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125 lines
2.8 KiB
125 lines
2.8 KiB
/*
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* Ap.h
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*
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* Created on: 19.10.2012
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* Author: Thomas Heinemann
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*/
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#ifndef STORM_FORMULA_AP_H_
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#define STORM_FORMULA_AP_H_
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#include "src/formula/AbstractStateFormula.h"
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#include "src/formula/AbstractFormulaChecker.h"
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#include "src/modelchecker/ForwardDeclarations.h"
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namespace storm {
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namespace formula {
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template <class T> class Ap;
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/*!
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* @brief Interface class for model checkers that support Ap.
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*
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* All model checkers that support the formula class Ap must inherit
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* this pure virtual class.
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*/
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template <class T>
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class IApModelChecker {
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public:
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/*!
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* @brief Evaluates Ap formula within a model checker.
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*
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* @param obj Formula object with subformulas.
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* @return Result of the formula for every node.
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*/
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virtual storm::storage::BitVector* checkAp(const Ap<T>& obj) const = 0;
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};
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/*!
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* @brief
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* Class for a Abstract formula tree with atomic proposition as root.
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*
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* This class represents the leaves in the formula tree.
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*
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* @see AbstractStateFormula
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* @see AbstractFormula
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*/
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template <class T>
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class Ap : public AbstractStateFormula<T> {
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public:
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/*!
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* Constructor
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*
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* Creates a new atomic proposition leaf, with the label Ap
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*
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* @param ap The string representing the atomic proposition
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*/
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Ap(std::string ap) {
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this->ap = ap;
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}
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/*!
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* Destructor.
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* At this time, empty...
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*/
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virtual ~Ap() { }
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/*!
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* @returns the name of the atomic proposition
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*/
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const std::string& getAp() const {
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return ap;
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}
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/*!
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* @returns a string representation of the leaf.
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*
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*/
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virtual std::string toString() const {
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return getAp();
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}
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/*!
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* Clones the called object.
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*
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* @returns a new Ap-object that is identical the called object.
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*/
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virtual AbstractStateFormula<T>* clone() const {
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return new Ap(ap);
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}
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/*!
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* Calls the model checker to check this formula.
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* Needed to infer the correct type of formula class.
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*
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* @note This function should only be called in a generic check function of a model checker class. For other uses,
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* the methods of the model checker should be used.
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*
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* @returns A bit vector indicating all states that satisfy the formula represented by the called object.
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*/
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virtual storm::storage::BitVector *check(const storm::modelChecker::AbstractModelChecker<T>& modelChecker) const {
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return modelChecker.template as<IApModelChecker>()->checkAp(*this);
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}
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/*!
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* @brief Checks if all subtrees conform to some logic.
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*
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* As atomic propositions have no subformulas, we return true here.
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*
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* @param checker Formula checker object.
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* @return true
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*/
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virtual bool conforms(const AbstractFormulaChecker<T>& checker) const {
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return true;
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}
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private:
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std::string ap;
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};
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} //namespace formula
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} //namespace storm
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#endif /* STORM_FORMULA_AP_H_ */
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