<rdar://problem/12493007>

Added a new API call to help efficiently determine if a SBValue could have children:

     bool
     SBValue::MightHaveChildren ();
     
This is inteneded to be used bui GUI programs that need to show if a SBValue needs a disclosure triangle when displaying a hierarchical type in a tree view without having to complete the type (by calling SBValue::GetNumChildren()) as completing the type is expensive.

llvm-svn: 166460

1 files changed, 14 insertions, 0 deletions

diff --git a/lldb/source/API/SBValue.cpp b/lldb/source/API/SBValue.cpp
index 318029fdc43..9e80310f045 100644
--- a/lldb/source/API/SBValue.cpp
+++ b/lldb/source/API/SBValue.cpp
@@ -1354,6 +1354,20 @@ SBValue::GetValueAsUnsigned(uint64_t fail_value)
     return fail_value;
 }
 
+bool
+SBValue::MightHaveChildren ()
+{
+    LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
+    bool has_children = false;
+    lldb::ValueObjectSP value_sp(GetSP());
+    if (value_sp)
+        has_children = value_sp->MightHaveChildren();
+
+    if (log)
+        log->Printf ("SBValue(%p)::HasChildren() => %i", value_sp.get(), has_children);
+    return has_children;
+}
+
 uint32_t
 SBValue::GetNumChildren ()
 {