source: source/ariba/utility/addressing/facades/address_v.hpp@ 10789

#ifndef ADDRESS_V_H_
#define ADDRESS_V_H_

#include <stdint.h>
#include <string>
#include <iostream>

#include "vfacade.hpp"

#include "to_bytes_v.hpp"
#include "to_string_v.hpp"
#include "comparable_v.hpp"

#include "../detail/address_convenience.hpp"

namespace ariba {
namespace addressing {

using std::string;

/**
 * A virtual interface to a protocol address.
 *
 * @author Sebastian Mies <mies@tm.uka.de>
 */
class address_v: public detail::address_convenience<address_v> {
public:
        virtual ~address_v() {}
        
        //--- to_string_v ---------------------------------------------------------

        /// convert address to a string that can be used to reconstruct the address
        virtual string to_string() const = 0;

        /// Assigns an address using a human-readable
        virtual bool assign(const std::string& text) = 0;

        //--- to_bytes_v ----------------------------------------------------------

        /// returns true, if this address has a fixed size in bytes
        virtual bool is_bytes_size_static() const = 0;

        /// returns the number of bytes used for serialization of this address
        virtual size_t to_bytes_size() const = 0;

        /// converts this address to a binary representation
        virtual void to_bytes(uint8_t* bytes) const = 0;

        /// Assigns an address using a bunch of bytes
        virtual bool assign(const uint8_t* bytes, size_t size) = 0;

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

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

        //--- assignment ----------------------------------------------------------

        /// Assigns an address
        virtual bool assign(const address_v& rhs) = 0;

        //--- address info --------------------------------------------------------

        /// returns the name of the address
        virtual const string& type_name() const = 0;

        /// sets the type id, if possible
        virtual uint16_t type_id() const = 0;

        //--- cloneing and conversion ---------------------------------------------

        /// Obtain the underlaying data type or null if it does not match the type
        virtual void* data(const std::type_info& type) = 0;

        /// Clones this address
        virtual address_v* clone() const = 0;

        //--- convenience ---------------------------------------------------------

        template<class T>
        bool instanceof() const {
                void* value = const_cast<address_v*>(this)->data(typeid(T));
                return value!=NULL;
        }

        /// cast operator to detailed type
        template<class T>
        inline operator T&() {
                void* value = data(typeid(T));
                assert (value!=NULL);
                return *((T*) value);
        }

        /// cast operator to detailed type
        template<class T>
        inline operator T () const {
                return T( (const T&)*this );
        }

        /// cast operator to detailed type
        template<class T>
        inline operator const T& () const {
                void* value = const_cast<address_v*>(this)->data(typeid(T));
                assert (value!=NULL);
                return *((const T*) value);
        }
};

/// stream operator
std::ostream& operator<<(std::ostream& s, const address_v* addr);

/// define the virtual facade for the address
typedef vfacade<address_v> address_vf;

}} // namespace ariba::addressing

/// the virtual adaptor to certain class of objects
template<class NonVirtual, class AdaptorType>
class vobject_hull<NonVirtual, ariba::addressing::address_v, AdaptorType> : public ariba::addressing::address_v {

private:
        typedef ariba::addressing::address_v self;
        typename AdaptorType::template adaptor_type<NonVirtual> obj;

        static inline NonVirtual& conv(ariba::addressing::address_v* obj) {
                return *((NonVirtual*) obj->data(typeid(NonVirtual)));
        }

        static inline const NonVirtual& conv(const ariba::addressing::address_v* obj) {
                const NonVirtual* v =
                                (const NonVirtual*) const_cast<ariba::addressing::address_v*> (obj)->data(
                                                typeid(NonVirtual));
                return *v;
        }

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

        //--- assignment ----------------------------------------------------------

        /// Assigns an address
        virtual bool assign(const self& rhs) {
                return obj->assign(conv(&rhs));
        }

        //--- address info --------------------------------------------------------

        /// returns the name of the address
        virtual const string& type_name() const {
                return obj->type_name();
        }

        /// returns the id of the address
        virtual uint16_t type_id() const {
                return obj->type_id();
        }

        /// returns a capsule of the object
        virtual address_v* clone() const {
                return vcapsule<address_v> (*obj);
        }

        /// Obtain the underlaying data type or null if it does not match the type
        virtual void* data(const std::type_info& type) {
                if (typeid(NonVirtual)!=type) return NULL;
                return &(*obj);
        }

        // to_string_v

        /// convert address to a string that can be used to reconstruct the address
        virtual string to_string() const {
                return obj->to_string();
        }

        /// Assigns an address using a human-readable
        virtual bool assign(const std::string& text) {
                return obj->assign(text);
        }

        // comparable_v

        /// implements comparison operators
        virtual int compare_to(const self& rhs) const {
                const address_v* compare = dynamic_cast<const address_v*> (&rhs);
                return obj->compare_to(conv(compare));
        }

        // to_bytes_v

        /// returns true, if this address has a fixed size in bytes
        virtual bool is_bytes_size_static() const {
                return obj->is_bytes_size_static();
        }

        /// returns the number of bytes used for serialization of this address
        virtual size_t to_bytes_size() const {
                return obj->to_bytes_size();
        }

        /// converts this address to a binary representation
        virtual void to_bytes(uint8_t* bytes) const {
                obj->to_bytes(bytes);
        }

        /// Assigns an address using a bunch of bytes
        virtual bool assign(const uint8_t* bytes, size_t size) {
                return obj->assign(bytes, size);
        }

};


#endif /* ADDRESS_V_H_ */