mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-12-23 21:25:49 +00:00
Merge pull request #31 from kariya-mitsuru/lexicographical_compare
[algorithm.lexicographical_compare, algorithm.tristate_lexicographical_compare]
This commit is contained in:
Bolero MURAKAMI
commit
12e72dbf7e
3 changed files with 151 additions and 226 deletions
|
|
@ -11,7 +11,8 @@
|
|||
#include <iterator>
|
||||
#include <type_traits>
|
||||
#include <sprout/config.hpp>
|
||||
#include <sprout/iterator/operation.hpp>
|
||||
#include <sprout/detail/algorithm/lexicographical_compare.hpp>
|
||||
#include <sprout/iterator/distance.hpp>
|
||||
#include <sprout/iterator/type_traits/category.hpp>
|
||||
#include <sprout/iterator/type_traits/common.hpp>
|
||||
#include <sprout/utility/pair/pair.hpp>
|
||||
|
|
@ -20,55 +21,16 @@
|
|||
|
||||
namespace sprout {
|
||||
namespace detail {
|
||||
template<typename InputIterator1, typename InputIterator2, typename Compare>
|
||||
template<typename Difference1, typename Difference2>
|
||||
inline SPROUT_CONSTEXPR bool
|
||||
lexicographical_compare_impl_check(
|
||||
InputIterator1 last1, InputIterator2 last2, Compare comp,
|
||||
sprout::pair<InputIterator1, InputIterator2> const& found
|
||||
Difference1 size1, Difference2 size2,
|
||||
int found
|
||||
)
|
||||
{
|
||||
return found.second == last2 ? false
|
||||
: found.first == last1 || comp(*found.first, *found.second)
|
||||
;
|
||||
return found < 0 || found == 2 && size1 < size2;
|
||||
}
|
||||
|
||||
template<typename RandomAccessIterator1, typename RandomAccessIterator2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR sprout::pair<RandomAccessIterator1, RandomAccessIterator2>
|
||||
lexicographical_compare_impl_ra_1(
|
||||
RandomAccessIterator1 first1, RandomAccessIterator1 last1, RandomAccessIterator2 first2, RandomAccessIterator2 last2, Compare comp,
|
||||
typename std::iterator_traits<RandomAccessIterator1>::difference_type pivot, sprout::pair<RandomAccessIterator1, RandomAccessIterator2> const& found
|
||||
)
|
||||
{
|
||||
typedef sprout::pair<RandomAccessIterator1, RandomAccessIterator2> found_type;
|
||||
return found.first != first1 ? found
|
||||
: pivot == 0 ? (comp(*first1, *first2) || comp(*first2, *first1) ? found_type(first1, first2) : found_type(last1, last2))
|
||||
: sprout::detail::lexicographical_compare_impl_ra_1(
|
||||
sprout::next(first1, pivot), last1, sprout::next(first2, pivot), last2, comp,
|
||||
(sprout::distance(first1, last1) - pivot) / 2,
|
||||
sprout::detail::lexicographical_compare_impl_ra_1(
|
||||
first1, sprout::next(first1, pivot), first2, sprout::next(first2, pivot), comp,
|
||||
pivot / 2,
|
||||
found_type(first1, first2)
|
||||
)
|
||||
)
|
||||
;
|
||||
}
|
||||
template<typename RandomAccessIterator1, typename RandomAccessIterator2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR bool
|
||||
lexicographical_compare_impl_ra(
|
||||
RandomAccessIterator1 first1, RandomAccessIterator1 last1, RandomAccessIterator2 first2, RandomAccessIterator2 last2, Compare comp,
|
||||
typename std::iterator_traits<RandomAccessIterator1>::difference_type size
|
||||
)
|
||||
{
|
||||
typedef sprout::pair<RandomAccessIterator1, RandomAccessIterator2> found_type;
|
||||
return sprout::detail::lexicographical_compare_impl_check(
|
||||
last1, last2, comp,
|
||||
sprout::detail::lexicographical_compare_impl_ra_1(
|
||||
first1, sprout::next(first1, size), first2, sprout::next(first2, size), comp,
|
||||
size / 2, found_type(first1, first2)
|
||||
)
|
||||
);
|
||||
}
|
||||
template<typename RandomAccessIterator1, typename RandomAccessIterator2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR typename std::enable_if<
|
||||
sprout::is_constant_distance_iterator<RandomAccessIterator1>::value,
|
||||
|
|
@ -81,53 +43,29 @@ namespace sprout {
|
|||
{
|
||||
return first2 == last2 ? false
|
||||
: first1 == last1 ? true
|
||||
: sprout::detail::lexicographical_compare_impl_ra(
|
||||
first1, last1, first2, last2, comp,
|
||||
NS_SSCRISK_CEL_OR_SPROUT::min(sprout::distance(first1, last1), sprout::distance(first2, last2))
|
||||
: sprout::detail::lexicographical_compare_impl_check(
|
||||
sprout::distance(first1, last1), sprout::distance(first2, last2),
|
||||
sprout::detail::lexicographical_compare_impl_ra(
|
||||
first1, first2, comp,
|
||||
NS_SSCRISK_CEL_OR_SPROUT::min(sprout::distance(first1, last1), sprout::distance(first2, last2)),
|
||||
2
|
||||
)
|
||||
)
|
||||
;
|
||||
}
|
||||
|
||||
template<typename InputIterator1, typename InputIterator2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR sprout::pair<InputIterator1, InputIterator2>
|
||||
lexicographical_compare_impl_1(
|
||||
sprout::pair<InputIterator1, InputIterator2> current,
|
||||
inline SPROUT_CONSTEXPR bool
|
||||
lexicographical_compare_impl_check(
|
||||
InputIterator1 last1, InputIterator2 last2, Compare comp,
|
||||
typename std::iterator_traits<InputIterator1>::difference_type n
|
||||
sprout::pair<InputIterator1, InputIterator2> const& found
|
||||
)
|
||||
{
|
||||
typedef sprout::pair<InputIterator1, InputIterator2> type;
|
||||
return current.second == last2 || current.first == last1 ? current
|
||||
: n == 1 ? comp(*current.first, *current.second) ? type(last1, current.second)
|
||||
: comp(*current.second, *current.first) ? type(current.first, last2)
|
||||
: type(sprout::next(current.first), sprout::next(current.second))
|
||||
: sprout::detail::lexicographical_compare_impl_1(
|
||||
sprout::detail::lexicographical_compare_impl_1(
|
||||
current,
|
||||
last1, last2, comp, n / 2
|
||||
),
|
||||
last1, last2, comp, n - n / 2
|
||||
)
|
||||
;
|
||||
}
|
||||
template<typename InputIterator1, typename InputIterator2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR sprout::pair<InputIterator1, InputIterator2>
|
||||
lexicographical_compare_impl(
|
||||
sprout::pair<InputIterator1, InputIterator2> current,
|
||||
InputIterator1 last1, InputIterator2 last2, Compare comp,
|
||||
typename std::iterator_traits<InputIterator1>::difference_type n
|
||||
)
|
||||
{
|
||||
return current.second == last2 || current.first == last1 ? current
|
||||
: sprout::detail::lexicographical_compare_impl(
|
||||
sprout::detail::lexicographical_compare_impl_1(
|
||||
current,
|
||||
last1, last2, comp, n
|
||||
),
|
||||
last1, last2, comp, n * 2
|
||||
)
|
||||
return found.second == last2 ? false
|
||||
: found.first == last1 || comp(*found.first, *found.second)
|
||||
;
|
||||
}
|
||||
|
||||
template<typename InputIterator1, typename InputIterator2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR bool
|
||||
lexicographical_compare(
|
||||
|
|
|
|||
|
|
@ -11,6 +11,7 @@
|
|||
#include <iterator>
|
||||
#include <type_traits>
|
||||
#include <sprout/config.hpp>
|
||||
#include <sprout/detail/algorithm/lexicographical_compare.hpp>
|
||||
#include <sprout/iterator/operation.hpp>
|
||||
#include <sprout/iterator/type_traits/category.hpp>
|
||||
#include <sprout/iterator/type_traits/common.hpp>
|
||||
|
|
@ -20,58 +21,18 @@
|
|||
|
||||
namespace sprout {
|
||||
namespace detail {
|
||||
template<typename InputIterator1, typename InputIterator2, typename Compare>
|
||||
template<typename Difference1, typename Difference2>
|
||||
inline SPROUT_CONSTEXPR int
|
||||
tristate_lexicographical_compare_impl_check(
|
||||
InputIterator1 last1, InputIterator2 last2, Compare comp,
|
||||
sprout::pair<InputIterator1, InputIterator2> const& found
|
||||
tristate_lexicographical_compare_impl_ra_check(
|
||||
Difference1 size1, Difference2 size2, int found
|
||||
)
|
||||
{
|
||||
return found.second == last2 ? (found.first == last1 ? 0 : 1)
|
||||
: found.first == last1 ? -1
|
||||
: comp(*found.first, *found.second) ? -1
|
||||
: comp(*found.second, *found.first) ? 1
|
||||
: 0
|
||||
return found != 2 ? found
|
||||
: size1 < size2 ? -1
|
||||
: size1 > size2 ? 1 : 0
|
||||
;
|
||||
}
|
||||
|
||||
template<typename RandomAccessIterator1, typename RandomAccessIterator2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR sprout::pair<RandomAccessIterator1, RandomAccessIterator2>
|
||||
tristate_lexicographical_compare_impl_ra_1(
|
||||
RandomAccessIterator1 first1, RandomAccessIterator1 last1, RandomAccessIterator2 first2, RandomAccessIterator2 last2, Compare comp,
|
||||
typename std::iterator_traits<RandomAccessIterator1>::difference_type pivot, sprout::pair<RandomAccessIterator1, RandomAccessIterator2> const& found
|
||||
)
|
||||
{
|
||||
typedef sprout::pair<RandomAccessIterator1, RandomAccessIterator2> found_type;
|
||||
return found.first != first1 ? found
|
||||
: pivot == 0 ? (comp(*first1, *first2) || comp(*first2, *first1) ? found_type(first1, first2) : found_type(last1, last2))
|
||||
: sprout::detail::tristate_lexicographical_compare_impl_ra_1(
|
||||
sprout::next(first1, pivot), last1, sprout::next(first2, pivot), last2, comp,
|
||||
(sprout::distance(first1, last1) - pivot) / 2,
|
||||
sprout::detail::tristate_lexicographical_compare_impl_ra_1(
|
||||
first1, sprout::next(first1, pivot), first2, sprout::next(first2, pivot), comp,
|
||||
pivot / 2,
|
||||
found_type(first1, first2)
|
||||
)
|
||||
)
|
||||
;
|
||||
}
|
||||
template<typename RandomAccessIterator1, typename RandomAccessIterator2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR int
|
||||
tristate_lexicographical_compare_impl_ra(
|
||||
RandomAccessIterator1 first1, RandomAccessIterator1 last1, RandomAccessIterator2 first2, RandomAccessIterator2 last2, Compare comp,
|
||||
typename std::iterator_traits<RandomAccessIterator1>::difference_type size
|
||||
)
|
||||
{
|
||||
typedef sprout::pair<RandomAccessIterator1, RandomAccessIterator2> found_type;
|
||||
return sprout::detail::tristate_lexicographical_compare_impl_check(
|
||||
last1, last2, comp,
|
||||
sprout::detail::tristate_lexicographical_compare_impl_ra_1(
|
||||
first1, sprout::next(first1, size), first2, sprout::next(first2, size), comp,
|
||||
size / 2, found_type(first1, first2)
|
||||
)
|
||||
);
|
||||
}
|
||||
template<typename RandomAccessIterator1, typename RandomAccessIterator2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR typename std::enable_if<
|
||||
sprout::is_constant_distance_iterator<RandomAccessIterator1>::value,
|
||||
|
|
@ -84,53 +45,32 @@ namespace sprout {
|
|||
{
|
||||
return first2 == last2 ? (first1 == last1 ? 0 : 1)
|
||||
: first1 == last1 ? -1
|
||||
: sprout::detail::tristate_lexicographical_compare_impl_ra(
|
||||
first1, last1, first2, last2, comp,
|
||||
NS_SSCRISK_CEL_OR_SPROUT::min(sprout::distance(first1, last1), sprout::distance(first2, last2))
|
||||
: sprout::detail::tristate_lexicographical_compare_impl_ra_check(
|
||||
sprout::distance(first1, last1), sprout::distance(first2, last2),
|
||||
sprout::detail::lexicographical_compare_impl_ra(
|
||||
first1, first2, comp,
|
||||
NS_SSCRISK_CEL_OR_SPROUT::min(sprout::distance(first1, last1), sprout::distance(first2, last2)),
|
||||
2
|
||||
)
|
||||
)
|
||||
;
|
||||
}
|
||||
|
||||
template<typename InputIterator1, typename InputIterator2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR sprout::pair<InputIterator1, InputIterator2>
|
||||
tristate_lexicographical_compare_impl_1(
|
||||
sprout::pair<InputIterator1, InputIterator2> const& current,
|
||||
InputIterator1 last1, InputIterator2 last2, Compare comp,
|
||||
typename std::iterator_traits<InputIterator1>::difference_type n
|
||||
)
|
||||
inline SPROUT_CONSTEXPR int
|
||||
tristate_lexicographical_compare_impl_check(
|
||||
InputIterator1 last1, InputIterator2 last2, Compare comp,
|
||||
sprout::pair<InputIterator1, InputIterator2> const& found
|
||||
)
|
||||
{
|
||||
typedef sprout::pair<InputIterator1, InputIterator2> type;
|
||||
return current.second == last2 || current.first == last1 ? current
|
||||
: n == 1 ? comp(*current.first, *current.second) ? type(last1, current.second)
|
||||
: comp(*current.second, *current.first) ? type(current.first, last2)
|
||||
: type(sprout::next(current.first), sprout::next(current.second))
|
||||
: sprout::detail::tristate_lexicographical_compare_impl_1(
|
||||
sprout::detail::tristate_lexicographical_compare_impl_1(
|
||||
current,
|
||||
last1, last2, comp, n / 2
|
||||
),
|
||||
last1, last2, comp, n - n / 2
|
||||
)
|
||||
;
|
||||
}
|
||||
template<typename InputIterator1, typename InputIterator2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR sprout::pair<InputIterator1, InputIterator2>
|
||||
tristate_lexicographical_compare_impl(
|
||||
sprout::pair<InputIterator1, InputIterator2> const& current,
|
||||
InputIterator1 last1, InputIterator2 last2, Compare comp,
|
||||
typename std::iterator_traits<InputIterator1>::difference_type n
|
||||
)
|
||||
{
|
||||
return current.second == last2 || current.first == last1 ? current
|
||||
: sprout::detail::tristate_lexicographical_compare_impl(
|
||||
sprout::detail::tristate_lexicographical_compare_impl_1(
|
||||
current,
|
||||
last1, last2, comp, n
|
||||
),
|
||||
last1, last2, comp, n * 2
|
||||
)
|
||||
;
|
||||
return found.second == last2 ? (found.first == last1 ? 0 : 1)
|
||||
: found.first == last1 ? -1
|
||||
: comp(*found.first, *found.second) ? -1
|
||||
: comp(*found.second, *found.first) ? 1
|
||||
: 0
|
||||
;
|
||||
}
|
||||
|
||||
template<typename InputIterator1, typename InputIterator2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR int
|
||||
tristate_lexicographical_compare(
|
||||
|
|
@ -141,7 +81,7 @@ namespace sprout {
|
|||
typedef sprout::pair<InputIterator1, InputIterator2> type;
|
||||
return sprout::detail::tristate_lexicographical_compare_impl_check(
|
||||
last1, last2, comp,
|
||||
sprout::detail::tristate_lexicographical_compare_impl(type(first1, first2), last1, last2, comp, 1)
|
||||
sprout::detail::lexicographical_compare_impl(type(first1, first2), last1, last2, comp, 1)
|
||||
);
|
||||
}
|
||||
} // namespace detail
|
||||
|
|
@ -180,65 +120,33 @@ namespace sprout {
|
|||
namespace detail {
|
||||
template<typename RandomAccessIterator1, typename T1, typename RandomAccessIterator2, typename T2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR int
|
||||
tristate_lexicographical_compare_2_impl_ra_2(
|
||||
RandomAccessIterator1 last1, T1 const& delim1, RandomAccessIterator2 last2, T2 const& delim2, Compare comp,
|
||||
sprout::pair<RandomAccessIterator1, RandomAccessIterator2> const& found
|
||||
)
|
||||
{
|
||||
return found.second == last2 || (!comp(*found.second, delim2) && !comp(delim2, *found.second))
|
||||
? (found.first == last1 || (!comp(*found.first, delim1) && !comp(delim1, *found.first)) ? 0 : 1)
|
||||
: found.first == last1 || (!comp(*found.first, delim1) && !comp(delim1, *found.first)) ? -1
|
||||
: comp(*found.first, *found.second) ? -1
|
||||
: comp(*found.second, *found.first) ? 1
|
||||
: 0
|
||||
;
|
||||
}
|
||||
template<typename RandomAccessIterator1, typename T1, typename RandomAccessIterator2, typename T2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR sprout::pair<RandomAccessIterator1, RandomAccessIterator2>
|
||||
tristate_lexicographical_compare_2_impl_ra_1(
|
||||
RandomAccessIterator1 first1, RandomAccessIterator1 last1, T1 const& delim1,
|
||||
RandomAccessIterator2 first2, RandomAccessIterator2 last2, T2 const& delim2,
|
||||
tristate_lexicographical_compare_2_impl_ra(
|
||||
RandomAccessIterator1 first1, T1 const& delim1,
|
||||
RandomAccessIterator2 first2, T2 const& delim2,
|
||||
Compare comp,
|
||||
typename std::iterator_traits<RandomAccessIterator1>::difference_type pivot, sprout::pair<RandomAccessIterator1, RandomAccessIterator2> const& found
|
||||
typename std::iterator_traits<RandomAccessIterator1>::difference_type size, int found
|
||||
)
|
||||
{
|
||||
typedef sprout::pair<RandomAccessIterator1, RandomAccessIterator2> found_type;
|
||||
return found.first != first1 ? found
|
||||
: pivot == 0 ? (
|
||||
comp(*first1, *first2) || comp(*first2, *first1) || (!comp(*first1, delim1) && !comp(delim1, *first1)) || (!comp(*first2, delim2) && !comp(delim2, *first2))
|
||||
? found_type(first1, first2) : found_type(last1, last2)
|
||||
)
|
||||
: sprout::detail::tristate_lexicographical_compare_2_impl_ra_1(
|
||||
sprout::next(first1, pivot), last1, delim1, sprout::next(first2, pivot), last2, delim2, comp,
|
||||
(sprout::distance(first1, last1) - pivot) / 2,
|
||||
sprout::detail::tristate_lexicographical_compare_2_impl_ra_1(
|
||||
first1, sprout::next(first1, pivot), delim1, first2, sprout::next(first2, pivot), delim2, comp,
|
||||
pivot / 2,
|
||||
found_type(first1, first2)
|
||||
return found != 2 ? found
|
||||
: size == 1
|
||||
? !comp(*first2, delim2) && !comp(delim2, *first2)
|
||||
? !comp(*first1, delim1) && !comp(delim1, *first1) ? 0 : 1
|
||||
: !comp(*first1, delim1) && !comp(delim1, *first1) || comp(*first1, *first2)
|
||||
? -1
|
||||
: comp(*first2, *first1) ? 1 : 2
|
||||
: sprout::detail::tristate_lexicographical_compare_2_impl_ra(
|
||||
sprout::next(first1, size / 2), delim1, sprout::next(first2, size / 2), delim2, comp,
|
||||
size - size / 2,
|
||||
sprout::detail::tristate_lexicographical_compare_2_impl_ra(
|
||||
first1, delim1, first2, delim2, comp,
|
||||
size / 2,
|
||||
2
|
||||
)
|
||||
)
|
||||
;
|
||||
}
|
||||
template<typename RandomAccessIterator1, typename T1, typename RandomAccessIterator2, typename T2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR int
|
||||
tristate_lexicographical_compare_2_impl_ra(
|
||||
RandomAccessIterator1 first1, RandomAccessIterator1 last1, T1 const& delim1,
|
||||
RandomAccessIterator2 first2, RandomAccessIterator2 last2, T2 const& delim2,
|
||||
Compare comp,
|
||||
typename std::iterator_traits<RandomAccessIterator1>::difference_type size
|
||||
)
|
||||
{
|
||||
typedef sprout::pair<RandomAccessIterator1, RandomAccessIterator2> found_type;
|
||||
return sprout::detail::tristate_lexicographical_compare_2_impl_ra_2(
|
||||
last1, delim1, last2, delim2, comp,
|
||||
sprout::detail::tristate_lexicographical_compare_2_impl_ra_1(
|
||||
first1, sprout::next(first1, size), delim1, first2, sprout::next(first2, size), delim2, comp,
|
||||
size / 2, found_type(first1, first2)
|
||||
)
|
||||
);
|
||||
}
|
||||
template<typename RandomAccessIterator1, typename T1, typename RandomAccessIterator2, typename T2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR int
|
||||
tristate_lexicographical_compare_2(
|
||||
RandomAccessIterator1 first1, RandomAccessIterator1 last1, T1 const& delim1,
|
||||
RandomAccessIterator2 first2, RandomAccessIterator2 last2, T2 const& delim2,
|
||||
|
|
@ -246,12 +154,16 @@ namespace sprout {
|
|||
std::random_access_iterator_tag*
|
||||
)
|
||||
{
|
||||
return first2 == last2 || (!comp(*first2, delim2) && !comp(delim2, *first2)) ? (first1 == last1 || (!comp(*first1, delim1) && !comp(delim1, *first1)) ? 0 : 1)
|
||||
: first1 == last1 || (!comp(*first1, delim1) && !comp(delim1, *first1)) ? -1
|
||||
return sprout::detail::tristate_lexicographical_compare_impl_ra_check(
|
||||
sprout::distance(first1, last1), sprout::distance(first2, last2),
|
||||
first2 == last2 || first1 == last1
|
||||
? 2
|
||||
: sprout::detail::tristate_lexicographical_compare_2_impl_ra(
|
||||
first1, last1, delim1, first2, last2, delim2, comp,
|
||||
NS_SSCRISK_CEL_OR_SPROUT::min(sprout::distance(first1, last1), sprout::distance(first2, last2))
|
||||
first1, delim1, first2, delim2, comp,
|
||||
NS_SSCRISK_CEL_OR_SPROUT::min(sprout::distance(first1, last1), sprout::distance(first2, last2)),
|
||||
2
|
||||
)
|
||||
)
|
||||
;
|
||||
}
|
||||
|
||||
|
|
@ -265,9 +177,11 @@ namespace sprout {
|
|||
{
|
||||
typedef sprout::pair<InputIterator1, InputIterator2> type;
|
||||
return current.second == last2 || current.first == last1 ? current
|
||||
: !comp(*current.second, delim2) && !comp(delim2, *current.second) ? type(!comp(*current.first, delim1) && !comp(delim1, *current.first) ? last1 : current.first, last2)
|
||||
: !comp(*current.first, delim1) && !comp(delim1, *current.first) ? type(last1, current.second)
|
||||
: n == 1 ? comp(*current.first, *current.second) ? type(last1, current.second)
|
||||
: n == 1
|
||||
? !comp(*current.second, delim2) && !comp(delim2, *current.second)
|
||||
? type(!comp(*current.first, delim1) && !comp(delim1, *current.first) ? last1 : current.first, last2)
|
||||
: !comp(*current.first, delim1) && !comp(delim1, *current.first) || comp(*current.first, *current.second)
|
||||
? type(last1, current.second)
|
||||
: comp(*current.second, *current.first) ? type(current.first, last2)
|
||||
: type(sprout::next(current.first), sprout::next(current.second))
|
||||
: sprout::detail::tristate_lexicographical_compare_impl_1(
|
||||
|
|
@ -299,7 +213,7 @@ namespace sprout {
|
|||
}
|
||||
template<typename InputIterator1, typename T1, typename InputIterator2, typename T2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR int
|
||||
tristate_lexicographical_compare(
|
||||
tristate_lexicographical_compare_2(
|
||||
InputIterator1 first1, InputIterator1 last1, T1 const& delim1,
|
||||
InputIterator2 first2, InputIterator2 last2, T2 const& delim2,
|
||||
Compare comp,
|
||||
|
|
|
|||
73
sprout/detail/algorithm/lexicographical_compare.hpp
Normal file
73
sprout/detail/algorithm/lexicographical_compare.hpp
Normal file
|
|
@ -0,0 +1,73 @@
|
|||
#ifndef SPROUT_DETAIL_ALGORITHM_LEXICOGRAPHICAL_COMPARE_HPP
|
||||
#define SPROUT_DETAIL_ALGORITHM_LEXICOGRAPHICAL_COMPARE_HPP
|
||||
|
||||
#include <sprout/config.hpp>
|
||||
#include <sprout/utility/pair/pair.hpp>
|
||||
#include <sprout/iterator/next.hpp>
|
||||
|
||||
namespace sprout {
|
||||
namespace detail {
|
||||
template<typename RandomAccessIterator1, typename RandomAccessIterator2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR int
|
||||
lexicographical_compare_impl_ra(
|
||||
RandomAccessIterator1 first1, RandomAccessIterator2 first2, Compare comp,
|
||||
typename std::iterator_traits<RandomAccessIterator1>::difference_type size,
|
||||
int found
|
||||
)
|
||||
{
|
||||
return found != 2 ? found
|
||||
: size == 1 ? comp(*first1, *first2) ? -1 : comp(*first2, *first1) ? 1 : 2
|
||||
: sprout::detail::lexicographical_compare_impl_ra(
|
||||
sprout::next(first1, size / 2), sprout::next(first2, size / 2), comp, size - size / 2,
|
||||
sprout::detail::lexicographical_compare_impl_ra(
|
||||
first1, first2, comp, size / 2,
|
||||
2
|
||||
)
|
||||
)
|
||||
;
|
||||
}
|
||||
|
||||
template<typename InputIterator1, typename InputIterator2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR sprout::pair<InputIterator1, InputIterator2>
|
||||
lexicographical_compare_impl_1(
|
||||
sprout::pair<InputIterator1, InputIterator2> const& current,
|
||||
InputIterator1 last1, InputIterator2 last2, Compare comp,
|
||||
typename std::iterator_traits<InputIterator1>::difference_type n
|
||||
)
|
||||
{
|
||||
typedef sprout::pair<InputIterator1, InputIterator2> type;
|
||||
return current.second == last2 || current.first == last1 ? current
|
||||
: n == 1 ? comp(*current.first, *current.second) ? type(last1, current.second)
|
||||
: comp(*current.second, *current.first) ? type(current.first, last2)
|
||||
: type(sprout::next(current.first), sprout::next(current.second))
|
||||
: sprout::detail::lexicographical_compare_impl_1(
|
||||
sprout::detail::lexicographical_compare_impl_1(
|
||||
current,
|
||||
last1, last2, comp, n / 2
|
||||
),
|
||||
last1, last2, comp, n - n / 2
|
||||
)
|
||||
;
|
||||
}
|
||||
template<typename InputIterator1, typename InputIterator2, typename Compare>
|
||||
inline SPROUT_CONSTEXPR sprout::pair<InputIterator1, InputIterator2>
|
||||
lexicographical_compare_impl(
|
||||
sprout::pair<InputIterator1, InputIterator2> const& current,
|
||||
InputIterator1 last1, InputIterator2 last2, Compare comp,
|
||||
typename std::iterator_traits<InputIterator1>::difference_type n
|
||||
)
|
||||
{
|
||||
return current.second == last2 || current.first == last1 ? current
|
||||
: sprout::detail::lexicographical_compare_impl(
|
||||
sprout::detail::lexicographical_compare_impl_1(
|
||||
current,
|
||||
last1, last2, comp, n
|
||||
),
|
||||
last1, last2, comp, n * 2
|
||||
)
|
||||
;
|
||||
}
|
||||
} // namespace detail
|
||||
} // namespace sprout
|
||||
|
||||
#endif /* #ifndef SPROUT_DETAIL_ALGORITHM_LEXICOGRAPHICAL_COMPARE_HPP */
|
||||
Loading…
Reference in a new issue