Update of /cvsroot/boost/boost/boost/fusion/sequence/view/iterator_range/detail
In directory sc8-pr-cvs3.sourceforge.net:/tmp/cvs-serv14564/detail
Added Files:
at_impl.hpp value_at_impl.hpp
Log Message:
adds intrinsics to support the concept of the underlying sequence
--- NEW FILE: at_impl.hpp ---
/*=============================================================================
Copyright (c) 2007 Tobias Schwinger
Distributed under 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(BOOST_FUSION_ITERATOR_RANGE_AT_IMPL_HPP_INCLUDED)
#define BOOST_FUSION_ITERATOR_RANGE_AT_IMPL_HPP_INCLUDED
#include <boost/fusion/iterator/advance.hpp>
#include <boost/fusion/iterator/deref.hpp>
namespace boost { namespace fusion
{
struct iterator_range_tag;
namespace extension
{
template <typename Tag>
struct at_impl;
template <>
struct at_impl<iterator_range_tag>
{
template <typename Seq, typename N>
struct apply
{
typedef typename Seq::begin_type begin_type;
typedef typename result_of::advance<begin_type,N>::type pos;
typedef typename result_of::deref<pos>::type type;
static type
call(Seq& s)
{
return * advance<N>(s.first);
}
};
};
}
}}
#endif
--- NEW FILE: value_at_impl.hpp ---
/*=============================================================================
Copyright (c) 2007 Tobias Schwinger
Distributed under 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(BOOST_FUSION_ITERATOR_RANGE_VALUE_AT_IMPL_HPP_INCLUDED)
#define BOOST_FUSION_ITERATOR_RANGE_VALUE_AT_IMPL_HPP_INCLUDED
#include <boost/fusion/iterator/advance.hpp>
#include <boost/fusion/iterator/value_of.hpp>
namespace boost { namespace fusion
{
struct iterator_range_tag;
namespace extension
{
template <typename Tag>
struct value_at_impl;
template <>
struct value_at_impl<iterator_range_tag>
{
template <typename Seq, typename N>
struct apply
{
typedef typename Seq::begin_type begin_type;
typedef typename result_of::advance<begin_type,N>::type pos;
typedef typename result_of::value_of<pos>::type type;
};
};
}
}}
#endif
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