Louis Dionne 134723edd5 [libcxx] Move all algorithms into their own headers
This is a fairly mechanical change, it just moves each algorithm into
its own header. This is intended to be a NFC.

This commit re-applies 7ed7d4ccb899, which was reverted in 692d7166f771
because the Modules build got broken. The modules build has now been
fixed, so we're re-committing this.

Differential Revision: https://reviews.llvm.org/D103583

Attribution note
----------------
I'm only committing this. This commit is a mix of D103583, D103330 and
D104171 authored by:

Co-authored-by: Christopher Di Bella <cjdb@google.com>
Co-authored-by: zoecarver <z.zoelec2@gmail.com>
2021-06-19 07:49:06 -04:00

52 lines
1.4 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_REMOVE_IF_H
#define _LIBCPP___ALGORITHM_REMOVE_IF_H
#include <__config>
#include <__algorithm/find_if.h>
#include <utility>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
remove_if(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
{
__first = _VSTD::find_if<_ForwardIterator, typename add_lvalue_reference<_Predicate>::type>
(__first, __last, __pred);
if (__first != __last)
{
_ForwardIterator __i = __first;
while (++__i != __last)
{
if (!__pred(*__i))
{
*__first = _VSTD::move(*__i);
++__first;
}
}
}
return __first;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_REMOVE_IF_H