Bug Summary

File:tools/clang/lib/AST/DeclBase.cpp
Location:line 1637, column 45
Description:Potential memory leak

Annotated Source Code

1//===--- DeclBase.cpp - Declaration 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 Decl and DeclContext classes.
11//
12//===----------------------------------------------------------------------===//
13
14#include "clang/AST/DeclBase.h"
15#include "clang/AST/ASTContext.h"
16#include "clang/AST/ASTMutationListener.h"
17#include "clang/AST/Attr.h"
18#include "clang/AST/Decl.h"
19#include "clang/AST/DeclCXX.h"
20#include "clang/AST/DeclContextInternals.h"
21#include "clang/AST/DeclFriend.h"
22#include "clang/AST/DeclObjC.h"
23#include "clang/AST/DeclOpenMP.h"
24#include "clang/AST/DeclTemplate.h"
25#include "clang/AST/DependentDiagnostic.h"
26#include "clang/AST/ExternalASTSource.h"
27#include "clang/AST/Stmt.h"
28#include "clang/AST/StmtCXX.h"
29#include "clang/AST/Type.h"
30#include "clang/Basic/TargetInfo.h"
31#include "llvm/ADT/DenseMap.h"
32#include "llvm/Support/raw_ostream.h"
33#include <algorithm>
34using namespace clang;
35
36//===----------------------------------------------------------------------===//
37// Statistics
38//===----------------------------------------------------------------------===//
39
40#define DECL(DERIVED, BASE) static int n##DERIVED##s = 0;
41#define ABSTRACT_DECL(DECL)
42#include "clang/AST/DeclNodes.inc"
43
44void Decl::updateOutOfDate(IdentifierInfo &II) const {
45 getASTContext().getExternalSource()->updateOutOfDateIdentifier(II);
46}
47
48void *Decl::operator new(std::size_t Size, const ASTContext &Context,
49 unsigned ID, std::size_t Extra) {
50 // Allocate an extra 8 bytes worth of storage, which ensures that the
51 // resulting pointer will still be 8-byte aligned.
52 void *Start = Context.Allocate(Size + Extra + 8);
53 void *Result = (char*)Start + 8;
54
55 unsigned *PrefixPtr = (unsigned *)Result - 2;
56
57 // Zero out the first 4 bytes; this is used to store the owning module ID.
58 PrefixPtr[0] = 0;
59
60 // Store the global declaration ID in the second 4 bytes.
61 PrefixPtr[1] = ID;
62
63 return Result;
64}
65
66void *Decl::operator new(std::size_t Size, const ASTContext &Ctx,
67 DeclContext *Parent, std::size_t Extra) {
68 assert(!Parent || &Parent->getParentASTContext() == &Ctx)((!Parent || &Parent->getParentASTContext() == &Ctx
) ? static_cast<void> (0) : __assert_fail ("!Parent || &Parent->getParentASTContext() == &Ctx"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 68, __PRETTY_FUNCTION__));
69 return ::operator new(Size + Extra, Ctx);
70}
71
72Module *Decl::getOwningModuleSlow() const {
73 assert(isFromASTFile() && "Not from AST file?")((isFromASTFile() && "Not from AST file?") ? static_cast
<void> (0) : __assert_fail ("isFromASTFile() && \"Not from AST file?\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 73, __PRETTY_FUNCTION__));
74 return getASTContext().getExternalSource()->getModule(getOwningModuleID());
75}
76
77const char *Decl::getDeclKindName() const {
78 switch (DeclKind) {
79 default: llvm_unreachable("Declaration not in DeclNodes.inc!")::llvm::llvm_unreachable_internal("Declaration not in DeclNodes.inc!"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 79);
80#define DECL(DERIVED, BASE) case DERIVED: return #DERIVED;
81#define ABSTRACT_DECL(DECL)
82#include "clang/AST/DeclNodes.inc"
83 }
84}
85
86void Decl::setInvalidDecl(bool Invalid) {
87 InvalidDecl = Invalid;
88 assert(!isa<TagDecl>(this) || !cast<TagDecl>(this)->isCompleteDefinition())((!isa<TagDecl>(this) || !cast<TagDecl>(this)->
isCompleteDefinition()) ? static_cast<void> (0) : __assert_fail
("!isa<TagDecl>(this) || !cast<TagDecl>(this)->isCompleteDefinition()"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 88, __PRETTY_FUNCTION__));
89 if (Invalid && !isa<ParmVarDecl>(this)) {
90 // Defensive maneuver for ill-formed code: we're likely not to make it to
91 // a point where we set the access specifier, so default it to "public"
92 // to avoid triggering asserts elsewhere in the front end.
93 setAccess(AS_public);
94 }
95}
96
97const char *DeclContext::getDeclKindName() const {
98 switch (DeclKind) {
99 default: llvm_unreachable("Declaration context not in DeclNodes.inc!")::llvm::llvm_unreachable_internal("Declaration context not in DeclNodes.inc!"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 99);
100#define DECL(DERIVED, BASE) case Decl::DERIVED: return #DERIVED;
101#define ABSTRACT_DECL(DECL)
102#include "clang/AST/DeclNodes.inc"
103 }
104}
105
106bool Decl::StatisticsEnabled = false;
107void Decl::EnableStatistics() {
108 StatisticsEnabled = true;
109}
110
111void Decl::PrintStats() {
112 llvm::errs() << "\n*** Decl Stats:\n";
113
114 int totalDecls = 0;
115#define DECL(DERIVED, BASE) totalDecls += n##DERIVED##s;
116#define ABSTRACT_DECL(DECL)
117#include "clang/AST/DeclNodes.inc"
118 llvm::errs() << " " << totalDecls << " decls total.\n";
119
120 int totalBytes = 0;
121#define DECL(DERIVED, BASE) \
122 if (n##DERIVED##s > 0) { \
123 totalBytes += (int)(n##DERIVED##s * sizeof(DERIVED##Decl)); \
124 llvm::errs() << " " << n##DERIVED##s << " " #DERIVED " decls, " \
125 << sizeof(DERIVED##Decl) << " each (" \
126 << n##DERIVED##s * sizeof(DERIVED##Decl) \
127 << " bytes)\n"; \
128 }
129#define ABSTRACT_DECL(DECL)
130#include "clang/AST/DeclNodes.inc"
131
132 llvm::errs() << "Total bytes = " << totalBytes << "\n";
133}
134
135void Decl::add(Kind k) {
136 switch (k) {
137#define DECL(DERIVED, BASE) case DERIVED: ++n##DERIVED##s; break;
138#define ABSTRACT_DECL(DECL)
139#include "clang/AST/DeclNodes.inc"
140 }
141}
142
143bool Decl::isTemplateParameterPack() const {
144 if (const TemplateTypeParmDecl *TTP = dyn_cast<TemplateTypeParmDecl>(this))
145 return TTP->isParameterPack();
146 if (const NonTypeTemplateParmDecl *NTTP
147 = dyn_cast<NonTypeTemplateParmDecl>(this))
148 return NTTP->isParameterPack();
149 if (const TemplateTemplateParmDecl *TTP
150 = dyn_cast<TemplateTemplateParmDecl>(this))
151 return TTP->isParameterPack();
152 return false;
153}
154
155bool Decl::isParameterPack() const {
156 if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(this))
157 return Parm->isParameterPack();
158
159 return isTemplateParameterPack();
160}
161
162FunctionDecl *Decl::getAsFunction() {
163 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(this))
164 return FD;
165 if (const FunctionTemplateDecl *FTD = dyn_cast<FunctionTemplateDecl>(this))
166 return FTD->getTemplatedDecl();
167 return nullptr;
168}
169
170bool Decl::isTemplateDecl() const {
171 return isa<TemplateDecl>(this);
172}
173
174const DeclContext *Decl::getParentFunctionOrMethod() const {
175 for (const DeclContext *DC = getDeclContext();
176 DC && !DC->isTranslationUnit() && !DC->isNamespace();
177 DC = DC->getParent())
178 if (DC->isFunctionOrMethod())
179 return DC;
180
181 return nullptr;
182}
183
184
185//===----------------------------------------------------------------------===//
186// PrettyStackTraceDecl Implementation
187//===----------------------------------------------------------------------===//
188
189void PrettyStackTraceDecl::print(raw_ostream &OS) const {
190 SourceLocation TheLoc = Loc;
191 if (TheLoc.isInvalid() && TheDecl)
192 TheLoc = TheDecl->getLocation();
193
194 if (TheLoc.isValid()) {
195 TheLoc.print(OS, SM);
196 OS << ": ";
197 }
198
199 OS << Message;
200
201 if (const NamedDecl *DN = dyn_cast_or_null<NamedDecl>(TheDecl)) {
202 OS << " '";
203 DN->printQualifiedName(OS);
204 OS << '\'';
205 }
206 OS << '\n';
207}
208
209//===----------------------------------------------------------------------===//
210// Decl Implementation
211//===----------------------------------------------------------------------===//
212
213// Out-of-line virtual method providing a home for Decl.
214Decl::~Decl() { }
215
216void Decl::setDeclContext(DeclContext *DC) {
217 DeclCtx = DC;
218}
219
220void Decl::setLexicalDeclContext(DeclContext *DC) {
221 if (DC == getLexicalDeclContext())
222 return;
223
224 if (isInSemaDC()) {
225 setDeclContextsImpl(getDeclContext(), DC, getASTContext());
226 } else {
227 getMultipleDC()->LexicalDC = DC;
228 }
229}
230
231void Decl::setDeclContextsImpl(DeclContext *SemaDC, DeclContext *LexicalDC,
232 ASTContext &Ctx) {
233 if (SemaDC == LexicalDC) {
234 DeclCtx = SemaDC;
235 } else {
236 Decl::MultipleDC *MDC = new (Ctx) Decl::MultipleDC();
237 MDC->SemanticDC = SemaDC;
238 MDC->LexicalDC = LexicalDC;
239 DeclCtx = MDC;
240 }
241}
242
243bool Decl::isInAnonymousNamespace() const {
244 const DeclContext *DC = getDeclContext();
245 do {
246 if (const NamespaceDecl *ND = dyn_cast<NamespaceDecl>(DC))
247 if (ND->isAnonymousNamespace())
248 return true;
249 } while ((DC = DC->getParent()));
250
251 return false;
252}
253
254bool Decl::isInStdNamespace() const {
255 return getDeclContext()->isStdNamespace();
256}
257
258TranslationUnitDecl *Decl::getTranslationUnitDecl() {
259 if (TranslationUnitDecl *TUD = dyn_cast<TranslationUnitDecl>(this))
260 return TUD;
261
262 DeclContext *DC = getDeclContext();
263 assert(DC && "This decl is not contained in a translation unit!")((DC && "This decl is not contained in a translation unit!"
) ? static_cast<void> (0) : __assert_fail ("DC && \"This decl is not contained in a translation unit!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 263, __PRETTY_FUNCTION__));
264
265 while (!DC->isTranslationUnit()) {
266 DC = DC->getParent();
267 assert(DC && "This decl is not contained in a translation unit!")((DC && "This decl is not contained in a translation unit!"
) ? static_cast<void> (0) : __assert_fail ("DC && \"This decl is not contained in a translation unit!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 267, __PRETTY_FUNCTION__));
268 }
269
270 return cast<TranslationUnitDecl>(DC);
271}
272
273ASTContext &Decl::getASTContext() const {
274 return getTranslationUnitDecl()->getASTContext();
275}
276
277ASTMutationListener *Decl::getASTMutationListener() const {
278 return getASTContext().getASTMutationListener();
279}
280
281unsigned Decl::getMaxAlignment() const {
282 if (!hasAttrs())
283 return 0;
284
285 unsigned Align = 0;
286 const AttrVec &V = getAttrs();
287 ASTContext &Ctx = getASTContext();
288 specific_attr_iterator<AlignedAttr> I(V.begin()), E(V.end());
289 for (; I != E; ++I)
290 Align = std::max(Align, I->getAlignment(Ctx));
291 return Align;
292}
293
294bool Decl::isUsed(bool CheckUsedAttr) const {
295 if (Used)
296 return true;
297
298 // Check for used attribute.
299 if (CheckUsedAttr && hasAttr<UsedAttr>())
300 return true;
301
302 return false;
303}
304
305void Decl::markUsed(ASTContext &C) {
306 if (Used)
307 return;
308
309 if (C.getASTMutationListener())
310 C.getASTMutationListener()->DeclarationMarkedUsed(this);
311
312 Used = true;
313}
314
315bool Decl::isReferenced() const {
316 if (Referenced)
317 return true;
318
319 // Check redeclarations.
320 for (auto I : redecls())
321 if (I->Referenced)
322 return true;
323
324 return false;
325}
326
327/// \brief Determine the availability of the given declaration based on
328/// the target platform.
329///
330/// When it returns an availability result other than \c AR_Available,
331/// if the \p Message parameter is non-NULL, it will be set to a
332/// string describing why the entity is unavailable.
333///
334/// FIXME: Make these strings localizable, since they end up in
335/// diagnostics.
336static AvailabilityResult CheckAvailability(ASTContext &Context,
337 const AvailabilityAttr *A,
338 std::string *Message) {
339 StringRef TargetPlatform = Context.getTargetInfo().getPlatformName();
340 StringRef PrettyPlatformName
341 = AvailabilityAttr::getPrettyPlatformName(TargetPlatform);
342 if (PrettyPlatformName.empty())
343 PrettyPlatformName = TargetPlatform;
344
345 VersionTuple TargetMinVersion = Context.getTargetInfo().getPlatformMinVersion();
346 if (TargetMinVersion.empty())
347 return AR_Available;
348
349 // Match the platform name.
350 if (A->getPlatform()->getName() != TargetPlatform)
351 return AR_Available;
352
353 std::string HintMessage;
354 if (!A->getMessage().empty()) {
355 HintMessage = " - ";
356 HintMessage += A->getMessage();
357 }
358
359 // Make sure that this declaration has not been marked 'unavailable'.
360 if (A->getUnavailable()) {
361 if (Message) {
362 Message->clear();
363 llvm::raw_string_ostream Out(*Message);
364 Out << "not available on " << PrettyPlatformName
365 << HintMessage;
366 }
367
368 return AR_Unavailable;
369 }
370
371 // Make sure that this declaration has already been introduced.
372 if (!A->getIntroduced().empty() &&
373 TargetMinVersion < A->getIntroduced()) {
374 if (Message) {
375 Message->clear();
376 llvm::raw_string_ostream Out(*Message);
377 VersionTuple VTI(A->getIntroduced());
378 VTI.UseDotAsSeparator();
379 Out << "introduced in " << PrettyPlatformName << ' '
380 << VTI << HintMessage;
381 }
382
383 return AR_NotYetIntroduced;
384 }
385
386 // Make sure that this declaration hasn't been obsoleted.
387 if (!A->getObsoleted().empty() && TargetMinVersion >= A->getObsoleted()) {
388 if (Message) {
389 Message->clear();
390 llvm::raw_string_ostream Out(*Message);
391 VersionTuple VTO(A->getObsoleted());
392 VTO.UseDotAsSeparator();
393 Out << "obsoleted in " << PrettyPlatformName << ' '
394 << VTO << HintMessage;
395 }
396
397 return AR_Unavailable;
398 }
399
400 // Make sure that this declaration hasn't been deprecated.
401 if (!A->getDeprecated().empty() && TargetMinVersion >= A->getDeprecated()) {
402 if (Message) {
403 Message->clear();
404 llvm::raw_string_ostream Out(*Message);
405 VersionTuple VTD(A->getDeprecated());
406 VTD.UseDotAsSeparator();
407 Out << "first deprecated in " << PrettyPlatformName << ' '
408 << VTD << HintMessage;
409 }
410
411 return AR_Deprecated;
412 }
413
414 return AR_Available;
415}
416
417AvailabilityResult Decl::getAvailability(std::string *Message) const {
418 AvailabilityResult Result = AR_Available;
419 std::string ResultMessage;
420
421 for (const auto *A : attrs()) {
422 if (const auto *Deprecated = dyn_cast<DeprecatedAttr>(A)) {
423 if (Result >= AR_Deprecated)
424 continue;
425
426 if (Message)
427 ResultMessage = Deprecated->getMessage();
428
429 Result = AR_Deprecated;
430 continue;
431 }
432
433 if (const auto *Unavailable = dyn_cast<UnavailableAttr>(A)) {
434 if (Message)
435 *Message = Unavailable->getMessage();
436 return AR_Unavailable;
437 }
438
439 if (const auto *Availability = dyn_cast<AvailabilityAttr>(A)) {
440 AvailabilityResult AR = CheckAvailability(getASTContext(), Availability,
441 Message);
442
443 if (AR == AR_Unavailable)
444 return AR_Unavailable;
445
446 if (AR > Result) {
447 Result = AR;
448 if (Message)
449 ResultMessage.swap(*Message);
450 }
451 continue;
452 }
453 }
454
455 if (Message)
456 Message->swap(ResultMessage);
457 return Result;
458}
459
460bool Decl::canBeWeakImported(bool &IsDefinition) const {
461 IsDefinition = false;
462
463 // Variables, if they aren't definitions.
464 if (const VarDecl *Var = dyn_cast<VarDecl>(this)) {
465 if (Var->isThisDeclarationADefinition()) {
466 IsDefinition = true;
467 return false;
468 }
469 return true;
470
471 // Functions, if they aren't definitions.
472 } else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(this)) {
473 if (FD->hasBody()) {
474 IsDefinition = true;
475 return false;
476 }
477 return true;
478
479 // Objective-C classes, if this is the non-fragile runtime.
480 } else if (isa<ObjCInterfaceDecl>(this) &&
481 getASTContext().getLangOpts().ObjCRuntime.hasWeakClassImport()) {
482 return true;
483
484 // Nothing else.
485 } else {
486 return false;
487 }
488}
489
490bool Decl::isWeakImported() const {
491 bool IsDefinition;
492 if (!canBeWeakImported(IsDefinition))
493 return false;
494
495 for (const auto *A : attrs()) {
496 if (isa<WeakImportAttr>(A))
497 return true;
498
499 if (const auto *Availability = dyn_cast<AvailabilityAttr>(A)) {
500 if (CheckAvailability(getASTContext(), Availability,
501 nullptr) == AR_NotYetIntroduced)
502 return true;
503 }
504 }
505
506 return false;
507}
508
509unsigned Decl::getIdentifierNamespaceForKind(Kind DeclKind) {
510 switch (DeclKind) {
511 case Function:
512 case CXXMethod:
513 case CXXConstructor:
514 case CXXDestructor:
515 case CXXConversion:
516 case EnumConstant:
517 case Var:
518 case ImplicitParam:
519 case ParmVar:
520 case NonTypeTemplateParm:
521 case ObjCMethod:
522 case ObjCProperty:
523 case MSProperty:
524 return IDNS_Ordinary;
525 case Label:
526 return IDNS_Label;
527 case IndirectField:
528 return IDNS_Ordinary | IDNS_Member;
529
530 case ObjCCompatibleAlias:
531 case ObjCInterface:
532 return IDNS_Ordinary | IDNS_Type;
533
534 case Typedef:
535 case TypeAlias:
536 case TypeAliasTemplate:
537 case UnresolvedUsingTypename:
538 case TemplateTypeParm:
539 return IDNS_Ordinary | IDNS_Type;
540
541 case UsingShadow:
542 return 0; // we'll actually overwrite this later
543
544 case UnresolvedUsingValue:
545 return IDNS_Ordinary | IDNS_Using;
546
547 case Using:
548 return IDNS_Using;
549
550 case ObjCProtocol:
551 return IDNS_ObjCProtocol;
552
553 case Field:
554 case ObjCAtDefsField:
555 case ObjCIvar:
556 return IDNS_Member;
557
558 case Record:
559 case CXXRecord:
560 case Enum:
561 return IDNS_Tag | IDNS_Type;
562
563 case Namespace:
564 case NamespaceAlias:
565 return IDNS_Namespace;
566
567 case FunctionTemplate:
568 case VarTemplate:
569 return IDNS_Ordinary;
570
571 case ClassTemplate:
572 case TemplateTemplateParm:
573 return IDNS_Ordinary | IDNS_Tag | IDNS_Type;
574
575 // Never have names.
576 case Friend:
577 case FriendTemplate:
578 case AccessSpec:
579 case LinkageSpec:
580 case FileScopeAsm:
581 case StaticAssert:
582 case ObjCPropertyImpl:
583 case Block:
584 case Captured:
585 case TranslationUnit:
586
587 case UsingDirective:
588 case ClassTemplateSpecialization:
589 case ClassTemplatePartialSpecialization:
590 case ClassScopeFunctionSpecialization:
591 case VarTemplateSpecialization:
592 case VarTemplatePartialSpecialization:
593 case ObjCImplementation:
594 case ObjCCategory:
595 case ObjCCategoryImpl:
596 case Import:
597 case OMPThreadPrivate:
598 case Empty:
599 // Never looked up by name.
600 return 0;
601 }
602
603 llvm_unreachable("Invalid DeclKind!")::llvm::llvm_unreachable_internal("Invalid DeclKind!", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 603);
604}
605
606void Decl::setAttrsImpl(const AttrVec &attrs, ASTContext &Ctx) {
607 assert(!HasAttrs && "Decl already contains attrs.")((!HasAttrs && "Decl already contains attrs.") ? static_cast
<void> (0) : __assert_fail ("!HasAttrs && \"Decl already contains attrs.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 607, __PRETTY_FUNCTION__));
608
609 AttrVec &AttrBlank = Ctx.getDeclAttrs(this);
610 assert(AttrBlank.empty() && "HasAttrs was wrong?")((AttrBlank.empty() && "HasAttrs was wrong?") ? static_cast
<void> (0) : __assert_fail ("AttrBlank.empty() && \"HasAttrs was wrong?\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 610, __PRETTY_FUNCTION__));
611
612 AttrBlank = attrs;
613 HasAttrs = true;
614}
615
616void Decl::dropAttrs() {
617 if (!HasAttrs) return;
618
619 HasAttrs = false;
620 getASTContext().eraseDeclAttrs(this);
621}
622
623const AttrVec &Decl::getAttrs() const {
624 assert(HasAttrs && "No attrs to get!")((HasAttrs && "No attrs to get!") ? static_cast<void
> (0) : __assert_fail ("HasAttrs && \"No attrs to get!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 624, __PRETTY_FUNCTION__));
625 return getASTContext().getDeclAttrs(this);
626}
627
628Decl *Decl::castFromDeclContext (const DeclContext *D) {
629 Decl::Kind DK = D->getDeclKind();
630 switch(DK) {
631#define DECL(NAME, BASE)
632#define DECL_CONTEXT(NAME) \
633 case Decl::NAME: \
634 return static_cast<NAME##Decl*>(const_cast<DeclContext*>(D));
635#define DECL_CONTEXT_BASE(NAME)
636#include "clang/AST/DeclNodes.inc"
637 default:
638#define DECL(NAME, BASE)
639#define DECL_CONTEXT_BASE(NAME) \
640 if (DK >= first##NAME && DK <= last##NAME) \
641 return static_cast<NAME##Decl*>(const_cast<DeclContext*>(D));
642#include "clang/AST/DeclNodes.inc"
643 llvm_unreachable("a decl that inherits DeclContext isn't handled")::llvm::llvm_unreachable_internal("a decl that inherits DeclContext isn't handled"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 643);
644 }
645}
646
647DeclContext *Decl::castToDeclContext(const Decl *D) {
648 Decl::Kind DK = D->getKind();
649 switch(DK) {
650#define DECL(NAME, BASE)
651#define DECL_CONTEXT(NAME) \
652 case Decl::NAME: \
653 return static_cast<NAME##Decl*>(const_cast<Decl*>(D));
654#define DECL_CONTEXT_BASE(NAME)
655#include "clang/AST/DeclNodes.inc"
656 default:
657#define DECL(NAME, BASE)
658#define DECL_CONTEXT_BASE(NAME) \
659 if (DK >= first##NAME && DK <= last##NAME) \
660 return static_cast<NAME##Decl*>(const_cast<Decl*>(D));
661#include "clang/AST/DeclNodes.inc"
662 llvm_unreachable("a decl that inherits DeclContext isn't handled")::llvm::llvm_unreachable_internal("a decl that inherits DeclContext isn't handled"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 662);
663 }
664}
665
666SourceLocation Decl::getBodyRBrace() const {
667 // Special handling of FunctionDecl to avoid de-serializing the body from PCH.
668 // FunctionDecl stores EndRangeLoc for this purpose.
669 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(this)) {
670 const FunctionDecl *Definition;
671 if (FD->hasBody(Definition))
672 return Definition->getSourceRange().getEnd();
673 return SourceLocation();
674 }
675
676 if (Stmt *Body = getBody())
677 return Body->getSourceRange().getEnd();
678
679 return SourceLocation();
680}
681
682bool Decl::AccessDeclContextSanity() const {
683#ifndef NDEBUG
684 // Suppress this check if any of the following hold:
685 // 1. this is the translation unit (and thus has no parent)
686 // 2. this is a template parameter (and thus doesn't belong to its context)
687 // 3. this is a non-type template parameter
688 // 4. the context is not a record
689 // 5. it's invalid
690 // 6. it's a C++0x static_assert.
691 if (isa<TranslationUnitDecl>(this) ||
692 isa<TemplateTypeParmDecl>(this) ||
693 isa<NonTypeTemplateParmDecl>(this) ||
694 !isa<CXXRecordDecl>(getDeclContext()) ||
695 isInvalidDecl() ||
696 isa<StaticAssertDecl>(this) ||
697 // FIXME: a ParmVarDecl can have ClassTemplateSpecialization
698 // as DeclContext (?).
699 isa<ParmVarDecl>(this) ||
700 // FIXME: a ClassTemplateSpecialization or CXXRecordDecl can have
701 // AS_none as access specifier.
702 isa<CXXRecordDecl>(this) ||
703 isa<ClassScopeFunctionSpecializationDecl>(this))
704 return true;
705
706 assert(Access != AS_none &&((Access != AS_none && "Access specifier is AS_none inside a record decl"
) ? static_cast<void> (0) : __assert_fail ("Access != AS_none && \"Access specifier is AS_none inside a record decl\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 707, __PRETTY_FUNCTION__))
707 "Access specifier is AS_none inside a record decl")((Access != AS_none && "Access specifier is AS_none inside a record decl"
) ? static_cast<void> (0) : __assert_fail ("Access != AS_none && \"Access specifier is AS_none inside a record decl\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 707, __PRETTY_FUNCTION__));
708#endif
709 return true;
710}
711
712static Decl::Kind getKind(const Decl *D) { return D->getKind(); }
713static Decl::Kind getKind(const DeclContext *DC) { return DC->getDeclKind(); }
714
715const FunctionType *Decl::getFunctionType(bool BlocksToo) const {
716 QualType Ty;
717 if (const ValueDecl *D = dyn_cast<ValueDecl>(this))
718 Ty = D->getType();
719 else if (const TypedefNameDecl *D = dyn_cast<TypedefNameDecl>(this))
720 Ty = D->getUnderlyingType();
721 else
722 return nullptr;
723
724 if (Ty->isFunctionPointerType())
725 Ty = Ty->getAs<PointerType>()->getPointeeType();
726 else if (BlocksToo && Ty->isBlockPointerType())
727 Ty = Ty->getAs<BlockPointerType>()->getPointeeType();
728
729 return Ty->getAs<FunctionType>();
730}
731
732
733/// Starting at a given context (a Decl or DeclContext), look for a
734/// code context that is not a closure (a lambda, block, etc.).
735template <class T> static Decl *getNonClosureContext(T *D) {
736 if (getKind(D) == Decl::CXXMethod) {
737 CXXMethodDecl *MD = cast<CXXMethodDecl>(D);
738 if (MD->getOverloadedOperator() == OO_Call &&
739 MD->getParent()->isLambda())
740 return getNonClosureContext(MD->getParent()->getParent());
741 return MD;
742 } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
743 return FD;
744 } else if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) {
745 return MD;
746 } else if (BlockDecl *BD = dyn_cast<BlockDecl>(D)) {
747 return getNonClosureContext(BD->getParent());
748 } else if (CapturedDecl *CD = dyn_cast<CapturedDecl>(D)) {
749 return getNonClosureContext(CD->getParent());
750 } else {
751 return nullptr;
752 }
753}
754
755Decl *Decl::getNonClosureContext() {
756 return ::getNonClosureContext(this);
757}
758
759Decl *DeclContext::getNonClosureAncestor() {
760 return ::getNonClosureContext(this);
761}
762
763//===----------------------------------------------------------------------===//
764// DeclContext Implementation
765//===----------------------------------------------------------------------===//
766
767bool DeclContext::classof(const Decl *D) {
768 switch (D->getKind()) {
769#define DECL(NAME, BASE)
770#define DECL_CONTEXT(NAME) case Decl::NAME:
771#define DECL_CONTEXT_BASE(NAME)
772#include "clang/AST/DeclNodes.inc"
773 return true;
774 default:
775#define DECL(NAME, BASE)
776#define DECL_CONTEXT_BASE(NAME) \
777 if (D->getKind() >= Decl::first##NAME && \
778 D->getKind() <= Decl::last##NAME) \
779 return true;
780#include "clang/AST/DeclNodes.inc"
781 return false;
782 }
783}
784
785DeclContext::~DeclContext() { }
786
787/// \brief Find the parent context of this context that will be
788/// used for unqualified name lookup.
789///
790/// Generally, the parent lookup context is the semantic context. However, for
791/// a friend function the parent lookup context is the lexical context, which
792/// is the class in which the friend is declared.
793DeclContext *DeclContext::getLookupParent() {
794 // FIXME: Find a better way to identify friends
795 if (isa<FunctionDecl>(this))
796 if (getParent()->getRedeclContext()->isFileContext() &&
797 getLexicalParent()->getRedeclContext()->isRecord())
798 return getLexicalParent();
799
800 return getParent();
801}
802
803bool DeclContext::isInlineNamespace() const {
804 return isNamespace() &&
805 cast<NamespaceDecl>(this)->isInline();
806}
807
808bool DeclContext::isStdNamespace() const {
809 if (!isNamespace())
810 return false;
811
812 const NamespaceDecl *ND = cast<NamespaceDecl>(this);
813 if (ND->isInline()) {
814 return ND->getParent()->isStdNamespace();
815 }
816
817 if (!getParent()->getRedeclContext()->isTranslationUnit())
818 return false;
819
820 const IdentifierInfo *II = ND->getIdentifier();
821 return II && II->isStr("std");
822}
823
824bool DeclContext::isDependentContext() const {
825 if (isFileContext())
826 return false;
827
828 if (isa<ClassTemplatePartialSpecializationDecl>(this))
829 return true;
830
831 if (const CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(this)) {
832 if (Record->getDescribedClassTemplate())
833 return true;
834
835 if (Record->isDependentLambda())
836 return true;
837 }
838
839 if (const FunctionDecl *Function = dyn_cast<FunctionDecl>(this)) {
840 if (Function->getDescribedFunctionTemplate())
841 return true;
842
843 // Friend function declarations are dependent if their *lexical*
844 // context is dependent.
845 if (cast<Decl>(this)->getFriendObjectKind())
846 return getLexicalParent()->isDependentContext();
847 }
848
849 return getParent() && getParent()->isDependentContext();
850}
851
852bool DeclContext::isTransparentContext() const {
853 if (DeclKind == Decl::Enum)
854 return !cast<EnumDecl>(this)->isScoped();
855 else if (DeclKind == Decl::LinkageSpec)
856 return true;
857
858 return false;
859}
860
861static bool isLinkageSpecContext(const DeclContext *DC,
862 LinkageSpecDecl::LanguageIDs ID) {
863 while (DC->getDeclKind() != Decl::TranslationUnit) {
864 if (DC->getDeclKind() == Decl::LinkageSpec)
865 return cast<LinkageSpecDecl>(DC)->getLanguage() == ID;
866 DC = DC->getLexicalParent();
867 }
868 return false;
869}
870
871bool DeclContext::isExternCContext() const {
872 return isLinkageSpecContext(this, clang::LinkageSpecDecl::lang_c);
873}
874
875bool DeclContext::isExternCXXContext() const {
876 return isLinkageSpecContext(this, clang::LinkageSpecDecl::lang_cxx);
877}
878
879bool DeclContext::Encloses(const DeclContext *DC) const {
880 if (getPrimaryContext() != this)
881 return getPrimaryContext()->Encloses(DC);
882
883 for (; DC; DC = DC->getParent())
884 if (DC->getPrimaryContext() == this)
885 return true;
886 return false;
887}
888
889DeclContext *DeclContext::getPrimaryContext() {
890 switch (DeclKind) {
891 case Decl::TranslationUnit:
892 case Decl::LinkageSpec:
893 case Decl::Block:
894 case Decl::Captured:
895 // There is only one DeclContext for these entities.
896 return this;
897
898 case Decl::Namespace:
899 // The original namespace is our primary context.
900 return static_cast<NamespaceDecl*>(this)->getOriginalNamespace();
901
902 case Decl::ObjCMethod:
903 return this;
904
905 case Decl::ObjCInterface:
906 if (ObjCInterfaceDecl *Def = cast<ObjCInterfaceDecl>(this)->getDefinition())
907 return Def;
908
909 return this;
910
911 case Decl::ObjCProtocol:
912 if (ObjCProtocolDecl *Def = cast<ObjCProtocolDecl>(this)->getDefinition())
913 return Def;
914
915 return this;
916
917 case Decl::ObjCCategory:
918 return this;
919
920 case Decl::ObjCImplementation:
921 case Decl::ObjCCategoryImpl:
922 return this;
923
924 default:
925 if (DeclKind >= Decl::firstTag && DeclKind <= Decl::lastTag) {
926 // If this is a tag type that has a definition or is currently
927 // being defined, that definition is our primary context.
928 TagDecl *Tag = cast<TagDecl>(this);
929
930 if (TagDecl *Def = Tag->getDefinition())
931 return Def;
932
933 if (const TagType *TagTy = dyn_cast<TagType>(Tag->getTypeForDecl())) {
934 // Note, TagType::getDecl returns the (partial) definition one exists.
935 TagDecl *PossiblePartialDef = TagTy->getDecl();
936 if (PossiblePartialDef->isBeingDefined())
937 return PossiblePartialDef;
938 } else {
939 assert(isa<InjectedClassNameType>(Tag->getTypeForDecl()))((isa<InjectedClassNameType>(Tag->getTypeForDecl()))
? static_cast<void> (0) : __assert_fail ("isa<InjectedClassNameType>(Tag->getTypeForDecl())"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 939, __PRETTY_FUNCTION__));
940 }
941
942 return Tag;
943 }
944
945 assert(DeclKind >= Decl::firstFunction && DeclKind <= Decl::lastFunction &&((DeclKind >= Decl::firstFunction && DeclKind <=
Decl::lastFunction && "Unknown DeclContext kind") ? static_cast
<void> (0) : __assert_fail ("DeclKind >= Decl::firstFunction && DeclKind <= Decl::lastFunction && \"Unknown DeclContext kind\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 946, __PRETTY_FUNCTION__))
946 "Unknown DeclContext kind")((DeclKind >= Decl::firstFunction && DeclKind <=
Decl::lastFunction && "Unknown DeclContext kind") ? static_cast
<void> (0) : __assert_fail ("DeclKind >= Decl::firstFunction && DeclKind <= Decl::lastFunction && \"Unknown DeclContext kind\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 946, __PRETTY_FUNCTION__));
947 return this;
948 }
949}
950
951void
952DeclContext::collectAllContexts(SmallVectorImpl<DeclContext *> &Contexts){
953 Contexts.clear();
954
955 if (DeclKind != Decl::Namespace) {
956 Contexts.push_back(this);
957 return;
958 }
959
960 NamespaceDecl *Self = static_cast<NamespaceDecl *>(this);
961 for (NamespaceDecl *N = Self->getMostRecentDecl(); N;
962 N = N->getPreviousDecl())
963 Contexts.push_back(N);
964
965 std::reverse(Contexts.begin(), Contexts.end());
966}
967
968std::pair<Decl *, Decl *>
969DeclContext::BuildDeclChain(ArrayRef<Decl*> Decls,
970 bool FieldsAlreadyLoaded) {
971 // Build up a chain of declarations via the Decl::NextInContextAndBits field.
972 Decl *FirstNewDecl = nullptr;
973 Decl *PrevDecl = nullptr;
974 for (unsigned I = 0, N = Decls.size(); I != N; ++I) {
975 if (FieldsAlreadyLoaded && isa<FieldDecl>(Decls[I]))
976 continue;
977
978 Decl *D = Decls[I];
979 if (PrevDecl)
980 PrevDecl->NextInContextAndBits.setPointer(D);
981 else
982 FirstNewDecl = D;
983
984 PrevDecl = D;
985 }
986
987 return std::make_pair(FirstNewDecl, PrevDecl);
988}
989
990/// \brief We have just acquired external visible storage, and we already have
991/// built a lookup map. For every name in the map, pull in the new names from
992/// the external storage.
993void DeclContext::reconcileExternalVisibleStorage() const {
994 assert(NeedToReconcileExternalVisibleStorage && LookupPtr.getPointer())((NeedToReconcileExternalVisibleStorage && LookupPtr.
getPointer()) ? static_cast<void> (0) : __assert_fail (
"NeedToReconcileExternalVisibleStorage && LookupPtr.getPointer()"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 994, __PRETTY_FUNCTION__));
995 NeedToReconcileExternalVisibleStorage = false;
996
997 for (auto &Lookup : *LookupPtr.getPointer())
998 Lookup.second.setHasExternalDecls();
999}
1000
1001/// \brief Load the declarations within this lexical storage from an
1002/// external source.
1003void
1004DeclContext::LoadLexicalDeclsFromExternalStorage() const {
1005 ExternalASTSource *Source = getParentASTContext().getExternalSource();
1006 assert(hasExternalLexicalStorage() && Source && "No external storage?")((hasExternalLexicalStorage() && Source && "No external storage?"
) ? static_cast<void> (0) : __assert_fail ("hasExternalLexicalStorage() && Source && \"No external storage?\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1006, __PRETTY_FUNCTION__));
1007
1008 // Notify that we have a DeclContext that is initializing.
1009 ExternalASTSource::Deserializing ADeclContext(Source);
1010
1011 // Load the external declarations, if any.
1012 SmallVector<Decl*, 64> Decls;
1013 ExternalLexicalStorage = false;
1014 switch (Source->FindExternalLexicalDecls(this, Decls)) {
1015 case ELR_Success:
1016 break;
1017
1018 case ELR_Failure:
1019 case ELR_AlreadyLoaded:
1020 return;
1021 }
1022
1023 if (Decls.empty())
1024 return;
1025
1026 // We may have already loaded just the fields of this record, in which case
1027 // we need to ignore them.
1028 bool FieldsAlreadyLoaded = false;
1029 if (const RecordDecl *RD = dyn_cast<RecordDecl>(this))
1030 FieldsAlreadyLoaded = RD->LoadedFieldsFromExternalStorage;
1031
1032 // Splice the newly-read declarations into the beginning of the list
1033 // of declarations.
1034 Decl *ExternalFirst, *ExternalLast;
1035 std::tie(ExternalFirst, ExternalLast) =
1036 BuildDeclChain(Decls, FieldsAlreadyLoaded);
1037 ExternalLast->NextInContextAndBits.setPointer(FirstDecl);
1038 FirstDecl = ExternalFirst;
1039 if (!LastDecl)
1040 LastDecl = ExternalLast;
1041}
1042
1043DeclContext::lookup_result
1044ExternalASTSource::SetNoExternalVisibleDeclsForName(const DeclContext *DC,
1045 DeclarationName Name) {
1046 ASTContext &Context = DC->getParentASTContext();
1047 StoredDeclsMap *Map;
1048 if (!(Map = DC->LookupPtr.getPointer()))
1049 Map = DC->CreateStoredDeclsMap(Context);
1050 if (DC->NeedToReconcileExternalVisibleStorage)
1051 DC->reconcileExternalVisibleStorage();
1052
1053 (*Map)[Name].removeExternalDecls();
1054
1055 return DeclContext::lookup_result();
1056}
1057
1058DeclContext::lookup_result
1059ExternalASTSource::SetExternalVisibleDeclsForName(const DeclContext *DC,
1060 DeclarationName Name,
1061 ArrayRef<NamedDecl*> Decls) {
1062 ASTContext &Context = DC->getParentASTContext();
1063 StoredDeclsMap *Map;
1064 if (!(Map = DC->LookupPtr.getPointer()))
1065 Map = DC->CreateStoredDeclsMap(Context);
1066 if (DC->NeedToReconcileExternalVisibleStorage)
1067 DC->reconcileExternalVisibleStorage();
1068
1069 StoredDeclsList &List = (*Map)[Name];
1070
1071 // Clear out any old external visible declarations, to avoid quadratic
1072 // performance in the redeclaration checks below.
1073 List.removeExternalDecls();
1074
1075 if (!List.isNull()) {
1076 // We have both existing declarations and new declarations for this name.
1077 // Some of the declarations may simply replace existing ones. Handle those
1078 // first.
1079 llvm::SmallVector<unsigned, 8> Skip;
1080 for (unsigned I = 0, N = Decls.size(); I != N; ++I)
1081 if (List.HandleRedeclaration(Decls[I]))
1082 Skip.push_back(I);
1083 Skip.push_back(Decls.size());
1084
1085 // Add in any new declarations.
1086 unsigned SkipPos = 0;
1087 for (unsigned I = 0, N = Decls.size(); I != N; ++I) {
1088 if (I == Skip[SkipPos])
1089 ++SkipPos;
1090 else
1091 List.AddSubsequentDecl(Decls[I]);
1092 }
1093 } else {
1094 // Convert the array to a StoredDeclsList.
1095 for (ArrayRef<NamedDecl*>::iterator
1096 I = Decls.begin(), E = Decls.end(); I != E; ++I) {
1097 if (List.isNull())
1098 List.setOnlyValue(*I);
1099 else
1100 List.AddSubsequentDecl(*I);
1101 }
1102 }
1103
1104 return List.getLookupResult();
1105}
1106
1107DeclContext::decl_iterator DeclContext::decls_begin() const {
1108 if (hasExternalLexicalStorage())
1109 LoadLexicalDeclsFromExternalStorage();
1110 return decl_iterator(FirstDecl);
1111}
1112
1113bool DeclContext::decls_empty() const {
1114 if (hasExternalLexicalStorage())
1115 LoadLexicalDeclsFromExternalStorage();
1116
1117 return !FirstDecl;
1118}
1119
1120bool DeclContext::containsDecl(Decl *D) const {
1121 return (D->getLexicalDeclContext() == this &&
1122 (D->NextInContextAndBits.getPointer() || D == LastDecl));
1123}
1124
1125void DeclContext::removeDecl(Decl *D) {
1126 assert(D->getLexicalDeclContext() == this &&((D->getLexicalDeclContext() == this && "decl being removed from non-lexical context"
) ? static_cast<void> (0) : __assert_fail ("D->getLexicalDeclContext() == this && \"decl being removed from non-lexical context\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1127, __PRETTY_FUNCTION__))
1127 "decl being removed from non-lexical context")((D->getLexicalDeclContext() == this && "decl being removed from non-lexical context"
) ? static_cast<void> (0) : __assert_fail ("D->getLexicalDeclContext() == this && \"decl being removed from non-lexical context\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1127, __PRETTY_FUNCTION__));
1128 assert((D->NextInContextAndBits.getPointer() || D == LastDecl) &&(((D->NextInContextAndBits.getPointer() || D == LastDecl) &&
"decl is not in decls list") ? static_cast<void> (0) :
__assert_fail ("(D->NextInContextAndBits.getPointer() || D == LastDecl) && \"decl is not in decls list\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1129, __PRETTY_FUNCTION__))
1129 "decl is not in decls list")(((D->NextInContextAndBits.getPointer() || D == LastDecl) &&
"decl is not in decls list") ? static_cast<void> (0) :
__assert_fail ("(D->NextInContextAndBits.getPointer() || D == LastDecl) && \"decl is not in decls list\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1129, __PRETTY_FUNCTION__));
1130
1131 // Remove D from the decl chain. This is O(n) but hopefully rare.
1132 if (D == FirstDecl) {
1133 if (D == LastDecl)
1134 FirstDecl = LastDecl = nullptr;
1135 else
1136 FirstDecl = D->NextInContextAndBits.getPointer();
1137 } else {
1138 for (Decl *I = FirstDecl; true; I = I->NextInContextAndBits.getPointer()) {
1139 assert(I && "decl not found in linked list")((I && "decl not found in linked list") ? static_cast
<void> (0) : __assert_fail ("I && \"decl not found in linked list\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1139, __PRETTY_FUNCTION__));
1140 if (I->NextInContextAndBits.getPointer() == D) {
1141 I->NextInContextAndBits.setPointer(D->NextInContextAndBits.getPointer());
1142 if (D == LastDecl) LastDecl = I;
1143 break;
1144 }
1145 }
1146 }
1147
1148 // Mark that D is no longer in the decl chain.
1149 D->NextInContextAndBits.setPointer(nullptr);
1150
1151 // Remove D from the lookup table if necessary.
1152 if (isa<NamedDecl>(D)) {
1153 NamedDecl *ND = cast<NamedDecl>(D);
1154
1155 // Remove only decls that have a name
1156 if (!ND->getDeclName()) return;
1157
1158 StoredDeclsMap *Map = getPrimaryContext()->LookupPtr.getPointer();
1159 if (!Map) return;
1160
1161 StoredDeclsMap::iterator Pos = Map->find(ND->getDeclName());
1162 assert(Pos != Map->end() && "no lookup entry for decl")((Pos != Map->end() && "no lookup entry for decl")
? static_cast<void> (0) : __assert_fail ("Pos != Map->end() && \"no lookup entry for decl\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1162, __PRETTY_FUNCTION__));
1163 if (Pos->second.getAsVector() || Pos->second.getAsDecl() == ND)
1164 Pos->second.remove(ND);
1165 }
1166}
1167
1168void DeclContext::addHiddenDecl(Decl *D) {
1169 assert(D->getLexicalDeclContext() == this &&((D->getLexicalDeclContext() == this && "Decl inserted into wrong lexical context"
) ? static_cast<void> (0) : __assert_fail ("D->getLexicalDeclContext() == this && \"Decl inserted into wrong lexical context\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1170, __PRETTY_FUNCTION__))
1170 "Decl inserted into wrong lexical context")((D->getLexicalDeclContext() == this && "Decl inserted into wrong lexical context"
) ? static_cast<void> (0) : __assert_fail ("D->getLexicalDeclContext() == this && \"Decl inserted into wrong lexical context\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1170, __PRETTY_FUNCTION__));
1171 assert(!D->getNextDeclInContext() && D != LastDecl &&((!D->getNextDeclInContext() && D != LastDecl &&
"Decl already inserted into a DeclContext") ? static_cast<
void> (0) : __assert_fail ("!D->getNextDeclInContext() && D != LastDecl && \"Decl already inserted into a DeclContext\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1172, __PRETTY_FUNCTION__))
1172 "Decl already inserted into a DeclContext")((!D->getNextDeclInContext() && D != LastDecl &&
"Decl already inserted into a DeclContext") ? static_cast<
void> (0) : __assert_fail ("!D->getNextDeclInContext() && D != LastDecl && \"Decl already inserted into a DeclContext\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1172, __PRETTY_FUNCTION__));
1173
1174 if (FirstDecl) {
1175 LastDecl->NextInContextAndBits.setPointer(D);
1176 LastDecl = D;
1177 } else {
1178 FirstDecl = LastDecl = D;
1179 }
1180
1181 // Notify a C++ record declaration that we've added a member, so it can
1182 // update it's class-specific state.
1183 if (CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(this))
1184 Record->addedMember(D);
1185
1186 // If this is a newly-created (not de-serialized) import declaration, wire
1187 // it in to the list of local import declarations.
1188 if (!D->isFromASTFile()) {
1189 if (ImportDecl *Import = dyn_cast<ImportDecl>(D))
1190 D->getASTContext().addedLocalImportDecl(Import);
1191 }
1192}
1193
1194void DeclContext::addDecl(Decl *D) {
1195 addHiddenDecl(D);
1196
1197 if (NamedDecl *ND = dyn_cast<NamedDecl>(D))
1198 ND->getDeclContext()->getPrimaryContext()->
1199 makeDeclVisibleInContextWithFlags(ND, false, true);
1200}
1201
1202void DeclContext::addDeclInternal(Decl *D) {
1203 addHiddenDecl(D);
1204
1205 if (NamedDecl *ND = dyn_cast<NamedDecl>(D))
1206 ND->getDeclContext()->getPrimaryContext()->
1207 makeDeclVisibleInContextWithFlags(ND, true, true);
1208}
1209
1210/// shouldBeHidden - Determine whether a declaration which was declared
1211/// within its semantic context should be invisible to qualified name lookup.
1212static bool shouldBeHidden(NamedDecl *D) {
1213 // Skip unnamed declarations.
1214 if (!D->getDeclName())
1215 return true;
1216
1217 // Skip entities that can't be found by name lookup into a particular
1218 // context.
1219 if ((D->getIdentifierNamespace() == 0 && !isa<UsingDirectiveDecl>(D)) ||
1220 D->isTemplateParameter())
1221 return true;
1222
1223 // Skip template specializations.
1224 // FIXME: This feels like a hack. Should DeclarationName support
1225 // template-ids, or is there a better way to keep specializations
1226 // from being visible?
1227 if (isa<ClassTemplateSpecializationDecl>(D))
1228 return true;
1229 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
1230 if (FD->isFunctionTemplateSpecialization())
1231 return true;
1232
1233 return false;
1234}
1235
1236/// buildLookup - Build the lookup data structure with all of the
1237/// declarations in this DeclContext (and any other contexts linked
1238/// to it or transparent contexts nested within it) and return it.
1239///
1240/// Note that the produced map may miss out declarations from an
1241/// external source. If it does, those entries will be marked with
1242/// the 'hasExternalDecls' flag.
1243StoredDeclsMap *DeclContext::buildLookup() {
1244 assert(this == getPrimaryContext() && "buildLookup called on non-primary DC")((this == getPrimaryContext() && "buildLookup called on non-primary DC"
) ? static_cast<void> (0) : __assert_fail ("this == getPrimaryContext() && \"buildLookup called on non-primary DC\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1244, __PRETTY_FUNCTION__));
1245
1246 // FIXME: Should we keep going if hasExternalVisibleStorage?
1247 if (!LookupPtr.getInt())
1248 return LookupPtr.getPointer();
1249
1250 SmallVector<DeclContext *, 2> Contexts;
1251 collectAllContexts(Contexts);
1252 for (unsigned I = 0, N = Contexts.size(); I != N; ++I)
1253 buildLookupImpl<&DeclContext::decls_begin,
1254 &DeclContext::decls_end>(Contexts[I]);
1255
1256 // We no longer have any lazy decls.
1257 LookupPtr.setInt(false);
1258 return LookupPtr.getPointer();
1259}
1260
1261/// buildLookupImpl - Build part of the lookup data structure for the
1262/// declarations contained within DCtx, which will either be this
1263/// DeclContext, a DeclContext linked to it, or a transparent context
1264/// nested within it.
1265template<DeclContext::decl_iterator (DeclContext::*Begin)() const,
1266 DeclContext::decl_iterator (DeclContext::*End)() const>
1267void DeclContext::buildLookupImpl(DeclContext *DCtx) {
1268 for (decl_iterator I = (DCtx->*Begin)(), E = (DCtx->*End)();
1269 I != E; ++I) {
1270 Decl *D = *I;
1271
1272 // Insert this declaration into the lookup structure, but only if
1273 // it's semantically within its decl context. Any other decls which
1274 // should be found in this context are added eagerly.
1275 //
1276 // If it's from an AST file, don't add it now. It'll get handled by
1277 // FindExternalVisibleDeclsByName if needed. Exception: if we're not
1278 // in C++, we do not track external visible decls for the TU, so in
1279 // that case we need to collect them all here.
1280 if (NamedDecl *ND = dyn_cast<NamedDecl>(D))
1281 if (ND->getDeclContext() == DCtx && !shouldBeHidden(ND) &&
1282 (!ND->isFromASTFile() ||
1283 (isTranslationUnit() &&
1284 !getParentASTContext().getLangOpts().CPlusPlus)))
1285 makeDeclVisibleInContextImpl(ND, false);
1286
1287 // If this declaration is itself a transparent declaration context
1288 // or inline namespace, add the members of this declaration of that
1289 // context (recursively).
1290 if (DeclContext *InnerCtx = dyn_cast<DeclContext>(D))
1291 if (InnerCtx->isTransparentContext() || InnerCtx->isInlineNamespace())
1292 buildLookupImpl<Begin, End>(InnerCtx);
1293 }
1294}
1295
1296DeclContext::lookup_result
1297DeclContext::lookup(DeclarationName Name) {
1298 assert(DeclKind != Decl::LinkageSpec &&((DeclKind != Decl::LinkageSpec && "Should not perform lookups into linkage specs!"
) ? static_cast<void> (0) : __assert_fail ("DeclKind != Decl::LinkageSpec && \"Should not perform lookups into linkage specs!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1299, __PRETTY_FUNCTION__))
1299 "Should not perform lookups into linkage specs!")((DeclKind != Decl::LinkageSpec && "Should not perform lookups into linkage specs!"
) ? static_cast<void> (0) : __assert_fail ("DeclKind != Decl::LinkageSpec && \"Should not perform lookups into linkage specs!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1299, __PRETTY_FUNCTION__));
1300
1301 DeclContext *PrimaryContext = getPrimaryContext();
1302 if (PrimaryContext != this)
1303 return PrimaryContext->lookup(Name);
1304
1305 // If this is a namespace, ensure that any later redeclarations of it have
1306 // been loaded, since they may add names to the result of this lookup.
1307 if (auto *ND = dyn_cast<NamespaceDecl>(this))
1308 (void)ND->getMostRecentDecl();
1309
1310 if (hasExternalVisibleStorage()) {
1311 if (NeedToReconcileExternalVisibleStorage)
1312 reconcileExternalVisibleStorage();
1313
1314 StoredDeclsMap *Map = LookupPtr.getPointer();
1315
1316 if (LookupPtr.getInt())
1317 Map = buildLookup();
1318
1319 if (!Map)
1320 Map = CreateStoredDeclsMap(getParentASTContext());
1321
1322 // If we have a lookup result with no external decls, we are done.
1323 std::pair<StoredDeclsMap::iterator, bool> R =
1324 Map->insert(std::make_pair(Name, StoredDeclsList()));
1325 if (!R.second && !R.first->second.hasExternalDecls())
1326 return R.first->second.getLookupResult();
1327
1328 ExternalASTSource *Source = getParentASTContext().getExternalSource();
1329 if (Source->FindExternalVisibleDeclsByName(this, Name) || !R.second) {
1330 if (StoredDeclsMap *Map = LookupPtr.getPointer()) {
1331 StoredDeclsMap::iterator I = Map->find(Name);
1332 if (I != Map->end())
1333 return I->second.getLookupResult();
1334 }
1335 }
1336
1337 return lookup_result(lookup_iterator(nullptr), lookup_iterator(nullptr));
1338 }
1339
1340 StoredDeclsMap *Map = LookupPtr.getPointer();
1341 if (LookupPtr.getInt())
1342 Map = buildLookup();
1343
1344 if (!Map)
1345 return lookup_result(lookup_iterator(nullptr), lookup_iterator(nullptr));
1346
1347 StoredDeclsMap::iterator I = Map->find(Name);
1348 if (I == Map->end())
1349 return lookup_result(lookup_iterator(nullptr), lookup_iterator(nullptr));
1350
1351 return I->second.getLookupResult();
1352}
1353
1354DeclContext::lookup_result
1355DeclContext::noload_lookup(DeclarationName Name) {
1356 assert(DeclKind != Decl::LinkageSpec &&((DeclKind != Decl::LinkageSpec && "Should not perform lookups into linkage specs!"
) ? static_cast<void> (0) : __assert_fail ("DeclKind != Decl::LinkageSpec && \"Should not perform lookups into linkage specs!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1357, __PRETTY_FUNCTION__))
1357 "Should not perform lookups into linkage specs!")((DeclKind != Decl::LinkageSpec && "Should not perform lookups into linkage specs!"
) ? static_cast<void> (0) : __assert_fail ("DeclKind != Decl::LinkageSpec && \"Should not perform lookups into linkage specs!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1357, __PRETTY_FUNCTION__));
1358 if (!hasExternalVisibleStorage())
1359 return lookup(Name);
1360
1361 DeclContext *PrimaryContext = getPrimaryContext();
1362 if (PrimaryContext != this)
1363 return PrimaryContext->noload_lookup(Name);
1364
1365 StoredDeclsMap *Map = LookupPtr.getPointer();
1366 if (LookupPtr.getInt()) {
1367 // Carefully build the lookup map, without deserializing anything.
1368 SmallVector<DeclContext *, 2> Contexts;
1369 collectAllContexts(Contexts);
1370 for (unsigned I = 0, N = Contexts.size(); I != N; ++I)
1371 buildLookupImpl<&DeclContext::noload_decls_begin,
1372 &DeclContext::noload_decls_end>(Contexts[I]);
1373
1374 // We no longer have any lazy decls.
1375 LookupPtr.setInt(false);
1376
1377 // There may now be names for which we have local decls but are
1378 // missing the external decls. FIXME: Just set the hasExternalDecls
1379 // flag on those names that have external decls.
1380 NeedToReconcileExternalVisibleStorage = true;
1381
1382 Map = LookupPtr.getPointer();
1383 }
1384
1385 if (!Map)
1386 return lookup_result(lookup_iterator(nullptr), lookup_iterator(nullptr));
1387
1388 StoredDeclsMap::iterator I = Map->find(Name);
1389 return I != Map->end() ? I->second.getLookupResult()
1390 : lookup_result(lookup_iterator(nullptr),
1391 lookup_iterator(nullptr));
1392}
1393
1394void DeclContext::localUncachedLookup(DeclarationName Name,
1395 SmallVectorImpl<NamedDecl *> &Results) {
1396 Results.clear();
1397
1398 // If there's no external storage, just perform a normal lookup and copy
1399 // the results.
1400 if (!hasExternalVisibleStorage() && !hasExternalLexicalStorage() && Name) {
1401 lookup_result LookupResults = lookup(Name);
1402 Results.insert(Results.end(), LookupResults.begin(), LookupResults.end());
1403 return;
1404 }
1405
1406 // If we have a lookup table, check there first. Maybe we'll get lucky.
1407 if (Name && !LookupPtr.getInt()) {
1408 if (StoredDeclsMap *Map = LookupPtr.getPointer()) {
1409 StoredDeclsMap::iterator Pos = Map->find(Name);
1410 if (Pos != Map->end()) {
1411 Results.insert(Results.end(),
1412 Pos->second.getLookupResult().begin(),
1413 Pos->second.getLookupResult().end());
1414 return;
1415 }
1416 }
1417 }
1418
1419 // Slow case: grovel through the declarations in our chain looking for
1420 // matches.
1421 for (Decl *D = FirstDecl; D; D = D->getNextDeclInContext()) {
1422 if (NamedDecl *ND = dyn_cast<NamedDecl>(D))
1423 if (ND->getDeclName() == Name)
1424 Results.push_back(ND);
1425 }
1426}
1427
1428DeclContext *DeclContext::getRedeclContext() {
1429 DeclContext *Ctx = this;
1430 // Skip through transparent contexts.
1431 while (Ctx->isTransparentContext())
1432 Ctx = Ctx->getParent();
1433 return Ctx;
1434}
1435
1436DeclContext *DeclContext::getEnclosingNamespaceContext() {
1437 DeclContext *Ctx = this;
1438 // Skip through non-namespace, non-translation-unit contexts.
1439 while (!Ctx->isFileContext())
1440 Ctx = Ctx->getParent();
1441 return Ctx->getPrimaryContext();
1442}
1443
1444RecordDecl *DeclContext::getOuterLexicalRecordContext() {
1445 // Loop until we find a non-record context.
1446 RecordDecl *OutermostRD = nullptr;
1447 DeclContext *DC = this;
1448 while (DC->isRecord()) {
1449 OutermostRD = cast<RecordDecl>(DC);
1450 DC = DC->getLexicalParent();
1451 }
1452 return OutermostRD;
1453}
1454
1455bool DeclContext::InEnclosingNamespaceSetOf(const DeclContext *O) const {
1456 // For non-file contexts, this is equivalent to Equals.
1457 if (!isFileContext())
1458 return O->Equals(this);
1459
1460 do {
1461 if (O->Equals(this))
1462 return true;
1463
1464 const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(O);
1465 if (!NS || !NS->isInline())
1466 break;
1467 O = NS->getParent();
1468 } while (O);
1469
1470 return false;
1471}
1472
1473void DeclContext::makeDeclVisibleInContext(NamedDecl *D) {
1474 DeclContext *PrimaryDC = this->getPrimaryContext();
1475 DeclContext *DeclDC = D->getDeclContext()->getPrimaryContext();
1476 // If the decl is being added outside of its semantic decl context, we
1477 // need to ensure that we eagerly build the lookup information for it.
1478 PrimaryDC->makeDeclVisibleInContextWithFlags(D, false, PrimaryDC == DeclDC);
1479}
1480
1481void DeclContext::makeDeclVisibleInContextWithFlags(NamedDecl *D, bool Internal,
1482 bool Recoverable) {
1483 assert(this == getPrimaryContext() && "expected a primary DC")((this == getPrimaryContext() && "expected a primary DC"
) ? static_cast<void> (0) : __assert_fail ("this == getPrimaryContext() && \"expected a primary DC\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1483, __PRETTY_FUNCTION__));
1484
1485 // Skip declarations within functions.
1486 if (isFunctionOrMethod())
1487 return;
1488
1489 // Skip declarations which should be invisible to name lookup.
1490 if (shouldBeHidden(D))
1491 return;
1492
1493 // If we already have a lookup data structure, perform the insertion into
1494 // it. If we might have externally-stored decls with this name, look them
1495 // up and perform the insertion. If this decl was declared outside its
1496 // semantic context, buildLookup won't add it, so add it now.
1497 //
1498 // FIXME: As a performance hack, don't add such decls into the translation
1499 // unit unless we're in C++, since qualified lookup into the TU is never
1500 // performed.
1501 if (LookupPtr.getPointer() || hasExternalVisibleStorage() ||
1502 ((!Recoverable || D->getDeclContext() != D->getLexicalDeclContext()) &&
1503 (getParentASTContext().getLangOpts().CPlusPlus ||
1504 !isTranslationUnit()))) {
1505 // If we have lazily omitted any decls, they might have the same name as
1506 // the decl which we are adding, so build a full lookup table before adding
1507 // this decl.
1508 buildLookup();
1509 makeDeclVisibleInContextImpl(D, Internal);
1510 } else {
1511 LookupPtr.setInt(true);
1512 }
1513
1514 // If we are a transparent context or inline namespace, insert into our
1515 // parent context, too. This operation is recursive.
1516 if (isTransparentContext() || isInlineNamespace())
1517 getParent()->getPrimaryContext()->
1518 makeDeclVisibleInContextWithFlags(D, Internal, Recoverable);
1519
1520 Decl *DCAsDecl = cast<Decl>(this);
1521 // Notify that a decl was made visible unless we are a Tag being defined.
1522 if (!(isa<TagDecl>(DCAsDecl) && cast<TagDecl>(DCAsDecl)->isBeingDefined()))
1523 if (ASTMutationListener *L = DCAsDecl->getASTMutationListener())
1524 L->AddedVisibleDecl(this, D);
1525}
1526
1527void DeclContext::makeDeclVisibleInContextImpl(NamedDecl *D, bool Internal) {
1528 // Find or create the stored declaration map.
1529 StoredDeclsMap *Map = LookupPtr.getPointer();
1530 if (!Map) {
1531 ASTContext *C = &getParentASTContext();
1532 Map = CreateStoredDeclsMap(*C);
1533 }
1534
1535 // If there is an external AST source, load any declarations it knows about
1536 // with this declaration's name.
1537 // If the lookup table contains an entry about this name it means that we
1538 // have already checked the external source.
1539 if (!Internal)
1540 if (ExternalASTSource *Source = getParentASTContext().getExternalSource())
1541 if (hasExternalVisibleStorage() &&
1542 Map->find(D->getDeclName()) == Map->end())
1543 Source->FindExternalVisibleDeclsByName(this, D->getDeclName());
1544
1545 // Insert this declaration into the map.
1546 StoredDeclsList &DeclNameEntries = (*Map)[D->getDeclName()];
1547
1548 if (Internal) {
1549 // If this is being added as part of loading an external declaration,
1550 // this may not be the only external declaration with this name.
1551 // In this case, we never try to replace an existing declaration; we'll
1552 // handle that when we finalize the list of declarations for this name.
1553 DeclNameEntries.setHasExternalDecls();
1554 DeclNameEntries.AddSubsequentDecl(D);
1555 return;
1556 }
1557
1558 else if (DeclNameEntries.isNull()) {
1559 DeclNameEntries.setOnlyValue(D);
1560 return;
1561 }
1562
1563 if (DeclNameEntries.HandleRedeclaration(D)) {
1564 // This declaration has replaced an existing one for which
1565 // declarationReplaces returns true.
1566 return;
1567 }
1568
1569 // Put this declaration into the appropriate slot.
1570 DeclNameEntries.AddSubsequentDecl(D);
1571}
1572
1573/// Returns iterator range [First, Last) of UsingDirectiveDecls stored within
1574/// this context.
1575DeclContext::udir_range DeclContext::using_directives() const {
1576 // FIXME: Use something more efficient than normal lookup for using
1577 // directives. In C++, using directives are looked up more than anything else.
1578 lookup_const_result Result = lookup(UsingDirectiveDecl::getName());
1579 return udir_range(
1580 reinterpret_cast<UsingDirectiveDecl *const *>(Result.begin()),
1581 reinterpret_cast<UsingDirectiveDecl *const *>(Result.end()));
1582}
1583
1584//===----------------------------------------------------------------------===//
1585// Creation and Destruction of StoredDeclsMaps. //
1586//===----------------------------------------------------------------------===//
1587
1588StoredDeclsMap *DeclContext::CreateStoredDeclsMap(ASTContext &C) const {
1589 assert(!LookupPtr.getPointer() && "context already has a decls map")((!LookupPtr.getPointer() && "context already has a decls map"
) ? static_cast<void> (0) : __assert_fail ("!LookupPtr.getPointer() && \"context already has a decls map\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1589, __PRETTY_FUNCTION__));
1590 assert(getPrimaryContext() == this &&((getPrimaryContext() == this && "creating decls map on non-primary context"
) ? static_cast<void> (0) : __assert_fail ("getPrimaryContext() == this && \"creating decls map on non-primary context\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1591, __PRETTY_FUNCTION__))
1591 "creating decls map on non-primary context")((getPrimaryContext() == this && "creating decls map on non-primary context"
) ? static_cast<void> (0) : __assert_fail ("getPrimaryContext() == this && \"creating decls map on non-primary context\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1591, __PRETTY_FUNCTION__));
1592
1593 StoredDeclsMap *M;
1594 bool Dependent = isDependentContext();
1595 if (Dependent)
3
←
Assuming 'Dependent' is 0
→
4
←
Taking false branch
→
1596 M = new DependentStoredDeclsMap();
1597 else
1598 M = new StoredDeclsMap();
5
←
Memory is allocated
→
1599 M->Previous = C.LastSDM;
1600 C.LastSDM = llvm::PointerIntPair<StoredDeclsMap*,1>(M, Dependent);
1601 LookupPtr.setPointer(M);
1602 return M;
1603}
1604
1605void ASTContext::ReleaseDeclContextMaps() {
1606 // It's okay to delete DependentStoredDeclsMaps via a StoredDeclsMap
1607 // pointer because the subclass doesn't add anything that needs to
1608 // be deleted.
1609 StoredDeclsMap::DestroyAll(LastSDM.getPointer(), LastSDM.getInt());
1610}
1611
1612void StoredDeclsMap::DestroyAll(StoredDeclsMap *Map, bool Dependent) {
1613 while (Map) {
1614 // Advance the iteration before we invalidate memory.
1615 llvm::PointerIntPair<StoredDeclsMap*,1> Next = Map->Previous;
1616
1617 if (Dependent)
1618 delete static_cast<DependentStoredDeclsMap*>(Map);
1619 else
1620 delete Map;
1621
1622 Map = Next.getPointer();
1623 Dependent = Next.getInt();
1624 }
1625}
1626
1627DependentDiagnostic *DependentDiagnostic::Create(ASTContext &C,
1628 DeclContext *Parent,
1629 const PartialDiagnostic &PDiag) {
1630 assert(Parent->isDependentContext()((Parent->isDependentContext() && "cannot iterate dependent diagnostics of non-dependent context"
) ? static_cast<void> (0) : __assert_fail ("Parent->isDependentContext() && \"cannot iterate dependent diagnostics of non-dependent context\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1631, __PRETTY_FUNCTION__))
1631 && "cannot iterate dependent diagnostics of non-dependent context")((Parent->isDependentContext() && "cannot iterate dependent diagnostics of non-dependent context"
) ? static_cast<void> (0) : __assert_fail ("Parent->isDependentContext() && \"cannot iterate dependent diagnostics of non-dependent context\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn224369/tools/clang/lib/AST/DeclBase.cpp"
, 1631, __PRETTY_FUNCTION__));
1632 Parent = Parent->getPrimaryContext();
1633 if (!Parent->LookupPtr.getPointer())
1
Taking true branch
→
1634 Parent->CreateStoredDeclsMap(C);
2
←
Calling 'DeclContext::CreateStoredDeclsMap'
→
6
←
Returned allocated memory
→
1635
1636 DependentStoredDeclsMap *Map
1637 = static_cast<DependentStoredDeclsMap*>(Parent->LookupPtr.getPointer());
7
←
Potential memory leak
1638
1639 // Allocate the copy of the PartialDiagnostic via the ASTContext's
1640 // BumpPtrAllocator, rather than the ASTContext itself.
1641 PartialDiagnostic::Storage *DiagStorage = nullptr;
1642 if (PDiag.hasStorage())
1643 DiagStorage = new (C) PartialDiagnostic::Storage;
1644
1645 DependentDiagnostic *DD = new (C) DependentDiagnostic(PDiag, DiagStorage);
1646
1647 // TODO: Maybe we shouldn't reverse the order during insertion.
1648 DD->NextDiagnostic = Map->FirstDiagnostic;
1649 Map->FirstDiagnostic = DD;
1650
1651 return DD;
1652}