#pragma once

#include "storm/adapters/sylvan.h"

#include <boost/functional/hash.hpp>

namespace storm {
    namespace dd {
        
        struct SylvanMTBDDPairHash {
            std::size_t operator()(std::pair<MTBDD, MTBDD> const& pair) const {
                std::hash<MTBDD> hasher;
                std::size_t seed = hasher(pair.first);
                boost::hash_combine(seed, hasher(pair.second));
                return seed;
            }
        };
        
        struct SylvanMTBDDPairLess {
            std::size_t operator()(std::pair<MTBDD, MTBDD> const& a, std::pair<MTBDD, MTBDD> const& b) const {
                if (a.first < b.first) {
                    return true;
                } else if (a.first == b.first && a.second < b.second) {
                    return true;
                }
                return false;
            }
        };
        
    }
}