/*
 * Copyright (c) 2007 INRIA
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
 */
#ifndef MAC64_ADDRESS_H
#define MAC64_ADDRESS_H

#include "ipv4-address.h"
#include "ipv6-address.h"

#include "ns3/attribute-helper.h"
#include "ns3/attribute.h"

#include <ostream>
#include <stdint.h>

namespace ns3
{

class Address;

/**
 * \ingroup address
 *
 * \brief an EUI-64 address
 *
 * This class can contain 64 bit IEEE addresses.
 *
 * \see attribute_Mac64Address
 */
class Mac64Address
{
  public:
    Mac64Address();
    /**
     * \param str a string representing the new Mac64Address
     *
     * The format of the string is "xx:xx:xx:xx:xx:xx"
     */
    Mac64Address(const char* str);

    /**
     * \param buffer address in network order
     *
     * Copy the input address to our internal buffer.
     */
    void CopyFrom(const uint8_t buffer[8]);
    /**
     * \param buffer address in network order
     *
     * Copy the internal address to the input buffer.
     */
    void CopyTo(uint8_t buffer[8]) const;
    /**
     * \returns a new Address instance
     *
     * Convert an instance of this class to a polymorphic Address instance.
     */
    operator Address() const;
    /**
     * \param address a polymorphic address
     * \returns a new Mac64Address from the polymorphic address
     *
     * This function performs a type check and asserts if the
     * type of the input address is not compatible with an
     * Mac64Address.
     */
    static Mac64Address ConvertFrom(const Address& address);
    /**
     * \param address address to test
     * \returns true if the address matches, false otherwise.
     */
    static bool IsMatchingType(const Address& address);
    /**
     * Allocate a new Mac64Address.
     * \returns newly allocated mac64Address
     */
    static Mac64Address Allocate();

    /**
     * Reset the Mac64Address allocation index.
     *
     * This function resets (to zero) the global integer
     * that is used for unique address allocation.
     * It is automatically called whenever
     * \code
     * SimulatorDestroy ();
     * \endcode
     * is called.  It may also be optionally called
     * by user code if there is a need to force a reset
     * of this allocation index.
     */
    static void ResetAllocationIndex();

  private:
    /**
     * \returns a new Address instance
     *
     * Convert an instance of this class to a polymorphic Address instance.
     */
    Address ConvertTo() const;

    /**
     * \brief Return the Type of address.
     * \return type of address
     */
    static uint8_t GetType();

    /**
     * \brief Equal to operator.
     *
     * \param a the first operand
     * \param b the first operand
     * \returns true if the operands are equal
     */
    friend bool operator==(const Mac64Address& a, const Mac64Address& b);

    /**
     * \brief Not equal to operator.
     *
     * \param a the first operand
     * \param b the first operand
     * \returns true if the operands are not equal
     */
    friend bool operator!=(const Mac64Address& a, const Mac64Address& b);

    /**
     * \brief Less than operator.
     *
     * \param a the first operand
     * \param b the first operand
     * \returns true if the operand a is less than operand b
     */
    friend bool operator<(const Mac64Address& a, const Mac64Address& b);

    /**
     * \brief Stream insertion operator.
     *
     * \param os the stream
     * \param address the address
     * \returns a reference to the stream
     */
    friend std::ostream& operator<<(std::ostream& os, const Mac64Address& address);

    /**
     * \brief Stream extraction operator.
     *
     * \param is the stream
     * \param address the address
     * \returns a reference to the stream
     */
    friend std::istream& operator>>(std::istream& is, Mac64Address& address);

    static uint64_t m_allocationIndex; //!< Address allocation index
    uint8_t m_address[8];              //!< address value
};

/**
 * \class ns3::Mac64AddressValue
 * \brief hold objects of type ns3::Mac64Address
 */

ATTRIBUTE_HELPER_HEADER(Mac64Address);

inline bool
operator==(const Mac64Address& a, const Mac64Address& b)
{
    return memcmp(a.m_address, b.m_address, 8) == 0;
}

inline bool
operator!=(const Mac64Address& a, const Mac64Address& b)
{
    return memcmp(a.m_address, b.m_address, 8) != 0;
}

inline bool
operator<(const Mac64Address& a, const Mac64Address& b)
{
    return memcmp(a.m_address, b.m_address, 8) < 0;
}

std::ostream& operator<<(std::ostream& os, const Mac64Address& address);
std::istream& operator>>(std::istream& is, Mac64Address& address);

} // namespace ns3

#endif /* MAC64_ADDRESS_H */
