// Debugging iterator implementation (out of line) -*- C++ -*- // Copyright (C) 2011-2021 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // <http://www.gnu.org/licenses/>. /** @file debug/safe_local_iterator.tcc * This file is a GNU debug extension to the Standard C++ Library. */ #ifndef _GLIBCXX_DEBUG_SAFE_LOCAL_ITERATOR_TCC #define _GLIBCXX_DEBUG_SAFE_LOCAL_ITERATOR_TCC 1 namespace __gnu_debug { template<typename _Iterator, typename _Sequence> typename _Distance_traits<_Iterator>::__type _Safe_local_iterator<_Iterator, _Sequence>:: _M_get_distance_to(const _Safe_local_iterator& __rhs) const { if (base() == __rhs.base()) return { 0, __dp_exact }; if (_M_is_begin()) { if (__rhs._M_is_end()) return { _M_get_sequence()->bucket_size(bucket()), __dp_exact }; return { 1, __dp_sign }; } if (_M_is_end()) { if (__rhs._M_is_begin()) return { -_M_get_sequence()->bucket_size(bucket()), __dp_exact }; return { -1, __dp_sign }; } if (__rhs._M_is_begin()) return { -1, __dp_sign }; if (__rhs._M_is_end()) return { 1, __dp_sign }; return { 1, __dp_equality }; } template<typename _Iterator, typename _Sequence> bool _Safe_local_iterator<_Iterator, _Sequence>:: _M_valid_range(const _Safe_local_iterator& __rhs, std::pair<difference_type, _Distance_precision>& __dist) const { if (!_M_can_compare(__rhs)) return false; if (bucket() != __rhs.bucket()) return false; /* Determine if we can order the iterators without the help of the container */ __dist = _M_get_distance_to(__rhs); switch (__dist.second) { case __dp_equality: if (__dist.first == 0) return true; break; case __dp_sign: case __dp_exact: return __dist.first >= 0; } // Assume that this is a valid range; we can't check anything else return true; } } // namespace __gnu_debug #endif SIMPAN PERUBAHAN