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📄 APValue.h(20.92 KB)
📄 AST.h(907 B)
📄 ASTConcept.h(7.02 KB)
📄 ASTConsumer.h(5.99 KB)
📄 ASTContext.h(122.68 KB)
📄 ASTContextAllocate.h(1.33 KB)
📄 ASTDiagnostic.h(1.34 KB)
📄 ASTDumper.h(1.59 KB)
📄 ASTDumperUtils.h(3.49 KB)
📄 ASTFwd.h(1.01 KB)
📄 ASTImporter.h(22.86 KB)
📄 ASTImporterLookupTable.h(2.7 KB)
📄 ASTImporterSharedState.h(2.51 KB)
📄 ASTLambda.h(3.04 KB)
📄 ASTMutationListener.h(5.84 KB)
📄 ASTNodeTraverser.h(21.38 KB)
📄 ASTStructuralEquivalence.h(5.08 KB)
📄 ASTTypeTraits.h(19.65 KB)
📄 ASTUnresolvedSet.h(3.37 KB)
📄 ASTVector.h(11.75 KB)
📄 AbstractBasicReader.h(8.82 KB)
📄 AbstractBasicWriter.h(7.97 KB)
📄 AbstractTypeReader.h(922 B)
📄 AbstractTypeWriter.h(944 B)
📄 Attr.h(11.87 KB)
📄 AttrIterator.h(4.14 KB)
📄 AttrVisitor.h(2.56 KB)
📄 Availability.h(1.97 KB)
📄 BaseSubobject.h(2.74 KB)
📄 BuiltinTypes.def(9.91 KB)
📄 CXXInheritance.h(14.87 KB)
📄 CXXRecordDeclDefinitionBits.def(9.23 KB)
📄 CanonicalType.h(24.86 KB)
📄 CharUnits.h(8.02 KB)
📄 Comment.h(31.03 KB)
📄 CommentBriefParser.h(1.39 KB)
📄 CommentCommandTraits.h(5.86 KB)
📄 CommentCommands.td(9.27 KB)
📄 CommentDiagnostic.h(509 B)
📄 CommentHTMLNamedCharacterReferences.td(4.98 KB)
📄 CommentHTMLTags.td(2.17 KB)
📄 CommentLexer.h(9.96 KB)
📄 CommentParser.h(3.24 KB)
📄 CommentSema.h(9.87 KB)
📄 CommentVisitor.h(2.38 KB)
📄 ComparisonCategories.h(7.41 KB)
📄 ComputeDependence.h(7.41 KB)
📄 CurrentSourceLocExprScope.h(2.43 KB)
📄 DataCollection.h(2.45 KB)
📄 Decl.h(168.07 KB)
📄 DeclAccessPair.h(1.77 KB)
📄 DeclBase.h(93.13 KB)
📄 DeclCXX.h(151.69 KB)
📄 DeclContextInternals.h(8.22 KB)
📄 DeclFriend.h(8.06 KB)
📄 DeclGroup.h(4.11 KB)
📄 DeclLookups.h(3.64 KB)
📄 DeclObjC.h(101.2 KB)
📄 DeclObjCCommon.h(1.72 KB)
📄 DeclOpenMP.h(19.33 KB)
📄 DeclTemplate.h(122.19 KB)
📄 DeclVisitor.h(2.51 KB)
📄 DeclarationName.h(33.77 KB)
📄 DependenceFlags.h(10.99 KB)
📄 DependentDiagnostic.h(5.4 KB)
📄 EvaluatedExprVisitor.h(4.45 KB)
📄 Expr.h(234.85 KB)
📄 ExprCXX.h(169.78 KB)
📄 ExprConcepts.h(19.62 KB)
📄 ExprObjC.h(58.96 KB)
📄 ExprOpenMP.h(15.48 KB)
📄 ExternalASTMerger.h(8.11 KB)
📄 ExternalASTSource.h(20.55 KB)
📄 FormatString.h(22.81 KB)
📄 GlobalDecl.h(7.16 KB)
📄 JSONNodeDumper.h(17.53 KB)
📄 LambdaCapture.h(4.71 KB)
📄 LexicallyOrderedRecursiveASTVisitor.h(5.92 KB)
📄 LocInfoType.h(1.84 KB)
📄 Mangle.h(10.65 KB)
📄 MangleNumberingContext.h(2 KB)
📄 NSAPI.h(9.23 KB)
📄 NestedNameSpecifier.h(18.53 KB)
📄 NonTrivialTypeVisitor.h(4 KB)
📄 ODRHash.h(3.42 KB)
📄 OSLog.h(5.08 KB)
📄 OpenMPClause.h(276.08 KB)
📄 OperationKinds.def(14.91 KB)
📄 OperationKinds.h(1.5 KB)
📄 OptionalDiagnostic.h(2.39 KB)
📄 ParentMap.h(1.89 KB)
📄 ParentMapContext.h(4.74 KB)
📄 PrettyDeclStackTrace.h(1.39 KB)
📄 PrettyPrinter.h(8.47 KB)
📄 PropertiesBase.td(17.03 KB)
📄 QualTypeNames.h(3.15 KB)
📄 RawCommentList.h(6.6 KB)
📄 RecordLayout.h(11.49 KB)
📄 RecursiveASTVisitor.h(124.41 KB)
📄 Redeclarable.h(14.34 KB)
📄 SelectorLocationsKind.h(3.28 KB)
📄 Stmt.h(113 KB)
📄 StmtCXX.h(17.59 KB)
📄 StmtDataCollectors.td(5.64 KB)
📄 StmtGraphTraits.h(2.18 KB)
📄 StmtIterator.h(4.2 KB)
📄 StmtObjC.h(12.86 KB)
📄 StmtOpenMP.h(189.5 KB)
📄 StmtVisitor.h(8.74 KB)
📄 TemplateArgumentVisitor.h(3.38 KB)
📄 TemplateBase.h(22.86 KB)
📄 TemplateName.h(19.34 KB)
📄 TextNodeDumper.h(15.7 KB)
📄 Type.h(248.38 KB)
📄 TypeLoc.h(73.03 KB)
📄 TypeLocNodes.def(1.45 KB)
📄 TypeLocVisitor.h(1.76 KB)
📄 TypeOrdering.h(2.38 KB)
📄 TypeProperties.td(25.87 KB)
📄 TypeVisitor.h(3.32 KB)
📄 UnresolvedSet.h(5.25 KB)
📄 VTTBuilder.h(5.19 KB)
📄 VTableBuilder.h(20.31 KB)

Editing: DeclFriend.h

//===- DeclFriend.h - Classes for C++ friend declarations -------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines the section of the AST representing C++ friend
// declarations.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_AST_DECLFRIEND_H
#define LLVM_CLANG_AST_DECLFRIEND_H

#include "clang/AST/Decl.h"
#include "clang/AST/DeclBase.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/ExternalASTSource.h"
#include "clang/AST/TypeLoc.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/SourceLocation.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/None.h"
#include "llvm/ADT/PointerUnion.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/TrailingObjects.h"
#include <cassert>
#include <iterator>

namespace clang {

class ASTContext;

/// FriendDecl - Represents the declaration of a friend entity,
/// which can be a function, a type, or a templated function or type.
/// For example:
///
/// @code
/// template <typename T> class A {
///   friend int foo(T);
///   friend class B;
///   friend T; // only in C++0x
///   template <typename U> friend class C;
///   template <typename U> friend A& operator+=(A&, const U&) { ... }
/// };
/// @endcode
///
/// The semantic context of a friend decl is its declaring class.
class FriendDecl final
    : public Decl,
      private llvm::TrailingObjects<FriendDecl, TemplateParameterList *> {
  virtual void anchor();

public:
  using FriendUnion = llvm::PointerUnion<NamedDecl *, TypeSourceInfo *>;

private:
  friend class CXXRecordDecl;
  friend class CXXRecordDecl::friend_iterator;

// The declaration that's a friend of this class.
  FriendUnion Friend;

// A pointer to the next friend in the sequence.
  LazyDeclPtr NextFriend;

// Location of the 'friend' specifier.
  SourceLocation FriendLoc;

/// True if this 'friend' declaration is unsupported.  Eventually we
  /// will support every possible friend declaration, but for now we
  /// silently ignore some and set this flag to authorize all access.
  unsigned UnsupportedFriend : 1;

// The number of "outer" template parameter lists in non-templatic
  // (currently unsupported) friend type declarations, such as
  //     template <class T> friend class A<T>::B;
  unsigned NumTPLists : 31;

FriendDecl(DeclContext *DC, SourceLocation L, FriendUnion Friend,
             SourceLocation FriendL,
             ArrayRef<TemplateParameterList *> FriendTypeTPLists)
      : Decl(Decl::Friend, DC, L), Friend(Friend), FriendLoc(FriendL),
        UnsupportedFriend(false), NumTPLists(FriendTypeTPLists.size()) {
    for (unsigned i = 0; i < NumTPLists; ++i)
      getTrailingObjects<TemplateParameterList *>()[i] = FriendTypeTPLists[i];
  }

FriendDecl(EmptyShell Empty, unsigned NumFriendTypeTPLists)
      : Decl(Decl::Friend, Empty), UnsupportedFriend(false),
        NumTPLists(NumFriendTypeTPLists) {}

FriendDecl *getNextFriend() {
    if (!NextFriend.isOffset())
      return cast_or_null<FriendDecl>(NextFriend.get(nullptr));
    return getNextFriendSlowCase();
  }

FriendDecl *getNextFriendSlowCase();

public:
  friend class ASTDeclReader;
  friend class ASTDeclWriter;
  friend class ASTNodeImporter;
  friend TrailingObjects;

static FriendDecl *Create(ASTContext &C, DeclContext *DC,
                            SourceLocation L, FriendUnion Friend_,
                            SourceLocation FriendL,
                            ArrayRef<TemplateParameterList*> FriendTypeTPLists
                            = None);
  static FriendDecl *CreateDeserialized(ASTContext &C, unsigned ID,
                                        unsigned FriendTypeNumTPLists);

/// If this friend declaration names an (untemplated but possibly
  /// dependent) type, return the type; otherwise return null.  This
  /// is used for elaborated-type-specifiers and, in C++0x, for
  /// arbitrary friend type declarations.
  TypeSourceInfo *getFriendType() const {
    return Friend.dyn_cast<TypeSourceInfo*>();
  }

unsigned getFriendTypeNumTemplateParameterLists() const {
    return NumTPLists;
  }

TemplateParameterList *getFriendTypeTemplateParameterList(unsigned N) const {
    assert(N < NumTPLists);
    return getTrailingObjects<TemplateParameterList *>()[N];
  }

/// If this friend declaration doesn't name a type, return the inner
  /// declaration.
  NamedDecl *getFriendDecl() const {
    return Friend.dyn_cast<NamedDecl *>();
  }

/// Retrieves the location of the 'friend' keyword.
  SourceLocation getFriendLoc() const {
    return FriendLoc;
  }

/// Retrieves the source range for the friend declaration.
  SourceRange getSourceRange() const override LLVM_READONLY {
    if (NamedDecl *ND = getFriendDecl()) {
      if (const auto *FD = dyn_cast<FunctionDecl>(ND))
        return FD->getSourceRange();
      if (const auto *FTD = dyn_cast<FunctionTemplateDecl>(ND))
        return FTD->getSourceRange();
      if (const auto *CTD = dyn_cast<ClassTemplateDecl>(ND))
        return CTD->getSourceRange();
      if (const auto *DD = dyn_cast<DeclaratorDecl>(ND)) {
        if (DD->getOuterLocStart() != DD->getInnerLocStart())
          return DD->getSourceRange();
      }
      return SourceRange(getFriendLoc(), ND->getEndLoc());
    }
    else if (TypeSourceInfo *TInfo = getFriendType()) {
      SourceLocation StartL =
          (NumTPLists == 0) ? getFriendLoc()
                            : getTrailingObjects<TemplateParameterList *>()[0]
                                  ->getTemplateLoc();
      return SourceRange(StartL, TInfo->getTypeLoc().getEndLoc());
    }
    else
      return SourceRange(getFriendLoc(), getLocation());
  }

/// Determines if this friend kind is unsupported.
  bool isUnsupportedFriend() const {
    return UnsupportedFriend;
  }
  void setUnsupportedFriend(bool Unsupported) {
    UnsupportedFriend = Unsupported;
  }

// Implement isa/cast/dyncast/etc.
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
  static bool classofKind(Kind K) { return K == Decl::Friend; }
};

/// An iterator over the friend declarations of a class.
class CXXRecordDecl::friend_iterator {
  friend class CXXRecordDecl;

FriendDecl *Ptr;

explicit friend_iterator(FriendDecl *Ptr) : Ptr(Ptr) {}

public:
  friend_iterator() = default;

using value_type = FriendDecl *;
  using reference = FriendDecl *;
  using pointer = FriendDecl *;
  using difference_type = int;
  using iterator_category = std::forward_iterator_tag;

reference operator*() const { return Ptr; }

friend_iterator &operator++() {
    assert(Ptr && "attempt to increment past end of friend list");
    Ptr = Ptr->getNextFriend();
    return *this;
  }

friend_iterator operator++(int) {
    friend_iterator tmp = *this;
    ++*this;
    return tmp;
  }

bool operator==(const friend_iterator &Other) const {
    return Ptr == Other.Ptr;
  }

bool operator!=(const friend_iterator &Other) const {
    return Ptr != Other.Ptr;
  }

friend_iterator &operator+=(difference_type N) {
    assert(N >= 0 && "cannot rewind a CXXRecordDecl::friend_iterator");
    while (N--)
      ++*this;
    return *this;
  }

friend_iterator operator+(difference_type N) const {
    friend_iterator tmp = *this;
    tmp += N;
    return tmp;
  }
};

inline CXXRecordDecl::friend_iterator CXXRecordDecl::friend_begin() const {
  return friend_iterator(getFirstFriend());
}

inline CXXRecordDecl::friend_iterator CXXRecordDecl::friend_end() const {
  return friend_iterator(nullptr);
}

inline CXXRecordDecl::friend_range CXXRecordDecl::friends() const {
  return friend_range(friend_begin(), friend_end());
}

inline void CXXRecordDecl::pushFriendDecl(FriendDecl *FD) {
  assert(!FD->NextFriend && "friend already has next friend?");
  FD->NextFriend = data().FirstFriend;
  data().FirstFriend = FD;
}

} // namespace clang

#endif // LLVM_CLANG_AST_DECLFRIEND_H

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