libstdc++
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00001 // <range_access.h> -*- C++ -*- 00002 00003 // Copyright (C) 2010-2015 Free Software Foundation, Inc. 00004 // 00005 // This file is part of the GNU ISO C++ Library. This library is free 00006 // software; you can redistribute it and/or modify it under the 00007 // terms of the GNU General Public License as published by the 00008 // Free Software Foundation; either version 3, or (at your option) 00009 // any later version. 00010 00011 // This library is distributed in the hope that it will be useful, 00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 // GNU General Public License for more details. 00015 00016 // Under Section 7 of GPL version 3, you are granted additional 00017 // permissions described in the GCC Runtime Library Exception, version 00018 // 3.1, as published by the Free Software Foundation. 00019 00020 // You should have received a copy of the GNU General Public License and 00021 // a copy of the GCC Runtime Library Exception along with this program; 00022 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 00023 // <http://www.gnu.org/licenses/>. 00024 00025 /** @file bits/range_access.h 00026 * This is an internal header file, included by other library headers. 00027 * Do not attempt to use it directly. @headername{iterator} 00028 */ 00029 00030 #ifndef _GLIBCXX_RANGE_ACCESS_H 00031 #define _GLIBCXX_RANGE_ACCESS_H 1 00032 00033 #pragma GCC system_header 00034 00035 #if __cplusplus >= 201103L 00036 #include <initializer_list> 00037 namespace std _GLIBCXX_VISIBILITY(default) 00038 { 00039 _GLIBCXX_BEGIN_NAMESPACE_VERSION 00040 00041 /** 00042 * @brief Return an iterator pointing to the first element of 00043 * the container. 00044 * @param __cont Container. 00045 */ 00046 template<class _Container> 00047 inline auto 00048 begin(_Container& __cont) -> decltype(__cont.begin()) 00049 { return __cont.begin(); } 00050 00051 /** 00052 * @brief Return an iterator pointing to the first element of 00053 * the const container. 00054 * @param __cont Container. 00055 */ 00056 template<class _Container> 00057 inline auto 00058 begin(const _Container& __cont) -> decltype(__cont.begin()) 00059 { return __cont.begin(); } 00060 00061 /** 00062 * @brief Return an iterator pointing to one past the last element of 00063 * the container. 00064 * @param __cont Container. 00065 */ 00066 template<class _Container> 00067 inline auto 00068 end(_Container& __cont) -> decltype(__cont.end()) 00069 { return __cont.end(); } 00070 00071 /** 00072 * @brief Return an iterator pointing to one past the last element of 00073 * the const container. 00074 * @param __cont Container. 00075 */ 00076 template<class _Container> 00077 inline auto 00078 end(const _Container& __cont) -> decltype(__cont.end()) 00079 { return __cont.end(); } 00080 00081 /** 00082 * @brief Return an iterator pointing to the first element of the array. 00083 * @param __arr Array. 00084 */ 00085 template<class _Tp, size_t _Nm> 00086 inline _GLIBCXX14_CONSTEXPR _Tp* 00087 begin(_Tp (&__arr)[_Nm]) 00088 { return __arr; } 00089 00090 /** 00091 * @brief Return an iterator pointing to one past the last element 00092 * of the array. 00093 * @param __arr Array. 00094 */ 00095 template<class _Tp, size_t _Nm> 00096 inline _GLIBCXX14_CONSTEXPR _Tp* 00097 end(_Tp (&__arr)[_Nm]) 00098 { return __arr + _Nm; } 00099 00100 #if __cplusplus >= 201402L 00101 /** 00102 * @brief Return an iterator pointing to the first element of 00103 * the const container. 00104 * @param __cont Container. 00105 */ 00106 template<class _Container> 00107 inline constexpr auto 00108 cbegin(const _Container& __cont) noexcept(noexcept(std::begin(__cont))) 00109 -> decltype(std::begin(__cont)) 00110 { return std::begin(__cont); } 00111 00112 /** 00113 * @brief Return an iterator pointing to one past the last element of 00114 * the const container. 00115 * @param __cont Container. 00116 */ 00117 template<class _Container> 00118 inline constexpr auto 00119 cend(const _Container& __cont) noexcept(noexcept(std::end(__cont))) 00120 -> decltype(std::end(__cont)) 00121 { return std::end(__cont); } 00122 00123 /** 00124 * @brief Return a reverse iterator pointing to the last element of 00125 * the container. 00126 * @param __cont Container. 00127 */ 00128 template<class _Container> 00129 inline auto 00130 rbegin(_Container& __cont) -> decltype(__cont.rbegin()) 00131 { return __cont.rbegin(); } 00132 00133 /** 00134 * @brief Return a reverse iterator pointing to the last element of 00135 * the const container. 00136 * @param __cont Container. 00137 */ 00138 template<class _Container> 00139 inline auto 00140 rbegin(const _Container& __cont) -> decltype(__cont.rbegin()) 00141 { return __cont.rbegin(); } 00142 00143 /** 00144 * @brief Return a reverse iterator pointing one past the first element of 00145 * the container. 00146 * @param __cont Container. 00147 */ 00148 template<class _Container> 00149 inline auto 00150 rend(_Container& __cont) -> decltype(__cont.rend()) 00151 { return __cont.rend(); } 00152 00153 /** 00154 * @brief Return a reverse iterator pointing one past the first element of 00155 * the const container. 00156 * @param __cont Container. 00157 */ 00158 template<class _Container> 00159 inline auto 00160 rend(const _Container& __cont) -> decltype(__cont.rend()) 00161 { return __cont.rend(); } 00162 00163 /** 00164 * @brief Return a reverse iterator pointing to the last element of 00165 * the array. 00166 * @param __arr Array. 00167 */ 00168 template<class _Tp, size_t _Nm> 00169 inline reverse_iterator<_Tp*> 00170 rbegin(_Tp (&__arr)[_Nm]) 00171 { return reverse_iterator<_Tp*>(__arr + _Nm); } 00172 00173 /** 00174 * @brief Return a reverse iterator pointing one past the first element of 00175 * the array. 00176 * @param __arr Array. 00177 */ 00178 template<class _Tp, size_t _Nm> 00179 inline reverse_iterator<_Tp*> 00180 rend(_Tp (&__arr)[_Nm]) 00181 { return reverse_iterator<_Tp*>(__arr); } 00182 00183 /** 00184 * @brief Return a reverse iterator pointing to the last element of 00185 * the initializer_list. 00186 * @param __il initializer_list. 00187 */ 00188 template<class _Tp> 00189 inline reverse_iterator<const _Tp*> 00190 rbegin(initializer_list<_Tp> __il) 00191 { return reverse_iterator<const _Tp*>(__il.end()); } 00192 00193 /** 00194 * @brief Return a reverse iterator pointing one past the first element of 00195 * the initializer_list. 00196 * @param __il initializer_list. 00197 */ 00198 template<class _Tp> 00199 inline reverse_iterator<const _Tp*> 00200 rend(initializer_list<_Tp> __il) 00201 { return reverse_iterator<const _Tp*>(__il.begin()); } 00202 00203 /** 00204 * @brief Return a reverse iterator pointing to the last element of 00205 * the const container. 00206 * @param __cont Container. 00207 */ 00208 template<class _Container> 00209 inline auto 00210 crbegin(const _Container& __cont) -> decltype(std::rbegin(__cont)) 00211 { return std::rbegin(__cont); } 00212 00213 /** 00214 * @brief Return a reverse iterator pointing one past the first element of 00215 * the const container. 00216 * @param __cont Container. 00217 */ 00218 template<class _Container> 00219 inline auto 00220 crend(const _Container& __cont) -> decltype(std::rend(__cont)) 00221 { return std::rend(__cont); } 00222 00223 #endif // C++14 00224 00225 _GLIBCXX_END_NAMESPACE_VERSION 00226 } // namespace 00227 00228 #endif // C++11 00229 00230 #endif // _GLIBCXX_RANGE_ACCESS_H