[Lldb-commits] [lldb] [lldb][NFC] Implement llvm-style RTTI for DWARFASTParser (PR #69762)

[Augusto Noronha via lldb-commits]

https://github.com/augusto2112 created https://github.com/llvm/llvm-project/pull/69762

None

>From 2cc3dc43d5ef705a016b8b7b3c23d99d5f01a5d8 Mon Sep 17 00:00:00 2001
From: Augusto Noronha <augusto2112 at me.com>
Date: Fri, 20 Oct 2023 12:42:52 -0700
Subject: [PATCH] [lldb][NFC] Implement llvm-style RTTI for DWARFASTParser

---
 lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParser.h     | 8 ++++++++
 .../Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp      | 3 ++-
 .../source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.h | 4 ++++
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParser.h b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParser.h
index eaafbe169cc8cfc..99527fb83f1fa0a 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParser.h
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParser.h
@@ -29,6 +29,9 @@ class SymbolFileDWARF;
 
 class DWARFASTParser {
 public:
+  enum class Kind { DWARFASTParserClang, DWARFASTParserSwift };
+  DWARFASTParser(Kind kind) : m_kind(kind) {}
+
   virtual ~DWARFASTParser() = default;
 
   virtual lldb::TypeSP ParseTypeFromDWARF(const SymbolContext &sc,
@@ -62,6 +65,11 @@ class DWARFASTParser {
                       const ExecutionContext *exe_ctx = nullptr);
 
   static lldb::AccessType GetAccessTypeFromDWARF(uint32_t dwarf_accessibility);
+
+  Kind GetKind() const { return m_kind; }
+
+private:
+  const Kind m_kind;
 };
 } // namespace dwarf
 } // namespace lldb_private::plugin
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
index 545a5dcc7d0fd09..5d107ce63b8bc25 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
@@ -63,7 +63,8 @@ using namespace lldb_private::dwarf;
 using namespace lldb_private::plugin::dwarf;
 
 DWARFASTParserClang::DWARFASTParserClang(TypeSystemClang &ast)
-    : m_ast(ast), m_die_to_decl_ctx(), m_decl_ctx_to_die() {}
+    : DWARFASTParser(Kind::DWARFASTParserClang), m_ast(ast),
+      m_die_to_decl_ctx(), m_decl_ctx_to_die() {}
 
 DWARFASTParserClang::~DWARFASTParserClang() = default;
 
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.h b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.h
index 3d6912cf56c1779..d58fcf4a64dab3b 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.h
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.h
@@ -248,6 +248,10 @@ class DWARFASTParserClang : public lldb_private::plugin::dwarf::DWARFASTParser {
   lldb::ModuleSP
   GetModuleForType(const lldb_private::plugin::dwarf::DWARFDIE &die);
 
+  static bool classof(const DWARFASTParser *Parser) {
+    return Parser->GetKind() == Kind::DWARFASTParserClang;
+  }
+
 private:
   struct FieldInfo {
     uint64_t bit_size = 0;