From 8a831b1409492f9c0339ddef94a7d72f7019b336 Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Sat, 10 Jun 2023 15:58:30 -0400
Subject: [PATCH] Import sketch for a potential range dispatcher.
---
ClockReceiver/Dispatcher.hpp | 43 ++++++++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/ClockReceiver/Dispatcher.hpp b/ClockReceiver/Dispatcher.hpp
index 299b87816..e7046bce2 100644
--- a/ClockReceiver/Dispatcher.hpp
+++ b/ClockReceiver/Dispatcher.hpp
@@ -93,3 +93,46 @@ private:
}
#endif /* Dispatcher_hpp */
+
+/*
+template <typename ClassifierT, int x> constexpr int lower_bound() {
+ if constexpr (!x || ClassifierT::template type<x>() != ClassifierT::template type<x-1>()) {
+ return x;
+ } else {
+ return lower_bound<ClassifierT, x - 1>();
+ }
+}
+
+template <typename ClassifierT, typename TargetT>
+void range_dispatch(TargetT &destination, int start, int end) {
+#define case(x) case x: \
+ if constexpr (x+1 == ClassifierT::max || ClassifierT::template type<x+1>() != ClassifierT::template type<x>()) { \
+ const auto range_begin = std::max(start, lower_bound<ClassifierT, x>()); \
+ const auto range_end = std::min(end, x + 1); \
+ \
+ if(range_begin == lower_bound<ClassifierT, x>()) {\
+ destination.template begin<ClassifierT::template type<x>()>(range_begin); \
+ }\
+ destination.template perform<ClassifierT::template type<x>()>(range_begin, range_end); \
+ if(range_end == x+1) {\
+ destination.template end<ClassifierT::template type<x>()>(range_begin); \
+ }\
+ if(x+1 >= end) { \
+ break; \
+ } \
+ } \
+ [[fallthrough]];
+
+ switch(start) {
+ case(0)
+ case(1)
+ case(2)
+ case(3)
+ case(4)
+ case(5)
+ }
+
+#undef case
+}
+
+ */