1 //===--- Decl.cpp - Declaration AST Node Implementation -------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the Decl subclasses.
12 //===----------------------------------------------------------------------===//
14 #include "clang/AST/Decl.h"
15 #include "clang/AST/DeclCXX.h"
16 #include "clang/AST/DeclObjC.h"
17 #include "clang/AST/DeclTemplate.h"
18 #include "clang/AST/ASTContext.h"
19 #include "clang/AST/TypeLoc.h"
20 #include "clang/AST/Stmt.h"
21 #include "clang/AST/Expr.h"
22 #include "clang/AST/ExprCXX.h"
23 #include "clang/AST/PrettyPrinter.h"
24 #include "clang/AST/ASTMutationListener.h"
25 #include "clang/Basic/Builtins.h"
26 #include "clang/Basic/IdentifierTable.h"
27 #include "clang/Basic/Specifiers.h"
28 #include "llvm/Support/ErrorHandling.h"
30 using namespace clang
;
32 //===----------------------------------------------------------------------===//
33 // NamedDecl Implementation
34 //===----------------------------------------------------------------------===//
36 static const VisibilityAttr
*GetExplicitVisibility(const Decl
*D
) {
37 // If the decl is redeclarable, make sure we use the explicit
38 // visibility attribute from the most recent declaration.
40 // Note that this isn't necessary for tags, which can't have their
41 // visibility adjusted.
42 if (isa
<VarDecl
>(D
)) {
43 return cast
<VarDecl
>(D
)->getMostRecentDeclaration()
44 ->getAttr
<VisibilityAttr
>();
45 } else if (isa
<FunctionDecl
>(D
)) {
46 return cast
<FunctionDecl
>(D
)->getMostRecentDeclaration()
47 ->getAttr
<VisibilityAttr
>();
49 return D
->getAttr
<VisibilityAttr
>();
53 static Visibility
GetVisibilityFromAttr(const VisibilityAttr
*A
) {
54 switch (A
->getVisibility()) {
55 case VisibilityAttr::Default
:
56 return DefaultVisibility
;
57 case VisibilityAttr::Hidden
:
58 return HiddenVisibility
;
59 case VisibilityAttr::Protected
:
60 return ProtectedVisibility
;
62 return DefaultVisibility
;
65 typedef NamedDecl::LinkageInfo LinkageInfo
;
66 typedef std::pair
<Linkage
,Visibility
> LVPair
;
68 static LVPair
merge(LVPair L
, LVPair R
) {
69 return LVPair(minLinkage(L
.first
, R
.first
),
70 minVisibility(L
.second
, R
.second
));
73 static LVPair
merge(LVPair L
, LinkageInfo R
) {
74 return LVPair(minLinkage(L
.first
, R
.linkage()),
75 minVisibility(L
.second
, R
.visibility()));
78 /// Flags controlling the computation of linkage and visibility.
80 bool ConsiderGlobalVisibility
;
81 bool ConsiderVisibilityAttributes
;
83 LVFlags() : ConsiderGlobalVisibility(true),
84 ConsiderVisibilityAttributes(true) {
87 /// Returns a set of flags, otherwise based on these, which ignores
88 /// off all sources of visibility except template arguments.
89 LVFlags
onlyTemplateVisibility() const {
91 F
.ConsiderGlobalVisibility
= false;
92 F
.ConsiderVisibilityAttributes
= false;
97 /// \brief Get the most restrictive linkage for the types in the given
98 /// template parameter list.
100 getLVForTemplateParameterList(const TemplateParameterList
*Params
) {
101 LVPair
LV(ExternalLinkage
, DefaultVisibility
);
102 for (TemplateParameterList::const_iterator P
= Params
->begin(),
103 PEnd
= Params
->end();
105 if (NonTypeTemplateParmDecl
*NTTP
= dyn_cast
<NonTypeTemplateParmDecl
>(*P
))
106 if (!NTTP
->getType()->isDependentType()) {
107 LV
= merge(LV
, NTTP
->getType()->getLinkageAndVisibility());
111 if (TemplateTemplateParmDecl
*TTP
112 = dyn_cast
<TemplateTemplateParmDecl
>(*P
)) {
113 LV
= merge(LV
, getLVForTemplateParameterList(TTP
->getTemplateParameters()));
120 /// \brief Get the most restrictive linkage for the types and
121 /// declarations in the given template argument list.
122 static LVPair
getLVForTemplateArgumentList(const TemplateArgument
*Args
,
124 LVPair
LV(ExternalLinkage
, DefaultVisibility
);
126 for (unsigned I
= 0; I
!= NumArgs
; ++I
) {
127 switch (Args
[I
].getKind()) {
128 case TemplateArgument::Null
:
129 case TemplateArgument::Integral
:
130 case TemplateArgument::Expression
:
133 case TemplateArgument::Type
:
134 LV
= merge(LV
, Args
[I
].getAsType()->getLinkageAndVisibility());
137 case TemplateArgument::Declaration
:
138 // The decl can validly be null as the representation of nullptr
139 // arguments, valid only in C++0x.
140 if (Decl
*D
= Args
[I
].getAsDecl()) {
141 if (NamedDecl
*ND
= dyn_cast
<NamedDecl
>(D
))
142 LV
= merge(LV
, ND
->getLinkageAndVisibility());
143 if (ValueDecl
*VD
= dyn_cast
<ValueDecl
>(D
))
144 LV
= merge(LV
, VD
->getLinkageAndVisibility());
148 case TemplateArgument::Template
:
149 if (TemplateDecl
*Template
= Args
[I
].getAsTemplate().getAsTemplateDecl())
150 LV
= merge(LV
, Template
->getLinkageAndVisibility());
153 case TemplateArgument::Pack
:
154 LV
= merge(LV
, getLVForTemplateArgumentList(Args
[I
].pack_begin(),
155 Args
[I
].pack_size()));
164 getLVForTemplateArgumentList(const TemplateArgumentList
&TArgs
) {
165 return getLVForTemplateArgumentList(TArgs
.getFlatArgumentList(),
169 /// getLVForDecl - Get the cached linkage and visibility for the given
171 static LinkageInfo
getLVForDecl(const NamedDecl
*D
, LVFlags F
);
173 static LinkageInfo
getLVForNamespaceScopeDecl(const NamedDecl
*D
, LVFlags F
) {
174 assert(D
->getDeclContext()->getRedeclContext()->isFileContext() &&
175 "Not a name having namespace scope");
176 ASTContext
&Context
= D
->getASTContext();
178 // C++ [basic.link]p3:
179 // A name having namespace scope (3.3.6) has internal linkage if it
181 // - an object, reference, function or function template that is
182 // explicitly declared static; or,
183 // (This bullet corresponds to C99 6.2.2p3.)
184 if (const VarDecl
*Var
= dyn_cast
<VarDecl
>(D
)) {
185 // Explicitly declared static.
186 if (Var
->getStorageClass() == SC_Static
)
187 return LinkageInfo::internal();
189 // - an object or reference that is explicitly declared const
190 // and neither explicitly declared extern nor previously
191 // declared to have external linkage; or
192 // (there is no equivalent in C99)
193 if (Context
.getLangOptions().CPlusPlus
&&
194 Var
->getType().isConstant(Context
) &&
195 Var
->getStorageClass() != SC_Extern
&&
196 Var
->getStorageClass() != SC_PrivateExtern
) {
197 bool FoundExtern
= false;
198 for (const VarDecl
*PrevVar
= Var
->getPreviousDeclaration();
199 PrevVar
&& !FoundExtern
;
200 PrevVar
= PrevVar
->getPreviousDeclaration())
201 if (isExternalLinkage(PrevVar
->getLinkage()))
205 return LinkageInfo::internal();
207 } else if (isa
<FunctionDecl
>(D
) || isa
<FunctionTemplateDecl
>(D
)) {
209 // A non-member function template can have internal linkage; any
210 // other template name shall have external linkage.
211 const FunctionDecl
*Function
= 0;
212 if (const FunctionTemplateDecl
*FunTmpl
213 = dyn_cast
<FunctionTemplateDecl
>(D
))
214 Function
= FunTmpl
->getTemplatedDecl();
216 Function
= cast
<FunctionDecl
>(D
);
218 // Explicitly declared static.
219 if (Function
->getStorageClass() == SC_Static
)
220 return LinkageInfo(InternalLinkage
, DefaultVisibility
, false);
221 } else if (const FieldDecl
*Field
= dyn_cast
<FieldDecl
>(D
)) {
222 // - a data member of an anonymous union.
223 if (cast
<RecordDecl
>(Field
->getDeclContext())->isAnonymousStructOrUnion())
224 return LinkageInfo::internal();
227 if (D
->isInAnonymousNamespace())
228 return LinkageInfo::uniqueExternal();
230 // Set up the defaults.
233 // If the declaration of an identifier for an object has file
234 // scope and no storage-class specifier, its linkage is
238 if (F
.ConsiderVisibilityAttributes
) {
239 if (const VisibilityAttr
*VA
= GetExplicitVisibility(D
)) {
240 LV
.setVisibility(GetVisibilityFromAttr(VA
), true);
241 F
.ConsiderGlobalVisibility
= false;
245 // C++ [basic.link]p4:
247 // A name having namespace scope has external linkage if it is the
250 // - an object or reference, unless it has internal linkage; or
251 if (const VarDecl
*Var
= dyn_cast
<VarDecl
>(D
)) {
252 // GCC applies the following optimization to variables and static
253 // data members, but not to functions:
255 // Modify the variable's LV by the LV of its type unless this is
256 // C or extern "C". This follows from [basic.link]p9:
257 // A type without linkage shall not be used as the type of a
258 // variable or function with external linkage unless
259 // - the entity has C language linkage, or
260 // - the entity is declared within an unnamed namespace, or
261 // - the entity is not used or is defined in the same
263 // and [basic.link]p10:
264 // ...the types specified by all declarations referring to a
265 // given variable or function shall be identical...
266 // C does not have an equivalent rule.
268 // Ignore this if we've got an explicit attribute; the user
269 // probably knows what they're doing.
271 // Note that we don't want to make the variable non-external
272 // because of this, but unique-external linkage suits us.
273 if (Context
.getLangOptions().CPlusPlus
&& !Var
->isExternC()) {
274 LVPair TypeLV
= Var
->getType()->getLinkageAndVisibility();
275 if (TypeLV
.first
!= ExternalLinkage
)
276 return LinkageInfo::uniqueExternal();
277 if (!LV
.visibilityExplicit())
278 LV
.mergeVisibility(TypeLV
.second
);
281 if (Var
->getStorageClass() == SC_PrivateExtern
)
282 LV
.setVisibility(HiddenVisibility
, true);
284 if (!Context
.getLangOptions().CPlusPlus
&&
285 (Var
->getStorageClass() == SC_Extern
||
286 Var
->getStorageClass() == SC_PrivateExtern
)) {
289 // For an identifier declared with the storage-class specifier
290 // extern in a scope in which a prior declaration of that
291 // identifier is visible, if the prior declaration specifies
292 // internal or external linkage, the linkage of the identifier
293 // at the later declaration is the same as the linkage
294 // specified at the prior declaration. If no prior declaration
295 // is visible, or if the prior declaration specifies no
296 // linkage, then the identifier has external linkage.
297 if (const VarDecl
*PrevVar
= Var
->getPreviousDeclaration()) {
298 LinkageInfo PrevLV
= PrevVar
->getLinkageAndVisibility();
299 if (PrevLV
.linkage()) LV
.setLinkage(PrevLV
.linkage());
300 LV
.mergeVisibility(PrevLV
);
304 // - a function, unless it has internal linkage; or
305 } else if (const FunctionDecl
*Function
= dyn_cast
<FunctionDecl
>(D
)) {
306 // In theory, we can modify the function's LV by the LV of its
307 // type unless it has C linkage (see comment above about variables
308 // for justification). In practice, GCC doesn't do this, so it's
309 // just too painful to make work.
311 if (Function
->getStorageClass() == SC_PrivateExtern
)
312 LV
.setVisibility(HiddenVisibility
, true);
315 // If the declaration of an identifier for a function has no
316 // storage-class specifier, its linkage is determined exactly
317 // as if it were declared with the storage-class specifier
319 if (!Context
.getLangOptions().CPlusPlus
&&
320 (Function
->getStorageClass() == SC_Extern
||
321 Function
->getStorageClass() == SC_PrivateExtern
||
322 Function
->getStorageClass() == SC_None
)) {
324 // For an identifier declared with the storage-class specifier
325 // extern in a scope in which a prior declaration of that
326 // identifier is visible, if the prior declaration specifies
327 // internal or external linkage, the linkage of the identifier
328 // at the later declaration is the same as the linkage
329 // specified at the prior declaration. If no prior declaration
330 // is visible, or if the prior declaration specifies no
331 // linkage, then the identifier has external linkage.
332 if (const FunctionDecl
*PrevFunc
= Function
->getPreviousDeclaration()) {
333 LinkageInfo PrevLV
= PrevFunc
->getLinkageAndVisibility();
334 if (PrevLV
.linkage()) LV
.setLinkage(PrevLV
.linkage());
335 LV
.mergeVisibility(PrevLV
);
339 if (FunctionTemplateSpecializationInfo
*SpecInfo
340 = Function
->getTemplateSpecializationInfo()) {
341 LV
.merge(getLVForDecl(SpecInfo
->getTemplate(),
342 F
.onlyTemplateVisibility()));
343 const TemplateArgumentList
&TemplateArgs
= *SpecInfo
->TemplateArguments
;
344 LV
.merge(getLVForTemplateArgumentList(TemplateArgs
));
347 // - a named class (Clause 9), or an unnamed class defined in a
348 // typedef declaration in which the class has the typedef name
349 // for linkage purposes (7.1.3); or
350 // - a named enumeration (7.2), or an unnamed enumeration
351 // defined in a typedef declaration in which the enumeration
352 // has the typedef name for linkage purposes (7.1.3); or
353 } else if (const TagDecl
*Tag
= dyn_cast
<TagDecl
>(D
)) {
354 // Unnamed tags have no linkage.
355 if (!Tag
->getDeclName() && !Tag
->getTypedefForAnonDecl())
356 return LinkageInfo::none();
358 // If this is a class template specialization, consider the
359 // linkage of the template and template arguments.
360 if (const ClassTemplateSpecializationDecl
*Spec
361 = dyn_cast
<ClassTemplateSpecializationDecl
>(Tag
)) {
362 // From the template.
363 LV
.merge(getLVForDecl(Spec
->getSpecializedTemplate(),
364 F
.onlyTemplateVisibility()));
366 // The arguments at which the template was instantiated.
367 const TemplateArgumentList
&TemplateArgs
= Spec
->getTemplateArgs();
368 LV
.merge(getLVForTemplateArgumentList(TemplateArgs
));
371 // Consider -fvisibility unless the type has C linkage.
372 if (F
.ConsiderGlobalVisibility
)
373 F
.ConsiderGlobalVisibility
=
374 (Context
.getLangOptions().CPlusPlus
&&
375 !Tag
->getDeclContext()->isExternCContext());
377 // - an enumerator belonging to an enumeration with external linkage;
378 } else if (isa
<EnumConstantDecl
>(D
)) {
380 cast
<NamedDecl
>(D
->getDeclContext())->getLinkageAndVisibility();
381 if (!isExternalLinkage(EnumLV
.linkage()))
382 return LinkageInfo::none();
385 // - a template, unless it is a function template that has
386 // internal linkage (Clause 14);
387 } else if (const TemplateDecl
*Template
= dyn_cast
<TemplateDecl
>(D
)) {
388 LV
.merge(getLVForTemplateParameterList(Template
->getTemplateParameters()));
390 // - a namespace (7.3), unless it is declared within an unnamed
392 } else if (isa
<NamespaceDecl
>(D
) && !D
->isInAnonymousNamespace()) {
395 // By extension, we assign external linkage to Objective-C
397 } else if (isa
<ObjCInterfaceDecl
>(D
)) {
400 // Everything not covered here has no linkage.
402 return LinkageInfo::none();
405 // If we ended up with non-external linkage, visibility should
406 // always be default.
407 if (LV
.linkage() != ExternalLinkage
)
408 return LinkageInfo(LV
.linkage(), DefaultVisibility
, false);
410 // If we didn't end up with hidden visibility, consider attributes
412 if (F
.ConsiderGlobalVisibility
)
413 LV
.mergeVisibility(Context
.getLangOptions().getVisibilityMode());
418 static LinkageInfo
getLVForClassMember(const NamedDecl
*D
, LVFlags F
) {
419 // Only certain class members have linkage. Note that fields don't
420 // really have linkage, but it's convenient to say they do for the
421 // purposes of calculating linkage of pointer-to-data-member
422 // template arguments.
423 if (!(isa
<CXXMethodDecl
>(D
) ||
427 (D
->getDeclName() || cast
<TagDecl
>(D
)->getTypedefForAnonDecl()))))
428 return LinkageInfo::none();
432 // The flags we're going to use to compute the class's visibility.
435 // If we have an explicit visibility attribute, merge that in.
436 if (F
.ConsiderVisibilityAttributes
) {
437 if (const VisibilityAttr
*VA
= GetExplicitVisibility(D
)) {
438 LV
.mergeVisibility(GetVisibilityFromAttr(VA
), true);
440 // Ignore global visibility later, but not this attribute.
441 F
.ConsiderGlobalVisibility
= false;
443 // Ignore both global visibility and attributes when computing our
444 // parent's visibility.
445 ClassF
= F
.onlyTemplateVisibility();
449 // Class members only have linkage if their class has external
451 LV
.merge(getLVForDecl(cast
<RecordDecl
>(D
->getDeclContext()), ClassF
));
452 if (!isExternalLinkage(LV
.linkage()))
453 return LinkageInfo::none();
455 // If the class already has unique-external linkage, we can't improve.
456 if (LV
.linkage() == UniqueExternalLinkage
)
457 return LinkageInfo::uniqueExternal();
459 if (const CXXMethodDecl
*MD
= dyn_cast
<CXXMethodDecl
>(D
)) {
460 TemplateSpecializationKind TSK
= TSK_Undeclared
;
462 // If this is a method template specialization, use the linkage for
463 // the template parameters and arguments.
464 if (FunctionTemplateSpecializationInfo
*Spec
465 = MD
->getTemplateSpecializationInfo()) {
466 LV
.merge(getLVForTemplateArgumentList(*Spec
->TemplateArguments
));
467 LV
.merge(getLVForTemplateParameterList(
468 Spec
->getTemplate()->getTemplateParameters()));
470 TSK
= Spec
->getTemplateSpecializationKind();
471 } else if (MemberSpecializationInfo
*MSI
=
472 MD
->getMemberSpecializationInfo()) {
473 TSK
= MSI
->getTemplateSpecializationKind();
476 // If we're paying attention to global visibility, apply
477 // -finline-visibility-hidden if this is an inline method.
479 // Note that ConsiderGlobalVisibility doesn't yet have information
480 // about whether containing classes have visibility attributes,
481 // and that's intentional.
482 if (TSK
!= TSK_ExplicitInstantiationDeclaration
&&
483 F
.ConsiderGlobalVisibility
&&
484 MD
->getASTContext().getLangOptions().InlineVisibilityHidden
) {
485 // InlineVisibilityHidden only applies to definitions, and
486 // isInlined() only gives meaningful answers on definitions
488 const FunctionDecl
*Def
= 0;
489 if (MD
->hasBody(Def
) && Def
->isInlined())
490 LV
.setVisibility(HiddenVisibility
);
493 // Note that in contrast to basically every other situation, we
494 // *do* apply -fvisibility to method declarations.
496 } else if (const CXXRecordDecl
*RD
= dyn_cast
<CXXRecordDecl
>(D
)) {
497 if (const ClassTemplateSpecializationDecl
*Spec
498 = dyn_cast
<ClassTemplateSpecializationDecl
>(RD
)) {
499 // Merge template argument/parameter information for member
500 // class template specializations.
501 LV
.merge(getLVForTemplateArgumentList(Spec
->getTemplateArgs()));
502 LV
.merge(getLVForTemplateParameterList(
503 Spec
->getSpecializedTemplate()->getTemplateParameters()));
506 // Static data members.
507 } else if (const VarDecl
*VD
= dyn_cast
<VarDecl
>(D
)) {
508 // Modify the variable's linkage by its type, but ignore the
509 // type's visibility unless it's a definition.
510 LVPair TypeLV
= VD
->getType()->getLinkageAndVisibility();
511 if (TypeLV
.first
!= ExternalLinkage
)
512 LV
.mergeLinkage(UniqueExternalLinkage
);
513 if (!LV
.visibilityExplicit())
514 LV
.mergeVisibility(TypeLV
.second
);
517 F
.ConsiderGlobalVisibility
&= !LV
.visibilityExplicit();
519 // Apply -fvisibility if desired.
520 if (F
.ConsiderGlobalVisibility
&& LV
.visibility() != HiddenVisibility
) {
521 LV
.mergeVisibility(D
->getASTContext().getLangOptions().getVisibilityMode());
527 LinkageInfo
NamedDecl::getLinkageAndVisibility() const {
528 return getLVForDecl(this, LVFlags());
531 static LinkageInfo
getLVForDecl(const NamedDecl
*D
, LVFlags Flags
) {
532 // Objective-C: treat all Objective-C declarations as having external
534 switch (D
->getKind()) {
537 case Decl::TemplateTemplateParm
: // count these as external
538 case Decl::NonTypeTemplateParm
:
539 case Decl::ObjCAtDefsField
:
540 case Decl::ObjCCategory
:
541 case Decl::ObjCCategoryImpl
:
542 case Decl::ObjCCompatibleAlias
:
543 case Decl::ObjCForwardProtocol
:
544 case Decl::ObjCImplementation
:
545 case Decl::ObjCMethod
:
546 case Decl::ObjCProperty
:
547 case Decl::ObjCPropertyImpl
:
548 case Decl::ObjCProtocol
:
549 return LinkageInfo::external();
552 // Handle linkage for namespace-scope names.
553 if (D
->getDeclContext()->getRedeclContext()->isFileContext())
554 return getLVForNamespaceScopeDecl(D
, Flags
);
556 // C++ [basic.link]p5:
557 // In addition, a member function, static data member, a named
558 // class or enumeration of class scope, or an unnamed class or
559 // enumeration defined in a class-scope typedef declaration such
560 // that the class or enumeration has the typedef name for linkage
561 // purposes (7.1.3), has external linkage if the name of the class
562 // has external linkage.
563 if (D
->getDeclContext()->isRecord())
564 return getLVForClassMember(D
, Flags
);
566 // C++ [basic.link]p6:
567 // The name of a function declared in block scope and the name of
568 // an object declared by a block scope extern declaration have
569 // linkage. If there is a visible declaration of an entity with
570 // linkage having the same name and type, ignoring entities
571 // declared outside the innermost enclosing namespace scope, the
572 // block scope declaration declares that same entity and receives
573 // the linkage of the previous declaration. If there is more than
574 // one such matching entity, the program is ill-formed. Otherwise,
575 // if no matching entity is found, the block scope entity receives
577 if (D
->getLexicalDeclContext()->isFunctionOrMethod()) {
578 if (const FunctionDecl
*Function
= dyn_cast
<FunctionDecl
>(D
)) {
579 if (Function
->isInAnonymousNamespace())
580 return LinkageInfo::uniqueExternal();
583 if (const VisibilityAttr
*VA
= GetExplicitVisibility(Function
))
584 LV
.setVisibility(GetVisibilityFromAttr(VA
));
586 if (const FunctionDecl
*Prev
= Function
->getPreviousDeclaration()) {
587 LinkageInfo PrevLV
= Prev
->getLinkageAndVisibility();
588 if (PrevLV
.linkage()) LV
.setLinkage(PrevLV
.linkage());
589 LV
.mergeVisibility(PrevLV
);
595 if (const VarDecl
*Var
= dyn_cast
<VarDecl
>(D
))
596 if (Var
->getStorageClass() == SC_Extern
||
597 Var
->getStorageClass() == SC_PrivateExtern
) {
598 if (Var
->isInAnonymousNamespace())
599 return LinkageInfo::uniqueExternal();
602 if (Var
->getStorageClass() == SC_PrivateExtern
)
603 LV
.setVisibility(HiddenVisibility
);
604 else if (const VisibilityAttr
*VA
= GetExplicitVisibility(Var
))
605 LV
.setVisibility(GetVisibilityFromAttr(VA
));
607 if (const VarDecl
*Prev
= Var
->getPreviousDeclaration()) {
608 LinkageInfo PrevLV
= Prev
->getLinkageAndVisibility();
609 if (PrevLV
.linkage()) LV
.setLinkage(PrevLV
.linkage());
610 LV
.mergeVisibility(PrevLV
);
617 // C++ [basic.link]p6:
618 // Names not covered by these rules have no linkage.
619 return LinkageInfo::none();
622 std::string
NamedDecl::getQualifiedNameAsString() const {
623 return getQualifiedNameAsString(getASTContext().getLangOptions());
626 std::string
NamedDecl::getQualifiedNameAsString(const PrintingPolicy
&P
) const {
627 const DeclContext
*Ctx
= getDeclContext();
629 if (Ctx
->isFunctionOrMethod())
630 return getNameAsString();
632 typedef llvm::SmallVector
<const DeclContext
*, 8> ContextsTy
;
636 while (Ctx
&& isa
<NamedDecl
>(Ctx
)) {
637 Contexts
.push_back(Ctx
);
638 Ctx
= Ctx
->getParent();
641 std::string QualName
;
642 llvm::raw_string_ostream
OS(QualName
);
644 for (ContextsTy::reverse_iterator I
= Contexts
.rbegin(), E
= Contexts
.rend();
646 if (const ClassTemplateSpecializationDecl
*Spec
647 = dyn_cast
<ClassTemplateSpecializationDecl
>(*I
)) {
648 const TemplateArgumentList
&TemplateArgs
= Spec
->getTemplateArgs();
649 std::string TemplateArgsStr
650 = TemplateSpecializationType::PrintTemplateArgumentList(
651 TemplateArgs
.getFlatArgumentList(),
652 TemplateArgs
.flat_size(),
654 OS
<< Spec
->getName() << TemplateArgsStr
;
655 } else if (const NamespaceDecl
*ND
= dyn_cast
<NamespaceDecl
>(*I
)) {
656 if (ND
->isAnonymousNamespace())
657 OS
<< "<anonymous namespace>";
660 } else if (const RecordDecl
*RD
= dyn_cast
<RecordDecl
>(*I
)) {
661 if (!RD
->getIdentifier())
662 OS
<< "<anonymous " << RD
->getKindName() << '>';
665 } else if (const FunctionDecl
*FD
= dyn_cast
<FunctionDecl
>(*I
)) {
666 const FunctionProtoType
*FT
= 0;
667 if (FD
->hasWrittenPrototype())
668 FT
= dyn_cast
<FunctionProtoType
>(FD
->getType()->getAs
<FunctionType
>());
672 unsigned NumParams
= FD
->getNumParams();
673 for (unsigned i
= 0; i
< NumParams
; ++i
) {
677 FD
->getParamDecl(i
)->getType().getAsStringInternal(Param
, P
);
681 if (FT
->isVariadic()) {
689 OS
<< cast
<NamedDecl
>(*I
);
702 bool NamedDecl::declarationReplaces(NamedDecl
*OldD
) const {
703 assert(getDeclName() == OldD
->getDeclName() && "Declaration name mismatch");
705 // UsingDirectiveDecl's are not really NamedDecl's, and all have same name.
706 // We want to keep it, unless it nominates same namespace.
707 if (getKind() == Decl::UsingDirective
) {
708 return cast
<UsingDirectiveDecl
>(this)->getNominatedNamespace() ==
709 cast
<UsingDirectiveDecl
>(OldD
)->getNominatedNamespace();
712 if (const FunctionDecl
*FD
= dyn_cast
<FunctionDecl
>(this))
713 // For function declarations, we keep track of redeclarations.
714 return FD
->getPreviousDeclaration() == OldD
;
716 // For function templates, the underlying function declarations are linked.
717 if (const FunctionTemplateDecl
*FunctionTemplate
718 = dyn_cast
<FunctionTemplateDecl
>(this))
719 if (const FunctionTemplateDecl
*OldFunctionTemplate
720 = dyn_cast
<FunctionTemplateDecl
>(OldD
))
721 return FunctionTemplate
->getTemplatedDecl()
722 ->declarationReplaces(OldFunctionTemplate
->getTemplatedDecl());
724 // For method declarations, we keep track of redeclarations.
725 if (isa
<ObjCMethodDecl
>(this))
728 if (isa
<ObjCInterfaceDecl
>(this) && isa
<ObjCCompatibleAliasDecl
>(OldD
))
731 if (isa
<UsingShadowDecl
>(this) && isa
<UsingShadowDecl
>(OldD
))
732 return cast
<UsingShadowDecl
>(this)->getTargetDecl() ==
733 cast
<UsingShadowDecl
>(OldD
)->getTargetDecl();
735 if (isa
<UsingDecl
>(this) && isa
<UsingDecl
>(OldD
))
736 return cast
<UsingDecl
>(this)->getTargetNestedNameDecl() ==
737 cast
<UsingDecl
>(OldD
)->getTargetNestedNameDecl();
739 // For non-function declarations, if the declarations are of the
740 // same kind then this must be a redeclaration, or semantic analysis
741 // would not have given us the new declaration.
742 return this->getKind() == OldD
->getKind();
745 bool NamedDecl::hasLinkage() const {
746 return getLinkage() != NoLinkage
;
749 NamedDecl
*NamedDecl::getUnderlyingDecl() {
750 NamedDecl
*ND
= this;
752 if (UsingShadowDecl
*UD
= dyn_cast
<UsingShadowDecl
>(ND
))
753 ND
= UD
->getTargetDecl();
754 else if (ObjCCompatibleAliasDecl
*AD
755 = dyn_cast
<ObjCCompatibleAliasDecl
>(ND
))
756 return AD
->getClassInterface();
762 bool NamedDecl::isCXXInstanceMember() const {
763 assert(isCXXClassMember() &&
764 "checking whether non-member is instance member");
766 const NamedDecl
*D
= this;
767 if (isa
<UsingShadowDecl
>(D
))
768 D
= cast
<UsingShadowDecl
>(D
)->getTargetDecl();
770 if (isa
<FieldDecl
>(D
))
772 if (isa
<CXXMethodDecl
>(D
))
773 return cast
<CXXMethodDecl
>(D
)->isInstance();
774 if (isa
<FunctionTemplateDecl
>(D
))
775 return cast
<CXXMethodDecl
>(cast
<FunctionTemplateDecl
>(D
)
776 ->getTemplatedDecl())->isInstance();
780 //===----------------------------------------------------------------------===//
781 // DeclaratorDecl Implementation
782 //===----------------------------------------------------------------------===//
784 template <typename DeclT
>
785 static SourceLocation
getTemplateOrInnerLocStart(const DeclT
*decl
) {
786 if (decl
->getNumTemplateParameterLists() > 0)
787 return decl
->getTemplateParameterList(0)->getTemplateLoc();
789 return decl
->getInnerLocStart();
792 SourceLocation
DeclaratorDecl::getTypeSpecStartLoc() const {
793 TypeSourceInfo
*TSI
= getTypeSourceInfo();
794 if (TSI
) return TSI
->getTypeLoc().getBeginLoc();
795 return SourceLocation();
798 void DeclaratorDecl::setQualifierInfo(NestedNameSpecifier
*Qualifier
,
799 SourceRange QualifierRange
) {
801 // Make sure the extended decl info is allocated.
803 // Save (non-extended) type source info pointer.
804 TypeSourceInfo
*savedTInfo
= DeclInfo
.get
<TypeSourceInfo
*>();
805 // Allocate external info struct.
806 DeclInfo
= new (getASTContext()) ExtInfo
;
807 // Restore savedTInfo into (extended) decl info.
808 getExtInfo()->TInfo
= savedTInfo
;
810 // Set qualifier info.
811 getExtInfo()->NNS
= Qualifier
;
812 getExtInfo()->NNSRange
= QualifierRange
;
815 // Here Qualifier == 0, i.e., we are removing the qualifier (if any).
816 assert(QualifierRange
.isInvalid());
818 // Save type source info pointer.
819 TypeSourceInfo
*savedTInfo
= getExtInfo()->TInfo
;
820 // Deallocate the extended decl info.
821 getASTContext().Deallocate(getExtInfo());
822 // Restore savedTInfo into (non-extended) decl info.
823 DeclInfo
= savedTInfo
;
828 SourceLocation
DeclaratorDecl::getOuterLocStart() const {
829 return getTemplateOrInnerLocStart(this);
833 QualifierInfo::setTemplateParameterListsInfo(ASTContext
&Context
,
835 TemplateParameterList
**TPLists
) {
836 assert((NumTPLists
== 0 || TPLists
!= 0) &&
837 "Empty array of template parameters with positive size!");
838 assert((NumTPLists
== 0 || NNS
) &&
839 "Nonempty array of template parameters with no qualifier!");
841 // Free previous template parameters (if any).
842 if (NumTemplParamLists
> 0) {
843 Context
.Deallocate(TemplParamLists
);
845 NumTemplParamLists
= 0;
847 // Set info on matched template parameter lists (if any).
848 if (NumTPLists
> 0) {
849 TemplParamLists
= new (Context
) TemplateParameterList
*[NumTPLists
];
850 NumTemplParamLists
= NumTPLists
;
851 for (unsigned i
= NumTPLists
; i
-- > 0; )
852 TemplParamLists
[i
] = TPLists
[i
];
856 //===----------------------------------------------------------------------===//
857 // VarDecl Implementation
858 //===----------------------------------------------------------------------===//
860 const char *VarDecl::getStorageClassSpecifierString(StorageClass SC
) {
863 case SC_Auto
: return "auto"; break;
864 case SC_Extern
: return "extern"; break;
865 case SC_PrivateExtern
: return "__private_extern__"; break;
866 case SC_Register
: return "register"; break;
867 case SC_Static
: return "static"; break;
870 assert(0 && "Invalid storage class");
874 VarDecl
*VarDecl::Create(ASTContext
&C
, DeclContext
*DC
, SourceLocation L
,
875 IdentifierInfo
*Id
, QualType T
, TypeSourceInfo
*TInfo
,
876 StorageClass S
, StorageClass SCAsWritten
) {
877 return new (C
) VarDecl(Var
, DC
, L
, Id
, T
, TInfo
, S
, SCAsWritten
);
880 SourceLocation
VarDecl::getInnerLocStart() const {
881 SourceLocation Start
= getTypeSpecStartLoc();
882 if (Start
.isInvalid())
883 Start
= getLocation();
887 SourceRange
VarDecl::getSourceRange() const {
889 return SourceRange(getOuterLocStart(), getInit()->getLocEnd());
890 return SourceRange(getOuterLocStart(), getLocation());
893 bool VarDecl::isExternC() const {
894 ASTContext
&Context
= getASTContext();
895 if (!Context
.getLangOptions().CPlusPlus
)
896 return (getDeclContext()->isTranslationUnit() &&
897 getStorageClass() != SC_Static
) ||
898 (getDeclContext()->isFunctionOrMethod() && hasExternalStorage());
900 for (const DeclContext
*DC
= getDeclContext(); !DC
->isTranslationUnit();
901 DC
= DC
->getParent()) {
902 if (const LinkageSpecDecl
*Linkage
= dyn_cast
<LinkageSpecDecl
>(DC
)) {
903 if (Linkage
->getLanguage() == LinkageSpecDecl::lang_c
)
904 return getStorageClass() != SC_Static
;
909 if (DC
->isFunctionOrMethod())
916 VarDecl
*VarDecl::getCanonicalDecl() {
917 return getFirstDeclaration();
920 VarDecl::DefinitionKind
VarDecl::isThisDeclarationADefinition() const {
921 // C++ [basic.def]p2:
922 // A declaration is a definition unless [...] it contains the 'extern'
923 // specifier or a linkage-specification and neither an initializer [...],
924 // it declares a static data member in a class declaration [...].
925 // C++ [temp.expl.spec]p15:
926 // An explicit specialization of a static data member of a template is a
927 // definition if the declaration includes an initializer; otherwise, it is
929 if (isStaticDataMember()) {
930 if (isOutOfLine() && (hasInit() ||
931 getTemplateSpecializationKind() != TSK_ExplicitSpecialization
))
934 return DeclarationOnly
;
937 // A definition of an identifier is a declaration for that identifier that
938 // [...] causes storage to be reserved for that object.
939 // Note: that applies for all non-file-scope objects.
941 // If the declaration of an identifier for an object has file scope and an
942 // initializer, the declaration is an external definition for the identifier
945 // AST for 'extern "C" int foo;' is annotated with 'extern'.
946 if (hasExternalStorage())
947 return DeclarationOnly
;
949 if (getStorageClassAsWritten() == SC_Extern
||
950 getStorageClassAsWritten() == SC_PrivateExtern
) {
951 for (const VarDecl
*PrevVar
= getPreviousDeclaration();
952 PrevVar
; PrevVar
= PrevVar
->getPreviousDeclaration()) {
953 if (PrevVar
->getLinkage() == InternalLinkage
&& PrevVar
->hasInit())
954 return DeclarationOnly
;
958 // A declaration of an object that has file scope without an initializer,
959 // and without a storage class specifier or the scs 'static', constitutes
960 // a tentative definition.
961 // No such thing in C++.
962 if (!getASTContext().getLangOptions().CPlusPlus
&& isFileVarDecl())
963 return TentativeDefinition
;
965 // What's left is (in C, block-scope) declarations without initializers or
966 // external storage. These are definitions.
970 VarDecl
*VarDecl::getActingDefinition() {
971 DefinitionKind Kind
= isThisDeclarationADefinition();
972 if (Kind
!= TentativeDefinition
)
975 VarDecl
*LastTentative
= 0;
976 VarDecl
*First
= getFirstDeclaration();
977 for (redecl_iterator I
= First
->redecls_begin(), E
= First
->redecls_end();
979 Kind
= (*I
)->isThisDeclarationADefinition();
980 if (Kind
== Definition
)
982 else if (Kind
== TentativeDefinition
)
985 return LastTentative
;
988 bool VarDecl::isTentativeDefinitionNow() const {
989 DefinitionKind Kind
= isThisDeclarationADefinition();
990 if (Kind
!= TentativeDefinition
)
993 for (redecl_iterator I
= redecls_begin(), E
= redecls_end(); I
!= E
; ++I
) {
994 if ((*I
)->isThisDeclarationADefinition() == Definition
)
1000 VarDecl
*VarDecl::getDefinition() {
1001 VarDecl
*First
= getFirstDeclaration();
1002 for (redecl_iterator I
= First
->redecls_begin(), E
= First
->redecls_end();
1004 if ((*I
)->isThisDeclarationADefinition() == Definition
)
1010 VarDecl::DefinitionKind
VarDecl::hasDefinition() const {
1011 DefinitionKind Kind
= DeclarationOnly
;
1013 const VarDecl
*First
= getFirstDeclaration();
1014 for (redecl_iterator I
= First
->redecls_begin(), E
= First
->redecls_end();
1016 Kind
= std::max(Kind
, (*I
)->isThisDeclarationADefinition());
1021 const Expr
*VarDecl::getAnyInitializer(const VarDecl
*&D
) const {
1022 redecl_iterator I
= redecls_begin(), E
= redecls_end();
1023 while (I
!= E
&& !I
->getInit())
1028 return I
->getInit();
1033 bool VarDecl::isOutOfLine() const {
1034 if (Decl::isOutOfLine())
1037 if (!isStaticDataMember())
1040 // If this static data member was instantiated from a static data member of
1041 // a class template, check whether that static data member was defined
1043 if (VarDecl
*VD
= getInstantiatedFromStaticDataMember())
1044 return VD
->isOutOfLine();
1049 VarDecl
*VarDecl::getOutOfLineDefinition() {
1050 if (!isStaticDataMember())
1053 for (VarDecl::redecl_iterator RD
= redecls_begin(), RDEnd
= redecls_end();
1054 RD
!= RDEnd
; ++RD
) {
1055 if (RD
->getLexicalDeclContext()->isFileContext())
1062 void VarDecl::setInit(Expr
*I
) {
1063 if (EvaluatedStmt
*Eval
= Init
.dyn_cast
<EvaluatedStmt
*>()) {
1064 Eval
->~EvaluatedStmt();
1065 getASTContext().Deallocate(Eval
);
1071 VarDecl
*VarDecl::getInstantiatedFromStaticDataMember() const {
1072 if (MemberSpecializationInfo
*MSI
= getMemberSpecializationInfo())
1073 return cast
<VarDecl
>(MSI
->getInstantiatedFrom());
1078 TemplateSpecializationKind
VarDecl::getTemplateSpecializationKind() const {
1079 if (MemberSpecializationInfo
*MSI
= getMemberSpecializationInfo())
1080 return MSI
->getTemplateSpecializationKind();
1082 return TSK_Undeclared
;
1085 MemberSpecializationInfo
*VarDecl::getMemberSpecializationInfo() const {
1086 return getASTContext().getInstantiatedFromStaticDataMember(this);
1089 void VarDecl::setTemplateSpecializationKind(TemplateSpecializationKind TSK
,
1090 SourceLocation PointOfInstantiation
) {
1091 MemberSpecializationInfo
*MSI
= getMemberSpecializationInfo();
1092 assert(MSI
&& "Not an instantiated static data member?");
1093 MSI
->setTemplateSpecializationKind(TSK
);
1094 if (TSK
!= TSK_ExplicitSpecialization
&&
1095 PointOfInstantiation
.isValid() &&
1096 MSI
->getPointOfInstantiation().isInvalid())
1097 MSI
->setPointOfInstantiation(PointOfInstantiation
);
1100 //===----------------------------------------------------------------------===//
1101 // ParmVarDecl Implementation
1102 //===----------------------------------------------------------------------===//
1104 ParmVarDecl
*ParmVarDecl::Create(ASTContext
&C
, DeclContext
*DC
,
1105 SourceLocation L
, IdentifierInfo
*Id
,
1106 QualType T
, TypeSourceInfo
*TInfo
,
1107 StorageClass S
, StorageClass SCAsWritten
,
1109 return new (C
) ParmVarDecl(ParmVar
, DC
, L
, Id
, T
, TInfo
,
1110 S
, SCAsWritten
, DefArg
);
1113 Expr
*ParmVarDecl::getDefaultArg() {
1114 assert(!hasUnparsedDefaultArg() && "Default argument is not yet parsed!");
1115 assert(!hasUninstantiatedDefaultArg() &&
1116 "Default argument is not yet instantiated!");
1118 Expr
*Arg
= getInit();
1119 if (CXXExprWithTemporaries
*E
= dyn_cast_or_null
<CXXExprWithTemporaries
>(Arg
))
1120 return E
->getSubExpr();
1125 unsigned ParmVarDecl::getNumDefaultArgTemporaries() const {
1126 if (const CXXExprWithTemporaries
*E
=
1127 dyn_cast
<CXXExprWithTemporaries
>(getInit()))
1128 return E
->getNumTemporaries();
1133 CXXTemporary
*ParmVarDecl::getDefaultArgTemporary(unsigned i
) {
1134 assert(getNumDefaultArgTemporaries() &&
1135 "Default arguments does not have any temporaries!");
1137 CXXExprWithTemporaries
*E
= cast
<CXXExprWithTemporaries
>(getInit());
1138 return E
->getTemporary(i
);
1141 SourceRange
ParmVarDecl::getDefaultArgRange() const {
1142 if (const Expr
*E
= getInit())
1143 return E
->getSourceRange();
1145 if (hasUninstantiatedDefaultArg())
1146 return getUninstantiatedDefaultArg()->getSourceRange();
1148 return SourceRange();
1151 //===----------------------------------------------------------------------===//
1152 // FunctionDecl Implementation
1153 //===----------------------------------------------------------------------===//
1155 void FunctionDecl::getNameForDiagnostic(std::string
&S
,
1156 const PrintingPolicy
&Policy
,
1157 bool Qualified
) const {
1158 NamedDecl::getNameForDiagnostic(S
, Policy
, Qualified
);
1159 const TemplateArgumentList
*TemplateArgs
= getTemplateSpecializationArgs();
1161 S
+= TemplateSpecializationType::PrintTemplateArgumentList(
1162 TemplateArgs
->getFlatArgumentList(),
1163 TemplateArgs
->flat_size(),
1168 bool FunctionDecl::isVariadic() const {
1169 if (const FunctionProtoType
*FT
= getType()->getAs
<FunctionProtoType
>())
1170 return FT
->isVariadic();
1174 bool FunctionDecl::hasBody(const FunctionDecl
*&Definition
) const {
1175 for (redecl_iterator I
= redecls_begin(), E
= redecls_end(); I
!= E
; ++I
) {
1185 Stmt
*FunctionDecl::getBody(const FunctionDecl
*&Definition
) const {
1186 for (redecl_iterator I
= redecls_begin(), E
= redecls_end(); I
!= E
; ++I
) {
1189 return I
->Body
.get(getASTContext().getExternalSource());
1196 void FunctionDecl::setBody(Stmt
*B
) {
1199 EndRangeLoc
= B
->getLocEnd();
1202 void FunctionDecl::setPure(bool P
) {
1205 if (CXXRecordDecl
*Parent
= dyn_cast
<CXXRecordDecl
>(getDeclContext()))
1206 Parent
->markedVirtualFunctionPure();
1209 bool FunctionDecl::isMain() const {
1210 ASTContext
&Context
= getASTContext();
1211 return !Context
.getLangOptions().Freestanding
&&
1212 getDeclContext()->getRedeclContext()->isTranslationUnit() &&
1213 getIdentifier() && getIdentifier()->isStr("main");
1216 bool FunctionDecl::isExternC() const {
1217 ASTContext
&Context
= getASTContext();
1218 // In C, any non-static, non-overloadable function has external
1220 if (!Context
.getLangOptions().CPlusPlus
)
1221 return getStorageClass() != SC_Static
&& !getAttr
<OverloadableAttr
>();
1223 for (const DeclContext
*DC
= getDeclContext(); !DC
->isTranslationUnit();
1224 DC
= DC
->getParent()) {
1225 if (const LinkageSpecDecl
*Linkage
= dyn_cast
<LinkageSpecDecl
>(DC
)) {
1226 if (Linkage
->getLanguage() == LinkageSpecDecl::lang_c
)
1227 return getStorageClass() != SC_Static
&&
1228 !getAttr
<OverloadableAttr
>();
1240 bool FunctionDecl::isGlobal() const {
1241 if (const CXXMethodDecl
*Method
= dyn_cast
<CXXMethodDecl
>(this))
1242 return Method
->isStatic();
1244 if (getStorageClass() == SC_Static
)
1247 for (const DeclContext
*DC
= getDeclContext();
1249 DC
= DC
->getParent()) {
1250 if (const NamespaceDecl
*Namespace
= cast
<NamespaceDecl
>(DC
)) {
1251 if (!Namespace
->getDeclName())
1261 FunctionDecl::setPreviousDeclaration(FunctionDecl
*PrevDecl
) {
1262 redeclarable_base::setPreviousDeclaration(PrevDecl
);
1264 if (FunctionTemplateDecl
*FunTmpl
= getDescribedFunctionTemplate()) {
1265 FunctionTemplateDecl
*PrevFunTmpl
1266 = PrevDecl
? PrevDecl
->getDescribedFunctionTemplate() : 0;
1267 assert((!PrevDecl
|| PrevFunTmpl
) && "Function/function template mismatch");
1268 FunTmpl
->setPreviousDeclaration(PrevFunTmpl
);
1272 const FunctionDecl
*FunctionDecl::getCanonicalDecl() const {
1273 return getFirstDeclaration();
1276 FunctionDecl
*FunctionDecl::getCanonicalDecl() {
1277 return getFirstDeclaration();
1280 /// \brief Returns a value indicating whether this function
1281 /// corresponds to a builtin function.
1283 /// The function corresponds to a built-in function if it is
1284 /// declared at translation scope or within an extern "C" block and
1285 /// its name matches with the name of a builtin. The returned value
1286 /// will be 0 for functions that do not correspond to a builtin, a
1287 /// value of type \c Builtin::ID if in the target-independent range
1288 /// \c [1,Builtin::First), or a target-specific builtin value.
1289 unsigned FunctionDecl::getBuiltinID() const {
1290 ASTContext
&Context
= getASTContext();
1291 if (!getIdentifier() || !getIdentifier()->getBuiltinID())
1294 unsigned BuiltinID
= getIdentifier()->getBuiltinID();
1295 if (!Context
.BuiltinInfo
.isPredefinedLibFunction(BuiltinID
))
1298 // This function has the name of a known C library
1299 // function. Determine whether it actually refers to the C library
1300 // function or whether it just has the same name.
1302 // If this is a static function, it's not a builtin.
1303 if (getStorageClass() == SC_Static
)
1306 // If this function is at translation-unit scope and we're not in
1307 // C++, it refers to the C library function.
1308 if (!Context
.getLangOptions().CPlusPlus
&&
1309 getDeclContext()->isTranslationUnit())
1312 // If the function is in an extern "C" linkage specification and is
1313 // not marked "overloadable", it's the real function.
1314 if (isa
<LinkageSpecDecl
>(getDeclContext()) &&
1315 cast
<LinkageSpecDecl
>(getDeclContext())->getLanguage()
1316 == LinkageSpecDecl::lang_c
&&
1317 !getAttr
<OverloadableAttr
>())
1325 /// getNumParams - Return the number of parameters this function must have
1326 /// based on its FunctionType. This is the length of the PararmInfo array
1327 /// after it has been created.
1328 unsigned FunctionDecl::getNumParams() const {
1329 const FunctionType
*FT
= getType()->getAs
<FunctionType
>();
1330 if (isa
<FunctionNoProtoType
>(FT
))
1332 return cast
<FunctionProtoType
>(FT
)->getNumArgs();
1336 void FunctionDecl::setParams(ASTContext
&C
,
1337 ParmVarDecl
**NewParamInfo
, unsigned NumParams
) {
1338 assert(ParamInfo
== 0 && "Already has param info!");
1339 assert(NumParams
== getNumParams() && "Parameter count mismatch!");
1341 // Zero params -> null pointer.
1343 void *Mem
= C
.Allocate(sizeof(ParmVarDecl
*)*NumParams
);
1344 ParamInfo
= new (Mem
) ParmVarDecl
*[NumParams
];
1345 memcpy(ParamInfo
, NewParamInfo
, sizeof(ParmVarDecl
*)*NumParams
);
1347 // Update source range. The check below allows us to set EndRangeLoc before
1348 // setting the parameters.
1349 if (EndRangeLoc
.isInvalid() || EndRangeLoc
== getLocation())
1350 EndRangeLoc
= NewParamInfo
[NumParams
-1]->getLocEnd();
1354 /// getMinRequiredArguments - Returns the minimum number of arguments
1355 /// needed to call this function. This may be fewer than the number of
1356 /// function parameters, if some of the parameters have default
1357 /// arguments (in C++).
1358 unsigned FunctionDecl::getMinRequiredArguments() const {
1359 unsigned NumRequiredArgs
= getNumParams();
1360 while (NumRequiredArgs
> 0
1361 && getParamDecl(NumRequiredArgs
-1)->hasDefaultArg())
1364 return NumRequiredArgs
;
1367 bool FunctionDecl::isInlined() const {
1368 // FIXME: This is not enough. Consider:
1373 // f is inlined, but does not have inline specified.
1374 // To fix this we should add an 'inline' flag to FunctionDecl.
1375 if (isInlineSpecified())
1378 if (isa
<CXXMethodDecl
>(this)) {
1379 if (!isOutOfLine() || getCanonicalDecl()->isInlineSpecified())
1383 switch (getTemplateSpecializationKind()) {
1384 case TSK_Undeclared
:
1385 case TSK_ExplicitSpecialization
:
1388 case TSK_ImplicitInstantiation
:
1389 case TSK_ExplicitInstantiationDeclaration
:
1390 case TSK_ExplicitInstantiationDefinition
:
1395 const FunctionDecl
*PatternDecl
= getTemplateInstantiationPattern();
1396 bool HasPattern
= false;
1398 HasPattern
= PatternDecl
->hasBody(PatternDecl
);
1400 if (HasPattern
&& PatternDecl
)
1401 return PatternDecl
->isInlined();
1406 /// \brief For an inline function definition in C or C++, determine whether the
1407 /// definition will be externally visible.
1409 /// Inline function definitions are always available for inlining optimizations.
1410 /// However, depending on the language dialect, declaration specifiers, and
1411 /// attributes, the definition of an inline function may or may not be
1412 /// "externally" visible to other translation units in the program.
1414 /// In C99, inline definitions are not externally visible by default. However,
1415 /// if even one of the global-scope declarations is marked "extern inline", the
1416 /// inline definition becomes externally visible (C99 6.7.4p6).
1418 /// In GNU89 mode, or if the gnu_inline attribute is attached to the function
1419 /// definition, we use the GNU semantics for inline, which are nearly the
1420 /// opposite of C99 semantics. In particular, "inline" by itself will create
1421 /// an externally visible symbol, but "extern inline" will not create an
1422 /// externally visible symbol.
1423 bool FunctionDecl::isInlineDefinitionExternallyVisible() const {
1424 assert(isThisDeclarationADefinition() && "Must have the function definition");
1425 assert(isInlined() && "Function must be inline");
1426 ASTContext
&Context
= getASTContext();
1428 if (!Context
.getLangOptions().C99
|| hasAttr
<GNUInlineAttr
>()) {
1429 // GNU inline semantics. Based on a number of examples, we came up with the
1430 // following heuristic: if the "inline" keyword is present on a
1431 // declaration of the function but "extern" is not present on that
1432 // declaration, then the symbol is externally visible. Otherwise, the GNU
1433 // "extern inline" semantics applies and the symbol is not externally
1435 for (redecl_iterator Redecl
= redecls_begin(), RedeclEnd
= redecls_end();
1436 Redecl
!= RedeclEnd
;
1438 if (Redecl
->isInlineSpecified() && Redecl
->getStorageClass() != SC_Extern
)
1442 // GNU "extern inline" semantics; no externally visible symbol.
1447 // [...] If all of the file scope declarations for a function in a
1448 // translation unit include the inline function specifier without extern,
1449 // then the definition in that translation unit is an inline definition.
1450 for (redecl_iterator Redecl
= redecls_begin(), RedeclEnd
= redecls_end();
1451 Redecl
!= RedeclEnd
;
1453 // Only consider file-scope declarations in this test.
1454 if (!Redecl
->getLexicalDeclContext()->isTranslationUnit())
1457 if (!Redecl
->isInlineSpecified() || Redecl
->getStorageClass() == SC_Extern
)
1458 return true; // Not an inline definition
1462 // An inline definition does not provide an external definition for the
1463 // function, and does not forbid an external definition in another
1464 // translation unit.
1468 /// getOverloadedOperator - Which C++ overloaded operator this
1469 /// function represents, if any.
1470 OverloadedOperatorKind
FunctionDecl::getOverloadedOperator() const {
1471 if (getDeclName().getNameKind() == DeclarationName::CXXOperatorName
)
1472 return getDeclName().getCXXOverloadedOperator();
1477 /// getLiteralIdentifier - The literal suffix identifier this function
1478 /// represents, if any.
1479 const IdentifierInfo
*FunctionDecl::getLiteralIdentifier() const {
1480 if (getDeclName().getNameKind() == DeclarationName::CXXLiteralOperatorName
)
1481 return getDeclName().getCXXLiteralIdentifier();
1486 FunctionDecl::TemplatedKind
FunctionDecl::getTemplatedKind() const {
1487 if (TemplateOrSpecialization
.isNull())
1488 return TK_NonTemplate
;
1489 if (TemplateOrSpecialization
.is
<FunctionTemplateDecl
*>())
1490 return TK_FunctionTemplate
;
1491 if (TemplateOrSpecialization
.is
<MemberSpecializationInfo
*>())
1492 return TK_MemberSpecialization
;
1493 if (TemplateOrSpecialization
.is
<FunctionTemplateSpecializationInfo
*>())
1494 return TK_FunctionTemplateSpecialization
;
1495 if (TemplateOrSpecialization
.is
1496 <DependentFunctionTemplateSpecializationInfo
*>())
1497 return TK_DependentFunctionTemplateSpecialization
;
1499 assert(false && "Did we miss a TemplateOrSpecialization type?");
1500 return TK_NonTemplate
;
1503 FunctionDecl
*FunctionDecl::getInstantiatedFromMemberFunction() const {
1504 if (MemberSpecializationInfo
*Info
= getMemberSpecializationInfo())
1505 return cast
<FunctionDecl
>(Info
->getInstantiatedFrom());
1510 MemberSpecializationInfo
*FunctionDecl::getMemberSpecializationInfo() const {
1511 return TemplateOrSpecialization
.dyn_cast
<MemberSpecializationInfo
*>();
1515 FunctionDecl::setInstantiationOfMemberFunction(ASTContext
&C
,
1517 TemplateSpecializationKind TSK
) {
1518 assert(TemplateOrSpecialization
.isNull() &&
1519 "Member function is already a specialization");
1520 MemberSpecializationInfo
*Info
1521 = new (C
) MemberSpecializationInfo(FD
, TSK
);
1522 TemplateOrSpecialization
= Info
;
1525 bool FunctionDecl::isImplicitlyInstantiable() const {
1526 // If the function is invalid, it can't be implicitly instantiated.
1527 if (isInvalidDecl())
1530 switch (getTemplateSpecializationKind()) {
1531 case TSK_Undeclared
:
1532 case TSK_ExplicitSpecialization
:
1533 case TSK_ExplicitInstantiationDefinition
:
1536 case TSK_ImplicitInstantiation
:
1539 case TSK_ExplicitInstantiationDeclaration
:
1544 // Find the actual template from which we will instantiate.
1545 const FunctionDecl
*PatternDecl
= getTemplateInstantiationPattern();
1546 bool HasPattern
= false;
1548 HasPattern
= PatternDecl
->hasBody(PatternDecl
);
1550 // C++0x [temp.explicit]p9:
1551 // Except for inline functions, other explicit instantiation declarations
1552 // have the effect of suppressing the implicit instantiation of the entity
1553 // to which they refer.
1554 if (!HasPattern
|| !PatternDecl
)
1557 return PatternDecl
->isInlined();
1560 FunctionDecl
*FunctionDecl::getTemplateInstantiationPattern() const {
1561 if (FunctionTemplateDecl
*Primary
= getPrimaryTemplate()) {
1562 while (Primary
->getInstantiatedFromMemberTemplate()) {
1563 // If we have hit a point where the user provided a specialization of
1564 // this template, we're done looking.
1565 if (Primary
->isMemberSpecialization())
1568 Primary
= Primary
->getInstantiatedFromMemberTemplate();
1571 return Primary
->getTemplatedDecl();
1574 return getInstantiatedFromMemberFunction();
1577 FunctionTemplateDecl
*FunctionDecl::getPrimaryTemplate() const {
1578 if (FunctionTemplateSpecializationInfo
*Info
1579 = TemplateOrSpecialization
1580 .dyn_cast
<FunctionTemplateSpecializationInfo
*>()) {
1581 return Info
->Template
.getPointer();
1586 const TemplateArgumentList
*
1587 FunctionDecl::getTemplateSpecializationArgs() const {
1588 if (FunctionTemplateSpecializationInfo
*Info
1589 = TemplateOrSpecialization
1590 .dyn_cast
<FunctionTemplateSpecializationInfo
*>()) {
1591 return Info
->TemplateArguments
;
1596 const TemplateArgumentListInfo
*
1597 FunctionDecl::getTemplateSpecializationArgsAsWritten() const {
1598 if (FunctionTemplateSpecializationInfo
*Info
1599 = TemplateOrSpecialization
1600 .dyn_cast
<FunctionTemplateSpecializationInfo
*>()) {
1601 return Info
->TemplateArgumentsAsWritten
;
1607 FunctionDecl::setFunctionTemplateSpecialization(ASTContext
&C
,
1608 FunctionTemplateDecl
*Template
,
1609 const TemplateArgumentList
*TemplateArgs
,
1611 TemplateSpecializationKind TSK
,
1612 const TemplateArgumentListInfo
*TemplateArgsAsWritten
,
1613 SourceLocation PointOfInstantiation
) {
1614 assert(TSK
!= TSK_Undeclared
&&
1615 "Must specify the type of function template specialization");
1616 FunctionTemplateSpecializationInfo
*Info
1617 = TemplateOrSpecialization
.dyn_cast
<FunctionTemplateSpecializationInfo
*>();
1619 Info
= FunctionTemplateSpecializationInfo::Create(C
, this, Template
, TSK
,
1621 TemplateArgsAsWritten
,
1622 PointOfInstantiation
);
1623 TemplateOrSpecialization
= Info
;
1625 // Insert this function template specialization into the set of known
1626 // function template specializations.
1628 Template
->getSpecializations().InsertNode(Info
, InsertPos
);
1630 // Try to insert the new node. If there is an existing node, leave it, the
1631 // set will contain the canonical decls while
1632 // FunctionTemplateDecl::findSpecialization will return
1633 // the most recent redeclarations.
1634 FunctionTemplateSpecializationInfo
*Existing
1635 = Template
->getSpecializations().GetOrInsertNode(Info
);
1637 assert((!Existing
|| Existing
->Function
->isCanonicalDecl()) &&
1638 "Set is supposed to only contain canonical decls");
1643 FunctionDecl::setDependentTemplateSpecialization(ASTContext
&Context
,
1644 const UnresolvedSetImpl
&Templates
,
1645 const TemplateArgumentListInfo
&TemplateArgs
) {
1646 assert(TemplateOrSpecialization
.isNull());
1647 size_t Size
= sizeof(DependentFunctionTemplateSpecializationInfo
);
1648 Size
+= Templates
.size() * sizeof(FunctionTemplateDecl
*);
1649 Size
+= TemplateArgs
.size() * sizeof(TemplateArgumentLoc
);
1650 void *Buffer
= Context
.Allocate(Size
);
1651 DependentFunctionTemplateSpecializationInfo
*Info
=
1652 new (Buffer
) DependentFunctionTemplateSpecializationInfo(Templates
,
1654 TemplateOrSpecialization
= Info
;
1657 DependentFunctionTemplateSpecializationInfo::
1658 DependentFunctionTemplateSpecializationInfo(const UnresolvedSetImpl
&Ts
,
1659 const TemplateArgumentListInfo
&TArgs
)
1660 : AngleLocs(TArgs
.getLAngleLoc(), TArgs
.getRAngleLoc()) {
1662 d
.NumTemplates
= Ts
.size();
1663 d
.NumArgs
= TArgs
.size();
1665 FunctionTemplateDecl
**TsArray
=
1666 const_cast<FunctionTemplateDecl
**>(getTemplates());
1667 for (unsigned I
= 0, E
= Ts
.size(); I
!= E
; ++I
)
1668 TsArray
[I
] = cast
<FunctionTemplateDecl
>(Ts
[I
]->getUnderlyingDecl());
1670 TemplateArgumentLoc
*ArgsArray
=
1671 const_cast<TemplateArgumentLoc
*>(getTemplateArgs());
1672 for (unsigned I
= 0, E
= TArgs
.size(); I
!= E
; ++I
)
1673 new (&ArgsArray
[I
]) TemplateArgumentLoc(TArgs
[I
]);
1676 TemplateSpecializationKind
FunctionDecl::getTemplateSpecializationKind() const {
1677 // For a function template specialization, query the specialization
1678 // information object.
1679 FunctionTemplateSpecializationInfo
*FTSInfo
1680 = TemplateOrSpecialization
.dyn_cast
<FunctionTemplateSpecializationInfo
*>();
1682 return FTSInfo
->getTemplateSpecializationKind();
1684 MemberSpecializationInfo
*MSInfo
1685 = TemplateOrSpecialization
.dyn_cast
<MemberSpecializationInfo
*>();
1687 return MSInfo
->getTemplateSpecializationKind();
1689 return TSK_Undeclared
;
1693 FunctionDecl::setTemplateSpecializationKind(TemplateSpecializationKind TSK
,
1694 SourceLocation PointOfInstantiation
) {
1695 if (FunctionTemplateSpecializationInfo
*FTSInfo
1696 = TemplateOrSpecialization
.dyn_cast
<
1697 FunctionTemplateSpecializationInfo
*>()) {
1698 FTSInfo
->setTemplateSpecializationKind(TSK
);
1699 if (TSK
!= TSK_ExplicitSpecialization
&&
1700 PointOfInstantiation
.isValid() &&
1701 FTSInfo
->getPointOfInstantiation().isInvalid())
1702 FTSInfo
->setPointOfInstantiation(PointOfInstantiation
);
1703 } else if (MemberSpecializationInfo
*MSInfo
1704 = TemplateOrSpecialization
.dyn_cast
<MemberSpecializationInfo
*>()) {
1705 MSInfo
->setTemplateSpecializationKind(TSK
);
1706 if (TSK
!= TSK_ExplicitSpecialization
&&
1707 PointOfInstantiation
.isValid() &&
1708 MSInfo
->getPointOfInstantiation().isInvalid())
1709 MSInfo
->setPointOfInstantiation(PointOfInstantiation
);
1711 assert(false && "Function cannot have a template specialization kind");
1714 SourceLocation
FunctionDecl::getPointOfInstantiation() const {
1715 if (FunctionTemplateSpecializationInfo
*FTSInfo
1716 = TemplateOrSpecialization
.dyn_cast
<
1717 FunctionTemplateSpecializationInfo
*>())
1718 return FTSInfo
->getPointOfInstantiation();
1719 else if (MemberSpecializationInfo
*MSInfo
1720 = TemplateOrSpecialization
.dyn_cast
<MemberSpecializationInfo
*>())
1721 return MSInfo
->getPointOfInstantiation();
1723 return SourceLocation();
1726 bool FunctionDecl::isOutOfLine() const {
1727 if (Decl::isOutOfLine())
1730 // If this function was instantiated from a member function of a
1731 // class template, check whether that member function was defined out-of-line.
1732 if (FunctionDecl
*FD
= getInstantiatedFromMemberFunction()) {
1733 const FunctionDecl
*Definition
;
1734 if (FD
->hasBody(Definition
))
1735 return Definition
->isOutOfLine();
1738 // If this function was instantiated from a function template,
1739 // check whether that function template was defined out-of-line.
1740 if (FunctionTemplateDecl
*FunTmpl
= getPrimaryTemplate()) {
1741 const FunctionDecl
*Definition
;
1742 if (FunTmpl
->getTemplatedDecl()->hasBody(Definition
))
1743 return Definition
->isOutOfLine();
1749 //===----------------------------------------------------------------------===//
1750 // FieldDecl Implementation
1751 //===----------------------------------------------------------------------===//
1753 FieldDecl
*FieldDecl::Create(ASTContext
&C
, DeclContext
*DC
, SourceLocation L
,
1754 IdentifierInfo
*Id
, QualType T
,
1755 TypeSourceInfo
*TInfo
, Expr
*BW
, bool Mutable
) {
1756 return new (C
) FieldDecl(Decl::Field
, DC
, L
, Id
, T
, TInfo
, BW
, Mutable
);
1759 bool FieldDecl::isAnonymousStructOrUnion() const {
1760 if (!isImplicit() || getDeclName())
1763 if (const RecordType
*Record
= getType()->getAs
<RecordType
>())
1764 return Record
->getDecl()->isAnonymousStructOrUnion();
1769 //===----------------------------------------------------------------------===//
1770 // TagDecl Implementation
1771 //===----------------------------------------------------------------------===//
1773 SourceLocation
TagDecl::getOuterLocStart() const {
1774 return getTemplateOrInnerLocStart(this);
1777 SourceRange
TagDecl::getSourceRange() const {
1778 SourceLocation E
= RBraceLoc
.isValid() ? RBraceLoc
: getLocation();
1779 return SourceRange(getOuterLocStart(), E
);
1782 TagDecl
* TagDecl::getCanonicalDecl() {
1783 return getFirstDeclaration();
1786 void TagDecl::setTypedefForAnonDecl(TypedefDecl
*TDD
) {
1787 TypedefDeclOrQualifier
= TDD
;
1789 TypeForDecl
->ClearLinkageCache();
1792 void TagDecl::startDefinition() {
1793 IsBeingDefined
= true;
1795 if (isa
<CXXRecordDecl
>(this)) {
1796 CXXRecordDecl
*D
= cast
<CXXRecordDecl
>(this);
1797 struct CXXRecordDecl::DefinitionData
*Data
=
1798 new (getASTContext()) struct CXXRecordDecl::DefinitionData(D
);
1799 for (redecl_iterator I
= redecls_begin(), E
= redecls_end(); I
!= E
; ++I
)
1800 cast
<CXXRecordDecl
>(*I
)->DefinitionData
= Data
;
1804 void TagDecl::completeDefinition() {
1805 assert((!isa
<CXXRecordDecl
>(this) ||
1806 cast
<CXXRecordDecl
>(this)->hasDefinition()) &&
1807 "definition completed but not started");
1809 IsDefinition
= true;
1810 IsBeingDefined
= false;
1812 if (ASTMutationListener
*L
= getASTMutationListener())
1813 L
->CompletedTagDefinition(this);
1816 TagDecl
* TagDecl::getDefinition() const {
1818 return const_cast<TagDecl
*>(this);
1819 if (const CXXRecordDecl
*CXXRD
= dyn_cast
<CXXRecordDecl
>(this))
1820 return CXXRD
->getDefinition();
1822 for (redecl_iterator R
= redecls_begin(), REnd
= redecls_end();
1824 if (R
->isDefinition())
1830 void TagDecl::setQualifierInfo(NestedNameSpecifier
*Qualifier
,
1831 SourceRange QualifierRange
) {
1833 // Make sure the extended qualifier info is allocated.
1835 TypedefDeclOrQualifier
= new (getASTContext()) ExtInfo
;
1836 // Set qualifier info.
1837 getExtInfo()->NNS
= Qualifier
;
1838 getExtInfo()->NNSRange
= QualifierRange
;
1841 // Here Qualifier == 0, i.e., we are removing the qualifier (if any).
1842 assert(QualifierRange
.isInvalid());
1844 getASTContext().Deallocate(getExtInfo());
1845 TypedefDeclOrQualifier
= (TypedefDecl
*) 0;
1850 //===----------------------------------------------------------------------===//
1851 // EnumDecl Implementation
1852 //===----------------------------------------------------------------------===//
1854 EnumDecl
*EnumDecl::Create(ASTContext
&C
, DeclContext
*DC
, SourceLocation L
,
1855 IdentifierInfo
*Id
, SourceLocation TKL
,
1856 EnumDecl
*PrevDecl
, bool IsScoped
, bool IsFixed
) {
1857 EnumDecl
*Enum
= new (C
) EnumDecl(DC
, L
, Id
, PrevDecl
, TKL
,
1859 C
.getTypeDeclType(Enum
, PrevDecl
);
1863 EnumDecl
*EnumDecl::Create(ASTContext
&C
, EmptyShell Empty
) {
1864 return new (C
) EnumDecl(0, SourceLocation(), 0, 0, SourceLocation(),
1868 void EnumDecl::completeDefinition(QualType NewType
,
1869 QualType NewPromotionType
,
1870 unsigned NumPositiveBits
,
1871 unsigned NumNegativeBits
) {
1872 assert(!isDefinition() && "Cannot redefine enums!");
1874 IntegerType
= NewType
.getTypePtr();
1875 PromotionType
= NewPromotionType
;
1876 setNumPositiveBits(NumPositiveBits
);
1877 setNumNegativeBits(NumNegativeBits
);
1878 TagDecl::completeDefinition();
1881 //===----------------------------------------------------------------------===//
1882 // RecordDecl Implementation
1883 //===----------------------------------------------------------------------===//
1885 RecordDecl::RecordDecl(Kind DK
, TagKind TK
, DeclContext
*DC
, SourceLocation L
,
1886 IdentifierInfo
*Id
, RecordDecl
*PrevDecl
,
1888 : TagDecl(DK
, TK
, DC
, L
, Id
, PrevDecl
, TKL
) {
1889 HasFlexibleArrayMember
= false;
1890 AnonymousStructOrUnion
= false;
1891 HasObjectMember
= false;
1892 LoadedFieldsFromExternalStorage
= false;
1893 assert(classof(static_cast<Decl
*>(this)) && "Invalid Kind!");
1896 RecordDecl
*RecordDecl::Create(ASTContext
&C
, TagKind TK
, DeclContext
*DC
,
1897 SourceLocation L
, IdentifierInfo
*Id
,
1898 SourceLocation TKL
, RecordDecl
* PrevDecl
) {
1900 RecordDecl
* R
= new (C
) RecordDecl(Record
, TK
, DC
, L
, Id
, PrevDecl
, TKL
);
1901 C
.getTypeDeclType(R
, PrevDecl
);
1905 RecordDecl
*RecordDecl::Create(ASTContext
&C
, EmptyShell Empty
) {
1906 return new (C
) RecordDecl(Record
, TTK_Struct
, 0, SourceLocation(), 0, 0,
1910 bool RecordDecl::isInjectedClassName() const {
1911 return isImplicit() && getDeclName() && getDeclContext()->isRecord() &&
1912 cast
<RecordDecl
>(getDeclContext())->getDeclName() == getDeclName();
1915 RecordDecl::field_iterator
RecordDecl::field_begin() const {
1916 if (hasExternalLexicalStorage() && !LoadedFieldsFromExternalStorage
)
1917 LoadFieldsFromExternalStorage();
1919 return field_iterator(decl_iterator(FirstDecl
));
1922 /// completeDefinition - Notes that the definition of this type is now
1924 void RecordDecl::completeDefinition() {
1925 assert(!isDefinition() && "Cannot redefine record!");
1926 TagDecl::completeDefinition();
1929 ValueDecl
*RecordDecl::getAnonymousStructOrUnionObject() {
1930 // Force the decl chain to come into existence properly.
1931 if (!getNextDeclInContext()) getParent()->decls_begin();
1933 assert(isAnonymousStructOrUnion());
1934 ValueDecl
*D
= cast
<ValueDecl
>(getNextDeclInContext());
1935 assert(D
->getType()->isRecordType());
1936 assert(D
->getType()->getAs
<RecordType
>()->getDecl() == this);
1940 void RecordDecl::LoadFieldsFromExternalStorage() const {
1941 ExternalASTSource
*Source
= getASTContext().getExternalSource();
1942 assert(hasExternalLexicalStorage() && Source
&& "No external storage?");
1944 // Notify that we have a RecordDecl doing some initialization.
1945 ExternalASTSource::Deserializing
TheFields(Source
);
1947 llvm::SmallVector
<Decl
*, 64> Decls
;
1948 if (Source
->FindExternalLexicalDeclsBy
<FieldDecl
>(this, Decls
))
1952 // Check that all decls we got were FieldDecls.
1953 for (unsigned i
=0, e
=Decls
.size(); i
!= e
; ++i
)
1954 assert(isa
<FieldDecl
>(Decls
[i
]));
1957 LoadedFieldsFromExternalStorage
= true;
1962 llvm::tie(FirstDecl
, LastDecl
) = BuildDeclChain(Decls
);
1965 //===----------------------------------------------------------------------===//
1966 // BlockDecl Implementation
1967 //===----------------------------------------------------------------------===//
1969 void BlockDecl::setParams(ParmVarDecl
**NewParamInfo
,
1971 assert(ParamInfo
== 0 && "Already has param info!");
1973 // Zero params -> null pointer.
1976 void *Mem
= getASTContext().Allocate(sizeof(ParmVarDecl
*)*NumParams
);
1977 ParamInfo
= new (Mem
) ParmVarDecl
*[NumParams
];
1978 memcpy(ParamInfo
, NewParamInfo
, sizeof(ParmVarDecl
*)*NumParams
);
1982 unsigned BlockDecl::getNumParams() const {
1987 //===----------------------------------------------------------------------===//
1988 // Other Decl Allocation/Deallocation Method Implementations
1989 //===----------------------------------------------------------------------===//
1991 TranslationUnitDecl
*TranslationUnitDecl::Create(ASTContext
&C
) {
1992 return new (C
) TranslationUnitDecl(C
);
1995 NamespaceDecl
*NamespaceDecl::Create(ASTContext
&C
, DeclContext
*DC
,
1996 SourceLocation L
, IdentifierInfo
*Id
) {
1997 return new (C
) NamespaceDecl(DC
, L
, Id
);
2000 NamespaceDecl
*NamespaceDecl::getNextNamespace() {
2001 return dyn_cast_or_null
<NamespaceDecl
>(
2002 NextNamespace
.get(getASTContext().getExternalSource()));
2005 ImplicitParamDecl
*ImplicitParamDecl::Create(ASTContext
&C
, DeclContext
*DC
,
2006 SourceLocation L
, IdentifierInfo
*Id
, QualType T
) {
2007 return new (C
) ImplicitParamDecl(ImplicitParam
, DC
, L
, Id
, T
);
2010 FunctionDecl
*FunctionDecl::Create(ASTContext
&C
, DeclContext
*DC
,
2011 const DeclarationNameInfo
&NameInfo
,
2012 QualType T
, TypeSourceInfo
*TInfo
,
2013 StorageClass S
, StorageClass SCAsWritten
,
2014 bool isInline
, bool hasWrittenPrototype
) {
2015 FunctionDecl
*New
= new (C
) FunctionDecl(Function
, DC
, NameInfo
, T
, TInfo
,
2016 S
, SCAsWritten
, isInline
);
2017 New
->HasWrittenPrototype
= hasWrittenPrototype
;
2021 BlockDecl
*BlockDecl::Create(ASTContext
&C
, DeclContext
*DC
, SourceLocation L
) {
2022 return new (C
) BlockDecl(DC
, L
);
2025 EnumConstantDecl
*EnumConstantDecl::Create(ASTContext
&C
, EnumDecl
*CD
,
2027 IdentifierInfo
*Id
, QualType T
,
2028 Expr
*E
, const llvm::APSInt
&V
) {
2029 return new (C
) EnumConstantDecl(CD
, L
, Id
, T
, E
, V
);
2032 SourceRange
EnumConstantDecl::getSourceRange() const {
2033 SourceLocation End
= getLocation();
2035 End
= Init
->getLocEnd();
2036 return SourceRange(getLocation(), End
);
2039 TypedefDecl
*TypedefDecl::Create(ASTContext
&C
, DeclContext
*DC
,
2040 SourceLocation L
, IdentifierInfo
*Id
,
2041 TypeSourceInfo
*TInfo
) {
2042 return new (C
) TypedefDecl(DC
, L
, Id
, TInfo
);
2045 FileScopeAsmDecl
*FileScopeAsmDecl::Create(ASTContext
&C
, DeclContext
*DC
,
2047 StringLiteral
*Str
) {
2048 return new (C
) FileScopeAsmDecl(DC
, L
, Str
);