65 lines
2.2 KiB
Plaintext
65 lines
2.2 KiB
Plaintext
/*=============================================================================
|
|
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_IMPL_07162005_1030)
|
|
#define FUSION_VALUE_OF_IMPL_07162005_1030
|
|
|
|
#include <boost/fusion/support/config.hpp>
|
|
#include <boost/mpl/apply.hpp>
|
|
#include <boost/fusion/iterator/value_of.hpp>
|
|
#include <boost/fusion/view/transform_view/detail/apply_transform_result.hpp>
|
|
|
|
namespace boost { namespace fusion
|
|
{
|
|
struct transform_view_iterator_tag;
|
|
struct transform_view_iterator2_tag;
|
|
|
|
namespace extension
|
|
{
|
|
template <typename Tag>
|
|
struct value_of_impl;
|
|
|
|
// Unary Version
|
|
template <>
|
|
struct value_of_impl<transform_view_iterator_tag>
|
|
{
|
|
template <typename Iterator>
|
|
struct apply
|
|
{
|
|
typedef typename
|
|
result_of::value_of<typename Iterator::first_type>::type
|
|
value_type;
|
|
|
|
typedef detail::apply_transform_result<typename Iterator::transform_type> transform_type;
|
|
typedef typename mpl::apply<transform_type, value_type>::type type;
|
|
};
|
|
};
|
|
|
|
// Binary Version
|
|
template <>
|
|
struct value_of_impl<transform_view_iterator2_tag>
|
|
{
|
|
template <typename Iterator>
|
|
struct apply
|
|
{
|
|
typedef typename
|
|
result_of::value_of<typename Iterator::first1_type>::type
|
|
value1_type;
|
|
typedef typename
|
|
result_of::value_of<typename Iterator::first2_type>::type
|
|
value2_type;
|
|
|
|
typedef detail::apply_transform_result<typename Iterator::transform_type> transform_type;
|
|
typedef typename mpl::apply<transform_type, value1_type, value2_type>::type type;
|
|
};
|
|
};
|
|
}
|
|
}}
|
|
|
|
#endif
|
|
|
|
|