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/*=============================================================================
Copyright (c) 2003 Joel de Guzman
Copyright (c) 2004 Peder Holt
Use, modification and distribution is subject to the Boost Software
License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt)
==============================================================================*/
#if !defined(FUSION_ALGORITHM_FOLD_HPP)
#define FUSION_ALGORITHM_FOLD_HPP
#include <boost/spirit/fusion/algorithm/detail/fold.ipp>
namespace boost { namespace fusion
{
namespace meta
{
template <typename Sequence, typename State, typename F>
struct fold
{
typedef typename
detail::static_fold<
typename meta::begin<Sequence>::type
, typename meta::end<Sequence>::type
, State
, F
>::type
type;
};
}
namespace function
{
struct fold
{
template <typename Sequence, typename State, typename F>
struct apply : meta::fold<Sequence, State, F> {};
template <typename Sequence, typename State, typename F>
inline typename apply<Sequence const, State, F>::type
operator()(Sequence const& seq, State const& state, F const& f) const
{
return detail::fold(
fusion::begin(seq)
, fusion::end(seq)
, state
, f
, is_same<
BOOST_DEDUCED_TYPENAME meta::begin<Sequence const>::type
, BOOST_DEDUCED_TYPENAME meta::end<Sequence const>::type>()
);
}
template <typename Sequence, typename State, typename F>
inline typename apply<Sequence, State, F>::type
operator()(Sequence& seq, State const& state, F const& f) const
{
return detail::fold(
fusion::begin(seq)
, fusion::end(seq)
, state
, f
, is_same<
BOOST_DEDUCED_TYPENAME meta::begin<Sequence>::type
, BOOST_DEDUCED_TYPENAME meta::end<Sequence>::type>()
);
}
};
}
function::fold const fold = function::fold();
}}
#endif