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fromPython.cpp
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#include "python.h"
#include "fromPython.h"
using ulong = unsigned long long;
using uint = unsigned int;
using ushort = unsigned short;
using uchar = unsigned char;
using PtrBob = Amino::Ptr<Bifrost::Object>;
int initFromPython() {
import_array();
return 0;
}
namespace FromPython
{
void mergeBobWithDict(Amino::MutablePtr<Bifrost::Object>& bob, PyObject* py_obj)
{
PyObject* keys = PyDict_Keys(py_obj);
PyObject* values = PyDict_Values(py_obj);
for (int i = 0; i < PyList_GET_SIZE(keys); i++) {
auto py_key = PyList_GetItem(keys, i);
auto py_item = PyList_GetItem(values, i);
bob->setProperty(PyUnicode_AsUTF8(py_key), anyFromPy(py_item));
}
Py_DECREF(keys); Py_DECREF(values);
}
template <typename T>
T toSimple(PyObject* py_obj);
template <>
PtrBob toSimple(PyObject* py_obj) {
auto bob = Bifrost::createObject();
mergeBobWithDict(bob, py_obj);
return bob.toImmutable();
}
template <>
Amino::String toSimple(PyObject* py_obj) {
return PyUnicode_AsUTF8(py_obj);
}
template <>
float toSimple(PyObject* py_obj) {
return PyFloat_AS_DOUBLE(py_obj);
}
template <>
long long toSimple(PyObject* py_obj) {
return PyLong_AsLongLong(py_obj);
}
template <>
bool toSimple(PyObject* py_obj) {
return PyObject_IsTrue(py_obj);
}
template <typename T>
Amino::Ptr<Amino::Array<T>> arrayFromSequence(PyObject* py_obj) {
auto list_len = PySequence_Size(py_obj);
Amino::Array<T> amino_array(list_len);
for (int i = 0; i < list_len; i++) {
auto py_item = PySequence_GetItem(py_obj, i);
amino_array[i] = toSimple<T>(py_item);
}
auto out_array = Amino::newClassPtr<Amino::Array<T>>(std::move(amino_array));
return out_array;
}
Amino::Any anyFromSequence(PyObject* py_obj) {
auto list_len = PySequence_Size(py_obj);
if (list_len == 0) // if the list/tuple is empty the type can not be determined, assume a list of objects.
return Amino::newClassPtr<Amino::Array<PtrBob>>();
Amino::Any result;
PyObject* first = PySequence_GetItem(py_obj, 0);
if (Py_IS_TYPE(first, &PyDict_Type)) // -> Object
result = arrayFromSequence<PtrBob>(py_obj);
else if (Py_IS_TYPE(first, &PyUnicode_Type))
result = arrayFromSequence<Amino::String>(py_obj);
else if (Py_IS_TYPE(first, &PyFloat_Type))
result = arrayFromSequence<float>(py_obj);
else if (Py_IS_TYPE(first, &PyLong_Type))
result = arrayFromSequence<long long>(py_obj);
else if (Py_IS_TYPE(first, &PyBool_Type))
result = arrayFromSequence<bool>(py_obj);
else
result = Amino::newClassPtr<Amino::Array<PtrBob>>();
Py_CLEAR(first);
return result;
}
}
namespace FromNumpy
{
Amino::Any toScalar(PyObject* py_obj)
{
auto desc = PyArray_DescrFromScalar(py_obj)->type_num;
void* data;
PyArray_ScalarAsCtype(py_obj, data);
switch (PyArray_DescrFromScalar(py_obj)->type_num) {
case NPY_FLOAT: return *static_cast<float*>(data);
case NPY_DOUBLE: return *static_cast<double*>(data);
case NPY_LONGLONG: return *static_cast<long long*>(data);
case NPY_ULONGLONG: return *static_cast<ulong*>(data);
case NPY_INT: case NPY_LONG: return *static_cast<int*>(data);
case NPY_UINT: case NPY_ULONG: return *static_cast<uint*>(data);
case NPY_SHORT: return *static_cast<short*>(data);
case NPY_USHORT: return *static_cast<ushort*>(data);
case NPY_BYTE: return *static_cast<signed char*>(data);
case NPY_UBYTE: return *static_cast<uchar*>(data);
case NPY_BOOL: return *static_cast<bool*>(data);
default: return FromPython::toSimple<Amino::String>(PyObject_Str(py_obj));
}
// otherwise return py_obj as string
}
inline bool validMembers(int members) {
// Verify the number of memebers represents a valid vector or matrix type
return members <= 4 && members >= 2;
}
int solveArrayShapeType(PyArrayObject* np_array, int& size) {
npy_intp* shape = PyArray_SHAPE(np_array);
int ndim = PyArray_NDIM(np_array);
switch (ndim) {
case 0 || 1: // scalar
size = PyArray_SIZE(np_array);
return 0;
case 2: // vector
if (validMembers(shape[1])) {
size = np_array->dimensions[0];
return shape[1];
}
break;
case 3: // matrix
if (validMembers(shape[1]) && validMembers(shape[2])) {
size = np_array->dimensions[0];
return shape[2] * 10 + shape[1];
}
break;
}
size = PyArray_SIZE(np_array);
return 0;
}
int solveComplexShapeType(PyArrayObject* np_array, int& size) {
npy_intp* shape = PyArray_SHAPE(np_array);
int ndim = PyArray_NDIM(np_array);
switch (ndim) {
case 0: // array with no dimension
size = PyArray_SIZE(np_array);
return 0;
case 1: // vector
if (validMembers(shape[0]))
return shape[0];
break;
case 2: // matrix
if (validMembers(shape[0]) && validMembers(shape[1]))
return shape[1] * 10 + shape[0];
break;
}
size = PyArray_SIZE(np_array);
return 0;
}
template <typename T>
Amino::Any castArrayToType(PyArrayObject* np_array, int size)
{
T* data = (T*)PyArray_DATA(np_array);
if (size < 0)
return *data;
std::initializer_list<T> init(data, data + size);
Amino::Array<T> amino_array(init);
auto array_ptr = Amino::newClassPtr<Amino::Array<T>>(std::move(amino_array));
return array_ptr;
}
Amino::Any castToObjectArray(PyArrayObject* np_array, int size)
{
Amino::Array<PtrBob> amino_array(size);
for (int i = 0; i < size; i++) {
auto py_item = PyArray_GETITEM(np_array, PyArray_GETPTR1(np_array, i));
amino_array[i] = FromPython::toSimple<PtrBob>(py_item);
Py_CLEAR(py_item);
}
auto array_ptr = Amino::newClassPtr<Amino::Array<PtrBob>>(std::move(amino_array));
return array_ptr;
}
Amino::Any castToStringArray(PyArrayObject* np_array, int size)
{
Amino::Array<Amino::String> amino_array(size);
for (int i = 0; i < size; i++) {
auto py_item = PyArray_GETITEM(np_array, PyArray_GETPTR1(np_array, i));
amino_array[i] = FromPython::toSimple<Amino::String>(py_item);
Py_CLEAR(py_item);
}
auto array_ptr = Amino::newClassPtr<Amino::Array<Amino::String>>(std::move(amino_array));
return array_ptr;
}
Amino::Any arrayToAny(PyObject* py_obj)
{
PyArrayObject* np_array = reinterpret_cast<PyArrayObject*>(py_obj);
int size = -1; int shape_type;
bool has_md = (bool)np_array->descr->metadata;
if (has_md)
shape_type = solveComplexShapeType(np_array, size);
else
shape_type = solveArrayShapeType(np_array, size);
switch (np_array->descr->type_num) {
case NPY_OBJECT:
size = PyArray_SIZE(np_array);
if (size == 0) { // If empty we refer to metadata to determine type
if (has_md)
return castToStringArray(np_array, size);
else
return castToObjectArray(np_array, size);
}
else { // Else we check the first element's type
auto first = PyArray_GETITEM(np_array, PyArray_GETPTR1(np_array, 0));
bool is_dict = PyDict_Check(first);
Py_CLEAR(first);
if (is_dict)
return castToObjectArray(np_array, size);
else
return castToStringArray(np_array, size);
}
case NPY_UNICODE:
return castToStringArray(np_array, PyArray_SIZE(np_array));
case NPY_STRING:
return castToStringArray(np_array, PyArray_SIZE(np_array));
case NPY_FLOAT:
switch (shape_type) {
case 0: return castArrayToType<float>(np_array, size);
case 2: return castArrayToType<Bifrost::Math::float2>(np_array, size);
case 3: return castArrayToType<Bifrost::Math::float3>(np_array, size);
case 4: return castArrayToType<Bifrost::Math::float4>(np_array, size);
case 22: return castArrayToType<Bifrost::Math::float2x2>(np_array, size);
case 23: return castArrayToType<Bifrost::Math::float2x3>(np_array, size);
case 24: return castArrayToType<Bifrost::Math::float2x4>(np_array, size);
case 32: return castArrayToType<Bifrost::Math::float3x2>(np_array, size);
case 33: return castArrayToType<Bifrost::Math::float3x3>(np_array, size);
case 34: return castArrayToType<Bifrost::Math::float3x4>(np_array, size);
case 42: return castArrayToType<Bifrost::Math::float4x2>(np_array, size);
case 43: return castArrayToType<Bifrost::Math::float4x3>(np_array, size);
case 44: return castArrayToType<Bifrost::Math::float4x4>(np_array, size);
}
case NPY_DOUBLE:
switch (shape_type) {
case 0: return castArrayToType<double>(np_array, size);
case 2: return castArrayToType<Bifrost::Math::double2>(np_array, size);
case 3: return castArrayToType<Bifrost::Math::double3>(np_array, size);
case 4: return castArrayToType<Bifrost::Math::double4>(np_array, size);
case 22: return castArrayToType<Bifrost::Math::double2x2>(np_array, size);
case 23: return castArrayToType<Bifrost::Math::double2x3>(np_array, size);
case 24: return castArrayToType<Bifrost::Math::double2x4>(np_array, size);
case 32: return castArrayToType<Bifrost::Math::double3x2>(np_array, size);
case 33: return castArrayToType<Bifrost::Math::double3x3>(np_array, size);
case 34: return castArrayToType<Bifrost::Math::double3x4>(np_array, size);
case 42: return castArrayToType<Bifrost::Math::double4x2>(np_array, size);
case 43: return castArrayToType<Bifrost::Math::double4x3>(np_array, size);
case 44: return castArrayToType<Bifrost::Math::double4x4>(np_array, size);
}
case NPY_LONGLONG:
switch (shape_type) {
case 0: return castArrayToType<long long>(np_array, size);
case 2: return castArrayToType<Bifrost::Math::long2>(np_array, size);
case 3: return castArrayToType<Bifrost::Math::long3>(np_array, size);
case 4: return castArrayToType<Bifrost::Math::long4>(np_array, size);
case 22: return castArrayToType<Bifrost::Math::long2x2>(np_array, size);
case 23: return castArrayToType<Bifrost::Math::long2x3>(np_array, size);
case 24: return castArrayToType<Bifrost::Math::long2x4>(np_array, size);
case 32: return castArrayToType<Bifrost::Math::long3x2>(np_array, size);
case 33: return castArrayToType<Bifrost::Math::long3x3>(np_array, size);
case 34: return castArrayToType<Bifrost::Math::long3x4>(np_array, size);
case 42: return castArrayToType<Bifrost::Math::long4x2>(np_array, size);
case 43: return castArrayToType<Bifrost::Math::long4x3>(np_array, size);
case 44: return castArrayToType<Bifrost::Math::long4x4>(np_array, size);
}
case NPY_ULONGLONG:
switch (shape_type) {
case 0: return castArrayToType<ulong>(np_array, size);
case 2: return castArrayToType<Bifrost::Math::ulong2>(np_array, size);
case 3: return castArrayToType<Bifrost::Math::ulong3>(np_array, size);
case 4: return castArrayToType<Bifrost::Math::ulong4>(np_array, size);
case 22: return castArrayToType<Bifrost::Math::ulong2x2>(np_array, size);
case 23: return castArrayToType<Bifrost::Math::ulong2x3>(np_array, size);
case 24: return castArrayToType<Bifrost::Math::ulong2x4>(np_array, size);
case 32: return castArrayToType<Bifrost::Math::ulong3x2>(np_array, size);
case 33: return castArrayToType<Bifrost::Math::ulong3x3>(np_array, size);
case 34: return castArrayToType<Bifrost::Math::ulong3x4>(np_array, size);
case 42: return castArrayToType<Bifrost::Math::ulong4x2>(np_array, size);
case 43: return castArrayToType<Bifrost::Math::ulong4x3>(np_array, size);
case 44: return castArrayToType<Bifrost::Math::ulong4x4>(np_array, size);
}
case NPY_INT:
case NPY_LONG:
switch (shape_type) {
case 0: return castArrayToType<int>(np_array, size);
case 2: return castArrayToType<Bifrost::Math::int2>(np_array, size);
case 3: return castArrayToType<Bifrost::Math::int3>(np_array, size);
case 4: return castArrayToType<Bifrost::Math::int4>(np_array, size);
case 22: return castArrayToType<Bifrost::Math::int2x2>(np_array, size);
case 23: return castArrayToType<Bifrost::Math::int2x3>(np_array, size);
case 24: return castArrayToType<Bifrost::Math::int2x4>(np_array, size);
case 32: return castArrayToType<Bifrost::Math::int3x2>(np_array, size);
case 33: return castArrayToType<Bifrost::Math::int3x3>(np_array, size);
case 34: return castArrayToType<Bifrost::Math::int3x4>(np_array, size);
case 42: return castArrayToType<Bifrost::Math::int4x2>(np_array, size);
case 43: return castArrayToType<Bifrost::Math::int4x3>(np_array, size);
case 44: return castArrayToType<Bifrost::Math::int4x4>(np_array, size);
}
case NPY_UINT:
case NPY_ULONG:
switch (shape_type) {
case 0: return castArrayToType<uint>(np_array, size);
case 2: return castArrayToType<Bifrost::Math::uint2>(np_array, size);
case 3: return castArrayToType<Bifrost::Math::uint3>(np_array, size);
case 4: return castArrayToType<Bifrost::Math::uint4>(np_array, size);
case 22: return castArrayToType<Bifrost::Math::uint2x2>(np_array, size);
case 23: return castArrayToType<Bifrost::Math::uint2x3>(np_array, size);
case 24: return castArrayToType<Bifrost::Math::uint2x4>(np_array, size);
case 32: return castArrayToType<Bifrost::Math::uint3x2>(np_array, size);
case 33: return castArrayToType<Bifrost::Math::uint3x3>(np_array, size);
case 34: return castArrayToType<Bifrost::Math::uint3x4>(np_array, size);
case 42: return castArrayToType<Bifrost::Math::uint4x2>(np_array, size);
case 43: return castArrayToType<Bifrost::Math::uint4x3>(np_array, size);
case 44: return castArrayToType<Bifrost::Math::uint4x4>(np_array, size);
}
case NPY_SHORT:
switch (shape_type) {
case 0: return castArrayToType<short>(np_array, size);
case 2: return castArrayToType<Bifrost::Math::short2>(np_array, size);
case 3: return castArrayToType<Bifrost::Math::short3>(np_array, size);
case 4: return castArrayToType<Bifrost::Math::short4>(np_array, size);
case 22: return castArrayToType<Bifrost::Math::short2x2>(np_array, size);
case 23: return castArrayToType<Bifrost::Math::short2x3>(np_array, size);
case 24: return castArrayToType<Bifrost::Math::short2x4>(np_array, size);
case 32: return castArrayToType<Bifrost::Math::short3x2>(np_array, size);
case 33: return castArrayToType<Bifrost::Math::short3x3>(np_array, size);
case 34: return castArrayToType<Bifrost::Math::short3x4>(np_array, size);
case 42: return castArrayToType<Bifrost::Math::short4x2>(np_array, size);
case 43: return castArrayToType<Bifrost::Math::short4x3>(np_array, size);
case 44: return castArrayToType<Bifrost::Math::short4x4>(np_array, size);
}
case NPY_USHORT:
switch (shape_type) {
case 0: return castArrayToType<ushort>(np_array, size);
case 2: return castArrayToType<Bifrost::Math::ushort2>(np_array, size);
case 3: return castArrayToType<Bifrost::Math::ushort3>(np_array, size);
case 4: return castArrayToType<Bifrost::Math::ushort4>(np_array, size);
case 22: return castArrayToType<Bifrost::Math::ushort2x2>(np_array, size);
case 23: return castArrayToType<Bifrost::Math::ushort2x3>(np_array, size);
case 24: return castArrayToType<Bifrost::Math::ushort2x4>(np_array, size);
case 32: return castArrayToType<Bifrost::Math::ushort3x2>(np_array, size);
case 33: return castArrayToType<Bifrost::Math::ushort3x3>(np_array, size);
case 34: return castArrayToType<Bifrost::Math::ushort3x4>(np_array, size);
case 42: return castArrayToType<Bifrost::Math::ushort4x2>(np_array, size);
case 43: return castArrayToType<Bifrost::Math::ushort4x3>(np_array, size);
case 44: return castArrayToType<Bifrost::Math::ushort4x4>(np_array, size);
}
case NPY_BYTE:
switch (shape_type) {
case 0: return castArrayToType<signed char>(np_array, size);
case 2: return castArrayToType<Bifrost::Math::char2>(np_array, size);
case 3: return castArrayToType<Bifrost::Math::char3>(np_array, size);
case 4: return castArrayToType<Bifrost::Math::char4>(np_array, size);
case 22: return castArrayToType<Bifrost::Math::char2x2>(np_array, size);
case 23: return castArrayToType<Bifrost::Math::char2x3>(np_array, size);
case 24: return castArrayToType<Bifrost::Math::char2x4>(np_array, size);
case 32: return castArrayToType<Bifrost::Math::char3x2>(np_array, size);
case 33: return castArrayToType<Bifrost::Math::char3x3>(np_array, size);
case 34: return castArrayToType<Bifrost::Math::char3x4>(np_array, size);
case 42: return castArrayToType<Bifrost::Math::char4x2>(np_array, size);
case 43: return castArrayToType<Bifrost::Math::char4x3>(np_array, size);
case 44: return castArrayToType<Bifrost::Math::char4x4>(np_array, size);
}
case NPY_UBYTE:
switch (shape_type) {
case 0: return castArrayToType<uchar>(np_array, size);
case 2: return castArrayToType<Bifrost::Math::uchar2>(np_array, size);
case 3: return castArrayToType<Bifrost::Math::uchar3>(np_array, size);
case 4: return castArrayToType<Bifrost::Math::uchar4>(np_array, size);
case 22: return castArrayToType<Bifrost::Math::uchar2x2>(np_array, size);
case 23: return castArrayToType<Bifrost::Math::uchar2x3>(np_array, size);
case 24: return castArrayToType<Bifrost::Math::uchar2x4>(np_array, size);
case 32: return castArrayToType<Bifrost::Math::uchar3x2>(np_array, size);
case 33: return castArrayToType<Bifrost::Math::uchar3x3>(np_array, size);
case 34: return castArrayToType<Bifrost::Math::uchar3x4>(np_array, size);
case 42: return castArrayToType<Bifrost::Math::uchar4x2>(np_array, size);
case 43: return castArrayToType<Bifrost::Math::uchar4x3>(np_array, size);
case 44: return castArrayToType<Bifrost::Math::uchar4x4>(np_array, size);
}
case NPY_BOOL:
switch (shape_type) {
case 0: return castArrayToType<bool>(np_array, size);
case 2: return castArrayToType<Bifrost::Math::bool2>(np_array, size);
case 3: return castArrayToType<Bifrost::Math::bool3>(np_array, size);
case 4: return castArrayToType<Bifrost::Math::bool4>(np_array, size);
case 22: return castArrayToType<Bifrost::Math::bool2x2>(np_array, size);
case 23: return castArrayToType<Bifrost::Math::bool2x3>(np_array, size);
case 24: return castArrayToType<Bifrost::Math::bool2x4>(np_array, size);
case 32: return castArrayToType<Bifrost::Math::bool3x2>(np_array, size);
case 33: return castArrayToType<Bifrost::Math::bool3x3>(np_array, size);
case 34: return castArrayToType<Bifrost::Math::bool3x4>(np_array, size);
case 42: return castArrayToType<Bifrost::Math::bool4x2>(np_array, size);
case 43: return castArrayToType<Bifrost::Math::bool4x3>(np_array, size);
case 44: return castArrayToType<Bifrost::Math::bool4x4>(np_array, size);
}
}
return FromPython::toSimple<Amino::String>(PyObject_Str(py_obj));
}
}
Amino::Any anyFromPy(PyObject* py_obj)
{
if (Py_IS_TYPE(py_obj, &PyDict_Type))
return FromPython::toSimple<PtrBob>(py_obj);
else if (Py_IS_TYPE(py_obj, &PyUnicode_Type))
return FromPython::toSimple<Amino::String>(py_obj);
else if (PyArray_CheckScalar(py_obj))
return FromNumpy::toScalar(py_obj);
else if (PyArray_Check(py_obj))
return FromNumpy::arrayToAny(py_obj);
else if (Py_IS_TYPE(py_obj, &PyFloat_Type))
return FromPython::toSimple<float>(py_obj);
else if (Py_IS_TYPE(py_obj, &PyLong_Type))
return FromPython::toSimple<long long>(py_obj);
else if (Py_IS_TYPE(py_obj, &PyBool_Type))
return FromPython::toSimple<bool>(py_obj);
else if (Py_IS_TYPE(py_obj, &PyList_Type) || Py_IS_TYPE(py_obj, &PyTuple_Type))
return FromPython::anyFromSequence(py_obj);
return FromPython::toSimple<Amino::String>(PyObject_Str(py_obj));
}