forked from mpusz/mp-units
69 lines
2.5 KiB
C++
69 lines
2.5 KiB
C++
// The MIT License (MIT)
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//
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// Copyright (c) 2018 Mateusz Pusz
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#pragma once
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#include <units/bits/basic_concepts.h>
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#include <units/bits/external/downcasting.h>
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namespace units {
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template<Dimension D>
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struct dynamic_origin;
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namespace detail {
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template<typename K, Dimension D>
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struct _kind_base : downcast_base<_kind_base<K, D>> {
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using base_kind = K;
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using dimension = D;
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};
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template<Kind K, PointOrigin O>
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struct _point_kind_base : downcast_base<_point_kind_base<K, O>> {
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using base_kind = K;
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using dimension = typename K::dimension;
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using origin = O;
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};
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} // namespace detail
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template<Kind K, Dimension D>
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requires Kind<downcast<detail::_kind_base<typename K::base_kind, D>>>
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using downcast_kind = downcast<detail::_kind_base<typename K::base_kind, D>>;
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template<Kind K, PointOrigin O = dynamic_origin<typename K::dimension>>
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requires PointKind<downcast<detail::_point_kind_base<K, O>>>
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using downcast_point_kind = downcast<detail::_point_kind_base<K, O>>;
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template<typename K, Dimension D>
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struct kind : downcast_dispatch<K, detail::_kind_base<K, D>> {};
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template<typename DK, Dimension D, Kind BK>
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requires std::same_as<BK, typename BK::base_kind>
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struct derived_kind : downcast_dispatch<DK, detail::_kind_base<BK, D>> {};
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template<typename DPK, Kind BK, PointOrigin O = dynamic_origin<typename BK::dimension>>
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struct point_kind : downcast_dispatch<DPK, detail::_point_kind_base<BK, O>> {};
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} // namespace units
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