FPPModule.h

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/**
 * @file FPPModule.h
 *
 * @version 2015-09-10
 * Created on 2015-09-10.
 */
 
#pragma once
 
#include <smtrat-solver/PModule.h>
#include "FPPStatistics.h"
#include "FPPSettings.h"
 
namespace smtrat
{
    template<typename Settings>
    class FPPModule : public PModule
    {
        private:
#ifdef SMTRAT_DEVOPTION_Statistics
            FPPStatistics& mStatistics = statistics_get<FPPStatistics>(Settings::moduleName);
#endif
            FormulaT mFormulaAfterPreprocessing = FormulaT(carl::FormulaType::TRUE);
            Model mPartialModel;
            ///
            typename Settings::Preprocessor mPreprocessor;
        public:
            typedef Settings SettingsType;
            FPPModule( const ModuleInput* _formula, Conditionals& _conditionals, Manager* _manager = NULL );
 
            ~FPPModule();
 
            // Main interfaces.
 
            /**
             * Informs the module about the given constraint. It should be tried to inform this
             * module about any constraint it could receive eventually before assertSubformula
             * is called (preferably for the first time, but at least before adding a formula
             * containing that constraint).
             * @param _constraint The constraint to inform about.
             * @return false, if it can be easily decided whether the given constraint is inconsistent;
             *        true, otherwise.
             */
            bool informCore( const FormulaT& _constraint );
 
            /**
             * Informs all backends about the so far encountered constraints, which have not yet been communicated.
             * This method must not and will not be called more than once and only before the first runBackends call.
             */
            void init();
 
            /**
             * The module has to take the given sub-formula of the received formula into account.
             *
             * @param _subformula The sub-formula to take additionally into account.
             * @return false, if it can be easily decided that this sub-formula causes a conflict with
             *        the already considered sub-formulas;
             *        true, otherwise.
             */
            bool addCore( ModuleInput::const_iterator _subformula );
 
            /**
             * Removes the subformula of the received formula at the given position to the considered ones of this module.
             * Note that this includes every stored calculation which depended on this subformula, but should keep the other
             * stored calculation, if possible, untouched.
             *
             * @param _subformula The position of the subformula to remove.
             */
            void removeCore( ModuleInput::const_iterator _subformula );
 
            /**
             * Updates the current assignment into the model.
             * Note, that this is a unique but possibly symbolic assignment maybe containing newly introduced variables.
             */
            void updateModel() const;
 
            /**
             * Checks the received formula for consistency.
             * @return SAT, if the received formula is satisfiable;
             *       UNSAT,   if the received formula is not satisfiable;
             *       Unknown, otherwise.
             */
            Answer checkCore();
 
    };
}