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// Copyright (C) 2021 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
// included by sbknumpy.cpp
#include "helper.h"
#include <iostream>
#include <iomanip>
#ifdef HAVE_NUMPY
namespace Shiboken {
namespace Numpy {
View View::fromPyObject(PyObject *pyIn)
{
if (pyIn == nullptr || PyArray_Check(pyIn) == 0)
return {};
auto *ar = reinterpret_cast<PyArrayObject *>(pyIn);
if ((PyArray_FLAGS(ar) & NPY_ARRAY_C_CONTIGUOUS) == 0)
return {};
const int ndim = PyArray_NDIM(ar);
if (ndim > 2)
return {};
View::Type type;
switch (PyArray_TYPE(ar)) {
case NPY_INT:
type = View::Int;
break;
case NPY_UINT:
type = View::Unsigned;
break;
case NPY_FLOAT:
type = View::Float;
break;
case NPY_DOUBLE:
type = View::Double;
break;
default:
return {};
}
View result;
result.ndim = ndim;
result.type = type;
result.data = PyArray_DATA(ar);
result.dimensions[0] = PyArray_DIMS(ar)[0];
result.stride[0] = PyArray_STRIDES(ar)[0];
if (ndim > 1) {
result.dimensions[1] = PyArray_DIMS(ar)[1];
result.stride[1] = PyArray_STRIDES(ar)[1];
} else {
result.dimensions[1] = result.stride[1] = 0;
}
return result;
}
} // namespace Numpy
template <class T>
static void debugArray(std::ostream &str, const T *data, int n)
{
static const int maxData = 10;
str << " = ";
auto *end = data + std::min(n, maxData);
for (auto *d = data; d != end; ++d) {
if (d != data)
str << ", ";
str << *d;
}
if (n > maxData)
str << "...";
}
std::ostream &operator<<(std::ostream &str, const debugPyArrayObject &a)
{
str << "PyArrayObject(";
if (a.m_object == nullptr) {
str << '0';
} else if (PyArray_Check(a.m_object) != 0) {
auto *ar = reinterpret_cast<PyArrayObject *>(a.m_object);
const int ndim = PyArray_NDIM(ar);
const int type = PyArray_TYPE(ar);
const int flags = PyArray_FLAGS(ar);
str << "ndim=" << ndim << " [";
for (int d = 0; d < ndim; ++d) {
if (d)
str << ", ";
str << PyArray_DIMS(ar)[d];
}
str << "], type=";
switch (type) {
case NPY_INT:
str << "int";
break;
case NPY_UINT:
str << "uint";
break;
case NPY_FLOAT:
str << "float";
break;
case NPY_DOUBLE:
str << "double";
break;
default:
str << '(' << type << ')';
break;
}
str << ", flags=0x" << std::hex << flags << std::dec;
if ((flags & NPY_ARRAY_C_CONTIGUOUS) != 0)
str << " [C-contiguous]";
if ((flags & NPY_ARRAY_F_CONTIGUOUS) != 0)
str << " [Fortran-contiguous]";
if ((flags & NPY_ARRAY_ALIGNED) != 0)
str << " [aligned]";
if ((flags & NPY_ARRAY_OWNDATA) != 0)
str << " [owndata]";
if ((flags & NPY_ARRAY_WRITEABLE) != 0)
str << " [writeable]";
if (const int dim0 = PyArray_DIMS(ar)[0]) {
auto *data = PyArray_DATA(ar);
switch (type) {
case NPY_INT:
debugArray(str, reinterpret_cast<const int *>(data), dim0);
break;
case NPY_UINT:
debugArray(str, reinterpret_cast<const unsigned *>(data), dim0);
break;
case NPY_FLOAT:
debugArray(str, reinterpret_cast<const float *>(data), dim0);
break;
case NPY_DOUBLE:
debugArray(str, reinterpret_cast<const double *>(data), dim0);
break;
}
}
} else {
str << "Invalid";
}
str << ')';
return str;
}
} //namespace Shiboken
#else // HAVE_NUMPY
namespace Shiboken::Numpy
{
View View::fromPyObject(PyObject *)
{
return {};
}
std::ostream &operator<<(std::ostream &str, const debugPyArrayObject &)
{
str << "Unimplemented function " << __FUNCTION__ << ", (numpy was not found).";
return str;
}
} //namespace Shiboken::Numpy
#endif // !HAVE_NUMPY
namespace Shiboken::Numpy
{
bool View::sameLayout(const View &rhs) const
{
return rhs && *this && ndim == rhs.ndim && type == rhs.type;
}
bool View::sameSize(const View &rhs) const
{
return sameLayout(rhs)
&& dimensions[0] == rhs.dimensions[0] && dimensions[1] == rhs.dimensions[1];
}
std::ostream &operator<<(std::ostream &str, const View &v)
{
str << "Shiboken::Numpy::View(";
if (v) {
str << "type=" << v.type << ", ndim=" << v.ndim << " ["
<< v.dimensions[0];
if (v.ndim > 1)
str << ", " << v.dimensions[1];
str << "], stride=[" << v.stride[0];
if (v.ndim > 1)
str << ", " << v.stride[1];
str << "], data=" << v.data;
} else {
str << "invalid";
}
str << ')';
return str;
}
} //namespace Shiboken::Numpy
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