text: /*
   *          Copyright Andrey Semashev 2007 - 2015.
   * 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)
   */
  /*!
   * \file   tagged_integer.hpp
   * \author Andrey Semashev
   * \date   11.01.2008
   *
   * \brief  This header is the Boost.Log library implementation, see the library documentation
   *         at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html.
   */
  
  #ifndef BOOST_LOG_TAGGED_INTEGER_HPP_INCLUDED_
  #define BOOST_LOG_TAGGED_INTEGER_HPP_INCLUDED_
  
  #include <boost/log/detail/config.hpp>
  #include <boost/log/detail/header.hpp>
  
  #ifdef BOOST_HAS_PRAGMA_ONCE
  #pragma once
  #endif
  
  namespace boost {
  
  BOOST_LOG_OPEN_NAMESPACE
  
  namespace aux {
  
  //! A tagged integer wrapper for type safety
  template< typename IntT, typename TagT >
  struct tagged_integer
  {
      //! Contained value type
      typedef IntT integer_type;
      //! Tag
      typedef TagT tag;
  
      //! Contained value
      integer_type value;
  
      //! Conversion operator
      BOOST_CONSTEXPR operator integer_type() const BOOST_NOEXCEPT { return value; }
  
      //  Increment
      tagged_integer& operator++ () BOOST_NOEXCEPT { ++value; return *this; }
      tagged_integer operator++ (int) BOOST_NOEXCEPT { tagged_integer temp = *this; ++value; return temp; }
      //  Decrement
      tagged_integer& operator-- () BOOST_NOEXCEPT { --value; return *this; }
      tagged_integer operator-- (int) BOOST_NOEXCEPT { tagged_integer temp = *this; --value; return temp; }
  
  #define BOOST_LOG_TAGGED_INTEGER_OP(op)\
      tagged_integer& operator op (tagged_integer const& that) BOOST_NOEXCEPT { value op that.value; return *this; }
  
      BOOST_LOG_TAGGED_INTEGER_OP(|=)
      BOOST_LOG_TAGGED_INTEGER_OP(&=)
      BOOST_LOG_TAGGED_INTEGER_OP(^=)
      BOOST_LOG_TAGGED_INTEGER_OP(+=)
      BOOST_LOG_TAGGED_INTEGER_OP(-=)
      BOOST_LOG_TAGGED_INTEGER_OP(*=)
      BOOST_LOG_TAGGED_INTEGER_OP(/=)
      BOOST_LOG_TAGGED_INTEGER_OP(%=)
  
  #undef BOOST_LOG_TAGGED_INTEGER_OP
  
      //! Inversion operator
      tagged_integer& operator~ () BOOST_NOEXCEPT { ~value; return *this; }
  
      //  Shift operators
      template< typename T >
      tagged_integer& operator<<= (T const& that) BOOST_NOEXCEPT { value <<= that; return *this; }
      template< typename T >
      tagged_integer& operator>>= (T const& that) BOOST_NOEXCEPT { value >>= that; return *this; }
  
  private:
      //  Protection against improper usage
      template< typename T1, typename T2 >
      tagged_integer& operator<<= (tagged_integer< T1, T2 > const&);
      template< typename T1, typename T2 >
      tagged_integer& operator>>= (tagged_integer< T1, T2 > const&);
  };
  
      //  Relational operators
  #define BOOST_LOG_TAGGED_INTEGER_OP(op)\
      template< typename IntT, typename TagT >\
      inline bool operator op (\
          tagged_integer< IntT, TagT > const& left, tagged_integer< IntT, TagT > const& right) BOOST_NOEXCEPT\
      {\
          return (left.value op right.value);\
      }
  
  BOOST_LOG_TAGGED_INTEGER_OP(==)
  BOOST_LOG_TAGGED_INTEGER_OP(!=)
  BOOST_LOG_TAGGED_INTEGER_OP(<)
  BOOST_LOG_TAGGED_INTEGER_OP(>)
  BOOST_LOG_TAGGED_INTEGER_OP(<=)
  BOOST_LOG_TAGGED_INTEGER_OP(>=)
  
  #undef BOOST_LOG_TAGGED_INTEGER_OP
  
  #define BOOST_LOG_TAGGED_INTEGER_OP(op)\
      template< typename IntT, typename TagT >\
      inline tagged_integer< IntT, TagT > operator op (\
          tagged_integer< IntT, TagT > const& left, tagged_integer< IntT, TagT > const& right) BOOST_NOEXCEPT\
      {\
          tagged_integer< IntT, TagT > temp = left;\
          temp op##= right;\
          return temp;\
      }
  
  BOOST_LOG_TAGGED_INTEGER_OP(|)
  BOOST_LOG_TAGGED_INTEGER_OP(&)
  BOOST_LOG_TAGGED_INTEGER_OP(^)
  BOOST_LOG_TAGGED_INTEGER_OP(+)
  BOOST_LOG_TAGGED_INTEGER_OP(-)
  BOOST_LOG_TAGGED_INTEGER_OP(*)
  BOOST_LOG_TAGGED_INTEGER_OP(/)
  BOOST_LOG_TAGGED_INTEGER_OP(%)
  
  #undef BOOST_LOG_TAGGED_INTEGER_OP
  
  #define BOOST_LOG_TAGGED_INTEGER_OP(op)\
      template< typename IntT, typename TagT, typename T >\
      inline tagged_integer< IntT, TagT > operator op (\
          tagged_integer< IntT, TagT > const& left, T const& right) BOOST_NOEXCEPT\
      {\
          tagged_integer< IntT, TagT > temp = left;\
          temp op##= right;\
          return temp;\
      }
  
  BOOST_LOG_TAGGED_INTEGER_OP(<<)
  BOOST_LOG_TAGGED_INTEGER_OP(>>)
  
  #undef BOOST_LOG_TAGGED_INTEGER_OP
  
  } // namespace aux
  
  BOOST_LOG_CLOSE_NAMESPACE // namespace log
  
  } // namespace boost
  
  #include <boost/log/detail/footer.hpp>
  
  #endif // BOOST_LOG_TAGGED_INTEGER_HPP_INCLUDED_
  