struct keyinfo{
    bool pressedOnce;
    long long time;
    keyinfo() : pressedOnce(false), time(0){}
    virtual void single_press() = 0;
};

struct esc_info : public keyinfo{
    void single_press(){

    }
    void double_press(){

    }
};
struct shift_info : public keyinfo{
    void single_press(){

    }
    void double_press(){

    }
};
struct ctrl_info : public keyinfo{
    void single_press(){

    }
    void double_press(){

    }
};
struct alt_info : public keyinfo{
    void single_press(){

    }
    void double_press(){

    }
};
struct super_info : public keyinfo{
    void single_press(){

    }
    void double_press(){

    }
};
struct shift_info : public keyinfo{
    void single_press(){

    }
    void double_press(){

    }
};