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/ASTSourceDescriptor.h"
  14 #include <optional>
  15
  16 namespace clang {
  17
  18 class Module;
  19
  20 } // namespace clang
  21
  22 namespace lldb_private {
  23
  24 class ClangExternalASTSourceCallbacks : public clang::ExternalASTSource {
  25   /// LLVM RTTI support.
  26   static char ID;
  27
  28 public:
  29   /// LLVM RTTI support.
  30   bool isA(const void *ClassID) const override { return ClassID == &ID; }
  31   static bool classof(const clang::ExternalASTSource *s) { return s->isA(&ID); }
  32
  33   ClangExternalASTSourceCallbacks(TypeSystemClang &ast) : m_ast(ast) {}
  34
  35   void FindExternalLexicalDecls(
  36       const clang::DeclContext *DC,
  37       llvm::function_ref<bool(clang::Decl::Kind)> IsKindWeWant,
  38       llvm::SmallVectorImpl<clang::Decl *> &Result) override;
  39
  40   bool
  41   FindExternalVisibleDeclsByName(const clang::DeclContext *DC,
  42                                  clang::DeclarationName Name,
  43                                  const clang::DeclContext *OriginalDC) override;
  44
  45   void CompleteType(clang::TagDecl *tag_decl) override;
  46
  47   void CompleteType(clang::ObjCInterfaceDecl *objc_decl) override;
  48
  49   bool layoutRecordType(
  50       const clang::RecordDecl *Record, uint64_t &Size, uint64_t &Alignment,
  51       llvm::DenseMap<const clang::FieldDecl *, uint64_t> &FieldOffsets,
  52       llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits>
  53           &BaseOffsets,
  54       llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits>
  55           &VirtualBaseOffsets) override;
  56
  57   TypeSystemClang &GetTypeSystem() const { return m_ast; }
  58
  59   /// Module-related methods.
  60   /// \{
  61   std::optional<clang::ASTSourceDescriptor>
  62   getSourceDescriptor(unsigned ID) override;
  63   clang::Module *getModule(unsigned ID) override;
  64   OptionalClangModuleID RegisterModule(clang::Module *module);
  65   OptionalClangModuleID GetIDForModule(clang::Module *module);
  66   /// \}
  67 private:
  68   TypeSystemClang &m_ast;
  69   std::vector<clang::Module *> m_modules;
  70   llvm::DenseMap<clang::Module *, unsigned> m_ids;
  71 };
  72
  73 } // namespace lldb_private
  74
  75 #endif // LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGEXTERNALASTSOURCECALLBACKS_H