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📄 APValue.cpp(23.33 KB)
📄 ASTConcept.cpp(2.7 KB)
📄 ASTConsumer.cpp(954 B)
📄 ASTContext.cpp(407.36 KB)
📄 ASTDiagnostic.cpp(75.78 KB)
📄 ASTDumper.cpp(9.52 KB)
📄 ASTImporter.cpp(323.93 KB)
📄 ASTImporterLookupTable.cpp(4.85 KB)
📄 ASTStructuralEquivalence.cpp(73.55 KB)
📄 ASTTypeTraits.cpp(6.42 KB)
📄 AttrImpl.cpp(5.3 KB)
📄 CXXABI.h(2.66 KB)
📄 CXXInheritance.cpp(28.55 KB)
📄 Comment.cpp(11.94 KB)
📄 CommentBriefParser.cpp(4.19 KB)
📄 CommentCommandTraits.cpp(4.63 KB)
📄 CommentLexer.cpp(25.38 KB)
📄 CommentParser.cpp(23.52 KB)
📄 CommentSema.cpp(40.88 KB)
📄 ComparisonCategories.cpp(7.23 KB)
📄 ComputeDependence.cpp(28.3 KB)
📄 DataCollection.cpp(1.83 KB)
📄 Decl.cpp(177.21 KB)
📄 DeclBase.cpp(63.37 KB)
📄 DeclCXX.cpp(127.53 KB)
📄 DeclFriend.cpp(2.76 KB)
📄 DeclGroup.cpp(1.16 KB)
📄 DeclObjC.cpp(82.05 KB)
📄 DeclOpenMP.cpp(10.04 KB)
📄 DeclPrinter.cpp(52.6 KB)
📄 DeclTemplate.cpp(57.75 KB)
📄 DeclarationName.cpp(17.52 KB)
📄 Expr.cpp(176.93 KB)
📄 ExprCXX.cpp(69.03 KB)
📄 ExprClassification.cpp(28.48 KB)
📄 ExprConcepts.cpp(9.43 KB)
📄 ExprConstant.cpp(538.88 KB)
📄 ExprObjC.cpp(14.25 KB)
📄 ExternalASTMerger.cpp(22.13 KB)
📄 ExternalASTSource.cpp(3.85 KB)
📄 FormatString.cpp(29.64 KB)
📄 FormatStringParsing.h(3.17 KB)
📄 InheritViz.cpp(5.1 KB)
📁 Interp
📄 ItaniumCXXABI.cpp(8.92 KB)
📄 ItaniumMangle.cpp(182.64 KB)
📄 JSONNodeDumper.cpp(58.07 KB)
📄 Linkage.h(6 KB)
📄 Mangle.cpp(17.71 KB)
📄 MicrosoftCXXABI.cpp(9.12 KB)
📄 MicrosoftMangle.cpp(133.01 KB)
📄 NSAPI.cpp(18.12 KB)
📄 NestedNameSpecifier.cpp(23.31 KB)
📄 ODRHash.cpp(29.78 KB)
📄 OSLog.cpp(7.61 KB)
📄 OpenMPClause.cpp(82.03 KB)
📄 ParentMap.cpp(5.97 KB)
📄 ParentMapContext.cpp(10.7 KB)
📄 PrintfFormatString.cpp(35.8 KB)
📄 QualTypeNames.cpp(18.46 KB)
📄 RawCommentList.cpp(15.52 KB)
📄 RecordLayout.cpp(3.95 KB)
📄 RecordLayoutBuilder.cpp(132.78 KB)
📄 ScanfFormatString.cpp(18.62 KB)
📄 SelectorLocationsKind.cpp(4.48 KB)
📄 Stmt.cpp(45.04 KB)
📄 StmtCXX.cpp(5 KB)
📄 StmtIterator.cpp(2.92 KB)
📄 StmtObjC.cpp(2.75 KB)
📄 StmtOpenMP.cpp(98.6 KB)
📄 StmtPrinter.cpp(70.34 KB)
📄 StmtProfile.cpp(60.24 KB)
📄 StmtViz.cpp(1.75 KB)
📄 TemplateBase.cpp(16.19 KB)
📄 TemplateName.cpp(9.96 KB)
📄 TextNodeDumper.cpp(61.83 KB)
📄 Type.cpp(144.42 KB)
📄 TypeLoc.cpp(20.52 KB)
📄 TypePrinter.cpp(63.28 KB)
📄 VTTBuilder.cpp(7.25 KB)
📄 VTableBuilder.cpp(139.78 KB)

Editing: Linkage.h

//===----- Linkage.h - Linkage calculation-related utilities ----*- 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 provides AST-internal utilities for linkage and visibility
// calculation.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_LIB_AST_LINKAGE_H
#define LLVM_CLANG_LIB_AST_LINKAGE_H

#include "clang/AST/ASTFwd.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/Type.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/PointerIntPair.h"

namespace clang {
/// Kinds of LV computation.  The linkage side of the computation is
/// always the same, but different things can change how visibility is
/// computed.
struct LVComputationKind {
  /// The kind of entity whose visibility is ultimately being computed;
  /// visibility computations for types and non-types follow different rules.
  unsigned ExplicitKind : 1;
  /// Whether explicit visibility attributes should be ignored. When set,
  /// visibility may only be restricted by the visibility of template arguments.
  unsigned IgnoreExplicitVisibility : 1;
  /// Whether all visibility should be ignored. When set, we're only interested
  /// in computing linkage.
  unsigned IgnoreAllVisibility : 1;

enum { NumLVComputationKindBits = 3 };

explicit LVComputationKind(NamedDecl::ExplicitVisibilityKind EK)
      : ExplicitKind(EK), IgnoreExplicitVisibility(false),
        IgnoreAllVisibility(false) {}

NamedDecl::ExplicitVisibilityKind getExplicitVisibilityKind() const {
    return static_cast<NamedDecl::ExplicitVisibilityKind>(ExplicitKind);
  }

bool isTypeVisibility() const {
    return getExplicitVisibilityKind() == NamedDecl::VisibilityForType;
  }
  bool isValueVisibility() const {
    return getExplicitVisibilityKind() == NamedDecl::VisibilityForValue;
  }

/// Do an LV computation when we only care about the linkage.
  static LVComputationKind forLinkageOnly() {
    LVComputationKind Result(NamedDecl::VisibilityForValue);
    Result.IgnoreExplicitVisibility = true;
    Result.IgnoreAllVisibility = true;
    return Result;
  }

unsigned toBits() {
    unsigned Bits = 0;
    Bits = (Bits << 1) | ExplicitKind;
    Bits = (Bits << 1) | IgnoreExplicitVisibility;
    Bits = (Bits << 1) | IgnoreAllVisibility;
    return Bits;
  }
};

class LinkageComputer {
  // We have a cache for repeated linkage/visibility computations. This saves us
  // from exponential behavior in heavily templated code, such as:
  //
  // template <typename T, typename V> struct {};
  // using A = int;
  // using B = Foo<A, A>;
  // using C = Foo<B, B>;
  // using D = Foo<C, C>;
  //
  // The integer represents an LVComputationKind.
  using QueryType =
      llvm::PointerIntPair<const NamedDecl *,
                           LVComputationKind::NumLVComputationKindBits>;
  llvm::SmallDenseMap<QueryType, LinkageInfo, 8> CachedLinkageInfo;

static QueryType makeCacheKey(const NamedDecl *ND, LVComputationKind Kind) {
    return QueryType(ND, Kind.toBits());
  }

llvm::Optional<LinkageInfo> lookup(const NamedDecl *ND,
                                     LVComputationKind Kind) const {
    auto Iter = CachedLinkageInfo.find(makeCacheKey(ND, Kind));
    if (Iter == CachedLinkageInfo.end())
      return None;
    return Iter->second;
  }

void cache(const NamedDecl *ND, LVComputationKind Kind, LinkageInfo Info) {
    CachedLinkageInfo[makeCacheKey(ND, Kind)] = Info;
  }

LinkageInfo getLVForTemplateArgumentList(ArrayRef<TemplateArgument> Args,
                                           LVComputationKind computation);

LinkageInfo getLVForTemplateArgumentList(const TemplateArgumentList &TArgs,
                                           LVComputationKind computation);

void mergeTemplateLV(LinkageInfo &LV, const FunctionDecl *fn,
                       const FunctionTemplateSpecializationInfo *specInfo,
                       LVComputationKind computation);

void mergeTemplateLV(LinkageInfo &LV,
                       const ClassTemplateSpecializationDecl *spec,
                       LVComputationKind computation);

void mergeTemplateLV(LinkageInfo &LV,
                       const VarTemplateSpecializationDecl *spec,
                       LVComputationKind computation);

LinkageInfo getLVForNamespaceScopeDecl(const NamedDecl *D,
                                         LVComputationKind computation,
                                         bool IgnoreVarTypeLinkage);

LinkageInfo getLVForClassMember(const NamedDecl *D,
                                  LVComputationKind computation,
                                  bool IgnoreVarTypeLinkage);

LinkageInfo getLVForClosure(const DeclContext *DC, Decl *ContextDecl,
                              LVComputationKind computation);

LinkageInfo getLVForLocalDecl(const NamedDecl *D,
                                LVComputationKind computation);

LinkageInfo getLVForType(const Type &T, LVComputationKind computation);

LinkageInfo getLVForTemplateParameterList(const TemplateParameterList *Params,
                                            LVComputationKind computation);

public:
  LinkageInfo computeLVForDecl(const NamedDecl *D,
                               LVComputationKind computation,
                               bool IgnoreVarTypeLinkage = false);

LinkageInfo getLVForDecl(const NamedDecl *D, LVComputationKind computation);

LinkageInfo computeTypeLinkageInfo(const Type *T);
  LinkageInfo computeTypeLinkageInfo(QualType T) {
    return computeTypeLinkageInfo(T.getTypePtr());
  }

LinkageInfo getDeclLinkageAndVisibility(const NamedDecl *D);

LinkageInfo getTypeLinkageAndVisibility(const Type *T);
  LinkageInfo getTypeLinkageAndVisibility(QualType T) {
    return getTypeLinkageAndVisibility(T.getTypePtr());
  }
};
} // namespace clang

#endif

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Editing: Linkage.h

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