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/* A range adapter that wraps begin / end iterators.
Copyright (C) 2021-2023 Free Software Foundation, Inc.
This file is part of GDB.
This program 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 of the License, or
(at your option) any later version.
This program 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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef GDBSUPPORT_ITERATOR_RANGE_H
#define GDBSUPPORT_ITERATOR_RANGE_H
/* A wrapper that allows using ranged for-loops on a range described by two
iterators. */
template <typename IteratorType>
struct iterator_range
{
using iterator = IteratorType;
/* Create an iterator_range using BEGIN as the begin iterator.
Assume that the end iterator can be default-constructed. */
template <typename... Args>
iterator_range (Args &&...args)
: m_begin (std::forward<Args> (args)...)
{}
/* Create an iterator range using explicit BEGIN and END iterators. */
template <typename... Args>
iterator_range (IteratorType begin, IteratorType end)
: m_begin (std::move (begin)), m_end (std::move (end))
{}
/* Need these as the variadic constructor would be a better match
otherwise. */
iterator_range (iterator_range &) = default;
iterator_range (const iterator_range &) = default;
iterator_range (iterator_range &&) = default;
IteratorType begin () const
{ return m_begin; }
IteratorType end () const
{ return m_end; }
/* The number of items in this iterator_range. */
std::size_t size () const
{ return std::distance (m_begin, m_end); }
private:
IteratorType m_begin, m_end;
};
#endif /* GDBSUPPORT_ITERATOR_RANGE_H */
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