Bug Summary

File:tools/clang/lib/AST/ExprCXX.cpp
Warning:line 1536, column 19
Access to field 'Temporary' results in a dereference of a null pointer (loaded from variable 'ES')

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name ExprCXX.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mthread-model posix -relaxed-aliasing -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -momit-leaf-frame-pointer -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-8/lib/clang/8.0.0 -D CLANG_VENDOR="Debian " -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-8~svn350071/tools/clang/include -I /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/include -I /build/llvm-toolchain-snapshot-8~svn350071/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/include/clang/8.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-8/lib/clang/8.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/tools/clang/lib/AST -fdebug-prefix-map=/build/llvm-toolchain-snapshot-8~svn350071=. -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -stack-protector 2 -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2018-12-27-042839-1215-1 -x c++ /build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp -faddrsig
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/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"
35#include <cassert>
36#include <cstddef>
37#include <cstring>
38#include <memory>
39
40using namespace clang;
41
42//===----------------------------------------------------------------------===//
43// Child Iterators for iterating over subexpressions/substatements
44//===----------------------------------------------------------------------===//
45
46bool 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
50 // expressions.
51 if (getNumArgs() != 2)
52 return false;
53
54 switch (getOperator()) {
55 case OO_Call: case OO_Subscript:
56 return false;
57 default:
58 return true;
59 }
60}
61
62bool CXXTypeidExpr::isPotentiallyEvaluated() const {
63 if (isTypeOperand())
64 return false;
65
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())
72 return true;
73
74 return false;
75}
76
77QualType CXXTypeidExpr::getTypeOperand(ASTContext &Context) const {
78 assert(isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)")((isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)"
) ? static_cast<void> (0) : __assert_fail ("isTypeOperand() && \"Cannot call getTypeOperand for typeid(expr)\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 78, __PRETTY_FUNCTION__))
;
79 Qualifiers Quals;
80 return Context.getUnqualifiedArrayType(
81 Operand.get<TypeSourceInfo *>()->getType().getNonReferenceType(), Quals);
82}
83
84QualType CXXUuidofExpr::getTypeOperand(ASTContext &Context) const {
85 assert(isTypeOperand() && "Cannot call getTypeOperand for __uuidof(expr)")((isTypeOperand() && "Cannot call getTypeOperand for __uuidof(expr)"
) ? static_cast<void> (0) : __assert_fail ("isTypeOperand() && \"Cannot call getTypeOperand for __uuidof(expr)\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 85, __PRETTY_FUNCTION__))
;
86 Qualifiers Quals;
87 return Context.getUnqualifiedArrayType(
88 Operand.get<TypeSourceInfo *>()->getType().getNonReferenceType(), Quals);
89}
90
91// CXXScalarValueInitExpr
92SourceLocation CXXScalarValueInitExpr::getBeginLoc() const {
93 return TypeInfo ? TypeInfo->getTypeLoc().getBeginLoc() : RParenLoc;
94}
95
96// CXXNewExpr
97CXXNewExpr::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) &&(((initializer != nullptr || initializationStyle == NoInit) &&
"Only NoInit can have no initializer.") ? static_cast<void
> (0) : __assert_fail ("(initializer != nullptr || initializationStyle == NoInit) && \"Only NoInit can have no initializer.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 115, __PRETTY_FUNCTION__))
115 "Only NoInit can have no initializer.")(((initializer != nullptr || initializationStyle == NoInit) &&
"Only NoInit can have no initializer.") ? static_cast<void
> (0) : __assert_fail ("(initializer != nullptr || initializationStyle == NoInit) && \"Only NoInit can have no initializer.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 115, __PRETTY_FUNCTION__))
;
116 StoredInitializationStyle = initializer ? initializationStyle + 1 : 0;
117 AllocateArgsArray(C, arraySize != nullptr, placementArgs.size(),
118 initializer != nullptr);
119 unsigned i = 0;
120 if (Array) {
121 if (arraySize->isInstantiationDependent())
122 ExprBits.InstantiationDependent = true;
123
124 if (arraySize->containsUnexpandedParameterPack())
125 ExprBits.ContainsUnexpandedParameterPack = true;
126
127 SubExprs[i++] = arraySize;
128 }
129
130 if (initializer) {
131 if (initializer->isInstantiationDependent())
132 ExprBits.InstantiationDependent = true;
133
134 if (initializer->containsUnexpandedParameterPack())
135 ExprBits.ContainsUnexpandedParameterPack = true;
136
137 SubExprs[i++] = initializer;
138 }
139
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;
145
146 SubExprs[i++] = placementArgs[j];
147 }
148
149 switch (getInitializationStyle()) {
150 case CallInit:
151 this->Range.setEnd(DirectInitRange.getEnd()); break;
152 case ListInit:
153 this->Range.setEnd(getInitializer()->getSourceRange().getEnd()); break;
154 default:
155 if (TypeIdParens.isValid())
156 this->Range.setEnd(TypeIdParens.getEnd());
157 break;
158 }
159}
160
161void CXXNewExpr::AllocateArgsArray(const ASTContext &C, bool isArray,
162 unsigned numPlaceArgs, bool hasInitializer){
163 assert(SubExprs == nullptr && "SubExprs already allocated")((SubExprs == nullptr && "SubExprs already allocated"
) ? static_cast<void> (0) : __assert_fail ("SubExprs == nullptr && \"SubExprs already allocated\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 163, __PRETTY_FUNCTION__))
;
164 Array = isArray;
165 NumPlacementArgs = numPlaceArgs;
166
167 unsigned TotalSize = Array + hasInitializer + NumPlacementArgs;
168 SubExprs = new (C) Stmt*[TotalSize];
169}
170
171bool CXXNewExpr::shouldNullCheckAllocation(const ASTContext &Ctx) const {
172 return getOperatorNew()->getType()->castAs<FunctionProtoType>()
173 ->isNothrow() &&
174 !getOperatorNew()->isReservedGlobalPlacementOperator();
175}
176
177// CXXDeleteExpr
178QualType CXXDeleteExpr::getDestroyedType() const {
179 const Expr *Arg = getArgument();
180
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'
183 // function.
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 ||(((ICE->getCastKind() == CK_NoOp || getOperatorDelete()->
isDestroyingOperatorDelete()) && "only a destroying operator delete can have a converted arg"
) ? static_cast<void> (0) : __assert_fail ("(ICE->getCastKind() == CK_NoOp || getOperatorDelete()->isDestroyingOperatorDelete()) && \"only a destroying operator delete can have a converted arg\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 190, __PRETTY_FUNCTION__))
189 getOperatorDelete()->isDestroyingOperatorDelete()) &&(((ICE->getCastKind() == CK_NoOp || getOperatorDelete()->
isDestroyingOperatorDelete()) && "only a destroying operator delete can have a converted arg"
) ? static_cast<void> (0) : __assert_fail ("(ICE->getCastKind() == CK_NoOp || getOperatorDelete()->isDestroyingOperatorDelete()) && \"only a destroying operator delete can have a converted arg\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 190, __PRETTY_FUNCTION__))
190 "only a destroying operator delete can have a converted arg")(((ICE->getCastKind() == CK_NoOp || getOperatorDelete()->
isDestroyingOperatorDelete()) && "only a destroying operator delete can have a converted arg"
) ? static_cast<void> (0) : __assert_fail ("(ICE->getCastKind() == CK_NoOp || getOperatorDelete()->isDestroyingOperatorDelete()) && \"only a destroying operator delete can have a converted arg\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 190, __PRETTY_FUNCTION__))
;
191 Arg = ICE->getSubExpr();
192 } else
193 break;
194 }
195
196 // The type-to-delete may not be a pointer if it's a dependent type.
197 const QualType ArgType = Arg->getType();
198
199 if (ArgType->isDependentType() && !ArgType->isPointerType())
200 return QualType();
201
202 return ArgType->getAs<PointerType>()->getPointeeType();
203}
204
205// CXXPseudoDestructorExpr
206PseudoDestructorTypeStorage::PseudoDestructorTypeStorage(TypeSourceInfo *Info)
207 : Type(Info) {
208 Location = Info->getTypeLoc().getLocalSourceRange().getBegin();
209}
210
211CXXPseudoDestructorExpr::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() ||
224 (QualifierLoc &&
225 QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent()) ||
226 (ScopeType &&
227 ScopeType->getType()->isInstantiationDependentType()) ||
228 (DestroyedType.getTypeSourceInfo() &&
229 DestroyedType.getTypeSourceInfo()->getType()
230 ->isInstantiationDependentType())),
231 // ContainsUnexpandedParameterPack
232 (Base->containsUnexpandedParameterPack() ||
233 (QualifierLoc &&
234 QualifierLoc.getNestedNameSpecifier()
235 ->containsUnexpandedParameterPack()) ||
236 (ScopeType &&
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) {}
245
246QualType CXXPseudoDestructorExpr::getDestroyedType() const {
247 if (TypeSourceInfo *TInfo = DestroyedType.getTypeSourceInfo())
248 return TInfo->getType();
249
250 return QualType();
251}
252
253SourceLocation CXXPseudoDestructorExpr::getEndLoc() const {
254 SourceLocation End = DestroyedType.getLocation();
255 if (TypeSourceInfo *TInfo = DestroyedType.getTypeSourceInfo())
256 End = TInfo->getTypeLoc().getLocalSourceRange().getEnd();
257 return End;
258}
259
260// UnresolvedLookupExpr
261UnresolvedLookupExpr *
262UnresolvedLookupExpr::Create(const ASTContext &C,
263 CXXRecordDecl *NamingClass,
264 NestedNameSpecifierLoc QualifierLoc,
265 SourceLocation TemplateKWLoc,
266 const DeclarationNameInfo &NameInfo,
267 bool ADL,
268 const TemplateArgumentListInfo *Args,
269 UnresolvedSetIterator Begin,
270 UnresolvedSetIterator End) {
271 assert(Args || TemplateKWLoc.isValid())((Args || TemplateKWLoc.isValid()) ? static_cast<void> (
0) : __assert_fail ("Args || TemplateKWLoc.isValid()", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 271, __PRETTY_FUNCTION__))
;
272 unsigned num_args = Args ? Args->size() : 0;
273
274 std::size_t Size =
275 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(1,
276 num_args);
277 void *Mem = C.Allocate(Size, alignof(UnresolvedLookupExpr));
278 return new (Mem) UnresolvedLookupExpr(C, NamingClass, QualifierLoc,
279 TemplateKWLoc, NameInfo,
280 ADL, /*Overload*/ true, Args,
281 Begin, End);
282}
283
284UnresolvedLookupExpr *
285UnresolvedLookupExpr::CreateEmpty(const ASTContext &C,
286 bool HasTemplateKWAndArgsInfo,
287 unsigned NumTemplateArgs) {
288 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo)((NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo) ? static_cast
<void> (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 288, __PRETTY_FUNCTION__))
;
289 std::size_t Size =
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;
295 return E;
296}
297
298OverloadExpr::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,
305 bool KnownDependent,
306 bool KnownInstantiationDependent,
307 bool KnownContainsUnexpandedParameterPack)
308 : Expr(K, C.OverloadTy, VK_LValue, OK_Ordinary, KnownDependent,
309 KnownDependent,
310 (KnownInstantiationDependent ||
311 NameInfo.isInstantiationDependent() ||
312 (QualifierLoc &&
313 QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent())),
314 (KnownContainsUnexpandedParameterPack ||
315 NameInfo.containsUnexpandedParameterPack() ||
316 (QualifierLoc &&
317 QualifierLoc.getNestedNameSpecifier()
318 ->containsUnexpandedParameterPack()))),
319 NameInfo(NameInfo), QualifierLoc(QualifierLoc), NumResults(End - Begin),
320 HasTemplateKWAndArgsInfo(TemplateArgs != nullptr ||
321 TemplateKWLoc.isValid()) {
322 NumResults = End - Begin;
323 if (NumResults) {
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;
331 }
332 }
333
334 Results = static_cast<DeclAccessPair *>(C.Allocate(
335 sizeof(DeclAccessPair) * NumResults, alignof(DeclAccessPair)));
336 memcpy(Results, Begin.I, NumResults * sizeof(DeclAccessPair));
337 }
338
339 // If we have explicit template arguments, check for dependent
340 // template arguments and whether they contain any unexpanded pack
341 // expansions.
342 if (TemplateArgs) {
343 bool Dependent = false;
344 bool InstantiationDependent = false;
345 bool ContainsUnexpandedParameterPack = false;
346 getTrailingASTTemplateKWAndArgsInfo()->initializeFrom(
347 TemplateKWLoc, *TemplateArgs, getTrailingTemplateArgumentLoc(),
348 Dependent, InstantiationDependent, ContainsUnexpandedParameterPack);
349
350 if (Dependent) {
351 ExprBits.TypeDependent = true;
352 ExprBits.ValueDependent = true;
353 }
354 if (InstantiationDependent)
355 ExprBits.InstantiationDependent = true;
356 if (ContainsUnexpandedParameterPack)
357 ExprBits.ContainsUnexpandedParameterPack = true;
358 } else if (TemplateKWLoc.isValid()) {
359 getTrailingASTTemplateKWAndArgsInfo()->initializeFrom(TemplateKWLoc);
360 }
361
362 if (isTypeDependent())
363 setType(C.DependentTy);
364}
365
366void OverloadExpr::initializeResults(const ASTContext &C,
367 UnresolvedSetIterator Begin,
368 UnresolvedSetIterator End) {
369 assert(!Results && "Results already initialized!")((!Results && "Results already initialized!") ? static_cast
<void> (0) : __assert_fail ("!Results && \"Results already initialized!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 369, __PRETTY_FUNCTION__))
;
370 NumResults = End - Begin;
371 if (NumResults) {
372 Results = static_cast<DeclAccessPair *>(
373 C.Allocate(sizeof(DeclAccessPair) * NumResults,
374
375 alignof(DeclAccessPair)));
376 memcpy(Results, Begin.I, NumResults * sizeof(DeclAccessPair));
377 }
378}
379
380CXXRecordDecl *OverloadExpr::getNamingClass() const {
381 if (isa<UnresolvedLookupExpr>(this))
382 return cast<UnresolvedLookupExpr>(this)->getNamingClass();
383 else
384 return cast<UnresolvedMemberExpr>(this)->getNamingClass();
385}
386
387// DependentScopeDeclRefExpr
388DependentScopeDeclRefExpr::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,
394 true, true,
395 (NameInfo.isInstantiationDependent() ||
396 (QualifierLoc &&
397 QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent())),
398 (NameInfo.containsUnexpandedParameterPack() ||
399 (QualifierLoc &&
400 QualifierLoc.getNestedNameSpecifier()
401 ->containsUnexpandedParameterPack()))),
402 QualifierLoc(QualifierLoc), NameInfo(NameInfo),
403 HasTemplateKWAndArgsInfo(Args != nullptr || TemplateKWLoc.isValid())
404{
405 if (Args) {
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(
416 TemplateKWLoc);
417 }
418}
419
420DependentScopeDeclRefExpr *
421DependentScopeDeclRefExpr::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")((QualifierLoc && "should be created for dependent qualifiers"
) ? static_cast<void> (0) : __assert_fail ("QualifierLoc && \"should be created for dependent qualifiers\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 426, __PRETTY_FUNCTION__))
;
427 bool HasTemplateKWAndArgsInfo = Args || TemplateKWLoc.isValid();
428 std::size_t Size =
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);
434}
435
436DependentScopeDeclRefExpr *
437DependentScopeDeclRefExpr::CreateEmpty(const ASTContext &C,
438 bool HasTemplateKWAndArgsInfo,
439 unsigned NumTemplateArgs) {
440 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo)((NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo) ? static_cast
<void> (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 440, __PRETTY_FUNCTION__))
;
441 std::size_t Size =
442 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
443 HasTemplateKWAndArgsInfo, NumTemplateArgs);
444 void *Mem = C.Allocate(Size);
445 auto *E =
446 new (Mem) DependentScopeDeclRefExpr(QualType(), NestedNameSpecifierLoc(),
447 SourceLocation(),
448 DeclarationNameInfo(), nullptr);
449 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
450 return E;
451}
452
453SourceLocation CXXConstructExpr::getBeginLoc() const {
454 if (isa<CXXTemporaryObjectExpr>(this))
455 return cast<CXXTemporaryObjectExpr>(this)->getBeginLoc();
456 return getLocation();
457}
458
459SourceLocation CXXConstructExpr::getEndLoc() const {
460 if (isa<CXXTemporaryObjectExpr>(this))
461 return cast<CXXTemporaryObjectExpr>(this)->getEndLoc();
462
463 if (ParenOrBraceRange.isValid())
464 return ParenOrBraceRange.getEnd();
465
466 SourceLocation End = getLocation();
467 for (unsigned I = getNumArgs(); I > 0; --I) {
468 const Expr *Arg = getArg(I-1);
469 if (!Arg->isDefaultArgument()) {
470 SourceLocation NewEnd = Arg->getEndLoc();
471 if (NewEnd.isValid()) {
472 End = NewEnd;
473 break;
474 }
475 }
476 }
477
478 return End;
479}
480
481CXXOperatorCallExpr::CXXOperatorCallExpr(OverloadedOperatorKind OpKind,
482 Expr *Fn, ArrayRef<Expr *> Args,
483 QualType Ty, ExprValueKind VK,
484 SourceLocation OperatorLoc,
485 FPOptions FPFeatures,
486 ADLCallKind UsesADL)
487 : CallExpr(CXXOperatorCallExprClass, Fn, /*PreArgs=*/{}, Args, Ty, VK,
488 OperatorLoc, /*MinNumArgs=*/0, UsesADL) {
489 CXXOperatorCallExprBits.OperatorKind = OpKind;
490 CXXOperatorCallExprBits.FPFeatures = FPFeatures.getInt();
491 assert((((CXXOperatorCallExprBits.OperatorKind == static_cast<unsigned
>(OpKind)) && "OperatorKind overflow!") ? static_cast
<void> (0) : __assert_fail ("(CXXOperatorCallExprBits.OperatorKind == static_cast<unsigned>(OpKind)) && \"OperatorKind overflow!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 493, __PRETTY_FUNCTION__))
492 (CXXOperatorCallExprBits.OperatorKind == static_cast<unsigned>(OpKind)) &&(((CXXOperatorCallExprBits.OperatorKind == static_cast<unsigned
>(OpKind)) && "OperatorKind overflow!") ? static_cast
<void> (0) : __assert_fail ("(CXXOperatorCallExprBits.OperatorKind == static_cast<unsigned>(OpKind)) && \"OperatorKind overflow!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 493, __PRETTY_FUNCTION__))
493 "OperatorKind overflow!")(((CXXOperatorCallExprBits.OperatorKind == static_cast<unsigned
>(OpKind)) && "OperatorKind overflow!") ? static_cast
<void> (0) : __assert_fail ("(CXXOperatorCallExprBits.OperatorKind == static_cast<unsigned>(OpKind)) && \"OperatorKind overflow!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 493, __PRETTY_FUNCTION__))
;
494 assert((CXXOperatorCallExprBits.FPFeatures == FPFeatures.getInt()) &&(((CXXOperatorCallExprBits.FPFeatures == FPFeatures.getInt())
&& "FPFeatures overflow!") ? static_cast<void>
(0) : __assert_fail ("(CXXOperatorCallExprBits.FPFeatures == FPFeatures.getInt()) && \"FPFeatures overflow!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 495, __PRETTY_FUNCTION__))
495 "FPFeatures overflow!")(((CXXOperatorCallExprBits.FPFeatures == FPFeatures.getInt())
&& "FPFeatures overflow!") ? static_cast<void>
(0) : __assert_fail ("(CXXOperatorCallExprBits.FPFeatures == FPFeatures.getInt()) && \"FPFeatures overflow!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 495, __PRETTY_FUNCTION__))
;
496 Range = getSourceRangeImpl();
497}
498
499CXXOperatorCallExpr::CXXOperatorCallExpr(unsigned NumArgs, EmptyShell Empty)
500 : CallExpr(CXXOperatorCallExprClass, /*NumPreArgs=*/0, NumArgs, Empty) {}
501
502CXXOperatorCallExpr *CXXOperatorCallExpr::Create(
503 const ASTContext &Ctx, OverloadedOperatorKind OpKind, Expr *Fn,
504 ArrayRef<Expr *> Args, QualType Ty, ExprValueKind VK,
505 SourceLocation OperatorLoc, FPOptions FPFeatures, ADLCallKind UsesADL) {
506 // Allocate storage for the trailing objects of CallExpr.
507 unsigned NumArgs = Args.size();
508 unsigned SizeOfTrailingObjects =
509 CallExpr::sizeOfTrailingObjects(/*NumPreArgs=*/0, NumArgs);
510 void *Mem = Ctx.Allocate(sizeof(CXXOperatorCallExpr) + SizeOfTrailingObjects,
511 alignof(CXXOperatorCallExpr));
512 return new (Mem) CXXOperatorCallExpr(OpKind, Fn, Args, Ty, VK, OperatorLoc,
513 FPFeatures, UsesADL);
514}
515
516CXXOperatorCallExpr *CXXOperatorCallExpr::CreateEmpty(const ASTContext &Ctx,
517 unsigned NumArgs,
518 EmptyShell Empty) {
519 // Allocate storage for the trailing objects of CallExpr.
520 unsigned SizeOfTrailingObjects =
521 CallExpr::sizeOfTrailingObjects(/*NumPreArgs=*/0, NumArgs);
522 void *Mem = Ctx.Allocate(sizeof(CXXOperatorCallExpr) + SizeOfTrailingObjects,
523 alignof(CXXOperatorCallExpr));
524 return new (Mem) CXXOperatorCallExpr(NumArgs, Empty);
525}
526
527SourceRange CXXOperatorCallExpr::getSourceRangeImpl() const {
528 OverloadedOperatorKind Kind = getOperator();
529 if (Kind == OO_PlusPlus || Kind == OO_MinusMinus) {
530 if (getNumArgs() == 1)
531 // Prefix operator
532 return SourceRange(getOperatorLoc(), getArg(0)->getEndLoc());
533 else
534 // Postfix operator
535 return SourceRange(getArg(0)->getBeginLoc(), getOperatorLoc());
536 } else if (Kind == OO_Arrow) {
537 return getArg(0)->getSourceRange();
538 } else if (Kind == OO_Call) {
539 return SourceRange(getArg(0)->getBeginLoc(), getRParenLoc());
540 } else if (Kind == OO_Subscript) {
541 return SourceRange(getArg(0)->getBeginLoc(), getRParenLoc());
542 } else if (getNumArgs() == 1) {
543 return SourceRange(getOperatorLoc(), getArg(0)->getEndLoc());
544 } else if (getNumArgs() == 2) {
545 return SourceRange(getArg(0)->getBeginLoc(), getArg(1)->getEndLoc());
546 } else {
547 return getOperatorLoc();
548 }
549}
550
551CXXMemberCallExpr::CXXMemberCallExpr(Expr *Fn, ArrayRef<Expr *> Args,
552 QualType Ty, ExprValueKind VK,
553 SourceLocation RP, unsigned MinNumArgs)
554 : CallExpr(CXXMemberCallExprClass, Fn, /*PreArgs=*/{}, Args, Ty, VK, RP,
555 MinNumArgs, NotADL) {}
556
557CXXMemberCallExpr::CXXMemberCallExpr(unsigned NumArgs, EmptyShell Empty)
558 : CallExpr(CXXMemberCallExprClass, /*NumPreArgs=*/0, NumArgs, Empty) {}
559
560CXXMemberCallExpr *CXXMemberCallExpr::Create(const ASTContext &Ctx, Expr *Fn,
561 ArrayRef<Expr *> Args, QualType Ty,
562 ExprValueKind VK,
563 SourceLocation RP,
564 unsigned MinNumArgs) {
565 // Allocate storage for the trailing objects of CallExpr.
566 unsigned NumArgs = std::max<unsigned>(Args.size(), MinNumArgs);
567 unsigned SizeOfTrailingObjects =
568 CallExpr::sizeOfTrailingObjects(/*NumPreArgs=*/0, NumArgs);
569 void *Mem = Ctx.Allocate(sizeof(CXXMemberCallExpr) + SizeOfTrailingObjects,
570 alignof(CXXMemberCallExpr));
571 return new (Mem) CXXMemberCallExpr(Fn, Args, Ty, VK, RP, MinNumArgs);
572}
573
574CXXMemberCallExpr *CXXMemberCallExpr::CreateEmpty(const ASTContext &Ctx,
575 unsigned NumArgs,
576 EmptyShell Empty) {
577 // Allocate storage for the trailing objects of CallExpr.
578 unsigned SizeOfTrailingObjects =
579 CallExpr::sizeOfTrailingObjects(/*NumPreArgs=*/0, NumArgs);
580 void *Mem = Ctx.Allocate(sizeof(CXXMemberCallExpr) + SizeOfTrailingObjects,
581 alignof(CXXMemberCallExpr));
582 return new (Mem) CXXMemberCallExpr(NumArgs, Empty);
583}
584
585Expr *CXXMemberCallExpr::getImplicitObjectArgument() const {
586 const Expr *Callee = getCallee()->IgnoreParens();
587 if (const auto *MemExpr = dyn_cast<MemberExpr>(Callee))
588 return MemExpr->getBase();
589 if (const auto *BO = dyn_cast<BinaryOperator>(Callee))
590 if (BO->getOpcode() == BO_PtrMemD || BO->getOpcode() == BO_PtrMemI)
591 return BO->getLHS();
592
593 // FIXME: Will eventually need to cope with member pointers.
594 return nullptr;
595}
596
597CXXMethodDecl *CXXMemberCallExpr::getMethodDecl() const {
598 if (const auto *MemExpr = dyn_cast<MemberExpr>(getCallee()->IgnoreParens()))
599 return cast<CXXMethodDecl>(MemExpr->getMemberDecl());
600
601 // FIXME: Will eventually need to cope with member pointers.
602 return nullptr;
603}
604
605CXXRecordDecl *CXXMemberCallExpr::getRecordDecl() const {
606 Expr* ThisArg = getImplicitObjectArgument();
607 if (!ThisArg)
608 return nullptr;
609
610 if (ThisArg->getType()->isAnyPointerType())
611 return ThisArg->getType()->getPointeeType()->getAsCXXRecordDecl();
612
613 return ThisArg->getType()->getAsCXXRecordDecl();
614}
615
616//===----------------------------------------------------------------------===//
617// Named casts
618//===----------------------------------------------------------------------===//
619
620/// getCastName - Get the name of the C++ cast being used, e.g.,
621/// "static_cast", "dynamic_cast", "reinterpret_cast", or
622/// "const_cast". The returned pointer must not be freed.
623const char *CXXNamedCastExpr::getCastName() const {
624 switch (getStmtClass()) {
625 case CXXStaticCastExprClass: return "static_cast";
626 case CXXDynamicCastExprClass: return "dynamic_cast";
627 case CXXReinterpretCastExprClass: return "reinterpret_cast";
628 case CXXConstCastExprClass: return "const_cast";
629 default: return "<invalid cast>";
630 }
631}
632
633CXXStaticCastExpr *CXXStaticCastExpr::Create(const ASTContext &C, QualType T,
634 ExprValueKind VK,
635 CastKind K, Expr *Op,
636 const CXXCastPath *BasePath,
637 TypeSourceInfo *WrittenTy,
638 SourceLocation L,
639 SourceLocation RParenLoc,
640 SourceRange AngleBrackets) {
641 unsigned PathSize = (BasePath ? BasePath->size() : 0);
642 void *Buffer =
643 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
644 PathSize ? 1 : 0, PathSize));
645 auto *E =
646 new (Buffer) CXXStaticCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
647 RParenLoc, AngleBrackets);
648 if (PathSize)
649 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
650 E->getTrailingObjects<CXXBaseSpecifier *>());
651 return E;
652}
653
654CXXStaticCastExpr *CXXStaticCastExpr::CreateEmpty(const ASTContext &C,
655 unsigned PathSize) {
656 void *Buffer =
657 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
658 PathSize ? 1 : 0, PathSize));
659 return new (Buffer) CXXStaticCastExpr(EmptyShell(), PathSize);
660}
661
662CXXDynamicCastExpr *CXXDynamicCastExpr::Create(const ASTContext &C, QualType T,
663 ExprValueKind VK,
664 CastKind K, Expr *Op,
665 const CXXCastPath *BasePath,
666 TypeSourceInfo *WrittenTy,
667 SourceLocation L,
668 SourceLocation RParenLoc,
669 SourceRange AngleBrackets) {
670 unsigned PathSize = (BasePath ? BasePath->size() : 0);
671 void *Buffer =
672 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
673 PathSize ? 1 : 0, PathSize));
674 auto *E =
675 new (Buffer) CXXDynamicCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
676 RParenLoc, AngleBrackets);
677 if (PathSize)
678 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
679 E->getTrailingObjects<CXXBaseSpecifier *>());
680 return E;
681}
682
683CXXDynamicCastExpr *CXXDynamicCastExpr::CreateEmpty(const ASTContext &C,
684 unsigned PathSize) {
685 void *Buffer =
686 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
687 PathSize ? 1 : 0, PathSize));
688 return new (Buffer) CXXDynamicCastExpr(EmptyShell(), PathSize);
689}
690
691/// isAlwaysNull - Return whether the result of the dynamic_cast is proven
692/// to always be null. For example:
693///
694/// struct A { };
695/// struct B final : A { };
696/// struct C { };
697///
698/// C *f(B* b) { return dynamic_cast<C*>(b); }
699bool CXXDynamicCastExpr::isAlwaysNull() const
700{
701 QualType SrcType = getSubExpr()->getType();
702 QualType DestType = getType();
703
704 if (const auto *SrcPTy = SrcType->getAs<PointerType>()) {
705 SrcType = SrcPTy->getPointeeType();
706 DestType = DestType->castAs<PointerType>()->getPointeeType();
707 }
708
709 if (DestType->isVoidType())
710 return false;
711
712 const auto *SrcRD =
713 cast<CXXRecordDecl>(SrcType->castAs<RecordType>()->getDecl());
714
715 if (!SrcRD->hasAttr<FinalAttr>())
716 return false;
717
718 const auto *DestRD =
719 cast<CXXRecordDecl>(DestType->castAs<RecordType>()->getDecl());
720
721 return !DestRD->isDerivedFrom(SrcRD);
722}
723
724CXXReinterpretCastExpr *
725CXXReinterpretCastExpr::Create(const ASTContext &C, QualType T,
726 ExprValueKind VK, CastKind K, Expr *Op,
727 const CXXCastPath *BasePath,
728 TypeSourceInfo *WrittenTy, SourceLocation L,
729 SourceLocation RParenLoc,
730 SourceRange AngleBrackets) {
731 unsigned PathSize = (BasePath ? BasePath->size() : 0);
732 void *Buffer =
733 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
734 PathSize ? 1 : 0, PathSize));
735 auto *E =
736 new (Buffer) CXXReinterpretCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
737 RParenLoc, AngleBrackets);
738 if (PathSize)
739 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
740 E->getTrailingObjects<CXXBaseSpecifier *>());
741 return E;
742}
743
744CXXReinterpretCastExpr *
745CXXReinterpretCastExpr::CreateEmpty(const ASTContext &C, unsigned PathSize) {
746 void *Buffer =
747 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
748 PathSize ? 1 : 0, PathSize));
749 return new (Buffer) CXXReinterpretCastExpr(EmptyShell(), PathSize);
750}
751
752CXXConstCastExpr *CXXConstCastExpr::Create(const ASTContext &C, QualType T,
753 ExprValueKind VK, Expr *Op,
754 TypeSourceInfo *WrittenTy,
755 SourceLocation L,
756 SourceLocation RParenLoc,
757 SourceRange AngleBrackets) {
758 return new (C) CXXConstCastExpr(T, VK, Op, WrittenTy, L, RParenLoc, AngleBrackets);
759}
760
761CXXConstCastExpr *CXXConstCastExpr::CreateEmpty(const ASTContext &C) {
762 return new (C) CXXConstCastExpr(EmptyShell());
763}
764
765CXXFunctionalCastExpr *
766CXXFunctionalCastExpr::Create(const ASTContext &C, QualType T, ExprValueKind VK,
767 TypeSourceInfo *Written, CastKind K, Expr *Op,
768 const CXXCastPath *BasePath,
769 SourceLocation L, SourceLocation R) {
770 unsigned PathSize = (BasePath ? BasePath->size() : 0);
771 void *Buffer =
772 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
773 PathSize ? 1 : 0, PathSize));
774 auto *E =
775 new (Buffer) CXXFunctionalCastExpr(T, VK, Written, K, Op, PathSize, L, R);
776 if (PathSize)
777 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
778 E->getTrailingObjects<CXXBaseSpecifier *>());
779 return E;
780}
781
782CXXFunctionalCastExpr *
783CXXFunctionalCastExpr::CreateEmpty(const ASTContext &C, unsigned PathSize) {
784 void *Buffer =
785 C.Allocate(totalSizeToAlloc<CastExpr::BasePathSizeTy, CXXBaseSpecifier *>(
786 PathSize ? 1 : 0, PathSize));
787 return new (Buffer) CXXFunctionalCastExpr(EmptyShell(), PathSize);
788}
789
790SourceLocation CXXFunctionalCastExpr::getBeginLoc() const {
791 return getTypeInfoAsWritten()->getTypeLoc().getBeginLoc();
792}
793
794SourceLocation CXXFunctionalCastExpr::getEndLoc() const {
795 return RParenLoc.isValid() ? RParenLoc : getSubExpr()->getEndLoc();
796}
797
798UserDefinedLiteral::UserDefinedLiteral(Expr *Fn, ArrayRef<Expr *> Args,
799 QualType Ty, ExprValueKind VK,
800 SourceLocation LitEndLoc,
801 SourceLocation SuffixLoc)
802 : CallExpr(UserDefinedLiteralClass, Fn, /*PreArgs=*/{}, Args, Ty, VK,
803 LitEndLoc, /*MinNumArgs=*/0, NotADL),
804 UDSuffixLoc(SuffixLoc) {}
805
806UserDefinedLiteral::UserDefinedLiteral(unsigned NumArgs, EmptyShell Empty)
807 : CallExpr(UserDefinedLiteralClass, /*NumPreArgs=*/0, NumArgs, Empty) {}
808
809UserDefinedLiteral *UserDefinedLiteral::Create(const ASTContext &Ctx, Expr *Fn,
810 ArrayRef<Expr *> Args,
811 QualType Ty, ExprValueKind VK,
812 SourceLocation LitEndLoc,
813 SourceLocation SuffixLoc) {
814 // Allocate storage for the trailing objects of CallExpr.
815 unsigned NumArgs = Args.size();
816 unsigned SizeOfTrailingObjects =
817 CallExpr::sizeOfTrailingObjects(/*NumPreArgs=*/0, NumArgs);
818 void *Mem = Ctx.Allocate(sizeof(UserDefinedLiteral) + SizeOfTrailingObjects,
819 alignof(UserDefinedLiteral));
820 return new (Mem) UserDefinedLiteral(Fn, Args, Ty, VK, LitEndLoc, SuffixLoc);
821}
822
823UserDefinedLiteral *UserDefinedLiteral::CreateEmpty(const ASTContext &Ctx,
824 unsigned NumArgs,
825 EmptyShell Empty) {
826 // Allocate storage for the trailing objects of CallExpr.
827 unsigned SizeOfTrailingObjects =
828 CallExpr::sizeOfTrailingObjects(/*NumPreArgs=*/0, NumArgs);
829 void *Mem = Ctx.Allocate(sizeof(UserDefinedLiteral) + SizeOfTrailingObjects,
830 alignof(UserDefinedLiteral));
831 return new (Mem) UserDefinedLiteral(NumArgs, Empty);
832}
833
834UserDefinedLiteral::LiteralOperatorKind
835UserDefinedLiteral::getLiteralOperatorKind() const {
836 if (getNumArgs() == 0)
837 return LOK_Template;
838 if (getNumArgs() == 2)
839 return LOK_String;
840
841 assert(getNumArgs() == 1 && "unexpected #args in literal operator call")((getNumArgs() == 1 && "unexpected #args in literal operator call"
) ? static_cast<void> (0) : __assert_fail ("getNumArgs() == 1 && \"unexpected #args in literal operator call\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 841, __PRETTY_FUNCTION__))
;
842 QualType ParamTy =
843 cast<FunctionDecl>(getCalleeDecl())->getParamDecl(0)->getType();
844 if (ParamTy->isPointerType())
845 return LOK_Raw;
846 if (ParamTy->isAnyCharacterType())
847 return LOK_Character;
848 if (ParamTy->isIntegerType())
849 return LOK_Integer;
850 if (ParamTy->isFloatingType())
851 return LOK_Floating;
852
853 llvm_unreachable("unknown kind of literal operator")::llvm::llvm_unreachable_internal("unknown kind of literal operator"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 853)
;
854}
855
856Expr *UserDefinedLiteral::getCookedLiteral() {
857#ifndef NDEBUG
858 LiteralOperatorKind LOK = getLiteralOperatorKind();
859 assert(LOK != LOK_Template && LOK != LOK_Raw && "not a cooked literal")((LOK != LOK_Template && LOK != LOK_Raw && "not a cooked literal"
) ? static_cast<void> (0) : __assert_fail ("LOK != LOK_Template && LOK != LOK_Raw && \"not a cooked literal\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 859, __PRETTY_FUNCTION__))
;
860#endif
861 return getArg(0);
862}
863
864const IdentifierInfo *UserDefinedLiteral::getUDSuffix() const {
865 return cast<FunctionDecl>(getCalleeDecl())->getLiteralIdentifier();
866}
867
868CXXDefaultInitExpr::CXXDefaultInitExpr(const ASTContext &Ctx, SourceLocation Loc,
869 FieldDecl *Field, QualType Ty)
870 : Expr(CXXDefaultInitExprClass, Ty.getNonLValueExprType(Ctx),
871 Ty->isLValueReferenceType() ? VK_LValue : Ty->isRValueReferenceType()
872 ? VK_XValue
873 : VK_RValue,
874 /*FIXME*/ OK_Ordinary, false, false, false, false),
875 Field(Field) {
876 CXXDefaultInitExprBits.Loc = Loc;
877 assert(Field->hasInClassInitializer())((Field->hasInClassInitializer()) ? static_cast<void>
(0) : __assert_fail ("Field->hasInClassInitializer()", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 877, __PRETTY_FUNCTION__))
;
878}
879
880CXXTemporary *CXXTemporary::Create(const ASTContext &C,
881 const CXXDestructorDecl *Destructor) {
882 return new (C) CXXTemporary(Destructor);
883}
884
885CXXBindTemporaryExpr *CXXBindTemporaryExpr::Create(const ASTContext &C,
886 CXXTemporary *Temp,
887 Expr* SubExpr) {
888 assert((SubExpr->getType()->isRecordType() ||(((SubExpr->getType()->isRecordType() || SubExpr->getType
()->isArrayType()) && "Expression bound to a temporary must have record or array type!"
) ? static_cast<void> (0) : __assert_fail ("(SubExpr->getType()->isRecordType() || SubExpr->getType()->isArrayType()) && \"Expression bound to a temporary must have record or array type!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 890, __PRETTY_FUNCTION__))
889 SubExpr->getType()->isArrayType()) &&(((SubExpr->getType()->isRecordType() || SubExpr->getType
()->isArrayType()) && "Expression bound to a temporary must have record or array type!"
) ? static_cast<void> (0) : __assert_fail ("(SubExpr->getType()->isRecordType() || SubExpr->getType()->isArrayType()) && \"Expression bound to a temporary must have record or array type!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 890, __PRETTY_FUNCTION__))
890 "Expression bound to a temporary must have record or array type!")(((SubExpr->getType()->isRecordType() || SubExpr->getType
()->isArrayType()) && "Expression bound to a temporary must have record or array type!"
) ? static_cast<void> (0) : __assert_fail ("(SubExpr->getType()->isRecordType() || SubExpr->getType()->isArrayType()) && \"Expression bound to a temporary must have record or array type!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 890, __PRETTY_FUNCTION__))
;
891
892 return new (C) CXXBindTemporaryExpr(Temp, SubExpr);
893}
894
895CXXTemporaryObjectExpr::CXXTemporaryObjectExpr(
896 CXXConstructorDecl *Cons, QualType Ty, TypeSourceInfo *TSI,
897 ArrayRef<Expr *> Args, SourceRange ParenOrBraceRange,
898 bool HadMultipleCandidates, bool ListInitialization,
899 bool StdInitListInitialization, bool ZeroInitialization)
900 : CXXConstructExpr(
901 CXXTemporaryObjectExprClass, Ty, TSI->getTypeLoc().getBeginLoc(),
902 Cons, /* Elidable=*/false, Args, HadMultipleCandidates,
903 ListInitialization, StdInitListInitialization, ZeroInitialization,
904 CXXConstructExpr::CK_Complete, ParenOrBraceRange),
905 TSI(TSI) {}
906
907CXXTemporaryObjectExpr::CXXTemporaryObjectExpr(EmptyShell Empty,
908 unsigned NumArgs)
909 : CXXConstructExpr(CXXTemporaryObjectExprClass, Empty, NumArgs) {}
910
911CXXTemporaryObjectExpr *CXXTemporaryObjectExpr::Create(
912 const ASTContext &Ctx, CXXConstructorDecl *Cons, QualType Ty,
913 TypeSourceInfo *TSI, ArrayRef<Expr *> Args, SourceRange ParenOrBraceRange,
914 bool HadMultipleCandidates, bool ListInitialization,
915 bool StdInitListInitialization, bool ZeroInitialization) {
916 unsigned SizeOfTrailingObjects = sizeOfTrailingObjects(Args.size());
917 void *Mem =
918 Ctx.Allocate(sizeof(CXXTemporaryObjectExpr) + SizeOfTrailingObjects,
919 alignof(CXXTemporaryObjectExpr));
920 return new (Mem) CXXTemporaryObjectExpr(
921 Cons, Ty, TSI, Args, ParenOrBraceRange, HadMultipleCandidates,
922 ListInitialization, StdInitListInitialization, ZeroInitialization);
923}
924
925CXXTemporaryObjectExpr *
926CXXTemporaryObjectExpr::CreateEmpty(const ASTContext &Ctx, unsigned NumArgs) {
927 unsigned SizeOfTrailingObjects = sizeOfTrailingObjects(NumArgs);
928 void *Mem =
929 Ctx.Allocate(sizeof(CXXTemporaryObjectExpr) + SizeOfTrailingObjects,
930 alignof(CXXTemporaryObjectExpr));
931 return new (Mem) CXXTemporaryObjectExpr(EmptyShell(), NumArgs);
932}
933
934SourceLocation CXXTemporaryObjectExpr::getBeginLoc() const {
935 return getTypeSourceInfo()->getTypeLoc().getBeginLoc();
936}
937
938SourceLocation CXXTemporaryObjectExpr::getEndLoc() const {
939 SourceLocation Loc = getParenOrBraceRange().getEnd();
940 if (Loc.isInvalid() && getNumArgs())
941 Loc = getArg(getNumArgs() - 1)->getEndLoc();
942 return Loc;
943}
944
945CXXConstructExpr *CXXConstructExpr::Create(
946 const ASTContext &Ctx, QualType Ty, SourceLocation Loc,
947 CXXConstructorDecl *Ctor, bool Elidable, ArrayRef<Expr *> Args,
948 bool HadMultipleCandidates, bool ListInitialization,
949 bool StdInitListInitialization, bool ZeroInitialization,
950 ConstructionKind ConstructKind, SourceRange ParenOrBraceRange) {
951 unsigned SizeOfTrailingObjects = sizeOfTrailingObjects(Args.size());
952 void *Mem = Ctx.Allocate(sizeof(CXXConstructExpr) + SizeOfTrailingObjects,
953 alignof(CXXConstructExpr));
954 return new (Mem) CXXConstructExpr(
955 CXXConstructExprClass, Ty, Loc, Ctor, Elidable, Args,
956 HadMultipleCandidates, ListInitialization, StdInitListInitialization,
957 ZeroInitialization, ConstructKind, ParenOrBraceRange);
958}
959
960CXXConstructExpr *CXXConstructExpr::CreateEmpty(const ASTContext &Ctx,
961 unsigned NumArgs) {
962 unsigned SizeOfTrailingObjects = sizeOfTrailingObjects(NumArgs);
963 void *Mem = Ctx.Allocate(sizeof(CXXConstructExpr) + SizeOfTrailingObjects,
964 alignof(CXXConstructExpr));
965 return new (Mem)
966 CXXConstructExpr(CXXConstructExprClass, EmptyShell(), NumArgs);
967}
968
969CXXConstructExpr::CXXConstructExpr(
970 StmtClass SC, QualType Ty, SourceLocation Loc, CXXConstructorDecl *Ctor,
971 bool Elidable, ArrayRef<Expr *> Args, bool HadMultipleCandidates,
972 bool ListInitialization, bool StdInitListInitialization,
973 bool ZeroInitialization, ConstructionKind ConstructKind,
974 SourceRange ParenOrBraceRange)
975 : Expr(SC, Ty, VK_RValue, OK_Ordinary, Ty->isDependentType(),
976 Ty->isDependentType(), Ty->isInstantiationDependentType(),
977 Ty->containsUnexpandedParameterPack()),
978 Constructor(Ctor), ParenOrBraceRange(ParenOrBraceRange),
979 NumArgs(Args.size()) {
980 CXXConstructExprBits.Elidable = Elidable;
981 CXXConstructExprBits.HadMultipleCandidates = HadMultipleCandidates;
982 CXXConstructExprBits.ListInitialization = ListInitialization;
983 CXXConstructExprBits.StdInitListInitialization = StdInitListInitialization;
984 CXXConstructExprBits.ZeroInitialization = ZeroInitialization;
985 CXXConstructExprBits.ConstructionKind = ConstructKind;
986 CXXConstructExprBits.Loc = Loc;
987
988 Stmt **TrailingArgs = getTrailingArgs();
989 for (unsigned I = 0, N = Args.size(); I != N; ++I) {
990 assert(Args[I] && "NULL argument in CXXConstructExpr!")((Args[I] && "NULL argument in CXXConstructExpr!") ? static_cast
<void> (0) : __assert_fail ("Args[I] && \"NULL argument in CXXConstructExpr!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 990, __PRETTY_FUNCTION__))
;
991
992 if (Args[I]->isValueDependent())
993 ExprBits.ValueDependent = true;
994 if (Args[I]->isInstantiationDependent())
995 ExprBits.InstantiationDependent = true;
996 if (Args[I]->containsUnexpandedParameterPack())
997 ExprBits.ContainsUnexpandedParameterPack = true;
998
999 TrailingArgs[I] = Args[I];
1000 }
1001}
1002
1003CXXConstructExpr::CXXConstructExpr(StmtClass SC, EmptyShell Empty,
1004 unsigned NumArgs)
1005 : Expr(SC, Empty), NumArgs(NumArgs) {}
1006
1007LambdaCapture::LambdaCapture(SourceLocation Loc, bool Implicit,
1008 LambdaCaptureKind Kind, VarDecl *Var,
1009 SourceLocation EllipsisLoc)
1010 : DeclAndBits(Var, 0), Loc(Loc), EllipsisLoc(EllipsisLoc) {
1011 unsigned Bits = 0;
1012 if (Implicit)
1013 Bits |= Capture_Implicit;
1014
1015 switch (Kind) {
1016 case LCK_StarThis:
1017 Bits |= Capture_ByCopy;
1018 LLVM_FALLTHROUGH[[clang::fallthrough]];
1019 case LCK_This:
1020 assert(!Var && "'this' capture cannot have a variable!")((!Var && "'this' capture cannot have a variable!") ?
static_cast<void> (0) : __assert_fail ("!Var && \"'this' capture cannot have a variable!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 1020, __PRETTY_FUNCTION__))
;
1021 Bits |= Capture_This;
1022 break;
1023
1024 case LCK_ByCopy:
1025 Bits |= Capture_ByCopy;
1026 LLVM_FALLTHROUGH[[clang::fallthrough]];
1027 case LCK_ByRef:
1028 assert(Var && "capture must have a variable!")((Var && "capture must have a variable!") ? static_cast
<void> (0) : __assert_fail ("Var && \"capture must have a variable!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 1028, __PRETTY_FUNCTION__))
;
1029 break;
1030 case LCK_VLAType:
1031 assert(!Var && "VLA type capture cannot have a variable!")((!Var && "VLA type capture cannot have a variable!")
? static_cast<void> (0) : __assert_fail ("!Var && \"VLA type capture cannot have a variable!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 1031, __PRETTY_FUNCTION__))
;
1032 break;
1033 }
1034 DeclAndBits.setInt(Bits);
1035}
1036
1037LambdaCaptureKind LambdaCapture::getCaptureKind() const {
1038 if (capturesVLAType())
1039 return LCK_VLAType;
1040 bool CapByCopy = DeclAndBits.getInt() & Capture_ByCopy;
1041 if (capturesThis())
1042 return CapByCopy ? LCK_StarThis : LCK_This;
1043 return CapByCopy ? LCK_ByCopy : LCK_ByRef;
1044}
1045
1046LambdaExpr::LambdaExpr(QualType T, SourceRange IntroducerRange,
1047 LambdaCaptureDefault CaptureDefault,
1048 SourceLocation CaptureDefaultLoc,
1049 ArrayRef<LambdaCapture> Captures, bool ExplicitParams,
1050 bool ExplicitResultType, ArrayRef<Expr *> CaptureInits,
1051 SourceLocation ClosingBrace,
1052 bool ContainsUnexpandedParameterPack)
1053 : Expr(LambdaExprClass, T, VK_RValue, OK_Ordinary, T->isDependentType(),
1054 T->isDependentType(), T->isDependentType(),
1055 ContainsUnexpandedParameterPack),
1056 IntroducerRange(IntroducerRange), CaptureDefaultLoc(CaptureDefaultLoc),
1057 NumCaptures(Captures.size()), CaptureDefault(CaptureDefault),
1058 ExplicitParams(ExplicitParams), ExplicitResultType(ExplicitResultType),
1059 ClosingBrace(ClosingBrace) {
1060 assert(CaptureInits.size() == Captures.size() && "Wrong number of arguments")((CaptureInits.size() == Captures.size() && "Wrong number of arguments"
) ? static_cast<void> (0) : __assert_fail ("CaptureInits.size() == Captures.size() && \"Wrong number of arguments\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 1060, __PRETTY_FUNCTION__))
;
1061 CXXRecordDecl *Class = getLambdaClass();
1062 CXXRecordDecl::LambdaDefinitionData &Data = Class->getLambdaData();
1063
1064 // FIXME: Propagate "has unexpanded parameter pack" bit.
1065
1066 // Copy captures.
1067 const ASTContext &Context = Class->getASTContext();
1068 Data.NumCaptures = NumCaptures;
1069 Data.NumExplicitCaptures = 0;
1070 Data.Captures =
1071 (LambdaCapture *)Context.Allocate(sizeof(LambdaCapture) * NumCaptures);
1072 LambdaCapture *ToCapture = Data.Captures;
1073 for (unsigned I = 0, N = Captures.size(); I != N; ++I) {
1074 if (Captures[I].isExplicit())
1075 ++Data.NumExplicitCaptures;
1076
1077 *ToCapture++ = Captures[I];
1078 }
1079
1080 // Copy initialization expressions for the non-static data members.
1081 Stmt **Stored = getStoredStmts();
1082 for (unsigned I = 0, N = CaptureInits.size(); I != N; ++I)
1083 *Stored++ = CaptureInits[I];
1084
1085 // Copy the body of the lambda.
1086 *Stored++ = getCallOperator()->getBody();
1087}
1088
1089LambdaExpr *LambdaExpr::Create(
1090 const ASTContext &Context, CXXRecordDecl *Class,
1091 SourceRange IntroducerRange, LambdaCaptureDefault CaptureDefault,
1092 SourceLocation CaptureDefaultLoc, ArrayRef<LambdaCapture> Captures,
1093 bool ExplicitParams, bool ExplicitResultType, ArrayRef<Expr *> CaptureInits,
1094 SourceLocation ClosingBrace, bool ContainsUnexpandedParameterPack) {
1095 // Determine the type of the expression (i.e., the type of the
1096 // function object we're creating).
1097 QualType T = Context.getTypeDeclType(Class);
1098
1099 unsigned Size = totalSizeToAlloc<Stmt *>(Captures.size() + 1);
1100 void *Mem = Context.Allocate(Size);
1101 return new (Mem)
1102 LambdaExpr(T, IntroducerRange, CaptureDefault, CaptureDefaultLoc,
1103 Captures, ExplicitParams, ExplicitResultType, CaptureInits,
1104 ClosingBrace, ContainsUnexpandedParameterPack);
1105}
1106
1107LambdaExpr *LambdaExpr::CreateDeserialized(const ASTContext &C,
1108 unsigned NumCaptures) {
1109 unsigned Size = totalSizeToAlloc<Stmt *>(NumCaptures + 1);
1110 void *Mem = C.Allocate(Size);
1111 return new (Mem) LambdaExpr(EmptyShell(), NumCaptures);
1112}
1113
1114bool LambdaExpr::isInitCapture(const LambdaCapture *C) const {
1115 return (C->capturesVariable() && C->getCapturedVar()->isInitCapture() &&
1116 (getCallOperator() == C->getCapturedVar()->getDeclContext()));
1117}
1118
1119LambdaExpr::capture_iterator LambdaExpr::capture_begin() const {
1120 return getLambdaClass()->getLambdaData().Captures;
1121}
1122
1123LambdaExpr::capture_iterator LambdaExpr::capture_end() const {
1124 return capture_begin() + NumCaptures;
1125}
1126
1127LambdaExpr::capture_range LambdaExpr::captures() const {
1128 return capture_range(capture_begin(), capture_end());
1129}
1130
1131LambdaExpr::capture_iterator LambdaExpr::explicit_capture_begin() const {
1132 return capture_begin();
1133}
1134
1135LambdaExpr::capture_iterator LambdaExpr::explicit_capture_end() const {
1136 struct CXXRecordDecl::LambdaDefinitionData &Data
1137 = getLambdaClass()->getLambdaData();
1138 return Data.Captures + Data.NumExplicitCaptures;
1139}
1140
1141LambdaExpr::capture_range LambdaExpr::explicit_captures() const {
1142 return capture_range(explicit_capture_begin(), explicit_capture_end());
1143}
1144
1145LambdaExpr::capture_iterator LambdaExpr::implicit_capture_begin() const {
1146 return explicit_capture_end();
1147}
1148
1149LambdaExpr::capture_iterator LambdaExpr::implicit_capture_end() const {
1150 return capture_end();
1151}
1152
1153LambdaExpr::capture_range LambdaExpr::implicit_captures() const {
1154 return capture_range(implicit_capture_begin(), implicit_capture_end());
1155}
1156
1157CXXRecordDecl *LambdaExpr::getLambdaClass() const {
1158 return getType()->getAsCXXRecordDecl();
1159}
1160
1161CXXMethodDecl *LambdaExpr::getCallOperator() const {
1162 CXXRecordDecl *Record = getLambdaClass();
1163 return Record->getLambdaCallOperator();
1164}
1165
1166TemplateParameterList *LambdaExpr::getTemplateParameterList() const {
1167 CXXRecordDecl *Record = getLambdaClass();
1168 return Record->getGenericLambdaTemplateParameterList();
1169
1170}
1171
1172CompoundStmt *LambdaExpr::getBody() const {
1173 // FIXME: this mutation in getBody is bogus. It should be
1174 // initialized in ASTStmtReader::VisitLambdaExpr, but for reasons I
1175 // don't understand, that doesn't work.
1176 if (!getStoredStmts()[NumCaptures])
1177 *const_cast<Stmt **>(&getStoredStmts()[NumCaptures]) =
1178 getCallOperator()->getBody();
1179
1180 return static_cast<CompoundStmt *>(getStoredStmts()[NumCaptures]);
1181}
1182
1183bool LambdaExpr::isMutable() const {
1184 return !getCallOperator()->isConst();
1185}
1186
1187ExprWithCleanups::ExprWithCleanups(Expr *subexpr,
1188 bool CleanupsHaveSideEffects,
1189 ArrayRef<CleanupObject> objects)
1190 : FullExpr(ExprWithCleanupsClass, subexpr) {
1191 ExprWithCleanupsBits.CleanupsHaveSideEffects = CleanupsHaveSideEffects;
1192 ExprWithCleanupsBits.NumObjects = objects.size();
1193 for (unsigned i = 0, e = objects.size(); i != e; ++i)
1194 getTrailingObjects<CleanupObject>()[i] = objects[i];
1195}
1196
1197ExprWithCleanups *ExprWithCleanups::Create(const ASTContext &C, Expr *subexpr,
1198 bool CleanupsHaveSideEffects,
1199 ArrayRef<CleanupObject> objects) {
1200 void *buffer = C.Allocate(totalSizeToAlloc<CleanupObject>(objects.size()),
1201 alignof(ExprWithCleanups));
1202 return new (buffer)
1203 ExprWithCleanups(subexpr, CleanupsHaveSideEffects, objects);
1204}
1205
1206ExprWithCleanups::ExprWithCleanups(EmptyShell empty, unsigned numObjects)
1207 : FullExpr(ExprWithCleanupsClass, empty) {
1208 ExprWithCleanupsBits.NumObjects = numObjects;
1209}
1210
1211ExprWithCleanups *ExprWithCleanups::Create(const ASTContext &C,
1212 EmptyShell empty,
1213 unsigned numObjects) {
1214 void *buffer = C.Allocate(totalSizeToAlloc<CleanupObject>(numObjects),
1215 alignof(ExprWithCleanups));
1216 return new (buffer) ExprWithCleanups(empty, numObjects);
1217}
1218
1219CXXUnresolvedConstructExpr::CXXUnresolvedConstructExpr(TypeSourceInfo *Type,
1220 SourceLocation LParenLoc,
1221 ArrayRef<Expr*> Args,
1222 SourceLocation RParenLoc)
1223 : Expr(CXXUnresolvedConstructExprClass,
1224 Type->getType().getNonReferenceType(),
1225 (Type->getType()->isLValueReferenceType()
1226 ? VK_LValue
1227 : Type->getType()->isRValueReferenceType() ? VK_XValue
1228 : VK_RValue),
1229 OK_Ordinary,
1230 Type->getType()->isDependentType() ||
1231 Type->getType()->getContainedDeducedType(),
1232 true, true, Type->getType()->containsUnexpandedParameterPack()),
1233 Type(Type), LParenLoc(LParenLoc), RParenLoc(RParenLoc),
1234 NumArgs(Args.size()) {
1235 auto **StoredArgs = getTrailingObjects<Expr *>();
1236 for (unsigned I = 0; I != Args.size(); ++I) {
1237 if (Args[I]->containsUnexpandedParameterPack())
1238 ExprBits.ContainsUnexpandedParameterPack = true;
1239
1240 StoredArgs[I] = Args[I];
1241 }
1242}
1243
1244CXXUnresolvedConstructExpr *
1245CXXUnresolvedConstructExpr::Create(const ASTContext &C,
1246 TypeSourceInfo *Type,
1247 SourceLocation LParenLoc,
1248 ArrayRef<Expr*> Args,
1249 SourceLocation RParenLoc) {
1250 void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(Args.size()));
1251 return new (Mem) CXXUnresolvedConstructExpr(Type, LParenLoc, Args, RParenLoc);
1252}
1253
1254CXXUnresolvedConstructExpr *
1255CXXUnresolvedConstructExpr::CreateEmpty(const ASTContext &C, unsigned NumArgs) {
1256 Stmt::EmptyShell Empty;
1257 void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(NumArgs));
1258 return new (Mem) CXXUnresolvedConstructExpr(Empty, NumArgs);
1259}
1260
1261SourceLocation CXXUnresolvedConstructExpr::getBeginLoc() const {
1262 return Type->getTypeLoc().getBeginLoc();
1263}
1264
1265CXXDependentScopeMemberExpr::CXXDependentScopeMemberExpr(
1266 const ASTContext &C, Expr *Base, QualType BaseType, bool IsArrow,
1267 SourceLocation OperatorLoc, NestedNameSpecifierLoc QualifierLoc,
1268 SourceLocation TemplateKWLoc, NamedDecl *FirstQualifierFoundInScope,
1269 DeclarationNameInfo MemberNameInfo,
1270 const TemplateArgumentListInfo *TemplateArgs)
1271 : Expr(CXXDependentScopeMemberExprClass, C.DependentTy, VK_LValue,
1272 OK_Ordinary, true, true, true,
1273 ((Base && Base->containsUnexpandedParameterPack()) ||
1274 (QualifierLoc &&
1275 QualifierLoc.getNestedNameSpecifier()
1276 ->containsUnexpandedParameterPack()) ||
1277 MemberNameInfo.containsUnexpandedParameterPack())),
1278 Base(Base), BaseType(BaseType), IsArrow(IsArrow),
1279 HasTemplateKWAndArgsInfo(TemplateArgs != nullptr ||
1280 TemplateKWLoc.isValid()),
1281 OperatorLoc(OperatorLoc), QualifierLoc(QualifierLoc),
1282 FirstQualifierFoundInScope(FirstQualifierFoundInScope),
1283 MemberNameInfo(MemberNameInfo) {
1284 if (TemplateArgs) {
1285 bool Dependent = true;
1286 bool InstantiationDependent = true;
1287 bool ContainsUnexpandedParameterPack = false;
1288 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
1289 TemplateKWLoc, *TemplateArgs, getTrailingObjects<TemplateArgumentLoc>(),
1290 Dependent, InstantiationDependent, ContainsUnexpandedParameterPack);
1291 if (ContainsUnexpandedParameterPack)
1292 ExprBits.ContainsUnexpandedParameterPack = true;
1293 } else if (TemplateKWLoc.isValid()) {
1294 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
1295 TemplateKWLoc);
1296 }
1297}
1298
1299CXXDependentScopeMemberExpr *
1300CXXDependentScopeMemberExpr::Create(const ASTContext &C,
1301 Expr *Base, QualType BaseType, bool IsArrow,
1302 SourceLocation OperatorLoc,
1303 NestedNameSpecifierLoc QualifierLoc,
1304 SourceLocation TemplateKWLoc,
1305 NamedDecl *FirstQualifierFoundInScope,
1306 DeclarationNameInfo MemberNameInfo,
1307 const TemplateArgumentListInfo *TemplateArgs) {
1308 bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid();
1309 unsigned NumTemplateArgs = TemplateArgs ? TemplateArgs->size() : 0;
1310 std::size_t Size =
1311 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1312 HasTemplateKWAndArgsInfo, NumTemplateArgs);
1313
1314 void *Mem = C.Allocate(Size, alignof(CXXDependentScopeMemberExpr));
1315 return new (Mem) CXXDependentScopeMemberExpr(C, Base, BaseType,
1316 IsArrow, OperatorLoc,
1317 QualifierLoc,
1318 TemplateKWLoc,
1319 FirstQualifierFoundInScope,
1320 MemberNameInfo, TemplateArgs);
1321}
1322
1323CXXDependentScopeMemberExpr *
1324CXXDependentScopeMemberExpr::CreateEmpty(const ASTContext &C,
1325 bool HasTemplateKWAndArgsInfo,
1326 unsigned NumTemplateArgs) {
1327 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo)((NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo) ? static_cast
<void> (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 1327, __PRETTY_FUNCTION__))
;
1328 std::size_t Size =
1329 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1330 HasTemplateKWAndArgsInfo, NumTemplateArgs);
1331 void *Mem = C.Allocate(Size, alignof(CXXDependentScopeMemberExpr));
1332 auto *E =
1333 new (Mem) CXXDependentScopeMemberExpr(C, nullptr, QualType(),
1334 false, SourceLocation(),
1335 NestedNameSpecifierLoc(),
1336 SourceLocation(), nullptr,
1337 DeclarationNameInfo(), nullptr);
1338 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
1339 return E;
1340}
1341
1342bool CXXDependentScopeMemberExpr::isImplicitAccess() const {
1343 if (!Base)
1344 return true;
1345
1346 return cast<Expr>(Base)->isImplicitCXXThis();
1347}
1348
1349static bool hasOnlyNonStaticMemberFunctions(UnresolvedSetIterator begin,
1350 UnresolvedSetIterator end) {
1351 do {
1352 NamedDecl *decl = *begin;
1353 if (isa<UnresolvedUsingValueDecl>(decl))
1354 return false;
1355
1356 // Unresolved member expressions should only contain methods and
1357 // method templates.
1358 if (cast<CXXMethodDecl>(decl->getUnderlyingDecl()->getAsFunction())
1359 ->isStatic())
1360 return false;
1361 } while (++begin != end);
1362
1363 return true;
1364}
1365
1366UnresolvedMemberExpr::UnresolvedMemberExpr(const ASTContext &C,
1367 bool HasUnresolvedUsing,
1368 Expr *Base, QualType BaseType,
1369 bool IsArrow,
1370 SourceLocation OperatorLoc,
1371 NestedNameSpecifierLoc QualifierLoc,
1372 SourceLocation TemplateKWLoc,
1373 const DeclarationNameInfo &MemberNameInfo,
1374 const TemplateArgumentListInfo *TemplateArgs,
1375 UnresolvedSetIterator Begin,
1376 UnresolvedSetIterator End)
1377 : OverloadExpr(
1378 UnresolvedMemberExprClass, C, QualifierLoc, TemplateKWLoc,
1379 MemberNameInfo, TemplateArgs, Begin, End,
1380 // Dependent
1381 ((Base && Base->isTypeDependent()) || BaseType->isDependentType()),
1382 ((Base && Base->isInstantiationDependent()) ||
1383 BaseType->isInstantiationDependentType()),
1384 // Contains unexpanded parameter pack
1385 ((Base && Base->containsUnexpandedParameterPack()) ||
1386 BaseType->containsUnexpandedParameterPack())),
1387 IsArrow(IsArrow), HasUnresolvedUsing(HasUnresolvedUsing), Base(Base),
1388 BaseType(BaseType), OperatorLoc(OperatorLoc) {
1389 // Check whether all of the members are non-static member functions,
1390 // and if so, mark give this bound-member type instead of overload type.
1391 if (hasOnlyNonStaticMemberFunctions(Begin, End))
1392 setType(C.BoundMemberTy);
1393}
1394
1395bool UnresolvedMemberExpr::isImplicitAccess() const {
1396 if (!Base)
1397 return true;
1398
1399 return cast<Expr>(Base)->isImplicitCXXThis();
1400}
1401
1402UnresolvedMemberExpr *UnresolvedMemberExpr::Create(
1403 const ASTContext &C, bool HasUnresolvedUsing, Expr *Base, QualType BaseType,
1404 bool IsArrow, SourceLocation OperatorLoc,
1405 NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateKWLoc,
1406 const DeclarationNameInfo &MemberNameInfo,
1407 const TemplateArgumentListInfo *TemplateArgs, UnresolvedSetIterator Begin,
1408 UnresolvedSetIterator End) {
1409 bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid();
1410 std::size_t Size =
1411 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1412 HasTemplateKWAndArgsInfo, TemplateArgs ? TemplateArgs->size() : 0);
1413
1414 void *Mem = C.Allocate(Size, alignof(UnresolvedMemberExpr));
1415 return new (Mem) UnresolvedMemberExpr(
1416 C, HasUnresolvedUsing, Base, BaseType, IsArrow, OperatorLoc, QualifierLoc,
1417 TemplateKWLoc, MemberNameInfo, TemplateArgs, Begin, End);
1418}
1419
1420UnresolvedMemberExpr *
1421UnresolvedMemberExpr::CreateEmpty(const ASTContext &C,
1422 bool HasTemplateKWAndArgsInfo,
1423 unsigned NumTemplateArgs) {
1424 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo)((NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo) ? static_cast
<void> (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 1424, __PRETTY_FUNCTION__))
;
1425 std::size_t Size =
1426 totalSizeToAlloc<ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
1427 HasTemplateKWAndArgsInfo, NumTemplateArgs);
1428
1429 void *Mem = C.Allocate(Size, alignof(UnresolvedMemberExpr));
1430 auto *E = new (Mem) UnresolvedMemberExpr(EmptyShell());
1431 E->HasTemplateKWAndArgsInfo = HasTemplateKWAndArgsInfo;
1432 return E;
1433}
1434
1435CXXRecordDecl *UnresolvedMemberExpr::getNamingClass() const {
1436 // Unlike for UnresolvedLookupExpr, it is very easy to re-derive this.
1437
1438 // If there was a nested name specifier, it names the naming class.
1439 // It can't be dependent: after all, we were actually able to do the
1440 // lookup.
1441 CXXRecordDecl *Record = nullptr;
1442 auto *NNS = getQualifier();
1443 if (NNS && NNS->getKind() != NestedNameSpecifier::Super) {
1444 const Type *T = getQualifier()->getAsType();
1445 assert(T && "qualifier in member expression does not name type")((T && "qualifier in member expression does not name type"
) ? static_cast<void> (0) : __assert_fail ("T && \"qualifier in member expression does not name type\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 1445, __PRETTY_FUNCTION__))
;
1446 Record = T->getAsCXXRecordDecl();
1447 assert(Record && "qualifier in member expression does not name record")((Record && "qualifier in member expression does not name record"
) ? static_cast<void> (0) : __assert_fail ("Record && \"qualifier in member expression does not name record\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 1447, __PRETTY_FUNCTION__))
;
1448 }
1449 // Otherwise the naming class must have been the base class.
1450 else {
1451 QualType BaseType = getBaseType().getNonReferenceType();
1452 if (isArrow()) {
1453 const auto *PT = BaseType->getAs<PointerType>();
1454 assert(PT && "base of arrow member access is not pointer")((PT && "base of arrow member access is not pointer")
? static_cast<void> (0) : __assert_fail ("PT && \"base of arrow member access is not pointer\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 1454, __PRETTY_FUNCTION__))
;
1455 BaseType = PT->getPointeeType();
1456 }
1457
1458 Record = BaseType->getAsCXXRecordDecl();
1459 assert(Record && "base of member expression does not name record")((Record && "base of member expression does not name record"
) ? static_cast<void> (0) : __assert_fail ("Record && \"base of member expression does not name record\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/AST/ExprCXX.cpp"
, 1459, __PRETTY_FUNCTION__))
;
1460 }
1461
1462 return Record;
1463}
1464
1465SizeOfPackExpr *
1466SizeOfPackExpr::Create(ASTContext &Context, SourceLocation OperatorLoc,
1467 NamedDecl *Pack, SourceLocation PackLoc,
1468 SourceLocation RParenLoc,
1469 Optional<unsigned> Length,
1470 ArrayRef<TemplateArgument> PartialArgs) {
1471 void *Storage =
1472 Context.Allocate(totalSizeToAlloc<TemplateArgument>(PartialArgs.size()));
1473 return new (Storage) SizeOfPackExpr(Context.getSizeType(), OperatorLoc, Pack,
1474 PackLoc, RParenLoc, Length, PartialArgs);
1475}
1476
1477SizeOfPackExpr *SizeOfPackExpr::CreateDeserialized(ASTContext &Context,
1478 unsigned NumPartialArgs) {
1479 void *Storage =
1480 Context.Allocate(totalSizeToAlloc<TemplateArgument>(NumPartialArgs));
1481 return new (Storage) SizeOfPackExpr(EmptyShell(), NumPartialArgs);
1482}
1483
1484SubstNonTypeTemplateParmPackExpr::
1485SubstNonTypeTemplateParmPackExpr(QualType T,
1486 ExprValueKind ValueKind,
1487 NonTypeTemplateParmDecl *Param,
1488 SourceLocation NameLoc,
1489 const TemplateArgument &ArgPack)
1490 : Expr(SubstNonTypeTemplateParmPackExprClass, T, ValueKind, OK_Ordinary,
1491 true, true, true, true),
1492 Param(Param), Arguments(ArgPack.pack_begin()),
1493 NumArguments(ArgPack.pack_size()), NameLoc(NameLoc) {}
1494
1495TemplateArgument SubstNonTypeTemplateParmPackExpr::getArgumentPack() const {
1496 return TemplateArgument(llvm::makeArrayRef(Arguments, NumArguments));
1497}
1498
1499FunctionParmPackExpr::FunctionParmPackExpr(QualType T, ParmVarDecl *ParamPack,
1500 SourceLocation NameLoc,
1501 unsigned NumParams,
1502 ParmVarDecl *const *Params)
1503 : Expr(FunctionParmPackExprClass, T, VK_LValue, OK_Ordinary, true, true,
1504 true, true),
1505 ParamPack(ParamPack), NameLoc(NameLoc), NumParameters(NumParams) {
1506 if (Params)
1507 std::uninitialized_copy(Params, Params + NumParams,
1508 getTrailingObjects<ParmVarDecl *>());
1509}
1510
1511FunctionParmPackExpr *
1512FunctionParmPackExpr::Create(const ASTContext &Context, QualType T,
1513 ParmVarDecl *ParamPack, SourceLocation NameLoc,
1514 ArrayRef<ParmVarDecl *> Params) {
1515 return new (Context.Allocate(totalSizeToAlloc<ParmVarDecl *>(Params.size())))
1516 FunctionParmPackExpr(T, ParamPack, NameLoc, Params.size(), Params.data());
1517}
1518
1519FunctionParmPackExpr *
1520FunctionParmPackExpr::CreateEmpty(const ASTContext &Context,
1521 unsigned NumParams) {
1522 return new (Context.Allocate(totalSizeToAlloc<ParmVarDecl *>(NumParams)))
1523 FunctionParmPackExpr(QualType(), nullptr, SourceLocation(), 0, nullptr);
1524}
1525
1526void MaterializeTemporaryExpr::setExtendingDecl(const ValueDecl *ExtendedBy,
1527 unsigned ManglingNumber) {
1528 // We only need extra state if we have to remember more than just the Stmt.
1529 if (!ExtendedBy)
1
Assuming 'ExtendedBy' is non-null
2
Taking false branch
1530 return;
1531
1532 // We may need to allocate extra storage for the mangling number and the
1533 // extended-by ValueDecl.
1534 if (!State.is<ExtraState *>()) {
3
Taking true branch
1535 auto *ES = new (ExtendedBy->getASTContext()) ExtraState;
4
'ES' initialized to a null pointer value
1536 ES->Temporary = State.get<Stmt *>();
5
Access to field 'Temporary' results in a dereference of a null pointer (loaded from variable 'ES')
1537 State = ES;
1538 }
1539
1540 auto ES = State.get<ExtraState *>();
1541 ES->ExtendingDecl = ExtendedBy;
1542 ES->ManglingNumber = ManglingNumber;
1543}
1544
1545TypeTraitExpr::TypeTraitExpr(QualType T, SourceLocation Loc, TypeTrait Kind,
1546 ArrayRef<TypeSourceInfo *> Args,
1547 SourceLocation RParenLoc,
1548 bool Value)
1549 : Expr(TypeTraitExprClass, T, VK_RValue, OK_Ordinary,
1550 /*TypeDependent=*/false,
1551 /*ValueDependent=*/false,
1552 /*InstantiationDependent=*/false,
1553 /*ContainsUnexpandedParameterPack=*/false),
1554 Loc(Loc), RParenLoc(RParenLoc) {
1555 TypeTraitExprBits.Kind = Kind;
1556 TypeTraitExprBits.Value = Value;
1557 TypeTraitExprBits.NumArgs = Args.size();
1558
1559 auto **ToArgs = getTrailingObjects<TypeSourceInfo *>();
1560
1561 for (unsigned I = 0, N = Args.size(); I != N; ++I) {
1562 if (Args[I]->getType()->isDependentType())
1563 setValueDependent(true);
1564 if (Args[I]->getType()->isInstantiationDependentType())
1565 setInstantiationDependent(true);
1566 if (Args[I]->getType()->containsUnexpandedParameterPack())
1567 setContainsUnexpandedParameterPack(true);
1568
1569 ToArgs[I] = Args[I];
1570 }
1571}
1572
1573TypeTraitExpr *TypeTraitExpr::Create(const ASTContext &C, QualType T,
1574 SourceLocation Loc,
1575 TypeTrait Kind,
1576 ArrayRef<TypeSourceInfo *> Args,
1577 SourceLocation RParenLoc,
1578 bool Value) {
1579 void *Mem = C.Allocate(totalSizeToAlloc<TypeSourceInfo *>(Args.size()));
1580 return new (Mem) TypeTraitExpr(T, Loc, Kind, Args, RParenLoc, Value);
1581}
1582
1583TypeTraitExpr *TypeTraitExpr::CreateDeserialized(const ASTContext &C,
1584 unsigned NumArgs) {
1585 void *Mem = C.Allocate(totalSizeToAlloc<TypeSourceInfo *>(NumArgs));
1586 return new (Mem) TypeTraitExpr(EmptyShell());
1587}
1588
1589CUDAKernelCallExpr::CUDAKernelCallExpr(Expr *Fn, CallExpr *Config,
1590 ArrayRef<Expr *> Args, QualType Ty,
1591 ExprValueKind VK, SourceLocation RP,
1592 unsigned MinNumArgs)
1593 : CallExpr(CUDAKernelCallExprClass, Fn, /*PreArgs=*/Config, Args, Ty, VK,
1594 RP, MinNumArgs, NotADL) {}
1595
1596CUDAKernelCallExpr::CUDAKernelCallExpr(unsigned NumArgs, EmptyShell Empty)
1597 : CallExpr(CUDAKernelCallExprClass, /*NumPreArgs=*/END_PREARG, NumArgs,
1598 Empty) {}
1599
1600CUDAKernelCallExpr *
1601CUDAKernelCallExpr::Create(const ASTContext &Ctx, Expr *Fn, CallExpr *Config,
1602 ArrayRef<Expr *> Args, QualType Ty, ExprValueKind VK,
1603 SourceLocation RP, unsigned MinNumArgs) {
1604 // Allocate storage for the trailing objects of CallExpr.
1605 unsigned NumArgs = std::max<unsigned>(Args.size(), MinNumArgs);
1606 unsigned SizeOfTrailingObjects =
1607 CallExpr::sizeOfTrailingObjects(/*NumPreArgs=*/END_PREARG, NumArgs);
1608 void *Mem = Ctx.Allocate(sizeof(CUDAKernelCallExpr) + SizeOfTrailingObjects,
1609 alignof(CUDAKernelCallExpr));
1610 return new (Mem) CUDAKernelCallExpr(Fn, Config, Args, Ty, VK, RP, MinNumArgs);
1611}
1612
1613CUDAKernelCallExpr *CUDAKernelCallExpr::CreateEmpty(const ASTContext &Ctx,
1614 unsigned NumArgs,
1615 EmptyShell Empty) {
1616 // Allocate storage for the trailing objects of CallExpr.
1617 unsigned SizeOfTrailingObjects =
1618 CallExpr::sizeOfTrailingObjects(/*NumPreArgs=*/END_PREARG, NumArgs);
1619 void *Mem = Ctx.Allocate(sizeof(CUDAKernelCallExpr) + SizeOfTrailingObjects,
1620 alignof(CUDAKernelCallExpr));
1621 return new (Mem) CUDAKernelCallExpr(NumArgs, Empty);
1622}