event_handler.hpp

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#pragma once
 
#include <libusb.h>
#include <stop_token>
#include <utility>
 
namespace co_usb::ev::detail
{
 
template <typename Ty>
concept EventHandler = requires(Ty handler) {
    {
        handler.start(std::declval<libusb_context *>(), std::declval<std::stop_token>())
    } -> std::same_as<bool>;
    { handler.ref() } noexcept -> std::same_as<void>;
    { handler.unref() } noexcept -> std::same_as<void>;
    { handler.stop() } -> std::same_as<void>;
};
 
} // namespace co_usb::ev::detail