From 4a8ba9eb60ca51da6154190f30b63619b7db9d4a Mon Sep 17 00:00:00 2001
From: Simon Rozman <simon@rozman.si>
Date: Wed, 24 Jan 2024 12:26:54 +0100
Subject: [PATCH] mapping: add + operator

This allows cleaner arithmetic when adjusting mapping by an offset.

Signed-off-by: Simon Rozman <simon@rozman.si>
---
 include/stdex/mapping.hpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/stdex/mapping.hpp b/include/stdex/mapping.hpp
index 3d5164f03..048f17c65 100644
--- a/include/stdex/mapping.hpp
+++ b/include/stdex/mapping.hpp
@@ -55,6 +55,18 @@ namespace stdex
 		/// \returns true if mappings are different or false otherwise
 		///
 		bool operator!=(const mapping& other) const { return !operator==(other); }
+
+		///
+		/// Adds two mappings by components
+		///
+		/// \param[in] other  Second mapping
+		///
+		/// \returns Resulting mapping
+		///
+		mapping operator+(_In_ const mapping& other) const
+		{
+			return mapping(from + other.from, to + other.to);
+		}
 	};
 
 	template <class T, class AX = std::allocator<mapping<T>>>