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122 lines
2.5 KiB
122 lines
2.5 KiB
/*
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* Next.h
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*
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* Created on: 26.12.2012
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* Author: Christian Dehnert
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*/
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#ifndef STORM_FORMULA_ABSTRACT_EVENTUALLY_H_
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#define STORM_FORMULA_ABSTRACT_EVENTUALLY_H_
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#include "src/formula/abstract/AbstractFormula.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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namespace abstract {
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/*!
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* @brief
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* Class for an abstract (path) formula tree with an Eventually node as root.
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*
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* Has one formula as sub formula/tree.
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*
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* @par Semantics
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* The formula holds iff eventually \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 nullptr before deletion)
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*
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* @tparam FormulaType The type of the subformula.
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* The instantiation of FormulaType should be a subclass of AbstractFormula, as the functions
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* "toString" and "conforms" of the subformulas are needed.
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*
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* @see AbstractFormula
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*/
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template <class T, class FormulaType>
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class Eventually : public virtual AbstractFormula<T> {
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public:
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/*!
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* Empty constructor
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*/
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Eventually() {
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this->child = nullptr;
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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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Eventually(FormulaType* child) {
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this->child = child;
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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 nullptr before deletion)
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*/
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virtual ~Eventually() {
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if (child != nullptr) {
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delete child;
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}
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}
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/*!
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* @returns the child node
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*/
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const FormulaType& getChild() const {
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return *child;
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}
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/*!
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* Sets the subtree
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* @param child the new child node
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*/
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void setChild(FormulaType* child) {
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this->child = child;
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}
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/*!
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*
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* @return True if the child node is set, i.e. it does not point to nullptr; false otherwise
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*/
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bool childIsSet() const {
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return child != nullptr;
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}
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/*!
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* @returns a string representation of the formula
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*/
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virtual std::string toString() const {
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std::string result = "F ";
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result += child->toString();
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return result;
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}
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/*!
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* @brief Checks if the subtree conforms to some logic.
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*
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* @param checker Formula checker object.
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* @return true iff the subtree conforms to some logic.
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*/
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virtual bool conforms(const AbstractFormulaChecker<T>& checker) const {
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return checker.conforms(this->child);
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}
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private:
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FormulaType* child;
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};
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} //namespace abstract
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} //namespace formula
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} //namespace storm
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#endif /* STORM_FORMULA_ABSTRACT_EVENTUALLY_H_ */
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