Sprout/sprout/algorithm/fit/unfold.hpp
2012-09-28 13:15:17 +09:00

44 lines
1.3 KiB
C++

#ifndef SPROUT_ALGORITHM_FIT_UNFOLD_HPP
#define SPROUT_ALGORITHM_FIT_UNFOLD_HPP
#include <sprout/config.hpp>
#include <sprout/container/traits.hpp>
#include <sprout/container/functions.hpp>
#include <sprout/algorithm/fixed/unfold.hpp>
#include <sprout/algorithm/fit/result_of.hpp>
#include <sprout/sub_array.hpp>
namespace sprout {
namespace fit {
namespace detail {
template<typename Container, typename Generator, typename Init>
inline SPROUT_CONSTEXPR typename sprout::fit::result_of::algorithm<Container>::type unfold_impl(
Container const& cont,
Generator const& gen,
typename sprout::container_traits<Container>::difference_type offset,
Init const& init
)
{
return sprout::sub_copy(
sprout::get_internal(sprout::fixed::unfold(cont, gen, init)),
offset,
offset + sprout::size(cont)
);
}
} // namespace detail
//
// unfold
//
template<typename Container, typename Generator, typename Init>
inline SPROUT_CONSTEXPR typename sprout::fit::result_of::algorithm<Container>::type unfold(
Container const& cont,
Generator const& gen,
Init const& init
)
{
return sprout::fit::detail::unfold_impl(cont, gen, sprout::internal_begin_offset(cont), init);
}
} // namespace fit
} // namespace sprout
#endif // #ifndef SPROUT_ALGORITHM_FIT_UNFOLD_HPP