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CorradeStridedArrayView.h
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/*
Corrade::Containers::StridedArrayView
— multidimensional strided array view
https://doc.magnum.graphics/corrade/classCorrade_1_1Containers_1_1StridedArrayView.html
Depends on CorradeArrayView.h.
This is a single-header library generated from the Corrade project. With
the goal being easy integration, it's deliberately free of all comments
to keep the file size small. More info, detailed changelogs and docs here:
- Project homepage — https://magnum.graphics/corrade/
- Documentation — https://doc.magnum.graphics/corrade/
- GitHub project page — https://github.com/mosra/corrade
- GitHub Singles repository — https://github.com/mosra/magnum-singles
Structured bindings for StridedDimensions on C++17 are opt-in due to
reliance on a potentially heavy STL header ---
`#define CORRADE_STRUCTURED_BINDINGS` before including the file. Including
it multiple times with different macros defined works too.
v2020.06-1846-gc4cdf (2025-01-07)
- Worked around an issue where certain new Clang versions would do an OOB
access with negative strides on 32-bit builds (such as on Emscripten)
- Fixed StridedDimensions structured bindings constexpr signature
- Structured bindings of const types now work even w/o <utility>
v2020.06-1687-g6b5f (2024-06-29)
- Structured bindings for StridedDimensions on C++17
v2020.06-1454-gfc3b7 (2023-08-27)
- New expanded() and collapsed() APIs
- Ability to slice to struct members and member functions
- New exceptPrefix() API, the except() API is renamed to exceptSuffix().
The suffix() API, which took an offset, is removed and will be
eventually reintroduced again but taking suffix size, consistently with
prefix() that takes prefix size.
- New sliceSize() API, taking a begin + size instead of begin + end
- New stridedArrayView() convenience helpers for creating 1D strided
array views from ArrayView instances and a pointer + size
- The Size and Stride member typedefs are moved to the Containers
namespace; Size1D, Size2D, Size3D, Size4D, Stride1D, Stride2D,
Stride3D and Stride4D convenience typedefs were added
- Renamed empty() to isEmpty() for consistency with other bool-returning
APIs
- MSVC 2022 compatibility
- Removed dependency on <utility>, resulting in about ~600 preprocessed
lines less
v2020.06-0-g61d1b58c (2020-06-27)
- Added mutable StridedDimensions::begin()/end()
- New cross-dimension arrayCast() overloads
- Added isContiguous() and asContiguous() overloads
- Similarly to ArrayView, there's now a StridedArrayView<void> and
StridedArrayView<const void> specialization usable for type-erased
storage in constexpr contexts
v2019.10-0-g162d6a7d (2019-10-24)
- Don't assert when creating arrays with non-zero stride but zero size
- Added a StridedArrayView4D convenience typedef
v2019.01-301-gefe8d740 (2019-08-05)
- MSVC 2019 compatibility
- New constructor taking just a size, with stride calculated implicitly
- Added except() for taking everything except last N elements
- Added every() for taking every Nth element
v2019.01-173-ge663b49c (2019-04-30)
- Initial release
Generated from Corrade v2020.06-1846-gc4cdf (2025-01-07), 1327 / 2846 LoC
*/
/*
This file is part of Corrade.
Copyright © 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
Vladimír Vondruš <mosra@centrum.cz>
Copyright © 2022 Stanislaw Halik <sthalik@misaki.pl>
Copyright © 2024 Will Usher <will@willusher.io>
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.
*/
#include <type_traits>
#include "CorradeArrayView.h"
#ifdef __GNUC__
#define CORRADE_TARGET_GCC
#endif
#ifdef __clang__
#define CORRADE_TARGET_CLANG
#endif
#ifndef CORRADE_DEBUG_ASSERT
#define CORRADE_DEBUG_ASSERT(condition, message, returnValue) \
CORRADE_ASSERT(condition, message, returnValue)
#endif
#ifndef CorradeStridedArrayView_h
#define CorradeStridedArrayView_h
namespace Corrade { namespace Containers {
template<unsigned, class> class StridedDimensions;
template<unsigned dimensions> using Size = StridedDimensions<dimensions, std::size_t>;
template<unsigned dimensions> using Stride = StridedDimensions<dimensions, std::ptrdiff_t>;
template<unsigned, class> class StridedIterator;
template<unsigned, class> class StridedArrayView;
template<class T> using StridedArrayView1D = StridedArrayView<1, T>;
template<class T> using StridedArrayView2D = StridedArrayView<2, T>;
template<class T> using StridedArrayView3D = StridedArrayView<3, T>;
template<class T> using StridedArrayView4D = StridedArrayView<4, T>;
template<unsigned, class> class BasicStridedBitArrayView;
}}
#endif
#ifndef Corrade_Tags_h
#define Corrade_Tags_h
namespace Corrade {
struct DefaultInitT {
struct Init {};
constexpr explicit DefaultInitT(Init) {}
};
struct ValueInitT {
struct Init {};
constexpr explicit ValueInitT(Init) {}
};
struct NoInitT {
struct Init {};
constexpr explicit NoInitT(Init) {}
};
struct NoCreateT {
struct Init {};
constexpr explicit NoCreateT(Init) {}
};
struct DirectInitT {
struct Init {};
constexpr explicit DirectInitT(Init) {}
};
struct InPlaceInitT {
struct Init {};
constexpr explicit InPlaceInitT(Init) {}
};
constexpr DefaultInitT DefaultInit{DefaultInitT::Init{}};
constexpr ValueInitT ValueInit{ValueInitT::Init{}};
constexpr NoInitT NoInit{NoInitT::Init{}};
constexpr NoCreateT NoCreate{NoCreateT::Init{}};
constexpr DirectInitT DirectInit{DirectInitT::Init{}};
constexpr InPlaceInitT InPlaceInit{InPlaceInitT::Init{}};
}
#endif
#ifndef Corrade_Containers_sequenceHelpers_h
#define Corrade_Containers_sequenceHelpers_h
namespace Corrade { namespace Containers { namespace Implementation {
template<std::size_t ...> struct Sequence {};
template<class A, class B> struct SequenceConcat;
template<std::size_t ...first, std::size_t ...second> struct SequenceConcat<Sequence<first...>, Sequence<second...>> {
typedef Sequence<first..., (sizeof...(first) + second)...> Type;
};
template<std::size_t N> struct GenerateSequence:
SequenceConcat<typename GenerateSequence<N/2>::Type,
typename GenerateSequence<N - N/2>::Type> {};
template<> struct GenerateSequence<1> { typedef Sequence<0> Type; };
template<> struct GenerateSequence<0> { typedef Sequence<> Type; };
}}}
#endif
#ifndef Corrade_Utility_Math_h
#define Corrade_Utility_Math_h
namespace Corrade { namespace Utility {
template<class T> constexpr T min(T value, T min) {
return min < value ? min : value;
}
template<class T> constexpr T max(T value, T max) {
return value < max ? max : value;
}
template<class T> constexpr T abs(T a) {
return a < T{0} ? -a : a;
}
}}
#endif
#if CORRADE_CXX_STANDARD >= 201402 && !defined(CORRADE_MSVC2015_COMPATIBILITY)
#define CORRADE_CONSTEXPR14 constexpr
#else
#define CORRADE_CONSTEXPR14
#endif
#ifndef Corrade_Containers_StridedDimensions_h
#define Corrade_Containers_StridedDimensions_h
namespace Corrade { namespace Containers {
namespace Implementation {
template<unsigned, class, class> struct StridedDimensionsConverter;
template<unsigned, class> struct StridedElement;
template<unsigned, class> struct StridedBitElement;
template<int> struct ArrayCastFlattenOrInflate;
template<unsigned dimensions, class T> constexpr bool isAnyDimensionZero(const T(&)[dimensions], Sequence<>) {
return false;
}
template<unsigned dimensions, class T, std::size_t first, std::size_t ...next> constexpr bool isAnyDimensionZero(const T(&size)[dimensions], Sequence<first, next...>) {
return !size[first] || isAnyDimensionZero(size, Sequence<next...>{});
}
template<unsigned dimensions> constexpr std::size_t largestStride(const std::size_t(&)[dimensions], const std::ptrdiff_t(&)[dimensions], Sequence<>) {
return 0;
}
template<unsigned dimensions, std::size_t first, std::size_t ...next> constexpr std::size_t largestStride(const std::size_t(&size)[dimensions], const std::ptrdiff_t(&stride)[dimensions], Sequence<first, next...>) {
return Utility::max(size[first]*std::size_t(stride[first] < 0 ? -stride[first] : stride[first]),
largestStride(size, stride, Sequence<next...>{}));
}
template<unsigned dimensions> constexpr std::ptrdiff_t strideForSizeInternal(const std::size_t(&)[dimensions], std::size_t, Sequence<>) {
return 1;
}
template<unsigned dimensions, std::size_t first, std::size_t ...next> constexpr std::ptrdiff_t strideForSizeInternal(const std::size_t(&size)[dimensions], std::size_t index, Sequence<first, next...>) {
#if defined(CORRADE_TARGET_GCC) && !defined(CORRADE_TARGET_CLANG) && __GNUC__*100 + __GNUC_MINOR__ >= 1002
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wtype-limits"
#endif
return (first > index ? size[first] : 1)*strideForSizeInternal(size, index, Sequence<next...>{});
#if defined(CORRADE_TARGET_GCC) && !defined(CORRADE_TARGET_CLANG) && __GNUC__*100 + __GNUC_MINOR__ >= 1002
#pragma GCC diagnostic pop
#endif
}
template<unsigned dimensions, std::size_t ...index> constexpr Stride<dimensions> strideForSize(const std::size_t(&size)[dimensions], std::size_t typeSize, Sequence<index...>) {
return {std::ptrdiff_t(typeSize)*strideForSizeInternal(size, index, typename GenerateSequence<dimensions>::Type{})...};
}
}
template<unsigned dimensions, class T> class StridedDimensions {
public:
constexpr /*implicit*/ StridedDimensions() noexcept: _data{} {}
constexpr explicit StridedDimensions(Corrade::ValueInitT) noexcept: _data{} {}
explicit StridedDimensions(Corrade::NoInitT) noexcept {}
template<class ...Args> constexpr /*implicit*/ StridedDimensions(T first, Args... next) noexcept: _data{T(first), T(next)...} {
static_assert(sizeof...(Args) + 1 == dimensions, "wrong value count");
}
constexpr /*implicit*/ StridedDimensions(const T(&values)[dimensions]) noexcept: StridedDimensions{values, typename Implementation::GenerateSequence<dimensions>::Type{}} {}
template<class U, class = decltype(Implementation::StridedDimensionsConverter<dimensions, T, typename std::decay<U&&>::type>::from(std::declval<U&&>()))> constexpr /*implicit*/ StridedDimensions(U&& other) noexcept: StridedDimensions{Implementation::StridedDimensionsConverter<dimensions, T, typename std::decay<U&&>::type>::from(Utility::forward<U>(other))} {}
template<class U, class = decltype(Implementation::StridedDimensionsConverter<dimensions, T, U>::to(std::declval<StridedDimensions<dimensions, T>>()))> constexpr /*implicit*/ operator U() const noexcept {
return Implementation::StridedDimensionsConverter<dimensions, T, U>::to(*this);
}
template<unsigned d = dimensions, class = typename std::enable_if<d == 1>::type>
constexpr /*implicit*/ operator T() const { return _data[0]; }
bool operator==(const StridedDimensions<dimensions, T>& other) const {
for(std::size_t i = 0; i != dimensions; ++i)
if(_data[i] != other._data[i]) return false;
return true;
}
bool operator!=(const StridedDimensions<dimensions, T>& other) const {
for(std::size_t i = 0; i != dimensions; ++i)
if(_data[i] != other._data[i]) return true;
return false;
}
constexpr T operator[](std::size_t i) const {
return CORRADE_CONSTEXPR_DEBUG_ASSERT(i < dimensions,
"Containers::StridedDimensions::operator[](): dimension" << i << "out of range for" << dimensions << "dimensions"), _data[i];
}
T& operator[](std::size_t i) {
CORRADE_DEBUG_ASSERT(i < dimensions,
"Containers::StridedDimensions::operator[](): dimension" << i << "out of range for" << dimensions << "dimensions", _data[0]);
return _data[i];
}
T* begin() { return _data; }
constexpr const T* begin() const { return _data; }
constexpr const T* cbegin() const { return _data; }
T* end() { return _data + dimensions; }
constexpr const T* end() const { return _data + dimensions; }
constexpr const T* cend() const { return _data + dimensions; }
private:
template<unsigned, class> friend class StridedArrayView;
template<unsigned, class> friend class BasicStridedBitArrayView;
template<unsigned, class> friend struct Implementation::StridedElement;
template<unsigned, class> friend struct Implementation::StridedBitElement;
template<int> friend struct Implementation::ArrayCastFlattenOrInflate;
template<class U, unsigned dimensions_, class T_> friend StridedArrayView<dimensions_, U> arrayCast(const StridedArrayView<dimensions_, T_>&);
template<class U, unsigned dimensions_> friend StridedArrayView<dimensions_, U> arrayCast(const StridedArrayView<dimensions_, void>&);
template<class U, unsigned dimensions_> friend StridedArrayView<dimensions_, U> arrayCast(const StridedArrayView<dimensions_, const void>&);
template<unsigned newDimensions, class U, unsigned dimensions_> StridedArrayView<newDimensions, U> friend arrayCast(const StridedArrayView<dimensions_, void>&, std::size_t);
template<unsigned newDimensions, class U, unsigned dimensions_> StridedArrayView<newDimensions, U> friend arrayCast(const StridedArrayView<dimensions_, const void>&, std::size_t);
#if CORRADE_CXX_STANDARD > 201402
template<std::size_t index> constexpr friend const T& get(const StridedDimensions<dimensions, T>& value) {
return value._data[index];
}
template<std::size_t index> CORRADE_CONSTEXPR14 friend T& get(StridedDimensions<dimensions, T>& value) {
return value._data[index];
}
template<std::size_t index> CORRADE_CONSTEXPR14 friend T&& get(StridedDimensions<dimensions, T>&& value) {
return Utility::move(value._data[index]);
}
#endif
template<class U, std::size_t ...sequence> constexpr explicit StridedDimensions(const U* values, Implementation::Sequence<sequence...>) noexcept: _data{T(values[sequence])...} {}
T _data[dimensions];
};
namespace Implementation {
template<unsigned dimensions, class T> struct StridedDimensionsConverter<dimensions, T, StaticArrayView<std::size_t(dimensions), const T>> {
constexpr static StridedDimensions<dimensions, T> from(StaticArrayView<dimensions, const T> view) {
return fromInternal(view.data(), typename GenerateSequence<dimensions>::Type{});
}
constexpr static StaticArrayView<dimensions, const T> to(const StridedDimensions<dimensions, T>& dimensions_) {
return StaticArrayView<dimensions, const T>{dimensions_.begin()};
}
template<std::size_t ...sequence> constexpr static StridedDimensions<dimensions, T> fromInternal(const T* data, Sequence<sequence...>) {
return {data[sequence]...};
}
};
}
#ifndef CORRADE_MSVC2015_COMPATIBILITY /* Multiple definitions still broken */
template<unsigned dimensions> using Size = StridedDimensions<dimensions, std::size_t>;
#endif
typedef Size<1> Size1D;
typedef Size<2> Size2D;
typedef Size<3> Size3D;
typedef Size<4> Size4D;
#ifndef CORRADE_MSVC2015_COMPATIBILITY /* Multiple definitions still broken */
template<unsigned dimensions> using Stride = StridedDimensions<dimensions, std::ptrdiff_t>;
#endif
typedef Stride<1> Stride1D;
typedef Stride<2> Stride2D;
typedef Stride<3> Stride3D;
typedef Stride<4> Stride4D;
}}
#endif
#ifndef Corrade_Containers_StridedArrayView_h
#define Corrade_Containers_StridedArrayView_h
namespace Corrade { namespace Containers {
template<unsigned dimensions, class T> class StridedArrayView {
static_assert(dimensions, "can't have a zero-dimensional view");
public:
typedef T Type;
typedef typename std::conditional<dimensions == 1, T&, StridedArrayView<dimensions - 1, T>>::type ElementType;
typedef typename std::conditional<std::is_const<T>::value, const void, void>::type ErasedType;
typedef typename std::conditional<std::is_const<T>::value, const char, char>::type ArithmeticType;
enum: unsigned {
Dimensions = dimensions
};
template<class U, class = typename std::enable_if<std::is_same<std::nullptr_t, U>::value>::type> constexpr /*implicit*/ StridedArrayView(U) noexcept: _data{}, _size{}, _stride{} {}
constexpr /*implicit*/ StridedArrayView() noexcept: _data{}, _size{}, _stride{} {}
constexpr /*implicit*/ StridedArrayView(ArrayView<ErasedType> data, T* member, const Containers::Size<dimensions>& size, const Containers::Stride<dimensions>& stride) noexcept;
constexpr /*implicit*/ StridedArrayView(ArrayView<T> data, const Containers::Size<dimensions>& size, const Containers::Stride<dimensions>& stride) noexcept: StridedArrayView{data, data.data(), size, stride} {}
constexpr /*implicit*/ StridedArrayView(ArrayView<T> data, const Containers::Size<dimensions>& size) noexcept: StridedArrayView{data, data.data(), size, Implementation::strideForSize<dimensions>(size._data, sizeof(T), typename Implementation::GenerateSequence<dimensions>::Type{})} {}
template<unsigned d = dimensions, class = typename std::enable_if<d == 1>::type>
constexpr /*implicit*/ StridedArrayView(T* data, std::size_t size) noexcept: _data{data}, _size{size}, _stride{sizeof(T)} {}
template<class U, std::size_t size, unsigned d = dimensions, class = typename std::enable_if<d == 1 && std::is_convertible<U*, T*>::value>::type>
constexpr /*implicit*/ StridedArrayView(U(&data)[size]) noexcept: _data{data}, _size{size}, _stride{sizeof(T)} {
static_assert(sizeof(T) == sizeof(U), "type sizes are not compatible");
}
template<class U, class = typename std::enable_if<std::is_convertible<U*, T*>::value>::type>
constexpr /*implicit*/ StridedArrayView(const StridedArrayView<dimensions, U>& view) noexcept: _data{view._data}, _size{view._size}, _stride{view._stride} {
static_assert(sizeof(T) == sizeof(U), "type sizes are not compatible");
}
template<unsigned lessDimensions
, class = typename std::enable_if<(lessDimensions < dimensions)>::type
> /*implicit*/ StridedArrayView(const StridedArrayView<lessDimensions, T>& other) noexcept;
template<class U
, unsigned d = dimensions, class = typename std::enable_if<d == 1 && std::is_convertible<U*, T*>::value>::type
> constexpr /*implicit*/ StridedArrayView(ArrayView<U> view) noexcept: _data{view.data()}, _size{view.size()}, _stride{sizeof(T)} {
static_assert(sizeof(T) == sizeof(U), "type sizes are not compatible");
}
template<std::size_t size, class U
, unsigned d = dimensions, class = typename std::enable_if<d == 1 && std::is_convertible<U*, T*>::value>::type
> constexpr /*implicit*/ StridedArrayView(StaticArrayView<size, U> view) noexcept: _data{view.data()}, _size{size}, _stride{sizeof(T)} {
static_assert(sizeof(U) == sizeof(T), "type sizes are not compatible");
}
template<class U, unsigned d = dimensions, class = typename std::enable_if<d == 1, decltype(Implementation::ArrayViewConverter<T, typename std::decay<U&&>::type>::from(std::declval<U&&>()))>::type> constexpr /*implicit*/ StridedArrayView(U&& other) noexcept: StridedArrayView{Implementation::ArrayViewConverter<T, typename std::decay<U&&>::type>::from(Utility::forward<U>(other))} {}
constexpr explicit operator bool() const { return _data; }
constexpr ErasedType* data() const { return _data; }
constexpr typename std::conditional<dimensions == 1, std::size_t, const Containers::Size<dimensions>&>::type size() const { return _size; }
constexpr typename std::conditional<dimensions == 1, std::ptrdiff_t, const Containers::Stride<dimensions>&>::type stride() const { return _stride; }
constexpr StridedDimensions<dimensions, bool> isEmpty() const {
return isEmptyInternal(typename Implementation::GenerateSequence<dimensions>::Type{});
}
template<unsigned dimension = 0> bool isContiguous() const;
ArrayView<T> asContiguous() const;
template<unsigned dimension> StridedArrayView<dimension + 1, T> asContiguous() const;
StridedIterator<dimensions, T> begin() const { return {_data, _size, _stride, 0}; }
StridedIterator<dimensions, T> cbegin() const { return {_data, _size, _stride, 0}; }
StridedIterator<dimensions, T> end() const {
return {_data, _size, _stride, _size[0]};
}
StridedIterator<dimensions, T> cend() const {
return {_data, _size, _stride, _size[0]};
}
ElementType front() const;
ElementType back() const;
ElementType operator[](std::size_t i) const;
T& operator[](const Containers::Size<dimensions>& i) const;
StridedArrayView<dimensions, T> slice(std::size_t begin, std::size_t end) const;
template<unsigned newDimensions = dimensions> StridedArrayView<newDimensions, T> slice(const Containers::Size<dimensions>& begin, const Containers::Size<dimensions>& end) const;
StridedArrayView<dimensions, T> sliceSize(std::size_t begin, std::size_t size) const {
return slice(begin, begin + size);
}
template<unsigned newDimensions = dimensions> StridedArrayView<newDimensions, T> sliceSize(const Containers::Size<dimensions>& begin, const Containers::Size<dimensions>& size) const;
template<unsigned newDimensions = dimensions> StridedArrayView<newDimensions, T> slice() const {
return slice<newDimensions>({}, _size);
}
template<class U, class V = T> auto slice(U V::*member) const -> typename std::enable_if<(std::is_class<V>::value || std::is_union<V>::value) && !std::is_member_function_pointer<decltype(member)>::value, StridedArrayView<dimensions, typename std::conditional<std::is_const<T>::value, const U, U>::type>>::type {
return StridedArrayView<dimensions, typename std::conditional<std::is_const<T>::value, const U, U>::type>{_size, _stride, &(static_cast<T*>(_data)->*member)};
}
template<class U, class V = T> typename std::enable_if<(std::is_class<V>::value || std::is_union<V>::value) && !std::is_const<T>::value, StridedArrayView<dimensions, U>>::type slice(U&(V::*memberFunction)()) const;
template<class U, class V = T> typename std::enable_if<(std::is_class<V>::value || std::is_union<V>::value) && !std::is_const<T>::value, StridedArrayView<dimensions, U>>::type slice(U&(V::*memberFunction)() &) const;
template<class U, class V = T> typename std::enable_if<(std::is_class<V>::value || std::is_union<V>::value) && std::is_const<T>::value, StridedArrayView<dimensions, const U>>::type slice(const U&(V::*memberFunction)() const) const;
template<class U, class V = T> typename std::enable_if<(std::is_class<V>::value || std::is_union<V>::value) && std::is_const<T>::value, StridedArrayView<dimensions, const U>>::type slice(const U&(V::*memberFunction)() const &) const;
BasicStridedBitArrayView<dimensions, ArithmeticType> sliceBit(std::size_t index) const;
StridedArrayView<dimensions, T> prefix(std::size_t size) const {
return slice(0, size);
}
template<unsigned newDimensions = dimensions> StridedArrayView<newDimensions, T> prefix(const Containers::Size<dimensions>& size) const {
return slice<newDimensions>({}, size);
}
StridedArrayView<dimensions, T> exceptPrefix(std::size_t size) const {
return slice(size, _size._data[0]);
}
template<unsigned newDimensions = dimensions> StridedArrayView<newDimensions, T> exceptPrefix(const Containers::Size<dimensions>& size) const {
return slice<newDimensions>(size, _size);
}
StridedArrayView<dimensions, T> exceptSuffix(std::size_t size) const {
return slice({}, _size._data[0] - size);
}
template<unsigned newDimensions = dimensions> StridedArrayView<newDimensions, T> exceptSuffix(const Containers::Size<dimensions>& size) const;
StridedArrayView<dimensions, T> every(std::ptrdiff_t skip) const;
StridedArrayView<dimensions, T> every(const Containers::Stride<dimensions>& skip) const;
template<unsigned dimensionA, unsigned dimensionB> StridedArrayView<dimensions, T> transposed() const;
template<unsigned dimension> StridedArrayView<dimensions, T> flipped() const;
template<unsigned dimension> StridedArrayView<dimensions, T> broadcasted(std::size_t size) const;
template<unsigned dimension, unsigned count> StridedArrayView<dimensions + count - 1, T> expanded(const Containers::Size<count>& size) const;
template<unsigned dimension, unsigned count> StridedArrayView<dimensions - count + 1, T> collapsed() const;
private:
template<unsigned, class> friend class StridedArrayView;
template<unsigned, class> friend struct Implementation::StridedElement;
template<int> friend struct Implementation::ArrayCastFlattenOrInflate;
template<class U, unsigned dimensions_, class T_> friend StridedArrayView<dimensions_, U> arrayCast(const StridedArrayView<dimensions_, T_>&);
template<class U, unsigned dimensions_> friend StridedArrayView<dimensions_, U> arrayCast(const StridedArrayView<dimensions_, void>&);
template<class U, unsigned dimensions_> friend StridedArrayView<dimensions_, U> arrayCast(const StridedArrayView<dimensions_, const void>&);
template<unsigned newDimensions, class U, unsigned dimensions_> StridedArrayView<newDimensions, U> friend arrayCast(const StridedArrayView<dimensions_, void>&, std::size_t);
template<unsigned newDimensions, class U, unsigned dimensions_> StridedArrayView<newDimensions, U> friend arrayCast(const StridedArrayView<dimensions_, const void>&, std::size_t);
constexpr /*implicit*/ StridedArrayView(const Containers::Size<dimensions>& size, const Containers::Stride<dimensions>& stride, ErasedType* data) noexcept: _data{data}, _size{size}, _stride{stride} {}
template<std::size_t ...sequence> constexpr StridedDimensions<dimensions, bool> isEmptyInternal(Implementation::Sequence<sequence...>) const {
return StridedDimensions<dimensions, bool>{(_size._data[sequence] == 0)...};
}
ErasedType* _data;
Containers::Size<dimensions> _size;
Containers::Stride<dimensions> _stride;
};
template<unsigned dimensions> class StridedArrayView<dimensions, void> {
static_assert(dimensions, "can't have a zero-dimensional view");
public:
typedef void Type;
typedef void ErasedType;
enum: unsigned {
Dimensions = dimensions
};
template<class U, class = typename std::enable_if<std::is_same<std::nullptr_t, U>::value>::type> constexpr /*implicit*/ StridedArrayView(U) noexcept: _data{}, _size{}, _stride{} {}
constexpr /*implicit*/ StridedArrayView() noexcept: _data{}, _size{}, _stride{} {}
constexpr /*implicit*/ StridedArrayView(ArrayView<void> data, void* member, const Containers::Size<dimensions>& size, const Containers::Stride<dimensions>& stride) noexcept;
constexpr /*implicit*/ StridedArrayView(ArrayView<void> data, const Containers::Size<dimensions>& size, const Containers::Stride<dimensions>& stride) noexcept: StridedArrayView{data, data.data(), size, stride} {}
template<class T, unsigned d = dimensions, class = typename std::enable_if<d == 1>::type>
constexpr /*implicit*/ StridedArrayView(T* data, std::size_t size) noexcept: _data{data}, _size{size}, _stride{sizeof(T)} {}
template<class T, std::size_t size
, unsigned d = dimensions, class = typename std::enable_if<d == 1 && !std::is_const<T>::value>::type
> constexpr /*implicit*/ StridedArrayView(T(&data)[size]) noexcept: _data{data}, _size{size}, _stride{sizeof(T)} {}
template<class T
, class = typename std::enable_if<!std::is_const<T>::value>::type
> constexpr /*implicit*/ StridedArrayView(StridedArrayView<dimensions, T> view) noexcept: _data{view._data}, _size{view._size}, _stride{view._stride} {}
template<class T
, unsigned d = dimensions, class = typename std::enable_if<d == 1 && !std::is_const<T>::value>::type
> constexpr /*implicit*/ StridedArrayView(ArrayView<T> view) noexcept: _data{view.data()}, _size{view.size()}, _stride{sizeof(T)} {}
template<std::size_t size, class T
, unsigned d = dimensions, class = typename std::enable_if<d == 1 && !std::is_const<T>::value>::type
> constexpr /*implicit*/ StridedArrayView(StaticArrayView<size, T> view) noexcept: _data{view.data()}, _size{size}, _stride{sizeof(T)} {}
template<class T, unsigned d = dimensions, class = typename std::enable_if<d == 1, decltype(Implementation::ErasedArrayViewConverter<typename std::decay<T&&>::type>::from(std::declval<T&&>()))>::type> constexpr /*implicit*/ StridedArrayView(T&& other) noexcept: StridedArrayView{Implementation::ErasedArrayViewConverter<typename std::decay<T&&>::type>::from(other)} {}
constexpr explicit operator bool() const { return _data; }
constexpr void* data() const { return _data; }
constexpr typename std::conditional<dimensions == 1, std::size_t, const Containers::Size<dimensions>&>::type size() const { return _size; }
constexpr typename std::conditional<dimensions == 1, std::ptrdiff_t, const Containers::Stride<dimensions>&>::type stride() const { return _stride; }
constexpr StridedDimensions<dimensions, bool> isEmpty() const {
return isEmptyInternal(typename Implementation::GenerateSequence<dimensions>::Type{});
}
private:
template<unsigned, class> friend class StridedArrayView;
constexpr /*implicit*/ StridedArrayView(const Containers::Size<dimensions>& size, const Containers::Stride<dimensions>& stride, void* data) noexcept: _data{data}, _size{size}, _stride{stride} {}
template<std::size_t ...sequence> constexpr StridedDimensions<dimensions, bool> isEmptyInternal(Implementation::Sequence<sequence...>) const {
return StridedDimensions<dimensions, bool>{(_size._data[sequence] == 0)...};
}
void* _data;
Containers::Size<dimensions> _size;
Containers::Stride<dimensions> _stride;
};
template<unsigned dimensions> class StridedArrayView<dimensions, const void> {
static_assert(dimensions, "can't have a zero-dimensional view");
public:
typedef const void Type;
typedef const void ErasedType;
enum: unsigned {
Dimensions = dimensions
};
template<class U, class = typename std::enable_if<std::is_same<std::nullptr_t, U>::value>::type> constexpr /*implicit*/ StridedArrayView(U) noexcept: _data{}, _size{}, _stride{} {}
constexpr /*implicit*/ StridedArrayView() noexcept: _data{}, _size{}, _stride{} {}
constexpr /*implicit*/ StridedArrayView(ArrayView<const void> data, const void* member, const Containers::Size<dimensions>& size, const Containers::Stride<dimensions>& stride) noexcept;
constexpr /*implicit*/ StridedArrayView(ArrayView<const void> data, const Containers::Size<dimensions>& size, const Containers::Stride<dimensions>& stride) noexcept: StridedArrayView{data, data.data(), size, stride} {}
template<class T, unsigned d = dimensions, class = typename std::enable_if<d == 1>::type>
constexpr /*implicit*/ StridedArrayView(T* data, std::size_t size) noexcept: _data{data}, _size{size}, _stride{sizeof(T)} {}
template<class T, std::size_t size, unsigned d = dimensions, class = typename std::enable_if<d == 1>::type>
constexpr /*implicit*/ StridedArrayView(T(&data)[size]) noexcept: _data{data}, _size{size}, _stride{sizeof(T)} {}
template<class T> constexpr /*implicit*/ StridedArrayView(StridedArrayView<dimensions, T> view) noexcept: _data{view._data}, _size{view._size}, _stride{view._stride} {}
template<class T, unsigned d = dimensions, class = typename std::enable_if<d == 1>::type>
constexpr /*implicit*/ StridedArrayView(ArrayView<T> view) noexcept: _data{view.data()}, _size{view.size()}, _stride{sizeof(T)} {}
template<std::size_t size, class T, unsigned d = dimensions, class = typename std::enable_if<d == 1>::type>
constexpr /*implicit*/ StridedArrayView(StaticArrayView<size, T> view) noexcept: _data{view.data()}, _size{size}, _stride{sizeof(T)} {}
template<class T, unsigned d = dimensions, class = typename std::enable_if<d == 1, decltype(Implementation::ErasedArrayViewConverter<const T>::from(std::declval<const T&>()))>::type> constexpr /*implicit*/ StridedArrayView(const T& other) noexcept: StridedArrayView{Implementation::ErasedArrayViewConverter<const T>::from(other)} {}
constexpr explicit operator bool() const { return _data; }
constexpr const void* data() const { return _data; }
constexpr typename std::conditional<dimensions == 1, std::size_t, const Containers::Size<dimensions>&>::type size() const { return _size; }
constexpr typename std::conditional<dimensions == 1, std::ptrdiff_t, const Containers::Stride<dimensions>&>::type stride() const { return _stride; }
constexpr StridedDimensions<dimensions, bool> isEmpty() const {
return isEmptyInternal(typename Implementation::GenerateSequence<dimensions>::Type{});
}
private:
template<unsigned, class> friend class StridedArrayView;
template<class U, unsigned dimensions_> friend StridedArrayView<dimensions_, U> arrayCast(const StridedArrayView<dimensions_, const void>&);
template<unsigned newDimensions, class U, unsigned dimensions_> StridedArrayView<newDimensions, U> friend arrayCast(const StridedArrayView<dimensions_, const void>&, std::size_t);
constexpr /*implicit*/ StridedArrayView(const Containers::Size<dimensions>& size, const Containers::Stride<dimensions>& stride, const void* data) noexcept: _data{data}, _size{size}, _stride{stride} {}
template<std::size_t ...sequence> constexpr StridedDimensions<dimensions, bool> isEmptyInternal(Implementation::Sequence<sequence...>) const {
return StridedDimensions<dimensions, bool>{(_size._data[sequence] == 0)...};
}
const void* _data;
Containers::Size<dimensions> _size;
Containers::Stride<dimensions> _stride;
};
#ifndef CORRADE_MSVC2015_COMPATIBILITY /* Multiple definitions still broken */
template<class T> using StridedArrayView1D = StridedArrayView<1, T>;
template<class T> using StridedArrayView2D = StridedArrayView<2, T>;
template<class T> using StridedArrayView3D = StridedArrayView<3, T>;
template<class T> using StridedArrayView4D = StridedArrayView<4, T>;
#endif
template<class T> constexpr StridedArrayView1D<T> stridedArrayView(ArrayView<typename StridedArrayView1D<T>::ErasedType> data, T* member, std::size_t size, std::ptrdiff_t stride) {
return StridedArrayView1D<T>{data, member, size, stride};
}
#if defined(CORRADE_TARGET_GCC) && !defined(CORRADE_TARGET_CLANG) && __GNUC__ < 5
template<std::size_t size_, class T, class U> constexpr StridedArrayView1D<T> stridedArrayView(U(&data)[size_], T* member, std::size_t size, std::ptrdiff_t stride) {
return StridedArrayView1D<T>{data, member, size, stride};
}
#endif
template<class T> constexpr StridedArrayView1D<T> stridedArrayView(ArrayView<T> data, std::size_t size, std::ptrdiff_t stride) {
return {data, size, stride};
}
template<class T> constexpr StridedArrayView1D<T> stridedArrayView(T* data, std::size_t size) {
return {data, size};
}
template<std::size_t size, class T> constexpr StridedArrayView1D<T> stridedArrayView(T(&data)[size]) {
return StridedArrayView1D<T>{data};
}
template<class T> StridedArrayView1D<const T> stridedArrayView(std::initializer_list<T> list) {
return StridedArrayView1D<const T>{arrayView(list)};
}
template<class T> constexpr StridedArrayView1D<T> stridedArrayView(ArrayView<T> view) {
return view;
}
template<std::size_t size, class T> constexpr StridedArrayView1D<T> stridedArrayView(StaticArrayView<size, T> view) {
return ArrayView<T>{view};
}
template<unsigned dimensions, class T> constexpr StridedArrayView<dimensions, T> stridedArrayView(StridedArrayView<dimensions, T> view) {
return view;
}
template<class T, class U = decltype(stridedArrayView(Implementation::ErasedArrayViewConverter<typename std::remove_reference<T&&>::type>::from(std::declval<T&&>())))> constexpr U stridedArrayView(T&& other) {
return Implementation::ErasedArrayViewConverter<typename std::remove_reference<T&&>::type>::from(Utility::forward<T>(other));
}
template<class U, unsigned dimensions, class T> StridedArrayView<dimensions, U> arrayCast(const StridedArrayView<dimensions, T>& view) {
static_assert(std::is_standard_layout<T>::value, "the source type is not standard layout");
static_assert(std::is_standard_layout<U>::value, "the target type is not standard layout");
for(unsigned i = 0; i != dimensions; ++i) {
CORRADE_ASSERT(!view._stride._data[i] || sizeof(U) <= std::size_t(view._stride._data[i] < 0 ? -view._stride._data[i] : view._stride._data[i]),
"Containers::arrayCast(): can't fit a" << sizeof(U) << Utility::Debug::nospace << "-byte type into a stride of" << view._stride._data[i], {});
}
return StridedArrayView<dimensions, U>{view._size, view._stride, view._data};
}
template<class U, unsigned dimensions> StridedArrayView<dimensions, U> arrayCast(const StridedArrayView<dimensions, const void>& view) {
static_assert(std::is_standard_layout<U>::value, "the target type is not standard layout");
for(unsigned i = 0; i != dimensions; ++i) {
CORRADE_ASSERT(!view._stride._data[i] || sizeof(U) <= std::size_t(view._stride._data[i] < 0 ? -view._stride._data[i] : view._stride._data[i]),
"Containers::arrayCast(): can't fit a" << sizeof(U) << Utility::Debug::nospace << "-byte type into a stride of" << view._stride._data[i], {});
}
return StridedArrayView<dimensions, U>{view._size, view._stride, view._data};
}
template<class U, unsigned dimensions> StridedArrayView<dimensions, U> arrayCast(const StridedArrayView<dimensions, void>& view) {
auto out = arrayCast<const U, dimensions>(StridedArrayView<dimensions, const void>{view});
return StridedArrayView<dimensions, U>{out._size, out._stride, const_cast<void*>(out._data)};
}
namespace Implementation {
template<int dimensions> struct ArrayCastFlattenOrInflate {
static_assert(dimensions == 0, "can only inflate into one more dimension or flatten into the same / one less dimension");
};
template<> struct ArrayCastFlattenOrInflate<-1> {
template<class U, unsigned dimensions, class T> static StridedArrayView<dimensions - 1, U> cast(const StridedArrayView<dimensions, T>& view) {
for(unsigned i = 0; i != dimensions - 1; ++i) {
CORRADE_ASSERT(!view._stride._data[i] || sizeof(U) <= std::size_t(view._stride._data[i] < 0 ? -view._stride._data[i] : view._stride._data[i]),
"Containers::arrayCast(): can't fit a" << sizeof(U) << Utility::Debug::nospace << "-byte type into a stride of" << view._stride._data[i], {});
}
CORRADE_ASSERT(sizeof(T) == std::size_t(view._stride._data[dimensions - 1]),
"Containers::arrayCast(): last dimension needs to be contiguous in order to be flattened, expected stride" << sizeof(T) << "but got" << view.stride()[dimensions - 1], {});
CORRADE_ASSERT(sizeof(T)*view._size._data[dimensions - 1] == sizeof(U),
"Containers::arrayCast(): last dimension needs to have byte size equal to new type size in order to be flattened, expected" << sizeof(U) << "but got" << sizeof(T)*view._size._data[dimensions - 1], {});
return StridedArrayView<dimensions - 1, U>{
StaticArrayView<dimensions, const std::size_t>(view._size).template prefix<dimensions - 1>(),
StaticArrayView<dimensions, const std::ptrdiff_t>(view._stride).template prefix<dimensions - 1>(),
view._data};
}
};
template<> struct ArrayCastFlattenOrInflate<0> {
template<class U, unsigned dimensions, class T> static StridedArrayView<dimensions, U> cast(const StridedArrayView<dimensions, T>& view) {
for(unsigned i = 0; i != dimensions - 1; ++i) {
CORRADE_ASSERT(!view._stride._data[i] || sizeof(U) <= std::size_t(view._stride._data[i] < 0 ? -view._stride._data[i] : view._stride._data[i]),
"Containers::arrayCast(): can't fit a" << sizeof(U) << Utility::Debug::nospace << "-byte type into a stride of" << view._stride._data[i], {});
}
CORRADE_ASSERT(sizeof(T) == std::size_t(view._stride._data[dimensions - 1]),
"Containers::arrayCast(): last dimension needs to be contiguous in order to be flattened, expected stride" << sizeof(T) << "but got" << view.stride()[dimensions - 1], {});
CORRADE_ASSERT(sizeof(T)*view._size._data[dimensions - 1] % sizeof(U) == 0,
"Containers::arrayCast(): last dimension needs to have byte size divisible by new type size in order to be flattened, but for a" << sizeof(U) << Utility::Debug::nospace << "-byte type got" << sizeof(T)*view._size._data[dimensions - 1], {});
Size<dimensions> size;
Stride<dimensions> stride;
size._data[dimensions - 1] = sizeof(T)*view._size._data[dimensions - 1]/sizeof(U);
stride._data[dimensions - 1] = sizeof(U);
for(std::size_t i = 0; i != dimensions - 1; ++i) {
size._data[i] = view._size._data[i];
stride._data[i] = view._stride._data[i];
}
return StridedArrayView<dimensions, U>{size, stride, view._data};
}
};
template<> struct ArrayCastFlattenOrInflate<+1> {
template<class U, unsigned dimensions, class T> static StridedArrayView<dimensions + 1, U> cast(const StridedArrayView<dimensions, T>& view) {
constexpr std::size_t lastDimensionSize = sizeof(T)/sizeof(U);
static_assert(sizeof(T) % lastDimensionSize == 0, "original type not a multiply of inflated type");
Size<dimensions + 1> size;
Stride<dimensions + 1> stride;
size._data[dimensions] = lastDimensionSize;
stride._data[dimensions] = sizeof(U);
for(std::size_t i = 0; i != dimensions; ++i) {
size._data[i] = view._size._data[i];
stride._data[i] = view._stride._data[i];
}
return StridedArrayView<dimensions + 1, U>{size, stride, view._data};
}
};
}
template<unsigned newDimensions, class U, unsigned dimensions, class T> StridedArrayView<newDimensions, U> arrayCast(const StridedArrayView<dimensions, T>& view) {
static_assert(std::is_standard_layout<T>::value, "the source type is not standard layout");
static_assert(std::is_standard_layout<U>::value, "the target type is not standard layout");
return Implementation::ArrayCastFlattenOrInflate<int(newDimensions) - int(dimensions)>::template cast<U>(view);
}
template<unsigned newDimensions, class U, class T> inline StridedArrayView<newDimensions, U> arrayCast(const ArrayView<T>& view) {
return arrayCast<newDimensions, U, 1, T>(view);
}
template<unsigned newDimensions, class U, unsigned dimensions> StridedArrayView<newDimensions, U> arrayCast(const StridedArrayView<dimensions, const void>& view, std::size_t lastDimensionSize) {
static_assert(std::is_standard_layout<U>::value, "the target type is not standard layout");
static_assert(newDimensions == dimensions + 1, "can inflate only into one more dimension");
for(unsigned i = 0; i != dimensions - 1; ++i) {
CORRADE_ASSERT(!view._stride._data[i] || sizeof(U) <= std::size_t(view._stride._data[i] < 0 ? -view._stride._data[i] : view._stride._data[i]),
"Containers::arrayCast(): can't fit a" << sizeof(U) << Utility::Debug::nospace << "-byte type into a stride of" << view._stride._data[i], {});
}
CORRADE_ASSERT(!view._stride._data[dimensions - 1] || lastDimensionSize*sizeof(U) <= std::size_t(view._stride._data[dimensions - 1] < 0 ? -view._stride._data[dimensions - 1] : view._stride._data[dimensions - 1]),
"Containers::arrayCast(): can't fit" << lastDimensionSize << sizeof(U) << Utility::Debug::nospace << "-byte items into a stride of" << view._stride._data[dimensions - 1], {});
std::size_t size[newDimensions];
std::ptrdiff_t stride[newDimensions];
size[dimensions] = lastDimensionSize;
stride[dimensions] = sizeof(U);
for(std::size_t i = 0; i != dimensions; ++i) {
size[i] = view._size._data[i];
stride[i] = view._stride._data[i];
}
return StridedArrayView<newDimensions, U>{
StaticArrayView<newDimensions, const std::size_t>(size), StaticArrayView<newDimensions, const std::ptrdiff_t>(stride),
view._data};
}
template<unsigned newDimensions, class U, unsigned dimensions> StridedArrayView<newDimensions, U> arrayCast(const StridedArrayView<dimensions, void>& view, std::size_t lastDimensionSize) {
auto out = arrayCast<newDimensions, const U, dimensions>(StridedArrayView<dimensions, const void>{view}, lastDimensionSize);
return StridedArrayView<newDimensions, U>{out._size, out._stride, const_cast<void*>(out._data)};
}
template<unsigned dimensions, class T> class StridedIterator {
public:
typedef T Type;
typedef typename std::conditional<dimensions == 1, T&, StridedArrayView<dimensions - 1, T>>::type ElementType;
/*implicit*/ StridedIterator(typename std::conditional<std::is_const<T>::value, const void, void>::type* data, const Size<dimensions>& size, const Stride<dimensions>& stride, std::size_t i) noexcept: _data{data}, _size{size}, _stride{stride}, _i{i} {}
#ifdef CORRADE_MSVC2015_COMPATIBILITY
/*implicit*/ StridedIterator(): _data{}, _size{}, _stride{}, _i{} {}
#endif
bool operator==(const StridedIterator<dimensions, T>& other) const {
return _data == other._data && _stride == other._stride && _i == other._i;
}
bool operator!=(const StridedIterator<dimensions, T>& other) const {
return _data != other._data || _stride != other._stride || _i != other._i;
}
bool operator<(const StridedIterator<dimensions, T>& other) const {
return _data == other._data && _stride == other._stride && _i < other._i;
}
bool operator<=(const StridedIterator<dimensions, T>& other) const {
return _data == other._data && _stride == other._stride && _i <= other._i;
}
bool operator>(const StridedIterator<dimensions, T>& other) const {
return _data == other._data && _stride == other._stride && _i > other._i;
}
bool operator>=(const StridedIterator<dimensions, T>& other) const {
return _data == other._data && _stride == other._stride && _i >= other._i;
}
StridedIterator<dimensions, T> operator+(std::ptrdiff_t i) const {
return {_data, _size, _stride, _i + i};
}
StridedIterator<dimensions, T>& operator+=(std::ptrdiff_t i) {
_i += i;
return *this;
}
StridedIterator<dimensions, T> operator-(std::ptrdiff_t i) const {
return {_data, _size, _stride, _i - i};
}
StridedIterator<dimensions, T>& operator-=(std::ptrdiff_t i) {
_i -= i;
return *this;
}
std::ptrdiff_t operator-(const StridedIterator<dimensions, T>& it) const {
return _i - it._i;
}
StridedIterator<dimensions, T>& operator--() {
--_i;
return *this;
}
StridedIterator<dimensions, T>& operator++() {
++_i;
return *this;
}
ElementType operator*() const {
return Implementation::StridedElement<dimensions, T>::get(_data, _size, _stride, _i);
}
private:
typename std::conditional<std::is_const<T>::value, const void, void>::type* _data;
Size<dimensions> _size;
Stride<dimensions> _stride;
std::size_t _i;
};
template<unsigned dimensions, class T> inline StridedIterator<dimensions, T> operator+(std::ptrdiff_t i, StridedIterator<dimensions, T> it) {
return it + i;
}
template<unsigned dimensions, class T> constexpr StridedArrayView<dimensions, T>::StridedArrayView(ArrayView<ErasedType> data, T* member, const Containers::Size<dimensions>& size, const Containers::Stride<dimensions>& stride) noexcept: _data{(
CORRADE_CONSTEXPR_ASSERT(Implementation::isAnyDimensionZero(size._data, typename Implementation::GenerateSequence<dimensions>::Type{}) || Implementation::largestStride(size._data, stride._data, typename Implementation::GenerateSequence<dimensions>::Type{}) <= data.size(),
"Containers::StridedArrayView: data size" << data.size() << "is not enough for" << size << "elements of stride" << stride),
member)}, _size{size}, _stride{stride} {}
template<unsigned dimensions> constexpr StridedArrayView<dimensions, void>::StridedArrayView(ArrayView<void> data, void* member, const Containers::Size<dimensions>& size, const Containers::Stride<dimensions>& stride) noexcept: _data{(
CORRADE_CONSTEXPR_ASSERT(Implementation::isAnyDimensionZero(size._data, typename Implementation::GenerateSequence<dimensions>::Type{}) || Implementation::largestStride(size._data, stride._data, typename Implementation::GenerateSequence<dimensions>::Type{}) <= data.size(),
"Containers::StridedArrayView: data size" << data.size() << "is not enough for" << size << "elements of stride" << stride),
member)}, _size{size}, _stride{stride} {}
template<unsigned dimensions> constexpr StridedArrayView<dimensions, const void>::StridedArrayView(ArrayView<const void> data, const void* member, const Containers::Size<dimensions>& size, const Containers::Stride<dimensions>& stride) noexcept: _data{(
CORRADE_CONSTEXPR_ASSERT(Implementation::isAnyDimensionZero(size._data, typename Implementation::GenerateSequence<dimensions>::Type{}) || Implementation::largestStride(size._data, stride._data, typename Implementation::GenerateSequence<dimensions>::Type{}) <= data.size(),
"Containers::StridedArrayView: data size" << data.size() << "is not enough for" << size << "elements of stride" << stride),
member)}, _size{size}, _stride{stride} {}
template<unsigned dimensions, class T> template<unsigned lessDimensions, class> StridedArrayView<dimensions, T>::StridedArrayView(const StridedArrayView<lessDimensions, T>& other) noexcept: _data{other._data}, _size{Corrade::NoInit}, _stride{Corrade::NoInit} {
constexpr std::size_t extraDimensions = dimensions - lessDimensions;
const std::ptrdiff_t stride = std::ptrdiff_t(other._size._data[0])*other._stride._data[0];
for(std::size_t i = 0; i != extraDimensions; ++i) {
_size._data[i] = 1;
_stride._data[i] = stride;
}
for(std::size_t i = 0; i != lessDimensions; ++i) {
_size._data[extraDimensions + i] = other._size._data[i];
_stride._data[extraDimensions + i] = other._stride._data[i];
}
}
template<unsigned dimensions, class T> template<unsigned dimension> bool StridedArrayView<dimensions, T>::isContiguous() const {
static_assert(dimension < dimensions, "dimension out of range");
std::size_t nextDimensionSize = sizeof(T);
for(std::size_t i = dimensions; i != dimension; --i) {
if(std::size_t(_stride._data[i - 1]) != nextDimensionSize)
return false;
nextDimensionSize *= _size._data[i - 1];