williamr@2: //  tuple.hpp - Boost Tuple Library --------------------------------------
williamr@2: 
williamr@2: // Copyright (C) 1999, 2000 Jaakko Järvi (jaakko.jarvi@cs.utu.fi)
williamr@2: //
williamr@2: // Distributed under the Boost Software License, Version 1.0. (See
williamr@2: // accompanying file LICENSE_1_0.txt or copy at
williamr@2: // http://www.boost.org/LICENSE_1_0.txt)
williamr@2: 
williamr@2: // For more information, see http://www.boost.org
williamr@2: 
williamr@2: // ----------------------------------------------------------------- 
williamr@2: 
williamr@2: #ifndef BOOST_TUPLE_HPP
williamr@2: #define BOOST_TUPLE_HPP
williamr@2: 
williamr@2: #if defined(__sgi) && defined(_COMPILER_VERSION) && _COMPILER_VERSION <= 730
williamr@2: // Work around a compiler bug.
williamr@2: // boost::python::tuple has to be seen by the compiler before the
williamr@2: // boost::tuple class template.
williamr@2: namespace boost { namespace python { class tuple; }}
williamr@2: #endif
williamr@2: 
williamr@2: #include "boost/config.hpp"
williamr@2: #include "boost/static_assert.hpp"
williamr@2: 
williamr@2: #if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
williamr@2: // The MSVC version
williamr@2: #include "boost/tuple/detail/tuple_basic_no_partial_spec.hpp"
williamr@2: 
williamr@2: #else
williamr@2: // other compilers
williamr@2: #include "boost/ref.hpp"
williamr@2: #include "boost/tuple/detail/tuple_basic.hpp"
williamr@2: 
williamr@2: #endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
williamr@2: 
williamr@2: namespace boost {    
williamr@2: 
williamr@2: using tuples::tuple;
williamr@2: using tuples::make_tuple;
williamr@2: using tuples::tie;
williamr@2: #if !defined(BOOST_NO_USING_TEMPLATE)
williamr@2: using tuples::get;
williamr@2: #elif !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
williamr@2: //
williamr@2: // The "using tuples::get" statement causes the
williamr@2: // Borland compiler to ICE, use forwarding
williamr@2: // functions instead:
williamr@2: //
williamr@2: template<int N, class HT, class TT>
williamr@2: inline typename tuples::access_traits<
williamr@2:                   typename tuples::element<N, tuples::cons<HT, TT> >::type
williamr@2:                 >::non_const_type
williamr@2: get(tuples::cons<HT, TT>& c) {
williamr@2:   return tuples::get<N,HT,TT>(c);
williamr@2: } 
williamr@2: // get function for const cons-lists, returns a const reference to
williamr@2: // the element. If the element is a reference, returns the reference
williamr@2: // as such (that is, can return a non-const reference)
williamr@2: template<int N, class HT, class TT>
williamr@2: inline typename tuples::access_traits<
williamr@2:                   typename tuples::element<N, tuples::cons<HT, TT> >::type
williamr@2:                 >::const_type
williamr@2: get(const tuples::cons<HT, TT>& c) {
williamr@2:   return tuples::get<N,HT,TT>(c);
williamr@2: }
williamr@2: #else  // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
williamr@2: //
williamr@2: // MSVC, using declarations don't mix with templates well,
williamr@2: // so use forwarding functions instead:
williamr@2: //
williamr@2: template<int N, typename Head, typename Tail>
williamr@2: typename tuples::detail::element_ref<N, tuples::cons<Head, Tail> >::RET
williamr@2: get(tuples::cons<Head, Tail>& t, tuples::detail::workaround_holder<N>* = 0)
williamr@2: {
williamr@2:    return tuples::detail::get_class<N>::get(t);
williamr@2: }
williamr@2: 
williamr@2: template<int N, typename Head, typename Tail>
williamr@2: typename tuples::detail::element_const_ref<N, tuples::cons<Head, Tail> >::RET
williamr@2: get(const tuples::cons<Head, Tail>& t, tuples::detail::workaround_holder<N>* = 0)
williamr@2: {
williamr@2:    return tuples::detail::get_class<N>::get(t);
williamr@2: }
williamr@2: #endif // BOOST_NO_USING_TEMPLATE
williamr@2:    
williamr@2: } // end namespace boost
williamr@2: 
williamr@2: 
williamr@2: #endif // BOOST_TUPLE_HPP