Chris@16: // Boost.Units - A C++ library for zero-overhead dimensional analysis and 
Chris@16: // unit/quantity manipulation and conversion
Chris@16: //
Chris@16: // Copyright (C) 2003-2008 Matthias Christian Schabel
Chris@16: // Copyright (C) 2008 Steven Watanabe
Chris@16: //
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: #ifndef BOOST_UNITS_MAKE_SYSTEM_HPP
Chris@16: #define BOOST_UNITS_MAKE_SYSTEM_HPP
Chris@16: 
Chris@16: /// \file
Chris@16: /// \brief Metafunction returning a homogeneous system that can
Chris@16: ///    represent any combination of the base units.
Chris@16: /// \details
Chris@16: /// Metafunction make_system returning a homogeneous system that can
Chris@16: /// represent any combination of the base units.  There must
Chris@16: /// be no way to represent any of the base units in terms
Chris@16: /// of the others.  make_system<foot_base_unit, meter_base_unit>::type
Chris@16: /// is not allowed, for example.
Chris@16: 
Chris@16: #include <boost/units/config.hpp>
Chris@16: #include <boost/units/dimensionless_type.hpp>
Chris@16: #include <boost/units/homogeneous_system.hpp>
Chris@16: #include <boost/units/detail/dimension_list.hpp>
Chris@16: #include <boost/units/detail/sort.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: 
Chris@16: namespace units {
Chris@16: 
Chris@16: #ifdef BOOST_UNITS_DOXYGEN
Chris@16: 
Chris@16: namespace detail {
Chris@16: 
Chris@16: struct unspecified {};
Chris@16: 
Chris@16: }
Chris@16: 
Chris@16: /// Metafunction returning a homogeneous system that can
Chris@16: /// represent any combination of the base units.  There must
Chris@16: /// be no way to represent any of the base units in terms
Chris@16: /// of the others.  make_system<foot_base_unit, meter_base_unit>::type
Chris@16: /// is not allowed, for example.
Chris@16: template<class BaseUnit0, class BaseUnit1, class BaseUnit2, ..., class BaseUnitN>
Chris@16: struct make_system
Chris@16: {
Chris@16:     typedef homogeneous_system<detail::unspecified> type;
Chris@16: };
Chris@16: 
Chris@16: #else
Chris@16: 
Chris@16: struct na {};
Chris@16: 
Chris@16: template<
Chris@16:     class U0 = na,
Chris@16:     class U1 = na,
Chris@16:     class U2 = na,
Chris@16:     class U3 = na,
Chris@16:     class U4 = na,
Chris@16:     class U5 = na,
Chris@16:     class U6 = na,
Chris@16:     class U7 = na,
Chris@16:     class U8 = na,
Chris@16:     class U9 = na
Chris@16: >
Chris@16: struct make_system;
Chris@16: 
Chris@16: template<>
Chris@16: struct make_system<>
Chris@16: {
Chris@16:     typedef homogeneous_system<dimensionless_type> type;
Chris@16: };
Chris@16: 
Chris@16: // Codewarrior 9.2 doesn't like using the defaults.  Need
Chris@16: // to specify na explicitly.
Chris@16: template<class T0>
Chris@16: struct make_system<T0, na, na, na, na, na, na, na, na, na>
Chris@16: {
Chris@16:     typedef homogeneous_system<list<T0, dimensionless_type> > type;
Chris@16: };
Chris@16: 
Chris@16: template<class T0, class T1>
Chris@16: struct make_system<T0, T1, na, na, na, na, na, na, na, na>
Chris@16: {
Chris@16:     typedef homogeneous_system<typename detail::insertion_sort<list<T0, list<T1, dimensionless_type> > >::type> type;
Chris@16: };
Chris@16: 
Chris@16: template<class T0, class T1, class T2>
Chris@16: struct make_system<T0, T1, T2, na, na, na, na, na, na, na>
Chris@16: {
Chris@16:     typedef homogeneous_system<typename detail::insertion_sort<list<T0, list<T1, list<T2, dimensionless_type> > > >::type> type;
Chris@16: };
Chris@16: 
Chris@16: template<class T0, class T1, class T2, class T3>
Chris@16: struct make_system<T0, T1, T2, T3, na, na, na, na, na, na>
Chris@16: {
Chris@16:     typedef homogeneous_system<typename detail::insertion_sort<list<T0, list<T1, list<T2, list<T3, dimensionless_type> > > > >::type> type;
Chris@16: };
Chris@16: 
Chris@16: template<class T0, class T1, class T2, class T3, class T4>
Chris@16: struct make_system<T0, T1, T2, T3, T4, na, na, na, na, na>
Chris@16: {
Chris@16:     typedef homogeneous_system<typename detail::insertion_sort<list<T0, list<T1, list<T2, list<T3, list<T4, dimensionless_type> > > > > >::type> type;
Chris@16: };
Chris@16: 
Chris@16: template<class T0, class T1, class T2, class T3, class T4, class T5>
Chris@16: struct make_system<T0, T1, T2, T3, T4, T5, na, na, na, na>
Chris@16: {
Chris@16:     typedef homogeneous_system<typename detail::insertion_sort<list<T0, list<T1, list<T2, list<T3, list<T4, list<T5, dimensionless_type> > > > > > >::type> type;
Chris@16: };
Chris@16: 
Chris@16: template<class T0, class T1, class T2, class T3, class T4, class T5, class T6>
Chris@16: struct make_system<T0, T1, T2, T3, T4, T5, T6, na, na, na>
Chris@16: {
Chris@16:     typedef homogeneous_system<typename detail::insertion_sort<list<T0, list<T1, list<T2, list<T3, list<T4, list<T5, list<T6, dimensionless_type> > > > > > > >::type> type;
Chris@16: };
Chris@16: 
Chris@16: template<class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7>
Chris@16: struct make_system<T0, T1, T2, T3, T4, T5, T6, T7, na, na>
Chris@16: {
Chris@16:     typedef homogeneous_system<typename detail::insertion_sort<list<T0, list<T1, list<T2, list<T3, list<T4, list<T5, list<T6, list<T7, dimensionless_type> > > > > > > > >::type> type;
Chris@16: };
Chris@16: 
Chris@16: template<class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8>
Chris@16: struct make_system<T0, T1, T2, T3, T4, T5, T6, T7, T8, na>
Chris@16: {
Chris@16:     typedef homogeneous_system<typename detail::insertion_sort<list<T0, list<T1, list<T2, list<T3, list<T4, list<T5, list<T6, list<T7, list<T8, dimensionless_type> > > > > > > > > >::type> type;
Chris@16: };
Chris@16: 
Chris@16: template<class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9>
Chris@16: struct make_system
Chris@16: {
Chris@16:     typedef homogeneous_system<typename detail::insertion_sort<list<T0, list<T1, list<T2, list<T3, list<T4, list<T5, list<T6, list<T7, list<T8, list<T9, dimensionless_type> > > > > > > > > > >::type> type;
Chris@16: };
Chris@16: 
Chris@16: #endif
Chris@16: 
Chris@16: } // namespace units
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif