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/*
* Abstractformula.h
*
* Created on: 19.10.2012
* Author: Thomas Heinemann
*/
#ifndef STORM_FORMULA_ABSTRACT_ABSTRACTFORMULA_H_
#define STORM_FORMULA_ABSTRACT_ABSTRACTFORMULA_H_
#include <string>
namespace storm {
namespace formula {
namespace abstract {
template <class T> class AbstractFormula;
}
}
}
#include "src/modelchecker/ForwardDeclarations.h"
#include "src/formula/AbstractFormulaChecker.h"
namespace storm {
namespace formula {
namespace abstract {
//abstract
/*!
* @brief Abstract base class for Abstract formulas in general.
*
* @attention This class is abstract.
* @note Formula classes do not have copy constructors. The parameters of the constructors are usually the subtrees, so
* the syntax conflicts with copy constructors for unary operators. To produce an identical object, the classes
* AbstractFormula and AbstractFormula offer the method clone().
*
* This is the base class for every formula class in every logic.
*/
template <class T>
class AbstractFormula {
public:
/*!
* Virtual destructor.
*/
virtual ~AbstractFormula() { }
/*!
* @brief Return string representation of this formula.
*
* @note very subclass must implement this method.
*
* @returns a string representation of the formula
*/
virtual std::string toString() const = 0;
/*!
* @brief Checks if all subtrees are valid in some logic.
*
* @note Every subclass must implement this method.
*
* This method is given a checker object that knows which formula
* classes are allowed within the logic the checker represents. Every
* subclass is supposed to call checker.conforms() for all child
* formulas and return true if and only if all those calls returned
* true.
*
* @param checker Checker object.
* @return true iff all subtrees are valid.
*/
virtual bool conforms(const AbstractFormulaChecker<T>& checker) const = 0;
};
} // namespace abstract
} // namespace formula
} // namespace storm
#endif /* STORM_FORMULA_ABSTRACT_ABSTRACTFORMULA_H_ */