Add data formatter for libstdc++ shared_ptr and weak_ptr
Differential revision: http://reviews.llvm.org/D21984
llvm-svn: 274617
diff --git a/lldb/source/Plugins/Language/CPlusPlus/LibStdcpp.cpp b/lldb/source/Plugins/Language/CPlusPlus/LibStdcpp.cpp
index b4848b1..6d6f915 100644
--- a/lldb/source/Plugins/Language/CPlusPlus/LibStdcpp.cpp
+++ b/lldb/source/Plugins/Language/CPlusPlus/LibStdcpp.cpp
@@ -28,12 +28,24 @@
using namespace lldb_private;
using namespace lldb_private::formatters;
+namespace
+{
+
class LibstdcppMapIteratorSyntheticFrontEnd : public SyntheticChildrenFrontEnd
{
-public:
- LibstdcppMapIteratorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp);
+ /*
+ (std::_Rb_tree_iterator<std::pair<const int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >) ibeg = {
+ (_Base_ptr) _M_node = 0x0000000100103910 {
+ (std::_Rb_tree_color) _M_color = _S_black
+ (std::_Rb_tree_node_base::_Base_ptr) _M_parent = 0x00000001001038c0
+ (std::_Rb_tree_node_base::_Base_ptr) _M_left = 0x0000000000000000
+ (std::_Rb_tree_node_base::_Base_ptr) _M_right = 0x0000000000000000
+ }
+ }
+ */
- ~LibstdcppMapIteratorSyntheticFrontEnd() override = default;
+public:
+ explicit LibstdcppMapIteratorSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp);
size_t
CalculateNumChildren() override;
@@ -57,16 +69,28 @@
lldb::ValueObjectSP m_pair_sp;
};
-/*
- (std::_Rb_tree_iterator<std::pair<const int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >) ibeg = {
- (_Base_ptr) _M_node = 0x0000000100103910 {
- (std::_Rb_tree_color) _M_color = _S_black
- (std::_Rb_tree_node_base::_Base_ptr) _M_parent = 0x00000001001038c0
- (std::_Rb_tree_node_base::_Base_ptr) _M_left = 0x0000000000000000
- (std::_Rb_tree_node_base::_Base_ptr) _M_right = 0x0000000000000000
- }
- }
- */
+class LibStdcppSharedPtrSyntheticFrontEnd : public SyntheticChildrenFrontEnd
+{
+public:
+ explicit LibStdcppSharedPtrSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp);
+
+ size_t
+ CalculateNumChildren() override;
+
+ lldb::ValueObjectSP
+ GetChildAtIndex(size_t idx) override;
+
+ bool
+ Update() override;
+
+ bool
+ MightHaveChildren() override;
+
+ size_t
+ GetIndexOfChildWithName(const ConstString &name) override;
+};
+
+} // end of anonymous namespace
LibstdcppMapIteratorSyntheticFrontEnd::LibstdcppMapIteratorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp),
@@ -193,7 +217,7 @@
}
bool
-lldb_private::formatters::VectorIteratorSyntheticFrontEnd::Update()
+VectorIteratorSyntheticFrontEnd::Update()
{
m_item_sp.reset();
@@ -218,13 +242,13 @@
}
size_t
-lldb_private::formatters::VectorIteratorSyntheticFrontEnd::CalculateNumChildren ()
+VectorIteratorSyntheticFrontEnd::CalculateNumChildren()
{
return 1;
}
lldb::ValueObjectSP
-lldb_private::formatters::VectorIteratorSyntheticFrontEnd::GetChildAtIndex (size_t idx)
+VectorIteratorSyntheticFrontEnd::GetChildAtIndex(size_t idx)
{
if (idx == 0)
return m_item_sp;
@@ -232,21 +256,19 @@
}
bool
-lldb_private::formatters::VectorIteratorSyntheticFrontEnd::MightHaveChildren ()
+VectorIteratorSyntheticFrontEnd::MightHaveChildren()
{
return true;
}
size_t
-lldb_private::formatters::VectorIteratorSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
+VectorIteratorSyntheticFrontEnd::GetIndexOfChildWithName(const ConstString &name)
{
if (name == ConstString("item"))
return 0;
return UINT32_MAX;
}
-lldb_private::formatters::VectorIteratorSyntheticFrontEnd::~VectorIteratorSyntheticFrontEnd() = default;
-
bool
lldb_private::formatters::LibStdcppStringSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options)
{
@@ -360,3 +382,95 @@
}
return false;
}
+
+LibStdcppSharedPtrSyntheticFrontEnd::LibStdcppSharedPtrSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp)
+ : SyntheticChildrenFrontEnd(*valobj_sp)
+{
+ if (valobj_sp)
+ Update();
+}
+
+size_t
+LibStdcppSharedPtrSyntheticFrontEnd::CalculateNumChildren()
+{
+ return 1;
+}
+
+lldb::ValueObjectSP
+LibStdcppSharedPtrSyntheticFrontEnd::GetChildAtIndex(size_t idx)
+{
+ ValueObjectSP valobj_sp = m_backend.GetSP();
+ if (!valobj_sp)
+ return lldb::ValueObjectSP();
+
+ if (idx == 0)
+ return valobj_sp->GetChildMemberWithName(ConstString("_M_ptr"), true);
+ else
+ return lldb::ValueObjectSP();
+}
+
+bool
+LibStdcppSharedPtrSyntheticFrontEnd::Update()
+{
+ return false;
+}
+
+bool
+LibStdcppSharedPtrSyntheticFrontEnd::MightHaveChildren()
+{
+ return true;
+}
+
+size_t
+LibStdcppSharedPtrSyntheticFrontEnd::GetIndexOfChildWithName(const ConstString &name)
+{
+ if (name == ConstString("_M_ptr"))
+ return 0;
+ return UINT32_MAX;
+}
+
+SyntheticChildrenFrontEnd *
+lldb_private::formatters::LibStdcppSharedPtrSyntheticFrontEndCreator(CXXSyntheticChildren *,
+ lldb::ValueObjectSP valobj_sp)
+{
+ return (valobj_sp ? new LibStdcppSharedPtrSyntheticFrontEnd(valobj_sp) : nullptr);
+}
+
+bool
+lldb_private::formatters::LibStdcppSmartPointerSummaryProvider(ValueObject &valobj, Stream &stream,
+ const TypeSummaryOptions &options)
+{
+ ValueObjectSP valobj_sp(valobj.GetNonSyntheticValue());
+ if (!valobj_sp)
+ return false;
+
+ ValueObjectSP ptr_sp(valobj_sp->GetChildMemberWithName(ConstString("_M_ptr"), true));
+ if (!ptr_sp)
+ return false;
+
+ ValueObjectSP usecount_sp(
+ valobj_sp->GetChildAtNamePath({ConstString("_M_refcount"), ConstString("_M_pi"), ConstString("_M_use_count")}));
+ if (!usecount_sp)
+ return false;
+
+ if (ptr_sp->GetValueAsUnsigned(0) == 0 || usecount_sp->GetValueAsUnsigned(0) == 0)
+ {
+ stream.Printf("nullptr");
+ return true;
+ }
+
+ 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))
+ {
+ return true;
+ }
+ }
+
+ stream.Printf("ptr = 0x%" PRIx64, ptr_sp->GetValueAsUnsigned(0));
+ return true;
+}