]>
Commit | Line | Data |
---|---|---|
7c673cae FG |
1 | #ifndef BOOST_SERIALIZATION_STRONG_TYPEDEF_HPP |
2 | #define BOOST_SERIALIZATION_STRONG_TYPEDEF_HPP | |
3 | ||
4 | // MS compatible compilers support #pragma once | |
5 | #if defined(_MSC_VER) | |
6 | # pragma once | |
7 | #endif | |
8 | ||
9 | /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 | |
10 | // strong_typedef.hpp: | |
11 | ||
12 | // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . | |
13 | // Use, modification and distribution is subject to the Boost Software | |
14 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
15 | // http://www.boost.org/LICENSE_1_0.txt) | |
16 | ||
17 | // See http://www.boost.org/libs/serialization for updates, documentation, and revision history. | |
18 | ||
19 | // macro used to implement a strong typedef. strong typedef | |
20 | // guarentees that two types are distinguised even though the | |
21 | // share the same underlying implementation. typedef does not create | |
22 | // a new type. BOOST_STRONG_TYPEDEF(T, D) creates a new type named D | |
23 | // that operates as a type T. | |
24 | ||
25 | #include <boost/config.hpp> | |
26 | #include <boost/operators.hpp> | |
27 | ||
28 | #define BOOST_STRONG_TYPEDEF(T, D) \ | |
29 | struct D \ | |
30 | : boost::totally_ordered1< D \ | |
31 | , boost::totally_ordered2< D, T \ | |
32 | > > \ | |
33 | { \ | |
34 | T t; \ | |
35 | explicit D(const T t_) : t(t_) {}; \ | |
36 | D(): t() {}; \ | |
37 | D(const D & t_) : t(t_.t){} \ | |
38 | D & operator=(const D & rhs) { t = rhs.t; return *this;} \ | |
39 | D & operator=(const T & rhs) { t = rhs; return *this;} \ | |
40 | operator const T & () const {return t; } \ | |
41 | operator T & () { return t; } \ | |
42 | bool operator==(const D & rhs) const { return t == rhs.t; } \ | |
43 | bool operator<(const D & rhs) const { return t < rhs.t; } \ | |
44 | }; | |
45 | ||
46 | #endif // BOOST_SERIALIZATION_STRONG_TYPEDEF_HPP |