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Diffstat (limited to 'clang/include/clang/AST/DeclCXX.h')
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diff --git a/clang/include/clang/AST/DeclCXX.h b/clang/include/clang/AST/DeclCXX.h new file mode 100644 index 0000000..7f3ec4c --- /dev/null +++ b/clang/include/clang/AST/DeclCXX.h @@ -0,0 +1,2938 @@ +//===-- 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. +// +//===----------------------------------------------------------------------===// +// +// This file defines the C++ Decl subclasses, other than those for +// templates (in DeclTemplate.h) and friends (in DeclFriend.h). +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_CLANG_AST_DECLCXX_H +#define LLVM_CLANG_AST_DECLCXX_H + +#include "clang/AST/Expr.h" +#include "clang/AST/ExprCXX.h" +#include "clang/AST/Decl.h" +#include "clang/AST/TypeLoc.h" +#include "clang/AST/UnresolvedSet.h" +#include "llvm/ADT/DenseMap.h" +#include "llvm/ADT/PointerIntPair.h" +#include "llvm/ADT/SmallPtrSet.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; + +/// \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 { + /// Implement simplify_type for AnyFunctionDecl, so that we can dyn_cast from + /// AnyFunctionDecl to any function or function template declaration. + template<> struct simplify_type<const ::clang::AnyFunctionDecl> { + typedef ::clang::NamedDecl* SimpleType; + static SimpleType getSimplifiedValue(const ::clang::AnyFunctionDecl &Val) { + return Val; + } + }; + template<> struct simplify_type< ::clang::AnyFunctionDecl> + : public simplify_type<const ::clang::AnyFunctionDecl> {}; + + // 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 { + +/// AccessSpecDecl - 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(); + /// ColonLoc - 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: + /// getAccessSpecifierLoc - The location of the access specifier. + SourceLocation getAccessSpecifierLoc() const { return getLocation(); } + /// setAccessSpecifierLoc - Sets the location of the access specifier. + void setAccessSpecifierLoc(SourceLocation ASLoc) { setLocation(ASLoc); } + + /// getColonLoc - The location of the colon following the access specifier. + SourceLocation getColonLoc() const { return ColonLoc; } + /// setColonLoc - Sets the location of the colon. + void setColonLoc(SourceLocation CLoc) { ColonLoc = CLoc; } + + SourceRange getSourceRange() const LLVM_READONLY { + return SourceRange(getAccessSpecifierLoc(), getColonLoc()); + } + + static AccessSpecDecl *Create(ASTContext &C, AccessSpecifier AS, + DeclContext *DC, SourceLocation ASLoc, + SourceLocation ColonLoc) { + return new (C) 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 classof(const AccessSpecDecl *D) { return true; } + static bool classofKind(Kind K) { return K == AccessSpec; } +}; + + +/// CXXBaseSpecifier - 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 { + /// Range - 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; + + /// Virtual - Whether this is a virtual base class or not. + bool Virtual : 1; + + /// BaseOfClass - 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; + + /// Access - Access specifier as written in the source code (which + /// 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; + + /// InheritConstructors - Whether the class contains a using declaration + /// to inherit the named class's constructors. + bool InheritConstructors : 1; + + /// BaseTypeInfo - 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 + /// "virtual" or 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) { } + + /// getSourceRange - 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(); } + + /// isVirtual - 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; + } + + /// getAccessSpecifier - 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; + } + + /// getAccessSpecifierAsWritten - 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; + } + + /// getType - Retrieves the type of the base class. This type will + /// always be an unqualified class type. + QualType getType() const { return BaseTypeInfo->getType(); } + + /// getTypeLoc - Retrieves the type and source location of the base class. + TypeSourceInfo *getTypeSourceInfo() const { return BaseTypeInfo; } +}; + +/// CXXRecordDecl - Represents a C++ struct/union/class. +/// FIXME: This class will disappear once we've properly taught RecordDecl +/// to deal with C++-specific things. +class CXXRecordDecl : public RecordDecl { + + friend void TagDecl::startDefinition(); + + struct DefinitionData { + DefinitionData(CXXRecordDecl *D); + + /// UserDeclaredConstructor - True when this class has a + /// user-declared constructor. + bool UserDeclaredConstructor : 1; + + /// UserDeclaredCopyConstructor - True when this class has a + /// user-declared copy constructor. + bool UserDeclaredCopyConstructor : 1; + + /// UserDeclareMoveConstructor - True when this class has a + /// user-declared move constructor. + bool UserDeclaredMoveConstructor : 1; + + /// UserDeclaredCopyAssignment - True when this class has a + /// user-declared copy assignment operator. + bool UserDeclaredCopyAssignment : 1; + + /// UserDeclareMoveAssignment - True when this class has a + /// user-declared move assignment. + bool UserDeclaredMoveAssignment : 1; + + /// UserDeclaredDestructor - True when this class has a + /// user-declared destructor. + bool UserDeclaredDestructor : 1; + + /// Aggregate - True when this class is an aggregate. + bool Aggregate : 1; + + /// PlainOldData - True when this class is a POD-type. + bool PlainOldData : 1; + + /// Empty - 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; + + /// Polymorphic - True when this class is polymorphic, i.e. has at + /// least one virtual member or derives from a polymorphic class. + bool Polymorphic : 1; + + /// Abstract - 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; + + /// IsStandardLayout - True when this class has standard layout. + /// + /// C++0x [class]p7. A standard-layout class is a class that: + /// * has no non-static data members of type non-standard-layout class (or + /// array of such types) 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; + + /// HasNoNonEmptyBases - 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; + + /// HasPrivateFields - True when there are private non-static data members. + bool HasPrivateFields : 1; + + /// HasProtectedFields - True when there are protected non-static data + /// members. + bool HasProtectedFields : 1; + + /// HasPublicFields - 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 there no non-field members declared by the user. + bool HasOnlyCMembers : 1; + + /// HasTrivialDefaultConstructor - True when, if this class has a default + /// constructor, this default constructor is trivial. + /// + /// C++0x [class.ctor]p5 + /// A default constructor is trivial if it is not user-provided and if + /// -- its class has no virtual functions and no virtual base classes, + /// and + /// -- no non-static data member of its class has a + /// brace-or-equal-initializer, and + /// -- all the direct base classes of its class have trivial + /// default constructors, and + /// -- for all the nonstatic data members of its class that are of class + /// type (or array thereof), each such class has a trivial + /// default constructor. + bool HasTrivialDefaultConstructor : 1; + + /// HasConstexprNonCopyMoveConstructor - True when this class has at least + /// one user-declared constexpr constructor which is neither the copy nor + /// move constructor. + bool HasConstexprNonCopyMoveConstructor : 1; + + /// DefaultedDefaultConstructorIsConstexpr - True if a defaulted default + /// constructor for this class would be constexpr. + bool DefaultedDefaultConstructorIsConstexpr : 1; + + /// DefaultedCopyConstructorIsConstexpr - True if a defaulted copy + /// constructor for this class would be constexpr. + bool DefaultedCopyConstructorIsConstexpr : 1; + + /// DefaultedMoveConstructorIsConstexpr - True if a defaulted move + /// constructor for this class would be constexpr. + bool DefaultedMoveConstructorIsConstexpr : 1; + + /// HasConstexprDefaultConstructor - True if this class has a constexpr + /// default constructor (either user-declared or implicitly declared). + bool HasConstexprDefaultConstructor : 1; + + /// HasConstexprCopyConstructor - True if this class has a constexpr copy + /// constructor (either user-declared or implicitly declared). + bool HasConstexprCopyConstructor : 1; + + /// HasConstexprMoveConstructor - True if this class has a constexpr move + /// constructor (either user-declared or implicitly declared). + bool HasConstexprMoveConstructor : 1; + + /// HasTrivialCopyConstructor - True when this class has a trivial copy + /// constructor. + /// + /// C++0x [class.copy]p13: + /// A copy/move constructor for class X is trivial if it is neither + /// user-provided and if + /// -- class X has no virtual functions and no virtual base classes, and + /// -- the constructor selected to copy/move each direct base class + /// subobject is trivial, and + /// -- for each non-static data member of X that is of class type (or an + /// array thereof), the constructor selected to copy/move that member + /// is trivial; + /// otherwise the copy/move constructor is non-trivial. + bool HasTrivialCopyConstructor : 1; + + /// HasTrivialMoveConstructor - True when this class has a trivial move + /// constructor. + /// + /// C++0x [class.copy]p13: + /// A copy/move constructor for class X is trivial if it is neither + /// user-provided and if + /// -- class X has no virtual functions and no virtual base classes, and + /// -- the constructor selected to copy/move each direct base class + /// subobject is trivial, and + /// -- for each non-static data member of X that is of class type (or an + /// array thereof), the constructor selected to copy/move that member + /// is trivial; + /// otherwise the copy/move constructor is non-trivial. + bool HasTrivialMoveConstructor : 1; + + /// HasTrivialCopyAssignment - True when this class has a trivial copy + /// assignment operator. + /// + /// C++0x [class.copy]p27: + /// A copy/move assignment operator for class X is trivial if it is + /// neither user-provided nor deleted and if + /// -- class X has no virtual functions and no virtual base classes, and + /// -- the assignment operator selected to copy/move each direct base + /// class subobject is trivial, and + /// -- for each non-static data member of X that is of class type (or an + /// array thereof), the assignment operator selected to copy/move + /// that member is trivial; + /// otherwise the copy/move assignment operator is non-trivial. + bool HasTrivialCopyAssignment : 1; + + /// HasTrivialMoveAssignment - True when this class has a trivial move + /// assignment operator. + /// + /// C++0x [class.copy]p27: + /// A copy/move assignment operator for class X is trivial if it is + /// neither user-provided nor deleted and if + /// -- class X has no virtual functions and no virtual base classes, and + /// -- the assignment operator selected to copy/move each direct base + /// class subobject is trivial, and + /// -- for each non-static data member of X that is of class type (or an + /// array thereof), the assignment operator selected to copy/move + /// that member is trivial; + /// otherwise the copy/move assignment operator is non-trivial. + bool HasTrivialMoveAssignment : 1; + + /// HasTrivialDestructor - True when this class has a trivial destructor. + /// + /// C++ [class.dtor]p3. A destructor is trivial if it is an + /// implicitly-declared destructor and if: + /// * all of the direct base classes of its class have trivial destructors + /// and + /// * for all of the non-static data members of its class that are of class + /// type (or array thereof), each such class has a trivial destructor. + bool HasTrivialDestructor : 1; + + /// HasIrrelevantDestructor - True when this class has a destructor with no + /// semantic effect. + bool HasIrrelevantDestructor : 1; + + /// HasNonLiteralTypeFieldsOrBases - True when this class contains at least + /// one non-static data member or base class of non-literal or volatile + /// type. + bool HasNonLiteralTypeFieldsOrBases : 1; + + /// ComputedVisibleConversions - True when visible conversion functions are + /// already computed and are available. + bool ComputedVisibleConversions : 1; + + /// \brief Whether we have a C++0x user-provided default constructor (not + /// explicitly deleted or defaulted). + bool UserProvidedDefaultConstructor : 1; + + /// \brief Whether we have already declared the default constructor. + bool DeclaredDefaultConstructor : 1; + + /// \brief Whether we have already declared the copy constructor. + bool DeclaredCopyConstructor : 1; + + /// \brief Whether we have already declared the move constructor. + bool DeclaredMoveConstructor : 1; + + /// \brief Whether we have already declared the copy-assignment operator. + bool DeclaredCopyAssignment : 1; + + /// \brief Whether we have already declared the move-assignment operator. + bool DeclaredMoveAssignment : 1; + + /// \brief Whether we have already declared a destructor within the class. + bool DeclaredDestructor : 1; + + /// \brief Whether an implicit move constructor was attempted to be declared + /// but would have been deleted. + bool FailedImplicitMoveConstructor : 1; + + /// \brief Whether an implicit move assignment operator was attempted to be + /// declared but would have been deleted. + bool FailedImplicitMoveAssignment : 1; + + /// \brief Whether this class describes a C++ lambda. + bool IsLambda : 1; + + /// NumBases - The number of base class specifiers in Bases. + unsigned NumBases; + + /// NumVBases - The number of virtual base class specifiers in VBases. + unsigned NumVBases; + + /// Bases - Base classes of this class. + /// FIXME: This is wasted space for a union. + LazyCXXBaseSpecifiersPtr Bases; + + /// VBases - direct and indirect virtual base classes of this class. + LazyCXXBaseSpecifiersPtr VBases; + + /// Conversions - Overload set containing the conversion functions + /// of this C++ class (but not its inherited conversion + /// functions). Each of the entries in this overload set is a + /// CXXConversionDecl. + UnresolvedSet<4> Conversions; + + /// VisibleConversions - Overload set containing 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. + UnresolvedSet<4> VisibleConversions; + + /// Definition - The declaration which defines this record. + CXXRecordDecl *Definition; + + /// FirstFriend - The first friend declaration in this class, or + /// null if there aren't any. This is actually currently stored + /// in reverse order. + FriendDecl *FirstFriend; + + /// \brief Retrieve the set of direct base classes. + CXXBaseSpecifier *getBases() const { + return Bases.get(Definition->getASTContext().getExternalSource()); + } + + /// \brief Retrieve the set of virtual base classes. + CXXBaseSpecifier *getVBases() const { + return VBases.get(Definition->getASTContext().getExternalSource()); + } + } *DefinitionData; + + /// \brief Describes a C++ closure type (generated by a lambda expression). + struct LambdaDefinitionData : public DefinitionData { + typedef LambdaExpr::Capture Capture; + + LambdaDefinitionData(CXXRecordDecl *D, bool Dependent) + : DefinitionData(D), Dependent(Dependent), NumCaptures(0), + NumExplicitCaptures(0), ManglingNumber(0), ContextDecl(0), Captures(0) + { + IsLambda = 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 The number of captures in this lambda. + unsigned NumCaptures : 16; + + /// \brief The number of explicit captures in this lambda. + unsigned NumExplicitCaptures : 15; + + /// \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; + }; + + struct DefinitionData &data() { + assert(DefinitionData && "queried property of class with no definition"); + return *DefinitionData; + } + + const struct DefinitionData &data() const { + assert(DefinitionData && "queried property of class with no definition"); + return *DefinitionData; + } + + struct LambdaDefinitionData &getLambdaData() const { + assert(DefinitionData && "queried property of lambda with no definition"); + assert(DefinitionData->IsLambda && + "queried lambda property of non-lambda class"); + return static_cast<LambdaDefinitionData &>(*DefinitionData); + } + + /// \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 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; + +protected: + CXXRecordDecl(Kind K, TagKind TK, DeclContext *DC, + SourceLocation StartLoc, SourceLocation IdLoc, + IdentifierInfo *Id, CXXRecordDecl *PrevDecl); + +public: + /// base_class_iterator - Iterator that traverses the base classes + /// of a class. + typedef CXXBaseSpecifier* base_class_iterator; + + /// base_class_const_iterator - Iterator that traverses the base + /// classes of a class. + typedef const CXXBaseSpecifier* base_class_const_iterator; + + /// reverse_base_class_iterator = Iterator that traverses the base classes + /// of a class in reverse order. + typedef std::reverse_iterator<base_class_iterator> + reverse_base_class_iterator; + + /// reverse_base_class_iterator = Iterator that traverses the base classes + /// of a class in reverse order. + typedef std::reverse_iterator<base_class_const_iterator> + reverse_base_class_const_iterator; + + virtual CXXRecordDecl *getCanonicalDecl() { + return cast<CXXRecordDecl>(RecordDecl::getCanonicalDecl()); + } + virtual const CXXRecordDecl *getCanonicalDecl() const { + return cast<CXXRecordDecl>(RecordDecl::getCanonicalDecl()); + } + + const CXXRecordDecl *getPreviousDecl() const { + return cast_or_null<CXXRecordDecl>(RecordDecl::getPreviousDecl()); + } + CXXRecordDecl *getPreviousDecl() { + return cast_or_null<CXXRecordDecl>(RecordDecl::getPreviousDecl()); + } + + const CXXRecordDecl *getMostRecentDecl() const { + return cast_or_null<CXXRecordDecl>(RecordDecl::getMostRecentDecl()); + } + CXXRecordDecl *getMostRecentDecl() { + return cast_or_null<CXXRecordDecl>(RecordDecl::getMostRecentDecl()); + } + + CXXRecordDecl *getDefinition() const { + if (!DefinitionData) return 0; + return data().Definition; + } + + bool hasDefinition() const { return DefinitionData != 0; } + + static CXXRecordDecl *Create(const ASTContext &C, TagKind TK, DeclContext *DC, + SourceLocation StartLoc, SourceLocation IdLoc, + IdentifierInfo *Id, CXXRecordDecl* PrevDecl=0, + bool DelayTypeCreation = false); + static CXXRecordDecl *CreateLambda(const ASTContext &C, DeclContext *DC, + SourceLocation Loc, bool DependentLambda); + static CXXRecordDecl *CreateDeserialized(const ASTContext &C, unsigned ID); + + bool isDynamicClass() const { + return data().Polymorphic || data().NumVBases != 0; + } + + /// setBases - Sets the base classes of this struct or class. + void setBases(CXXBaseSpecifier const * const *Bases, unsigned NumBases); + + /// getNumBases - Retrieves the number of base classes of this + /// class. + unsigned getNumBases() const { return data().NumBases; } + + 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; + } + reverse_base_class_iterator bases_rbegin() { + return reverse_base_class_iterator(bases_end()); + } + reverse_base_class_const_iterator bases_rbegin() const { + return reverse_base_class_const_iterator(bases_end()); + } + reverse_base_class_iterator bases_rend() { + return reverse_base_class_iterator(bases_begin()); + } + reverse_base_class_const_iterator bases_rend() const { + return reverse_base_class_const_iterator(bases_begin()); + } + + /// getNumVBases - Retrieves the number of virtual base classes of this + /// class. + unsigned getNumVBases() const { return data().NumVBases; } + + 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; + } + reverse_base_class_iterator vbases_rbegin() { + return reverse_base_class_iterator(vbases_end()); + } + reverse_base_class_const_iterator vbases_rbegin() const { + return reverse_base_class_const_iterator(vbases_end()); + } + reverse_base_class_iterator vbases_rend() { + return reverse_base_class_iterator(vbases_begin()); + } + reverse_base_class_const_iterator vbases_rend() const { + return reverse_base_class_const_iterator(vbases_begin()); + } + + /// \brief Determine whether this class has any dependent base classes. + 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; + + /// method_begin - Method begin iterator. Iterates in the order the methods + /// were declared. + method_iterator method_begin() const { + return method_iterator(decls_begin()); + } + /// method_end - Method end iterator. + method_iterator method_end() const { + return method_iterator(decls_end()); + } + + /// Iterator access to constructor members. + typedef specific_decl_iterator<CXXConstructorDecl> ctor_iterator; + + 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; + 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 != 0; + } + + /// \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().DeclaredDefaultConstructor; + } + + /// hasDeclaredDefaultConstructor - Whether this class's default constructor + /// has been declared (either explicitly or implicitly). + bool hasDeclaredDefaultConstructor() const { + return data().DeclaredDefaultConstructor; + } + + /// hasConstCopyConstructor - Determines whether this class has a + /// copy constructor that accepts a const-qualified argument. + bool hasConstCopyConstructor() const; + + /// getCopyConstructor - Returns the copy constructor for this class + CXXConstructorDecl *getCopyConstructor(unsigned TypeQuals) const; + + /// getMoveConstructor - Returns the move constructor for this class + CXXConstructorDecl *getMoveConstructor() const; + + /// \brief Retrieve the copy-assignment operator for this class, if available. + /// + /// This routine attempts to find the copy-assignment operator for this + /// class, using a simplistic form of overload resolution. + /// + /// \param ArgIsConst Whether the argument to the copy-assignment operator + /// is const-qualified. + /// + /// \returns The copy-assignment operator that can be invoked, or NULL if + /// a unique copy-assignment operator could not be found. + CXXMethodDecl *getCopyAssignmentOperator(bool ArgIsConst) const; + + /// getMoveAssignmentOperator - Returns the move assignment operator for this + /// class + CXXMethodDecl *getMoveAssignmentOperator() const; + + /// hasUserDeclaredConstructor - Whether this class has any + /// user-declared constructors. When true, a default constructor + /// will not be implicitly declared. + bool hasUserDeclaredConstructor() const { + return data().UserDeclaredConstructor; + } + + /// hasUserProvidedDefaultconstructor - Whether this class has a + /// user-provided default constructor per C++0x. + bool hasUserProvidedDefaultConstructor() const { + return data().UserProvidedDefaultConstructor; + } + + /// hasUserDeclaredCopyConstructor - Whether this class has a + /// user-declared copy constructor. When false, a copy constructor + /// will be implicitly declared. + bool hasUserDeclaredCopyConstructor() const { + return data().UserDeclaredCopyConstructor; + } + + /// \brief Determine whether this class has had its copy constructor + /// declared, either via the user or via an implicit declaration. + /// + /// This value is used for lazy creation of copy constructors. + bool hasDeclaredCopyConstructor() const { + return data().DeclaredCopyConstructor; + } + + /// hasUserDeclaredMoveOperation - 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().UserDeclaredMoveConstructor || + data().UserDeclaredMoveAssignment; + } + + /// \brief Determine whether this class has had a move constructor + /// declared by the user. + bool hasUserDeclaredMoveConstructor() const { + return data().UserDeclaredMoveConstructor; + } + + /// \brief Determine whether this class has had a move constructor + /// declared. + bool hasDeclaredMoveConstructor() const { + return data().DeclaredMoveConstructor; + } + + /// \brief Determine whether implicit move constructor generation for this + /// class has failed before. + bool hasFailedImplicitMoveConstructor() const { + return data().FailedImplicitMoveConstructor; + } + + /// \brief Set whether implicit move constructor generation for this class + /// has failed before. + void setFailedImplicitMoveConstructor(bool Failed = true) { + data().FailedImplicitMoveConstructor = Failed; + } + + /// \brief Determine whether this class should get an implicit move + /// constructor or if any existing special member function inhibits this. + /// + /// Covers all bullets of C++0x [class.copy]p9 except the last, that the + /// constructor wouldn't be deleted, which is only looked up from a cached + /// result. + bool needsImplicitMoveConstructor() const { + return !hasFailedImplicitMoveConstructor() && + !hasDeclaredMoveConstructor() && + !hasUserDeclaredCopyConstructor() && + !hasUserDeclaredCopyAssignment() && + !hasUserDeclaredMoveAssignment() && + !hasUserDeclaredDestructor(); + } + + /// hasUserDeclaredCopyAssignment - 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().UserDeclaredCopyAssignment; + } + + /// \brief Determine whether this class has had its copy assignment operator + /// declared, either via the user or via an implicit declaration. + /// + /// This value is used for lazy creation of copy assignment operators. + bool hasDeclaredCopyAssignment() const { + return data().DeclaredCopyAssignment; + } + + /// \brief Determine whether this class has had a move assignment + /// declared by the user. + bool hasUserDeclaredMoveAssignment() const { + return data().UserDeclaredMoveAssignment; + } + + /// hasDeclaredMoveAssignment - Whether this class has a + /// declared move assignment operator. + bool hasDeclaredMoveAssignment() const { + return data().DeclaredMoveAssignment; + } + + /// \brief Determine whether implicit move assignment generation for this + /// class has failed before. + bool hasFailedImplicitMoveAssignment() const { + return data().FailedImplicitMoveAssignment; + } + + /// \brief Set whether implicit move assignment generation for this class + /// has failed before. + void setFailedImplicitMoveAssignment(bool Failed = true) { + data().FailedImplicitMoveAssignment = Failed; + } + + /// \brief Determine whether this class should get an implicit move + /// assignment operator or if any existing special member function inhibits + /// this. + /// + /// Covers all bullets of C++0x [class.copy]p20 except the last, that the + /// constructor wouldn't be deleted. + bool needsImplicitMoveAssignment() const { + return !hasFailedImplicitMoveAssignment() && + !hasDeclaredMoveAssignment() && + !hasUserDeclaredCopyConstructor() && + !hasUserDeclaredCopyAssignment() && + !hasUserDeclaredMoveConstructor() && + !hasUserDeclaredDestructor(); + } + + /// hasUserDeclaredDestructor - Whether this class has a + /// user-declared destructor. When false, a destructor will be + /// implicitly declared. + bool hasUserDeclaredDestructor() const { + return data().UserDeclaredDestructor; + } + + /// \brief Determine whether this class has had its destructor declared, + /// either via the user or via an implicit declaration. + /// + /// This value is used for lazy creation of destructors. + bool hasDeclaredDestructor() const { return data().DeclaredDestructor; } + + /// \brief Determine whether this class describes a lambda function object. + bool isLambda() const { return hasDefinition() && data().IsLambda; } + + /// \brief For a closure type, retrieve the mapping from captured + /// variables and 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 + /// 'this' capture. + void getCaptureFields(llvm::DenseMap<const VarDecl *, FieldDecl *> &Captures, + FieldDecl *&ThisCapture) const; + + typedef const LambdaExpr::Capture* capture_const_iterator; + capture_const_iterator captures_begin() const { + return isLambda() ? getLambdaData().Captures : NULL; + } + capture_const_iterator captures_end() const { + return isLambda() ? captures_begin() + getLambdaData().NumCaptures : NULL; + } + + /// getConversions - Retrieve the overload set containing all of the + /// conversion functions in this class. + UnresolvedSetImpl *getConversionFunctions() { + return &data().Conversions; + } + const UnresolvedSetImpl *getConversionFunctions() const { + return &data().Conversions; + } + + typedef UnresolvedSetImpl::iterator conversion_iterator; + conversion_iterator conversion_begin() const { + return getConversionFunctions()->begin(); + } + conversion_iterator conversion_end() const { + return getConversionFunctions()->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); + + /// getVisibleConversionFunctions - get all conversion functions visible + /// in current class; including conversion function templates. + const UnresolvedSetImpl *getVisibleConversionFunctions(); + + /// isAggregate - 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; } + + /// isPOD - Whether this class is a POD-type (C++ [class]p4), which is a class + /// that 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. + 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; + + /// isEmpty - Whether this class is empty (C++0x [meta.unary.prop]), which + /// means it has a virtual function, virtual base, data member (other than + /// 0-width bit-field) or inherits from a non-empty class. Does NOT include + /// a check for union-ness. + bool isEmpty() const { return data().Empty; } + + /// isPolymorphic - 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; } + + /// isAbstract - Whether this class is abstract (C++ [class.abstract]), + /// which means that the class contains or inherits a pure virtual function. + bool isAbstract() const { return data().Abstract; } + + /// isStandardLayout - Whether this class has standard layout + /// (C++ [class]p7) + bool isStandardLayout() const { return data().IsStandardLayout; } + + /// \brief Whether this class, or any of its class subobjects, contains a + /// mutable field. + bool hasMutableFields() const { return data().HasMutableFields; } + + /// hasTrivialDefaultConstructor - Whether this class has a trivial default + /// constructor (C++11 [class.ctor]p5). + bool hasTrivialDefaultConstructor() const { + return data().HasTrivialDefaultConstructor && + (!data().UserDeclaredConstructor || + data().DeclaredDefaultConstructor); + } + + /// hasConstexprNonCopyMoveConstructor - Whether this class has at least one + /// constexpr constructor other than the copy or move constructors. + bool hasConstexprNonCopyMoveConstructor() const { + return data().HasConstexprNonCopyMoveConstructor || + (!hasUserDeclaredConstructor() && + defaultedDefaultConstructorIsConstexpr()); + } + + /// defaultedDefaultConstructorIsConstexpr - Whether a defaulted default + /// constructor for this class would be constexpr. + bool defaultedDefaultConstructorIsConstexpr() const { + return data().DefaultedDefaultConstructorIsConstexpr; + } + + /// defaultedCopyConstructorIsConstexpr - Whether a defaulted copy + /// constructor for this class would be constexpr. + bool defaultedCopyConstructorIsConstexpr() const { + return data().DefaultedCopyConstructorIsConstexpr; + } + + /// defaultedMoveConstructorIsConstexpr - Whether a defaulted move + /// constructor for this class would be constexpr. + bool defaultedMoveConstructorIsConstexpr() const { + return data().DefaultedMoveConstructorIsConstexpr; + } + + /// hasConstexprDefaultConstructor - Whether this class has a constexpr + /// default constructor. + bool hasConstexprDefaultConstructor() const { + return data().HasConstexprDefaultConstructor || + (!data().UserDeclaredConstructor && + data().DefaultedDefaultConstructorIsConstexpr && isLiteral()); + } + + /// hasConstexprCopyConstructor - Whether this class has a constexpr copy + /// constructor. + bool hasConstexprCopyConstructor() const { + return data().HasConstexprCopyConstructor || + (!data().DeclaredCopyConstructor && + data().DefaultedCopyConstructorIsConstexpr && isLiteral()); + } + + /// hasConstexprMoveConstructor - Whether this class has a constexpr move + /// constructor. + bool hasConstexprMoveConstructor() const { + return data().HasConstexprMoveConstructor || + (needsImplicitMoveConstructor() && + data().DefaultedMoveConstructorIsConstexpr && isLiteral()); + } + + // hasTrivialCopyConstructor - Whether this class has a trivial copy + // constructor (C++ [class.copy]p6, C++0x [class.copy]p13) + bool hasTrivialCopyConstructor() const { + return data().HasTrivialCopyConstructor; + } + + // hasTrivialMoveConstructor - Whether this class has a trivial move + // constructor (C++0x [class.copy]p13) + bool hasTrivialMoveConstructor() const { + return data().HasTrivialMoveConstructor; + } + + // hasTrivialCopyAssignment - Whether this class has a trivial copy + // assignment operator (C++ [class.copy]p11, C++0x [class.copy]p27) + bool hasTrivialCopyAssignment() const { + return data().HasTrivialCopyAssignment; + } + + // hasTrivialMoveAssignment - Whether this class has a trivial move + // assignment operator (C++0x [class.copy]p27) + bool hasTrivialMoveAssignment() const { + return data().HasTrivialMoveAssignment; + } + + // hasTrivialDestructor - Whether this class has a trivial destructor + // (C++ [class.dtor]p3) + bool hasTrivialDestructor() const { return data().HasTrivialDestructor; } + + // hasIrrelevantDestructor - 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; + } + + // hasNonLiteralTypeFieldsOrBases - Whether this class has a non-literal or + // volatile type non-static data member or base class. + bool hasNonLiteralTypeFieldsOrBases() const { + return data().HasNonLiteralTypeFieldsOrBases; + } + + // isTriviallyCopyable - Whether this class is considered trivially copyable + // (C++0x [class]p6). + bool isTriviallyCopyable() const; + + // isTrivial - Whether this class is considered trivial + // + // C++0x [class]p6 + // A trivial class is a class that has a trivial default constructor and + // is trivially copiable. + bool isTrivial() const { + return isTriviallyCopyable() && hasTrivialDefaultConstructor(); + } + + // isLiteral - 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 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 { + return TemplateOrInstantiation.dyn_cast<ClassTemplateDecl*>(); + } + + void setDescribedClassTemplate(ClassTemplateDecl *Template) { + TemplateOrInstantiation = 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); + + /// getDestructor - Returns the destructor decl for this class. + CXXDestructorDecl *getDestructor() const; + + /// isLocalClass - 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()); + } + + /// \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 Base, false otherwise. + /// + /// \todo add a separate paramaeter 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(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 Base the definition of the base class + /// + /// \returns true if this base matched the search criteria + typedef bool ForallBasesCallback(const CXXRecordDecl *BaseDefinition, + void *UserData); + + /// \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 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, void *UserData, + 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. + /// + /// \param UserData a single pointer to user-specified data, provided to + /// lookupInBases(). + /// + /// \returns true if this base matched the search criteria, false otherwise. + typedef bool BaseMatchesCallback(const CXXBaseSpecifier *Specifier, + CXXBasePath &Path, + void *UserData); + + /// \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 UserData user data pointer that will be provided to \p BaseMatches. + /// + /// \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, void *UserData, + 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 user data pointer should refer to the canonical CXXRecordDecl of the + /// base class that we are searching for. + static bool FindBaseClass(const CXXBaseSpecifier *Specifier, + CXXBasePath &Path, void *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 user data pointer should + /// refer to the canonical CXXRecordDecl of the base class that we + /// are searching for. + static bool FindVirtualBaseClass(const CXXBaseSpecifier *Specifier, + CXXBasePath &Path, void *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. The user data pointer + /// is an opaque \c DeclarationName pointer. + static bool FindTagMember(const CXXBaseSpecifier *Specifier, + CXXBasePath &Path, void *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. The user data pointer + /// is an opaque \c DeclarationName pointer. + static bool FindOrdinaryMember(const CXXBaseSpecifier *Specifier, + CXXBasePath &Path, void *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 membes of + /// the given name within a C++ class hierarchy that can occur within + /// nested-name-specifiers. + static bool FindNestedNameSpecifierMember(const CXXBaseSpecifier *Specifier, + CXXBasePath &Path, + void *UserData); + + /// \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; + + /// viewInheritance - Renders and displays an inheritance diagram + /// for this C++ class and all of its base classes (transitively) using + /// GraphViz. + void viewInheritance(ASTContext& Context) const; + + /// MergeAccess - 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 definition of this class is now complete. + virtual void completeDefinition(); + + /// \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 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; + } + + static bool classof(const Decl *D) { return classofKind(D->getKind()); } + static bool classofKind(Kind K) { + return K >= firstCXXRecord && K <= lastCXXRecord; + } + static bool classof(const CXXRecordDecl *D) { return true; } + static bool classof(const ClassTemplateSpecializationDecl *D) { + return true; + } + + friend class ASTDeclReader; + friend class ASTDeclWriter; + friend class ASTReader; + friend class ASTWriter; +}; + +/// CXXMethodDecl - Represents a static or instance method of a +/// struct/union/class. +class CXXMethodDecl : public FunctionDecl { + virtual void anchor(); +protected: + CXXMethodDecl(Kind DK, CXXRecordDecl *RD, SourceLocation StartLoc, + const DeclarationNameInfo &NameInfo, + QualType T, TypeSourceInfo *TInfo, + bool isStatic, StorageClass SCAsWritten, bool isInline, + bool isConstexpr, SourceLocation EndLocation) + : FunctionDecl(DK, RD, StartLoc, NameInfo, T, TInfo, + (isStatic ? SC_Static : SC_None), + SCAsWritten, isInline, isConstexpr) { + if (EndLocation.isValid()) + setRangeEnd(EndLocation); + } + +public: + static CXXMethodDecl *Create(ASTContext &C, CXXRecordDecl *RD, + SourceLocation StartLoc, + const DeclarationNameInfo &NameInfo, + QualType T, TypeSourceInfo *TInfo, + bool isStatic, + StorageClass SCAsWritten, + bool isInline, + bool isConstexpr, + SourceLocation EndLocation); + + static CXXMethodDecl *CreateDeserialized(ASTContext &C, unsigned ID); + + bool isStatic() const { return getStorageClass() == SC_Static; } + bool isInstance() const { return !isStatic(); } + + bool isVirtual() const { + CXXMethodDecl *CD = + cast<CXXMethodDecl>(const_cast<CXXMethodDecl*>(this)->getCanonicalDecl()); + + if (CD->isVirtualAsWritten()) + 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; + + const CXXMethodDecl *getCanonicalDecl() const { + return cast<CXXMethodDecl>(FunctionDecl::getCanonicalDecl()); + } + CXXMethodDecl *getCanonicalDecl() { + return cast<CXXMethodDecl>(FunctionDecl::getCanonicalDecl()); + } + + /// isUserProvided - True if it is either an implicit constructor or + /// if it was defaulted or deleted on 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; + + /// getParent - 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()); + } + + /// 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())); + } + + /// getThisType - Returns the type of 'this' pointer. + /// Should only be called for instance 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; + + // Implement isa/cast/dyncast/etc. + static bool classof(const Decl *D) { return classofKind(D->getKind()); } + static bool classof(const CXXMethodDecl *D) { return true; } + static bool classofKind(Kind K) { + return K >= firstCXXMethod && K <= lastCXXMethod; + } +}; + +/// CXXCtorInitializer - Represents a C++ base or member +/// initializer, which 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 { + /// \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). + /// If 0, this is a field initializer, and the in-class member initializer + /// will be used. + Stmt *Init; + + /// LParenLoc - Location of the left paren of the ctor-initializer. + SourceLocation LParenLoc; + + /// RParenLoc - 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; + + /// IsVirtual - If the initializer is a base initializer, this keeps track + /// of whether the base is virtual or not. + bool IsVirtual : 1; + + /// IsWritten - Whether or not the initializer is explicitly written + /// in the sources. + bool IsWritten : 1; + + /// SourceOrderOrNumArrayIndices - If IsWritten is true, then this + /// number keeps track of the textual order of this initializer in the + /// original sources, counting from 0; otherwise, if IsWritten is false, + /// 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: + /// CXXCtorInitializer - Creates a new base-class initializer. + explicit + CXXCtorInitializer(ASTContext &Context, TypeSourceInfo *TInfo, bool IsVirtual, + SourceLocation L, Expr *Init, SourceLocation R, + SourceLocation EllipsisLoc); + + /// CXXCtorInitializer - Creates a new member initializer. + explicit + CXXCtorInitializer(ASTContext &Context, FieldDecl *Member, + SourceLocation MemberLoc, SourceLocation L, Expr *Init, + SourceLocation R); + + /// CXXCtorInitializer - Creates a new anonymous field initializer. + explicit + CXXCtorInitializer(ASTContext &Context, IndirectFieldDecl *Member, + SourceLocation MemberLoc, SourceLocation L, Expr *Init, + SourceLocation R); + + /// CXXCtorInitializer - 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); + + /// isBaseInitializer - Returns true when this initializer is + /// initializing a base class. + bool isBaseInitializer() const { + return Initializee.is<TypeSourceInfo*>() && !IsDelegating; + } + + /// isMemberInitializer - Returns true when 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*>(); + } + + /// isInClassMemberInitializer - Returns true when this initializer is an + /// implicit ctor initializer generated for a field with an initializer + /// defined on the member declaration. + bool isInClassMemberInitializer() const { + return !Init; + } + + /// isDelegatingInitializer - Returns true when 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 *>(); + } + + /// getMember - 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 0; + } + FieldDecl *getAnyMember() const { + if (isMemberInitializer()) + return Initializee.get<FieldDecl*>(); + if (isIndirectMemberInitializer()) + return Initializee.get<IndirectFieldDecl*>()->getAnonField(); + return 0; + } + + IndirectFieldDecl *getIndirectMember() const { + if (isIndirectMemberInitializer()) + return Initializee.get<IndirectFieldDecl*>(); + return 0; + } + + 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; + + /// isWritten - Returns true if 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 method can only + /// be called once for each initializer; it cannot be called on an + /// initializer having a positive number of (implicit) array indices. + 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 reinterpret_cast<VarDecl **>(this + 1)[I]; + } + const VarDecl *getArrayIndex(unsigned I) const { + assert(I < getNumArrayIndices() && "Out of bounds member array index"); + return reinterpret_cast<const VarDecl * const *>(this + 1)[I]; + } + void setArrayIndex(unsigned I, VarDecl *Index) { + assert(I < getNumArrayIndices() && "Out of bounds member array index"); + reinterpret_cast<VarDecl **>(this + 1)[I] = Index; + } + ArrayRef<VarDecl *> getArrayIndexes() { + assert(getNumArrayIndices() != 0 && "Getting indexes for non-array init"); + return ArrayRef<VarDecl *>(reinterpret_cast<VarDecl **>(this + 1), + getNumArrayIndices()); + } + + /// \brief Get the initializer. This is 0 if this is an in-class initializer + /// for a non-static data member which has not yet been parsed. + Expr *getInit() const { + if (!Init) + return getAnyMember()->getInClassInitializer(); + + return static_cast<Expr*>(Init); + } +}; + +/// CXXConstructorDecl - 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 { + virtual void anchor(); + /// IsExplicitSpecified - Whether this constructor declaration has the + /// 'explicit' keyword specified. + bool IsExplicitSpecified : 1; + + /// ImplicitlyDefined - Whether this constructor was implicitly + /// defined by the compiler. When false, the constructor was defined + /// by the user. In C++03, this flag will have the same value as + /// Implicit. In C++0x, however, a constructor that is + /// explicitly defaulted (i.e., defined with " = default") will have + /// @c !Implicit && ImplicitlyDefined. + bool ImplicitlyDefined : 1; + + /// Support for base and member initializers. + /// CtorInitializers - The arguments used to initialize the base + /// or member. + CXXCtorInitializer **CtorInitializers; + unsigned NumCtorInitializers; + + CXXConstructorDecl(CXXRecordDecl *RD, SourceLocation StartLoc, + const DeclarationNameInfo &NameInfo, + QualType T, TypeSourceInfo *TInfo, + bool isExplicitSpecified, bool isInline, + bool isImplicitlyDeclared, bool isConstexpr) + : CXXMethodDecl(CXXConstructor, RD, StartLoc, NameInfo, T, TInfo, false, + SC_None, isInline, isConstexpr, SourceLocation()), + IsExplicitSpecified(isExplicitSpecified), ImplicitlyDefined(false), + CtorInitializers(0), 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); + + /// isExplicitSpecified - Whether this constructor declaration has the + /// 'explicit' keyword specified. + bool isExplicitSpecified() const { return IsExplicitSpecified; } + + /// isExplicit - Whether this constructor was marked "explicit" or not. + bool isExplicit() const { + return cast<CXXConstructorDecl>(getFirstDeclaration()) + ->isExplicitSpecified(); + } + + /// isImplicitlyDefined - Whether this constructor was implicitly + /// defined. If false, then this constructor was defined by the + /// user. This operation can only be invoked if the constructor has + /// already been defined. + bool isImplicitlyDefined() const { + assert(isThisDeclarationADefinition() && + "Can only get the implicit-definition flag once the " + "constructor has been defined"); + return ImplicitlyDefined; + } + + /// setImplicitlyDefined - Set whether this constructor was + /// implicitly defined or not. + void setImplicitlyDefined(bool ID) { + assert(isThisDeclarationADefinition() && + "Can only set the implicit-definition flag once the constructor " + "has been defined"); + ImplicitlyDefined = ID; + } + + /// init_iterator - Iterates through the member/base initializer list. + typedef CXXCtorInitializer **init_iterator; + + /// init_const_iterator - Iterates through the memberbase initializer list. + typedef CXXCtorInitializer * const * init_const_iterator; + + /// init_begin() - Retrieve an iterator to the first initializer. + init_iterator init_begin() { return CtorInitializers; } + /// begin() - Retrieve an iterator to the first initializer. + init_const_iterator init_begin() const { return CtorInitializers; } + + /// init_end() - Retrieve an iterator past the last initializer. + init_iterator init_end() { + return CtorInitializers + NumCtorInitializers; + } + /// end() - Retrieve an iterator past the last initializer. + init_const_iterator init_end() const { + return CtorInitializers + 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()); + } + + /// getNumArgs - 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; + } + + /// isDelegatingConstructor - Whether this constructor is a + /// delegating constructor + bool isDelegatingConstructor() const { + return (getNumCtorInitializers() == 1) && + CtorInitializers[0]->isDelegatingInitializer(); + } + + /// getTargetConstructor - When this constructor delegates to + /// another, retrieve the target + CXXConstructorDecl *getTargetConstructor() const; + + /// isDefaultConstructor - 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; + + /// isCopyConstructor - 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 + /// QualType::Const for the following copy constructor: + /// + /// @code + /// class X { + /// public: + /// X(const X&); + /// }; + /// @endcode + bool isCopyConstructor(unsigned &TypeQuals) const; + + /// isCopyConstructor - 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++0x [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++0x [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); + } + + /// isConvertingConstructor - 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); + + const CXXConstructorDecl *getCanonicalDecl() const { + return cast<CXXConstructorDecl>(FunctionDecl::getCanonicalDecl()); + } + CXXConstructorDecl *getCanonicalDecl() { + return cast<CXXConstructorDecl>(FunctionDecl::getCanonicalDecl()); + } + + // Implement isa/cast/dyncast/etc. + static bool classof(const Decl *D) { return classofKind(D->getKind()); } + static bool classof(const CXXConstructorDecl *D) { return true; } + static bool classofKind(Kind K) { return K == CXXConstructor; } + + friend class ASTDeclReader; + friend class ASTDeclWriter; +}; + +/// CXXDestructorDecl - Represents a C++ destructor within a +/// class. For example: +/// +/// @code +/// class X { +/// public: +/// ~X(); // represented by a CXXDestructorDecl. +/// }; +/// @endcode +class CXXDestructorDecl : public CXXMethodDecl { + virtual void anchor(); + /// ImplicitlyDefined - Whether this destructor was implicitly + /// defined by the compiler. When false, the destructor was defined + /// by the user. In C++03, this flag will have the same value as + /// Implicit. In C++0x, however, a destructor that is + /// explicitly defaulted (i.e., defined with " = default") will have + /// @c !Implicit && ImplicitlyDefined. + bool ImplicitlyDefined : 1; + + FunctionDecl *OperatorDelete; + + CXXDestructorDecl(CXXRecordDecl *RD, SourceLocation StartLoc, + const DeclarationNameInfo &NameInfo, + QualType T, TypeSourceInfo *TInfo, + bool isInline, bool isImplicitlyDeclared) + : CXXMethodDecl(CXXDestructor, RD, StartLoc, NameInfo, T, TInfo, false, + SC_None, isInline, /*isConstexpr=*/false, SourceLocation()), + ImplicitlyDefined(false), OperatorDelete(0) { + 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); + + /// isImplicitlyDefined - Whether this destructor was implicitly + /// defined. If false, then this destructor was defined by the + /// user. This operation can only be invoked if the destructor has + /// already been defined. + bool isImplicitlyDefined() const { + assert(isThisDeclarationADefinition() && + "Can only get the implicit-definition flag once the destructor has " + "been defined"); + return ImplicitlyDefined; + } + + /// setImplicitlyDefined - Set whether this destructor was + /// implicitly defined or not. + void setImplicitlyDefined(bool ID) { + assert(isThisDeclarationADefinition() && + "Can only set the implicit-definition flag once the destructor has " + "been defined"); + ImplicitlyDefined = ID; + } + + void setOperatorDelete(FunctionDecl *OD) { OperatorDelete = OD; } + const FunctionDecl *getOperatorDelete() const { return OperatorDelete; } + + // Implement isa/cast/dyncast/etc. + static bool classof(const Decl *D) { return classofKind(D->getKind()); } + static bool classof(const CXXDestructorDecl *D) { return true; } + static bool classofKind(Kind K) { return K == CXXDestructor; } + + friend class ASTDeclReader; + friend class ASTDeclWriter; +}; + +/// CXXConversionDecl - Represents a C++ conversion function within a +/// class. For example: +/// +/// @code +/// class X { +/// public: +/// operator bool(); +/// }; +/// @endcode +class CXXConversionDecl : public CXXMethodDecl { + virtual void anchor(); + /// IsExplicitSpecified - 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++0x feature. + bool IsExplicitSpecified : 1; + + CXXConversionDecl(CXXRecordDecl *RD, SourceLocation StartLoc, + const DeclarationNameInfo &NameInfo, + QualType T, TypeSourceInfo *TInfo, + bool isInline, bool isExplicitSpecified, + bool isConstexpr, SourceLocation EndLocation) + : CXXMethodDecl(CXXConversion, RD, StartLoc, NameInfo, T, TInfo, false, + 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); + + /// IsExplicitSpecified - 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++0x feature. + bool isExplicitSpecified() const { return IsExplicitSpecified; } + + /// isExplicit - Whether this is an explicit conversion operator + /// (C++0x only). Explicit conversion operators are only considered + /// when the user has explicitly written a cast. + bool isExplicit() const { + return cast<CXXConversionDecl>(getFirstDeclaration()) + ->isExplicitSpecified(); + } + + /// getConversionType - Returns the type that this conversion + /// function is converting to. + QualType getConversionType() const { + return getType()->getAs<FunctionType>()->getResultType(); + } + + /// \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 classof(const CXXConversionDecl *D) { return true; } + static bool classofKind(Kind K) { return K == CXXConversion; } + + friend class ASTDeclReader; + friend class ASTDeclWriter; +}; + +/// LinkageSpecDecl - This represents a linkage specification. For example: +/// extern "C" void foo(); +/// +class LinkageSpecDecl : public Decl, public DeclContext { + virtual void anchor(); +public: + /// LanguageIDs - Used to represent 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: + /// Language - The language for this linkage specification. + LanguageIDs Language; + /// ExternLoc - The source location for the extern keyword. + SourceLocation ExternLoc; + /// RBraceLoc - The source location for the right brace (if valid). + SourceLocation RBraceLoc; + + LinkageSpecDecl(DeclContext *DC, SourceLocation ExternLoc, + SourceLocation LangLoc, LanguageIDs lang, + SourceLocation RBLoc) + : Decl(LinkageSpec, DC, LangLoc), DeclContext(LinkageSpec), + Language(lang), ExternLoc(ExternLoc), RBraceLoc(RBLoc) { } + +public: + static LinkageSpecDecl *Create(ASTContext &C, DeclContext *DC, + SourceLocation ExternLoc, + SourceLocation LangLoc, LanguageIDs Lang, + SourceLocation RBraceLoc = SourceLocation()); + static LinkageSpecDecl *CreateDeserialized(ASTContext &C, unsigned ID); + + /// \brief Return the language specified by this linkage specification. + LanguageIDs getLanguage() const { return 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 { return RBraceLoc.isValid(); } + + SourceLocation getExternLoc() const { return ExternLoc; } + SourceLocation getRBraceLoc() const { return RBraceLoc; } + void setExternLoc(SourceLocation L) { ExternLoc = L; } + void setRBraceLoc(SourceLocation L) { RBraceLoc = L; } + + 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 LLVM_READONLY { + return SourceRange(ExternLoc, getLocEnd()); + } + + static bool classof(const Decl *D) { return classofKind(D->getKind()); } + static bool classof(const LinkageSpecDecl *D) { return true; } + 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)); + } +}; + +/// UsingDirectiveDecl - Represents C++ using-directive. For example: +/// +/// using namespace std; +/// +// NB: 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 { + virtual void anchor(); + /// \brief The location of the "using" keyword. + SourceLocation UsingLoc; + + /// SourceLocation - Location of 'namespace' token. + SourceLocation NamespaceLoc; + + /// \brief The nested-name-specifier that precedes the namespace. + NestedNameSpecifierLoc QualifierLoc; + + /// NominatedNamespace - Namespace nominated by using-directive. + NamedDecl *NominatedNamespace; + + /// Enclosing context containing both using-directive and nominated + /// namespace. + DeclContext *CommonAncestor; + + /// getUsingDirectiveName - 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; + } + + /// getNominatedNamespace - Returns namespace nominated by 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 "using" keyword. + SourceLocation getUsingLoc() const { return UsingLoc; } + + // FIXME: Could omit 'Key' in name. + /// getNamespaceKeyLocation - Returns location of namespace keyword. + SourceLocation getNamespaceKeyLocation() const { return NamespaceLoc; } + + /// getIdentLocation - Returns location of 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 LLVM_READONLY { + return SourceRange(UsingLoc, getLocation()); + } + + static bool classof(const Decl *D) { return classofKind(D->getKind()); } + static bool classof(const UsingDirectiveDecl *D) { return true; } + static bool classofKind(Kind K) { return K == UsingDirective; } + + // Friend for getUsingDirectiveName. + friend class DeclContext; + + friend class ASTDeclReader; +}; + +/// NamespaceAliasDecl - Represents a C++ namespace alias. For example: +/// +/// @code +/// namespace Foo = Bar; +/// @endcode +class NamespaceAliasDecl : public NamedDecl { + virtual void anchor(); + + /// \brief The location of the "namespace" keyword. + SourceLocation NamespaceLoc; + + /// IdentLoc - Location of namespace identifier. Accessed by TargetNameLoc. + SourceLocation IdentLoc; + + /// \brief The nested-name-specifier that precedes the namespace. + NestedNameSpecifierLoc QualifierLoc; + + /// Namespace - The Decl that this alias points to. Can either be a + /// NamespaceDecl or a NamespaceAliasDecl. + NamedDecl *Namespace; + + NamespaceAliasDecl(DeclContext *DC, SourceLocation NamespaceLoc, + SourceLocation AliasLoc, IdentifierInfo *Alias, + NestedNameSpecifierLoc QualifierLoc, + SourceLocation IdentLoc, NamedDecl *Namespace) + : NamedDecl(NamespaceAlias, DC, AliasLoc, Alias), + NamespaceLoc(NamespaceLoc), IdentLoc(IdentLoc), + QualifierLoc(QualifierLoc), Namespace(Namespace) { } + + friend class ASTDeclReader; + +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(); + } + + /// \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 '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; } + + 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); + + virtual SourceRange getSourceRange() const LLVM_READONLY { + return SourceRange(NamespaceLoc, IdentLoc); + } + + static bool classof(const Decl *D) { return classofKind(D->getKind()); } + static bool classof(const NamespaceAliasDecl *D) { return true; } + static bool classofKind(Kind K) { return K == NamespaceAlias; } +}; + +/// UsingShadowDecl - Represents a shadow declaration introduced into +/// a scope by a (resolved) using declaration. For example, +/// +/// namespace A { +/// void foo(); +/// } +/// namespace B { +/// using A::foo(); // <- a UsingDecl +/// // Also creates a UsingShadowDecl for A::foo in B +/// } +/// +class UsingShadowDecl : public NamedDecl { + virtual void anchor(); + + /// 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(DeclContext *DC, SourceLocation Loc, UsingDecl *Using, + NamedDecl *Target) + : NamedDecl(UsingShadow, DC, Loc, DeclarationName()), + Underlying(Target), + UsingOrNextShadow(reinterpret_cast<NamedDecl *>(Using)) { + if (Target) { + setDeclName(Target->getDeclName()); + IdentifierNamespace = Target->getIdentifierNamespace(); + } + setImplicit(); + } + +public: + static UsingShadowDecl *Create(ASTContext &C, DeclContext *DC, + SourceLocation Loc, UsingDecl *Using, + NamedDecl *Target) { + return new (C) UsingShadowDecl(DC, Loc, Using, Target); + } + + static UsingShadowDecl *CreateDeserialized(ASTContext &C, unsigned ID); + + /// \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 classof(const UsingShadowDecl *D) { return true; } + static bool classofKind(Kind K) { return K == Decl::UsingShadow; } + + friend class ASTDeclReader; + friend class ASTDeclWriter; +}; + +/// UsingDecl - Represents a C++ using-declaration. For example: +/// using someNameSpace::someIdentifier; +class UsingDecl : public NamedDecl { + virtual void anchor(); + + /// \brief The source location of the "using" location itself. + SourceLocation UsingLocation; + + /// \brief The nested-name-specifier that precedes the name. + NestedNameSpecifierLoc QualifierLoc; + + /// DNLoc - 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 'typename' keyword. + llvm::PointerIntPair<UsingShadowDecl *, 1, bool> FirstUsingShadow; + + UsingDecl(DeclContext *DC, SourceLocation UL, + NestedNameSpecifierLoc QualifierLoc, + const DeclarationNameInfo &NameInfo, bool IsTypeNameArg) + : NamedDecl(Using, DC, NameInfo.getLoc(), NameInfo.getName()), + UsingLocation(UL), QualifierLoc(QualifierLoc), + DNLoc(NameInfo.getInfo()), FirstUsingShadow(0, IsTypeNameArg) { + } + +public: + /// \brief Returns the source location of the "using" keyword. + SourceLocation getUsingLocation() const { return UsingLocation; } + + /// \brief Set the source location of the 'using' keyword. + void setUsingLocation(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 the using declaration has 'typename'. + bool isTypeName() 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 assosiated 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(0) { } + 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; + } + }; + + 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 IsTypeNameArg); + + static UsingDecl *CreateDeserialized(ASTContext &C, unsigned ID); + + SourceRange getSourceRange() const LLVM_READONLY { + return SourceRange(UsingLocation, getNameInfo().getEndLoc()); + } + + static bool classof(const Decl *D) { return classofKind(D->getKind()); } + static bool classof(const UsingDecl *D) { return true; } + static bool classofKind(Kind K) { return K == Using; } + + friend class ASTDeclReader; + friend class ASTDeclWriter; +}; + +/// UnresolvedUsingValueDecl - Represents a dependent using +/// declaration which was not marked with 'typename'. Unlike +/// non-dependent using declarations, these *only* bring through +/// non-types; otherwise they would break two-phase lookup. +/// +/// template <class T> class A : public Base<T> { +/// using Base<T>::foo; +/// }; +class UnresolvedUsingValueDecl : public ValueDecl { + virtual void anchor(); + + /// \brief The source location of the 'using' keyword + SourceLocation UsingLocation; + + /// \brief The nested-name-specifier that precedes the name. + NestedNameSpecifierLoc QualifierLoc; + + /// DNLoc - 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 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 LLVM_READONLY { + return SourceRange(UsingLocation, getNameInfo().getEndLoc()); + } + + static bool classof(const Decl *D) { return classofKind(D->getKind()); } + static bool classof(const UnresolvedUsingValueDecl *D) { return true; } + static bool classofKind(Kind K) { return K == UnresolvedUsingValue; } + + friend class ASTDeclReader; + friend class ASTDeclWriter; +}; + +/// UnresolvedUsingTypenameDecl - Represents a dependent using +/// declaration which was marked with 'typename'. +/// +/// template <class T> class A : public Base<T> { +/// using typename Base<T>::foo; +/// }; +/// +/// The type associated with a unresolved using typename decl is +/// currently always a typename type. +class UnresolvedUsingTypenameDecl : public TypeDecl { + virtual void anchor(); + + /// \brief The source location of the 'using' keyword + SourceLocation UsingLocation; + + /// \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); + + static bool classof(const Decl *D) { return classofKind(D->getKind()); } + static bool classof(const UnresolvedUsingTypenameDecl *D) { return true; } + static bool classofKind(Kind K) { return K == UnresolvedUsingTypename; } +}; + +/// StaticAssertDecl - Represents a C++0x static_assert declaration. +class StaticAssertDecl : public Decl { + virtual void anchor(); + Expr *AssertExpr; + StringLiteral *Message; + SourceLocation RParenLoc; + + StaticAssertDecl(DeclContext *DC, SourceLocation StaticAssertLoc, + Expr *assertexpr, StringLiteral *message, + SourceLocation RParenLoc) + : Decl(StaticAssert, DC, StaticAssertLoc), AssertExpr(assertexpr), + Message(message), RParenLoc(RParenLoc) { } + +public: + static StaticAssertDecl *Create(ASTContext &C, DeclContext *DC, + SourceLocation StaticAssertLoc, + Expr *AssertExpr, StringLiteral *Message, + SourceLocation RParenLoc); + static StaticAssertDecl *CreateDeserialized(ASTContext &C, unsigned ID); + + Expr *getAssertExpr() { return AssertExpr; } + const Expr *getAssertExpr() const { return AssertExpr; } + + StringLiteral *getMessage() { return Message; } + const StringLiteral *getMessage() const { return Message; } + + SourceLocation getRParenLoc() const { return RParenLoc; } + void setRParenLoc(SourceLocation L) { RParenLoc = L; } + + SourceRange getSourceRange() const LLVM_READONLY { + return SourceRange(getLocation(), getRParenLoc()); + } + + static bool classof(const Decl *D) { return classofKind(D->getKind()); } + static bool classof(StaticAssertDecl *D) { return true; } + static bool classofKind(Kind K) { return K == StaticAssert; } + + friend class ASTDeclReader; +}; + +/// Insertion operator for diagnostics. This allows sending AccessSpecifier's +/// into a diagnostic with <<. +const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, + AccessSpecifier AS); + +const PartialDiagnostic &operator<<(const PartialDiagnostic &DB, + AccessSpecifier AS); + +} // end namespace clang + +#endif |