ad2fbea797
This has the benefit of consistent placement for these macros (outside the namespace, not inside it). This, in turn, makes it more obvious that the condition applies to the entire namespace scope. Compile times are also reduced a bit, since the compiler doesn't have to open a namespace just to close it again. This is enforced with a clang-tidy check. As a drive-by this also fixes a few macro comments.
51 lines
1.7 KiB
C++
51 lines
1.7 KiB
C++
// -*- 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___FUNCTIONAL_BINARY_NEGATE_H
|
|
#define _LIBCPP___FUNCTIONAL_BINARY_NEGATE_H
|
|
|
|
#include <__config>
|
|
#include <__functional/binary_function.h>
|
|
|
|
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
|
|
# pragma GCC system_header
|
|
#endif
|
|
|
|
#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS)
|
|
|
|
_LIBCPP_BEGIN_NAMESPACE_STD
|
|
|
|
template <class _Predicate>
|
|
class _LIBCPP_DEPRECATED_IN_CXX17 binary_negate
|
|
: public __binary_function<typename _Predicate::first_argument_type,
|
|
typename _Predicate::second_argument_type,
|
|
bool> {
|
|
_Predicate __pred_;
|
|
|
|
public:
|
|
_LIBCPP_HIDE_FROM_ABI explicit _LIBCPP_CONSTEXPR_SINCE_CXX14 binary_negate(const _Predicate& __pred)
|
|
: __pred_(__pred) {}
|
|
|
|
_LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_HIDE_FROM_ABI bool operator()(
|
|
const typename _Predicate::first_argument_type& __x, const typename _Predicate::second_argument_type& __y) const {
|
|
return !__pred_(__x, __y);
|
|
}
|
|
};
|
|
|
|
template <class _Predicate>
|
|
_LIBCPP_DEPRECATED_IN_CXX17 inline _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_HIDE_FROM_ABI binary_negate<_Predicate>
|
|
not2(const _Predicate& __pred) {
|
|
return binary_negate<_Predicate>(__pred);
|
|
}
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS)
|
|
|
|
#endif // _LIBCPP___FUNCTIONAL_BINARY_NEGATE_H
|