Added boost header

This commit is contained in:
Christophe Riccio
2012-01-08 01:26:07 +00:00
parent 9c3faaca40
commit c7d752cdf8
8946 changed files with 1732316 additions and 0 deletions

View File

@@ -0,0 +1,102 @@
/*=============================================================================
Copyright (c) 2001-2011 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_ADVANCE_09172005_1149)
#define FUSION_ADVANCE_09172005_1149
#include <boost/mpl/int.hpp>
#include <boost/mpl/if.hpp>
#include <boost/mpl/eval_if.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/fusion/iterator/next.hpp>
#include <boost/fusion/iterator/prior.hpp>
namespace boost { namespace fusion { namespace advance_detail
{
// Default advance implementation, perform next(i)
// or prior(i) N times.
template <typename Iterator, int N>
struct forward;
template <typename Iterator, int N>
struct next_forward
{
typedef typename
forward<
typename result_of::next<Iterator>::type
, N-1
>::type
type;
};
template <typename Iterator, int N>
struct forward
{
typedef typename
mpl::eval_if_c<
(N == 0)
, mpl::identity<Iterator>
, next_forward<Iterator, N>
>::type
type;
static type const&
call(type const& i)
{
return i;
}
template <typename I>
static type
call(I const& i)
{
return call(fusion::next(i));
}
};
template <typename Iterator, int N>
struct backward;
template <typename Iterator, int N>
struct next_backward
{
typedef typename
backward<
typename result_of::prior<Iterator>::type
, N+1
>::type
type;
};
template <typename Iterator, int N>
struct backward
{
typedef typename
mpl::eval_if_c<
(N == 0)
, mpl::identity<Iterator>
, next_backward<Iterator, N>
>::type
type;
static type const&
call(type const& i)
{
return i;
}
template <typename I>
static type
call(I const& i)
{
return call(fusion::prior(i));
}
};
}}}
#endif