| 1 | // Copyright (C) 2019 T. Zachary Laine |
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| 2 | // |
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| 3 | // Distributed under the Boost Software License, Version 1.0. (See |
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| 4 | // accompanying file LICENSE_1_0.txt or copy at |
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| 5 | // http://www.boost.org/LICENSE_1_0.txt) |
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| 6 | #ifndef BOOST_STL_INTERFACES_VIEW_TESTING_HPP |
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| 7 | #define BOOST_STL_INTERFACES_VIEW_TESTING_HPP |
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| 8 | |
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| 9 | #include <boost/stl_interfaces/view_interface.hpp> |
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| 10 | |
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| 11 | |
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| 12 | template< |
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| 13 | typename Iterator, |
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| 14 | typename Sentinel, |
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| 15 | boost::stl_interfaces::element_layout Contiguity> |
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| 16 | struct subrange |
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| 17 | : boost::stl_interfaces:: |
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| 18 | view_interface<subrange<Iterator, Sentinel, Contiguity>, Contiguity> |
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| 19 | { |
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| 20 | subrange() = default; |
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| 21 | constexpr subrange(Iterator it, Sentinel s) : first_(it), last_(s) {} |
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| 22 | |
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| 23 | constexpr auto begin() const { return first_; } |
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| 24 | constexpr auto end() const { return last_; } |
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| 25 | |
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| 26 | private: |
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| 27 | Iterator first_; |
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| 28 | Sentinel last_; |
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| 29 | }; |
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| 30 | |
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| 31 | template< |
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| 32 | boost::stl_interfaces::element_layout Contiguity, |
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| 33 | typename Iterator, |
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| 34 | typename Sentinel> |
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| 35 | auto range(Iterator i, Sentinel s) |
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| 36 | { |
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| 37 | return subrange<Iterator, Sentinel, Contiguity>(i, s); |
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| 38 | } |
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| 39 | |
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| 40 | #endif |
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| 41 | |
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