free_endgaps.hh

#ifndef LOCARNA_FREE_ENDGAPS_HH
#define LOCARNA_FREE_ENDGAPS_HH
 
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
 
namespace LocARNA {
    class FreeEndgaps {
        std::vector<bool> desc;
 
    public:
        explicit FreeEndgaps(const std::string &d) : desc(4,false) {
            if (d.length() >= 4) {
                for (size_t i = 0; i < 4; i++)
                    desc[i] = (d[i] == '+');
            }
        }
 
        FreeEndgaps(): desc(4,false) {
        }
 
        bool
        allow_left_1() const {
            return desc[0];
        }
 
        bool
        allow_right_1() const {
            return desc[1];
        }
 
        bool
        allow_left_2() const {
            return desc[2];
        }
 
        bool
        allow_right_2() const {
            return desc[3];
        }
 
        // change (in place) to free endgaps for reversed sequences
        FreeEndgaps
        reverse() const {
            FreeEndgaps rev_fe;
            rev_fe.desc = { desc[1], desc[0], desc[3], desc[2] };
            return rev_fe;
        }
 
    };
} // end namespace LocARNA
 
#endif // LOCARNA_FREE_ENDGAPS_HH