Chris@16: /* boost random/detail/ptr_helper.hpp header file
Chris@16:  *
Chris@16:  * Copyright Jens Maurer 2002
Chris@16:  * Distributed under the Boost Software License, Version 1.0. (See
Chris@16:  * accompanying file LICENSE_1_0.txt or copy at
Chris@16:  * http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  *
Chris@16:  * See http://www.boost.org for most recent version including documentation.
Chris@16:  *
Chris@101:  * $Id$
Chris@16:  *
Chris@16:  */
Chris@16: 
Chris@16: #ifndef BOOST_RANDOM_DETAIL_PTR_HELPER_HPP
Chris@16: #define BOOST_RANDOM_DETAIL_PTR_HELPER_HPP
Chris@16: 
Chris@16: #include <boost/config.hpp>
Chris@16: 
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace random {
Chris@16: namespace detail {
Chris@16: 
Chris@16: // type_traits could help here, but I don't want to depend on type_traits.
Chris@16: template<class T>
Chris@16: struct ptr_helper
Chris@16: {
Chris@16:   typedef T value_type;
Chris@16:   typedef T& reference_type;
Chris@16:   typedef const T& rvalue_type;
Chris@16:   static reference_type ref(T& r) { return r; }
Chris@16:   static const T& ref(const T& r) { return r; }
Chris@16: };
Chris@16: 
Chris@16: template<class T>
Chris@16: struct ptr_helper<T&>
Chris@16: {
Chris@16:   typedef T value_type;
Chris@16:   typedef T& reference_type;
Chris@16:   typedef T& rvalue_type;
Chris@16:   static reference_type ref(T& r) { return r; }
Chris@16:   static const T& ref(const T& r) { return r; }
Chris@16: };
Chris@16: 
Chris@16: template<class T>
Chris@16: struct ptr_helper<T*>
Chris@16: {
Chris@16:   typedef T value_type;
Chris@16:   typedef T& reference_type;
Chris@16:   typedef T* rvalue_type;
Chris@16:   static reference_type ref(T * p) { return *p; }
Chris@16:   static const T& ref(const T * p) { return *p; }
Chris@16: };
Chris@16: 
Chris@16: } // namespace detail
Chris@16: } // namespace random
Chris@16: } // namespace boost
Chris@16: 
Chris@16: //
Chris@16: // BOOST_RANDOM_PTR_HELPER_SPEC --
Chris@16: //
Chris@16: //  Helper macro for broken compilers defines specializations of
Chris@16: //  ptr_helper.
Chris@16: //
Chris@16: # define BOOST_RANDOM_PTR_HELPER_SPEC(T)
Chris@16: 
Chris@16: #endif // BOOST_RANDOM_DETAIL_PTR_HELPER_HPP