mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
#ifndef SPROUT_ALGORITHM_FIND_IF_HPP
|
|
#define SPROUT_ALGORITHM_FIND_IF_HPP
|
|
|
|
#include <iterator>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/iterator/operation.hpp>
|
|
#include HDR_ITERATOR_SSCRISK_CEL_OR_SPROUT
|
|
|
|
namespace sprout {
|
|
namespace detail {
|
|
template<typename RandomAccessIterator, typename Predicate>
|
|
inline SPROUT_CONSTEXPR RandomAccessIterator
|
|
find_if_impl_ra(
|
|
RandomAccessIterator first, RandomAccessIterator last, Predicate pred,
|
|
typename std::iterator_traits<RandomAccessIterator>::difference_type pivot, RandomAccessIterator found
|
|
)
|
|
{
|
|
return found != first ? found
|
|
: pivot == 0 ? (pred(*first) ? first : last)
|
|
: sprout::detail::find_if_impl_ra(
|
|
sprout::next(first, pivot), last, pred,
|
|
(NS_SSCRISK_CEL_OR_SPROUT::distance(first, last) - pivot) / 2,
|
|
sprout::detail::find_if_impl_ra(
|
|
first, sprout::next(first, pivot), pred,
|
|
pivot / 2,
|
|
first
|
|
)
|
|
)
|
|
;
|
|
}
|
|
template<typename RandomAccessIterator, typename Predicate>
|
|
inline SPROUT_CONSTEXPR RandomAccessIterator
|
|
find_if(
|
|
RandomAccessIterator first, RandomAccessIterator last, Predicate pred,
|
|
std::random_access_iterator_tag*
|
|
)
|
|
{
|
|
return first == last ? last
|
|
: sprout::detail::find_if_impl_ra(first, last, pred, NS_SSCRISK_CEL_OR_SPROUT::distance(first, last) / 2, first)
|
|
;
|
|
}
|
|
|
|
// Copyright (C) 2011 RiSK (sscrisk)
|
|
template<typename InputIterator, typename Predicate>
|
|
inline SPROUT_CONSTEXPR InputIterator
|
|
find_if_impl(InputIterator first, InputIterator last, Predicate pred) {
|
|
return first == last || pred(*first) ? first
|
|
: sprout::detail::find_if_impl(sprout::next(first), last, pred)
|
|
;
|
|
}
|
|
template<typename InputIterator, typename Predicate>
|
|
inline SPROUT_CONSTEXPR InputIterator
|
|
find_if(
|
|
InputIterator first, InputIterator last, Predicate pred,
|
|
void*
|
|
)
|
|
{
|
|
return sprout::detail::find_if_impl(first, last, pred);
|
|
}
|
|
} //namespace detail
|
|
|
|
// 25.2.5 Find
|
|
template<typename InputIterator, typename Predicate>
|
|
inline SPROUT_CONSTEXPR InputIterator
|
|
find_if(InputIterator first, InputIterator last, Predicate pred) {
|
|
typedef typename std::iterator_traits<InputIterator>::iterator_category* category;
|
|
return sprout::detail::find_if(first, last, pred, category());
|
|
}
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_ALGORITHM_FIND_IF_HPP
|