1//===-- ClangExternalASTSourceCallbacks.h -----------------------*- 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#ifndef LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGEXTERNALASTSOURCECALLBACKS_H
10#define LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGEXTERNALASTSOURCECALLBACKS_H
11
12#include "Plugins/TypeSystem/Clang/TypeSystemClang.h"
13#include "clang/Basic/Module.h"
14#include <optional>
15
16namespace lldb_private {
17
18class ClangExternalASTSourceCallbacks : public clang::ExternalASTSource {
19  /// LLVM RTTI support.
20  static char ID;
21
22public:
23  /// LLVM RTTI support.
24  bool isA(const void *ClassID) const override { return ClassID == &ID; }
25  static bool classof(const clang::ExternalASTSource *s) { return s->isA(&ID); }
26
27  ClangExternalASTSourceCallbacks(TypeSystemClang &ast) : m_ast(ast) {}
28
29  void FindExternalLexicalDecls(
30      const clang::DeclContext *DC,
31      llvm::function_ref<bool(clang::Decl::Kind)> IsKindWeWant,
32      llvm::SmallVectorImpl<clang::Decl *> &Result) override;
33
34  bool FindExternalVisibleDeclsByName(const clang::DeclContext *DC,
35                                      clang::DeclarationName Name) override;
36
37  void CompleteType(clang::TagDecl *tag_decl) override;
38
39  void CompleteType(clang::ObjCInterfaceDecl *objc_decl) override;
40
41  bool layoutRecordType(
42      const clang::RecordDecl *Record, uint64_t &Size, uint64_t &Alignment,
43      llvm::DenseMap<const clang::FieldDecl *, uint64_t> &FieldOffsets,
44      llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits>
45          &BaseOffsets,
46      llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits>
47          &VirtualBaseOffsets) override;
48
49  TypeSystemClang &GetTypeSystem() const { return m_ast; }
50
51  /// Module-related methods.
52  /// \{
53  std::optional<clang::ASTSourceDescriptor>
54  getSourceDescriptor(unsigned ID) override;
55  clang::Module *getModule(unsigned ID) override;
56  OptionalClangModuleID RegisterModule(clang::Module *module);
57  OptionalClangModuleID GetIDForModule(clang::Module *module);
58  /// \}
59private:
60  TypeSystemClang &m_ast;
61  std::vector<clang::Module *> m_modules;
62  llvm::DenseMap<clang::Module *, unsigned> m_ids;
63};
64
65} // namespace lldb_private
66
67#endif // LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGEXTERNALASTSOURCECALLBACKS_H
68