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#ifndef BOOST_SERIALIZATION_STRONG_TYPEDEF_HPP #define BOOST_SERIALIZATION_STRONG_TYPEDEF_HPP // MS compatible compilers support #pragma once #if defined(_MSC_VER) # pragma once #endif /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 // strong_typedef.hpp: // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . // (C) Copyright 2016 Ashish Sadanandan // Use, modification and distribution is subject to 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) // See http://www.boost.org/libs/serialization for updates, documentation, and revision history. // macro used to implement a strong typedef. strong typedef // guarentees that two types are distinguised even though the // share the same underlying implementation. typedef does not create // a new type. BOOST_STRONG_TYPEDEF(T, D) creates a new type named D // that operates as a type T. #include <boost/config.hpp> #include <boost/operators.hpp> #include <boost/type_traits/has_nothrow_assign.hpp> #include <boost/type_traits/has_nothrow_constructor.hpp> #include <boost/type_traits/has_nothrow_copy.hpp> #define BOOST_STRONG_TYPEDEF(T, D) \ struct D \ : boost::totally_ordered1< D \ , boost::totally_ordered2< D, T \ > > \ { \ T t; \ explicit D(const T& t_) BOOST_NOEXCEPT_IF(boost::has_nothrow_copy_constructor<T>::value) : t(t_) {} \ D() BOOST_NOEXCEPT_IF(boost::has_nothrow_default_constructor<T>::value) : t() {} \ D(const D & t_) BOOST_NOEXCEPT_IF(boost::has_nothrow_copy_constructor<T>::value) : t(t_.t) {} \ D& operator=(const D& rhs) BOOST_NOEXCEPT_IF(boost::has_nothrow_assign<T>::value) {t = rhs.t; return *this;} \ D& operator=(const T& rhs) BOOST_NOEXCEPT_IF(boost::has_nothrow_assign<T>::value) {t = rhs; return *this;} \ operator const T&() const {return t;} \ operator T&() {return t;} \ bool operator==(const D& rhs) const {return t == rhs.t;} \ bool operator<(const D& rhs) const {return t < rhs.t;} \ }; #endif // BOOST_SERIALIZATION_STRONG_TYPEDEF_HPP