From a4b92ca698770dc64639e51c76edb5dee16d2792 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@gmail.com>
Date: Sat, 20 Jun 2026 10:25:09 +0200
Subject: lib: switch to policy based scanner design

---
 ttwhy/scanners/concepts.cppm | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'ttwhy/scanners/concepts.cppm')

diff --git a/ttwhy/scanners/concepts.cppm b/ttwhy/scanners/concepts.cppm
index 003874c..8db3ae6 100644
--- a/ttwhy/scanners/concepts.cppm
+++ b/ttwhy/scanners/concepts.cppm
@@ -2,9 +2,12 @@ module;
 
 #include <concepts>
 #include <span>
+#include <string>
 
 export module ttwhy.scanners:concepts;
 
+import :events;
+
 namespace ttwhy
 {
 
@@ -15,4 +18,11 @@ namespace ttwhy
     { a.is_pending() } -> std::same_as<bool>;
   };
 
+  export template<typename Sink>
+  concept ansi_sink = requires(Sink sink) {
+    { sink(std::declval<ttwhy::scanners::character_event>()) } -> std::same_as<void>;
+    { sink(std::declval<ttwhy::scanners::control_event>()) } -> std::same_as<void>;
+    { sink(std::declval<ttwhy::scanners::navigation_event>()) } -> std::same_as<void>;
+  };
+
 }  // namespace ttwhy
-- 
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