text: //
  // ip/impl/address.ipp
  // ~~~~~~~~~~~~~~~~~~~
  //
  // Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com)
  //
  // Distributed under the Boost Software License, Version 1.0. (See accompanying
  // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  //
  
  #ifndef BOOST_ASIO_IP_IMPL_ADDRESS_IPP
  #define BOOST_ASIO_IP_IMPL_ADDRESS_IPP
  
  #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  # pragma once
  #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  
  #include <boost/asio/detail/config.hpp>
  #include <typeinfo>
  #include <boost/asio/detail/throw_error.hpp>
  #include <boost/asio/detail/throw_exception.hpp>
  #include <boost/asio/error.hpp>
  #include <boost/asio/ip/address.hpp>
  #include <boost/asio/ip/bad_address_cast.hpp>
  #include <boost/system/system_error.hpp>
  
  #include <boost/asio/detail/push_options.hpp>
  
  namespace boost {
  namespace asio {
  namespace ip {
  
  address::address() BOOST_ASIO_NOEXCEPT
    : type_(ipv4),
      ipv4_address_(),
      ipv6_address_()
  {
  }
  
  address::address(
      const boost::asio::ip::address_v4& ipv4_address) BOOST_ASIO_NOEXCEPT
    : type_(ipv4),
      ipv4_address_(ipv4_address),
      ipv6_address_()
  {
  }
  
  address::address(
      const boost::asio::ip::address_v6& ipv6_address) BOOST_ASIO_NOEXCEPT
    : type_(ipv6),
      ipv4_address_(),
      ipv6_address_(ipv6_address)
  {
  }
  
  address::address(const address& other) BOOST_ASIO_NOEXCEPT
    : type_(other.type_),
      ipv4_address_(other.ipv4_address_),
      ipv6_address_(other.ipv6_address_)
  {
  }
  
  #if defined(BOOST_ASIO_HAS_MOVE)
  address::address(address&& other) BOOST_ASIO_NOEXCEPT
    : type_(other.type_),
      ipv4_address_(other.ipv4_address_),
      ipv6_address_(other.ipv6_address_)
  {
  }
  #endif // defined(BOOST_ASIO_HAS_MOVE)
  
  address& address::operator=(const address& other) BOOST_ASIO_NOEXCEPT
  {
    type_ = other.type_;
    ipv4_address_ = other.ipv4_address_;
    ipv6_address_ = other.ipv6_address_;
    return *this;
  }
  
  #if defined(BOOST_ASIO_HAS_MOVE)
  address& address::operator=(address&& other) BOOST_ASIO_NOEXCEPT
  {
    type_ = other.type_;
    ipv4_address_ = other.ipv4_address_;
    ipv6_address_ = other.ipv6_address_;
    return *this;
  }
  #endif // defined(BOOST_ASIO_HAS_MOVE)
  
  address& address::operator=(
      const boost::asio::ip::address_v4& ipv4_address) BOOST_ASIO_NOEXCEPT
  {
    type_ = ipv4;
    ipv4_address_ = ipv4_address;
    ipv6_address_ = boost::asio::ip::address_v6();
    return *this;
  }
  
  address& address::operator=(
      const boost::asio::ip::address_v6& ipv6_address) BOOST_ASIO_NOEXCEPT
  {
    type_ = ipv6;
    ipv4_address_ = boost::asio::ip::address_v4();
    ipv6_address_ = ipv6_address;
    return *this;
  }
  
  address make_address(const char* str)
  {
    boost::system::error_code ec;
    address addr = make_address(str, ec);
    boost::asio::detail::throw_error(ec);
    return addr;
  }
  
  address make_address(const char* str,
      boost::system::error_code& ec) BOOST_ASIO_NOEXCEPT
  {
    boost::asio::ip::address_v6 ipv6_address =
      boost::asio::ip::make_address_v6(str, ec);
    if (!ec)
      return address(ipv6_address);
  
    boost::asio::ip::address_v4 ipv4_address =
      boost::asio::ip::make_address_v4(str, ec);
    if (!ec)
      return address(ipv4_address);
  
    return address();
  }
  
  address make_address(const std::string& str)
  {
    return make_address(str.c_str());
  }
  
  address make_address(const std::string& str,
      boost::system::error_code& ec) BOOST_ASIO_NOEXCEPT
  {
    return make_address(str.c_str(), ec);
  }
  
  #if defined(BOOST_ASIO_HAS_STRING_VIEW)
  
  address make_address(string_view str)
  {
    return make_address(static_cast<std::string>(str));
  }
  
  address make_address(string_view str,
      boost::system::error_code& ec) BOOST_ASIO_NOEXCEPT
  {
    return make_address(static_cast<std::string>(str), ec);
  }
  
  #endif // defined(BOOST_ASIO_HAS_STRING_VIEW)
  
  boost::asio::ip::address_v4 address::to_v4() const
  {
    if (type_ != ipv4)
    {
      bad_address_cast ex;
      boost::asio::detail::throw_exception(ex);
    }
    return ipv4_address_;
  }
  
  boost::asio::ip::address_v6 address::to_v6() const
  {
    if (type_ != ipv6)
    {
      bad_address_cast ex;
      boost::asio::detail::throw_exception(ex);
    }
    return ipv6_address_;
  }
  
  std::string address::to_string() const
  {
    if (type_ == ipv6)
      return ipv6_address_.to_string();
    return ipv4_address_.to_string();
  }
  
  #if !defined(BOOST_ASIO_NO_DEPRECATED)
  std::string address::to_string(boost::system::error_code& ec) const
  {
    if (type_ == ipv6)
      return ipv6_address_.to_string(ec);
    return ipv4_address_.to_string(ec);
  }
  #endif // !defined(BOOST_ASIO_NO_DEPRECATED)
  
  bool address::is_loopback() const BOOST_ASIO_NOEXCEPT
  {
    return (type_ == ipv4)
      ? ipv4_address_.is_loopback()
      : ipv6_address_.is_loopback();
  }
  
  bool address::is_unspecified() const BOOST_ASIO_NOEXCEPT
  {
    return (type_ == ipv4)
      ? ipv4_address_.is_unspecified()
      : ipv6_address_.is_unspecified();
  }
  
  bool address::is_multicast() const BOOST_ASIO_NOEXCEPT
  {
    return (type_ == ipv4)
      ? ipv4_address_.is_multicast()
      : ipv6_address_.is_multicast();
  }
  
  bool operator==(const address& a1, const address& a2) BOOST_ASIO_NOEXCEPT
  {
    if (a1.type_ != a2.type_)
      return false;
    if (a1.type_ == address::ipv6)
      return a1.ipv6_address_ == a2.ipv6_address_;
    return a1.ipv4_address_ == a2.ipv4_address_;
  }
  
  bool operator<(const address& a1, const address& a2) BOOST_ASIO_NOEXCEPT
  {
    if (a1.type_ < a2.type_)
      return true;
    if (a1.type_ > a2.type_)
      return false;
    if (a1.type_ == address::ipv6)
      return a1.ipv6_address_ < a2.ipv6_address_;
    return a1.ipv4_address_ < a2.ipv4_address_;
  }
  
  } // namespace ip
  } // namespace asio
  } // namespace boost
  
  #include <boost/asio/detail/pop_options.hpp>
  
  #endif // BOOST_ASIO_IP_IMPL_ADDRESS_IPP
  