ossrv_pub/boost_apis/boost/strong_typedef.hpp
changeset 0 e4d67989cc36
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ossrv_pub/boost_apis/boost/strong_typedef.hpp	Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,45 @@
+#ifndef BOOST_STRONG_TYPEDEF_HPP
+#define BOOST_STRONG_TYPEDEF_HPP
+
+// MS compatible compilers support #pragma once
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
+// strong_typedef.hpp:
+
+// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 
+// 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 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/operators.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_) : t(t_) {};                          \
+    D(){};                                                      \
+    D(const D & t_) : t(t_.t){}                                 \
+    D & operator=(const D & rhs) { t = rhs.t; return *this;}    \
+    D & operator=(const T & rhs) { 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_STRONG_TYPEDEF_HPP