Files
clang-p2996/libcxx/include/__iterator/size.h
Louis Dionne 9783f28cbb [libc++] Format the code base (#74334)
This patch runs clang-format on all of libcxx/include and libcxx/src, in
accordance with the RFC discussed at [1]. Follow-up patches will format
the benchmarks, the test suite and remaining parts of the code. I'm
splitting this one into its own patch so the diff is a bit easier to
review.

This patch was generated with:

   find libcxx/include libcxx/src -type f \
      | grep -v 'module.modulemap.in' \
      | grep -v 'CMakeLists.txt' \
      | grep -v 'README.txt' \
      | grep -v 'libcxx.imp' \
      | grep -v '__config_site.in' \
      | xargs clang-format -i

A Git merge driver is available in libcxx/utils/clang-format-merge-driver.sh
to help resolve merge and rebase issues across these formatting changes.

[1]: https://discourse.llvm.org/t/rfc-clang-formatting-all-of-libc-once-and-for-all
2023-12-18 14:01:33 -05:00

60 lines
1.8 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___ITERATOR_SIZE_H
#define _LIBCPP___ITERATOR_SIZE_H
#include <__config>
#include <__type_traits/common_type.h>
#include <__type_traits/make_signed.h>
#include <cstddef>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
template <class _Cont>
_LIBCPP_HIDE_FROM_ABI constexpr auto size(const _Cont& __c) _NOEXCEPT_(noexcept(__c.size())) -> decltype(__c.size()) {
return __c.size();
}
template <class _Tp, size_t _Sz>
_LIBCPP_HIDE_FROM_ABI constexpr size_t size(const _Tp (&)[_Sz]) noexcept {
return _Sz;
}
# if _LIBCPP_STD_VER >= 20
template <class _Cont>
_LIBCPP_HIDE_FROM_ABI constexpr auto ssize(const _Cont& __c)
_NOEXCEPT_(noexcept(static_cast<common_type_t<ptrdiff_t, make_signed_t<decltype(__c.size())>>>(__c.size())))
-> common_type_t<ptrdiff_t, make_signed_t<decltype(__c.size())>> {
return static_cast<common_type_t<ptrdiff_t, make_signed_t<decltype(__c.size())>>>(__c.size());
}
// GCC complains about the implicit conversion from ptrdiff_t to size_t in
// the array bound.
_LIBCPP_DIAGNOSTIC_PUSH
_LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wsign-conversion")
template <class _Tp, ptrdiff_t _Sz>
_LIBCPP_HIDE_FROM_ABI constexpr ptrdiff_t ssize(const _Tp (&)[_Sz]) noexcept {
return _Sz;
}
_LIBCPP_DIAGNOSTIC_POP
# endif
#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___ITERATOR_SIZE_H