1 //===--- ExprCXX.cpp - (C++) Expression AST Node Implementation -----------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the subclesses of Expr class declared in ExprCXX.h
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "clang/AST/ASTContext.h"
15 #include "clang/AST/Attr.h"
16 #include "clang/AST/DeclCXX.h"
17 #include "clang/AST/DeclTemplate.h"
18 #include "clang/AST/ExprCXX.h"
19 #include "clang/AST/TypeLoc.h"
20 #include "clang/Basic/IdentifierTable.h"
21 using namespace clang;
22
23
24 //===----------------------------------------------------------------------===//
25 // Child Iterators for iterating over subexpressions/substatements
26 //===----------------------------------------------------------------------===//
27
isPotentiallyEvaluated() const28 bool CXXTypeidExpr::isPotentiallyEvaluated() const {
29 if (isTypeOperand())
30 return false;
31
32 // C++11 [expr.typeid]p3:
33 // When typeid is applied to an expression other than a glvalue of
34 // polymorphic class type, [...] the expression is an unevaluated operand.
35 const Expr *E = getExprOperand();
36 if (const CXXRecordDecl *RD = E->getType()->getAsCXXRecordDecl())
37 if (RD->isPolymorphic() && E->isGLValue())
38 return true;
39
40 return false;
41 }
42
getTypeOperand(ASTContext & Context) const43 QualType CXXTypeidExpr::getTypeOperand(ASTContext &Context) const {
44 assert(isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)");
45 Qualifiers Quals;
46 return Context.getUnqualifiedArrayType(
47 Operand.get<TypeSourceInfo *>()->getType().getNonReferenceType(), Quals);
48 }
49
getTypeOperand(ASTContext & Context) const50 QualType CXXUuidofExpr::getTypeOperand(ASTContext &Context) const {
51 assert(isTypeOperand() && "Cannot call getTypeOperand for __uuidof(expr)");
52 Qualifiers Quals;
53 return Context.getUnqualifiedArrayType(
54 Operand.get<TypeSourceInfo *>()->getType().getNonReferenceType(), Quals);
55 }
56
57 // static
GetUuidAttrOfType(QualType QT,bool * RDHasMultipleGUIDsPtr)58 const UuidAttr *CXXUuidofExpr::GetUuidAttrOfType(QualType QT,
59 bool *RDHasMultipleGUIDsPtr) {
60 // Optionally remove one level of pointer, reference or array indirection.
61 const Type *Ty = QT.getTypePtr();
62 if (QT->isPointerType() || QT->isReferenceType())
63 Ty = QT->getPointeeType().getTypePtr();
64 else if (QT->isArrayType())
65 Ty = Ty->getBaseElementTypeUnsafe();
66
67 const CXXRecordDecl *RD = Ty->getAsCXXRecordDecl();
68 if (!RD)
69 return nullptr;
70
71 if (const UuidAttr *Uuid = RD->getMostRecentDecl()->getAttr<UuidAttr>())
72 return Uuid;
73
74 // __uuidof can grab UUIDs from template arguments.
75 if (const ClassTemplateSpecializationDecl *CTSD =
76 dyn_cast<ClassTemplateSpecializationDecl>(RD)) {
77 const TemplateArgumentList &TAL = CTSD->getTemplateArgs();
78 const UuidAttr *UuidForRD = nullptr;
79
80 for (const TemplateArgument &TA : TAL.asArray()) {
81 bool SeenMultipleGUIDs = false;
82
83 const UuidAttr *UuidForTA = nullptr;
84 if (TA.getKind() == TemplateArgument::Type)
85 UuidForTA = GetUuidAttrOfType(TA.getAsType(), &SeenMultipleGUIDs);
86 else if (TA.getKind() == TemplateArgument::Declaration)
87 UuidForTA =
88 GetUuidAttrOfType(TA.getAsDecl()->getType(), &SeenMultipleGUIDs);
89
90 // If the template argument has a UUID, there are three cases:
91 // - This is the first UUID seen for this RecordDecl.
92 // - This is a different UUID than previously seen for this RecordDecl.
93 // - This is the same UUID than previously seen for this RecordDecl.
94 if (UuidForTA) {
95 if (!UuidForRD)
96 UuidForRD = UuidForTA;
97 else if (UuidForRD != UuidForTA)
98 SeenMultipleGUIDs = true;
99 }
100
101 // Seeing multiple UUIDs means that we couldn't find a UUID
102 if (SeenMultipleGUIDs) {
103 if (RDHasMultipleGUIDsPtr)
104 *RDHasMultipleGUIDsPtr = true;
105 return nullptr;
106 }
107 }
108
109 return UuidForRD;
110 }
111
112 return nullptr;
113 }
114
getUuidAsStringRef(ASTContext & Context) const115 StringRef CXXUuidofExpr::getUuidAsStringRef(ASTContext &Context) const {
116 StringRef Uuid;
117 if (isTypeOperand())
118 Uuid = CXXUuidofExpr::GetUuidAttrOfType(getTypeOperand(Context))->getGuid();
119 else {
120 // Special case: __uuidof(0) means an all-zero GUID.
121 Expr *Op = getExprOperand();
122 if (!Op->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNull))
123 Uuid = CXXUuidofExpr::GetUuidAttrOfType(Op->getType())->getGuid();
124 else
125 Uuid = "00000000-0000-0000-0000-000000000000";
126 }
127 return Uuid;
128 }
129
130 // CXXScalarValueInitExpr
getLocStart() const131 SourceLocation CXXScalarValueInitExpr::getLocStart() const {
132 return TypeInfo ? TypeInfo->getTypeLoc().getBeginLoc() : RParenLoc;
133 }
134
135 // CXXNewExpr
CXXNewExpr(const ASTContext & C,bool globalNew,FunctionDecl * operatorNew,FunctionDecl * operatorDelete,bool usualArrayDeleteWantsSize,ArrayRef<Expr * > placementArgs,SourceRange typeIdParens,Expr * arraySize,InitializationStyle initializationStyle,Expr * initializer,QualType ty,TypeSourceInfo * allocatedTypeInfo,SourceRange Range,SourceRange directInitRange)136 CXXNewExpr::CXXNewExpr(const ASTContext &C, bool globalNew,
137 FunctionDecl *operatorNew, FunctionDecl *operatorDelete,
138 bool usualArrayDeleteWantsSize,
139 ArrayRef<Expr*> placementArgs,
140 SourceRange typeIdParens, Expr *arraySize,
141 InitializationStyle initializationStyle,
142 Expr *initializer, QualType ty,
143 TypeSourceInfo *allocatedTypeInfo,
144 SourceRange Range, SourceRange directInitRange)
145 : Expr(CXXNewExprClass, ty, VK_RValue, OK_Ordinary,
146 ty->isDependentType(), ty->isDependentType(),
147 ty->isInstantiationDependentType(),
148 ty->containsUnexpandedParameterPack()),
149 SubExprs(nullptr), OperatorNew(operatorNew), OperatorDelete(operatorDelete),
150 AllocatedTypeInfo(allocatedTypeInfo), TypeIdParens(typeIdParens),
151 Range(Range), DirectInitRange(directInitRange),
152 GlobalNew(globalNew), UsualArrayDeleteWantsSize(usualArrayDeleteWantsSize) {
153 assert((initializer != nullptr || initializationStyle == NoInit) &&
154 "Only NoInit can have no initializer.");
155 StoredInitializationStyle = initializer ? initializationStyle + 1 : 0;
156 AllocateArgsArray(C, arraySize != nullptr, placementArgs.size(),
157 initializer != nullptr);
158 unsigned i = 0;
159 if (Array) {
160 if (arraySize->isInstantiationDependent())
161 ExprBits.InstantiationDependent = true;
162
163 if (arraySize->containsUnexpandedParameterPack())
164 ExprBits.ContainsUnexpandedParameterPack = true;
165
166 SubExprs[i++] = arraySize;
167 }
168
169 if (initializer) {
170 if (initializer->isInstantiationDependent())
171 ExprBits.InstantiationDependent = true;
172
173 if (initializer->containsUnexpandedParameterPack())
174 ExprBits.ContainsUnexpandedParameterPack = true;
175
176 SubExprs[i++] = initializer;
177 }
178
179 for (unsigned j = 0; j != placementArgs.size(); ++j) {
180 if (placementArgs[j]->isInstantiationDependent())
181 ExprBits.InstantiationDependent = true;
182 if (placementArgs[j]->containsUnexpandedParameterPack())
183 ExprBits.ContainsUnexpandedParameterPack = true;
184
185 SubExprs[i++] = placementArgs[j];
186 }
187
188 switch (getInitializationStyle()) {
189 case CallInit:
190 this->Range.setEnd(DirectInitRange.getEnd()); break;
191 case ListInit:
192 this->Range.setEnd(getInitializer()->getSourceRange().getEnd()); break;
193 default:
194 if (TypeIdParens.isValid())
195 this->Range.setEnd(TypeIdParens.getEnd());
196 break;
197 }
198 }
199
AllocateArgsArray(const ASTContext & C,bool isArray,unsigned numPlaceArgs,bool hasInitializer)200 void CXXNewExpr::AllocateArgsArray(const ASTContext &C, bool isArray,
201 unsigned numPlaceArgs, bool hasInitializer){
202 assert(SubExprs == nullptr && "SubExprs already allocated");
203 Array = isArray;
204 NumPlacementArgs = numPlaceArgs;
205
206 unsigned TotalSize = Array + hasInitializer + NumPlacementArgs;
207 SubExprs = new (C) Stmt*[TotalSize];
208 }
209
shouldNullCheckAllocation(const ASTContext & Ctx) const210 bool CXXNewExpr::shouldNullCheckAllocation(const ASTContext &Ctx) const {
211 return getOperatorNew()->getType()->
212 castAs<FunctionProtoType>()->isNothrow(Ctx);
213 }
214
215 // CXXDeleteExpr
getDestroyedType() const216 QualType CXXDeleteExpr::getDestroyedType() const {
217 const Expr *Arg = getArgument();
218 // The type-to-delete may not be a pointer if it's a dependent type.
219 const QualType ArgType = Arg->getType();
220
221 if (ArgType->isDependentType() && !ArgType->isPointerType())
222 return QualType();
223
224 return ArgType->getAs<PointerType>()->getPointeeType();
225 }
226
227 // CXXPseudoDestructorExpr
PseudoDestructorTypeStorage(TypeSourceInfo * Info)228 PseudoDestructorTypeStorage::PseudoDestructorTypeStorage(TypeSourceInfo *Info)
229 : Type(Info)
230 {
231 Location = Info->getTypeLoc().getLocalSourceRange().getBegin();
232 }
233
CXXPseudoDestructorExpr(const ASTContext & Context,Expr * Base,bool isArrow,SourceLocation OperatorLoc,NestedNameSpecifierLoc QualifierLoc,TypeSourceInfo * ScopeType,SourceLocation ColonColonLoc,SourceLocation TildeLoc,PseudoDestructorTypeStorage DestroyedType)234 CXXPseudoDestructorExpr::CXXPseudoDestructorExpr(const ASTContext &Context,
235 Expr *Base, bool isArrow, SourceLocation OperatorLoc,
236 NestedNameSpecifierLoc QualifierLoc, TypeSourceInfo *ScopeType,
237 SourceLocation ColonColonLoc, SourceLocation TildeLoc,
238 PseudoDestructorTypeStorage DestroyedType)
239 : Expr(CXXPseudoDestructorExprClass,
240 Context.getPointerType(Context.getFunctionType(
241 Context.VoidTy, None,
242 FunctionProtoType::ExtProtoInfo(
243 Context.getDefaultCallingConvention(false, true)))),
244 VK_RValue, OK_Ordinary,
245 /*isTypeDependent=*/(Base->isTypeDependent() ||
246 (DestroyedType.getTypeSourceInfo() &&
247 DestroyedType.getTypeSourceInfo()->getType()->isDependentType())),
248 /*isValueDependent=*/Base->isValueDependent(),
249 (Base->isInstantiationDependent() ||
250 (QualifierLoc &&
251 QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent()) ||
252 (ScopeType &&
253 ScopeType->getType()->isInstantiationDependentType()) ||
254 (DestroyedType.getTypeSourceInfo() &&
255 DestroyedType.getTypeSourceInfo()->getType()
256 ->isInstantiationDependentType())),
257 // ContainsUnexpandedParameterPack
258 (Base->containsUnexpandedParameterPack() ||
259 (QualifierLoc &&
260 QualifierLoc.getNestedNameSpecifier()
261 ->containsUnexpandedParameterPack()) ||
262 (ScopeType &&
263 ScopeType->getType()->containsUnexpandedParameterPack()) ||
264 (DestroyedType.getTypeSourceInfo() &&
265 DestroyedType.getTypeSourceInfo()->getType()
266 ->containsUnexpandedParameterPack()))),
267 Base(static_cast<Stmt *>(Base)), IsArrow(isArrow),
268 OperatorLoc(OperatorLoc), QualifierLoc(QualifierLoc),
269 ScopeType(ScopeType), ColonColonLoc(ColonColonLoc), TildeLoc(TildeLoc),
270 DestroyedType(DestroyedType) { }
271
getDestroyedType() const272 QualType CXXPseudoDestructorExpr::getDestroyedType() const {
273 if (TypeSourceInfo *TInfo = DestroyedType.getTypeSourceInfo())
274 return TInfo->getType();
275
276 return QualType();
277 }
278
getLocEnd() const279 SourceLocation CXXPseudoDestructorExpr::getLocEnd() const {
280 SourceLocation End = DestroyedType.getLocation();
281 if (TypeSourceInfo *TInfo = DestroyedType.getTypeSourceInfo())
282 End = TInfo->getTypeLoc().getLocalSourceRange().getEnd();
283 return End;
284 }
285
286 // UnresolvedLookupExpr
287 UnresolvedLookupExpr *
Create(const ASTContext & C,CXXRecordDecl * NamingClass,NestedNameSpecifierLoc QualifierLoc,SourceLocation TemplateKWLoc,const DeclarationNameInfo & NameInfo,bool ADL,const TemplateArgumentListInfo * Args,UnresolvedSetIterator Begin,UnresolvedSetIterator End)288 UnresolvedLookupExpr::Create(const ASTContext &C,
289 CXXRecordDecl *NamingClass,
290 NestedNameSpecifierLoc QualifierLoc,
291 SourceLocation TemplateKWLoc,
292 const DeclarationNameInfo &NameInfo,
293 bool ADL,
294 const TemplateArgumentListInfo *Args,
295 UnresolvedSetIterator Begin,
296 UnresolvedSetIterator End)
297 {
298 assert(Args || TemplateKWLoc.isValid());
299 unsigned num_args = Args ? Args->size() : 0;
300 void *Mem = C.Allocate(sizeof(UnresolvedLookupExpr) +
301 ASTTemplateKWAndArgsInfo::sizeFor(num_args));
302 return new (Mem) UnresolvedLookupExpr(C, NamingClass, QualifierLoc,
303 TemplateKWLoc, NameInfo,
304 ADL, /*Overload*/ true, Args,
305 Begin, End);
306 }
307
308 UnresolvedLookupExpr *
CreateEmpty(const ASTContext & C,bool HasTemplateKWAndArgsInfo,unsigned NumTemplateArgs)309 UnresolvedLookupExpr::CreateEmpty(const ASTContext &C,
310 bool HasTemplateKWAndArgsInfo,
311 unsigned NumTemplateArgs) {
312 std::size_t size = sizeof(UnresolvedLookupExpr);
313 if (HasTemplateKWAndArgsInfo)
314 size += ASTTemplateKWAndArgsInfo::sizeFor(NumTemplateArgs);
315
316 void *Mem = C.Allocate(size, llvm::alignOf<UnresolvedLookupExpr>());
317 UnresolvedLookupExpr *E = new (Mem) UnresolvedLookupExpr(EmptyShell());
318 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
319 return E;
320 }
321
OverloadExpr(StmtClass K,const ASTContext & C,NestedNameSpecifierLoc QualifierLoc,SourceLocation TemplateKWLoc,const DeclarationNameInfo & NameInfo,const TemplateArgumentListInfo * TemplateArgs,UnresolvedSetIterator Begin,UnresolvedSetIterator End,bool KnownDependent,bool KnownInstantiationDependent,bool KnownContainsUnexpandedParameterPack)322 OverloadExpr::OverloadExpr(StmtClass K, const ASTContext &C,
323 NestedNameSpecifierLoc QualifierLoc,
324 SourceLocation TemplateKWLoc,
325 const DeclarationNameInfo &NameInfo,
326 const TemplateArgumentListInfo *TemplateArgs,
327 UnresolvedSetIterator Begin,
328 UnresolvedSetIterator End,
329 bool KnownDependent,
330 bool KnownInstantiationDependent,
331 bool KnownContainsUnexpandedParameterPack)
332 : Expr(K, C.OverloadTy, VK_LValue, OK_Ordinary, KnownDependent,
333 KnownDependent,
334 (KnownInstantiationDependent ||
335 NameInfo.isInstantiationDependent() ||
336 (QualifierLoc &&
337 QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent())),
338 (KnownContainsUnexpandedParameterPack ||
339 NameInfo.containsUnexpandedParameterPack() ||
340 (QualifierLoc &&
341 QualifierLoc.getNestedNameSpecifier()
342 ->containsUnexpandedParameterPack()))),
343 NameInfo(NameInfo), QualifierLoc(QualifierLoc),
344 Results(nullptr), NumResults(End - Begin),
345 HasTemplateKWAndArgsInfo(TemplateArgs != nullptr ||
346 TemplateKWLoc.isValid()) {
347 NumResults = End - Begin;
348 if (NumResults) {
349 // Determine whether this expression is type-dependent.
350 for (UnresolvedSetImpl::const_iterator I = Begin; I != End; ++I) {
351 if ((*I)->getDeclContext()->isDependentContext() ||
352 isa<UnresolvedUsingValueDecl>(*I)) {
353 ExprBits.TypeDependent = true;
354 ExprBits.ValueDependent = true;
355 ExprBits.InstantiationDependent = true;
356 }
357 }
358
359 Results = static_cast<DeclAccessPair *>(
360 C.Allocate(sizeof(DeclAccessPair) * NumResults,
361 llvm::alignOf<DeclAccessPair>()));
362 memcpy(Results, &*Begin.getIterator(),
363 NumResults * sizeof(DeclAccessPair));
364 }
365
366 // If we have explicit template arguments, check for dependent
367 // template arguments and whether they contain any unexpanded pack
368 // expansions.
369 if (TemplateArgs) {
370 bool Dependent = false;
371 bool InstantiationDependent = false;
372 bool ContainsUnexpandedParameterPack = false;
373 getTemplateKWAndArgsInfo()->initializeFrom(TemplateKWLoc, *TemplateArgs,
374 Dependent,
375 InstantiationDependent,
376 ContainsUnexpandedParameterPack);
377
378 if (Dependent) {
379 ExprBits.TypeDependent = true;
380 ExprBits.ValueDependent = true;
381 }
382 if (InstantiationDependent)
383 ExprBits.InstantiationDependent = true;
384 if (ContainsUnexpandedParameterPack)
385 ExprBits.ContainsUnexpandedParameterPack = true;
386 } else if (TemplateKWLoc.isValid()) {
387 getTemplateKWAndArgsInfo()->initializeFrom(TemplateKWLoc);
388 }
389
390 if (isTypeDependent())
391 setType(C.DependentTy);
392 }
393
initializeResults(const ASTContext & C,UnresolvedSetIterator Begin,UnresolvedSetIterator End)394 void OverloadExpr::initializeResults(const ASTContext &C,
395 UnresolvedSetIterator Begin,
396 UnresolvedSetIterator End) {
397 assert(!Results && "Results already initialized!");
398 NumResults = End - Begin;
399 if (NumResults) {
400 Results = static_cast<DeclAccessPair *>(
401 C.Allocate(sizeof(DeclAccessPair) * NumResults,
402
403 llvm::alignOf<DeclAccessPair>()));
404 memcpy(Results, &*Begin.getIterator(),
405 NumResults * sizeof(DeclAccessPair));
406 }
407 }
408
getNamingClass() const409 CXXRecordDecl *OverloadExpr::getNamingClass() const {
410 if (isa<UnresolvedLookupExpr>(this))
411 return cast<UnresolvedLookupExpr>(this)->getNamingClass();
412 else
413 return cast<UnresolvedMemberExpr>(this)->getNamingClass();
414 }
415
416 // DependentScopeDeclRefExpr
DependentScopeDeclRefExpr(QualType T,NestedNameSpecifierLoc QualifierLoc,SourceLocation TemplateKWLoc,const DeclarationNameInfo & NameInfo,const TemplateArgumentListInfo * Args)417 DependentScopeDeclRefExpr::DependentScopeDeclRefExpr(QualType T,
418 NestedNameSpecifierLoc QualifierLoc,
419 SourceLocation TemplateKWLoc,
420 const DeclarationNameInfo &NameInfo,
421 const TemplateArgumentListInfo *Args)
422 : Expr(DependentScopeDeclRefExprClass, T, VK_LValue, OK_Ordinary,
423 true, true,
424 (NameInfo.isInstantiationDependent() ||
425 (QualifierLoc &&
426 QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent())),
427 (NameInfo.containsUnexpandedParameterPack() ||
428 (QualifierLoc &&
429 QualifierLoc.getNestedNameSpecifier()
430 ->containsUnexpandedParameterPack()))),
431 QualifierLoc(QualifierLoc), NameInfo(NameInfo),
432 HasTemplateKWAndArgsInfo(Args != nullptr || TemplateKWLoc.isValid())
433 {
434 if (Args) {
435 bool Dependent = true;
436 bool InstantiationDependent = true;
437 bool ContainsUnexpandedParameterPack
438 = ExprBits.ContainsUnexpandedParameterPack;
439 getTemplateKWAndArgsInfo()->initializeFrom(TemplateKWLoc, *Args,
440 Dependent,
441 InstantiationDependent,
442 ContainsUnexpandedParameterPack);
443 ExprBits.ContainsUnexpandedParameterPack = ContainsUnexpandedParameterPack;
444 } else if (TemplateKWLoc.isValid()) {
445 getTemplateKWAndArgsInfo()->initializeFrom(TemplateKWLoc);
446 }
447 }
448
449 DependentScopeDeclRefExpr *
Create(const ASTContext & C,NestedNameSpecifierLoc QualifierLoc,SourceLocation TemplateKWLoc,const DeclarationNameInfo & NameInfo,const TemplateArgumentListInfo * Args)450 DependentScopeDeclRefExpr::Create(const ASTContext &C,
451 NestedNameSpecifierLoc QualifierLoc,
452 SourceLocation TemplateKWLoc,
453 const DeclarationNameInfo &NameInfo,
454 const TemplateArgumentListInfo *Args) {
455 assert(QualifierLoc && "should be created for dependent qualifiers");
456 std::size_t size = sizeof(DependentScopeDeclRefExpr);
457 if (Args)
458 size += ASTTemplateKWAndArgsInfo::sizeFor(Args->size());
459 else if (TemplateKWLoc.isValid())
460 size += ASTTemplateKWAndArgsInfo::sizeFor(0);
461 void *Mem = C.Allocate(size);
462 return new (Mem) DependentScopeDeclRefExpr(C.DependentTy, QualifierLoc,
463 TemplateKWLoc, NameInfo, Args);
464 }
465
466 DependentScopeDeclRefExpr *
CreateEmpty(const ASTContext & C,bool HasTemplateKWAndArgsInfo,unsigned NumTemplateArgs)467 DependentScopeDeclRefExpr::CreateEmpty(const ASTContext &C,
468 bool HasTemplateKWAndArgsInfo,
469 unsigned NumTemplateArgs) {
470 std::size_t size = sizeof(DependentScopeDeclRefExpr);
471 if (HasTemplateKWAndArgsInfo)
472 size += ASTTemplateKWAndArgsInfo::sizeFor(NumTemplateArgs);
473 void *Mem = C.Allocate(size);
474 DependentScopeDeclRefExpr *E
475 = new (Mem) DependentScopeDeclRefExpr(QualType(), NestedNameSpecifierLoc(),
476 SourceLocation(),
477 DeclarationNameInfo(), nullptr);
478 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
479 return E;
480 }
481
getLocStart() const482 SourceLocation CXXConstructExpr::getLocStart() const {
483 if (isa<CXXTemporaryObjectExpr>(this))
484 return cast<CXXTemporaryObjectExpr>(this)->getLocStart();
485 return Loc;
486 }
487
getLocEnd() const488 SourceLocation CXXConstructExpr::getLocEnd() const {
489 if (isa<CXXTemporaryObjectExpr>(this))
490 return cast<CXXTemporaryObjectExpr>(this)->getLocEnd();
491
492 if (ParenOrBraceRange.isValid())
493 return ParenOrBraceRange.getEnd();
494
495 SourceLocation End = Loc;
496 for (unsigned I = getNumArgs(); I > 0; --I) {
497 const Expr *Arg = getArg(I-1);
498 if (!Arg->isDefaultArgument()) {
499 SourceLocation NewEnd = Arg->getLocEnd();
500 if (NewEnd.isValid()) {
501 End = NewEnd;
502 break;
503 }
504 }
505 }
506
507 return End;
508 }
509
getSourceRangeImpl() const510 SourceRange CXXOperatorCallExpr::getSourceRangeImpl() const {
511 OverloadedOperatorKind Kind = getOperator();
512 if (Kind == OO_PlusPlus || Kind == OO_MinusMinus) {
513 if (getNumArgs() == 1)
514 // Prefix operator
515 return SourceRange(getOperatorLoc(), getArg(0)->getLocEnd());
516 else
517 // Postfix operator
518 return SourceRange(getArg(0)->getLocStart(), getOperatorLoc());
519 } else if (Kind == OO_Arrow) {
520 return getArg(0)->getSourceRange();
521 } else if (Kind == OO_Call) {
522 return SourceRange(getArg(0)->getLocStart(), getRParenLoc());
523 } else if (Kind == OO_Subscript) {
524 return SourceRange(getArg(0)->getLocStart(), getRParenLoc());
525 } else if (getNumArgs() == 1) {
526 return SourceRange(getOperatorLoc(), getArg(0)->getLocEnd());
527 } else if (getNumArgs() == 2) {
528 return SourceRange(getArg(0)->getLocStart(), getArg(1)->getLocEnd());
529 } else {
530 return getOperatorLoc();
531 }
532 }
533
getImplicitObjectArgument() const534 Expr *CXXMemberCallExpr::getImplicitObjectArgument() const {
535 const Expr *Callee = getCallee()->IgnoreParens();
536 if (const MemberExpr *MemExpr = dyn_cast<MemberExpr>(Callee))
537 return MemExpr->getBase();
538 if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(Callee))
539 if (BO->getOpcode() == BO_PtrMemD || BO->getOpcode() == BO_PtrMemI)
540 return BO->getLHS();
541
542 // FIXME: Will eventually need to cope with member pointers.
543 return nullptr;
544 }
545
getMethodDecl() const546 CXXMethodDecl *CXXMemberCallExpr::getMethodDecl() const {
547 if (const MemberExpr *MemExpr =
548 dyn_cast<MemberExpr>(getCallee()->IgnoreParens()))
549 return cast<CXXMethodDecl>(MemExpr->getMemberDecl());
550
551 // FIXME: Will eventually need to cope with member pointers.
552 return nullptr;
553 }
554
555
getRecordDecl() const556 CXXRecordDecl *CXXMemberCallExpr::getRecordDecl() const {
557 Expr* ThisArg = getImplicitObjectArgument();
558 if (!ThisArg)
559 return nullptr;
560
561 if (ThisArg->getType()->isAnyPointerType())
562 return ThisArg->getType()->getPointeeType()->getAsCXXRecordDecl();
563
564 return ThisArg->getType()->getAsCXXRecordDecl();
565 }
566
567
568 //===----------------------------------------------------------------------===//
569 // Named casts
570 //===----------------------------------------------------------------------===//
571
572 /// getCastName - Get the name of the C++ cast being used, e.g.,
573 /// "static_cast", "dynamic_cast", "reinterpret_cast", or
574 /// "const_cast". The returned pointer must not be freed.
getCastName() const575 const char *CXXNamedCastExpr::getCastName() const {
576 switch (getStmtClass()) {
577 case CXXStaticCastExprClass: return "static_cast";
578 case CXXDynamicCastExprClass: return "dynamic_cast";
579 case CXXReinterpretCastExprClass: return "reinterpret_cast";
580 case CXXConstCastExprClass: return "const_cast";
581 default: return "<invalid cast>";
582 }
583 }
584
Create(const ASTContext & C,QualType T,ExprValueKind VK,CastKind K,Expr * Op,const CXXCastPath * BasePath,TypeSourceInfo * WrittenTy,SourceLocation L,SourceLocation RParenLoc,SourceRange AngleBrackets)585 CXXStaticCastExpr *CXXStaticCastExpr::Create(const ASTContext &C, QualType T,
586 ExprValueKind VK,
587 CastKind K, Expr *Op,
588 const CXXCastPath *BasePath,
589 TypeSourceInfo *WrittenTy,
590 SourceLocation L,
591 SourceLocation RParenLoc,
592 SourceRange AngleBrackets) {
593 unsigned PathSize = (BasePath ? BasePath->size() : 0);
594 void *Buffer = C.Allocate(sizeof(CXXStaticCastExpr)
595 + PathSize * sizeof(CXXBaseSpecifier*));
596 CXXStaticCastExpr *E =
597 new (Buffer) CXXStaticCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
598 RParenLoc, AngleBrackets);
599 if (PathSize) E->setCastPath(*BasePath);
600 return E;
601 }
602
CreateEmpty(const ASTContext & C,unsigned PathSize)603 CXXStaticCastExpr *CXXStaticCastExpr::CreateEmpty(const ASTContext &C,
604 unsigned PathSize) {
605 void *Buffer =
606 C.Allocate(sizeof(CXXStaticCastExpr) + PathSize * sizeof(CXXBaseSpecifier*));
607 return new (Buffer) CXXStaticCastExpr(EmptyShell(), PathSize);
608 }
609
Create(const ASTContext & C,QualType T,ExprValueKind VK,CastKind K,Expr * Op,const CXXCastPath * BasePath,TypeSourceInfo * WrittenTy,SourceLocation L,SourceLocation RParenLoc,SourceRange AngleBrackets)610 CXXDynamicCastExpr *CXXDynamicCastExpr::Create(const ASTContext &C, QualType T,
611 ExprValueKind VK,
612 CastKind K, Expr *Op,
613 const CXXCastPath *BasePath,
614 TypeSourceInfo *WrittenTy,
615 SourceLocation L,
616 SourceLocation RParenLoc,
617 SourceRange AngleBrackets) {
618 unsigned PathSize = (BasePath ? BasePath->size() : 0);
619 void *Buffer = C.Allocate(sizeof(CXXDynamicCastExpr)
620 + PathSize * sizeof(CXXBaseSpecifier*));
621 CXXDynamicCastExpr *E =
622 new (Buffer) CXXDynamicCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
623 RParenLoc, AngleBrackets);
624 if (PathSize) E->setCastPath(*BasePath);
625 return E;
626 }
627
CreateEmpty(const ASTContext & C,unsigned PathSize)628 CXXDynamicCastExpr *CXXDynamicCastExpr::CreateEmpty(const ASTContext &C,
629 unsigned PathSize) {
630 void *Buffer =
631 C.Allocate(sizeof(CXXDynamicCastExpr) + PathSize * sizeof(CXXBaseSpecifier*));
632 return new (Buffer) CXXDynamicCastExpr(EmptyShell(), PathSize);
633 }
634
635 /// isAlwaysNull - Return whether the result of the dynamic_cast is proven
636 /// to always be null. For example:
637 ///
638 /// struct A { };
639 /// struct B final : A { };
640 /// struct C { };
641 ///
642 /// C *f(B* b) { return dynamic_cast<C*>(b); }
isAlwaysNull() const643 bool CXXDynamicCastExpr::isAlwaysNull() const
644 {
645 QualType SrcType = getSubExpr()->getType();
646 QualType DestType = getType();
647
648 if (const PointerType *SrcPTy = SrcType->getAs<PointerType>()) {
649 SrcType = SrcPTy->getPointeeType();
650 DestType = DestType->castAs<PointerType>()->getPointeeType();
651 }
652
653 if (DestType->isVoidType())
654 return false;
655
656 const CXXRecordDecl *SrcRD =
657 cast<CXXRecordDecl>(SrcType->castAs<RecordType>()->getDecl());
658
659 if (!SrcRD->hasAttr<FinalAttr>())
660 return false;
661
662 const CXXRecordDecl *DestRD =
663 cast<CXXRecordDecl>(DestType->castAs<RecordType>()->getDecl());
664
665 return !DestRD->isDerivedFrom(SrcRD);
666 }
667
668 CXXReinterpretCastExpr *
Create(const ASTContext & C,QualType T,ExprValueKind VK,CastKind K,Expr * Op,const CXXCastPath * BasePath,TypeSourceInfo * WrittenTy,SourceLocation L,SourceLocation RParenLoc,SourceRange AngleBrackets)669 CXXReinterpretCastExpr::Create(const ASTContext &C, QualType T,
670 ExprValueKind VK, CastKind K, Expr *Op,
671 const CXXCastPath *BasePath,
672 TypeSourceInfo *WrittenTy, SourceLocation L,
673 SourceLocation RParenLoc,
674 SourceRange AngleBrackets) {
675 unsigned PathSize = (BasePath ? BasePath->size() : 0);
676 void *Buffer =
677 C.Allocate(sizeof(CXXReinterpretCastExpr) + PathSize * sizeof(CXXBaseSpecifier*));
678 CXXReinterpretCastExpr *E =
679 new (Buffer) CXXReinterpretCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
680 RParenLoc, AngleBrackets);
681 if (PathSize) E->setCastPath(*BasePath);
682 return E;
683 }
684
685 CXXReinterpretCastExpr *
CreateEmpty(const ASTContext & C,unsigned PathSize)686 CXXReinterpretCastExpr::CreateEmpty(const ASTContext &C, unsigned PathSize) {
687 void *Buffer = C.Allocate(sizeof(CXXReinterpretCastExpr)
688 + PathSize * sizeof(CXXBaseSpecifier*));
689 return new (Buffer) CXXReinterpretCastExpr(EmptyShell(), PathSize);
690 }
691
Create(const ASTContext & C,QualType T,ExprValueKind VK,Expr * Op,TypeSourceInfo * WrittenTy,SourceLocation L,SourceLocation RParenLoc,SourceRange AngleBrackets)692 CXXConstCastExpr *CXXConstCastExpr::Create(const ASTContext &C, QualType T,
693 ExprValueKind VK, Expr *Op,
694 TypeSourceInfo *WrittenTy,
695 SourceLocation L,
696 SourceLocation RParenLoc,
697 SourceRange AngleBrackets) {
698 return new (C) CXXConstCastExpr(T, VK, Op, WrittenTy, L, RParenLoc, AngleBrackets);
699 }
700
CreateEmpty(const ASTContext & C)701 CXXConstCastExpr *CXXConstCastExpr::CreateEmpty(const ASTContext &C) {
702 return new (C) CXXConstCastExpr(EmptyShell());
703 }
704
705 CXXFunctionalCastExpr *
Create(const ASTContext & C,QualType T,ExprValueKind VK,TypeSourceInfo * Written,CastKind K,Expr * Op,const CXXCastPath * BasePath,SourceLocation L,SourceLocation R)706 CXXFunctionalCastExpr::Create(const ASTContext &C, QualType T, ExprValueKind VK,
707 TypeSourceInfo *Written, CastKind K, Expr *Op,
708 const CXXCastPath *BasePath,
709 SourceLocation L, SourceLocation R) {
710 unsigned PathSize = (BasePath ? BasePath->size() : 0);
711 void *Buffer = C.Allocate(sizeof(CXXFunctionalCastExpr)
712 + PathSize * sizeof(CXXBaseSpecifier*));
713 CXXFunctionalCastExpr *E =
714 new (Buffer) CXXFunctionalCastExpr(T, VK, Written, K, Op, PathSize, L, R);
715 if (PathSize) E->setCastPath(*BasePath);
716 return E;
717 }
718
719 CXXFunctionalCastExpr *
CreateEmpty(const ASTContext & C,unsigned PathSize)720 CXXFunctionalCastExpr::CreateEmpty(const ASTContext &C, unsigned PathSize) {
721 void *Buffer = C.Allocate(sizeof(CXXFunctionalCastExpr)
722 + PathSize * sizeof(CXXBaseSpecifier*));
723 return new (Buffer) CXXFunctionalCastExpr(EmptyShell(), PathSize);
724 }
725
getLocStart() const726 SourceLocation CXXFunctionalCastExpr::getLocStart() const {
727 return getTypeInfoAsWritten()->getTypeLoc().getLocStart();
728 }
729
getLocEnd() const730 SourceLocation CXXFunctionalCastExpr::getLocEnd() const {
731 return RParenLoc.isValid() ? RParenLoc : getSubExpr()->getLocEnd();
732 }
733
734 UserDefinedLiteral::LiteralOperatorKind
getLiteralOperatorKind() const735 UserDefinedLiteral::getLiteralOperatorKind() const {
736 if (getNumArgs() == 0)
737 return LOK_Template;
738 if (getNumArgs() == 2)
739 return LOK_String;
740
741 assert(getNumArgs() == 1 && "unexpected #args in literal operator call");
742 QualType ParamTy =
743 cast<FunctionDecl>(getCalleeDecl())->getParamDecl(0)->getType();
744 if (ParamTy->isPointerType())
745 return LOK_Raw;
746 if (ParamTy->isAnyCharacterType())
747 return LOK_Character;
748 if (ParamTy->isIntegerType())
749 return LOK_Integer;
750 if (ParamTy->isFloatingType())
751 return LOK_Floating;
752
753 llvm_unreachable("unknown kind of literal operator");
754 }
755
getCookedLiteral()756 Expr *UserDefinedLiteral::getCookedLiteral() {
757 #ifndef NDEBUG
758 LiteralOperatorKind LOK = getLiteralOperatorKind();
759 assert(LOK != LOK_Template && LOK != LOK_Raw && "not a cooked literal");
760 #endif
761 return getArg(0);
762 }
763
getUDSuffix() const764 const IdentifierInfo *UserDefinedLiteral::getUDSuffix() const {
765 return cast<FunctionDecl>(getCalleeDecl())->getLiteralIdentifier();
766 }
767
768 CXXDefaultArgExpr *
Create(const ASTContext & C,SourceLocation Loc,ParmVarDecl * Param,Expr * SubExpr)769 CXXDefaultArgExpr::Create(const ASTContext &C, SourceLocation Loc,
770 ParmVarDecl *Param, Expr *SubExpr) {
771 void *Mem = C.Allocate(sizeof(CXXDefaultArgExpr) + sizeof(Stmt *));
772 return new (Mem) CXXDefaultArgExpr(CXXDefaultArgExprClass, Loc, Param,
773 SubExpr);
774 }
775
CXXDefaultInitExpr(const ASTContext & C,SourceLocation Loc,FieldDecl * Field,QualType T)776 CXXDefaultInitExpr::CXXDefaultInitExpr(const ASTContext &C, SourceLocation Loc,
777 FieldDecl *Field, QualType T)
778 : Expr(CXXDefaultInitExprClass, T.getNonLValueExprType(C),
779 T->isLValueReferenceType() ? VK_LValue : T->isRValueReferenceType()
780 ? VK_XValue
781 : VK_RValue,
782 /*FIXME*/ OK_Ordinary, false, false, false, false),
783 Field(Field), Loc(Loc) {
784 assert(Field->hasInClassInitializer());
785 }
786
Create(const ASTContext & C,const CXXDestructorDecl * Destructor)787 CXXTemporary *CXXTemporary::Create(const ASTContext &C,
788 const CXXDestructorDecl *Destructor) {
789 return new (C) CXXTemporary(Destructor);
790 }
791
Create(const ASTContext & C,CXXTemporary * Temp,Expr * SubExpr)792 CXXBindTemporaryExpr *CXXBindTemporaryExpr::Create(const ASTContext &C,
793 CXXTemporary *Temp,
794 Expr* SubExpr) {
795 assert((SubExpr->getType()->isRecordType() ||
796 SubExpr->getType()->isArrayType()) &&
797 "Expression bound to a temporary must have record or array type!");
798
799 return new (C) CXXBindTemporaryExpr(Temp, SubExpr);
800 }
801
CXXTemporaryObjectExpr(const ASTContext & C,CXXConstructorDecl * Cons,TypeSourceInfo * Type,ArrayRef<Expr * > Args,SourceRange ParenOrBraceRange,bool HadMultipleCandidates,bool ListInitialization,bool StdInitListInitialization,bool ZeroInitialization)802 CXXTemporaryObjectExpr::CXXTemporaryObjectExpr(const ASTContext &C,
803 CXXConstructorDecl *Cons,
804 TypeSourceInfo *Type,
805 ArrayRef<Expr*> Args,
806 SourceRange ParenOrBraceRange,
807 bool HadMultipleCandidates,
808 bool ListInitialization,
809 bool StdInitListInitialization,
810 bool ZeroInitialization)
811 : CXXConstructExpr(C, CXXTemporaryObjectExprClass,
812 Type->getType().getNonReferenceType(),
813 Type->getTypeLoc().getBeginLoc(),
814 Cons, false, Args,
815 HadMultipleCandidates,
816 ListInitialization,
817 StdInitListInitialization,
818 ZeroInitialization,
819 CXXConstructExpr::CK_Complete, ParenOrBraceRange),
820 Type(Type) {
821 }
822
getLocStart() const823 SourceLocation CXXTemporaryObjectExpr::getLocStart() const {
824 return Type->getTypeLoc().getBeginLoc();
825 }
826
getLocEnd() const827 SourceLocation CXXTemporaryObjectExpr::getLocEnd() const {
828 SourceLocation Loc = getParenOrBraceRange().getEnd();
829 if (Loc.isInvalid() && getNumArgs())
830 Loc = getArg(getNumArgs()-1)->getLocEnd();
831 return Loc;
832 }
833
Create(const ASTContext & C,QualType T,SourceLocation Loc,CXXConstructorDecl * D,bool Elidable,ArrayRef<Expr * > Args,bool HadMultipleCandidates,bool ListInitialization,bool StdInitListInitialization,bool ZeroInitialization,ConstructionKind ConstructKind,SourceRange ParenOrBraceRange)834 CXXConstructExpr *CXXConstructExpr::Create(const ASTContext &C, QualType T,
835 SourceLocation Loc,
836 CXXConstructorDecl *D, bool Elidable,
837 ArrayRef<Expr*> Args,
838 bool HadMultipleCandidates,
839 bool ListInitialization,
840 bool StdInitListInitialization,
841 bool ZeroInitialization,
842 ConstructionKind ConstructKind,
843 SourceRange ParenOrBraceRange) {
844 return new (C) CXXConstructExpr(C, CXXConstructExprClass, T, Loc, D,
845 Elidable, Args,
846 HadMultipleCandidates, ListInitialization,
847 StdInitListInitialization,
848 ZeroInitialization, ConstructKind,
849 ParenOrBraceRange);
850 }
851
CXXConstructExpr(const ASTContext & C,StmtClass SC,QualType T,SourceLocation Loc,CXXConstructorDecl * D,bool elidable,ArrayRef<Expr * > args,bool HadMultipleCandidates,bool ListInitialization,bool StdInitListInitialization,bool ZeroInitialization,ConstructionKind ConstructKind,SourceRange ParenOrBraceRange)852 CXXConstructExpr::CXXConstructExpr(const ASTContext &C, StmtClass SC,
853 QualType T, SourceLocation Loc,
854 CXXConstructorDecl *D, bool elidable,
855 ArrayRef<Expr*> args,
856 bool HadMultipleCandidates,
857 bool ListInitialization,
858 bool StdInitListInitialization,
859 bool ZeroInitialization,
860 ConstructionKind ConstructKind,
861 SourceRange ParenOrBraceRange)
862 : Expr(SC, T, VK_RValue, OK_Ordinary,
863 T->isDependentType(), T->isDependentType(),
864 T->isInstantiationDependentType(),
865 T->containsUnexpandedParameterPack()),
866 Constructor(D), Loc(Loc), ParenOrBraceRange(ParenOrBraceRange),
867 NumArgs(args.size()),
868 Elidable(elidable), HadMultipleCandidates(HadMultipleCandidates),
869 ListInitialization(ListInitialization),
870 StdInitListInitialization(StdInitListInitialization),
871 ZeroInitialization(ZeroInitialization),
872 ConstructKind(ConstructKind), Args(nullptr)
873 {
874 if (NumArgs) {
875 Args = new (C) Stmt*[args.size()];
876
877 for (unsigned i = 0; i != args.size(); ++i) {
878 assert(args[i] && "NULL argument in CXXConstructExpr");
879
880 if (args[i]->isValueDependent())
881 ExprBits.ValueDependent = true;
882 if (args[i]->isInstantiationDependent())
883 ExprBits.InstantiationDependent = true;
884 if (args[i]->containsUnexpandedParameterPack())
885 ExprBits.ContainsUnexpandedParameterPack = true;
886
887 Args[i] = args[i];
888 }
889 }
890 }
891
LambdaCapture(SourceLocation Loc,bool Implicit,LambdaCaptureKind Kind,VarDecl * Var,SourceLocation EllipsisLoc)892 LambdaCapture::LambdaCapture(SourceLocation Loc, bool Implicit,
893 LambdaCaptureKind Kind, VarDecl *Var,
894 SourceLocation EllipsisLoc)
895 : DeclAndBits(Var, 0), Loc(Loc), EllipsisLoc(EllipsisLoc)
896 {
897 unsigned Bits = 0;
898 if (Implicit)
899 Bits |= Capture_Implicit;
900
901 switch (Kind) {
902 case LCK_This:
903 assert(!Var && "'this' capture cannot have a variable!");
904 break;
905
906 case LCK_ByCopy:
907 Bits |= Capture_ByCopy;
908 // Fall through
909 case LCK_ByRef:
910 assert(Var && "capture must have a variable!");
911 break;
912 case LCK_VLAType:
913 assert(!Var && "VLA type capture cannot have a variable!");
914 Bits |= Capture_ByCopy;
915 break;
916 }
917 DeclAndBits.setInt(Bits);
918 }
919
getCaptureKind() const920 LambdaCaptureKind LambdaCapture::getCaptureKind() const {
921 Decl *D = DeclAndBits.getPointer();
922 bool CapByCopy = DeclAndBits.getInt() & Capture_ByCopy;
923 if (!D)
924 return CapByCopy ? LCK_VLAType : LCK_This;
925
926 return CapByCopy ? LCK_ByCopy : LCK_ByRef;
927 }
928
LambdaExpr(QualType T,SourceRange IntroducerRange,LambdaCaptureDefault CaptureDefault,SourceLocation CaptureDefaultLoc,ArrayRef<Capture> Captures,bool ExplicitParams,bool ExplicitResultType,ArrayRef<Expr * > CaptureInits,ArrayRef<VarDecl * > ArrayIndexVars,ArrayRef<unsigned> ArrayIndexStarts,SourceLocation ClosingBrace,bool ContainsUnexpandedParameterPack)929 LambdaExpr::LambdaExpr(QualType T,
930 SourceRange IntroducerRange,
931 LambdaCaptureDefault CaptureDefault,
932 SourceLocation CaptureDefaultLoc,
933 ArrayRef<Capture> Captures,
934 bool ExplicitParams,
935 bool ExplicitResultType,
936 ArrayRef<Expr *> CaptureInits,
937 ArrayRef<VarDecl *> ArrayIndexVars,
938 ArrayRef<unsigned> ArrayIndexStarts,
939 SourceLocation ClosingBrace,
940 bool ContainsUnexpandedParameterPack)
941 : Expr(LambdaExprClass, T, VK_RValue, OK_Ordinary,
942 T->isDependentType(), T->isDependentType(), T->isDependentType(),
943 ContainsUnexpandedParameterPack),
944 IntroducerRange(IntroducerRange),
945 CaptureDefaultLoc(CaptureDefaultLoc),
946 NumCaptures(Captures.size()),
947 CaptureDefault(CaptureDefault),
948 ExplicitParams(ExplicitParams),
949 ExplicitResultType(ExplicitResultType),
950 ClosingBrace(ClosingBrace)
951 {
952 assert(CaptureInits.size() == Captures.size() && "Wrong number of arguments");
953 CXXRecordDecl *Class = getLambdaClass();
954 CXXRecordDecl::LambdaDefinitionData &Data = Class->getLambdaData();
955
956 // FIXME: Propagate "has unexpanded parameter pack" bit.
957
958 // Copy captures.
959 const ASTContext &Context = Class->getASTContext();
960 Data.NumCaptures = NumCaptures;
961 Data.NumExplicitCaptures = 0;
962 Data.Captures = (Capture *)Context.Allocate(sizeof(Capture) * NumCaptures);
963 Capture *ToCapture = Data.Captures;
964 for (unsigned I = 0, N = Captures.size(); I != N; ++I) {
965 if (Captures[I].isExplicit())
966 ++Data.NumExplicitCaptures;
967
968 *ToCapture++ = Captures[I];
969 }
970
971 // Copy initialization expressions for the non-static data members.
972 Stmt **Stored = getStoredStmts();
973 for (unsigned I = 0, N = CaptureInits.size(); I != N; ++I)
974 *Stored++ = CaptureInits[I];
975
976 // Copy the body of the lambda.
977 *Stored++ = getCallOperator()->getBody();
978
979 // Copy the array index variables, if any.
980 HasArrayIndexVars = !ArrayIndexVars.empty();
981 if (HasArrayIndexVars) {
982 assert(ArrayIndexStarts.size() == NumCaptures);
983 memcpy(getArrayIndexVars(), ArrayIndexVars.data(),
984 sizeof(VarDecl *) * ArrayIndexVars.size());
985 memcpy(getArrayIndexStarts(), ArrayIndexStarts.data(),
986 sizeof(unsigned) * Captures.size());
987 getArrayIndexStarts()[Captures.size()] = ArrayIndexVars.size();
988 }
989 }
990
Create(const ASTContext & Context,CXXRecordDecl * Class,SourceRange IntroducerRange,LambdaCaptureDefault CaptureDefault,SourceLocation CaptureDefaultLoc,ArrayRef<Capture> Captures,bool ExplicitParams,bool ExplicitResultType,ArrayRef<Expr * > CaptureInits,ArrayRef<VarDecl * > ArrayIndexVars,ArrayRef<unsigned> ArrayIndexStarts,SourceLocation ClosingBrace,bool ContainsUnexpandedParameterPack)991 LambdaExpr *LambdaExpr::Create(const ASTContext &Context,
992 CXXRecordDecl *Class,
993 SourceRange IntroducerRange,
994 LambdaCaptureDefault CaptureDefault,
995 SourceLocation CaptureDefaultLoc,
996 ArrayRef<Capture> Captures,
997 bool ExplicitParams,
998 bool ExplicitResultType,
999 ArrayRef<Expr *> CaptureInits,
1000 ArrayRef<VarDecl *> ArrayIndexVars,
1001 ArrayRef<unsigned> ArrayIndexStarts,
1002 SourceLocation ClosingBrace,
1003 bool ContainsUnexpandedParameterPack) {
1004 // Determine the type of the expression (i.e., the type of the
1005 // function object we're creating).
1006 QualType T = Context.getTypeDeclType(Class);
1007
1008 unsigned Size = sizeof(LambdaExpr) + sizeof(Stmt *) * (Captures.size() + 1);
1009 if (!ArrayIndexVars.empty()) {
1010 Size += sizeof(unsigned) * (Captures.size() + 1);
1011 // Realign for following VarDecl array.
1012 Size = llvm::RoundUpToAlignment(Size, llvm::alignOf<VarDecl*>());
1013 Size += sizeof(VarDecl *) * ArrayIndexVars.size();
1014 }
1015 void *Mem = Context.Allocate(Size);
1016 return new (Mem) LambdaExpr(T, IntroducerRange,
1017 CaptureDefault, CaptureDefaultLoc, Captures,
1018 ExplicitParams, ExplicitResultType,
1019 CaptureInits, ArrayIndexVars, ArrayIndexStarts,
1020 ClosingBrace, ContainsUnexpandedParameterPack);
1021 }
1022
CreateDeserialized(const ASTContext & C,unsigned NumCaptures,unsigned NumArrayIndexVars)1023 LambdaExpr *LambdaExpr::CreateDeserialized(const ASTContext &C,
1024 unsigned NumCaptures,
1025 unsigned NumArrayIndexVars) {
1026 unsigned Size = sizeof(LambdaExpr) + sizeof(Stmt *) * (NumCaptures + 1);
1027 if (NumArrayIndexVars)
1028 Size += sizeof(VarDecl) * NumArrayIndexVars
1029 + sizeof(unsigned) * (NumCaptures + 1);
1030 void *Mem = C.Allocate(Size);
1031 return new (Mem) LambdaExpr(EmptyShell(), NumCaptures, NumArrayIndexVars > 0);
1032 }
1033
capture_begin() const1034 LambdaExpr::capture_iterator LambdaExpr::capture_begin() const {
1035 return getLambdaClass()->getLambdaData().Captures;
1036 }
1037
capture_end() const1038 LambdaExpr::capture_iterator LambdaExpr::capture_end() const {
1039 return capture_begin() + NumCaptures;
1040 }
1041
captures() const1042 LambdaExpr::capture_range LambdaExpr::captures() const {
1043 return capture_range(capture_begin(), capture_end());
1044 }
1045
explicit_capture_begin() const1046 LambdaExpr::capture_iterator LambdaExpr::explicit_capture_begin() const {
1047 return capture_begin();
1048 }
1049
explicit_capture_end() const1050 LambdaExpr::capture_iterator LambdaExpr::explicit_capture_end() const {
1051 struct CXXRecordDecl::LambdaDefinitionData &Data
1052 = getLambdaClass()->getLambdaData();
1053 return Data.Captures + Data.NumExplicitCaptures;
1054 }
1055
explicit_captures() const1056 LambdaExpr::capture_range LambdaExpr::explicit_captures() const {
1057 return capture_range(explicit_capture_begin(), explicit_capture_end());
1058 }
1059
implicit_capture_begin() const1060 LambdaExpr::capture_iterator LambdaExpr::implicit_capture_begin() const {
1061 return explicit_capture_end();
1062 }
1063
implicit_capture_end() const1064 LambdaExpr::capture_iterator LambdaExpr::implicit_capture_end() const {
1065 return capture_end();
1066 }
1067
implicit_captures() const1068 LambdaExpr::capture_range LambdaExpr::implicit_captures() const {
1069 return capture_range(implicit_capture_begin(), implicit_capture_end());
1070 }
1071
1072 ArrayRef<VarDecl *>
getCaptureInitIndexVars(capture_init_iterator Iter) const1073 LambdaExpr::getCaptureInitIndexVars(capture_init_iterator Iter) const {
1074 assert(HasArrayIndexVars && "No array index-var data?");
1075
1076 unsigned Index = Iter - capture_init_begin();
1077 assert(Index < getLambdaClass()->getLambdaData().NumCaptures &&
1078 "Capture index out-of-range");
1079 VarDecl **IndexVars = getArrayIndexVars();
1080 unsigned *IndexStarts = getArrayIndexStarts();
1081 return llvm::makeArrayRef(IndexVars + IndexStarts[Index],
1082 IndexVars + IndexStarts[Index + 1]);
1083 }
1084
getLambdaClass() const1085 CXXRecordDecl *LambdaExpr::getLambdaClass() const {
1086 return getType()->getAsCXXRecordDecl();
1087 }
1088
getCallOperator() const1089 CXXMethodDecl *LambdaExpr::getCallOperator() const {
1090 CXXRecordDecl *Record = getLambdaClass();
1091 return Record->getLambdaCallOperator();
1092 }
1093
getTemplateParameterList() const1094 TemplateParameterList *LambdaExpr::getTemplateParameterList() const {
1095 CXXRecordDecl *Record = getLambdaClass();
1096 return Record->getGenericLambdaTemplateParameterList();
1097
1098 }
1099
getBody() const1100 CompoundStmt *LambdaExpr::getBody() const {
1101 if (!getStoredStmts()[NumCaptures])
1102 getStoredStmts()[NumCaptures] = getCallOperator()->getBody();
1103
1104 return reinterpret_cast<CompoundStmt *>(getStoredStmts()[NumCaptures]);
1105 }
1106
isMutable() const1107 bool LambdaExpr::isMutable() const {
1108 return !getCallOperator()->isConst();
1109 }
1110
ExprWithCleanups(Expr * subexpr,ArrayRef<CleanupObject> objects)1111 ExprWithCleanups::ExprWithCleanups(Expr *subexpr,
1112 ArrayRef<CleanupObject> objects)
1113 : Expr(ExprWithCleanupsClass, subexpr->getType(),
1114 subexpr->getValueKind(), subexpr->getObjectKind(),
1115 subexpr->isTypeDependent(), subexpr->isValueDependent(),
1116 subexpr->isInstantiationDependent(),
1117 subexpr->containsUnexpandedParameterPack()),
1118 SubExpr(subexpr) {
1119 ExprWithCleanupsBits.NumObjects = objects.size();
1120 for (unsigned i = 0, e = objects.size(); i != e; ++i)
1121 getObjectsBuffer()[i] = objects[i];
1122 }
1123
Create(const ASTContext & C,Expr * subexpr,ArrayRef<CleanupObject> objects)1124 ExprWithCleanups *ExprWithCleanups::Create(const ASTContext &C, Expr *subexpr,
1125 ArrayRef<CleanupObject> objects) {
1126 size_t size = sizeof(ExprWithCleanups)
1127 + objects.size() * sizeof(CleanupObject);
1128 void *buffer = C.Allocate(size, llvm::alignOf<ExprWithCleanups>());
1129 return new (buffer) ExprWithCleanups(subexpr, objects);
1130 }
1131
ExprWithCleanups(EmptyShell empty,unsigned numObjects)1132 ExprWithCleanups::ExprWithCleanups(EmptyShell empty, unsigned numObjects)
1133 : Expr(ExprWithCleanupsClass, empty) {
1134 ExprWithCleanupsBits.NumObjects = numObjects;
1135 }
1136
Create(const ASTContext & C,EmptyShell empty,unsigned numObjects)1137 ExprWithCleanups *ExprWithCleanups::Create(const ASTContext &C,
1138 EmptyShell empty,
1139 unsigned numObjects) {
1140 size_t size = sizeof(ExprWithCleanups) + numObjects * sizeof(CleanupObject);
1141 void *buffer = C.Allocate(size, llvm::alignOf<ExprWithCleanups>());
1142 return new (buffer) ExprWithCleanups(empty, numObjects);
1143 }
1144
CXXUnresolvedConstructExpr(TypeSourceInfo * Type,SourceLocation LParenLoc,ArrayRef<Expr * > Args,SourceLocation RParenLoc)1145 CXXUnresolvedConstructExpr::CXXUnresolvedConstructExpr(TypeSourceInfo *Type,
1146 SourceLocation LParenLoc,
1147 ArrayRef<Expr*> Args,
1148 SourceLocation RParenLoc)
1149 : Expr(CXXUnresolvedConstructExprClass,
1150 Type->getType().getNonReferenceType(),
1151 (Type->getType()->isLValueReferenceType() ? VK_LValue
1152 :Type->getType()->isRValueReferenceType()? VK_XValue
1153 :VK_RValue),
1154 OK_Ordinary,
1155 Type->getType()->isDependentType(), true, true,
1156 Type->getType()->containsUnexpandedParameterPack()),
1157 Type(Type),
1158 LParenLoc(LParenLoc),
1159 RParenLoc(RParenLoc),
1160 NumArgs(Args.size()) {
1161 Stmt **StoredArgs = reinterpret_cast<Stmt **>(this + 1);
1162 for (unsigned I = 0; I != Args.size(); ++I) {
1163 if (Args[I]->containsUnexpandedParameterPack())
1164 ExprBits.ContainsUnexpandedParameterPack = true;
1165
1166 StoredArgs[I] = Args[I];
1167 }
1168 }
1169
1170 CXXUnresolvedConstructExpr *
Create(const ASTContext & C,TypeSourceInfo * Type,SourceLocation LParenLoc,ArrayRef<Expr * > Args,SourceLocation RParenLoc)1171 CXXUnresolvedConstructExpr::Create(const ASTContext &C,
1172 TypeSourceInfo *Type,
1173 SourceLocation LParenLoc,
1174 ArrayRef<Expr*> Args,
1175 SourceLocation RParenLoc) {
1176 void *Mem = C.Allocate(sizeof(CXXUnresolvedConstructExpr) +
1177 sizeof(Expr *) * Args.size());
1178 return new (Mem) CXXUnresolvedConstructExpr(Type, LParenLoc, Args, RParenLoc);
1179 }
1180
1181 CXXUnresolvedConstructExpr *
CreateEmpty(const ASTContext & C,unsigned NumArgs)1182 CXXUnresolvedConstructExpr::CreateEmpty(const ASTContext &C, unsigned NumArgs) {
1183 Stmt::EmptyShell Empty;
1184 void *Mem = C.Allocate(sizeof(CXXUnresolvedConstructExpr) +
1185 sizeof(Expr *) * NumArgs);
1186 return new (Mem) CXXUnresolvedConstructExpr(Empty, NumArgs);
1187 }
1188
getLocStart() const1189 SourceLocation CXXUnresolvedConstructExpr::getLocStart() const {
1190 return Type->getTypeLoc().getBeginLoc();
1191 }
1192
CXXDependentScopeMemberExpr(const ASTContext & C,Expr * Base,QualType BaseType,bool IsArrow,SourceLocation OperatorLoc,NestedNameSpecifierLoc QualifierLoc,SourceLocation TemplateKWLoc,NamedDecl * FirstQualifierFoundInScope,DeclarationNameInfo MemberNameInfo,const TemplateArgumentListInfo * TemplateArgs)1193 CXXDependentScopeMemberExpr::CXXDependentScopeMemberExpr(const ASTContext &C,
1194 Expr *Base, QualType BaseType,
1195 bool IsArrow,
1196 SourceLocation OperatorLoc,
1197 NestedNameSpecifierLoc QualifierLoc,
1198 SourceLocation TemplateKWLoc,
1199 NamedDecl *FirstQualifierFoundInScope,
1200 DeclarationNameInfo MemberNameInfo,
1201 const TemplateArgumentListInfo *TemplateArgs)
1202 : Expr(CXXDependentScopeMemberExprClass, C.DependentTy,
1203 VK_LValue, OK_Ordinary, true, true, true,
1204 ((Base && Base->containsUnexpandedParameterPack()) ||
1205 (QualifierLoc &&
1206 QualifierLoc.getNestedNameSpecifier()
1207 ->containsUnexpandedParameterPack()) ||
1208 MemberNameInfo.containsUnexpandedParameterPack())),
1209 Base(Base), BaseType(BaseType), IsArrow(IsArrow),
1210 HasTemplateKWAndArgsInfo(TemplateArgs != nullptr ||
1211 TemplateKWLoc.isValid()),
1212 OperatorLoc(OperatorLoc), QualifierLoc(QualifierLoc),
1213 FirstQualifierFoundInScope(FirstQualifierFoundInScope),
1214 MemberNameInfo(MemberNameInfo) {
1215 if (TemplateArgs) {
1216 bool Dependent = true;
1217 bool InstantiationDependent = true;
1218 bool ContainsUnexpandedParameterPack = false;
1219 getTemplateKWAndArgsInfo()->initializeFrom(TemplateKWLoc, *TemplateArgs,
1220 Dependent,
1221 InstantiationDependent,
1222 ContainsUnexpandedParameterPack);
1223 if (ContainsUnexpandedParameterPack)
1224 ExprBits.ContainsUnexpandedParameterPack = true;
1225 } else if (TemplateKWLoc.isValid()) {
1226 getTemplateKWAndArgsInfo()->initializeFrom(TemplateKWLoc);
1227 }
1228 }
1229
CXXDependentScopeMemberExpr(const ASTContext & C,Expr * Base,QualType BaseType,bool IsArrow,SourceLocation OperatorLoc,NestedNameSpecifierLoc QualifierLoc,NamedDecl * FirstQualifierFoundInScope,DeclarationNameInfo MemberNameInfo)1230 CXXDependentScopeMemberExpr::CXXDependentScopeMemberExpr(const ASTContext &C,
1231 Expr *Base, QualType BaseType,
1232 bool IsArrow,
1233 SourceLocation OperatorLoc,
1234 NestedNameSpecifierLoc QualifierLoc,
1235 NamedDecl *FirstQualifierFoundInScope,
1236 DeclarationNameInfo MemberNameInfo)
1237 : Expr(CXXDependentScopeMemberExprClass, C.DependentTy,
1238 VK_LValue, OK_Ordinary, true, true, true,
1239 ((Base && Base->containsUnexpandedParameterPack()) ||
1240 (QualifierLoc &&
1241 QualifierLoc.getNestedNameSpecifier()->
1242 containsUnexpandedParameterPack()) ||
1243 MemberNameInfo.containsUnexpandedParameterPack())),
1244 Base(Base), BaseType(BaseType), IsArrow(IsArrow),
1245 HasTemplateKWAndArgsInfo(false),
1246 OperatorLoc(OperatorLoc), QualifierLoc(QualifierLoc),
1247 FirstQualifierFoundInScope(FirstQualifierFoundInScope),
1248 MemberNameInfo(MemberNameInfo) { }
1249
1250 CXXDependentScopeMemberExpr *
Create(const ASTContext & C,Expr * Base,QualType BaseType,bool IsArrow,SourceLocation OperatorLoc,NestedNameSpecifierLoc QualifierLoc,SourceLocation TemplateKWLoc,NamedDecl * FirstQualifierFoundInScope,DeclarationNameInfo MemberNameInfo,const TemplateArgumentListInfo * TemplateArgs)1251 CXXDependentScopeMemberExpr::Create(const ASTContext &C,
1252 Expr *Base, QualType BaseType, bool IsArrow,
1253 SourceLocation OperatorLoc,
1254 NestedNameSpecifierLoc QualifierLoc,
1255 SourceLocation TemplateKWLoc,
1256 NamedDecl *FirstQualifierFoundInScope,
1257 DeclarationNameInfo MemberNameInfo,
1258 const TemplateArgumentListInfo *TemplateArgs) {
1259 if (!TemplateArgs && !TemplateKWLoc.isValid())
1260 return new (C) CXXDependentScopeMemberExpr(C, Base, BaseType,
1261 IsArrow, OperatorLoc,
1262 QualifierLoc,
1263 FirstQualifierFoundInScope,
1264 MemberNameInfo);
1265
1266 unsigned NumTemplateArgs = TemplateArgs ? TemplateArgs->size() : 0;
1267 std::size_t size = sizeof(CXXDependentScopeMemberExpr)
1268 + ASTTemplateKWAndArgsInfo::sizeFor(NumTemplateArgs);
1269
1270 void *Mem = C.Allocate(size, llvm::alignOf<CXXDependentScopeMemberExpr>());
1271 return new (Mem) CXXDependentScopeMemberExpr(C, Base, BaseType,
1272 IsArrow, OperatorLoc,
1273 QualifierLoc,
1274 TemplateKWLoc,
1275 FirstQualifierFoundInScope,
1276 MemberNameInfo, TemplateArgs);
1277 }
1278
1279 CXXDependentScopeMemberExpr *
CreateEmpty(const ASTContext & C,bool HasTemplateKWAndArgsInfo,unsigned NumTemplateArgs)1280 CXXDependentScopeMemberExpr::CreateEmpty(const ASTContext &C,
1281 bool HasTemplateKWAndArgsInfo,
1282 unsigned NumTemplateArgs) {
1283 if (!HasTemplateKWAndArgsInfo)
1284 return new (C) CXXDependentScopeMemberExpr(C, nullptr, QualType(),
1285 0, SourceLocation(),
1286 NestedNameSpecifierLoc(),
1287 nullptr, DeclarationNameInfo());
1288
1289 std::size_t size = sizeof(CXXDependentScopeMemberExpr) +
1290 ASTTemplateKWAndArgsInfo::sizeFor(NumTemplateArgs);
1291 void *Mem = C.Allocate(size, llvm::alignOf<CXXDependentScopeMemberExpr>());
1292 CXXDependentScopeMemberExpr *E
1293 = new (Mem) CXXDependentScopeMemberExpr(C, nullptr, QualType(),
1294 0, SourceLocation(),
1295 NestedNameSpecifierLoc(),
1296 SourceLocation(), nullptr,
1297 DeclarationNameInfo(), nullptr);
1298 E->HasTemplateKWAndArgsInfo = true;
1299 return E;
1300 }
1301
isImplicitAccess() const1302 bool CXXDependentScopeMemberExpr::isImplicitAccess() const {
1303 if (!Base)
1304 return true;
1305
1306 return cast<Expr>(Base)->isImplicitCXXThis();
1307 }
1308
hasOnlyNonStaticMemberFunctions(UnresolvedSetIterator begin,UnresolvedSetIterator end)1309 static bool hasOnlyNonStaticMemberFunctions(UnresolvedSetIterator begin,
1310 UnresolvedSetIterator end) {
1311 do {
1312 NamedDecl *decl = *begin;
1313 if (isa<UnresolvedUsingValueDecl>(decl))
1314 return false;
1315
1316 // Unresolved member expressions should only contain methods and
1317 // method templates.
1318 if (cast<CXXMethodDecl>(decl->getUnderlyingDecl()->getAsFunction())
1319 ->isStatic())
1320 return false;
1321 } while (++begin != end);
1322
1323 return true;
1324 }
1325
UnresolvedMemberExpr(const ASTContext & C,bool HasUnresolvedUsing,Expr * Base,QualType BaseType,bool IsArrow,SourceLocation OperatorLoc,NestedNameSpecifierLoc QualifierLoc,SourceLocation TemplateKWLoc,const DeclarationNameInfo & MemberNameInfo,const TemplateArgumentListInfo * TemplateArgs,UnresolvedSetIterator Begin,UnresolvedSetIterator End)1326 UnresolvedMemberExpr::UnresolvedMemberExpr(const ASTContext &C,
1327 bool HasUnresolvedUsing,
1328 Expr *Base, QualType BaseType,
1329 bool IsArrow,
1330 SourceLocation OperatorLoc,
1331 NestedNameSpecifierLoc QualifierLoc,
1332 SourceLocation TemplateKWLoc,
1333 const DeclarationNameInfo &MemberNameInfo,
1334 const TemplateArgumentListInfo *TemplateArgs,
1335 UnresolvedSetIterator Begin,
1336 UnresolvedSetIterator End)
1337 : OverloadExpr(UnresolvedMemberExprClass, C, QualifierLoc, TemplateKWLoc,
1338 MemberNameInfo, TemplateArgs, Begin, End,
1339 // Dependent
1340 ((Base && Base->isTypeDependent()) ||
1341 BaseType->isDependentType()),
1342 ((Base && Base->isInstantiationDependent()) ||
1343 BaseType->isInstantiationDependentType()),
1344 // Contains unexpanded parameter pack
1345 ((Base && Base->containsUnexpandedParameterPack()) ||
1346 BaseType->containsUnexpandedParameterPack())),
1347 IsArrow(IsArrow), HasUnresolvedUsing(HasUnresolvedUsing),
1348 Base(Base), BaseType(BaseType), OperatorLoc(OperatorLoc) {
1349
1350 // Check whether all of the members are non-static member functions,
1351 // and if so, mark give this bound-member type instead of overload type.
1352 if (hasOnlyNonStaticMemberFunctions(Begin, End))
1353 setType(C.BoundMemberTy);
1354 }
1355
isImplicitAccess() const1356 bool UnresolvedMemberExpr::isImplicitAccess() const {
1357 if (!Base)
1358 return true;
1359
1360 return cast<Expr>(Base)->isImplicitCXXThis();
1361 }
1362
1363 UnresolvedMemberExpr *
Create(const ASTContext & C,bool HasUnresolvedUsing,Expr * Base,QualType BaseType,bool IsArrow,SourceLocation OperatorLoc,NestedNameSpecifierLoc QualifierLoc,SourceLocation TemplateKWLoc,const DeclarationNameInfo & MemberNameInfo,const TemplateArgumentListInfo * TemplateArgs,UnresolvedSetIterator Begin,UnresolvedSetIterator End)1364 UnresolvedMemberExpr::Create(const ASTContext &C, bool HasUnresolvedUsing,
1365 Expr *Base, QualType BaseType, bool IsArrow,
1366 SourceLocation OperatorLoc,
1367 NestedNameSpecifierLoc QualifierLoc,
1368 SourceLocation TemplateKWLoc,
1369 const DeclarationNameInfo &MemberNameInfo,
1370 const TemplateArgumentListInfo *TemplateArgs,
1371 UnresolvedSetIterator Begin,
1372 UnresolvedSetIterator End) {
1373 std::size_t size = sizeof(UnresolvedMemberExpr);
1374 if (TemplateArgs)
1375 size += ASTTemplateKWAndArgsInfo::sizeFor(TemplateArgs->size());
1376 else if (TemplateKWLoc.isValid())
1377 size += ASTTemplateKWAndArgsInfo::sizeFor(0);
1378
1379 void *Mem = C.Allocate(size, llvm::alignOf<UnresolvedMemberExpr>());
1380 return new (Mem) UnresolvedMemberExpr(C,
1381 HasUnresolvedUsing, Base, BaseType,
1382 IsArrow, OperatorLoc, QualifierLoc, TemplateKWLoc,
1383 MemberNameInfo, TemplateArgs, Begin, End);
1384 }
1385
1386 UnresolvedMemberExpr *
CreateEmpty(const ASTContext & C,bool HasTemplateKWAndArgsInfo,unsigned NumTemplateArgs)1387 UnresolvedMemberExpr::CreateEmpty(const ASTContext &C,
1388 bool HasTemplateKWAndArgsInfo,
1389 unsigned NumTemplateArgs) {
1390 std::size_t size = sizeof(UnresolvedMemberExpr);
1391 if (HasTemplateKWAndArgsInfo)
1392 size += ASTTemplateKWAndArgsInfo::sizeFor(NumTemplateArgs);
1393
1394 void *Mem = C.Allocate(size, llvm::alignOf<UnresolvedMemberExpr>());
1395 UnresolvedMemberExpr *E = new (Mem) UnresolvedMemberExpr(EmptyShell());
1396 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
1397 return E;
1398 }
1399
getNamingClass() const1400 CXXRecordDecl *UnresolvedMemberExpr::getNamingClass() const {
1401 // Unlike for UnresolvedLookupExpr, it is very easy to re-derive this.
1402
1403 // If there was a nested name specifier, it names the naming class.
1404 // It can't be dependent: after all, we were actually able to do the
1405 // lookup.
1406 CXXRecordDecl *Record = nullptr;
1407 auto *NNS = getQualifier();
1408 if (NNS && NNS->getKind() != NestedNameSpecifier::Super) {
1409 const Type *T = getQualifier()->getAsType();
1410 assert(T && "qualifier in member expression does not name type");
1411 Record = T->getAsCXXRecordDecl();
1412 assert(Record && "qualifier in member expression does not name record");
1413 }
1414 // Otherwise the naming class must have been the base class.
1415 else {
1416 QualType BaseType = getBaseType().getNonReferenceType();
1417 if (isArrow()) {
1418 const PointerType *PT = BaseType->getAs<PointerType>();
1419 assert(PT && "base of arrow member access is not pointer");
1420 BaseType = PT->getPointeeType();
1421 }
1422
1423 Record = BaseType->getAsCXXRecordDecl();
1424 assert(Record && "base of member expression does not name record");
1425 }
1426
1427 return Record;
1428 }
1429
1430 SubstNonTypeTemplateParmPackExpr::
SubstNonTypeTemplateParmPackExpr(QualType T,NonTypeTemplateParmDecl * Param,SourceLocation NameLoc,const TemplateArgument & ArgPack)1431 SubstNonTypeTemplateParmPackExpr(QualType T,
1432 NonTypeTemplateParmDecl *Param,
1433 SourceLocation NameLoc,
1434 const TemplateArgument &ArgPack)
1435 : Expr(SubstNonTypeTemplateParmPackExprClass, T, VK_RValue, OK_Ordinary,
1436 true, true, true, true),
1437 Param(Param), Arguments(ArgPack.pack_begin()),
1438 NumArguments(ArgPack.pack_size()), NameLoc(NameLoc) { }
1439
getArgumentPack() const1440 TemplateArgument SubstNonTypeTemplateParmPackExpr::getArgumentPack() const {
1441 return TemplateArgument(Arguments, NumArguments);
1442 }
1443
FunctionParmPackExpr(QualType T,ParmVarDecl * ParamPack,SourceLocation NameLoc,unsigned NumParams,Decl * const * Params)1444 FunctionParmPackExpr::FunctionParmPackExpr(QualType T, ParmVarDecl *ParamPack,
1445 SourceLocation NameLoc,
1446 unsigned NumParams,
1447 Decl * const *Params)
1448 : Expr(FunctionParmPackExprClass, T, VK_LValue, OK_Ordinary,
1449 true, true, true, true),
1450 ParamPack(ParamPack), NameLoc(NameLoc), NumParameters(NumParams) {
1451 if (Params)
1452 std::uninitialized_copy(Params, Params + NumParams,
1453 reinterpret_cast<Decl**>(this+1));
1454 }
1455
1456 FunctionParmPackExpr *
Create(const ASTContext & Context,QualType T,ParmVarDecl * ParamPack,SourceLocation NameLoc,ArrayRef<Decl * > Params)1457 FunctionParmPackExpr::Create(const ASTContext &Context, QualType T,
1458 ParmVarDecl *ParamPack, SourceLocation NameLoc,
1459 ArrayRef<Decl *> Params) {
1460 return new (Context.Allocate(sizeof(FunctionParmPackExpr) +
1461 sizeof(ParmVarDecl*) * Params.size()))
1462 FunctionParmPackExpr(T, ParamPack, NameLoc, Params.size(), Params.data());
1463 }
1464
1465 FunctionParmPackExpr *
CreateEmpty(const ASTContext & Context,unsigned NumParams)1466 FunctionParmPackExpr::CreateEmpty(const ASTContext &Context,
1467 unsigned NumParams) {
1468 return new (Context.Allocate(sizeof(FunctionParmPackExpr) +
1469 sizeof(ParmVarDecl*) * NumParams))
1470 FunctionParmPackExpr(QualType(), nullptr, SourceLocation(), 0, nullptr);
1471 }
1472
setExtendingDecl(const ValueDecl * ExtendedBy,unsigned ManglingNumber)1473 void MaterializeTemporaryExpr::setExtendingDecl(const ValueDecl *ExtendedBy,
1474 unsigned ManglingNumber) {
1475 // We only need extra state if we have to remember more than just the Stmt.
1476 if (!ExtendedBy)
1477 return;
1478
1479 // We may need to allocate extra storage for the mangling number and the
1480 // extended-by ValueDecl.
1481 if (!State.is<ExtraState *>()) {
1482 auto ES = new (ExtendedBy->getASTContext()) ExtraState;
1483 ES->Temporary = State.get<Stmt *>();
1484 State = ES;
1485 }
1486
1487 auto ES = State.get<ExtraState *>();
1488 ES->ExtendingDecl = ExtendedBy;
1489 ES->ManglingNumber = ManglingNumber;
1490 }
1491
TypeTraitExpr(QualType T,SourceLocation Loc,TypeTrait Kind,ArrayRef<TypeSourceInfo * > Args,SourceLocation RParenLoc,bool Value)1492 TypeTraitExpr::TypeTraitExpr(QualType T, SourceLocation Loc, TypeTrait Kind,
1493 ArrayRef<TypeSourceInfo *> Args,
1494 SourceLocation RParenLoc,
1495 bool Value)
1496 : Expr(TypeTraitExprClass, T, VK_RValue, OK_Ordinary,
1497 /*TypeDependent=*/false,
1498 /*ValueDependent=*/false,
1499 /*InstantiationDependent=*/false,
1500 /*ContainsUnexpandedParameterPack=*/false),
1501 Loc(Loc), RParenLoc(RParenLoc)
1502 {
1503 TypeTraitExprBits.Kind = Kind;
1504 TypeTraitExprBits.Value = Value;
1505 TypeTraitExprBits.NumArgs = Args.size();
1506
1507 TypeSourceInfo **ToArgs = getTypeSourceInfos();
1508
1509 for (unsigned I = 0, N = Args.size(); I != N; ++I) {
1510 if (Args[I]->getType()->isDependentType())
1511 setValueDependent(true);
1512 if (Args[I]->getType()->isInstantiationDependentType())
1513 setInstantiationDependent(true);
1514 if (Args[I]->getType()->containsUnexpandedParameterPack())
1515 setContainsUnexpandedParameterPack(true);
1516
1517 ToArgs[I] = Args[I];
1518 }
1519 }
1520
Create(const ASTContext & C,QualType T,SourceLocation Loc,TypeTrait Kind,ArrayRef<TypeSourceInfo * > Args,SourceLocation RParenLoc,bool Value)1521 TypeTraitExpr *TypeTraitExpr::Create(const ASTContext &C, QualType T,
1522 SourceLocation Loc,
1523 TypeTrait Kind,
1524 ArrayRef<TypeSourceInfo *> Args,
1525 SourceLocation RParenLoc,
1526 bool Value) {
1527 unsigned Size = sizeof(TypeTraitExpr) + sizeof(TypeSourceInfo*) * Args.size();
1528 void *Mem = C.Allocate(Size);
1529 return new (Mem) TypeTraitExpr(T, Loc, Kind, Args, RParenLoc, Value);
1530 }
1531
CreateDeserialized(const ASTContext & C,unsigned NumArgs)1532 TypeTraitExpr *TypeTraitExpr::CreateDeserialized(const ASTContext &C,
1533 unsigned NumArgs) {
1534 unsigned Size = sizeof(TypeTraitExpr) + sizeof(TypeSourceInfo*) * NumArgs;
1535 void *Mem = C.Allocate(Size);
1536 return new (Mem) TypeTraitExpr(EmptyShell());
1537 }
1538
anchor()1539 void ArrayTypeTraitExpr::anchor() { }
1540