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added struct wrapping facilities to make it very easy to make any struct a conforming fusion sequence

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[SVN r37328]
This commit is contained in:
Joel de Guzman committed 2007-04-02 03:31:13 +00:00
1 parent ddf9cb743a
commit 6002bc9bb4
13 files changed
+214 -172
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include/boost/fusion/sequence/adapted/struct/detail/at_impl.hpp
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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
include/boost/fusion/sequence/adapted/struct/detail/begin_impl.hpp
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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_BEGIN_IMPL_24122005_1752)
#define BOOST_FUSION_BEGIN_IMPL_24122005_1752
#include <boost/fusion/sequence/adapted/struct/struct_iterator.hpp>
namespace boost { namespace fusion
{
struct struct_tag;
namespace extension
{
template<typename T>
struct begin_impl;
template <>
struct begin_impl<struct_tag>
{
template <typename Sequence>
struct apply
{
typedef struct_iterator<Sequence, 0> type;
static type
call(Sequence& v)
{
return type(v);
}
};
};
}
}}
#endif
include/boost/fusion/sequence/adapted/struct/detail/category_of_impl.hpp
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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_CATEGORY_OF_IMPL_24122005_1731)
#define BOOST_FUSION_CATEGORY_OF_IMPL_24122005_1731
#include <utility>
namespace boost { namespace fusion
{
struct struct_tag;
struct random_access_traversal_tag;
namespace extension
{
template<typename T>
struct category_of_impl;
template<>
struct category_of_impl<struct_tag>
{
template<typename T>
struct apply
{
typedef random_access_traversal_tag type;
};
};
}
}}
#endif
include/boost/fusion/sequence/adapted/struct/detail/end_impl.hpp
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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_END_IMPL_24122005_1755)
#define BOOST_FUSION_END_IMPL_24122005_1755
#include <boost/fusion/sequence/adapted/struct/struct_iterator.hpp>
namespace boost { namespace fusion
{
struct struct_tag;
namespace extension
{
template <typename Tag>
struct end_impl;
template <>
struct end_impl<struct_tag>
{
template <typename Sequence>
struct apply
{
typedef struct_iterator<Sequence, 2> type;
static type
call(Sequence& v)
{
return type(v);
}
};
};
}
}}
#endif
include/boost/fusion/sequence/adapted/struct/detail/is_sequence_impl.hpp
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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_IS_SEQUENCE_IMPL_27122005_1651)
#define BOOST_FUSION_IS_SEQUENCE_IMPL_27122005_1651
#include <boost/mpl/bool.hpp>
namespace boost { namespace fusion
{
struct struct_tag;
namespace extension
{
template<typename Tag>
struct is_sequence_impl;
template<>
struct is_sequence_impl<struct_tag>
{
template<typename Sequence>
struct apply : mpl::true_ {};
};
}
}}
#endif
include/boost/fusion/sequence/adapted/struct/detail/is_view_impl.hpp
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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_IS_VIEW_IMPL_27042006_2219)
#define BOOST_FUSION_IS_VIEW_IMPL_27042006_2219
#include <boost/mpl/bool.hpp>
namespace boost { namespace fusion
{
struct struct_tag;
namespace extension
{
template<typename Tag>
struct is_view_impl;
template<>
struct is_view_impl<struct_tag>
{
template<typename T>
struct apply : mpl::false_
{};
};
}
}}
#endif
include/boost/fusion/sequence/adapted/struct/detail/size_impl.hpp
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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_SIZE_IMPL_24122005_1759)
#define BOOST_FUSION_SIZE_IMPL_24122005_1759
#include <boost/mpl/int.hpp>
namespace boost { namespace fusion
{
namespace extension
{
template <typename Struct>
struct struct_size;
}
struct struct_tag;
namespace extension
{
template<typename T>
struct size_impl;
template <>
struct size_impl<struct_tag>
{
template <typename Sequence>
struct apply : extension::struct_size<Sequence> {};
};
}
}}
#endif
include/boost/fusion/sequence/adapted/struct/detail/value_at_impl.hpp
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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_VALUE_AT_IMPL_24122005_1917)
#define BOOST_FUSION_VALUE_AT_IMPL_24122005_1917
#include <boost/mpl/if.hpp>
#include <boost/static_assert.hpp>
namespace boost { namespace fusion
{
struct struct_tag;
namespace extension
{
template<typename T>
struct value_at_impl;
template <typename Struct, int N>
struct struct_member;
template <typename Struct>
struct struct_size;
template <>
struct value_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>::type
type;
};
};
}
}}
#endif
include/boost/fusion/sequence/adapted/struct/struct_iterator.hpp
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/*=============================================================================
Copyright (c) 2001-2007 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(FUSION_STRUCT_ITERATOR_APRIL_2_2007_1008AM)
#define FUSION_STRUCT_ITERATOR_APRIL_2_2007_1008AM
#include <boost/fusion/iterator/iterator_facade.hpp>
#include <boost/type_traits/is_const.hpp>
#include <boost/type_traits/add_reference.hpp>
#include <boost/type_traits/add_const.hpp>
#include <boost/mpl/assert.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/mpl/if.hpp>
#include <boost/mpl/int.hpp>
#include <boost/mpl/minus.hpp>
#include <utility>
namespace boost { namespace fusion
{
namespace extension
{
template <typename Struct, int N>
struct struct_member;
template <typename Struct>
struct struct_size;
template <typename Struct, int N>
struct struct_member<Struct const, N>
{
typedef typename
add_const<typename struct_member<Struct, N>::type>::type
type;
static type&
call(Struct const& struct_)
{
return struct_member<Struct, N>::call(
const_cast<Struct&>(struct_));
}
};
template <typename Struct>
struct struct_size<Struct const>
: struct_size<Struct>
{};
}
struct random_access_traversal_tag;
template <typename Struct, int N_>
struct struct_iterator
: iterator_facade<struct_iterator<Struct, N_>, random_access_traversal_tag>
{
BOOST_MPL_ASSERT_RELATION(N_, >=, 0);
BOOST_MPL_ASSERT_RELATION(N_, <=, extension::struct_size<Struct>::value);
typedef mpl::int_<N_> index;
typedef Struct struct_type;
struct_iterator(Struct& struct_)
: struct_(struct_) {}
Struct& struct_;
template <typename Iterator>
struct value_of
: extension::struct_member<Struct, N_>
{
};
template <typename Iterator>
struct deref
{
typedef typename
add_reference<
typename extension::struct_member<Struct, N_>::type
>::type
type;
static type
call(Iterator const& iter)
{
return extension::struct_member<Struct, N_>::
call(iter.struct_);
}
};
template <typename Iterator, typename N>
struct advance
{
typedef typename Iterator::index index;
typedef typename Iterator::struct_type struct_type;
typedef struct_iterator<struct_type, index::value + N::value> type;
static type
call(Iterator const& iter)
{
return type(iter.struct_);
}
};
template <typename Iterator>
struct next : advance<Iterator, mpl::int_<1> > {};
template <typename Iterator>
struct prior : advance<Iterator, mpl::int_<-1> > {};
template <typename I1, typename I2>
struct distance : mpl::minus<typename I2::index, typename I1::index>
{
typedef typename
mpl::minus<
typename I2::index, typename I1::index
>::type
type;
static type
call(I1 const&, I2 const&)
{
return type();
}
};
};
}}
#endif