/*============================================================================= | |
Copyright (c) 2001-2006 Joel de Guzman | |
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(FUSION_PRIOR_IMPL_05042005_1145) | |
#define FUSION_PRIOR_IMPL_05042005_1145 | |
#include <boost/fusion/container/vector/vector_iterator.hpp> | |
namespace boost { namespace fusion | |
{ | |
struct vector_iterator_tag; | |
template <typename Vector, int N> | |
struct vector_iterator; | |
namespace extension | |
{ | |
template <typename Tag> | |
struct prior_impl; | |
template <> | |
struct prior_impl<vector_iterator_tag> | |
{ | |
template <typename Iterator> | |
struct apply | |
{ | |
typedef typename Iterator::vector vector; | |
typedef typename Iterator::index index; | |
typedef vector_iterator<vector, index::value-1> type; | |
static type | |
call(Iterator const& i) | |
{ | |
return type(i.vec); | |
} | |
}; | |
}; | |
} | |
}} | |
#endif |