forked from boostorg/fusion
43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
|
/*=============================================================================
|
||
|
|
Copyright (c) 2001-2006 Joel de Guzman
|
||
|
|
|
||
|
|
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_PRIOR_05042005_1144)
|
||
|
|
#define FUSION_PRIOR_05042005_1144
|
||
|
|
|
||
|
|
#include <boost/fusion/support/tag_of.hpp>
|
||
|
|
|
||
|
|
namespace boost { namespace fusion
|
||
|
|
{
|
||
|
|
namespace extension
|
||
|
|
{
|
||
|
|
template <typename Tag>
|
||
|
|
struct prior_impl
|
||
|
|
{
|
||
|
|
template <typename Iterator>
|
||
|
|
struct apply {};
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace result_of
|
||
|
|
{
|
||
|
|
template <typename Iterator>
|
||
|
|
struct prior
|
||
|
|
: extension::prior_impl<typename detail::tag_of<Iterator>::type>::
|
||
|
|
template apply<Iterator>
|
||
|
|
{};
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename Iterator>
|
||
|
|
typename result_of::prior<Iterator>::type
|
||
|
|
prior(Iterator const& i)
|
||
|
|
{
|
||
|
|
return result_of::prior<Iterator>::call(i);
|
||
|
|
}
|
||
|
|
}}
|
||
|
|
|
||
|
|
#endif
|