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https://github.com/RetroDECK/Duckstation.git
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99 lines
3.2 KiB
C++
99 lines
3.2 KiB
C++
// Sourced from https://github.com/BreadFish64/ScaleFish/blob/master/common/dimensional_array.hpp
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// Copyright (c) 2020 BreadFish64
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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 <array>
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#include <cstdint>
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#include <type_traits>
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namespace detail {
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template<typename T, std::size_t rank, std::size_t... sizes>
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struct DimensionalArrayExplicitRank;
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// Workaround for MSVC
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#if defined(_MSC_VER)
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template<std::size_t rank, std::size_t... sizes>
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struct GetRankSize
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{
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static constexpr std::size_t size_array[] = {sizes...};
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static constexpr std::size_t value = size_array[rank - 1];
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};
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template<typename T, std::size_t rank, std::size_t... sizes>
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using GetArrayImplType =
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std::array<std::conditional_t<rank == 1, T, DimensionalArrayExplicitRank<T, rank - 1, sizes...>>,
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GetRankSize<rank, sizes...>::value>;
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#else
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template<std::size_t rank, std::size_t... sizes>
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constexpr std::size_t GetRankSize()
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{
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constexpr std::size_t size_array[] = {sizes...};
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return size_array[rank - 1];
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}
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template<typename T, std::size_t rank, std::size_t... sizes>
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using GetArrayImplType =
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std::array<std::conditional_t<rank == 1, T, DimensionalArrayExplicitRank<T, rank - 1, sizes...>>,
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GetRankSize<rank, sizes...>()>;
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#endif
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template<typename T, std::size_t rank_param, std::size_t... sizes>
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struct DimensionalArrayExplicitRank : public GetArrayImplType<T, rank_param, sizes...>
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{
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static constexpr std::size_t rank = rank_param;
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static_assert(rank > 0, "Attempted to create dimensional array with rank less than 1");
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using ArrayImplType = GetArrayImplType<T, rank, sizes...>;
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using ArrayImplType::ArrayImplType;
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template<typename Callable>
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void enumerate(const Callable& f)
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{
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for (auto& it : *this)
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{
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if constexpr (rank == 1)
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f(it);
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else
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it.enumerate(f);
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}
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}
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template<typename Callable>
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void enumerate(const Callable& f) const
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{
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for (const auto& it : *this)
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{
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if constexpr (rank == 1)
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f(it);
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else
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it.enumerate(f);
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}
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}
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};
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} // namespace detail
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template<typename T, std::size_t... sizes>
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using DimensionalArray = detail::DimensionalArrayExplicitRank<T, sizeof...(sizes), sizes...>;
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