libcxx/include/__iterator/reverse_access.h

   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_BEGIN_NAMESPACE_STD
  23
  24 #if !defined(_LIBCPP_CXX03_LANG)
  25
  26 #if _LIBCPP_STD_VER > 11
  27
  28 template <class _Tp, size_t _Np>
  29 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
  30 reverse_iterator<_Tp*> rbegin(_Tp (&__array)[_Np])
  31 {
  32     return reverse_iterator<_Tp*>(__array + _Np);
  33 }
  34
  35 template <class _Tp, size_t _Np>
  36 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
  37 reverse_iterator<_Tp*> rend(_Tp (&__array)[_Np])
  38 {
  39     return reverse_iterator<_Tp*>(__array);
  40 }
  41
  42 template <class _Ep>
  43 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
  44 reverse_iterator<const _Ep*> rbegin(initializer_list<_Ep> __il)
  45 {
  46     return reverse_iterator<const _Ep*>(__il.end());
  47 }
  48
  49 template <class _Ep>
  50 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
  51 reverse_iterator<const _Ep*> rend(initializer_list<_Ep> __il)
  52 {
  53     return reverse_iterator<const _Ep*>(__il.begin());
  54 }
  55
  56 template <class _Cp>
  57 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
  58 auto rbegin(_Cp& __c) -> decltype(__c.rbegin())
  59 {
  60     return __c.rbegin();
  61 }
  62
  63 template <class _Cp>
  64 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
  65 auto rbegin(const _Cp& __c) -> decltype(__c.rbegin())
  66 {
  67     return __c.rbegin();
  68 }
  69
  70 template <class _Cp>
  71 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
  72 auto rend(_Cp& __c) -> decltype(__c.rend())
  73 {
  74     return __c.rend();
  75 }
  76
  77 template <class _Cp>
  78 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
  79 auto rend(const _Cp& __c) -> decltype(__c.rend())
  80 {
  81     return __c.rend();
  82 }
  83
  84 template <class _Cp>
  85 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
  86 auto crbegin(const _Cp& __c) -> decltype(_VSTD::rbegin(__c))
  87 {
  88     return _VSTD::rbegin(__c);
  89 }
  90
  91 template <class _Cp>
  92 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
  93 auto crend(const _Cp& __c) -> decltype(_VSTD::rend(__c))
  94 {
  95     return _VSTD::rend(__c);
  96 }
  97
  98 #endif
  99
 100 #endif // !defined(_LIBCPP_CXX03_LANG)
 101
 102 _LIBCPP_END_NAMESPACE_STD
 103
 104 #endif // _LIBCPP___ITERATOR_REVERSE_ACCESS_H