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-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef _LIBCPP___ITERATOR_REVERSE_ACCESS_H 11 #define _LIBCPP___ITERATOR_REVERSE_ACCESS_H 12 13 #include <__config> 14 #include <__iterator/reverse_iterator.h> 15 #include <cstddef> 16 #include <initializer_list> 17 18 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 19 #pragma GCC system_header 20 #endif 21 22 _LIBCPP_PUSH_MACROS 23 #include <__undef_macros> 24 25 _LIBCPP_BEGIN_NAMESPACE_STD 26 27 #if !defined(_LIBCPP_CXX03_LANG) 28 29 #if _LIBCPP_STD_VER > 11 30 31 template <class _Tp, size_t _Np> 32 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 33 reverse_iterator<_Tp*> rbegin(_Tp (&__array)[_Np]) 34 { 35 return reverse_iterator<_Tp*>(__array + _Np); 36 } 37 38 template <class _Tp, size_t _Np> 39 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 40 reverse_iterator<_Tp*> rend(_Tp (&__array)[_Np]) 41 { 42 return reverse_iterator<_Tp*>(__array); 43 } 44 45 template <class _Ep> 46 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 47 reverse_iterator<const _Ep*> rbegin(initializer_list<_Ep> __il) 48 { 49 return reverse_iterator<const _Ep*>(__il.end()); 50 } 51 52 template <class _Ep> 53 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 54 reverse_iterator<const _Ep*> rend(initializer_list<_Ep> __il) 55 { 56 return reverse_iterator<const _Ep*>(__il.begin()); 57 } 58 59 template <class _Cp> 60 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 61 auto rbegin(_Cp& __c) -> decltype(__c.rbegin()) 62 { 63 return __c.rbegin(); 64 } 65 66 template <class _Cp> 67 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 68 auto rbegin(const _Cp& __c) -> decltype(__c.rbegin()) 69 { 70 return __c.rbegin(); 71 } 72 73 template <class _Cp> 74 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 75 auto rend(_Cp& __c) -> decltype(__c.rend()) 76 { 77 return __c.rend(); 78 } 79 80 template <class _Cp> 81 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 82 auto rend(const _Cp& __c) -> decltype(__c.rend()) 83 { 84 return __c.rend(); 85 } 86 87 template <class _Cp> 88 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 89 auto crbegin(const _Cp& __c) -> decltype(_VSTD::rbegin(__c)) 90 { 91 return _VSTD::rbegin(__c); 92 } 93 94 template <class _Cp> 95 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 96 auto crend(const _Cp& __c) -> decltype(_VSTD::rend(__c)) 97 { 98 return _VSTD::rend(__c); 99 } 100 101 #endif 102 103 #endif // !defined(_LIBCPP_CXX03_LANG) 104 105 _LIBCPP_END_NAMESPACE_STD 106 107 _LIBCPP_POP_MACROS 108 109 #endif // _LIBCPP___ITERATOR_REVERSE_ACCESS_H 110