/// constructor, Objective-C selector, etc.)
DeclarationName Name;
- /// \brief Whether we have already cached linkage and visibility.
- mutable unsigned HasLinkageAndVisibilityCached : 1;
-
- /// \brief The cached visibility, if \c HasLinkageAndVisibilityCached is
- /// non-zero.
- mutable unsigned CachedVisibility : 2;
-
- /// \brief Whether the cached visibility was explicitly placed on this
- /// declaration.
- mutable unsigned CachedVisibilityIsExplicit : 1;
-
- /// \brief The cached linkage, if \c HasLinkageAndVisibilityCached is
- /// non-zero.
- mutable unsigned CachedLinkage : 2;
-
protected:
NamedDecl(Kind DK, DeclContext *DC, SourceLocation L, DeclarationName N)
- : Decl(DK, DC, L), Name(N), HasLinkageAndVisibilityCached(0) { }
-
+ : Decl(DK, DC, L), Name(N) { }
+
public:
/// getIdentifier - Get the identifier that names this declaration,
/// if there is one. This will return NULL if this declaration has
/// \brief Determines the linkage and visibility of this entity.
LinkageInfo getLinkageAndVisibility() const;
- /// \brief Clear the linkage and visibility cache in response to a change
- /// to the declaration.
- ///
- /// \param Redeclarations When true, we also have to clear out the linkage
- /// and visibility cache for all redeclarations.
- void ClearLinkageAndVisibilityCache();
-
/// \brief Looks through UsingDecls and ObjCCompatibleAliasDecls for
/// the underlying named decl.
NamedDecl *getUnderlyingDecl();
bool NRVOVariable : 1;
friend class StmtIteratorBase;
- friend class ASTDeclReader;
-
protected:
VarDecl(Kind DK, DeclContext *DC, SourceLocation L, IdentifierInfo *Id,
QualType T, TypeSourceInfo *TInfo, StorageClass SC,
StorageClass getStorageClassAsWritten() const {
return (StorageClass) SClassAsWritten;
}
- void setStorageClass(StorageClass SC);
+ void setStorageClass(StorageClass SC) {
+ assert(isLegalForVariable(SC));
+ SClass = SC;
+ }
void setStorageClassAsWritten(StorageClass SC) {
assert(isLegalForVariable(SC));
SClassAsWritten = SC;
}
StorageClass getStorageClass() const { return StorageClass(SClass); }
- void setStorageClass(StorageClass SC);
+ void setStorageClass(StorageClass SC) {
+ assert(isLegalForFunction(SC));
+ SClass = SC;
+ }
StorageClass getStorageClassAsWritten() const {
return StorageClass(SClassAsWritten);
return DB;
}
-template<typename decl_type>
-void Redeclarable<decl_type>::setPreviousDeclaration(decl_type *PrevDecl) {
- // Note: This routine is implemented here because we need both NamedDecl
- // and Redeclarable to be defined.
- decl_type *First;
-
- if (PrevDecl) {
- // Point to previous. Make sure that this is actually the most recent
- // redeclaration, or we can build invalid chains. If the most recent
- // redeclaration is invalid, it won't be PrevDecl, but we want it anyway.
- RedeclLink = PreviousDeclLink(llvm::cast<decl_type>(
- PrevDecl->getMostRecentDeclaration()));
- First = PrevDecl->getFirstDeclaration();
- assert(First->RedeclLink.NextIsLatest() && "Expected first");
- } else {
- // Make this first.
- First = static_cast<decl_type*>(this);
- }
-
- // First one will point to this one as latest.
- First->RedeclLink = LatestDeclLink(static_cast<decl_type*>(this));
-
- // If this declaration has a visibility attribute that differs from the
- // previous visibility attribute, or has private extern storage while the
- // previous declaration merely had extern storage, clear out the linkage and
- ///visibility cache. This is required because declarations after the first
- // declaration can change the visibility for all previous and future
- // declarations.
- if (NamedDecl *ND = dyn_cast<NamedDecl>(static_cast<decl_type*>(this))) {
- bool MustClear = false;
- if (VisibilityAttr *Visibility = ND->getAttr<VisibilityAttr>()) {
- VisibilityAttr *PrevVisibility
- = PrevDecl->template getAttr<VisibilityAttr>();
- if (!PrevVisibility ||
- PrevVisibility->getVisibility() != Visibility->getVisibility())
- MustClear = true;
- }
-
- if (!MustClear) {
- if (VarDecl *VD = dyn_cast<VarDecl>(ND)) {
- if (VD->getStorageClass() != cast<VarDecl>(PrevDecl)->getStorageClass())
- MustClear = true;
- } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
- FunctionDecl *PrevFD = cast<FunctionDecl>(PrevDecl);
- if (FD->getStorageClass() != PrevFD->getStorageClass())
- MustClear = true;
- else if (FD->isInlineSpecified() && !PrevFD->isInlined())
- MustClear = true;
- }
- }
-
- if (MustClear)
- ND->ClearLinkageAndVisibilityCache();
- }
-}
-
-
} // end namespace clang
#endif
return DeclCtx.get<DeclContext*>();
}
- /// Loc - The location of this decl.
+ /// Loc - The location that this decl.
SourceLocation Loc;
/// DeclKind - This indicates which class this is.
void swapAttrs(Decl *D);
void dropAttrs();
- void addAttr(Attr *A);
+ void addAttr(Attr *A) {
+ if (hasAttrs())
+ getAttrs().push_back(A);
+ else
+ setAttrs(AttrVec(1, A));
+ }
typedef AttrVec::const_iterator attr_iterator;
}
void setSpecializationKind(TemplateSpecializationKind TSK) {
- if (getSpecializationKind() != TSK)
- ClearLinkageAndVisibilityCache();
SpecializationKind = TSK;
}
/// \brief Set the previous declaration. If PrevDecl is NULL, set this as the
/// first and only declaration.
- void setPreviousDeclaration(decl_type *PrevDecl);
-
+ void setPreviousDeclaration(decl_type *PrevDecl) {
+ decl_type *First;
+
+ if (PrevDecl) {
+ // Point to previous. Make sure that this is actually the most recent
+ // redeclaration, or we can build invalid chains. If the most recent
+ // redeclaration is invalid, it won't be PrevDecl, but we want it anyway.
+ RedeclLink = PreviousDeclLink(llvm::cast<decl_type>(
+ PrevDecl->getMostRecentDeclaration()));
+ First = PrevDecl->getFirstDeclaration();
+ assert(First->RedeclLink.NextIsLatest() && "Expected first");
+ } else {
+ // Make this first.
+ First = static_cast<decl_type*>(this);
+ }
+
+ // First one will point to this one as latest.
+ First->RedeclLink = LatestDeclLink(static_cast<decl_type*>(this));
+ }
+
/// \brief Iterates through all the redeclarations of the same decl.
class redecl_iterator {
/// Current - The current declaration.
}
LinkageInfo NamedDecl::getLinkageAndVisibility() const {
- // If we have already cached linkage and visibility, just return the
- // cached information.
- if (HasLinkageAndVisibilityCached) {
-#ifndef NDEBUG
- LinkageInfo LI = getLVForDecl(this, LVFlags());
- assert(LI.visibility() == Visibility(CachedVisibility));
- assert(LI.visibilityExplicit() == CachedVisibilityIsExplicit);
- assert(LI.linkage() == Linkage(CachedLinkage));
-#endif
- return LinkageInfo(Linkage(CachedLinkage), Visibility(CachedVisibility),
- CachedVisibilityIsExplicit);
- }
-
- LinkageInfo LI = getLVForDecl(this, LVFlags());
- HasLinkageAndVisibilityCached = 1;
- CachedVisibility = LI.visibility();
- CachedVisibilityIsExplicit = LI.visibilityExplicit();
- CachedLinkage = LI.linkage();
- return LI;
-}
-
-void NamedDecl::ClearLinkageAndVisibilityCache() {
- HasLinkageAndVisibilityCached = 0;
-
- if (VarDecl *VD = dyn_cast<VarDecl>(this)) {
- for (VarDecl::redecl_iterator R = VD->redecls_begin(),
- REnd = VD->redecls_end();
- R != REnd; ++R)
- R->HasLinkageAndVisibilityCached = 0;
-
- return;
- }
-
- if (FunctionDecl *FD = dyn_cast<FunctionDecl>(this)) {
- for (FunctionDecl::redecl_iterator R = FD->redecls_begin(),
- REnd = FD->redecls_end();
- R != REnd; ++R)
- R->HasLinkageAndVisibilityCached = 0;
-
- return;
- }
-
- // Changing the linkage or visibility of a C++ class affect the linkage and
- // visibility of all of its members. Clear their caches, too.
- if (CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(this)) {
- for (DeclContext::decl_iterator D = RD->decls_begin(),
- DEnd = RD->decls_end();
- D != DEnd; ++D)
- if (NamedDecl *ND = dyn_cast<NamedDecl>(*D))
- ND->ClearLinkageAndVisibilityCache();
- }
+ return getLVForDecl(this, LVFlags());
}
static LinkageInfo getLVForDecl(const NamedDecl *D, LVFlags Flags) {
return new (C) VarDecl(Var, DC, L, Id, T, TInfo, S, SCAsWritten);
}
-void VarDecl::setStorageClass(StorageClass SC) {
- assert(isLegalForVariable(SC));
- if (getStorageClass() != SC)
- ClearLinkageAndVisibilityCache();
-
- SClass = SC;
-}
-
SourceLocation VarDecl::getInnerLocStart() const {
SourceLocation Start = getTypeSpecStartLoc();
if (Start.isInvalid())
PointOfInstantiation.isValid() &&
MSI->getPointOfInstantiation().isInvalid())
MSI->setPointOfInstantiation(PointOfInstantiation);
- ClearLinkageAndVisibilityCache();
}
//===----------------------------------------------------------------------===//
void FunctionDecl::setBody(Stmt *B) {
Body = B;
- if (B) {
+ if (B)
EndRangeLoc = B->getLocEnd();
- ClearLinkageAndVisibilityCache();
- }
}
void FunctionDecl::setPure(bool P) {
return getFirstDeclaration();
}
-void FunctionDecl::setStorageClass(StorageClass SC) {
- assert(isLegalForFunction(SC));
- if (getStorageClass() != SC)
- ClearLinkageAndVisibilityCache();
-
- SClass = SC;
-}
-
/// \brief Returns a value indicating whether this function
/// corresponds to a builtin function.
///
MSInfo->setPointOfInstantiation(PointOfInstantiation);
} else
assert(false && "Function cannot have a template specialization kind");
- ClearLinkageAndVisibilityCache();
}
SourceLocation FunctionDecl::getPointOfInstantiation() const {
TypedefDeclOrQualifier = TDD;
if (TypeForDecl)
TypeForDecl->ClearLinkageCache();
- ClearLinkageAndVisibilityCache();
}
void TagDecl::startDefinition() {
getASTContext().eraseDeclAttrs(this);
}
-void Decl::addAttr(Attr *A) {
- if (NamedDecl *ND = dyn_cast<NamedDecl>(this))
- if (VisibilityAttr *Visibility = dyn_cast<VisibilityAttr>(A)) {
- bool ClearVisibility = true;
- if (VarDecl *VD = dyn_cast<VarDecl>(this)) {
- if (VD->getPreviousDeclaration()) {
- VisibilityAttr *PrevVisibility
- = VD->getPreviousDeclaration()->getAttr<VisibilityAttr>();
- if (PrevVisibility &&
- PrevVisibility->getVisibility() == Visibility->getVisibility())
- ClearVisibility = false;
- }
- } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(this)) {
- if (FD->getPreviousDeclaration()) {
- VisibilityAttr *PrevVisibility
- = FD->getPreviousDeclaration()->getAttr<VisibilityAttr>();
- if (PrevVisibility &&
- PrevVisibility->getVisibility() == Visibility->getVisibility())
- ClearVisibility = false;
- }
- }
-
- if (ClearVisibility)
- ND->ClearLinkageAndVisibilityCache();
- }
-
- if (hasAttrs())
- getAttrs().push_back(A);
- else
- setAttrs(AttrVec(1, A));
-}
-
const AttrVec &Decl::getAttrs() const {
assert(HasAttrs && "No attrs to get!");
return getASTContext().getDeclAttrs(this);
}
if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) {
- if (MSInfo->getTemplateSpecializationKind() != TSK)
- ClearLinkageAndVisibilityCache();
MSInfo->setTemplateSpecializationKind(TSK);
return;
}
// FunctionDecl's body is handled last at ASTDeclReader::Visit,
// after everything else is read.
- FD->SClass = (StorageClass)Record[Idx++];
+ FD->setStorageClass((StorageClass)Record[Idx++]);
FD->setStorageClassAsWritten((StorageClass)Record[Idx++]);
FD->setInlineSpecified(Record[Idx++]);
FD->setVirtualAsWritten(Record[Idx++]);
void ASTDeclReader::VisitVarDecl(VarDecl *VD) {
VisitDeclaratorDecl(VD);
VisitRedeclarable(VD);
- VD->SClass = (StorageClass)Record[Idx++];
+ VD->setStorageClass((StorageClass)Record[Idx++]);
VD->setStorageClassAsWritten((StorageClass)Record[Idx++]);
VD->setThreadSpecified(Record[Idx++]);
VD->setCXXDirectInitializer(Record[Idx++]);
projects / clang / commitdiff