mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
100 lines
2.9 KiB
C++
100 lines
2.9 KiB
C++
#ifndef SPROUT_OPERATION_FIXED_RESIZE_HPP
|
|
#define SPROUT_OPERATION_FIXED_RESIZE_HPP
|
|
|
|
#include <cstddef>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/index_tuple.hpp>
|
|
#include <sprout/container/traits.hpp>
|
|
#include <sprout/container/functions.hpp>
|
|
#include <sprout/iterator/operation.hpp>
|
|
|
|
namespace sprout {
|
|
namespace fixed {
|
|
namespace result_of {
|
|
//
|
|
// resize
|
|
//
|
|
template<std::size_t N, typename Container>
|
|
struct resize {
|
|
public:
|
|
typedef typename sprout::container_transform_traits<
|
|
Container
|
|
>::template rebind_size<
|
|
N
|
|
>::type type;
|
|
};
|
|
} // namespace result_of
|
|
|
|
namespace detail {
|
|
template<typename Result, typename Container, typename T, sprout::index_t... Indexes>
|
|
inline SPROUT_CONSTEXPR Result resize_impl(
|
|
Container const& cont,
|
|
sprout::index_tuple<Indexes...>,
|
|
typename sprout::container_traits<Result>::difference_type size,
|
|
T const& v
|
|
)
|
|
{
|
|
return sprout::make<Result>(
|
|
(Indexes < size
|
|
? *sprout::next(sprout::begin(cont), Indexes)
|
|
: v
|
|
)...
|
|
);
|
|
}
|
|
} // namespace detail
|
|
//
|
|
// resize
|
|
//
|
|
template<std::size_t N, typename Container, typename T>
|
|
inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::resize<N, Container>::type resize(
|
|
Container const& cont,
|
|
T const& v
|
|
)
|
|
{
|
|
return sprout::fixed::detail::resize_impl<typename sprout::fixed::result_of::resize<N, Container>::type>(
|
|
cont,
|
|
sprout::index_range<0, sprout::container_traits<typename sprout::fixed::result_of::resize<N, Container>::type>::static_size>::make(),
|
|
sprout::size(cont),
|
|
v
|
|
);
|
|
}
|
|
|
|
namespace detail {
|
|
template<typename Result, typename Container, sprout::index_t... Indexes>
|
|
inline SPROUT_CONSTEXPR Result resize_impl(
|
|
Container const& cont,
|
|
sprout::index_tuple<Indexes...>,
|
|
typename sprout::container_traits<Result>::difference_type size
|
|
)
|
|
{
|
|
return sprout::make<Result>(
|
|
(Indexes < size
|
|
? *sprout::next(sprout::begin(cont), Indexes)
|
|
: typename sprout::container_traits<Result>::value_type()
|
|
)...
|
|
);
|
|
}
|
|
} // namespace detail
|
|
//
|
|
// resize
|
|
//
|
|
template<std::size_t N, typename Container>
|
|
inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::resize<N, Container>::type resize(
|
|
Container const& cont
|
|
)
|
|
{
|
|
return sprout::fixed::detail::resize_impl<typename sprout::fixed::result_of::resize<N, Container>::type>(
|
|
cont, sprout::index_range<0, sprout::container_traits<typename sprout::fixed::result_of::resize<N, Container>::type>::static_size>::make(),
|
|
sprout::size(cont)
|
|
);
|
|
}
|
|
} // namespace fixed
|
|
|
|
namespace result_of {
|
|
using sprout::fixed::result_of::resize;
|
|
} // namespace result_of
|
|
|
|
using sprout::fixed::resize;
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_OPERATION_FIXED_RESIZE_HPP
|