You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
59 lines
1.7 KiB
59 lines
1.7 KiB
/*=============================================================================
|
|
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_VALUE_OF_05052005_1126)
|
|
#define FUSION_VALUE_OF_05052005_1126
|
|
|
|
#include <boost/fusion/support/config.hpp>
|
|
#include <boost/fusion/support/iterator_base.hpp>
|
|
#include <boost/fusion/support/tag_of.hpp>
|
|
|
|
namespace boost { namespace fusion
|
|
{
|
|
// Special tags:
|
|
struct iterator_facade_tag; // iterator facade tag
|
|
struct boost_array_iterator_tag; // boost::array iterator tag
|
|
struct mpl_iterator_tag; // mpl sequence iterator tag
|
|
struct std_pair_iterator_tag; // std::pair iterator tag
|
|
|
|
namespace extension
|
|
{
|
|
template <typename Tag>
|
|
struct value_of_impl
|
|
{
|
|
template <typename Iterator>
|
|
struct apply {};
|
|
};
|
|
|
|
template <>
|
|
struct value_of_impl<iterator_facade_tag>
|
|
{
|
|
template <typename Iterator>
|
|
struct apply : Iterator::template value_of<Iterator> {};
|
|
};
|
|
|
|
template <>
|
|
struct value_of_impl<boost_array_iterator_tag>;
|
|
|
|
template <>
|
|
struct value_of_impl<mpl_iterator_tag>;
|
|
|
|
template <>
|
|
struct value_of_impl<std_pair_iterator_tag>;
|
|
}
|
|
|
|
namespace result_of
|
|
{
|
|
template <typename Iterator>
|
|
struct value_of
|
|
: extension::value_of_impl<typename detail::tag_of<Iterator>::type>::
|
|
template apply<Iterator>
|
|
{};
|
|
}
|
|
}}
|
|
|
|
#endif
|