Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

Rev

Blame | Last modification | View Log | Download | RSS feed

  1. //===- ASTImporterSharedState.h - ASTImporter specific state --*- C++ -*---===//
  2. //
  3. // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  4. // See https://llvm.org/LICENSE.txt for license information.
  5. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  6. //
  7. //===----------------------------------------------------------------------===//
  8. //
  9. //  This file defines the ASTImporter specific state, which may be shared
  10. //  amongst several ASTImporter objects.
  11. //
  12. //===----------------------------------------------------------------------===//
  13.  
  14. #ifndef LLVM_CLANG_AST_ASTIMPORTERSHAREDSTATE_H
  15. #define LLVM_CLANG_AST_ASTIMPORTERSHAREDSTATE_H
  16.  
  17. #include "clang/AST/ASTImportError.h"
  18. #include "clang/AST/ASTImporterLookupTable.h"
  19. #include "clang/AST/Decl.h"
  20. #include "llvm/ADT/DenseMap.h"
  21. #include <optional>
  22.  
  23. namespace clang {
  24.  
  25. class TranslationUnitDecl;
  26.  
  27. /// Importer specific state, which may be shared amongst several ASTImporter
  28. /// objects.
  29. class ASTImporterSharedState {
  30.  
  31.   /// Pointer to the import specific lookup table.
  32.   std::unique_ptr<ASTImporterLookupTable> LookupTable;
  33.  
  34.   /// Mapping from the already-imported declarations in the "to"
  35.   /// context to the error status of the import of that declaration.
  36.   /// This map contains only the declarations that were not correctly
  37.   /// imported. The same declaration may or may not be included in
  38.   /// ImportedFromDecls. This map is updated continuously during imports and
  39.   /// never cleared (like ImportedFromDecls).
  40.   llvm::DenseMap<Decl *, ASTImportError> ImportErrors;
  41.  
  42.   /// Set of the newly created declarations.
  43.   llvm::DenseSet<Decl *> NewDecls;
  44.  
  45.   // FIXME put ImportedFromDecls here!
  46.   // And from that point we can better encapsulate the lookup table.
  47.  
  48. public:
  49.   ASTImporterSharedState() = default;
  50.  
  51.   ASTImporterSharedState(TranslationUnitDecl &ToTU) {
  52.     LookupTable = std::make_unique<ASTImporterLookupTable>(ToTU);
  53.   }
  54.  
  55.   ASTImporterLookupTable *getLookupTable() { return LookupTable.get(); }
  56.  
  57.   void addDeclToLookup(Decl *D) {
  58.     if (LookupTable)
  59.       if (auto *ND = dyn_cast<NamedDecl>(D))
  60.         LookupTable->add(ND);
  61.   }
  62.  
  63.   void removeDeclFromLookup(Decl *D) {
  64.     if (LookupTable)
  65.       if (auto *ND = dyn_cast<NamedDecl>(D))
  66.         LookupTable->remove(ND);
  67.   }
  68.  
  69.   std::optional<ASTImportError> getImportDeclErrorIfAny(Decl *ToD) const {
  70.     auto Pos = ImportErrors.find(ToD);
  71.     if (Pos != ImportErrors.end())
  72.       return Pos->second;
  73.     else
  74.       return std::nullopt;
  75.   }
  76.  
  77.   void setImportDeclError(Decl *To, ASTImportError Error) {
  78.     ImportErrors[To] = Error;
  79.   }
  80.  
  81.   bool isNewDecl(const Decl *ToD) const { return NewDecls.count(ToD); }
  82.  
  83.   void markAsNewDecl(Decl *ToD) { NewDecls.insert(ToD); }
  84. };
  85.  
  86. } // namespace clang
  87. #endif // LLVM_CLANG_AST_ASTIMPORTERSHAREDSTATE_H
  88.