Sprout/sprout/operation/fixed/realign.hpp
bolero-MURAKAMI 01a0ce4380 operation/set.hpp 追加
random/shuffle_order.hpp 追加
2011-10-18 17:13:16 +09:00

97 lines
2.8 KiB
C++

#ifndef SPROUT_OPERATION_FIXED_REALIGN_HPP
#define SPROUT_OPERATION_FIXED_REALIGN_HPP
#include <cstddef>
#include <sprout/config.hpp>
#include <sprout/index_tuple.hpp>
#include <sprout/fixed_container/traits.hpp>
#include <sprout/fixed_container/functions.hpp>
#include <sprout/iterator/operation.hpp>
namespace sprout {
namespace fixed {
namespace result_of {
//
// realign
//
template<typename Container>
struct realign {
public:
typedef typename sprout::fixed_container_traits<Container>::clone_type type;
};
} // namespace result_of
namespace detail {
template<typename Result, typename Container, typename T, std::ptrdiff_t... Indexes>
SPROUT_CONSTEXPR inline Result realign_impl(
Container const& cont,
sprout::index_tuple<Indexes...>,
typename sprout::fixed_container_traits<Result>::difference_type size,
T const& v
)
{
return sprout::make_clone<Result>(
(Indexes < size
? *sprout::next(sprout::begin(cont), Indexes)
: v
)...
);
}
} // namespace detail
//
// realign
//
template<typename Container, typename T>
SPROUT_CONSTEXPR inline typename sprout::fixed::result_of::realign<Container>::type realign(
Container const& cont,
T const& v
)
{
return sprout::fixed::detail::realign_impl<typename sprout::fixed::result_of::realign<Container>::type>(
cont,
typename sprout::index_range<0, sprout::fixed_container_traits<typename sprout::fixed::result_of::realign<Container>::type>::fixed_size>::type(),
sprout::size(cont),
v
);
}
namespace detail {
template<typename Result, typename Container, std::ptrdiff_t... Indexes>
SPROUT_CONSTEXPR inline Result realign_impl(
Container const& cont,
sprout::index_tuple<Indexes...>,
typename sprout::fixed_container_traits<Result>::difference_type size
)
{
return sprout::make_clone<Result>(
(Indexes < size
? *sprout::next(sprout::begin(cont), Indexes)
: typename sprout::fixed_container_traits<Result>::value_type()
)...
);
}
} // namespace detail
//
// realign
//
template<typename Container>
SPROUT_CONSTEXPR inline typename sprout::fixed::result_of::realign<Container>::type realign(
Container const& cont
)
{
return sprout::fixed::detail::realign_impl<typename sprout::fixed::result_of::realign<Container>::type>(
cont,
typename sprout::index_range<0, sprout::fixed_container_traits<typename sprout::fixed::result_of::realign<Container>::type>::fixed_size>::type(),
sprout::size(cont)
);
}
} // namespace fixed
namespace result_of {
using sprout::fixed::result_of::realign;
} // namespace result_of
using sprout::fixed::realign;
} // namespace sprout
#endif // #ifndef SPROUT_OPERATION_FIXED_REALIGN_HPP