1 //===- ExprCXX.cpp - (C++) Expression AST Node Implementation -------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the subclesses of Expr class declared in ExprCXX.h
12 //===----------------------------------------------------------------------===//
14 #include "clang/AST/ExprCXX.h"
15 #include "clang/AST/ASTContext.h"
16 #include "clang/AST/Attr.h"
17 #include "clang/AST/Decl.h"
18 #include "clang/AST/DeclAccessPair.h"
19 #include "clang/AST/DeclBase.h"
20 #include "clang/AST/DeclCXX.h"
21 #include "clang/AST/DeclarationName.h"
22 #include "clang/AST/Expr.h"
23 #include "clang/AST/LambdaCapture.h"
24 #include "clang/AST/NestedNameSpecifier.h"
25 #include "clang/AST/TemplateBase.h"
26 #include "clang/AST/Type.h"
27 #include "clang/AST/TypeLoc.h"
28 #include "clang/Basic/LLVM.h"
29 #include "clang/Basic/OperatorKinds.h"
30 #include "clang/Basic/SourceLocation.h"
31 #include "clang/Basic/Specifiers.h"
32 #include "llvm/ADT/ArrayRef.h"
33 #include "llvm/Support/Casting.h"
34 #include "llvm/Support/ErrorHandling.h"
40 using namespace clang;
42 //===----------------------------------------------------------------------===//
43 // Child Iterators for iterating over subexpressions/substatements
44 //===----------------------------------------------------------------------===//
46 bool CXXOperatorCallExpr::isInfixBinaryOp() const {
47 // An infix binary operator is any operator with two arguments other than
48 // operator() and operator[]. Note that none of these operators can have
49 // default arguments, so it suffices to check the number of argument
51 if (getNumArgs() != 2)
54 switch (getOperator()) {
55 case OO_Call: case OO_Subscript:
62 bool CXXTypeidExpr::isPotentiallyEvaluated() const {
66 // C++11 [expr.typeid]p3:
67 // When typeid is applied to an expression other than a glvalue of
68 // polymorphic class type, [...] the expression is an unevaluated operand.
69 const Expr *E = getExprOperand();
70 if (const CXXRecordDecl *RD = E->getType()->getAsCXXRecordDecl())
71 if (RD->isPolymorphic() && E->isGLValue())
77 QualType CXXTypeidExpr::getTypeOperand(ASTContext &Context) const {
78 assert(isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)");
80 return Context.getUnqualifiedArrayType(
81 Operand.get<TypeSourceInfo *>()->getType().getNonReferenceType(), Quals);
84 QualType CXXUuidofExpr::getTypeOperand(ASTContext &Context) const {
85 assert(isTypeOperand() && "Cannot call getTypeOperand for __uuidof(expr)");
87 return Context.getUnqualifiedArrayType(
88 Operand.get<TypeSourceInfo *>()->getType().getNonReferenceType(), Quals);
91 // CXXScalarValueInitExpr
92 SourceLocation CXXScalarValueInitExpr::getBeginLoc() const {
93 return TypeInfo ? TypeInfo->getTypeLoc().getBeginLoc() : RParenLoc;
97 CXXNewExpr::CXXNewExpr(const ASTContext &C, bool globalNew,
98 FunctionDecl *operatorNew, FunctionDecl *operatorDelete,
99 bool PassAlignment, bool usualArrayDeleteWantsSize,
100 ArrayRef<Expr*> placementArgs,
101 SourceRange typeIdParens, Expr *arraySize,
102 InitializationStyle initializationStyle,
103 Expr *initializer, QualType ty,
104 TypeSourceInfo *allocatedTypeInfo,
105 SourceRange Range, SourceRange directInitRange)
106 : Expr(CXXNewExprClass, ty, VK_RValue, OK_Ordinary, ty->isDependentType(),
107 ty->isDependentType(), ty->isInstantiationDependentType(),
108 ty->containsUnexpandedParameterPack()),
109 OperatorNew(operatorNew), OperatorDelete(operatorDelete),
110 AllocatedTypeInfo(allocatedTypeInfo), TypeIdParens(typeIdParens),
111 Range(Range), DirectInitRange(directInitRange), GlobalNew(globalNew),
112 PassAlignment(PassAlignment),
113 UsualArrayDeleteWantsSize(usualArrayDeleteWantsSize) {
114 assert((initializer != nullptr || initializationStyle == NoInit) &&
115 "Only NoInit can have no initializer.");
116 StoredInitializationStyle = initializer ? initializationStyle + 1 : 0;
117 AllocateArgsArray(C, arraySize != nullptr, placementArgs.size(),
118 initializer != nullptr);
121 if (arraySize->isInstantiationDependent())
122 ExprBits.InstantiationDependent = true;
124 if (arraySize->containsUnexpandedParameterPack())
125 ExprBits.ContainsUnexpandedParameterPack = true;
127 SubExprs[i++] = arraySize;
131 if (initializer->isInstantiationDependent())
132 ExprBits.InstantiationDependent = true;
134 if (initializer->containsUnexpandedParameterPack())
135 ExprBits.ContainsUnexpandedParameterPack = true;
137 SubExprs[i++] = initializer;
140 for (unsigned j = 0; j != placementArgs.size(); ++j) {
141 if (placementArgs[j]->isInstantiationDependent())
142 ExprBits.InstantiationDependent = true;
143 if (placementArgs[j]->containsUnexpandedParameterPack())
144 ExprBits.ContainsUnexpandedParameterPack = true;
146 SubExprs[i++] = placementArgs[j];
149 switch (getInitializationStyle()) {
151 this->Range.setEnd(DirectInitRange.getEnd()); break;
153 this->Range.setEnd(getInitializer()->getSourceRange().getEnd()); break;
155 if (TypeIdParens.isValid())
156 this->Range.setEnd(TypeIdParens.getEnd());
161 void CXXNewExpr::AllocateArgsArray(const ASTContext &C, bool isArray,
162 unsigned numPlaceArgs, bool hasInitializer){
163 assert(SubExprs == nullptr && "SubExprs already allocated");
165 NumPlacementArgs = numPlaceArgs;
167 unsigned TotalSize = Array + hasInitializer + NumPlacementArgs;
168 SubExprs = new (C) Stmt*[TotalSize];
171 bool CXXNewExpr::shouldNullCheckAllocation(const ASTContext &Ctx) const {
172 return getOperatorNew()->getType()->castAs<FunctionProtoType>()
174 !getOperatorNew()->isReservedGlobalPlacementOperator();
178 QualType CXXDeleteExpr::getDestroyedType() const {
179 const Expr *Arg = getArgument();
181 // For a destroying operator delete, we may have implicitly converted the
182 // pointer type to the type of the parameter of the 'operator delete'
184 while (const auto *ICE = dyn_cast<ImplicitCastExpr>(Arg)) {
185 if (ICE->getCastKind() == CK_DerivedToBase ||
186 ICE->getCastKind() == CK_UncheckedDerivedToBase ||
187 ICE->getCastKind() == CK_NoOp) {
188 assert((ICE->getCastKind() == CK_NoOp ||
189 getOperatorDelete()->isDestroyingOperatorDelete()) &&
190 "only a destroying operator delete can have a converted arg");
191 Arg = ICE->getSubExpr();
196 // The type-to-delete may not be a pointer if it's a dependent type.
197 const QualType ArgType = Arg->getType();
199 if (ArgType->isDependentType() && !ArgType->isPointerType())
202 return ArgType->getAs<PointerType>()->getPointeeType();
205 // CXXPseudoDestructorExpr
206 PseudoDestructorTypeStorage::PseudoDestructorTypeStorage(TypeSourceInfo *Info)
208 Location = Info->getTypeLoc().getLocalSourceRange().getBegin();
211 CXXPseudoDestructorExpr::CXXPseudoDestructorExpr(const ASTContext &Context,
212 Expr *Base, bool isArrow, SourceLocation OperatorLoc,
213 NestedNameSpecifierLoc QualifierLoc, TypeSourceInfo *ScopeType,
214 SourceLocation ColonColonLoc, SourceLocation TildeLoc,
215 PseudoDestructorTypeStorage DestroyedType)
216 : Expr(CXXPseudoDestructorExprClass,
217 Context.BoundMemberTy,
218 VK_RValue, OK_Ordinary,
219 /*isTypeDependent=*/(Base->isTypeDependent() ||
220 (DestroyedType.getTypeSourceInfo() &&
221 DestroyedType.getTypeSourceInfo()->getType()->isDependentType())),
222 /*isValueDependent=*/Base->isValueDependent(),
223 (Base->isInstantiationDependent() ||
225 QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent()) ||
227 ScopeType->getType()->isInstantiationDependentType()) ||
228 (DestroyedType.getTypeSourceInfo() &&
229 DestroyedType.getTypeSourceInfo()->getType()
230 ->isInstantiationDependentType())),
231 // ContainsUnexpandedParameterPack
232 (Base->containsUnexpandedParameterPack() ||
234 QualifierLoc.getNestedNameSpecifier()
235 ->containsUnexpandedParameterPack()) ||
237 ScopeType->getType()->containsUnexpandedParameterPack()) ||
238 (DestroyedType.getTypeSourceInfo() &&
239 DestroyedType.getTypeSourceInfo()->getType()
240 ->containsUnexpandedParameterPack()))),
241 Base(static_cast<Stmt *>(Base)), IsArrow(isArrow),
242 OperatorLoc(OperatorLoc), QualifierLoc(QualifierLoc),
243 ScopeType(ScopeType), ColonColonLoc(ColonColonLoc), TildeLoc(TildeLoc),
244 DestroyedType(DestroyedType) {}
246 QualType CXXPseudoDestructorExpr::getDestroyedType() const {
247 if (TypeSourceInfo *TInfo = DestroyedType.getTypeSourceInfo())
248 return TInfo->getType();
253 SourceLocation CXXPseudoDestructorExpr::getEndLoc() const {
254 SourceLocation End = DestroyedType.getLocation();
255 if (TypeSourceInfo *TInfo = DestroyedType.getTypeSourceInfo())
256 End = TInfo->getTypeLoc().getLocalSourceRange().getEnd();
260 // UnresolvedLookupExpr
261 UnresolvedLookupExpr *
262 UnresolvedLookupExpr::Create(const ASTContext &C,
263 CXXRecordDecl *NamingClass,
264 NestedNameSpecifierLoc QualifierLoc,
265 SourceLocation TemplateKWLoc,
266 const DeclarationNameInfo &NameInfo,
268 const TemplateArgumentListInfo *Args,
269 UnresolvedSetIterator Begin,
270 UnresolvedSetIterator End) {
271 assert(Args || TemplateKWLoc.isValid());
272 unsigned num_args = Args ? Args->size() : 0;
275 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(1,
277 void *Mem = C.Allocate(Size, alignof(UnresolvedLookupExpr));
278 return new (Mem) UnresolvedLookupExpr(C, NamingClass, QualifierLoc,
279 TemplateKWLoc, NameInfo,
280 ADL, /*Overload*/ true, Args,
284 UnresolvedLookupExpr *
285 UnresolvedLookupExpr::CreateEmpty(const ASTContext &C,
286 bool HasTemplateKWAndArgsInfo,
287 unsigned NumTemplateArgs) {
288 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo);
290 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
291 HasTemplateKWAndArgsInfo, NumTemplateArgs);
292 void *Mem = C.Allocate(Size, alignof(UnresolvedLookupExpr));
293 auto *E = new (Mem) UnresolvedLookupExpr(EmptyShell());
294 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
298 OverloadExpr::OverloadExpr(StmtClass K, const ASTContext &C,
299 NestedNameSpecifierLoc QualifierLoc,
300 SourceLocation TemplateKWLoc,
301 const DeclarationNameInfo &NameInfo,
302 const TemplateArgumentListInfo *TemplateArgs,
303 UnresolvedSetIterator Begin,
304 UnresolvedSetIterator End,
306 bool KnownInstantiationDependent,
307 bool KnownContainsUnexpandedParameterPack)
308 : Expr(K, C.OverloadTy, VK_LValue, OK_Ordinary, KnownDependent,
310 (KnownInstantiationDependent ||
311 NameInfo.isInstantiationDependent() ||
313 QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent())),
314 (KnownContainsUnexpandedParameterPack ||
315 NameInfo.containsUnexpandedParameterPack() ||
317 QualifierLoc.getNestedNameSpecifier()
318 ->containsUnexpandedParameterPack()))),
319 NameInfo(NameInfo), QualifierLoc(QualifierLoc), NumResults(End - Begin),
320 HasTemplateKWAndArgsInfo(TemplateArgs != nullptr ||
321 TemplateKWLoc.isValid()) {
322 NumResults = End - Begin;
324 // Determine whether this expression is type-dependent.
325 for (UnresolvedSetImpl::const_iterator I = Begin; I != End; ++I) {
326 if ((*I)->getDeclContext()->isDependentContext() ||
327 isa<UnresolvedUsingValueDecl>(*I)) {
328 ExprBits.TypeDependent = true;
329 ExprBits.ValueDependent = true;
330 ExprBits.InstantiationDependent = true;
334 Results = static_cast<DeclAccessPair *>(C.Allocate(
335 sizeof(DeclAccessPair) * NumResults, alignof(DeclAccessPair)));
336 memcpy(Results, Begin.I, NumResults * sizeof(DeclAccessPair));
339 // If we have explicit template arguments, check for dependent
340 // template arguments and whether they contain any unexpanded pack
343 bool Dependent = false;
344 bool InstantiationDependent = false;
345 bool ContainsUnexpandedParameterPack = false;
346 getTrailingASTTemplateKWAndArgsInfo()->initializeFrom(
347 TemplateKWLoc, *TemplateArgs, getTrailingTemplateArgumentLoc(),
348 Dependent, InstantiationDependent, ContainsUnexpandedParameterPack);
351 ExprBits.TypeDependent = true;
352 ExprBits.ValueDependent = true;
354 if (InstantiationDependent)
355 ExprBits.InstantiationDependent = true;
356 if (ContainsUnexpandedParameterPack)
357 ExprBits.ContainsUnexpandedParameterPack = true;
358 } else if (TemplateKWLoc.isValid()) {
359 getTrailingASTTemplateKWAndArgsInfo()->initializeFrom(TemplateKWLoc);
362 if (isTypeDependent())
363 setType(C.DependentTy);
366 void OverloadExpr::initializeResults(const ASTContext &C,
367 UnresolvedSetIterator Begin,
368 UnresolvedSetIterator End) {
369 assert(!Results && "Results already initialized!");
370 NumResults = End - Begin;
372 Results = static_cast<DeclAccessPair *>(
373 C.Allocate(sizeof(DeclAccessPair) * NumResults,
375 alignof(DeclAccessPair)));
376 memcpy(Results, Begin.I, NumResults * sizeof(DeclAccessPair));
380 CXXRecordDecl *OverloadExpr::getNamingClass() const {
381 if (isa<UnresolvedLookupExpr>(this))
382 return cast<UnresolvedLookupExpr>(this)->getNamingClass();
384 return cast<UnresolvedMemberExpr>(this)->getNamingClass();
387 // DependentScopeDeclRefExpr
388 DependentScopeDeclRefExpr::DependentScopeDeclRefExpr(QualType T,
389 NestedNameSpecifierLoc QualifierLoc,
390 SourceLocation TemplateKWLoc,
391 const DeclarationNameInfo &NameInfo,
392 const TemplateArgumentListInfo *Args)
393 : Expr(DependentScopeDeclRefExprClass, T, VK_LValue, OK_Ordinary,
395 (NameInfo.isInstantiationDependent() ||
397 QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent())),
398 (NameInfo.containsUnexpandedParameterPack() ||
400 QualifierLoc.getNestedNameSpecifier()
401 ->containsUnexpandedParameterPack()))),
402 QualifierLoc(QualifierLoc), NameInfo(NameInfo),
403 HasTemplateKWAndArgsInfo(Args != nullptr || TemplateKWLoc.isValid())
406 bool Dependent = true;
407 bool InstantiationDependent = true;
408 bool ContainsUnexpandedParameterPack
409 = ExprBits.ContainsUnexpandedParameterPack;
410 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
411 TemplateKWLoc, *Args, getTrailingObjects<TemplateArgumentLoc>(),
412 Dependent, InstantiationDependent, ContainsUnexpandedParameterPack);
413 ExprBits.ContainsUnexpandedParameterPack = ContainsUnexpandedParameterPack;
414 } else if (TemplateKWLoc.isValid()) {
415 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
420 DependentScopeDeclRefExpr *
421 DependentScopeDeclRefExpr::Create(const ASTContext &C,
422 NestedNameSpecifierLoc QualifierLoc,
423 SourceLocation TemplateKWLoc,
424 const DeclarationNameInfo &NameInfo,
425 const TemplateArgumentListInfo *Args) {
426 assert(QualifierLoc && "should be created for dependent qualifiers");
427 bool HasTemplateKWAndArgsInfo = Args || TemplateKWLoc.isValid();
429 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
430 HasTemplateKWAndArgsInfo, Args ? Args->size() : 0);
431 void *Mem = C.Allocate(Size);
432 return new (Mem) DependentScopeDeclRefExpr(C.DependentTy, QualifierLoc,
433 TemplateKWLoc, NameInfo, Args);
436 DependentScopeDeclRefExpr *
437 DependentScopeDeclRefExpr::CreateEmpty(const ASTContext &C,
438 bool HasTemplateKWAndArgsInfo,
439 unsigned NumTemplateArgs) {
440 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo);
442 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
443 HasTemplateKWAndArgsInfo, NumTemplateArgs);
444 void *Mem = C.Allocate(Size);
446 new (Mem) DependentScopeDeclRefExpr(QualType(), NestedNameSpecifierLoc(),
448 DeclarationNameInfo(), nullptr);
449 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
453 SourceLocation CXXConstructExpr::getBeginLoc() const {
454 if (isa<CXXTemporaryObjectExpr>(this))
455 return cast<CXXTemporaryObjectExpr>(this)->getLocStart();
459 SourceLocation CXXConstructExpr::getEndLoc() const {
460 if (isa<CXXTemporaryObjectExpr>(this))
461 return cast<CXXTemporaryObjectExpr>(this)->getLocEnd();
463 if (ParenOrBraceRange.isValid())
464 return ParenOrBraceRange.getEnd();
466 SourceLocation End = Loc;
467 for (unsigned I = getNumArgs(); I > 0; --I) {
468 const Expr *Arg = getArg(I-1);
469 if (!Arg->isDefaultArgument()) {
470 SourceLocation NewEnd = Arg->getLocEnd();
471 if (NewEnd.isValid()) {
481 SourceRange CXXOperatorCallExpr::getSourceRangeImpl() const {
482 OverloadedOperatorKind Kind = getOperator();
483 if (Kind == OO_PlusPlus || Kind == OO_MinusMinus) {
484 if (getNumArgs() == 1)
486 return SourceRange(getOperatorLoc(), getArg(0)->getLocEnd());
489 return SourceRange(getArg(0)->getLocStart(), getOperatorLoc());
490 } else if (Kind == OO_Arrow) {
491 return getArg(0)->getSourceRange();
492 } else if (Kind == OO_Call) {
493 return SourceRange(getArg(0)->getLocStart(), getRParenLoc());
494 } else if (Kind == OO_Subscript) {
495 return SourceRange(getArg(0)->getLocStart(), getRParenLoc());
496 } else if (getNumArgs() == 1) {
497 return SourceRange(getOperatorLoc(), getArg(0)->getLocEnd());
498 } else if (getNumArgs() == 2) {
499 return SourceRange(getArg(0)->getLocStart(), getArg(1)->getLocEnd());
501 return getOperatorLoc();
505 Expr *CXXMemberCallExpr::getImplicitObjectArgument() const {
506 const Expr *Callee = getCallee()->IgnoreParens();
507 if (const auto *MemExpr = dyn_cast<MemberExpr>(Callee))
508 return MemExpr->getBase();
509 if (const auto *BO = dyn_cast<BinaryOperator>(Callee))
510 if (BO->getOpcode() == BO_PtrMemD || BO->getOpcode() == BO_PtrMemI)
513 // FIXME: Will eventually need to cope with member pointers.
517 CXXMethodDecl *CXXMemberCallExpr::getMethodDecl() const {
518 if (const auto *MemExpr = dyn_cast<MemberExpr>(getCallee()->IgnoreParens()))
519 return cast<CXXMethodDecl>(MemExpr->getMemberDecl());
521 // FIXME: Will eventually need to cope with member pointers.
525 CXXRecordDecl *CXXMemberCallExpr::getRecordDecl() const {
526 Expr* ThisArg = getImplicitObjectArgument();
530 if (ThisArg->getType()->isAnyPointerType())
531 return ThisArg->getType()->getPointeeType()->getAsCXXRecordDecl();
533 return ThisArg->getType()->getAsCXXRecordDecl();
536 //===----------------------------------------------------------------------===//
538 //===----------------------------------------------------------------------===//
540 /// getCastName - Get the name of the C++ cast being used, e.g.,
541 /// "static_cast", "dynamic_cast", "reinterpret_cast", or
542 /// "const_cast". The returned pointer must not be freed.
543 const char *CXXNamedCastExpr::getCastName() const {
544 switch (getStmtClass()) {
545 case CXXStaticCastExprClass: return "static_cast";
546 case CXXDynamicCastExprClass: return "dynamic_cast";
547 case CXXReinterpretCastExprClass: return "reinterpret_cast";
548 case CXXConstCastExprClass: return "const_cast";
549 default: return "<invalid cast>";
553 CXXStaticCastExpr *CXXStaticCastExpr::Create(const ASTContext &C, QualType T,
555 CastKind K, Expr *Op,
556 const CXXCastPath *BasePath,
557 TypeSourceInfo *WrittenTy,
559 SourceLocation RParenLoc,
560 SourceRange AngleBrackets) {
561 unsigned PathSize = (BasePath ? BasePath->size() : 0);
563 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
564 PathSize ? 1 : 0, PathSize));
566 new (Buffer) CXXStaticCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
567 RParenLoc, AngleBrackets);
569 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
570 E->getTrailingObjects<CXXBaseSpecifier *>());
574 CXXStaticCastExpr *CXXStaticCastExpr::CreateEmpty(const ASTContext &C,
577 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
578 PathSize ? 1 : 0, PathSize));
579 return new (Buffer) CXXStaticCastExpr(EmptyShell(), PathSize);
582 CXXDynamicCastExpr *CXXDynamicCastExpr::Create(const ASTContext &C, QualType T,
584 CastKind K, Expr *Op,
585 const CXXCastPath *BasePath,
586 TypeSourceInfo *WrittenTy,
588 SourceLocation RParenLoc,
589 SourceRange AngleBrackets) {
590 unsigned PathSize = (BasePath ? BasePath->size() : 0);
592 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
593 PathSize ? 1 : 0, PathSize));
595 new (Buffer) CXXDynamicCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
596 RParenLoc, AngleBrackets);
598 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
599 E->getTrailingObjects<CXXBaseSpecifier *>());
603 CXXDynamicCastExpr *CXXDynamicCastExpr::CreateEmpty(const ASTContext &C,
606 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
607 PathSize ? 1 : 0, PathSize));
608 return new (Buffer) CXXDynamicCastExpr(EmptyShell(), PathSize);
611 /// isAlwaysNull - Return whether the result of the dynamic_cast is proven
612 /// to always be null. For example:
615 /// struct B final : A { };
618 /// C *f(B* b) { return dynamic_cast<C*>(b); }
619 bool CXXDynamicCastExpr::isAlwaysNull() const
621 QualType SrcType = getSubExpr()->getType();
622 QualType DestType = getType();
624 if (const auto *SrcPTy = SrcType->getAs<PointerType>()) {
625 SrcType = SrcPTy->getPointeeType();
626 DestType = DestType->castAs<PointerType>()->getPointeeType();
629 if (DestType->isVoidType())
633 cast<CXXRecordDecl>(SrcType->castAs<RecordType>()->getDecl());
635 if (!SrcRD->hasAttr<FinalAttr>())
639 cast<CXXRecordDecl>(DestType->castAs<RecordType>()->getDecl());
641 return !DestRD->isDerivedFrom(SrcRD);
644 CXXReinterpretCastExpr *
645 CXXReinterpretCastExpr::Create(const ASTContext &C, QualType T,
646 ExprValueKind VK, CastKind K, Expr *Op,
647 const CXXCastPath *BasePath,
648 TypeSourceInfo *WrittenTy, SourceLocation L,
649 SourceLocation RParenLoc,
650 SourceRange AngleBrackets) {
651 unsigned PathSize = (BasePath ? BasePath->size() : 0);
653 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
654 PathSize ? 1 : 0, PathSize));
656 new (Buffer) CXXReinterpretCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
657 RParenLoc, AngleBrackets);
659 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
660 E->getTrailingObjects<CXXBaseSpecifier *>());
664 CXXReinterpretCastExpr *
665 CXXReinterpretCastExpr::CreateEmpty(const ASTContext &C, unsigned PathSize) {
667 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
668 PathSize ? 1 : 0, PathSize));
669 return new (Buffer) CXXReinterpretCastExpr(EmptyShell(), PathSize);
672 CXXConstCastExpr *CXXConstCastExpr::Create(const ASTContext &C, QualType T,
673 ExprValueKind VK, Expr *Op,
674 TypeSourceInfo *WrittenTy,
676 SourceLocation RParenLoc,
677 SourceRange AngleBrackets) {
678 return new (C) CXXConstCastExpr(T, VK, Op, WrittenTy, L, RParenLoc, AngleBrackets);
681 CXXConstCastExpr *CXXConstCastExpr::CreateEmpty(const ASTContext &C) {
682 return new (C) CXXConstCastExpr(EmptyShell());
685 CXXFunctionalCastExpr *
686 CXXFunctionalCastExpr::Create(const ASTContext &C, QualType T, ExprValueKind VK,
687 TypeSourceInfo *Written, CastKind K, Expr *Op,
688 const CXXCastPath *BasePath,
689 SourceLocation L, SourceLocation R) {
690 unsigned PathSize = (BasePath ? BasePath->size() : 0);
692 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
693 PathSize ? 1 : 0, PathSize));
695 new (Buffer) CXXFunctionalCastExpr(T, VK, Written, K, Op, PathSize, L, R);
697 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
698 E->getTrailingObjects<CXXBaseSpecifier *>());
702 CXXFunctionalCastExpr *
703 CXXFunctionalCastExpr::CreateEmpty(const ASTContext &C, unsigned PathSize) {
705 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
706 PathSize ? 1 : 0, PathSize));
707 return new (Buffer) CXXFunctionalCastExpr(EmptyShell(), PathSize);
710 SourceLocation CXXFunctionalCastExpr::getBeginLoc() const {
711 return getTypeInfoAsWritten()->getTypeLoc().getLocStart();
714 SourceLocation CXXFunctionalCastExpr::getEndLoc() const {
715 return RParenLoc.isValid() ? RParenLoc : getSubExpr()->getLocEnd();
718 UserDefinedLiteral::LiteralOperatorKind
719 UserDefinedLiteral::getLiteralOperatorKind() const {
720 if (getNumArgs() == 0)
722 if (getNumArgs() == 2)
725 assert(getNumArgs() == 1 && "unexpected #args in literal operator call");
727 cast<FunctionDecl>(getCalleeDecl())->getParamDecl(0)->getType();
728 if (ParamTy->isPointerType())
730 if (ParamTy->isAnyCharacterType())
731 return LOK_Character;
732 if (ParamTy->isIntegerType())
734 if (ParamTy->isFloatingType())
737 llvm_unreachable("unknown kind of literal operator");
740 Expr *UserDefinedLiteral::getCookedLiteral() {
742 LiteralOperatorKind LOK = getLiteralOperatorKind();
743 assert(LOK != LOK_Template && LOK != LOK_Raw && "not a cooked literal");
748 const IdentifierInfo *UserDefinedLiteral::getUDSuffix() const {
749 return cast<FunctionDecl>(getCalleeDecl())->getLiteralIdentifier();
752 CXXDefaultInitExpr::CXXDefaultInitExpr(const ASTContext &C, SourceLocation Loc,
753 FieldDecl *Field, QualType T)
754 : Expr(CXXDefaultInitExprClass, T.getNonLValueExprType(C),
755 T->isLValueReferenceType() ? VK_LValue : T->isRValueReferenceType()
758 /*FIXME*/ OK_Ordinary, false, false, false, false),
759 Field(Field), Loc(Loc) {
760 assert(Field->hasInClassInitializer());
763 CXXTemporary *CXXTemporary::Create(const ASTContext &C,
764 const CXXDestructorDecl *Destructor) {
765 return new (C) CXXTemporary(Destructor);
768 CXXBindTemporaryExpr *CXXBindTemporaryExpr::Create(const ASTContext &C,
771 assert((SubExpr->getType()->isRecordType() ||
772 SubExpr->getType()->isArrayType()) &&
773 "Expression bound to a temporary must have record or array type!");
775 return new (C) CXXBindTemporaryExpr(Temp, SubExpr);
778 CXXTemporaryObjectExpr::CXXTemporaryObjectExpr(const ASTContext &C,
779 CXXConstructorDecl *Cons,
782 ArrayRef<Expr*> Args,
783 SourceRange ParenOrBraceRange,
784 bool HadMultipleCandidates,
785 bool ListInitialization,
786 bool StdInitListInitialization,
787 bool ZeroInitialization)
788 : CXXConstructExpr(C, CXXTemporaryObjectExprClass, Type,
789 TSI->getTypeLoc().getBeginLoc(), Cons, false, Args,
790 HadMultipleCandidates, ListInitialization,
791 StdInitListInitialization, ZeroInitialization,
792 CXXConstructExpr::CK_Complete, ParenOrBraceRange),
795 SourceLocation CXXTemporaryObjectExpr::getBeginLoc() const {
796 return Type->getTypeLoc().getBeginLoc();
799 SourceLocation CXXTemporaryObjectExpr::getEndLoc() const {
800 SourceLocation Loc = getParenOrBraceRange().getEnd();
801 if (Loc.isInvalid() && getNumArgs())
802 Loc = getArg(getNumArgs()-1)->getLocEnd();
806 CXXConstructExpr *CXXConstructExpr::Create(const ASTContext &C, QualType T,
808 CXXConstructorDecl *Ctor,
810 ArrayRef<Expr*> Args,
811 bool HadMultipleCandidates,
812 bool ListInitialization,
813 bool StdInitListInitialization,
814 bool ZeroInitialization,
815 ConstructionKind ConstructKind,
816 SourceRange ParenOrBraceRange) {
817 return new (C) CXXConstructExpr(C, CXXConstructExprClass, T, Loc,
818 Ctor, Elidable, Args,
819 HadMultipleCandidates, ListInitialization,
820 StdInitListInitialization,
821 ZeroInitialization, ConstructKind,
825 CXXConstructExpr::CXXConstructExpr(const ASTContext &C, StmtClass SC,
826 QualType T, SourceLocation Loc,
827 CXXConstructorDecl *Ctor,
829 ArrayRef<Expr*> Args,
830 bool HadMultipleCandidates,
831 bool ListInitialization,
832 bool StdInitListInitialization,
833 bool ZeroInitialization,
834 ConstructionKind ConstructKind,
835 SourceRange ParenOrBraceRange)
836 : Expr(SC, T, VK_RValue, OK_Ordinary,
837 T->isDependentType(), T->isDependentType(),
838 T->isInstantiationDependentType(),
839 T->containsUnexpandedParameterPack()),
840 Constructor(Ctor), Loc(Loc), ParenOrBraceRange(ParenOrBraceRange),
841 NumArgs(Args.size()), Elidable(Elidable),
842 HadMultipleCandidates(HadMultipleCandidates),
843 ListInitialization(ListInitialization),
844 StdInitListInitialization(StdInitListInitialization),
845 ZeroInitialization(ZeroInitialization), ConstructKind(ConstructKind) {
847 this->Args = new (C) Stmt*[Args.size()];
849 for (unsigned i = 0; i != Args.size(); ++i) {
850 assert(Args[i] && "NULL argument in CXXConstructExpr");
852 if (Args[i]->isValueDependent())
853 ExprBits.ValueDependent = true;
854 if (Args[i]->isInstantiationDependent())
855 ExprBits.InstantiationDependent = true;
856 if (Args[i]->containsUnexpandedParameterPack())
857 ExprBits.ContainsUnexpandedParameterPack = true;
859 this->Args[i] = Args[i];
864 LambdaCapture::LambdaCapture(SourceLocation Loc, bool Implicit,
865 LambdaCaptureKind Kind, VarDecl *Var,
866 SourceLocation EllipsisLoc)
867 : DeclAndBits(Var, 0), Loc(Loc), EllipsisLoc(EllipsisLoc) {
870 Bits |= Capture_Implicit;
874 Bits |= Capture_ByCopy;
877 assert(!Var && "'this' capture cannot have a variable!");
878 Bits |= Capture_This;
882 Bits |= Capture_ByCopy;
885 assert(Var && "capture must have a variable!");
888 assert(!Var && "VLA type capture cannot have a variable!");
891 DeclAndBits.setInt(Bits);
894 LambdaCaptureKind LambdaCapture::getCaptureKind() const {
895 if (capturesVLAType())
897 bool CapByCopy = DeclAndBits.getInt() & Capture_ByCopy;
899 return CapByCopy ? LCK_StarThis : LCK_This;
900 return CapByCopy ? LCK_ByCopy : LCK_ByRef;
903 LambdaExpr::LambdaExpr(QualType T, SourceRange IntroducerRange,
904 LambdaCaptureDefault CaptureDefault,
905 SourceLocation CaptureDefaultLoc,
906 ArrayRef<LambdaCapture> Captures, bool ExplicitParams,
907 bool ExplicitResultType, ArrayRef<Expr *> CaptureInits,
908 SourceLocation ClosingBrace,
909 bool ContainsUnexpandedParameterPack)
910 : Expr(LambdaExprClass, T, VK_RValue, OK_Ordinary, T->isDependentType(),
911 T->isDependentType(), T->isDependentType(),
912 ContainsUnexpandedParameterPack),
913 IntroducerRange(IntroducerRange), CaptureDefaultLoc(CaptureDefaultLoc),
914 NumCaptures(Captures.size()), CaptureDefault(CaptureDefault),
915 ExplicitParams(ExplicitParams), ExplicitResultType(ExplicitResultType),
916 ClosingBrace(ClosingBrace) {
917 assert(CaptureInits.size() == Captures.size() && "Wrong number of arguments");
918 CXXRecordDecl *Class = getLambdaClass();
919 CXXRecordDecl::LambdaDefinitionData &Data = Class->getLambdaData();
921 // FIXME: Propagate "has unexpanded parameter pack" bit.
924 const ASTContext &Context = Class->getASTContext();
925 Data.NumCaptures = NumCaptures;
926 Data.NumExplicitCaptures = 0;
928 (LambdaCapture *)Context.Allocate(sizeof(LambdaCapture) * NumCaptures);
929 LambdaCapture *ToCapture = Data.Captures;
930 for (unsigned I = 0, N = Captures.size(); I != N; ++I) {
931 if (Captures[I].isExplicit())
932 ++Data.NumExplicitCaptures;
934 *ToCapture++ = Captures[I];
937 // Copy initialization expressions for the non-static data members.
938 Stmt **Stored = getStoredStmts();
939 for (unsigned I = 0, N = CaptureInits.size(); I != N; ++I)
940 *Stored++ = CaptureInits[I];
942 // Copy the body of the lambda.
943 *Stored++ = getCallOperator()->getBody();
946 LambdaExpr *LambdaExpr::Create(
947 const ASTContext &Context, CXXRecordDecl *Class,
948 SourceRange IntroducerRange, LambdaCaptureDefault CaptureDefault,
949 SourceLocation CaptureDefaultLoc, ArrayRef<LambdaCapture> Captures,
950 bool ExplicitParams, bool ExplicitResultType, ArrayRef<Expr *> CaptureInits,
951 SourceLocation ClosingBrace, bool ContainsUnexpandedParameterPack) {
952 // Determine the type of the expression (i.e., the type of the
953 // function object we're creating).
954 QualType T = Context.getTypeDeclType(Class);
956 unsigned Size = totalSizeToAlloc<Stmt *>(Captures.size() + 1);
957 void *Mem = Context.Allocate(Size);
959 LambdaExpr(T, IntroducerRange, CaptureDefault, CaptureDefaultLoc,
960 Captures, ExplicitParams, ExplicitResultType, CaptureInits,
961 ClosingBrace, ContainsUnexpandedParameterPack);
964 LambdaExpr *LambdaExpr::CreateDeserialized(const ASTContext &C,
965 unsigned NumCaptures) {
966 unsigned Size = totalSizeToAlloc<Stmt *>(NumCaptures + 1);
967 void *Mem = C.Allocate(Size);
968 return new (Mem) LambdaExpr(EmptyShell(), NumCaptures);
971 bool LambdaExpr::isInitCapture(const LambdaCapture *C) const {
972 return (C->capturesVariable() && C->getCapturedVar()->isInitCapture() &&
973 (getCallOperator() == C->getCapturedVar()->getDeclContext()));
976 LambdaExpr::capture_iterator LambdaExpr::capture_begin() const {
977 return getLambdaClass()->getLambdaData().Captures;
980 LambdaExpr::capture_iterator LambdaExpr::capture_end() const {
981 return capture_begin() + NumCaptures;
984 LambdaExpr::capture_range LambdaExpr::captures() const {
985 return capture_range(capture_begin(), capture_end());
988 LambdaExpr::capture_iterator LambdaExpr::explicit_capture_begin() const {
989 return capture_begin();
992 LambdaExpr::capture_iterator LambdaExpr::explicit_capture_end() const {
993 struct CXXRecordDecl::LambdaDefinitionData &Data
994 = getLambdaClass()->getLambdaData();
995 return Data.Captures + Data.NumExplicitCaptures;
998 LambdaExpr::capture_range LambdaExpr::explicit_captures() const {
999 return capture_range(explicit_capture_begin(), explicit_capture_end());
1002 LambdaExpr::capture_iterator LambdaExpr::implicit_capture_begin() const {
1003 return explicit_capture_end();
1006 LambdaExpr::capture_iterator LambdaExpr::implicit_capture_end() const {
1007 return capture_end();
1010 LambdaExpr::capture_range LambdaExpr::implicit_captures() const {
1011 return capture_range(implicit_capture_begin(), implicit_capture_end());
1014 CXXRecordDecl *LambdaExpr::getLambdaClass() const {
1015 return getType()->getAsCXXRecordDecl();
1018 CXXMethodDecl *LambdaExpr::getCallOperator() const {
1019 CXXRecordDecl *Record = getLambdaClass();
1020 return Record->getLambdaCallOperator();
1023 TemplateParameterList *LambdaExpr::getTemplateParameterList() const {
1024 CXXRecordDecl *Record = getLambdaClass();
1025 return Record->getGenericLambdaTemplateParameterList();
1029 CompoundStmt *LambdaExpr::getBody() const {
1030 // FIXME: this mutation in getBody is bogus. It should be
1031 // initialized in ASTStmtReader::VisitLambdaExpr, but for reasons I
1032 // don't understand, that doesn't work.
1033 if (!getStoredStmts()[NumCaptures])
1034 *const_cast<Stmt **>(&getStoredStmts()[NumCaptures]) =
1035 getCallOperator()->getBody();
1037 return static_cast<CompoundStmt *>(getStoredStmts()[NumCaptures]);
1040 bool LambdaExpr::isMutable() const {
1041 return !getCallOperator()->isConst();
1044 ExprWithCleanups::ExprWithCleanups(Expr *subexpr,
1045 bool CleanupsHaveSideEffects,
1046 ArrayRef<CleanupObject> objects)
1047 : Expr(ExprWithCleanupsClass, subexpr->getType(),
1048 subexpr->getValueKind(), subexpr->getObjectKind(),
1049 subexpr->isTypeDependent(), subexpr->isValueDependent(),
1050 subexpr->isInstantiationDependent(),
1051 subexpr->containsUnexpandedParameterPack()),
1053 ExprWithCleanupsBits.CleanupsHaveSideEffects = CleanupsHaveSideEffects;
1054 ExprWithCleanupsBits.NumObjects = objects.size();
1055 for (unsigned i = 0, e = objects.size(); i != e; ++i)
1056 getTrailingObjects<CleanupObject>()[i] = objects[i];
1059 ExprWithCleanups *ExprWithCleanups::Create(const ASTContext &C, Expr *subexpr,
1060 bool CleanupsHaveSideEffects,
1061 ArrayRef<CleanupObject> objects) {
1062 void *buffer = C.Allocate(totalSizeToAlloc<CleanupObject>(objects.size()),
1063 alignof(ExprWithCleanups));
1065 ExprWithCleanups(subexpr, CleanupsHaveSideEffects, objects);
1068 ExprWithCleanups::ExprWithCleanups(EmptyShell empty, unsigned numObjects)
1069 : Expr(ExprWithCleanupsClass, empty) {
1070 ExprWithCleanupsBits.NumObjects = numObjects;
1073 ExprWithCleanups *ExprWithCleanups::Create(const ASTContext &C,
1075 unsigned numObjects) {
1076 void *buffer = C.Allocate(totalSizeToAlloc<CleanupObject>(numObjects),
1077 alignof(ExprWithCleanups));
1078 return new (buffer) ExprWithCleanups(empty, numObjects);
1081 CXXUnresolvedConstructExpr::CXXUnresolvedConstructExpr(TypeSourceInfo *Type,
1082 SourceLocation LParenLoc,
1083 ArrayRef<Expr*> Args,
1084 SourceLocation RParenLoc)
1085 : Expr(CXXUnresolvedConstructExprClass,
1086 Type->getType().getNonReferenceType(),
1087 (Type->getType()->isLValueReferenceType()
1089 : Type->getType()->isRValueReferenceType() ? VK_XValue
1092 Type->getType()->isDependentType() ||
1093 Type->getType()->getContainedDeducedType(),
1094 true, true, Type->getType()->containsUnexpandedParameterPack()),
1095 Type(Type), LParenLoc(LParenLoc), RParenLoc(RParenLoc),
1096 NumArgs(Args.size()) {
1097 auto **StoredArgs = getTrailingObjects<Expr *>();
1098 for (unsigned I = 0; I != Args.size(); ++I) {
1099 if (Args[I]->containsUnexpandedParameterPack())
1100 ExprBits.ContainsUnexpandedParameterPack = true;
1102 StoredArgs[I] = Args[I];
1106 CXXUnresolvedConstructExpr *
1107 CXXUnresolvedConstructExpr::Create(const ASTContext &C,
1108 TypeSourceInfo *Type,
1109 SourceLocation LParenLoc,
1110 ArrayRef<Expr*> Args,
1111 SourceLocation RParenLoc) {
1112 void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(Args.size()));
1113 return new (Mem) CXXUnresolvedConstructExpr(Type, LParenLoc, Args, RParenLoc);
1116 CXXUnresolvedConstructExpr *
1117 CXXUnresolvedConstructExpr::CreateEmpty(const ASTContext &C, unsigned NumArgs) {
1118 Stmt::EmptyShell Empty;
1119 void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(NumArgs));
1120 return new (Mem) CXXUnresolvedConstructExpr(Empty, NumArgs);
1123 SourceLocation CXXUnresolvedConstructExpr::getBeginLoc() const {
1124 return Type->getTypeLoc().getBeginLoc();
1127 CXXDependentScopeMemberExpr::CXXDependentScopeMemberExpr(
1128 const ASTContext &C, Expr *Base, QualType BaseType, bool IsArrow,
1129 SourceLocation OperatorLoc, NestedNameSpecifierLoc QualifierLoc,
1130 SourceLocation TemplateKWLoc, NamedDecl *FirstQualifierFoundInScope,
1131 DeclarationNameInfo MemberNameInfo,
1132 const TemplateArgumentListInfo *TemplateArgs)
1133 : Expr(CXXDependentScopeMemberExprClass, C.DependentTy, VK_LValue,
1134 OK_Ordinary, true, true, true,
1135 ((Base && Base->containsUnexpandedParameterPack()) ||
1137 QualifierLoc.getNestedNameSpecifier()
1138 ->containsUnexpandedParameterPack()) ||
1139 MemberNameInfo.containsUnexpandedParameterPack())),
1140 Base(Base), BaseType(BaseType), IsArrow(IsArrow),
1141 HasTemplateKWAndArgsInfo(TemplateArgs != nullptr ||
1142 TemplateKWLoc.isValid()),
1143 OperatorLoc(OperatorLoc), QualifierLoc(QualifierLoc),
1144 FirstQualifierFoundInScope(FirstQualifierFoundInScope),
1145 MemberNameInfo(MemberNameInfo) {
1147 bool Dependent = true;
1148 bool InstantiationDependent = true;
1149 bool ContainsUnexpandedParameterPack = false;
1150 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
1151 TemplateKWLoc, *TemplateArgs, getTrailingObjects<TemplateArgumentLoc>(),
1152 Dependent, InstantiationDependent, ContainsUnexpandedParameterPack);
1153 if (ContainsUnexpandedParameterPack)
1154 ExprBits.ContainsUnexpandedParameterPack = true;
1155 } else if (TemplateKWLoc.isValid()) {
1156 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
1161 CXXDependentScopeMemberExpr *
1162 CXXDependentScopeMemberExpr::Create(const ASTContext &C,
1163 Expr *Base, QualType BaseType, bool IsArrow,
1164 SourceLocation OperatorLoc,
1165 NestedNameSpecifierLoc QualifierLoc,
1166 SourceLocation TemplateKWLoc,
1167 NamedDecl *FirstQualifierFoundInScope,
1168 DeclarationNameInfo MemberNameInfo,
1169 const TemplateArgumentListInfo *TemplateArgs) {
1170 bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid();
1171 unsigned NumTemplateArgs = TemplateArgs ? TemplateArgs->size() : 0;
1173 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1174 HasTemplateKWAndArgsInfo, NumTemplateArgs);
1176 void *Mem = C.Allocate(Size, alignof(CXXDependentScopeMemberExpr));
1177 return new (Mem) CXXDependentScopeMemberExpr(C, Base, BaseType,
1178 IsArrow, OperatorLoc,
1181 FirstQualifierFoundInScope,
1182 MemberNameInfo, TemplateArgs);
1185 CXXDependentScopeMemberExpr *
1186 CXXDependentScopeMemberExpr::CreateEmpty(const ASTContext &C,
1187 bool HasTemplateKWAndArgsInfo,
1188 unsigned NumTemplateArgs) {
1189 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo);
1191 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1192 HasTemplateKWAndArgsInfo, NumTemplateArgs);
1193 void *Mem = C.Allocate(Size, alignof(CXXDependentScopeMemberExpr));
1195 new (Mem) CXXDependentScopeMemberExpr(C, nullptr, QualType(),
1196 false, SourceLocation(),
1197 NestedNameSpecifierLoc(),
1198 SourceLocation(), nullptr,
1199 DeclarationNameInfo(), nullptr);
1200 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
1204 bool CXXDependentScopeMemberExpr::isImplicitAccess() const {
1208 return cast<Expr>(Base)->isImplicitCXXThis();
1211 static bool hasOnlyNonStaticMemberFunctions(UnresolvedSetIterator begin,
1212 UnresolvedSetIterator end) {
1214 NamedDecl *decl = *begin;
1215 if (isa<UnresolvedUsingValueDecl>(decl))
1218 // Unresolved member expressions should only contain methods and
1219 // method templates.
1220 if (cast<CXXMethodDecl>(decl->getUnderlyingDecl()->getAsFunction())
1223 } while (++begin != end);
1228 UnresolvedMemberExpr::UnresolvedMemberExpr(const ASTContext &C,
1229 bool HasUnresolvedUsing,
1230 Expr *Base, QualType BaseType,
1232 SourceLocation OperatorLoc,
1233 NestedNameSpecifierLoc QualifierLoc,
1234 SourceLocation TemplateKWLoc,
1235 const DeclarationNameInfo &MemberNameInfo,
1236 const TemplateArgumentListInfo *TemplateArgs,
1237 UnresolvedSetIterator Begin,
1238 UnresolvedSetIterator End)
1240 UnresolvedMemberExprClass, C, QualifierLoc, TemplateKWLoc,
1241 MemberNameInfo, TemplateArgs, Begin, End,
1243 ((Base && Base->isTypeDependent()) || BaseType->isDependentType()),
1244 ((Base && Base->isInstantiationDependent()) ||
1245 BaseType->isInstantiationDependentType()),
1246 // Contains unexpanded parameter pack
1247 ((Base && Base->containsUnexpandedParameterPack()) ||
1248 BaseType->containsUnexpandedParameterPack())),
1249 IsArrow(IsArrow), HasUnresolvedUsing(HasUnresolvedUsing), Base(Base),
1250 BaseType(BaseType), OperatorLoc(OperatorLoc) {
1251 // Check whether all of the members are non-static member functions,
1252 // and if so, mark give this bound-member type instead of overload type.
1253 if (hasOnlyNonStaticMemberFunctions(Begin, End))
1254 setType(C.BoundMemberTy);
1257 bool UnresolvedMemberExpr::isImplicitAccess() const {
1261 return cast<Expr>(Base)->isImplicitCXXThis();
1264 UnresolvedMemberExpr *UnresolvedMemberExpr::Create(
1265 const ASTContext &C, bool HasUnresolvedUsing, Expr *Base, QualType BaseType,
1266 bool IsArrow, SourceLocation OperatorLoc,
1267 NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateKWLoc,
1268 const DeclarationNameInfo &MemberNameInfo,
1269 const TemplateArgumentListInfo *TemplateArgs, UnresolvedSetIterator Begin,
1270 UnresolvedSetIterator End) {
1271 bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid();
1273 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1274 HasTemplateKWAndArgsInfo, TemplateArgs ? TemplateArgs->size() : 0);
1276 void *Mem = C.Allocate(Size, alignof(UnresolvedMemberExpr));
1277 return new (Mem) UnresolvedMemberExpr(
1278 C, HasUnresolvedUsing, Base, BaseType, IsArrow, OperatorLoc, QualifierLoc,
1279 TemplateKWLoc, MemberNameInfo, TemplateArgs, Begin, End);
1282 UnresolvedMemberExpr *
1283 UnresolvedMemberExpr::CreateEmpty(const ASTContext &C,
1284 bool HasTemplateKWAndArgsInfo,
1285 unsigned NumTemplateArgs) {
1286 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo);
1288 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1289 HasTemplateKWAndArgsInfo, NumTemplateArgs);
1291 void *Mem = C.Allocate(Size, alignof(UnresolvedMemberExpr));
1292 auto *E = new (Mem) UnresolvedMemberExpr(EmptyShell());
1293 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
1297 CXXRecordDecl *UnresolvedMemberExpr::getNamingClass() const {
1298 // Unlike for UnresolvedLookupExpr, it is very easy to re-derive this.
1300 // If there was a nested name specifier, it names the naming class.
1301 // It can't be dependent: after all, we were actually able to do the
1303 CXXRecordDecl *Record = nullptr;
1304 auto *NNS = getQualifier();
1305 if (NNS && NNS->getKind() != NestedNameSpecifier::Super) {
1306 const Type *T = getQualifier()->getAsType();
1307 assert(T && "qualifier in member expression does not name type");
1308 Record = T->getAsCXXRecordDecl();
1309 assert(Record && "qualifier in member expression does not name record");
1311 // Otherwise the naming class must have been the base class.
1313 QualType BaseType = getBaseType().getNonReferenceType();
1315 const auto *PT = BaseType->getAs<PointerType>();
1316 assert(PT && "base of arrow member access is not pointer");
1317 BaseType = PT->getPointeeType();
1320 Record = BaseType->getAsCXXRecordDecl();
1321 assert(Record && "base of member expression does not name record");
1328 SizeOfPackExpr::Create(ASTContext &Context, SourceLocation OperatorLoc,
1329 NamedDecl *Pack, SourceLocation PackLoc,
1330 SourceLocation RParenLoc,
1331 Optional<unsigned> Length,
1332 ArrayRef<TemplateArgument> PartialArgs) {
1334 Context.Allocate(totalSizeToAlloc<TemplateArgument>(PartialArgs.size()));
1335 return new (Storage) SizeOfPackExpr(Context.getSizeType(), OperatorLoc, Pack,
1336 PackLoc, RParenLoc, Length, PartialArgs);
1339 SizeOfPackExpr *SizeOfPackExpr::CreateDeserialized(ASTContext &Context,
1340 unsigned NumPartialArgs) {
1342 Context.Allocate(totalSizeToAlloc<TemplateArgument>(NumPartialArgs));
1343 return new (Storage) SizeOfPackExpr(EmptyShell(), NumPartialArgs);
1346 SubstNonTypeTemplateParmPackExpr::
1347 SubstNonTypeTemplateParmPackExpr(QualType T,
1348 ExprValueKind ValueKind,
1349 NonTypeTemplateParmDecl *Param,
1350 SourceLocation NameLoc,
1351 const TemplateArgument &ArgPack)
1352 : Expr(SubstNonTypeTemplateParmPackExprClass, T, ValueKind, OK_Ordinary,
1353 true, true, true, true),
1354 Param(Param), Arguments(ArgPack.pack_begin()),
1355 NumArguments(ArgPack.pack_size()), NameLoc(NameLoc) {}
1357 TemplateArgument SubstNonTypeTemplateParmPackExpr::getArgumentPack() const {
1358 return TemplateArgument(llvm::makeArrayRef(Arguments, NumArguments));
1361 FunctionParmPackExpr::FunctionParmPackExpr(QualType T, ParmVarDecl *ParamPack,
1362 SourceLocation NameLoc,
1364 ParmVarDecl *const *Params)
1365 : Expr(FunctionParmPackExprClass, T, VK_LValue, OK_Ordinary, true, true,
1367 ParamPack(ParamPack), NameLoc(NameLoc), NumParameters(NumParams) {
1369 std::uninitialized_copy(Params, Params + NumParams,
1370 getTrailingObjects<ParmVarDecl *>());
1373 FunctionParmPackExpr *
1374 FunctionParmPackExpr::Create(const ASTContext &Context, QualType T,
1375 ParmVarDecl *ParamPack, SourceLocation NameLoc,
1376 ArrayRef<ParmVarDecl *> Params) {
1377 return new (Context.Allocate(totalSizeToAlloc<ParmVarDecl *>(Params.size())))
1378 FunctionParmPackExpr(T, ParamPack, NameLoc, Params.size(), Params.data());
1381 FunctionParmPackExpr *
1382 FunctionParmPackExpr::CreateEmpty(const ASTContext &Context,
1383 unsigned NumParams) {
1384 return new (Context.Allocate(totalSizeToAlloc<ParmVarDecl *>(NumParams)))
1385 FunctionParmPackExpr(QualType(), nullptr, SourceLocation(), 0, nullptr);
1388 void MaterializeTemporaryExpr::setExtendingDecl(const ValueDecl *ExtendedBy,
1389 unsigned ManglingNumber) {
1390 // We only need extra state if we have to remember more than just the Stmt.
1394 // We may need to allocate extra storage for the mangling number and the
1395 // extended-by ValueDecl.
1396 if (!State.is<ExtraState *>()) {
1397 auto *ES = new (ExtendedBy->getASTContext()) ExtraState;
1398 ES->Temporary = State.get<Stmt *>();
1402 auto ES = State.get<ExtraState *>();
1403 ES->ExtendingDecl = ExtendedBy;
1404 ES->ManglingNumber = ManglingNumber;
1407 TypeTraitExpr::TypeTraitExpr(QualType T, SourceLocation Loc, TypeTrait Kind,
1408 ArrayRef<TypeSourceInfo *> Args,
1409 SourceLocation RParenLoc,
1411 : Expr(TypeTraitExprClass, T, VK_RValue, OK_Ordinary,
1412 /*TypeDependent=*/false,
1413 /*ValueDependent=*/false,
1414 /*InstantiationDependent=*/false,
1415 /*ContainsUnexpandedParameterPack=*/false),
1416 Loc(Loc), RParenLoc(RParenLoc) {
1417 TypeTraitExprBits.Kind = Kind;
1418 TypeTraitExprBits.Value = Value;
1419 TypeTraitExprBits.NumArgs = Args.size();
1421 auto **ToArgs = getTrailingObjects<TypeSourceInfo *>();
1423 for (unsigned I = 0, N = Args.size(); I != N; ++I) {
1424 if (Args[I]->getType()->isDependentType())
1425 setValueDependent(true);
1426 if (Args[I]->getType()->isInstantiationDependentType())
1427 setInstantiationDependent(true);
1428 if (Args[I]->getType()->containsUnexpandedParameterPack())
1429 setContainsUnexpandedParameterPack(true);
1431 ToArgs[I] = Args[I];
1435 TypeTraitExpr *TypeTraitExpr::Create(const ASTContext &C, QualType T,
1438 ArrayRef<TypeSourceInfo *> Args,
1439 SourceLocation RParenLoc,
1441 void *Mem = C.Allocate(totalSizeToAlloc<TypeSourceInfo *>(Args.size()));
1442 return new (Mem) TypeTraitExpr(T, Loc, Kind, Args, RParenLoc, Value);
1445 TypeTraitExpr *TypeTraitExpr::CreateDeserialized(const ASTContext &C,
1447 void *Mem = C.Allocate(totalSizeToAlloc<TypeSourceInfo *>(NumArgs));
1448 return new (Mem) TypeTraitExpr(EmptyShell());
1451 void ArrayTypeTraitExpr::anchor() {}