mirror of
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156ab87500
See: * https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc/77319 * https://discourse.llvm.org/t/rfc-project-hand-in-hand-llvm-libc-libc-code-sharing/77701 We're dropping support for C++03 for Zig due to the first change; it would be insane to ship 1018 duplicate header files just for this outdated use case. As a result of the second change, I had to bring in a subset of the headers from llvm-libc since libc++ now depends on these. Hopefully we can continue to get away with not copying the entirety of llvm-libc.
96 lines
2.4 KiB
C++
Vendored
96 lines
2.4 KiB
C++
Vendored
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___ITERATOR_ACCESS_H
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#define _LIBCPP___ITERATOR_ACCESS_H
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#include <__config>
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#include <__cstddef/size_t.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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template <class _Tp, size_t _Np>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _Tp* begin(_Tp (&__array)[_Np]) _NOEXCEPT {
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return __array;
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}
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template <class _Tp, size_t _Np>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _Tp* end(_Tp (&__array)[_Np]) _NOEXCEPT {
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return __array + _Np;
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}
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#if !defined(_LIBCPP_CXX03_LANG)
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template <class _Cp>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 auto begin(_Cp& __c) -> decltype(__c.begin()) {
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return __c.begin();
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}
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template <class _Cp>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 auto begin(const _Cp& __c) -> decltype(__c.begin()) {
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return __c.begin();
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}
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template <class _Cp>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 auto end(_Cp& __c) -> decltype(__c.end()) {
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return __c.end();
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}
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template <class _Cp>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 auto end(const _Cp& __c) -> decltype(__c.end()) {
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return __c.end();
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}
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# if _LIBCPP_STD_VER >= 14
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template <class _Cp>
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_LIBCPP_HIDE_FROM_ABI constexpr auto
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cbegin(const _Cp& __c) noexcept(noexcept(std::begin(__c))) -> decltype(std::begin(__c)) {
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return std::begin(__c);
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}
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template <class _Cp>
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_LIBCPP_HIDE_FROM_ABI constexpr auto cend(const _Cp& __c) noexcept(noexcept(std::end(__c))) -> decltype(std::end(__c)) {
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return std::end(__c);
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}
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# endif
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#else // defined(_LIBCPP_CXX03_LANG)
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template <class _Cp>
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_LIBCPP_HIDE_FROM_ABI typename _Cp::iterator begin(_Cp& __c) {
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return __c.begin();
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}
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template <class _Cp>
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_LIBCPP_HIDE_FROM_ABI typename _Cp::const_iterator begin(const _Cp& __c) {
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return __c.begin();
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}
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template <class _Cp>
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_LIBCPP_HIDE_FROM_ABI typename _Cp::iterator end(_Cp& __c) {
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return __c.end();
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}
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template <class _Cp>
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_LIBCPP_HIDE_FROM_ABI typename _Cp::const_iterator end(const _Cp& __c) {
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return __c.end();
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}
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#endif // !defined(_LIBCPP_CXX03_LANG)
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___ITERATOR_ACCESS_H
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