feat(Core/Misc): Add .Size() to TypeUnorderedMapContainer for stats/debugging (#6080)

* cherry-picked commit (TrinityCore/TrinityCore@d53a2de)

Co-Authored-By: Shauren <shauren.trinity@gmail.com>

src/common/Dynamic/TypeContainer.h

@@ -138,6 +138,14 @@ public:
         return Acore::Find(_elements, handle, (SPECIFIC_TYPE*)nullptr);
     }
 
+    template<class SPECIFIC_TYPE>
+    std::size_t Size() const
+    {
+        std::size_t size = 0;
+        Acore::Size(_elements, &size, (SPECIFIC_TYPE*)nullptr);
+        return size;
+    }
+
     ContainerUnorderedMap<OBJECT_TYPES, KEY_TYPE>& GetElements() { return _elements; }
     ContainerUnorderedMap<OBJECT_TYPES, KEY_TYPE> const& GetElements() const { return _elements; }
 

src/common/Dynamic/TypeContainerFunctions.h

@@ -114,6 +114,33 @@ namespace Acore
         return ret ? ret : Remove(elements._TailElements, handle, (SPECIFIC_TYPE*)nullptr);
     }
 
+    // Count helpers
+    template<class SPECIFIC_TYPE, class KEY_TYPE>
+    bool Size(ContainerUnorderedMap<SPECIFIC_TYPE, KEY_TYPE> const& elements, std::size_t* size, SPECIFIC_TYPE* /*obj*/)
+    {
+        *size = elements._element.size();
+        return true;
+    }
+
+    template<class SPECIFIC_TYPE, class KEY_TYPE>
+    bool Size(ContainerUnorderedMap<TypeNull, KEY_TYPE> const& /*elements*/, std::size_t* /*size*/, SPECIFIC_TYPE* /*obj*/)
+    {
+        return false;
+    }
+
+    template<class SPECIFIC_TYPE, class KEY_TYPE, class T>
+    bool Size(ContainerUnorderedMap<T, KEY_TYPE> const& /*elements*/, std::size_t* /*size*/, SPECIFIC_TYPE* /*obj*/)
+    {
+        return false;
+    }
+
+    template<class SPECIFIC_TYPE, class KEY_TYPE, class H, class T>
+    bool Size(ContainerUnorderedMap<TypeList<H, T>, KEY_TYPE> const& elements, std::size_t* size, SPECIFIC_TYPE* /*obj*/)
+    {
+        bool ret = Size(elements._elements, size, (SPECIFIC_TYPE*)nullptr);
+        return ret ? ret : Size(elements._TailElements, size, (SPECIFIC_TYPE*)nullptr);
+    }
+
     /* ContainerMapList Helpers */
     // count functions
     template<class SPECIFIC_TYPE>