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branch for creating branch for fusion 2.1

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[SVN r40237]
This commit is contained in:
Joel de Guzman
2007-10-21 00:52:09 +00:00
parent 7a6e82b7cf
commit 32f1c58ce7
476 changed files with 25709 additions and 0 deletions
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63
include/boost/fusion/adapted/struct/detail/at_impl.hpp Normal file
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/*=============================================================================
Copyright (c) 2001-2006 Joel de Guzman
Copyright (c) 2005-2006 Dan Marsden
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_24122005_1807)
#define BOOST_FUSION_AT_IMPL_24122005_1807
#include <boost/fusion/support/detail/access.hpp>
#include <boost/mpl/assert.hpp>
#include <boost/mpl/int.hpp>
namespace boost { namespace fusion
{
struct struct_tag;
namespace extension
{
template<typename T>
struct at_impl;
template <typename Struct, int N>
struct struct_member;
template <typename Struct>
struct struct_size;
template <>
struct at_impl<struct_tag>
{
template <typename Sequence, typename N>
struct apply
{
static int const n_value = N::value;
BOOST_MPL_ASSERT_RELATION(
n_value, <=, extension::struct_size<Sequence>::value);
typedef typename
extension::struct_member<Sequence, N::value>
element;
typedef typename
mpl::eval_if<
is_const<Sequence>
, detail::cref_result<element>
, detail::ref_result<element>
>::type
type;
static type
call(Sequence& seq)
{
return extension::
struct_member<Sequence, N::value>::call(seq);
}
};
};
}
}}
#endif