Roland Conybeare
28b6d457c0
git-subtree-dir: xo-reactor git-subtree-mainline:dd1a6b1afcgit-subtree-split:e3a53d10e6
33 lines
915 B
C++
33 lines
915 B
C++
/* @file Reducer.hpp */
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#pragma once
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#include "xo/reactor/EventTimeFn.hpp"
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namespace xo {
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namespace reactor {
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/* LastReducer, HeapReducer inherit ReducerBase */
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template<typename Event, typename EventTimeFn>
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class ReducerBase {
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static_assert(EventTimeConcept<Event, EventTimeFn>);
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public:
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using utc_nanos = xo::time::utc_nanos;
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public:
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ReducerBase() = default;
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ReducerBase(EventTimeFn const & evtfn) : event_tm_fn_{evtfn} {}
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utc_nanos event_tm(Event const & ev) const { return this->event_tm_fn_(ev); }
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private:
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/* Event ev = ...;
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* .event_tm_fn(ev) -> utc_nanos
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* reports event time associated with ev
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*/
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EventTimeFn event_tm_fn_;
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}; /*ReducerBase*/
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} /*namespace reactor*/
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} /*namespace xo*/
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/* end Reducer.hpp */
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