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+/* vim: set sw=4 sts=4 et foldmethod=syntax : */
+/*
+ * Copyright (c) 2014 Saleem Abdulrasool
+ *
+ * This file is part of the Paludis package manager. Paludis is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU General
+ * Public License version 2, as published by the Free Software Foundation.
+ *
+ * Paludis 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, write to the Free Software Foundation, Inc., 59 Temple
+ * Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef PALUDIS_GUARD_PALUDIS_UTIL_ITERATOR_RANGE_HH
+#define PALUDIS_GUARD_PALUDIS_UTIL_ITERATOR_RANGE_HH 1
+
+#include <iterator>
+#include <utility>
+
+namespace paludis
+{
+ template <typename Iterator_>
+ class IteratorRange
+ {
+ private:
+ Iterator_ _begin, _end;
+
+ public:
+ // TODO(compnerd) use SFINAE to ensure that the container's
+ // iterators match the range's iterator
+ template <typename Container_>
+ IteratorRange(Container_ && container)
+ : _begin(std::begin(container)), _end(std::end(container))
+ {
+ }
+
+ IteratorRange(Iterator_ begin, Iterator_ end)
+ : _begin(std::move(begin)), _end(std::move(end))
+ {
+ }
+
+ Iterator_ begin() const
+ {
+ return _begin;
+ }
+
+ Iterator_ end() const
+ {
+ return _end;
+ }
+
+ size_t size() const
+ {
+ return std::distance(_end, _begin);
+ }
+ };
+
+ template <typename Iterator_>
+ IteratorRange<Iterator_> make_range(Iterator_ begin, Iterator_ end)
+ {
+ return IteratorRange<Iterator_>(std::move(begin), std::move(end));
+ }
+
+ template <typename Iterator_>
+ IteratorRange<Iterator_> make_range(std::pair<Iterator_, Iterator_> range)
+ {
+ return IteratorRange<Iterator_>(std::move(range.first),
+ std::move(range.second));
+ }
+}
+
+#endif
+