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1// -*- C++ -*-2//===----------------------------------------------------------------------===//3//4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.5// See https://llvm.org/LICENSE.txt for license information.6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception7//8//===----------------------------------------------------------------------===//9 10#ifndef _LIBCPP___ITERATOR_ACCESS_H11#define _LIBCPP___ITERATOR_ACCESS_H12 13#include <__config>14#include <__cstddef/size_t.h>15 16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)17# pragma GCC system_header18#endif19 20_LIBCPP_BEGIN_NAMESPACE_STD21 22template <class _Tp, size_t _Np>23_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _Tp* begin(_Tp (&__array)[_Np]) _NOEXCEPT {24 return __array;25}26 27template <class _Tp, size_t _Np>28_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _Tp* end(_Tp (&__array)[_Np]) _NOEXCEPT {29 return __array + _Np;30}31 32#if !defined(_LIBCPP_CXX03_LANG)33 34template <class _Cp>35_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 auto begin(_Cp& __c) -> decltype(__c.begin()) {36 return __c.begin();37}38 39template <class _Cp>40_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 auto begin(const _Cp& __c) -> decltype(__c.begin()) {41 return __c.begin();42}43 44template <class _Cp>45_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 auto end(_Cp& __c) -> decltype(__c.end()) {46 return __c.end();47}48 49template <class _Cp>50_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 auto end(const _Cp& __c) -> decltype(__c.end()) {51 return __c.end();52}53 54# if _LIBCPP_STD_VER >= 1455 56template <class _Cp>57_LIBCPP_HIDE_FROM_ABI constexpr auto58cbegin(const _Cp& __c) noexcept(noexcept(std::begin(__c))) -> decltype(std::begin(__c)) {59 return std::begin(__c);60}61 62template <class _Cp>63_LIBCPP_HIDE_FROM_ABI constexpr auto cend(const _Cp& __c) noexcept(noexcept(std::end(__c))) -> decltype(std::end(__c)) {64 return std::end(__c);65}66 67# endif68 69#else // defined(_LIBCPP_CXX03_LANG)70 71template <class _Cp>72_LIBCPP_HIDE_FROM_ABI typename _Cp::iterator begin(_Cp& __c) {73 return __c.begin();74}75 76template <class _Cp>77_LIBCPP_HIDE_FROM_ABI typename _Cp::const_iterator begin(const _Cp& __c) {78 return __c.begin();79}80 81template <class _Cp>82_LIBCPP_HIDE_FROM_ABI typename _Cp::iterator end(_Cp& __c) {83 return __c.end();84}85 86template <class _Cp>87_LIBCPP_HIDE_FROM_ABI typename _Cp::const_iterator end(const _Cp& __c) {88 return __c.end();89}90 91#endif // !defined(_LIBCPP_CXX03_LANG)92 93_LIBCPP_END_NAMESPACE_STD94 95#endif // _LIBCPP___ITERATOR_ACCESS_H96