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mpl::sequence_tag specialization for adapted types

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[SVN r58396]
This commit is contained in:
Christopher Schmidt
2009-12-15 13:30:02 +00:00
parent 2587757d47
commit f0cd405f04
16 changed files with 363 additions and 110 deletions
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87
include/boost/fusion/adapted/struct/extension.hpp
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@ -10,58 +10,63 @@
#include <boost/type_traits/add_const.hpp>
namespace boost { namespace fusion { namespace extension
namespace boost { namespace fusion
{
template <typename Struct, int N>
struct struct_member;
struct fusion_sequence_tag;
template <typename Struct>
struct struct_size;
template <typename Struct, int N>
struct struct_member<Struct const, N>
namespace extension
{
typedef typename
add_const<typename struct_member<Struct, N>::type>::type
type;
template <typename Struct, int N>
struct struct_member;
static type&
call(Struct const& struct_)
template <typename Struct>
struct struct_size;
template <typename Struct, int N>
struct struct_member<Struct const, N>
{
return struct_member<Struct, N>::call(
const_cast<Struct&>(struct_));
}
};
typedef typename
add_const<typename struct_member<Struct, N>::type>::type
type;
template <typename Struct>
struct struct_size<Struct const>
: struct_size<Struct>
{};
static type&
call(Struct const& struct_)
{
return struct_member<Struct, N>::call(
const_cast<Struct&>(struct_));
}
};
struct no_such_member;
template <typename Struct>
struct struct_size<Struct const>
: struct_size<Struct>
{};
template<typename Struct, typename Key>
struct struct_assoc_member
{
typedef no_such_member type;
};
struct no_such_member;
template<typename Struct, typename Key>
struct struct_assoc_member<Struct const, Key>
{
typedef typename
add_const<typename struct_assoc_member<Struct, Key>::type>::type
type;
static type&
call(Struct const& struct_)
template<typename Struct, typename Key>
struct struct_assoc_member
{
return struct_assoc_member<Struct, Key>::call(
const_cast<Struct&>(struct_));
}
};
typedef no_such_member type;
};
}}}
template<typename Struct, typename Key>
struct struct_assoc_member<Struct const, Key>
{
typedef typename
add_const<typename struct_assoc_member<Struct, Key>::type>::type
type;
static type&
call(Struct const& struct_)
{
return struct_assoc_member<Struct, Key>::call(
const_cast<Struct&>(struct_));
}
};
}
}}
#endif