(const ASTContext &Context, Expr *E)
Definition: Type.cpp:3516
clang::ASTContext::getDecayedType
QualType getDecayedType(QualType T) const
Return the uniqued reference to the decayed version of the given type.
Definition: ASTContext.cpp:3332
clang::Type::isElaboratedTypeSpecifier
bool isElaboratedTypeSpecifier() const
Determine wither this type is a C++ elaborated-type-specifier.
Definition: Type.cpp:2954
clang::QualType::PCK_VolatileTrivial
@ PCK_VolatileTrivial
The type would be trivial except that it is volatile-qualified.
Definition: Type.h:1234
clang::RecordDecl::isNonTrivialToPrimitiveDestroy
bool isNonTrivialToPrimitiveDestroy() const
Definition: Decl.h:4023
clang::ObjCTypeParamType::Profile
void Profile(llvm::FoldingSetNodeID &ID)
Definition: Type.cpp:3805
clang::LinkageComputer::computeTypeLinkageInfo
LinkageInfo computeTypeLinkageInfo(const Type *T)
Definition: Type.cpp:3994
clang::DependentBitIntType::DependentBitIntType
DependentBitIntType(const ASTContext &Context, bool IsUnsigned, Expr *NumBits)
Definition: Type.cpp:345
clang::ObjCObjectPointerType::getObjectType
const ObjCObjectType * getObjectType() const
Gets the type pointed to by this ObjC pointer.
Definition: Type.h:6244
clang::ObjCObjectType::isUnspecialized
bool isUnspecialized() const
Determine whether this object type is "unspecialized", meaning that it has no type arguments.
Definition: Type.h:6051
clang::Type::isPromotableIntegerType
bool isPromotableIntegerType() const
More type predicates useful for type checking/promotion.
Definition: Type.cpp:2780
clang::Type::ObjCObjectTypeBits
ObjCObjectTypeBitfields ObjCObjectTypeBits
Definition: Type.h:1869
clang::Type::isObjCIdOrObjectKindOfType
bool isObjCIdOrObjectKindOfType(const ASTContext &ctx, const ObjCObjectType *&bound) const
Whether the type is Objective-C 'id' or a __kindof type of an object type, e.g., __kindof NSView * or...
Definition: Type.cpp:680
clang::DependentSizedMatrixType
Represents a matrix type where the type and the number of rows and columns is dependent on a template...
Definition: Type.h:3586
clang::CC_X86StdCall
@ CC_X86StdCall
Definition: Specifiers.h:265
clang::Type::hasFloatingRepresentation
bool hasFloatingRepresentation() const
Determine whether this type has a floating-point representation of some sort, e.g....
Definition: Type.cpp:2130
clang::EnumDecl
Represents an enum.
Definition: Decl.h:3635
clang::Type::STK_Integral
@ STK_Integral
Definition: Type.h:2223
clang::ObjCObjectType::isSpecializedAsWritten
bool isSpecializedAsWritten() const
Determine whether this object type was written with type arguments.
Definition: Type.h:6045
clang::ObjCSubstitutionContext
ObjCSubstitutionContext
The kind of type we are substituting Objective-C type arguments into.
Definition: Type.h:700
clang::Type
The base class of the type hierarchy.
Definition: Type.h:1556
clang::UsingShadowDecl::getTargetDecl
NamedDecl * getTargetDecl() const
Gets the underlying declaration which has been brought into the local scope.
Definition: DeclCXX.h:3284
clang::Type::hasSignedIntegerRepresentation
bool hasSignedIntegerRepresentation() const
Determine whether this type has an signed integer representation of some sort, e.g....
Definition: Type.cpp:2058
Decl.h
clang::CC_OpenCLKernel
@ CC_OpenCLKernel
Definition: Specifiers.h:277
clang::DependentUnaryTransformType::DependentUnaryTransformType
DependentUnaryTransformType(const ASTContext &C, QualType BaseType, UTTKind UKind)
Definition: Type.cpp:3530
clang::SubstTemplateTypeParmPackType::getReplacedParameter
const TemplateTypeParmType * getReplacedParameter() const
Gets the template parameter that was substituted for.
Definition: Type.h:5042
clang::TypedefType
Definition: Type.h:4464
clang::ObjCObjectType
Represents a class type in Objective C.
Definition: Type.h:5951
clang::EnumDecl::isComplete
bool isComplete() const
Returns true if this can be considered a complete type.
Definition: Decl.h:3849
DeclObjC.h
clang::Type::isAggregateType
bool isAggregateType() const
Determines whether the type is a C++ aggregate type or C aggregate or union type.
Definition: Type.cpp:2210
clang::ASTContext::getAttributedType
QualType getAttributedType(attr::Kind attrKind, QualType modifiedType, QualType equivalentType)
Definition: ASTContext.cpp:4704
AddressSpaces.h
clang::Type::getAsStructureType
const RecordType * getAsStructureType() const
Definition: Type.cpp:641
uint64_t
unsigned long uint64_t
Definition: hlsl_basic_types.h:24
clang::ASTContext::getBlockPointerType
QualType getBlockPointerType(QualType T) const
Return the uniqued reference to the type for a block of the specified type.
Definition: ASTContext.cpp:3373
clang::Type::hasAutoForTrailingReturnType
bool hasAutoForTrailingReturnType() const
Determine whether this type was written with a leading 'auto' corresponding to a trailing return type...
Definition: Type.cpp:1893
clang::Type::canHaveNullability
bool canHaveNullability(bool ResultIfUnknown=true) const
Determine whether the given type can have a nullability specifier applied to it, i....
Definition: Type.cpp:4108
clang::Type::isObjCARCImplicitlyUnretainedType
bool isObjCARCImplicitlyUnretainedType() const
Determines if this type, which must satisfy isObjCLifetimeType(), is implicitly __unsafe_unretained r...
Definition: Type.cpp:4303
clang::EST_DependentNoexcept
@ EST_DependentNoexcept
noexcept(expression), value-dependent
Definition: ExceptionSpecificationType.h:27
clang::DecltypeType::desugar
QualType desugar() const
Remove a single level of sugar.
Definition: Type.cpp:3509
clang::Qualifiers::getAddressSpace
LangAS getAddressSpace() const
Definition: Type.h:378
clang::EST_Unevaluated
@ EST_Unevaluated
not evaluated yet, for special member function
Definition: ExceptionSpecificationType.h:30
clang::QualType::getNonPackExpansionType
QualType getNonPackExpansionType() const
Remove an outer pack expansion type (if any) from this type.
Definition: Type.cpp:3151
PrettyPrinter.h
clang::TagType::isBeingDefined
bool isBeingDefined() const
Determines whether this type is in the process of being defined.
Definition: Type.cpp:3554
clang::QualType::isCXX11PODType
bool isCXX11PODType(const ASTContext &Context) const
Return true if this is a POD type according to the more relaxed rules of the C++11 standard,...
Definition: Type.cpp:2701
APSInt
llvm::APSInt APSInt
Definition: ByteCodeEmitter.cpp:19
clang::Type::isCUDADeviceBuiltinTextureType
bool isCUDADeviceBuiltinTextureType() const
Check if the type is the CUDA device builtin texture type.
Definition: Type.cpp:4392
clang::ObjCObjectTypeImpl::Profile
void Profile(llvm::FoldingSetNodeID &ID)
Definition: Type.cpp:3788
clang::EST_NoexceptTrue
@ EST_NoexceptTrue
noexcept(expression), evals to 'true'
Definition: ExceptionSpecificationType.h:29
clang::Qualifiers::hasNonFastQualifiers
bool hasNonFastQualifiers() const
Return true if the set contains any qualifiers which require an ExtQuals node to be allocated.
Definition: Type.h:431
clang::IdentifierInfo::isStr
bool isStr(const char(&Str)[StrLen]) const
Return true if this is the identifier for the specified string.
Definition: IdentifierTable.h:176
clang::Type::isLiteralType
bool isLiteralType(const ASTContext &Ctx) const
Return true if this is a literal type (C++11 [basic.types]p10)
Definition: Type.cpp:2584
clang::QualType::DK_cxx_destructor
@ DK_cxx_destructor
Definition: Type.h:1268
clang::DependentSizedMatrixType::Profile
void Profile(llvm::FoldingSetNodeID &ID)
Definition: Type.h:3608
clang::TypeWithKeyword::getKeywordName
static StringRef getKeywordName(ElaboratedTypeKeyword Keyword)
Definition: Type.cpp:2906
clang::Type::isStructuralType
bool isStructuralType() const
Determine if this type is a structural type, per C++20 [temp.param]p7.
Definition: Type.cpp:2649
clang::ObjCProtocolQualifiers< ObjCObjectType >::initialize
void initialize(ArrayRef< ObjCProtocolDecl * > protocols)
Definition: Type.h:5837
clang::LinkageInfo::merge
void merge(LinkageInfo other)
Merge both linkage and visibility.
Definition: Visibility.h:132
clang::ArrayType::getIndexTypeCVRQualifiers
unsigned getIndexTypeCVRQualifiers() const
Definition: Type.h:2986
clang::Type::isReferenceType
bool isReferenceType() const
Definition: Type.h:6819
clang::Type::getObjCSubstitutions
Optional< ArrayRef< QualType > > getObjCSubstitutions(const DeclContext *dc) const
Retrieve the set of substitutions required when accessing a member of the Objective-C receiver type t...
Definition: Type.cpp:1513
getAsSugar
static const T * getAsSugar(const Type *Cur)
This will check for a T (which should be a Type which can act as sugar, such as a TypedefType) by rem...
Definition: Type.cpp:506
TemplateBase.h
clang::CC_Swift
@ CC_Swift
Definition: Specifiers.h:278
clang::Type::hasUnnamedOrLocalType
bool hasUnnamedOrLocalType() const
Whether this type is or contains a local or unnamed type.
Definition: Type.cpp:3989
clang::Type::STK_BlockPointer
@ STK_BlockPointer
Definition: Type.h:2219
clang::QualType::hasNonTrivialObjCLifetime
bool hasNonTrivialObjCLifetime() const
Definition: Type.h:1188
clang::PackExpansionType::getPattern
QualType getPattern() const
Retrieve the pattern of this pack expansion, which is the type that will be repeatedly instantiated w...
Definition: Type.h:5788
clang::ASTContext::getExtVectorType
QualType getExtVectorType(QualType VectorType, unsigned NumElts) const
Return the unique reference to an extended vector type of the specified element type and size.
Definition: ASTContext.cpp:4081
clang::Type::isBitIntType
bool isBitIntType() const
Definition: Type.h:7031
clang::Type::acceptsObjCTypeParams
bool acceptsObjCTypeParams() const
Determines if this is an ObjC interface type that may accept type parameters.
Definition: Type.cpp:1595
clang::toSyntacticDependence
TypeDependence toSyntacticDependence(TypeDependence D)
Definition: DependenceFlags.h:288
clang::ElaboratedType
Represents a type that was referred to using an elaborated type keyword, e.g., struct S,...
Definition: Type.h:5538
clang::Expr::isTypeDependent
bool isTypeDependent() const
Determines whether the type of this expression depends on.
Definition: Expr.h:185
clang::TypeWithKeyword::getTagTypeKindForKeyword
static TagTypeKind getTagTypeKindForKeyword(ElaboratedTypeKeyword Keyword)
Converts an elaborated type keyword into a TagTypeKind.
Definition: Type.cpp:2876
clang::RecordType
A helper class that allows the use of isa/cast/dyncast to detect TagType objects of structs/unions/cl...
Definition: Type.h:4706
DeclTemplate.h
clang::Type::isSignedIntegerOrEnumerationType
bool isSignedIntegerOrEnumerationType() const
Determines whether this is an integer type that is signed or an enumeration types whose underlying ty...
Definition: Type.cpp:2039
clang::PackExpansionType
Represents a pack expansion of types.
Definition: Type.h:5767
clang::Type::ArrayTypeBits
ArrayTypeBitfields ArrayTypeBits
Definition: Type.h:1863
clang::minLinkage
Linkage minLinkage(Linkage L1, Linkage L2)
Compute the minimum linkage given two linkages.
Definition: Linkage.h:120
clang::TemplateArgumentListInfo
A convenient class for passing around template argument information.
Definition: TemplateBase.h:563
clang::Linkage
Linkage
Describes the different kinds of linkage (C++ [basic.link], C99 6.2.2) that an entity may have.
Definition: Linkage.h:23
clang::QualType::getNonLValueExprType
QualType getNonLValueExprType(const ASTContext &Context) const
Determine the type of a (typically non-lvalue) expression with the specified result type.
Definition: Type.cpp:3158
clang::Type::getAsTagDecl
TagDecl * getAsTagDecl() const
Retrieves the TagDecl that this type refers to, either because the type is a TagType or because it is...
Definition: Type.cpp:1767
clang::TagTypeKind
TagTypeKind
The kind of a tag type.
Definition: Type.h:5443
clang::RecordDecl::hasNonTrivialToPrimitiveDestructCUnion
bool hasNonTrivialToPrimitiveDestructCUnion() const
Definition: Decl.h:4039
clang::QualType::getAddressSpace
LangAS getAddressSpace() const
Return the address space of this type.
Definition: Type.h:6680
clang::Type::isClassType
bool isClassType() const
Definition: Type.cpp:557
clang::QualType::PDIK_Struct
@ PDIK_Struct
The type is a struct containing a field whose type is not PCK_Trivial.
Definition: Type.h:1214
GCCTypeClass::Complex
@ Complex
clang::PrintingPolicy::MSWChar
unsigned MSWChar
When true, print the built-in wchar_t type as __wchar_t.
Definition: PrettyPrinter.h:234
ExceptionSpecificationType.h
DeclBase.h
clang::Qualifiers::OCL_Strong
@ OCL_Strong
Assigning into this object requires the old value to be released and the new value to be retained.
Definition: Type.h:175
clang::XRayInstrKind::None
constexpr XRayInstrMask None
Definition: XRayInstr.h:38
clang::DependentAddressSpaceType::Profile
void Profile(llvm::FoldingSetNodeID &ID)
Definition: Type.h:3243
clang::TypePropertyCache::ensure
static void ensure(const Type *T)
Definition: Type.cpp:3851
clang::ConceptDecl
Declaration of a C++2a concept.
Definition: DeclTemplate.h:3253
clang::MacroQualifiedType::getMacroIdentifier
const IdentifierInfo * getMacroIdentifier() const
Definition: Type.h:4499
clang::CanThrowResult
CanThrowResult
Possible results from evaluation of a noexcept expression.
Definition: ExceptionSpecificationType.h:54
clang::Decl::isInStdNamespace
bool isInStdNamespace() const
Definition: DeclBase.cpp:394
clang::ASTContext::getAsArrayType
const ArrayType * getAsArrayType(QualType T) const
Type Query functions.
Definition: ASTContext.cpp:6702
clang::Type::isAnyCharacterType
bool isAnyCharacterType() const
Determine whether this type is any of the built-in character types.
Definition: Type.cpp:1997
clang::QualType::getAtomicUnqualifiedType
QualType getAtomicUnqualifiedType() const
Remove all qualifiers including _Atomic.
Definition: Type.cpp:1507
clang::CT_Dependent
@ CT_Dependent
Definition: ExceptionSpecificationType.h:56
clang::AttributedType::stripOuterNullability
static Optional< NullabilityKind > stripOuterNullability(QualType &T)
Strip off the top-level nullability annotation on the given type, if it's there.
Definition: Type.cpp:4249
clang::VectorType
Represents a GCC generic vector type.
Definition: Type.h:3301
clang::TemplateSpecializationType::anyInstantiationDependentTemplateArguments
static bool anyInstantiationDependentTemplateArguments(ArrayRef< TemplateArgumentLoc > Args)
Definition: Type.cpp:3692
clang::ObjCProtocolQualifiers::qual_begin
qual_iterator qual_begin() const
Definition: Type.h:5851
clang::ASTContext
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:208
clang::ObjCSubstitutionContext::Result
@ Result
The result type of a method or function.
clang::ASTContext::getSizeType
CanQualType getSizeType() const
Return the unique type for "size_t" (C99 7.17), defined in <stddef.h>.
Definition: ASTContext.cpp:5847
clang::ObjCObjectType::getTypeArgs
ArrayRef< QualType > getTypeArgs() const
Retrieve the type arguments of this object type (semantically).
Definition: Type.cpp:770
clang::ReferenceType::isSpelledAsLValue
bool isSpelledAsLValue() const
Definition: Type.h:2836
clang::DependentDecltypeType::Profile
void Profile(llvm::FoldingSetNodeID &ID)
Definition: Type.h:4615
clang::ArrayType
Represents an array type, per C99 6.7.5.2 - Array Declarators.
Definition: Type.h:2955
NestedNameSpecifier.h
clang::ConstantMatrixType
Represents a concrete matrix type with constant number of rows and columns.
Definition: Type.h:3527
LangOptions.h
clang::MemberPointerType::getPointeeType
QualType getPointeeType() const
Definition: Type.h:2919
clang::ObjCObjectType::ObjCObjectType
ObjCObjectType(QualType Canonical, QualType Base, ArrayRef< QualType > typeArgs, ArrayRef< ObjCProtocolDecl * > protocols, bool isKindOf)
Definition: Type.cpp:730
clang::QualType::isNonWeakInMRRWithObjCWeak
bool isNonWeakInMRRWithObjCWeak(const ASTContext &Context) const
Definition: Type.cpp:2527
clang::QualType::isCXX98PODType
bool isCXX98PODType(const ASTContext &Context) const
Return true if this is a POD type according to the rules of the C++98 standard, regardless of the cur...
Definition: Type.cpp:2368
clang::Type::getAs
const T * getAs() const
Member-template getAs<specific type>'.
Definition: Type.h:7302
clang::Type::isComplexType
bool isComplexType() const
isComplexType() does not include complex integers (a GCC extension).
Definition: Type.cpp:601
clang::ConstantMatrixType::ConstantMatrixType
ConstantMatrixType(QualType MatrixElementType, unsigned NRows, unsigned NColumns, QualType CanonElementType)
Definition: Type.cpp:303
clang::FunctionProtoType::ExceptionSpecInfo::Exceptions
ArrayRef< QualType > Exceptions
Explicitly-specified list of exception types.
Definition: Type.h:4018
clang::ASTContext::getRValueReferenceType
QualType getRValueReferenceType(QualType T) const
Return the uniqued reference to the type for an rvalue reference to the specified type.
Definition: ASTContext.cpp:3445
clang::QualType::DK_none
@ DK_none
Definition: Type.h:1267
clang::QualType::PDIK_Trivial
@ PDIK_Trivial
The type does not fall into any of the following categories.
Definition: Type.h:1203
clang::AutoType::getKeyword
AutoTypeKeyword getKeyword() const
Definition: Type.h:5157
clang::BitIntType::BitIntType
BitIntType(bool isUnsigned, unsigned NumBits)
Definition: Type.cpp:341
clang::MatrixType::MatrixType
MatrixType(QualType ElementTy, QualType CanonElementTy)
clang::TemplateArgument
Represents a template argument.
Definition: TemplateBase.h:61
clang::EST_DynamicNone
@ EST_DynamicNone
throw()
Definition: ExceptionSpecificationType.h:22
clang::CC_AMDGPUKernelCall
@ CC_AMDGPUKernelCall
Definition: Specifiers.h:284
clang::SubstTemplateTypeParmType::getReplacementType
QualType getReplacementType() const
Gets the type that was substituted for the template parameter.
Definition: Type.h:4989
clang::ASTContext::getObjCInterfaceType
QualType getObjCInterfaceType(const ObjCInterfaceDecl *Decl, ObjCInterfaceDecl *PrevDecl=nullptr) const
getObjCInterfaceType - Return the unique reference to the type for the specified ObjC interface decl.
Definition: ASTContext.cpp:5541
clang::Type::isVectorType
bool isVectorType() const
Definition: Type.h:6909
clang::Type::isChar8Type
bool isChar8Type() const
Definition: Type.cpp:1977
clang::Type::getPointeeCXXRecordDecl
const CXXRecordDecl * getPointeeCXXRecordDecl() const
If this is a pointer or reference to a RecordType, return the CXXRecordDecl that the type refers to.
Definition: Type.cpp:1744
clang::FunctionProtoType::getParamType
QualType getParamType(unsigned i) const
Definition: Type.h:4169
clang::Type::getSveEltType
QualType getSveEltType(const ASTContext &Ctx) const
Returns the representative type for the element of an SVE builtin type.
Definition: Type.cpp:2347
clang::ast_matchers::typedefType
const AstTypeMatcher< TypedefType > typedefType
Matches typedef types.
Definition: ASTMatchersInternal.cpp:1055
clang::Decl::getCanonicalDecl
virtual Decl * getCanonicalDecl()
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclBase.h:910
clang::Type::isObjCIndirectLifetimeType
bool isObjCIndirectLifetimeType() const
Definition: Type.cpp:4347
clang::QualType::getSplitDesugaredType
SplitQualType getSplitDesugaredType() const
Definition: Type.h:1047
clang::MacroQualifiedType
Sugar type that represents a type that was qualified by a qualifier written as a macro invocation.
Definition: Type.h:4484
clang::ASTContext::getBuiltinVectorTypeInfo
BuiltinVectorTypeInfo getBuiltinVectorTypeInfo(const BuiltinType *VecTy) const
Returns the element type, element count and number of vectors (in case of tuple) for a builtin vector...
Definition: ASTContext.cpp:3842
clang::ConstantArrayType::getMaxSizeBits
static unsigned getMaxSizeBits(const ASTContext &Context)
Determine the maximum number of active bits that an array's size can require, which limits the maximu...
Definition: Type.cpp:176
clang::Type::isLValueReferenceType
bool isLValueReferenceType() const
Definition: Type.h:6823
clang::ASTContext::getTypeSize
uint64_t getTypeSize(QualType T) const
Return the size of the specified (complete) type T, in bits.
Definition: ASTContext.h:2285
clang::TypedefNameDecl::getUnderlyingType
QualType getUnderlyingType() const
Definition: Decl.h:3262
Linkage.h
clang::ObjCInterfaceDecl::getTypeParamList
ObjCTypeParamList * getTypeParamList() const
Retrieve the type parameters of this class.
Definition: DeclObjC.cpp:321
clang::TypeOfExprType::desugar
QualType desugar() const
Remove a single level of sugar.
Definition: Type.cpp:3483
IdentifierTable.h
clang::AutoType
Represents a C++11 auto or C++14 decltype(auto) type, possibly constrained by a type-constraint.
Definition: Type.h:5107
clang::ConstantMatrixType::getNumColumns
unsigned getNumColumns() const
Returns the number of columns in the matrix.
Definition: Type.h:3548
clang::VariableArrayType::getSizeExpr
Expr * getSizeExpr() const
Definition: Type.h:3124
clang::TemplateArgumentLoc
Location wrapper for a TemplateArgument.
Definition: TemplateBase.h:457
clang::Type::isObjCQualifiedInterfaceType
bool isObjCQualifiedInterfaceType() const
Definition: Type.cpp:1704
Type.h
clang::Type::VectorTypeBits
VectorTypeBitfields VectorTypeBits
Definition: Type.h:1873
clang::Expr::isInstantiationDependent
bool isInstantiationDependent() const
Whether this expression is instantiation-dependent, meaning that it depends in some way on.
Definition: Expr.h:214
clang::Type::isSizelessType
bool isSizelessType() const
As an extension, we classify types as one of "sized" or "sizeless"; every type is one or the other.
Definition: Type.cpp:2321
Expr.h
clang::Qualifiers::hasObjCLifetime
bool hasObjCLifetime() const
Definition: Type.h:351
clang::ObjCObjectPointerType::qual_empty
bool qual_empty() const
Definition: Type.h:6336
clang::LangAS::opencl_constant
@ opencl_constant
ASTContext.h
clang::FunctionProtoType::canThrow
CanThrowResult canThrow() const
Determine whether this function type has a non-throwing exception specification.
Definition: Type.cpp:3337
clang::CallingConv
CallingConv
CallingConv - Specifies the calling convention that a function uses.
Definition: Specifiers.h:263
clang::DependentTypeOfExprType::Profile
void Profile(llvm::FoldingSetNodeID &ID)
Definition: Type.h:4549
clang::FunctionProtoType::getParamTypes
ArrayRef< QualType > getParamTypes() const
Definition: Type.h:4174
clang::Type::isNothrowT
bool isNothrowT() const
Definition: Type.cpp:2753
clang::Type::isStructureType
bool isStructureType() const
Definition: Type.cpp:563
clang::TemplateName::Template
@ Template
A single template declaration.
Definition: TemplateName.h:209
clang::TagDecl
Represents the declaration of a struct/union/class/enum.
Definition: Decl.h:3355
clang::Type::getPointeeType
QualType getPointeeType() const
If this is a pointer, ObjC object pointer, or block pointer, this returns the respective pointee.
Definition: Type.cpp:625
clang::LinkageInfo
Definition: Visibility.h:52
clang::Type::getCanonicalTypeInternal
QualType getCanonicalTypeInternal() const
Definition: Type.h:2527
clang::MacroQualifiedType::getUnderlyingType
QualType getUnderlyingType() const
Definition: Type.h:4500
clang::TTK_Class
@ TTK_Class
The "class" keyword.
Definition: Type.h:5454
clang::ObjCObjectType::getBaseType
QualType getBaseType() const
Gets the base type of this object type.
Definition: Type.h:6014
clang::Qualifiers::CVRMask
@ CVRMask
Definition: Type.h:153
clang::ASTContext::getObjCObjectType
QualType getObjCObjectType(QualType Base, ObjCProtocolDecl *const *Protocols, unsigned NumProtocols) const
Legacy interface: cannot provide type arguments or __kindof.
Definition: ASTContext.cpp:5242
clang::SplitQualType::Ty
const Type * Ty
The locally-unqualified type.
Definition: Type.h:672
clang::Type::getAsCXXRecordDecl
CXXRecordDecl * getAsCXXRecordDecl() const
Retrieves the CXXRecordDecl that this type refers to, either because the type is a RecordType or beca...
Definition: Type.cpp:1759
clang::TypePropertyCache::get
static CachedProperties get(QualType T)
Definition: Type.cpp:3841
clang::TTK_Union
@ TTK_Union
The "union" keyword.
Definition: Type.h:5451
clang::TemplateName::SubstTemplateTemplateParmPack
@ SubstTemplateTemplateParmPack
A template template parameter pack that has been substituted for a template template argument pack,...
Definition: TemplateName.h:233
clang::Type::isVariablyModifiedType
bool isVariablyModifiedType() const
Whether this type is a variably-modified type (C99 6.7.5).
Definition: Type.h:2262
clang::Type::DependentTemplateSpecializationTypeBits
DependentTemplateSpecializationTypeBitfields DependentTemplateSpecializationTypeBits
Definition: Type.h:1877
clang::SubstTemplateTypeParmType
Represents the result of substituting a type for a template type parameter.
Definition: Type.h:4971
clang::Type::isAnyComplexType
bool isAnyComplexType() const
Definition: Type.h:6905
clang::ASTContext::getComplexType
QualType getComplexType(QualType T) const
Return the uniqued reference to the type for a complex number with the specified element type.
Definition: ASTContext.cpp:3257
clang::ASTContext::getConstantMatrixType
QualType getConstantMatrixType(QualType ElementType, unsigned NumRows, unsigned NumColumns) const
Return the unique reference to the matrix type of the specified element type and size.
Definition: ASTContext.cpp:4151
clang::MemberPointerType::getClass
const Type * getClass() const
Definition: Type.h:2933
clang::QualifierCollector
A qualifier set is used to build a set of qualifiers.
Definition: Type.h:6499
clang::Type::getLocallyUnqualifiedSingleStepDesugaredType
QualType getLocallyUnqualifiedSingleStepDesugaredType() const
Pull a single level of sugar off of this locally-unqualified type.
Definition: Type.cpp:422
clang::ASTContext::getSubstTemplateTypeParmType
QualType getSubstTemplateTypeParmType(const TemplateTypeParmType *Replaced, QualType Replacement) const
Retrieve a substitution-result type.
Definition: ASTContext.cpp:4746
clang::Qualifiers::hasAddressSpace
bool hasAddressSpace() const
Definition: Type.h:377
clang::TypeVisitor
An operation on a type.
Definition: TypeVisitor.h:64
clang::Stmt::Profile
void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, bool Canonical) const
Produce a unique representation of the given statement.
Definition: StmtProfile.cpp:2342
clang::FunctionProtoType::isTemplateVariadic
bool isTemplateVariadic() const
Determines whether this function prototype contains a parameter pack at the end.
Definition: Type.cpp:3370
Base
clang::Type::isUnsignedIntegerOrEnumerationType
bool isUnsignedIntegerOrEnumerationType() const
Determines whether this is an integer type that is unsigned or an enumeration types whose underlying ...
Definition: Type.cpp:2089
clang::TagDecl::isCompleteDefinition
bool isCompleteDefinition() const
Return true if this decl has its body fully specified.
Definition: Decl.h:3460
clang::toTypeDependence
TypeDependence toTypeDependence(ExprDependence D)
Definition: DependenceFlags.h:275
clang::MatrixType::getElementType
QualType getElementType() const
Returns type of the elements being stored in the matrix.
Definition: Type.h:3505
clang::Type::isEnumeralType
bool isEnumeralType() const
Definition: Type.h:6901
clang::QualType::isTriviallyRelocatableType
bool isTriviallyRelocatableType(const ASTContext &Context) const
Return true if this is a trivially relocatable type.
Definition: Type.cpp:2508
clang::AtomicType::getValueType
QualType getValueType() const
Gets the type contained by this atomic type, i.e.
Definition: Type.h:6388
clang::AutoTypeKeyword
AutoTypeKeyword
Which keyword(s) were used to create an AutoType.
Definition: Type.h:1519
clang::BlockPointerType
Pointer to a block type.
Definition: Type.h:2792
clang::Type::TypeClass
TypeClass
Definition: Type.h:1558
clang::Type::getLinkageAndVisibility
LinkageInfo getLinkageAndVisibility() const
Determine the linkage and visibility of this type.
Definition: Type.cpp:4090
clang::QualType::hasNonTrivialToPrimitiveDestructCUnion
bool hasNonTrivialToPrimitiveDestructCUnion() const
Check if this is or contains a C union that is non-trivial to destruct, which is a union that has a m...
Definition: Type.h:6695
clang::Type::getAsObjCInterfaceType
const ObjCObjectType * getAsObjCInterfaceType() const
Definition: Type.cpp:1728
clang::FunctionProtoType::getExceptionType
QualType getExceptionType(unsigned i) const
Return the ith exception type, where 0 <= i < getNumExceptions().
Definition: Type.h:4243
clang::Type::getTypeClass
TypeClass getTypeClass() const
Definition: Type.h:1927
clang::DecltypeType::DecltypeType
DecltypeType(Expr *E, QualType underlyingType, QualType can=QualType())
Definition: Type.cpp:3495
clang::AdjustedType
Represents a type which was implicitly adjusted by the semantic engine for arbitrary reasons.
Definition: Type.h:2741
clang::Qualifiers::OCL_Autoreleasing
@ OCL_Autoreleasing
Assigning into this object requires a lifetime extension.
Definition: Type.h:181
clang::QualType::split
SplitQualType split() const
Divides a QualType into its unqualified type and a set of local qualifiers.
Definition: Type.h:6567
clang::TagType::getDecl
TagDecl * getDecl() const
Definition: Type.cpp:3550
clang::IncompleteArrayType
Represents a C array with an unspecified size.
Definition: Type.h:3061
clang::ASTContext::getFunctionNoProtoType
QualType getFunctionNoProtoType(QualType ResultTy, const FunctionType::ExtInfo &Info) const
Return a K&R style C function type like 'int()'.
Definition: ASTContext.cpp:4267
clang::Qualifiers::ObjCLifetime
ObjCLifetime
Definition: Type.h:162
clang::VectorType::getVectorKind
VectorKind getVectorKind() const
Definition: Type.h:3348
clang::ETK_None
@ ETK_None
No keyword precedes the qualified type name.
Definition: Type.h:5483
clang::QualType::getUnqualifiedType
QualType getUnqualifiedType() const
Retrieve the unqualified variant of the given type, removing as little sugar as possible.
Definition: Type.h:6639
clang::Type::isObjCLifetimeType
bool isObjCLifetimeType() const
Returns true if objects of this type have lifetime semantics under ARC.
Definition: Type.cpp:4361
CharUnits.h
clang::DependentVectorType::Profile
void Profile(llvm::FoldingSetNodeID &ID)
Definition: Type.h:3407
TargetCXXABI.h
clang::CC_C
@ CC_C
Definition: Specifiers.h:264
clang::QualType::PCK_Trivial
@ PCK_Trivial
The type does not fall into any of the following categories.
Definition: Type.h:1229
clang::Type::isObjCObjectPointerType
bool isObjCObjectPointerType() const
Definition: Type.h:6935
clang::Type::isVLSTBuiltinType
bool isVLSTBuiltinType() const
Determines if this is a sizeless type supported by the 'arm_sve_vector_bits' type attribute,...
Definition: Type.cpp:2323
clang::ObjCCategoryDecl
ObjCCategoryDecl - Represents a category declaration.
Definition: DeclObjC.h:2276
clang::UnaryTransformType
A unary type transform, which is a type constructed from another.
Definition: Type.h:4624
clang::Type::hasIntegerRepresentation
bool hasIntegerRepresentation() const
Determine whether this type has an integer representation of some sort, e.g., it is an integer type o...
Definition: Type.cpp:1898
clang::Type::isObjCIndependentClassType
bool isObjCIndependentClassType() const
Definition: Type.cpp:4335
clang::DeducedType::isDeduced
bool isDeduced() const
Definition: Type.h:5095
clang::Type::isAlignValT
bool isAlignValT() const
Definition: Type.cpp:2762
clang::ASTContext::UnsignedCharTy
CanQualType UnsignedCharTy
Definition: ASTContext.h:1106
clang::TemplateTypeParmType
Definition: Type.h:4892
clang::DeducedType::getDeducedType
QualType getDeducedType() const
Get the type deduced for this placeholder type, or null if it has not been deduced.
Definition: Type.h:5094
clang::TagDecl::isClass
bool isClass() const
Definition: Decl.h:3560
clang::DecltypeType::getUnderlyingType
QualType getUnderlyingType() const
Definition: Type.h:4592
clang::RecordType::hasConstFields
bool hasConstFields() const
Recursively check all fields in the record for const-ness.
Definition: Type.cpp:3558
clang::Type::isBlockCompatibleObjCPointerType
bool isBlockCompatibleObjCPointerType(ASTContext &ctx) const
Definition: Type.cpp:4264
clang::Type::isArithmeticType
bool isArithmeticType() const
Definition: Type.cpp:2152
clang::Type::castAs
const T * castAs() const
Member-template castAs<specific type>.
Definition: Type.h:7369
clang::ObjCProtocolQualifiers< ObjCObjectType >::qual_empty
bool qual_empty() const
Definition: Type.h:5854
clang::ArrayType::getSizeModifier
ArraySizeModifier getSizeModifier() const
Definition: Type.h:2978
clang::QualType::getDesugaredType
QualType getDesugaredType(const ASTContext &Context) const
Return the specified type with any "sugar" removed from the type.
Definition: Type.h:1043
clang::TemplateName::getKind
NameKind getKind() const
Definition: TemplateName.cpp:84
clang::ConstantArrayType::getSizeExpr
const Expr * getSizeExpr() const
Definition: Type.h:3025
clang::QualType::IgnoreParens
QualType IgnoreParens() const
Returns the specified type after dropping any outer-level parentheses.
Definition: Type.h:1062
clang::ObjCObjectPointerType
Represents a pointer to an Objective C object.
Definition: Type.h:6207
clang::SubstTemplateTypeParmPackType::Profile
void Profile(llvm::FoldingSetNodeID &ID)
Definition: Type.cpp:3666
GCCTypeClass::Bool
@ Bool
clang::FixedPointValueToString
void FixedPointValueToString(SmallVectorImpl< char > &Str, llvm::APSInt Val, unsigned Scale)
Definition: Type.cpp:4451
clang::ASTContext::getAdjustedType
QualType getAdjustedType(QualType Orig, QualType New) const
Return the uniqued reference to a type adjusted from the original type to a new type.
Definition: ASTContext.cpp:3311
clang::TemplateArgumentListInfo::arguments
llvm::ArrayRef< TemplateArgumentLoc > arguments() const
Definition: TemplateBase.h:591
clang::CXXRecordDecl
Represents a C++ struct/union/class.
Definition: DeclCXX.h:254
clang::CT_Can
@ CT_Can
Definition: ExceptionSpecificationType.h:57
clang::TemplateSpecializationType::getNumArgs
unsigned getNumArgs() const
Retrieve the number of template arguments.
Definition: Type.h:5322
clang::CXXRecordDecl::mayBeNonDynamicClass
bool mayBeNonDynamicClass() const
Definition: DeclCXX.h:574
clang::FunctionProtoType::hasInstantiationDependentExceptionSpec
bool hasInstantiationDependentExceptionSpec() const
Return whether this function has an instantiation-dependent exception spec.
Definition: Type.cpp:3328
clang::Type::getAsUnionType
const RecordType * getAsUnionType() const
NOTE: getAs*ArrayType are methods on ASTContext.
Definition: Type.cpp:660
clang::Type::isInterfaceType
bool isInterfaceType() const
Definition: Type.cpp:575
clang::Type::isUnionType
bool isUnionType() const
Definition: Type.cpp:595
clang::AdjustedType::getAdjustedType
QualType getAdjustedType() const
Definition: Type.h:2755
clang::Type::STK_CPointer
@ STK_CPointer
Definition: Type.h:2218
clang::ast_matchers::decl
const internal::VariadicAllOfMatcher< Decl > decl
Matches declarations.
Definition: ASTMatchersInternal.cpp:734
clang::EST_Uninstantiated