1 files changed, 66 insertions, 0 deletions
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangExternalASTSourceCallbacks.h b/lldb/source/Plugins/ExpressionParser/Clang/ClangExternalASTSourceCallbacks.h
new file mode 100644
index 000000000000..69088d9c82a5
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+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangExternalASTSourceCallbacks.h
@@ -0,0 +1,66 @@
+//===-- ClangExternalASTSourceCallbacks.h -----------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGEXTERNALASTSOURCECALLBACKS_H
+#define LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGEXTERNALASTSOURCECALLBACKS_H
+
+#include "Plugins/TypeSystem/Clang/TypeSystemClang.h"
+#include "clang/Basic/Module.h"
+
+namespace lldb_private {
+
+class ClangExternalASTSourceCallbacks : public clang::ExternalASTSource {
+  /// LLVM RTTI support.
+  static char ID;
+
+public:
+  /// LLVM RTTI support.
+  bool isA(const void *ClassID) const override { return ClassID == &ID; }
+  static bool classof(const clang::ExternalASTSource *s) { return s->isA(&ID); }
+
+  ClangExternalASTSourceCallbacks(TypeSystemClang &ast) : m_ast(ast) {}
+
+  void FindExternalLexicalDecls(
+      const clang::DeclContext *DC,
+      llvm::function_ref<bool(clang::Decl::Kind)> IsKindWeWant,
+      llvm::SmallVectorImpl<clang::Decl *> &Result) override;
+
+  bool FindExternalVisibleDeclsByName(const clang::DeclContext *DC,
+                                      clang::DeclarationName Name) override;
+
+  void CompleteType(clang::TagDecl *tag_decl) override;
+
+  void CompleteType(clang::ObjCInterfaceDecl *objc_decl) override;
+
+  bool layoutRecordType(
+      const clang::RecordDecl *Record, uint64_t &Size, uint64_t &Alignment,
+      llvm::DenseMap<const clang::FieldDecl *, uint64_t> &FieldOffsets,
+      llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits>
+          &BaseOffsets,
+      llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits>
+          &VirtualBaseOffsets) override;
+
+  TypeSystemClang &GetTypeSystem() const { return m_ast; }
+
+  /// Module-related methods.
+  /// \{
+  llvm::Optional<clang::ASTSourceDescriptor>
+  getSourceDescriptor(unsigned ID) override;
+  clang::Module *getModule(unsigned ID) override;
+  OptionalClangModuleID RegisterModule(clang::Module *module);
+  OptionalClangModuleID GetIDForModule(clang::Module *module);
+  /// \}
+private:
+  TypeSystemClang &m_ast;
+  std::vector<clang::Module *> m_modules;
+  llvm::DenseMap<clang::Module *, unsigned> m_ids;
+};
+
+} // namespace lldb_private
+
+#endif // LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGEXTERNALASTSOURCECALLBACKS_H