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Conversion can be a separate step.

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This commit is contained in:
Thomas Harte 2023-06-12 15:34:44 -04:00
parent 8a831b1409
commit 05d2e78f80
1 changed files with 11 additions and 19 deletions
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30
ClockReceiver/Dispatcher.hpp
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@ -11,18 +11,10 @@
namespace Dispatcher {
/// The unity function; converts n directly to n.
struct UnitConverter {
constexpr int operator ()(int n) {
return n;
}
};
template <int max, typename SequencerT, typename ConverterT = UnitConverter>
template <int max, typename SequencerT>
struct Dispatcher {
/// Perform @c target.perform<n>() for the input range `start <= n < end`;
/// @c ConverterT()(n) will be applied to each individual step before it becomes the relevant template argument.
/// Perform @c target.perform<n>() for the input range `start <= n < end`.
template <typename... Args>
void dispatch(SequencerT &target, int start, int end, Args&&... args) {
@ -46,15 +38,15 @@ private:
//
// Sensible choices by the optimiser are assumed.
#define index(n) \
case n: \
if constexpr (n <= max) { \
if constexpr (n == max) return; \
if constexpr (n < max) { \
if(use_end && end == n) return; \
} \
target.template perform<ConverterT()(n)>(args...); \
} \
#define index(n) \
case n: \
if constexpr (n <= max) { \
if constexpr (n == max) return; \
if constexpr (n < max) { \
if(use_end && end == n) return; \
} \
target.template perform<n>(args...); \
} \
[[fallthrough]];
#define index2(n) index(n); index(n+1);