williamr@2: 
williamr@2: #ifndef BOOST_MPL_SET_AUX_INSERT_IMPL_HPP_INCLUDED
williamr@2: #define BOOST_MPL_SET_AUX_INSERT_IMPL_HPP_INCLUDED
williamr@2: 
williamr@2: // Copyright Aleksey Gurtovoy 2003-2004
williamr@2: // Copyright David Abrahams 2003-2004
williamr@2: //
williamr@2: // Distributed under the Boost Software License, Version 1.0. 
williamr@2: // (See accompanying file LICENSE_1_0.txt or copy at 
williamr@2: // http://www.boost.org/LICENSE_1_0.txt)
williamr@2: //
williamr@2: // See http://www.boost.org/libs/mpl for documentation.
williamr@2: 
williamr@2: // $Source: /cvsroot/boost/boost/boost/mpl/set/aux_/insert_impl.hpp,v $
williamr@2: // $Date: 2004/09/05 09:42:59 $
williamr@2: // $Revision: 1.4 $
williamr@2: 
williamr@2: #include <boost/mpl/insert_fwd.hpp>
williamr@2: #include <boost/mpl/set/aux_/has_key_impl.hpp>
williamr@2: #include <boost/mpl/set/aux_/item.hpp>
williamr@2: #include <boost/mpl/set/aux_/tag.hpp>
williamr@2: #include <boost/mpl/identity.hpp>
williamr@2: #include <boost/mpl/base.hpp>
williamr@2: #include <boost/mpl/eval_if.hpp>
williamr@2: #include <boost/mpl/aux_/na.hpp>
williamr@2: 
williamr@2: #include <boost/type_traits/is_same.hpp>
williamr@2: 
williamr@2: namespace boost { namespace mpl {
williamr@2: 
williamr@2: namespace aux {
williamr@2: template<  typename Set, typename T > struct set_insert_impl
williamr@2:     : eval_if< 
williamr@2:           has_key_impl<aux::set_tag>::apply<Set,T>
williamr@2:         , identity<Set>
williamr@2:         , eval_if< 
williamr@2:               is_same< T,typename Set::last_masked_ > 
williamr@2:             , base<Set>
williamr@2:             , identity< s_item<T,Set> >
williamr@2:             >
williamr@2:         >
williamr@2: {
williamr@2: };
williamr@2: }
williamr@2: 
williamr@2: template<>
williamr@2: struct insert_impl< aux::set_tag >
williamr@2: {
williamr@2:     template< 
williamr@2:           typename Set
williamr@2:         , typename PosOrKey
williamr@2:         , typename KeyOrNA
williamr@2:         > 
williamr@2:     struct apply
williamr@2:         : aux::set_insert_impl<
williamr@2:               Set
williamr@2:             , typename if_na<KeyOrNA,PosOrKey>::type
williamr@2:             >
williamr@2:     {
williamr@2:     };
williamr@2: };
williamr@2: 
williamr@2: }}
williamr@2: 
williamr@2: #endif // BOOST_MPL_SET_AUX_INSERT_IMPL_HPP_INCLUDED