1 /* A range adapter that wraps begin / end iterators. 2 Copyright (C) 2021-2024 Free Software Foundation, Inc. 3 4 This file is part of GDB. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program 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 You should have received a copy of the GNU General Public License 17 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 18 19 #ifndef GDBSUPPORT_ITERATOR_RANGE_H 20 #define GDBSUPPORT_ITERATOR_RANGE_H 21 22 /* A wrapper that allows using ranged for-loops on a range described by two 23 iterators. */ 24 25 template <typename IteratorType> 26 struct iterator_range 27 { 28 using iterator = IteratorType; 29 30 /* Create an iterator_range using BEGIN as the begin iterator. 31 32 Assume that the end iterator can be default-constructed. */ 33 template <typename... Args> 34 iterator_range (Args &&...args) 35 : m_begin (std::forward<Args> (args)...) 36 {} 37 38 /* Create an iterator range using explicit BEGIN and END iterators. */ 39 template <typename... Args> 40 iterator_range (IteratorType begin, IteratorType end) 41 : m_begin (std::move (begin)), m_end (std::move (end)) 42 {} 43 44 /* Need these as the variadic constructor would be a better match 45 otherwise. */ 46 iterator_range (iterator_range &) = default; 47 iterator_range (const iterator_range &) = default; 48 iterator_range (iterator_range &&) = default; 49 50 IteratorType begin () const 51 { return m_begin; } 52 53 IteratorType end () const 54 { return m_end; } 55 56 /* The number of items in this iterator_range. */ 57 std::size_t size () const 58 { return std::distance (m_begin, m_end); } 59 60 private: 61 IteratorType m_begin, m_end; 62 }; 63 64 #endif /* GDBSUPPORT_ITERATOR_RANGE_H */ 65