1 files changed, 110 insertions, 0 deletions
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangASTMetadata.h b/lldb/source/Plugins/ExpressionParser/Clang/ClangASTMetadata.h
new file mode 100644
index 000000000000..d3bcde2ced79
--- /dev/null
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangASTMetadata.h
@@ -0,0 +1,110 @@
+//===-- ClangASTMetadata.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_CLANGASTMETADATA_H
+#define LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGASTMETADATA_H
+
+#include "lldb/Core/dwarf.h"
+#include "lldb/lldb-defines.h"
+#include "lldb/lldb-enumerations.h"
+
+namespace lldb_private {
+
+class ClangASTMetadata {
+public:
+  ClangASTMetadata()
+      : m_user_id(0), m_union_is_user_id(false), m_union_is_isa_ptr(false),
+        m_has_object_ptr(false), m_is_self(false), m_is_dynamic_cxx(true),
+        m_is_forcefully_completed(false) {}
+
+  bool GetIsDynamicCXXType() const { return m_is_dynamic_cxx; }
+
+  void SetIsDynamicCXXType(bool b) { m_is_dynamic_cxx = b; }
+
+  void SetUserID(lldb::user_id_t user_id) {
+    m_user_id = user_id;
+    m_union_is_user_id = true;
+    m_union_is_isa_ptr = false;
+  }
+
+  lldb::user_id_t GetUserID() const {
+    if (m_union_is_user_id)
+      return m_user_id;
+    else
+      return LLDB_INVALID_UID;
+  }
+
+  void SetISAPtr(uint64_t isa_ptr) {
+    m_isa_ptr = isa_ptr;
+    m_union_is_user_id = false;
+    m_union_is_isa_ptr = true;
+  }
+
+  uint64_t GetISAPtr() const {
+    if (m_union_is_isa_ptr)
+      return m_isa_ptr;
+    else
+      return 0;
+  }
+
+  void SetObjectPtrName(const char *name) {
+    m_has_object_ptr = true;
+    if (strcmp(name, "self") == 0)
+      m_is_self = true;
+    else if (strcmp(name, "this") == 0)
+      m_is_self = false;
+    else
+      m_has_object_ptr = false;
+  }
+
+  lldb::LanguageType GetObjectPtrLanguage() const {
+    if (m_has_object_ptr) {
+      if (m_is_self)
+        return lldb::eLanguageTypeObjC;
+      else
+        return lldb::eLanguageTypeC_plus_plus;
+    }
+    return lldb::eLanguageTypeUnknown;
+  }
+
+  const char *GetObjectPtrName() const {
+    if (m_has_object_ptr) {
+      if (m_is_self)
+        return "self";
+      else
+        return "this";
+    } else
+      return nullptr;
+  }
+
+  bool HasObjectPtr() const { return m_has_object_ptr; }
+
+  /// A type is "forcefully completed" if it was declared complete to satisfy an
+  /// AST invariant (e.g. base classes must be complete types), but in fact we
+  /// were not able to find a actual definition for it.
+  bool IsForcefullyCompleted() const { return m_is_forcefully_completed; }
+
+  void SetIsForcefullyCompleted(bool value = true) {
+    m_is_forcefully_completed = true;
+  }
+
+  void Dump(Stream *s);
+
+private:
+  union {
+    lldb::user_id_t m_user_id;
+    uint64_t m_isa_ptr;
+  };
+
+  bool m_union_is_user_id : 1, m_union_is_isa_ptr : 1, m_has_object_ptr : 1,
+      m_is_self : 1, m_is_dynamic_cxx : 1, m_is_forcefully_completed : 1;
+};
+
+} // namespace lldb_private
+
+#endif // LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGASTMETADATA_H