mirror of
https://github.com/llvm/llvm-project.git
synced 2025-05-18 11:16:07 +00:00
5aaefa510e
libc++ has started splicing standard library headers into much more fine-grained content for maintainability. It's very likely that outdated and naive tooling (some of which is outside of LLVM's scope) will suggest users include things such as <__ranges/access.h> instead of <ranges>, and Hyrum's law suggests that users will eventually begin to rely on this without the help of tooling. As such, this commit intends to protect users from themselves, by making it a hard error for anyone outside of the standard library to include libc++ detail headers. Differential Revision: https://reviews.llvm.org/D106124
83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef _LIBCPP___ALGORITHM_PARTITION_H
|
|
#define _LIBCPP___ALGORITHM_PARTITION_H
|
|
|
|
#include <__config>
|
|
#include <__iterator/iterator_traits.h>
|
|
#include <__utility/swap.h>
|
|
|
|
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
|
|
# pragma GCC system_header
|
|
# pragma clang include_instead(<algorithm>)
|
|
#endif
|
|
|
|
_LIBCPP_BEGIN_NAMESPACE_STD
|
|
|
|
template <class _Predicate, class _ForwardIterator>
|
|
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
|
|
__partition(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred, forward_iterator_tag)
|
|
{
|
|
while (true)
|
|
{
|
|
if (__first == __last)
|
|
return __first;
|
|
if (!__pred(*__first))
|
|
break;
|
|
++__first;
|
|
}
|
|
for (_ForwardIterator __p = __first; ++__p != __last;)
|
|
{
|
|
if (__pred(*__p))
|
|
{
|
|
swap(*__first, *__p);
|
|
++__first;
|
|
}
|
|
}
|
|
return __first;
|
|
}
|
|
|
|
template <class _Predicate, class _BidirectionalIterator>
|
|
_LIBCPP_CONSTEXPR_AFTER_CXX17 _BidirectionalIterator
|
|
__partition(_BidirectionalIterator __first, _BidirectionalIterator __last, _Predicate __pred,
|
|
bidirectional_iterator_tag)
|
|
{
|
|
while (true)
|
|
{
|
|
while (true)
|
|
{
|
|
if (__first == __last)
|
|
return __first;
|
|
if (!__pred(*__first))
|
|
break;
|
|
++__first;
|
|
}
|
|
do
|
|
{
|
|
if (__first == --__last)
|
|
return __first;
|
|
} while (!__pred(*__last));
|
|
swap(*__first, *__last);
|
|
++__first;
|
|
}
|
|
}
|
|
|
|
template <class _ForwardIterator, class _Predicate>
|
|
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
|
|
_ForwardIterator
|
|
partition(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
|
|
{
|
|
return _VSTD::__partition<_Predicate&>(
|
|
__first, __last, __pred, typename iterator_traits<_ForwardIterator>::iterator_category());
|
|
}
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP___ALGORITHM_PARTITION_H
|