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module;
#include <asio.hpp>
#include <concepts>
#include <span>
export module ttwhy.core:concepts;
namespace ttwhy
{
export template<typename Candidate>
concept scanner = requires(Candidate a, std::span<char const> buffer) {
{ a.process(buffer) } -> std::same_as<void>;
{ a.timeout() } -> std::same_as<void>;
{ a.is_pending() } -> std::same_as<bool>;
};
export template<typename Candidate, typename Event>
concept router = requires(Candidate candidate, Event event) {
{ candidate.process(event) } -> std::same_as<asio::awaitable<void>>;
};
export template<typename Sink, typename Event>
concept event_sink = requires(Sink sink, Event event) {
{ sink(event) } -> std::same_as<void>;
};
} // namespace ttwhy
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