//-----------------------------------------------------------------------------
// boost mpl/insert_range_impl.hpp header file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2000-02
// Aleksey Gurtovoy
//
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appears in all copies and
// that both the copyright notice and this permission notice appear in
// supporting documentation. No representations are made about the
// suitability of this software for any purpose. It is provided "as is"
// without express or implied warranty.
#ifndef BOOST_MPL_AUX_INSERT_RANGE_IMPL_HPP_INCLUDED
#define BOOST_MPL_AUX_INSERT_RANGE_IMPL_HPP_INCLUDED
#include "boost/mpl/iter_fold_backward.hpp"
#include "boost/mpl/fold_backward.hpp"
#include "boost/mpl/clear.hpp"
#include "boost/mpl/push_front.hpp"
#include "boost/mpl/identity.hpp"
#include "boost/mpl/apply_if.hpp"
#include "boost/mpl/aux_/void_spec.hpp"
#include "boost/mpl/aux_/iter_push_front.hpp"
#include "boost/mpl/aux_/traits_lambda_spec.hpp"
#include "boost/type_traits/same_traits.hpp"
namespace boost {
namespace mpl {
// default implementation; conrete sequences might override it by
// specializing either the |insert_range_traits| or the primary
// |insert_range| template
namespace aux {
template<
typename Pos
, typename Range
>
struct iter_range_inserter
{
template< typename Sequence, typename Iterator > struct apply
{
typedef typename aux::iter_push_front<
typename apply_if<
is_same<Pos,typename Iterator::next>
, fold_backward< Range, Sequence, push_front<_,_> >
, identity<Sequence>
>::type
, Iterator
>::type type;
};
};
} // namespace aux
template< typename Tag >
struct insert_range_traits
{
template<
typename Sequence
, typename Pos
, typename Range
>
struct algorithm
{
typedef typename iter_fold_backward<
Sequence
, typename clear<Sequence>::type
, aux::iter_range_inserter<Pos,Range>
>::type type;
};
};
BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(3,insert_range_traits)
} // namespace mpl
} // namespace boost
#endif // BOOST_MPL_AUX_INSERT_RANGE_IMPL_HPP_INCLUDED