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