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Diffstat (limited to 'contrib/llvm/tools/clang/lib/AST/DeclCXX.cpp')
| -rw-r--r-- | contrib/llvm/tools/clang/lib/AST/DeclCXX.cpp | 2135 |
1 files changed, 2135 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/AST/DeclCXX.cpp b/contrib/llvm/tools/clang/lib/AST/DeclCXX.cpp new file mode 100644 index 0000000..a17abdd --- /dev/null +++ b/contrib/llvm/tools/clang/lib/AST/DeclCXX.cpp @@ -0,0 +1,2135 @@ +//===--- DeclCXX.cpp - C++ Declaration AST Node Implementation ------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file implements the C++ related Decl classes. +// +//===----------------------------------------------------------------------===// +#include "clang/AST/DeclCXX.h" +#include "clang/AST/ASTContext.h" +#include "clang/AST/ASTLambda.h" +#include "clang/AST/ASTMutationListener.h" +#include "clang/AST/CXXInheritance.h" +#include "clang/AST/DeclTemplate.h" +#include "clang/AST/Expr.h" +#include "clang/AST/ExprCXX.h" +#include "clang/AST/TypeLoc.h" +#include "clang/Basic/IdentifierTable.h" +#include "llvm/ADT/STLExtras.h" +#include "llvm/ADT/SmallPtrSet.h" +using namespace clang; + +//===----------------------------------------------------------------------===// +// Decl Allocation/Deallocation Method Implementations +//===----------------------------------------------------------------------===// + +void AccessSpecDecl::anchor() { } + +AccessSpecDecl *AccessSpecDecl::CreateDeserialized(ASTContext &C, unsigned ID) { + void *Mem = AllocateDeserializedDecl(C, ID, sizeof(AccessSpecDecl)); + return new (Mem) AccessSpecDecl(EmptyShell()); +} + +void LazyASTUnresolvedSet::getFromExternalSource(ASTContext &C) const { + ExternalASTSource *Source = C.getExternalSource(); + assert(Impl.Decls.isLazy() && "getFromExternalSource for non-lazy set"); + assert(Source && "getFromExternalSource with no external source"); + + for (ASTUnresolvedSet::iterator I = Impl.begin(); I != Impl.end(); ++I) + I.setDecl(cast<NamedDecl>(Source->GetExternalDecl( + reinterpret_cast<uintptr_t>(I.getDecl()) >> 2))); + Impl.Decls.setLazy(false); +} + +CXXRecordDecl::DefinitionData::DefinitionData(CXXRecordDecl *D) + : UserDeclaredConstructor(false), UserDeclaredSpecialMembers(0), + Aggregate(true), PlainOldData(true), Empty(true), Polymorphic(false), + Abstract(false), IsStandardLayout(true), HasNoNonEmptyBases(true), + HasPrivateFields(false), HasProtectedFields(false), HasPublicFields(false), + HasMutableFields(false), HasOnlyCMembers(true), + HasInClassInitializer(false), HasUninitializedReferenceMember(false), + NeedOverloadResolutionForMoveConstructor(false), + NeedOverloadResolutionForMoveAssignment(false), + NeedOverloadResolutionForDestructor(false), + DefaultedMoveConstructorIsDeleted(false), + DefaultedMoveAssignmentIsDeleted(false), + DefaultedDestructorIsDeleted(false), + HasTrivialSpecialMembers(SMF_All), + DeclaredNonTrivialSpecialMembers(0), + HasIrrelevantDestructor(true), + HasConstexprNonCopyMoveConstructor(false), + DefaultedDefaultConstructorIsConstexpr(true), + HasConstexprDefaultConstructor(false), + HasNonLiteralTypeFieldsOrBases(false), ComputedVisibleConversions(false), + UserProvidedDefaultConstructor(false), DeclaredSpecialMembers(0), + ImplicitCopyConstructorHasConstParam(true), + ImplicitCopyAssignmentHasConstParam(true), + HasDeclaredCopyConstructorWithConstParam(false), + HasDeclaredCopyAssignmentWithConstParam(false), + IsLambda(false), NumBases(0), NumVBases(0), Bases(), VBases(), + Definition(D), FirstFriend() { +} + +CXXBaseSpecifier *CXXRecordDecl::DefinitionData::getBasesSlowCase() const { + return Bases.get(Definition->getASTContext().getExternalSource()); +} + +CXXBaseSpecifier *CXXRecordDecl::DefinitionData::getVBasesSlowCase() const { + return VBases.get(Definition->getASTContext().getExternalSource()); +} + +CXXRecordDecl::CXXRecordDecl(Kind K, TagKind TK, DeclContext *DC, + SourceLocation StartLoc, SourceLocation IdLoc, + IdentifierInfo *Id, CXXRecordDecl *PrevDecl) + : RecordDecl(K, TK, DC, StartLoc, IdLoc, Id, PrevDecl), + DefinitionData(PrevDecl ? PrevDecl->DefinitionData : 0), + TemplateOrInstantiation() { } + +CXXRecordDecl *CXXRecordDecl::Create(const ASTContext &C, TagKind TK, + DeclContext *DC, SourceLocation StartLoc, + SourceLocation IdLoc, IdentifierInfo *Id, + CXXRecordDecl* PrevDecl, + bool DelayTypeCreation) { + CXXRecordDecl* R = new (C) CXXRecordDecl(CXXRecord, TK, DC, StartLoc, IdLoc, + Id, PrevDecl); + R->MayHaveOutOfDateDef = C.getLangOpts().Modules; + + // FIXME: DelayTypeCreation seems like such a hack + if (!DelayTypeCreation) + C.getTypeDeclType(R, PrevDecl); + return R; +} + +CXXRecordDecl *CXXRecordDecl::CreateLambda(const ASTContext &C, DeclContext *DC, + TypeSourceInfo *Info, SourceLocation Loc, + bool Dependent, bool IsGeneric, + LambdaCaptureDefault CaptureDefault) { + CXXRecordDecl* R = new (C) CXXRecordDecl(CXXRecord, TTK_Class, DC, Loc, Loc, + 0, 0); + R->IsBeingDefined = true; + R->DefinitionData = new (C) struct LambdaDefinitionData(R, Info, + Dependent, + IsGeneric, + CaptureDefault); + R->MayHaveOutOfDateDef = false; + R->setImplicit(true); + C.getTypeDeclType(R, /*PrevDecl=*/0); + return R; +} + +CXXRecordDecl * +CXXRecordDecl::CreateDeserialized(const ASTContext &C, unsigned ID) { + void *Mem = AllocateDeserializedDecl(C, ID, sizeof(CXXRecordDecl)); + CXXRecordDecl *R = new (Mem) CXXRecordDecl(CXXRecord, TTK_Struct, 0, + SourceLocation(), SourceLocation(), + 0, 0); + R->MayHaveOutOfDateDef = false; + return R; +} + +void +CXXRecordDecl::setBases(CXXBaseSpecifier const * const *Bases, + unsigned NumBases) { + ASTContext &C = getASTContext(); + + if (!data().Bases.isOffset() && data().NumBases > 0) + C.Deallocate(data().getBases()); + + if (NumBases) { + // C++ [dcl.init.aggr]p1: + // An aggregate is [...] a class with [...] no base classes [...]. + data().Aggregate = false; + + // C++ [class]p4: + // A POD-struct is an aggregate class... + data().PlainOldData = false; + } + + // The set of seen virtual base types. + llvm::SmallPtrSet<CanQualType, 8> SeenVBaseTypes; + + // The virtual bases of this class. + SmallVector<const CXXBaseSpecifier *, 8> VBases; + + data().Bases = new(C) CXXBaseSpecifier [NumBases]; + data().NumBases = NumBases; + for (unsigned i = 0; i < NumBases; ++i) { + data().getBases()[i] = *Bases[i]; + // Keep track of inherited vbases for this base class. + const CXXBaseSpecifier *Base = Bases[i]; + QualType BaseType = Base->getType(); + // Skip dependent types; we can't do any checking on them now. + if (BaseType->isDependentType()) + continue; + CXXRecordDecl *BaseClassDecl + = cast<CXXRecordDecl>(BaseType->getAs<RecordType>()->getDecl()); + + // A class with a non-empty base class is not empty. + // FIXME: Standard ref? + if (!BaseClassDecl->isEmpty()) { + if (!data().Empty) { + // C++0x [class]p7: + // A standard-layout class is a class that: + // [...] + // -- either has no non-static data members in the most derived + // class and at most one base class with non-static data members, + // or has no base classes with non-static data members, and + // If this is the second non-empty base, then neither of these two + // clauses can be true. + data().IsStandardLayout = false; + } + + data().Empty = false; + data().HasNoNonEmptyBases = false; + } + + // C++ [class.virtual]p1: + // A class that declares or inherits a virtual function is called a + // polymorphic class. + if (BaseClassDecl->isPolymorphic()) + data().Polymorphic = true; + + // C++0x [class]p7: + // A standard-layout class is a class that: [...] + // -- has no non-standard-layout base classes + if (!BaseClassDecl->isStandardLayout()) + data().IsStandardLayout = false; + + // Record if this base is the first non-literal field or base. + if (!hasNonLiteralTypeFieldsOrBases() && !BaseType->isLiteralType(C)) + data().HasNonLiteralTypeFieldsOrBases = true; + + // Now go through all virtual bases of this base and add them. + for (CXXRecordDecl::base_class_iterator VBase = + BaseClassDecl->vbases_begin(), + E = BaseClassDecl->vbases_end(); VBase != E; ++VBase) { + // Add this base if it's not already in the list. + if (SeenVBaseTypes.insert(C.getCanonicalType(VBase->getType()))) { + VBases.push_back(VBase); + + // C++11 [class.copy]p8: + // The implicitly-declared copy constructor for a class X will have + // the form 'X::X(const X&)' if each [...] virtual base class B of X + // has a copy constructor whose first parameter is of type + // 'const B&' or 'const volatile B&' [...] + if (CXXRecordDecl *VBaseDecl = VBase->getType()->getAsCXXRecordDecl()) + if (!VBaseDecl->hasCopyConstructorWithConstParam()) + data().ImplicitCopyConstructorHasConstParam = false; + } + } + + if (Base->isVirtual()) { + // Add this base if it's not already in the list. + if (SeenVBaseTypes.insert(C.getCanonicalType(BaseType))) + VBases.push_back(Base); + + // C++0x [meta.unary.prop] is_empty: + // T is a class type, but not a union type, with ... no virtual base + // classes + data().Empty = false; + + // C++11 [class.ctor]p5, C++11 [class.copy]p12, C++11 [class.copy]p25: + // A [default constructor, copy/move constructor, or copy/move assignment + // operator for a class X] is trivial [...] if: + // -- class X has [...] no virtual base classes + data().HasTrivialSpecialMembers &= SMF_Destructor; + + // C++0x [class]p7: + // A standard-layout class is a class that: [...] + // -- has [...] no virtual base classes + data().IsStandardLayout = false; + + // C++11 [dcl.constexpr]p4: + // In the definition of a constexpr constructor [...] + // -- the class shall not have any virtual base classes + data().DefaultedDefaultConstructorIsConstexpr = false; + } else { + // C++ [class.ctor]p5: + // A default constructor is trivial [...] if: + // -- all the direct base classes of its class have trivial default + // constructors. + if (!BaseClassDecl->hasTrivialDefaultConstructor()) + data().HasTrivialSpecialMembers &= ~SMF_DefaultConstructor; + + // C++0x [class.copy]p13: + // A copy/move constructor for class X is trivial if [...] + // [...] + // -- the constructor selected to copy/move each direct base class + // subobject is trivial, and + if (!BaseClassDecl->hasTrivialCopyConstructor()) + data().HasTrivialSpecialMembers &= ~SMF_CopyConstructor; + // If the base class doesn't have a simple move constructor, we'll eagerly + // declare it and perform overload resolution to determine which function + // it actually calls. If it does have a simple move constructor, this + // check is correct. + if (!BaseClassDecl->hasTrivialMoveConstructor()) + data().HasTrivialSpecialMembers &= ~SMF_MoveConstructor; + + // C++0x [class.copy]p27: + // A copy/move assignment operator for class X is trivial if [...] + // [...] + // -- the assignment operator selected to copy/move each direct base + // class subobject is trivial, and + if (!BaseClassDecl->hasTrivialCopyAssignment()) + data().HasTrivialSpecialMembers &= ~SMF_CopyAssignment; + // If the base class doesn't have a simple move assignment, we'll eagerly + // declare it and perform overload resolution to determine which function + // it actually calls. If it does have a simple move assignment, this + // check is correct. + if (!BaseClassDecl->hasTrivialMoveAssignment()) + data().HasTrivialSpecialMembers &= ~SMF_MoveAssignment; + + // C++11 [class.ctor]p6: + // If that user-written default constructor would satisfy the + // requirements of a constexpr constructor, the implicitly-defined + // default constructor is constexpr. + if (!BaseClassDecl->hasConstexprDefaultConstructor()) + data().DefaultedDefaultConstructorIsConstexpr = false; + } + + // C++ [class.ctor]p3: + // A destructor is trivial if all the direct base classes of its class + // have trivial destructors. + if (!BaseClassDecl->hasTrivialDestructor()) + data().HasTrivialSpecialMembers &= ~SMF_Destructor; + + if (!BaseClassDecl->hasIrrelevantDestructor()) + data().HasIrrelevantDestructor = false; + + // C++11 [class.copy]p18: + // The implicitly-declared copy assignment oeprator for a class X will + // have the form 'X& X::operator=(const X&)' if each direct base class B + // of X has a copy assignment operator whose parameter is of type 'const + // B&', 'const volatile B&', or 'B' [...] + if (!BaseClassDecl->hasCopyAssignmentWithConstParam()) + data().ImplicitCopyAssignmentHasConstParam = false; + + // C++11 [class.copy]p8: + // The implicitly-declared copy constructor for a class X will have + // the form 'X::X(const X&)' if each direct [...] base class B of X + // has a copy constructor whose first parameter is of type + // 'const B&' or 'const volatile B&' [...] + if (!BaseClassDecl->hasCopyConstructorWithConstParam()) + data().ImplicitCopyConstructorHasConstParam = false; + + // A class has an Objective-C object member if... or any of its bases + // has an Objective-C object member. + if (BaseClassDecl->hasObjectMember()) + setHasObjectMember(true); + + if (BaseClassDecl->hasVolatileMember()) + setHasVolatileMember(true); + + // Keep track of the presence of mutable fields. + if (BaseClassDecl->hasMutableFields()) + data().HasMutableFields = true; + + if (BaseClassDecl->hasUninitializedReferenceMember()) + data().HasUninitializedReferenceMember = true; + + addedClassSubobject(BaseClassDecl); + } + + if (VBases.empty()) + return; + + // Create base specifier for any direct or indirect virtual bases. + data().VBases = new (C) CXXBaseSpecifier[VBases.size()]; + data().NumVBases = VBases.size(); + for (int I = 0, E = VBases.size(); I != E; ++I) { + QualType Type = VBases[I]->getType(); + if (!Type->isDependentType()) + addedClassSubobject(Type->getAsCXXRecordDecl()); + data().getVBases()[I] = *VBases[I]; + } +} + +void CXXRecordDecl::addedClassSubobject(CXXRecordDecl *Subobj) { + // C++11 [class.copy]p11: + // A defaulted copy/move constructor for a class X is defined as + // deleted if X has: + // -- a direct or virtual base class B that cannot be copied/moved [...] + // -- a non-static data member of class type M (or array thereof) + // that cannot be copied or moved [...] + if (!Subobj->hasSimpleMoveConstructor()) + data().NeedOverloadResolutionForMoveConstructor = true; + + // C++11 [class.copy]p23: + // A defaulted copy/move assignment operator for a class X is defined as + // deleted if X has: + // -- a direct or virtual base class B that cannot be copied/moved [...] + // -- a non-static data member of class type M (or array thereof) + // that cannot be copied or moved [...] + if (!Subobj->hasSimpleMoveAssignment()) + data().NeedOverloadResolutionForMoveAssignment = true; + + // C++11 [class.ctor]p5, C++11 [class.copy]p11, C++11 [class.dtor]p5: + // A defaulted [ctor or dtor] for a class X is defined as + // deleted if X has: + // -- any direct or virtual base class [...] has a type with a destructor + // that is deleted or inaccessible from the defaulted [ctor or dtor]. + // -- any non-static data member has a type with a destructor + // that is deleted or inaccessible from the defaulted [ctor or dtor]. + if (!Subobj->hasSimpleDestructor()) { + data().NeedOverloadResolutionForMoveConstructor = true; + data().NeedOverloadResolutionForDestructor = true; + } +} + +/// Callback function for CXXRecordDecl::forallBases that acknowledges +/// that it saw a base class. +static bool SawBase(const CXXRecordDecl *, void *) { + return true; +} + +bool CXXRecordDecl::hasAnyDependentBases() const { + if (!isDependentContext()) + return false; + + return !forallBases(SawBase, 0); +} + +bool CXXRecordDecl::isTriviallyCopyable() const { + // C++0x [class]p5: + // A trivially copyable class is a class that: + // -- has no non-trivial copy constructors, + if (hasNonTrivialCopyConstructor()) return false; + // -- has no non-trivial move constructors, + if (hasNonTrivialMoveConstructor()) return false; + // -- has no non-trivial copy assignment operators, + if (hasNonTrivialCopyAssignment()) return false; + // -- has no non-trivial move assignment operators, and + if (hasNonTrivialMoveAssignment()) return false; + // -- has a trivial destructor. + if (!hasTrivialDestructor()) return false; + + return true; +} + +void CXXRecordDecl::markedVirtualFunctionPure() { + // C++ [class.abstract]p2: + // A class is abstract if it has at least one pure virtual function. + data().Abstract = true; +} + +void CXXRecordDecl::addedMember(Decl *D) { + if (!D->isImplicit() && + !isa<FieldDecl>(D) && + !isa<IndirectFieldDecl>(D) && + (!isa<TagDecl>(D) || cast<TagDecl>(D)->getTagKind() == TTK_Class || + cast<TagDecl>(D)->getTagKind() == TTK_Interface)) + data().HasOnlyCMembers = false; + + // Ignore friends and invalid declarations. + if (D->getFriendObjectKind() || D->isInvalidDecl()) + return; + + FunctionTemplateDecl *FunTmpl = dyn_cast<FunctionTemplateDecl>(D); + if (FunTmpl) + D = FunTmpl->getTemplatedDecl(); + + if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) { + if (Method->isVirtual()) { + // C++ [dcl.init.aggr]p1: + // An aggregate is an array or a class with [...] no virtual functions. + data().Aggregate = false; + + // C++ [class]p4: + // A POD-struct is an aggregate class... + data().PlainOldData = false; + + // Virtual functions make the class non-empty. + // FIXME: Standard ref? + data().Empty = false; + + // C++ [class.virtual]p1: + // A class that declares or inherits a virtual function is called a + // polymorphic class. + data().Polymorphic = true; + + // C++11 [class.ctor]p5, C++11 [class.copy]p12, C++11 [class.copy]p25: + // A [default constructor, copy/move constructor, or copy/move + // assignment operator for a class X] is trivial [...] if: + // -- class X has no virtual functions [...] + data().HasTrivialSpecialMembers &= SMF_Destructor; + + // C++0x [class]p7: + // A standard-layout class is a class that: [...] + // -- has no virtual functions + data().IsStandardLayout = false; + } + } + + // Notify the listener if an implicit member was added after the definition + // was completed. + if (!isBeingDefined() && D->isImplicit()) + if (ASTMutationListener *L = getASTMutationListener()) + L->AddedCXXImplicitMember(data().Definition, D); + + // The kind of special member this declaration is, if any. + unsigned SMKind = 0; + + // Handle constructors. + if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(D)) { + if (!Constructor->isImplicit()) { + // Note that we have a user-declared constructor. + data().UserDeclaredConstructor = true; + + // C++ [class]p4: + // A POD-struct is an aggregate class [...] + // Since the POD bit is meant to be C++03 POD-ness, clear it even if the + // type is technically an aggregate in C++0x since it wouldn't be in 03. + data().PlainOldData = false; + } + + // Technically, "user-provided" is only defined for special member + // functions, but the intent of the standard is clearly that it should apply + // to all functions. + bool UserProvided = Constructor->isUserProvided(); + + if (Constructor->isDefaultConstructor()) { + SMKind |= SMF_DefaultConstructor; + + if (UserProvided) + data().UserProvidedDefaultConstructor = true; + if (Constructor->isConstexpr()) + data().HasConstexprDefaultConstructor = true; + } + + if (!FunTmpl) { + unsigned Quals; + if (Constructor->isCopyConstructor(Quals)) { + SMKind |= SMF_CopyConstructor; + + if (Quals & Qualifiers::Const) + data().HasDeclaredCopyConstructorWithConstParam = true; + } else if (Constructor->isMoveConstructor()) + SMKind |= SMF_MoveConstructor; + } + + // Record if we see any constexpr constructors which are neither copy + // nor move constructors. + if (Constructor->isConstexpr() && !Constructor->isCopyOrMoveConstructor()) + data().HasConstexprNonCopyMoveConstructor = true; + + // C++ [dcl.init.aggr]p1: + // An aggregate is an array or a class with no user-declared + // constructors [...]. + // C++11 [dcl.init.aggr]p1: + // An aggregate is an array or a class with no user-provided + // constructors [...]. + if (getASTContext().getLangOpts().CPlusPlus11 + ? UserProvided : !Constructor->isImplicit()) + data().Aggregate = false; + } + + // Handle destructors. + if (CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(D)) { + SMKind |= SMF_Destructor; + + if (!DD->isImplicit()) + data().HasIrrelevantDestructor = false; + + // C++11 [class.dtor]p5: + // A destructor is trivial if [...] the destructor is not virtual. + if (DD->isVirtual()) + data().HasTrivialSpecialMembers &= ~SMF_Destructor; + } + + // Handle member functions. + if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) { + if (Method->isCopyAssignmentOperator()) { + SMKind |= SMF_CopyAssignment; + + const ReferenceType *ParamTy = + Method->getParamDecl(0)->getType()->getAs<ReferenceType>(); + if (!ParamTy || ParamTy->getPointeeType().isConstQualified()) + data().HasDeclaredCopyAssignmentWithConstParam = true; + } + + if (Method->isMoveAssignmentOperator()) + SMKind |= SMF_MoveAssignment; + + // Keep the list of conversion functions up-to-date. + if (CXXConversionDecl *Conversion = dyn_cast<CXXConversionDecl>(D)) { + // FIXME: We use the 'unsafe' accessor for the access specifier here, + // because Sema may not have set it yet. That's really just a misdesign + // in Sema. However, LLDB *will* have set the access specifier correctly, + // and adds declarations after the class is technically completed, + // so completeDefinition()'s overriding of the access specifiers doesn't + // work. + AccessSpecifier AS = Conversion->getAccessUnsafe(); + + if (Conversion->getPrimaryTemplate()) { + // We don't record specializations. + } else { + ASTContext &Ctx = getASTContext(); + ASTUnresolvedSet &Conversions = data().Conversions.get(Ctx); + NamedDecl *Primary = + FunTmpl ? cast<NamedDecl>(FunTmpl) : cast<NamedDecl>(Conversion); + if (Primary->getPreviousDecl()) + Conversions.replace(cast<NamedDecl>(Primary->getPreviousDecl()), + Primary, AS); + else + Conversions.addDecl(Ctx, Primary, AS); + } + } + + if (SMKind) { + // If this is the first declaration of a special member, we no longer have + // an implicit trivial special member. + data().HasTrivialSpecialMembers &= + data().DeclaredSpecialMembers | ~SMKind; + + if (!Method->isImplicit() && !Method->isUserProvided()) { + // This method is user-declared but not user-provided. We can't work out + // whether it's trivial yet (not until we get to the end of the class). + // We'll handle this method in finishedDefaultedOrDeletedMember. + } else if (Method->isTrivial()) + data().HasTrivialSpecialMembers |= SMKind; + else + data().DeclaredNonTrivialSpecialMembers |= SMKind; + + // Note when we have declared a declared special member, and suppress the + // implicit declaration of this special member. + data().DeclaredSpecialMembers |= SMKind; + + if (!Method->isImplicit()) { + data().UserDeclaredSpecialMembers |= SMKind; + + // C++03 [class]p4: + // A POD-struct is an aggregate class that has [...] no user-defined + // copy assignment operator and no user-defined destructor. + // + // Since the POD bit is meant to be C++03 POD-ness, and in C++03, + // aggregates could not have any constructors, clear it even for an + // explicitly defaulted or deleted constructor. + // type is technically an aggregate in C++0x since it wouldn't be in 03. + // + // Also, a user-declared move assignment operator makes a class non-POD. + // This is an extension in C++03. + data().PlainOldData = false; + } + } + + return; + } + + // Handle non-static data members. + if (FieldDecl *Field = dyn_cast<FieldDecl>(D)) { + // C++ [class.bit]p2: + // A declaration for a bit-field that omits the identifier declares an + // unnamed bit-field. Unnamed bit-fields are not members and cannot be + // initialized. + if (Field->isUnnamedBitfield()) + return; + + // C++ [dcl.init.aggr]p1: + // An aggregate is an array or a class (clause 9) with [...] no + // private or protected non-static data members (clause 11). + // + // A POD must be an aggregate. + if (D->getAccess() == AS_private || D->getAccess() == AS_protected) { + data().Aggregate = false; + data().PlainOldData = false; + } + + // C++0x [class]p7: + // A standard-layout class is a class that: + // [...] + // -- has the same access control for all non-static data members, + switch (D->getAccess()) { + case AS_private: data().HasPrivateFields = true; break; + case AS_protected: data().HasProtectedFields = true; break; + case AS_public: data().HasPublicFields = true; break; + case AS_none: llvm_unreachable("Invalid access specifier"); + }; + if ((data().HasPrivateFields + data().HasProtectedFields + + data().HasPublicFields) > 1) + data().IsStandardLayout = false; + + // Keep track of the presence of mutable fields. + if (Field->isMutable()) + data().HasMutableFields = true; + + // C++0x [class]p9: + // A POD struct is a class that is both a trivial class and a + // standard-layout class, and has no non-static data members of type + // non-POD struct, non-POD union (or array of such types). + // + // Automatic Reference Counting: the presence of a member of Objective-C pointer type + // that does not explicitly have no lifetime makes the class a non-POD. + // However, we delay setting PlainOldData to false in this case so that + // Sema has a chance to diagnostic causes where the same class will be + // non-POD with Automatic Reference Counting but a POD without ARC. + // In this case, the class will become a non-POD class when we complete + // the definition. + ASTContext &Context = getASTContext(); + QualType T = Context.getBaseElementType(Field->getType()); + if (T->isObjCRetainableType() || T.isObjCGCStrong()) { + if (!Context.getLangOpts().ObjCAutoRefCount || + T.getObjCLifetime() != Qualifiers::OCL_ExplicitNone) + setHasObjectMember(true); + } else if (!T.isCXX98PODType(Context)) + data().PlainOldData = false; + + if (T->isReferenceType()) { + if (!Field->hasInClassInitializer()) + data().HasUninitializedReferenceMember = true; + + // C++0x [class]p7: + // A standard-layout class is a class that: + // -- has no non-static data members of type [...] reference, + data().IsStandardLayout = false; + } + + // Record if this field is the first non-literal or volatile field or base. + if (!T->isLiteralType(Context) || T.isVolatileQualified()) + data().HasNonLiteralTypeFieldsOrBases = true; + + if (Field->hasInClassInitializer()) { + data().HasInClassInitializer = true; + + // C++11 [class]p5: + // A default constructor is trivial if [...] no non-static data member + // of its class has a brace-or-equal-initializer. + data().HasTrivialSpecialMembers &= ~SMF_DefaultConstructor; + + // C++11 [dcl.init.aggr]p1: + // An aggregate is a [...] class with [...] no + // brace-or-equal-initializers for non-static data members. + // + // This rule was removed in C++1y. + if (!getASTContext().getLangOpts().CPlusPlus1y) + data().Aggregate = false; + + // C++11 [class]p10: + // A POD struct is [...] a trivial class. + data().PlainOldData = false; + } + + // C++11 [class.copy]p23: + // A defaulted copy/move assignment operator for a class X is defined + // as deleted if X has: + // -- a non-static data member of reference type + if (T->isReferenceType()) + data().DefaultedMoveAssignmentIsDeleted = true; + + if (const RecordType *RecordTy = T->getAs<RecordType>()) { + CXXRecordDecl* FieldRec = cast<CXXRecordDecl>(RecordTy->getDecl()); + if (FieldRec->getDefinition()) { + addedClassSubobject(FieldRec); + + // We may need to perform overload resolution to determine whether a + // field can be moved if it's const or volatile qualified. + if (T.getCVRQualifiers() & (Qualifiers::Const | Qualifiers::Volatile)) { + data().NeedOverloadResolutionForMoveConstructor = true; + data().NeedOverloadResolutionForMoveAssignment = true; + } + + // C++11 [class.ctor]p5, C++11 [class.copy]p11: + // A defaulted [special member] for a class X is defined as + // deleted if: + // -- X is a union-like class that has a variant member with a + // non-trivial [corresponding special member] + if (isUnion()) { + if (FieldRec->hasNonTrivialMoveConstructor()) + data().DefaultedMoveConstructorIsDeleted = true; + if (FieldRec->hasNonTrivialMoveAssignment()) + data().DefaultedMoveAssignmentIsDeleted = true; + if (FieldRec->hasNonTrivialDestructor()) + data().DefaultedDestructorIsDeleted = true; + } + + // C++0x [class.ctor]p5: + // A default constructor is trivial [...] if: + // -- for all the non-static data members of its class that are of + // class type (or array thereof), each such class has a trivial + // default constructor. + if (!FieldRec->hasTrivialDefaultConstructor()) + data().HasTrivialSpecialMembers &= ~SMF_DefaultConstructor; + + // C++0x [class.copy]p13: + // A copy/move constructor for class X is trivial if [...] + // [...] + // -- for each non-static data member of X that is of class type (or + // an array thereof), the constructor selected to copy/move that + // member is trivial; + if (!FieldRec->hasTrivialCopyConstructor()) + data().HasTrivialSpecialMembers &= ~SMF_CopyConstructor; + // If the field doesn't have a simple move constructor, we'll eagerly + // declare the move constructor for this class and we'll decide whether + // it's trivial then. + if (!FieldRec->hasTrivialMoveConstructor()) + data().HasTrivialSpecialMembers &= ~SMF_MoveConstructor; + + // C++0x [class.copy]p27: + // A copy/move assignment operator for class X is trivial if [...] + // [...] + // -- for each non-static data member of X that is of class type (or + // an array thereof), the assignment operator selected to + // copy/move that member is trivial; + if (!FieldRec->hasTrivialCopyAssignment()) + data().HasTrivialSpecialMembers &= ~SMF_CopyAssignment; + // If the field doesn't have a simple move assignment, we'll eagerly + // declare the move assignment for this class and we'll decide whether + // it's trivial then. + if (!FieldRec->hasTrivialMoveAssignment()) + data().HasTrivialSpecialMembers &= ~SMF_MoveAssignment; + + if (!FieldRec->hasTrivialDestructor()) + data().HasTrivialSpecialMembers &= ~SMF_Destructor; + if (!FieldRec->hasIrrelevantDestructor()) + data().HasIrrelevantDestructor = false; + if (FieldRec->hasObjectMember()) + setHasObjectMember(true); + if (FieldRec->hasVolatileMember()) + setHasVolatileMember(true); + + // C++0x [class]p7: + // A standard-layout class is a class that: + // -- has no non-static data members of type non-standard-layout + // class (or array of such types) [...] + if (!FieldRec->isStandardLayout()) + data().IsStandardLayout = false; + + // C++0x [class]p7: + // A standard-layout class is a class that: + // [...] + // -- has no base classes of the same type as the first non-static + // data member. + // We don't want to expend bits in the state of the record decl + // tracking whether this is the first non-static data member so we + // cheat a bit and use some of the existing state: the empty bit. + // Virtual bases and virtual methods make a class non-empty, but they + // also make it non-standard-layout so we needn't check here. + // A non-empty base class may leave the class standard-layout, but not + // if we have arrived here, and have at least on non-static data + // member. If IsStandardLayout remains true, then the first non-static + // data member must come through here with Empty still true, and Empty + // will subsequently be set to false below. + if (data().IsStandardLayout && data().Empty) { + for (CXXRecordDecl::base_class_const_iterator BI = bases_begin(), + BE = bases_end(); + BI != BE; ++BI) { + if (Context.hasSameUnqualifiedType(BI->getType(), T)) { + data().IsStandardLayout = false; + break; + } + } + } + + // Keep track of the presence of mutable fields. + if (FieldRec->hasMutableFields()) + data().HasMutableFields = true; + + // C++11 [class.copy]p13: + // If the implicitly-defined constructor would satisfy the + // requirements of a constexpr constructor, the implicitly-defined + // constructor is constexpr. + // C++11 [dcl.constexpr]p4: + // -- every constructor involved in initializing non-static data + // members [...] shall be a constexpr constructor + if (!Field->hasInClassInitializer() && + !FieldRec->hasConstexprDefaultConstructor() && !isUnion()) + // The standard requires any in-class initializer to be a constant + // expression. We consider this to be a defect. + data().DefaultedDefaultConstructorIsConstexpr = false; + + // C++11 [class.copy]p8: + // The implicitly-declared copy constructor for a class X will have + // the form 'X::X(const X&)' if [...] for all the non-static data + // members of X that are of a class type M (or array thereof), each + // such class type has a copy constructor whose first parameter is + // of type 'const M&' or 'const volatile M&'. + if (!FieldRec->hasCopyConstructorWithConstParam()) + data().ImplicitCopyConstructorHasConstParam = false; + + // C++11 [class.copy]p18: + // The implicitly-declared copy assignment oeprator for a class X will + // have the form 'X& X::operator=(const X&)' if [...] for all the + // non-static data members of X that are of a class type M (or array + // thereof), each such class type has a copy assignment operator whose + // parameter is of type 'const M&', 'const volatile M&' or 'M'. + if (!FieldRec->hasCopyAssignmentWithConstParam()) + data().ImplicitCopyAssignmentHasConstParam = false; + + if (FieldRec->hasUninitializedReferenceMember() && + !Field->hasInClassInitializer()) + data().HasUninitializedReferenceMember = true; + } + } else { + // Base element type of field is a non-class type. + if (!T->isLiteralType(Context) || + (!Field->hasInClassInitializer() && !isUnion())) + data().DefaultedDefaultConstructorIsConstexpr = false; + + // C++11 [class.copy]p23: + // A defaulted copy/move assignment operator for a class X is defined + // as deleted if X has: + // -- a non-static data member of const non-class type (or array + // thereof) + if (T.isConstQualified()) + data().DefaultedMoveAssignmentIsDeleted = true; + } + + // C++0x [class]p7: + // A standard-layout class is a class that: + // [...] + // -- either has no non-static data members in the most derived + // class and at most one base class with non-static data members, + // or has no base classes with non-static data members, and + // At this point we know that we have a non-static data member, so the last + // clause holds. + if (!data().HasNoNonEmptyBases) + data().IsStandardLayout = false; + + // If this is not a zero-length bit-field, then the class is not empty. + if (data().Empty) { + if (!Field->isBitField() || + (!Field->getBitWidth()->isTypeDependent() && + !Field->getBitWidth()->isValueDependent() && + Field->getBitWidthValue(Context) != 0)) + data().Empty = false; + } + } + + // Handle using declarations of conversion functions. + if (UsingShadowDecl *Shadow = dyn_cast<UsingShadowDecl>(D)) { + if (Shadow->getDeclName().getNameKind() + == DeclarationName::CXXConversionFunctionName) { + ASTContext &Ctx = getASTContext(); + data().Conversions.get(Ctx).addDecl(Ctx, Shadow, Shadow->getAccess()); + } + } +} + +void CXXRecordDecl::finishedDefaultedOrDeletedMember(CXXMethodDecl *D) { + assert(!D->isImplicit() && !D->isUserProvided()); + + // The kind of special member this declaration is, if any. + unsigned SMKind = 0; + + if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(D)) { + if (Constructor->isDefaultConstructor()) { + SMKind |= SMF_DefaultConstructor; + if (Constructor->isConstexpr()) + data().HasConstexprDefaultConstructor = true; + } + if (Constructor->isCopyConstructor()) + SMKind |= SMF_CopyConstructor; + else if (Constructor->isMoveConstructor()) + SMKind |= SMF_MoveConstructor; + else if (Constructor->isConstexpr()) + // We may now know that the constructor is constexpr. + data().HasConstexprNonCopyMoveConstructor = true; + } else if (isa<CXXDestructorDecl>(D)) + SMKind |= SMF_Destructor; + else if (D->isCopyAssignmentOperator()) + SMKind |= SMF_CopyAssignment; + else if (D->isMoveAssignmentOperator()) + SMKind |= SMF_MoveAssignment; + + // Update which trivial / non-trivial special members we have. + // addedMember will have skipped this step for this member. + if (D->isTrivial()) + data().HasTrivialSpecialMembers |= SMKind; + else + data().DeclaredNonTrivialSpecialMembers |= SMKind; +} + +bool CXXRecordDecl::isCLike() const { + if (getTagKind() == TTK_Class || getTagKind() == TTK_Interface || + !TemplateOrInstantiation.isNull()) + return false; + if (!hasDefinition()) + return true; + + return isPOD() && data().HasOnlyCMembers; +} + +bool CXXRecordDecl::isGenericLambda() const { + if (!isLambda()) return false; + return getLambdaData().IsGenericLambda; +} + +CXXMethodDecl* CXXRecordDecl::getLambdaCallOperator() const { + if (!isLambda()) return 0; + DeclarationName Name = + getASTContext().DeclarationNames.getCXXOperatorName(OO_Call); + DeclContext::lookup_const_result Calls = lookup(Name); + + assert(!Calls.empty() && "Missing lambda call operator!"); + assert(Calls.size() == 1 && "More than one lambda call operator!"); + + NamedDecl *CallOp = Calls.front(); + if (FunctionTemplateDecl *CallOpTmpl = + dyn_cast<FunctionTemplateDecl>(CallOp)) + return cast<CXXMethodDecl>(CallOpTmpl->getTemplatedDecl()); + + return cast<CXXMethodDecl>(CallOp); +} + +CXXMethodDecl* CXXRecordDecl::getLambdaStaticInvoker() const { + if (!isLambda()) return 0; + DeclarationName Name = + &getASTContext().Idents.get(getLambdaStaticInvokerName()); + DeclContext::lookup_const_result Invoker = lookup(Name); + if (Invoker.empty()) return 0; + assert(Invoker.size() == 1 && "More than one static invoker operator!"); + NamedDecl *InvokerFun = Invoker.front(); + if (FunctionTemplateDecl *InvokerTemplate = + dyn_cast<FunctionTemplateDecl>(InvokerFun)) + return cast<CXXMethodDecl>(InvokerTemplate->getTemplatedDecl()); + + return cast<CXXMethodDecl>(InvokerFun); +} + +void CXXRecordDecl::getCaptureFields( + llvm::DenseMap<const VarDecl *, FieldDecl *> &Captures, + FieldDecl *&ThisCapture) const { + Captures.clear(); + ThisCapture = 0; + + LambdaDefinitionData &Lambda = getLambdaData(); + RecordDecl::field_iterator Field = field_begin(); + for (LambdaExpr::Capture *C = Lambda.Captures, *CEnd = C + Lambda.NumCaptures; + C != CEnd; ++C, ++Field) { + if (C->capturesThis()) + ThisCapture = *Field; + else if (C->capturesVariable()) + Captures[C->getCapturedVar()] = *Field; + } + assert(Field == field_end()); +} + +TemplateParameterList * +CXXRecordDecl::getGenericLambdaTemplateParameterList() const { + if (!isLambda()) return 0; + CXXMethodDecl *CallOp = getLambdaCallOperator(); + if (FunctionTemplateDecl *Tmpl = CallOp->getDescribedFunctionTemplate()) + return Tmpl->getTemplateParameters(); + return 0; +} + +static CanQualType GetConversionType(ASTContext &Context, NamedDecl *Conv) { + QualType T; + if (isa<UsingShadowDecl>(Conv)) + Conv = cast<UsingShadowDecl>(Conv)->getTargetDecl(); + if (FunctionTemplateDecl *ConvTemp = dyn_cast<FunctionTemplateDecl>(Conv)) + T = ConvTemp->getTemplatedDecl()->getResultType(); + else + T = cast<CXXConversionDecl>(Conv)->getConversionType(); + return Context.getCanonicalType(T); +} + +/// Collect the visible conversions of a base class. +/// +/// \param Record a base class of the class we're considering +/// \param InVirtual whether this base class is a virtual base (or a base +/// of a virtual base) +/// \param Access the access along the inheritance path to this base +/// \param ParentHiddenTypes the conversions provided by the inheritors +/// of this base +/// \param Output the set to which to add conversions from non-virtual bases +/// \param VOutput the set to which to add conversions from virtual bases +/// \param HiddenVBaseCs the set of conversions which were hidden in a +/// virtual base along some inheritance path +static void CollectVisibleConversions(ASTContext &Context, + CXXRecordDecl *Record, + bool InVirtual, + AccessSpecifier Access, + const llvm::SmallPtrSet<CanQualType, 8> &ParentHiddenTypes, + ASTUnresolvedSet &Output, + UnresolvedSetImpl &VOutput, + llvm::SmallPtrSet<NamedDecl*, 8> &HiddenVBaseCs) { + // The set of types which have conversions in this class or its + // subclasses. As an optimization, we don't copy the derived set + // unless it might change. + const llvm::SmallPtrSet<CanQualType, 8> *HiddenTypes = &ParentHiddenTypes; + llvm::SmallPtrSet<CanQualType, 8> HiddenTypesBuffer; + + // Collect the direct conversions and figure out which conversions + // will be hidden in the subclasses. + CXXRecordDecl::conversion_iterator ConvI = Record->conversion_begin(); + CXXRecordDecl::conversion_iterator ConvE = Record->conversion_end(); + if (ConvI != ConvE) { + HiddenTypesBuffer = ParentHiddenTypes; + HiddenTypes = &HiddenTypesBuffer; + + for (CXXRecordDecl::conversion_iterator I = ConvI; I != ConvE; ++I) { + CanQualType ConvType(GetConversionType(Context, I.getDecl())); + bool Hidden = ParentHiddenTypes.count(ConvType); + if (!Hidden) + HiddenTypesBuffer.insert(ConvType); + + // If this conversion is hidden and we're in a virtual base, + // remember that it's hidden along some inheritance path. + if (Hidden && InVirtual) + HiddenVBaseCs.insert(cast<NamedDecl>(I.getDecl()->getCanonicalDecl())); + + // If this conversion isn't hidden, add it to the appropriate output. + else if (!Hidden) { + AccessSpecifier IAccess + = CXXRecordDecl::MergeAccess(Access, I.getAccess()); + + if (InVirtual) + VOutput.addDecl(I.getDecl(), IAccess); + else + Output.addDecl(Context, I.getDecl(), IAccess); + } + } + } + + // Collect information recursively from any base classes. + for (CXXRecordDecl::base_class_iterator + I = Record->bases_begin(), E = Record->bases_end(); I != E; ++I) { + const RecordType *RT = I->getType()->getAs<RecordType>(); + if (!RT) continue; + + AccessSpecifier BaseAccess + = CXXRecordDecl::MergeAccess(Access, I->getAccessSpecifier()); + bool BaseInVirtual = InVirtual || I->isVirtual(); + + CXXRecordDecl *Base = cast<CXXRecordDecl>(RT->getDecl()); + CollectVisibleConversions(Context, Base, BaseInVirtual, BaseAccess, + *HiddenTypes, Output, VOutput, HiddenVBaseCs); + } +} + +/// Collect the visible conversions of a class. +/// +/// This would be extremely straightforward if it weren't for virtual +/// bases. It might be worth special-casing that, really. +static void CollectVisibleConversions(ASTContext &Context, + CXXRecordDecl *Record, + ASTUnresolvedSet &Output) { + // The collection of all conversions in virtual bases that we've + // found. These will be added to the output as long as they don't + // appear in the hidden-conversions set. + UnresolvedSet<8> VBaseCs; + + // The set of conversions in virtual bases that we've determined to + // be hidden. + llvm::SmallPtrSet<NamedDecl*, 8> HiddenVBaseCs; + + // The set of types hidden by classes derived from this one. + llvm::SmallPtrSet<CanQualType, 8> HiddenTypes; + + // Go ahead and collect the direct conversions and add them to the + // hidden-types set. + CXXRecordDecl::conversion_iterator ConvI = Record->conversion_begin(); + CXXRecordDecl::conversion_iterator ConvE = Record->conversion_end(); + Output.append(Context, ConvI, ConvE); + for (; ConvI != ConvE; ++ConvI) + HiddenTypes.insert(GetConversionType(Context, ConvI.getDecl())); + + // Recursively collect conversions from base classes. + for (CXXRecordDecl::base_class_iterator + I = Record->bases_begin(), E = Record->bases_end(); I != E; ++I) { + const RecordType *RT = I->getType()->getAs<RecordType>(); + if (!RT) continue; + + CollectVisibleConversions(Context, cast<CXXRecordDecl>(RT->getDecl()), + I->isVirtual(), I->getAccessSpecifier(), + HiddenTypes, Output, VBaseCs, HiddenVBaseCs); + } + + // Add any unhidden conversions provided by virtual bases. + for (UnresolvedSetIterator I = VBaseCs.begin(), E = VBaseCs.end(); + I != E; ++I) { + if (!HiddenVBaseCs.count(cast<NamedDecl>(I.getDecl()->getCanonicalDecl()))) + Output.addDecl(Context, I.getDecl(), I.getAccess()); + } +} + +/// getVisibleConversionFunctions - get all conversion functions visible +/// in current class; including conversion function templates. +std::pair<CXXRecordDecl::conversion_iterator,CXXRecordDecl::conversion_iterator> +CXXRecordDecl::getVisibleConversionFunctions() { + ASTContext &Ctx = getASTContext(); + + ASTUnresolvedSet *Set; + if (bases_begin() == bases_end()) { + // If root class, all conversions are visible. + Set = &data().Conversions.get(Ctx); + } else { + Set = &data().VisibleConversions.get(Ctx); + // If visible conversion list is not evaluated, evaluate it. + if (!data().ComputedVisibleConversions) { + CollectVisibleConversions(Ctx, this, *Set); + data().ComputedVisibleConversions = true; + } + } + return std::make_pair(Set->begin(), Set->end()); +} + +void CXXRecordDecl::removeConversion(const NamedDecl *ConvDecl) { + // This operation is O(N) but extremely rare. Sema only uses it to + // remove UsingShadowDecls in a class that were followed by a direct + // declaration, e.g.: + // class A : B { + // using B::operator int; + // operator int(); + // }; + // This is uncommon by itself and even more uncommon in conjunction + // with sufficiently large numbers of directly-declared conversions + // that asymptotic behavior matters. + + ASTUnresolvedSet &Convs = data().Conversions.get(getASTContext()); + for (unsigned I = 0, E = Convs.size(); I != E; ++I) { + if (Convs[I].getDecl() == ConvDecl) { + Convs.erase(I); + assert(std::find(Convs.begin(), Convs.end(), ConvDecl) == Convs.end() + && "conversion was found multiple times in unresolved set"); + return; + } + } + + llvm_unreachable("conversion not found in set!"); +} + +CXXRecordDecl *CXXRecordDecl::getInstantiatedFromMemberClass() const { + if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) + return cast<CXXRecordDecl>(MSInfo->getInstantiatedFrom()); + + return 0; +} + +void +CXXRecordDecl::setInstantiationOfMemberClass(CXXRecordDecl *RD, + TemplateSpecializationKind TSK) { + assert(TemplateOrInstantiation.isNull() && + "Previous template or instantiation?"); + assert(!isa<ClassTemplatePartialSpecializationDecl>(this)); + TemplateOrInstantiation + = new (getASTContext()) MemberSpecializationInfo(RD, TSK); +} + +TemplateSpecializationKind CXXRecordDecl::getTemplateSpecializationKind() const{ + if (const ClassTemplateSpecializationDecl *Spec + = dyn_cast<ClassTemplateSpecializationDecl>(this)) + return Spec->getSpecializationKind(); + + if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) + return MSInfo->getTemplateSpecializationKind(); + + return TSK_Undeclared; +} + +void +CXXRecordDecl::setTemplateSpecializationKind(TemplateSpecializationKind TSK) { + if (ClassTemplateSpecializationDecl *Spec + = dyn_cast<ClassTemplateSpecializationDecl>(this)) { + Spec->setSpecializationKind(TSK); + return; + } + + if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) { + MSInfo->setTemplateSpecializationKind(TSK); + return; + } + + llvm_unreachable("Not a class template or member class specialization"); +} + +CXXDestructorDecl *CXXRecordDecl::getDestructor() const { + ASTContext &Context = getASTContext(); + QualType ClassType = Context.getTypeDeclType(this); + + DeclarationName Name + = Context.DeclarationNames.getCXXDestructorName( + Context.getCanonicalType(ClassType)); + + DeclContext::lookup_const_result R = lookup(Name); + if (R.empty()) + return 0; + + CXXDestructorDecl *Dtor = cast<CXXDestructorDecl>(R.front()); + return Dtor; +} + +void CXXRecordDecl::completeDefinition() { + completeDefinition(0); +} + +void CXXRecordDecl::completeDefinition(CXXFinalOverriderMap *FinalOverriders) { + RecordDecl::completeDefinition(); + + if (hasObjectMember() && getASTContext().getLangOpts().ObjCAutoRefCount) { + // Objective-C Automatic Reference Counting: + // If a class has a non-static data member of Objective-C pointer + // type (or array thereof), it is a non-POD type and its + // default constructor (if any), copy constructor, move constructor, + // copy assignment operator, move assignment operator, and destructor are + // non-trivial. + struct DefinitionData &Data = data(); + Data.PlainOldData = false; + Data.HasTrivialSpecialMembers = 0; + Data.HasIrrelevantDestructor = false; + } + + // If the class may be abstract (but hasn't been marked as such), check for + // any pure final overriders. + if (mayBeAbstract()) { + CXXFinalOverriderMap MyFinalOverriders; + if (!FinalOverriders) { + getFinalOverriders(MyFinalOverriders); + FinalOverriders = &MyFinalOverriders; + } + + bool Done = false; + for (CXXFinalOverriderMap::iterator M = FinalOverriders->begin(), + MEnd = FinalOverriders->end(); + M != MEnd && !Done; ++M) { + for (OverridingMethods::iterator SO = M->second.begin(), + SOEnd = M->second.end(); + SO != SOEnd && !Done; ++SO) { + assert(SO->second.size() > 0 && + "All virtual functions have overridding virtual functions"); + + // C++ [class.abstract]p4: + // A class is abstract if it contains or inherits at least one + // pure virtual function for which the final overrider is pure + // virtual. + if (SO->second.front().Method->isPure()) { + data().Abstract = true; + Done = true; + break; + } + } + } + } + + // Set access bits correctly on the directly-declared conversions. + for (conversion_iterator I = conversion_begin(), E = conversion_end(); + I != E; ++I) + I.setAccess((*I)->getAccess()); +} + +bool CXXRecordDecl::mayBeAbstract() const { + if (data().Abstract || isInvalidDecl() || !data().Polymorphic || + isDependentContext()) + return false; + + for (CXXRecordDecl::base_class_const_iterator B = bases_begin(), + BEnd = bases_end(); + B != BEnd; ++B) { + CXXRecordDecl *BaseDecl + = cast<CXXRecordDecl>(B->getType()->getAs<RecordType>()->getDecl()); + if (BaseDecl->isAbstract()) + return true; + } + + return false; +} + +void CXXMethodDecl::anchor() { } + +bool CXXMethodDecl::isStatic() const { + const CXXMethodDecl *MD = getCanonicalDecl(); + + if (MD->getStorageClass() == SC_Static) + return true; + + OverloadedOperatorKind OOK = getDeclName().getCXXOverloadedOperator(); + return isStaticOverloadedOperator(OOK); +} + +static bool recursivelyOverrides(const CXXMethodDecl *DerivedMD, + const CXXMethodDecl *BaseMD) { + for (CXXMethodDecl::method_iterator I = DerivedMD->begin_overridden_methods(), + E = DerivedMD->end_overridden_methods(); I != E; ++I) { + const CXXMethodDecl *MD = *I; + if (MD->getCanonicalDecl() == BaseMD->getCanonicalDecl()) + return true; + if (recursivelyOverrides(MD, BaseMD)) + return true; + } + return false; +} + +CXXMethodDecl * +CXXMethodDecl::getCorrespondingMethodInClass(const CXXRecordDecl *RD, + bool MayBeBase) { + if (this->getParent()->getCanonicalDecl() == RD->getCanonicalDecl()) + return this; + + // Lookup doesn't work for destructors, so handle them separately. + if (isa<CXXDestructorDecl>(this)) { + CXXMethodDecl *MD = RD->getDestructor(); + if (MD) { + if (recursivelyOverrides(MD, this)) + return MD; + if (MayBeBase && recursivelyOverrides(this, MD)) + return MD; + } + return NULL; + } + + lookup_const_result Candidates = RD->lookup(getDeclName()); + for (NamedDecl * const * I = Candidates.begin(); I != Candidates.end(); ++I) { + CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(*I); + if (!MD) + continue; + if (recursivelyOverrides(MD, this)) + return MD; + if (MayBeBase && recursivelyOverrides(this, MD)) + return MD; + } + + for (CXXRecordDecl::base_class_const_iterator I = RD->bases_begin(), + E = RD->bases_end(); I != E; ++I) { + const RecordType *RT = I->getType()->getAs<RecordType>(); + if (!RT) + continue; + const CXXRecordDecl *Base = cast<CXXRecordDecl>(RT->getDecl()); + CXXMethodDecl *T = this->getCorrespondingMethodInClass(Base); + if (T) + return T; + } + + return NULL; +} + +CXXMethodDecl * +CXXMethodDecl::Create(ASTContext &C, CXXRecordDecl *RD, + SourceLocation StartLoc, + const DeclarationNameInfo &NameInfo, + QualType T, TypeSourceInfo *TInfo, + StorageClass SC, bool isInline, + bool isConstexpr, SourceLocation EndLocation) { + return new (C) CXXMethodDecl(CXXMethod, RD, StartLoc, NameInfo, T, TInfo, + SC, isInline, isConstexpr, + EndLocation); +} + +CXXMethodDecl *CXXMethodDecl::CreateDeserialized(ASTContext &C, unsigned ID) { + void *Mem = AllocateDeserializedDecl(C, ID, sizeof(CXXMethodDecl)); + return new (Mem) CXXMethodDecl(CXXMethod, 0, SourceLocation(), + DeclarationNameInfo(), QualType(), + 0, SC_None, false, false, + SourceLocation()); +} + +bool CXXMethodDecl::isUsualDeallocationFunction() const { + if (getOverloadedOperator() != OO_Delete && + getOverloadedOperator() != OO_Array_Delete) + return false; + + // C++ [basic.stc.dynamic.deallocation]p2: + // A template instance is never a usual deallocation function, + // regardless of its signature. + if (getPrimaryTemplate()) + return false; + + // C++ [basic.stc.dynamic.deallocation]p2: + // If a class T has a member deallocation function named operator delete + // with exactly one parameter, then that function is a usual (non-placement) + // deallocation function. [...] + if (getNumParams() == 1) + return true; + + // C++ [basic.stc.dynamic.deallocation]p2: + // [...] If class T does not declare such an operator delete but does + // declare a member deallocation function named operator delete with + // exactly two parameters, the second of which has type std::size_t (18.1), + // then this function is a usual deallocation function. + ASTContext &Context = getASTContext(); + if (getNumParams() != 2 || + !Context.hasSameUnqualifiedType(getParamDecl(1)->getType(), + Context.getSizeType())) + return false; + + // This function is a usual deallocation function if there are no + // single-parameter deallocation functions of the same kind. + DeclContext::lookup_const_result R = getDeclContext()->lookup(getDeclName()); + for (DeclContext::lookup_const_result::iterator I = R.begin(), E = R.end(); + I != E; ++I) { + if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(*I)) + if (FD->getNumParams() == 1) + return false; + } + + return true; +} + +bool CXXMethodDecl::isCopyAssignmentOperator() const { + // C++0x [class.copy]p17: + // A user-declared copy assignment operator X::operator= is a non-static + // non-template member function of class X with exactly one parameter of + // type X, X&, const X&, volatile X& or const volatile X&. + if (/*operator=*/getOverloadedOperator() != OO_Equal || + /*non-static*/ isStatic() || + /*non-template*/getPrimaryTemplate() || getDescribedFunctionTemplate() || + getNumParams() != 1) + return false; + + QualType ParamType = getParamDecl(0)->getType(); + if (const LValueReferenceType *Ref = ParamType->getAs<LValueReferenceType>()) + ParamType = Ref->getPointeeType(); + + ASTContext &Context = getASTContext(); + QualType ClassType + = Context.getCanonicalType(Context.getTypeDeclType(getParent())); + return Context.hasSameUnqualifiedType(ClassType, ParamType); +} + +bool CXXMethodDecl::isMoveAssignmentOperator() const { + // C++0x [class.copy]p19: + // A user-declared move assignment operator X::operator= is a non-static + // non-template member function of class X with exactly one parameter of type + // X&&, const X&&, volatile X&&, or const volatile X&&. + if (getOverloadedOperator() != OO_Equal || isStatic() || + getPrimaryTemplate() || getDescribedFunctionTemplate() || + getNumParams() != 1) + return false; + + QualType ParamType = getParamDecl(0)->getType(); + if (!isa<RValueReferenceType>(ParamType)) + return false; + ParamType = ParamType->getPointeeType(); + + ASTContext &Context = getASTContext(); + QualType ClassType + = Context.getCanonicalType(Context.getTypeDeclType(getParent())); + return Context.hasSameUnqualifiedType(ClassType, ParamType); +} + +void CXXMethodDecl::addOverriddenMethod(const CXXMethodDecl *MD) { + assert(MD->isCanonicalDecl() && "Method is not canonical!"); + assert(!MD->getParent()->isDependentContext() && + "Can't add an overridden method to a class template!"); + assert(MD->isVirtual() && "Method is not virtual!"); + + getASTContext().addOverriddenMethod(this, MD); +} + +CXXMethodDecl::method_iterator CXXMethodDecl::begin_overridden_methods() const { + if (isa<CXXConstructorDecl>(this)) return 0; + return getASTContext().overridden_methods_begin(this); +} + +CXXMethodDecl::method_iterator CXXMethodDecl::end_overridden_methods() const { + if (isa<CXXConstructorDecl>(this)) return 0; + return getASTContext().overridden_methods_end(this); +} + +unsigned CXXMethodDecl::size_overridden_methods() const { + if (isa<CXXConstructorDecl>(this)) return 0; + return getASTContext().overridden_methods_size(this); +} + +QualType CXXMethodDecl::getThisType(ASTContext &C) const { + // C++ 9.3.2p1: The type of this in a member function of a class X is X*. + // If the member function is declared const, the type of this is const X*, + // if the member function is declared volatile, the type of this is + // volatile X*, and if the member function is declared const volatile, + // the type of this is const volatile X*. + + assert(isInstance() && "No 'this' for static methods!"); + + QualType ClassTy = C.getTypeDeclType(getParent()); + ClassTy = C.getQualifiedType(ClassTy, + Qualifiers::fromCVRMask(getTypeQualifiers())); + return C.getPointerType(ClassTy); +} + +bool CXXMethodDecl::hasInlineBody() const { + // If this function is a template instantiation, look at the template from + // which it was instantiated. + const FunctionDecl *CheckFn = getTemplateInstantiationPattern(); + if (!CheckFn) + CheckFn = this; + + const FunctionDecl *fn; + return CheckFn->hasBody(fn) && !fn->isOutOfLine(); +} + +bool CXXMethodDecl::isLambdaStaticInvoker() const { + const CXXRecordDecl *P = getParent(); + if (P->isLambda()) { + if (const CXXMethodDecl *StaticInvoker = P->getLambdaStaticInvoker()) { + if (StaticInvoker == this) return true; + if (P->isGenericLambda() && this->isFunctionTemplateSpecialization()) + return StaticInvoker == this->getPrimaryTemplate()->getTemplatedDecl(); + } + } + return false; +} + +CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context, + TypeSourceInfo *TInfo, bool IsVirtual, + SourceLocation L, Expr *Init, + SourceLocation R, + SourceLocation EllipsisLoc) + : Initializee(TInfo), MemberOrEllipsisLocation(EllipsisLoc), Init(Init), + LParenLoc(L), RParenLoc(R), IsDelegating(false), IsVirtual(IsVirtual), + IsWritten(false), SourceOrderOrNumArrayIndices(0) +{ +} + +CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context, + FieldDecl *Member, + SourceLocation MemberLoc, + SourceLocation L, Expr *Init, + SourceLocation R) + : Initializee(Member), MemberOrEllipsisLocation(MemberLoc), Init(Init), + LParenLoc(L), RParenLoc(R), IsDelegating(false), IsVirtual(false), + IsWritten(false), SourceOrderOrNumArrayIndices(0) +{ +} + +CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context, + IndirectFieldDecl *Member, + SourceLocation MemberLoc, + SourceLocation L, Expr *Init, + SourceLocation R) + : Initializee(Member), MemberOrEllipsisLocation(MemberLoc), Init(Init), + LParenLoc(L), RParenLoc(R), IsDelegating(false), IsVirtual(false), + IsWritten(false), SourceOrderOrNumArrayIndices(0) +{ +} + +CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context, + TypeSourceInfo *TInfo, + SourceLocation L, Expr *Init, + SourceLocation R) + : Initializee(TInfo), MemberOrEllipsisLocation(), Init(Init), + LParenLoc(L), RParenLoc(R), IsDelegating(true), IsVirtual(false), + IsWritten(false), SourceOrderOrNumArrayIndices(0) +{ +} + +CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context, + FieldDecl *Member, + SourceLocation MemberLoc, + SourceLocation L, Expr *Init, + SourceLocation R, + VarDecl **Indices, + unsigned NumIndices) + : Initializee(Member), MemberOrEllipsisLocation(MemberLoc), Init(Init), + LParenLoc(L), RParenLoc(R), IsVirtual(false), + IsWritten(false), SourceOrderOrNumArrayIndices(NumIndices) +{ + VarDecl **MyIndices = reinterpret_cast<VarDecl **> (this + 1); + memcpy(MyIndices, Indices, NumIndices * sizeof(VarDecl *)); +} + +CXXCtorInitializer *CXXCtorInitializer::Create(ASTContext &Context, + FieldDecl *Member, + SourceLocation MemberLoc, + SourceLocation L, Expr *Init, + SourceLocation R, + VarDecl **Indices, + unsigned NumIndices) { + void *Mem = Context.Allocate(sizeof(CXXCtorInitializer) + + sizeof(VarDecl *) * NumIndices, + llvm::alignOf<CXXCtorInitializer>()); + return new (Mem) CXXCtorInitializer(Context, Member, MemberLoc, L, Init, R, + Indices, NumIndices); +} + +TypeLoc CXXCtorInitializer::getBaseClassLoc() const { + if (isBaseInitializer()) + return Initializee.get<TypeSourceInfo*>()->getTypeLoc(); + else + return TypeLoc(); +} + +const Type *CXXCtorInitializer::getBaseClass() const { + if (isBaseInitializer()) + return Initializee.get<TypeSourceInfo*>()->getType().getTypePtr(); + else + return 0; +} + +SourceLocation CXXCtorInitializer::getSourceLocation() const { + if (isAnyMemberInitializer()) + return getMemberLocation(); + + if (isInClassMemberInitializer()) + return getAnyMember()->getLocation(); + + if (TypeSourceInfo *TSInfo = Initializee.get<TypeSourceInfo*>()) + return TSInfo->getTypeLoc().getLocalSourceRange().getBegin(); + + return SourceLocation(); +} + +SourceRange CXXCtorInitializer::getSourceRange() const { + if (isInClassMemberInitializer()) { + FieldDecl *D = getAnyMember(); + if (Expr *I = D->getInClassInitializer()) + return I->getSourceRange(); + return SourceRange(); + } + + return SourceRange(getSourceLocation(), getRParenLoc()); +} + +void CXXConstructorDecl::anchor() { } + +CXXConstructorDecl * +CXXConstructorDecl::CreateDeserialized(ASTContext &C, unsigned ID) { + void *Mem = AllocateDeserializedDecl(C, ID, sizeof(CXXConstructorDecl)); + return new (Mem) CXXConstructorDecl(0, SourceLocation(),DeclarationNameInfo(), + QualType(), 0, false, false, false,false); +} + +CXXConstructorDecl * +CXXConstructorDecl::Create(ASTContext &C, CXXRecordDecl *RD, + SourceLocation StartLoc, + const DeclarationNameInfo &NameInfo, + QualType T, TypeSourceInfo *TInfo, + bool isExplicit, bool isInline, + bool isImplicitlyDeclared, bool isConstexpr) { + assert(NameInfo.getName().getNameKind() + == DeclarationName::CXXConstructorName && + "Name must refer to a constructor"); + return new (C) CXXConstructorDecl(RD, StartLoc, NameInfo, T, TInfo, + isExplicit, isInline, isImplicitlyDeclared, + isConstexpr); +} + +CXXConstructorDecl *CXXConstructorDecl::getTargetConstructor() const { + assert(isDelegatingConstructor() && "Not a delegating constructor!"); + Expr *E = (*init_begin())->getInit()->IgnoreImplicit(); + if (CXXConstructExpr *Construct = dyn_cast<CXXConstructExpr>(E)) + return Construct->getConstructor(); + + return 0; +} + +bool CXXConstructorDecl::isDefaultConstructor() const { + // C++ [class.ctor]p5: + // A default constructor for a class X is a constructor of class + // X that can be called without an argument. + return (getNumParams() == 0) || + (getNumParams() > 0 && getParamDecl(0)->hasDefaultArg()); +} + +bool +CXXConstructorDecl::isCopyConstructor(unsigned &TypeQuals) const { + return isCopyOrMoveConstructor(TypeQuals) && + getParamDecl(0)->getType()->isLValueReferenceType(); +} + +bool CXXConstructorDecl::isMoveConstructor(unsigned &TypeQuals) const { + return isCopyOrMoveConstructor(TypeQuals) && + getParamDecl(0)->getType()->isRValueReferenceType(); +} + +/// \brief Determine whether this is a copy or move constructor. +bool CXXConstructorDecl::isCopyOrMoveConstructor(unsigned &TypeQuals) const { + // C++ [class.copy]p2: + // A non-template constructor for class X is a copy constructor + // if its first parameter is of type X&, const X&, volatile X& or + // const volatile X&, and either there are no other parameters + // or else all other parameters have default arguments (8.3.6). + // C++0x [class.copy]p3: + // A non-template constructor for class X is a move constructor if its + // first parameter is of type X&&, const X&&, volatile X&&, or + // const volatile X&&, and either there are no other parameters or else + // all other parameters have default arguments. + if ((getNumParams() < 1) || + (getNumParams() > 1 && !getParamDecl(1)->hasDefaultArg()) || + (getPrimaryTemplate() != 0) || + (getDescribedFunctionTemplate() != 0)) + return false; + + const ParmVarDecl *Param = getParamDecl(0); + + // Do we have a reference type? + const ReferenceType *ParamRefType = Param->getType()->getAs<ReferenceType>(); + if (!ParamRefType) + return false; + + // Is it a reference to our class type? + ASTContext &Context = getASTContext(); + + CanQualType PointeeType + = Context.getCanonicalType(ParamRefType->getPointeeType()); + CanQualType ClassTy + = Context.getCanonicalType(Context.getTagDeclType(getParent())); + if (PointeeType.getUnqualifiedType() != ClassTy) + return false; + + // FIXME: other qualifiers? + + // We have a copy or move constructor. + TypeQuals = PointeeType.getCVRQualifiers(); + return true; +} + +bool CXXConstructorDecl::isConvertingConstructor(bool AllowExplicit) const { + // C++ [class.conv.ctor]p1: + // A constructor declared without the function-specifier explicit + // that can be called with a single parameter specifies a + // conversion from the type of its first parameter to the type of + // its class. Such a constructor is called a converting + // constructor. + if (isExplicit() && !AllowExplicit) + return false; + + return (getNumParams() == 0 && + getType()->getAs<FunctionProtoType>()->isVariadic()) || + (getNumParams() == 1) || + (getNumParams() > 1 && + (getParamDecl(1)->hasDefaultArg() || + getParamDecl(1)->isParameterPack())); +} + +bool CXXConstructorDecl::isSpecializationCopyingObject() const { + if ((getNumParams() < 1) || + (getNumParams() > 1 && !getParamDecl(1)->hasDefaultArg()) || + (getPrimaryTemplate() == 0) || + (getDescribedFunctionTemplate() != 0)) + return false; + + const ParmVarDecl *Param = getParamDecl(0); + + ASTContext &Context = getASTContext(); + CanQualType ParamType = Context.getCanonicalType(Param->getType()); + + // Is it the same as our our class type? + CanQualType ClassTy + = Context.getCanonicalType(Context.getTagDeclType(getParent())); + if (ParamType.getUnqualifiedType() != ClassTy) + return false; + + return true; +} + +const CXXConstructorDecl *CXXConstructorDecl::getInheritedConstructor() const { + // Hack: we store the inherited constructor in the overridden method table + method_iterator It = getASTContext().overridden_methods_begin(this); + if (It == getASTContext().overridden_methods_end(this)) + return 0; + + return cast<CXXConstructorDecl>(*It); +} + +void +CXXConstructorDecl::setInheritedConstructor(const CXXConstructorDecl *BaseCtor){ + // Hack: we store the inherited constructor in the overridden method table + assert(getASTContext().overridden_methods_size(this) == 0 && + "Base ctor already set."); + getASTContext().addOverriddenMethod(this, BaseCtor); +} + +void CXXDestructorDecl::anchor() { } + +CXXDestructorDecl * +CXXDestructorDecl::CreateDeserialized(ASTContext &C, unsigned ID) { + void *Mem = AllocateDeserializedDecl(C, ID, sizeof(CXXDestructorDecl)); + return new (Mem) CXXDestructorDecl(0, SourceLocation(), DeclarationNameInfo(), + QualType(), 0, false, false); +} + +CXXDestructorDecl * +CXXDestructorDecl::Create(ASTContext &C, CXXRecordDecl *RD, + SourceLocation StartLoc, + const DeclarationNameInfo &NameInfo, + QualType T, TypeSourceInfo *TInfo, + bool isInline, bool isImplicitlyDeclared) { + assert(NameInfo.getName().getNameKind() + == DeclarationName::CXXDestructorName && + "Name must refer to a destructor"); + return new (C) CXXDestructorDecl(RD, StartLoc, NameInfo, T, TInfo, isInline, + isImplicitlyDeclared); +} + +void CXXConversionDecl::anchor() { } + +CXXConversionDecl * +CXXConversionDecl::CreateDeserialized(ASTContext &C, unsigned ID) { + void *Mem = AllocateDeserializedDecl(C, ID, sizeof(CXXConversionDecl)); + return new (Mem) CXXConversionDecl(0, SourceLocation(), DeclarationNameInfo(), + QualType(), 0, false, false, false, + SourceLocation()); +} + +CXXConversionDecl * +CXXConversionDecl::Create(ASTContext &C, CXXRecordDecl *RD, + SourceLocation StartLoc, + const DeclarationNameInfo &NameInfo, + QualType T, TypeSourceInfo *TInfo, + bool isInline, bool isExplicit, + bool isConstexpr, SourceLocation EndLocation) { + assert(NameInfo.getName().getNameKind() + == DeclarationName::CXXConversionFunctionName && + "Name must refer to a conversion function"); + return new (C) CXXConversionDecl(RD, StartLoc, NameInfo, T, TInfo, + isInline, isExplicit, isConstexpr, + EndLocation); +} + +bool CXXConversionDecl::isLambdaToBlockPointerConversion() const { + return isImplicit() && getParent()->isLambda() && + getConversionType()->isBlockPointerType(); +} + +void LinkageSpecDecl::anchor() { } + +LinkageSpecDecl *LinkageSpecDecl::Create(ASTContext &C, + DeclContext *DC, + SourceLocation ExternLoc, + SourceLocation LangLoc, + LanguageIDs Lang, + bool HasBraces) { + return new (C) LinkageSpecDecl(DC, ExternLoc, LangLoc, Lang, HasBraces); +} + +LinkageSpecDecl *LinkageSpecDecl::CreateDeserialized(ASTContext &C, unsigned ID) { + void *Mem = AllocateDeserializedDecl(C, ID, sizeof(LinkageSpecDecl)); + return new (Mem) LinkageSpecDecl(0, SourceLocation(), SourceLocation(), + lang_c, false); +} + +void UsingDirectiveDecl::anchor() { } + +UsingDirectiveDecl *UsingDirectiveDecl::Create(ASTContext &C, DeclContext *DC, + SourceLocation L, + SourceLocation NamespaceLoc, + NestedNameSpecifierLoc QualifierLoc, + SourceLocation IdentLoc, + NamedDecl *Used, + DeclContext *CommonAncestor) { + if (NamespaceDecl *NS = dyn_cast_or_null<NamespaceDecl>(Used)) + Used = NS->getOriginalNamespace(); + return new (C) UsingDirectiveDecl(DC, L, NamespaceLoc, QualifierLoc, + IdentLoc, Used, CommonAncestor); +} + +UsingDirectiveDecl * +UsingDirectiveDecl::CreateDeserialized(ASTContext &C, unsigned ID) { + void *Mem = AllocateDeserializedDecl(C, ID, sizeof(UsingDirectiveDecl)); + return new (Mem) UsingDirectiveDecl(0, SourceLocation(), SourceLocation(), + NestedNameSpecifierLoc(), + SourceLocation(), 0, 0); +} + +NamespaceDecl *UsingDirectiveDecl::getNominatedNamespace() { + if (NamespaceAliasDecl *NA = + dyn_cast_or_null<NamespaceAliasDecl>(NominatedNamespace)) + return NA->getNamespace(); + return cast_or_null<NamespaceDecl>(NominatedNamespace); +} + +void NamespaceDecl::anchor() { } + +NamespaceDecl::NamespaceDecl(DeclContext *DC, bool Inline, + SourceLocation StartLoc, + SourceLocation IdLoc, IdentifierInfo *Id, + NamespaceDecl *PrevDecl) + : NamedDecl(Namespace, DC, IdLoc, Id), DeclContext(Namespace), + LocStart(StartLoc), RBraceLoc(), AnonOrFirstNamespaceAndInline(0, Inline) +{ + setPreviousDecl(PrevDecl); + + if (PrevDecl) + AnonOrFirstNamespaceAndInline.setPointer(PrevDecl->getOriginalNamespace()); +} + +NamespaceDecl *NamespaceDecl::Create(ASTContext &C, DeclContext *DC, + bool Inline, SourceLocation StartLoc, + SourceLocation IdLoc, IdentifierInfo *Id, + NamespaceDecl *PrevDecl) { + return new (C) NamespaceDecl(DC, Inline, StartLoc, IdLoc, Id, PrevDecl); +} + +NamespaceDecl *NamespaceDecl::CreateDeserialized(ASTContext &C, unsigned ID) { + void *Mem = AllocateDeserializedDecl(C, ID, sizeof(NamespaceDecl)); + return new (Mem) NamespaceDecl(0, false, SourceLocation(), SourceLocation(), + 0, 0); +} + +void NamespaceAliasDecl::anchor() { } + +NamespaceAliasDecl *NamespaceAliasDecl::Create(ASTContext &C, DeclContext *DC, + SourceLocation UsingLoc, + SourceLocation AliasLoc, + IdentifierInfo *Alias, + NestedNameSpecifierLoc QualifierLoc, + SourceLocation IdentLoc, + NamedDecl *Namespace) { + if (NamespaceDecl *NS = dyn_cast_or_null<NamespaceDecl>(Namespace)) + Namespace = NS->getOriginalNamespace(); + return new (C) NamespaceAliasDecl(DC, UsingLoc, AliasLoc, Alias, + QualifierLoc, IdentLoc, Namespace); +} + +NamespaceAliasDecl * +NamespaceAliasDecl::CreateDeserialized(ASTContext &C, unsigned ID) { + void *Mem = AllocateDeserializedDecl(C, ID, sizeof(NamespaceAliasDecl)); + return new (Mem) NamespaceAliasDecl(0, SourceLocation(), SourceLocation(), 0, + NestedNameSpecifierLoc(), + SourceLocation(), 0); +} + +void UsingShadowDecl::anchor() { } + +UsingShadowDecl * +UsingShadowDecl::CreateDeserialized(ASTContext &C, unsigned ID) { + void *Mem = AllocateDeserializedDecl(C, ID, sizeof(UsingShadowDecl)); + return new (Mem) UsingShadowDecl(0, SourceLocation(), 0, 0); +} + +UsingDecl *UsingShadowDecl::getUsingDecl() const { + const UsingShadowDecl *Shadow = this; + while (const UsingShadowDecl *NextShadow = + dyn_cast<UsingShadowDecl>(Shadow->UsingOrNextShadow)) + Shadow = NextShadow; + return cast<UsingDecl>(Shadow->UsingOrNextShadow); +} + +void UsingDecl::anchor() { } + +void UsingDecl::addShadowDecl(UsingShadowDecl *S) { + assert(std::find(shadow_begin(), shadow_end(), S) == shadow_end() && + "declaration already in set"); + assert(S->getUsingDecl() == this); + + if (FirstUsingShadow.getPointer()) + S->UsingOrNextShadow = FirstUsingShadow.getPointer(); + FirstUsingShadow.setPointer(S); +} + +void UsingDecl::removeShadowDecl(UsingShadowDecl *S) { + assert(std::find(shadow_begin(), shadow_end(), S) != shadow_end() && + "declaration not in set"); + assert(S->getUsingDecl() == this); + + // Remove S from the shadow decl chain. This is O(n) but hopefully rare. + + if (FirstUsingShadow.getPointer() == S) { + FirstUsingShadow.setPointer( + dyn_cast<UsingShadowDecl>(S->UsingOrNextShadow)); + S->UsingOrNextShadow = this; + return; + } + + UsingShadowDecl *Prev = FirstUsingShadow.getPointer(); + while (Prev->UsingOrNextShadow != S) + Prev = cast<UsingShadowDecl>(Prev->UsingOrNextShadow); + Prev->UsingOrNextShadow = S->UsingOrNextShadow; + S->UsingOrNextShadow = this; +} + +UsingDecl *UsingDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation UL, + NestedNameSpecifierLoc QualifierLoc, + const DeclarationNameInfo &NameInfo, + bool HasTypename) { + return new (C) UsingDecl(DC, UL, QualifierLoc, NameInfo, HasTypename); +} + +UsingDecl *UsingDecl::CreateDeserialized(ASTContext &C, unsigned ID) { + void *Mem = AllocateDeserializedDecl(C, ID, sizeof(UsingDecl)); + return new (Mem) UsingDecl(0, SourceLocation(), NestedNameSpecifierLoc(), + DeclarationNameInfo(), false); +} + +SourceRange UsingDecl::getSourceRange() const { + SourceLocation Begin = isAccessDeclaration() + ? getQualifierLoc().getBeginLoc() : UsingLocation; + return SourceRange(Begin, getNameInfo().getEndLoc()); +} + +void UnresolvedUsingValueDecl::anchor() { } + +UnresolvedUsingValueDecl * +UnresolvedUsingValueDecl::Create(ASTContext &C, DeclContext *DC, + SourceLocation UsingLoc, + NestedNameSpecifierLoc QualifierLoc, + const DeclarationNameInfo &NameInfo) { + return new (C) UnresolvedUsingValueDecl(DC, C.DependentTy, UsingLoc, + QualifierLoc, NameInfo); +} + +UnresolvedUsingValueDecl * +UnresolvedUsingValueDecl::CreateDeserialized(ASTContext &C, unsigned ID) { + void *Mem = AllocateDeserializedDecl(C, ID, sizeof(UnresolvedUsingValueDecl)); + return new (Mem) UnresolvedUsingValueDecl(0, QualType(), SourceLocation(), + NestedNameSpecifierLoc(), + DeclarationNameInfo()); +} + +SourceRange UnresolvedUsingValueDecl::getSourceRange() const { + SourceLocation Begin = isAccessDeclaration() + ? getQualifierLoc().getBeginLoc() : UsingLocation; + return SourceRange(Begin, getNameInfo().getEndLoc()); +} + +void UnresolvedUsingTypenameDecl::anchor() { } + +UnresolvedUsingTypenameDecl * +UnresolvedUsingTypenameDecl::Create(ASTContext &C, DeclContext *DC, + SourceLocation UsingLoc, + SourceLocation TypenameLoc, + NestedNameSpecifierLoc QualifierLoc, + SourceLocation TargetNameLoc, + DeclarationName TargetName) { + return new (C) UnresolvedUsingTypenameDecl(DC, UsingLoc, TypenameLoc, + QualifierLoc, TargetNameLoc, + TargetName.getAsIdentifierInfo()); +} + +UnresolvedUsingTypenameDecl * +UnresolvedUsingTypenameDecl::CreateDeserialized(ASTContext &C, unsigned ID) { + void *Mem = AllocateDeserializedDecl(C, ID, + sizeof(UnresolvedUsingTypenameDecl)); + return new (Mem) UnresolvedUsingTypenameDecl(0, SourceLocation(), + SourceLocation(), + NestedNameSpecifierLoc(), + SourceLocation(), + 0); +} + +void StaticAssertDecl::anchor() { } + +StaticAssertDecl *StaticAssertDecl::Create(ASTContext &C, DeclContext *DC, + SourceLocation StaticAssertLoc, + Expr *AssertExpr, + StringLiteral *Message, + SourceLocation RParenLoc, + bool Failed) { + return new (C) StaticAssertDecl(DC, StaticAssertLoc, AssertExpr, Message, + RParenLoc, Failed); +} + +StaticAssertDecl *StaticAssertDecl::CreateDeserialized(ASTContext &C, + unsigned ID) { + void *Mem = AllocateDeserializedDecl(C, ID, sizeof(StaticAssertDecl)); + return new (Mem) StaticAssertDecl(0, SourceLocation(), 0, 0, + SourceLocation(), false); +} + +static const char *getAccessName(AccessSpecifier AS) { + switch (AS) { + case AS_none: + llvm_unreachable("Invalid access specifier!"); + case AS_public: + return "public"; + case AS_private: + return "private"; + case AS_protected: + return "protected"; + } + llvm_unreachable("Invalid access specifier!"); +} + +const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB, + AccessSpecifier AS) { + return DB << getAccessName(AS); +} + +const PartialDiagnostic &clang::operator<<(const PartialDiagnostic &DB, + AccessSpecifier AS) { + return DB << getAccessName(AS); +} |
