| 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 | | #if !defined(__BORLANDC__) || __BORLANDC__ >= 0x590 |
| 29 | | #define BOOST_STRONG_TYPEDEF(T, D) \ |
| 30 | | struct D \ |
| 31 | | : boost::totally_ordered1< D \ |
| 32 | | , boost::totally_ordered2< D, T \ |
| 33 | | > > \ |
| 34 | | { \ |
| 35 | | T t; \ |
| 36 | | explicit D(const T t_) : t(t_) {}; \ |
| 37 | | D(){}; \ |
| 38 | | D(const D & t_) : t(t_.t){} \ |
| 39 | | D & operator=(const D & rhs) { t = rhs.t; return *this;} \ |
| 40 | | D & operator=(const T & rhs) { t = rhs; return *this;} \ |
| 41 | | operator const T & () const {return t; } \ |
| 42 | | operator T & () { return t; } \ |
| 43 | | bool operator==(const D & rhs) const { return t == rhs.t; } \ |
| 44 | | bool operator<(const D & rhs) const { return t < rhs.t; } \ |
| 45 | | }; |
| 46 | | #else |
| 47 | | #define BOOST_STRONG_TYPEDEF(T, D) \ |
| 48 | | struct D \ |
| 49 | | : boost::totally_ordered1< D \ |
| 50 | | , boost::totally_ordered2< D, T \ |
| 51 | | > > \ |
| 52 | | { \ |
| 53 | | T t; \ |
| 54 | | explicit D(const T t_) : t(t_) {}; \ |
| 55 | | D(){}; \ |
| 56 | | D(const D & t_) : t(t_.t){} \ |
| 57 | | D & operator=(const D & rhs) { t = rhs.t; return *this;} \ |
| 58 | | D & operator=(const T & rhs) { t = rhs; return *this;} \ |
| 59 | | /*operator const T & () const {return t; }*/ \ |
| 60 | | operator T & () { return t; } \ |
| 61 | | bool operator==(const D & rhs) const { return t == rhs.t; } \ |
| 62 | | bool operator<(const D & rhs) const { return t < rhs.t; } \ |
| 63 | | }; |
| 64 | | #endif // !defined(__BORLANDC) || __BORLANDC__ >= 0x590 |
| 65 | | |