feedc0de/boost_fusion
1
0
Fork 0
forked from boostorg/fusion
Code Pull Requests Activity

adapt template classes/structs

Browse Source 
[SVN r59846]
This commit is contained in:
Christopher Schmidt
2010-02-22 22:55:54 +00:00
parent bb88841f47
commit f84bc30bd3
79 changed files with 2489 additions and 2293 deletions
Download Patch File Download Diff File Expand all files Collapse all files

95
include/boost/fusion/adapted/class/detail/at_impl.hpp
View File

@ -1,70 +1,55 @@
/*=============================================================================
Copyright (c) 2001-2009 Joel de Guzman
Copyright (c) 2005-2006 Dan Marsden
Copyright (c) 2010 Christopher Schmidt
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(BOOST_FUSION_AT_IMPL_OCTOBER_4_2009_920PM)
#define BOOST_FUSION_AT_IMPL_OCTOBER_4_2009_920PM
#include <boost/fusion/support/detail/access.hpp>
#include <boost/mpl/assert.hpp>
#include <boost/mpl/int.hpp>
#ifndef BOOST_FUSION_ADAPTED_DETAIL_CLASS_AT_IMPL_HPP
#define BOOST_FUSION_ADAPTED_DETAIL_CLASS_AT_IMPL_HPP
namespace boost { namespace fusion
#include <boost/mpl/if.hpp>
#include <boost/type_traits/is_const.hpp>
#include <boost/type_traits/remove_const.hpp>
namespace boost { namespace fusion { namespace extension
{
struct class_tag;
template<typename>
struct at_impl;
namespace extension
template <>
struct at_impl<class_tag>
{
template<typename T>
struct at_impl;
template <typename Class, int N>
struct class_member;
template <typename Class>
struct class_size;
template <>
struct at_impl<class_tag>
template<typename Seq, typename N>
struct apply
{
template <typename Sequence, typename N>
struct apply
typedef
extension::struct_member<
typename remove_const<Seq>::type
, N::value
>
member;
typedef typename
mpl::if_<
is_const<Seq>
, typename member::get_type
, typename member::proxy
>::type
type;
static type
call(Seq& seq)
{
static int const n_value = N::value;
BOOST_MPL_ASSERT_RELATION(
n_value, <=, extension::class_size<Sequence>::value);
typedef typename
extension::class_member<Sequence, N::value>
element;
typedef typename
mpl::if_<
is_const<Sequence>
, typename class_member<Sequence, N::value>::get_type
, typename class_member<Sequence, N::value>::proxy
>::type
type;
static type
call(Sequence& seq)
{
return extension::
class_member<Sequence, N::value>::call(seq);
}
//~ static typename class_member<Sequence, N::value>::get_type
//~ call(Sequence const& seq)
//~ {
//~ return extension::
//~ class_member<Sequence, N::value>::call(seq);
//~ }
};
return member::call(seq);
}
};
}
}}
};
template <>
struct at_impl<assoc_class_tag>
: at_impl<class_tag>
{};
}}}
#endif