From 1c77a5e54900f2477e0c6e277af036b3e39703f6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Leclercq?= <lynix680@gmail.com>
Date: Sat, 17 Jul 2021 20:56:03 +0200
Subject: [PATCH] Core/Flags: Add std::hash specialization

---
 include/Nazara/Core/Flags.inl | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/include/Nazara/Core/Flags.inl b/include/Nazara/Core/Flags.inl
index cb51a277a..38fa6da74 100644
--- a/include/Nazara/Core/Flags.inl
+++ b/include/Nazara/Core/Flags.inl
@@ -3,6 +3,7 @@
 // For conditions of distribution and use, see copyright notice in Config.hpp
 
 #include <Nazara/Core/Flags.hpp>
+#include <utility>
 #include <Nazara/Core/Debug.hpp>
 
 namespace Nz
@@ -375,4 +376,19 @@ namespace Nz
 	}
 }
 
+namespace std
+{
+	template<typename E>
+	struct hash<Nz::Flags<E>>
+	{
+		std::size_t operator()(const Nz::Flags<E>& flags)
+		{
+			using UnderlyingType = typename Nz::Flags<E>::BitField;
+			using Hasher = hash<UnderlyingType>;
+			Hasher hasher;
+			return hasher(static_cast<UnderlyingType>(flags));
+		}
+	};
+}
+
 #include <Nazara/Core/DebugOff.hpp>