DebugNamesDWARFIndex: Implement DWARFDeclContext variant of GetTypes method

This method is used to find complete definitions of a type when one
parses a compile unit with only forward declaration available.

Since it is only accessed from DWARFASTParserClang, it was not
possible/easy to trigger this codepath from lldb-test. Therefore, I
adapt add a debug-names variant to an existing dotest test to cover this
scenario.

llvm-svn: 334516

2 files changed, 13 insertions, 1 deletions

diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DebugNamesDWARFIndex.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DebugNamesDWARFIndex.cpp
index 644110c8295..4a595ce72d0 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DebugNamesDWARFIndex.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DebugNamesDWARFIndex.cpp
@@ -9,6 +9,7 @@
 
 #include "Plugins/SymbolFile/DWARF/DebugNamesDWARFIndex.h"
 #include "Plugins/SymbolFile/DWARF/DWARFDebugInfo.h"
+#include "Plugins/SymbolFile/DWARF/DWARFDeclContext.h"
 #include "Plugins/SymbolFile/DWARF/SymbolFileDWARFDwo.h"
 #include "lldb/Utility/RegularExpression.h"
 #include "lldb/Utility/Stream.h"
@@ -155,6 +156,17 @@ void DebugNamesDWARFIndex::GetTypes(ConstString name, DIEArray &offsets) {
   }
 }
 
+void DebugNamesDWARFIndex::GetTypes(const DWARFDeclContext &context,
+                                    DIEArray &offsets) {
+  m_fallback.GetTypes(context, offsets);
+
+  for (const DebugNames::Entry &entry :
+       m_debug_names_up->equal_range(context[0].name)) {
+    if (entry.tag() == context[0].tag)
+      Append(entry, offsets);
+  }
+}
+
 void DebugNamesDWARFIndex::GetNamespaces(ConstString name, DIEArray &offsets) {
   m_fallback.GetNamespaces(name, offsets);
 
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DebugNamesDWARFIndex.h b/lldb/source/Plugins/SymbolFile/DWARF/DebugNamesDWARFIndex.h
index 3daea75977a..4f0b1cee420 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DebugNamesDWARFIndex.h
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DebugNamesDWARFIndex.h
@@ -33,7 +33,7 @@ public:
   void GetCompleteObjCClass(ConstString class_name, bool must_be_implementation,
                             DIEArray &offsets) override {}
   void GetTypes(ConstString name, DIEArray &offsets) override;
-  void GetTypes(const DWARFDeclContext &context, DIEArray &offsets) override {}
+  void GetTypes(const DWARFDeclContext &context, DIEArray &offsets) override;
   void GetNamespaces(ConstString name, DIEArray &offsets) override;
   void GetFunctions(ConstString name, DWARFDebugInfo &info,
                     const CompilerDeclContext &parent_decl_ctx,