Add a convenience function to FormatManager to setup an empty filter (one that suppresses all children, that is)

llvm-svn: 217891

lldb/source/DataFormatters/FormatManager.cpp

@@ -957,6 +957,15 @@ static void AddFilter  (TypeCategoryImpl::SharedPointer category_sp,
     else
         category_sp->GetTypeFiltersContainer()->Add(type_name,filter_sp);
 }
+
+static void AddEmptyFilter  (TypeCategoryImpl::SharedPointer category_sp,
+                             const char* description,
+                             ConstString type_name,
+                             ScriptedSyntheticChildren::Flags flags,
+                             bool regex = false)
+{
+    AddFilter(category_sp, {}, description, type_name, flags, regex);
+}
 #endif
 
 void