// Boost.Units - A C++ library for zero-overhead dimensional analysis and | |
// unit/quantity manipulation and conversion | |
// | |
// Copyright (C) 2003-2008 Matthias Christian Schabel | |
// Copyright (C) 2008 Steven Watanabe | |
// | |
// Distributed under 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) | |
#ifndef BOOST_UNITS_DIMENSION_LIST_HPP | |
#define BOOST_UNITS_DIMENSION_LIST_HPP | |
#include <boost/mpl/next.hpp> | |
#include <boost/mpl/deref.hpp> | |
#include <boost/mpl/push_front_fwd.hpp> | |
#include <boost/mpl/pop_front_fwd.hpp> | |
#include <boost/mpl/size_fwd.hpp> | |
#include <boost/mpl/begin_end_fwd.hpp> | |
#include <boost/mpl/front_fwd.hpp> | |
#include <boost/units/config.hpp> | |
namespace boost { | |
namespace units { | |
struct dimensionless_type; | |
namespace detail { | |
struct dimension_list_tag { }; | |
} // namespace detail | |
template<class Item, class Next> | |
struct list | |
{ | |
typedef detail::dimension_list_tag tag; | |
typedef list type; | |
typedef Item item; | |
typedef Next next; | |
typedef typename mpl::next<typename Next::size>::type size; | |
}; | |
} // namespace units | |
namespace mpl { | |
// INTERNAL ONLY | |
template<> | |
struct size_impl<units::detail::dimension_list_tag> | |
{ | |
template<class L> struct apply : public L::size { }; | |
}; | |
// INTERNAL ONLY | |
template<> | |
struct begin_impl<units::detail::dimension_list_tag> | |
{ | |
template<class L> | |
struct apply | |
{ | |
typedef L type; | |
}; | |
}; | |
// INTERNAL ONLY | |
template<> | |
struct end_impl<units::detail::dimension_list_tag> | |
{ | |
template<class L> | |
struct apply | |
{ | |
typedef units::dimensionless_type type; | |
}; | |
}; | |
// INTERNAL ONLY | |
template<> | |
struct push_front_impl<units::detail::dimension_list_tag> | |
{ | |
template<class L, class T> | |
struct apply | |
{ | |
typedef units::list<T, L> type; | |
}; | |
}; | |
// INTERNAL ONLY | |
template<> | |
struct pop_front_impl<units::detail::dimension_list_tag> | |
{ | |
template<class L> | |
struct apply | |
{ | |
typedef typename L::next type; | |
}; | |
}; | |
// INTERNAL ONLY | |
template<> | |
struct front_impl<units::detail::dimension_list_tag> | |
{ | |
template<class L> | |
struct apply | |
{ | |
typedef typename L::item type; | |
}; | |
}; | |
// INTERNAL ONLY | |
template<class Item, class Next> | |
struct deref<units::list<Item, Next> > | |
{ | |
typedef Item type; | |
}; | |
} // namespace mpl | |
} // namespace boost | |
#if BOOST_UNITS_HAS_BOOST_TYPEOF | |
#include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP() | |
BOOST_TYPEOF_REGISTER_TEMPLATE(boost::units::list, 2) | |
#endif | |
#include <boost/units/dimensionless_type.hpp> | |
#endif // BOOST_UNITS_DIMENSION_LIST_HPP |