tempest/src/storm-dft/storage/dft/elements/DFTSpare.h

#pragma once 


#include "DFTGate.h"
namespace storm {
    namespace storage {
        

        template<typename ValueType>
        class DFTSpare : public DFTGate<ValueType> {

        public:
            DFTSpare(size_t id, std::string const& name, std::vector<std::shared_ptr<DFTElement<ValueType>>> const& children = {}) :
                    DFTGate<ValueType>(id, name, children)
            {}
            
            std::string typestring() const override {
                return "SPARE";
            }

            virtual DFTElementType type() const override {
                return DFTElementType::SPARE;
            }

            bool isSpareGate() const override {
                return true;
            }
            
            void fail(DFTState<ValueType>& state, DFTStateSpaceGenerationQueues<ValueType>& queues) const {
                DFTGate<ValueType>::fail(state, queues);
                state.finalizeUses(this->mId);
            }
            
            void failsafe(DFTState<ValueType>& state, DFTStateSpaceGenerationQueues<ValueType>& queues) const {
                DFTGate<ValueType>::failsafe(state, queues);
                state.finalizeUses(this->mId);
            }
            
            bool checkDontCareAnymore(storm::storage::DFTState<ValueType>& state, DFTStateSpaceGenerationQueues<ValueType>& queues) const override {
                if (DFTGate<ValueType>::checkDontCareAnymore(state, queues)) {
                    state.finalizeUses(this->mId);
                    return true;
                }
                return false;
            }
            
            void checkFails(storm::storage::DFTState<ValueType>& state, DFTStateSpaceGenerationQueues<ValueType>& queues) const override {
                if(state.isOperational(this->mId)) {
                    size_t uses = state.uses(this->mId);
                    if(!state.isOperational(uses)) {
                        bool claimingSuccessful = state.claimNew(this->mId, uses, this->mChildren);
                        if(!claimingSuccessful) {
                            this->fail(state, queues);
                        }
                    }                  
                } 
            }

            void checkFailsafe(storm::storage::DFTState<ValueType>& state, DFTStateSpaceGenerationQueues<ValueType>& queues) const override {
                if(state.isOperational(this->mId)) {
                    if(state.isFailsafe(state.uses(this->mId))) {
                        this->failsafe(state, queues);
                        this->childrenDontCare(state, queues);
                    }
                }
            }
            
            std::vector<size_t> independentSubDft(bool blockParents, bool sparesAsLeaves = false) const override {
                auto prelRes = DFTElement<ValueType>::independentSubDft(blockParents);
                if(prelRes.empty()) {
                    // No elements (especially not this->id) in the prelimanry result, so we know already that it is not a subdft.
                    return prelRes;
                }
                std::set<size_t> unit(prelRes.begin(), prelRes.end());
                std::vector<size_t> pids = this->parentIds();
                if (!sparesAsLeaves) {
                    for(auto const& child : this->mChildren) {
                        child->extendSubDft(unit, pids, blockParents, sparesAsLeaves);
                        if(unit.empty()) {
                            // Parent in the subdft, ie it is *not* a subdft
                            break;
                        }
                    }
                }
                return std::vector<size_t>(unit.begin(), unit.end());
            }
            
            void extendSubDft(std::set<size_t>& elemsInSubtree, std::vector<size_t> const& parentsOfSubRoot, bool blockParents, bool sparesAsLeaves) const override {
                if(elemsInSubtree.count(this->id()) > 0) return;
                DFTElement<ValueType>::extendSubDft(elemsInSubtree, parentsOfSubRoot, blockParents, sparesAsLeaves);
                if(elemsInSubtree.empty()) {
                    // Parent in the subdft, ie it is *not* a subdft
                    return;
                }
                if (!sparesAsLeaves) {
                    for(auto const& child : this->mChildren) {
                        child->extendSubDft(elemsInSubtree, parentsOfSubRoot, blockParents, sparesAsLeaves);
                        if(elemsInSubtree.empty()) {
                            // Parent in the subdft, ie it is *not* a subdft
                            return;
                        }
                    }
                }
            }


        };

    }
}