IndexingContext.h

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//===- IndexingContext.h - Indexing context data ----------------*- 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
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_CLANG_LIB_INDEX_INDEXINGCONTEXT_H
#define LLVM_CLANG_LIB_INDEX_INDEXINGCONTEXT_H
 
#include "clang/Basic/IdentifierTable.h"
#include "clang/Basic/LLVM.h"
#include "clang/Index/IndexSymbol.h"
#include "clang/Index/IndexingAction.h"
#include "clang/Lex/MacroInfo.h"
#include "llvm/ADT/ArrayRef.h"
 
namespace clang {
  class ASTContext;
  class Decl;
  class DeclGroupRef;
  class ImportDecl;
  class HeuristicResolver;
  class TagDecl;
  class TypeSourceInfo;
  class NamedDecl;
  class ObjCMethodDecl;
  class DeclContext;
  class NestedNameSpecifierLoc;
  class Stmt;
  class Expr;
  class TypeLoc;
  class SourceLocation;
 
namespace index {
  class IndexDataConsumer;
 
class IndexingContext {
  IndexingOptions IndexOpts;
  IndexDataConsumer &DataConsumer;
  ASTContext *Ctx = nullptr;
  std::unique_ptr<HeuristicResolver> Resolver;
 
public:
  IndexingContext(IndexingOptions IndexOpts, IndexDataConsumer &DataConsumer);
  // Defaulted, but defined out of line to avoid a dependency on
  // HeuristicResolver.h (unique_ptr requires a complete type at
  // the point where its destructor is called).
  ~IndexingContext();
 
  const IndexingOptions &getIndexOpts() const { return IndexOpts; }
  IndexDataConsumer &getDataConsumer() { return DataConsumer; }
 
  void setASTContext(ASTContext &ctx);
 
  HeuristicResolver *getResolver() const { return Resolver.get(); }
 
  bool shouldIndex(const Decl *D);
 
  const LangOptions &getLangOpts() const;
 
  bool shouldSuppressRefs() const {
    return false;
  }
 
  bool shouldIndexFunctionLocalSymbols() const;
 
  bool shouldIndexImplicitInstantiation() const;
 
  bool shouldIndexParametersInDeclarations() const;
 
  bool shouldIndexTemplateParameters() const;
 
  static bool isTemplateImplicitInstantiation(const Decl *D);
 
  bool handleDecl(const Decl *D, SymbolRoleSet Roles = SymbolRoleSet(),
                  ArrayRef<SymbolRelation> Relations = {});
 
  bool handleDecl(const Decl *D, SourceLocation Loc,
                  SymbolRoleSet Roles = SymbolRoleSet(),
                  ArrayRef<SymbolRelation> Relations = {},
                  const DeclContext *DC = nullptr);
 
  bool handleReference(const NamedDecl *D, SourceLocation Loc,
                       const NamedDecl *Parent, const DeclContext *DC,
                       SymbolRoleSet Roles = SymbolRoleSet(),
                       ArrayRef<SymbolRelation> Relations = {},
                       const Expr *RefE = nullptr);
 
  void handleMacroDefined(const IdentifierInfo &Name, SourceLocation Loc,
                          const MacroInfo &MI);
 
  void handleMacroUndefined(const IdentifierInfo &Name, SourceLocation Loc,
                            const MacroInfo &MI);
 
  void handleMacroReference(const IdentifierInfo &Name, SourceLocation Loc,
                            const MacroInfo &MD);
 
  bool importedModule(const ImportDecl *ImportD);
 
  bool indexDecl(const Decl *D);
 
  void indexTagDecl(const TagDecl *D, ArrayRef<SymbolRelation> Relations = {});
 
  void indexTypeSourceInfo(TypeSourceInfo *TInfo, const NamedDecl *Parent,
                           const DeclContext *DC = nullptr,
                           bool isBase = false,
                           bool isIBType = false);
 
  void indexTypeLoc(TypeLoc TL, const NamedDecl *Parent,
                    const DeclContext *DC = nullptr,
                    bool isBase = false,
                    bool isIBType = false);
 
  void indexNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS,
                                   const NamedDecl *Parent,
                                   const DeclContext *DC = nullptr);
 
  bool indexDeclContext(const DeclContext *DC);
 
  void indexBody(const Stmt *S, const NamedDecl *Parent,
                 const DeclContext *DC = nullptr);
 
  bool indexTopLevelDecl(const Decl *D);
  bool indexDeclGroupRef(DeclGroupRef DG);
 
private:
  bool shouldIgnoreIfImplicit(const Decl *D);
 
  bool shouldIndexMacroOccurrence(bool IsRef, SourceLocation Loc);
 
  bool handleDeclOccurrence(const Decl *D, SourceLocation Loc,
                            bool IsRef, const Decl *Parent,
                            SymbolRoleSet Roles,
                            ArrayRef<SymbolRelation> Relations,
                            const Expr *RefE,
                            const Decl *RefD,
                            const DeclContext *ContainerDC);
};
 
} // end namespace index
} // end namespace clang
 
#endif