diff options
Diffstat (limited to 'contrib/llvm-project/libcxx/include/__algorithm/unique.h')
| -rw-r--r-- | contrib/llvm-project/libcxx/include/__algorithm/unique.h | 48 |
1 files changed, 26 insertions, 22 deletions
diff --git a/contrib/llvm-project/libcxx/include/__algorithm/unique.h b/contrib/llvm-project/libcxx/include/__algorithm/unique.h index 264d727d93c8..1727225a91cd 100644 --- a/contrib/llvm-project/libcxx/include/__algorithm/unique.h +++ b/contrib/llvm-project/libcxx/include/__algorithm/unique.h @@ -11,9 +11,11 @@ #include <__algorithm/adjacent_find.h> #include <__algorithm/comp.h> +#include <__algorithm/iterator_operations.h> #include <__config> #include <__iterator/iterator_traits.h> #include <__utility/move.h> +#include <__utility/pair.h> #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) # pragma GCC system_header @@ -23,32 +25,34 @@ _LIBCPP_BEGIN_NAMESPACE_STD // unique +template <class _AlgPolicy, class _Iter, class _Sent, class _BinaryPredicate> +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 std::pair<_Iter, _Iter> +__unique(_Iter __first, _Sent __last, _BinaryPredicate&& __pred) { + __first = std::__adjacent_find(__first, __last, __pred); + if (__first != __last) { + // ... a a ? ... + // f i + _Iter __i = __first; + for (++__i; ++__i != __last;) + if (!__pred(*__first, *__i)) + *++__first = _IterOps<_AlgPolicy>::__iter_move(__i); + ++__first; + return std::pair<_Iter, _Iter>(std::move(__first), std::move(__i)); + } + return std::pair<_Iter, _Iter>(__first, __first); +} + template <class _ForwardIterator, class _BinaryPredicate> -_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator -unique(_ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred) -{ - __first = _VSTD::adjacent_find<_ForwardIterator, _BinaryPredicate&>(__first, __last, __pred); - if (__first != __last) - { - // ... a a ? ... - // f i - _ForwardIterator __i = __first; - for (++__i; ++__i != __last;) - if (!__pred(*__first, *__i)) - *++__first = _VSTD::move(*__i); - ++__first; - } - return __first; +_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator +unique(_ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred) { + return std::__unique<_ClassicAlgPolicy>(std::move(__first), std::move(__last), __pred).first; } template <class _ForwardIterator> -_LIBCPP_NODISCARD_EXT inline -_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 -_ForwardIterator -unique(_ForwardIterator __first, _ForwardIterator __last) -{ - typedef typename iterator_traits<_ForwardIterator>::value_type __v; - return _VSTD::unique(__first, __last, __equal_to<__v>()); +_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator +unique(_ForwardIterator __first, _ForwardIterator __last) { + typedef typename iterator_traits<_ForwardIterator>::value_type __v; + return std::unique(__first, __last, __equal_to<__v>()); } _LIBCPP_END_NAMESPACE_STD |