1 2 #ifndef BOOST_MPL_SET_AUX_INSERT_IMPL_HPP_INCLUDED 3 #define BOOST_MPL_SET_AUX_INSERT_IMPL_HPP_INCLUDED 4 5 // Copyright Aleksey Gurtovoy 2003-2007 6 // Copyright David Abrahams 2003-2004 7 // 8 // Distributed under the Boost Software License, Version 1.0. 9 // (See accompanying file LICENSE_1_0.txt or copy at 10 // http://www.boost.org/LICENSE_1_0.txt) 11 // 12 // See http://www.boost.org/libs/mpl for documentation. 13 14 // $Id$ 15 // $Date$ 16 // $Revision$ 17 18 #include <boost/mpl/insert_fwd.hpp> 19 #include <boost/mpl/set/aux_/has_key_impl.hpp> 20 #include <boost/mpl/set/aux_/item.hpp> 21 #include <boost/mpl/set/aux_/tag.hpp> 22 #include <boost/mpl/identity.hpp> 23 #include <boost/mpl/base.hpp> 24 #include <boost/mpl/eval_if.hpp> 25 #include <boost/mpl/aux_/na.hpp> 26 27 #include <boost/type_traits/is_same.hpp> 28 29 namespace boost { namespace mpl { 30 31 namespace aux { 32 template< typename Set, typename T > struct set_insert_impl 33 : eval_if< 34 has_key_impl<aux::set_tag>::apply<Set,T> 35 , identity<Set> 36 , eval_if< 37 is_same< T,typename Set::last_masked_ > 38 , base<Set> 39 , identity< s_item<T,typename Set::item_> > 40 > 41 > 42 { 43 }; 44 } 45 46 template<> 47 struct insert_impl< aux::set_tag > 48 { 49 template< 50 typename Set 51 , typename PosOrKey 52 , typename KeyOrNA 53 > 54 struct apply 55 : aux::set_insert_impl< 56 Set 57 , typename if_na<KeyOrNA,PosOrKey>::type 58 > 59 { 60 }; 61 }; 62 63 }} 64 65 #endif // BOOST_MPL_SET_AUX_INSERT_IMPL_HPP_INCLUDED 66