[Lldb-commits] [lldb] [lldb][test] DWARFASTParserClangTests: extract test setup into helper structure (PR #170132)

[Adrian Prantl via lldb-commits]

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@@ -42,6 +42,52 @@ class DWARFASTParserClangStub : public DWARFASTParserClang {
     return keys;
   }
 };
+
+/// Helper structure for DWARFASTParserClang tests that want to parse DWARF
+/// generated using yaml2obj. On construction parses the supplied YAML data
+/// into a DWARF module and thereafter vends a DWARFASTParserClang and
+/// TypeSystemClang that are guaranteed to live for the duration of this object.
+class DWARFASTParserClangYAMLTester {
+public:
+  DWARFASTParserClangYAMLTester(llvm::StringRef yaml_data)
+      : m_module_tester(yaml_data) {}
+
+  DWARFDIE GetCUDIE() {
+    DWARFUnit *unit = m_module_tester.GetDwarfUnit();
+    assert(unit);
+
+    const DWARFDebugInfoEntry *cu_entry = unit->DIE().GetDIE();
+    assert(cu_entry->Tag() == DW_TAG_compile_unit);
+
+    return DWARFDIE(unit, cu_entry);
+  }
+
+  DWARFASTParserClang &GetParser() {
+    auto *parser = GetTypeSystem().GetDWARFParser();
+
+    assert(llvm::isa_and_nonnull<DWARFASTParserClang>(parser));
+
+    return *llvm::dyn_cast<DWARFASTParserClang>(parser);
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adrian-prantl wrote:

Could this just be a non-dynamic `cast<>`?

https://github.com/llvm/llvm-project/pull/170132