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The C and C++ Include Header Files
cat -n /usr/include/c++/15/experimental/bits/string_view.tcc
1 // Components for manipulating non-owning sequences of characters -*- C++ -*- 2 3 // Copyright (C) 2013-2025 Free Software Foundation, Inc. 4 // 5 // This file is part of the GNU ISO C++ Library. This library is free 6 // software; you can redistribute it and/or modify it under the 7 // terms of the GNU General Public License as published by the 8 // Free Software Foundation; either version 3, or (at your option) 9 // any later version. 10 11 // This library is distributed in the hope that it will be useful, 12 // but WITHOUT ANY WARRANTY; without even the implied warranty of 13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 // GNU General Public License for more details. 15 16 // Under Section 7 of GPL version 3, you are granted additional 17 // permissions described in the GCC Runtime Library Exception, version 18 // 3.1, as published by the Free Software Foundation. 19 20 // You should have received a copy of the GNU General Public License and 21 // a copy of the GCC Runtime Library Exception along with this program; 22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 // <http://www.gnu.org/licenses/>. 24 25 /** @file experimental/bits/string_view.tcc 26 * This is an internal header file, included by other library headers. 27 * Do not attempt to use it directly. @headername{experimental/string_view} 28 */ 29 30 // 31 // N3762 basic_string_view library 32 // 33 34 #ifndef _GLIBCXX_EXPERIMENTAL_STRING_VIEW_TCC 35 #define _GLIBCXX_EXPERIMENTAL_STRING_VIEW_TCC 1 36 37 #ifdef _GLIBCXX_SYSHDR 38 #pragma GCC system_header 39 #endif 40 41 #if __cplusplus >= 201402L 42 43 namespace std _GLIBCXX_VISIBILITY(default) 44 { 45 _GLIBCXX_BEGIN_NAMESPACE_VERSION 46 47 namespace experimental 48 { 49 inline namespace fundamentals_v1 50 { 51 template<typename _CharT, typename _Traits> 52 constexpr typename basic_string_view<_CharT, _Traits>::size_type 53 basic_string_view<_CharT, _Traits>:: 54 find(const _CharT* __str, size_type __pos, size_type __n) const noexcept 55 { 56 __glibcxx_requires_string_len(__str, __n); 57 58 if (__n == 0) 59 return __pos <= this->_M_len ? __pos : npos; 60 61 if (__n <= this->_M_len) 62 { 63 for (; __pos <= this->_M_len - __n; ++__pos) 64 if (traits_type::eq(this->_M_str[__pos], __str[0]) 65 && traits_type::compare(this->_M_str + __pos + 1, 66 __str + 1, __n - 1) == 0) 67 return __pos; 68 } 69 return npos; 70 } 71 72 template<typename _CharT, typename _Traits> 73 constexpr typename basic_string_view<_CharT, _Traits>::size_type 74 basic_string_view<_CharT, _Traits>:: 75 find(_CharT __c, size_type __pos) const noexcept 76 { 77 size_type __ret = npos; 78 if (__pos < this->_M_len) 79 { 80 const size_type __n = this->_M_len - __pos; 81 const _CharT* __p = traits_type::find(this->_M_str + __pos, __n, __c); 82 if (__p) 83 __ret = __p - this->_M_str; 84 } 85 return __ret; 86 } 87 88 template<typename _CharT, typename _Traits> 89 constexpr typename basic_string_view<_CharT, _Traits>::size_type 90 basic_string_view<_CharT, _Traits>:: 91 rfind(const _CharT* __str, size_type __pos, size_type __n) const noexcept 92 { 93 __glibcxx_requires_string_len(__str, __n); 94 95 if (__n <= this->_M_len) 96 { 97 __pos = std::min(size_type(this->_M_len - __n), __pos); 98 do 99 { 100 if (traits_type::compare(this->_M_str + __pos, __str, __n) == 0) 101 return __pos; 102 } 103 while (__pos-- > 0); 104 } 105 return npos; 106 } 107 108 template<typename _CharT, typename _Traits> 109 constexpr typename basic_string_view<_CharT, _Traits>::size_type 110 basic_string_view<_CharT, _Traits>:: 111 rfind(_CharT __c, size_type __pos) const noexcept 112 { 113 size_type __size = this->_M_len; 114 if (__size > 0) 115 { 116 if (--__size > __pos) 117 __size = __pos; 118 for (++__size; __size-- > 0; ) 119 if (traits_type::eq(this->_M_str[__size], __c)) 120 return __size; 121 } 122 return npos; 123 } 124 125 template<typename _CharT, typename _Traits> 126 constexpr typename basic_string_view<_CharT, _Traits>::size_type 127 basic_string_view<_CharT, _Traits>:: 128 find_first_of(const _CharT* __str, size_type __pos, size_type __n) const 129 { 130 __glibcxx_requires_string_len(__str, __n); 131 for (; __n && __pos < this->_M_len; ++__pos) 132 { 133 const _CharT* __p = traits_type::find(__str, __n, 134 this->_M_str[__pos]); 135 if (__p) 136 return __pos; 137 } 138 return npos; 139 } 140 141 template<typename _CharT, typename _Traits> 142 constexpr typename basic_string_view<_CharT, _Traits>::size_type 143 basic_string_view<_CharT, _Traits>:: 144 find_last_of(const _CharT* __str, size_type __pos, size_type __n) const 145 { 146 __glibcxx_requires_string_len(__str, __n); 147 size_type __size = this->size(); 148 if (__size && __n) 149 { 150 if (--__size > __pos) 151 __size = __pos; 152 do 153 { 154 if (traits_type::find(__str, __n, this->_M_str[__size])) 155 return __size; 156 } 157 while (__size-- != 0); 158 } 159 return npos; 160 } 161 162 template<typename _CharT, typename _Traits> 163 constexpr typename basic_string_view<_CharT, _Traits>::size_type 164 basic_string_view<_CharT, _Traits>:: 165 find_first_not_of(const _CharT* __str, size_type __pos, size_type __n) const 166 { 167 __glibcxx_requires_string_len(__str, __n); 168 for (; __pos < this->_M_len; ++__pos) 169 if (!traits_type::find(__str, __n, this->_M_str[__pos])) 170 return __pos; 171 return npos; 172 } 173 174 template<typename _CharT, typename _Traits> 175 constexpr typename basic_string_view<_CharT, _Traits>::size_type 176 basic_string_view<_CharT, _Traits>:: 177 find_first_not_of(_CharT __c, size_type __pos) const noexcept 178 { 179 for (; __pos < this->_M_len; ++__pos) 180 if (!traits_type::eq(this->_M_str[__pos], __c)) 181 return __pos; 182 return npos; 183 } 184 185 template<typename _CharT, typename _Traits> 186 constexpr typename basic_string_view<_CharT, _Traits>::size_type 187 basic_string_view<_CharT, _Traits>:: 188 find_last_not_of(const _CharT* __str, size_type __pos, size_type __n) const 189 { 190 __glibcxx_requires_string_len(__str, __n); 191 size_type __size = this->_M_len; 192 if (__size) 193 { 194 if (--__size > __pos) 195 __size = __pos; 196 do 197 { 198 if (!traits_type::find(__str, __n, this->_M_str[__size])) 199 return __size; 200 } 201 while (__size--); 202 } 203 return npos; 204 } 205 206 template<typename _CharT, typename _Traits> 207 constexpr typename basic_string_view<_CharT, _Traits>::size_type 208 basic_string_view<_CharT, _Traits>:: 209 find_last_not_of(_CharT __c, size_type __pos) const noexcept 210 { 211 size_type __size = this->_M_len; 212 if (__size) 213 { 214 if (--__size > __pos) 215 __size = __pos; 216 do 217 { 218 if (!traits_type::eq(this->_M_str[__size], __c)) 219 return __size; 220 } 221 while (__size--); 222 } 223 return npos; 224 } 225 } // namespace fundamentals_v1 226 } // namespace experimental 227 228 _GLIBCXX_END_NAMESPACE_VERSION 229 } // namespace std 230 231 #endif // __cplusplus <= 201103L 232 233 #endif // _GLIBCXX_EXPERIMENTAL_STRING_VIEW_TCC
