Duckstation/src/common/dimensional_array.h
Silent 803b68b279
Common/DimensionalArray: Re-revert the workaround
VS16.10 fixes the regression and bumps up _MSC_VER,
so make only VS2017 and VS16.9 use the workaround
2021-05-25 19:00:40 +02:00

99 lines
3.2 KiB
C++

// Sourced from https://github.com/BreadFish64/ScaleFish/blob/master/common/dimensional_array.hpp
// Copyright (c) 2020 BreadFish64
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#pragma once
#include <array>
#include <cstdint>
#include <type_traits>
namespace detail {
template<typename T, std::size_t rank, std::size_t... sizes>
struct DimensionalArrayExplicitRank;
// Workaround for VS2017 & VS 16.9.x
#if defined(_MSC_VER) && (_MSC_VER < 1920 || _MSC_VER == 1928)
template<std::size_t rank, std::size_t... sizes>
struct GetRankSize
{
static constexpr std::size_t size_array[] = {sizes...};
static constexpr std::size_t value = size_array[rank - 1];
};
template<typename T, std::size_t rank, std::size_t... sizes>
using GetArrayImplType =
std::array<std::conditional_t<rank == 1, T, DimensionalArrayExplicitRank<T, rank - 1, sizes...>>,
GetRankSize<rank, sizes...>::value>;
#else
template<std::size_t rank, std::size_t... sizes>
constexpr std::size_t GetRankSize()
{
constexpr std::size_t size_array[] = {sizes...};
return size_array[rank - 1];
}
template<typename T, std::size_t rank, std::size_t... sizes>
using GetArrayImplType =
std::array<std::conditional_t<rank == 1, T, DimensionalArrayExplicitRank<T, rank - 1, sizes...>>,
GetRankSize<rank, sizes...>()>;
#endif
template<typename T, std::size_t rank_param, std::size_t... sizes>
struct DimensionalArrayExplicitRank : public GetArrayImplType<T, rank_param, sizes...>
{
static constexpr std::size_t rank = rank_param;
static_assert(rank > 0, "Attempted to create dimensional array with rank less than 1");
using ArrayImplType = GetArrayImplType<T, rank, sizes...>;
using ArrayImplType::ArrayImplType;
template<typename Callable>
void enumerate(const Callable& f)
{
for (auto& it : *this)
{
if constexpr (rank == 1)
f(it);
else
it.enumerate(f);
}
}
template<typename Callable>
void enumerate(const Callable& f) const
{
for (const auto& it : *this)
{
if constexpr (rank == 1)
f(it);
else
it.enumerate(f);
}
}
};
} // namespace detail
template<typename T, std::size_t... sizes>
using DimensionalArray = detail::DimensionalArrayExplicitRank<T, sizeof...(sizes), sizes...>;