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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===- ASTImporterSharedState.h - ASTImporter specific state --*- C++ -*---===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file defines the ASTImporter specific state, which may be shared |
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| 10 | // amongst several ASTImporter objects. |
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| 11 | // |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | |||
| 14 | #ifndef LLVM_CLANG_AST_ASTIMPORTERSHAREDSTATE_H |
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| 15 | #define LLVM_CLANG_AST_ASTIMPORTERSHAREDSTATE_H |
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| 16 | |||
| 17 | #include "clang/AST/ASTImportError.h" |
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| 18 | #include "clang/AST/ASTImporterLookupTable.h" |
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| 19 | #include "clang/AST/Decl.h" |
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| 20 | #include "llvm/ADT/DenseMap.h" |
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| 21 | #include <optional> |
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| 22 | |||
| 23 | namespace clang { |
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| 24 | |||
| 25 | class TranslationUnitDecl; |
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| 26 | |||
| 27 | /// Importer specific state, which may be shared amongst several ASTImporter |
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| 28 | /// objects. |
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| 29 | class ASTImporterSharedState { |
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| 30 | |||
| 31 | /// Pointer to the import specific lookup table. |
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| 32 | std::unique_ptr<ASTImporterLookupTable> LookupTable; |
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| 33 | |||
| 34 | /// Mapping from the already-imported declarations in the "to" |
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| 35 | /// context to the error status of the import of that declaration. |
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| 36 | /// This map contains only the declarations that were not correctly |
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| 37 | /// imported. The same declaration may or may not be included in |
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| 38 | /// ImportedFromDecls. This map is updated continuously during imports and |
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| 39 | /// never cleared (like ImportedFromDecls). |
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| 40 | llvm::DenseMap<Decl *, ASTImportError> ImportErrors; |
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| 41 | |||
| 42 | /// Set of the newly created declarations. |
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| 43 | llvm::DenseSet<Decl *> NewDecls; |
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| 44 | |||
| 45 | // FIXME put ImportedFromDecls here! |
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| 46 | // And from that point we can better encapsulate the lookup table. |
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| 47 | |||
| 48 | public: |
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| 49 | ASTImporterSharedState() = default; |
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| 50 | |||
| 51 | ASTImporterSharedState(TranslationUnitDecl &ToTU) { |
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| 52 | LookupTable = std::make_unique<ASTImporterLookupTable>(ToTU); |
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| 53 | } |
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| 54 | |||
| 55 | ASTImporterLookupTable *getLookupTable() { return LookupTable.get(); } |
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| 56 | |||
| 57 | void addDeclToLookup(Decl *D) { |
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| 58 | if (LookupTable) |
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| 59 | if (auto *ND = dyn_cast<NamedDecl>(D)) |
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| 60 | LookupTable->add(ND); |
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| 61 | } |
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| 62 | |||
| 63 | void removeDeclFromLookup(Decl *D) { |
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| 64 | if (LookupTable) |
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| 65 | if (auto *ND = dyn_cast<NamedDecl>(D)) |
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| 66 | LookupTable->remove(ND); |
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| 67 | } |
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| 68 | |||
| 69 | std::optional<ASTImportError> getImportDeclErrorIfAny(Decl *ToD) const { |
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| 70 | auto Pos = ImportErrors.find(ToD); |
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| 71 | if (Pos != ImportErrors.end()) |
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| 72 | return Pos->second; |
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| 73 | else |
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| 74 | return std::nullopt; |
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| 75 | } |
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| 76 | |||
| 77 | void setImportDeclError(Decl *To, ASTImportError Error) { |
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| 78 | ImportErrors[To] = Error; |
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| 79 | } |
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| 80 | |||
| 81 | bool isNewDecl(const Decl *ToD) const { return NewDecls.count(ToD); } |
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| 82 | |||
| 83 | void markAsNewDecl(Decl *ToD) { NewDecls.insert(ToD); } |
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| 84 | }; |
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| 85 | |||
| 86 | } // namespace clang |
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| 87 | #endif // LLVM_CLANG_AST_ASTIMPORTERSHAREDSTATE_H |