| #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 |