mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
115 lines
4.5 KiB
C++
115 lines
4.5 KiB
C++
#ifndef SPROUT_ALGORITHM_FIXED_COPY_N_HPP
|
|
#define SPROUT_ALGORITHM_FIXED_COPY_N_HPP
|
|
|
|
#include <iterator>
|
|
#include <type_traits>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/container/traits.hpp>
|
|
#include <sprout/container/functions.hpp>
|
|
#include <sprout/iterator/operation.hpp>
|
|
#include <sprout/algorithm/fixed/result_of.hpp>
|
|
#include <sprout/algorithm/fixed/copy.hpp>
|
|
#include <sprout/pit.hpp>
|
|
#include <sprout/math/comparison.hpp>
|
|
#include <sprout/detail/container_complate.hpp>
|
|
|
|
namespace sprout {
|
|
namespace fixed {
|
|
namespace detail {
|
|
template<typename RandomAccessIterator, typename Size, typename Result>
|
|
inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
|
|
copy_n(
|
|
RandomAccessIterator first, Size n, Result const& result,
|
|
std::random_access_iterator_tag*
|
|
)
|
|
{
|
|
return sprout::fixed::copy(first, sprout::next(first, n), result);
|
|
}
|
|
|
|
template<typename InputIterator, typename Size, typename Result, typename... Args>
|
|
inline SPROUT_CONSTEXPR typename std::enable_if<
|
|
sprout::container_traits<Result>::static_size == sizeof...(Args),
|
|
typename sprout::fixed::result_of::algorithm<Result>::type
|
|
>::type
|
|
copy_n_impl(InputIterator first, Size n, Result const& result,
|
|
typename sprout::container_traits<Result>::difference_type offset,
|
|
Args const&... args
|
|
)
|
|
{
|
|
return sprout::remake<Result>(result, sprout::size(result), args...);
|
|
}
|
|
template<typename InputIterator, typename Size, typename Result, typename... Args>
|
|
inline SPROUT_CONSTEXPR typename std::enable_if<
|
|
sprout::container_traits<Result>::static_size != sizeof...(Args),
|
|
typename sprout::fixed::result_of::algorithm<Result>::type
|
|
>::type
|
|
copy_n_impl(
|
|
InputIterator first, Size n, Result const& result,
|
|
typename sprout::container_traits<Result>::difference_type offset,
|
|
Args const&... args
|
|
)
|
|
{
|
|
return n != 0 && sprout::math::less(sizeof...(Args), offset)
|
|
? sprout::fixed::detail::copy_n_impl(sprout::next(first), n - 1, result, offset, args..., *first)
|
|
: sprout::detail::container_complate(result, args...)
|
|
;
|
|
}
|
|
template<typename InputIterator, typename Size, typename Result>
|
|
inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
|
|
copy_n(
|
|
InputIterator first, Size n, Result const& result,
|
|
void*
|
|
)
|
|
{
|
|
return sprout::fixed::detail::copy_n_impl(first, n, result, sprout::size(result));
|
|
}
|
|
|
|
template<typename InputIterator, typename Size, typename Result>
|
|
inline SPROUT_CONSTEXPR typename std::enable_if<
|
|
sprout::is_fixed_container<Result>::value,
|
|
typename sprout::fixed::result_of::algorithm<Result>::type
|
|
>::type
|
|
copy_n(InputIterator first, Size n, Result const& result) {
|
|
typedef typename std::iterator_traits<InputIterator>::iterator_category* category;
|
|
return sprout::fixed::detail::copy_n(first, n, result, category());
|
|
}
|
|
|
|
template<typename ForwardIterator, typename Size, typename Result>
|
|
inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
|
|
copy_n_dyn(
|
|
ForwardIterator first, Size n, Result const& result,
|
|
std::forward_iterator_tag*
|
|
)
|
|
{
|
|
return sprout::fixed::copy(first, sprout::next(first, n), result);
|
|
}
|
|
template<typename InputIterator, typename Size, typename Result>
|
|
inline SPROUT_CONSTEXPR typename std::enable_if<
|
|
!sprout::is_fixed_container<Result>::value,
|
|
typename sprout::fixed::result_of::algorithm<Result>::type
|
|
>::type
|
|
copy_n(InputIterator first, Size n, Result const& result) {
|
|
typedef typename std::iterator_traits<InputIterator>::iterator_category* category;
|
|
return sprout::fixed::detail::copy_n_dyn(first, n, result, category());
|
|
}
|
|
} // namespace detail
|
|
//
|
|
// copy_n
|
|
//
|
|
template<typename InputIterator, typename Size, typename Result>
|
|
inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
|
|
copy_n(InputIterator first, Size n, Result const& result) {
|
|
return sprout::fixed::detail::copy_n(first, n, result);
|
|
}
|
|
|
|
template<typename Result, typename InputIterator, typename Size>
|
|
inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
|
|
copy_n(InputIterator first, Size n) {
|
|
return sprout::fixed::copy_n(first, n, sprout::pit<Result>());
|
|
}
|
|
} // namespace fixed
|
|
|
|
using sprout::fixed::copy_n;
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_ALGORITHM_FIXED_COPY_N_HPP
|