From 0dba9b33f0165a874e5bc05d7735293c52a7d250 Mon Sep 17 00:00:00 2001
From: Enrico Granata <egranata@apple.com>
Date: Wed, 8 Jan 2014 01:36:59 +0000
Subject: New and improved data formatter for std::shared_ptr<> and
 std::weak_ptr<>

llvm-svn: 198724
---
 lldb/source/DataFormatters/FormatManager.cpp |  5 ++--
 lldb/source/DataFormatters/LibCxx.cpp        | 45 ++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+), 2 deletions(-)

(limited to 'lldb/source/DataFormatters')

diff --git a/lldb/source/DataFormatters/FormatManager.cpp b/lldb/source/DataFormatters/FormatManager.cpp
index 41e2acb1c99..3e5fe53fa69 100644
--- a/lldb/source/DataFormatters/FormatManager.cpp
+++ b/lldb/source/DataFormatters/FormatManager.cpp
@@ -963,8 +963,9 @@ FormatManager::LoadLibcxxFormatters()
     AddCXXSummary(libcxx_category_sp, lldb_private::formatters::LibcxxContainerSummaryProvider, "libc++ std::unordered containers summary provider", ConstString("^(std::__1::)unordered_(multi)?(map|set)<.+> >$"), stl_summary_flags, true);
 
     stl_summary_flags.SetSkipPointers(true);
-    AddStringSummary(libcxx_category_sp, "{${var.__ptr_%S}} (strong=${var.count} weak=${var.weak_count})}", ConstString("^std::__1::shared_ptr<.+>(( )?&)?$"), stl_summary_flags, true);
-    AddStringSummary(libcxx_category_sp, "{${var.__ptr_%S}} (strong=${var.count} weak=${var.weak_count})}", ConstString("^std::__1::weak_ptr<.+>(( )?&)?$"), stl_summary_flags, true);
+    
+    AddCXXSummary(libcxx_category_sp, lldb_private::formatters::LibcxxSmartPointerSummaryProvider, "libc++ std::shared_ptr summary provider", ConstString("^std::__1::shared_ptr<.+>(( )?&)?$"), stl_summary_flags, true);
+    AddCXXSummary(libcxx_category_sp, lldb_private::formatters::LibcxxSmartPointerSummaryProvider, "libc++ std::weak_ptr summary provider", ConstString("^std::__1::weak_ptr<.+>(( )?&)?$"), stl_summary_flags, true);
     
     AddCXXSynthetic(libcxx_category_sp, lldb_private::formatters::LibCxxVectorIteratorSyntheticFrontEndCreator, "std::vector iterator synthetic children", ConstString("^std::__1::__wrap_iter<.+>$"), stl_synth_flags, true);
     
diff --git a/lldb/source/DataFormatters/LibCxx.cpp b/lldb/source/DataFormatters/LibCxx.cpp
index 1c799722fa4..6380d971a17 100644
--- a/lldb/source/DataFormatters/LibCxx.cpp
+++ b/lldb/source/DataFormatters/LibCxx.cpp
@@ -26,6 +26,51 @@ using namespace lldb;
 using namespace lldb_private;
 using namespace lldb_private::formatters;
 
+bool
+lldb_private::formatters::LibcxxSmartPointerSummaryProvider (ValueObject& valobj, Stream& stream)
+{
+    ValueObjectSP valobj_sp(valobj.GetNonSyntheticValue());
+    if (!valobj_sp)
+        return false;
+    ValueObjectSP ptr_sp(valobj_sp->GetChildMemberWithName(ConstString("__ptr_"), true));
+    ValueObjectSP count_sp(valobj_sp->GetChildAtNamePath( {ConstString("__cntrl_"),ConstString("__shared_owners_")} ));
+    ValueObjectSP weakcount_sp(valobj_sp->GetChildAtNamePath( {ConstString("__cntrl_"),ConstString("__shared_weak_owners_")} ));
+    
+    if (!ptr_sp)
+        return false;
+    
+    if (ptr_sp->GetValueAsUnsigned(0) == 0)
+    {
+        stream.Printf("nullptr");
+        return true;
+    }
+    else
+    {
+        bool print_pointee = false;
+        Error error;
+        ValueObjectSP pointee_sp = ptr_sp->Dereference(error);
+        if (pointee_sp && error.Success())
+        {
+            if (pointee_sp->DumpPrintableRepresentation(stream,
+                                                        ValueObject::eValueObjectRepresentationStyleSummary,
+                                                        lldb::eFormatInvalid,
+                                                        ValueObject::ePrintableRepresentationSpecialCasesDisable,
+                                                        false))
+                print_pointee = true;
+        }
+        if (!print_pointee)
+            stream.Printf("ptr = 0x%" PRIx64, ptr_sp->GetValueAsUnsigned(0));
+    }
+    
+    if (count_sp)
+        stream.Printf(" strong=%" PRIu64, 1+count_sp->GetValueAsUnsigned(0));
+
+    if (weakcount_sp)
+        stream.Printf(" weak=%" PRIu64, 1+weakcount_sp->GetValueAsUnsigned(0));
+    
+    return true;
+}
+
 lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::LibcxxVectorBoolSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
 SyntheticChildrenFrontEnd(*valobj_sp.get()),
 m_bool_type(),
-- 
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