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/* Copyright (C) 2021 Nikolaj J. Ulrik <nikolaj@njulrik.dk>,
* Simon M. Virenfeldt <simon@simwir.dk>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef VERIFYPN_DISTANCEHEURISTIC_H
#define VERIFYPN_DISTANCEHEURISTIC_H
#include "LTL/SuccessorGeneration/Heuristic.h"
#include <utility>
#include "PetriEngine/PQL/Contexts.h"
namespace LTL {
class DistanceHeuristic : public Heuristic {
public:
DistanceHeuristic(const PetriEngine::PetriNet *net, PetriEngine::PQL::Condition_ptr cond) : _net(net), _cond(std::move(cond)) {}
uint32_t eval(const Structures::ProductState &state, uint32_t tid) override
{
PetriEngine::PQL::DistanceContext context{_net, state.marking()};
return _cond->distance(context);
}
std::ostream &output(std::ostream &os) {
return os << "DIST_HEUR";
}
private:
const PetriEngine::PetriNet *_net;
const PetriEngine::PQL::Condition_ptr _cond;
};
}
#endif //VERIFYPN_DISTANCEHEURISTIC_H
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