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120 lines
3.0 KiB
120 lines
3.0 KiB
/*
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* Next.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_CSL_NEXT_H_
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#define STORM_FORMULA_CSL_NEXT_H_
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#include "AbstractPathFormula.h"
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#include "AbstractStateFormula.h"
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#include "src/formula/abstract/Next.h"
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#include "src/formula/AbstractFormulaChecker.h"
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namespace storm {
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namespace formula {
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namespace csl {
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template <class T> class Next;
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/*!
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* @brief Interface class for model checkers that support Next.
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*
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* All model checkers that support the formula class Next 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 INextModelChecker {
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public:
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/*!
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* @brief Evaluates Next 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 std::vector<T>* checkNext(const Next<T>& obj, bool qualitative) const = 0;
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};
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/*!
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* @brief
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* Class for a Abstract (path) formula tree with a Next node as root.
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*
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* Has two Abstract state formulas as sub formulas/trees.
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*
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* @par Semantics
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* The formula holds iff in the next step, \e child holds
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*
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* The subtree is seen as part of the object and deleted with the object
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* (this behavior can be prevented by setting them to NULL before deletion)
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*
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* @see AbstractPathFormula
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* @see AbstractFormula
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*/
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template <class T>
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class Next : public storm::formula::abstract::Next<T, AbstractStateFormula<T>>,
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public AbstractPathFormula<T> {
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public:
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/*!
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* Empty constructor
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*/
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Next() {
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//intentionally left empty
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}
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/*!
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* Constructor
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*
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* @param child The child node
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*/
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Next(AbstractStateFormula<T>* child)
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: storm::formula::abstract::Next<T, AbstractStateFormula<T>>(child) {
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//intentionally left empty
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}
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/*!
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* Constructor.
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*
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* Also deletes the subtree.
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* (this behaviour can be prevented by setting the subtrees to NULL before deletion)
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*/
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virtual ~Next() {
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//intentionally left empty
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}
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/*!
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* Clones the called object.
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*
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* Performs a "deep copy", i.e. the subtrees of the new object are clones of the original ones
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*
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* @returns a new BoundedUntil-object that is identical the called object.
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*/
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virtual AbstractPathFormula<T>* clone() const {
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Next<T>* result = new Next<T>();
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if (this->childIsSet()) {
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result->setChild(this->getChild().clone());
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}
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return result;
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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 vector indicating the probability that the formula holds for each state.
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*/
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virtual std::vector<T> *check(const storm::modelchecker::AbstractModelChecker<T>& modelChecker, bool qualitative) const {
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return modelChecker.template as<INextModelChecker>()->checkNext(*this, qualitative);
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}
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};
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} //namespace csl
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} //namespace formula
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} //namespace storm
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#endif /* STORM_FORMULA_CSL_NEXT_H_ */
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