cnorxz/orig/include/conversions.h
Christian Zimmermann 3463e6ceea wip...
2022-09-11 02:48:30 +02:00

122 lines
3.6 KiB
C++

#ifndef __cxz_conversions_h__
#define __cxz_conversions_h__
#include "cxz_array.h"
#include "slice.h"
namespace CNORXZ
{
namespace ConversionSizes
{
template <size_t N>
struct OrigSize
{
template <typename C, typename T>
struct FromTo
{
static void check() { static_assert( not N % (sizeof(T) / sizeof(C)), "conversion does not fit" ); }
static constexpr size_t SIZE = N * sizeof(T) / sizeof(C);
};
};
template <>
struct OrigSize<MUI>
{
template <typename C, typename T>
struct FromTo
{
static void check() {}
static constexpr size_t SIZE = MUI;
};
};
}
namespace
{
template <typename C, typename T, size_t N>
using SC = typename ConversionSizes::OrigSize<N>::template FromTo<C,T>;
template <typename C, typename T, class Range>
using SCR = SC<C,T,Range::SIZE>;
template <typename C, typename T, class Range>
using SCRR = GenSingleRange<typename Range::MetaType,SpaceType::NONE,SCR<C,T,Range>::SIZE>;
}
template <size_t N>
struct SubTuple
{
template <class RTP, class... Ranges>
static inline auto mk(const RTP& rtp, const Ranges&... rs)
-> decltype(SubTuple<N-1>::mk(rtp, std::get<N>(rtp), rs...))
{
return SubTuple<N-1>::mk(rtp, std::get<N>(rtp), rs...);
}
};
template <>
struct SubTuple<0>
{
template <class RTP, class... Ranges>
static inline auto mk(const RTP& rtp, const Ranges&... rs)
-> decltype(std::make_tuple(std::get<0>(rtp), rs...))
{
return std::make_tuple(std::get<0>(rtp), rs...);
}
};
template <class... Ranges>
using LastR = typename std::tuple_element<sizeof...(Ranges)-1,std::tuple<Ranges...>>::type;
template <typename C, typename T, class... Ranges>
auto rtcast(const std::tuple<std::shared_ptr<Ranges>...>& rtp)
-> decltype(std::tuple_cat(SubTuple<sizeof...(Ranges)-2>::mk(rtp),
std::make_tuple( std::dynamic_pointer_cast<SCRR<C,T,LastR<Ranges...>>>
( SCRR<C,T,LastR<Ranges...>>::factory().create() ) ) ))
{
return std::tuple_cat(SubTuple<sizeof...(Ranges)-2>::mk(rtp),
std::make_tuple( std::dynamic_pointer_cast<SCRR<C,T,LastR<Ranges...>>>
( SCRR<C,T,LastR<Ranges...>>::factory().create() ) ) );
}
template <typename T, class... Ranges>
inline Slice<T,Ranges...> rangeTpToSlice( const std::tuple<std::shared_ptr<Ranges>...>& rtp, T* data )
{
return Slice<T,Ranges...>(rtp, data);
}
template <typename T, class... Ranges>
inline ConstSlice<T,Ranges...> rangeTpToSlice( const std::tuple<std::shared_ptr<Ranges>...>& rtp, const T* data )
{
return ConstSlice<T,Ranges...>(rtp, data);
}
template <typename C, typename T, class... Ranges>
auto tcast(Array<T,Ranges...>& ma)
-> decltype(rangeTpToSlice
( rtcast<C,T>( ma.range()->space() ),
reinterpret_cast<C*>( ma.data() ) ))
{
// VCHECK(reinterpret_cast<std::intptr_t>(ma.data()) % 32);
//VCHECK(reinterpret_cast<std::intptr_t>(reinterpret_cast<C*>(ma.data())) % 32);
return rangeTpToSlice
( rtcast<C,T>( ma.range()->space() ),
reinterpret_cast<C*>( ma.data() ) );
}
template <typename C, typename T, class... Ranges>
auto tcast(const Array<T,Ranges...>& ma)
-> decltype(rangeTpToSlice
( rtcast<C,T>( ma.range()->space() ),
reinterpret_cast<const C*>( ma.data() ) ))
{
//VCHECK(reinterpret_cast<std::intptr_t>(ma.data()) % 32);
//VCHECK(reinterpret_cast<std::intptr_t>(reinterpret_cast<C*>(ma.data())) % 32);
return rangeTpToSlice
( rtcast<C,T>( ma.range()->space() ),
reinterpret_cast<const C*>( ma.data() ) );
}
}
#endif