3338 lines
125 KiB
C++
3338 lines
125 KiB
C++
//===--- Decl.h - Classes for representing declarations ---------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the Decl subclasses.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_AST_DECL_H
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#define LLVM_CLANG_AST_DECL_H
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#include "clang/AST/APValue.h"
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#include "clang/AST/DeclBase.h"
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#include "clang/AST/DeclarationName.h"
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#include "clang/AST/ExternalASTSource.h"
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#include "clang/AST/Redeclarable.h"
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#include "clang/AST/Type.h"
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#include "clang/Basic/Linkage.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/Support/Compiler.h"
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namespace clang {
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struct ASTTemplateArgumentListInfo;
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class CXXTemporary;
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class CompoundStmt;
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class DependentFunctionTemplateSpecializationInfo;
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class Expr;
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class FunctionTemplateDecl;
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class FunctionTemplateSpecializationInfo;
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class LabelStmt;
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class MemberSpecializationInfo;
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class Module;
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class NestedNameSpecifier;
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class Stmt;
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class StringLiteral;
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class TemplateArgumentList;
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class TemplateParameterList;
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class TypeLoc;
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class UnresolvedSetImpl;
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/// \brief A container of type source information.
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///
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/// A client can read the relevant info using TypeLoc wrappers, e.g:
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/// @code
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/// TypeLoc TL = TypeSourceInfo->getTypeLoc();
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/// if (PointerLoc *PL = dyn_cast<PointerLoc>(&TL))
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/// PL->getStarLoc().print(OS, SrcMgr);
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/// @endcode
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///
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class TypeSourceInfo {
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QualType Ty;
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// Contains a memory block after the class, used for type source information,
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// allocated by ASTContext.
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friend class ASTContext;
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TypeSourceInfo(QualType ty) : Ty(ty) { }
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public:
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/// \brief Return the type wrapped by this type source info.
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QualType getType() const { return Ty; }
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/// \brief Return the TypeLoc wrapper for the type source info.
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TypeLoc getTypeLoc() const; // implemented in TypeLoc.h
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};
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/// TranslationUnitDecl - The top declaration context.
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class TranslationUnitDecl : public Decl, public DeclContext {
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virtual void anchor();
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ASTContext &Ctx;
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/// The (most recently entered) anonymous namespace for this
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/// translation unit, if one has been created.
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NamespaceDecl *AnonymousNamespace;
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explicit TranslationUnitDecl(ASTContext &ctx)
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: Decl(TranslationUnit, 0, SourceLocation()),
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DeclContext(TranslationUnit),
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Ctx(ctx), AnonymousNamespace(0) {}
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public:
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ASTContext &getASTContext() const { return Ctx; }
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NamespaceDecl *getAnonymousNamespace() const { return AnonymousNamespace; }
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void setAnonymousNamespace(NamespaceDecl *D) { AnonymousNamespace = D; }
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static TranslationUnitDecl *Create(ASTContext &C);
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// Implement isa/cast/dyncast/etc.
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static bool classof(const Decl *D) { return classofKind(D->getKind()); }
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static bool classofKind(Kind K) { return K == TranslationUnit; }
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static DeclContext *castToDeclContext(const TranslationUnitDecl *D) {
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return static_cast<DeclContext *>(const_cast<TranslationUnitDecl*>(D));
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}
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static TranslationUnitDecl *castFromDeclContext(const DeclContext *DC) {
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return static_cast<TranslationUnitDecl *>(const_cast<DeclContext*>(DC));
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}
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};
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/// NamedDecl - This represents a decl with a name. Many decls have names such
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/// as ObjCMethodDecl, but not \@class, etc.
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class NamedDecl : public Decl {
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virtual void anchor();
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/// Name - The name of this declaration, which is typically a normal
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/// identifier but may also be a special kind of name (C++
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/// constructor, Objective-C selector, etc.)
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DeclarationName Name;
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private:
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NamedDecl *getUnderlyingDeclImpl();
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void verifyLinkage() const;
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protected:
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NamedDecl(Kind DK, DeclContext *DC, SourceLocation L, DeclarationName N)
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: Decl(DK, DC, L), Name(N) { }
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public:
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/// getIdentifier - Get the identifier that names this declaration,
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/// if there is one. This will return NULL if this declaration has
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/// no name (e.g., for an unnamed class) or if the name is a special
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/// name (C++ constructor, Objective-C selector, etc.).
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IdentifierInfo *getIdentifier() const { return Name.getAsIdentifierInfo(); }
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/// getName - Get the name of identifier for this declaration as a StringRef.
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/// This requires that the declaration have a name and that it be a simple
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/// identifier.
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StringRef getName() const {
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assert(Name.isIdentifier() && "Name is not a simple identifier");
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return getIdentifier() ? getIdentifier()->getName() : "";
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}
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/// getNameAsString - Get a human-readable name for the declaration, even if
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/// it is one of the special kinds of names (C++ constructor, Objective-C
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/// selector, etc). Creating this name requires expensive string
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/// manipulation, so it should be called only when performance doesn't matter.
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/// For simple declarations, getNameAsCString() should suffice.
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//
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// FIXME: This function should be renamed to indicate that it is not just an
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// alternate form of getName(), and clients should move as appropriate.
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//
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// FIXME: Deprecated, move clients to getName().
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std::string getNameAsString() const { return Name.getAsString(); }
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void printName(raw_ostream &os) const { return Name.printName(os); }
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/// getDeclName - Get the actual, stored name of the declaration,
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/// which may be a special name.
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DeclarationName getDeclName() const { return Name; }
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/// \brief Set the name of this declaration.
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void setDeclName(DeclarationName N) { Name = N; }
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/// printQualifiedName - Returns human-readable qualified name for
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/// declaration, like A::B::i, for i being member of namespace A::B.
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/// If declaration is not member of context which can be named (record,
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/// namespace), it will return same result as printName().
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/// Creating this name is expensive, so it should be called only when
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/// performance doesn't matter.
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void printQualifiedName(raw_ostream &OS) const;
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void printQualifiedName(raw_ostream &OS, const PrintingPolicy &Policy) const;
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// FIXME: Remove string versions.
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std::string getQualifiedNameAsString() const;
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std::string getQualifiedNameAsString(const PrintingPolicy &Policy) const;
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/// getNameForDiagnostic - Appends a human-readable name for this
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/// declaration into the given stream.
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///
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/// This is the method invoked by Sema when displaying a NamedDecl
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/// in a diagnostic. It does not necessarily produce the same
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/// result as printName(); for example, class template
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/// specializations are printed with their template arguments.
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virtual void getNameForDiagnostic(raw_ostream &OS,
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const PrintingPolicy &Policy,
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bool Qualified) const;
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/// declarationReplaces - Determine whether this declaration, if
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/// known to be well-formed within its context, will replace the
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/// declaration OldD if introduced into scope. A declaration will
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/// replace another declaration if, for example, it is a
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/// redeclaration of the same variable or function, but not if it is
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/// a declaration of a different kind (function vs. class) or an
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/// overloaded function.
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bool declarationReplaces(NamedDecl *OldD) const;
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/// \brief Determine whether this declaration has linkage.
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bool hasLinkage() const;
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using Decl::isModulePrivate;
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using Decl::setModulePrivate;
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/// \brief Determine whether this declaration is hidden from name lookup.
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bool isHidden() const { return Hidden; }
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/// \brief Determine whether this declaration is a C++ class member.
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bool isCXXClassMember() const {
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const DeclContext *DC = getDeclContext();
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// C++0x [class.mem]p1:
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// The enumerators of an unscoped enumeration defined in
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// the class are members of the class.
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// FIXME: support C++0x scoped enumerations.
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if (isa<EnumDecl>(DC))
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DC = DC->getParent();
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return DC->isRecord();
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}
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/// \brief Determine whether the given declaration is an instance member of
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/// a C++ class.
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bool isCXXInstanceMember() const;
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/// \brief Determine what kind of linkage this entity has.
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Linkage getLinkage() const;
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/// \brief True if this decl has external linkage.
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bool hasExternalLinkage() const {
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return getLinkage() == ExternalLinkage;
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}
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/// \brief Determines the visibility of this entity.
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Visibility getVisibility() const {
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return getLinkageAndVisibility().getVisibility();
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}
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/// \brief Determines the linkage and visibility of this entity.
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LinkageInfo getLinkageAndVisibility() const;
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/// Kinds of explicit visibility.
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enum ExplicitVisibilityKind {
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VisibilityForType,
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VisibilityForValue
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};
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/// \brief If visibility was explicitly specified for this
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/// declaration, return that visibility.
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Optional<Visibility>
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getExplicitVisibility(ExplicitVisibilityKind kind) const;
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/// \brief True if the computed linkage is valid. Used for consistency
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/// checking. Should always return true.
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bool isLinkageValid() const;
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/// \brief Looks through UsingDecls and ObjCCompatibleAliasDecls for
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/// the underlying named decl.
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NamedDecl *getUnderlyingDecl() {
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// Fast-path the common case.
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if (this->getKind() != UsingShadow &&
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this->getKind() != ObjCCompatibleAlias)
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return this;
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return getUnderlyingDeclImpl();
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}
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const NamedDecl *getUnderlyingDecl() const {
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return const_cast<NamedDecl*>(this)->getUnderlyingDecl();
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}
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static bool classof(const Decl *D) { return classofKind(D->getKind()); }
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static bool classofKind(Kind K) { return K >= firstNamed && K <= lastNamed; }
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};
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inline raw_ostream &operator<<(raw_ostream &OS, const NamedDecl &ND) {
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ND.printName(OS);
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return OS;
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}
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/// LabelDecl - Represents the declaration of a label. Labels also have a
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/// corresponding LabelStmt, which indicates the position that the label was
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/// defined at. For normal labels, the location of the decl is the same as the
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/// location of the statement. For GNU local labels (__label__), the decl
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/// location is where the __label__ is.
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class LabelDecl : public NamedDecl {
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virtual void anchor();
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LabelStmt *TheStmt;
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/// LocStart - For normal labels, this is the same as the main declaration
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/// label, i.e., the location of the identifier; for GNU local labels,
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/// this is the location of the __label__ keyword.
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SourceLocation LocStart;
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LabelDecl(DeclContext *DC, SourceLocation IdentL, IdentifierInfo *II,
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LabelStmt *S, SourceLocation StartL)
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: NamedDecl(Label, DC, IdentL, II), TheStmt(S), LocStart(StartL) {}
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public:
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static LabelDecl *Create(ASTContext &C, DeclContext *DC,
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SourceLocation IdentL, IdentifierInfo *II);
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static LabelDecl *Create(ASTContext &C, DeclContext *DC,
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SourceLocation IdentL, IdentifierInfo *II,
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SourceLocation GnuLabelL);
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static LabelDecl *CreateDeserialized(ASTContext &C, unsigned ID);
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LabelStmt *getStmt() const { return TheStmt; }
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void setStmt(LabelStmt *T) { TheStmt = T; }
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bool isGnuLocal() const { return LocStart != getLocation(); }
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void setLocStart(SourceLocation L) { LocStart = L; }
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SourceRange getSourceRange() const LLVM_READONLY {
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return SourceRange(LocStart, getLocation());
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}
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// Implement isa/cast/dyncast/etc.
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static bool classof(const Decl *D) { return classofKind(D->getKind()); }
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static bool classofKind(Kind K) { return K == Label; }
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};
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/// NamespaceDecl - Represent a C++ namespace.
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class NamespaceDecl : public NamedDecl, public DeclContext,
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public Redeclarable<NamespaceDecl>
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{
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virtual void anchor();
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/// LocStart - The starting location of the source range, pointing
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/// to either the namespace or the inline keyword.
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SourceLocation LocStart;
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/// RBraceLoc - The ending location of the source range.
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SourceLocation RBraceLoc;
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/// \brief A pointer to either the anonymous namespace that lives just inside
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/// this namespace or to the first namespace in the chain (the latter case
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/// only when this is not the first in the chain), along with a
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/// boolean value indicating whether this is an inline namespace.
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llvm::PointerIntPair<NamespaceDecl *, 1, bool> AnonOrFirstNamespaceAndInline;
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NamespaceDecl(DeclContext *DC, bool Inline, SourceLocation StartLoc,
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SourceLocation IdLoc, IdentifierInfo *Id,
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NamespaceDecl *PrevDecl);
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typedef Redeclarable<NamespaceDecl> redeclarable_base;
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virtual NamespaceDecl *getNextRedeclaration() {
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return RedeclLink.getNext();
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}
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virtual NamespaceDecl *getPreviousDeclImpl() {
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return getPreviousDecl();
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}
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virtual NamespaceDecl *getMostRecentDeclImpl() {
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return getMostRecentDecl();
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}
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public:
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static NamespaceDecl *Create(ASTContext &C, DeclContext *DC,
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bool Inline, SourceLocation StartLoc,
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SourceLocation IdLoc, IdentifierInfo *Id,
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NamespaceDecl *PrevDecl);
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static NamespaceDecl *CreateDeserialized(ASTContext &C, unsigned ID);
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typedef redeclarable_base::redecl_iterator redecl_iterator;
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using redeclarable_base::redecls_begin;
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using redeclarable_base::redecls_end;
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using redeclarable_base::getPreviousDecl;
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using redeclarable_base::getMostRecentDecl;
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/// \brief Returns true if this is an anonymous namespace declaration.
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///
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/// For example:
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/// \code
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/// namespace {
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/// ...
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/// };
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/// \endcode
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/// q.v. C++ [namespace.unnamed]
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bool isAnonymousNamespace() const {
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return !getIdentifier();
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}
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/// \brief Returns true if this is an inline namespace declaration.
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bool isInline() const {
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return AnonOrFirstNamespaceAndInline.getInt();
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}
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/// \brief Set whether this is an inline namespace declaration.
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void setInline(bool Inline) {
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AnonOrFirstNamespaceAndInline.setInt(Inline);
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}
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/// \brief Get the original (first) namespace declaration.
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NamespaceDecl *getOriginalNamespace() {
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if (isFirstDeclaration())
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return this;
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return AnonOrFirstNamespaceAndInline.getPointer();
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}
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/// \brief Get the original (first) namespace declaration.
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const NamespaceDecl *getOriginalNamespace() const {
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if (isFirstDeclaration())
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return this;
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return AnonOrFirstNamespaceAndInline.getPointer();
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}
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/// \brief Return true if this declaration is an original (first) declaration
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/// of the namespace. This is false for non-original (subsequent) namespace
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/// declarations and anonymous namespaces.
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bool isOriginalNamespace() const {
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return isFirstDeclaration();
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}
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/// \brief Retrieve the anonymous namespace nested inside this namespace,
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/// if any.
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NamespaceDecl *getAnonymousNamespace() const {
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return getOriginalNamespace()->AnonOrFirstNamespaceAndInline.getPointer();
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}
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void setAnonymousNamespace(NamespaceDecl *D) {
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getOriginalNamespace()->AnonOrFirstNamespaceAndInline.setPointer(D);
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}
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/// Retrieves the canonical declaration of this namespace.
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NamespaceDecl *getCanonicalDecl() {
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return getOriginalNamespace();
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}
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const NamespaceDecl *getCanonicalDecl() const {
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return getOriginalNamespace();
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}
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virtual SourceRange getSourceRange() const LLVM_READONLY {
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return SourceRange(LocStart, RBraceLoc);
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}
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SourceLocation getLocStart() const LLVM_READONLY { return LocStart; }
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SourceLocation getRBraceLoc() const { return RBraceLoc; }
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void setLocStart(SourceLocation L) { LocStart = L; }
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void setRBraceLoc(SourceLocation L) { RBraceLoc = L; }
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// Implement isa/cast/dyncast/etc.
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static bool classof(const Decl *D) { return classofKind(D->getKind()); }
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static bool classofKind(Kind K) { return K == Namespace; }
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static DeclContext *castToDeclContext(const NamespaceDecl *D) {
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return static_cast<DeclContext *>(const_cast<NamespaceDecl*>(D));
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}
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static NamespaceDecl *castFromDeclContext(const DeclContext *DC) {
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return static_cast<NamespaceDecl *>(const_cast<DeclContext*>(DC));
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}
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friend class ASTDeclReader;
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friend class ASTDeclWriter;
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};
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/// ValueDecl - Represent the declaration of a variable (in which case it is
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/// an lvalue) a function (in which case it is a function designator) or
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/// an enum constant.
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class ValueDecl : public NamedDecl {
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virtual void anchor();
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QualType DeclType;
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protected:
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ValueDecl(Kind DK, DeclContext *DC, SourceLocation L,
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DeclarationName N, QualType T)
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: NamedDecl(DK, DC, L, N), DeclType(T) {}
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public:
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QualType getType() const { return DeclType; }
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void setType(QualType newType) { DeclType = newType; }
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/// \brief Determine whether this symbol is weakly-imported,
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/// or declared with the weak or weak-ref attr.
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bool isWeak() const;
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// Implement isa/cast/dyncast/etc.
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static bool classof(const Decl *D) { return classofKind(D->getKind()); }
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static bool classofKind(Kind K) { return K >= firstValue && K <= lastValue; }
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};
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/// QualifierInfo - A struct with extended info about a syntactic
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/// name qualifier, to be used for the case of out-of-line declarations.
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struct QualifierInfo {
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NestedNameSpecifierLoc QualifierLoc;
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/// NumTemplParamLists - The number of "outer" template parameter lists.
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/// The count includes all of the template parameter lists that were matched
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/// against the template-ids occurring into the NNS and possibly (in the
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/// case of an explicit specialization) a final "template <>".
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unsigned NumTemplParamLists;
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/// TemplParamLists - A new-allocated array of size NumTemplParamLists,
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/// containing pointers to the "outer" template parameter lists.
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/// It includes all of the template parameter lists that were matched
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/// against the template-ids occurring into the NNS and possibly (in the
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/// case of an explicit specialization) a final "template <>".
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TemplateParameterList** TemplParamLists;
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/// Default constructor.
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QualifierInfo() : QualifierLoc(), NumTemplParamLists(0), TemplParamLists(0) {}
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/// setTemplateParameterListsInfo - Sets info about "outer" template
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/// parameter lists.
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void setTemplateParameterListsInfo(ASTContext &Context,
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unsigned NumTPLists,
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TemplateParameterList **TPLists);
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private:
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// Copy constructor and copy assignment are disabled.
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QualifierInfo(const QualifierInfo&) LLVM_DELETED_FUNCTION;
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QualifierInfo& operator=(const QualifierInfo&) LLVM_DELETED_FUNCTION;
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};
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/// \brief Represents a ValueDecl that came out of a declarator.
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/// Contains type source information through TypeSourceInfo.
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class DeclaratorDecl : public ValueDecl {
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// A struct representing both a TInfo and a syntactic qualifier,
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// to be used for the (uncommon) case of out-of-line declarations.
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struct ExtInfo : public QualifierInfo {
|
|
TypeSourceInfo *TInfo;
|
|
};
|
|
|
|
llvm::PointerUnion<TypeSourceInfo*, ExtInfo*> DeclInfo;
|
|
|
|
/// InnerLocStart - The start of the source range for this declaration,
|
|
/// ignoring outer template declarations.
|
|
SourceLocation InnerLocStart;
|
|
|
|
bool hasExtInfo() const { return DeclInfo.is<ExtInfo*>(); }
|
|
ExtInfo *getExtInfo() { return DeclInfo.get<ExtInfo*>(); }
|
|
const ExtInfo *getExtInfo() const { return DeclInfo.get<ExtInfo*>(); }
|
|
|
|
protected:
|
|
DeclaratorDecl(Kind DK, DeclContext *DC, SourceLocation L,
|
|
DeclarationName N, QualType T, TypeSourceInfo *TInfo,
|
|
SourceLocation StartL)
|
|
: ValueDecl(DK, DC, L, N, T), DeclInfo(TInfo), InnerLocStart(StartL) {
|
|
}
|
|
|
|
public:
|
|
TypeSourceInfo *getTypeSourceInfo() const {
|
|
return hasExtInfo()
|
|
? getExtInfo()->TInfo
|
|
: DeclInfo.get<TypeSourceInfo*>();
|
|
}
|
|
void setTypeSourceInfo(TypeSourceInfo *TI) {
|
|
if (hasExtInfo())
|
|
getExtInfo()->TInfo = TI;
|
|
else
|
|
DeclInfo = TI;
|
|
}
|
|
|
|
/// getInnerLocStart - Return SourceLocation representing start of source
|
|
/// range ignoring outer template declarations.
|
|
SourceLocation getInnerLocStart() const { return InnerLocStart; }
|
|
void setInnerLocStart(SourceLocation L) { InnerLocStart = L; }
|
|
|
|
/// getOuterLocStart - Return SourceLocation representing start of source
|
|
/// range taking into account any outer template declarations.
|
|
SourceLocation getOuterLocStart() const;
|
|
|
|
virtual SourceRange getSourceRange() const LLVM_READONLY;
|
|
SourceLocation getLocStart() const LLVM_READONLY {
|
|
return getOuterLocStart();
|
|
}
|
|
|
|
/// \brief Retrieve the nested-name-specifier that qualifies the name of this
|
|
/// declaration, if it was present in the source.
|
|
NestedNameSpecifier *getQualifier() const {
|
|
return hasExtInfo() ? getExtInfo()->QualifierLoc.getNestedNameSpecifier()
|
|
: 0;
|
|
}
|
|
|
|
/// \brief Retrieve the nested-name-specifier (with source-location
|
|
/// information) that qualifies the name of this declaration, if it was
|
|
/// present in the source.
|
|
NestedNameSpecifierLoc getQualifierLoc() const {
|
|
return hasExtInfo() ? getExtInfo()->QualifierLoc
|
|
: NestedNameSpecifierLoc();
|
|
}
|
|
|
|
void setQualifierInfo(NestedNameSpecifierLoc QualifierLoc);
|
|
|
|
unsigned getNumTemplateParameterLists() const {
|
|
return hasExtInfo() ? getExtInfo()->NumTemplParamLists : 0;
|
|
}
|
|
TemplateParameterList *getTemplateParameterList(unsigned index) const {
|
|
assert(index < getNumTemplateParameterLists());
|
|
return getExtInfo()->TemplParamLists[index];
|
|
}
|
|
void setTemplateParameterListsInfo(ASTContext &Context, unsigned NumTPLists,
|
|
TemplateParameterList **TPLists);
|
|
|
|
SourceLocation getTypeSpecStartLoc() const;
|
|
|
|
// Implement isa/cast/dyncast/etc.
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) {
|
|
return K >= firstDeclarator && K <= lastDeclarator;
|
|
}
|
|
|
|
friend class ASTDeclReader;
|
|
friend class ASTDeclWriter;
|
|
};
|
|
|
|
/// \brief Structure used to store a statement, the constant value to
|
|
/// which it was evaluated (if any), and whether or not the statement
|
|
/// is an integral constant expression (if known).
|
|
struct EvaluatedStmt {
|
|
EvaluatedStmt() : WasEvaluated(false), IsEvaluating(false), CheckedICE(false),
|
|
CheckingICE(false), IsICE(false) { }
|
|
|
|
/// \brief Whether this statement was already evaluated.
|
|
bool WasEvaluated : 1;
|
|
|
|
/// \brief Whether this statement is being evaluated.
|
|
bool IsEvaluating : 1;
|
|
|
|
/// \brief Whether we already checked whether this statement was an
|
|
/// integral constant expression.
|
|
bool CheckedICE : 1;
|
|
|
|
/// \brief Whether we are checking whether this statement is an
|
|
/// integral constant expression.
|
|
bool CheckingICE : 1;
|
|
|
|
/// \brief Whether this statement is an integral constant expression,
|
|
/// or in C++11, whether the statement is a constant expression. Only
|
|
/// valid if CheckedICE is true.
|
|
bool IsICE : 1;
|
|
|
|
Stmt *Value;
|
|
APValue Evaluated;
|
|
};
|
|
|
|
/// VarDecl - An instance of this class is created to represent a variable
|
|
/// declaration or definition.
|
|
class VarDecl : public DeclaratorDecl, public Redeclarable<VarDecl> {
|
|
public:
|
|
typedef clang::StorageClass StorageClass;
|
|
|
|
/// getStorageClassSpecifierString - Return the string used to
|
|
/// specify the storage class \p SC.
|
|
///
|
|
/// It is illegal to call this function with SC == None.
|
|
static const char *getStorageClassSpecifierString(StorageClass SC);
|
|
|
|
/// \brief Initialization styles.
|
|
enum InitializationStyle {
|
|
CInit, ///< C-style initialization with assignment
|
|
CallInit, ///< Call-style initialization (C++98)
|
|
ListInit ///< Direct list-initialization (C++11)
|
|
};
|
|
|
|
/// \brief Kinds of thread-local storage.
|
|
enum TLSKind {
|
|
TLS_None, ///< Not a TLS variable.
|
|
TLS_Static, ///< TLS with a known-constant initializer.
|
|
TLS_Dynamic ///< TLS with a dynamic initializer.
|
|
};
|
|
|
|
protected:
|
|
/// \brief Placeholder type used in Init to denote an unparsed C++ default
|
|
/// argument.
|
|
struct UnparsedDefaultArgument;
|
|
|
|
/// \brief Placeholder type used in Init to denote an uninstantiated C++
|
|
/// default argument.
|
|
struct UninstantiatedDefaultArgument;
|
|
|
|
typedef llvm::PointerUnion4<Stmt *, EvaluatedStmt *,
|
|
UnparsedDefaultArgument *,
|
|
UninstantiatedDefaultArgument *> InitType;
|
|
|
|
/// \brief The initializer for this variable or, for a ParmVarDecl, the
|
|
/// C++ default argument.
|
|
mutable InitType Init;
|
|
|
|
private:
|
|
class VarDeclBitfields {
|
|
friend class VarDecl;
|
|
friend class ASTDeclReader;
|
|
|
|
unsigned SClass : 3;
|
|
unsigned TLSKind : 2;
|
|
unsigned InitStyle : 2;
|
|
|
|
/// \brief Whether this variable is the exception variable in a C++ catch
|
|
/// or an Objective-C @catch statement.
|
|
unsigned ExceptionVar : 1;
|
|
|
|
/// \brief Whether this local variable could be allocated in the return
|
|
/// slot of its function, enabling the named return value optimization
|
|
/// (NRVO).
|
|
unsigned NRVOVariable : 1;
|
|
|
|
/// \brief Whether this variable is the for-range-declaration in a C++0x
|
|
/// for-range statement.
|
|
unsigned CXXForRangeDecl : 1;
|
|
|
|
/// \brief Whether this variable is an ARC pseudo-__strong
|
|
/// variable; see isARCPseudoStrong() for details.
|
|
unsigned ARCPseudoStrong : 1;
|
|
|
|
/// \brief Whether this variable is (C++0x) constexpr.
|
|
unsigned IsConstexpr : 1;
|
|
};
|
|
enum { NumVarDeclBits = 12 };
|
|
|
|
friend class ASTDeclReader;
|
|
friend class StmtIteratorBase;
|
|
|
|
protected:
|
|
enum { NumParameterIndexBits = 8 };
|
|
|
|
class ParmVarDeclBitfields {
|
|
friend class ParmVarDecl;
|
|
friend class ASTDeclReader;
|
|
|
|
unsigned : NumVarDeclBits;
|
|
|
|
/// Whether this parameter inherits a default argument from a
|
|
/// prior declaration.
|
|
unsigned HasInheritedDefaultArg : 1;
|
|
|
|
/// Whether this parameter undergoes K&R argument promotion.
|
|
unsigned IsKNRPromoted : 1;
|
|
|
|
/// Whether this parameter is an ObjC method parameter or not.
|
|
unsigned IsObjCMethodParam : 1;
|
|
|
|
/// If IsObjCMethodParam, a Decl::ObjCDeclQualifier.
|
|
/// Otherwise, the number of function parameter scopes enclosing
|
|
/// the function parameter scope in which this parameter was
|
|
/// declared.
|
|
unsigned ScopeDepthOrObjCQuals : 7;
|
|
|
|
/// The number of parameters preceding this parameter in the
|
|
/// function parameter scope in which it was declared.
|
|
unsigned ParameterIndex : NumParameterIndexBits;
|
|
};
|
|
|
|
union {
|
|
unsigned AllBits;
|
|
VarDeclBitfields VarDeclBits;
|
|
ParmVarDeclBitfields ParmVarDeclBits;
|
|
};
|
|
|
|
VarDecl(Kind DK, DeclContext *DC, SourceLocation StartLoc,
|
|
SourceLocation IdLoc, IdentifierInfo *Id,
|
|
QualType T, TypeSourceInfo *TInfo, StorageClass SC)
|
|
: DeclaratorDecl(DK, DC, IdLoc, Id, T, TInfo, StartLoc), Init() {
|
|
assert(sizeof(VarDeclBitfields) <= sizeof(unsigned));
|
|
assert(sizeof(ParmVarDeclBitfields) <= sizeof(unsigned));
|
|
AllBits = 0;
|
|
VarDeclBits.SClass = SC;
|
|
// Everything else is implicitly initialized to false.
|
|
}
|
|
|
|
typedef Redeclarable<VarDecl> redeclarable_base;
|
|
virtual VarDecl *getNextRedeclaration() { return RedeclLink.getNext(); }
|
|
virtual VarDecl *getPreviousDeclImpl() {
|
|
return getPreviousDecl();
|
|
}
|
|
virtual VarDecl *getMostRecentDeclImpl() {
|
|
return getMostRecentDecl();
|
|
}
|
|
|
|
public:
|
|
typedef redeclarable_base::redecl_iterator redecl_iterator;
|
|
using redeclarable_base::redecls_begin;
|
|
using redeclarable_base::redecls_end;
|
|
using redeclarable_base::getPreviousDecl;
|
|
using redeclarable_base::getMostRecentDecl;
|
|
|
|
static VarDecl *Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation StartLoc, SourceLocation IdLoc,
|
|
IdentifierInfo *Id, QualType T, TypeSourceInfo *TInfo,
|
|
StorageClass S);
|
|
|
|
static VarDecl *CreateDeserialized(ASTContext &C, unsigned ID);
|
|
|
|
virtual SourceRange getSourceRange() const LLVM_READONLY;
|
|
|
|
/// \brief Returns the storage class as written in the source. For the
|
|
/// computed linkage of symbol, see getLinkage.
|
|
StorageClass getStorageClass() const {
|
|
return (StorageClass) VarDeclBits.SClass;
|
|
}
|
|
void setStorageClass(StorageClass SC);
|
|
|
|
void setTLSKind(TLSKind TLS) { VarDeclBits.TLSKind = TLS; }
|
|
TLSKind getTLSKind() const {
|
|
return static_cast<TLSKind>(VarDeclBits.TLSKind);
|
|
}
|
|
|
|
/// hasLocalStorage - Returns true if a variable with function scope
|
|
/// is a non-static local variable.
|
|
bool hasLocalStorage() const {
|
|
if (getStorageClass() == SC_None)
|
|
return !isFileVarDecl();
|
|
|
|
// Return true for: Auto, Register.
|
|
// Return false for: Extern, Static, PrivateExtern, OpenCLWorkGroupLocal.
|
|
|
|
return getStorageClass() >= SC_Auto;
|
|
}
|
|
|
|
/// isStaticLocal - Returns true if a variable with function scope is a
|
|
/// static local variable.
|
|
bool isStaticLocal() const {
|
|
return getStorageClass() == SC_Static && !isFileVarDecl();
|
|
}
|
|
|
|
/// \brief Returns true if a variable has extern or __private_extern__
|
|
/// storage.
|
|
bool hasExternalStorage() const {
|
|
return getStorageClass() == SC_Extern ||
|
|
getStorageClass() == SC_PrivateExtern;
|
|
}
|
|
|
|
/// hasGlobalStorage - Returns true for all variables that do not
|
|
/// have local storage. This includs all global variables as well
|
|
/// as static variables declared within a function.
|
|
bool hasGlobalStorage() const { return !hasLocalStorage(); }
|
|
|
|
/// Compute the language linkage.
|
|
LanguageLinkage getLanguageLinkage() const;
|
|
|
|
/// \brief Determines whether this variable is a variable with
|
|
/// external, C linkage.
|
|
bool isExternC() const;
|
|
|
|
/// isLocalVarDecl - Returns true for local variable declarations
|
|
/// other than parameters. Note that this includes static variables
|
|
/// inside of functions. It also includes variables inside blocks.
|
|
///
|
|
/// void foo() { int x; static int y; extern int z; }
|
|
///
|
|
bool isLocalVarDecl() const {
|
|
if (getKind() != Decl::Var)
|
|
return false;
|
|
if (const DeclContext *DC = getDeclContext())
|
|
return DC->getRedeclContext()->isFunctionOrMethod();
|
|
return false;
|
|
}
|
|
|
|
/// isFunctionOrMethodVarDecl - Similar to isLocalVarDecl, but
|
|
/// excludes variables declared in blocks.
|
|
bool isFunctionOrMethodVarDecl() const {
|
|
if (getKind() != Decl::Var)
|
|
return false;
|
|
const DeclContext *DC = getDeclContext()->getRedeclContext();
|
|
return DC->isFunctionOrMethod() && DC->getDeclKind() != Decl::Block;
|
|
}
|
|
|
|
/// \brief Determines whether this is a static data member.
|
|
///
|
|
/// This will only be true in C++, and applies to, e.g., the
|
|
/// variable 'x' in:
|
|
/// \code
|
|
/// struct S {
|
|
/// static int x;
|
|
/// };
|
|
/// \endcode
|
|
bool isStaticDataMember() const {
|
|
// If it wasn't static, it would be a FieldDecl.
|
|
return getKind() != Decl::ParmVar && getDeclContext()->isRecord();
|
|
}
|
|
|
|
virtual VarDecl *getCanonicalDecl();
|
|
const VarDecl *getCanonicalDecl() const {
|
|
return const_cast<VarDecl*>(this)->getCanonicalDecl();
|
|
}
|
|
|
|
enum DefinitionKind {
|
|
DeclarationOnly, ///< This declaration is only a declaration.
|
|
TentativeDefinition, ///< This declaration is a tentative definition.
|
|
Definition ///< This declaration is definitely a definition.
|
|
};
|
|
|
|
/// \brief Check whether this declaration is a definition. If this could be
|
|
/// a tentative definition (in C), don't check whether there's an overriding
|
|
/// definition.
|
|
DefinitionKind isThisDeclarationADefinition(ASTContext &) const;
|
|
DefinitionKind isThisDeclarationADefinition() const {
|
|
return isThisDeclarationADefinition(getASTContext());
|
|
}
|
|
|
|
/// \brief Check whether this variable is defined in this
|
|
/// translation unit.
|
|
DefinitionKind hasDefinition(ASTContext &) const;
|
|
DefinitionKind hasDefinition() const {
|
|
return hasDefinition(getASTContext());
|
|
}
|
|
|
|
/// \brief Get the tentative definition that acts as the real definition in
|
|
/// a TU. Returns null if there is a proper definition available.
|
|
VarDecl *getActingDefinition();
|
|
const VarDecl *getActingDefinition() const {
|
|
return const_cast<VarDecl*>(this)->getActingDefinition();
|
|
}
|
|
|
|
/// \brief Determine whether this is a tentative definition of a
|
|
/// variable in C.
|
|
bool isTentativeDefinitionNow() const;
|
|
|
|
/// \brief Get the real (not just tentative) definition for this declaration.
|
|
VarDecl *getDefinition(ASTContext &);
|
|
const VarDecl *getDefinition(ASTContext &C) const {
|
|
return const_cast<VarDecl*>(this)->getDefinition(C);
|
|
}
|
|
VarDecl *getDefinition() {
|
|
return getDefinition(getASTContext());
|
|
}
|
|
const VarDecl *getDefinition() const {
|
|
return const_cast<VarDecl*>(this)->getDefinition();
|
|
}
|
|
|
|
/// \brief Determine whether this is or was instantiated from an out-of-line
|
|
/// definition of a static data member.
|
|
virtual bool isOutOfLine() const;
|
|
|
|
/// \brief If this is a static data member, find its out-of-line definition.
|
|
VarDecl *getOutOfLineDefinition();
|
|
|
|
/// isFileVarDecl - Returns true for file scoped variable declaration.
|
|
bool isFileVarDecl() const {
|
|
if (getKind() != Decl::Var)
|
|
return false;
|
|
|
|
if (getDeclContext()->getRedeclContext()->isFileContext())
|
|
return true;
|
|
|
|
if (isStaticDataMember())
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/// getAnyInitializer - Get the initializer for this variable, no matter which
|
|
/// declaration it is attached to.
|
|
const Expr *getAnyInitializer() const {
|
|
const VarDecl *D;
|
|
return getAnyInitializer(D);
|
|
}
|
|
|
|
/// getAnyInitializer - Get the initializer for this variable, no matter which
|
|
/// declaration it is attached to. Also get that declaration.
|
|
const Expr *getAnyInitializer(const VarDecl *&D) const;
|
|
|
|
bool hasInit() const {
|
|
return !Init.isNull() && (Init.is<Stmt *>() || Init.is<EvaluatedStmt *>());
|
|
}
|
|
const Expr *getInit() const {
|
|
if (Init.isNull())
|
|
return 0;
|
|
|
|
const Stmt *S = Init.dyn_cast<Stmt *>();
|
|
if (!S) {
|
|
if (EvaluatedStmt *ES = Init.dyn_cast<EvaluatedStmt*>())
|
|
S = ES->Value;
|
|
}
|
|
return (const Expr*) S;
|
|
}
|
|
Expr *getInit() {
|
|
if (Init.isNull())
|
|
return 0;
|
|
|
|
Stmt *S = Init.dyn_cast<Stmt *>();
|
|
if (!S) {
|
|
if (EvaluatedStmt *ES = Init.dyn_cast<EvaluatedStmt*>())
|
|
S = ES->Value;
|
|
}
|
|
|
|
return (Expr*) S;
|
|
}
|
|
|
|
/// \brief Retrieve the address of the initializer expression.
|
|
Stmt **getInitAddress() {
|
|
if (EvaluatedStmt *ES = Init.dyn_cast<EvaluatedStmt*>())
|
|
return &ES->Value;
|
|
|
|
// This union hack tip-toes around strict-aliasing rules.
|
|
union {
|
|
InitType *InitPtr;
|
|
Stmt **StmtPtr;
|
|
};
|
|
|
|
InitPtr = &Init;
|
|
return StmtPtr;
|
|
}
|
|
|
|
void setInit(Expr *I);
|
|
|
|
/// \brief Determine whether this variable is a reference that
|
|
/// extends the lifetime of its temporary initializer.
|
|
///
|
|
/// A reference extends the lifetime of its temporary initializer if
|
|
/// it's initializer is an rvalue that would normally go out of scope
|
|
/// at the end of the initializer (a full expression). In such cases,
|
|
/// the reference itself takes ownership of the temporary, which will
|
|
/// be destroyed when the reference goes out of scope. For example:
|
|
///
|
|
/// \code
|
|
/// const int &r = 1.0; // creates a temporary of type 'int'
|
|
/// \endcode
|
|
bool extendsLifetimeOfTemporary() const;
|
|
|
|
/// \brief Determine whether this variable's value can be used in a
|
|
/// constant expression, according to the relevant language standard.
|
|
/// This only checks properties of the declaration, and does not check
|
|
/// whether the initializer is in fact a constant expression.
|
|
bool isUsableInConstantExpressions(ASTContext &C) const;
|
|
|
|
EvaluatedStmt *ensureEvaluatedStmt() const;
|
|
|
|
/// \brief Attempt to evaluate the value of the initializer attached to this
|
|
/// declaration, and produce notes explaining why it cannot be evaluated or is
|
|
/// not a constant expression. Returns a pointer to the value if evaluation
|
|
/// succeeded, 0 otherwise.
|
|
APValue *evaluateValue() const;
|
|
APValue *evaluateValue(SmallVectorImpl<PartialDiagnosticAt> &Notes) const;
|
|
|
|
/// \brief Return the already-evaluated value of this variable's
|
|
/// initializer, or NULL if the value is not yet known. Returns pointer
|
|
/// to untyped APValue if the value could not be evaluated.
|
|
APValue *getEvaluatedValue() const {
|
|
if (EvaluatedStmt *Eval = Init.dyn_cast<EvaluatedStmt *>())
|
|
if (Eval->WasEvaluated)
|
|
return &Eval->Evaluated;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/// \brief Determines whether it is already known whether the
|
|
/// initializer is an integral constant expression or not.
|
|
bool isInitKnownICE() const {
|
|
if (EvaluatedStmt *Eval = Init.dyn_cast<EvaluatedStmt *>())
|
|
return Eval->CheckedICE;
|
|
|
|
return false;
|
|
}
|
|
|
|
/// \brief Determines whether the initializer is an integral constant
|
|
/// expression, or in C++11, whether the initializer is a constant
|
|
/// expression.
|
|
///
|
|
/// \pre isInitKnownICE()
|
|
bool isInitICE() const {
|
|
assert(isInitKnownICE() &&
|
|
"Check whether we already know that the initializer is an ICE");
|
|
return Init.get<EvaluatedStmt *>()->IsICE;
|
|
}
|
|
|
|
/// \brief Determine whether the value of the initializer attached to this
|
|
/// declaration is an integral constant expression.
|
|
bool checkInitIsICE() const;
|
|
|
|
void setInitStyle(InitializationStyle Style) {
|
|
VarDeclBits.InitStyle = Style;
|
|
}
|
|
|
|
/// \brief The style of initialization for this declaration.
|
|
///
|
|
/// C-style initialization is "int x = 1;". Call-style initialization is
|
|
/// a C++98 direct-initializer, e.g. "int x(1);". The Init expression will be
|
|
/// the expression inside the parens or a "ClassType(a,b,c)" class constructor
|
|
/// expression for class types. List-style initialization is C++11 syntax,
|
|
/// e.g. "int x{1};". Clients can distinguish between different forms of
|
|
/// initialization by checking this value. In particular, "int x = {1};" is
|
|
/// C-style, "int x({1})" is call-style, and "int x{1};" is list-style; the
|
|
/// Init expression in all three cases is an InitListExpr.
|
|
InitializationStyle getInitStyle() const {
|
|
return static_cast<InitializationStyle>(VarDeclBits.InitStyle);
|
|
}
|
|
|
|
/// \brief Whether the initializer is a direct-initializer (list or call).
|
|
bool isDirectInit() const {
|
|
return getInitStyle() != CInit;
|
|
}
|
|
|
|
/// \brief Determine whether this variable is the exception variable in a
|
|
/// C++ catch statememt or an Objective-C \@catch statement.
|
|
bool isExceptionVariable() const {
|
|
return VarDeclBits.ExceptionVar;
|
|
}
|
|
void setExceptionVariable(bool EV) { VarDeclBits.ExceptionVar = EV; }
|
|
|
|
/// \brief Determine whether this local variable can be used with the named
|
|
/// return value optimization (NRVO).
|
|
///
|
|
/// The named return value optimization (NRVO) works by marking certain
|
|
/// non-volatile local variables of class type as NRVO objects. These
|
|
/// locals can be allocated within the return slot of their containing
|
|
/// function, in which case there is no need to copy the object to the
|
|
/// return slot when returning from the function. Within the function body,
|
|
/// each return that returns the NRVO object will have this variable as its
|
|
/// NRVO candidate.
|
|
bool isNRVOVariable() const { return VarDeclBits.NRVOVariable; }
|
|
void setNRVOVariable(bool NRVO) { VarDeclBits.NRVOVariable = NRVO; }
|
|
|
|
/// \brief Determine whether this variable is the for-range-declaration in
|
|
/// a C++0x for-range statement.
|
|
bool isCXXForRangeDecl() const { return VarDeclBits.CXXForRangeDecl; }
|
|
void setCXXForRangeDecl(bool FRD) { VarDeclBits.CXXForRangeDecl = FRD; }
|
|
|
|
/// \brief Determine whether this variable is an ARC pseudo-__strong
|
|
/// variable. A pseudo-__strong variable has a __strong-qualified
|
|
/// type but does not actually retain the object written into it.
|
|
/// Generally such variables are also 'const' for safety.
|
|
bool isARCPseudoStrong() const { return VarDeclBits.ARCPseudoStrong; }
|
|
void setARCPseudoStrong(bool ps) { VarDeclBits.ARCPseudoStrong = ps; }
|
|
|
|
/// Whether this variable is (C++11) constexpr.
|
|
bool isConstexpr() const { return VarDeclBits.IsConstexpr; }
|
|
void setConstexpr(bool IC) { VarDeclBits.IsConstexpr = IC; }
|
|
|
|
/// \brief If this variable is an instantiated static data member of a
|
|
/// class template specialization, returns the templated static data member
|
|
/// from which it was instantiated.
|
|
VarDecl *getInstantiatedFromStaticDataMember() const;
|
|
|
|
/// \brief If this variable is a static data member, determine what kind of
|
|
/// template specialization or instantiation this is.
|
|
TemplateSpecializationKind getTemplateSpecializationKind() const;
|
|
|
|
/// \brief If this variable is an instantiation of a static data member of a
|
|
/// class template specialization, retrieves the member specialization
|
|
/// information.
|
|
MemberSpecializationInfo *getMemberSpecializationInfo() const;
|
|
|
|
/// \brief For a static data member that was instantiated from a static
|
|
/// data member of a class template, set the template specialiation kind.
|
|
void setTemplateSpecializationKind(TemplateSpecializationKind TSK,
|
|
SourceLocation PointOfInstantiation = SourceLocation());
|
|
|
|
// Implement isa/cast/dyncast/etc.
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K >= firstVar && K <= lastVar; }
|
|
};
|
|
|
|
class ImplicitParamDecl : public VarDecl {
|
|
virtual void anchor();
|
|
public:
|
|
static ImplicitParamDecl *Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation IdLoc, IdentifierInfo *Id,
|
|
QualType T);
|
|
|
|
static ImplicitParamDecl *CreateDeserialized(ASTContext &C, unsigned ID);
|
|
|
|
ImplicitParamDecl(DeclContext *DC, SourceLocation IdLoc,
|
|
IdentifierInfo *Id, QualType Type)
|
|
: VarDecl(ImplicitParam, DC, IdLoc, IdLoc, Id, Type,
|
|
/*tinfo*/ 0, SC_None) {
|
|
setImplicit();
|
|
}
|
|
|
|
// Implement isa/cast/dyncast/etc.
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K == ImplicitParam; }
|
|
};
|
|
|
|
/// ParmVarDecl - Represents a parameter to a function.
|
|
class ParmVarDecl : public VarDecl {
|
|
public:
|
|
enum { MaxFunctionScopeDepth = 255 };
|
|
enum { MaxFunctionScopeIndex = 255 };
|
|
|
|
protected:
|
|
ParmVarDecl(Kind DK, DeclContext *DC, SourceLocation StartLoc,
|
|
SourceLocation IdLoc, IdentifierInfo *Id,
|
|
QualType T, TypeSourceInfo *TInfo,
|
|
StorageClass S, Expr *DefArg)
|
|
: VarDecl(DK, DC, StartLoc, IdLoc, Id, T, TInfo, S) {
|
|
assert(ParmVarDeclBits.HasInheritedDefaultArg == false);
|
|
assert(ParmVarDeclBits.IsKNRPromoted == false);
|
|
assert(ParmVarDeclBits.IsObjCMethodParam == false);
|
|
setDefaultArg(DefArg);
|
|
}
|
|
|
|
public:
|
|
static ParmVarDecl *Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation StartLoc,
|
|
SourceLocation IdLoc, IdentifierInfo *Id,
|
|
QualType T, TypeSourceInfo *TInfo,
|
|
StorageClass S, Expr *DefArg);
|
|
|
|
static ParmVarDecl *CreateDeserialized(ASTContext &C, unsigned ID);
|
|
|
|
virtual SourceRange getSourceRange() const LLVM_READONLY;
|
|
|
|
void setObjCMethodScopeInfo(unsigned parameterIndex) {
|
|
ParmVarDeclBits.IsObjCMethodParam = true;
|
|
setParameterIndex(parameterIndex);
|
|
}
|
|
|
|
void setScopeInfo(unsigned scopeDepth, unsigned parameterIndex) {
|
|
assert(!ParmVarDeclBits.IsObjCMethodParam);
|
|
|
|
ParmVarDeclBits.ScopeDepthOrObjCQuals = scopeDepth;
|
|
assert(ParmVarDeclBits.ScopeDepthOrObjCQuals == scopeDepth
|
|
&& "truncation!");
|
|
|
|
setParameterIndex(parameterIndex);
|
|
}
|
|
|
|
bool isObjCMethodParameter() const {
|
|
return ParmVarDeclBits.IsObjCMethodParam;
|
|
}
|
|
|
|
unsigned getFunctionScopeDepth() const {
|
|
if (ParmVarDeclBits.IsObjCMethodParam) return 0;
|
|
return ParmVarDeclBits.ScopeDepthOrObjCQuals;
|
|
}
|
|
|
|
/// Returns the index of this parameter in its prototype or method scope.
|
|
unsigned getFunctionScopeIndex() const {
|
|
return getParameterIndex();
|
|
}
|
|
|
|
ObjCDeclQualifier getObjCDeclQualifier() const {
|
|
if (!ParmVarDeclBits.IsObjCMethodParam) return OBJC_TQ_None;
|
|
return ObjCDeclQualifier(ParmVarDeclBits.ScopeDepthOrObjCQuals);
|
|
}
|
|
void setObjCDeclQualifier(ObjCDeclQualifier QTVal) {
|
|
assert(ParmVarDeclBits.IsObjCMethodParam);
|
|
ParmVarDeclBits.ScopeDepthOrObjCQuals = QTVal;
|
|
}
|
|
|
|
/// True if the value passed to this parameter must undergo
|
|
/// K&R-style default argument promotion:
|
|
///
|
|
/// C99 6.5.2.2.
|
|
/// If the expression that denotes the called function has a type
|
|
/// that does not include a prototype, the integer promotions are
|
|
/// performed on each argument, and arguments that have type float
|
|
/// are promoted to double.
|
|
bool isKNRPromoted() const {
|
|
return ParmVarDeclBits.IsKNRPromoted;
|
|
}
|
|
void setKNRPromoted(bool promoted) {
|
|
ParmVarDeclBits.IsKNRPromoted = promoted;
|
|
}
|
|
|
|
Expr *getDefaultArg();
|
|
const Expr *getDefaultArg() const {
|
|
return const_cast<ParmVarDecl *>(this)->getDefaultArg();
|
|
}
|
|
|
|
void setDefaultArg(Expr *defarg) {
|
|
Init = reinterpret_cast<Stmt *>(defarg);
|
|
}
|
|
|
|
/// \brief Retrieve the source range that covers the entire default
|
|
/// argument.
|
|
SourceRange getDefaultArgRange() const;
|
|
void setUninstantiatedDefaultArg(Expr *arg) {
|
|
Init = reinterpret_cast<UninstantiatedDefaultArgument *>(arg);
|
|
}
|
|
Expr *getUninstantiatedDefaultArg() {
|
|
return (Expr *)Init.get<UninstantiatedDefaultArgument *>();
|
|
}
|
|
const Expr *getUninstantiatedDefaultArg() const {
|
|
return (const Expr *)Init.get<UninstantiatedDefaultArgument *>();
|
|
}
|
|
|
|
/// hasDefaultArg - Determines whether this parameter has a default argument,
|
|
/// either parsed or not.
|
|
bool hasDefaultArg() const {
|
|
return getInit() || hasUnparsedDefaultArg() ||
|
|
hasUninstantiatedDefaultArg();
|
|
}
|
|
|
|
/// hasUnparsedDefaultArg - Determines whether this parameter has a
|
|
/// default argument that has not yet been parsed. This will occur
|
|
/// during the processing of a C++ class whose member functions have
|
|
/// default arguments, e.g.,
|
|
/// @code
|
|
/// class X {
|
|
/// public:
|
|
/// void f(int x = 17); // x has an unparsed default argument now
|
|
/// }; // x has a regular default argument now
|
|
/// @endcode
|
|
bool hasUnparsedDefaultArg() const {
|
|
return Init.is<UnparsedDefaultArgument*>();
|
|
}
|
|
|
|
bool hasUninstantiatedDefaultArg() const {
|
|
return Init.is<UninstantiatedDefaultArgument*>();
|
|
}
|
|
|
|
/// setUnparsedDefaultArg - Specify that this parameter has an
|
|
/// unparsed default argument. The argument will be replaced with a
|
|
/// real default argument via setDefaultArg when the class
|
|
/// definition enclosing the function declaration that owns this
|
|
/// default argument is completed.
|
|
void setUnparsedDefaultArg() {
|
|
Init = (UnparsedDefaultArgument *)0;
|
|
}
|
|
|
|
bool hasInheritedDefaultArg() const {
|
|
return ParmVarDeclBits.HasInheritedDefaultArg;
|
|
}
|
|
|
|
void setHasInheritedDefaultArg(bool I = true) {
|
|
ParmVarDeclBits.HasInheritedDefaultArg = I;
|
|
}
|
|
|
|
QualType getOriginalType() const {
|
|
if (getTypeSourceInfo())
|
|
return getTypeSourceInfo()->getType();
|
|
return getType();
|
|
}
|
|
|
|
/// \brief Determine whether this parameter is actually a function
|
|
/// parameter pack.
|
|
bool isParameterPack() const;
|
|
|
|
/// setOwningFunction - Sets the function declaration that owns this
|
|
/// ParmVarDecl. Since ParmVarDecls are often created before the
|
|
/// FunctionDecls that own them, this routine is required to update
|
|
/// the DeclContext appropriately.
|
|
void setOwningFunction(DeclContext *FD) { setDeclContext(FD); }
|
|
|
|
// Implement isa/cast/dyncast/etc.
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K == ParmVar; }
|
|
|
|
private:
|
|
enum { ParameterIndexSentinel = (1 << NumParameterIndexBits) - 1 };
|
|
|
|
void setParameterIndex(unsigned parameterIndex) {
|
|
if (parameterIndex >= ParameterIndexSentinel) {
|
|
setParameterIndexLarge(parameterIndex);
|
|
return;
|
|
}
|
|
|
|
ParmVarDeclBits.ParameterIndex = parameterIndex;
|
|
assert(ParmVarDeclBits.ParameterIndex == parameterIndex && "truncation!");
|
|
}
|
|
unsigned getParameterIndex() const {
|
|
unsigned d = ParmVarDeclBits.ParameterIndex;
|
|
return d == ParameterIndexSentinel ? getParameterIndexLarge() : d;
|
|
}
|
|
|
|
void setParameterIndexLarge(unsigned parameterIndex);
|
|
unsigned getParameterIndexLarge() const;
|
|
};
|
|
|
|
/// FunctionDecl - An instance of this class is created to represent a
|
|
/// function declaration or definition.
|
|
///
|
|
/// Since a given function can be declared several times in a program,
|
|
/// there may be several FunctionDecls that correspond to that
|
|
/// function. Only one of those FunctionDecls will be found when
|
|
/// traversing the list of declarations in the context of the
|
|
/// FunctionDecl (e.g., the translation unit); this FunctionDecl
|
|
/// contains all of the information known about the function. Other,
|
|
/// previous declarations of the function are available via the
|
|
/// getPreviousDecl() chain.
|
|
class FunctionDecl : public DeclaratorDecl, public DeclContext,
|
|
public Redeclarable<FunctionDecl> {
|
|
public:
|
|
typedef clang::StorageClass StorageClass;
|
|
|
|
/// \brief The kind of templated function a FunctionDecl can be.
|
|
enum TemplatedKind {
|
|
TK_NonTemplate,
|
|
TK_FunctionTemplate,
|
|
TK_MemberSpecialization,
|
|
TK_FunctionTemplateSpecialization,
|
|
TK_DependentFunctionTemplateSpecialization
|
|
};
|
|
|
|
private:
|
|
/// ParamInfo - new[]'d array of pointers to VarDecls for the formal
|
|
/// parameters of this function. This is null if a prototype or if there are
|
|
/// no formals.
|
|
ParmVarDecl **ParamInfo;
|
|
|
|
/// DeclsInPrototypeScope - Array of pointers to NamedDecls for
|
|
/// decls defined in the function prototype that are not parameters. E.g.
|
|
/// 'enum Y' in 'void f(enum Y {AA} x) {}'.
|
|
ArrayRef<NamedDecl *> DeclsInPrototypeScope;
|
|
|
|
LazyDeclStmtPtr Body;
|
|
|
|
// FIXME: This can be packed into the bitfields in Decl.
|
|
// NOTE: VC++ treats enums as signed, avoid using the StorageClass enum
|
|
unsigned SClass : 2;
|
|
bool IsInline : 1;
|
|
bool IsInlineSpecified : 1;
|
|
bool IsVirtualAsWritten : 1;
|
|
bool IsPure : 1;
|
|
bool HasInheritedPrototype : 1;
|
|
bool HasWrittenPrototype : 1;
|
|
bool IsDeleted : 1;
|
|
bool IsTrivial : 1; // sunk from CXXMethodDecl
|
|
bool IsDefaulted : 1; // sunk from CXXMethoDecl
|
|
bool IsExplicitlyDefaulted : 1; //sunk from CXXMethodDecl
|
|
bool HasImplicitReturnZero : 1;
|
|
bool IsLateTemplateParsed : 1;
|
|
bool IsConstexpr : 1;
|
|
|
|
/// \brief Indicates if the function was a definition but its body was
|
|
/// skipped.
|
|
unsigned HasSkippedBody : 1;
|
|
|
|
/// \brief End part of this FunctionDecl's source range.
|
|
///
|
|
/// We could compute the full range in getSourceRange(). However, when we're
|
|
/// dealing with a function definition deserialized from a PCH/AST file,
|
|
/// we can only compute the full range once the function body has been
|
|
/// de-serialized, so it's far better to have the (sometimes-redundant)
|
|
/// EndRangeLoc.
|
|
SourceLocation EndRangeLoc;
|
|
|
|
/// \brief The template or declaration that this declaration
|
|
/// describes or was instantiated from, respectively.
|
|
///
|
|
/// For non-templates, this value will be NULL. For function
|
|
/// declarations that describe a function template, this will be a
|
|
/// pointer to a FunctionTemplateDecl. For member functions
|
|
/// of class template specializations, this will be a MemberSpecializationInfo
|
|
/// pointer containing information about the specialization.
|
|
/// For function template specializations, this will be a
|
|
/// FunctionTemplateSpecializationInfo, which contains information about
|
|
/// the template being specialized and the template arguments involved in
|
|
/// that specialization.
|
|
llvm::PointerUnion4<FunctionTemplateDecl *,
|
|
MemberSpecializationInfo *,
|
|
FunctionTemplateSpecializationInfo *,
|
|
DependentFunctionTemplateSpecializationInfo *>
|
|
TemplateOrSpecialization;
|
|
|
|
/// DNLoc - Provides source/type location info for the
|
|
/// declaration name embedded in the DeclaratorDecl base class.
|
|
DeclarationNameLoc DNLoc;
|
|
|
|
/// \brief Specify that this function declaration is actually a function
|
|
/// template specialization.
|
|
///
|
|
/// \param C the ASTContext.
|
|
///
|
|
/// \param Template the function template that this function template
|
|
/// specialization specializes.
|
|
///
|
|
/// \param TemplateArgs the template arguments that produced this
|
|
/// function template specialization from the template.
|
|
///
|
|
/// \param InsertPos If non-NULL, the position in the function template
|
|
/// specialization set where the function template specialization data will
|
|
/// be inserted.
|
|
///
|
|
/// \param TSK the kind of template specialization this is.
|
|
///
|
|
/// \param TemplateArgsAsWritten location info of template arguments.
|
|
///
|
|
/// \param PointOfInstantiation point at which the function template
|
|
/// specialization was first instantiated.
|
|
void setFunctionTemplateSpecialization(ASTContext &C,
|
|
FunctionTemplateDecl *Template,
|
|
const TemplateArgumentList *TemplateArgs,
|
|
void *InsertPos,
|
|
TemplateSpecializationKind TSK,
|
|
const TemplateArgumentListInfo *TemplateArgsAsWritten,
|
|
SourceLocation PointOfInstantiation);
|
|
|
|
/// \brief Specify that this record is an instantiation of the
|
|
/// member function FD.
|
|
void setInstantiationOfMemberFunction(ASTContext &C, FunctionDecl *FD,
|
|
TemplateSpecializationKind TSK);
|
|
|
|
void setParams(ASTContext &C, ArrayRef<ParmVarDecl *> NewParamInfo);
|
|
|
|
protected:
|
|
FunctionDecl(Kind DK, DeclContext *DC, SourceLocation StartLoc,
|
|
const DeclarationNameInfo &NameInfo,
|
|
QualType T, TypeSourceInfo *TInfo,
|
|
StorageClass S, bool isInlineSpecified,
|
|
bool isConstexprSpecified)
|
|
: DeclaratorDecl(DK, DC, NameInfo.getLoc(), NameInfo.getName(), T, TInfo,
|
|
StartLoc),
|
|
DeclContext(DK),
|
|
ParamInfo(0), Body(),
|
|
SClass(S),
|
|
IsInline(isInlineSpecified), IsInlineSpecified(isInlineSpecified),
|
|
IsVirtualAsWritten(false), IsPure(false), HasInheritedPrototype(false),
|
|
HasWrittenPrototype(true), IsDeleted(false), IsTrivial(false),
|
|
IsDefaulted(false), IsExplicitlyDefaulted(false),
|
|
HasImplicitReturnZero(false), IsLateTemplateParsed(false),
|
|
IsConstexpr(isConstexprSpecified), HasSkippedBody(false),
|
|
EndRangeLoc(NameInfo.getEndLoc()),
|
|
TemplateOrSpecialization(),
|
|
DNLoc(NameInfo.getInfo()) {}
|
|
|
|
typedef Redeclarable<FunctionDecl> redeclarable_base;
|
|
virtual FunctionDecl *getNextRedeclaration() { return RedeclLink.getNext(); }
|
|
virtual FunctionDecl *getPreviousDeclImpl() {
|
|
return getPreviousDecl();
|
|
}
|
|
virtual FunctionDecl *getMostRecentDeclImpl() {
|
|
return getMostRecentDecl();
|
|
}
|
|
|
|
public:
|
|
typedef redeclarable_base::redecl_iterator redecl_iterator;
|
|
using redeclarable_base::redecls_begin;
|
|
using redeclarable_base::redecls_end;
|
|
using redeclarable_base::getPreviousDecl;
|
|
using redeclarable_base::getMostRecentDecl;
|
|
|
|
static FunctionDecl *Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation StartLoc, SourceLocation NLoc,
|
|
DeclarationName N, QualType T,
|
|
TypeSourceInfo *TInfo,
|
|
StorageClass SC,
|
|
bool isInlineSpecified = false,
|
|
bool hasWrittenPrototype = true,
|
|
bool isConstexprSpecified = false) {
|
|
DeclarationNameInfo NameInfo(N, NLoc);
|
|
return FunctionDecl::Create(C, DC, StartLoc, NameInfo, T, TInfo,
|
|
SC,
|
|
isInlineSpecified, hasWrittenPrototype,
|
|
isConstexprSpecified);
|
|
}
|
|
|
|
static FunctionDecl *Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation StartLoc,
|
|
const DeclarationNameInfo &NameInfo,
|
|
QualType T, TypeSourceInfo *TInfo,
|
|
StorageClass SC,
|
|
bool isInlineSpecified,
|
|
bool hasWrittenPrototype,
|
|
bool isConstexprSpecified = false);
|
|
|
|
static FunctionDecl *CreateDeserialized(ASTContext &C, unsigned ID);
|
|
|
|
DeclarationNameInfo getNameInfo() const {
|
|
return DeclarationNameInfo(getDeclName(), getLocation(), DNLoc);
|
|
}
|
|
|
|
virtual void getNameForDiagnostic(raw_ostream &OS,
|
|
const PrintingPolicy &Policy,
|
|
bool Qualified) const;
|
|
|
|
void setRangeEnd(SourceLocation E) { EndRangeLoc = E; }
|
|
|
|
virtual SourceRange getSourceRange() const LLVM_READONLY;
|
|
|
|
/// \brief Returns true if the function has a body (definition). The
|
|
/// function body might be in any of the (re-)declarations of this
|
|
/// function. The variant that accepts a FunctionDecl pointer will
|
|
/// set that function declaration to the actual declaration
|
|
/// containing the body (if there is one).
|
|
bool hasBody(const FunctionDecl *&Definition) const;
|
|
|
|
virtual bool hasBody() const {
|
|
const FunctionDecl* Definition;
|
|
return hasBody(Definition);
|
|
}
|
|
|
|
/// hasTrivialBody - Returns whether the function has a trivial body that does
|
|
/// not require any specific codegen.
|
|
bool hasTrivialBody() const;
|
|
|
|
/// isDefined - Returns true if the function is defined at all, including
|
|
/// a deleted definition. Except for the behavior when the function is
|
|
/// deleted, behaves like hasBody.
|
|
bool isDefined(const FunctionDecl *&Definition) const;
|
|
|
|
virtual bool isDefined() const {
|
|
const FunctionDecl* Definition;
|
|
return isDefined(Definition);
|
|
}
|
|
|
|
/// getBody - Retrieve the body (definition) of the function. The
|
|
/// function body might be in any of the (re-)declarations of this
|
|
/// function. The variant that accepts a FunctionDecl pointer will
|
|
/// set that function declaration to the actual declaration
|
|
/// containing the body (if there is one).
|
|
/// NOTE: For checking if there is a body, use hasBody() instead, to avoid
|
|
/// unnecessary AST de-serialization of the body.
|
|
Stmt *getBody(const FunctionDecl *&Definition) const;
|
|
|
|
virtual Stmt *getBody() const {
|
|
const FunctionDecl* Definition;
|
|
return getBody(Definition);
|
|
}
|
|
|
|
/// isThisDeclarationADefinition - Returns whether this specific
|
|
/// declaration of the function is also a definition. This does not
|
|
/// determine whether the function has been defined (e.g., in a
|
|
/// previous definition); for that information, use isDefined. Note
|
|
/// that this returns false for a defaulted function unless that function
|
|
/// has been implicitly defined (possibly as deleted).
|
|
bool isThisDeclarationADefinition() const {
|
|
return IsDeleted || Body || IsLateTemplateParsed;
|
|
}
|
|
|
|
/// doesThisDeclarationHaveABody - Returns whether this specific
|
|
/// declaration of the function has a body - that is, if it is a non-
|
|
/// deleted definition.
|
|
bool doesThisDeclarationHaveABody() const {
|
|
return Body || IsLateTemplateParsed;
|
|
}
|
|
|
|
void setBody(Stmt *B);
|
|
void setLazyBody(uint64_t Offset) { Body = Offset; }
|
|
|
|
/// Whether this function is variadic.
|
|
bool isVariadic() const;
|
|
|
|
/// Whether this function is marked as virtual explicitly.
|
|
bool isVirtualAsWritten() const { return IsVirtualAsWritten; }
|
|
void setVirtualAsWritten(bool V) { IsVirtualAsWritten = V; }
|
|
|
|
/// Whether this virtual function is pure, i.e. makes the containing class
|
|
/// abstract.
|
|
bool isPure() const { return IsPure; }
|
|
void setPure(bool P = true);
|
|
|
|
/// Whether this templated function will be late parsed.
|
|
bool isLateTemplateParsed() const { return IsLateTemplateParsed; }
|
|
void setLateTemplateParsed(bool ILT = true) { IsLateTemplateParsed = ILT; }
|
|
|
|
/// Whether this function is "trivial" in some specialized C++ senses.
|
|
/// Can only be true for default constructors, copy constructors,
|
|
/// copy assignment operators, and destructors. Not meaningful until
|
|
/// the class has been fully built by Sema.
|
|
bool isTrivial() const { return IsTrivial; }
|
|
void setTrivial(bool IT) { IsTrivial = IT; }
|
|
|
|
/// Whether this function is defaulted per C++0x. Only valid for
|
|
/// special member functions.
|
|
bool isDefaulted() const { return IsDefaulted; }
|
|
void setDefaulted(bool D = true) { IsDefaulted = D; }
|
|
|
|
/// Whether this function is explicitly defaulted per C++0x. Only valid
|
|
/// for special member functions.
|
|
bool isExplicitlyDefaulted() const { return IsExplicitlyDefaulted; }
|
|
void setExplicitlyDefaulted(bool ED = true) { IsExplicitlyDefaulted = ED; }
|
|
|
|
/// Whether falling off this function implicitly returns null/zero.
|
|
/// If a more specific implicit return value is required, front-ends
|
|
/// should synthesize the appropriate return statements.
|
|
bool hasImplicitReturnZero() const { return HasImplicitReturnZero; }
|
|
void setHasImplicitReturnZero(bool IRZ) { HasImplicitReturnZero = IRZ; }
|
|
|
|
/// \brief Whether this function has a prototype, either because one
|
|
/// was explicitly written or because it was "inherited" by merging
|
|
/// a declaration without a prototype with a declaration that has a
|
|
/// prototype.
|
|
bool hasPrototype() const {
|
|
return HasWrittenPrototype || HasInheritedPrototype;
|
|
}
|
|
|
|
bool hasWrittenPrototype() const { return HasWrittenPrototype; }
|
|
|
|
/// \brief Whether this function inherited its prototype from a
|
|
/// previous declaration.
|
|
bool hasInheritedPrototype() const { return HasInheritedPrototype; }
|
|
void setHasInheritedPrototype(bool P = true) { HasInheritedPrototype = P; }
|
|
|
|
/// Whether this is a (C++11) constexpr function or constexpr constructor.
|
|
bool isConstexpr() const { return IsConstexpr; }
|
|
void setConstexpr(bool IC) { IsConstexpr = IC; }
|
|
|
|
/// \brief Whether this function has been deleted.
|
|
///
|
|
/// A function that is "deleted" (via the C++0x "= delete" syntax)
|
|
/// acts like a normal function, except that it cannot actually be
|
|
/// called or have its address taken. Deleted functions are
|
|
/// typically used in C++ overload resolution to attract arguments
|
|
/// whose type or lvalue/rvalue-ness would permit the use of a
|
|
/// different overload that would behave incorrectly. For example,
|
|
/// one might use deleted functions to ban implicit conversion from
|
|
/// a floating-point number to an Integer type:
|
|
///
|
|
/// @code
|
|
/// struct Integer {
|
|
/// Integer(long); // construct from a long
|
|
/// Integer(double) = delete; // no construction from float or double
|
|
/// Integer(long double) = delete; // no construction from long double
|
|
/// };
|
|
/// @endcode
|
|
// If a function is deleted, its first declaration must be.
|
|
bool isDeleted() const { return getCanonicalDecl()->IsDeleted; }
|
|
bool isDeletedAsWritten() const { return IsDeleted && !IsDefaulted; }
|
|
void setDeletedAsWritten(bool D = true) { IsDeleted = D; }
|
|
|
|
/// \brief Determines whether this function is "main", which is the
|
|
/// entry point into an executable program.
|
|
bool isMain() const;
|
|
|
|
/// \brief Determines whether this operator new or delete is one
|
|
/// of the reserved global placement operators:
|
|
/// void *operator new(size_t, void *);
|
|
/// void *operator new[](size_t, void *);
|
|
/// void operator delete(void *, void *);
|
|
/// void operator delete[](void *, void *);
|
|
/// These functions have special behavior under [new.delete.placement]:
|
|
/// These functions are reserved, a C++ program may not define
|
|
/// functions that displace the versions in the Standard C++ library.
|
|
/// The provisions of [basic.stc.dynamic] do not apply to these
|
|
/// reserved placement forms of operator new and operator delete.
|
|
///
|
|
/// This function must be an allocation or deallocation function.
|
|
bool isReservedGlobalPlacementOperator() const;
|
|
|
|
/// Compute the language linkage.
|
|
LanguageLinkage getLanguageLinkage() const;
|
|
|
|
/// \brief Determines whether this function is a function with
|
|
/// external, C linkage.
|
|
bool isExternC() const;
|
|
|
|
/// \brief Determines whether this is a global function.
|
|
bool isGlobal() const;
|
|
|
|
/// \brief Determines whether this function is known to be 'noreturn', through
|
|
/// an attribute on its declaration or its type.
|
|
bool isNoReturn() const;
|
|
|
|
/// \brief True if the function was a definition but its body was skipped.
|
|
bool hasSkippedBody() const { return HasSkippedBody; }
|
|
void setHasSkippedBody(bool Skipped = true) { HasSkippedBody = Skipped; }
|
|
|
|
void setPreviousDeclaration(FunctionDecl * PrevDecl);
|
|
|
|
virtual const FunctionDecl *getCanonicalDecl() const;
|
|
virtual FunctionDecl *getCanonicalDecl();
|
|
|
|
unsigned getBuiltinID() const;
|
|
|
|
// Iterator access to formal parameters.
|
|
unsigned param_size() const { return getNumParams(); }
|
|
typedef ParmVarDecl **param_iterator;
|
|
typedef ParmVarDecl * const *param_const_iterator;
|
|
|
|
param_iterator param_begin() { return ParamInfo; }
|
|
param_iterator param_end() { return ParamInfo+param_size(); }
|
|
|
|
param_const_iterator param_begin() const { return ParamInfo; }
|
|
param_const_iterator param_end() const { return ParamInfo+param_size(); }
|
|
|
|
/// getNumParams - Return the number of parameters this function must have
|
|
/// based on its FunctionType. This is the length of the ParamInfo array
|
|
/// after it has been created.
|
|
unsigned getNumParams() const;
|
|
|
|
const ParmVarDecl *getParamDecl(unsigned i) const {
|
|
assert(i < getNumParams() && "Illegal param #");
|
|
return ParamInfo[i];
|
|
}
|
|
ParmVarDecl *getParamDecl(unsigned i) {
|
|
assert(i < getNumParams() && "Illegal param #");
|
|
return ParamInfo[i];
|
|
}
|
|
void setParams(ArrayRef<ParmVarDecl *> NewParamInfo) {
|
|
setParams(getASTContext(), NewParamInfo);
|
|
}
|
|
|
|
const ArrayRef<NamedDecl *> &getDeclsInPrototypeScope() const {
|
|
return DeclsInPrototypeScope;
|
|
}
|
|
void setDeclsInPrototypeScope(ArrayRef<NamedDecl *> NewDecls);
|
|
|
|
/// getMinRequiredArguments - Returns the minimum number of arguments
|
|
/// needed to call this function. This may be fewer than the number of
|
|
/// function parameters, if some of the parameters have default
|
|
/// arguments (in C++).
|
|
unsigned getMinRequiredArguments() const;
|
|
|
|
QualType getResultType() const {
|
|
return getType()->getAs<FunctionType>()->getResultType();
|
|
}
|
|
|
|
/// \brief Determine the type of an expression that calls this function.
|
|
QualType getCallResultType() const {
|
|
return getType()->getAs<FunctionType>()->getCallResultType(getASTContext());
|
|
}
|
|
|
|
/// \brief Returns the storage class as written in the source. For the
|
|
/// computed linkage of symbol, see getLinkage.
|
|
StorageClass getStorageClass() const { return StorageClass(SClass); }
|
|
|
|
/// \brief Determine whether the "inline" keyword was specified for this
|
|
/// function.
|
|
bool isInlineSpecified() const { return IsInlineSpecified; }
|
|
|
|
/// Set whether the "inline" keyword was specified for this function.
|
|
void setInlineSpecified(bool I) {
|
|
IsInlineSpecified = I;
|
|
IsInline = I;
|
|
}
|
|
|
|
/// Flag that this function is implicitly inline.
|
|
void setImplicitlyInline() {
|
|
IsInline = true;
|
|
}
|
|
|
|
/// \brief Determine whether this function should be inlined, because it is
|
|
/// either marked "inline" or "constexpr" or is a member function of a class
|
|
/// that was defined in the class body.
|
|
bool isInlined() const { return IsInline; }
|
|
|
|
bool isInlineDefinitionExternallyVisible() const;
|
|
|
|
bool doesDeclarationForceExternallyVisibleDefinition() const;
|
|
|
|
/// isOverloadedOperator - Whether this function declaration
|
|
/// represents an C++ overloaded operator, e.g., "operator+".
|
|
bool isOverloadedOperator() const {
|
|
return getOverloadedOperator() != OO_None;
|
|
}
|
|
|
|
OverloadedOperatorKind getOverloadedOperator() const;
|
|
|
|
const IdentifierInfo *getLiteralIdentifier() const;
|
|
|
|
/// \brief If this function is an instantiation of a member function
|
|
/// of a class template specialization, retrieves the function from
|
|
/// which it was instantiated.
|
|
///
|
|
/// This routine will return non-NULL for (non-templated) member
|
|
/// functions of class templates and for instantiations of function
|
|
/// templates. For example, given:
|
|
///
|
|
/// \code
|
|
/// template<typename T>
|
|
/// struct X {
|
|
/// void f(T);
|
|
/// };
|
|
/// \endcode
|
|
///
|
|
/// The declaration for X<int>::f is a (non-templated) FunctionDecl
|
|
/// whose parent is the class template specialization X<int>. For
|
|
/// this declaration, getInstantiatedFromFunction() will return
|
|
/// the FunctionDecl X<T>::A. When a complete definition of
|
|
/// X<int>::A is required, it will be instantiated from the
|
|
/// declaration returned by getInstantiatedFromMemberFunction().
|
|
FunctionDecl *getInstantiatedFromMemberFunction() const;
|
|
|
|
/// \brief What kind of templated function this is.
|
|
TemplatedKind getTemplatedKind() const;
|
|
|
|
/// \brief If this function is an instantiation of a member function of a
|
|
/// class template specialization, retrieves the member specialization
|
|
/// information.
|
|
MemberSpecializationInfo *getMemberSpecializationInfo() const {
|
|
return TemplateOrSpecialization.dyn_cast<MemberSpecializationInfo*>();
|
|
}
|
|
|
|
/// \brief Specify that this record is an instantiation of the
|
|
/// member function FD.
|
|
void setInstantiationOfMemberFunction(FunctionDecl *FD,
|
|
TemplateSpecializationKind TSK) {
|
|
setInstantiationOfMemberFunction(getASTContext(), FD, TSK);
|
|
}
|
|
|
|
/// \brief Retrieves the function template that is described by this
|
|
/// function declaration.
|
|
///
|
|
/// Every function template is represented as a FunctionTemplateDecl
|
|
/// and a FunctionDecl (or something derived from FunctionDecl). The
|
|
/// former contains template properties (such as the template
|
|
/// parameter lists) while the latter contains the actual
|
|
/// description of the template's
|
|
/// contents. FunctionTemplateDecl::getTemplatedDecl() retrieves the
|
|
/// FunctionDecl that describes the function template,
|
|
/// getDescribedFunctionTemplate() retrieves the
|
|
/// FunctionTemplateDecl from a FunctionDecl.
|
|
FunctionTemplateDecl *getDescribedFunctionTemplate() const {
|
|
return TemplateOrSpecialization.dyn_cast<FunctionTemplateDecl*>();
|
|
}
|
|
|
|
void setDescribedFunctionTemplate(FunctionTemplateDecl *Template) {
|
|
TemplateOrSpecialization = Template;
|
|
}
|
|
|
|
/// \brief Determine whether this function is a function template
|
|
/// specialization.
|
|
bool isFunctionTemplateSpecialization() const {
|
|
return getPrimaryTemplate() != 0;
|
|
}
|
|
|
|
/// \brief Retrieve the class scope template pattern that this function
|
|
/// template specialization is instantiated from.
|
|
FunctionDecl *getClassScopeSpecializationPattern() const;
|
|
|
|
/// \brief If this function is actually a function template specialization,
|
|
/// retrieve information about this function template specialization.
|
|
/// Otherwise, returns NULL.
|
|
FunctionTemplateSpecializationInfo *getTemplateSpecializationInfo() const {
|
|
return TemplateOrSpecialization.
|
|
dyn_cast<FunctionTemplateSpecializationInfo*>();
|
|
}
|
|
|
|
/// \brief Determines whether this function is a function template
|
|
/// specialization or a member of a class template specialization that can
|
|
/// be implicitly instantiated.
|
|
bool isImplicitlyInstantiable() const;
|
|
|
|
/// \brief Determines if the given function was instantiated from a
|
|
/// function template.
|
|
bool isTemplateInstantiation() const;
|
|
|
|
/// \brief Retrieve the function declaration from which this function could
|
|
/// be instantiated, if it is an instantiation (rather than a non-template
|
|
/// or a specialization, for example).
|
|
FunctionDecl *getTemplateInstantiationPattern() const;
|
|
|
|
/// \brief Retrieve the primary template that this function template
|
|
/// specialization either specializes or was instantiated from.
|
|
///
|
|
/// If this function declaration is not a function template specialization,
|
|
/// returns NULL.
|
|
FunctionTemplateDecl *getPrimaryTemplate() const;
|
|
|
|
/// \brief Retrieve the template arguments used to produce this function
|
|
/// template specialization from the primary template.
|
|
///
|
|
/// If this function declaration is not a function template specialization,
|
|
/// returns NULL.
|
|
const TemplateArgumentList *getTemplateSpecializationArgs() const;
|
|
|
|
/// \brief Retrieve the template argument list as written in the sources,
|
|
/// if any.
|
|
///
|
|
/// If this function declaration is not a function template specialization
|
|
/// or if it had no explicit template argument list, returns NULL.
|
|
/// Note that it an explicit template argument list may be written empty,
|
|
/// e.g., template<> void foo<>(char* s);
|
|
const ASTTemplateArgumentListInfo*
|
|
getTemplateSpecializationArgsAsWritten() const;
|
|
|
|
/// \brief Specify that this function declaration is actually a function
|
|
/// template specialization.
|
|
///
|
|
/// \param Template the function template that this function template
|
|
/// specialization specializes.
|
|
///
|
|
/// \param TemplateArgs the template arguments that produced this
|
|
/// function template specialization from the template.
|
|
///
|
|
/// \param InsertPos If non-NULL, the position in the function template
|
|
/// specialization set where the function template specialization data will
|
|
/// be inserted.
|
|
///
|
|
/// \param TSK the kind of template specialization this is.
|
|
///
|
|
/// \param TemplateArgsAsWritten location info of template arguments.
|
|
///
|
|
/// \param PointOfInstantiation point at which the function template
|
|
/// specialization was first instantiated.
|
|
void setFunctionTemplateSpecialization(FunctionTemplateDecl *Template,
|
|
const TemplateArgumentList *TemplateArgs,
|
|
void *InsertPos,
|
|
TemplateSpecializationKind TSK = TSK_ImplicitInstantiation,
|
|
const TemplateArgumentListInfo *TemplateArgsAsWritten = 0,
|
|
SourceLocation PointOfInstantiation = SourceLocation()) {
|
|
setFunctionTemplateSpecialization(getASTContext(), Template, TemplateArgs,
|
|
InsertPos, TSK, TemplateArgsAsWritten,
|
|
PointOfInstantiation);
|
|
}
|
|
|
|
/// \brief Specifies that this function declaration is actually a
|
|
/// dependent function template specialization.
|
|
void setDependentTemplateSpecialization(ASTContext &Context,
|
|
const UnresolvedSetImpl &Templates,
|
|
const TemplateArgumentListInfo &TemplateArgs);
|
|
|
|
DependentFunctionTemplateSpecializationInfo *
|
|
getDependentSpecializationInfo() const {
|
|
return TemplateOrSpecialization.
|
|
dyn_cast<DependentFunctionTemplateSpecializationInfo*>();
|
|
}
|
|
|
|
/// \brief Determine what kind of template instantiation this function
|
|
/// represents.
|
|
TemplateSpecializationKind getTemplateSpecializationKind() const;
|
|
|
|
/// \brief Determine what kind of template instantiation this function
|
|
/// represents.
|
|
void setTemplateSpecializationKind(TemplateSpecializationKind TSK,
|
|
SourceLocation PointOfInstantiation = SourceLocation());
|
|
|
|
/// \brief Retrieve the (first) point of instantiation of a function template
|
|
/// specialization or a member of a class template specialization.
|
|
///
|
|
/// \returns the first point of instantiation, if this function was
|
|
/// instantiated from a template; otherwise, returns an invalid source
|
|
/// location.
|
|
SourceLocation getPointOfInstantiation() const;
|
|
|
|
/// \brief Determine whether this is or was instantiated from an out-of-line
|
|
/// definition of a member function.
|
|
virtual bool isOutOfLine() const;
|
|
|
|
/// \brief Identify a memory copying or setting function.
|
|
/// If the given function is a memory copy or setting function, returns
|
|
/// the corresponding Builtin ID. If the function is not a memory function,
|
|
/// returns 0.
|
|
unsigned getMemoryFunctionKind() const;
|
|
|
|
// Implement isa/cast/dyncast/etc.
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) {
|
|
return K >= firstFunction && K <= lastFunction;
|
|
}
|
|
static DeclContext *castToDeclContext(const FunctionDecl *D) {
|
|
return static_cast<DeclContext *>(const_cast<FunctionDecl*>(D));
|
|
}
|
|
static FunctionDecl *castFromDeclContext(const DeclContext *DC) {
|
|
return static_cast<FunctionDecl *>(const_cast<DeclContext*>(DC));
|
|
}
|
|
|
|
friend class ASTDeclReader;
|
|
friend class ASTDeclWriter;
|
|
};
|
|
|
|
|
|
/// FieldDecl - An instance of this class is created by Sema::ActOnField to
|
|
/// represent a member of a struct/union/class.
|
|
class FieldDecl : public DeclaratorDecl {
|
|
// FIXME: This can be packed into the bitfields in Decl.
|
|
bool Mutable : 1;
|
|
mutable unsigned CachedFieldIndex : 31;
|
|
|
|
/// \brief An InClassInitStyle value, and either a bit width expression (if
|
|
/// the InClassInitStyle value is ICIS_NoInit), or a pointer to the in-class
|
|
/// initializer for this field (otherwise).
|
|
///
|
|
/// We can safely combine these two because in-class initializers are not
|
|
/// permitted for bit-fields.
|
|
///
|
|
/// If the InClassInitStyle is not ICIS_NoInit and the initializer is null,
|
|
/// then this field has an in-class initializer which has not yet been parsed
|
|
/// and attached.
|
|
llvm::PointerIntPair<Expr *, 2, unsigned> InitializerOrBitWidth;
|
|
protected:
|
|
FieldDecl(Kind DK, DeclContext *DC, SourceLocation StartLoc,
|
|
SourceLocation IdLoc, IdentifierInfo *Id,
|
|
QualType T, TypeSourceInfo *TInfo, Expr *BW, bool Mutable,
|
|
InClassInitStyle InitStyle)
|
|
: DeclaratorDecl(DK, DC, IdLoc, Id, T, TInfo, StartLoc),
|
|
Mutable(Mutable), CachedFieldIndex(0),
|
|
InitializerOrBitWidth(BW, InitStyle) {
|
|
assert((!BW || InitStyle == ICIS_NoInit) && "got initializer for bitfield");
|
|
}
|
|
|
|
public:
|
|
static FieldDecl *Create(const ASTContext &C, DeclContext *DC,
|
|
SourceLocation StartLoc, SourceLocation IdLoc,
|
|
IdentifierInfo *Id, QualType T,
|
|
TypeSourceInfo *TInfo, Expr *BW, bool Mutable,
|
|
InClassInitStyle InitStyle);
|
|
|
|
static FieldDecl *CreateDeserialized(ASTContext &C, unsigned ID);
|
|
|
|
/// getFieldIndex - Returns the index of this field within its record,
|
|
/// as appropriate for passing to ASTRecordLayout::getFieldOffset.
|
|
unsigned getFieldIndex() const;
|
|
|
|
/// isMutable - Determines whether this field is mutable (C++ only).
|
|
bool isMutable() const { return Mutable; }
|
|
|
|
/// isBitfield - Determines whether this field is a bitfield.
|
|
bool isBitField() const {
|
|
return getInClassInitStyle() == ICIS_NoInit &&
|
|
InitializerOrBitWidth.getPointer();
|
|
}
|
|
|
|
/// @brief Determines whether this is an unnamed bitfield.
|
|
bool isUnnamedBitfield() const { return isBitField() && !getDeclName(); }
|
|
|
|
/// isAnonymousStructOrUnion - Determines whether this field is a
|
|
/// representative for an anonymous struct or union. Such fields are
|
|
/// unnamed and are implicitly generated by the implementation to
|
|
/// store the data for the anonymous union or struct.
|
|
bool isAnonymousStructOrUnion() const;
|
|
|
|
Expr *getBitWidth() const {
|
|
return isBitField() ? InitializerOrBitWidth.getPointer() : 0;
|
|
}
|
|
unsigned getBitWidthValue(const ASTContext &Ctx) const;
|
|
|
|
/// setBitWidth - Set the bit-field width for this member.
|
|
// Note: used by some clients (i.e., do not remove it).
|
|
void setBitWidth(Expr *Width);
|
|
/// removeBitWidth - Remove the bit-field width from this member.
|
|
// Note: used by some clients (i.e., do not remove it).
|
|
void removeBitWidth() {
|
|
assert(isBitField() && "no bitfield width to remove");
|
|
InitializerOrBitWidth.setPointer(0);
|
|
}
|
|
|
|
/// getInClassInitStyle - Get the kind of (C++11) in-class initializer which
|
|
/// this field has.
|
|
InClassInitStyle getInClassInitStyle() const {
|
|
return static_cast<InClassInitStyle>(InitializerOrBitWidth.getInt());
|
|
}
|
|
|
|
/// hasInClassInitializer - Determine whether this member has a C++11 in-class
|
|
/// initializer.
|
|
bool hasInClassInitializer() const {
|
|
return getInClassInitStyle() != ICIS_NoInit;
|
|
}
|
|
/// getInClassInitializer - Get the C++11 in-class initializer for this
|
|
/// member, or null if one has not been set. If a valid declaration has an
|
|
/// in-class initializer, but this returns null, then we have not parsed and
|
|
/// attached it yet.
|
|
Expr *getInClassInitializer() const {
|
|
return hasInClassInitializer() ? InitializerOrBitWidth.getPointer() : 0;
|
|
}
|
|
/// setInClassInitializer - Set the C++11 in-class initializer for this
|
|
/// member.
|
|
void setInClassInitializer(Expr *Init);
|
|
/// removeInClassInitializer - Remove the C++11 in-class initializer from this
|
|
/// member.
|
|
void removeInClassInitializer() {
|
|
assert(hasInClassInitializer() && "no initializer to remove");
|
|
InitializerOrBitWidth.setPointer(0);
|
|
InitializerOrBitWidth.setInt(ICIS_NoInit);
|
|
}
|
|
|
|
/// getParent - Returns the parent of this field declaration, which
|
|
/// is the struct in which this method is defined.
|
|
const RecordDecl *getParent() const {
|
|
return cast<RecordDecl>(getDeclContext());
|
|
}
|
|
|
|
RecordDecl *getParent() {
|
|
return cast<RecordDecl>(getDeclContext());
|
|
}
|
|
|
|
SourceRange getSourceRange() const LLVM_READONLY;
|
|
|
|
// Implement isa/cast/dyncast/etc.
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K >= firstField && K <= lastField; }
|
|
|
|
friend class ASTDeclReader;
|
|
friend class ASTDeclWriter;
|
|
};
|
|
|
|
/// EnumConstantDecl - An instance of this object exists for each enum constant
|
|
/// that is defined. For example, in "enum X {a,b}", each of a/b are
|
|
/// EnumConstantDecl's, X is an instance of EnumDecl, and the type of a/b is a
|
|
/// TagType for the X EnumDecl.
|
|
class EnumConstantDecl : public ValueDecl {
|
|
Stmt *Init; // an integer constant expression
|
|
llvm::APSInt Val; // The value.
|
|
protected:
|
|
EnumConstantDecl(DeclContext *DC, SourceLocation L,
|
|
IdentifierInfo *Id, QualType T, Expr *E,
|
|
const llvm::APSInt &V)
|
|
: ValueDecl(EnumConstant, DC, L, Id, T), Init((Stmt*)E), Val(V) {}
|
|
|
|
public:
|
|
|
|
static EnumConstantDecl *Create(ASTContext &C, EnumDecl *DC,
|
|
SourceLocation L, IdentifierInfo *Id,
|
|
QualType T, Expr *E,
|
|
const llvm::APSInt &V);
|
|
static EnumConstantDecl *CreateDeserialized(ASTContext &C, unsigned ID);
|
|
|
|
const Expr *getInitExpr() const { return (const Expr*) Init; }
|
|
Expr *getInitExpr() { return (Expr*) Init; }
|
|
const llvm::APSInt &getInitVal() const { return Val; }
|
|
|
|
void setInitExpr(Expr *E) { Init = (Stmt*) E; }
|
|
void setInitVal(const llvm::APSInt &V) { Val = V; }
|
|
|
|
SourceRange getSourceRange() const LLVM_READONLY;
|
|
|
|
// Implement isa/cast/dyncast/etc.
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K == EnumConstant; }
|
|
|
|
friend class StmtIteratorBase;
|
|
};
|
|
|
|
/// IndirectFieldDecl - An instance of this class is created to represent a
|
|
/// field injected from an anonymous union/struct into the parent scope.
|
|
/// IndirectFieldDecl are always implicit.
|
|
class IndirectFieldDecl : public ValueDecl {
|
|
virtual void anchor();
|
|
NamedDecl **Chaining;
|
|
unsigned ChainingSize;
|
|
|
|
IndirectFieldDecl(DeclContext *DC, SourceLocation L,
|
|
DeclarationName N, QualType T,
|
|
NamedDecl **CH, unsigned CHS)
|
|
: ValueDecl(IndirectField, DC, L, N, T), Chaining(CH), ChainingSize(CHS) {}
|
|
|
|
public:
|
|
static IndirectFieldDecl *Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation L, IdentifierInfo *Id,
|
|
QualType T, NamedDecl **CH, unsigned CHS);
|
|
|
|
static IndirectFieldDecl *CreateDeserialized(ASTContext &C, unsigned ID);
|
|
|
|
typedef NamedDecl * const *chain_iterator;
|
|
chain_iterator chain_begin() const { return Chaining; }
|
|
chain_iterator chain_end() const { return Chaining+ChainingSize; }
|
|
|
|
unsigned getChainingSize() const { return ChainingSize; }
|
|
|
|
FieldDecl *getAnonField() const {
|
|
assert(ChainingSize >= 2);
|
|
return cast<FieldDecl>(Chaining[ChainingSize - 1]);
|
|
}
|
|
|
|
VarDecl *getVarDecl() const {
|
|
assert(ChainingSize >= 2);
|
|
return dyn_cast<VarDecl>(*chain_begin());
|
|
}
|
|
|
|
// Implement isa/cast/dyncast/etc.
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K == IndirectField; }
|
|
friend class ASTDeclReader;
|
|
};
|
|
|
|
/// TypeDecl - Represents a declaration of a type.
|
|
///
|
|
class TypeDecl : public NamedDecl {
|
|
virtual void anchor();
|
|
/// TypeForDecl - This indicates the Type object that represents
|
|
/// this TypeDecl. It is a cache maintained by
|
|
/// ASTContext::getTypedefType, ASTContext::getTagDeclType, and
|
|
/// ASTContext::getTemplateTypeParmType, and TemplateTypeParmDecl.
|
|
mutable const Type *TypeForDecl;
|
|
/// LocStart - The start of the source range for this declaration.
|
|
SourceLocation LocStart;
|
|
friend class ASTContext;
|
|
friend class DeclContext;
|
|
friend class TagDecl;
|
|
friend class TemplateTypeParmDecl;
|
|
friend class TagType;
|
|
friend class ASTReader;
|
|
|
|
protected:
|
|
TypeDecl(Kind DK, DeclContext *DC, SourceLocation L, IdentifierInfo *Id,
|
|
SourceLocation StartL = SourceLocation())
|
|
: NamedDecl(DK, DC, L, Id), TypeForDecl(0), LocStart(StartL) {}
|
|
|
|
public:
|
|
// Low-level accessor. If you just want the type defined by this node,
|
|
// check out ASTContext::getTypeDeclType or one of
|
|
// ASTContext::getTypedefType, ASTContext::getRecordType, etc. if you
|
|
// already know the specific kind of node this is.
|
|
const Type *getTypeForDecl() const { return TypeForDecl; }
|
|
void setTypeForDecl(const Type *TD) { TypeForDecl = TD; }
|
|
|
|
SourceLocation getLocStart() const LLVM_READONLY { return LocStart; }
|
|
void setLocStart(SourceLocation L) { LocStart = L; }
|
|
virtual SourceRange getSourceRange() const LLVM_READONLY {
|
|
if (LocStart.isValid())
|
|
return SourceRange(LocStart, getLocation());
|
|
else
|
|
return SourceRange(getLocation());
|
|
}
|
|
|
|
// Implement isa/cast/dyncast/etc.
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K >= firstType && K <= lastType; }
|
|
};
|
|
|
|
|
|
/// Base class for declarations which introduce a typedef-name.
|
|
class TypedefNameDecl : public TypeDecl, public Redeclarable<TypedefNameDecl> {
|
|
virtual void anchor();
|
|
/// UnderlyingType - This is the type the typedef is set to.
|
|
TypeSourceInfo *TInfo;
|
|
|
|
protected:
|
|
TypedefNameDecl(Kind DK, DeclContext *DC, SourceLocation StartLoc,
|
|
SourceLocation IdLoc, IdentifierInfo *Id,
|
|
TypeSourceInfo *TInfo)
|
|
: TypeDecl(DK, DC, IdLoc, Id, StartLoc), TInfo(TInfo) {}
|
|
|
|
typedef Redeclarable<TypedefNameDecl> redeclarable_base;
|
|
virtual TypedefNameDecl *getNextRedeclaration() {
|
|
return RedeclLink.getNext();
|
|
}
|
|
virtual TypedefNameDecl *getPreviousDeclImpl() {
|
|
return getPreviousDecl();
|
|
}
|
|
virtual TypedefNameDecl *getMostRecentDeclImpl() {
|
|
return getMostRecentDecl();
|
|
}
|
|
|
|
public:
|
|
typedef redeclarable_base::redecl_iterator redecl_iterator;
|
|
using redeclarable_base::redecls_begin;
|
|
using redeclarable_base::redecls_end;
|
|
using redeclarable_base::getPreviousDecl;
|
|
using redeclarable_base::getMostRecentDecl;
|
|
|
|
TypeSourceInfo *getTypeSourceInfo() const {
|
|
return TInfo;
|
|
}
|
|
|
|
/// Retrieves the canonical declaration of this typedef-name.
|
|
TypedefNameDecl *getCanonicalDecl() {
|
|
return getFirstDeclaration();
|
|
}
|
|
const TypedefNameDecl *getCanonicalDecl() const {
|
|
return getFirstDeclaration();
|
|
}
|
|
|
|
QualType getUnderlyingType() const {
|
|
return TInfo->getType();
|
|
}
|
|
void setTypeSourceInfo(TypeSourceInfo *newType) {
|
|
TInfo = newType;
|
|
}
|
|
|
|
// Implement isa/cast/dyncast/etc.
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) {
|
|
return K >= firstTypedefName && K <= lastTypedefName;
|
|
}
|
|
};
|
|
|
|
/// TypedefDecl - Represents the declaration of a typedef-name via the 'typedef'
|
|
/// type specifier.
|
|
class TypedefDecl : public TypedefNameDecl {
|
|
TypedefDecl(DeclContext *DC, SourceLocation StartLoc, SourceLocation IdLoc,
|
|
IdentifierInfo *Id, TypeSourceInfo *TInfo)
|
|
: TypedefNameDecl(Typedef, DC, StartLoc, IdLoc, Id, TInfo) {}
|
|
|
|
public:
|
|
static TypedefDecl *Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation StartLoc, SourceLocation IdLoc,
|
|
IdentifierInfo *Id, TypeSourceInfo *TInfo);
|
|
static TypedefDecl *CreateDeserialized(ASTContext &C, unsigned ID);
|
|
|
|
SourceRange getSourceRange() const LLVM_READONLY;
|
|
|
|
// Implement isa/cast/dyncast/etc.
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K == Typedef; }
|
|
};
|
|
|
|
/// TypeAliasDecl - Represents the declaration of a typedef-name via a C++0x
|
|
/// alias-declaration.
|
|
class TypeAliasDecl : public TypedefNameDecl {
|
|
TypeAliasDecl(DeclContext *DC, SourceLocation StartLoc, SourceLocation IdLoc,
|
|
IdentifierInfo *Id, TypeSourceInfo *TInfo)
|
|
: TypedefNameDecl(TypeAlias, DC, StartLoc, IdLoc, Id, TInfo) {}
|
|
|
|
public:
|
|
static TypeAliasDecl *Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation StartLoc, SourceLocation IdLoc,
|
|
IdentifierInfo *Id, TypeSourceInfo *TInfo);
|
|
static TypeAliasDecl *CreateDeserialized(ASTContext &C, unsigned ID);
|
|
|
|
SourceRange getSourceRange() const LLVM_READONLY;
|
|
|
|
// Implement isa/cast/dyncast/etc.
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K == TypeAlias; }
|
|
};
|
|
|
|
/// TagDecl - Represents the declaration of a struct/union/class/enum.
|
|
class TagDecl
|
|
: public TypeDecl, public DeclContext, public Redeclarable<TagDecl> {
|
|
public:
|
|
// This is really ugly.
|
|
typedef TagTypeKind TagKind;
|
|
|
|
private:
|
|
// FIXME: This can be packed into the bitfields in Decl.
|
|
/// TagDeclKind - The TagKind enum.
|
|
unsigned TagDeclKind : 3;
|
|
|
|
/// IsCompleteDefinition - True if this is a definition ("struct foo
|
|
/// {};"), false if it is a declaration ("struct foo;"). It is not
|
|
/// a definition until the definition has been fully processed.
|
|
bool IsCompleteDefinition : 1;
|
|
|
|
protected:
|
|
/// IsBeingDefined - True if this is currently being defined.
|
|
bool IsBeingDefined : 1;
|
|
|
|
private:
|
|
/// IsEmbeddedInDeclarator - True if this tag declaration is
|
|
/// "embedded" (i.e., defined or declared for the very first time)
|
|
/// in the syntax of a declarator.
|
|
bool IsEmbeddedInDeclarator : 1;
|
|
|
|
/// \brief True if this tag is free standing, e.g. "struct foo;".
|
|
bool IsFreeStanding : 1;
|
|
|
|
protected:
|
|
// These are used by (and only defined for) EnumDecl.
|
|
unsigned NumPositiveBits : 8;
|
|
unsigned NumNegativeBits : 8;
|
|
|
|
/// IsScoped - True if this tag declaration is a scoped enumeration. Only
|
|
/// possible in C++11 mode.
|
|
bool IsScoped : 1;
|
|
/// IsScopedUsingClassTag - If this tag declaration is a scoped enum,
|
|
/// then this is true if the scoped enum was declared using the class
|
|
/// tag, false if it was declared with the struct tag. No meaning is
|
|
/// associated if this tag declaration is not a scoped enum.
|
|
bool IsScopedUsingClassTag : 1;
|
|
|
|
/// IsFixed - True if this is an enumeration with fixed underlying type. Only
|
|
/// possible in C++11, Microsoft extensions, or Objective C mode.
|
|
bool IsFixed : 1;
|
|
|
|
/// \brief Indicates whether it is possible for declarations of this kind
|
|
/// to have an out-of-date definition.
|
|
///
|
|
/// This option is only enabled when modules are enabled.
|
|
bool MayHaveOutOfDateDef : 1;
|
|
|
|
private:
|
|
SourceLocation RBraceLoc;
|
|
|
|
// A struct representing syntactic qualifier info,
|
|
// to be used for the (uncommon) case of out-of-line declarations.
|
|
typedef QualifierInfo ExtInfo;
|
|
|
|
/// TypedefNameDeclOrQualifier - If the (out-of-line) tag declaration name
|
|
/// is qualified, it points to the qualifier info (nns and range);
|
|
/// otherwise, if the tag declaration is anonymous and it is part of
|
|
/// a typedef or alias, it points to the TypedefNameDecl (used for mangling);
|
|
/// otherwise, it is a null (TypedefNameDecl) pointer.
|
|
llvm::PointerUnion<TypedefNameDecl*, ExtInfo*> TypedefNameDeclOrQualifier;
|
|
|
|
bool hasExtInfo() const { return TypedefNameDeclOrQualifier.is<ExtInfo*>(); }
|
|
ExtInfo *getExtInfo() { return TypedefNameDeclOrQualifier.get<ExtInfo*>(); }
|
|
const ExtInfo *getExtInfo() const {
|
|
return TypedefNameDeclOrQualifier.get<ExtInfo*>();
|
|
}
|
|
|
|
protected:
|
|
TagDecl(Kind DK, TagKind TK, DeclContext *DC,
|
|
SourceLocation L, IdentifierInfo *Id,
|
|
TagDecl *PrevDecl, SourceLocation StartL)
|
|
: TypeDecl(DK, DC, L, Id, StartL), DeclContext(DK),
|
|
TypedefNameDeclOrQualifier((TypedefNameDecl*) 0) {
|
|
assert((DK != Enum || TK == TTK_Enum) &&
|
|
"EnumDecl not matched with TTK_Enum");
|
|
TagDeclKind = TK;
|
|
IsCompleteDefinition = false;
|
|
IsBeingDefined = false;
|
|
IsEmbeddedInDeclarator = false;
|
|
IsFreeStanding = false;
|
|
setPreviousDeclaration(PrevDecl);
|
|
}
|
|
|
|
typedef Redeclarable<TagDecl> redeclarable_base;
|
|
virtual TagDecl *getNextRedeclaration() { return RedeclLink.getNext(); }
|
|
virtual TagDecl *getPreviousDeclImpl() {
|
|
return getPreviousDecl();
|
|
}
|
|
virtual TagDecl *getMostRecentDeclImpl() {
|
|
return getMostRecentDecl();
|
|
}
|
|
|
|
/// @brief Completes the definition of this tag declaration.
|
|
///
|
|
/// This is a helper function for derived classes.
|
|
void completeDefinition();
|
|
|
|
public:
|
|
typedef redeclarable_base::redecl_iterator redecl_iterator;
|
|
using redeclarable_base::redecls_begin;
|
|
using redeclarable_base::redecls_end;
|
|
using redeclarable_base::getPreviousDecl;
|
|
using redeclarable_base::getMostRecentDecl;
|
|
|
|
SourceLocation getRBraceLoc() const { return RBraceLoc; }
|
|
void setRBraceLoc(SourceLocation L) { RBraceLoc = L; }
|
|
|
|
/// getInnerLocStart - Return SourceLocation representing start of source
|
|
/// range ignoring outer template declarations.
|
|
SourceLocation getInnerLocStart() const { return getLocStart(); }
|
|
|
|
/// getOuterLocStart - Return SourceLocation representing start of source
|
|
/// range taking into account any outer template declarations.
|
|
SourceLocation getOuterLocStart() const;
|
|
virtual SourceRange getSourceRange() const LLVM_READONLY;
|
|
|
|
virtual TagDecl* getCanonicalDecl();
|
|
const TagDecl* getCanonicalDecl() const {
|
|
return const_cast<TagDecl*>(this)->getCanonicalDecl();
|
|
}
|
|
|
|
/// isThisDeclarationADefinition() - Return true if this declaration
|
|
/// is a completion definintion of the type. Provided for consistency.
|
|
bool isThisDeclarationADefinition() const {
|
|
return isCompleteDefinition();
|
|
}
|
|
|
|
/// isCompleteDefinition - Return true if this decl has its body
|
|
/// fully specified.
|
|
bool isCompleteDefinition() const {
|
|
return IsCompleteDefinition;
|
|
}
|
|
|
|
/// isBeingDefined - Return true if this decl is currently being defined.
|
|
bool isBeingDefined() const {
|
|
return IsBeingDefined;
|
|
}
|
|
|
|
bool isEmbeddedInDeclarator() const {
|
|
return IsEmbeddedInDeclarator;
|
|
}
|
|
void setEmbeddedInDeclarator(bool isInDeclarator) {
|
|
IsEmbeddedInDeclarator = isInDeclarator;
|
|
}
|
|
|
|
bool isFreeStanding() const { return IsFreeStanding; }
|
|
void setFreeStanding(bool isFreeStanding = true) {
|
|
IsFreeStanding = isFreeStanding;
|
|
}
|
|
|
|
/// \brief Whether this declaration declares a type that is
|
|
/// dependent, i.e., a type that somehow depends on template
|
|
/// parameters.
|
|
bool isDependentType() const { return isDependentContext(); }
|
|
|
|
/// @brief Starts the definition of this tag declaration.
|
|
///
|
|
/// This method should be invoked at the beginning of the definition
|
|
/// of this tag declaration. It will set the tag type into a state
|
|
/// where it is in the process of being defined.
|
|
void startDefinition();
|
|
|
|
/// getDefinition - Returns the TagDecl that actually defines this
|
|
/// struct/union/class/enum. When determining whether or not a
|
|
/// struct/union/class/enum has a definition, one should use this
|
|
/// method as opposed to 'isDefinition'. 'isDefinition' indicates
|
|
/// whether or not a specific TagDecl is defining declaration, not
|
|
/// whether or not the struct/union/class/enum type is defined.
|
|
/// This method returns NULL if there is no TagDecl that defines
|
|
/// the struct/union/class/enum.
|
|
TagDecl *getDefinition() const;
|
|
|
|
void setCompleteDefinition(bool V) { IsCompleteDefinition = V; }
|
|
|
|
// FIXME: Return StringRef;
|
|
const char *getKindName() const {
|
|
return TypeWithKeyword::getTagTypeKindName(getTagKind());
|
|
}
|
|
|
|
TagKind getTagKind() const {
|
|
return TagKind(TagDeclKind);
|
|
}
|
|
|
|
void setTagKind(TagKind TK) { TagDeclKind = TK; }
|
|
|
|
bool isStruct() const { return getTagKind() == TTK_Struct; }
|
|
bool isInterface() const { return getTagKind() == TTK_Interface; }
|
|
bool isClass() const { return getTagKind() == TTK_Class; }
|
|
bool isUnion() const { return getTagKind() == TTK_Union; }
|
|
bool isEnum() const { return getTagKind() == TTK_Enum; }
|
|
|
|
/// Is this tag type named, either directly or via being defined in
|
|
/// a typedef of this type?
|
|
///
|
|
/// C++11 [basic.link]p8:
|
|
/// A type is said to have linkage if and only if:
|
|
/// - it is a class or enumeration type that is named (or has a
|
|
/// name for linkage purposes) and the name has linkage; ...
|
|
/// C++11 [dcl.typedef]p9:
|
|
/// If the typedef declaration defines an unnamed class (or enum),
|
|
/// the first typedef-name declared by the declaration to be that
|
|
/// class type (or enum type) is used to denote the class type (or
|
|
/// enum type) for linkage purposes only.
|
|
///
|
|
/// C does not have an analogous rule, but the same concept is
|
|
/// nonetheless useful in some places.
|
|
bool hasNameForLinkage() const {
|
|
return (getDeclName() || getTypedefNameForAnonDecl());
|
|
}
|
|
|
|
TypedefNameDecl *getTypedefNameForAnonDecl() const {
|
|
return hasExtInfo() ? 0 :
|
|
TypedefNameDeclOrQualifier.get<TypedefNameDecl*>();
|
|
}
|
|
|
|
void setTypedefNameForAnonDecl(TypedefNameDecl *TDD);
|
|
|
|
/// \brief Retrieve the nested-name-specifier that qualifies the name of this
|
|
/// declaration, if it was present in the source.
|
|
NestedNameSpecifier *getQualifier() const {
|
|
return hasExtInfo() ? getExtInfo()->QualifierLoc.getNestedNameSpecifier()
|
|
: 0;
|
|
}
|
|
|
|
/// \brief Retrieve the nested-name-specifier (with source-location
|
|
/// information) that qualifies the name of this declaration, if it was
|
|
/// present in the source.
|
|
NestedNameSpecifierLoc getQualifierLoc() const {
|
|
return hasExtInfo() ? getExtInfo()->QualifierLoc
|
|
: NestedNameSpecifierLoc();
|
|
}
|
|
|
|
void setQualifierInfo(NestedNameSpecifierLoc QualifierLoc);
|
|
|
|
unsigned getNumTemplateParameterLists() const {
|
|
return hasExtInfo() ? getExtInfo()->NumTemplParamLists : 0;
|
|
}
|
|
TemplateParameterList *getTemplateParameterList(unsigned i) const {
|
|
assert(i < getNumTemplateParameterLists());
|
|
return getExtInfo()->TemplParamLists[i];
|
|
}
|
|
void setTemplateParameterListsInfo(ASTContext &Context, unsigned NumTPLists,
|
|
TemplateParameterList **TPLists);
|
|
|
|
// Implement isa/cast/dyncast/etc.
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K >= firstTag && K <= lastTag; }
|
|
|
|
static DeclContext *castToDeclContext(const TagDecl *D) {
|
|
return static_cast<DeclContext *>(const_cast<TagDecl*>(D));
|
|
}
|
|
static TagDecl *castFromDeclContext(const DeclContext *DC) {
|
|
return static_cast<TagDecl *>(const_cast<DeclContext*>(DC));
|
|
}
|
|
|
|
friend class ASTDeclReader;
|
|
friend class ASTDeclWriter;
|
|
};
|
|
|
|
/// EnumDecl - Represents an enum. In C++11, enums can be forward-declared
|
|
/// with a fixed underlying type, and in C we allow them to be forward-declared
|
|
/// with no underlying type as an extension.
|
|
class EnumDecl : public TagDecl {
|
|
virtual void anchor();
|
|
/// IntegerType - This represent the integer type that the enum corresponds
|
|
/// to for code generation purposes. Note that the enumerator constants may
|
|
/// have a different type than this does.
|
|
///
|
|
/// If the underlying integer type was explicitly stated in the source
|
|
/// code, this is a TypeSourceInfo* for that type. Otherwise this type
|
|
/// was automatically deduced somehow, and this is a Type*.
|
|
///
|
|
/// Normally if IsFixed(), this would contain a TypeSourceInfo*, but in
|
|
/// some cases it won't.
|
|
///
|
|
/// The underlying type of an enumeration never has any qualifiers, so
|
|
/// we can get away with just storing a raw Type*, and thus save an
|
|
/// extra pointer when TypeSourceInfo is needed.
|
|
|
|
llvm::PointerUnion<const Type*, TypeSourceInfo*> IntegerType;
|
|
|
|
/// PromotionType - The integer type that values of this type should
|
|
/// promote to. In C, enumerators are generally of an integer type
|
|
/// directly, but gcc-style large enumerators (and all enumerators
|
|
/// in C++) are of the enum type instead.
|
|
QualType PromotionType;
|
|
|
|
/// \brief If this enumeration is an instantiation of a member enumeration
|
|
/// of a class template specialization, this is the member specialization
|
|
/// information.
|
|
MemberSpecializationInfo *SpecializationInfo;
|
|
|
|
EnumDecl(DeclContext *DC, SourceLocation StartLoc, SourceLocation IdLoc,
|
|
IdentifierInfo *Id, EnumDecl *PrevDecl,
|
|
bool Scoped, bool ScopedUsingClassTag, bool Fixed)
|
|
: TagDecl(Enum, TTK_Enum, DC, IdLoc, Id, PrevDecl, StartLoc),
|
|
SpecializationInfo(0) {
|
|
assert(Scoped || !ScopedUsingClassTag);
|
|
IntegerType = (const Type*)0;
|
|
NumNegativeBits = 0;
|
|
NumPositiveBits = 0;
|
|
IsScoped = Scoped;
|
|
IsScopedUsingClassTag = ScopedUsingClassTag;
|
|
IsFixed = Fixed;
|
|
}
|
|
|
|
void setInstantiationOfMemberEnum(ASTContext &C, EnumDecl *ED,
|
|
TemplateSpecializationKind TSK);
|
|
public:
|
|
EnumDecl *getCanonicalDecl() {
|
|
return cast<EnumDecl>(TagDecl::getCanonicalDecl());
|
|
}
|
|
const EnumDecl *getCanonicalDecl() const {
|
|
return cast<EnumDecl>(TagDecl::getCanonicalDecl());
|
|
}
|
|
|
|
const EnumDecl *getPreviousDecl() const {
|
|
return cast_or_null<EnumDecl>(TagDecl::getPreviousDecl());
|
|
}
|
|
EnumDecl *getPreviousDecl() {
|
|
return cast_or_null<EnumDecl>(TagDecl::getPreviousDecl());
|
|
}
|
|
|
|
const EnumDecl *getMostRecentDecl() const {
|
|
return cast<EnumDecl>(TagDecl::getMostRecentDecl());
|
|
}
|
|
EnumDecl *getMostRecentDecl() {
|
|
return cast<EnumDecl>(TagDecl::getMostRecentDecl());
|
|
}
|
|
|
|
EnumDecl *getDefinition() const {
|
|
return cast_or_null<EnumDecl>(TagDecl::getDefinition());
|
|
}
|
|
|
|
static EnumDecl *Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation StartLoc, SourceLocation IdLoc,
|
|
IdentifierInfo *Id, EnumDecl *PrevDecl,
|
|
bool IsScoped, bool IsScopedUsingClassTag,
|
|
bool IsFixed);
|
|
static EnumDecl *CreateDeserialized(ASTContext &C, unsigned ID);
|
|
|
|
/// completeDefinition - When created, the EnumDecl corresponds to a
|
|
/// forward-declared enum. This method is used to mark the
|
|
/// declaration as being defined; it's enumerators have already been
|
|
/// added (via DeclContext::addDecl). NewType is the new underlying
|
|
/// type of the enumeration type.
|
|
void completeDefinition(QualType NewType,
|
|
QualType PromotionType,
|
|
unsigned NumPositiveBits,
|
|
unsigned NumNegativeBits);
|
|
|
|
// enumerator_iterator - Iterates through the enumerators of this
|
|
// enumeration.
|
|
typedef specific_decl_iterator<EnumConstantDecl> enumerator_iterator;
|
|
|
|
enumerator_iterator enumerator_begin() const {
|
|
const EnumDecl *E = getDefinition();
|
|
if (!E)
|
|
E = this;
|
|
return enumerator_iterator(E->decls_begin());
|
|
}
|
|
|
|
enumerator_iterator enumerator_end() const {
|
|
const EnumDecl *E = getDefinition();
|
|
if (!E)
|
|
E = this;
|
|
return enumerator_iterator(E->decls_end());
|
|
}
|
|
|
|
/// getPromotionType - Return the integer type that enumerators
|
|
/// should promote to.
|
|
QualType getPromotionType() const { return PromotionType; }
|
|
|
|
/// \brief Set the promotion type.
|
|
void setPromotionType(QualType T) { PromotionType = T; }
|
|
|
|
/// getIntegerType - Return the integer type this enum decl corresponds to.
|
|
/// This returns a null qualtype for an enum forward definition.
|
|
QualType getIntegerType() const {
|
|
if (!IntegerType)
|
|
return QualType();
|
|
if (const Type* T = IntegerType.dyn_cast<const Type*>())
|
|
return QualType(T, 0);
|
|
return IntegerType.get<TypeSourceInfo*>()->getType();
|
|
}
|
|
|
|
/// \brief Set the underlying integer type.
|
|
void setIntegerType(QualType T) { IntegerType = T.getTypePtrOrNull(); }
|
|
|
|
/// \brief Set the underlying integer type source info.
|
|
void setIntegerTypeSourceInfo(TypeSourceInfo* TInfo) { IntegerType = TInfo; }
|
|
|
|
/// \brief Return the type source info for the underlying integer type,
|
|
/// if no type source info exists, return 0.
|
|
TypeSourceInfo* getIntegerTypeSourceInfo() const {
|
|
return IntegerType.dyn_cast<TypeSourceInfo*>();
|
|
}
|
|
|
|
/// \brief Returns the width in bits required to store all the
|
|
/// non-negative enumerators of this enum.
|
|
unsigned getNumPositiveBits() const {
|
|
return NumPositiveBits;
|
|
}
|
|
void setNumPositiveBits(unsigned Num) {
|
|
NumPositiveBits = Num;
|
|
assert(NumPositiveBits == Num && "can't store this bitcount");
|
|
}
|
|
|
|
/// \brief Returns the width in bits required to store all the
|
|
/// negative enumerators of this enum. These widths include
|
|
/// the rightmost leading 1; that is:
|
|
///
|
|
/// MOST NEGATIVE ENUMERATOR PATTERN NUM NEGATIVE BITS
|
|
/// ------------------------ ------- -----------------
|
|
/// -1 1111111 1
|
|
/// -10 1110110 5
|
|
/// -101 1001011 8
|
|
unsigned getNumNegativeBits() const {
|
|
return NumNegativeBits;
|
|
}
|
|
void setNumNegativeBits(unsigned Num) {
|
|
NumNegativeBits = Num;
|
|
}
|
|
|
|
/// \brief Returns true if this is a C++11 scoped enumeration.
|
|
bool isScoped() const {
|
|
return IsScoped;
|
|
}
|
|
|
|
/// \brief Returns true if this is a C++11 scoped enumeration.
|
|
bool isScopedUsingClassTag() const {
|
|
return IsScopedUsingClassTag;
|
|
}
|
|
|
|
/// \brief Returns true if this is an Objective-C, C++11, or
|
|
/// Microsoft-style enumeration with a fixed underlying type.
|
|
bool isFixed() const {
|
|
return IsFixed;
|
|
}
|
|
|
|
/// \brief Returns true if this can be considered a complete type.
|
|
bool isComplete() const {
|
|
return isCompleteDefinition() || isFixed();
|
|
}
|
|
|
|
/// \brief Returns the enumeration (declared within the template)
|
|
/// from which this enumeration type was instantiated, or NULL if
|
|
/// this enumeration was not instantiated from any template.
|
|
EnumDecl *getInstantiatedFromMemberEnum() const;
|
|
|
|
/// \brief If this enumeration is a member of a specialization of a
|
|
/// templated class, determine what kind of template specialization
|
|
/// or instantiation this is.
|
|
TemplateSpecializationKind getTemplateSpecializationKind() const;
|
|
|
|
/// \brief For an enumeration member that was instantiated from a member
|
|
/// enumeration of a templated class, set the template specialiation kind.
|
|
void setTemplateSpecializationKind(TemplateSpecializationKind TSK,
|
|
SourceLocation PointOfInstantiation = SourceLocation());
|
|
|
|
/// \brief If this enumeration is an instantiation of a member enumeration of
|
|
/// a class template specialization, retrieves the member specialization
|
|
/// information.
|
|
MemberSpecializationInfo *getMemberSpecializationInfo() const {
|
|
return SpecializationInfo;
|
|
}
|
|
|
|
/// \brief Specify that this enumeration is an instantiation of the
|
|
/// member enumeration ED.
|
|
void setInstantiationOfMemberEnum(EnumDecl *ED,
|
|
TemplateSpecializationKind TSK) {
|
|
setInstantiationOfMemberEnum(getASTContext(), ED, TSK);
|
|
}
|
|
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K == Enum; }
|
|
|
|
friend class ASTDeclReader;
|
|
};
|
|
|
|
|
|
/// RecordDecl - Represents a struct/union/class. For example:
|
|
/// struct X; // Forward declaration, no "body".
|
|
/// union Y { int A, B; }; // Has body with members A and B (FieldDecls).
|
|
/// This decl will be marked invalid if *any* members are invalid.
|
|
///
|
|
class RecordDecl : public TagDecl {
|
|
// FIXME: This can be packed into the bitfields in Decl.
|
|
/// HasFlexibleArrayMember - This is true if this struct ends with a flexible
|
|
/// array member (e.g. int X[]) or if this union contains a struct that does.
|
|
/// If so, this cannot be contained in arrays or other structs as a member.
|
|
bool HasFlexibleArrayMember : 1;
|
|
|
|
/// AnonymousStructOrUnion - Whether this is the type of an anonymous struct
|
|
/// or union.
|
|
bool AnonymousStructOrUnion : 1;
|
|
|
|
/// HasObjectMember - This is true if this struct has at least one member
|
|
/// containing an Objective-C object pointer type.
|
|
bool HasObjectMember : 1;
|
|
|
|
/// HasVolatileMember - This is true if struct has at least one member of
|
|
/// 'volatile' type.
|
|
bool HasVolatileMember : 1;
|
|
|
|
/// \brief Whether the field declarations of this record have been loaded
|
|
/// from external storage. To avoid unnecessary deserialization of
|
|
/// methods/nested types we allow deserialization of just the fields
|
|
/// when needed.
|
|
mutable bool LoadedFieldsFromExternalStorage : 1;
|
|
friend class DeclContext;
|
|
|
|
protected:
|
|
RecordDecl(Kind DK, TagKind TK, DeclContext *DC,
|
|
SourceLocation StartLoc, SourceLocation IdLoc,
|
|
IdentifierInfo *Id, RecordDecl *PrevDecl);
|
|
|
|
public:
|
|
static RecordDecl *Create(const ASTContext &C, TagKind TK, DeclContext *DC,
|
|
SourceLocation StartLoc, SourceLocation IdLoc,
|
|
IdentifierInfo *Id, RecordDecl* PrevDecl = 0);
|
|
static RecordDecl *CreateDeserialized(const ASTContext &C, unsigned ID);
|
|
|
|
const RecordDecl *getPreviousDecl() const {
|
|
return cast_or_null<RecordDecl>(TagDecl::getPreviousDecl());
|
|
}
|
|
RecordDecl *getPreviousDecl() {
|
|
return cast_or_null<RecordDecl>(TagDecl::getPreviousDecl());
|
|
}
|
|
|
|
const RecordDecl *getMostRecentDecl() const {
|
|
return cast<RecordDecl>(TagDecl::getMostRecentDecl());
|
|
}
|
|
RecordDecl *getMostRecentDecl() {
|
|
return cast<RecordDecl>(TagDecl::getMostRecentDecl());
|
|
}
|
|
|
|
bool hasFlexibleArrayMember() const { return HasFlexibleArrayMember; }
|
|
void setHasFlexibleArrayMember(bool V) { HasFlexibleArrayMember = V; }
|
|
|
|
/// isAnonymousStructOrUnion - Whether this is an anonymous struct
|
|
/// or union. To be an anonymous struct or union, it must have been
|
|
/// declared without a name and there must be no objects of this
|
|
/// type declared, e.g.,
|
|
/// @code
|
|
/// union { int i; float f; };
|
|
/// @endcode
|
|
/// is an anonymous union but neither of the following are:
|
|
/// @code
|
|
/// union X { int i; float f; };
|
|
/// union { int i; float f; } obj;
|
|
/// @endcode
|
|
bool isAnonymousStructOrUnion() const { return AnonymousStructOrUnion; }
|
|
void setAnonymousStructOrUnion(bool Anon) {
|
|
AnonymousStructOrUnion = Anon;
|
|
}
|
|
|
|
bool hasObjectMember() const { return HasObjectMember; }
|
|
void setHasObjectMember (bool val) { HasObjectMember = val; }
|
|
|
|
bool hasVolatileMember() const { return HasVolatileMember; }
|
|
void setHasVolatileMember (bool val) { HasVolatileMember = val; }
|
|
|
|
/// \brief Determines whether this declaration represents the
|
|
/// injected class name.
|
|
///
|
|
/// The injected class name in C++ is the name of the class that
|
|
/// appears inside the class itself. For example:
|
|
///
|
|
/// \code
|
|
/// struct C {
|
|
/// // C is implicitly declared here as a synonym for the class name.
|
|
/// };
|
|
///
|
|
/// C::C c; // same as "C c;"
|
|
/// \endcode
|
|
bool isInjectedClassName() const;
|
|
|
|
/// getDefinition - Returns the RecordDecl that actually defines
|
|
/// this struct/union/class. When determining whether or not a
|
|
/// struct/union/class is completely defined, one should use this
|
|
/// method as opposed to 'isCompleteDefinition'.
|
|
/// 'isCompleteDefinition' indicates whether or not a specific
|
|
/// RecordDecl is a completed definition, not whether or not the
|
|
/// record type is defined. This method returns NULL if there is
|
|
/// no RecordDecl that defines the struct/union/tag.
|
|
RecordDecl *getDefinition() const {
|
|
return cast_or_null<RecordDecl>(TagDecl::getDefinition());
|
|
}
|
|
|
|
// Iterator access to field members. The field iterator only visits
|
|
// the non-static data members of this class, ignoring any static
|
|
// data members, functions, constructors, destructors, etc.
|
|
typedef specific_decl_iterator<FieldDecl> field_iterator;
|
|
|
|
field_iterator field_begin() const;
|
|
|
|
field_iterator field_end() const {
|
|
return field_iterator(decl_iterator());
|
|
}
|
|
|
|
// field_empty - Whether there are any fields (non-static data
|
|
// members) in this record.
|
|
bool field_empty() const {
|
|
return field_begin() == field_end();
|
|
}
|
|
|
|
/// completeDefinition - Notes that the definition of this type is
|
|
/// now complete.
|
|
virtual void completeDefinition();
|
|
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) {
|
|
return K >= firstRecord && K <= lastRecord;
|
|
}
|
|
|
|
/// isMsStrust - Get whether or not this is an ms_struct which can
|
|
/// be turned on with an attribute, pragma, or -mms-bitfields
|
|
/// commandline option.
|
|
bool isMsStruct(const ASTContext &C) const;
|
|
|
|
private:
|
|
/// \brief Deserialize just the fields.
|
|
void LoadFieldsFromExternalStorage() const;
|
|
};
|
|
|
|
class FileScopeAsmDecl : public Decl {
|
|
virtual void anchor();
|
|
StringLiteral *AsmString;
|
|
SourceLocation RParenLoc;
|
|
FileScopeAsmDecl(DeclContext *DC, StringLiteral *asmstring,
|
|
SourceLocation StartL, SourceLocation EndL)
|
|
: Decl(FileScopeAsm, DC, StartL), AsmString(asmstring), RParenLoc(EndL) {}
|
|
public:
|
|
static FileScopeAsmDecl *Create(ASTContext &C, DeclContext *DC,
|
|
StringLiteral *Str, SourceLocation AsmLoc,
|
|
SourceLocation RParenLoc);
|
|
|
|
static FileScopeAsmDecl *CreateDeserialized(ASTContext &C, unsigned ID);
|
|
|
|
SourceLocation getAsmLoc() const { return getLocation(); }
|
|
SourceLocation getRParenLoc() const { return RParenLoc; }
|
|
void setRParenLoc(SourceLocation L) { RParenLoc = L; }
|
|
SourceRange getSourceRange() const LLVM_READONLY {
|
|
return SourceRange(getAsmLoc(), getRParenLoc());
|
|
}
|
|
|
|
const StringLiteral *getAsmString() const { return AsmString; }
|
|
StringLiteral *getAsmString() { return AsmString; }
|
|
void setAsmString(StringLiteral *Asm) { AsmString = Asm; }
|
|
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K == FileScopeAsm; }
|
|
};
|
|
|
|
/// BlockDecl - This represents a block literal declaration, which is like an
|
|
/// unnamed FunctionDecl. For example:
|
|
/// ^{ statement-body } or ^(int arg1, float arg2){ statement-body }
|
|
///
|
|
class BlockDecl : public Decl, public DeclContext {
|
|
public:
|
|
/// A class which contains all the information about a particular
|
|
/// captured value.
|
|
class Capture {
|
|
enum {
|
|
flag_isByRef = 0x1,
|
|
flag_isNested = 0x2
|
|
};
|
|
|
|
/// The variable being captured.
|
|
llvm::PointerIntPair<VarDecl*, 2> VariableAndFlags;
|
|
|
|
/// The copy expression, expressed in terms of a DeclRef (or
|
|
/// BlockDeclRef) to the captured variable. Only required if the
|
|
/// variable has a C++ class type.
|
|
Expr *CopyExpr;
|
|
|
|
public:
|
|
Capture(VarDecl *variable, bool byRef, bool nested, Expr *copy)
|
|
: VariableAndFlags(variable,
|
|
(byRef ? flag_isByRef : 0) | (nested ? flag_isNested : 0)),
|
|
CopyExpr(copy) {}
|
|
|
|
/// The variable being captured.
|
|
VarDecl *getVariable() const { return VariableAndFlags.getPointer(); }
|
|
|
|
/// Whether this is a "by ref" capture, i.e. a capture of a __block
|
|
/// variable.
|
|
bool isByRef() const { return VariableAndFlags.getInt() & flag_isByRef; }
|
|
|
|
/// Whether this is a nested capture, i.e. the variable captured
|
|
/// is not from outside the immediately enclosing function/block.
|
|
bool isNested() const { return VariableAndFlags.getInt() & flag_isNested; }
|
|
|
|
bool hasCopyExpr() const { return CopyExpr != 0; }
|
|
Expr *getCopyExpr() const { return CopyExpr; }
|
|
void setCopyExpr(Expr *e) { CopyExpr = e; }
|
|
};
|
|
|
|
private:
|
|
// FIXME: This can be packed into the bitfields in Decl.
|
|
bool IsVariadic : 1;
|
|
bool CapturesCXXThis : 1;
|
|
bool BlockMissingReturnType : 1;
|
|
bool IsConversionFromLambda : 1;
|
|
/// ParamInfo - new[]'d array of pointers to ParmVarDecls for the formal
|
|
/// parameters of this function. This is null if a prototype or if there are
|
|
/// no formals.
|
|
ParmVarDecl **ParamInfo;
|
|
unsigned NumParams;
|
|
|
|
Stmt *Body;
|
|
TypeSourceInfo *SignatureAsWritten;
|
|
|
|
Capture *Captures;
|
|
unsigned NumCaptures;
|
|
|
|
protected:
|
|
BlockDecl(DeclContext *DC, SourceLocation CaretLoc)
|
|
: Decl(Block, DC, CaretLoc), DeclContext(Block),
|
|
IsVariadic(false), CapturesCXXThis(false),
|
|
BlockMissingReturnType(true), IsConversionFromLambda(false),
|
|
ParamInfo(0), NumParams(0), Body(0),
|
|
SignatureAsWritten(0), Captures(0), NumCaptures(0) {}
|
|
|
|
public:
|
|
static BlockDecl *Create(ASTContext &C, DeclContext *DC, SourceLocation L);
|
|
static BlockDecl *CreateDeserialized(ASTContext &C, unsigned ID);
|
|
|
|
SourceLocation getCaretLocation() const { return getLocation(); }
|
|
|
|
bool isVariadic() const { return IsVariadic; }
|
|
void setIsVariadic(bool value) { IsVariadic = value; }
|
|
|
|
CompoundStmt *getCompoundBody() const { return (CompoundStmt*) Body; }
|
|
Stmt *getBody() const { return (Stmt*) Body; }
|
|
void setBody(CompoundStmt *B) { Body = (Stmt*) B; }
|
|
|
|
void setSignatureAsWritten(TypeSourceInfo *Sig) { SignatureAsWritten = Sig; }
|
|
TypeSourceInfo *getSignatureAsWritten() const { return SignatureAsWritten; }
|
|
|
|
// Iterator access to formal parameters.
|
|
unsigned param_size() const { return getNumParams(); }
|
|
typedef ParmVarDecl **param_iterator;
|
|
typedef ParmVarDecl * const *param_const_iterator;
|
|
|
|
bool param_empty() const { return NumParams == 0; }
|
|
param_iterator param_begin() { return ParamInfo; }
|
|
param_iterator param_end() { return ParamInfo+param_size(); }
|
|
|
|
param_const_iterator param_begin() const { return ParamInfo; }
|
|
param_const_iterator param_end() const { return ParamInfo+param_size(); }
|
|
|
|
unsigned getNumParams() const { return NumParams; }
|
|
const ParmVarDecl *getParamDecl(unsigned i) const {
|
|
assert(i < getNumParams() && "Illegal param #");
|
|
return ParamInfo[i];
|
|
}
|
|
ParmVarDecl *getParamDecl(unsigned i) {
|
|
assert(i < getNumParams() && "Illegal param #");
|
|
return ParamInfo[i];
|
|
}
|
|
void setParams(ArrayRef<ParmVarDecl *> NewParamInfo);
|
|
|
|
/// hasCaptures - True if this block (or its nested blocks) captures
|
|
/// anything of local storage from its enclosing scopes.
|
|
bool hasCaptures() const { return NumCaptures != 0 || CapturesCXXThis; }
|
|
|
|
/// getNumCaptures - Returns the number of captured variables.
|
|
/// Does not include an entry for 'this'.
|
|
unsigned getNumCaptures() const { return NumCaptures; }
|
|
|
|
typedef const Capture *capture_iterator;
|
|
typedef const Capture *capture_const_iterator;
|
|
capture_iterator capture_begin() { return Captures; }
|
|
capture_iterator capture_end() { return Captures + NumCaptures; }
|
|
capture_const_iterator capture_begin() const { return Captures; }
|
|
capture_const_iterator capture_end() const { return Captures + NumCaptures; }
|
|
|
|
bool capturesCXXThis() const { return CapturesCXXThis; }
|
|
bool blockMissingReturnType() const { return BlockMissingReturnType; }
|
|
void setBlockMissingReturnType(bool val) { BlockMissingReturnType = val; }
|
|
|
|
bool isConversionFromLambda() const { return IsConversionFromLambda; }
|
|
void setIsConversionFromLambda(bool val) { IsConversionFromLambda = val; }
|
|
|
|
bool capturesVariable(const VarDecl *var) const;
|
|
|
|
void setCaptures(ASTContext &Context,
|
|
const Capture *begin,
|
|
const Capture *end,
|
|
bool capturesCXXThis);
|
|
|
|
virtual SourceRange getSourceRange() const LLVM_READONLY;
|
|
|
|
// Implement isa/cast/dyncast/etc.
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K == Block; }
|
|
static DeclContext *castToDeclContext(const BlockDecl *D) {
|
|
return static_cast<DeclContext *>(const_cast<BlockDecl*>(D));
|
|
}
|
|
static BlockDecl *castFromDeclContext(const DeclContext *DC) {
|
|
return static_cast<BlockDecl *>(const_cast<DeclContext*>(DC));
|
|
}
|
|
};
|
|
|
|
/// \brief This represents the body of a CapturedStmt, and serves as its
|
|
/// DeclContext.
|
|
class CapturedDecl : public Decl, public DeclContext {
|
|
private:
|
|
Stmt *Body;
|
|
|
|
explicit CapturedDecl(DeclContext *DC)
|
|
: Decl(Captured, DC, SourceLocation()), DeclContext(Captured) { }
|
|
|
|
public:
|
|
static CapturedDecl *Create(ASTContext &C, DeclContext *DC);
|
|
|
|
Stmt *getBody() const { return Body; }
|
|
void setBody(Stmt *B) { Body = B; }
|
|
|
|
// Implement isa/cast/dyncast/etc.
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K == Captured; }
|
|
static DeclContext *castToDeclContext(const CapturedDecl *D) {
|
|
return static_cast<DeclContext *>(const_cast<CapturedDecl *>(D));
|
|
}
|
|
static CapturedDecl *castFromDeclContext(const DeclContext *DC) {
|
|
return static_cast<CapturedDecl *>(const_cast<DeclContext *>(DC));
|
|
}
|
|
};
|
|
|
|
/// \brief Describes a module import declaration, which makes the contents
|
|
/// of the named module visible in the current translation unit.
|
|
///
|
|
/// An import declaration imports the named module (or submodule). For example:
|
|
/// \code
|
|
/// @import std.vector;
|
|
/// \endcode
|
|
///
|
|
/// Import declarations can also be implicitly generated from
|
|
/// \#include/\#import directives.
|
|
class ImportDecl : public Decl {
|
|
/// \brief The imported module, along with a bit that indicates whether
|
|
/// we have source-location information for each identifier in the module
|
|
/// name.
|
|
///
|
|
/// When the bit is false, we only have a single source location for the
|
|
/// end of the import declaration.
|
|
llvm::PointerIntPair<Module *, 1, bool> ImportedAndComplete;
|
|
|
|
/// \brief The next import in the list of imports local to the translation
|
|
/// unit being parsed (not loaded from an AST file).
|
|
ImportDecl *NextLocalImport;
|
|
|
|
friend class ASTReader;
|
|
friend class ASTDeclReader;
|
|
friend class ASTContext;
|
|
|
|
ImportDecl(DeclContext *DC, SourceLocation StartLoc, Module *Imported,
|
|
ArrayRef<SourceLocation> IdentifierLocs);
|
|
|
|
ImportDecl(DeclContext *DC, SourceLocation StartLoc, Module *Imported,
|
|
SourceLocation EndLoc);
|
|
|
|
ImportDecl(EmptyShell Empty) : Decl(Import, Empty), NextLocalImport() { }
|
|
|
|
public:
|
|
/// \brief Create a new module import declaration.
|
|
static ImportDecl *Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation StartLoc, Module *Imported,
|
|
ArrayRef<SourceLocation> IdentifierLocs);
|
|
|
|
/// \brief Create a new module import declaration for an implicitly-generated
|
|
/// import.
|
|
static ImportDecl *CreateImplicit(ASTContext &C, DeclContext *DC,
|
|
SourceLocation StartLoc, Module *Imported,
|
|
SourceLocation EndLoc);
|
|
|
|
/// \brief Create a new, deserialized module import declaration.
|
|
static ImportDecl *CreateDeserialized(ASTContext &C, unsigned ID,
|
|
unsigned NumLocations);
|
|
|
|
/// \brief Retrieve the module that was imported by the import declaration.
|
|
Module *getImportedModule() const { return ImportedAndComplete.getPointer(); }
|
|
|
|
/// \brief Retrieves the locations of each of the identifiers that make up
|
|
/// the complete module name in the import declaration.
|
|
///
|
|
/// This will return an empty array if the locations of the individual
|
|
/// identifiers aren't available.
|
|
ArrayRef<SourceLocation> getIdentifierLocs() const;
|
|
|
|
virtual SourceRange getSourceRange() const LLVM_READONLY;
|
|
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K == Import; }
|
|
};
|
|
|
|
/// \brief Represents an empty-declaration.
|
|
class EmptyDecl : public Decl {
|
|
virtual void anchor();
|
|
EmptyDecl(DeclContext *DC, SourceLocation L)
|
|
: Decl(Empty, DC, L) { }
|
|
|
|
public:
|
|
static EmptyDecl *Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation L);
|
|
static EmptyDecl *CreateDeserialized(ASTContext &C, unsigned ID);
|
|
|
|
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
|
|
static bool classofKind(Kind K) { return K == Empty; }
|
|
};
|
|
|
|
/// Insertion operator for diagnostics. This allows sending NamedDecl's
|
|
/// into a diagnostic with <<.
|
|
inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB,
|
|
const NamedDecl* ND) {
|
|
DB.AddTaggedVal(reinterpret_cast<intptr_t>(ND),
|
|
DiagnosticsEngine::ak_nameddecl);
|
|
return DB;
|
|
}
|
|
inline const PartialDiagnostic &operator<<(const PartialDiagnostic &PD,
|
|
const NamedDecl* ND) {
|
|
PD.AddTaggedVal(reinterpret_cast<intptr_t>(ND),
|
|
DiagnosticsEngine::ak_nameddecl);
|
|
return PD;
|
|
}
|
|
|
|
template<typename decl_type>
|
|
void Redeclarable<decl_type>::setPreviousDeclaration(decl_type *PrevDecl) {
|
|
// Note: This routine is implemented here because we need both NamedDecl
|
|
// and Redeclarable to be defined.
|
|
|
|
decl_type *First;
|
|
|
|
if (PrevDecl) {
|
|
// Point to previous. Make sure that this is actually the most recent
|
|
// redeclaration, or we can build invalid chains. If the most recent
|
|
// redeclaration is invalid, it won't be PrevDecl, but we want it anyway.
|
|
First = PrevDecl->getFirstDeclaration();
|
|
assert(First->RedeclLink.NextIsLatest() && "Expected first");
|
|
decl_type *MostRecent = First->RedeclLink.getNext();
|
|
RedeclLink = PreviousDeclLink(cast<decl_type>(MostRecent));
|
|
} else {
|
|
// Make this first.
|
|
First = static_cast<decl_type*>(this);
|
|
}
|
|
|
|
// First one will point to this one as latest.
|
|
First->RedeclLink = LatestDeclLink(static_cast<decl_type*>(this));
|
|
assert(!isa<NamedDecl>(static_cast<decl_type*>(this)) ||
|
|
cast<NamedDecl>(static_cast<decl_type*>(this))->isLinkageValid());
|
|
}
|
|
|
|
// Inline function definitions.
|
|
|
|
/// \brief Check if the given decl is complete.
|
|
///
|
|
/// We use this function to break a cycle between the inline definitions in
|
|
/// Type.h and Decl.h.
|
|
inline bool IsEnumDeclComplete(EnumDecl *ED) {
|
|
return ED->isComplete();
|
|
}
|
|
|
|
/// \brief Check if the given decl is scoped.
|
|
///
|
|
/// We use this function to break a cycle between the inline definitions in
|
|
/// Type.h and Decl.h.
|
|
inline bool IsEnumDeclScoped(EnumDecl *ED) {
|
|
return ED->isScoped();
|
|
}
|
|
|
|
} // end namespace clang
|
|
|
|
#endif
|