source: source/ariba/utility/addressing/facades/comparable_v.hpp@ 5519

// comparable_v.hpp, created on 30.06.2009 by Sebastian Mies

#ifndef COMPARABLE_V_HPP_
#define COMPARABLE_V_HPP_

#include "vfacade.hpp"

/**
 * TODO: Doc
 *
 * @author Sebastian Mies <mies@tm.uka.de>
 */
class comparable_v {
public:
        //--- comparable_v --------------------------------------------------------

        /// implements comparison operators
        virtual int compare_to(const comparable_v& rhs) const = 0;

        /// convenience method for comparison
        inline int compare_to(const comparable_v* rhs) const {
                return compare_to(*rhs);
        }

        /// convenience method for comparison
        inline bool operator==(const comparable_v& rhs) const {
                return compare_to(rhs) == 0;
        }

        /// convenience method for comparison
        inline bool operator!=(const comparable_v& rhs) const {
                return compare_to(rhs) != 0;
        }

        /// convenience method for comparison
        inline bool operator<(const comparable_v& rhs) const {
                return compare_to(rhs) < 0;
        }

        /// convenience method for comparison
        inline bool operator<=(const comparable_v& rhs) const {
                return compare_to(rhs) <= 0;
        }

        /// convenience method for comparison
        inline bool operator>(const comparable_v& rhs) const {
                return compare_to(rhs) > 0;
        }

        /// convenience method for comparison
        inline bool operator>=(const comparable_v& rhs) const {
                return compare_to(rhs) >= 0;
        }
};

typedef vfacade<comparable_v> comparable_vf;

template<class NonVirtual, class AdaptorType>
class vobject_hull<NonVirtual, comparable_v, AdaptorType> : public comparable_v {
private:
        typename AdaptorType::template adaptor_type<NonVirtual> obj;

public:
        template<typename T>
        explicit vobject_hull(T& obj) :
                obj(obj) {
        }

        explicit vobject_hull() :
                obj() {
        }

        //--- comparable_v --------------------------------------------------------

        /// implements comparison operators
        virtual int compare_to(const comparable_v& rhs) const {
                return obj->compare_to(rhs);
        }
};



#endif /* COMPARABLE_V_HPP_ */