clang 8.0.0

Expr.cpp
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1 //===--- Expr.cpp - 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 Expr class and subclasses.
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/DeclObjC.h"
18 #include "clang/AST/DeclTemplate.h"
19 #include "clang/AST/EvaluatedExprVisitor.h"
20 #include "clang/AST/Expr.h"
21 #include "clang/AST/ExprCXX.h"
22 #include "clang/AST/Mangle.h"
23 #include "clang/AST/RecordLayout.h"
24 #include "clang/AST/StmtVisitor.h"
25 #include "clang/Basic/Builtins.h"
26 #include "clang/Basic/CharInfo.h"
27 #include "clang/Basic/SourceManager.h"
28 #include "clang/Basic/TargetInfo.h"
29 #include "clang/Lex/Lexer.h"
30 #include "clang/Lex/LiteralSupport.h"
31 #include "llvm/Support/ErrorHandling.h"
32 #include "llvm/Support/raw_ostream.h"
33 #include <algorithm>
34 #include <cstring>
35 using namespace clang;
36
37 const Expr *Expr::getBestDynamicClassTypeExpr() const {
38 const Expr *E = this;
39 while (true) {
40 E = E->ignoreParenBaseCasts();
41
42 // Follow the RHS of a comma operator.
43 if (auto *BO = dyn_cast<BinaryOperator>(E)) {
44 if (BO->getOpcode() == BO_Comma) {
45 E = BO->getRHS();
46 continue;
47 }
48 }
49
50 // Step into initializer for materialized temporaries.
51 if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E)) {
52 E = MTE->GetTemporaryExpr();
53 continue;
54 }
55
56 break;
57 }
58
59 return E;
60 }
61
62 const CXXRecordDecl *Expr::getBestDynamicClassType() const {
63 const Expr *E = getBestDynamicClassTypeExpr();
64 QualType DerivedType = E->getType();
65 if (const PointerType *PTy = DerivedType->getAs<PointerType>())
66 DerivedType = PTy->getPointeeType();
67
68 if (DerivedType->isDependentType())
69 return nullptr;
70
71 const RecordType *Ty = DerivedType->castAs<RecordType>();
72 Decl *D = Ty->getDecl();
73 return cast<CXXRecordDecl>(D);
74 }
75
76 const Expr *Expr::skipRValueSubobjectAdjustments(
77 SmallVectorImpl<const Expr *> &CommaLHSs,
78 SmallVectorImpl<SubobjectAdjustment> &Adjustments) const {
79 const Expr *E = this;
80 while (true) {
81 E = E->IgnoreParens();
82
83 if (const CastExpr *CE = dyn_cast<CastExpr>(E)) {
84 if ((CE->getCastKind() == CK_DerivedToBase ||
85 CE->getCastKind() == CK_UncheckedDerivedToBase) &&
86 E->getType()->isRecordType()) {
87 E = CE->getSubExpr();
88 CXXRecordDecl *Derived
89 = cast<CXXRecordDecl>(E->getType()->getAs<RecordType>()->getDecl());
90 Adjustments.push_back(SubobjectAdjustment(CE, Derived));
91 continue;
92 }
93
94 if (CE->getCastKind() == CK_NoOp) {
95 E = CE->getSubExpr();
96 continue;
97 }
98 } else if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) {
99 if (!ME->isArrow()) {
100 assert(ME->getBase()->getType()->isRecordType());
101 if (FieldDecl *Field = dyn_cast<FieldDecl>(ME->getMemberDecl())) {
102 if (!Field->isBitField() && !Field->getType()->isReferenceType()) {
103 E = ME->getBase();
104 Adjustments.push_back(SubobjectAdjustment(Field));
105 continue;
106 }
107 }
108 }
109 } else if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) {
110 if (BO->getOpcode() == BO_PtrMemD) {
111 assert(BO->getRHS()->isRValue());
112 E = BO->getLHS();
113 const MemberPointerType *MPT =
114 BO->getRHS()->getType()->getAs<MemberPointerType>();
115 Adjustments.push_back(SubobjectAdjustment(MPT, BO->getRHS()));
116 continue;
117 } else if (BO->getOpcode() == BO_Comma) {
118 CommaLHSs.push_back(BO->getLHS());
119 E = BO->getRHS();
120 continue;
121 }
122 }
123
124 // Nothing changed.
125 break;
126 }
127 return E;
128 }
129
130 /// isKnownToHaveBooleanValue - Return true if this is an integer expression
131 /// that is known to return 0 or 1. This happens for _Bool/bool expressions
132 /// but also int expressions which are produced by things like comparisons in
133 /// C.
134 bool Expr::isKnownToHaveBooleanValue() const {
135 const Expr *E = IgnoreParens();
136
137 // If this value has _Bool type, it is obvious 0/1.
138 if (E->getType()->isBooleanType()) return true;
139 // If this is a non-scalar-integer type, we don't care enough to try.
140 if (!E->getType()->isIntegralOrEnumerationType()) return false;
141
142 if (const UnaryOperator *UO = dyn_cast<UnaryOperator>(E)) {
143 switch (UO->getOpcode()) {
144 case UO_Plus:
145 return UO->getSubExpr()->isKnownToHaveBooleanValue();
146 case UO_LNot:
147 return true;
148 default:
149 return false;
150 }
151 }
152
153 // Only look through implicit casts. If the user writes
154 // '(int) (a && b)' treat it as an arbitrary int.
155 if (const ImplicitCastExpr *CE = dyn_cast<ImplicitCastExpr>(E))
156 return CE->getSubExpr()->isKnownToHaveBooleanValue();
157
158 if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) {
159 switch (BO->getOpcode()) {
160 default: return false;
161 case BO_LT: // Relational operators.
162 case BO_GT:
163 case BO_LE:
164 case BO_GE:
165 case BO_EQ: // Equality operators.
166 case BO_NE:
167 case BO_LAnd: // AND operator.
168 case BO_LOr: // Logical OR operator.
169 return true;
170
171 case BO_And: // Bitwise AND operator.
172 case BO_Xor: // Bitwise XOR operator.
173 case BO_Or: // Bitwise OR operator.
174 // Handle things like (x==2)|(y==12).
175 return BO->getLHS()->isKnownToHaveBooleanValue() &&
176 BO->getRHS()->isKnownToHaveBooleanValue();
177
178 case BO_Comma:
179 case BO_Assign:
180 return BO->getRHS()->isKnownToHaveBooleanValue();
181 }
182 }
183
184 if (const ConditionalOperator *CO = dyn_cast<ConditionalOperator>(E))
185 return CO->getTrueExpr()->isKnownToHaveBooleanValue() &&
186 CO->getFalseExpr()->isKnownToHaveBooleanValue();
187
188 return false;
189 }
190
191 // Amusing macro metaprogramming hack: check whether a class provides
192 // a more specific implementation of getExprLoc().
193 //
194 // See also Stmt.cpp:{getBeginLoc(),getEndLoc()}.
195 namespace {
196 /// This implementation is used when a class provides a custom
197 /// implementation of getExprLoc.
198 template <class E, class T>
199 SourceLocation getExprLocImpl(const Expr *expr,
200 SourceLocation (T::*v)() const) {
201 return static_cast<const E*>(expr)->getExprLoc();
202 }
203
204 /// This implementation is used when a class doesn't provide
205 /// a custom implementation of getExprLoc. Overload resolution
206 /// should pick it over the implementation above because it's
207 /// more specialized according to function template partial ordering.
208 template <class E>
209 SourceLocation getExprLocImpl(const Expr *expr,
210 SourceLocation (Expr::*v)() const) {
211 return static_cast<const E *>(expr)->getBeginLoc();
212 }
213 }
214
215 SourceLocation Expr::getExprLoc() const {
216 switch (getStmtClass()) {
217 case Stmt::NoStmtClass: llvm_unreachable("statement without class");
218 #define ABSTRACT_STMT(type)
219 #define STMT(type, base) \
220 case Stmt::type##Class: break;
221 #define EXPR(type, base) \
222 case Stmt::type##Class: return getExprLocImpl<type>(this, &type::getExprLoc);
223 #include "clang/AST/StmtNodes.inc"
224 }
225 llvm_unreachable("unknown expression kind");
226 }
227
228 //===----------------------------------------------------------------------===//
229 // Primary Expressions.
230 //===----------------------------------------------------------------------===//
231
232 /// Compute the type-, value-, and instantiation-dependence of a
233 /// declaration reference
234 /// based on the declaration being referenced.
235 static void computeDeclRefDependence(const ASTContext &Ctx, NamedDecl *D,
236 QualType T, bool &TypeDependent,
237 bool &ValueDependent,
238 bool &InstantiationDependent) {
239 TypeDependent = false;
240 ValueDependent = false;
241 InstantiationDependent = false;
242
243 // (TD) C++ [temp.dep.expr]p3:
244 // An id-expression is type-dependent if it contains:
245 //
246 // and
247 //
248 // (VD) C++ [temp.dep.constexpr]p2:
249 // An identifier is value-dependent if it is:
250
251 // (TD) - an identifier that was declared with dependent type
252 // (VD) - a name declared with a dependent type,
253 if (T->isDependentType()) {
254 TypeDependent = true;
255 ValueDependent = true;
256 InstantiationDependent = true;
257 return;
258 } else if (T->isInstantiationDependentType()) {
259 InstantiationDependent = true;
260 }
261
262 // (TD) - a conversion-function-id that specifies a dependent type
263 if (D->getDeclName().getNameKind()
264 == DeclarationName::CXXConversionFunctionName) {
265 QualType T = D->getDeclName().getCXXNameType();
266 if (T->isDependentType()) {
267 TypeDependent = true;
268 ValueDependent = true;
269 InstantiationDependent = true;
270 return;
271 }
272
273 if (T->isInstantiationDependentType())
274 InstantiationDependent = true;
275 }
276
277 // (VD) - the name of a non-type template parameter,
278 if (isa<NonTypeTemplateParmDecl>(D)) {
279 ValueDependent = true;
280 InstantiationDependent = true;
281 return;
282 }
283
284 // (VD) - a constant with integral or enumeration type and is
285 // initialized with an expression that is value-dependent.
286 // (VD) - a constant with literal type and is initialized with an
287 // expression that is value-dependent [C++11].
288 // (VD) - FIXME: Missing from the standard:
289 // - an entity with reference type and is initialized with an
290 // expression that is value-dependent [C++11]
291 if (VarDecl *Var = dyn_cast<VarDecl>(D)) {
292 if ((Ctx.getLangOpts().CPlusPlus11 ?
293 Var->getType()->isLiteralType(Ctx) :
294 Var->getType()->isIntegralOrEnumerationType()) &&
295 (Var->getType().isConstQualified() ||
296 Var->getType()->isReferenceType())) {
297 if (const Expr *Init = Var->getAnyInitializer())
298 if (Init->isValueDependent()) {
299 ValueDependent = true;
300 InstantiationDependent = true;
301 }
302 }
303
304 // (VD) - FIXME: Missing from the standard:
305 // - a member function or a static data member of the current
306 // instantiation
307 if (Var->isStaticDataMember() &&
308 Var->getDeclContext()->isDependentContext()) {
309 ValueDependent = true;
310 InstantiationDependent = true;
311 TypeSourceInfo *TInfo = Var->getFirstDecl()->getTypeSourceInfo();
312 if (TInfo->getType()->isIncompleteArrayType())
313 TypeDependent = true;
314 }
315
316 return;
317 }
318
319 // (VD) - FIXME: Missing from the standard:
320 // - a member function or a static data member of the current
321 // instantiation
322 if (isa<CXXMethodDecl>(D) && D->getDeclContext()->isDependentContext()) {
323 ValueDependent = true;
324 InstantiationDependent = true;
325 }
326 }
327
328 void DeclRefExpr::computeDependence(const ASTContext &Ctx) {
329 bool TypeDependent = false;
330 bool ValueDependent = false;
331 bool InstantiationDependent = false;
332 computeDeclRefDependence(Ctx, getDecl(), getType(), TypeDependent,
333 ValueDependent, InstantiationDependent);
334
335 ExprBits.TypeDependent |= TypeDependent;
336 ExprBits.ValueDependent |= ValueDependent;
337 ExprBits.InstantiationDependent |= InstantiationDependent;
338
339 // Is the declaration a parameter pack?
340 if (getDecl()->isParameterPack())
341 ExprBits.ContainsUnexpandedParameterPack = true;
342 }
343
344 DeclRefExpr::DeclRefExpr(const ASTContext &Ctx, ValueDecl *D,
345 bool RefersToEnclosingVariableOrCapture, QualType T,
346 ExprValueKind VK, SourceLocation L,
347 const DeclarationNameLoc &LocInfo)
348 : Expr(DeclRefExprClass, T, VK, OK_Ordinary, false, false, false, false),
349 D(D), DNLoc(LocInfo) {
350 DeclRefExprBits.HasQualifier = false;
351 DeclRefExprBits.HasTemplateKWAndArgsInfo = false;
352 DeclRefExprBits.HasFoundDecl = false;
353 DeclRefExprBits.HadMultipleCandidates = false;
354 DeclRefExprBits.RefersToEnclosingVariableOrCapture =
355 RefersToEnclosingVariableOrCapture;
356 DeclRefExprBits.Loc = L;
357 computeDependence(Ctx);
358 }
359
360 DeclRefExpr::DeclRefExpr(const ASTContext &Ctx,
361 NestedNameSpecifierLoc QualifierLoc,
362 SourceLocation TemplateKWLoc, ValueDecl *D,
363 bool RefersToEnclosingVariableOrCapture,
364 const DeclarationNameInfo &NameInfo, NamedDecl *FoundD,
365 const TemplateArgumentListInfo *TemplateArgs,
366 QualType T, ExprValueKind VK)
367 : Expr(DeclRefExprClass, T, VK, OK_Ordinary, false, false, false, false),
368 D(D), DNLoc(NameInfo.getInfo()) {
369 DeclRefExprBits.Loc = NameInfo.getLoc();
370 DeclRefExprBits.HasQualifier = QualifierLoc ? 1 : 0;
371 if (QualifierLoc) {
372 new (getTrailingObjects<NestedNameSpecifierLoc>())
373 NestedNameSpecifierLoc(QualifierLoc);
374 auto *NNS = QualifierLoc.getNestedNameSpecifier();
375 if (NNS->isInstantiationDependent())
376 ExprBits.InstantiationDependent = true;
377 if (NNS->containsUnexpandedParameterPack())
378 ExprBits.ContainsUnexpandedParameterPack = true;
379 }
380 DeclRefExprBits.HasFoundDecl = FoundD ? 1 : 0;
381 if (FoundD)
382 *getTrailingObjects<NamedDecl *>() = FoundD;
383 DeclRefExprBits.HasTemplateKWAndArgsInfo
384 = (TemplateArgs || TemplateKWLoc.isValid()) ? 1 : 0;
385 DeclRefExprBits.RefersToEnclosingVariableOrCapture =
386 RefersToEnclosingVariableOrCapture;
387 if (TemplateArgs) {
388 bool Dependent = false;
389 bool InstantiationDependent = false;
390 bool ContainsUnexpandedParameterPack = false;
391 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
392 TemplateKWLoc, *TemplateArgs, getTrailingObjects<TemplateArgumentLoc>(),
393 Dependent, InstantiationDependent, ContainsUnexpandedParameterPack);
394 assert(!Dependent && "built a DeclRefExpr with dependent template args");
395 ExprBits.InstantiationDependent |= InstantiationDependent;
396 ExprBits.ContainsUnexpandedParameterPack |= ContainsUnexpandedParameterPack;
397 } else if (TemplateKWLoc.isValid()) {
398 getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
399 TemplateKWLoc);
400 }
401 DeclRefExprBits.HadMultipleCandidates = 0;
402
403 computeDependence(Ctx);
404 }
405
406 DeclRefExpr *DeclRefExpr::Create(const ASTContext &Context,
407 NestedNameSpecifierLoc QualifierLoc,
408 SourceLocation TemplateKWLoc,
409 ValueDecl *D,
410 bool RefersToEnclosingVariableOrCapture,
411 SourceLocation NameLoc,
412 QualType T,
413 ExprValueKind VK,
414 NamedDecl *FoundD,
415 const TemplateArgumentListInfo *TemplateArgs) {
416 return Create(Context, QualifierLoc, TemplateKWLoc, D,
417 RefersToEnclosingVariableOrCapture,
418 DeclarationNameInfo(D->getDeclName(), NameLoc),
419 T, VK, FoundD, TemplateArgs);
420 }
421
422 DeclRefExpr *DeclRefExpr::Create(const ASTContext &Context,
423 NestedNameSpecifierLoc QualifierLoc,
424 SourceLocation TemplateKWLoc,
425 ValueDecl *D,
426 bool RefersToEnclosingVariableOrCapture,
427 const DeclarationNameInfo &NameInfo,
428 QualType T,
429 ExprValueKind VK,
430 NamedDecl *FoundD,
431 const TemplateArgumentListInfo *TemplateArgs) {
432 // Filter out cases where the found Decl is the same as the value refenenced.
433 if (D == FoundD)
434 FoundD = nullptr;
435
436 bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid();
437 std::size_t Size =
438 totalSizeToAlloc<NestedNameSpecifierLoc, NamedDecl *,
439 ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
440 QualifierLoc ? 1 : 0, FoundD ? 1 : 0,
441 HasTemplateKWAndArgsInfo ? 1 : 0,
442 TemplateArgs ? TemplateArgs->size() : 0);
443
444 void *Mem = Context.Allocate(Size, alignof(DeclRefExpr));
445 return new (Mem) DeclRefExpr(Context, QualifierLoc, TemplateKWLoc, D,
446 RefersToEnclosingVariableOrCapture,
447 NameInfo, FoundD, TemplateArgs, T, VK);
448 }
449
450 DeclRefExpr *DeclRefExpr::CreateEmpty(const ASTContext &Context,
451 bool HasQualifier,
452 bool HasFoundDecl,
453 bool HasTemplateKWAndArgsInfo,
454 unsigned NumTemplateArgs) {
455 assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo);
456 std::size_t Size =
457 totalSizeToAlloc<NestedNameSpecifierLoc, NamedDecl *,
458 ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
459 HasQualifier ? 1 : 0, HasFoundDecl ? 1 : 0, HasTemplateKWAndArgsInfo,
460 NumTemplateArgs);
461 void *Mem = Context.Allocate(Size, alignof(DeclRefExpr));
462 return new (Mem) DeclRefExpr(EmptyShell());
463 }
464
465 SourceLocation DeclRefExpr::getBeginLoc() const {
466 if (hasQualifier())
467 return getQualifierLoc().getBeginLoc();
468 return getNameInfo().getBeginLoc();
469 }
470 SourceLocation DeclRefExpr::getEndLoc() const {
471 if (hasExplicitTemplateArgs())
472 return getRAngleLoc();
473 return getNameInfo().getEndLoc();
474 }
475
476 PredefinedExpr::PredefinedExpr(SourceLocation L, QualType FNTy, IdentKind IK,
477 StringLiteral *SL)
478 : Expr(PredefinedExprClass, FNTy, VK_LValue, OK_Ordinary,
479 FNTy->isDependentType(), FNTy->isDependentType(),
480 FNTy->isInstantiationDependentType(),
481 /*ContainsUnexpandedParameterPack=*/false) {
482 PredefinedExprBits.Kind = IK;
483 assert((getIdentKind() == IK) &&
484 "IdentKind do not fit in PredefinedExprBitfields!");
485 bool HasFunctionName = SL != nullptr;
486 PredefinedExprBits.HasFunctionName = HasFunctionName;
487 PredefinedExprBits.Loc = L;
488 if (HasFunctionName)
489 setFunctionName(SL);
490 }
491
492 PredefinedExpr::PredefinedExpr(EmptyShell Empty, bool HasFunctionName)
493 : Expr(PredefinedExprClass, Empty) {
494 PredefinedExprBits.HasFunctionName = HasFunctionName;
495 }
496
497 PredefinedExpr *PredefinedExpr::Create(const ASTContext &Ctx, SourceLocation L,
498 QualType FNTy, IdentKind IK,
499 StringLiteral *SL) {
500 bool HasFunctionName = SL != nullptr;
501 void *Mem = Ctx.Allocate(totalSizeToAlloc<Stmt *>(HasFunctionName),
502 alignof(PredefinedExpr));
503 return new (Mem) PredefinedExpr(L, FNTy, IK, SL);
504 }
505
506 PredefinedExpr *PredefinedExpr::CreateEmpty(const ASTContext &Ctx,
507 bool HasFunctionName) {
508 void *Mem = Ctx.Allocate(totalSizeToAlloc<Stmt *>(HasFunctionName),
509 alignof(PredefinedExpr));
510 return new (Mem) PredefinedExpr(EmptyShell(), HasFunctionName);
511 }
512
513 StringRef PredefinedExpr::getIdentKindName(PredefinedExpr::IdentKind IK) {
514 switch (IK) {
515 case Func:
516 return "__func__";
517 case Function:
518 return "__FUNCTION__";
519 case FuncDName:
520 return "__FUNCDNAME__";
521 case LFunction:
522 return "L__FUNCTION__";
523 case PrettyFunction:
524 return "__PRETTY_FUNCTION__";
525 case FuncSig:
526 return "__FUNCSIG__";
527 case LFuncSig:
528 return "L__FUNCSIG__";
529 case PrettyFunctionNoVirtual:
530 break;
531 }
532 llvm_unreachable("Unknown ident kind for PredefinedExpr");
533 }
534
535 // FIXME: Maybe this should use DeclPrinter with a special "print predefined
536 // expr" policy instead.
537 std::string PredefinedExpr::ComputeName(IdentKind IK, const Decl *CurrentDecl) {
538 ASTContext &Context = CurrentDecl->getASTContext();
539
540 if (IK == PredefinedExpr::FuncDName) {
541 if (const NamedDecl *ND = dyn_cast<NamedDecl>(CurrentDecl)) {
542 std::unique_ptr<MangleContext> MC;
543 MC.reset(Context.createMangleContext());
544
545 if (MC->shouldMangleDeclName(ND)) {
546 SmallString<256> Buffer;
547 llvm::raw_svector_ostream Out(Buffer);
548 if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(ND))
549 MC->mangleCXXCtor(CD, Ctor_Base, Out);
550 else if (const CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(ND))
551 MC->mangleCXXDtor(DD, Dtor_Base, Out);
552 else
553 MC->mangleName(ND, Out);
554
555 if (!Buffer.empty() && Buffer.front() == '\01')
556 return Buffer.substr(1);
557 return Buffer.str();
558 } else
559 return ND->getIdentifier()->getName();
560 }
561 return "";
562 }
563 if (isa<BlockDecl>(CurrentDecl)) {
564 // For blocks we only emit something if it is enclosed in a function
565 // For top-level block we'd like to include the name of variable, but we
566 // don't have it at this point.
567 auto DC = CurrentDecl->getDeclContext();
568 if (DC->isFileContext())
569 return "";
570
571 SmallString<256> Buffer;
572 llvm::raw_svector_ostream Out(Buffer);
573 if (auto *DCBlock = dyn_cast<BlockDecl>(DC))
574 // For nested blocks, propagate up to the parent.
575 Out << ComputeName(IK, DCBlock);
576 else if (auto *DCDecl = dyn_cast<Decl>(DC))
577 Out << ComputeName(IK, DCDecl) << "_block_invoke";
578 return Out.str();
579 }
580 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(CurrentDecl)) {
581 if (IK != PrettyFunction && IK != PrettyFunctionNoVirtual &&
582 IK != FuncSig && IK != LFuncSig)
583 return FD->getNameAsString();
584
585 SmallString<256> Name;
586 llvm::raw_svector_ostream Out(Name);
587
588 if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) {
589 if (MD->isVirtual() && IK != PrettyFunctionNoVirtual)
590 Out << "virtual ";
591 if (MD->isStatic())
592 Out << "static ";
593 }
594
595 PrintingPolicy Policy(Context.getLangOpts());
596 std::string Proto;
597 llvm::raw_string_ostream POut(Proto);
598
599 const FunctionDecl *Decl = FD;
600 if (const FunctionDecl* Pattern = FD->getTemplateInstantiationPattern())
601 Decl = Pattern;
602 const FunctionType *AFT = Decl->getType()->getAs<FunctionType>();
603 const FunctionProtoType *FT = nullptr;
604 if (FD->hasWrittenPrototype())
605 FT = dyn_cast<FunctionProtoType>(AFT);
606
607 if (IK == FuncSig || IK == LFuncSig) {
608 switch (AFT->getCallConv()) {
609 case CC_C: POut << "__cdecl "; break;
610 case CC_X86StdCall: POut << "__stdcall "; break;
611 case CC_X86FastCall: POut << "__fastcall "; break;
612 case CC_X86ThisCall: POut << "__thiscall "; break;
613 case CC_X86VectorCall: POut << "__vectorcall "; break;
614 case CC_X86RegCall: POut << "__regcall "; break;
615 // Only bother printing the conventions that MSVC knows about.
616 default: break;
617 }
618 }
619
620 FD->printQualifiedName(POut, Policy);
621
622 POut << "(";
623 if (FT) {
624 for (unsigned i = 0, e = Decl->getNumParams(); i != e; ++i) {
625 if (i) POut << ", ";
626 POut << Decl->getParamDecl(i)->getType().stream(Policy);
627 }
628
629 if (FT->isVariadic()) {
630 if (FD->getNumParams()) POut << ", ";
631 POut << "...";
632 } else if ((IK == FuncSig || IK == LFuncSig ||
633 !Context.getLangOpts().CPlusPlus) &&
634 !Decl->getNumParams()) {
635 POut << "void";
636 }
637 }
638 POut << ")";
639
640 if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) {
641 assert(FT && "We must have a written prototype in this case.");
642 if (FT->isConst())
643 POut << " const";
644 if (FT->isVolatile())
645 POut << " volatile";
646 RefQualifierKind Ref = MD->getRefQualifier();
647 if (Ref == RQ_LValue)
648 POut << " &";
649 else if (Ref == RQ_RValue)
650 POut << " &&";
651 }
652
653 typedef SmallVector<const ClassTemplateSpecializationDecl *, 8> SpecsTy;
654 SpecsTy Specs;
655 const DeclContext *Ctx = FD->getDeclContext();
656 while (Ctx && isa<NamedDecl>(Ctx)) {
657 const ClassTemplateSpecializationDecl *Spec
658 = dyn_cast<ClassTemplateSpecializationDecl>(Ctx);
659 if (Spec && !Spec->isExplicitSpecialization())
660 Specs.push_back(Spec);
661 Ctx = Ctx->getParent();
662 }
663
664 std::string TemplateParams;
665 llvm::raw_string_ostream TOut(TemplateParams);
666 for (SpecsTy::reverse_iterator I = Specs.rbegin(), E = Specs.rend();
667 I != E; ++I) {
668 const TemplateParameterList *Params
669 = (*I)->getSpecializedTemplate()->getTemplateParameters();
670 const TemplateArgumentList &Args = (*I)->getTemplateArgs();
671 assert(Params->size() == Args.size());
672 for (unsigned i = 0, numParams = Params->size(); i != numParams; ++i) {
673 StringRef Param = Params->getParam(i)->getName();
674 if (Param.empty()) continue;
675 TOut << Param << " = ";
676 Args.get(i).print(Policy, TOut);
677 TOut << ", ";
678 }
679 }
680
681 FunctionTemplateSpecializationInfo *FSI
682 = FD->getTemplateSpecializationInfo();
683 if (FSI && !FSI->isExplicitSpecialization()) {
684 const TemplateParameterList* Params
685 = FSI->getTemplate()->getTemplateParameters();
686 const TemplateArgumentList* Args = FSI->TemplateArguments;
687 assert(Params->size() == Args->size());
688 for (unsigned i = 0, e = Params->size(); i != e; ++i) {
689 StringRef Param = Params->getParam(i)->getName();
690 if (Param.empty()) continue;
691 TOut << Param << " = ";
692 Args->get(i).print(Policy, TOut);
693 TOut << ", ";
694 }
695 }
696
697 TOut.flush();
698 if (!TemplateParams.empty()) {
699 // remove the trailing comma and space
700 TemplateParams.resize(TemplateParams.size() - 2);
701 POut << " [" << TemplateParams << "]";
702 }
703
704 POut.flush();
705
706 // Print "auto" for all deduced return types. This includes C++1y return
707 // type deduction and lambdas. For trailing return types resolve the
708 // decltype expression. Otherwise print the real type when this is
709 // not a constructor or destructor.
710 if (isa<CXXMethodDecl>(FD) &&
711 cast<CXXMethodDecl>(FD)->getParent()->isLambda())
712 Proto = "auto " + Proto;
713 else if (FT && FT->getReturnType()->getAs<DecltypeType>())
714 FT->getReturnType()
715 ->getAs<DecltypeType>()
716 ->getUnderlyingType()
717 .getAsStringInternal(Proto, Policy);
718 else if (!isa<CXXConstructorDecl>(FD) && !isa<CXXDestructorDecl>(FD))
719 AFT->getReturnType().getAsStringInternal(Proto, Policy);
720
721 Out << Proto;
722
723 return Name.str().str();
724 }
725 if (const CapturedDecl *CD = dyn_cast<CapturedDecl>(CurrentDecl)) {
726 for (const DeclContext *DC = CD->getParent(); DC; DC = DC->getParent())
727 // Skip to its enclosing function or method, but not its enclosing
728 // CapturedDecl.
729 if (DC->isFunctionOrMethod() && (DC->getDeclKind() != Decl::Captured)) {
730 const Decl *D = Decl::castFromDeclContext(DC);
731 return ComputeName(IK, D);
732 }
733 llvm_unreachable("CapturedDecl not inside a function or method");
734 }
735 if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(CurrentDecl)) {
736 SmallString<256> Name;
737 llvm::raw_svector_ostream Out(Name);
738 Out << (MD->isInstanceMethod() ? '-' : '+');
739 Out << '[';
740
741 // For incorrect code, there might not be an ObjCInterfaceDecl. Do
742 // a null check to avoid a crash.
743 if (const ObjCInterfaceDecl *ID = MD->getClassInterface())
744 Out << *ID;
745
746 if (const ObjCCategoryImplDecl *CID =
747 dyn_cast<ObjCCategoryImplDecl>(MD->getDeclContext()))
748 Out << '(' << *CID << ')';
749
750 Out << ' ';
751 MD->getSelector().print(Out);
752 Out << ']';
753
754 return Name.str().str();
755 }
756 if (isa<TranslationUnitDecl>(CurrentDecl) && IK == PrettyFunction) {
757 // __PRETTY_FUNCTION__ -> "top level", the others produce an empty string.
758 return "top level";
759 }
760 return "";
761 }
762
763 void APNumericStorage::setIntValue(const ASTContext &C,
764 const llvm::APInt &Val) {
765 if (hasAllocation())
766 C.Deallocate(pVal);
767
768 BitWidth = Val.getBitWidth();
769 unsigned NumWords = Val.getNumWords();
770 const uint64_t* Words = Val.getRawData();
771 if (NumWords > 1) {
772 pVal = new (C) uint64_t[NumWords];
773 std::copy(Words, Words + NumWords, pVal);
774 } else if (NumWords == 1)
775 VAL = Words[0];
776 else
777 VAL = 0;
778 }
779
780 IntegerLiteral::IntegerLiteral(const ASTContext &C, const llvm::APInt &V,
781 QualType type, SourceLocation l)
782 : Expr(IntegerLiteralClass, type, VK_RValue, OK_Ordinary, false, false,
783 false, false),
784 Loc(l) {
785 assert(type->isIntegerType() && "Illegal type in IntegerLiteral");
786 assert(V.getBitWidth() == C.getIntWidth(type) &&
787 "Integer type is not the correct size for constant.");
788 setValue(C, V);
789 }
790
791 IntegerLiteral *
792 IntegerLiteral::Create(const ASTContext &C, const llvm::APInt &V,
793 QualType type, SourceLocation l) {
794 return new (C) IntegerLiteral(C, V, type, l);
795 }
796
797 IntegerLiteral *
798 IntegerLiteral::Create(const ASTContext &C, EmptyShell Empty) {
799 return new (C) IntegerLiteral(Empty);
800 }
801
802 FixedPointLiteral::FixedPointLiteral(const ASTContext &C, const llvm::APInt &V,
803 QualType type, SourceLocation l,
804 unsigned Scale)
805 : Expr(FixedPointLiteralClass, type, VK_RValue, OK_Ordinary, false, false,
806 false, false),
807 Loc(l), Scale(Scale) {
808 assert(type->isFixedPointType() && "Illegal type in FixedPointLiteral");
809 assert(V.getBitWidth() == C.getTypeInfo(type).Width &&
810 "Fixed point type is not the correct size for constant.");
811 setValue(C, V);
812 }
813
814 FixedPointLiteral *FixedPointLiteral::CreateFromRawInt(const ASTContext &C,
815 const llvm::APInt &V,
816 QualType type,
817 SourceLocation l,
818 unsigned Scale) {
819 return new (C) FixedPointLiteral(C, V, type, l, Scale);
820 }
821
822 std::string FixedPointLiteral::getValueAsString(unsigned Radix) const {
823 // Currently the longest decimal number that can be printed is the max for an
824 // unsigned long _Accum: 4294967295.99999999976716935634613037109375
825 // which is 43 characters.
826 SmallString<64> S;
827 FixedPointValueToString(
828 S, llvm::APSInt::getUnsigned(getValue().getZExtValue()), Scale);
829 return S.str();
830 }
831
832 FloatingLiteral::FloatingLiteral(const ASTContext &C, const llvm::APFloat &V,
833 bool isexact, QualType Type, SourceLocation L)
834 : Expr(FloatingLiteralClass, Type, VK_RValue, OK_Ordinary, false, false,
835 false, false), Loc(L) {
836 setSemantics(V.getSemantics());
837 FloatingLiteralBits.IsExact = isexact;
838 setValue(C, V);
839 }
840
841 FloatingLiteral::FloatingLiteral(const ASTContext &C, EmptyShell Empty)
842 : Expr(FloatingLiteralClass, Empty) {
843 setRawSemantics(IEEEhalf);
844 FloatingLiteralBits.IsExact = false;
845 }
846
847 FloatingLiteral *
848 FloatingLiteral::Create(const ASTContext &C, const llvm::APFloat &V,
849 bool isexact, QualType Type, SourceLocation L) {
850 return new (C) FloatingLiteral(C, V, isexact, Type, L);
851 }
852
853 FloatingLiteral *
854 FloatingLiteral::Create(const ASTContext &C, EmptyShell Empty) {
855 return new (C) FloatingLiteral(C, Empty);
856 }
857
858 const llvm::fltSemantics &FloatingLiteral::getSemantics() const {
859 switch(FloatingLiteralBits.Semantics) {
860 case IEEEhalf:
861 return llvm::APFloat::IEEEhalf();
862 case IEEEsingle:
863 return llvm::APFloat::IEEEsingle();
864 case IEEEdouble:
865 return llvm::APFloat::IEEEdouble();
866 case x87DoubleExtended:
867 return llvm::APFloat::x87DoubleExtended();
868 case IEEEquad:
869 return llvm::APFloat::IEEEquad();
870 case PPCDoubleDouble:
871 return llvm::APFloat::PPCDoubleDouble();
872 }
873 llvm_unreachable("Unrecognised floating semantics");
874 }
875
876 void FloatingLiteral::setSemantics(const llvm::fltSemantics &Sem) {
877 if (&Sem == &llvm::APFloat::IEEEhalf())
878 FloatingLiteralBits.Semantics = IEEEhalf;
879 else if (&Sem == &llvm::APFloat::IEEEsingle())
880 FloatingLiteralBits.Semantics = IEEEsingle;
881 else if (&Sem == &llvm::APFloat::IEEEdouble())
882 FloatingLiteralBits.Semantics = IEEEdouble;
883 else if (&Sem == &llvm::APFloat::x87DoubleExtended())
884 FloatingLiteralBits.Semantics = x87DoubleExtended;
885 else if (&Sem == &llvm::APFloat::IEEEquad())
886 FloatingLiteralBits.Semantics = IEEEquad;
887 else if (&Sem == &llvm::APFloat::PPCDoubleDouble())
888 FloatingLiteralBits.Semantics = PPCDoubleDouble;
889 else
890 llvm_unreachable("Unknown floating semantics");
891 }
892
893 /// getValueAsApproximateDouble - This returns the value as an inaccurate
894 /// double. Note that this may cause loss of precision, but is useful for
895 /// debugging dumps, etc.
896 double FloatingLiteral::getValueAsApproximateDouble() const {
897 llvm::APFloat V = getValue();
898 bool ignored;
899 V.convert(llvm::APFloat::IEEEdouble(), llvm::APFloat::rmNearestTiesToEven,
900 &ignored);
901 return V.convertToDouble();
902 }
903
904 unsigned StringLiteral::mapCharByteWidth(TargetInfo const &Target,
905 StringKind SK) {
906 unsigned CharByteWidth = 0;
907 switch (SK) {
908 case Ascii:
909 case UTF8:
910 CharByteWidth = Target.getCharWidth();
911 break;
912 case Wide:
913 CharByteWidth = Target.getWCharWidth();
914 break;
915 case UTF16:
916 CharByteWidth = Target.getChar16Width();
917 break;
918 case UTF32:
919 CharByteWidth = Target.getChar32Width();
920 break;
921 }
922 assert((CharByteWidth & 7) == 0 && "Assumes character size is byte multiple");
923 CharByteWidth /= 8;
924 assert((CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth == 4) &&
925 "The only supported character byte widths are 1,2 and 4!");
926 return CharByteWidth;
927 }
928
929 StringLiteral::StringLiteral(const ASTContext &Ctx, StringRef Str,
930 StringKind Kind, bool Pascal, QualType Ty,
931 const SourceLocation *Loc,
932 unsigned NumConcatenated)
933 : Expr(StringLiteralClass, Ty, VK_LValue, OK_Ordinary, false, false, false,
934 false) {
935 assert(Ctx.getAsConstantArrayType(Ty) &&
936 "StringLiteral must be of constant array type!");
937 unsigned CharByteWidth = mapCharByteWidth(Ctx.getTargetInfo(), Kind);
938 unsigned ByteLength = Str.size();
939 assert((ByteLength % CharByteWidth == 0) &&
940 "The size of the data must be a multiple of CharByteWidth!");
941
942 // Avoid the expensive division. The compiler should be able to figure it
943 // out by itself. However as of clang 7, even with the appropriate
944 // llvm_unreachable added just here, it is not able to do so.
945 unsigned Length;
946 switch (CharByteWidth) {
947 case 1:
948 Length = ByteLength;
949 break;
950 case 2:
951 Length = ByteLength / 2;
952 break;
953 case 4:
954 Length = ByteLength / 4;
955 break;
956 default:
957 llvm_unreachable("Unsupported character width!");
958 }
959
960 StringLiteralBits.Kind = Kind;
961 StringLiteralBits.CharByteWidth = CharByteWidth;
962 StringLiteralBits.IsPascal = Pascal;
963 StringLiteralBits.NumConcatenated = NumConcatenated;
964 *getTrailingObjects<unsigned>() = Length;
965
966 // Initialize the trailing array of SourceLocation.
967 // This is safe since SourceLocation is POD-like.
968 std::memcpy(getTrailingObjects<SourceLocation>(), Loc,
969 NumConcatenated * sizeof(SourceLocation));
970
971 // Initialize the trailing array of char holding the string data.
972 std::memcpy(getTrailingObjects<char>(), Str.data(), ByteLength);
973 }
974
975 StringLiteral::StringLiteral(EmptyShell Empty, unsigned NumConcatenated,
976 unsigned Length, unsigned CharByteWidth)
977 : Expr(StringLiteralClass, Empty) {
978 StringLiteralBits.CharByteWidth = CharByteWidth;
979 StringLiteralBits.NumConcatenated = NumConcatenated;
980 *getTrailingObjects<unsigned>() = Length;
981 }
982
983 StringLiteral *StringLiteral::Create(const ASTContext &Ctx, StringRef Str,
984 StringKind Kind, bool Pascal, QualType Ty,
985 const SourceLocation *Loc,
986 unsigned NumConcatenated) {
987 void *Mem = Ctx.Allocate(totalSizeToAlloc<unsigned, SourceLocation, char>(
988 1, NumConcatenated, Str.size()),
989 alignof(StringLiteral));
990 return new (Mem)
991 StringLiteral(Ctx, Str, Kind, Pascal, Ty, Loc, NumConcatenated);
992 }
993
994 StringLiteral *StringLiteral::CreateEmpty(const ASTContext &Ctx,
995 unsigned NumConcatenated,
996 unsigned Length,
997 unsigned CharByteWidth) {
998 void *Mem = Ctx.Allocate(totalSizeToAlloc<unsigned, SourceLocation, char>(
999 1, NumConcatenated, Length * CharByteWidth),
1000 alignof(StringLiteral));
1001 return new (Mem)
1002 StringLiteral(EmptyShell(), NumConcatenated, Length, CharByteWidth);
1003 }
1004
1005 void StringLiteral::outputString(raw_ostream &OS) const {
1006 switch (getKind()) {
1007 case Ascii: break; // no prefix.
1008 case Wide: OS << 'L'; break;
1009 case UTF8: OS << "u8"; break;
1010 case UTF16: OS << 'u'; break;
1011 case UTF32: OS << 'U'; break;
1012 }
1013 OS << '"';
1014 static const char Hex[] = "0123456789ABCDEF";
1015
1016 unsigned LastSlashX = getLength();
1017 for (unsigned I = 0, N = getLength(); I != N; ++I) {
1018 switch (uint32_t Char = getCodeUnit(I)) {
1019 default:
1020 // FIXME: Convert UTF-8 back to codepoints before rendering.
1021
1022 // Convert UTF-16 surrogate pairs back to codepoints before rendering.
1023 // Leave invalid surrogates alone; we'll use \x for those.
1024 if (getKind() == UTF16 && I != N - 1 && Char >= 0xd800 &&
1025 Char <= 0xdbff) {
1026 uint32_t Trail = getCodeUnit(I + 1);
1027 if (Trail >= 0xdc00 && Trail <= 0xdfff) {
1028 Char = 0x10000 + ((Char - 0xd800) << 10) + (Trail - 0xdc00);
1029 ++I;
1030 }
1031 }
1032
1033 if (Char > 0xff) {
1034 // If this is a wide string, output characters over 0xff using \x
1035 // escapes. Otherwise, this is a UTF-16 or UTF-32 string, and Char is a
1036 // codepoint: use \x escapes for invalid codepoints.
1037 if (getKind() == Wide ||
1038 (Char >= 0xd800 && Char <= 0xdfff) || Char >= 0x110000) {
1039 // FIXME: Is this the best way to print wchar_t?
1040 OS << "\\x";
1041 int Shift = 28;
1042 while ((Char >> Shift) == 0)
1043 Shift -= 4;
1044 for (/**/; Shift >= 0; Shift -= 4)
1045 OS << Hex[(Char >> Shift) & 15];
1046 LastSlashX = I;
1047 break;
1048 }
1049
1050 if (Char > 0xffff)
1051 OS << "\\U00"
1052 << Hex[(Char >> 20) & 15]
1053 << Hex[(Char >> 16) & 15];
1054 else
1055 OS << "\\u";
1056 OS << Hex[(Char >> 12) & 15]
1057 << Hex[(Char >> 8) & 15]
1058 << Hex[(Char >> 4) & 15]
1059 << Hex[(Char >> 0) & 15];
1060 break;
1061 }
1062
1063 // If we used \x... for the previous character, and this character is a
1064 // hexadecimal digit, prevent it being slurped as part of the \x.
1065 if (LastSlashX + 1 == I) {
1066 switch (Char) {
1067 case '0': case '1': case '2': case '3': case '4':
1068 case '5': case '6': case '7': case '8': case '9':
1069 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
1070 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
1071 OS << "\"\"";
1072 }
1073 }
1074
1075 assert(Char <= 0xff &&
1076 "Characters above 0xff should already have been handled.");
1077
1078 if (isPrintable(Char))
1079 OS << (char)Char;
1080 else // Output anything hard as an octal escape.
1081 OS << '\\'
1082 << (char)('0' + ((Char >> 6) & 7))
1083 << (char)('0' + ((Char >> 3) & 7))
1084 << (char)('0' + ((Char >> 0) & 7));
1085 break;
1086 // Handle some common non-printable cases to make dumps prettier.
1087 case '\\': OS << "\\\\"; break;
1088 case '"': OS << "\\\""; break;
1089 case '\a': OS << "\\a"; break;
1090 case '\b': OS << "\\b"; break;
1091 case '\f': OS << "\\f"; break;
1092 case '\n': OS << "\\n"; break;
1093 case '\r': OS << "\\r"; break;
1094 case '\t': OS << "\\t"; break;
1095 case '\v': OS << "\\v"; break;
1096 }
1097 }
1098 OS << '"';
1099 }
1100
1101 /// getLocationOfByte - Return a source location that points to the specified
1102 /// byte of this string literal.
1103 ///
1104 /// Strings are amazingly complex. They can be formed from multiple tokens and
1105 /// can have escape sequences in them in addition to the usual trigraph and
1106 /// escaped newline business. This routine handles this complexity.
1107 ///
1108 /// The *StartToken sets the first token to be searched in this function and
1109 /// the *StartTokenByteOffset is the byte offset of the first token. Before
1110 /// returning, it updates the *StartToken to the TokNo of the token being found
1111 /// and sets *StartTokenByteOffset to the byte offset of the token in the
1112 /// string.
1113 /// Using these two parameters can reduce the time complexity from O(n^2) to
1114 /// O(n) if one wants to get the location of byte for all the tokens in a
1115 /// string.
1116 ///
1117 SourceLocation
1118 StringLiteral::getLocationOfByte(unsigned ByteNo, const SourceManager &SM,
1119 const LangOptions &Features,
1120 const TargetInfo &Target, unsigned *StartToken,
1121 unsigned *StartTokenByteOffset) const {
1122 assert((getKind() == StringLiteral::Ascii ||
1123 getKind() == StringLiteral::UTF8) &&
1124 "Only narrow string literals are currently supported");
1125
1126 // Loop over all of the tokens in this string until we find the one that
1127 // contains the byte we're looking for.
1128 unsigned TokNo = 0;
1129 unsigned StringOffset = 0;
1130 if (StartToken)
1131 TokNo = *StartToken;
1132 if (StartTokenByteOffset) {
1133 StringOffset = *StartTokenByteOffset;
1134 ByteNo -= StringOffset;
1135 }
1136 while (1) {
1137 assert(TokNo < getNumConcatenated() && "Invalid byte number!");
1138 SourceLocation StrTokLoc = getStrTokenLoc(TokNo);
1139
1140 // Get the spelling of the string so that we can get the data that makes up
1141 // the string literal, not the identifier for the macro it is potentially
1142 // expanded through.
1143 SourceLocation StrTokSpellingLoc = SM.getSpellingLoc(StrTokLoc);
1144
1145 // Re-lex the token to get its length and original spelling.
1146 std::pair<FileID, unsigned> LocInfo =
1147 SM.getDecomposedLoc(StrTokSpellingLoc);
1148 bool Invalid = false;
1149 StringRef Buffer = SM.getBufferData(LocInfo.first, &Invalid);
1150 if (Invalid) {
1151 if (StartTokenByteOffset != nullptr)
1152 *StartTokenByteOffset = StringOffset;
1153 if (StartToken != nullptr)
1154 *StartToken = TokNo;
1155 return StrTokSpellingLoc;
1156 }
1157
1158 const char *StrData = Buffer.data()+LocInfo.second;
1159
1160 // Create a lexer starting at the beginning of this token.
1161 Lexer TheLexer(SM.getLocForStartOfFile(LocInfo.first), Features,
1162 Buffer.begin(), StrData, Buffer.end());
1163 Token TheTok;
1164 TheLexer.LexFromRawLexer(TheTok);
1165
1166 // Use the StringLiteralParser to compute the length of the string in bytes.
1167 StringLiteralParser SLP(TheTok, SM, Features, Target);
1168 unsigned TokNumBytes = SLP.GetStringLength();
1169
1170 // If the byte is in this token, return the location of the byte.
1171 if (ByteNo < TokNumBytes ||
1172 (ByteNo == TokNumBytes && TokNo == getNumConcatenated() - 1)) {
1173 unsigned Offset = SLP.getOffsetOfStringByte(TheTok, ByteNo);
1174
1175 // Now that we know the offset of the token in the spelling, use the
1176 // preprocessor to get the offset in the original source.
1177 if (StartTokenByteOffset != nullptr)
1178 *StartTokenByteOffset = StringOffset;
1179 if (StartToken != nullptr)
1180 *StartToken = TokNo;
1181 return Lexer::AdvanceToTokenCharacter(StrTokLoc, Offset, SM, Features);
1182 }
1183
1184 // Move to the next string token.
1185 StringOffset += TokNumBytes;
1186 ++TokNo;
1187 ByteNo -= TokNumBytes;
1188 }
1189 }
1190
1191 /// getOpcodeStr - Turn an Opcode enum value into the punctuation char it
1192 /// corresponds to, e.g. "sizeof" or "[pre]++".
1193 StringRef UnaryOperator::getOpcodeStr(Opcode Op) {
1194 switch (Op) {
1195 #define UNARY_OPERATION(Name, Spelling) case UO_##Name: return Spelling;
1196 #include "clang/AST/OperationKinds.def"
1197 }
1198 llvm_unreachable("Unknown unary operator");
1199 }
1200
1201 UnaryOperatorKind
1202 UnaryOperator::getOverloadedOpcode(OverloadedOperatorKind OO, bool Postfix) {
1203 switch (OO) {
1204 default: llvm_unreachable("No unary operator for overloaded function");
1205 case OO_PlusPlus: return Postfix ? UO_PostInc : UO_PreInc;
1206 case OO_MinusMinus: return Postfix ? UO_PostDec : UO_PreDec;
1207 case OO_Amp: return UO_AddrOf;
1208 case OO_Star: return UO_Deref;
1209 case OO_Plus: return UO_Plus;
1210 case OO_Minus: return UO_Minus;
1211 case OO_Tilde: return UO_Not;
1212 case OO_Exclaim: return UO_LNot;
1213 case OO_Coawait: return UO_Coawait;
1214 }
1215 }
1216
1217 OverloadedOperatorKind UnaryOperator::getOverloadedOperator(Opcode Opc) {
1218 switch (Opc) {
1219 case UO_PostInc: case UO_PreInc: return OO_PlusPlus;
1220 case UO_PostDec: case UO_PreDec: return OO_MinusMinus;
1221 case UO_AddrOf: return OO_Amp;
1222 case UO_Deref: return OO_Star;
1223 case UO_Plus: return OO_Plus;
1224 case UO_Minus: return OO_Minus;
1225 case UO_Not: return OO_Tilde;
1226 case UO_LNot: return OO_Exclaim;
1227 case UO_Coawait: return OO_Coawait;
1228 default: return OO_None;
1229 }
1230 }
1231
1232
1233 //===----------------------------------------------------------------------===//
1234 // Postfix Operators.
1235 //===----------------------------------------------------------------------===//
1236
1237 CallExpr::CallExpr(StmtClass SC, Expr *Fn, ArrayRef<Expr *> PreArgs,
1238 ArrayRef<Expr *> Args, QualType Ty, ExprValueKind VK,
1239 SourceLocation RParenLoc, unsigned MinNumArgs,
1240 ADLCallKind UsesADL)
1241 : Expr(SC, Ty, VK, OK_Ordinary, Fn->isTypeDependent(),
1242 Fn->isValueDependent(), Fn->isInstantiationDependent(),
1243 Fn->containsUnexpandedParameterPack()),
1244 RParenLoc(RParenLoc) {
1245 NumArgs = std::max<unsigned>(Args.size(), MinNumArgs);
1246 unsigned NumPreArgs = PreArgs.size();
1247 CallExprBits.NumPreArgs = NumPreArgs;
1248 assert((NumPreArgs == getNumPreArgs()) && "NumPreArgs overflow!");
1249
1250 unsigned OffsetToTrailingObjects = offsetToTrailingObjects(SC);
1251 CallExprBits.OffsetToTrailingObjects = OffsetToTrailingObjects;
1252 assert((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) &&
1253 "OffsetToTrailingObjects overflow!");
1254
1255 CallExprBits.UsesADL = static_cast<bool>(UsesADL);
1256
1257 setCallee(Fn);
1258 for (unsigned I = 0; I != NumPreArgs; ++I) {
1259 updateDependenciesFromArg(PreArgs[I]);
1260 setPreArg(I, PreArgs[I]);
1261 }
1262 for (unsigned I = 0; I != Args.size(); ++I) {
1263 updateDependenciesFromArg(Args[I]);
1264 setArg(I, Args[I]);
1265 }
1266 for (unsigned I = Args.size(); I != NumArgs; ++I) {
1267 setArg(I, nullptr);
1268 }
1269 }
1270
1271 CallExpr::CallExpr(StmtClass SC, unsigned NumPreArgs, unsigned NumArgs,
1272 EmptyShell Empty)
1273 : Expr(SC, Empty), NumArgs(NumArgs) {
1274 CallExprBits.NumPreArgs = NumPreArgs;
1275 assert((NumPreArgs == getNumPreArgs()) && "NumPreArgs overflow!");
1276
1277 unsigned OffsetToTrailingObjects = offsetToTrailingObjects(SC);
1278 CallExprBits.OffsetToTrailingObjects = OffsetToTrailingObjects;
1279 assert((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) &&
1280 "OffsetToTrailingObjects overflow!");
1281 }
1282
1283 CallExpr *CallExpr::Create(const ASTContext &Ctx, Expr *Fn,
1284 ArrayRef<Expr *> Args, QualType Ty, ExprValueKind VK,
1285 SourceLocation RParenLoc, unsigned MinNumArgs,
1286 ADLCallKind UsesADL) {
1287 unsigned NumArgs = std::max<unsigned>(Args.size(), MinNumArgs);
1288 unsigned SizeOfTrailingObjects =
1289 CallExpr::sizeOfTrailingObjects(/*NumPreArgs=*/0, NumArgs);
1290 void *Mem =
1291 Ctx.Allocate(sizeof(CallExpr) + SizeOfTrailingObjects, alignof(CallExpr));
1292 return new (Mem) CallExpr(CallExprClass, Fn, /*PreArgs=*/{}, Args, Ty, VK,
1293 RParenLoc, MinNumArgs, UsesADL);
1294 }
1295
1296 CallExpr *CallExpr::CreateTemporary(void *Mem, Expr *Fn, QualType Ty,
1297 ExprValueKind VK, SourceLocation RParenLoc,
1298 ADLCallKind UsesADL) {
1299 assert(!(reinterpret_cast<uintptr_t>(Mem) % alignof(CallExpr)) &&
1300 "Misaligned memory in CallExpr::CreateTemporary!");
1301 return new (Mem) CallExpr(CallExprClass, Fn, /*PreArgs=*/{}, /*Args=*/{}, Ty,
1302 VK, RParenLoc, /*MinNumArgs=*/0, UsesADL);
1303 }
1304
1305 CallExpr *CallExpr::CreateEmpty(const ASTContext &Ctx, unsigned NumArgs,
1306 EmptyShell Empty) {
1307 unsigned SizeOfTrailingObjects =
1308 CallExpr::sizeOfTrailingObjects(/*NumPreArgs=*/0, NumArgs);
1309 void *Mem =
1310 Ctx.Allocate(sizeof(CallExpr) + SizeOfTrailingObjects, alignof(CallExpr));
1311 return new (Mem) CallExpr(CallExprClass, /*NumPreArgs=*/0, NumArgs, Empty);
1312 }
1313
1314 unsigned CallExpr::offsetToTrailingObjects(StmtClass SC) {
1315 switch (SC) {
1316 case CallExprClass:
1317 return sizeof(CallExpr);
1318 case CXXOperatorCallExprClass:
1319 return sizeof(CXXOperatorCallExpr);
1320 case CXXMemberCallExprClass:
1321 return sizeof(CXXMemberCallExpr);
1322 case UserDefinedLiteralClass:
1323 return sizeof(UserDefinedLiteral);
1324 case CUDAKernelCallExprClass:
1325 return sizeof(CUDAKernelCallExpr);
1326 default:
1327 llvm_unreachable("unexpected class deriving from CallExpr!");
1328 }
1329 }
1330
1331 void CallExpr::updateDependenciesFromArg(Expr *Arg) {
1332 if (Arg->isTypeDependent())
1333 ExprBits.TypeDependent = true;
1334 if (Arg->isValueDependent())
1335 ExprBits.ValueDependent = true;
1336 if (Arg->isInstantiationDependent())
1337 ExprBits.InstantiationDependent = true;
1338 if (Arg->containsUnexpandedParameterPack())
1339 ExprBits.ContainsUnexpandedParameterPack = true;
1340 }
1341
1342 Decl *Expr::getReferencedDeclOfCallee() {
1343 Expr *CEE = IgnoreParenImpCasts();
1344
1345 while (SubstNonTypeTemplateParmExpr *NTTP
1346 = dyn_cast<SubstNonTypeTemplateParmExpr>(CEE)) {
1347 CEE = NTTP->getReplacement()->IgnoreParenCasts();
1348 }
1349
1350 // If we're calling a dereference, look at the pointer instead.
1351 if (BinaryOperator *BO = dyn_cast<BinaryOperator>(CEE)) {
1352 if (BO->isPtrMemOp())
1353 CEE = BO->getRHS()->IgnoreParenCasts();
1354 } else if (UnaryOperator *UO = dyn_cast<UnaryOperator>(CEE)) {
1355 if (UO->getOpcode() == UO_Deref)
1356 CEE = UO->getSubExpr()->IgnoreParenCasts();
1357 }
1358 if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(CEE))
1359 return DRE->getDecl();
1360 if (MemberExpr *ME = dyn_cast<MemberExpr>(CEE))
1361 return ME->getMemberDecl();
1362
1363 return nullptr;
1364 }
1365
1366 /// getBuiltinCallee - If this is a call to a builtin, return the builtin ID. If
1367 /// not, return 0.
1368 unsigned CallExpr::getBuiltinCallee() const {
1369 // All simple function calls (e.g. func()) are implicitly cast to pointer to
1370 // function. As a result, we try and obtain the DeclRefExpr from the
1371 // ImplicitCastExpr.
1372 const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(getCallee());
1373 if (!ICE) // FIXME: deal with more complex calls (e.g. (func)(), (*func)()).
1374 return 0;
1375
1376 const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(ICE->getSubExpr());
1377 if (!DRE)
1378 return 0;
1379
1380 const FunctionDecl *FDecl = dyn_cast<FunctionDecl>(DRE->getDecl());
1381 if (!FDecl)
1382 return 0;
1383
1384 if (!FDecl->getIdentifier())
1385 return 0;
1386
1387 return FDecl->getBuiltinID();
1388 }
1389
1390 bool CallExpr::isUnevaluatedBuiltinCall(const ASTContext &Ctx) const {
1391 if (unsigned BI = getBuiltinCallee())
1392 return Ctx.BuiltinInfo.isUnevaluated(BI);
1393 return false;
1394 }
1395
1396 QualType CallExpr::getCallReturnType(const ASTContext &Ctx) const {
1397 const Expr *Callee = getCallee();
1398 QualType CalleeType = Callee->getType();
1399 if (const auto *FnTypePtr = CalleeType->getAs<PointerType>()) {
1400 CalleeType = FnTypePtr->getPointeeType();
1401 } else if (const auto *BPT = CalleeType->getAs<BlockPointerType>()) {
1402 CalleeType = BPT->getPointeeType();
1403 } else if (CalleeType->isSpecificPlaceholderType(BuiltinType::BoundMember)) {
1404 if (isa<CXXPseudoDestructorExpr>(Callee->IgnoreParens()))
1405 return Ctx.VoidTy;
1406
1407 // This should never be overloaded and so should never return null.
1408 CalleeType = Expr::findBoundMemberType(Callee);
1409 }
1410
1411 const FunctionType *FnType = CalleeType->castAs<FunctionType>();
1412 return FnType->getReturnType();
1413 }
1414
1415 const Attr *CallExpr::getUnusedResultAttr(const ASTContext &Ctx) const {
1416 // If the return type is a struct, union, or enum that is marked nodiscard,
1417 // then return the return type attribute.
1418 if (const TagDecl *TD = getCallReturnType(Ctx)->getAsTagDecl())
1419 if (const auto *A = TD->getAttr<WarnUnusedResultAttr>())
1420 return A;
1421
1422 // Otherwise, see if the callee is marked nodiscard and return that attribute
1423 // instead.
1424 const Decl *D = getCalleeDecl();
1425 return D ? D->getAttr<WarnUnusedResultAttr>() : nullptr;
1426 }
1427
1428 SourceLocation CallExpr::getBeginLoc() const {
1429 if (isa<CXXOperatorCallExpr>(this))
1430 return cast<CXXOperatorCallExpr>(this)->getBeginLoc();
1431
1432 SourceLocation begin = getCallee()->getBeginLoc();
1433 if (begin.isInvalid() && getNumArgs() > 0 && getArg(0))
1434 begin = getArg(0)->getBeginLoc();
1435 return begin;
1436 }
1437 SourceLocation CallExpr::getEndLoc() const {
1438 if (isa<CXXOperatorCallExpr>(this))
1439 return cast<CXXOperatorCallExpr>(this)->getEndLoc();
1440
1441 SourceLocation end = getRParenLoc();
1442 if (end.isInvalid() && getNumArgs() > 0 && getArg(getNumArgs() - 1))
1443 end = getArg(getNumArgs() - 1)->getEndLoc();
1444 return end;
1445 }
1446
1447 OffsetOfExpr *OffsetOfExpr::Create(const ASTContext &C, QualType type,
1448 SourceLocation OperatorLoc,
1449 TypeSourceInfo *tsi,
1450 ArrayRef<OffsetOfNode> comps,
1451 ArrayRef<Expr*> exprs,
1452 SourceLocation RParenLoc) {
1453 void *Mem = C.Allocate(
1454 totalSizeToAlloc<OffsetOfNode, Expr *>(comps.size(), exprs.size()));
1455
1456 return new (Mem) OffsetOfExpr(C, type, OperatorLoc, tsi, comps, exprs,
1457 RParenLoc);
1458 }
1459
1460 OffsetOfExpr *OffsetOfExpr::CreateEmpty(const ASTContext &C,
1461 unsigned numComps, unsigned numExprs) {
1462 void *Mem =
1463 C.Allocate(totalSizeToAlloc<OffsetOfNode, Expr *>(numComps, numExprs));
1464 return new (Mem) OffsetOfExpr(numComps, numExprs);
1465 }
1466
1467 OffsetOfExpr::OffsetOfExpr(const ASTContext &C, QualType type,
1468 SourceLocation OperatorLoc, TypeSourceInfo *tsi,
1469 ArrayRef<OffsetOfNode> comps, ArrayRef<Expr*> exprs,
1470 SourceLocation RParenLoc)
1471 : Expr(OffsetOfExprClass, type, VK_RValue, OK_Ordinary,
1472 /*TypeDependent=*/false,
1473 /*ValueDependent=*/tsi->getType()->isDependentType(),
1474 tsi->getType()->isInstantiationDependentType(),
1475 tsi->getType()->containsUnexpandedParameterPack()),
1476 OperatorLoc(OperatorLoc), RParenLoc(RParenLoc), TSInfo(tsi),
1477 NumComps(comps.size()), NumExprs(exprs.size())
1478 {
1479 for (unsigned i = 0; i != comps.size(); ++i) {
1480 setComponent(i, comps[i]);
1481 }
1482
1483 for (unsigned i = 0; i != exprs.size(); ++i) {
1484 if (exprs[i]->isTypeDependent() || exprs[i]->isValueDependent())
1485 ExprBits.ValueDependent = true;
1486 if (exprs[i]->containsUnexpandedParameterPack())
1487 ExprBits.ContainsUnexpandedParameterPack = true;
1488
1489 setIndexExpr(i, exprs[i]);
1490 }
1491 }
1492
1493 IdentifierInfo *OffsetOfNode::getFieldName() const {
1494 assert(getKind() == Field || getKind() == Identifier);
1495 if (getKind() == Field)
1496 return getField()->getIdentifier();
1497
1498 return reinterpret_cast<IdentifierInfo *> (Data & ~(uintptr_t)Mask);
1499 }
1500
1501 UnaryExprOrTypeTraitExpr::UnaryExprOrTypeTraitExpr(
1502 UnaryExprOrTypeTrait ExprKind, Expr *E, QualType resultType,
1503 SourceLocation op, SourceLocation rp)
1504 : Expr(UnaryExprOrTypeTraitExprClass, resultType, VK_RValue, OK_Ordinary,
1505 false, // Never type-dependent (C++ [temp.dep.expr]p3).
1506 // Value-dependent if the argument is type-dependent.
1507 E->isTypeDependent(), E->isInstantiationDependent(),
1508 E->containsUnexpandedParameterPack()),
1509 OpLoc(op), RParenLoc(rp) {
1510 UnaryExprOrTypeTraitExprBits.Kind = ExprKind;
1511 UnaryExprOrTypeTraitExprBits.IsType = false;
1512 Argument.Ex = E;
1513
1514 // Check to see if we are in the situation where alignof(decl) should be
1515 // dependent because decl's alignment is dependent.
1516 if (ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf) {
1517 if (!isValueDependent() || !isInstantiationDependent()) {
1518 E = E->IgnoreParens();
1519
1520 const ValueDecl *D = nullptr;
1521 if (const auto *DRE = dyn_cast<DeclRefExpr>(E))
1522 D = DRE->getDecl();
1523 else if (const auto *ME = dyn_cast<MemberExpr>(E))
1524 D = ME->getMemberDecl();
1525
1526 if (D) {
1527 for (const auto *I : D->specific_attrs<AlignedAttr>()) {
1528 if (I->isAlignmentDependent()) {
1529 setValueDependent(true);
1530 setInstantiationDependent(true);
1531 break;
1532 }
1533 }
1534 }
1535 }
1536 }
1537 }
1538
1539 MemberExpr *MemberExpr::Create(
1540 const ASTContext &C, Expr *base, bool isarrow, SourceLocation OperatorLoc,
1541 NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateKWLoc,
1542 ValueDecl *memberdecl, DeclAccessPair founddecl,
1543 DeclarationNameInfo nameinfo, const TemplateArgumentListInfo *targs,
1544 QualType ty, ExprValueKind vk, ExprObjectKind ok) {
1545
1546 bool hasQualOrFound = (QualifierLoc ||
1547 founddecl.getDecl() != memberdecl ||
1548 founddecl.getAccess() != memberdecl->getAccess());
1549
1550 bool HasTemplateKWAndArgsInfo = targs || TemplateKWLoc.isValid();
1551 std::size_t Size =
1552 totalSizeToAlloc<MemberExprNameQualifier, ASTTemplateKWAndArgsInfo,
1553 TemplateArgumentLoc>(hasQualOrFound ? 1 : 0,
1554 HasTemplateKWAndArgsInfo ? 1 : 0,
1555 targs ? targs->size() : 0);
1556
1557 void *Mem = C.Allocate(Size, alignof(MemberExpr));
1558 MemberExpr *E = new (Mem)
1559 MemberExpr(base, isarrow, OperatorLoc, memberdecl, nameinfo, ty, vk, ok);
1560
1561 if (hasQualOrFound) {
1562 // FIXME: Wrong. We should be looking at the member declaration we found.
1563 if (QualifierLoc && QualifierLoc.getNestedNameSpecifier()->isDependent()) {
1564 E->setValueDependent(true);
1565 E->setTypeDependent(true);
1566 E->setInstantiationDependent(true);
1567 }
1568 else if (QualifierLoc &&
1569 QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent())
1570 E->setInstantiationDependent(true);
1571
1572 E->MemberExprBits.HasQualifierOrFoundDecl = true;
1573
1574 MemberExprNameQualifier *NQ =
1575 E->getTrailingObjects<MemberExprNameQualifier>();
1576 NQ->QualifierLoc = QualifierLoc;
1577 NQ->FoundDecl = founddecl;
1578 }
1579
1580 E->MemberExprBits.HasTemplateKWAndArgsInfo =
1581 (targs || TemplateKWLoc.isValid());
1582
1583 if (targs) {
1584 bool Dependent = false;
1585 bool InstantiationDependent = false;
1586 bool ContainsUnexpandedParameterPack = false;
1587 E->getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
1588 TemplateKWLoc, *targs, E->getTrailingObjects<TemplateArgumentLoc>(),
1589 Dependent, InstantiationDependent, ContainsUnexpandedParameterPack);
1590 if (InstantiationDependent)
1591 E->setInstantiationDependent(true);
1592 } else if (TemplateKWLoc.isValid()) {
1593 E->getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
1594 TemplateKWLoc);
1595 }
1596
1597 return E;
1598 }
1599
1600 SourceLocation MemberExpr::getBeginLoc() const {
1601 if (isImplicitAccess()) {
1602 if (hasQualifier())
1603 return getQualifierLoc().getBeginLoc();
1604 return MemberLoc;
1605 }
1606
1607 // FIXME: We don't want this to happen. Rather, we should be able to
1608 // detect all kinds of implicit accesses more cleanly.
1609 SourceLocation BaseStartLoc = getBase()->getBeginLoc();
1610 if (BaseStartLoc.isValid())
1611 return BaseStartLoc;
1612 return MemberLoc;
1613 }
1614 SourceLocation MemberExpr::getEndLoc() const {
1615 SourceLocation EndLoc = getMemberNameInfo().getEndLoc();
1616 if (hasExplicitTemplateArgs())
1617 EndLoc = getRAngleLoc();
1618 else if (EndLoc.isInvalid())
1619 EndLoc = getBase()->getEndLoc();
1620 return EndLoc;
1621 }
1622
1623 bool CastExpr::CastConsistency() const {
1624 switch (getCastKind()) {
1625 case CK_DerivedToBase:
1626 case CK_UncheckedDerivedToBase:
1627 case CK_DerivedToBaseMemberPointer:
1628 case CK_BaseToDerived:
1629 case CK_BaseToDerivedMemberPointer:
1630 assert(!path_empty() && "Cast kind should have a base path!");
1631 break;
1632
1633 case CK_CPointerToObjCPointerCast:
1634 assert(getType()->isObjCObjectPointerType());
1635 assert(getSubExpr()->getType()->isPointerType());
1636 goto CheckNoBasePath;
1637
1638 case CK_BlockPointerToObjCPointerCast:
1639 assert(getType()->isObjCObjectPointerType());
1640 assert(getSubExpr()->getType()->isBlockPointerType());
1641 goto CheckNoBasePath;
1642
1643 case CK_ReinterpretMemberPointer:
1644 assert(getType()->isMemberPointerType());
1645 assert(getSubExpr()->getType()->isMemberPointerType());
1646 goto CheckNoBasePath;
1647
1648 case CK_BitCast:
1649 // Arbitrary casts to C pointer types count as bitcasts.
1650 // Otherwise, we should only have block and ObjC pointer casts
1651 // here if they stay within the type kind.
1652 if (!getType()->isPointerType()) {
1653 assert(getType()->isObjCObjectPointerType() ==
1654 getSubExpr()->getType()->isObjCObjectPointerType());
1655 assert(getType()->isBlockPointerType() ==
1656 getSubExpr()->getType()->isBlockPointerType());
1657 }
1658 goto CheckNoBasePath;
1659
1660 case CK_AnyPointerToBlockPointerCast:
1661 assert(getType()->isBlockPointerType());
1662 assert(getSubExpr()->getType()->isAnyPointerType() &&
1663 !getSubExpr()->getType()->isBlockPointerType());
1664 goto CheckNoBasePath;
1665
1666 case CK_CopyAndAutoreleaseBlockObject:
1667 assert(getType()->isBlockPointerType());
1668 assert(getSubExpr()->getType()->isBlockPointerType());
1669 goto CheckNoBasePath;
1670
1671 case CK_FunctionToPointerDecay:
1672 assert(getType()->isPointerType());
1673 assert(getSubExpr()->getType()->isFunctionType());
1674 goto CheckNoBasePath;
1675
1676 case CK_AddressSpaceConversion: {
1677 auto Ty = getType();
1678 auto SETy = getSubExpr()->getType();
1679 assert(getValueKindForType(Ty) == Expr::getValueKindForType(SETy));
1680 if (isRValue()) {
1681 Ty = Ty->getPointeeType();
1682 SETy = SETy->getPointeeType();
1683 }
1684 assert(!Ty.isNull() && !SETy.isNull() &&
1685 Ty.getAddressSpace() != SETy.getAddressSpace());
1686 goto CheckNoBasePath;
1687 }
1688 // These should not have an inheritance path.
1689 case CK_Dynamic:
1690 case CK_ToUnion:
1691 case CK_ArrayToPointerDecay:
1692 case CK_NullToMemberPointer:
1693 case CK_NullToPointer:
1694 case CK_ConstructorConversion:
1695 case CK_IntegralToPointer:
1696 case CK_PointerToIntegral:
1697 case CK_ToVoid:
1698 case CK_VectorSplat:
1699 case CK_IntegralCast:
1700 case CK_BooleanToSignedIntegral:
1701 case CK_IntegralToFloating:
1702 case CK_FloatingToIntegral:
1703 case CK_FloatingCast:
1704 case CK_ObjCObjectLValueCast:
1705 case CK_FloatingRealToComplex:
1706 case CK_FloatingComplexToReal:
1707 case CK_FloatingComplexCast:
1708 case CK_FloatingComplexToIntegralComplex:
1709 case CK_IntegralRealToComplex:
1710 case CK_IntegralComplexToReal:
1711 case CK_IntegralComplexCast:
1712 case CK_IntegralComplexToFloatingComplex:
1713 case CK_ARCProduceObject:
1714 case CK_ARCConsumeObject:
1715 case CK_ARCReclaimReturnedObject:
1716 case CK_ARCExtendBlockObject:
1717 case CK_ZeroToOCLOpaqueType:
1718 case CK_IntToOCLSampler:
1719 case CK_FixedPointCast:
1720 assert(!getType()->isBooleanType() && "unheralded conversion to bool");
1721 goto CheckNoBasePath;
1722
1723 case CK_Dependent:
1724 case CK_LValueToRValue:
1725 case CK_NoOp:
1726 case CK_AtomicToNonAtomic:
1727 case CK_NonAtomicToAtomic:
1728 case CK_PointerToBoolean:
1729 case CK_IntegralToBoolean:
1730 case CK_FloatingToBoolean:
1731 case CK_MemberPointerToBoolean:
1732 case CK_FloatingComplexToBoolean:
1733 case CK_IntegralComplexToBoolean:
1734 case CK_LValueBitCast: // -> bool&
1735 case CK_UserDefinedConversion: // operator bool()
1736 case CK_BuiltinFnToFnPtr:
1737 case CK_FixedPointToBoolean:
1738 CheckNoBasePath:
1739 assert(path_empty() && "Cast kind should not have a base path!");
1740 break;
1741 }
1742 return true;
1743 }
1744
1745 const char *CastExpr::getCastKindName(CastKind CK) {
1746 switch (CK) {
1747 #define CAST_OPERATION(Name) case CK_##Name: return #Name;
1748 #include "clang/AST/OperationKinds.def"
1749 }
1750 llvm_unreachable("Unhandled cast kind!");
1751 }
1752
1753 namespace {
1754 const Expr *skipImplicitTemporary(const Expr *E) {
1755 // Skip through reference binding to temporary.
1756 if (auto *Materialize = dyn_cast<MaterializeTemporaryExpr>(E))
1757 E = Materialize->GetTemporaryExpr();
1758
1759 // Skip any temporary bindings; they're implicit.
1760 if (auto *Binder = dyn_cast<CXXBindTemporaryExpr>(E))
1761 E = Binder->getSubExpr();
1762
1763 return E;
1764 }
1765 }
1766
1767 Expr *CastExpr::getSubExprAsWritten() {
1768 const Expr *SubExpr = nullptr;
1769 const CastExpr *E = this;
1770 do {
1771 SubExpr = skipImplicitTemporary(E->getSubExpr());
1772
1773 // Conversions by constructor and conversion functions have a
1774 // subexpression describing the call; strip it off.
1775 if (E->getCastKind() == CK_ConstructorConversion)
1776 SubExpr =
1777 skipImplicitTemporary(cast<CXXConstructExpr>(SubExpr)->getArg(0));
1778 else if (E->getCastKind() == CK_UserDefinedConversion) {
1779 assert((isa<CXXMemberCallExpr>(SubExpr) ||
1780 isa<BlockExpr>(SubExpr)) &&
1781 "Unexpected SubExpr for CK_UserDefinedConversion.");
1782 if (auto *MCE = dyn_cast<CXXMemberCallExpr>(SubExpr))
1783 SubExpr = MCE->getImplicitObjectArgument();
1784 }
1785
1786 // If the subexpression we're left with is an implicit cast, look
1787 // through that, too.
1788 } while ((E = dyn_cast<ImplicitCastExpr>(SubExpr)));
1789
1790 return const_cast<Expr*>(SubExpr);
1791 }
1792
1793 NamedDecl *CastExpr::getConversionFunction() const {
1794 const Expr *SubExpr = nullptr;
1795
1796 for (const CastExpr *E = this; E; E = dyn_cast<ImplicitCastExpr>(SubExpr)) {
1797 SubExpr = skipImplicitTemporary(E->getSubExpr());
1798
1799 if (E->getCastKind() == CK_ConstructorConversion)
1800 return cast<CXXConstructExpr>(SubExpr)->getConstructor();
1801
1802 if (E->getCastKind() == CK_UserDefinedConversion) {
1803 if (auto *MCE = dyn_cast<CXXMemberCallExpr>(SubExpr))
1804 return MCE->getMethodDecl();
1805 }
1806 }
1807
1808 return nullptr;
1809 }
1810
1811 CXXBaseSpecifier **CastExpr::path_buffer() {
1812 switch (getStmtClass()) {
1813 #define ABSTRACT_STMT(x)
1814 #define CASTEXPR(Type, Base) \
1815 case Stmt::Type##Class: \
1816 return static_cast<Type *>(this)->getTrailingObjects<CXXBaseSpecifier *>();
1817 #define STMT(Type, Base)
1818 #include "clang/AST/StmtNodes.inc"
1819 default:
1820 llvm_unreachable("non-cast expressions not possible here");
1821 }
1822 }
1823
1824 const FieldDecl *CastExpr::getTargetFieldForToUnionCast(QualType unionType,
1825 QualType opType) {
1826 auto RD = unionType->castAs<RecordType>()->getDecl();
1827 return getTargetFieldForToUnionCast(RD, opType);
1828 }
1829
1830 const FieldDecl *CastExpr::getTargetFieldForToUnionCast(const RecordDecl *RD,
1831 QualType OpType) {
1832 auto &Ctx = RD->getASTContext();
1833 RecordDecl::field_iterator Field, FieldEnd;
1834 for (Field = RD->field_begin(), FieldEnd = RD->field_end();
1835 Field != FieldEnd; ++Field) {
1836 if (Ctx.hasSameUnqualifiedType(Field->getType(), OpType) &&
1837 !Field->isUnnamedBitfield()) {
1838 return *Field;
1839 }
1840 }
1841 return nullptr;
1842 }
1843
1844 ImplicitCastExpr *ImplicitCastExpr::Create(const ASTContext &C, QualType T,
1845 CastKind Kind, Expr *Operand,
1846 const CXXCastPath *BasePath,
1847 ExprValueKind VK) {
1848 unsigned PathSize = (BasePath ? BasePath->size() : 0);
1849 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
1850 ImplicitCastExpr *E =
1851 new (Buffer) ImplicitCastExpr(T, Kind, Operand, PathSize, VK);
1852 if (PathSize)
1853 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
1854 E->getTrailingObjects<CXXBaseSpecifier *>());
1855 return E;
1856 }
1857
1858 ImplicitCastExpr *ImplicitCastExpr::CreateEmpty(const ASTContext &C,
1859 unsigned PathSize) {
1860 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
1861 return new (Buffer) ImplicitCastExpr(EmptyShell(), PathSize);
1862 }
1863
1864
1865 CStyleCastExpr *CStyleCastExpr::Create(const ASTContext &C, QualType T,
1866 ExprValueKind VK, CastKind K, Expr *Op,
1867 const CXXCastPath *BasePath,
1868 TypeSourceInfo *WrittenTy,
1869 SourceLocation L, SourceLocation R) {
1870 unsigned PathSize = (BasePath ? BasePath->size() : 0);
1871 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
1872 CStyleCastExpr *E =
1873 new (Buffer) CStyleCastExpr(T, VK, K, Op, PathSize, WrittenTy, L, R);
1874 if (PathSize)
1875 std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
1876 E->getTrailingObjects<CXXBaseSpecifier *>());
1877 return E;
1878 }
1879
1880 CStyleCastExpr *CStyleCastExpr::CreateEmpty(const ASTContext &C,
1881 unsigned PathSize) {
1882 void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
1883 return new (Buffer) CStyleCastExpr(EmptyShell(), PathSize);
1884 }
1885
1886 /// getOpcodeStr - Turn an Opcode enum value into the punctuation char it
1887 /// corresponds to, e.g. "<<=".
1888 StringRef BinaryOperator::getOpcodeStr(Opcode Op) {
1889 switch (Op) {
1890 #define BINARY_OPERATION(Name, Spelling) case BO_##Name: return Spelling;
1891 #include "clang/AST/OperationKinds.def"
1892 }
1893 llvm_unreachable("Invalid OpCode!");
1894 }
1895
1896 BinaryOperatorKind
1897 BinaryOperator::getOverloadedOpcode(OverloadedOperatorKind OO) {
1898 switch (OO) {
1899 default: llvm_unreachable("Not an overloadable binary operator");
1900 case OO_Plus: return BO_Add;
1901 case OO_Minus: return BO_Sub;
1902 case OO_Star: return BO_Mul;
1903 case OO_Slash: return BO_Div;
1904 case OO_Percent: return BO_Rem;
1905 case OO_Caret: return BO_Xor;
1906 case OO_Amp: return BO_And;
1907 case OO_Pipe: return BO_Or;
1908 case OO_Equal: return BO_Assign;
1909 case OO_Spaceship: return BO_Cmp;
1910 case OO_Less: return BO_LT;
1911 case OO_Greater: return BO_GT;
1912 case OO_PlusEqual: return BO_AddAssign;
1913 case OO_MinusEqual: return BO_SubAssign;
1914 case OO_StarEqual: return BO_MulAssign;
1915 case OO_SlashEqual: return BO_DivAssign;
1916 case OO_PercentEqual: return BO_RemAssign;
1917 case OO_CaretEqual: return BO_XorAssign;
1918 case OO_AmpEqual: return BO_AndAssign;
1919 case OO_PipeEqual: return BO_OrAssign;
1920 case OO_LessLess: return BO_Shl;
1921 case OO_GreaterGreater: return BO_Shr;
1922 case OO_LessLessEqual: return BO_ShlAssign;
1923 case OO_GreaterGreaterEqual: return BO_ShrAssign;
1924 case OO_EqualEqual: return BO_EQ;
1925 case OO_ExclaimEqual: return BO_NE;
1926 case OO_LessEqual: return BO_LE;
1927 case OO_GreaterEqual: return BO_GE;
1928 case OO_AmpAmp: return BO_LAnd;
1929 case OO_PipePipe: return BO_LOr;
1930 case OO_Comma: return BO_Comma;
1931 case OO_ArrowStar: return BO_PtrMemI;
1932 }
1933 }
1934
1935 OverloadedOperatorKind BinaryOperator::getOverloadedOperator(Opcode Opc) {
1936 static const OverloadedOperatorKind OverOps[] = {
1937 /* .* Cannot be overloaded */OO_None, OO_ArrowStar,
1938 OO_Star, OO_Slash, OO_Percent,
1939 OO_Plus, OO_Minus,
1940 OO_LessLess, OO_GreaterGreater,
1941 OO_Spaceship,
1942 OO_Less, OO_Greater, OO_LessEqual, OO_GreaterEqual,
1943 OO_EqualEqual, OO_ExclaimEqual,
1944 OO_Amp,
1945 OO_Caret,
1946 OO_Pipe,
1947 OO_AmpAmp,
1948 OO_PipePipe,
1949 OO_Equal, OO_StarEqual,
1950 OO_SlashEqual, OO_PercentEqual,
1951 OO_PlusEqual, OO_MinusEqual,
1952 OO_LessLessEqual, OO_GreaterGreaterEqual,
1953 OO_AmpEqual, OO_CaretEqual,
1954 OO_PipeEqual,
1955 OO_Comma
1956 };
1957 return OverOps[Opc];
1958 }
1959
1960 bool BinaryOperator::isNullPointerArithmeticExtension(ASTContext &Ctx,
1961 Opcode Opc,
1962 Expr *LHS, Expr *RHS) {
1963 if (Opc != BO_Add)
1964 return false;
1965
1966 // Check that we have one pointer and one integer operand.
1967 Expr *PExp;
1968 if (LHS->getType()->isPointerType()) {
1969 if (!RHS->getType()->isIntegerType())
1970 return false;
1971 PExp = LHS;
1972 } else if (RHS->getType()->isPointerType()) {
1973 if (!LHS->getType()->isIntegerType())
1974 return false;
1975 PExp = RHS;
1976 } else {
1977 return false;
1978 }
1979
1980 // Check that the pointer is a nullptr.
1981 if (!PExp->IgnoreParenCasts()
1982 ->isNullPointerConstant(Ctx, Expr::NPC_ValueDependentIsNotNull))
1983 return false;
1984
1985 // Check that the pointee type is char-sized.
1986 const PointerType *PTy = PExp->getType()->getAs<PointerType>();
1987 if (!PTy || !PTy->getPointeeType()->isCharType())
1988 return false;
1989
1990 return true;
1991 }
1992 InitListExpr::InitListExpr(const ASTContext &C, SourceLocation lbraceloc,
1993 ArrayRef<Expr*> initExprs, SourceLocation rbraceloc)
1994 : Expr(InitListExprClass, QualType(), VK_RValue, OK_Ordinary, false, false,
1995 false, false),
1996 InitExprs(C, initExprs.size()),
1997 LBraceLoc(lbraceloc), RBraceLoc(rbraceloc), AltForm(nullptr, true)
1998 {
1999 sawArrayRangeDesignator(false);
2000 for (unsigned I = 0; I != initExprs.size(); ++I) {
2001 if (initExprs[I]->isTypeDependent())
2002 ExprBits.TypeDependent = true;
2003 if (initExprs[I]->isValueDependent())
2004 ExprBits.ValueDependent = true;
2005 if (initExprs[I]->isInstantiationDependent())
2006 ExprBits.InstantiationDependent = true;
2007 if (initExprs[I]->containsUnexpandedParameterPack())
2008 ExprBits.ContainsUnexpandedParameterPack = true;
2009 }
2010
2011 InitExprs.insert(C, InitExprs.end(), initExprs.begin(), initExprs.end());
2012 }
2013
2014 void InitListExpr::reserveInits(const ASTContext &C, unsigned NumInits) {
2015 if (NumInits > InitExprs.size())
2016 InitExprs.reserve(C, NumInits);
2017 }
2018
2019 void InitListExpr::resizeInits(const ASTContext &C, unsigned NumInits) {
2020 InitExprs.resize(C, NumInits, nullptr);
2021 }
2022
2023 Expr *InitListExpr::updateInit(const ASTContext &C, unsigned Init, Expr *expr) {
2024 if (Init >= InitExprs.size()) {
2025 InitExprs.insert(C, InitExprs.end(), Init - InitExprs.size() + 1, nullptr);
2026 setInit(Init, expr);
2027 return nullptr;
2028 }
2029
2030 Expr *Result = cast_or_null<Expr>(InitExprs[Init]);
2031 setInit(Init, expr);
2032 return Result;
2033 }
2034
2035 void InitListExpr::setArrayFiller(Expr *filler) {
2036 assert(!hasArrayFiller() && "Filler already set!");
2037 ArrayFillerOrUnionFieldInit = filler;
2038 // Fill out any "holes" in the array due to designated initializers.
2039 Expr **inits = getInits();
2040 for (unsigned i = 0, e = getNumInits(); i != e; ++i)
2041 if (inits[i] == nullptr)
2042 inits[i] = filler;
2043 }
2044
2045 bool InitListExpr::isStringLiteralInit() const {
2046 if (getNumInits() != 1)
2047 return false;
2048 const ArrayType *AT = getType()->getAsArrayTypeUnsafe();
2049 if (!AT || !AT->getElementType()->isIntegerType())
2050 return false;
2051 // It is possible for getInit() to return null.
2052 const Expr *Init = getInit(0);
2053 if (!Init)
2054 return false;
2055 Init = Init->IgnoreParens();
2056 return isa<StringLiteral>(Init) || isa<ObjCEncodeExpr>(Init);
2057 }
2058
2059 bool InitListExpr::isTransparent() const {
2060 assert(isSemanticForm() && "syntactic form never semantically transparent");
2061
2062 // A glvalue InitListExpr is always just sugar.
2063 if (isGLValue()) {
2064 assert(getNumInits() == 1 && "multiple inits in glvalue init list");
2065 return true;
2066 }
2067
2068 // Otherwise, we're sugar if and only if we have exactly one initializer that
2069 // is of the same type.
2070 if (getNumInits() != 1 || !getInit(0))
2071 return false;
2072
2073 // Don't confuse aggregate initialization of a struct X { X &x; }; with a
2074 // transparent struct copy.
2075 if (!getInit(0)->isRValue() && getType()->isRecordType())
2076 return false;
2077
2078 return getType().getCanonicalType() ==
2079 getInit(0)->getType().getCanonicalType();
2080 }
2081
2082 bool InitListExpr::isIdiomaticZeroInitializer(const LangOptions &LangOpts) const {
2083 assert(isSyntacticForm() && "only test syntactic form as zero initializer");
2084
2085 if (LangOpts.CPlusPlus || getNumInits() != 1) {
2086 return false;
2087 }
2088
2089 const IntegerLiteral *Lit = dyn_cast<IntegerLiteral>(getInit(0));
2090 return Lit && Lit->getValue() == 0;
2091 }
2092
2093 SourceLocation InitListExpr::getBeginLoc() const {
2094 if (InitListExpr *SyntacticForm = getSyntacticForm())
2095 return SyntacticForm->getBeginLoc();
2096 SourceLocation Beg = LBraceLoc;
2097 if (Beg.isInvalid()) {
2098 // Find the first non-null initializer.
2099 for (InitExprsTy::const_iterator I = InitExprs.begin(),
2100 E = InitExprs.end();
2101 I != E; ++I) {
2102 if (Stmt *S = *I) {
2103 Beg = S->getBeginLoc();
2104 break;
2105 }
2106 }
2107 }
2108 return Beg;
2109 }
2110
2111 SourceLocation InitListExpr::getEndLoc() const {
2112 if (InitListExpr *SyntacticForm = getSyntacticForm())
2113 return SyntacticForm->getEndLoc();
2114 SourceLocation End = RBraceLoc;
2115 if (End.isInvalid()) {
2116 // Find the first non-null initializer from the end.
2117 for (InitExprsTy::const_reverse_iterator I = InitExprs.rbegin(),
2118 E = InitExprs.rend();
2119 I != E; ++I) {
2120 if (Stmt *S = *I) {
2121 End = S->getEndLoc();
2122 break;
2123 }
2124 }
2125 }
2126 return End;
2127 }
2128
2129 /// getFunctionType - Return the underlying function type for this block.
2130 ///
2131 const FunctionProtoType *BlockExpr::getFunctionType() const {
2132 // The block pointer is never sugared, but the function type might be.
2133 return cast<BlockPointerType>(getType())
2134 ->getPointeeType()->castAs<FunctionProtoType>();
2135 }
2136
2137 SourceLocation BlockExpr::getCaretLocation() const {
2138 return TheBlock->getCaretLocation();
2139 }
2140 const Stmt *BlockExpr::getBody() const {
2141 return TheBlock->getBody();
2142 }
2143 Stmt *BlockExpr::getBody() {
2144 return TheBlock->getBody();
2145 }
2146
2147
2148 //===----------------------------------------------------------------------===//
2149 // Generic Expression Routines
2150 //===----------------------------------------------------------------------===//
2151
2152 /// isUnusedResultAWarning - Return true if this immediate expression should
2153 /// be warned about if the result is unused. If so, fill in Loc and Ranges
2154 /// with location to warn on and the source range[s] to report with the
2155 /// warning.
2156 bool Expr::isUnusedResultAWarning(const Expr *&WarnE, SourceLocation &Loc,
2157 SourceRange &R1, SourceRange &R2,
2158 ASTContext &Ctx) const {
2159 // Don't warn if the expr is type dependent. The type could end up
2160 // instantiating to void.
2161 if (isTypeDependent())
2162 return false;
2163
2164 switch (getStmtClass()) {
2165 default:
2166 if (getType()->isVoidType())
2167 return false;
2168 WarnE = this;
2169 Loc = getExprLoc();
2170 R1 = getSourceRange();
2171 return true;
2172 case ParenExprClass:
2173 return cast<ParenExpr>(this)->getSubExpr()->
2174 isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
2175 case GenericSelectionExprClass:
2176 return cast<GenericSelectionExpr>(this)->getResultExpr()->
2177 isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
2178 case CoawaitExprClass:
2179 case CoyieldExprClass:
2180 return cast<CoroutineSuspendExpr>(this)->getResumeExpr()->
2181 isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
2182 case ChooseExprClass:
2183 return cast<ChooseExpr>(this)->getChosenSubExpr()->
2184 isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
2185 case UnaryOperatorClass: {
2186 const UnaryOperator *UO = cast<UnaryOperator>(this);
2187
2188 switch (UO->getOpcode()) {
2189 case UO_Plus:
2190 case UO_Minus:
2191 case UO_AddrOf:
2192 case UO_Not:
2193 case UO_LNot:
2194 case UO_Deref:
2195 break;
2196 case UO_Coawait:
2197 // This is just the 'operator co_await' call inside the guts of a
2198 // dependent co_await call.
2199 case UO_PostInc:
2200 case UO_PostDec:
2201 case UO_PreInc:
2202 case UO_PreDec: // ++/--
2203 return false; // Not a warning.
2204 case UO_Real:
2205 case UO_Imag:
2206 // accessing a piece of a volatile complex is a side-effect.
2207 if (Ctx.getCanonicalType(UO->getSubExpr()->getType())
2208 .isVolatileQualified())
2209 return false;
2210 break;
2211 case UO_Extension:
2212 return UO->getSubExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
2213 }
2214 WarnE = this;
2215 Loc = UO->getOperatorLoc();
2216 R1 = UO->getSubExpr()->getSourceRange();
2217 return true;
2218 }
2219 case BinaryOperatorClass: {
2220 const BinaryOperator *BO = cast<BinaryOperator>(this);
2221 switch (BO->getOpcode()) {
2222 default:
2223 break;
2224 // Consider the RHS of comma for side effects. LHS was checked by
2225 // Sema::CheckCommaOperands.
2226 case BO_Comma:
2227 // ((foo = <blah>), 0) is an idiom for hiding the result (and
2228 // lvalue-ness) of an assignment written in a macro.
2229 if (IntegerLiteral *IE =
2230 dyn_cast<IntegerLiteral>(BO->getRHS()->IgnoreParens()))
2231 if (IE->getValue() == 0)
2232 return false;
2233 return BO->getRHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
2234 // Consider '||', '&&' to have side effects if the LHS or RHS does.
2235 case BO_LAnd:
2236 case BO_LOr:
2237 if (!BO->getLHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx) ||
2238 !BO->getRHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx))
2239 return false;
2240 break;
2241 }
2242 if (BO->isAssignmentOp())
2243 return false;
2244 WarnE = this;
2245 Loc = BO->getOperatorLoc();
2246 R1 = BO->getLHS()->getSourceRange();
2247 R2 = BO->getRHS()->getSourceRange();
2248 return true;
2249 }
2250 case CompoundAssignOperatorClass:
2251 case VAArgExprClass:
2252 case AtomicExprClass:
2253 return false;
2254
2255 case ConditionalOperatorClass: {
2256 // If only one of the LHS or RHS is a warning, the operator might
2257 // be being used for control flow. Only warn if both the LHS and
2258 // RHS are warnings.
2259 const ConditionalOperator *Exp = cast<ConditionalOperator>(this);
2260 if (!Exp->getRHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx))
2261 return false;
2262 if (!Exp->getLHS())
2263 return true;
2264 return Exp->getLHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
2265 }
2266
2267 case MemberExprClass:
2268 WarnE = this;
2269 Loc = cast<MemberExpr>(this)->getMemberLoc();
2270 R1 = SourceRange(Loc, Loc);
2271 R2 = cast<MemberExpr>(this)->getBase()->getSourceRange();
2272 return true;
2273
2274 case ArraySubscriptExprClass:
2275 WarnE = this;
2276 Loc = cast<ArraySubscriptExpr>(this)->getRBracketLoc();
2277 R1 = cast<ArraySubscriptExpr>(this)->getLHS()->getSourceRange();
2278 R2 = cast<ArraySubscriptExpr>(this)->getRHS()->getSourceRange();
2279 return true;
2280
2281 case CXXOperatorCallExprClass: {
2282 // Warn about operator ==,!=,<,>,<=, and >= even when user-defined operator
2283 // overloads as there is no reasonable way to define these such that they
2284 // have non-trivial, desirable side-effects. See the -Wunused-comparison
2285 // warning: operators == and != are commonly typo'ed, and so warning on them
2286 // provides additional value as well. If this list is updated,
2287 // DiagnoseUnusedComparison should be as well.
2288 const CXXOperatorCallExpr *Op = cast<CXXOperatorCallExpr>(this);
2289 switch (Op->getOperator()) {
2290 default:
2291 break;
2292 case OO_EqualEqual:
2293 case OO_ExclaimEqual:
2294 case OO_Less:
2295 case OO_Greater:
2296 case OO_GreaterEqual:
2297 case OO_LessEqual:
2298 if (Op->getCallReturnType(Ctx)->isReferenceType() ||
2299 Op->getCallReturnType(Ctx)->isVoidType())
2300 break;
2301 WarnE = this;
2302 Loc = Op->getOperatorLoc();
2303 R1 = Op->getSourceRange();
2304 return true;
2305 }
2306
2307 // Fallthrough for generic call handling.
2308 LLVM_FALLTHROUGH;
2309 }
2310 case CallExprClass:
2311 case CXXMemberCallExprClass:
2312 case UserDefinedLiteralClass: {
2313 // If this is a direct call, get the callee.
2314 const CallExpr *CE = cast<CallExpr>(this);
2315 if (const Decl *FD = CE->getCalleeDecl()) {
2316 // If the callee has attribute pure, const, or warn_unused_result, warn
2317 // about it. void foo() { strlen("bar"); } should warn.
2318 //
2319 // Note: If new cases are added here, DiagnoseUnusedExprResult should be
2320 // updated to match for QoI.
2321 if (CE->hasUnusedResultAttr(Ctx) ||
2322 FD->hasAttr<PureAttr>() || FD->hasAttr<ConstAttr>()) {
2323 WarnE = this;
2324 Loc = CE->getCallee()->getBeginLoc();
2325 R1 = CE->getCallee()->getSourceRange();
2326
2327 if (unsigned NumArgs = CE->getNumArgs())
2328 R2 = SourceRange(CE->getArg(0)->getBeginLoc(),
2329 CE->getArg(NumArgs - 1)->getEndLoc());
2330 return true;
2331 }
2332 }
2333 return false;
2334 }
2335
2336 // If we don't know precisely what we're looking at, let's not warn.
2337 case UnresolvedLookupExprClass:
2338 case CXXUnresolvedConstructExprClass:
2339 return false;
2340
2341 case CXXTemporaryObjectExprClass:
2342 case CXXConstructExprClass: {
2343 if (const CXXRecordDecl *Type = getType()->getAsCXXRecordDecl()) {
2344 if (Type->hasAttr<WarnUnusedAttr>()) {
2345 WarnE = this;
2346 Loc = getBeginLoc();
2347 R1 = getSourceRange();
2348 return true;
2349 }
2350 }
2351 return false;
2352 }
2353
2354 case ObjCMessageExprClass: {
2355 const ObjCMessageExpr *ME = cast<ObjCMessageExpr>(this);
2356 if (Ctx.getLangOpts().ObjCAutoRefCount &&
2357 ME->isInstanceMessage() &&
2358 !ME->getType()->isVoidType() &&
2359 ME->getMethodFamily() == OMF_init) {
2360 WarnE = this;
2361 Loc = getExprLoc();
2362 R1 = ME->getSourceRange();
2363 return true;
2364 }
2365
2366 if (const ObjCMethodDecl *MD = ME->getMethodDecl())
2367 if (MD->hasAttr<WarnUnusedResultAttr>()) {
2368 WarnE = this;
2369 Loc = getExprLoc();
2370 return true;
2371 }
2372
2373 return false;
2374 }
2375
2376 case ObjCPropertyRefExprClass:
2377 WarnE = this;
2378 Loc = getExprLoc();
2379 R1 = getSourceRange();
2380 return true;
2381
2382 case PseudoObjectExprClass: {
2383 const PseudoObjectExpr *PO = cast<PseudoObjectExpr>(this);
2384
2385 // Only complain about things that have the form of a getter.
2386 if (isa<UnaryOperator>(PO->getSyntacticForm()) ||
2387 isa<BinaryOperator>(PO->getSyntacticForm()))
2388 return false;
2389
2390 WarnE = this;
2391 Loc = getExprLoc();
2392 R1 = getSourceRange();
2393 return true;
2394 }
2395
2396 case StmtExprClass: {
2397 // Statement exprs don't logically have side effects themselves, but are
2398 // sometimes used in macros in ways that give them a type that is unused.
2399 // For example ({ blah; foo(); }) will end up with a type if foo has a type.
2400 // however, if the result of the stmt expr is dead, we don't want to emit a
2401 // warning.
2402 const CompoundStmt *CS = cast<StmtExpr>(this)->getSubStmt();
2403 if (!CS->body_empty()) {
2404 if (const Expr *E = dyn_cast<Expr>(CS->body_back()))
2405 return E->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
2406 if (const LabelStmt *Label = dyn_cast<LabelStmt>(CS->body_back()))
2407 if (const Expr *E = dyn_cast<Expr>(Label->getSubStmt()))
2408 return E->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
2409 }
2410
2411 if (getType()->isVoidType())
2412 return false;
2413 WarnE = this;
2414 Loc = cast<StmtExpr>(this)->getLParenLoc();
2415 R1 = getSourceRange();
2416 return true;
2417 }
2418 case CXXFunctionalCastExprClass:
2419 case CStyleCastExprClass: {
2420 // Ignore an explicit cast to void unless the operand is a non-trivial
2421 // volatile lvalue.
2422 const CastExpr *CE = cast<CastExpr>(this);
2423 if (CE->getCastKind() == CK_ToVoid) {
2424 if (CE->getSubExpr()->isGLValue() &&
2425 CE->getSubExpr()->getType().isVolatileQualified()) {
2426 const DeclRefExpr *DRE =
2427 dyn_cast<DeclRefExpr>(CE->getSubExpr()->IgnoreParens());
2428 if (!(DRE && isa<VarDecl>(DRE->getDecl()) &&
2429 cast<VarDecl>(DRE->getDecl())->hasLocalStorage()) &&
2430 !isa<CallExpr>(CE->getSubExpr()->IgnoreParens())) {
2431 return CE->getSubExpr()->isUnusedResultAWarning(WarnE, Loc,
2432 R1, R2, Ctx);
2433 }
2434 }
2435 return false;
2436 }
2437
2438 // If this is a cast to a constructor conversion, check the operand.
2439 // Otherwise, the result of the cast is unused.
2440 if (CE->getCastKind() == CK_ConstructorConversion)
2441 return CE->getSubExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
2442
2443 WarnE = this;
2444 if (const CXXFunctionalCastExpr *CXXCE =
2445 dyn_cast<CXXFunctionalCastExpr>(this)) {
2446 Loc = CXXCE->getBeginLoc();
2447 R1 = CXXCE->getSubExpr()->getSourceRange();
2448 } else {
2449 const CStyleCastExpr *CStyleCE = cast<CStyleCastExpr>(this);
2450 Loc = CStyleCE->getLParenLoc();
2451 R1 = CStyleCE->getSubExpr()->getSourceRange();
2452 }
2453 return true;
2454 }
2455 case ImplicitCastExprClass: {
2456 const CastExpr *ICE = cast<ImplicitCastExpr>(this);
2457
2458 // lvalue-to-rvalue conversion on a volatile lvalue is a side-effect.
2459 if (ICE->getCastKind() == CK_LValueToRValue &&
2460 ICE->getSubExpr()->getType().isVolatileQualified())
2461 return false;
2462
2463 return ICE->getSubExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
2464 }
2465 case CXXDefaultArgExprClass:
2466 return (cast<CXXDefaultArgExpr>(this)
2467 ->getExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx));
2468 case CXXDefaultInitExprClass:
2469 return (cast<CXXDefaultInitExpr>(this)
2470 ->getExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx));
2471
2472 case CXXNewExprClass:
2473 // FIXME: In theory, there might be new expressions that don't have side
2474 // effects (e.g. a placement new with an uninitialized POD).
2475 case CXXDeleteExprClass:
2476 return false;
2477 case MaterializeTemporaryExprClass:
2478 return cast<MaterializeTemporaryExpr>(this)->GetTemporaryExpr()
2479 ->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
2480 case CXXBindTemporaryExprClass:
2481 return cast<CXXBindTemporaryExpr>(this)->getSubExpr()
2482 ->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
2483 case ExprWithCleanupsClass:
2484 return cast<ExprWithCleanups>(this)->getSubExpr()
2485 ->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
2486 }
2487 }
2488
2489 /// isOBJCGCCandidate - Check if an expression is objc gc'able.
2490 /// returns true, if it is; false otherwise.
2491 bool Expr::isOBJCGCCandidate(ASTContext &Ctx) const {
2492 const Expr *E = IgnoreParens();
2493 switch (E->getStmtClass()) {
2494 default:
2495 return false;
2496 case ObjCIvarRefExprClass:
2497 return true;
2498 case Expr::UnaryOperatorClass:
2499 return cast<UnaryOperator>(E)->getSubExpr()->isOBJCGCCandidate(Ctx);
2500 case ImplicitCastExprClass:
2501 return cast<ImplicitCastExpr>(E)->getSubExpr()->isOBJCGCCandidate(Ctx);
2502 case MaterializeTemporaryExprClass:
2503 return cast<MaterializeTemporaryExpr>(E)->GetTemporaryExpr()
2504 ->isOBJCGCCandidate(Ctx);
2505 case CStyleCastExprClass:
2506 return cast<CStyleCastExpr>(E)->getSubExpr()->isOBJCGCCandidate(Ctx);
2507 case DeclRefExprClass: {
2508 const Decl *D = cast<DeclRefExpr>(E)->getDecl();
2509
2510 if (const VarDecl *VD = dyn_cast<VarDecl>(D)) {
2511 if (VD->hasGlobalStorage())
2512 return true;
2513 QualType T = VD->getType();
2514 // dereferencing to a pointer is always a gc'able candidate,
2515 // unless it is __weak.
2516 return T->isPointerType() &&
2517 (Ctx.getObjCGCAttrKind(T) != Qualifiers::Weak);
2518 }
2519 return false;
2520 }
2521 case MemberExprClass: {
2522 const MemberExpr *M = cast<MemberExpr>(E);
2523 return M->getBase()->isOBJCGCCandidate(Ctx);
2524 }
2525 case ArraySubscriptExprClass:
2526 return cast<ArraySubscriptExpr>(E)->getBase()->isOBJCGCCandidate(Ctx);
2527 }
2528 }
2529
2530 bool Expr::isBoundMemberFunction(ASTContext &Ctx) const {
2531 if (isTypeDependent())
2532 return false;
2533 return ClassifyLValue(Ctx) == Expr::LV_MemberFunction;
2534 }
2535
2536 QualType Expr::findBoundMemberType(const Expr *expr) {
2537 assert(expr->hasPlaceholderType(BuiltinType::BoundMember));
2538
2539 // Bound member expressions are always one of these possibilities:
2540 // x->m x.m x->*y x.*y
2541 // (possibly parenthesized)
2542
2543 expr = expr->IgnoreParens();
2544 if (const MemberExpr *mem = dyn_cast<MemberExpr>(expr)) {
2545 assert(isa<CXXMethodDecl>(mem->getMemberDecl()));
2546 return mem->getMemberDecl()->getType();
2547 }
2548
2549 if (const BinaryOperator *op = dyn_cast<BinaryOperator>(expr)) {
2550 QualType type = op->getRHS()->getType()->castAs<MemberPointerType>()
2551 ->getPointeeType();
2552 assert(type->isFunctionType());
2553 return type;
2554 }
2555
2556 assert(isa<UnresolvedMemberExpr>(expr) || isa<CXXPseudoDestructorExpr>(expr));
2557 return QualType();
2558 }
2559
2560 Expr* Expr::IgnoreParens() {
2561 Expr* E = this;
2562 while (true) {
2563 if (ParenExpr* P = dyn_cast<ParenExpr>(E)) {
2564 E = P->getSubExpr();
2565 continue;
2566 }
2567 if (UnaryOperator* P = dyn_cast<UnaryOperator>(E)) {
2568 if (P->getOpcode() == UO_Extension) {
2569 E = P->getSubExpr();
2570 continue;
2571 }
2572 }
2573 if (GenericSelectionExpr* P = dyn_cast<GenericSelectionExpr>(E)) {
2574 if (!P->isResultDependent()) {
2575 E = P->getResultExpr();
2576 continue;
2577 }
2578 }
2579 if (ChooseExpr* P = dyn_cast<ChooseExpr>(E)) {
2580 if (!P->isConditionDependent()) {
2581 E = P->getChosenSubExpr();
2582 continue;
2583 }
2584 }
2585 if (ConstantExpr *CE = dyn_cast<ConstantExpr>(E)) {
2586 E = CE->getSubExpr();
2587 continue;
2588 }
2589 return E;
2590 }
2591 }
2592
2593 /// IgnoreParenCasts - Ignore parentheses and casts. Strip off any ParenExpr
2594 /// or CastExprs or ImplicitCastExprs, returning their operand.
2595 Expr *Expr::IgnoreParenCasts() {
2596 Expr *E = this;
2597 while (true) {
2598 E = E->IgnoreParens();
2599 if (CastExpr *P = dyn_cast<CastExpr>(E)) {
2600 E = P->getSubExpr();
2601 continue;
2602 }
2603 if (MaterializeTemporaryExpr *Materialize
2604 = dyn_cast<MaterializeTemporaryExpr>(E)) {
2605 E = Materialize->GetTemporaryExpr();
2606 continue;
2607 }
2608 if (SubstNonTypeTemplateParmExpr *NTTP
2609 = dyn_cast<SubstNonTypeTemplateParmExpr>(E)) {
2610 E = NTTP->getReplacement();
2611 continue;
2612 }
2613 if (FullExpr *FE = dyn_cast<FullExpr>(E)) {
2614 E = FE->getSubExpr();
2615 continue;
2616 }
2617 return E;
2618 }
2619 }
2620
2621 Expr *Expr::IgnoreCasts() {
2622 Expr *E = this;
2623 while (true) {
2624 if (CastExpr *P = dyn_cast<CastExpr>(E)) {
2625 E = P->getSubExpr();
2626 continue;
2627 }
2628 if (MaterializeTemporaryExpr *Materialize
2629 = dyn_cast<MaterializeTemporaryExpr>(E)) {
2630 E = Materialize->GetTemporaryExpr();
2631 continue;
2632 }
2633 if (SubstNonTypeTemplateParmExpr *NTTP
2634 = dyn_cast<SubstNonTypeTemplateParmExpr>(E)) {
2635 E = NTTP->getReplacement();
2636 continue;
2637 }
2638 if (FullExpr *FE = dyn_cast<FullExpr>(E)) {
2639 E = FE->getSubExpr();
2640 continue;
2641 }
2642 return E;
2643 }
2644 }
2645
2646 /// IgnoreParenLValueCasts - Ignore parentheses and lvalue-to-rvalue
2647 /// casts. This is intended purely as a temporary workaround for code
2648 /// that hasn't yet been rewritten to do the right thing about those
2649 /// casts, and may disappear along with the last internal use.
2650 Expr *Expr::IgnoreParenLValueCasts() {
2651 Expr *E = this;
2652 while (true) {
2653 E = E->IgnoreParens();
2654 if (CastExpr *P = dyn_cast<CastExpr>(E)) {
2655 if (P->getCastKind() == CK_LValueToRValue) {
2656 E = P->getSubExpr();
2657 continue;
2658 }
2659 } else if (MaterializeTemporaryExpr *Materialize
2660 = dyn_cast<MaterializeTemporaryExpr>(E)) {
2661 E = Materialize->GetTemporaryExpr();
2662 continue;
2663 } else if (SubstNonTypeTemplateParmExpr *NTTP
2664 = dyn_cast<SubstNonTypeTemplateParmExpr>(E)) {
2665 E = NTTP->getReplacement();
2666 continue;
2667 } else if (FullExpr *FE = dyn_cast<FullExpr>(E)) {
2668 E = FE->getSubExpr();
2669 continue;
2670 }
2671 break;
2672 }
2673 return E;
2674 }
2675
2676 Expr *Expr::ignoreParenBaseCasts() {
2677 Expr *E = this;
2678 while (true) {
2679 E = E->IgnoreParens();
2680 if (CastExpr *CE = dyn_cast<CastExpr>(E)) {
2681 if (CE->getCastKind() == CK_DerivedToBase ||
2682 CE->getCastKind() == CK_UncheckedDerivedToBase ||
2683 CE->getCastKind() == CK_NoOp) {
2684 E = CE->getSubExpr();
2685 continue;
2686 }
2687 }
2688
2689 return E;
2690 }
2691 }
2692
2693 Expr *Expr::IgnoreParenImpCasts() {
2694 Expr *E = this;
2695 while (true) {
2696 E = E->IgnoreParens();
2697 if (ImplicitCastExpr *P = dyn_cast<ImplicitCastExpr>(E)) {
2698 E = P->getSubExpr();
2699 continue;
2700 }
2701 if (MaterializeTemporaryExpr *Materialize
2702 = dyn_cast<MaterializeTemporaryExpr>(E)) {
2703 E = Materialize->GetTemporaryExpr();
2704 continue;
2705 }
2706 if (SubstNonTypeTemplateParmExpr *NTTP
2707 = dyn_cast<SubstNonTypeTemplateParmExpr>(E)) {
2708 E = NTTP->getReplacement();
2709 continue;
2710 }
2711 return E;
2712 }
2713 }
2714
2715 Expr *Expr::IgnoreConversionOperator() {
2716 if (CXXMemberCallExpr *MCE = dyn_cast<CXXMemberCallExpr>(this)) {
2717 if (MCE->getMethodDecl() && isa<CXXConversionDecl>(MCE->getMethodDecl()))
2718 return MCE->getImplicitObjectArgument();
2719 }
2720 return this;
2721 }
2722
2723 /// IgnoreParenNoopCasts - Ignore parentheses and casts that do not change the
2724 /// value (including ptr->int casts of the same size). Strip off any
2725 /// ParenExpr or CastExprs, returning their operand.
2726 Expr *Expr::IgnoreParenNoopCasts(ASTContext &Ctx) {
2727 Expr *E = this;
2728 while (true) {
2729 E = E->IgnoreParens();
2730
2731 if (CastExpr *P = dyn_cast<CastExpr>(E)) {
2732 // We ignore integer <-> casts that are of the same width, ptr<->ptr and
2733 // ptr<->int casts of the same width. We also ignore all identity casts.
2734 Expr *SE = P->getSubExpr();
2735
2736 if (Ctx.hasSameUnqualifiedType(E->getType(), SE->getType())) {
2737 E = SE;
2738 continue;
2739 }
2740
2741 if ((E->getType()->isPointerType() ||
2742 E->getType()->isIntegralType(Ctx)) &&
2743 (SE->getType()->isPointerType() ||
2744 SE->getType()->isIntegralType(Ctx)) &&
2745 Ctx.getTypeSize(E->getType()) == Ctx.getTypeSize(SE->getType())) {
2746 E = SE;
2747 continue;
2748 }
2749 }
2750
2751 if (SubstNonTypeTemplateParmExpr *NTTP
2752 = dyn_cast<SubstNonTypeTemplateParmExpr>(E)) {
2753 E = NTTP->getReplacement();
2754 continue;
2755 }
2756
2757 return E;
2758 }
2759 }
2760
2761 bool Expr::isDefaultArgument() const {
2762 const Expr *E = this;
2763 if (const MaterializeTemporaryExpr *M = dyn_cast<MaterializeTemporaryExpr>(E))
2764 E = M->GetTemporaryExpr();
2765
2766 while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E))
2767 E = ICE->getSubExprAsWritten();
2768
2769 return isa<CXXDefaultArgExpr>(E);
2770 }
2771
2772 /// Skip over any no-op casts and any temporary-binding
2773 /// expressions.
2774 static const Expr *skipTemporaryBindingsNoOpCastsAndParens(const Expr *E) {
2775 if (const MaterializeTemporaryExpr *M = dyn_cast<MaterializeTemporaryExpr>(E))
2776 E = M->GetTemporaryExpr();
2777
2778 while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) {
2779 if (ICE->getCastKind() == CK_NoOp)
2780 E = ICE->getSubExpr();
2781 else
2782 break;
2783 }
2784
2785 while (const CXXBindTemporaryExpr *BE = dyn_cast<CXXBindTemporaryExpr>(E))
2786 E = BE->getSubExpr();
2787
2788 while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) {
2789 if (ICE->getCastKind() == CK_NoOp)
2790 E = ICE->getSubExpr();
2791 else
2792 break;
2793 }
2794
2795 return E->IgnoreParens();
2796 }
2797
2798 /// isTemporaryObject - Determines if this expression produces a
2799 /// temporary of the given class type.
2800 bool Expr::isTemporaryObject(ASTContext &C, const CXXRecordDecl *TempTy) const {
2801 if (!C.hasSameUnqualifiedType(getType(), C.getTypeDeclType(TempTy)))
2802 return false;
2803
2804 const Expr *E = skipTemporaryBindingsNoOpCastsAndParens(this);
2805
2806 // Temporaries are by definition pr-values of class type.
2807 if (!E->Classify(C).isPRValue()) {
2808 // In this context, property reference is a message call and is pr-value.
2809 if (!isa<ObjCPropertyRefExpr>(E))
2810 return false;
2811 }
2812
2813 // Black-list a few cases which yield pr-values of class type that don't
2814 // refer to temporaries of that type:
2815
2816 // - implicit derived-to-base conversions
2817 if (isa<ImplicitCastExpr>(E)) {
2818 switch (cast<ImplicitCastExpr>(E)->getCastKind()) {
2819 case CK_DerivedToBase:
2820 case CK_UncheckedDerivedToBase:
2821 return false;
2822 default:
2823 break;
2824 }
2825 }
2826
2827 // - member expressions (all)
2828 if (isa<MemberExpr>(E))
2829 return false;
2830
2831 if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E))
2832 if (BO->isPtrMemOp())
2833 return false;
2834
2835 // - opaque values (all)
2836 if (isa<OpaqueValueExpr>(E))
2837 return false;
2838
2839 return true;
2840 }
2841
2842 bool Expr::isImplicitCXXThis() const {
2843 const Expr *E = this;
2844
2845 // Strip away parentheses and casts we don't care about.
2846 while (true) {
2847 if (const ParenExpr *Paren = dyn_cast<ParenExpr>(E)) {
2848 E = Paren->getSubExpr();
2849 continue;
2850 }
2851
2852 if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) {
2853 if (ICE->getCastKind() == CK_NoOp ||
2854 ICE->getCastKind() == CK_LValueToRValue ||
2855 ICE->getCastKind() == CK_DerivedToBase ||
2856 ICE->getCastKind() == CK_UncheckedDerivedToBase) {
2857 E = ICE->getSubExpr();
2858 continue;
2859 }
2860 }
2861
2862 if (const UnaryOperator* UnOp = dyn_cast<UnaryOperator>(E)) {
2863 if (UnOp->getOpcode() == UO_Extension) {
2864 E = UnOp->getSubExpr();
2865 continue;
2866 }
2867 }
2868
2869 if (const MaterializeTemporaryExpr *M
2870 = dyn_cast<MaterializeTemporaryExpr>(E)) {
2871 E = M->GetTemporaryExpr();
2872 continue;
2873 }
2874
2875 break;
2876 }
2877
2878 if (const CXXThisExpr *This = dyn_cast<CXXThisExpr>(E))
2879 return This->isImplicit();
2880
2881 return false;
2882 }
2883
2884 /// hasAnyTypeDependentArguments - Determines if any of the expressions
2885 /// in Exprs is type-dependent.
2886 bool Expr::hasAnyTypeDependentArguments(ArrayRef<Expr *> Exprs) {
2887 for (unsigned I = 0; I < Exprs.size(); ++I)
2888 if (Exprs[I]->isTypeDependent())
2889 return true;
2890
2891 return false;
2892 }
2893
2894 bool Expr::isConstantInitializer(ASTContext &Ctx, bool IsForRef,
2895 const Expr **Culprit) const {
2896 // This function is attempting whether an expression is an initializer
2897 // which can be evaluated at compile-time. It very closely parallels
2898 // ConstExprEmitter in CGExprConstant.cpp; if they don't match, it
2899 // will lead to unexpected results. Like ConstExprEmitter, it falls back
2900 // to isEvaluatable most of the time.
2901 //
2902 // If we ever capture reference-binding directly in the AST, we can
2903 // kill the second parameter.
2904
2905 if (IsForRef) {
2906 EvalResult Result;
2907 if (EvaluateAsLValue(Result, Ctx) && !Result.HasSideEffects)
2908 return true;
2909 if (Culprit)
2910 *Culprit = this;
2911 return false;
2912 }
2913
2914 switch (getStmtClass()) {
2915 default: break;
2916 case StringLiteralClass:
2917 case ObjCEncodeExprClass:
2918 return true;
2919 case CXXTemporaryObjectExprClass:
2920 case CXXConstructExprClass: {
2921 const CXXConstructExpr *CE = cast<CXXConstructExpr>(this);
2922
2923 if (CE->getConstructor()->isTrivial() &&
2924 CE->getConstructor()->getParent()->hasTrivialDestructor()) {
2925 // Trivial default constructor
2926 if (!CE->getNumArgs()) return true;
2927
2928 // Trivial copy constructor
2929 assert(CE->getNumArgs() == 1 && "trivial ctor with > 1 argument");
2930 return CE->getArg(0)->isConstantInitializer(Ctx, false, Culprit);
2931 }
2932
2933 break;
2934 }
2935 case ConstantExprClass: {
2936 // FIXME: We should be able to return "true" here, but it can lead to extra
2937 // error messages. E.g. in Sema/array-init.c.
2938 const Expr *Exp = cast<ConstantExpr>(this)->getSubExpr();
2939 return Exp->isConstantInitializer(Ctx, false, Culprit);
2940 }
2941 case CompoundLiteralExprClass: {
2942 // This handles gcc's extension that allows global initializers like
2943 // "struct x {int x;} x = (struct x) {};".
2944 // FIXME: This accepts other cases it shouldn't!
2945 const Expr *Exp = cast<CompoundLiteralExpr>(this)->getInitializer();
2946 return Exp->isConstantInitializer(Ctx, false, Culprit);
2947 }
2948 case DesignatedInitUpdateExprClass: {
2949 const DesignatedInitUpdateExpr *DIUE = cast<DesignatedInitUpdateExpr>(this);
2950 return DIUE->getBase()->isConstantInitializer(Ctx, false, Culprit) &&
2951 DIUE->getUpdater()->isConstantInitializer(Ctx, false, Culprit);
2952 }
2953 case InitListExprClass: {
2954 const InitListExpr *ILE = cast<InitListExpr>(this);
2955 if (ILE->getType()->isArrayType()) {
2956 unsigned numInits = ILE->getNumInits();
2957 for (unsigned i = 0; i < numInits; i++) {
2958 if (!ILE->getInit(i)->isConstantInitializer(Ctx, false, Culprit))
2959 return false;
2960 }
2961 return true;
2962 }
2963
2964 if (ILE->getType()->isRecordType()) {
2965 unsigned ElementNo = 0;
2966 RecordDecl *RD = ILE->getType()->getAs<RecordType>()->getDecl();
2967 for (const auto *Field : RD->fields()) {
2968 // If this is a union, skip all the fields that aren't being initialized.
2969 if (RD->isUnion() && ILE->getInitializedFieldInUnion() != Field)
2970 continue;
2971
2972 // Don't emit anonymous bitfields, they just affect layout.
2973 if (Field->isUnnamedBitfield())
2974 continue;
2975
2976 if (ElementNo < ILE->getNumInits()) {
2977 const Expr *Elt = ILE->getInit(ElementNo++);
2978 if (Field->isBitField()) {
2979 // Bitfields have to evaluate to an integer.
2980 EvalResult Result;
2981 if (!Elt->EvaluateAsInt(Result, Ctx)) {
2982 if (Culprit)
2983 *Culprit = Elt;
2984 return false;
2985 }
2986 } else {
2987 bool RefType = Field->getType()->isReferenceType();
2988 if (!Elt->isConstantInitializer(Ctx, RefType, Culprit))
2989 return false;
2990 }
2991 }
2992 }
2993 return true;
2994 }
2995
2996 break;
2997 }
2998 case ImplicitValueInitExprClass:
2999 case NoInitExprClass:
3000 return true;
3001 case ParenExprClass:
3002 return cast<ParenExpr>(this)->getSubExpr()
3003 ->isConstantInitializer(Ctx, IsForRef, Culprit);
3004 case GenericSelectionExprClass:
3005 return cast<GenericSelectionExpr>(this)->getResultExpr()
3006 ->isConstantInitializer(Ctx, IsForRef, Culprit);
3007 case ChooseExprClass:
3008 if (cast<ChooseExpr>(this)->isConditionDependent()) {
3009 if (Culprit)
3010 *Culprit = this;
3011 return false;
3012 }
3013 return cast<ChooseExpr>(this)->getChosenSubExpr()
3014 ->isConstantInitializer(Ctx, IsForRef, Culprit);
3015 case UnaryOperatorClass: {
3016 const UnaryOperator* Exp = cast<UnaryOperator>(this);
3017 if (Exp->getOpcode() == UO_Extension)
3018 return Exp->getSubExpr()->isConstantInitializer(Ctx, false, Culprit);
3019 break;
3020 }
3021 case CXXFunctionalCastExprClass:
3022 case CXXStaticCastExprClass:
3023 case ImplicitCastExprClass:
3024 case CStyleCastExprClass:
3025 case ObjCBridgedCastExprClass:
3026 case CXXDynamicCastExprClass:
3027 case CXXReinterpretCastExprClass:
3028 case CXXConstCastExprClass: {
3029 const CastExpr *CE = cast<CastExpr>(this);
3030
3031 // Handle misc casts we want to ignore.
3032 if (CE->getCastKind() == CK_NoOp ||
3033 CE->getCastKind() == CK_LValueToRValue ||
3034 CE->getCastKind() == CK_ToUnion ||
3035 CE->getCastKind() == CK_ConstructorConversion ||
3036 CE->getCastKind() == CK_NonAtomicToAtomic ||
3037 CE->getCastKind() == CK_AtomicToNonAtomic ||
3038 CE->getCastKind() == CK_IntToOCLSampler)
3039 return CE->getSubExpr()->isConstantInitializer(Ctx, false, Culprit);
3040
3041 break;
3042 }
3043 case MaterializeTemporaryExprClass:
3044 return cast<MaterializeTemporaryExpr>(this)->GetTemporaryExpr()
3045 ->isConstantInitializer(Ctx, false, Culprit);
3046
3047 case SubstNonTypeTemplateParmExprClass:
3048 return cast<SubstNonTypeTemplateParmExpr>(this)->getReplacement()
3049 ->isConstantInitializer(Ctx, false, Culprit);
3050 case CXXDefaultArgExprClass:
3051 return cast<CXXDefaultArgExpr>(this)->getExpr()
3052 ->isConstantInitializer(Ctx, false, Culprit);
3053 case CXXDefaultInitExprClass:
3054 return cast<CXXDefaultInitExpr>(this)->getExpr()
3055 ->isConstantInitializer(Ctx, false, Culprit);
3056 }
3057 // Allow certain forms of UB in constant initializers: signed integer
3058 // overflow and floating-point division by zero. We'll give a warning on
3059 // these, but they're common enough that we have to accept them.
3060 if (isEvaluatable(Ctx, SE_AllowUndefinedBehavior))
3061 return true;
3062 if (Culprit)
3063 *Culprit = this;
3064 return false;
3065 }
3066
3067 bool CallExpr::isBuiltinAssumeFalse(const ASTContext &Ctx) const {
3068 const FunctionDecl* FD = getDirectCallee();
3069 if (!FD || (FD->getBuiltinID() != Builtin::BI__assume &&
3070 FD->getBuiltinID() != Builtin::BI__builtin_assume))
3071 return false;
3072
3073 const Expr* Arg = getArg(0);
3074 bool ArgVal;
3075 return !Arg->isValueDependent() &&
3076 Arg->EvaluateAsBooleanCondition(ArgVal, Ctx) && !ArgVal;
3077 }
3078
3079 namespace {
3080 /// Look for any side effects within a Stmt.
3081 class SideEffectFinder : public ConstEvaluatedExprVisitor<SideEffectFinder> {
3082 typedef ConstEvaluatedExprVisitor<SideEffectFinder> Inherited;
3083 const bool IncludePossibleEffects;
3084 bool HasSideEffects;
3085
3086 public:
3087 explicit SideEffectFinder(const ASTContext &Context, bool IncludePossible)
3088 : Inherited(Context),
3089 IncludePossibleEffects(IncludePossible), HasSideEffects(false) { }
3090
3091 bool hasSideEffects() const { return HasSideEffects; }
3092
3093 void VisitExpr(const Expr *E) {
3094 if (!HasSideEffects &&
3095 E->HasSideEffects(Context, IncludePossibleEffects))
3096 HasSideEffects = true;
3097 }
3098 };
3099 }
3100
3101 bool Expr::HasSideEffects(const ASTContext &Ctx,
3102 bool IncludePossibleEffects) const {
3103 // In circumstances where we care about definite side effects instead of
3104 // potential side effects, we want to ignore expressions that are part of a
3105 // macro expansion as a potential side effect.
3106 if (!IncludePossibleEffects && getExprLoc().isMacroID())
3107 return false;
3108
3109 if (isInstantiationDependent())
3110 return IncludePossibleEffects;
3111
3112 switch (getStmtClass()) {
3113 case NoStmtClass:
3114 #define ABSTRACT_STMT(Type)
3115 #define STMT(Type, Base) case Type##Class:
3116 #define EXPR(Type, Base)
3117 #include "clang/AST/StmtNodes.inc"
3118 llvm_unreachable("unexpected Expr kind");
3119
3120 case DependentScopeDeclRefExprClass:
3121 case CXXUnresolvedConstructExprClass:
3122 case CXXDependentScopeMemberExprClass:
3123 case UnresolvedLookupExprClass:
3124 case UnresolvedMemberExprClass:
3125 case PackExpansionExprClass:
3126 case SubstNonTypeTemplateParmPackExprClass:
3127 case FunctionParmPackExprClass:
3128 case TypoExprClass:
3129 case CXXFoldExprClass:
3130 llvm_unreachable("shouldn't see dependent / unresolved nodes here");
3131
3132 case DeclRefExprClass:
3133 case ObjCIvarRefExprClass:
3134 case PredefinedExprClass:
3135 case IntegerLiteralClass:
3136 case FixedPointLiteralClass:
3137 case FloatingLiteralClass:
3138 case ImaginaryLiteralClass:
3139 case StringLiteralClass:
3140 case CharacterLiteralClass:
3141 case OffsetOfExprClass:
3142 case ImplicitValueInitExprClass:
3143 case UnaryExprOrTypeTraitExprClass:
3144 case AddrLabelExprClass:
3145 case GNUNullExprClass:
3146 case ArrayInitIndexExprClass:
3147 case NoInitExprClass:
3148 case CXXBoolLiteralExprClass:
3149 case CXXNullPtrLiteralExprClass:
3150 case CXXThisExprClass:
3151 case CXXScalarValueInitExprClass:
3152 case TypeTraitExprClass:
3153 case ArrayTypeTraitExprClass:
3154 case ExpressionTraitExprClass:
3155 case CXXNoexceptExprClass:
3156 case SizeOfPackExprClass:
3157 case ObjCStringLiteralClass:
3158 case ObjCEncodeExprClass:
3159 case ObjCBoolLiteralExprClass:
3160 case ObjCAvailabilityCheckExprClass:
3161 case CXXUuidofExprClass:
3162 case OpaqueValueExprClass:
3163 // These never have a side-effect.
3164 return false;
3165
3166 case ConstantExprClass:
3167 // FIXME: Move this into the "return false;" block above.
3168 return cast<ConstantExpr>(this)->getSubExpr()->HasSideEffects(
3169 Ctx, IncludePossibleEffects);
3170
3171 case CallExprClass:
3172 case CXXOperatorCallExprClass:
3173 case CXXMemberCallExprClass:
3174 case CUDAKernelCallExprClass:
3175 case UserDefinedLiteralClass: {
3176 // We don't know a call definitely has side effects, except for calls
3177 // to pure/const functions that definitely don't.
3178 // If the call itself is considered side-effect free, check the operands.
3179 const Decl *FD = cast<CallExpr>(this)->getCalleeDecl();
3180 bool IsPure = FD && (FD->hasAttr<ConstAttr>() || FD->hasAttr<PureAttr>());
3181 if (IsPure || !IncludePossibleEffects)
3182 break;
3183 return true;
3184 }
3185
3186 case BlockExprClass:
3187 case CXXBindTemporaryExprClass:
3188 if (!IncludePossibleEffects)
3189 break;
3190 return true;
3191
3192 case MSPropertyRefExprClass:
3193 case MSPropertySubscriptExprClass:
3194 case CompoundAssignOperatorClass:
3195 case VAArgExprClass:
3196 case AtomicExprClass:
3197 case CXXThrowExprClass:
3198 case CXXNewExprClass:
3199 case CXXDeleteExprClass:
3200 case CoawaitExprClass:
3201 case DependentCoawaitExprClass:
3202 case CoyieldExprClass:
3203 // These always have a side-effect.
3204 return true;
3205
3206 case StmtExprClass: {
3207 // StmtExprs have a side-effect if any substatement does.
3208 SideEffectFinder Finder(Ctx, IncludePossibleEffects);
3209 Finder.Visit(cast<StmtExpr>(this)->getSubStmt());
3210 return Finder.hasSideEffects();
3211 }
3212
3213 case ExprWithCleanupsClass:
3214 if (IncludePossibleEffects)
3215 if (cast<ExprWithCleanups>(this)->cleanupsHaveSideEffects())
3216 return true;
3217 break;
3218
3219 case ParenExprClass:
3220 case ArraySubscriptExprClass:
3221 case OMPArraySectionExprClass:
3222 case MemberExprClass:
3223 case ConditionalOperatorClass:
3224 case BinaryConditionalOperatorClass:
3225 case CompoundLiteralExprClass:
3226 case ExtVectorElementExprClass:
3227 case DesignatedInitExprClass:
3228 case DesignatedInitUpdateExprClass:
3229 case ArrayInitLoopExprClass:
3230 case ParenListExprClass:
3231 case CXXPseudoDestructorExprClass:
3232 case CXXStdInitializerListExprClass:
3233 case SubstNonTypeTemplateParmExprClass:
3234 case MaterializeTemporaryExprClass:
3235 case ShuffleVectorExprClass:
3236 case ConvertVectorExprClass:
3237 case AsTypeExprClass:
3238 // These have a side-effect if any subexpression does.
3239 break;
3240
3241 case UnaryOperatorClass:
3242 if (cast<UnaryOperator>(this)->isIncrementDecrementOp())
3243 return true;
3244 break;
3245
3246 case BinaryOperatorClass:
3247 if (cast<BinaryOperator>(this)->isAssignmentOp())
3248 return true;
3249 break;
3250
3251 case InitListExprClass:
3252 // FIXME: The children for an InitListExpr doesn't include the array filler.
3253 if (const Expr *E = cast<InitListExpr>(this)->getArrayFiller())
3254 if (E->HasSideEffects(Ctx, IncludePossibleEffects))
3255 return true;
3256 break;
3257
3258 case GenericSelectionExprClass:
3259 return cast<GenericSelectionExpr>(this)->getResultExpr()->
3260 HasSideEffects(Ctx, IncludePossibleEffects);
3261
3262 case ChooseExprClass:
3263 return cast<ChooseExpr>(this)->getChosenSubExpr()->HasSideEffects(
3264 Ctx, IncludePossibleEffects);
3265
3266 case CXXDefaultArgExprClass:
3267 return cast<CXXDefaultArgExpr>(this)->getExpr()->HasSideEffects(
3268 Ctx, IncludePossibleEffects);
3269
3270 case CXXDefaultInitExprClass: {
3271 const FieldDecl *FD = cast<CXXDefaultInitExpr>(this)->getField();
3272 if (const Expr *E = FD->getInClassInitializer())
3273 return E->HasSideEffects(Ctx, IncludePossibleEffects);
3274 // If we've not yet parsed the initializer, assume it has side-effects.
3275 return true;
3276 }
3277
3278 case CXXDynamicCastExprClass: {
3279 // A dynamic_cast expression has side-effects if it can throw.
3280 const CXXDynamicCastExpr *DCE = cast<CXXDynamicCastExpr>(this);
3281 if (DCE->getTypeAsWritten()->isReferenceType() &&
3282 DCE->getCastKind() == CK_Dynamic)
3283 return true;
3284 }
3285 LLVM_FALLTHROUGH;
3286 case ImplicitCastExprClass:
3287 case CStyleCastExprClass:
3288 case CXXStaticCastExprClass:
3289 case CXXReinterpretCastExprClass:
3290 case CXXConstCastExprClass:
3291 case CXXFunctionalCastExprClass: {
3292 // While volatile reads are side-effecting in both C and C++, we treat them
3293 // as having possible (not definite) side-effects. This allows idiomatic
3294 // code to behave without warning, such as sizeof(*v) for a volatile-
3295 // qualified pointer.
3296 if (!IncludePossibleEffects)
3297 break;
3298
3299 const CastExpr *CE = cast<CastExpr>(this);
3300 if (CE->getCastKind() == CK_LValueToRValue &&
3301 CE->getSubExpr()->getType().isVolatileQualified())
3302 return true;
3303 break;
3304 }
3305
3306 case CXXTypeidExprClass:
3307 // typeid might throw if its subexpression is potentially-evaluated, so has
3308 // side-effects in that case whether or not its subexpression does.
3309 return cast<CXXTypeidExpr>(this)->isPotentiallyEvaluated();
3310
3311 case CXXConstructExprClass:
3312 case CXXTemporaryObjectExprClass: {
3313 const CXXConstructExpr *CE = cast<CXXConstructExpr>(this);
3314 if (!CE->getConstructor()->isTrivial() && IncludePossibleEffects)
3315 return true;
3316 // A trivial constructor does not add any side-effects of its own. Just look
3317 // at its arguments.
3318 break;
3319 }
3320
3321 case CXXInheritedCtorInitExprClass: {
3322 const auto *ICIE = cast<CXXInheritedCtorInitExpr>(this);
3323 if (!ICIE->getConstructor()->isTrivial() && IncludePossibleEffects)
3324 return true;
3325 break;
3326 }
3327
3328 case LambdaExprClass: {
3329 const LambdaExpr *LE = cast<LambdaExpr>(this);
3330 for (Expr *E : LE->capture_inits())
3331 if (E->HasSideEffects(Ctx, IncludePossibleEffects))
3332 return true;
3333 return false;
3334 }
3335
3336 case PseudoObjectExprClass: {
3337 // Only look for side-effects in the semantic form, and look past
3338 // OpaqueValueExpr bindings in that form.
3339 const PseudoObjectExpr *PO = cast<PseudoObjectExpr>(this);
3340 for (PseudoObjectExpr::const_semantics_iterator I = PO->semantics_begin(),
3341 E = PO->semantics_end();
3342 I != E; ++I) {
3343 const Expr *Subexpr = *I;
3344 if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(Subexpr))
3345 Subexpr = OVE->getSourceExpr();
3346 if (Subexpr->HasSideEffects(Ctx, IncludePossibleEffects))
3347 return true;
3348 }
3349 return false;
3350 }
3351
3352 case ObjCBoxedExprClass:
3353 case ObjCArrayLiteralClass:
3354 case ObjCDictionaryLiteralClass:
3355 case ObjCSelectorExprClass:
3356 case ObjCProtocolExprClass:
3357 case ObjCIsaExprClass:
3358 case ObjCIndirectCopyRestoreExprClass:
3359 case ObjCSubscriptRefExprClass:
3360 case ObjCBridgedCastExprClass:
3361 case ObjCMessageExprClass:
3362 case ObjCPropertyRefExprClass:
3363 // FIXME: Classify these cases better.
3364 if (IncludePossibleEffects)
3365 return true;
3366 break;
3367 }
3368
3369 // Recurse to children.
3370 for (const Stmt *SubStmt : children())
3371 if (SubStmt &&
3372 cast<Expr>(SubStmt)->HasSideEffects(Ctx, IncludePossibleEffects))
3373 return true;
3374
3375 return false;
3376 }
3377
3378 namespace {
3379 /// Look for a call to a non-trivial function within an expression.
3380 class NonTrivialCallFinder : public ConstEvaluatedExprVisitor<NonTrivialCallFinder>
3381 {
3382 typedef ConstEvaluatedExprVisitor<NonTrivialCallFinder> Inherited;
3383
3384 bool NonTrivial;
3385
3386 public:
3387 explicit NonTrivialCallFinder(const ASTContext &Context)
3388 : Inherited(Context), NonTrivial(false) { }
3389
3390 bool hasNonTrivialCall() const { return NonTrivial; }
3391
3392 void VisitCallExpr(const CallExpr *E) {
3393 if (const CXXMethodDecl *Method
3394 = dyn_cast_or_null<const CXXMethodDecl>(E->getCalleeDecl())) {
3395 if (Method->isTrivial()) {
3396 // Recurse to children of the call.
3397 Inherited::VisitStmt(E);
3398 return;
3399 }
3400 }
3401
3402 NonTrivial = true;
3403 }
3404
3405 void VisitCXXConstructExpr(const CXXConstructExpr *E) {
3406 if (E->getConstructor()->isTrivial()) {
3407 // Recurse to children of the call.
3408 Inherited::VisitStmt(E);
3409 return;
3410 }
3411
3412 NonTrivial = true;
3413 }
3414
3415 void VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *E) {
3416 if (E->getTemporary()->getDestructor()->isTrivial()) {
3417 Inherited::VisitStmt(E);
3418 return;
3419 }
3420
3421 NonTrivial = true;
3422 }
3423 };
3424 }
3425
3426 bool Expr::hasNonTrivialCall(const ASTContext &Ctx) const {
3427 NonTrivialCallFinder Finder(Ctx);
3428 Finder.Visit(this);
3429 return Finder.hasNonTrivialCall();
3430 }
3431
3432 /// isNullPointerConstant - C99 6.3.2.3p3 - Return whether this is a null
3433 /// pointer constant or not, as well as the specific kind of constant detected.
3434 /// Null pointer constants can be integer constant expressions with the
3435 /// value zero, casts of zero to void*, nullptr (C++0X), or __null
3436 /// (a GNU extension).
3437 Expr::NullPointerConstantKind
3438 Expr::isNullPointerConstant(ASTContext &Ctx,
3439 NullPointerConstantValueDependence NPC) const {
3440 if (isValueDependent() &&
3441 (!Ctx.getLangOpts().CPlusPlus11 || Ctx.getLangOpts().MSVCCompat)) {
3442 switch (NPC) {
3443 case NPC_NeverValueDependent:
3444 llvm_unreachable("Unexpected value dependent expression!");
3445 case NPC_ValueDependentIsNull:
3446 if (isTypeDependent() || getType()->isIntegralType(Ctx))
3447 return NPCK_ZeroExpression;
3448 else
3449 return NPCK_NotNull;
3450
3451 case NPC_ValueDependentIsNotNull:
3452 return NPCK_NotNull;
3453 }
3454 }
3455
3456 // Strip off a cast to void*, if it exists. Except in C++.
3457 if (const ExplicitCastExpr *CE = dyn_cast<ExplicitCastExpr>(this)) {
3458 if (!Ctx.getLangOpts().CPlusPlus) {
3459 // Check that it is a cast to void*.
3460 if (const PointerType *PT = CE->getType()->getAs<PointerType>()) {
3461 QualType Pointee = PT->getPointeeType();
3462 Qualifiers Qs = Pointee.getQualifiers();
3463 // Only (void*)0 or equivalent are treated as nullptr. If pointee type
3464 // has non-default address space it is not treated as nullptr.
3465 // (__generic void*)0 in OpenCL 2.0 should not be treated as nullptr
3466 // since it cannot be assigned to a pointer to constant address space.
3467 if ((Ctx.getLangOpts().OpenCLVersion >= 200 &&
3468 Pointee.getAddressSpace() == LangAS::opencl_generic) ||
3469 (Ctx.getLangOpts().OpenCL &&
3470 Ctx.getLangOpts().OpenCLVersion < 200 &&
3471 Pointee.getAddressSpace() == LangAS::opencl_private))
3472 Qs.removeAddressSpace();
3473
3474 if (Pointee->isVoidType() && Qs.empty() && // to void*
3475 CE->getSubExpr()->getType()->isIntegerType()) // from int
3476 return CE->getSubExpr()->isNullPointerConstant(Ctx, NPC);
3477 }
3478 }
3479 } else if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(this)) {
3480 // Ignore the ImplicitCastExpr type entirely.
3481 return ICE->getSubExpr()->isNullPointerConstant(Ctx, NPC);
3482 } else if (const ParenExpr *PE = dyn_cast<ParenExpr>(this)) {
3483 // Accept ((void*)0) as a null pointer constant, as many other
3484 // implementations do.
3485 return PE->getSubExpr()->isNullPointerConstant(Ctx, NPC);
3486 } else if (const GenericSelectionExpr *GE =
3487 dyn_cast<GenericSelectionExpr>(this)) {
3488 if (GE->isResultDependent())
3489 return NPCK_NotNull;
3490 return GE->getResultExpr()->isNullPointerConstant(Ctx, NPC);
3491 } else if (const ChooseExpr *CE = dyn_cast<ChooseExpr>(this)) {
3492 if (CE->isConditionDependent())
3493 return NPCK_NotNull;
3494 return CE->getChosenSubExpr()->isNullPointerConstant(Ctx, NPC);
3495 } else if (const CXXDefaultArgExpr *DefaultArg
3496 = dyn_cast<CXXDefaultArgExpr>(this)) {
3497 // See through default argument expressions.
3498 return DefaultArg->getExpr()->isNullPointerConstant(Ctx, NPC);
3499 } else if (const CXXDefaultInitExpr *DefaultInit
3500 = dyn_cast<CXXDefaultInitExpr>(this)) {
3501 // See through default initializer expressions.
3502 return DefaultInit->getExpr()->isNullPointerConstant(Ctx, NPC);
3503 } else if (isa<GNUNullExpr>(this)) {
3504 // The GNU __null extension is always a null pointer constant.
3505 return NPCK_GNUNull;
3506 } else if (const MaterializeTemporaryExpr *M
3507 = dyn_cast<MaterializeTemporaryExpr>(this)) {
3508 return M->GetTemporaryExpr()->isNullPointerConstant(Ctx, NPC);
3509 } else if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(this)) {
3510 if (const Expr *Source = OVE->getSourceExpr())
3511 return Source->isNullPointerConstant(Ctx, NPC);
3512 }
3513
3514 // C++11 nullptr_t is always a null pointer constant.
3515 if (getType()->isNullPtrType())
3516 return NPCK_CXX11_nullptr;
3517
3518 if (const RecordType *UT = getType()->getAsUnionType())
3519 if (!Ctx.getLangOpts().CPlusPlus11 &&
3520 UT && UT->getDecl()->hasAttr<TransparentUnionAttr>())
3521 if (const CompoundLiteralExpr *CLE = dyn_cast<CompoundLiteralExpr>(this)){
3522 const Expr *InitExpr = CLE->getInitializer();
3523 if (const InitListExpr *ILE = dyn_cast<InitListExpr>(InitExpr))
3524 return ILE->getInit(0)->isNullPointerConstant(Ctx, NPC);
3525 }
3526 // This expression must be an integer type.
3527 if (!getType()->isIntegerType() ||
3528 (Ctx.getLangOpts().CPlusPlus && getType()->isEnumeralType()))
3529 return NPCK_NotNull;
3530
3531 if (Ctx.getLangOpts().CPlusPlus11) {
3532 // C++11 [conv.ptr]p1: A null pointer constant is an integer literal with
3533 // value zero or a prvalue of type std::nullptr_t.
3534 // Microsoft mode permits C++98 rules reflecting MSVC behavior.
3535 const IntegerLiteral *Lit = dyn_cast<IntegerLiteral>(this);
3536 if (Lit && !Lit->getValue())
3537 return NPCK_ZeroLiteral;
3538 else if (!Ctx.getLangOpts().MSVCCompat || !isCXX98IntegralConstantExpr(Ctx))
3539 return NPCK_NotNull;
3540 } else {
3541 // If we have an integer constant expression, we need to *evaluate* it and
3542 // test for the value 0.
3543 if (!isIntegerConstantExpr(Ctx))
3544 return NPCK_NotNull;
3545 }
3546
3547 if (EvaluateKnownConstInt(Ctx) != 0)
3548 return NPCK_NotNull;
3549
3550 if (isa<IntegerLiteral>(this))
3551 return NPCK_ZeroLiteral;
3552 return NPCK_ZeroExpression;
3553 }
3554
3555 /// If this expression is an l-value for an Objective C
3556 /// property, find the underlying property reference expression.
3557 const ObjCPropertyRefExpr *Expr::getObjCProperty() const {
3558 const Expr *E = this;
3559 while (true) {
3560 assert((E->getValueKind() == VK_LValue &&
3561 E->getObjectKind() == OK_ObjCProperty) &&
3562 "expression is not a property reference");
3563 E = E->IgnoreParenCasts();
3564 if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) {
3565 if (BO->getOpcode() == BO_Comma) {
3566 E = BO->getRHS();
3567 continue;
3568 }
3569 }
3570
3571 break;
3572 }
3573
3574 return cast<ObjCPropertyRefExpr>(E);
3575 }
3576
3577 bool Expr::isObjCSelfExpr() const {
3578 const Expr *E = IgnoreParenImpCasts();
3579
3580 const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E);
3581 if (!DRE)
3582 return false;
3583
3584 const ImplicitParamDecl *Param = dyn_cast<ImplicitParamDecl>(DRE->getDecl());
3585 if (!Param)
3586 return false;
3587
3588 const ObjCMethodDecl *M = dyn_cast<ObjCMethodDecl>(Param->getDeclContext());
3589 if (!M)
3590 return false;
3591
3592 return M->getSelfDecl() == Param;
3593 }
3594
3595 FieldDecl *Expr::getSourceBitField() {
3596 Expr *E = this->IgnoreParens();
3597
3598 while (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) {
3599 if (ICE->getCastKind() == CK_LValueToRValue ||
3600 (ICE->getValueKind() != VK_RValue && ICE->getCastKind() == CK_NoOp))
3601 E = ICE->getSubExpr()->IgnoreParens();
3602 else
3603 break;
3604 }
3605
3606 if (MemberExpr *MemRef = dyn_cast<MemberExpr>(E))
3607 if (FieldDecl *Field = dyn_cast<FieldDecl>(MemRef->getMemberDecl()))
3608 if (Field->isBitField())
3609 return Field;
3610
3611 if (ObjCIvarRefExpr *IvarRef = dyn_cast<ObjCIvarRefExpr>(E)) {
3612 FieldDecl *Ivar = IvarRef->getDecl();
3613 if (Ivar->isBitField())
3614 return Ivar;
3615 }
3616
3617 if (DeclRefExpr *DeclRef = dyn_cast<DeclRefExpr>(E)) {
3618 if (FieldDecl *Field = dyn_cast<FieldDecl>(DeclRef->getDecl()))
3619 if (Field->isBitField())
3620 return Field;
3621
3622 if (BindingDecl *BD = dyn_cast<BindingDecl>(DeclRef->getDecl()))
3623 if (Expr *E = BD->getBinding())
3624 return E->getSourceBitField();
3625 }
3626
3627 if (BinaryOperator *BinOp = dyn_cast<BinaryOperator>(E)) {
3628 if (BinOp->isAssignmentOp() && BinOp->getLHS())
3629 return BinOp->getLHS()->getSourceBitField();
3630
3631 if (BinOp->getOpcode() == BO_Comma && BinOp->getRHS())
3632 return BinOp->getRHS()->getSourceBitField();
3633 }
3634
3635 if (UnaryOperator *UnOp = dyn_cast<UnaryOperator>(E))
3636 if (UnOp->isPrefix() && UnOp->isIncrementDecrementOp())
3637 return UnOp->getSubExpr()->getSourceBitField();
3638
3639 return nullptr;
3640 }
3641
3642 bool Expr::refersToVectorElement() const {
3643 // FIXME: Why do we not just look at the ObjectKind here?
3644 const Expr *E = this->IgnoreParens();
3645
3646 while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) {
3647 if (ICE->getValueKind() != VK_RValue &&
3648 ICE->getCastKind() == CK_NoOp)
3649 E = ICE->getSubExpr()->IgnoreParens();
3650 else
3651 break;
3652 }
3653
3654 if (const ArraySubscriptExpr *ASE = dyn_cast<ArraySubscriptExpr>(E))
3655 return ASE->getBase()->getType()->isVectorType();
3656
3657 if (isa<ExtVectorElementExpr>(E))
3658 return true;
3659
3660 if (auto *DRE = dyn_cast<DeclRefExpr>(E))
3661 if (auto *BD = dyn_cast<BindingDecl>(DRE->getDecl()))
3662 if (auto *E = BD->getBinding())
3663 return E->refersToVectorElement();
3664
3665 return false;
3666 }
3667
3668 bool Expr::refersToGlobalRegisterVar() const {
3669 const Expr *E = this->IgnoreParenImpCasts();
3670
3671 if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E))
3672 if (const auto *VD = dyn_cast<VarDecl>(DRE->getDecl()))
3673 if (VD->getStorageClass() == SC_Register &&
3674 VD->hasAttr<AsmLabelAttr>() && !VD->isLocalVarDecl())
3675 return true;
3676
3677 return false;
3678 }
3679
3680 /// isArrow - Return true if the base expression is a pointer to vector,
3681 /// return false if the base expression is a vector.
3682 bool ExtVectorElementExpr::isArrow() const {
3683 return getBase()->getType()->isPointerType();
3684 }
3685
3686 unsigned ExtVectorElementExpr::getNumElements() const {
3687 if (const VectorType *VT = getType()->getAs<VectorType>())
3688 return VT->getNumElements();
3689 return 1;
3690 }
3691
3692 /// containsDuplicateElements - Return true if any element access is repeated.
3693 bool ExtVectorElementExpr::containsDuplicateElements() const {
3694 // FIXME: Refactor this code to an accessor on the AST node which returns the
3695 // "type" of component access, and share with code below and in Sema.
3696 StringRef Comp = Accessor->getName();
3697
3698 // Halving swizzles do not contain duplicate elements.
3699 if (Comp == "hi" || Comp == "lo" || Comp == "even" || Comp == "odd")
3700 return false;
3701
3702 // Advance past s-char prefix on hex swizzles.
3703 if (Comp[0] == 's' || Comp[0] == 'S')
3704 Comp = Comp.substr(1);
3705
3706 for (unsigned i = 0, e = Comp.size(); i != e; ++i)
3707 if (Comp.substr(i + 1).find(Comp[i]) != StringRef::npos)
3708 return true;
3709
3710 return false;
3711 }
3712
3713 /// getEncodedElementAccess - We encode the fields as a llvm ConstantArray.
3714 void ExtVectorElementExpr::getEncodedElementAccess(
3715 SmallVectorImpl<uint32_t> &Elts) const {
3716 StringRef Comp = Accessor->getName();
3717 bool isNumericAccessor = false;
3718 if (Comp[0] == 's' || Comp[0] == 'S') {
3719 Comp = Comp.substr(1);
3720 isNumericAccessor = true;
3721 }
3722
3723 bool isHi = Comp == "hi";
3724 bool isLo = Comp == "lo";
3725 bool isEven = Comp == "even";
3726 bool isOdd = Comp == "odd";
3727
3728 for (unsigned i = 0, e = getNumElements(); i != e; ++i) {
3729 uint64_t Index;
3730
3731 if (isHi)
3732 Index = e + i;
3733 else if (isLo)
3734 Index = i;
3735 else if (isEven)
3736 Index = 2 * i;
3737 else if (isOdd)
3738 Index = 2 * i + 1;
3739 else
3740 Index = ExtVectorType::getAccessorIdx(Comp[i], isNumericAccessor);
3741
3742 Elts.push_back(Index);
3743 }
3744 }
3745
3746 ShuffleVectorExpr::ShuffleVectorExpr(const ASTContext &C, ArrayRef<Expr*> args,
3747 QualType Type, SourceLocation BLoc,
3748 SourceLocation RP)
3749 : Expr(ShuffleVectorExprClass, Type, VK_RValue, OK_Ordinary,
3750 Type->isDependentType(), Type->isDependentType(),
3751 Type->isInstantiationDependentType(),
3752 Type->containsUnexpandedParameterPack()),
3753 BuiltinLoc(BLoc), RParenLoc(RP), NumExprs(args.size())
3754 {
3755 SubExprs = new (C) Stmt*[args.size()];
3756 for (unsigned i = 0; i != args.size(); i++) {
3757 if (args[i]->isTypeDependent())
3758 ExprBits.TypeDependent = true;
3759 if (args[i]->isValueDependent())
3760 ExprBits.ValueDependent = true;
3761 if (args[i]->isInstantiationDependent())
3762 ExprBits.InstantiationDependent = true;
3763 if (args[i]->containsUnexpandedParameterPack())
3764 ExprBits.ContainsUnexpandedParameterPack = true;
3765
3766 SubExprs[i] = args[i];
3767 }
3768 }
3769
3770 void ShuffleVectorExpr::setExprs(const ASTContext &C, ArrayRef<Expr *> Exprs) {
3771 if (SubExprs) C.Deallocate(SubExprs);
3772
3773 this->NumExprs = Exprs.size();
3774 SubExprs = new (C) Stmt*[NumExprs];
3775 memcpy(SubExprs, Exprs.data(), sizeof(Expr *) * Exprs.size());
3776 }
3777
3778 GenericSelectionExpr::GenericSelectionExpr(const ASTContext &Context,
3779 SourceLocation GenericLoc, Expr *ControllingExpr,
3780 ArrayRef<TypeSourceInfo*> AssocTypes,
3781 ArrayRef<Expr*> AssocExprs,
3782 SourceLocation DefaultLoc,
3783 SourceLocation RParenLoc,
3784 bool ContainsUnexpandedParameterPack,
3785 unsigned ResultIndex)
3786 : Expr(GenericSelectionExprClass,
3787 AssocExprs[ResultIndex]->getType(),
3788 AssocExprs[ResultIndex]->getValueKind(),
3789 AssocExprs[ResultIndex]->getObjectKind(),
3790 AssocExprs[ResultIndex]->isTypeDependent(),
3791 AssocExprs[ResultIndex]->isValueDependent(),
3792 AssocExprs[ResultIndex]->isInstantiationDependent(),
3793 ContainsUnexpandedParameterPack),
3794 AssocTypes(new (Context) TypeSourceInfo*[AssocTypes.size()]),
3795 SubExprs(new (Context) Stmt*[END_EXPR+AssocExprs.size()]),
3796 NumAssocs(AssocExprs.size()), ResultIndex(ResultIndex),
3797 GenericLoc(GenericLoc), DefaultLoc(DefaultLoc), RParenLoc(RParenLoc) {
3798 SubExprs[CONTROLLING] = ControllingExpr;
3799 assert(AssocTypes.size() == AssocExprs.size());
3800 std::copy(AssocTypes.begin(), AssocTypes.end(), this->AssocTypes);
3801 std::copy(AssocExprs.begin(), AssocExprs.end(), SubExprs+END_EXPR);
3802 }
3803
3804 GenericSelectionExpr::GenericSelectionExpr(const ASTContext &Context,
3805 SourceLocation GenericLoc, Expr *ControllingExpr,
3806 ArrayRef<TypeSourceInfo*> AssocTypes,
3807 ArrayRef<Expr*> AssocExprs,
3808 SourceLocation DefaultLoc,
3809 SourceLocation RParenLoc,
3810 bool ContainsUnexpandedParameterPack)
3811 : Expr(GenericSelectionExprClass,
3812 Context.DependentTy,
3813 VK_RValue,
3814 OK_Ordinary,
3815 /*isTypeDependent=*/true,
3816 /*isValueDependent=*/true,
3817 /*isInstantiationDependent=*/true,
3818 ContainsUnexpandedParameterPack),
3819 AssocTypes(new (Context) TypeSourceInfo*[AssocTypes.size()]),
3820 SubExprs(new (Context) Stmt*[END_EXPR+AssocExprs.size()]),
3821 NumAssocs(AssocExprs.size()), ResultIndex(-1U), GenericLoc(GenericLoc),
3822 DefaultLoc(DefaultLoc), RParenLoc(RParenLoc) {
3823 SubExprs[CONTROLLING] = ControllingExpr;
3824 assert(AssocTypes.size() == AssocExprs.size());
3825 std::copy(AssocTypes.begin(), AssocTypes.end(), this->AssocTypes);
3826 std::copy(AssocExprs.begin(), AssocExprs.end(), SubExprs+END_EXPR);
3827 }
3828
3829 //===----------------------------------------------------------------------===//
3830 // DesignatedInitExpr
3831 //===----------------------------------------------------------------------===//
3832
3833 IdentifierInfo *DesignatedInitExpr::Designator::getFieldName() const {
3834 assert(Kind == FieldDesignator && "Only valid on a field designator");
3835 if (Field.NameOrField & 0x01)
3836 return reinterpret_cast<IdentifierInfo *>(Field.NameOrField&~0x01);
3837 else
3838 return getField()->getIdentifier();
3839 }
3840
3841 DesignatedInitExpr::DesignatedInitExpr(const ASTContext &C, QualType Ty,
3842 llvm::ArrayRef<Designator> Designators,
3843 SourceLocation EqualOrColonLoc,
3844 bool GNUSyntax,
3845 ArrayRef<Expr*> IndexExprs,
3846 Expr *Init)
3847 : Expr(DesignatedInitExprClass, Ty,
3848 Init->getValueKind(), Init->getObjectKind(),
3849 Init->isTypeDependent(), Init->isValueDependent(),
3850 Init->isInstantiationDependent(),
3851 Init->containsUnexpandedParameterPack()),
3852 EqualOrColonLoc(EqualOrColonLoc), GNUSyntax(GNUSyntax),
3853 NumDesignators(Designators.size()), NumSubExprs(IndexExprs.size() + 1) {
3854 this->Designators = new (C) Designator[NumDesignators];
3855
3856 // Record the initializer itself.
3857 child_iterator Child = child_begin();
3858 *Child++ = Init;
3859
3860 // Copy the designators and their subexpressions, computing
3861 // value-dependence along the way.
3862 unsigned IndexIdx = 0;
3863 for (unsigned I = 0; I != NumDesignators; ++I) {
3864 this->Designators[I] = Designators[I];
3865
3866 if (this->Designators[I].isArrayDesignator()) {
3867 // Compute type- and value-dependence.
3868 Expr *Index = IndexExprs[IndexIdx];
3869 if (Index->isTypeDependent() || Index->isValueDependent())
3870 ExprBits.TypeDependent = ExprBits.ValueDependent = true;
3871 if (Index->isInstantiationDependent())
3872 ExprBits.InstantiationDependent = true;
3873 // Propagate unexpanded parameter packs.
3874 if (Index->containsUnexpandedParameterPack())
3875 ExprBits.ContainsUnexpandedParameterPack = true;
3876
3877 // Copy the index expressions into permanent storage.
3878 *Child++ = IndexExprs[IndexIdx++];
3879 } else if (this->Designators[I].isArrayRangeDesignator()) {
3880 // Compute type- and value-dependence.
3881 Expr *Start = IndexExprs[IndexIdx];
3882 Expr *End = IndexExprs[IndexIdx + 1];
3883 if (Start->isTypeDependent() || Start->isValueDependent() ||
3884 End->isTypeDependent() || End->isValueDependent()) {
3885 ExprBits.TypeDependent = ExprBits.ValueDependent = true;
3886 ExprBits.InstantiationDependent = true;
3887 } else if (Start->isInstantiationDependent() ||
3888 End->isInstantiationDependent()) {
3889 ExprBits.InstantiationDependent = true;
3890 }
3891
3892 // Propagate unexpanded parameter packs.
3893 if (Start->containsUnexpandedParameterPack() ||
3894 End->containsUnexpandedParameterPack())
3895 ExprBits.ContainsUnexpandedParameterPack = true;
3896
3897 // Copy the start/end expressions into permanent storage.
3898 *Child++ = IndexExprs[IndexIdx++];
3899 *Child++ = IndexExprs[IndexIdx++];
3900 }
3901 }
3902
3903 assert(IndexIdx == IndexExprs.size() && "Wrong number of index expressions");
3904 }
3905
3906 DesignatedInitExpr *
3907 DesignatedInitExpr::Create(const ASTContext &C,
3908 llvm::ArrayRef<Designator> Designators,
3909 ArrayRef<Expr*> IndexExprs,
3910 SourceLocation ColonOrEqualLoc,
3911 bool UsesColonSyntax, Expr *Init) {
3912 void *Mem = C.Allocate(totalSizeToAlloc<Stmt *>(IndexExprs.size() + 1),
3913 alignof(DesignatedInitExpr));
3914 return new (Mem) DesignatedInitExpr(C, C.VoidTy, Designators,
3915 ColonOrEqualLoc, UsesColonSyntax,
3916 IndexExprs, Init);
3917 }
3918
3919 DesignatedInitExpr *DesignatedInitExpr::CreateEmpty(const ASTContext &C,
3920 unsigned NumIndexExprs) {
3921 void *Mem = C.Allocate(totalSizeToAlloc<Stmt *>(NumIndexExprs + 1),
3922 alignof(DesignatedInitExpr));
3923 return new (Mem) DesignatedInitExpr(NumIndexExprs + 1);
3924 }
3925
3926 void DesignatedInitExpr::setDesignators(const ASTContext &C,
3927 const Designator *Desigs,
3928 unsigned NumDesigs) {
3929 Designators = new (C) Designator[NumDesigs];
3930 NumDesignators = NumDesigs;
3931 for (unsigned I = 0; I != NumDesigs; ++I)
3932 Designators[I] = Desigs[I];
3933 }
3934
3935 SourceRange DesignatedInitExpr::getDesignatorsSourceRange() const {
3936 DesignatedInitExpr *DIE = const_cast<DesignatedInitExpr*>(this);
3937 if (size() == 1)
3938 return DIE->getDesignator(0)->getSourceRange();
3939 return SourceRange(DIE->getDesignator(0)->getBeginLoc(),
3940 DIE->getDesignator(size() - 1)->getEndLoc());
3941 }
3942
3943 SourceLocation DesignatedInitExpr::getBeginLoc() const {
3944 SourceLocation StartLoc;
3945 auto *DIE = const_cast<DesignatedInitExpr *>(this);
3946 Designator &First = *DIE->getDesignator(0);
3947 if (First.isFieldDesignator()) {
3948 if (GNUSyntax)
3949 StartLoc = SourceLocation::getFromRawEncoding(First.Field.FieldLoc);
3950 else
3951 StartLoc = SourceLocation::getFromRawEncoding(First.Field.DotLoc);
3952 } else
3953 StartLoc =
3954 SourceLocation::getFromRawEncoding(First.ArrayOrRange.LBracketLoc);
3955 return StartLoc;
3956 }
3957
3958 SourceLocation DesignatedInitExpr::getEndLoc() const {
3959 return getInit()->getEndLoc();
3960 }
3961
3962 Expr *DesignatedInitExpr::getArrayIndex(const Designator& D) const {
3963 assert(D.Kind == Designator::ArrayDesignator && "Requires array designator");
3964 return getSubExpr(D.ArrayOrRange.Index + 1);
3965 }
3966
3967 Expr *DesignatedInitExpr::getArrayRangeStart(const Designator &D) const {
3968 assert(D.Kind == Designator::ArrayRangeDesignator &&
3969 "Requires array range designator");
3970 return getSubExpr(D.ArrayOrRange.Index + 1);
3971 }
3972
3973 Expr *DesignatedInitExpr::getArrayRangeEnd(const Designator &D) const {
3974 assert(D.Kind == Designator::ArrayRangeDesignator &&
3975 "Requires array range designator");
3976 return getSubExpr(D.ArrayOrRange.Index + 2);
3977 }
3978
3979 /// Replaces the designator at index @p Idx with the series
3980 /// of designators in [First, Last).
3981 void DesignatedInitExpr::ExpandDesignator(const ASTContext &C, unsigned Idx,
3982 const Designator *First,
3983 const Designator *Last) {
3984 unsigned NumNewDesignators = Last - First;
3985 if (NumNewDesignators == 0) {
3986 std::copy_backward(Designators + Idx + 1,
3987 Designators + NumDesignators,
3988 Designators + Idx);
3989 --NumNewDesignators;
3990 return;
3991 } else if (NumNewDesignators == 1) {
3992 Designators[Idx] = *First;
3993 return;
3994 }
3995
3996 Designator *NewDesignators
3997 = new (C) Designator[NumDesignators - 1 + NumNewDesignators];
3998 std::copy(Designators, Designators + Idx, NewDesignators);
3999 std::copy(First, Last, NewDesignators + Idx);
4000 std::copy(Designators + Idx + 1, Designators + NumDesignators,
4001 NewDesignators + Idx + NumNewDesignators);
4002 Designators = NewDesignators;
4003 NumDesignators = NumDesignators - 1 + NumNewDesignators;
4004 }
4005
4006 DesignatedInitUpdateExpr::DesignatedInitUpdateExpr(const ASTContext &C,
4007 SourceLocation lBraceLoc, Expr *baseExpr, SourceLocation rBraceLoc)
4008 : Expr(DesignatedInitUpdateExprClass, baseExpr->getType(), VK_RValue,
4009 OK_Ordinary, false, false, false, false) {
4010 BaseAndUpdaterExprs[0] = baseExpr;
4011
4012 InitListExpr *ILE = new (C) InitListExpr(C, lBraceLoc, None, rBraceLoc);
4013 ILE->setType(baseExpr->getType());
4014 BaseAndUpdaterExprs[1] = ILE;
4015 }
4016
4017 SourceLocation DesignatedInitUpdateExpr::getBeginLoc() const {
4018 return getBase()->getBeginLoc();
4019 }
4020
4021 SourceLocation DesignatedInitUpdateExpr::getEndLoc() const {
4022 return getBase()->getEndLoc();
4023 }
4024
4025 ParenListExpr::ParenListExpr(SourceLocation LParenLoc, ArrayRef<Expr *> Exprs,
4026 SourceLocation RParenLoc)
4027 : Expr(ParenListExprClass, QualType(), VK_RValue, OK_Ordinary, false, false,
4028 false, false),
4029 LParenLoc(LParenLoc), RParenLoc(RParenLoc) {
4030 ParenListExprBits.NumExprs = Exprs.size();
4031
4032 for (unsigned I = 0, N = Exprs.size(); I != N; ++I) {
4033 if (Exprs[I]->isTypeDependent())
4034 ExprBits.TypeDependent = true;
4035 if (Exprs[I]->isValueDependent())
4036 ExprBits.ValueDependent = true;
4037 if (Exprs[I]->isInstantiationDependent())
4038 ExprBits.InstantiationDependent = true;
4039 if (Exprs[I]->containsUnexpandedParameterPack())
4040 ExprBits.ContainsUnexpandedParameterPack = true;
4041
4042 getTrailingObjects<Stmt *>()[I] = Exprs[I];
4043 }
4044 }
4045
4046 ParenListExpr::ParenListExpr(EmptyShell Empty, unsigned NumExprs)
4047 : Expr(ParenListExprClass, Empty) {
4048 ParenListExprBits.NumExprs = NumExprs;
4049 }
4050
4051 ParenListExpr *ParenListExpr::Create(const ASTContext &Ctx,
4052 SourceLocation LParenLoc,
4053 ArrayRef<Expr *> Exprs,
4054 SourceLocation RParenLoc) {
4055 void *Mem = Ctx.Allocate(totalSizeToAlloc<Stmt *>(Exprs.size()),
4056 alignof(ParenListExpr));
4057 return new (Mem) ParenListExpr(LParenLoc, Exprs, RParenLoc);
4058 }
4059
4060 ParenListExpr *ParenListExpr::CreateEmpty(const ASTContext &Ctx,
4061 unsigned NumExprs) {
4062 void *Mem =
4063 Ctx.Allocate(totalSizeToAlloc<Stmt *>(NumExprs), alignof(ParenListExpr));
4064 return new (Mem) ParenListExpr(EmptyShell(), NumExprs);
4065 }
4066
4067 const OpaqueValueExpr *OpaqueValueExpr::findInCopyConstruct(const Expr *e) {
4068 if (const ExprWithCleanups *ewc = dyn_cast<ExprWithCleanups>(e))
4069 e = ewc->getSubExpr();
4070 if (const MaterializeTemporaryExpr *m = dyn_cast<MaterializeTemporaryExpr>(e))
4071 e = m->GetTemporaryExpr();
4072 e = cast<CXXConstructExpr>(e)->getArg(0);
4073 while (const ImplicitCastExpr *ice = dyn_cast<ImplicitCastExpr>(e))
4074 e = ice->getSubExpr();
4075 return cast<OpaqueValueExpr>(e);
4076 }
4077
4078 PseudoObjectExpr *PseudoObjectExpr::Create(const ASTContext &Context,
4079 EmptyShell sh,
4080 unsigned numSemanticExprs) {
4081 void *buffer =
4082 Context.Allocate(totalSizeToAlloc<Expr *>(1 + numSemanticExprs),
4083 alignof(PseudoObjectExpr));
4084 return new(buffer) PseudoObjectExpr(sh, numSemanticExprs);
4085 }
4086
4087 PseudoObjectExpr::PseudoObjectExpr(EmptyShell shell, unsigned numSemanticExprs)
4088 : Expr(PseudoObjectExprClass, shell) {
4089 PseudoObjectExprBits.NumSubExprs = numSemanticExprs + 1;
4090 }
4091
4092 PseudoObjectExpr *PseudoObjectExpr::Create(const ASTContext &C, Expr *syntax,
4093 ArrayRef<Expr*> semantics,
4094 unsigned resultIndex) {
4095 assert(syntax && "no syntactic expression!");
4096 assert(semantics.size() && "no semantic expressions!");
4097
4098 QualType type;
4099 ExprValueKind VK;
4100 if (resultIndex == NoResult) {
4101 type = C.VoidTy;
4102 VK = VK_RValue;
4103 } else {
4104 assert(resultIndex < semantics.size());
4105 type = semantics[resultIndex]->getType();
4106 VK = semantics[resultIndex]->getValueKind();
4107 assert(semantics[resultIndex]->getObjectKind() == OK_Ordinary);
4108 }
4109
4110 void *buffer = C.Allocate(totalSizeToAlloc<Expr *>(semantics.size() + 1),
4111 alignof(PseudoObjectExpr));
4112 return new(buffer) PseudoObjectExpr(type, VK, syntax, semantics,
4113 resultIndex);
4114 }
4115
4116 PseudoObjectExpr::PseudoObjectExpr(QualType type, ExprValueKind VK,
4117 Expr *syntax, ArrayRef<Expr*> semantics,
4118 unsigned resultIndex)
4119 : Expr(PseudoObjectExprClass, type, VK, OK_Ordinary,
4120 /*filled in at end of ctor*/ false, false, false, false) {
4121 PseudoObjectExprBits.NumSubExprs = semantics.size() + 1;
4122 PseudoObjectExprBits.ResultIndex = resultIndex + 1;
4123
4124 for (unsigned i = 0, e = semantics.size() + 1; i != e; ++i) {
4125 Expr *E = (i == 0 ? syntax : semantics[i-1]);
4126 getSubExprsBuffer()[i] = E;
4127
4128 if (E->isTypeDependent())
4129 ExprBits.TypeDependent = true;
4130 if (E->isValueDependent())
4131 ExprBits.ValueDependent = true;
4132 if (E->isInstantiationDependent())
4133 ExprBits.InstantiationDependent = true;
4134 if (E->containsUnexpandedParameterPack())
4135 ExprBits.ContainsUnexpandedParameterPack = true;
4136
4137 if (isa<OpaqueValueExpr>(E))
4138 assert(cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr &&
4139 "opaque-value semantic expressions for pseudo-object "
4140 "operations must have sources");
4141 }
4142 }
4143
4144 //===----------------------------------------------------------------------===//
4145 // Child Iterators for iterating over subexpressions/substatements
4146 //===----------------------------------------------------------------------===//
4147
4148 // UnaryExprOrTypeTraitExpr
4149 Stmt::child_range UnaryExprOrTypeTraitExpr::children() {
4150 const_child_range CCR =
4151 const_cast<const UnaryExprOrTypeTraitExpr *>(this)->children();
4152 return child_range(cast_away_const(CCR.begin()), cast_away_const(CCR.end()));
4153 }
4154
4155 Stmt::const_child_range UnaryExprOrTypeTraitExpr::children() const {
4156 // If this is of a type and the type is a VLA type (and not a typedef), the
4157 // size expression of the VLA needs to be treated as an executable expression.
4158 // Why isn't this weirdness documented better in StmtIterator?
4159 if (isArgumentType()) {
4160 if (const VariableArrayType *T =
4161 dyn_cast<VariableArrayType>(getArgumentType().getTypePtr()))
4162 return const_child_range(const_child_iterator(T), const_child_iterator());
4163 return const_child_range(const_child_iterator(), const_child_iterator());
4164 }
4165 return const_child_range(&Argument.Ex, &Argument.Ex + 1);
4166 }
4167
4168 AtomicExpr::AtomicExpr(SourceLocation BLoc, ArrayRef<Expr*> args,
4169 QualType t, AtomicOp op, SourceLocation RP)
4170 : Expr(AtomicExprClass, t, VK_RValue, OK_Ordinary,
4171 false, false, false, false),
4172 NumSubExprs(args.size()), BuiltinLoc(BLoc), RParenLoc(RP), Op(op)
4173 {
4174 assert(args.size() == getNumSubExprs(op) && "wrong number of subexpressions");
4175 for (unsigned i = 0; i != args.size(); i++) {
4176 if (args[i]->isTypeDependent())
4177 ExprBits.TypeDependent = true;
4178 if (args[i]->isValueDependent())
4179 ExprBits.ValueDependent = true;
4180 if (args[i]->isInstantiationDependent())
4181 ExprBits.InstantiationDependent = true;
4182 if (args[i]->containsUnexpandedParameterPack())
4183 ExprBits.ContainsUnexpandedParameterPack = true;
4184
4185 SubExprs[i] = args[i];
4186 }
4187 }
4188
4189 unsigned AtomicExpr::getNumSubExprs(AtomicOp Op) {
4190 switch (Op) {
4191 case AO__c11_atomic_init:
4192 case AO__opencl_atomic_init:
4193 case AO__c11_atomic_load:
4194 case AO__atomic_load_n:
4195 return 2;
4196
4197 case AO__opencl_atomic_load:
4198 case AO__c11_atomic_store:
4199 case AO__c11_atomic_exchange:
4200 case AO__atomic_load:
4201 case AO__atomic_store:
4202 case AO__atomic_store_n:
4203 case AO__atomic_exchange_n:
4204 case AO__c11_atomic_fetch_add:
4205 case AO__c11_atomic_fetch_sub:
4206 case AO__c11_atomic_fetch_and:
4207 case AO__c11_atomic_fetch_or:
4208 case AO__c11_atomic_fetch_xor:
4209 case AO__atomic_fetch_add:
4210 case AO__atomic_fetch_sub:
4211 case AO__atomic_fetch_and:
4212 case AO__atomic_fetch_or:
4213 case AO__atomic_fetch_xor:
4214 case AO__atomic_fetch_nand:
4215 case AO__atomic_add_fetch:
4216 case AO__atomic_sub_fetch:
4217 case AO__atomic_and_fetch:
4218 case AO__atomic_or_fetch:
4219 case AO__atomic_xor_fetch:
4220 case AO__atomic_nand_fetch:
4221 case AO__atomic_fetch_min:
4222 case AO__atomic_fetch_max:
4223 return 3;
4224
4225 case AO__opencl_atomic_store:
4226 case AO__opencl_atomic_exchange:
4227 case AO__opencl_atomic_fetch_add:
4228 case AO__opencl_atomic_fetch_sub:
4229 case AO__opencl_atomic_fetch_and:
4230 case AO__opencl_atomic_fetch_or:
4231 case AO__opencl_atomic_fetch_xor:
4232 case AO__opencl_atomic_fetch_min:
4233 case AO__opencl_atomic_fetch_max:
4234 case AO__atomic_exchange:
4235 return 4;
4236
4237 case AO__c11_atomic_compare_exchange_strong:
4238 case AO__c11_atomic_compare_exchange_weak:
4239 return 5;
4240
4241 case AO__opencl_atomic_compare_exchange_strong:
4242 case AO__opencl_atomic_compare_exchange_weak:
4243 case AO__atomic_compare_exchange:
4244 case AO__atomic_compare_exchange_n:
4245 return 6;
4246 }
4247 llvm_unreachable("unknown atomic op");
4248 }
4249
4250 QualType AtomicExpr::getValueType() const {
4251 auto T = getPtr()->getType()->castAs<PointerType>()->getPointeeType();
4252 if (auto AT = T->getAs<AtomicType>())
4253 return AT->getValueType();
4254 return T;
4255 }
4256
4257 QualType OMPArraySectionExpr::getBaseOriginalType(const Expr *Base) {
4258 unsigned ArraySectionCount = 0;
4259 while (auto *OASE = dyn_cast<OMPArraySectionExpr>(Base->IgnoreParens())) {
4260 Base = OASE->getBase();
4261 ++ArraySectionCount;
4262 }
4263 while (auto *ASE =
4264 dyn_cast<ArraySubscriptExpr>(Base->IgnoreParenImpCasts())) {
4265 Base = ASE->getBase();
4266 ++ArraySectionCount;
4267 }
4268 Base = Base->IgnoreParenImpCasts();
4269 auto OriginalTy = Base->getType();
4270 if (auto *DRE = dyn_cast<DeclRefExpr>(Base))
4271 if (auto *PVD = dyn_cast<ParmVarDecl>(DRE->getDecl()))
4272 OriginalTy = PVD->getOriginalType().getNonReferenceType();
4273
4274 for (unsigned Cnt = 0; Cnt < ArraySectionCount; ++Cnt) {
4275 if (OriginalTy->isAnyPointerType())
4276 OriginalTy = OriginalTy->getPointeeType();
4277 else {
4278 assert (OriginalTy->isArrayType());
4279 OriginalTy = OriginalTy->castAsArrayTypeUnsafe()->getElementType();
4280 }
4281 }
4282 return OriginalTy;
4283 }
clang::Stmt::child_begin
child_iterator child_begin()
Definition: Stmt.h:1108
clang::CallExpr::CallExpr
CallExpr(StmtClass SC, Expr *Fn, ArrayRef< Expr *> PreArgs, ArrayRef< Expr *> Args, QualType Ty, ExprValueKind VK, SourceLocation RParenLoc, unsigned MinNumArgs, ADLCallKind UsesADL)
Build a call expression, assuming that appropriate storage has been allocated for the trailing object...
Definition: Expr.cpp:1237
clang::ObjCPropertyRefExpr
ObjCPropertyRefExpr - A dot-syntax expression to access an ObjC property.
Definition: ExprObjC.h:577
clang::CXXOperatorCallExpr
A call to an overloaded operator written using operator syntax.
Definition: ExprCXX.h:78
clang::InitListExpr::hasArrayFiller
bool hasArrayFiller() const
Return true if this is an array initializer and its array "filler" has been set.
Definition: Expr.h:4289
clang::SourceManager::getLocForStartOfFile
SourceLocation getLocForStartOfFile(FileID FID) const
Return the source location corresponding to the first byte of the specified file. ...
Definition: SourceManager.h:1067
clang::DesignatedInitExpr::Designator
Represents a single C99 designator.
Definition: Expr.h:4494
clang::DeclarationNameInfo::getLoc
SourceLocation getLoc() const
getLoc - Returns the main location of the declaration name.
Definition: DeclarationName.h:720
clang::CC_X86RegCall
Definition: Specifiers.h:245
clang::Builtin::ID
ID
Definition: Builtins.h:49
clang::Expr::setValueDependent
void setValueDependent(bool VD)
Set whether this expression is value-dependent or not.
Definition: Expr.h:152
clang::ast_matchers::type
const internal::VariadicAllOfMatcher< Type > type
Matches Types in the clang AST.
Definition: ASTMatchersInternal.cpp:592
ASTContext.h
Defines the clang::ASTContext interface.
clang::DeclRefExpr::getBeginLoc
SourceLocation getBeginLoc() const LLVM_READONLY
Definition: Expr.cpp:465
clang::CXXTemporary::getDestructor
const CXXDestructorDecl * getDestructor() const
Definition: ExprCXX.h:1196
clang::CC_X86VectorCall
Definition: Specifiers.h:241
clang::FunctionDecl
Represents a function declaration or definition.
Definition: Decl.h:1738
clang::DesignatedInitExpr::getArrayIndex
Expr * getArrayIndex(const Designator &D) const
Definition: Expr.cpp:3962
clang::CompoundStmt::body_back
Stmt * body_back()
Definition: Stmt.h:1279
clang::FunctionTemplateSpecializationInfo::getTemplate
FunctionTemplateDecl * getTemplate() const
Retrieve the template from which this function was specialized.
Definition: DeclTemplate.h:550
clang::Type::hasAttr
bool hasAttr(attr::Kind AK) const
Determine whether this type had the specified attribute applied to it (looking through top-level type...
Definition: Type.cpp:1630
computeDeclRefDependence
static void computeDeclRefDependence(const ASTContext &Ctx, NamedDecl *D, QualType T, bool &TypeDependent, bool &ValueDependent, bool &InstantiationDependent)
Compute the type-, value-, and instantiation-dependence of a declaration reference based on the decla...
Definition: Expr.cpp:235
clang::Type::isFixedPointType
bool isFixedPointType() const
Return true if this is a fixed point type according to ISO/IEC JTC1 SC22 WG14 N1169.
Definition: Type.h:6591
clang::ConditionalOperator::getLHS
Expr * getLHS() const
Definition: Expr.h:3627
Identifier
StringRef Identifier
Definition: Format.cpp:1636
clang::PseudoObjectExpr::getSyntacticForm
Expr * getSyntacticForm()
Return the syntactic form of this expression, i.e.
Definition: Expr.h:5343
clang::Lexer
Lexer - This provides a simple interface that turns a text buffer into a stream of tokens...
Definition: Lexer.h:77
clang::CallExpr::getRParenLoc
SourceLocation getRParenLoc() const
Definition: Expr.h:2635
clang::InitListExpr::setArrayFiller
void setArrayFiller(Expr *filler)
Definition: Expr.cpp:2035
clang::Stmt::IEEEquad
Definition: Stmt.h:356
clang::BlockExpr::getFunctionType
const FunctionProtoType * getFunctionType() const
getFunctionType - Return the underlying function type for this block.
Definition: Expr.cpp:2131
clang::if
if(T->getSizeExpr()) TRY_TO(TraverseStmt(T -> getSizeExpr()))
clang::PointerType
PointerType - C99 6.7.5.1 - Pointer Declarators.
Definition: Type.h:2537
clang::DesignatedInitExpr::getBeginLoc
SourceLocation getBeginLoc() const LLVM_READONLY
Definition: Expr.cpp:3943
clang::PointerType::getPointeeType
QualType getPointeeType() const
Definition: Type.h:2550
clang::QualType
A (possibly-)qualified type.
Definition: Type.h:638
clang::StringLiteralParser::getOffsetOfStringByte
unsigned getOffsetOfStringByte(const Token &TheTok, unsigned ByteNo) const
getOffsetOfStringByte - This function returns the offset of the specified byte of the string data rep...
Definition: LiteralSupport.cpp:1811
clang::Type::isArrayType
bool isArrayType() const
Definition: Type.h:6345
clang::CallExpr::getArg
Expr * getArg(unsigned Arg)
getArg - Return the specified argument.
Definition: Expr.h:2553
clang::DeclarationNameInfo::getInfo
const DeclarationNameLoc & getInfo() const
Definition: DeclarationName.h:725
clang::Expr::Expr
Expr(StmtClass SC, QualType T, ExprValueKind VK, ExprObjectKind OK, bool TD, bool VD, bool ID, bool ContainsUnexpandedParameterPack)
Definition: Expr.h:110
size_t
__SIZE_TYPE__ size_t
The unsigned integer type of the result of the sizeof operator.
Definition: opencl-c.h:68
clang::Decl::castFromDeclContext
static Decl * castFromDeclContext(const DeclContext *)
Definition: DeclBase.cpp:868
clang::DesignatedInitExpr::FieldDesignator::FieldLoc
unsigned FieldLoc
The location of the field name in the designated initializer.
Definition: Expr.h:4471
clang::InitListExpr::getInit
const Expr * getInit(unsigned Init) const
Definition: Expr.h:4233
clang::Expr::EvaluateAsInt
bool EvaluateAsInt(EvalResult &Result, const ASTContext &Ctx, SideEffectsKind AllowSideEffects=SE_NoSideEffects) const
EvaluateAsInt - Return true if this is a constant which we can fold and convert to an integer...
Definition: ExprConstant.cpp:10951
clang::Stmt
Stmt - This represents one statement.
Definition: Stmt.h:66
clang::DesignatedInitUpdateExpr::DesignatedInitUpdateExpr
DesignatedInitUpdateExpr(const ASTContext &C, SourceLocation lBraceLoc, Expr *baseExprs, SourceLocation rBraceLoc)
Definition: Expr.cpp:4006
clang::CallExpr::getNumArgs
unsigned getNumArgs() const
getNumArgs - Return the number of actual arguments to this call.
Definition: Expr.h:2540
clang::FunctionType
FunctionType - C99 6.7.5.3 - Function Declarators.
Definition: Type.h:3355
clang::StringLiteral::getLocationOfByte
SourceLocation getLocationOfByte(unsigned ByteNo, const SourceManager &SM, const LangOptions &Features, const TargetInfo &Target, unsigned *StartToken=nullptr, unsigned *StartTokenByteOffset=nullptr) const
getLocationOfByte - Return a source location that points to the specified byte of this string literal...
Definition: Expr.cpp:1118
EvaluatedExprVisitor.h
clang::Type::getPointeeType
QualType getPointeeType() const
If this is a pointer, ObjC object pointer, or block pointer, this returns the respective pointee...
Definition: Type.cpp:505
clang::CallExpr::CreateTemporary
static CallExpr * CreateTemporary(void *Mem, Expr *Fn, QualType Ty, ExprValueKind VK, SourceLocation RParenLoc, ADLCallKind UsesADL=NotADL)
Create a temporary call expression with no arguments in the memory pointed to by Mem.
Definition: Expr.cpp:1296
clang::Expr::hasPlaceholderType
bool hasPlaceholderType() const
Returns whether this expression has a placeholder type.
Definition: Expr.h:472
Base
SourceManager.h
Defines the SourceManager interface.
clang::Expr::hasNonTrivialCall
bool hasNonTrivialCall(const ASTContext &Ctx) const
Determine whether this expression involves a call to any function that is not trivial.
Definition: Expr.cpp:3426
clang::Type::isRecordType
bool isRecordType() const
Definition: Type.h:6369
clang::ASTVector::rbegin
reverse_iterator rbegin()
Definition: ASTVector.h:104
clang::MemberExpr::getBase
Expr * getBase() const
Definition: Expr.h:2767
clang::TemplateArgumentList::size
unsigned size() const
Retrieve the number of template arguments in this template argument list.
Definition: DeclTemplate.h:270
clang::Type::isSpecificPlaceholderType
bool isSpecificPlaceholderType(unsigned K) const
Test for a specific placeholder type.
Definition: Type.h:6531
clang::FloatingLiteral::setSemantics
void setSemantics(const llvm::fltSemantics &Sem)
Set the APFloat semantics this literal uses.
Definition: Expr.cpp:876
clang::CallExpr::sizeOfTrailingObjects
static unsigned sizeOfTrailingObjects(unsigned NumPreArgs, unsigned NumArgs)
Return the size in bytes needed for the trailing objects.
Definition: Expr.h:2460
clang::Decl
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:87
clang::Stmt::FloatingLiteralBits
FloatingLiteralBitfields FloatingLiteralBits
Definition: Stmt.h:907
clang::ExtVectorElementExpr::getEncodedElementAccess
void getEncodedElementAccess(SmallVectorImpl< uint32_t > &Elts) const
getEncodedElementAccess - Encode the elements accessed into an llvm aggregate Constant of ConstantInt...
Definition: Expr.cpp:3714
clang::Expr::setType
void setType(QualType t)
Definition: Expr.h:129
clang::InitListExpr::isTransparent
bool isTransparent() const
Is this a transparent initializer list (that is, an InitListExpr that is purely syntactic, and whose semantics are that of the sole contained initializer)?
Definition: Expr.cpp:2059
DeclTemplate.h
Defines the C++ template declaration subclasses.
clang::BinaryOperator::getOpcode
Opcode getOpcode() const
Definition: Expr.h:3322
P
StringRef P
Definition: ASTMatchersInternal.cpp:439
clang::Expr::Classify
Classification Classify(ASTContext &Ctx) const
Classify - Classify this expression according to the C++11 expression taxonomy.
Definition: Expr.h:377
clang::ASTVector::insert
iterator insert(const ASTContext &C, iterator I, const T &Elt)
Definition: ASTVector.h:220
clang::ParenExpr
ParenExpr - This represents a parethesized expression, e.g.
Definition: Expr.h:1844
clang::DeclAccessPair::getDecl
NamedDecl * getDecl() const
Definition: DeclAccessPair.h:42
clang::Stmt::IEEEdouble
Definition: Stmt.h:354
clang::ClassTemplateSpecializationDecl::isExplicitSpecialization
bool isExplicitSpecialization() const
Definition: DeclTemplate.h:1746
clang::IntegerLiteral
Definition: Expr.h:1308
clang::Type
The base class of the type hierarchy.
Definition: Type.h:1407
clang::DeclarationNameInfo::getBeginLoc
SourceLocation getBeginLoc() const
getBeginLoc - Retrieve the location of the first token.
Definition: DeclarationName.h:799
clang::InitListExpr::isSemanticForm
bool isSemanticForm() const
Definition: Expr.h:4335
clang::DeclRefExpr::hasExplicitTemplateArgs
bool hasExplicitTemplateArgs() const
Determines whether this declaration reference was followed by an explicit template argument list...
Definition: Expr.h:1195
clang::Stmt::child_range
llvm::iterator_range< child_iterator > child_range
Definition: Stmt.h:1098
clang::ArrayType
Represents an array type, per C99 6.7.5.2 - Array Declarators.
Definition: Type.h:2812
clang::Stmt::DeclRefExprBits
DeclRefExprBitfields DeclRefExprBits
Definition: Stmt.h:906
clang::CXXConstructExpr
Represents a call to a C++ constructor.
Definition: ExprCXX.h:1262
clang::DeclarationNameInfo::getEndLoc
SourceLocation getEndLoc() const LLVM_READONLY
Definition: DeclarationName.h:806
clang::Expr::getValueKindForType
static ExprValueKind getValueKindForType(QualType T)
getValueKindForType - Given a formal return or parameter type, give its value kind.
Definition: Expr.h:395
clang::TemplateParameterList::getParam
NamedDecl * getParam(unsigned Idx)
Definition: DeclTemplate.h:133
clang::CStyleCastExpr::getLParenLoc
SourceLocation getLParenLoc() const
Definition: Expr.h:3250
clang::ASTContext::getTargetInfo
const TargetInfo & getTargetInfo() const
Definition: ASTContext.h:690
DeclObjC.h
clang::TypeSourceInfo
A container of type source information.
Definition: Decl.h:87
LiteralSupport.h
clang::ExtVectorElementExpr::containsDuplicateElements
bool containsDuplicateElements() const
containsDuplicateElements - Return true if any element access is repeated.
Definition: Expr.cpp:3693
clang::TargetInfo::getCharWidth
unsigned getCharWidth() const
Definition: TargetInfo.h:371
clang::CXXConstructorDecl
Represents a C++ constructor within a class.
Definition: DeclCXX.h:2484
clang::MaterializeTemporaryExpr
Represents a prvalue temporary that is written into memory so that a reference can bind to it...
Definition: ExprCXX.h:4156
clang::CallExpr::getUnusedResultAttr
const Attr * getUnusedResultAttr(const ASTContext &Ctx) const
Returns the WarnUnusedResultAttr that is either declared on the called function, or its return type d...
Definition: Expr.cpp:1415
clang::CC_X86StdCall
Definition: Specifiers.h:238
clang::Expr::ignoreParenBaseCasts
Expr * ignoreParenBaseCasts() LLVM_READONLY
Ignore parentheses and derived-to-base casts.
Definition: Expr.cpp:2676
clang::ArrayType::getElementType
QualType getElementType() const
Definition: Type.h:2847
clang::DeclRefExpr::getEndLoc
SourceLocation getEndLoc() const LLVM_READONLY
Definition: Expr.cpp:470
clang::SourceManager::getBufferData
StringRef getBufferData(FileID FID, bool *Invalid=nullptr) const
Return a StringRef to the source buffer data for the specified FileID.
Definition: SourceManager.cpp:670
clang::OffsetOfExpr::CreateEmpty
static OffsetOfExpr * CreateEmpty(const ASTContext &C, unsigned NumComps, unsigned NumExprs)
Definition: Expr.cpp:1460
clang::OpaqueValueExpr::findInCopyConstruct
static const OpaqueValueExpr * findInCopyConstruct(const Expr *expr)
Given an expression which invokes a copy constructor — i.e.
Definition: Expr.cpp:4067
clang::VarDecl
Represents a variable declaration or definition.
Definition: Decl.h:813
clang::Expr::getObjCProperty
const ObjCPropertyRefExpr * getObjCProperty() const
If this expression is an l-value for an Objective C property, find the underlying property reference ...
Definition: Expr.cpp:3557
clang::CompoundLiteralExpr
CompoundLiteralExpr - [C99 6.5.2.5].
Definition: Expr.h:2925
clang::Type::isEnumeralType
bool isEnumeralType() const
Definition: Type.h:6373
clang::ast_matchers::expr
const internal::VariadicDynCastAllOfMatcher< Stmt, Expr > expr
Matches expressions.
Definition: ASTMatchersInternal.cpp:690
clang::Type::getAs
const T * getAs() const
Member-template getAs<specific type>&#39;.
Definition: Type.h:6748
clang::ASTContext::createMangleContext
MangleContext * createMangleContext()
Definition: ASTContext.cpp:9981
clang::Type::castAsArrayTypeUnsafe
const ArrayType * castAsArrayTypeUnsafe() const
A variant of castAs<> for array type which silently discards qualifiers from the outermost type...
Definition: Type.h:6820
clang::PredefinedExpr::FuncDName
Definition: Expr.h:1773
clang::InitListExpr::resizeInits
void resizeInits(const ASTContext &Context, unsigned NumInits)
Specify the number of initializers.
Definition: Expr.cpp:2019
clang::InitListExpr::setInit
void setInit(unsigned Init, Expr *expr)
Definition: Expr.h:4243
clang::ObjCMethodDecl
ObjCMethodDecl - Represents an instance or class method declaration.
Definition: DeclObjC.h:139
clang::PredefinedExpr::CreateEmpty
static PredefinedExpr * CreateEmpty(const ASTContext &Ctx, bool HasFunctionName)
Create an empty PredefinedExpr.
Definition: Expr.cpp:506
clang::ASTVector::size
size_type size() const
Definition: ASTVector.h:110
clang::InitListExpr::isIdiomaticZeroInitializer
bool isIdiomaticZeroInitializer(const LangOptions &LangOpts) const
Is this the zero initializer {0} in a language which considers it idiomatic?
Definition: Expr.cpp:2082
clang::TemplateParameterList
Stores a list of template parameters for a TemplateDecl and its derived classes.
Definition: DeclTemplate.h:68
clang::DeclRefExpr::CreateEmpty
static DeclRefExpr * CreateEmpty(const ASTContext &Context, bool HasQualifier, bool HasFoundDecl, bool HasTemplateKWAndArgsInfo, unsigned NumTemplateArgs)
Construct an empty declaration reference expression.
Definition: Expr.cpp:450
clang::PrintingPolicy
Describes how types, statements, expressions, and declarations should be printed. ...
Definition: PrettyPrinter.h:38
clang::ExprWithCleanups
Represents an expression – generally a full-expression – that introduces cleanups to be run at the ...
Definition: ExprCXX.h:3089
clang::BinaryOperator::isAssignmentOp
static bool isAssignmentOp(Opcode Opc)
Definition: Expr.h:3410
clang::MultiVersionKind::Target
ExprCXX.h
Defines the clang::Expr interface and subclasses for C++ expressions.
clang::Qualifiers
The collection of all-type qualifiers we support.
Definition: Type.h:141
clang::Expr::getSourceBitField
FieldDecl * getSourceBitField()
If this expression refers to a bit-field, retrieve the declaration of that bit-field.
Definition: Expr.cpp:3595
clang::NamedDecl::getIdentifier
IdentifierInfo * getIdentifier() const
Get the identifier that names this declaration, if there is one.
Definition: Decl.h:270
clang::LabelStmt
LabelStmt - Represents a label, which has a substatement.
Definition: Stmt.h:1593
clang::AtomicExpr::AtomicOp
AtomicOp
Definition: Expr.h:5435
clang::RecordDecl
Represents a struct/union/class.
Definition: Decl.h:3593
clang::DesignatedInitExpr
Represents a C99 designated initializer expression.
Definition: Expr.h:4419
clang::Stmt::IEEEsingle
Definition: Stmt.h:353
clang::NamedDecl::getDeclName
DeclarationName getDeclName() const
Get the actual, stored name of the declaration, which may be a special name.
Definition: Decl.h:298
clang::IdentifierInfo
One of these records is kept for each identifier that is lexed.
Definition: IdentifierTable.h:58
clang::ClassTemplateSpecializationDecl
Represents a class template specialization, which refers to a class template with a given set of temp...
Definition: DeclTemplate.h:1648
clang::StringLiteralParser::GetStringLength
unsigned GetStringLength() const
Definition: LiteralSupport.h:241
clang::Expr::getBestDynamicClassTypeExpr
const Expr * getBestDynamicClassTypeExpr() const
Get the inner expression that determines the best dynamic class.
Definition: Expr.cpp:37
clang::TemplateArgumentList::get
const TemplateArgument & get(unsigned Idx) const
Retrieve the template argument at a given index.
Definition: DeclTemplate.h:255
clang::cast_away_const
StmtIterator cast_away_const(const ConstStmtIterator &RHS)
Definition: StmtIterator.h:152
clang::ASTContext
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:155
clang::NestedNameSpecifierLoc
A C++ nested-name-specifier augmented with source location information.
Definition: NestedNameSpecifier.h:237
clang::Expr::ClassifyLValue
LValueClassification ClassifyLValue(ASTContext &Ctx) const
Reasons why an expression might not be an l-value.
Definition: ExprClassification.cpp:652
clang::CallExpr::UsesADL
static constexpr ADLCallKind UsesADL
Definition: Expr.h:2445
clang::UETT_PreferredAlignOf
Used for GCC&#39;s __alignof.
Definition: TypeTraits.h:107
clang::TargetInfo::getChar32Width
unsigned getChar32Width() const
getChar32Width/Align - Return the size of &#39;char32_t&#39; for this target, in bits.
Definition: TargetInfo.h:557
clang::FullExpr
FullExpr - Represents a "full-expression" node.
Definition: Expr.h:877
clang::Type::isCharType
bool isCharType() const
Definition: Type.cpp:1787
clang::RecordDecl::fields
field_range fields() const
Definition: Decl.h:3784
clang::SourceLocation::getFromRawEncoding
static SourceLocation getFromRawEncoding(unsigned Encoding)
Turn a raw encoding of a SourceLocation object into a real SourceLocation.
Definition: SourceLocation.h:152
clang::Stmt::getBeginLoc
SourceLocation getBeginLoc() const LLVM_READONLY
Definition: Stmt.cpp:288
clang::DeclarationName::getNameKind
NameKind getNameKind() const
Determine what kind of name this is.
Definition: DeclarationName.h:385
clang::FieldDecl
Represents a member of a struct/union/class.
Definition: Decl.h:2579
clang::TemplateArgumentListInfo::size
unsigned size() const
Definition: TemplateBase.h:577
clang::DesignatedInitExpr::Create
static DesignatedInitExpr * Create(const ASTContext &C, llvm::ArrayRef< Designator > Designators, ArrayRef< Expr *> IndexExprs, SourceLocation EqualOrColonLoc, bool GNUSyntax, Expr *Init)
Definition: Expr.cpp:3907
clang::UnaryExprOrTypeTrait
UnaryExprOrTypeTrait
Names for the "expression or type" traits.
Definition: TypeTraits.h:97
clang::Type::isReferenceType
bool isReferenceType() const
Definition: Type.h:6308
clang::CallExpr::setArg
void setArg(unsigned Arg, Expr *ArgExpr)
setArg - Set the specified argument.
Definition: Expr.h:2563
clang::Token
Token - This structure provides full information about a lexed token.
Definition: Token.h:35
clang::DeclRefExpr::Create
static DeclRefExpr * Create(const ASTContext &Context, NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateKWLoc, ValueDecl *D, bool RefersToEnclosingVariableOrCapture, SourceLocation NameLoc, QualType T, ExprValueKind VK, NamedDecl *FoundD=nullptr, const TemplateArgumentListInfo *TemplateArgs=nullptr)
Definition: Expr.cpp:406
clang::FixedPointLiteral
Definition: Expr.h:1351
clang::CastExpr::getSubExpr
Expr * getSubExpr()
Definition: Expr.h:3050
clang::ExtVectorElementExpr::isArrow
bool isArrow() const
isArrow - Return true if the base expression is a pointer to vector, return false if the base express...
Definition: Expr.cpp:3682
clang::LangOptions
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:50
clang::Type::isIntegralOrEnumerationType
bool isIntegralOrEnumerationType() const
Determine whether this type is an integral or enumeration type.
Definition: Type.h:6644
clang::MemberExprNameQualifier::QualifierLoc
NestedNameSpecifierLoc QualifierLoc
The nested-name-specifier that qualifies the name, including source-location information.
Definition: Expr.h:2673
llvm::SmallVectorImpl
Definition: LLVM.h:37
clang::VK_RValue
An r-value expression (a pr-value in the C++11 taxonomy) produces a temporary value.
Definition: Specifiers.h:110
clang::DesignatedInitExpr::Designator::Field
struct FieldDesignator Field
A field designator, e.g., ".x".
Definition: Expr.h:4504
clang::PseudoObjectExpr::const_semantics_iterator
const Expr *const * const_semantics_iterator
Definition: Expr.h:5366
clang::ShuffleVectorExpr::ShuffleVectorExpr
ShuffleVectorExpr(const ASTContext &C, ArrayRef< Expr *> args, QualType Type, SourceLocation BLoc, SourceLocation RP)
Definition: Expr.cpp:3746
clang::FunctionTemplateSpecializationInfo
Provides information about a function template specialization, which is a FunctionDecl that has been ...
Definition: DeclTemplate.h:508
clang::BinaryOperator::getOpcodeStr
StringRef getOpcodeStr() const
Definition: Expr.h:3343
clang::Expr::isGLValue
bool isGLValue() const
Definition: Expr.h:252
clang::ParenListExpr::Create
static ParenListExpr * Create(const ASTContext &Ctx, SourceLocation LParenLoc, ArrayRef< Expr *> Exprs, SourceLocation RParenLoc)
Create a paren list.
Definition: Expr.cpp:4051
clang::InitListExpr
Describes an C or C++ initializer list.
Definition: Expr.h:4185
clang::FunctionTemplateSpecializationInfo::TemplateArguments
const TemplateArgumentList * TemplateArguments
The template arguments used to produce the function template specialization from the function templat...
Definition: DeclTemplate.h:540
clang::Expr::EvaluateAsBooleanCondition
bool EvaluateAsBooleanCondition(bool &Result, const ASTContext &Ctx) const
EvaluateAsBooleanCondition - Return true if this is a constant which we can fold and convert to a boo...
Definition: ExprConstant.cpp:10944
clang::APIntStorage::setValue
void setValue(const ASTContext &C, const llvm::APInt &Val)
Definition: Expr.h:1293
clang::BinaryOperatorKind
BinaryOperatorKind
Definition: OperationKinds.h:26
clang::FixedPointLiteral::CreateFromRawInt
static FixedPointLiteral * CreateFromRawInt(const ASTContext &C, const llvm::APInt &V, QualType type, SourceLocation l, unsigned Scale)
Definition: Expr.cpp:814
clang::FieldDecl::isBitField
bool isBitField() const
Determines whether this field is a bitfield.
Definition: Decl.h:2657
clang::DesignatedInitExpr::getEndLoc
SourceLocation getEndLoc() const LLVM_READONLY
Definition: Expr.cpp:3958
clang::RQ_LValue
An lvalue ref-qualifier was provided (&).
Definition: Type.h:1363
clang::Ctor_Base
Base object ctor.
Definition: ABI.h:27
clang::TemplateArgumentListInfo
A convenient class for passing around template argument information.
Definition: TemplateBase.h:555
clang::ASTContext::getObjCGCAttrKind
Qualifiers::GC getObjCGCAttrKind(QualType Ty) const
Return one of the GCNone, Weak or Strong Objective-C garbage collection attributes.
Definition: ASTContext.cpp:7773
clang::AtomicExpr::getPtr
Expr * getPtr() const
Definition: Expr.h:5465
clang::Type::getAsArrayTypeUnsafe
const ArrayType * getAsArrayTypeUnsafe() const
A variant of getAs<> for array types which silently discards qualifiers from the outermost type...
Definition: Type.h:6797
clang::Expr::getValueKind
ExprValueKind getValueKind() const
getValueKind - The value kind that this expression produces.
Definition: Expr.h:405
clang::ComparisonCategoryType::First
clang::Expr::NullPointerConstantValueDependence
NullPointerConstantValueDependence
Enumeration used to describe how isNullPointerConstant() should cope with value-dependent expressions...
Definition: Expr.h:709
clang::CallExpr::getNumPreArgs
unsigned getNumPreArgs() const
Definition: Expr.h:2477
clang::Type::containsUnexpandedParameterPack
bool containsUnexpandedParameterPack() const
Whether this type is or contains an unexpanded parameter pack, used to support C++0x variadic templat...
Definition: Type.h:1831
isRecordType
static bool isRecordType(QualType T)
Definition: SemaExprMember.cpp:1200
clang::PseudoObjectExpr::semantics_end
semantics_iterator semantics_end()
Definition: Expr.h:5373
clang::BinaryOperator
A builtin binary operation expression such as "x + y" or "x <= y".
Definition: Expr.h:3287
clang::QualType::isVolatileQualified
bool isVolatileQualified() const
Determine whether this type is volatile-qualified.
Definition: Type.h:6142
clang::LangAS::opencl_private
clang::InitListExpr::children
child_range children()
Definition: Expr.h:4368
clang::Expr::isBoundMemberFunction
bool isBoundMemberFunction(ASTContext &Ctx) const
Returns true if this expression is a bound member function.
Definition: Expr.cpp:2530
clang::Stmt::IEEEhalf
Definition: Stmt.h:352
clang::Expr::IgnoreParenCasts
Expr * IgnoreParenCasts() LLVM_READONLY
IgnoreParenCasts - Ignore parentheses and casts.
Definition: Expr.cpp:2595
clang::StringLiteral::StringKind
StringKind
StringLiteral is followed by several trailing objects.
Definition: Expr.h:1588
clang::RecordDecl::field_begin
field_iterator field_begin() const
Definition: Decl.cpp:4145
clang::BlockExpr::getCaretLocation
SourceLocation getCaretLocation() const
Definition: Expr.cpp:2137
clang::ParenListExpr
Definition: Expr.h:4919
clang::Lexer::AdvanceToTokenCharacter
static SourceLocation AdvanceToTokenCharacter(SourceLocation TokStart, unsigned Characters, const SourceManager &SM, const LangOptions &LangOpts)
AdvanceToTokenCharacter - If the current SourceLocation specifies a location at the start of a token...
Definition: Lexer.h:349
isBooleanType
static bool isBooleanType(QualType Ty)
Definition: BoolAssignmentChecker.cpp:42
clang::SubobjectAdjustment
An adjustment to be made to the temporary created when emitting a reference binding, which accesses a particular subobject of that temporary.
Definition: Expr.h:61
clang::CastExpr
CastExpr - Base class for type casts, including both implicit casts (ImplicitCastExpr) and explicit c...
Definition: Expr.h:2998
clang::CXXBindTemporaryExpr
Represents binding an expression to a temporary.
Definition: ExprCXX.h:1217
clang::SourceManager::getSpellingLoc
SourceLocation getSpellingLoc(SourceLocation Loc) const
Given a SourceLocation object, return the spelling location referenced by the ID. ...
Definition: SourceManager.h:1165
clang::CXXBindTemporaryExpr::getTemporary
CXXTemporary * getTemporary()
Definition: ExprCXX.h:1236
clang::Expr::isCXX98IntegralConstantExpr
bool isCXX98IntegralConstantExpr(const ASTContext &Ctx) const
isCXX98IntegralConstantExpr - Return true if this expression is an integral constant expression in C+...
Definition: ExprConstant.cpp:11593
clang::LambdaExpr
A C++ lambda expression, which produces a function object (of unspecified type) that can be invoked l...
Definition: ExprCXX.h:1649
clang::CXXRecordDecl::hasTrivialDestructor
bool hasTrivialDestructor() const
Determine whether this class has a trivial destructor (C++ [class.dtor]p3)
Definition: DeclCXX.h:1478
clang::IntegerLiteral::Create
static IntegerLiteral * Create(const ASTContext &C, const llvm::APInt &V, QualType type, SourceLocation l)
Returns a new integer literal with value &#39;V&#39; and type &#39;type&#39;.
Definition: Expr.cpp:792
clang::DeclRefExpr::getQualifierLoc
NestedNameSpecifierLoc getQualifierLoc() const
If the name was qualified, retrieves the nested-name-specifier that precedes the name, with source-location information.
Definition: Expr.h:1133
clang::Expr::isTypeDependent
bool isTypeDependent() const
isTypeDependent - Determines whether this expression is type-dependent (C++ [temp.dep.expr]), which means that its type could change from one template instantiation to the next.
Definition: Expr.h:167
clang::OK_Ordinary
An ordinary object is located at an address in memory.
Definition: Specifiers.h:126
Mangle.h
clang::FloatingLiteral
Definition: Expr.h:1445
clang::CapturedDecl
Represents the body of a CapturedStmt, and serves as its DeclContext.
Definition: Decl.h:4044
clang::ObjCInterfaceDecl
Represents an ObjC class declaration.
Definition: DeclObjC.h:1172
clang::UnaryOperator::getOperatorLoc
SourceLocation getOperatorLoc() const
getOperatorLoc - Return the location of the operator.
Definition: Expr.h:1930
llvm::ArrayRef
Definition: LLVM.h:32
clang::Expr::NPCK_GNUNull
Expression is a GNU-style __null constant.
Definition: Expr.h:704
clang::Stmt::StmtClass
StmtClass
Definition: Stmt.h:68
llvm::SmallString
Definition: LLVM.h:35
clang::FunctionTemplateSpecializationInfo::isExplicitSpecialization
bool isExplicitSpecialization() const
Definition: DeclTemplate.h:557
clang::BlockExpr::getBody
const Stmt * getBody() const
Definition: Expr.cpp:2140
clang::BindingDecl
A binding in a decomposition declaration.
Definition: DeclCXX.h:3795
clang::Builtin::Context::isUnevaluated
bool isUnevaluated(unsigned ID) const
Returns true if this builtin does not perform the side-effects of its arguments.
Definition: Builtins.h:128
clang::CXXDefaultArgExpr
A default argument (C++ [dcl.fct.default]).
Definition: ExprCXX.h:1073
clang::UnaryOperator::getOverloadedOpcode
static Opcode getOverloadedOpcode(OverloadedOperatorKind OO, bool Postfix)
Retrieve the unary opcode that corresponds to the given overloaded operator.
Definition: Expr.cpp:1202
clang::APNumericStorage::setIntValue
void setIntValue(const ASTContext &C, const llvm::APInt &Val)
Definition: Expr.cpp:763
clang::Expr::isObjCSelfExpr
bool isObjCSelfExpr() const
Check if this expression is the ObjC &#39;self&#39; implicit parameter.
Definition: Expr.cpp:3577
clang::CXXThisExpr
Represents the this expression in C++.
Definition: ExprCXX.h:976
clang::BinaryOperator::isNullPointerArithmeticExtension
static bool isNullPointerArithmeticExtension(ASTContext &Ctx, Opcode Opc, Expr *LHS, Expr *RHS)
Definition: Expr.cpp:1960
clang::ASTTemplateKWAndArgsInfo
Represents an explicit template argument list in C++, e.g., the "<int>" in "sort<int>".
Definition: TemplateBase.h:651
clang::Stmt::PredefinedExprBits
PredefinedExprBitfields PredefinedExprBits
Definition: Stmt.h:905
clang::ExplicitCastExpr::getTypeAsWritten
QualType getTypeAsWritten() const
getTypeAsWritten - Returns the type that this expression is casting to, as written in the source code...
Definition: Expr.h:3213
clang::NestedNameSpecifier::isInstantiationDependent
bool isInstantiationDependent() const
Whether this nested name specifier involves a template parameter.
Definition: NestedNameSpecifier.cpp:233
clang::TemplateArgument::print
void print(const PrintingPolicy &Policy, raw_ostream &Out) const
Print this template argument to the given output stream.
Definition: TemplateBase.cpp:394
clang::CallExpr::isUnevaluatedBuiltinCall
bool isUnevaluatedBuiltinCall(const ASTContext &Ctx) const
Returns true if this is a call to a builtin which does not evaluate side-effects within its arguments...
Definition: Expr.cpp:1390
clang::Decl::hasAttr
bool hasAttr() const
Definition: DeclBase.h:531
clang::ConditionalOperator
ConditionalOperator - The ?: ternary operator.
Definition: Expr.h:3582
clang::Stmt::const_child_range
llvm::iterator_range< const_child_iterator > const_child_range
Definition: Stmt.h:1099
CharInfo.h
clang::CompoundStmt
CompoundStmt - This represents a group of statements like { stmt stmt }.
Definition: Stmt.h:1241
clang::Type::getAsCXXRecordDecl
CXXRecordDecl * getAsCXXRecordDecl() const
Retrieves the CXXRecordDecl that this type refers to, either because the type is a RecordType or beca...
Definition: Type.cpp:1613
clang::FunctionProtoType
Represents a prototype with parameter type info, e.g.
Definition: Type.h:3687
clang::Expr::EvaluateAsLValue
bool EvaluateAsLValue(EvalResult &Result, const ASTContext &Ctx) const
EvaluateAsLValue - Evaluate an expression to see if we can fold it to an lvalue with link time known ...
Definition: ExprConstant.cpp:10971
clang::Expr::IgnoreParenNoopCasts
Expr * IgnoreParenNoopCasts(ASTContext &Ctx) LLVM_READONLY
IgnoreParenNoopCasts - Ignore parentheses and casts that do not change the value (including ptr->int ...
Definition: Expr.cpp:2726
clang::CXXConstructExpr::getConstructor
CXXConstructorDecl * getConstructor() const
Get the constructor that this expression will (ultimately) call.
Definition: ExprCXX.h:1334
clang::CastKind
CastKind
CastKind - The kind of operation required for a conversion.
Definition: OperationKinds.h:21
clang::ImplicitCastExpr::Create
static ImplicitCastExpr * Create(const ASTContext &Context, QualType T, CastKind Kind, Expr *Operand, const CXXCastPath *BasePath, ExprValueKind Cat)
Definition: Expr.cpp:1844
clang::Expr::NPC_NeverValueDependent
Specifies that the expression should never be value-dependent.
Definition: Expr.h:711
clang::UnaryExprOrTypeTraitExpr
UnaryExprOrTypeTraitExpr - expression with either a type or (unevaluated) expression operand...
Definition: Expr.h:2222
clang::CC_X86ThisCall
Definition: Specifiers.h:240
clang::ASTVector::end
iterator end()
Definition: ASTVector.h:100
clang::DesignatedInitUpdateExpr::getUpdater
InitListExpr * getUpdater() const
Definition: Expr.h:4771
clang::ConstantExpr
ConstantExpr - An expression that occurs in a constant context.
Definition: Expr.h:904
clang::StringLiteral::outputString
void outputString(raw_ostream &OS) const
Definition: Expr.cpp:1005
clang::Expr::EvaluateKnownConstInt
llvm::APSInt EvaluateKnownConstInt(const ASTContext &Ctx, SmallVectorImpl< PartialDiagnosticAt > *Diag=nullptr) const
EvaluateKnownConstInt - Call EvaluateAsRValue and return the folded integer.
Definition: ExprConstant.cpp:11046
clang::Stmt::const_child_iterator
ConstStmtIterator const_child_iterator
Definition: Stmt.h:1096
Offset
unsigned Offset
Definition: Format.cpp:1631
clang::Expr::HasSideEffects
bool HasSideEffects(const ASTContext &Ctx, bool IncludePossibleEffects=true) const
HasSideEffects - This routine returns true for all those expressions which have any effect other than...
Definition: Expr.cpp:3101
clang::TargetInfo
Exposes information about the current target.
Definition: TargetInfo.h:54
clang::OK_ObjCProperty
An Objective-C property is a logical field of an Objective-C object which is read and written via Obj...
Definition: Specifiers.h:136
clang::Stmt::NoStmtClass
Definition: Stmt.h:69
clang::TemplateDecl::getTemplateParameters
TemplateParameterList * getTemplateParameters() const
Get the list of template parameters.
Definition: DeclTemplate.h:432
clang::StringLiteral::Create
static StringLiteral * Create(const ASTContext &Ctx, StringRef Str, StringKind Kind, bool Pascal, QualType Ty, const SourceLocation *Loc, unsigned NumConcatenated)
This is the "fully general" constructor that allows representation of strings formed from multiple co...
Definition: Expr.cpp:983
clang::CallExpr::Create
static CallExpr * Create(const ASTContext &Ctx, Expr *Fn, ArrayRef< Expr *> Args, QualType Ty, ExprValueKind VK, SourceLocation RParenLoc, unsigned MinNumArgs=0, ADLCallKind UsesADL=NotADL)
Create a call expression.
Definition: Expr.cpp:1283
clang::DeclarationName::getCXXNameType
QualType getCXXNameType() const
If this name is one of the C++ names (of a constructor, destructor, or conversion function)...
Definition: DeclarationName.h:440
clang::ValueDecl
Represent the declaration of a variable (in which case it is an lvalue) a function (in which case it ...
Definition: Decl.h:637
clang::Expr
This represents one expression.
Definition: Expr.h:106
clang::DesignatedInitExpr::setDesignators
void setDesignators(const ASTContext &C, const Designator *Desigs, unsigned NumDesigs)
Definition: Expr.cpp:3926
End
SourceLocation End
Definition: USRLocFinder.cpp:167
clang::ExprValueKind
ExprValueKind
The categorization of expression values, currently following the C++11 scheme.
Definition: Specifiers.h:107
clang::CallExpr::setCallee
void setCallee(Expr *F)
Definition: Expr.h:2516
Label
std::string Label
Definition: UsingDeclarationsSorter.cpp:70
clang::OffsetOfNode::getFieldName
IdentifierInfo * getFieldName() const
For a field or identifier offsetof node, returns the name of the field.
Definition: Expr.cpp:1493
clang::MemberExpr::getEndLoc
SourceLocation getEndLoc() const LLVM_READONLY
Definition: Expr.cpp:1614
clang::Type::castAs
const T * castAs() const
Member-template castAs<specific type>.
Definition: Type.h:6811
clang::DesignatedInitUpdateExpr
Definition: Expr.h:4749
clang::NestedNameSpecifierLoc::getBeginLoc
SourceLocation getBeginLoc() const
Retrieve the location of the beginning of this nested-name-specifier.
Definition: NestedNameSpecifier.h:293
clang::Expr::setTypeDependent
void setTypeDependent(bool TD)
Set whether this expression is type-dependent or not.
Definition: Expr.h:170
clang::CXXDestructorDecl
Represents a C++ destructor within a class.
Definition: DeclCXX.h:2706
clang::CallExpr::getCallee
Expr * getCallee()
Definition: Expr.h:2514
clang::DesignatedInitExpr::Designator::isFieldDesignator
bool isFieldDesignator() const
Definition: Expr.h:4542
clang::InitListExpr::getNumInits
unsigned getNumInits() const
Definition: Expr.h:4215
clang::Expr::skipRValueSubobjectAdjustments
const Expr * skipRValueSubobjectAdjustments() const
Definition: Expr.h:860
clang::RecordDecl::field_end
field_iterator field_end() const
Definition: Decl.h:3787
clang::Decl::getDeclContext
DeclContext * getDeclContext()
Definition: DeclBase.h:427
clang::Stmt::ExprBits
ExprBitfields ExprBits
Definition: Stmt.h:904
clang::DeclRefExpr::hasQualifier
bool hasQualifier() const
Determine whether this declaration reference was preceded by a C++ nested-name-specifier, e.g., N::foo.
Definition: Expr.h:1129
clang::UnaryOperator::getOverloadedOperator
static OverloadedOperatorKind getOverloadedOperator(Opcode Opc)
Retrieve the overloaded operator kind that corresponds to the given unary opcode. ...
Definition: Expr.cpp:1217
Lexer.h
clang::DesignatedInitUpdateExpr::children
child_range children()
Definition: Expr.h:4778
clang::FloatingLiteral::Create
static FloatingLiteral * Create(const ASTContext &C, const llvm::APFloat &V, bool isexact, QualType Type, SourceLocation L)
Definition: Expr.cpp:848
clang::DecltypeType
Represents the type decltype(expr) (C++11).
Definition: Type.h:4246
clang::QualType::getAsStringInternal
void getAsStringInternal(std::string &Str, const PrintingPolicy &Policy) const
Definition: TypePrinter.cpp:1842
clang::InitListExpr::inits
ArrayRef< Expr * > inits()
Definition: Expr.h:4225
clang::Expr::NPC_ValueDependentIsNull
Specifies that a value-dependent expression of integral or dependent type should be considered a null...
Definition: Expr.h:715
clang::MemberExprNameQualifier
Extra data stored in some MemberExpr objects.
Definition: Expr.h:2670
clang::Expr::isTemporaryObject
bool isTemporaryObject(ASTContext &Ctx, const CXXRecordDecl *TempTy) const
Determine whether the result of this expression is a temporary object of the given class type...
Definition: Expr.cpp:2800
clang::Dtor_Base
Base object dtor.
Definition: ABI.h:37
clang::Expr::getType
QualType getType() const
Definition: Expr.h:128
StmtVisitor.h
clang::Stmt::StringLiteralBits
StringLiteralBitfields StringLiteralBits
Definition: Stmt.h:908
clang::DeclContext::getParent
DeclContext * getParent()
getParent - Returns the containing DeclContext.
Definition: DeclBase.h:1752
clang::PredefinedExpr::Create
static PredefinedExpr * Create(const ASTContext &Ctx, SourceLocation L, QualType FNTy, IdentKind IK, StringLiteral *SL)
Create a PredefinedExpr.
Definition: Expr.cpp:497
clang::Designator::ArrayDesignator
Definition: Designator.h:40
clang::ObjCMessageExpr
An expression that sends a message to the given Objective-C object or class.
Definition: ExprObjC.h:904
clang::InitListExpr::InitListExpr
InitListExpr(const ASTContext &C, SourceLocation lbraceloc, ArrayRef< Expr *> initExprs, SourceLocation rbraceloc)
Definition: Expr.cpp:1992
clang::CastExpr::getSubExprAsWritten
Expr * getSubExprAsWritten()
Retrieve the cast subexpression as it was written in the source code, looking through any implicit ca...
Definition: Expr.cpp:1767
clang::UnaryOperator
UnaryOperator - This represents the unary-expression&#39;s (except sizeof and alignof), the postinc/postdec operators from postfix-expression, and various extensions.
Definition: Expr.h:1896
clang::DesignatedInitExpr::ArrayOrRangeDesignator::Index
unsigned Index
Location of the first index expression within the designated initializer expression&#39;s list of subexpr...
Definition: Expr.h:4478
clang::VectorType
Represents a GCC generic vector type.
Definition: Type.h:3168
clang::Expr::LV_MemberFunction
Definition: Expr.h:261
clang::DesignatedInitExpr::Designator::getBeginLoc
SourceLocation getBeginLoc() const LLVM_READONLY
Definition: Expr.h:4595
clang::SubstNonTypeTemplateParmExpr
Represents a reference to a non-type template parameter that has been substituted with a template arg...
Definition: ExprCXX.h:3958
clang::DeclContext::isDependentContext
bool isDependentContext() const
Determines whether this context is dependent on a template parameter.
Definition: DeclBase.cpp:1078
clang::Expr::SE_AllowUndefinedBehavior
Allow UB that we can give a value, but not arbitrary unmodeled side effects.
Definition: Expr.h:597
clang::DeclRefExpr::getDecl
ValueDecl * getDecl()
Definition: Expr.h:1114
clang::ComparisonCategoryType::Last
clang::ASTContext::getTypeDeclType
QualType getTypeDeclType(const TypeDecl *Decl, const TypeDecl *PrevDecl=nullptr) const
Return the unique reference to the type for the specified type declaration.
Definition: ASTContext.h:1396
clang::ObjCSubstitutionContext::Result
The result type of a method or function.
clang::FunctionDecl::isTrivial
bool isTrivial() const
Whether this function is "trivial" in some specialized C++ senses.
Definition: Decl.h:2026
clang::PredefinedExpr::IdentKind
IdentKind
Definition: Expr.h:1769
clang::CStyleCastExpr
CStyleCastExpr - An explicit cast in C (C99 6.5.4) or a C-style cast in C++ (C++ [expr.cast]), which uses the syntax (Type)expr.
Definition: Expr.h:3224
clang::QualType::isNull
bool isNull() const
Return true if this QualType doesn&#39;t point to a type yet.
Definition: Type.h:703
clang::ObjCMethodDecl::getSelfDecl
ImplicitParamDecl * getSelfDecl() const
Definition: DeclObjC.h:414
clang::ASTVector::rend
reverse_iterator rend()
Definition: ASTVector.h:106
v
do v
Definition: arm_acle.h:78
SM
const SourceManager & SM
Definition: Format.cpp:1490
uintptr_t
__UINTPTR_TYPE__ uintptr_t
An unsigned integer type with the property that any valid pointer to void can be converted to this ty...
Definition: opencl-c.h:90
clang::CXXOperatorCallExpr::getSourceRange
SourceRange getSourceRange() const
Definition: ExprCXX.h:141
clang::Stmt::getEndLoc
SourceLocation getEndLoc() const LLVM_READONLY
Definition: Stmt.cpp:301
clang::Expr::getObjectKind
ExprObjectKind getObjectKind() const
getObjectKind - The object kind that this expression produces.
Definition: Expr.h:412
clang::CallExpr::getBuiltinCallee
unsigned getBuiltinCallee() const
getBuiltinCallee - If this is a call to a builtin, return the builtin ID of the callee.
Definition: Expr.cpp:1368
clang::TargetInfo::getWCharWidth
unsigned getWCharWidth() const
getWCharWidth/Align - Return the size of &#39;wchar_t&#39; for this target, in bits.
Definition: TargetInfo.h:547
clang::RecordType::getDecl
RecordDecl * getDecl() const
Definition: Type.h:4380
clang::CXXOperatorCallExpr::getOperatorLoc
SourceLocation getOperatorLoc() const
Returns the location of the operator symbol in the expression.
Definition: ExprCXX.h:129
clang::Expr::IgnoreCasts
Expr * IgnoreCasts() LLVM_READONLY
Ignore casts. Strip off any CastExprs, returning their operand.
Definition: Expr.cpp:2621
clang::BinaryOperator::getOverloadedOpcode
static Opcode getOverloadedOpcode(OverloadedOperatorKind OO)
Retrieve the binary opcode that corresponds to the given overloaded operator.
Definition: Expr.cpp:1897
clang::FloatingLiteral::getSemantics
const llvm::fltSemantics & getSemantics() const
Return the APFloat semantics this literal uses.
Definition: Expr.cpp:858
clang::Expr::IgnoreConversionOperator
Expr * IgnoreConversionOperator() LLVM_READONLY
IgnoreConversionOperator - Ignore conversion operator.
Definition: Expr.cpp:2715
clang::LangAS::opencl_generic
clang::StmtIterator
Definition: StmtIterator.h:125
clang::AtomicExpr::AtomicExpr
AtomicExpr(SourceLocation BLoc, ArrayRef< Expr *> args, QualType t, AtomicOp op, SourceLocation RP)
Definition: Expr.cpp:4168
clang::DesignatedInitExpr::FieldDesignator::DotLoc
unsigned DotLoc
The location of the &#39;.&#39; in the designated initializer.
Definition: Expr.h:4468
clang::UnaryExprOrTypeTraitExpr::UnaryExprOrTypeTraitExpr
UnaryExprOrTypeTraitExpr(UnaryExprOrTypeTrait ExprKind, TypeSourceInfo *TInfo, QualType resultType, SourceLocation op, SourceLocation rp)
Definition: Expr.h:2230
clang::CXXDynamicCastExpr
A C++ dynamic_cast expression (C++ [expr.dynamic.cast]).
Definition: ExprCXX.h:362
clang::DesignatedInitExpr::ExpandDesignator
void ExpandDesignator(const ASTContext &C, unsigned Idx, const Designator *First, const Designator *Last)
Replaces the designator at index Idx with the series of designators in [First, Last).
Definition: Expr.cpp:3981
clang::OpaqueValueExpr
OpaqueValueExpr - An expression referring to an opaque object of a fixed type and value class...
Definition: Expr.h:945
clang::DesignatedInitUpdateExpr::getBase
Expr * getBase() const
Definition: Expr.h:4768
clang::Stmt::ParenListExprBits
ParenListExprBitfields ParenListExprBits
Definition: Stmt.h:918
clang::PredefinedExpr::getIdentKindName
static StringRef getIdentKindName(IdentKind IK)
Definition: Expr.cpp:513
false
#define false
Definition: stdbool.h:33
Kind
Kind
Definition: ChrootChecker.cpp:29
Attr.h
clang::QualType::getCanonicalType
QualType getCanonicalType() const
Definition: Type.h:6111
clang::PseudoObjectExpr
PseudoObjectExpr - An expression which accesses a pseudo-object l-value.
Definition: Expr.h:5299
clang::Expr::isInstantiationDependent
bool isInstantiationDependent() const
Whether this expression is instantiation-dependent, meaning that it depends in some way on a template...
Definition: Expr.h:191
clang::DeclRefExpr::getRAngleLoc
SourceLocation getRAngleLoc() const
Retrieve the location of the right angle bracket ending the explicit template argument list following...
Definition: Expr.h:1183
clang::Expr::isNullPointerConstant
NullPointerConstantKind isNullPointerConstant(ASTContext &Ctx, NullPointerConstantValueDependence NPC) const
isNullPointerConstant - C99 6.3.2.3p3 - Test if this reduces down to a Null pointer constant...
Definition: Expr.cpp:3438
clang::SourceLocation
Encodes a location in the source.
Definition: SourceLocation.h:88
clang::FunctionType::getReturnType
QualType getReturnType() const
Definition: Type.h:3613
clang::BinaryOperator::getOperatorLoc
SourceLocation getOperatorLoc() const
Definition: Expr.h:3319
clang::Stmt::PseudoObjectExprBits
PseudoObjectExprBitfields PseudoObjectExprBits
Definition: Stmt.h:919
clang::QualType::getAddressSpace
LangAS getAddressSpace() const
Return the address space of this type.
Definition: Type.h:6188
clang::Expr::NPCK_NotNull
Expression is not a Null pointer constant.
Definition: Expr.h:688
clang::UnaryOperator::getSubExpr
Expr * getSubExpr() const
Definition: Expr.h:1926
clang::CastExpr::getCastKind
CastKind getCastKind() const
Definition: Expr.h:3044
clang::CastExpr::getTargetFieldForToUnionCast
static const FieldDecl * getTargetFieldForToUnionCast(QualType unionType, QualType opType)
Definition: Expr.cpp:1824
clang::UserDefinedLiteral
A call to a literal operator (C++11 [over.literal]) written as a user-defined literal (C++11 [lit...
Definition: ExprCXX.h:481
clang::TagDecl
Represents the declaration of a struct/union/class/enum.
Definition: Decl.h:3064
clang::ObjCMessageExpr::getMethodFamily
ObjCMethodFamily getMethodFamily() const
Definition: ExprObjC.h:1322
clang::TargetInfo::getChar16Width
unsigned getChar16Width() const
getChar16Width/Align - Return the size of &#39;char16_t&#39; for this target, in bits.
Definition: TargetInfo.h:552
clang::CXXMemberCallExpr
Represents a call to a member function that may be written either with member call syntax (e...
Definition: ExprCXX.h:171
clang::Decl::getASTContext
ASTContext & getASTContext() const LLVM_READONLY
Definition: DeclBase.cpp:376
clang::LambdaExpr::capture_inits
llvm::iterator_range< capture_init_iterator > capture_inits()
Retrieve the initialization expressions for this lambda&#39;s captures.
Definition: ExprCXX.h:1783
clang::StringLiteral::CreateEmpty
static StringLiteral * CreateEmpty(const ASTContext &Ctx, unsigned NumConcatenated, unsigned Length, unsigned CharByteWidth)
Construct an empty string literal.
Definition: Expr.cpp:994
getUnderlyingType
static QualType getUnderlyingType(const SubRegion *R)
Definition: RegionStore.cpp:1527
clang::FieldDecl::getInClassInitializer
Expr * getInClassInitializer() const
Get the C++11 default member initializer for this member, or null if one has not been set...
Definition: Decl.h:2721
clang::CC_X86FastCall
Definition: Specifiers.h:239
clang::FixedPointValueToString
void FixedPointValueToString(SmallVectorImpl< char > &Str, llvm::APSInt Val, unsigned Scale)
Definition: Type.cpp:4017
clang::ExprObjectKind
ExprObjectKind
A further classification of the kind of object referenced by an l-value or x-value.
Definition: Specifiers.h:124
clang::OffsetOfExpr::Create
static OffsetOfExpr * Create(const ASTContext &C, QualType type, SourceLocation OperatorLoc, TypeSourceInfo *tsi, ArrayRef< OffsetOfNode > comps, ArrayRef< Expr *> exprs, SourceLocation RParenLoc)
Definition: Expr.cpp:1447
clang::Type::isIntegralType
bool isIntegralType(const ASTContext &Ctx) const
Determine whether this type is an integral type.
Definition: Type.cpp:1759
clang::CXXMethodDecl
Represents a static or instance method of a struct/union/class.
Definition: DeclCXX.h:2041
clang::prec::Shift
Definition: OperatorPrecedence.h:40
clang::ASTContext::getAsConstantArrayType
const ConstantArrayType * getAsConstantArrayType(QualType T) const
Definition: ASTContext.h:2413
clang::FixedPointLiteral::getValueAsString
std::string getValueAsString(unsigned Radix) const
Definition: Expr.cpp:822
clang::PredefinedExpr::ComputeName
static std::string ComputeName(IdentKind IK, const Decl *CurrentDecl)
Definition: Expr.cpp:537
clang::FunctionDecl::getParamDecl
const ParmVarDecl * getParamDecl(unsigned i) const
Definition: Decl.h:2285
clang::Expr::NPC_ValueDependentIsNotNull
Specifies that a value-dependent expression should be considered to never be a null pointer constant...
Definition: Expr.h:719
clang::ASTContext::VoidTy
CanQualType VoidTy
Definition: ASTContext.h:1016
clang::InitListExpr::updateInit
Expr * updateInit(const ASTContext &C, unsigned Init, Expr *expr)
Updates the initializer at index Init with the new expression expr, and returns the old expression at...
Definition: Expr.cpp:2023
Paren
Definition: PPMacroExpansion.cpp:619
clang::CallExpr::getEndLoc
SourceLocation getEndLoc() const LLVM_READONLY
Definition: Expr.cpp:1437
clang::Expr::isValueDependent
bool isValueDependent() const
isValueDependent - Determines whether this expression is value-dependent (C++ [temp.dep.constexpr]).
Definition: Expr.h:149
clang::DeclAccessPair::getAccess
AccessSpecifier getAccess() const
Definition: DeclAccessPair.h:45
clang::Expr::isKnownToHaveBooleanValue
bool isKnownToHaveBooleanValue() const
isKnownToHaveBooleanValue - Return true if this is an integer expression that is known to return 0 or...
Definition: Expr.cpp:134
llvm::SmallVector
Definition: LLVM.h:36
clang::TemplateParameterList::size
unsigned size() const
Definition: DeclTemplate.h:124
clang::RefQualifierKind
RefQualifierKind
The kind of C++11 ref-qualifier associated with a function type.
Definition: Type.h:1358
clang::ImplicitCastExpr
ImplicitCastExpr - Allows us to explicitly represent implicit type conversions, which have no direct ...
Definition: Expr.h:3115
clang::Expr::findBoundMemberType
static QualType findBoundMemberType(const Expr *expr)
Given an expression of bound-member type, find the type of the member.
Definition: Expr.cpp:2536
clang::InitListExpr::getInits
Expr ** getInits()
Retrieve the set of initializers.
Definition: Expr.h:4218
clang::Expr::refersToVectorElement
bool refersToVectorElement() const
Returns whether this expression refers to a vector element.
Definition: Expr.cpp:3642
clang::DesignatedInitExpr::CreateEmpty
static DesignatedInitExpr * CreateEmpty(const ASTContext &C, unsigned NumIndexExprs)
Definition: Expr.cpp:3919
clang::UETT_AlignOf
Used for C&#39;s _Alignof and C++&#39;s alignof.
Definition: TypeTraits.h:101
clang::Expr::getBestDynamicClassType
const CXXRecordDecl * getBestDynamicClassType() const
For an expression of class type or pointer to class type, return the most derived class decl the expr...
Definition: Expr.cpp:62
clang::DesignatedInitExpr::getArrayRangeStart
Expr * getArrayRangeStart(const Designator &D) const
Definition: Expr.cpp:3967
clang::AtomicType
Definition: Type.h:5968
clang::ObjCMessageExpr::getMethodDecl
const ObjCMethodDecl * getMethodDecl() const
Definition: ExprObjC.h:1303
clang::Type::isVectorType
bool isVectorType() const
Definition: Type.h:6381
memcpy
__DEVICE__ void * memcpy(void *__a, const void *__b, size_t __c)
Definition: __clang_cuda_device_functions.h:1612
clang::RQ_RValue
An rvalue ref-qualifier was provided (&&).
Definition: Type.h:1366
clang::DesignatedInitExpr::ArrayOrRangeDesignator::LBracketLoc
unsigned LBracketLoc
The location of the &#39;[&#39; starting the array range designator.
Definition: Expr.h:4480
clang::Stmt::MemberExprBits
MemberExprBitfields MemberExprBits
Definition: Stmt.h:914
clang::InitListExpr::getArrayFiller
Expr * getArrayFiller()
If this initializer list initializes an array with more elements than there are initializers in the l...
Definition: Expr.h:4279
clang::isPrintable
LLVM_READONLY bool isPrintable(unsigned char c)
Return true if this character is an ASCII printable character; that is, a character that should take ...
Definition: CharInfo.h:140
clang::InitListExpr::sawArrayRangeDesignator
void sawArrayRangeDesignator(bool ARD=true)
Definition: Expr.h:4356
clang::ASTContext::hasSameUnqualifiedType
bool hasSameUnqualifiedType(QualType T1, QualType T2) const
Determine whether the given types are equivalent after cvr-qualifiers have been removed.
Definition: ASTContext.h:2293
clang::Type::isInstantiationDependentType
bool isInstantiationDependentType() const
Determine whether this type is an instantiation-dependent type, meaning that the type involves a temp...
Definition: Type.h:2085
clang::MultiVersionKind::None
clang::MemberExpr::Create
static MemberExpr * Create(const ASTContext &C, Expr *base, bool isarrow, SourceLocation OperatorLoc, NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateKWLoc, ValueDecl *memberdecl, DeclAccessPair founddecl, DeclarationNameInfo MemberNameInfo, const TemplateArgumentListInfo *targs, QualType ty, ExprValueKind VK, ExprObjectKind OK)
Definition: Expr.cpp:1539
clang::Stmt::EmptyShell
A placeholder type used to construct an empty shell of a type, that will be filled in later (e...
Definition: Stmt.h:976
clang::Expr::getExprLoc
SourceLocation getExprLoc() const LLVM_READONLY
getExprLoc - Return the preferred location for the arrow when diagnosing a problem with a generic exp...
Definition: Expr.cpp:215
clang::BinaryOperator::getLHS
Expr * getLHS() const
Definition: Expr.h:3327
clang::DeclAccessPair
A POD class for pairing a NamedDecl* with an access specifier.
Definition: DeclAccessPair.h:30
clang::ImplicitParamDecl
Definition: Decl.h:1486
clang::DeclarationNameLoc
DeclarationNameLoc - Additional source/type location info for a declaration name. ...
Definition: DeclarationName.h:651
clang::ASTContext::Allocate
void * Allocate(size_t Size, unsigned Align=8) const
Definition: ASTContext.h:669
clang::Stmt::PPCDoubleDouble
Definition: Stmt.h:357
clang::GenericSelectionExpr
Represents a C11 generic selection.
Definition: Expr.h:5010
clang::InitListExpr::getEndLoc
SourceLocation getEndLoc() const LLVM_READONLY
Definition: Expr.cpp:2111
clang::DesignatedInitExpr::getDesignatorsSourceRange
SourceRange getDesignatorsSourceRange() const
Definition: Expr.cpp:3935
clang::Qualifiers::Weak
Definition: Type.h:152
clang::QualType::stream
StreamedQualTypeHelper stream(const PrintingPolicy &Policy, const Twine &PlaceHolder=Twine(), unsigned Indentation=0) const
Definition: Type.h:1027
clang
Dataflow Directional Tag Classes.
Definition: CFGReachabilityAnalysis.h:22
clang::NestedNameSpecifierLoc::getNestedNameSpecifier
NestedNameSpecifier * getNestedNameSpecifier() const
Retrieve the nested-name-specifier to which this instance refers.
Definition: NestedNameSpecifier.h:268
clang::SourceLocation::isValid
bool isValid() const
Return true if this is a valid SourceLocation object.
Definition: SourceLocation.h:108
clang::InitListExpr::getBeginLoc
SourceLocation getBeginLoc() const LLVM_READONLY
Definition: Expr.cpp:2093
clang::PredefinedExpr
[C99 6.4.2.2] - A predefined identifier such as func.
Definition: Expr.h:1758
clang::UnaryOperatorKind
UnaryOperatorKind
Definition: OperationKinds.h:31
clang::DeclContext
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1262
clang::Expr::EvalResult
EvalResult is a struct with detailed info about an evaluated expression.
Definition: Expr.h:571
clang::arcmt::trans::hasSideEffects
bool hasSideEffects(Expr *E, ASTContext &Ctx)
Definition: Transforms.cpp:168
clang::CXXOperatorCallExpr::getOperator
OverloadedOperatorKind getOperator() const
Returns the kind of overloaded operator that this expression refers to.
Definition: ExprCXX.h:107
clang::OverloadedOperatorKind
OverloadedOperatorKind
Enumeration specifying the different kinds of C++ overloaded operators.
Definition: OperatorKinds.h:22
clang::Expr::getReferencedDeclOfCallee
Decl * getReferencedDeclOfCallee()
Definition: Expr.cpp:1342
clang::DesignatedInitExpr::FieldDesignator
A field designator, e.g., ".x".
Definition: Expr.h:4458
clang::ShuffleVectorExpr::setExprs
void setExprs(const ASTContext &C, ArrayRef< Expr *> Exprs)
Definition: Expr.cpp:3770
type
clang::NestedNameSpecifier::isDependent
bool isDependent() const
Whether this nested name specifier refers to a dependent type or not.
Definition: NestedNameSpecifier.cpp:203
clang::Decl::getAccess
AccessSpecifier getAccess() const
Definition: DeclBase.h:462
clang::Designator::ArrayRangeDesignator
Definition: Designator.h:40
clang::FunctionDecl::getTemplateInstantiationPattern
FunctionDecl * getTemplateInstantiationPattern() const
Retrieve the function declaration from which this function could be instantiated, if it is an instant...
Definition: Decl.cpp:3414
clang::CC_C
Definition: Specifiers.h:237
clang::Stmt::getStmtClass
StmtClass getStmtClass() const
Definition: Stmt.h:1029
clang::CastExpr::getCastKindName
const char * getCastKindName() const
Definition: Expr.h:3048
clang::CXXMethodDecl::getParent
const CXXRecordDecl * getParent() const
Returns the parent of this method declaration, which is the class in which this method is defined...
Definition: DeclCXX.h:2166
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bool isBooleanType() const
Definition: Type.h:6657
clang::Expr::NPCK_ZeroExpression
Expression is a Null pointer constant built from a zero integer expression that is not a simple...
Definition: Expr.h:695
clang::ASTVector::resize
void resize(const ASTContext &C, unsigned N, const T &NV)
Definition: ASTVector.h:342
clang::PseudoObjectExpr::Create
static PseudoObjectExpr * Create(const ASTContext &Context, Expr *syntactic, ArrayRef< Expr *> semantic, unsigned resultIndex)
Definition: Expr.cpp:4092
clang::Expr::setInstantiationDependent
void setInstantiationDependent(bool ID)
Set whether this expression is instantiation-dependent or not.
Definition: Expr.h:196
clang::ASTVector::const_iterator
const T * const_iterator
Definition: ASTVector.h:87
clang::Expr::NPCK_CXX11_nullptr
Expression is a C++11 nullptr.
Definition: Expr.h:701
clang::MemberPointerType
A pointer to member type per C++ 8.3.3 - Pointers to members.
Definition: Type.h:2756
clang::Expr::isIntegerConstantExpr
bool isIntegerConstantExpr(llvm::APSInt &Result, const ASTContext &Ctx, SourceLocation *Loc=nullptr, bool isEvaluated=true) const
isIntegerConstantExpr - Return true if this expression is a valid integer constant expression...
Definition: ExprConstant.cpp:11569
clang::ExtVectorElementExpr::getNumElements
unsigned getNumElements() const
getNumElements - Get the number of components being selected.
Definition: Expr.cpp:3686
clang::PseudoObjectExpr::semantics_begin
semantics_iterator semantics_begin()
Definition: Expr.h:5367
clang::StringLiteral::Ascii
Definition: Expr.h:1588
clang::DeclarationName::CXXConversionFunctionName
Definition: DeclarationName.h:209
clang::CallExpr::getCallReturnType
QualType getCallReturnType(const ASTContext &Ctx) const
getCallReturnType - Get the return type of the call expr.
Definition: Expr.cpp:1396
clang::ConstEvaluatedExprVisitor
ConstEvaluatedExprVisitor - This class visits &#39;const Expr *&#39;s.
Definition: EvaluatedExprVisitor.h:121
clang::ExplicitCastExpr
ExplicitCastExpr - An explicit cast written in the source code.
Definition: Expr.h:3190
clang::DeclarationNameInfo
DeclarationNameInfo - A collector data type for bundling together a DeclarationName and the correspnd...
Definition: DeclarationName.h:691
clang::DeclContext::specific_decl_iterator
specific_decl_iterator - Iterates over a subrange of declarations stored in a DeclContext, providing only those that are of type SpecificDecl (or a class derived from it).
Definition: DeclBase.h:2017
clang::Expr::IgnoreParenImpCasts
Expr * IgnoreParenImpCasts() LLVM_READONLY
IgnoreParenImpCasts - Ignore parentheses and implicit casts.
Definition: Expr.cpp:2693
clang::DesignatedInitExpr::getArrayRangeEnd
Expr * getArrayRangeEnd(const Designator &D) const
Definition: Expr.cpp:3973
clang::APIntStorage::getValue
llvm::APInt getValue() const
Definition: Expr.h:1292
clang::AtomicExpr::getNumSubExprs
unsigned getNumSubExprs() const
Definition: Expr.h:5498
clang::BlockPointerType
Pointer to a block type.
Definition: Type.h:2639
clang::GenericSelectionExpr::GenericSelectionExpr
GenericSelectionExpr(const ASTContext &Context, SourceLocation GenericLoc, Expr *ControllingExpr, ArrayRef< TypeSourceInfo *> AssocTypes, ArrayRef< Expr *> AssocExprs, SourceLocation DefaultLoc, SourceLocation RParenLoc, bool ContainsUnexpandedParameterPack, unsigned ResultIndex)
Definition: Expr.cpp:3778
clang::DesignatedInitUpdateExpr::getBeginLoc
SourceLocation getBeginLoc() const LLVM_READONLY
Definition: Expr.cpp:4017
clang::InitListExpr::isStringLiteralInit
bool isStringLiteralInit() const
Definition: Expr.cpp:2045
clang::DesignatedInitExpr::Designator::ArrayOrRange
struct ArrayOrRangeDesignator ArrayOrRange
An array or GNU array-range designator, e.g., "[9]" or "[10..15]".
Definition: Expr.h:4506
clang::ASTContext::getIntWidth
unsigned getIntWidth(QualType T) const
Definition: ASTContext.cpp:9152
clang::OO_None
Not an overloaded operator.
Definition: OperatorKinds.h:23
clang::Type::isIncompleteArrayType
bool isIncompleteArrayType() const
Definition: Type.h:6353
clang::DeclRefExpr::getNameInfo
DeclarationNameInfo getNameInfo() const
Definition: Expr.h:1118
clang::Expr::EvalStatus::HasSideEffects
bool HasSideEffects
Whether the evaluated expression has side effects.
Definition: Expr.h:544
clang::RecordType
A helper class that allows the use of isa/cast/dyncast to detect TagType objects of structs/unions/cl...
Definition: Type.h:4370
clang::TemplateArgumentLoc
Location wrapper for a TemplateArgument.
Definition: TemplateBase.h:450
clang::Qualifiers::empty
bool empty() const
Definition: Type.h:414
clang::CompoundStmt::body_empty
bool body_empty() const
Definition: Stmt.h:1268
clang::ArraySubscriptExpr
ArraySubscriptExpr - [C99 6.5.2.1] Array Subscripting.
Definition: Expr.h:2312
clang::Type::isIntegerType
bool isIntegerType() const
isIntegerType() does not include complex integers (a GCC extension).
Definition: Type.h:6578
clang::Expr::isConstantInitializer
bool isConstantInitializer(ASTContext &Ctx, bool ForRef, const Expr **Culprit=nullptr) const
isConstantInitializer - Returns true if this expression can be emitted to IR as a constant...
Definition: Expr.cpp:2894
clang::Decl::getAttr
T * getAttr() const
Definition: DeclBase.h:527
clang::CStyleCastExpr::Create
static CStyleCastExpr * Create(const ASTContext &Context, QualType T, ExprValueKind VK, CastKind K, Expr *Op, const CXXCastPath *BasePath, TypeSourceInfo *WrittenTy, SourceLocation L, SourceLocation R)
Definition: Expr.cpp:1865
clang::DesignatedInitUpdateExpr::getEndLoc
SourceLocation getEndLoc() const LLVM_READONLY
Definition: Expr.cpp:4021
clang::CUDAKernelCallExpr
Represents a call to a CUDA kernel function.
Definition: ExprCXX.h:219
clang::Type::isFunctionType
bool isFunctionType() const
Definition: Type.h:6292
clang::ImplicitCastExpr::CreateEmpty
static ImplicitCastExpr * CreateEmpty(const ASTContext &Context, unsigned PathSize)
Definition: Expr.cpp:1858
clang::Expr::IgnoreParenLValueCasts
Expr * IgnoreParenLValueCasts() LLVM_READONLY
Ignore parentheses and lvalue casts.
Definition: Expr.cpp:2650
clang::UnaryOperator::getOpcode
Opcode getOpcode() const
Definition: Expr.h:1921
clang::CXXConstructExpr::getArg
Expr * getArg(unsigned Arg)
Return the specified argument.
Definition: ExprCXX.h:1413
clang::CastExpr::getConversionFunction
NamedDecl * getConversionFunction() const
If this cast applies a user-defined conversion, retrieve the conversion function that it invokes...
Definition: Expr.cpp:1793
clang::Stmt::UnaryExprOrTypeTraitExprBits
UnaryExprOrTypeTraitExprBitfields UnaryExprOrTypeTraitExprBits
Definition: Stmt.h:911
clang::CXXBaseSpecifier
Represents a base class of a C++ class.
Definition: DeclCXX.h:192
clang::ASTVector::begin
iterator begin()
Definition: ASTVector.h:98
clang::ASTContext::getTypeSize
uint64_t getTypeSize(QualType T) const
Return the size of the specified (complete) type T, in bits.
Definition: ASTContext.h:2070
clang::ObjCIvarRefExpr
ObjCIvarRefExpr - A reference to an ObjC instance variable.
Definition: ExprObjC.h:513
clang::ASTContext::getCanonicalType
CanQualType getCanonicalType(QualType T) const
Return the canonical (structural) type corresponding to the specified potentially non-canonical type ...
Definition: ASTContext.h:2253
clang::Decl::specific_attrs
llvm::iterator_range< specific_attr_iterator< T > > specific_attrs() const
Definition: DeclBase.h:513
clang::CXXDefaultInitExpr
A use of a default initializer in a constructor or in aggregate initialization.
Definition: ExprCXX.h:1137
clang::TemplateArgumentList
A template argument list.
Definition: DeclTemplate.h:210
clang::CStyleCastExpr::CreateEmpty
static CStyleCastExpr * CreateEmpty(const ASTContext &Context, unsigned PathSize)
Definition: Expr.cpp:1880
skipTemporaryBindingsNoOpCastsAndParens
static const Expr * skipTemporaryBindingsNoOpCastsAndParens(const Expr *E)
Skip over any no-op casts and any temporary-binding expressions.
Definition: Expr.cpp:2774
clang::Expr::refersToGlobalRegisterVar
bool refersToGlobalRegisterVar() const
Returns whether this expression refers to a global register variable.
Definition: Expr.cpp:3668
clang::Expr::isUnusedResultAWarning
bool isUnusedResultAWarning(const Expr *&WarnExpr, SourceLocation &Loc, SourceRange &R1, SourceRange &R2, ASTContext &Ctx) const
isUnusedResultAWarning - Return true if this immediate expression should be warned about if the resul...
Definition: Expr.cpp:2156
clang::ASTVector::reserve
void reserve(const ASTContext &C, unsigned N)
Definition: ASTVector.h:174
DeclCXX.h
Defines the C++ Decl subclasses, other than those for templates (found in DeclTemplate.h) and friends (in DeclFriend.h).
clang::Expr::NPCK_ZeroLiteral
Expression is a Null pointer constant built from a literal zero.
Definition: Expr.h:698
clang::ASTContext::Deallocate
void Deallocate(void *Ptr) const
Definition: ASTContext.h:675
clang::MemberExpr
MemberExpr - [C99 6.5.2.3] Structure and Union Members.
Definition: Expr.h:2682
clang::FunctionType::getCallConv
CallingConv getCallConv() const
Definition: Type.h:3623
clang::StringLiteral::UTF8
Definition: Expr.h:1588
clang::CXXRecordDecl
Represents a C++ struct/union/class.
Definition: DeclCXX.h:300
clang::Type::isVoidType
bool isVoidType() const
Definition: Type.h:6544
clang::InitListExpr::isSyntacticForm
bool isSyntacticForm() const
Definition: Expr.h:4339
clang::ASTContext::getTypeInfo
TypeInfo getTypeInfo(const Type *T) const
Get the size and alignment of the specified complete type in bits.
Definition: ASTContext.cpp:1737
clang::FunctionDecl::getBuiltinID
unsigned getBuiltinID() const
Returns a value indicating whether this function corresponds to a builtin function.
Definition: Decl.cpp:2994
clang::UnaryExprOrTypeTraitExpr::children
child_range children()
Definition: Expr.cpp:4149
clang::OMPArraySectionExpr::getBaseOriginalType
static QualType getBaseOriginalType(const Expr *Base)
Return original type of the base expression for array section.
Definition: Expr.cpp:4257
clang::ChooseExpr
ChooseExpr - GNU builtin-in function __builtin_choose_expr.
Definition: Expr.h:3977
clang::Expr::hasAnyTypeDependentArguments
static bool hasAnyTypeDependentArguments(ArrayRef< Expr *> Exprs)
hasAnyTypeDependentArguments - Determines if any of the expressions in Exprs is type-dependent.
Definition: Expr.cpp:2886
RecordLayout.h
clang::CXXFunctionalCastExpr
Represents an explicit C++ type conversion that uses "functional" notation (C++ [expr.type.conv]).
Definition: ExprCXX.h:1519
clang::QualType::getQualifiers
Qualifiers getQualifiers() const
Retrieve the set of qualifiers applied to this type.
Definition: Type.h:6099
clang::SourceLocation::isInvalid
bool isInvalid() const
Definition: SourceLocation.h:109
clang::ConditionalOperator::getRHS
Expr * getRHS() const
Definition: Expr.h:3628
clang::AttrSyntax::C
clang::CallExpr::hasUnusedResultAttr
bool hasUnusedResultAttr(const ASTContext &Ctx) const
Returns true if this call expression should warn on unused results.
Definition: Expr.h:2631
clang::Expr::Classification::isPRValue
bool isPRValue() const
Definition: Expr.h:355
clang::ASTContext::BuiltinInfo
Builtin::Context & BuiltinInfo
Definition: ASTContext.h:568
clang::Expr::containsUnexpandedParameterPack
bool containsUnexpandedParameterPack() const
Whether this expression contains an unexpanded parameter pack (for C++11 variadic templates)...
Definition: Expr.h:214
clang::Expr::isRValue
bool isRValue() const
Definition: Expr.h:250
clang::ParenListExpr::CreateEmpty
static ParenListExpr * CreateEmpty(const ASTContext &Ctx, unsigned NumExprs)
Create an empty paren list.
Definition: Expr.cpp:4060
clang::StringLiteralParser
StringLiteralParser - This decodes string escape characters and performs wide string analysis and Tra...
Definition: LiteralSupport.h:206
Expr.h
clang::Stmt::x87DoubleExtended
Definition: Stmt.h:355
clang::CallExpr::setPreArg
void setPreArg(unsigned I, Stmt *PreArg)
Definition: Expr.h:2472
clang::Stmt::getSourceRange
SourceRange getSourceRange() const LLVM_READONLY
SourceLocation tokens are not useful in isolation - they are low level value objects created/interpre...
Definition: Stmt.cpp:276
clang::OMF_init
Definition: IdentifierTable.h:621
clang::Expr::isImplicitCXXThis
bool isImplicitCXXThis() const
Whether this expression is an implicit reference to &#39;this&#39; in C++.
Definition: Expr.cpp:2842
clang::StringLiteral
StringLiteral - This represents a string literal expression, e.g.
Definition: Expr.h:1566
TargetInfo.h
Defines the clang::TargetInfo interface.
clang::CallExpr
CallExpr - Represents a function call (C99 6.5.2.2, C++ [expr.call]).
Definition: Expr.h:2396
clang::CallExpr::isBuiltinAssumeFalse
bool isBuiltinAssumeFalse(const ASTContext &Ctx) const
Return true if this is a call to __assume() or __builtin_assume() with a non-value-dependent constant...
Definition: Expr.cpp:3067
clang::DesignatedInitExpr::getDesignator
Designator * getDesignator(unsigned Idx)
Definition: Expr.h:4630
clang::NamedDecl::getName
StringRef getName() const
Get the name of identifier for this declaration as a StringRef.
Definition: Decl.h:276
clang::InitListExpr::reserveInits
void reserveInits(const ASTContext &C, unsigned NumInits)
Reserve space for some number of initializers.
Definition: Expr.cpp:2014
clang::TypeInfo::Width
uint64_t Width
Definition: ASTContext.h:144
getKind
static Decl::Kind getKind(const Decl *D)
Definition: DeclBase.cpp:954
clang::SC_Register
Definition: Specifiers.h:215
clang::MemberExprNameQualifier::FoundDecl
DeclAccessPair FoundDecl
The DeclAccessPair through which the MemberDecl was found due to name qualifiers. ...
Definition: Expr.h:2677
clang::Type::isDependentType
bool isDependentType() const
Whether this type is a dependent type, meaning that its definition somehow depends on a template para...
Definition: Type.h:2079
clang::Expr::isEvaluatable
bool isEvaluatable(const ASTContext &Ctx, SideEffectsKind AllowSideEffects=SE_NoSideEffects) const
isEvaluatable - Call EvaluateAsRValue to see if this expression can be constant folded without side-e...
Definition: ExprConstant.cpp:11040
clang::CallExpr::ADLCallKind
ADLCallKind
Definition: Expr.h:2443
clang::ASTVector::const_reverse_iterator
std::reverse_iterator< const_iterator > const_reverse_iterator
Definition: ASTVector.h:89
clang::MemberExpr::getBeginLoc
SourceLocation getBeginLoc() const LLVM_READONLY
Definition: Expr.cpp:1600
clang::DeclRefExpr
A reference to a declared variable, function, enum, etc.
Definition: Expr.h:1041
clang::TagDecl::isUnion
bool isUnion() const
Definition: Decl.h:3252
clang::BinaryOperator::getRHS
Expr * getRHS() const
Definition: Expr.h:3329
clang::Type::isPointerType
bool isPointerType() const
Definition: Type.h:6296
clang::Stmt::CallExprBits
CallExprBitfields CallExprBits
Definition: Stmt.h:913
clang::BinaryOperator::getOverloadedOperator
static OverloadedOperatorKind getOverloadedOperator(Opcode Opc)
Retrieve the overloaded operator kind that corresponds to the given binary opcode.
Definition: Expr.cpp:1935
clang::InitListExpr::getInitializedFieldInUnion
FieldDecl * getInitializedFieldInUnion()
If this initializes a union, specifies which field in the union to initialize.
Definition: Expr.h:4297
clang::Expr::isDefaultArgument
bool isDefaultArgument() const
Determine whether this expression is a default function argument.
Definition: Expr.cpp:2761
clang::Expr::isOBJCGCCandidate
bool isOBJCGCCandidate(ASTContext &Ctx) const
isOBJCGCCandidate - Return true if this expression may be used in a read/ write barrier.
Definition: Expr.cpp:2491
clang::ValueDecl::getType
QualType getType() const
Definition: Decl.h:648
true
#define true
Definition: stdbool.h:32
clang::VK_LValue
An l-value expression is a reference to an object with independent storage.
Definition: Specifiers.h:114
clang::CXXConstructExpr::getNumArgs
unsigned getNumArgs() const
Return the number of arguments to the constructor call.
Definition: ExprCXX.h:1410
clang::SourceRange
A trivial tuple used to represent a source range.
Definition: SourceLocation.h:198
clang::UnaryOperator::getOpcodeStr
static StringRef getOpcodeStr(Opcode Op)
getOpcodeStr - Turn an Opcode enum value into the punctuation char it corresponds to...
Definition: Expr.cpp:1193
clang::CallExpr::getBeginLoc
SourceLocation getBeginLoc() const LLVM_READONLY
Definition: Expr.cpp:1428
clang::NamedDecl
This represents a decl that may have a name.
Definition: Decl.h:249
clang::OffsetOfExpr
OffsetOfExpr - [C99 7.17] - This represents an expression of the form offsetof(record-type, member-designator).
Definition: Expr.h:2117
clang::VariableArrayType
Represents a C array with a specified size that is not an integer-constant-expression.
Definition: Type.h:2971
clang::DesignatedInitExpr::Designator::getEndLoc
SourceLocation getEndLoc() const LLVM_READONLY
Definition: Expr.h:4601
clang::ExtVectorType::getAccessorIdx
static int getAccessorIdx(char c, bool isNumericAccessor)
Definition: Type.h:3332
clang::AtomicExpr::getValueType
QualType getValueType() const
Definition: Expr.cpp:4250
clang::CallExpr::CreateEmpty
static CallExpr * CreateEmpty(const ASTContext &Ctx, unsigned NumArgs, EmptyShell Empty)
Create an empty call expression, for deserialization.
Definition: Expr.cpp:1305
clang::FloatingLiteral::getValueAsApproximateDouble
double getValueAsApproximateDouble() const
getValueAsApproximateDouble - This returns the value as an inaccurate double.
Definition: Expr.cpp:896
clang::ObjCMessageExpr::isInstanceMessage
bool isInstanceMessage() const
Determine whether this is an instance message to either a computed object or to super.
Definition: ExprObjC.h:1195
clang::CallExpr::getCalleeDecl
Decl * getCalleeDecl()
Definition: Expr.h:2526
clang::FunctionDecl::getNumParams
unsigned getNumParams() const
Return the number of parameters this function must have based on its FunctionType.
Definition: Decl.cpp:3055
clang::Qualifiers::removeAddressSpace
void removeAddressSpace()
Definition: Type.h:377
clang::ASTContext::getLangOpts
const LangOptions & getLangOpts() const
Definition: ASTContext.h:707
clang::ObjCCategoryImplDecl
ObjCCategoryImplDecl - An object of this class encapsulates a category @implementation declaration...
Definition: DeclObjC.h:2499
clang::DesignatedInitExpr::Designator::getFieldName
IdentifierInfo * getFieldName() const
Definition: Expr.cpp:3833
clang::SourceManager
This class handles loading and caching of source files into memory.
Definition: SourceManager.h:582
clang::InitListExpr::getSyntacticForm
InitListExpr * getSyntacticForm() const
Definition: Expr.h:4342
Builtins.h
Defines enum values for all the target-independent builtin functions.
clang::Expr::NullPointerConstantKind
NullPointerConstantKind
Enumeration used to describe the kind of Null pointer constant returned from isNullPointerConstant()...
Definition: Expr.h:686
clang::Attr
Attr - This represents one attribute.
Definition: Attr.h:44
clang::TypeSourceInfo::getType
QualType getType() const
Return the type wrapped by this type source info.
Definition: Decl.h:98
clang::SourceManager::getDecomposedLoc
std::pair< FileID, unsigned > getDecomposedLoc(SourceLocation Loc) const
Decompose the specified location into a raw FileID + Offset pair.
Definition: SourceManager.h:1196
clang::Expr::IgnoreParens
Expr * IgnoreParens() LLVM_READONLY
IgnoreParens - Ignore parentheses.
Definition: Expr.cpp:2560
clang::DesignatedInitExpr::Designator::getSourceRange
SourceRange getSourceRange() const LLVM_READONLY
Definition: Expr.h:4604