mirror of https://github.com/odrling/Aegisub
53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
// Copyright (c) 2014, Thomas Goyne <plorkyeran@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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// Aegisub Project http://www.aegisub.org/
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#include <boost/range/adaptor/transformed.hpp>
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namespace agi {
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namespace address_of_detail {
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using namespace boost::adaptors;
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// Tag type to select the operator| overload
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struct address_of_tag_type { };
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template<typename Iterator>
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struct take_address_of {
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using result_type = typename std::iterator_traits<Iterator>::pointer;
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using input_type = typename std::iterator_traits<Iterator>::reference;
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result_type operator()(input_type v) const { return &v; }
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};
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template<typename Rng>
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auto operator|(Rng&& r, address_of_tag_type)
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-> boost::transformed_range<take_address_of<typename Rng::iterator>, Rng>
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{
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return r | transformed(take_address_of<typename Rng::iterator>());
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}
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template<typename Rng>
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auto operator|(Rng& r, address_of_tag_type)
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-> boost::transformed_range<take_address_of<typename Rng::iterator>, Rng>
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{
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return r | transformed(take_address_of<typename Rng::iterator>());
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}
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}
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namespace {
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const auto address_of = address_of_detail::address_of_tag_type{};
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}
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}
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