From 8099e928dc5b35bacf10f0e1119e675d42df6883 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Fri, 4 Apr 2025 21:07:31 +0300
Subject: [PATCH] Add std::format formatter for ecs::handle

---
 libs/ecs/include/psemek/ecs/handle.hpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/libs/ecs/include/psemek/ecs/handle.hpp b/libs/ecs/include/psemek/ecs/handle.hpp
index ef2c054d..2066ad01 100644
--- a/libs/ecs/include/psemek/ecs/handle.hpp
+++ b/libs/ecs/include/psemek/ecs/handle.hpp
@@ -3,6 +3,7 @@
 #include <psemek/ecs/detail/id.hpp>
 
 #include <iostream>
+#include <format>
 
 namespace psemek::ecs
 {
@@ -46,4 +47,18 @@ namespace std
 		}
 	};
 
+	template <typename Char>
+	struct formatter<::psemek::ecs::handle, Char>
+	{
+		constexpr auto parse(std::format_parse_context & ctx)
+		{
+			return ctx.begin();
+		}
+
+		auto format(::psemek::ecs::handle const & handle, std::format_context & ctx) const
+		{
+			return std::format_to(ctx.out(), "({},{})", handle.id, handle.epoch);
+		}
+	};
+
 }