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Diffstat (limited to 'include/clang/AST/DeclCXX.h')
| -rw-r--r-- | include/clang/AST/DeclCXX.h | 3249 |
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diff --git a/include/clang/AST/DeclCXX.h b/include/clang/AST/DeclCXX.h deleted file mode 100644 index 7c54901..0000000 --- a/include/clang/AST/DeclCXX.h +++ /dev/null @@ -1,3249 +0,0 @@ -//===-- DeclCXX.h - Classes for representing C++ declarations -*- C++ -*-=====// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -/// -/// \file -/// \brief Defines the C++ Decl subclasses, other than those for templates -/// (found in DeclTemplate.h) and friends (in DeclFriend.h). -/// -//===----------------------------------------------------------------------===// - -#ifndef LLVM_CLANG_AST_DECLCXX_H -#define LLVM_CLANG_AST_DECLCXX_H - -#include "clang/AST/ASTUnresolvedSet.h" -#include "clang/AST/Attr.h" -#include "clang/AST/Decl.h" -#include "clang/AST/Expr.h" -#include "clang/AST/LambdaCapture.h" -#include "llvm/ADT/DenseMap.h" -#include "llvm/ADT/PointerIntPair.h" -#include "llvm/Support/Compiler.h" - -namespace clang { - -class ClassTemplateDecl; -class ClassTemplateSpecializationDecl; -class CXXBasePath; -class CXXBasePaths; -class CXXConstructorDecl; -class CXXConversionDecl; -class CXXDestructorDecl; -class CXXMethodDecl; -class CXXRecordDecl; -class CXXMemberLookupCriteria; -class CXXFinalOverriderMap; -class CXXIndirectPrimaryBaseSet; -class FriendDecl; -class LambdaExpr; -class UsingDecl; - -/// \brief Represents any kind of function declaration, whether it is a -/// concrete function or a function template. -class AnyFunctionDecl { - NamedDecl *Function; - - AnyFunctionDecl(NamedDecl *ND) : Function(ND) { } - -public: - AnyFunctionDecl(FunctionDecl *FD) : Function(FD) { } - AnyFunctionDecl(FunctionTemplateDecl *FTD); - - /// \brief Implicily converts any function or function template into a - /// named declaration. - operator NamedDecl *() const { return Function; } - - /// \brief Retrieve the underlying function or function template. - NamedDecl *get() const { return Function; } - - static AnyFunctionDecl getFromNamedDecl(NamedDecl *ND) { - return AnyFunctionDecl(ND); - } -}; - -} // end namespace clang - -namespace llvm { - // Provide PointerLikeTypeTraits for non-cvr pointers. - template<> - class PointerLikeTypeTraits< ::clang::AnyFunctionDecl> { - public: - static inline void *getAsVoidPointer(::clang::AnyFunctionDecl F) { - return F.get(); - } - static inline ::clang::AnyFunctionDecl getFromVoidPointer(void *P) { - return ::clang::AnyFunctionDecl::getFromNamedDecl( - static_cast< ::clang::NamedDecl*>(P)); - } - - enum { NumLowBitsAvailable = 2 }; - }; - -} // end namespace llvm - -namespace clang { - -/// \brief Represents an access specifier followed by colon ':'. -/// -/// An objects of this class represents sugar for the syntactic occurrence -/// of an access specifier followed by a colon in the list of member -/// specifiers of a C++ class definition. -/// -/// Note that they do not represent other uses of access specifiers, -/// such as those occurring in a list of base specifiers. -/// Also note that this class has nothing to do with so-called -/// "access declarations" (C++98 11.3 [class.access.dcl]). -class AccessSpecDecl : public Decl { - virtual void anchor(); - /// \brief The location of the ':'. - SourceLocation ColonLoc; - - AccessSpecDecl(AccessSpecifier AS, DeclContext *DC, - SourceLocation ASLoc, SourceLocation ColonLoc) - : Decl(AccessSpec, DC, ASLoc), ColonLoc(ColonLoc) { - setAccess(AS); - } - AccessSpecDecl(EmptyShell Empty) - : Decl(AccessSpec, Empty) { } -public: - /// \brief The location of the access specifier. - SourceLocation getAccessSpecifierLoc() const { return getLocation(); } - /// \brief Sets the location of the access specifier. - void setAccessSpecifierLoc(SourceLocation ASLoc) { setLocation(ASLoc); } - - /// \brief The location of the colon following the access specifier. - SourceLocation getColonLoc() const { return ColonLoc; } - /// \brief Sets the location of the colon. - void setColonLoc(SourceLocation CLoc) { ColonLoc = CLoc; } - - SourceRange getSourceRange() const override LLVM_READONLY { - return SourceRange(getAccessSpecifierLoc(), getColonLoc()); - } - - static AccessSpecDecl *Create(ASTContext &C, AccessSpecifier AS, - DeclContext *DC, SourceLocation ASLoc, - SourceLocation ColonLoc) { - return new (C, DC) AccessSpecDecl(AS, DC, ASLoc, ColonLoc); - } - static AccessSpecDecl *CreateDeserialized(ASTContext &C, unsigned ID); - - // Implement isa/cast/dyncast/etc. - static bool classof(const Decl *D) { return classofKind(D->getKind()); } - static bool classofKind(Kind K) { return K == AccessSpec; } -}; - - -/// \brief Represents a base class of a C++ class. -/// -/// Each CXXBaseSpecifier represents a single, direct base class (or -/// struct) of a C++ class (or struct). It specifies the type of that -/// base class, whether it is a virtual or non-virtual base, and what -/// level of access (public, protected, private) is used for the -/// derivation. For example: -/// -/// \code -/// class A { }; -/// class B { }; -/// class C : public virtual A, protected B { }; -/// \endcode -/// -/// In this code, C will have two CXXBaseSpecifiers, one for "public -/// virtual A" and the other for "protected B". -class CXXBaseSpecifier { - /// \brief The source code range that covers the full base - /// specifier, including the "virtual" (if present) and access - /// specifier (if present). - SourceRange Range; - - /// \brief The source location of the ellipsis, if this is a pack - /// expansion. - SourceLocation EllipsisLoc; - - /// \brief Whether this is a virtual base class or not. - bool Virtual : 1; - - /// \brief Whether this is the base of a class (true) or of a struct (false). - /// - /// This determines the mapping from the access specifier as written in the - /// source code to the access specifier used for semantic analysis. - bool BaseOfClass : 1; - - /// \brief Access specifier as written in the source code (may be AS_none). - /// - /// The actual type of data stored here is an AccessSpecifier, but we use - /// "unsigned" here to work around a VC++ bug. - unsigned Access : 2; - - /// \brief Whether the class contains a using declaration - /// to inherit the named class's constructors. - bool InheritConstructors : 1; - - /// \brief The type of the base class. - /// - /// This will be a class or struct (or a typedef of such). The source code - /// range does not include the \c virtual or the access specifier. - TypeSourceInfo *BaseTypeInfo; - -public: - CXXBaseSpecifier() { } - - CXXBaseSpecifier(SourceRange R, bool V, bool BC, AccessSpecifier A, - TypeSourceInfo *TInfo, SourceLocation EllipsisLoc) - : Range(R), EllipsisLoc(EllipsisLoc), Virtual(V), BaseOfClass(BC), - Access(A), InheritConstructors(false), BaseTypeInfo(TInfo) { } - - /// \brief Retrieves the source range that contains the entire base specifier. - SourceRange getSourceRange() const LLVM_READONLY { return Range; } - SourceLocation getLocStart() const LLVM_READONLY { return Range.getBegin(); } - SourceLocation getLocEnd() const LLVM_READONLY { return Range.getEnd(); } - - /// \brief Determines whether the base class is a virtual base class (or not). - bool isVirtual() const { return Virtual; } - - /// \brief Determine whether this base class is a base of a class declared - /// with the 'class' keyword (vs. one declared with the 'struct' keyword). - bool isBaseOfClass() const { return BaseOfClass; } - - /// \brief Determine whether this base specifier is a pack expansion. - bool isPackExpansion() const { return EllipsisLoc.isValid(); } - - /// \brief Determine whether this base class's constructors get inherited. - bool getInheritConstructors() const { return InheritConstructors; } - - /// \brief Set that this base class's constructors should be inherited. - void setInheritConstructors(bool Inherit = true) { - InheritConstructors = Inherit; - } - - /// \brief For a pack expansion, determine the location of the ellipsis. - SourceLocation getEllipsisLoc() const { - return EllipsisLoc; - } - - /// \brief Returns the access specifier for this base specifier. - /// - /// This is the actual base specifier as used for semantic analysis, so - /// the result can never be AS_none. To retrieve the access specifier as - /// written in the source code, use getAccessSpecifierAsWritten(). - AccessSpecifier getAccessSpecifier() const { - if ((AccessSpecifier)Access == AS_none) - return BaseOfClass? AS_private : AS_public; - else - return (AccessSpecifier)Access; - } - - /// \brief Retrieves the access specifier as written in the source code - /// (which may mean that no access specifier was explicitly written). - /// - /// Use getAccessSpecifier() to retrieve the access specifier for use in - /// semantic analysis. - AccessSpecifier getAccessSpecifierAsWritten() const { - return (AccessSpecifier)Access; - } - - /// \brief Retrieves the type of the base class. - /// - /// This type will always be an unqualified class type. - QualType getType() const { - return BaseTypeInfo->getType().getUnqualifiedType(); - } - - /// \brief Retrieves the type and source location of the base class. - TypeSourceInfo *getTypeSourceInfo() const { return BaseTypeInfo; } -}; - -/// \brief A lazy pointer to the definition data for a declaration. -/// FIXME: This is a little CXXRecordDecl-specific that the moment. -template<typename Decl, typename T> class LazyDefinitionDataPtr { - llvm::PointerUnion<T *, Decl *> DataOrCanonicalDecl; - - LazyDefinitionDataPtr update() { - if (Decl *Canon = DataOrCanonicalDecl.template dyn_cast<Decl*>()) { - if (Canon->isCanonicalDecl()) - Canon->getMostRecentDecl(); - else - // Declaration isn't canonical any more; - // update it and perform path compression. - *this = Canon->getPreviousDecl()->DefinitionData.update(); - } - return *this; - } - -public: - LazyDefinitionDataPtr(Decl *Canon) : DataOrCanonicalDecl(Canon) {} - LazyDefinitionDataPtr(T *Data) : DataOrCanonicalDecl(Data) {} - T *getNotUpdated() { return DataOrCanonicalDecl.template dyn_cast<T*>(); } - T *get() { return update().getNotUpdated(); } -}; - -/// \brief Represents a C++ struct/union/class. -class CXXRecordDecl : public RecordDecl { - - friend void TagDecl::startDefinition(); - - /// Values used in DefinitionData fields to represent special members. - enum SpecialMemberFlags { - SMF_DefaultConstructor = 0x1, - SMF_CopyConstructor = 0x2, - SMF_MoveConstructor = 0x4, - SMF_CopyAssignment = 0x8, - SMF_MoveAssignment = 0x10, - SMF_Destructor = 0x20, - SMF_All = 0x3f - }; - - struct DefinitionData { - DefinitionData(CXXRecordDecl *D); - - /// \brief True if this class has any user-declared constructors. - bool UserDeclaredConstructor : 1; - - /// \brief The user-declared special members which this class has. - unsigned UserDeclaredSpecialMembers : 6; - - /// \brief True when this class is an aggregate. - bool Aggregate : 1; - - /// \brief True when this class is a POD-type. - bool PlainOldData : 1; - - /// true when this class is empty for traits purposes, - /// i.e. has no data members other than 0-width bit-fields, has no - /// virtual function/base, and doesn't inherit from a non-empty - /// class. Doesn't take union-ness into account. - bool Empty : 1; - - /// \brief True when this class is polymorphic, i.e., has at - /// least one virtual member or derives from a polymorphic class. - bool Polymorphic : 1; - - /// \brief True when this class is abstract, i.e., has at least - /// one pure virtual function, (that can come from a base class). - bool Abstract : 1; - - /// \brief True when this class has standard layout. - /// - /// C++11 [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) or reference, - /// * has no virtual functions (10.3) and no virtual base classes (10.1), - /// * has the same access control (Clause 11) for all non-static data - /// members - /// * has no non-standard-layout base classes, - /// * 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 - /// * has no base classes of the same type as the first non-static data - /// member. - bool IsStandardLayout : 1; - - /// \brief True when there are no non-empty base classes. - /// - /// This is a helper bit of state used to implement IsStandardLayout more - /// efficiently. - bool HasNoNonEmptyBases : 1; - - /// \brief True when there are private non-static data members. - bool HasPrivateFields : 1; - - /// \brief True when there are protected non-static data members. - bool HasProtectedFields : 1; - - /// \brief True when there are private non-static data members. - bool HasPublicFields : 1; - - /// \brief True if this class (or any subobject) has mutable fields. - bool HasMutableFields : 1; - - /// \brief True if this class (or any nested anonymous struct or union) - /// has variant members. - bool HasVariantMembers : 1; - - /// \brief True if there no non-field members declared by the user. - bool HasOnlyCMembers : 1; - - /// \brief True if any field has an in-class initializer, including those - /// within anonymous unions or structs. - bool HasInClassInitializer : 1; - - /// \brief True if any field is of reference type, and does not have an - /// in-class initializer. - /// - /// In this case, value-initialization of this class is illegal in C++98 - /// even if the class has a trivial default constructor. - bool HasUninitializedReferenceMember : 1; - - /// \brief These flags are \c true if a defaulted corresponding special - /// member can't be fully analyzed without performing overload resolution. - /// @{ - bool NeedOverloadResolutionForMoveConstructor : 1; - bool NeedOverloadResolutionForMoveAssignment : 1; - bool NeedOverloadResolutionForDestructor : 1; - /// @} - - /// \brief These flags are \c true if an implicit defaulted corresponding - /// special member would be defined as deleted. - /// @{ - bool DefaultedMoveConstructorIsDeleted : 1; - bool DefaultedMoveAssignmentIsDeleted : 1; - bool DefaultedDestructorIsDeleted : 1; - /// @} - - /// \brief The trivial special members which this class has, per - /// C++11 [class.ctor]p5, C++11 [class.copy]p12, C++11 [class.copy]p25, - /// C++11 [class.dtor]p5, or would have if the member were not suppressed. - /// - /// This excludes any user-declared but not user-provided special members - /// which have been declared but not yet defined. - unsigned HasTrivialSpecialMembers : 6; - - /// \brief The declared special members of this class which are known to be - /// non-trivial. - /// - /// This excludes any user-declared but not user-provided special members - /// which have been declared but not yet defined, and any implicit special - /// members which have not yet been declared. - unsigned DeclaredNonTrivialSpecialMembers : 6; - - /// \brief True when this class has a destructor with no semantic effect. - bool HasIrrelevantDestructor : 1; - - /// \brief True when this class has at least one user-declared constexpr - /// constructor which is neither the copy nor move constructor. - bool HasConstexprNonCopyMoveConstructor : 1; - - /// \brief True if a defaulted default constructor for this class would - /// be constexpr. - bool DefaultedDefaultConstructorIsConstexpr : 1; - - /// \brief True if this class has a constexpr default constructor. - /// - /// This is true for either a user-declared constexpr default constructor - /// or an implicitly declared constexpr default constructor. - bool HasConstexprDefaultConstructor : 1; - - /// \brief True when this class contains at least one non-static data - /// member or base class of non-literal or volatile type. - bool HasNonLiteralTypeFieldsOrBases : 1; - - /// \brief True when visible conversion functions are already computed - /// and are available. - bool ComputedVisibleConversions : 1; - - /// \brief Whether we have a C++11 user-provided default constructor (not - /// explicitly deleted or defaulted). - bool UserProvidedDefaultConstructor : 1; - - /// \brief The special members which have been declared for this class, - /// either by the user or implicitly. - unsigned DeclaredSpecialMembers : 6; - - /// \brief Whether an implicit copy constructor would have a const-qualified - /// parameter. - bool ImplicitCopyConstructorHasConstParam : 1; - - /// \brief Whether an implicit copy assignment operator would have a - /// const-qualified parameter. - bool ImplicitCopyAssignmentHasConstParam : 1; - - /// \brief Whether any declared copy constructor has a const-qualified - /// parameter. - bool HasDeclaredCopyConstructorWithConstParam : 1; - - /// \brief Whether any declared copy assignment operator has either a - /// const-qualified reference parameter or a non-reference parameter. - bool HasDeclaredCopyAssignmentWithConstParam : 1; - - /// \brief Whether this class describes a C++ lambda. - bool IsLambda : 1; - - /// \brief Whether we are currently parsing base specifiers. - bool IsParsingBaseSpecifiers : 1; - - /// \brief The number of base class specifiers in Bases. - unsigned NumBases; - - /// \brief The number of virtual base class specifiers in VBases. - unsigned NumVBases; - - /// \brief Base classes of this class. - /// - /// FIXME: This is wasted space for a union. - LazyCXXBaseSpecifiersPtr Bases; - - /// \brief direct and indirect virtual base classes of this class. - LazyCXXBaseSpecifiersPtr VBases; - - /// \brief The conversion functions of this C++ class (but not its - /// inherited conversion functions). - /// - /// Each of the entries in this overload set is a CXXConversionDecl. - LazyASTUnresolvedSet Conversions; - - /// \brief The conversion functions of this C++ class and all those - /// inherited conversion functions that are visible in this class. - /// - /// Each of the entries in this overload set is a CXXConversionDecl or a - /// FunctionTemplateDecl. - LazyASTUnresolvedSet VisibleConversions; - - /// \brief The declaration which defines this record. - CXXRecordDecl *Definition; - - /// \brief The first friend declaration in this class, or null if there - /// aren't any. - /// - /// This is actually currently stored in reverse order. - LazyDeclPtr FirstFriend; - - /// \brief Retrieve the set of direct base classes. - CXXBaseSpecifier *getBases() const { - if (!Bases.isOffset()) - return Bases.get(nullptr); - return getBasesSlowCase(); - } - - /// \brief Retrieve the set of virtual base classes. - CXXBaseSpecifier *getVBases() const { - if (!VBases.isOffset()) - return VBases.get(nullptr); - return getVBasesSlowCase(); - } - - private: - CXXBaseSpecifier *getBasesSlowCase() const; - CXXBaseSpecifier *getVBasesSlowCase() const; - }; - - typedef LazyDefinitionDataPtr<CXXRecordDecl, struct DefinitionData> - DefinitionDataPtr; - friend class LazyDefinitionDataPtr<CXXRecordDecl, struct DefinitionData>; - - mutable DefinitionDataPtr DefinitionData; - - /// \brief Describes a C++ closure type (generated by a lambda expression). - struct LambdaDefinitionData : public DefinitionData { - typedef LambdaCapture Capture; - - LambdaDefinitionData(CXXRecordDecl *D, TypeSourceInfo *Info, - bool Dependent, bool IsGeneric, - LambdaCaptureDefault CaptureDefault) - : DefinitionData(D), Dependent(Dependent), IsGenericLambda(IsGeneric), - CaptureDefault(CaptureDefault), NumCaptures(0), NumExplicitCaptures(0), - ManglingNumber(0), ContextDecl(nullptr), Captures(nullptr), - MethodTyInfo(Info) { - IsLambda = true; - - // C++11 [expr.prim.lambda]p3: - // This class type is neither an aggregate nor a literal type. - Aggregate = false; - PlainOldData = false; - HasNonLiteralTypeFieldsOrBases = true; - } - - /// \brief Whether this lambda is known to be dependent, even if its - /// context isn't dependent. - /// - /// A lambda with a non-dependent context can be dependent if it occurs - /// within the default argument of a function template, because the - /// lambda will have been created with the enclosing context as its - /// declaration context, rather than function. This is an unfortunate - /// artifact of having to parse the default arguments before. - unsigned Dependent : 1; - - /// \brief Whether this lambda is a generic lambda. - unsigned IsGenericLambda : 1; - - /// \brief The Default Capture. - unsigned CaptureDefault : 2; - - /// \brief The number of captures in this lambda is limited 2^NumCaptures. - unsigned NumCaptures : 15; - - /// \brief The number of explicit captures in this lambda. - unsigned NumExplicitCaptures : 13; - - /// \brief The number used to indicate this lambda expression for name - /// mangling in the Itanium C++ ABI. - unsigned ManglingNumber; - - /// \brief The declaration that provides context for this lambda, if the - /// actual DeclContext does not suffice. This is used for lambdas that - /// occur within default arguments of function parameters within the class - /// or within a data member initializer. - Decl *ContextDecl; - - /// \brief The list of captures, both explicit and implicit, for this - /// lambda. - Capture *Captures; - - /// \brief The type of the call method. - TypeSourceInfo *MethodTyInfo; - - }; - - struct DefinitionData &data() const { - auto *DD = DefinitionData.get(); - assert(DD && "queried property of class with no definition"); - return *DD; - } - - struct LambdaDefinitionData &getLambdaData() const { - // No update required: a merged definition cannot change any lambda - // properties. - auto *DD = DefinitionData.getNotUpdated(); - assert(DD && DD->IsLambda && "queried lambda property of non-lambda class"); - return static_cast<LambdaDefinitionData&>(*DD); - } - - /// \brief The template or declaration that this declaration - /// describes or was instantiated from, respectively. - /// - /// For non-templates, this value will be null. For record - /// declarations that describe a class template, this will be a - /// pointer to a ClassTemplateDecl. For member - /// classes of class template specializations, this will be the - /// MemberSpecializationInfo referring to the member class that was - /// instantiated or specialized. - llvm::PointerUnion<ClassTemplateDecl*, MemberSpecializationInfo*> - TemplateOrInstantiation; - - friend class DeclContext; - friend class LambdaExpr; - - /// \brief Called from setBases and addedMember to notify the class that a - /// direct or virtual base class or a member of class type has been added. - void addedClassSubobject(CXXRecordDecl *Base); - - /// \brief Notify the class that member has been added. - /// - /// This routine helps maintain information about the class based on which - /// members have been added. It will be invoked by DeclContext::addDecl() - /// whenever a member is added to this record. - void addedMember(Decl *D); - - void markedVirtualFunctionPure(); - friend void FunctionDecl::setPure(bool); - - friend class ASTNodeImporter; - - /// \brief Get the head of our list of friend declarations, possibly - /// deserializing the friends from an external AST source. - FriendDecl *getFirstFriend() const; - -protected: - CXXRecordDecl(Kind K, TagKind TK, const ASTContext &C, DeclContext *DC, - SourceLocation StartLoc, SourceLocation IdLoc, - IdentifierInfo *Id, CXXRecordDecl *PrevDecl); - -public: - /// \brief Iterator that traverses the base classes of a class. - typedef CXXBaseSpecifier* base_class_iterator; - - /// \brief Iterator that traverses the base classes of a class. - typedef const CXXBaseSpecifier* base_class_const_iterator; - - CXXRecordDecl *getCanonicalDecl() override { - return cast<CXXRecordDecl>(RecordDecl::getCanonicalDecl()); - } - const CXXRecordDecl *getCanonicalDecl() const { - return const_cast<CXXRecordDecl*>(this)->getCanonicalDecl(); - } - - CXXRecordDecl *getPreviousDecl() { - return cast_or_null<CXXRecordDecl>( - static_cast<RecordDecl *>(this)->getPreviousDecl()); - } - const CXXRecordDecl *getPreviousDecl() const { - return const_cast<CXXRecordDecl*>(this)->getPreviousDecl(); - } - - CXXRecordDecl *getMostRecentDecl() { - return cast<CXXRecordDecl>( - static_cast<RecordDecl *>(this)->getMostRecentDecl()); - } - - const CXXRecordDecl *getMostRecentDecl() const { - return const_cast<CXXRecordDecl*>(this)->getMostRecentDecl(); - } - - CXXRecordDecl *getDefinition() const { - auto *DD = DefinitionData.get(); - return DD ? DD->Definition : nullptr; - } - - bool hasDefinition() const { return DefinitionData.get(); } - - static CXXRecordDecl *Create(const ASTContext &C, TagKind TK, DeclContext *DC, - SourceLocation StartLoc, SourceLocation IdLoc, - IdentifierInfo *Id, - CXXRecordDecl *PrevDecl = nullptr, - bool DelayTypeCreation = false); - static CXXRecordDecl *CreateLambda(const ASTContext &C, DeclContext *DC, - TypeSourceInfo *Info, SourceLocation Loc, - bool DependentLambda, bool IsGeneric, - LambdaCaptureDefault CaptureDefault); - static CXXRecordDecl *CreateDeserialized(const ASTContext &C, unsigned ID); - - bool isDynamicClass() const { - return data().Polymorphic || data().NumVBases != 0; - } - - void setIsParsingBaseSpecifiers() { data().IsParsingBaseSpecifiers = true; } - - bool isParsingBaseSpecifiers() const { - return data().IsParsingBaseSpecifiers; - } - - /// \brief Sets the base classes of this struct or class. - void setBases(CXXBaseSpecifier const * const *Bases, unsigned NumBases); - - /// \brief Retrieves the number of base classes of this class. - unsigned getNumBases() const { return data().NumBases; } - - typedef llvm::iterator_range<base_class_iterator> base_class_range; - typedef llvm::iterator_range<base_class_const_iterator> - base_class_const_range; - - base_class_range bases() { - return base_class_range(bases_begin(), bases_end()); - } - base_class_const_range bases() const { - return base_class_const_range(bases_begin(), bases_end()); - } - - base_class_iterator bases_begin() { return data().getBases(); } - base_class_const_iterator bases_begin() const { return data().getBases(); } - base_class_iterator bases_end() { return bases_begin() + data().NumBases; } - base_class_const_iterator bases_end() const { - return bases_begin() + data().NumBases; - } - - /// \brief Retrieves the number of virtual base classes of this class. - unsigned getNumVBases() const { return data().NumVBases; } - - base_class_range vbases() { - return base_class_range(vbases_begin(), vbases_end()); - } - base_class_const_range vbases() const { - return base_class_const_range(vbases_begin(), vbases_end()); - } - - base_class_iterator vbases_begin() { return data().getVBases(); } - base_class_const_iterator vbases_begin() const { return data().getVBases(); } - base_class_iterator vbases_end() { return vbases_begin() + data().NumVBases; } - base_class_const_iterator vbases_end() const { - return vbases_begin() + data().NumVBases; - } - - /// \brief Determine whether this class has any dependent base classes which - /// are not the current instantiation. - bool hasAnyDependentBases() const; - - /// Iterator access to method members. The method iterator visits - /// all method members of the class, including non-instance methods, - /// special methods, etc. - typedef specific_decl_iterator<CXXMethodDecl> method_iterator; - typedef llvm::iterator_range<specific_decl_iterator<CXXMethodDecl>> - method_range; - - method_range methods() const { - return method_range(method_begin(), method_end()); - } - - /// \brief Method begin iterator. Iterates in the order the methods - /// were declared. - method_iterator method_begin() const { - return method_iterator(decls_begin()); - } - /// \brief Method past-the-end iterator. - method_iterator method_end() const { - return method_iterator(decls_end()); - } - - /// Iterator access to constructor members. - typedef specific_decl_iterator<CXXConstructorDecl> ctor_iterator; - typedef llvm::iterator_range<specific_decl_iterator<CXXConstructorDecl>> - ctor_range; - - ctor_range ctors() const { return ctor_range(ctor_begin(), ctor_end()); } - - ctor_iterator ctor_begin() const { - return ctor_iterator(decls_begin()); - } - ctor_iterator ctor_end() const { - return ctor_iterator(decls_end()); - } - - /// An iterator over friend declarations. All of these are defined - /// in DeclFriend.h. - class friend_iterator; - typedef llvm::iterator_range<friend_iterator> friend_range; - - friend_range friends() const; - friend_iterator friend_begin() const; - friend_iterator friend_end() const; - void pushFriendDecl(FriendDecl *FD); - - /// Determines whether this record has any friends. - bool hasFriends() const { - return data().FirstFriend.isValid(); - } - - /// \brief \c true if we know for sure that this class has a single, - /// accessible, unambiguous move constructor that is not deleted. - bool hasSimpleMoveConstructor() const { - return !hasUserDeclaredMoveConstructor() && hasMoveConstructor() && - !data().DefaultedMoveConstructorIsDeleted; - } - /// \brief \c true if we know for sure that this class has a single, - /// accessible, unambiguous move assignment operator that is not deleted. - bool hasSimpleMoveAssignment() const { - return !hasUserDeclaredMoveAssignment() && hasMoveAssignment() && - !data().DefaultedMoveAssignmentIsDeleted; - } - /// \brief \c true if we know for sure that this class has an accessible - /// destructor that is not deleted. - bool hasSimpleDestructor() const { - return !hasUserDeclaredDestructor() && - !data().DefaultedDestructorIsDeleted; - } - - /// \brief Determine whether this class has any default constructors. - bool hasDefaultConstructor() const { - return (data().DeclaredSpecialMembers & SMF_DefaultConstructor) || - needsImplicitDefaultConstructor(); - } - - /// \brief Determine if we need to declare a default constructor for - /// this class. - /// - /// This value is used for lazy creation of default constructors. - bool needsImplicitDefaultConstructor() const { - return !data().UserDeclaredConstructor && - !(data().DeclaredSpecialMembers & SMF_DefaultConstructor) && - // C++14 [expr.prim.lambda]p20: - // The closure type associated with a lambda-expression has no - // default constructor. - !isLambda(); - } - - /// \brief Determine whether this class has any user-declared constructors. - /// - /// When true, a default constructor will not be implicitly declared. - bool hasUserDeclaredConstructor() const { - return data().UserDeclaredConstructor; - } - - /// \brief Whether this class has a user-provided default constructor - /// per C++11. - bool hasUserProvidedDefaultConstructor() const { - return data().UserProvidedDefaultConstructor; - } - - /// \brief Determine whether this class has a user-declared copy constructor. - /// - /// When false, a copy constructor will be implicitly declared. - bool hasUserDeclaredCopyConstructor() const { - return data().UserDeclaredSpecialMembers & SMF_CopyConstructor; - } - - /// \brief Determine whether this class needs an implicit copy - /// constructor to be lazily declared. - bool needsImplicitCopyConstructor() const { - return !(data().DeclaredSpecialMembers & SMF_CopyConstructor); - } - - /// \brief Determine whether we need to eagerly declare a defaulted copy - /// constructor for this class. - bool needsOverloadResolutionForCopyConstructor() const { - return data().HasMutableFields; - } - - /// \brief Determine whether an implicit copy constructor for this type - /// would have a parameter with a const-qualified reference type. - bool implicitCopyConstructorHasConstParam() const { - return data().ImplicitCopyConstructorHasConstParam; - } - - /// \brief Determine whether this class has a copy constructor with - /// a parameter type which is a reference to a const-qualified type. - bool hasCopyConstructorWithConstParam() const { - return data().HasDeclaredCopyConstructorWithConstParam || - (needsImplicitCopyConstructor() && - implicitCopyConstructorHasConstParam()); - } - - /// \brief Whether this class has a user-declared move constructor or - /// assignment operator. - /// - /// When false, a move constructor and assignment operator may be - /// implicitly declared. - bool hasUserDeclaredMoveOperation() const { - return data().UserDeclaredSpecialMembers & - (SMF_MoveConstructor | SMF_MoveAssignment); - } - - /// \brief Determine whether this class has had a move constructor - /// declared by the user. - bool hasUserDeclaredMoveConstructor() const { - return data().UserDeclaredSpecialMembers & SMF_MoveConstructor; - } - - /// \brief Determine whether this class has a move constructor. - bool hasMoveConstructor() const { - return (data().DeclaredSpecialMembers & SMF_MoveConstructor) || - needsImplicitMoveConstructor(); - } - - /// \brief Set that we attempted to declare an implicitly move - /// constructor, but overload resolution failed so we deleted it. - void setImplicitMoveConstructorIsDeleted() { - assert((data().DefaultedMoveConstructorIsDeleted || - needsOverloadResolutionForMoveConstructor()) && - "move constructor should not be deleted"); - data().DefaultedMoveConstructorIsDeleted = true; - } - - /// \brief Determine whether this class should get an implicit move - /// constructor or if any existing special member function inhibits this. - bool needsImplicitMoveConstructor() const { - return !(data().DeclaredSpecialMembers & SMF_MoveConstructor) && - !hasUserDeclaredCopyConstructor() && - !hasUserDeclaredCopyAssignment() && - !hasUserDeclaredMoveAssignment() && - !hasUserDeclaredDestructor(); - } - - /// \brief Determine whether we need to eagerly declare a defaulted move - /// constructor for this class. - bool needsOverloadResolutionForMoveConstructor() const { - return data().NeedOverloadResolutionForMoveConstructor; - } - - /// \brief Determine whether this class has a user-declared copy assignment - /// operator. - /// - /// When false, a copy assigment operator will be implicitly declared. - bool hasUserDeclaredCopyAssignment() const { - return data().UserDeclaredSpecialMembers & SMF_CopyAssignment; - } - - /// \brief Determine whether this class needs an implicit copy - /// assignment operator to be lazily declared. - bool needsImplicitCopyAssignment() const { - return !(data().DeclaredSpecialMembers & SMF_CopyAssignment); - } - - /// \brief Determine whether we need to eagerly declare a defaulted copy - /// assignment operator for this class. - bool needsOverloadResolutionForCopyAssignment() const { - return data().HasMutableFields; - } - - /// \brief Determine whether an implicit copy assignment operator for this - /// type would have a parameter with a const-qualified reference type. - bool implicitCopyAssignmentHasConstParam() const { - return data().ImplicitCopyAssignmentHasConstParam; - } - - /// \brief Determine whether this class has a copy assignment operator with - /// a parameter type which is a reference to a const-qualified type or is not - /// a reference. - bool hasCopyAssignmentWithConstParam() const { - return data().HasDeclaredCopyAssignmentWithConstParam || - (needsImplicitCopyAssignment() && - implicitCopyAssignmentHasConstParam()); - } - - /// \brief Determine whether this class has had a move assignment - /// declared by the user. - bool hasUserDeclaredMoveAssignment() const { - return data().UserDeclaredSpecialMembers & SMF_MoveAssignment; - } - - /// \brief Determine whether this class has a move assignment operator. - bool hasMoveAssignment() const { - return (data().DeclaredSpecialMembers & SMF_MoveAssignment) || - needsImplicitMoveAssignment(); - } - - /// \brief Set that we attempted to declare an implicit move assignment - /// operator, but overload resolution failed so we deleted it. - void setImplicitMoveAssignmentIsDeleted() { - assert((data().DefaultedMoveAssignmentIsDeleted || - needsOverloadResolutionForMoveAssignment()) && - "move assignment should not be deleted"); - data().DefaultedMoveAssignmentIsDeleted = true; - } - - /// \brief Determine whether this class should get an implicit move - /// assignment operator or if any existing special member function inhibits - /// this. - bool needsImplicitMoveAssignment() const { - return !(data().DeclaredSpecialMembers & SMF_MoveAssignment) && - !hasUserDeclaredCopyConstructor() && - !hasUserDeclaredCopyAssignment() && - !hasUserDeclaredMoveConstructor() && - !hasUserDeclaredDestructor(); - } - - /// \brief Determine whether we need to eagerly declare a move assignment - /// operator for this class. - bool needsOverloadResolutionForMoveAssignment() const { - return data().NeedOverloadResolutionForMoveAssignment; - } - - /// \brief Determine whether this class has a user-declared destructor. - /// - /// When false, a destructor will be implicitly declared. - bool hasUserDeclaredDestructor() const { - return data().UserDeclaredSpecialMembers & SMF_Destructor; - } - - /// \brief Determine whether this class needs an implicit destructor to - /// be lazily declared. - bool needsImplicitDestructor() const { - return !(data().DeclaredSpecialMembers & SMF_Destructor); - } - - /// \brief Determine whether we need to eagerly declare a destructor for this - /// class. - bool needsOverloadResolutionForDestructor() const { - return data().NeedOverloadResolutionForDestructor; - } - - /// \brief Determine whether this class describes a lambda function object. - bool isLambda() const { - // An update record can't turn a non-lambda into a lambda. - auto *DD = DefinitionData.getNotUpdated(); - return DD && DD->IsLambda; - } - - /// \brief Determine whether this class describes a generic - /// lambda function object (i.e. function call operator is - /// a template). - bool isGenericLambda() const; - - /// \brief Retrieve the lambda call operator of the closure type - /// if this is a closure type. - CXXMethodDecl *getLambdaCallOperator() const; - - /// \brief Retrieve the lambda static invoker, the address of which - /// is returned by the conversion operator, and the body of which - /// is forwarded to the lambda call operator. - CXXMethodDecl *getLambdaStaticInvoker() const; - - /// \brief Retrieve the generic lambda's template parameter list. - /// Returns null if the class does not represent a lambda or a generic - /// lambda. - TemplateParameterList *getGenericLambdaTemplateParameterList() const; - - LambdaCaptureDefault getLambdaCaptureDefault() const { - assert(isLambda()); - return static_cast<LambdaCaptureDefault>(getLambdaData().CaptureDefault); - } - - /// \brief For a closure type, retrieve the mapping from captured - /// variables and \c this to the non-static data members that store the - /// values or references of the captures. - /// - /// \param Captures Will be populated with the mapping from captured - /// variables to the corresponding fields. - /// - /// \param ThisCapture Will be set to the field declaration for the - /// \c this capture. - /// - /// \note No entries will be added for init-captures, as they do not capture - /// variables. - void getCaptureFields(llvm::DenseMap<const VarDecl *, FieldDecl *> &Captures, - FieldDecl *&ThisCapture) const; - - typedef const LambdaCapture *capture_const_iterator; - typedef llvm::iterator_range<capture_const_iterator> capture_const_range; - - capture_const_range captures() const { - return capture_const_range(captures_begin(), captures_end()); - } - capture_const_iterator captures_begin() const { - return isLambda() ? getLambdaData().Captures : nullptr; - } - capture_const_iterator captures_end() const { - return isLambda() ? captures_begin() + getLambdaData().NumCaptures - : nullptr; - } - - typedef UnresolvedSetIterator conversion_iterator; - conversion_iterator conversion_begin() const { - return data().Conversions.get(getASTContext()).begin(); - } - conversion_iterator conversion_end() const { - return data().Conversions.get(getASTContext()).end(); - } - - /// Removes a conversion function from this class. The conversion - /// function must currently be a member of this class. Furthermore, - /// this class must currently be in the process of being defined. - void removeConversion(const NamedDecl *Old); - - /// \brief Get all conversion functions visible in current class, - /// including conversion function templates. - llvm::iterator_range<conversion_iterator> getVisibleConversionFunctions(); - - /// Determine whether this class is an aggregate (C++ [dcl.init.aggr]), - /// which is a class with no user-declared constructors, no private - /// or protected non-static data members, no base classes, and no virtual - /// functions (C++ [dcl.init.aggr]p1). - bool isAggregate() const { return data().Aggregate; } - - /// \brief Whether this class has any in-class initializers - /// for non-static data members (including those in anonymous unions or - /// structs). - bool hasInClassInitializer() const { return data().HasInClassInitializer; } - - /// \brief Whether this class or any of its subobjects has any members of - /// reference type which would make value-initialization ill-formed. - /// - /// Per C++03 [dcl.init]p5: - /// - if T is a non-union class type without a user-declared constructor, - /// then every non-static data member and base-class component of T is - /// value-initialized [...] A program that calls for [...] - /// value-initialization of an entity of reference type is ill-formed. - bool hasUninitializedReferenceMember() const { - return !isUnion() && !hasUserDeclaredConstructor() && - data().HasUninitializedReferenceMember; - } - - /// \brief Whether this class is a POD-type (C++ [class]p4) - /// - /// For purposes of this function a class is POD if it is an aggregate - /// that has no non-static non-POD data members, no reference data - /// members, no user-defined copy assignment operator and no - /// user-defined destructor. - /// - /// Note that this is the C++ TR1 definition of POD. - bool isPOD() const { return data().PlainOldData; } - - /// \brief True if this class is C-like, without C++-specific features, e.g. - /// it contains only public fields, no bases, tag kind is not 'class', etc. - bool isCLike() const; - - /// \brief Determine whether this is an empty class in the sense of - /// (C++11 [meta.unary.prop]). - /// - /// A non-union class is empty iff it has a virtual function, virtual base, - /// data member (other than 0-width bit-field) or inherits from a non-empty - /// class. - /// - /// \note This does NOT include a check for union-ness. - bool isEmpty() const { return data().Empty; } - - /// Whether this class is polymorphic (C++ [class.virtual]), - /// which means that the class contains or inherits a virtual function. - bool isPolymorphic() const { return data().Polymorphic; } - - /// \brief Determine whether this class has a pure virtual function. - /// - /// The class is is abstract per (C++ [class.abstract]p2) if it declares - /// a pure virtual function or inherits a pure virtual function that is - /// not overridden. - bool isAbstract() const { return data().Abstract; } - - /// \brief Determine whether this class has standard layout per - /// (C++ [class]p7) - bool isStandardLayout() const { return data().IsStandardLayout; } - - /// \brief Determine whether this class, or any of its class subobjects, - /// contains a mutable field. - bool hasMutableFields() const { return data().HasMutableFields; } - - /// \brief Determine whether this class has any variant members. - bool hasVariantMembers() const { return data().HasVariantMembers; } - - /// \brief Determine whether this class has a trivial default constructor - /// (C++11 [class.ctor]p5). - bool hasTrivialDefaultConstructor() const { - return hasDefaultConstructor() && - (data().HasTrivialSpecialMembers & SMF_DefaultConstructor); - } - - /// \brief Determine whether this class has a non-trivial default constructor - /// (C++11 [class.ctor]p5). - bool hasNonTrivialDefaultConstructor() const { - return (data().DeclaredNonTrivialSpecialMembers & SMF_DefaultConstructor) || - (needsImplicitDefaultConstructor() && - !(data().HasTrivialSpecialMembers & SMF_DefaultConstructor)); - } - - /// \brief Determine whether this class has at least one constexpr constructor - /// other than the copy or move constructors. - bool hasConstexprNonCopyMoveConstructor() const { - return data().HasConstexprNonCopyMoveConstructor || - (needsImplicitDefaultConstructor() && - defaultedDefaultConstructorIsConstexpr()); - } - - /// \brief Determine whether a defaulted default constructor for this class - /// would be constexpr. - bool defaultedDefaultConstructorIsConstexpr() const { - return data().DefaultedDefaultConstructorIsConstexpr && - (!isUnion() || hasInClassInitializer() || !hasVariantMembers()); - } - - /// \brief Determine whether this class has a constexpr default constructor. - bool hasConstexprDefaultConstructor() const { - return data().HasConstexprDefaultConstructor || - (needsImplicitDefaultConstructor() && - defaultedDefaultConstructorIsConstexpr()); - } - - /// \brief Determine whether this class has a trivial copy constructor - /// (C++ [class.copy]p6, C++11 [class.copy]p12) - bool hasTrivialCopyConstructor() const { - return data().HasTrivialSpecialMembers & SMF_CopyConstructor; - } - - /// \brief Determine whether this class has a non-trivial copy constructor - /// (C++ [class.copy]p6, C++11 [class.copy]p12) - bool hasNonTrivialCopyConstructor() const { - return data().DeclaredNonTrivialSpecialMembers & SMF_CopyConstructor || - !hasTrivialCopyConstructor(); - } - - /// \brief Determine whether this class has a trivial move constructor - /// (C++11 [class.copy]p12) - bool hasTrivialMoveConstructor() const { - return hasMoveConstructor() && - (data().HasTrivialSpecialMembers & SMF_MoveConstructor); - } - - /// \brief Determine whether this class has a non-trivial move constructor - /// (C++11 [class.copy]p12) - bool hasNonTrivialMoveConstructor() const { - return (data().DeclaredNonTrivialSpecialMembers & SMF_MoveConstructor) || - (needsImplicitMoveConstructor() && - !(data().HasTrivialSpecialMembers & SMF_MoveConstructor)); - } - - /// \brief Determine whether this class has a trivial copy assignment operator - /// (C++ [class.copy]p11, C++11 [class.copy]p25) - bool hasTrivialCopyAssignment() const { - return data().HasTrivialSpecialMembers & SMF_CopyAssignment; - } - - /// \brief Determine whether this class has a non-trivial copy assignment - /// operator (C++ [class.copy]p11, C++11 [class.copy]p25) - bool hasNonTrivialCopyAssignment() const { - return data().DeclaredNonTrivialSpecialMembers & SMF_CopyAssignment || - !hasTrivialCopyAssignment(); - } - - /// \brief Determine whether this class has a trivial move assignment operator - /// (C++11 [class.copy]p25) - bool hasTrivialMoveAssignment() const { - return hasMoveAssignment() && - (data().HasTrivialSpecialMembers & SMF_MoveAssignment); - } - - /// \brief Determine whether this class has a non-trivial move assignment - /// operator (C++11 [class.copy]p25) - bool hasNonTrivialMoveAssignment() const { - return (data().DeclaredNonTrivialSpecialMembers & SMF_MoveAssignment) || - (needsImplicitMoveAssignment() && - !(data().HasTrivialSpecialMembers & SMF_MoveAssignment)); - } - - /// \brief Determine whether this class has a trivial destructor - /// (C++ [class.dtor]p3) - bool hasTrivialDestructor() const { - return data().HasTrivialSpecialMembers & SMF_Destructor; - } - - /// \brief Determine whether this class has a non-trivial destructor - /// (C++ [class.dtor]p3) - bool hasNonTrivialDestructor() const { - return !(data().HasTrivialSpecialMembers & SMF_Destructor); - } - - /// \brief Determine whether this class has a destructor which has no - /// semantic effect. - /// - /// Any such destructor will be trivial, public, defaulted and not deleted, - /// and will call only irrelevant destructors. - bool hasIrrelevantDestructor() const { - return data().HasIrrelevantDestructor; - } - - /// \brief Determine whether this class has a non-literal or/ volatile type - /// non-static data member or base class. - bool hasNonLiteralTypeFieldsOrBases() const { - return data().HasNonLiteralTypeFieldsOrBases; - } - - /// \brief Determine whether this class is considered trivially copyable per - /// (C++11 [class]p6). - bool isTriviallyCopyable() const; - - /// \brief Determine whether this class is considered trivial. - /// - /// C++11 [class]p6: - /// "A trivial class is a class that has a trivial default constructor and - /// is trivially copiable." - bool isTrivial() const { - return isTriviallyCopyable() && hasTrivialDefaultConstructor(); - } - - /// \brief Determine whether this class is a literal type. - /// - /// C++11 [basic.types]p10: - /// A class type that has all the following properties: - /// - it has a trivial destructor - /// - every constructor call and full-expression in the - /// brace-or-equal-intializers for non-static data members (if any) is - /// a constant expression. - /// - it is an aggregate type or has at least one constexpr constructor - /// or constructor template that is not a copy or move constructor, and - /// - all of its non-static data members and base classes are of literal - /// types - /// - /// We resolve DR1361 by ignoring the second bullet. We resolve DR1452 by - /// treating types with trivial default constructors as literal types. - bool isLiteral() const { - return hasTrivialDestructor() && - (isAggregate() || hasConstexprNonCopyMoveConstructor() || - hasTrivialDefaultConstructor()) && - !hasNonLiteralTypeFieldsOrBases(); - } - - /// \brief If this record is an instantiation of a member class, - /// retrieves the member class from which it was instantiated. - /// - /// This routine will return non-null for (non-templated) member - /// classes of class templates. For example, given: - /// - /// \code - /// template<typename T> - /// struct X { - /// struct A { }; - /// }; - /// \endcode - /// - /// The declaration for X<int>::A is a (non-templated) CXXRecordDecl - /// whose parent is the class template specialization X<int>. For - /// this declaration, getInstantiatedFromMemberClass() will return - /// the CXXRecordDecl X<T>::A. When a complete definition of - /// X<int>::A is required, it will be instantiated from the - /// declaration returned by getInstantiatedFromMemberClass(). - CXXRecordDecl *getInstantiatedFromMemberClass() const; - - /// \brief If this class is an instantiation of a member class of a - /// class template specialization, retrieves the member specialization - /// information. - MemberSpecializationInfo *getMemberSpecializationInfo() const; - - /// \brief Specify that this record is an instantiation of the - /// member class \p RD. - void setInstantiationOfMemberClass(CXXRecordDecl *RD, - TemplateSpecializationKind TSK); - - /// \brief Retrieves the class template that is described by this - /// class declaration. - /// - /// Every class template is represented as a ClassTemplateDecl and a - /// CXXRecordDecl. The former contains template properties (such as - /// the template parameter lists) while the latter contains the - /// actual description of the template's - /// contents. ClassTemplateDecl::getTemplatedDecl() retrieves the - /// CXXRecordDecl that from a ClassTemplateDecl, while - /// getDescribedClassTemplate() retrieves the ClassTemplateDecl from - /// a CXXRecordDecl. - ClassTemplateDecl *getDescribedClassTemplate() const; - - void setDescribedClassTemplate(ClassTemplateDecl *Template); - - /// \brief Determine whether this particular class is a specialization or - /// instantiation of a class template or member class of a class template, - /// and how it was instantiated or specialized. - TemplateSpecializationKind getTemplateSpecializationKind() const; - - /// \brief Set the kind of specialization or template instantiation this is. - void setTemplateSpecializationKind(TemplateSpecializationKind TSK); - - /// \brief Retrieve the record declaration from which this record could be - /// instantiated. Returns null if this class is not a template instantiation. - const CXXRecordDecl *getTemplateInstantiationPattern() const; - - CXXRecordDecl *getTemplateInstantiationPattern() { - return const_cast<CXXRecordDecl *>(const_cast<const CXXRecordDecl *>(this) - ->getTemplateInstantiationPattern()); - } - - /// \brief Returns the destructor decl for this class. - CXXDestructorDecl *getDestructor() const; - - /// \brief Returns true if the class destructor, or any implicitly invoked - /// destructors are marked noreturn. - bool isAnyDestructorNoReturn() const; - - /// \brief If the class is a local class [class.local], returns - /// the enclosing function declaration. - const FunctionDecl *isLocalClass() const { - if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(getDeclContext())) - return RD->isLocalClass(); - - return dyn_cast<FunctionDecl>(getDeclContext()); - } - - FunctionDecl *isLocalClass() { - return const_cast<FunctionDecl*>( - const_cast<const CXXRecordDecl*>(this)->isLocalClass()); - } - - /// \brief Determine whether this dependent class is a current instantiation, - /// when viewed from within the given context. - bool isCurrentInstantiation(const DeclContext *CurContext) const; - - /// \brief Determine whether this class is derived from the class \p Base. - /// - /// This routine only determines whether this class is derived from \p Base, - /// but does not account for factors that may make a Derived -> Base class - /// ill-formed, such as private/protected inheritance or multiple, ambiguous - /// base class subobjects. - /// - /// \param Base the base class we are searching for. - /// - /// \returns true if this class is derived from Base, false otherwise. - bool isDerivedFrom(const CXXRecordDecl *Base) const; - - /// \brief Determine whether this class is derived from the type \p Base. - /// - /// This routine only determines whether this class is derived from \p Base, - /// but does not account for factors that may make a Derived -> Base class - /// ill-formed, such as private/protected inheritance or multiple, ambiguous - /// base class subobjects. - /// - /// \param Base the base class we are searching for. - /// - /// \param Paths will contain the paths taken from the current class to the - /// given \p Base class. - /// - /// \returns true if this class is derived from \p Base, false otherwise. - /// - /// \todo add a separate parameter to configure IsDerivedFrom, rather than - /// tangling input and output in \p Paths - bool isDerivedFrom(const CXXRecordDecl *Base, CXXBasePaths &Paths) const; - - /// \brief Determine whether this class is virtually derived from - /// the class \p Base. - /// - /// This routine only determines whether this class is virtually - /// derived from \p Base, but does not account for factors that may - /// make a Derived -> Base class ill-formed, such as - /// private/protected inheritance or multiple, ambiguous base class - /// subobjects. - /// - /// \param Base the base class we are searching for. - /// - /// \returns true if this class is virtually derived from Base, - /// false otherwise. - bool isVirtuallyDerivedFrom(const CXXRecordDecl *Base) const; - - /// \brief Determine whether this class is provably not derived from - /// the type \p Base. - bool isProvablyNotDerivedFrom(const CXXRecordDecl *Base) const; - - /// \brief Function type used by forallBases() as a callback. - /// - /// \param BaseDefinition the definition of the base class - /// - /// \returns true if this base matched the search criteria - typedef llvm::function_ref<bool(const CXXRecordDecl *BaseDefinition)> - ForallBasesCallback; - - /// \brief Determines if the given callback holds for all the direct - /// or indirect base classes of this type. - /// - /// The class itself does not count as a base class. This routine - /// returns false if the class has non-computable base classes. - /// - /// \param BaseMatches Callback invoked for each (direct or indirect) base - /// class of this type, or if \p AllowShortCircuit is true then until a call - /// returns false. - /// - /// \param AllowShortCircuit if false, forces the callback to be called - /// for every base class, even if a dependent or non-matching base was - /// found. - bool forallBases(ForallBasesCallback BaseMatches, - bool AllowShortCircuit = true) const; - - /// \brief Function type used by lookupInBases() to determine whether a - /// specific base class subobject matches the lookup criteria. - /// - /// \param Specifier the base-class specifier that describes the inheritance - /// from the base class we are trying to match. - /// - /// \param Path the current path, from the most-derived class down to the - /// base named by the \p Specifier. - /// - /// \returns true if this base matched the search criteria, false otherwise. - typedef llvm::function_ref<bool(const CXXBaseSpecifier *Specifier, - CXXBasePath &Path)> BaseMatchesCallback; - - /// \brief Look for entities within the base classes of this C++ class, - /// transitively searching all base class subobjects. - /// - /// This routine uses the callback function \p BaseMatches to find base - /// classes meeting some search criteria, walking all base class subobjects - /// and populating the given \p Paths structure with the paths through the - /// inheritance hierarchy that resulted in a match. On a successful search, - /// the \p Paths structure can be queried to retrieve the matching paths and - /// to determine if there were any ambiguities. - /// - /// \param BaseMatches callback function used to determine whether a given - /// base matches the user-defined search criteria. - /// - /// \param Paths used to record the paths from this class to its base class - /// subobjects that match the search criteria. - /// - /// \returns true if there exists any path from this class to a base class - /// subobject that matches the search criteria. - bool lookupInBases(BaseMatchesCallback BaseMatches, - CXXBasePaths &Paths) const; - - /// \brief Base-class lookup callback that determines whether the given - /// base class specifier refers to a specific class declaration. - /// - /// This callback can be used with \c lookupInBases() to determine whether - /// a given derived class has is a base class subobject of a particular type. - /// The base record pointer should refer to the canonical CXXRecordDecl of the - /// base class that we are searching for. - static bool FindBaseClass(const CXXBaseSpecifier *Specifier, - CXXBasePath &Path, const CXXRecordDecl *BaseRecord); - - /// \brief Base-class lookup callback that determines whether the - /// given base class specifier refers to a specific class - /// declaration and describes virtual derivation. - /// - /// This callback can be used with \c lookupInBases() to determine - /// whether a given derived class has is a virtual base class - /// subobject of a particular type. The base record pointer should - /// refer to the canonical CXXRecordDecl of the base class that we - /// are searching for. - static bool FindVirtualBaseClass(const CXXBaseSpecifier *Specifier, - CXXBasePath &Path, - const CXXRecordDecl *BaseRecord); - - /// \brief Base-class lookup callback that determines whether there exists - /// a tag with the given name. - /// - /// This callback can be used with \c lookupInBases() to find tag members - /// of the given name within a C++ class hierarchy. - static bool FindTagMember(const CXXBaseSpecifier *Specifier, - CXXBasePath &Path, DeclarationName Name); - - /// \brief Base-class lookup callback that determines whether there exists - /// a member with the given name. - /// - /// This callback can be used with \c lookupInBases() to find members - /// of the given name within a C++ class hierarchy. - static bool FindOrdinaryMember(const CXXBaseSpecifier *Specifier, - CXXBasePath &Path, DeclarationName Name); - - /// \brief Base-class lookup callback that determines whether there exists - /// a member with the given name that can be used in a nested-name-specifier. - /// - /// This callback can be used with \c lookupInBases() to find members of - /// the given name within a C++ class hierarchy that can occur within - /// nested-name-specifiers. - static bool FindNestedNameSpecifierMember(const CXXBaseSpecifier *Specifier, - CXXBasePath &Path, - DeclarationName Name); - - /// \brief Retrieve the final overriders for each virtual member - /// function in the class hierarchy where this class is the - /// most-derived class in the class hierarchy. - void getFinalOverriders(CXXFinalOverriderMap &FinaOverriders) const; - - /// \brief Get the indirect primary bases for this class. - void getIndirectPrimaryBases(CXXIndirectPrimaryBaseSet& Bases) const; - - /// Renders and displays an inheritance diagram - /// for this C++ class and all of its base classes (transitively) using - /// GraphViz. - void viewInheritance(ASTContext& Context) const; - - /// \brief Calculates the access of a decl that is reached - /// along a path. - static AccessSpecifier MergeAccess(AccessSpecifier PathAccess, - AccessSpecifier DeclAccess) { - assert(DeclAccess != AS_none); - if (DeclAccess == AS_private) return AS_none; - return (PathAccess > DeclAccess ? PathAccess : DeclAccess); - } - - /// \brief Indicates that the declaration of a defaulted or deleted special - /// member function is now complete. - void finishedDefaultedOrDeletedMember(CXXMethodDecl *MD); - - /// \brief Indicates that the definition of this class is now complete. - void completeDefinition() override; - - /// \brief Indicates that the definition of this class is now complete, - /// and provides a final overrider map to help determine - /// - /// \param FinalOverriders The final overrider map for this class, which can - /// be provided as an optimization for abstract-class checking. If NULL, - /// final overriders will be computed if they are needed to complete the - /// definition. - void completeDefinition(CXXFinalOverriderMap *FinalOverriders); - - /// \brief Determine whether this class may end up being abstract, even though - /// it is not yet known to be abstract. - /// - /// \returns true if this class is not known to be abstract but has any - /// base classes that are abstract. In this case, \c completeDefinition() - /// will need to compute final overriders to determine whether the class is - /// actually abstract. - bool mayBeAbstract() const; - - /// \brief If this is the closure type of a lambda expression, retrieve the - /// number to be used for name mangling in the Itanium C++ ABI. - /// - /// Zero indicates that this closure type has internal linkage, so the - /// mangling number does not matter, while a non-zero value indicates which - /// lambda expression this is in this particular context. - unsigned getLambdaManglingNumber() const { - assert(isLambda() && "Not a lambda closure type!"); - return getLambdaData().ManglingNumber; - } - - /// \brief Retrieve the declaration that provides additional context for a - /// lambda, when the normal declaration context is not specific enough. - /// - /// Certain contexts (default arguments of in-class function parameters and - /// the initializers of data members) have separate name mangling rules for - /// lambdas within the Itanium C++ ABI. For these cases, this routine provides - /// the declaration in which the lambda occurs, e.g., the function parameter - /// or the non-static data member. Otherwise, it returns NULL to imply that - /// the declaration context suffices. - Decl *getLambdaContextDecl() const { - assert(isLambda() && "Not a lambda closure type!"); - return getLambdaData().ContextDecl; - } - - /// \brief Set the mangling number and context declaration for a lambda - /// class. - void setLambdaMangling(unsigned ManglingNumber, Decl *ContextDecl) { - getLambdaData().ManglingNumber = ManglingNumber; - getLambdaData().ContextDecl = ContextDecl; - } - - /// \brief Returns the inheritance model used for this record. - MSInheritanceAttr::Spelling getMSInheritanceModel() const; - /// \brief Calculate what the inheritance model would be for this class. - MSInheritanceAttr::Spelling calculateInheritanceModel() const; - - /// In the Microsoft C++ ABI, use zero for the field offset of a null data - /// member pointer if we can guarantee that zero is not a valid field offset, - /// or if the member pointer has multiple fields. Polymorphic classes have a - /// vfptr at offset zero, so we can use zero for null. If there are multiple - /// fields, we can use zero even if it is a valid field offset because - /// null-ness testing will check the other fields. - bool nullFieldOffsetIsZero() const { - return !MSInheritanceAttr::hasOnlyOneField(/*IsMemberFunction=*/false, - getMSInheritanceModel()) || - (hasDefinition() && isPolymorphic()); - } - - /// \brief Controls when vtordisps will be emitted if this record is used as a - /// virtual base. - MSVtorDispAttr::Mode getMSVtorDispMode() const; - - /// \brief Determine whether this lambda expression was known to be dependent - /// at the time it was created, even if its context does not appear to be - /// dependent. - /// - /// This flag is a workaround for an issue with parsing, where default - /// arguments are parsed before their enclosing function declarations have - /// been created. This means that any lambda expressions within those - /// default arguments will have as their DeclContext the context enclosing - /// the function declaration, which may be non-dependent even when the - /// function declaration itself is dependent. This flag indicates when we - /// know that the lambda is dependent despite that. - bool isDependentLambda() const { - return isLambda() && getLambdaData().Dependent; - } - - TypeSourceInfo *getLambdaTypeInfo() const { - return getLambdaData().MethodTyInfo; - } - - static bool classof(const Decl *D) { return classofKind(D->getKind()); } - static bool classofKind(Kind K) { - return K >= firstCXXRecord && K <= lastCXXRecord; - } - - friend class ASTDeclReader; - friend class ASTDeclWriter; - friend class ASTReader; - friend class ASTWriter; -}; - -/// \brief Represents a static or instance method of a struct/union/class. -/// -/// In the terminology of the C++ Standard, these are the (static and -/// non-static) member functions, whether virtual or not. -class CXXMethodDecl : public FunctionDecl { - void anchor() override; -protected: - CXXMethodDecl(Kind DK, ASTContext &C, CXXRecordDecl *RD, - SourceLocation StartLoc, const DeclarationNameInfo &NameInfo, - QualType T, TypeSourceInfo *TInfo, - StorageClass SC, bool isInline, - bool isConstexpr, SourceLocation EndLocation) - : FunctionDecl(DK, C, RD, StartLoc, NameInfo, T, TInfo, - SC, isInline, isConstexpr) { - if (EndLocation.isValid()) - setRangeEnd(EndLocation); - } - -public: - static CXXMethodDecl *Create(ASTContext &C, CXXRecordDecl *RD, - SourceLocation StartLoc, - const DeclarationNameInfo &NameInfo, - QualType T, TypeSourceInfo *TInfo, - StorageClass SC, - bool isInline, - bool isConstexpr, - SourceLocation EndLocation); - - static CXXMethodDecl *CreateDeserialized(ASTContext &C, unsigned ID); - - bool isStatic() const; - bool isInstance() const { return !isStatic(); } - - /// Returns true if the given operator is implicitly static in a record - /// context. - static bool isStaticOverloadedOperator(OverloadedOperatorKind OOK) { - // [class.free]p1: - // Any allocation function for a class T is a static member - // (even if not explicitly declared static). - // [class.free]p6 Any deallocation function for a class X is a static member - // (even if not explicitly declared static). - return OOK == OO_New || OOK == OO_Array_New || OOK == OO_Delete || - OOK == OO_Array_Delete; - } - - bool isConst() const { return getType()->castAs<FunctionType>()->isConst(); } - bool isVolatile() const { return getType()->castAs<FunctionType>()->isVolatile(); } - - bool isVirtual() const { - CXXMethodDecl *CD = - cast<CXXMethodDecl>(const_cast<CXXMethodDecl*>(this)->getCanonicalDecl()); - - // Member function is virtual if it is marked explicitly so, or if it is - // declared in __interface -- then it is automatically pure virtual. - if (CD->isVirtualAsWritten() || CD->isPure()) - return true; - - return (CD->begin_overridden_methods() != CD->end_overridden_methods()); - } - - /// \brief Determine whether this is a usual deallocation function - /// (C++ [basic.stc.dynamic.deallocation]p2), which is an overloaded - /// delete or delete[] operator with a particular signature. - bool isUsualDeallocationFunction() const; - - /// \brief Determine whether this is a copy-assignment operator, regardless - /// of whether it was declared implicitly or explicitly. - bool isCopyAssignmentOperator() const; - - /// \brief Determine whether this is a move assignment operator. - bool isMoveAssignmentOperator() const; - - CXXMethodDecl *getCanonicalDecl() override { - return cast<CXXMethodDecl>(FunctionDecl::getCanonicalDecl()); - } - const CXXMethodDecl *getCanonicalDecl() const { - return const_cast<CXXMethodDecl*>(this)->getCanonicalDecl(); - } - - CXXMethodDecl *getMostRecentDecl() { - return cast<CXXMethodDecl>( - static_cast<FunctionDecl *>(this)->getMostRecentDecl()); - } - const CXXMethodDecl *getMostRecentDecl() const { - return const_cast<CXXMethodDecl*>(this)->getMostRecentDecl(); - } - - /// True if this method is user-declared and was not - /// deleted or defaulted on its first declaration. - bool isUserProvided() const { - return !(isDeleted() || getCanonicalDecl()->isDefaulted()); - } - - /// - void addOverriddenMethod(const CXXMethodDecl *MD); - - typedef const CXXMethodDecl *const* method_iterator; - - method_iterator begin_overridden_methods() const; - method_iterator end_overridden_methods() const; - unsigned size_overridden_methods() const; - - /// Returns the parent of this method declaration, which - /// is the class in which this method is defined. - const CXXRecordDecl *getParent() const { - return cast<CXXRecordDecl>(FunctionDecl::getParent()); - } - - /// Returns the parent of this method declaration, which - /// is the class in which this method is defined. - CXXRecordDecl *getParent() { - return const_cast<CXXRecordDecl *>( - cast<CXXRecordDecl>(FunctionDecl::getParent())); - } - - /// \brief Returns the type of the \c this pointer. - /// - /// Should only be called for instance (i.e., non-static) methods. - QualType getThisType(ASTContext &C) const; - - unsigned getTypeQualifiers() const { - return getType()->getAs<FunctionProtoType>()->getTypeQuals(); - } - - /// \brief Retrieve the ref-qualifier associated with this method. - /// - /// In the following example, \c f() has an lvalue ref-qualifier, \c g() - /// has an rvalue ref-qualifier, and \c h() has no ref-qualifier. - /// @code - /// struct X { - /// void f() &; - /// void g() &&; - /// void h(); - /// }; - /// @endcode - RefQualifierKind getRefQualifier() const { - return getType()->getAs<FunctionProtoType>()->getRefQualifier(); - } - - bool hasInlineBody() const; - - /// \brief Determine whether this is a lambda closure type's static member - /// function that is used for the result of the lambda's conversion to - /// function pointer (for a lambda with no captures). - /// - /// The function itself, if used, will have a placeholder body that will be - /// supplied by IR generation to either forward to the function call operator - /// or clone the function call operator. - bool isLambdaStaticInvoker() const; - - /// \brief Find the method in \p RD that corresponds to this one. - /// - /// Find if \p RD or one of the classes it inherits from override this method. - /// If so, return it. \p RD is assumed to be a subclass of the class defining - /// this method (or be the class itself), unless \p MayBeBase is set to true. - CXXMethodDecl * - getCorrespondingMethodInClass(const CXXRecordDecl *RD, - bool MayBeBase = false); - - const CXXMethodDecl * - getCorrespondingMethodInClass(const CXXRecordDecl *RD, - bool MayBeBase = false) const { - return const_cast<CXXMethodDecl *>(this) - ->getCorrespondingMethodInClass(RD, MayBeBase); - } - - // Implement isa/cast/dyncast/etc. - static bool classof(const Decl *D) { return classofKind(D->getKind()); } - static bool classofKind(Kind K) { - return K >= firstCXXMethod && K <= lastCXXMethod; - } -}; - -/// \brief Represents a C++ base or member initializer. -/// -/// This is part of a constructor initializer that -/// initializes one non-static member variable or one base class. For -/// example, in the following, both 'A(a)' and 'f(3.14159)' are member -/// initializers: -/// -/// \code -/// class A { }; -/// class B : public A { -/// float f; -/// public: -/// B(A& a) : A(a), f(3.14159) { } -/// }; -/// \endcode -class CXXCtorInitializer final - : private llvm::TrailingObjects<CXXCtorInitializer, VarDecl *> { - /// \brief Either the base class name/delegating constructor type (stored as - /// a TypeSourceInfo*), an normal field (FieldDecl), or an anonymous field - /// (IndirectFieldDecl*) being initialized. - llvm::PointerUnion3<TypeSourceInfo *, FieldDecl *, IndirectFieldDecl *> - Initializee; - - /// \brief The source location for the field name or, for a base initializer - /// pack expansion, the location of the ellipsis. - /// - /// In the case of a delegating - /// constructor, it will still include the type's source location as the - /// Initializee points to the CXXConstructorDecl (to allow loop detection). - SourceLocation MemberOrEllipsisLocation; - - /// \brief The argument used to initialize the base or member, which may - /// end up constructing an object (when multiple arguments are involved). - Stmt *Init; - - /// \brief Location of the left paren of the ctor-initializer. - SourceLocation LParenLoc; - - /// \brief Location of the right paren of the ctor-initializer. - SourceLocation RParenLoc; - - /// \brief If the initializee is a type, whether that type makes this - /// a delegating initialization. - bool IsDelegating : 1; - - /// \brief If the initializer is a base initializer, this keeps track - /// of whether the base is virtual or not. - bool IsVirtual : 1; - - /// \brief Whether or not the initializer is explicitly written - /// in the sources. - bool IsWritten : 1; - - /// If IsWritten is true, then this number keeps track of the textual order - /// of this initializer in the original sources, counting from 0; otherwise, - /// it stores the number of array index variables stored after this object - /// in memory. - unsigned SourceOrderOrNumArrayIndices : 13; - - CXXCtorInitializer(ASTContext &Context, FieldDecl *Member, - SourceLocation MemberLoc, SourceLocation L, Expr *Init, - SourceLocation R, VarDecl **Indices, unsigned NumIndices); - -public: - /// \brief Creates a new base-class initializer. - explicit - CXXCtorInitializer(ASTContext &Context, TypeSourceInfo *TInfo, bool IsVirtual, - SourceLocation L, Expr *Init, SourceLocation R, - SourceLocation EllipsisLoc); - - /// \brief Creates a new member initializer. - explicit - CXXCtorInitializer(ASTContext &Context, FieldDecl *Member, - SourceLocation MemberLoc, SourceLocation L, Expr *Init, - SourceLocation R); - - /// \brief Creates a new anonymous field initializer. - explicit - CXXCtorInitializer(ASTContext &Context, IndirectFieldDecl *Member, - SourceLocation MemberLoc, SourceLocation L, Expr *Init, - SourceLocation R); - - /// \brief Creates a new delegating initializer. - explicit - CXXCtorInitializer(ASTContext &Context, TypeSourceInfo *TInfo, - SourceLocation L, Expr *Init, SourceLocation R); - - /// \brief Creates a new member initializer that optionally contains - /// array indices used to describe an elementwise initialization. - static CXXCtorInitializer *Create(ASTContext &Context, FieldDecl *Member, - SourceLocation MemberLoc, SourceLocation L, - Expr *Init, SourceLocation R, - VarDecl **Indices, unsigned NumIndices); - - /// \brief Determine whether this initializer is initializing a base class. - bool isBaseInitializer() const { - return Initializee.is<TypeSourceInfo*>() && !IsDelegating; - } - - /// \brief Determine whether this initializer is initializing a non-static - /// data member. - bool isMemberInitializer() const { return Initializee.is<FieldDecl*>(); } - - bool isAnyMemberInitializer() const { - return isMemberInitializer() || isIndirectMemberInitializer(); - } - - bool isIndirectMemberInitializer() const { - return Initializee.is<IndirectFieldDecl*>(); - } - - /// \brief Determine whether this initializer is an implicit initializer - /// generated for a field with an initializer defined on the member - /// declaration. - /// - /// In-class member initializers (also known as "non-static data member - /// initializations", NSDMIs) were introduced in C++11. - bool isInClassMemberInitializer() const { - return Init->getStmtClass() == Stmt::CXXDefaultInitExprClass; - } - - /// \brief Determine whether this initializer is creating a delegating - /// constructor. - bool isDelegatingInitializer() const { - return Initializee.is<TypeSourceInfo*>() && IsDelegating; - } - - /// \brief Determine whether this initializer is a pack expansion. - bool isPackExpansion() const { - return isBaseInitializer() && MemberOrEllipsisLocation.isValid(); - } - - // \brief For a pack expansion, returns the location of the ellipsis. - SourceLocation getEllipsisLoc() const { - assert(isPackExpansion() && "Initializer is not a pack expansion"); - return MemberOrEllipsisLocation; - } - - /// If this is a base class initializer, returns the type of the - /// base class with location information. Otherwise, returns an NULL - /// type location. - TypeLoc getBaseClassLoc() const; - - /// If this is a base class initializer, returns the type of the base class. - /// Otherwise, returns null. - const Type *getBaseClass() const; - - /// Returns whether the base is virtual or not. - bool isBaseVirtual() const { - assert(isBaseInitializer() && "Must call this on base initializer!"); - - return IsVirtual; - } - - /// \brief Returns the declarator information for a base class or delegating - /// initializer. - TypeSourceInfo *getTypeSourceInfo() const { - return Initializee.dyn_cast<TypeSourceInfo *>(); - } - - /// \brief If this is a member initializer, returns the declaration of the - /// non-static data member being initialized. Otherwise, returns null. - FieldDecl *getMember() const { - if (isMemberInitializer()) - return Initializee.get<FieldDecl*>(); - return nullptr; - } - FieldDecl *getAnyMember() const { - if (isMemberInitializer()) - return Initializee.get<FieldDecl*>(); - if (isIndirectMemberInitializer()) - return Initializee.get<IndirectFieldDecl*>()->getAnonField(); - return nullptr; - } - - IndirectFieldDecl *getIndirectMember() const { - if (isIndirectMemberInitializer()) - return Initializee.get<IndirectFieldDecl*>(); - return nullptr; - } - - SourceLocation getMemberLocation() const { - return MemberOrEllipsisLocation; - } - - /// \brief Determine the source location of the initializer. - SourceLocation getSourceLocation() const; - - /// \brief Determine the source range covering the entire initializer. - SourceRange getSourceRange() const LLVM_READONLY; - - /// \brief Determine whether this initializer is explicitly written - /// in the source code. - bool isWritten() const { return IsWritten; } - - /// \brief Return the source position of the initializer, counting from 0. - /// If the initializer was implicit, -1 is returned. - int getSourceOrder() const { - return IsWritten ? static_cast<int>(SourceOrderOrNumArrayIndices) : -1; - } - - /// \brief Set the source order of this initializer. - /// - /// This can only be called once for each initializer; it cannot be called - /// on an initializer having a positive number of (implicit) array indices. - /// - /// This assumes that the initializer was written in the source code, and - /// ensures that isWritten() returns true. - void setSourceOrder(int pos) { - assert(!IsWritten && - "calling twice setSourceOrder() on the same initializer"); - assert(SourceOrderOrNumArrayIndices == 0 && - "setSourceOrder() used when there are implicit array indices"); - assert(pos >= 0 && - "setSourceOrder() used to make an initializer implicit"); - IsWritten = true; - SourceOrderOrNumArrayIndices = static_cast<unsigned>(pos); - } - - SourceLocation getLParenLoc() const { return LParenLoc; } - SourceLocation getRParenLoc() const { return RParenLoc; } - - /// \brief Determine the number of implicit array indices used while - /// described an array member initialization. - unsigned getNumArrayIndices() const { - return IsWritten ? 0 : SourceOrderOrNumArrayIndices; - } - - /// \brief Retrieve a particular array index variable used to - /// describe an array member initialization. - VarDecl *getArrayIndex(unsigned I) { - assert(I < getNumArrayIndices() && "Out of bounds member array index"); - return getTrailingObjects<VarDecl *>()[I]; - } - const VarDecl *getArrayIndex(unsigned I) const { - assert(I < getNumArrayIndices() && "Out of bounds member array index"); - return getTrailingObjects<VarDecl *>()[I]; - } - void setArrayIndex(unsigned I, VarDecl *Index) { - assert(I < getNumArrayIndices() && "Out of bounds member array index"); - getTrailingObjects<VarDecl *>()[I] = Index; - } - ArrayRef<VarDecl *> getArrayIndexes() { - assert(getNumArrayIndices() != 0 && "Getting indexes for non-array init"); - return llvm::makeArrayRef(getTrailingObjects<VarDecl *>(), - getNumArrayIndices()); - } - - /// \brief Get the initializer. - Expr *getInit() const { return static_cast<Expr*>(Init); } - - friend TrailingObjects; -}; - -/// \brief Represents a C++ constructor within a class. -/// -/// For example: -/// -/// \code -/// class X { -/// public: -/// explicit X(int); // represented by a CXXConstructorDecl. -/// }; -/// \endcode -class CXXConstructorDecl : public CXXMethodDecl { - void anchor() override; - /// \brief Whether this constructor declaration has the \c explicit keyword - /// specified. - bool IsExplicitSpecified : 1; - - /// \name Support for base and member initializers. - /// \{ - /// \brief The arguments used to initialize the base or member. - LazyCXXCtorInitializersPtr CtorInitializers; - unsigned NumCtorInitializers; - /// \} - - CXXConstructorDecl(ASTContext &C, CXXRecordDecl *RD, SourceLocation StartLoc, - const DeclarationNameInfo &NameInfo, - QualType T, TypeSourceInfo *TInfo, - bool isExplicitSpecified, bool isInline, - bool isImplicitlyDeclared, bool isConstexpr) - : CXXMethodDecl(CXXConstructor, C, RD, StartLoc, NameInfo, T, TInfo, - SC_None, isInline, isConstexpr, SourceLocation()), - IsExplicitSpecified(isExplicitSpecified), CtorInitializers(nullptr), - NumCtorInitializers(0) { - setImplicit(isImplicitlyDeclared); - } - -public: - static CXXConstructorDecl *CreateDeserialized(ASTContext &C, unsigned ID); - static CXXConstructorDecl *Create(ASTContext &C, CXXRecordDecl *RD, - SourceLocation StartLoc, - const DeclarationNameInfo &NameInfo, - QualType T, TypeSourceInfo *TInfo, - bool isExplicit, - bool isInline, bool isImplicitlyDeclared, - bool isConstexpr); - - /// \brief Determine whether this constructor declaration has the - /// \c explicit keyword specified. - bool isExplicitSpecified() const { return IsExplicitSpecified; } - - /// \brief Determine whether this constructor was marked "explicit" or not. - bool isExplicit() const { - return cast<CXXConstructorDecl>(getFirstDecl())->isExplicitSpecified(); - } - - /// \brief Iterates through the member/base initializer list. - typedef CXXCtorInitializer **init_iterator; - - /// \brief Iterates through the member/base initializer list. - typedef CXXCtorInitializer *const *init_const_iterator; - - typedef llvm::iterator_range<init_iterator> init_range; - typedef llvm::iterator_range<init_const_iterator> init_const_range; - - init_range inits() { return init_range(init_begin(), init_end()); } - init_const_range inits() const { - return init_const_range(init_begin(), init_end()); - } - - /// \brief Retrieve an iterator to the first initializer. - init_iterator init_begin() { - const auto *ConstThis = this; - return const_cast<init_iterator>(ConstThis->init_begin()); - } - /// \brief Retrieve an iterator to the first initializer. - init_const_iterator init_begin() const; - - /// \brief Retrieve an iterator past the last initializer. - init_iterator init_end() { - return init_begin() + NumCtorInitializers; - } - /// \brief Retrieve an iterator past the last initializer. - init_const_iterator init_end() const { - return init_begin() + NumCtorInitializers; - } - - typedef std::reverse_iterator<init_iterator> init_reverse_iterator; - typedef std::reverse_iterator<init_const_iterator> - init_const_reverse_iterator; - - init_reverse_iterator init_rbegin() { - return init_reverse_iterator(init_end()); - } - init_const_reverse_iterator init_rbegin() const { - return init_const_reverse_iterator(init_end()); - } - - init_reverse_iterator init_rend() { - return init_reverse_iterator(init_begin()); - } - init_const_reverse_iterator init_rend() const { - return init_const_reverse_iterator(init_begin()); - } - - /// \brief Determine the number of arguments used to initialize the member - /// or base. - unsigned getNumCtorInitializers() const { - return NumCtorInitializers; - } - - void setNumCtorInitializers(unsigned numCtorInitializers) { - NumCtorInitializers = numCtorInitializers; - } - - void setCtorInitializers(CXXCtorInitializer **Initializers) { - CtorInitializers = Initializers; - } - - /// \brief Determine whether this constructor is a delegating constructor. - bool isDelegatingConstructor() const { - return (getNumCtorInitializers() == 1) && - init_begin()[0]->isDelegatingInitializer(); - } - - /// \brief When this constructor delegates to another, retrieve the target. - CXXConstructorDecl *getTargetConstructor() const; - - /// Whether this constructor is a default - /// constructor (C++ [class.ctor]p5), which can be used to - /// default-initialize a class of this type. - bool isDefaultConstructor() const; - - /// \brief Whether this constructor is a copy constructor (C++ [class.copy]p2, - /// which can be used to copy the class. - /// - /// \p TypeQuals will be set to the qualifiers on the - /// argument type. For example, \p TypeQuals would be set to \c - /// Qualifiers::Const for the following copy constructor: - /// - /// \code - /// class X { - /// public: - /// X(const X&); - /// }; - /// \endcode - bool isCopyConstructor(unsigned &TypeQuals) const; - - /// Whether this constructor is a copy - /// constructor (C++ [class.copy]p2, which can be used to copy the - /// class. - bool isCopyConstructor() const { - unsigned TypeQuals = 0; - return isCopyConstructor(TypeQuals); - } - - /// \brief Determine whether this constructor is a move constructor - /// (C++11 [class.copy]p3), which can be used to move values of the class. - /// - /// \param TypeQuals If this constructor is a move constructor, will be set - /// to the type qualifiers on the referent of the first parameter's type. - bool isMoveConstructor(unsigned &TypeQuals) const; - - /// \brief Determine whether this constructor is a move constructor - /// (C++11 [class.copy]p3), which can be used to move values of the class. - bool isMoveConstructor() const { - unsigned TypeQuals = 0; - return isMoveConstructor(TypeQuals); - } - - /// \brief Determine whether this is a copy or move constructor. - /// - /// \param TypeQuals Will be set to the type qualifiers on the reference - /// parameter, if in fact this is a copy or move constructor. - bool isCopyOrMoveConstructor(unsigned &TypeQuals) const; - - /// \brief Determine whether this a copy or move constructor. - bool isCopyOrMoveConstructor() const { - unsigned Quals; - return isCopyOrMoveConstructor(Quals); - } - - /// Whether this constructor is a - /// converting constructor (C++ [class.conv.ctor]), which can be - /// used for user-defined conversions. - bool isConvertingConstructor(bool AllowExplicit) const; - - /// \brief Determine whether this is a member template specialization that - /// would copy the object to itself. Such constructors are never used to copy - /// an object. - bool isSpecializationCopyingObject() const; - - /// \brief Get the constructor that this inheriting constructor is based on. - const CXXConstructorDecl *getInheritedConstructor() const; - - /// \brief Set the constructor that this inheriting constructor is based on. - void setInheritedConstructor(const CXXConstructorDecl *BaseCtor); - - CXXConstructorDecl *getCanonicalDecl() override { - return cast<CXXConstructorDecl>(FunctionDecl::getCanonicalDecl()); - } - const CXXConstructorDecl *getCanonicalDecl() const { - return const_cast<CXXConstructorDecl*>(this)->getCanonicalDecl(); - } - - // Implement isa/cast/dyncast/etc. - static bool classof(const Decl *D) { return classofKind(D->getKind()); } - static bool classofKind(Kind K) { return K == CXXConstructor; } - - friend class ASTDeclReader; - friend class ASTDeclWriter; -}; - -/// \brief Represents a C++ destructor within a class. -/// -/// For example: -/// -/// \code -/// class X { -/// public: -/// ~X(); // represented by a CXXDestructorDecl. -/// }; -/// \endcode -class CXXDestructorDecl : public CXXMethodDecl { - void anchor() override; - - FunctionDecl *OperatorDelete; - - CXXDestructorDecl(ASTContext &C, CXXRecordDecl *RD, SourceLocation StartLoc, - const DeclarationNameInfo &NameInfo, - QualType T, TypeSourceInfo *TInfo, - bool isInline, bool isImplicitlyDeclared) - : CXXMethodDecl(CXXDestructor, C, RD, StartLoc, NameInfo, T, TInfo, - SC_None, isInline, /*isConstexpr=*/false, SourceLocation()), - OperatorDelete(nullptr) { - setImplicit(isImplicitlyDeclared); - } - -public: - static CXXDestructorDecl *Create(ASTContext &C, CXXRecordDecl *RD, - SourceLocation StartLoc, - const DeclarationNameInfo &NameInfo, - QualType T, TypeSourceInfo* TInfo, - bool isInline, - bool isImplicitlyDeclared); - static CXXDestructorDecl *CreateDeserialized(ASTContext & C, unsigned ID); - - void setOperatorDelete(FunctionDecl *OD); - const FunctionDecl *getOperatorDelete() const { - return cast<CXXDestructorDecl>(getFirstDecl())->OperatorDelete; - } - - // Implement isa/cast/dyncast/etc. - static bool classof(const Decl *D) { return classofKind(D->getKind()); } - static bool classofKind(Kind K) { return K == CXXDestructor; } - - friend class ASTDeclReader; - friend class ASTDeclWriter; -}; - -/// \brief Represents a C++ conversion function within a class. -/// -/// For example: -/// -/// \code -/// class X { -/// public: -/// operator bool(); -/// }; -/// \endcode -class CXXConversionDecl : public CXXMethodDecl { - void anchor() override; - /// Whether this conversion function declaration is marked - /// "explicit", meaning that it can only be applied when the user - /// explicitly wrote a cast. This is a C++11 feature. - bool IsExplicitSpecified : 1; - - CXXConversionDecl(ASTContext &C, CXXRecordDecl *RD, SourceLocation StartLoc, - const DeclarationNameInfo &NameInfo, - QualType T, TypeSourceInfo *TInfo, - bool isInline, bool isExplicitSpecified, - bool isConstexpr, SourceLocation EndLocation) - : CXXMethodDecl(CXXConversion, C, RD, StartLoc, NameInfo, T, TInfo, - SC_None, isInline, isConstexpr, EndLocation), - IsExplicitSpecified(isExplicitSpecified) { } - -public: - static CXXConversionDecl *Create(ASTContext &C, CXXRecordDecl *RD, - SourceLocation StartLoc, - const DeclarationNameInfo &NameInfo, - QualType T, TypeSourceInfo *TInfo, - bool isInline, bool isExplicit, - bool isConstexpr, - SourceLocation EndLocation); - static CXXConversionDecl *CreateDeserialized(ASTContext &C, unsigned ID); - - /// Whether this conversion function declaration is marked - /// "explicit", meaning that it can only be used for direct initialization - /// (including explitly written casts). This is a C++11 feature. - bool isExplicitSpecified() const { return IsExplicitSpecified; } - - /// \brief Whether this is an explicit conversion operator (C++11 and later). - /// - /// Explicit conversion operators are only considered for direct - /// initialization, e.g., when the user has explicitly written a cast. - bool isExplicit() const { - return cast<CXXConversionDecl>(getFirstDecl())->isExplicitSpecified(); - } - - /// \brief Returns the type that this conversion function is converting to. - QualType getConversionType() const { - return getType()->getAs<FunctionType>()->getReturnType(); - } - - /// \brief Determine whether this conversion function is a conversion from - /// a lambda closure type to a block pointer. - bool isLambdaToBlockPointerConversion() const; - - // Implement isa/cast/dyncast/etc. - static bool classof(const Decl *D) { return classofKind(D->getKind()); } - static bool classofKind(Kind K) { return K == CXXConversion; } - - friend class ASTDeclReader; - friend class ASTDeclWriter; -}; - -/// \brief Represents a linkage specification. -/// -/// For example: -/// \code -/// extern "C" void foo(); -/// \endcode -class LinkageSpecDecl : public Decl, public DeclContext { - virtual void anchor(); -public: - /// \brief Represents the language in a linkage specification. - /// - /// The values are part of the serialization ABI for - /// ASTs and cannot be changed without altering that ABI. To help - /// ensure a stable ABI for this, we choose the DW_LANG_ encodings - /// from the dwarf standard. - enum LanguageIDs { - lang_c = /* DW_LANG_C */ 0x0002, - lang_cxx = /* DW_LANG_C_plus_plus */ 0x0004 - }; -private: - /// \brief The language for this linkage specification. - unsigned Language : 3; - /// \brief True if this linkage spec has braces. - /// - /// This is needed so that hasBraces() returns the correct result while the - /// linkage spec body is being parsed. Once RBraceLoc has been set this is - /// not used, so it doesn't need to be serialized. - unsigned HasBraces : 1; - /// \brief The source location for the extern keyword. - SourceLocation ExternLoc; - /// \brief The source location for the right brace (if valid). - SourceLocation RBraceLoc; - - LinkageSpecDecl(DeclContext *DC, SourceLocation ExternLoc, - SourceLocation LangLoc, LanguageIDs lang, bool HasBraces) - : Decl(LinkageSpec, DC, LangLoc), DeclContext(LinkageSpec), - Language(lang), HasBraces(HasBraces), ExternLoc(ExternLoc), - RBraceLoc(SourceLocation()) { } - -public: - static LinkageSpecDecl *Create(ASTContext &C, DeclContext *DC, - SourceLocation ExternLoc, - SourceLocation LangLoc, LanguageIDs Lang, - bool HasBraces); - static LinkageSpecDecl *CreateDeserialized(ASTContext &C, unsigned ID); - - /// \brief Return the language specified by this linkage specification. - LanguageIDs getLanguage() const { return LanguageIDs(Language); } - /// \brief Set the language specified by this linkage specification. - void setLanguage(LanguageIDs L) { Language = L; } - - /// \brief Determines whether this linkage specification had braces in - /// its syntactic form. - bool hasBraces() const { - assert(!RBraceLoc.isValid() || HasBraces); - return HasBraces; - } - - SourceLocation getExternLoc() const { return ExternLoc; } - SourceLocation getRBraceLoc() const { return RBraceLoc; } - void setExternLoc(SourceLocation L) { ExternLoc = L; } - void setRBraceLoc(SourceLocation L) { - RBraceLoc = L; - HasBraces = RBraceLoc.isValid(); - } - - SourceLocation getLocEnd() const LLVM_READONLY { - if (hasBraces()) - return getRBraceLoc(); - // No braces: get the end location of the (only) declaration in context - // (if present). - return decls_empty() ? getLocation() : decls_begin()->getLocEnd(); - } - - SourceRange getSourceRange() const override LLVM_READONLY { - return SourceRange(ExternLoc, getLocEnd()); - } - - static bool classof(const Decl *D) { return classofKind(D->getKind()); } - static bool classofKind(Kind K) { return K == LinkageSpec; } - static DeclContext *castToDeclContext(const LinkageSpecDecl *D) { - return static_cast<DeclContext *>(const_cast<LinkageSpecDecl*>(D)); - } - static LinkageSpecDecl *castFromDeclContext(const DeclContext *DC) { - return static_cast<LinkageSpecDecl *>(const_cast<DeclContext*>(DC)); - } -}; - -/// \brief Represents C++ using-directive. -/// -/// For example: -/// \code -/// using namespace std; -/// \endcode -/// -/// \note UsingDirectiveDecl should be Decl not NamedDecl, but we provide -/// artificial names for all using-directives in order to store -/// them in DeclContext effectively. -class UsingDirectiveDecl : public NamedDecl { - void anchor() override; - /// \brief The location of the \c using keyword. - SourceLocation UsingLoc; - - /// \brief The location of the \c namespace keyword. - SourceLocation NamespaceLoc; - - /// \brief The nested-name-specifier that precedes the namespace. - NestedNameSpecifierLoc QualifierLoc; - - /// \brief The namespace nominated by this using-directive. - NamedDecl *NominatedNamespace; - - /// Enclosing context containing both using-directive and nominated - /// namespace. - DeclContext *CommonAncestor; - - /// \brief Returns special DeclarationName used by using-directives. - /// - /// This is only used by DeclContext for storing UsingDirectiveDecls in - /// its lookup structure. - static DeclarationName getName() { - return DeclarationName::getUsingDirectiveName(); - } - - UsingDirectiveDecl(DeclContext *DC, SourceLocation UsingLoc, - SourceLocation NamespcLoc, - NestedNameSpecifierLoc QualifierLoc, - SourceLocation IdentLoc, - NamedDecl *Nominated, - DeclContext *CommonAncestor) - : NamedDecl(UsingDirective, DC, IdentLoc, getName()), UsingLoc(UsingLoc), - NamespaceLoc(NamespcLoc), QualifierLoc(QualifierLoc), - NominatedNamespace(Nominated), CommonAncestor(CommonAncestor) { } - -public: - /// \brief Retrieve the nested-name-specifier that qualifies the - /// name of the namespace, with source-location information. - NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } - - /// \brief Retrieve the nested-name-specifier that qualifies the - /// name of the namespace. - NestedNameSpecifier *getQualifier() const { - return QualifierLoc.getNestedNameSpecifier(); - } - - NamedDecl *getNominatedNamespaceAsWritten() { return NominatedNamespace; } - const NamedDecl *getNominatedNamespaceAsWritten() const { - return NominatedNamespace; - } - - /// \brief Returns the namespace nominated by this using-directive. - NamespaceDecl *getNominatedNamespace(); - - const NamespaceDecl *getNominatedNamespace() const { - return const_cast<UsingDirectiveDecl*>(this)->getNominatedNamespace(); - } - - /// \brief Returns the common ancestor context of this using-directive and - /// its nominated namespace. - DeclContext *getCommonAncestor() { return CommonAncestor; } - const DeclContext *getCommonAncestor() const { return CommonAncestor; } - - /// \brief Return the location of the \c using keyword. - SourceLocation getUsingLoc() const { return UsingLoc; } - - // FIXME: Could omit 'Key' in name. - /// \brief Returns the location of the \c namespace keyword. - SourceLocation getNamespaceKeyLocation() const { return NamespaceLoc; } - - /// \brief Returns the location of this using declaration's identifier. - SourceLocation getIdentLocation() const { return getLocation(); } - - static UsingDirectiveDecl *Create(ASTContext &C, DeclContext *DC, - SourceLocation UsingLoc, - SourceLocation NamespaceLoc, - NestedNameSpecifierLoc QualifierLoc, - SourceLocation IdentLoc, - NamedDecl *Nominated, - DeclContext *CommonAncestor); - static UsingDirectiveDecl *CreateDeserialized(ASTContext &C, unsigned ID); - - SourceRange getSourceRange() const override LLVM_READONLY { - return SourceRange(UsingLoc, getLocation()); - } - - static bool classof(const Decl *D) { return classofKind(D->getKind()); } - static bool classofKind(Kind K) { return K == UsingDirective; } - - // Friend for getUsingDirectiveName. - friend class DeclContext; - - friend class ASTDeclReader; -}; - -/// \brief Represents a C++ namespace alias. -/// -/// For example: -/// -/// \code -/// namespace Foo = Bar; -/// \endcode -class NamespaceAliasDecl : public NamedDecl, - public Redeclarable<NamespaceAliasDecl> { - void anchor() override; - - /// \brief The location of the \c namespace keyword. - SourceLocation NamespaceLoc; - - /// \brief The location of the namespace's identifier. - /// - /// This is accessed by TargetNameLoc. - SourceLocation IdentLoc; - - /// \brief The nested-name-specifier that precedes the namespace. - NestedNameSpecifierLoc QualifierLoc; - - /// \brief The Decl that this alias points to, either a NamespaceDecl or - /// a NamespaceAliasDecl. - NamedDecl *Namespace; - - NamespaceAliasDecl(ASTContext &C, DeclContext *DC, - SourceLocation NamespaceLoc, SourceLocation AliasLoc, - IdentifierInfo *Alias, NestedNameSpecifierLoc QualifierLoc, - SourceLocation IdentLoc, NamedDecl *Namespace) - : NamedDecl(NamespaceAlias, DC, AliasLoc, Alias), redeclarable_base(C), - NamespaceLoc(NamespaceLoc), IdentLoc(IdentLoc), - QualifierLoc(QualifierLoc), Namespace(Namespace) {} - - typedef Redeclarable<NamespaceAliasDecl> redeclarable_base; - NamespaceAliasDecl *getNextRedeclarationImpl() override; - NamespaceAliasDecl *getPreviousDeclImpl() override; - NamespaceAliasDecl *getMostRecentDeclImpl() override; - - friend class ASTDeclReader; - -public: - static NamespaceAliasDecl *Create(ASTContext &C, DeclContext *DC, - SourceLocation NamespaceLoc, - SourceLocation AliasLoc, - IdentifierInfo *Alias, - NestedNameSpecifierLoc QualifierLoc, - SourceLocation IdentLoc, - NamedDecl *Namespace); - - static NamespaceAliasDecl *CreateDeserialized(ASTContext &C, unsigned ID); - - typedef redeclarable_base::redecl_range redecl_range; - typedef redeclarable_base::redecl_iterator redecl_iterator; - using redeclarable_base::redecls_begin; - using redeclarable_base::redecls_end; - using redeclarable_base::redecls; - using redeclarable_base::getPreviousDecl; - using redeclarable_base::getMostRecentDecl; - - NamespaceAliasDecl *getCanonicalDecl() override { - return getFirstDecl(); - } - const NamespaceAliasDecl *getCanonicalDecl() const { - return getFirstDecl(); - } - - /// \brief Retrieve the nested-name-specifier that qualifies the - /// name of the namespace, with source-location information. - NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } - - /// \brief Retrieve the nested-name-specifier that qualifies the - /// name of the namespace. - NestedNameSpecifier *getQualifier() const { - return QualifierLoc.getNestedNameSpecifier(); - } - - /// \brief Retrieve the namespace declaration aliased by this directive. - NamespaceDecl *getNamespace() { - if (NamespaceAliasDecl *AD = dyn_cast<NamespaceAliasDecl>(Namespace)) - return AD->getNamespace(); - - return cast<NamespaceDecl>(Namespace); - } - - const NamespaceDecl *getNamespace() const { - return const_cast<NamespaceAliasDecl*>(this)->getNamespace(); - } - - /// Returns the location of the alias name, i.e. 'foo' in - /// "namespace foo = ns::bar;". - SourceLocation getAliasLoc() const { return getLocation(); } - - /// Returns the location of the \c namespace keyword. - SourceLocation getNamespaceLoc() const { return NamespaceLoc; } - - /// Returns the location of the identifier in the named namespace. - SourceLocation getTargetNameLoc() const { return IdentLoc; } - - /// \brief Retrieve the namespace that this alias refers to, which - /// may either be a NamespaceDecl or a NamespaceAliasDecl. - NamedDecl *getAliasedNamespace() const { return Namespace; } - - SourceRange getSourceRange() const override LLVM_READONLY { - return SourceRange(NamespaceLoc, IdentLoc); - } - - static bool classof(const Decl *D) { return classofKind(D->getKind()); } - static bool classofKind(Kind K) { return K == NamespaceAlias; } -}; - -/// \brief Represents a shadow declaration introduced into a scope by a -/// (resolved) using declaration. -/// -/// For example, -/// \code -/// namespace A { -/// void foo(); -/// } -/// namespace B { -/// using A::foo; // <- a UsingDecl -/// // Also creates a UsingShadowDecl for A::foo() in B -/// } -/// \endcode -class UsingShadowDecl : public NamedDecl, public Redeclarable<UsingShadowDecl> { - void anchor() override; - - /// The referenced declaration. - NamedDecl *Underlying; - - /// \brief The using declaration which introduced this decl or the next using - /// shadow declaration contained in the aforementioned using declaration. - NamedDecl *UsingOrNextShadow; - friend class UsingDecl; - - UsingShadowDecl(ASTContext &C, DeclContext *DC, SourceLocation Loc, - UsingDecl *Using, NamedDecl *Target) - : NamedDecl(UsingShadow, DC, Loc, DeclarationName()), - redeclarable_base(C), Underlying(Target), - UsingOrNextShadow(reinterpret_cast<NamedDecl *>(Using)) { - if (Target) { - setDeclName(Target->getDeclName()); - IdentifierNamespace = Target->getIdentifierNamespace(); - } - setImplicit(); - } - - typedef Redeclarable<UsingShadowDecl> redeclarable_base; - UsingShadowDecl *getNextRedeclarationImpl() override { - return getNextRedeclaration(); - } - UsingShadowDecl *getPreviousDeclImpl() override { - return getPreviousDecl(); - } - UsingShadowDecl *getMostRecentDeclImpl() override { - return getMostRecentDecl(); - } - -public: - static UsingShadowDecl *Create(ASTContext &C, DeclContext *DC, - SourceLocation Loc, UsingDecl *Using, - NamedDecl *Target) { - return new (C, DC) UsingShadowDecl(C, DC, Loc, Using, Target); - } - - static UsingShadowDecl *CreateDeserialized(ASTContext &C, unsigned ID); - - typedef redeclarable_base::redecl_range redecl_range; - typedef redeclarable_base::redecl_iterator redecl_iterator; - using redeclarable_base::redecls_begin; - using redeclarable_base::redecls_end; - using redeclarable_base::redecls; - using redeclarable_base::getPreviousDecl; - using redeclarable_base::getMostRecentDecl; - - UsingShadowDecl *getCanonicalDecl() override { - return getFirstDecl(); - } - const UsingShadowDecl *getCanonicalDecl() const { - return getFirstDecl(); - } - - /// \brief Gets the underlying declaration which has been brought into the - /// local scope. - NamedDecl *getTargetDecl() const { return Underlying; } - - /// \brief Sets the underlying declaration which has been brought into the - /// local scope. - void setTargetDecl(NamedDecl* ND) { - assert(ND && "Target decl is null!"); - Underlying = ND; - IdentifierNamespace = ND->getIdentifierNamespace(); - } - - /// \brief Gets the using declaration to which this declaration is tied. - UsingDecl *getUsingDecl() const; - - /// \brief The next using shadow declaration contained in the shadow decl - /// chain of the using declaration which introduced this decl. - UsingShadowDecl *getNextUsingShadowDecl() const { - return dyn_cast_or_null<UsingShadowDecl>(UsingOrNextShadow); - } - - static bool classof(const Decl *D) { return classofKind(D->getKind()); } - static bool classofKind(Kind K) { return K == Decl::UsingShadow; } - - friend class ASTDeclReader; - friend class ASTDeclWriter; -}; - -/// \brief Represents a C++ using-declaration. -/// -/// For example: -/// \code -/// using someNameSpace::someIdentifier; -/// \endcode -class UsingDecl : public NamedDecl, public Mergeable<UsingDecl> { - void anchor() override; - - /// \brief The source location of the 'using' keyword itself. - SourceLocation UsingLocation; - - /// \brief The nested-name-specifier that precedes the name. - NestedNameSpecifierLoc QualifierLoc; - - /// \brief Provides source/type location info for the declaration name - /// embedded in the ValueDecl base class. - DeclarationNameLoc DNLoc; - - /// \brief The first shadow declaration of the shadow decl chain associated - /// with this using declaration. - /// - /// The bool member of the pair store whether this decl has the \c typename - /// keyword. - llvm::PointerIntPair<UsingShadowDecl *, 1, bool> FirstUsingShadow; - - UsingDecl(DeclContext *DC, SourceLocation UL, - NestedNameSpecifierLoc QualifierLoc, - const DeclarationNameInfo &NameInfo, bool HasTypenameKeyword) - : NamedDecl(Using, DC, NameInfo.getLoc(), NameInfo.getName()), - UsingLocation(UL), QualifierLoc(QualifierLoc), - DNLoc(NameInfo.getInfo()), FirstUsingShadow(nullptr, HasTypenameKeyword) { - } - -public: - /// \brief Return the source location of the 'using' keyword. - SourceLocation getUsingLoc() const { return UsingLocation; } - - /// \brief Set the source location of the 'using' keyword. - void setUsingLoc(SourceLocation L) { UsingLocation = L; } - - /// \brief Retrieve the nested-name-specifier that qualifies the name, - /// with source-location information. - NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } - - /// \brief Retrieve the nested-name-specifier that qualifies the name. - NestedNameSpecifier *getQualifier() const { - return QualifierLoc.getNestedNameSpecifier(); - } - - DeclarationNameInfo getNameInfo() const { - return DeclarationNameInfo(getDeclName(), getLocation(), DNLoc); - } - - /// \brief Return true if it is a C++03 access declaration (no 'using'). - bool isAccessDeclaration() const { return UsingLocation.isInvalid(); } - - /// \brief Return true if the using declaration has 'typename'. - bool hasTypename() const { return FirstUsingShadow.getInt(); } - - /// \brief Sets whether the using declaration has 'typename'. - void setTypename(bool TN) { FirstUsingShadow.setInt(TN); } - - /// \brief Iterates through the using shadow declarations associated with - /// this using declaration. - class shadow_iterator { - /// \brief The current using shadow declaration. - UsingShadowDecl *Current; - - public: - typedef UsingShadowDecl* value_type; - typedef UsingShadowDecl* reference; - typedef UsingShadowDecl* pointer; - typedef std::forward_iterator_tag iterator_category; - typedef std::ptrdiff_t difference_type; - - shadow_iterator() : Current(nullptr) { } - explicit shadow_iterator(UsingShadowDecl *C) : Current(C) { } - - reference operator*() const { return Current; } - pointer operator->() const { return Current; } - - shadow_iterator& operator++() { - Current = Current->getNextUsingShadowDecl(); - return *this; - } - - shadow_iterator operator++(int) { - shadow_iterator tmp(*this); - ++(*this); - return tmp; - } - - friend bool operator==(shadow_iterator x, shadow_iterator y) { - return x.Current == y.Current; - } - friend bool operator!=(shadow_iterator x, shadow_iterator y) { - return x.Current != y.Current; - } - }; - - typedef llvm::iterator_range<shadow_iterator> shadow_range; - - shadow_range shadows() const { - return shadow_range(shadow_begin(), shadow_end()); - } - shadow_iterator shadow_begin() const { - return shadow_iterator(FirstUsingShadow.getPointer()); - } - shadow_iterator shadow_end() const { return shadow_iterator(); } - - /// \brief Return the number of shadowed declarations associated with this - /// using declaration. - unsigned shadow_size() const { - return std::distance(shadow_begin(), shadow_end()); - } - - void addShadowDecl(UsingShadowDecl *S); - void removeShadowDecl(UsingShadowDecl *S); - - static UsingDecl *Create(ASTContext &C, DeclContext *DC, - SourceLocation UsingL, - NestedNameSpecifierLoc QualifierLoc, - const DeclarationNameInfo &NameInfo, - bool HasTypenameKeyword); - - static UsingDecl *CreateDeserialized(ASTContext &C, unsigned ID); - - SourceRange getSourceRange() const override LLVM_READONLY; - - /// Retrieves the canonical declaration of this declaration. - UsingDecl *getCanonicalDecl() override { return getFirstDecl(); } - const UsingDecl *getCanonicalDecl() const { return getFirstDecl(); } - - static bool classof(const Decl *D) { return classofKind(D->getKind()); } - static bool classofKind(Kind K) { return K == Using; } - - friend class ASTDeclReader; - friend class ASTDeclWriter; -}; - -/// \brief Represents a dependent using declaration which was not marked with -/// \c typename. -/// -/// Unlike non-dependent using declarations, these *only* bring through -/// non-types; otherwise they would break two-phase lookup. -/// -/// \code -/// template \<class T> class A : public Base<T> { -/// using Base<T>::foo; -/// }; -/// \endcode -class UnresolvedUsingValueDecl : public ValueDecl, - public Mergeable<UnresolvedUsingValueDecl> { - void anchor() override; - - /// \brief The source location of the 'using' keyword - SourceLocation UsingLocation; - - /// \brief The nested-name-specifier that precedes the name. - NestedNameSpecifierLoc QualifierLoc; - - /// \brief Provides source/type location info for the declaration name - /// embedded in the ValueDecl base class. - DeclarationNameLoc DNLoc; - - UnresolvedUsingValueDecl(DeclContext *DC, QualType Ty, - SourceLocation UsingLoc, - NestedNameSpecifierLoc QualifierLoc, - const DeclarationNameInfo &NameInfo) - : ValueDecl(UnresolvedUsingValue, DC, - NameInfo.getLoc(), NameInfo.getName(), Ty), - UsingLocation(UsingLoc), QualifierLoc(QualifierLoc), - DNLoc(NameInfo.getInfo()) - { } - -public: - /// \brief Returns the source location of the 'using' keyword. - SourceLocation getUsingLoc() const { return UsingLocation; } - - /// \brief Set the source location of the 'using' keyword. - void setUsingLoc(SourceLocation L) { UsingLocation = L; } - - /// \brief Return true if it is a C++03 access declaration (no 'using'). - bool isAccessDeclaration() const { return UsingLocation.isInvalid(); } - - /// \brief Retrieve the nested-name-specifier that qualifies the name, - /// with source-location information. - NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } - - /// \brief Retrieve the nested-name-specifier that qualifies the name. - NestedNameSpecifier *getQualifier() const { - return QualifierLoc.getNestedNameSpecifier(); - } - - DeclarationNameInfo getNameInfo() const { - return DeclarationNameInfo(getDeclName(), getLocation(), DNLoc); - } - - static UnresolvedUsingValueDecl * - Create(ASTContext &C, DeclContext *DC, SourceLocation UsingLoc, - NestedNameSpecifierLoc QualifierLoc, - const DeclarationNameInfo &NameInfo); - - static UnresolvedUsingValueDecl * - CreateDeserialized(ASTContext &C, unsigned ID); - - SourceRange getSourceRange() const override LLVM_READONLY; - - /// Retrieves the canonical declaration of this declaration. - UnresolvedUsingValueDecl *getCanonicalDecl() override { - return getFirstDecl(); - } - const UnresolvedUsingValueDecl *getCanonicalDecl() const { - return getFirstDecl(); - } - - static bool classof(const Decl *D) { return classofKind(D->getKind()); } - static bool classofKind(Kind K) { return K == UnresolvedUsingValue; } - - friend class ASTDeclReader; - friend class ASTDeclWriter; -}; - -/// \brief Represents a dependent using declaration which was marked with -/// \c typename. -/// -/// \code -/// template \<class T> class A : public Base<T> { -/// using typename Base<T>::foo; -/// }; -/// \endcode -/// -/// The type associated with an unresolved using typename decl is -/// currently always a typename type. -class UnresolvedUsingTypenameDecl - : public TypeDecl, - public Mergeable<UnresolvedUsingTypenameDecl> { - void anchor() override; - - /// \brief The source location of the 'typename' keyword - SourceLocation TypenameLocation; - - /// \brief The nested-name-specifier that precedes the name. - NestedNameSpecifierLoc QualifierLoc; - - UnresolvedUsingTypenameDecl(DeclContext *DC, SourceLocation UsingLoc, - SourceLocation TypenameLoc, - NestedNameSpecifierLoc QualifierLoc, - SourceLocation TargetNameLoc, - IdentifierInfo *TargetName) - : TypeDecl(UnresolvedUsingTypename, DC, TargetNameLoc, TargetName, - UsingLoc), - TypenameLocation(TypenameLoc), QualifierLoc(QualifierLoc) { } - - friend class ASTDeclReader; - -public: - /// \brief Returns the source location of the 'using' keyword. - SourceLocation getUsingLoc() const { return getLocStart(); } - - /// \brief Returns the source location of the 'typename' keyword. - SourceLocation getTypenameLoc() const { return TypenameLocation; } - - /// \brief Retrieve the nested-name-specifier that qualifies the name, - /// with source-location information. - NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } - - /// \brief Retrieve the nested-name-specifier that qualifies the name. - NestedNameSpecifier *getQualifier() const { - return QualifierLoc.getNestedNameSpecifier(); - } - - static UnresolvedUsingTypenameDecl * - Create(ASTContext &C, DeclContext *DC, SourceLocation UsingLoc, - SourceLocation TypenameLoc, NestedNameSpecifierLoc QualifierLoc, - SourceLocation TargetNameLoc, DeclarationName TargetName); - - static UnresolvedUsingTypenameDecl * - CreateDeserialized(ASTContext &C, unsigned ID); - - /// Retrieves the canonical declaration of this declaration. - UnresolvedUsingTypenameDecl *getCanonicalDecl() override { - return getFirstDecl(); - } - const UnresolvedUsingTypenameDecl *getCanonicalDecl() const { - return getFirstDecl(); - } - - static bool classof(const Decl *D) { return classofKind(D->getKind()); } - static bool classofKind(Kind K) { return K == UnresolvedUsingTypename; } -}; - -/// \brief Represents a C++11 static_assert declaration. -class StaticAssertDecl : public Decl { - virtual void anchor(); - llvm::PointerIntPair<Expr *, 1, bool> AssertExprAndFailed; - StringLiteral *Message; - SourceLocation RParenLoc; - - StaticAssertDecl(DeclContext *DC, SourceLocation StaticAssertLoc, - Expr *AssertExpr, StringLiteral *Message, - SourceLocation RParenLoc, bool Failed) - : Decl(StaticAssert, DC, StaticAssertLoc), - AssertExprAndFailed(AssertExpr, Failed), Message(Message), - RParenLoc(RParenLoc) { } - -public: - static StaticAssertDecl *Create(ASTContext &C, DeclContext *DC, - SourceLocation StaticAssertLoc, - Expr *AssertExpr, StringLiteral *Message, - SourceLocation RParenLoc, bool Failed); - static StaticAssertDecl *CreateDeserialized(ASTContext &C, unsigned ID); - - Expr *getAssertExpr() { return AssertExprAndFailed.getPointer(); } - const Expr *getAssertExpr() const { return AssertExprAndFailed.getPointer(); } - - StringLiteral *getMessage() { return Message; } - const StringLiteral *getMessage() const { return Message; } - - bool isFailed() const { return AssertExprAndFailed.getInt(); } - - SourceLocation getRParenLoc() const { return RParenLoc; } - - SourceRange getSourceRange() const override LLVM_READONLY { - return SourceRange(getLocation(), getRParenLoc()); - } - - static bool classof(const Decl *D) { return classofKind(D->getKind()); } - static bool classofKind(Kind K) { return K == StaticAssert; } - - friend class ASTDeclReader; -}; - -/// An instance of this class represents the declaration of a property -/// member. This is a Microsoft extension to C++, first introduced in -/// Visual Studio .NET 2003 as a parallel to similar features in C# -/// and Managed C++. -/// -/// A property must always be a non-static class member. -/// -/// A property member superficially resembles a non-static data -/// member, except preceded by a property attribute: -/// __declspec(property(get=GetX, put=PutX)) int x; -/// Either (but not both) of the 'get' and 'put' names may be omitted. -/// -/// A reference to a property is always an lvalue. If the lvalue -/// undergoes lvalue-to-rvalue conversion, then a getter name is -/// required, and that member is called with no arguments. -/// If the lvalue is assigned into, then a setter name is required, -/// and that member is called with one argument, the value assigned. -/// Both operations are potentially overloaded. Compound assignments -/// are permitted, as are the increment and decrement operators. -/// -/// The getter and putter methods are permitted to be overloaded, -/// although their return and parameter types are subject to certain -/// restrictions according to the type of the property. -/// -/// A property declared using an incomplete array type may -/// additionally be subscripted, adding extra parameters to the getter -/// and putter methods. -class MSPropertyDecl : public DeclaratorDecl { - IdentifierInfo *GetterId, *SetterId; - - MSPropertyDecl(DeclContext *DC, SourceLocation L, DeclarationName N, - QualType T, TypeSourceInfo *TInfo, SourceLocation StartL, - IdentifierInfo *Getter, IdentifierInfo *Setter) - : DeclaratorDecl(MSProperty, DC, L, N, T, TInfo, StartL), - GetterId(Getter), SetterId(Setter) {} - -public: - static MSPropertyDecl *Create(ASTContext &C, DeclContext *DC, - SourceLocation L, DeclarationName N, QualType T, - TypeSourceInfo *TInfo, SourceLocation StartL, - IdentifierInfo *Getter, IdentifierInfo *Setter); - static MSPropertyDecl *CreateDeserialized(ASTContext &C, unsigned ID); - - static bool classof(const Decl *D) { return D->getKind() == MSProperty; } - - bool hasGetter() const { return GetterId != nullptr; } - IdentifierInfo* getGetterId() const { return GetterId; } - bool hasSetter() const { return SetterId != nullptr; } - IdentifierInfo* getSetterId() const { return SetterId; } - - friend class ASTDeclReader; -}; - -/// Insertion operator for diagnostics. This allows sending an AccessSpecifier -/// into a diagnostic with <<. -const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, - AccessSpecifier AS); - -const PartialDiagnostic &operator<<(const PartialDiagnostic &DB, - AccessSpecifier AS); - -} // end namespace clang - -#endif |
