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PythonHelpers.h
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PythonHelpers.h
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//********************************************************************************//
// MIT License //
// //
// Copyright (c) 2022 TeamViewer Germany GmbH //
// //
// 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. //
//********************************************************************************//
#pragma once
#include "Typesystem.h"
#include <Python.h>
#include <map>
#include <string>
namespace tvagentapipy
{
extern const char* const InternalError;
PyObject* NoneOrInternalError(bool success);
PyTypeObject* CreateEnumType(
const std::string& enumName,
const std::map<std::string, long>& enumValues);
template <typename SelfType>
PyCFunction PyCFunctionCast(PyObject* (*func)(SelfType*, PyObject*))
{
return reinterpret_cast<PyCFunction>(func);
}
template <typename SelfType>
PyCFunction PyCFunctionCast(PyObject* (*func)(SelfType*, PyObject*, PyObject*))
{
return reinterpret_cast<PyCFunction>(reinterpret_cast<void*>(func));
}
// Returns new reference
PyObject* PyEnumValue(PyTypeObject* pyEnumType, const std::string& enumValueName);
// On internal error sets PyErr which can be checked with PyErr_Occurred()
template<typename EnumType>
EnumType EnumFromPyEnumValue(PyObject* enumValue)
{
PyTypeObject* type = GetPyTypeObject<EnumType>();
if (type != Py_TYPE(enumValue))
{
PyErr_Format(PyExc_TypeError, "expected %R, got %R", type, Py_TYPE(enumValue));
return {};
}
PyObject* pyLong = PyObject_GetAttrString(enumValue, "value");
if (!pyLong)
{
// PyObject_GetAttrString sets PyErr
return {};
}
if (!PyLong_Check(pyLong))
{
Py_DECREF(pyLong);
PyErr_SetString(PyExc_TypeError, "value is not of type long");
return {};
}
EnumType ret = static_cast<EnumType>(PyLong_AsLong(pyLong));
Py_DECREF(pyLong);
return ret;
}
// Returns PyTypeObject with header initialized with PyVarObject_HEAD_INIT and all the
// other fields default initialized to 0
PyTypeObject PyTypeObjectInitialized();
} // namespace tvagentapipy