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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef SBKARRAYCONVERTERS_H
#define SBKARRAYCONVERTERS_H
#include "sbkpython.h"
#include "shibokenmacros.h"
extern "C" {
struct SbkArrayConverter;
}
namespace Shiboken::Conversions {
enum : int {
SBK_UNIMPLEMENTED_ARRAY_IDX,
SBK_DOUBLE_ARRAY_IDX,
SBK_FLOAT_ARRAY_IDX,
SBK_SHORT_ARRAY_IDX,
SBK_UNSIGNEDSHORT_ARRAY_IDX,
SBK_INT_ARRAY_IDX,
SBK_UNSIGNEDINT_ARRAY_IDX,
SBK_LONGLONG_ARRAY_IDX,
SBK_UNSIGNEDLONGLONG_ARRAY_IDX,
SBK_ARRAY_IDX_SIZE
};
/**
* ArrayHandle is the type expected by shiboken6's array converter
* functions. It provides access to array data which it may own
* (in the case of conversions from PySequence) or a flat pointer
* to internal data (in the case of array modules like numpy).
*/
template <class T>
class ArrayHandle
{
public:
ArrayHandle(const ArrayHandle &) = delete;
ArrayHandle& operator=(const ArrayHandle &) = delete;
ArrayHandle(ArrayHandle &&) = delete;
ArrayHandle& operator=(ArrayHandle &&) = delete;
ArrayHandle() = default;
~ArrayHandle() { destroy(); }
void allocate(Py_ssize_t size);
void setData(T *d, size_t size);
size_t size() const { return m_size; }
T *data() const { return m_data; }
operator T *() const { return m_data; }
private:
void destroy();
T *m_data = nullptr;
Py_ssize_t m_size = 0;
bool m_owned = false;
};
/**
* Similar to ArrayHandle for fixed size 2 dimensional arrays.
* columns is the size of the last dimension
* It only has a setData() methods since it will be used for numpy only.
*/
template <class T, int columns>
class Array2Handle
{
public:
using RowType = T[columns];
Array2Handle() = default;
operator RowType *() const { return m_rows; }
void setData(RowType *d) { m_rows = d; }
private:
RowType *m_rows = nullptr;
};
/// Returns the converter for an array type.
LIBSHIBOKEN_API SbkArrayConverter *arrayTypeConverter(int index, int dimension = 1);
template <class T>
struct ArrayTypeIndex{
enum : int { index = SBK_UNIMPLEMENTED_ARRAY_IDX };
};
template <> struct ArrayTypeIndex<double> { enum : int { index = SBK_DOUBLE_ARRAY_IDX }; };
template <> struct ArrayTypeIndex<float> { enum : int { index = SBK_FLOAT_ARRAY_IDX };};
template <> struct ArrayTypeIndex<short> { enum : int { index = SBK_SHORT_ARRAY_IDX };};
template <> struct ArrayTypeIndex<unsigned short> { enum : int { index = SBK_UNSIGNEDSHORT_ARRAY_IDX };};
template <> struct ArrayTypeIndex<int> { enum : int { index = SBK_INT_ARRAY_IDX };};
template <> struct ArrayTypeIndex<unsigned> { enum : int { index = SBK_UNSIGNEDINT_ARRAY_IDX };};
template <> struct ArrayTypeIndex<long long> { enum : int { index = SBK_LONGLONG_ARRAY_IDX };};
template <> struct ArrayTypeIndex<unsigned long long> { enum : int { index = SBK_UNSIGNEDLONGLONG_ARRAY_IDX };};
template<typename T> SbkArrayConverter *ArrayTypeConverter(int dimension)
{ return arrayTypeConverter(ArrayTypeIndex<T>::index, dimension); }
// ArrayHandle methods
template<class T>
void ArrayHandle<T>::allocate(Py_ssize_t size)
{
destroy();
m_data = new T[size];
m_size = size;
m_owned = true;
}
template<class T>
void ArrayHandle<T>::setData(T *d, size_t size)
{
destroy();
m_data = d;
m_size = size;
m_owned = false;
}
template<class T>
void ArrayHandle<T>::destroy()
{
if (m_owned)
delete [] m_data;
m_data = nullptr;
m_size = 0;
m_owned = false;
}
} // namespace Shiboken::Conversions
#endif // SBKARRAYCONVERTERS_H
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