[DataFormatters] Add formatter for libc++ std::unique_ptr

This adds a formatter for libc++ std::unique_ptr.

I also refactored GetValueOfCompressedPair(...) out of LibCxxList.cpp since I need the same functionality and it made sense to share it.

Differential Revision: https://reviews.llvm.org/D76476

1 files changed, 11 insertions, 0 deletions

diff --git a/lldb/source/DataFormatters/FormattersHelpers.cpp b/lldb/source/DataFormatters/FormattersHelpers.cpp
index 96e93808c18e..7944ff06eee5 100644
--- a/lldb/source/DataFormatters/FormattersHelpers.cpp
+++ b/lldb/source/DataFormatters/FormattersHelpers.cpp
@@ -142,3 +142,14 @@ lldb_private::formatters::GetArrayAddressOrPointerValue(ValueObject &valobj) {
 
   return data_addr;
 }
+
+lldb::ValueObjectSP
+lldb_private::formatters::GetValueOfLibCXXCompressedPair(ValueObject &pair) {
+  ValueObjectSP value =
+      pair.GetChildMemberWithName(ConstString("__value_"), true);
+  if (!value) {
+    // pre-r300140 member name
+    value = pair.GetChildMemberWithName(ConstString("__first_"), true);
+  }
+  return value;
+}