module;

#include <concepts>
#include <span>
#include <string>

export module ttwhy.scanners:concepts;

import :events;

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 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