lldb/source/Plugins/ExpressionParser/Clang/ClangExternalASTSourceCallbacks.h

   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
  16 namespace lldb_private {
  17
  18 class ClangExternalASTSourceCallbacks : public clang::ExternalASTSource {
  19   /// LLVM RTTI support.
  20   static char ID;
  21
  22 public:
  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   /// \}
  59 private:
  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