From 077ececcf880409ccbf620539eb142aebf45e574 Mon Sep 17 00:00:00 2001
From: Mateusz Karbowiak <69864511+mtszkarbowiak@users.noreply.github.com>
Date: Sun, 6 Oct 2024 13:20:00 +0200
Subject: [PATCH] `Nullable` match

---
 Source/Engine/Core/Types/Nullable.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/Source/Engine/Core/Types/Nullable.h b/Source/Engine/Core/Types/Nullable.h
index 9d8f3f65b..e1aae2ea3 100644
--- a/Source/Engine/Core/Types/Nullable.h
+++ b/Source/Engine/Core/Types/Nullable.h
@@ -331,6 +331,26 @@ public:
     {
         return _hasValue;
     }
+
+
+    /// <summary>
+    /// Matches the wrapped value with a handler for the value or a handler for the null value.
+    /// </summary>
+    /// <param name="valueHandler">Value visitor handling valid nullable value.</param>
+    /// <param name="nullHandler">Null visitor handling invalid nullable value.</param>
+    /// <returns>Result of the call of one of handlers. Handlers must share the same result type.</returns>
+    template<typename ValueVisitor, typename NullVisitor>
+    FORCE_INLINE auto Match(ValueVisitor valueHandler, NullVisitor nullHandler) const
+    {
+        if (_hasValue)
+        {
+            return valueHandler(_value);
+        }
+        else
+        {
+            return nullHandler();
+        }
+    }
 };
 
 /// <summary>