PothosPython/PythonConvert.cpp at master · pothosware/PothosPython · GitHub

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// 2019-2021 Nicholas Corgan

// SPDX-License-Identifier: BSL-1.0

#include <Pothos/Plugin.hpp>

#include <cassert>

#include <complex>

#include <iostream>

#include <type_traits>

#include <Poco/Types.h>

#include "PythonProxy.hpp"

/***********************************************************************

* SFINAE typedefs

**********************************************************************/

template <typename T, typename U>

using EnableIfUnsigned = typename std::enable_if<std::is_unsigned<T>::value && (sizeof(T) < 8), U>::type;

template <typename T, typename U>

using EnableIfSigned = typename std::enable_if<std::is_signed<T>::value && (sizeof(T) < 8), U>::type;

template <typename T, typename U>

using EnableIfUnsigned64 = typename std::enable_if<std::is_unsigned<T>::value && (sizeof(T) == 8), U>::type;

template <typename T, typename U>

using EnableIfSigned64 = typename std::enable_if<std::is_signed<T>::value && (sizeof(T) == 8), U>::type;

/***********************************************************************

* Object -- Allow the use of native python objects.

* When Pothos::Object is used in the C++ API as a return or field,

* it will arrive to the converter as an Object containing an Object.

* This converter handles un-nesting the object into a native PyObject.

* If the conversion fails, then convertObjectToProxy() simply wraps

* the object into a managed Proxy that can be handled by "ProxyType".

**********************************************************************/

static Pothos::Proxy convertObjectToPyObject(Pothos::ProxyEnvironment::Sptr env, const Pothos::Object &obj)

{

return env->convertObjectToProxy(obj);

}

pothos_static_block(pothosRegisterPythonObjectConversions)

{

Pothos::PluginRegistry::addCall("/proxy/converters/python/object_to_pyobject", &convertObjectToPyObject);

}

/***********************************************************************

* None

**********************************************************************/

static Pothos::Proxy convertNullToPyNone(Pothos::ProxyEnvironment::Sptr env, const Pothos::NullObject &)

{

return std::dynamic_pointer_cast<PythonProxyEnvironment>(env)->makeHandle(Py_None, REF_BORROWED);

}

static Pothos::NullObject convertPyNoneToNull(const Pothos::Proxy &)

{

return Pothos::NullObject();

}

pothos_static_block(pothosRegisterPythonNullConversions)

{

Pothos::PluginRegistry::addCall("/proxy/converters/python/null_to_pynone",

&convertNullToPyNone);

Pothos::PluginRegistry::add("/proxy/converters/python/pynone_to_null",

Pothos::ProxyConvertPair("NoneType", &convertPyNoneToNull));

}

/***********************************************************************

* bool

**********************************************************************/

static Pothos::Proxy convertBoolToPyBool(Pothos::ProxyEnvironment::Sptr env, const bool &b)

{

return std::dynamic_pointer_cast<PythonProxyEnvironment>(env)->makeHandle(PyBool_FromLong(b), REF_NEW);

}

static bool convertPyBoolToBool(const Pothos::Proxy &proxy)

{

return bool(std::dynamic_pointer_cast<PythonProxyHandle>(proxy.getHandle())->obj == Py_True);

}

pothos_static_block(pothosRegisterPythonBoolConversions)

{

Pothos::PluginRegistry::addCall("/proxy/converters/python/bool_to_pybool",

&convertBoolToPyBool);

Pothos::PluginRegistry::add("/proxy/converters/python/pybool_to_bool",

Pothos::ProxyConvertPair("bool", &convertPyBoolToBool));

}

/***********************************************************************

* integer/long types

**********************************************************************/

template <typename T>

static EnableIfSigned<T, Pothos::Proxy> convertIntNumToPyNum(Pothos::ProxyEnvironment::Sptr env, const T &num)

{

#if PY_MAJOR_VERSION >= 3

return std::dynamic_pointer_cast<PythonProxyEnvironment>(env)->makeHandle(PyLong_FromLong(long(num)), REF_NEW);

#else

return std::dynamic_pointer_cast<PythonProxyEnvironment>(env)->makeHandle(PyInt_FromLong(long(num)), REF_NEW);

#endif

}

template <typename T>

static EnableIfUnsigned<T, Pothos::Proxy> convertIntNumToPyNum(Pothos::ProxyEnvironment::Sptr env, const T &num)

{

#if PY_MAJOR_VERSION >= 3

return std::dynamic_pointer_cast<PythonProxyEnvironment>(env)->makeHandle(PyLong_FromUnsignedLong((unsigned long)(num)), REF_NEW);

#else

return std::dynamic_pointer_cast<PythonProxyEnvironment>(env)->makeHandle(PyInt_FromSize_t((size_t)(num)), REF_NEW);

#endif

}

template <typename T>

static EnableIfSigned64<T, Pothos::Proxy> convertIntNumToPyNum(Pothos::ProxyEnvironment::Sptr env, const T &num)

{

return std::dynamic_pointer_cast<PythonProxyEnvironment>(env)->makeHandle(PyLong_FromLongLong((long long)num), REF_NEW);

}

template <typename T>

static EnableIfUnsigned64<T, Pothos::Proxy> convertIntNumToPyNum(Pothos::ProxyEnvironment::Sptr env, const T &num)

{

return std::dynamic_pointer_cast<PythonProxyEnvironment>(env)->makeHandle(PyLong_FromUnsignedLongLong((unsigned long long)num), REF_NEW);

}

static Pothos::Object convertPyLongToLongLong(const Pothos::Proxy &proxy)

{

//Try to convert to a signed long long,

//however return an unsigned long long in the case of overflow.

//The result is returned as a Pothos::Object to erase the type

//and convertProxyToObject handles this special case.

int overflow(0);

auto obj = std::dynamic_pointer_cast<PythonProxyHandle>(proxy.getHandle())->obj;

auto r = PyLong_AsLongLongAndOverflow(obj, &overflow);

if (overflow) return Pothos::Object(PyLong_AsUnsignedLongLongMask(obj));

return Pothos::Object(r);

}

pothos_static_block(pothosRegisterPythonIntConversions)

{

Pothos::PluginRegistry::addCall("/proxy/converters/python/char_to_pynum",

&convertIntNumToPyNum<char>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/schar_to_pynum",

&convertIntNumToPyNum<signed char>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/uchar_to_pynum",

&convertIntNumToPyNum<unsigned char>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/sshort_to_pynum",

&convertIntNumToPyNum<signed short>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/ushort_to_pynum",

&convertIntNumToPyNum<unsigned short>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/sint_to_pynum",

&convertIntNumToPyNum<signed int>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/uint_to_pynum",

&convertIntNumToPyNum<unsigned int>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/slong_to_pynum",

&convertIntNumToPyNum<signed long>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/ulong_to_pynum",

&convertIntNumToPyNum<unsigned long>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/sllong_to_pynum",

&convertIntNumToPyNum<signed long long>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/ullong_to_pynum",

&convertIntNumToPyNum<unsigned long long>);

Pothos::PluginRegistry::add("/proxy/converters/python/pyint_to_llong",

Pothos::ProxyConvertPair("int", &convertPyLongToLongLong));

//int and long are distinct types in python2, so long gets its own entry

#if PY_MAJOR_VERSION < 3

Pothos::PluginRegistry::add("/proxy/converters/python/pylong_to_llong",

Pothos::ProxyConvertPair("long", &convertPyLongToLongLong));

#endif

}

/***********************************************************************

* float types

**********************************************************************/

template <typename T>

static Pothos::Proxy convertFloatNumToPyFloat(Pothos::ProxyEnvironment::Sptr env, const T &num)

{

return std::dynamic_pointer_cast<PythonProxyEnvironment>(env)->makeHandle(PyFloat_FromDouble(double(num)), REF_NEW);

}

static double convertPyFloatToDouble(const Pothos::Proxy &proxy)

{

return PyFloat_AsDouble(std::dynamic_pointer_cast<PythonProxyHandle>(proxy.getHandle())->obj);

}

pothos_static_block(pothosRegisterPythonFloatConversions)

{

Pothos::PluginRegistry::addCall("/proxy/converters/python/float_to_pyfloat",

&convertFloatNumToPyFloat<float>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/double_to_pyfloat",

&convertFloatNumToPyFloat<double>);

Pothos::PluginRegistry::add("/proxy/converters/python/pyfloat_to_double",

Pothos::ProxyConvertPair("float", &convertPyFloatToDouble));

}

/***********************************************************************

* complex types

**********************************************************************/

template <typename T>

static Pothos::Proxy convertComplexToPyComplex(Pothos::ProxyEnvironment::Sptr env, const std::complex<T> &c)

{

return std::dynamic_pointer_cast<PythonProxyEnvironment>(env)->makeHandle(PyComplex_FromDoubles(double(c.real()), double(c.imag())), REF_NEW);

}

static std::complex<double> convertPyComplexToComplex(const Pothos::Proxy &proxy)

{

auto c = PyComplex_AsCComplex(std::dynamic_pointer_cast<PythonProxyHandle>(proxy.getHandle())->obj);

return std::complex<double>(c.real, c.imag);

}

pothos_static_block(pothosRegisterPythonComplexConversions)

{

Pothos::PluginRegistry::addCall("/proxy/converters/python/complex64_to_pycomplex",

&convertComplexToPyComplex<float>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/complex128_to_pycomplex",

&convertComplexToPyComplex<double>);

Pothos::PluginRegistry::add("/proxy/converters/python/pycomplex_to_complex128",

Pothos::ProxyConvertPair("complex", &convertPyComplexToComplex));

}

/***********************************************************************

* string

**********************************************************************/

static Pothos::Proxy convertStringToPyString(Pothos::ProxyEnvironment::Sptr env, const std::string &s)

{

return std::dynamic_pointer_cast<PythonProxyEnvironment>(env)->makeHandle(StdStringToPyObject(s), REF_NEW);

}

static std::string convertPyStringToString(const Pothos::Proxy &proxy)

{

auto obj = std::dynamic_pointer_cast<PythonProxyHandle>(proxy.getHandle())->obj;

return PyObjToStdString(obj);

}

static Pothos::Proxy convertStrVecToPyList(Pothos::ProxyEnvironment::Sptr env, const std::vector<std::string> &strings)

{

Pothos::ProxyVector vec;

for (const auto &s : strings) vec.push_back(env->makeProxy(s));

return env->makeProxy(vec);

}

pothos_static_block(pothosRegisterPythonStringConversions)

{

Pothos::PluginRegistry::addCall("/proxy/converters/python/string_to_pystring",

&convertStringToPyString);

Pothos::PluginRegistry::add("/proxy/converters/python/pystring_to_string",

Pothos::ProxyConvertPair("str", &convertPyStringToString));

Pothos::PluginRegistry::addCall("/proxy/converters/python/vecstring_to_pylist",

&convertStrVecToPyList);

}

/***********************************************************************

* bytes

**********************************************************************/

template <typename ByteType>

Pothos::Proxy convertByteVectorToPyBytes(Pothos::ProxyEnvironment::Sptr env, const std::vector<ByteType> &vec)

{

auto o = PyBytes_FromStringAndSize(reinterpret_cast<const char *>(vec.data()), vec.size());

return std::dynamic_pointer_cast<PythonProxyEnvironment>(env)->makeHandle(o, REF_NEW);

}

static std::vector<char> convertPyBytesToString(const Pothos::Proxy &proxy)

{

auto obj = std::dynamic_pointer_cast<PythonProxyHandle>(proxy.getHandle())->obj;

auto c = PyBytes_AsString(obj);

return std::vector<char>(c, c+PyBytes_Size(obj));

}

static std::vector<char> convertPyByteArrayToString(const Pothos::Proxy &proxy)

{

auto obj = std::dynamic_pointer_cast<PythonProxyHandle>(proxy.getHandle())->obj;

auto c = PyByteArray_AsString(obj);

return std::vector<char>(c, c+PyByteArray_Size(obj));

}

pothos_static_block(pothosRegisterPythonBytesConversions)

{

Pothos::PluginRegistry::addCall("/proxy/converters/python/vecchar_to_pybytes",

&convertByteVectorToPyBytes<char>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/vecschar_to_pybytes",

&convertByteVectorToPyBytes<signed char>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/vecuchar_to_pybytes",

&convertByteVectorToPyBytes<unsigned char>);

Pothos::PluginRegistry::add("/proxy/converters/python/pybytes_to_string",

Pothos::ProxyConvertPair("bytes", &convertPyBytesToString));

Pothos::PluginRegistry::add("/proxy/converters/python/pybytearray_to_string",

Pothos::ProxyConvertPair("bytearray", &convertPyByteArrayToString));

}

/***********************************************************************

* numeric

**********************************************************************/

template <typename T>

static Pothos::Proxy convertIntVectorToPyList(Pothos::ProxyEnvironment::Sptr env, const std::vector<T> &vec)

{

auto pyenv = std::dynamic_pointer_cast<PythonProxyEnvironment>(env);

PyObjectRef pyList(PyList_New(vec.size()), REF_NEW);

for (size_t i = 0; i < vec.size(); i++)

{

#if PY_MAJOR_VERSION >= 3

PyList_SetItem(pyList.obj, i, PyLong_FromLong(long(vec[i])));

#else

PyList_SetItem(pyList.obj, i, PyInt_FromLong(long(vec[i])));

#endif

}

return pyenv->makeHandle(pyList);

}

template <typename T>

static Pothos::Proxy convertLongLongVectorToPyList(Pothos::ProxyEnvironment::Sptr env, const std::vector<T> &vec)

{

auto pyenv = std::dynamic_pointer_cast<PythonProxyEnvironment>(env);

PyObjectRef pyList(PyList_New(vec.size()), REF_NEW);

for (size_t i = 0; i < vec.size(); i++)

{

PyList_SetItem(pyList.obj, i, PyLong_FromLongLong((long long)(vec[i])));

}

return pyenv->makeHandle(pyList);

}

template <typename T>

static Pothos::Proxy convertFloatVectorToPyList(Pothos::ProxyEnvironment::Sptr env, const std::vector<T> &vec)

{

auto pyenv = std::dynamic_pointer_cast<PythonProxyEnvironment>(env);

PyObjectRef pyList(PyList_New(vec.size()), REF_NEW);

for (size_t i = 0; i < vec.size(); i++)

{

PyList_SetItem(pyList.obj, i, PyFloat_FromDouble(double(vec[i])));

}

return pyenv->makeHandle(pyList);

}

template <typename T>

static Pothos::Proxy convertComplexVectorToPyList(Pothos::ProxyEnvironment::Sptr env, const std::vector<std::complex<T>> &vec)

{

auto pyenv = std::dynamic_pointer_cast<PythonProxyEnvironment>(env);

PyObjectRef pyList(PyList_New(vec.size()), REF_NEW);

for (size_t i = 0; i < vec.size(); i++)

{

PyList_SetItem(pyList.obj, i, PyComplex_FromDoubles(double(vec[i].real()), double(vec[i].imag())));

}

return pyenv->makeHandle(pyList);

}

pothos_static_block(pothosRegisterPythonNumericConversions)

{

Pothos::PluginRegistry::addCall("/proxy/converters/python/vecsshort_to_pylist",

&convertIntVectorToPyList<signed short>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/vecushort_to_pylist",

&convertIntVectorToPyList<unsigned short>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/vecsint_to_pylist",

&convertIntVectorToPyList<signed int>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/vecuint_to_pylist",

&convertIntVectorToPyList<unsigned int>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/vecslong_to_pylist",

&convertIntVectorToPyList<signed long>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/veculong_to_pylist",

&convertIntVectorToPyList<unsigned long>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/vecsllong_to_pylist",

&convertLongLongVectorToPyList<signed long long>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/vecullong_to_pylist",

&convertLongLongVectorToPyList<unsigned long long>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/vecfloat_to_pylist",

&convertFloatVectorToPyList<float>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/vecdouble_to_pylist",

&convertFloatVectorToPyList<double>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/veccomplexfloat_to_pylist",

&convertComplexVectorToPyList<float>);

Pothos::PluginRegistry::addCall("/proxy/converters/python/veccomplexdouble_to_pylist",

&convertComplexVectorToPyList<double>);

}

/***********************************************************************

* tuple

**********************************************************************/

static Pothos::ProxyVector convertPyTupleToVector(const Pothos::Proxy &proxy)

{

auto env = std::dynamic_pointer_cast<PythonProxyEnvironment>(proxy.getEnvironment());

auto obj = std::dynamic_pointer_cast<PythonProxyHandle>(proxy.getHandle())->obj;

Pothos::ProxyVector vec(PyTuple_Size(obj));

for (size_t i = 0; i < vec.size(); i++)

{

vec[i] = env->makeHandle(PyTuple_GetItem(obj, i), REF_BORROWED);

}

return vec;

}

pothos_static_block(pothosRegisterPythonTupleConversions)

{

Pothos::PluginRegistry::add("/proxy/converters/python/pytuple_to_vector",

Pothos::ProxyConvertPair("tuple", &convertPyTupleToVector));

}

/***********************************************************************

* list

**********************************************************************/

static Pothos::Proxy convertVectorToPyList(Pothos::ProxyEnvironment::Sptr env, const Pothos::ProxyVector &vec)

{

auto pyenv = std::dynamic_pointer_cast<PythonProxyEnvironment>(env);

PyObjectRef pyList(PyList_New(vec.size()), REF_NEW);

for (size_t i = 0; i < vec.size(); i++)

{

PyList_SetItem(pyList.obj, i, pyenv->getHandle(vec[i])->ref.newRef());

}

return pyenv->makeHandle(pyList);

}

static Pothos::ProxyVector convertPyListToVector(const Pothos::Proxy &proxy)

{

auto env = std::dynamic_pointer_cast<PythonProxyEnvironment>(proxy.getEnvironment());

auto obj = std::dynamic_pointer_cast<PythonProxyHandle>(proxy.getHandle())->obj;

Pothos::ProxyVector vec(PyList_Size(obj));

for (size_t i = 0; i < vec.size(); i++)

{

vec[i] = env->makeHandle(PyList_GetItem(obj, i), REF_BORROWED);

}

return vec;

}

pothos_static_block(pothosRegisterPythonListConversions)

{

Pothos::PluginRegistry::addCall("/proxy/converters/python/vector_to_pylist",

&convertVectorToPyList);

Pothos::PluginRegistry::add("/proxy/converters/python/pylist_to_vector",

Pothos::ProxyConvertPair("list", &convertPyListToVector));

}

/***********************************************************************

* set

**********************************************************************/

static Pothos::Proxy convertSetToPySet(Pothos::ProxyEnvironment::Sptr env, const Pothos::ProxySet &set)

{

auto pyenv = std::dynamic_pointer_cast<PythonProxyEnvironment>(env);

PyObjectRef pySet(PySet_New(nullptr), REF_NEW);

for (const auto &entry : set)

{

auto obj = pyenv->getHandle(entry)->obj;

PySet_Add(pySet.obj, obj);

}

return pyenv->makeHandle(pySet);

}

static Pothos::ProxySet convertPySetToSet(const Pothos::Proxy &proxy)

{

auto env = std::dynamic_pointer_cast<PythonProxyEnvironment>(proxy.getEnvironment());

auto obj = std::dynamic_pointer_cast<PythonProxyHandle>(proxy.getHandle())->obj;

auto pySet = PySet_New(obj); //makes a copy which we pop from until empty

Pothos::ProxySet set;

while (PySet_Size(pySet) != 0)

{

set.insert(env->makeHandle(PySet_Pop(pySet), REF_NEW));

}

return set;

}

pothos_static_block(pothosRegisterPythonSetConversions)

{

Pothos::PluginRegistry::addCall("/proxy/converters/python/set_to_pyset",

&convertSetToPySet);

Pothos::PluginRegistry::add("/proxy/converters/python/pyset_to_set",

Pothos::ProxyConvertPair("set", &convertPySetToSet));

Pothos::PluginRegistry::add("/proxy/converters/python/pyfrozenset_to_set",

Pothos::ProxyConvertPair("frozenset", &convertPySetToSet));

}

/***********************************************************************

* dict

**********************************************************************/

static Pothos::Proxy convertMapToPyDict(Pothos::ProxyEnvironment::Sptr env, const Pothos::ProxyMap &d)

{

auto pyenv = std::dynamic_pointer_cast<PythonProxyEnvironment>(env);

PyObjectRef pyDict(PyDict_New(), REF_NEW);

for (const auto &entry : d) PyDict_SetItem(

pyDict.obj,

pyenv->getHandle(entry.first.getHandle())->obj,

pyenv->getHandle(entry.second.getHandle())->obj);

return pyenv->makeHandle(pyDict);

}

static Pothos::ProxyMap convertPyDictToMap(const Pothos::Proxy &proxy)

{

auto env = std::dynamic_pointer_cast<PythonProxyEnvironment>(proxy.getEnvironment());

auto obj = std::dynamic_pointer_cast<PythonProxyHandle>(proxy.getHandle())->obj;

Pothos::ProxyMap d;

PyObjectRef items(PyDict_Items(obj), REF_NEW);

for (Py_ssize_t i = 0; i < PyList_Size(items.obj); i++)

{

PyObject *item = PyList_GetItem(items.obj, i);

assert(PyTuple_Check(item) and PyTuple_Size(item) == 2);

auto key = env->makeHandle(PyTuple_GetItem(item, 0), REF_BORROWED);

auto val = env->makeHandle(PyTuple_GetItem(item, 1), REF_BORROWED);

d[key] = val;

}

return d;

}

pothos_static_block(pothosRegisterPythonDictConversions)

{

Pothos::PluginRegistry::addCall("/proxy/converters/python/map_to_pydict",

&convertMapToPyDict);

Pothos::PluginRegistry::add("/proxy/converters/python/pydict_to_map",

Pothos::ProxyConvertPair("dict", &convertPyDictToMap));

}

PothosPython/PythonConvert.cpp at master · pothosware/PothosPython · GitHub

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