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// Copyright (C) 2016 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
#include "pysideweakref.h"
#include <sbkpython.h>
#include <shiboken.h>
struct PySideCallableObject {
PyObject_HEAD
/* Type-specific fields go here. */
PySideWeakRefFunction weakref_func;
void *user_data;
};
static PyObject *CallableObject_call(PyObject *callable_object, PyObject *args, PyObject *kw);
static PyTypeObject *createCallableObjectType()
{
PyType_Slot PySideCallableObjectType_slots[] = {
{Py_tp_call, reinterpret_cast<void *>(CallableObject_call)},
{Py_tp_dealloc, reinterpret_cast<void *>(Sbk_object_dealloc)},
{0, nullptr}
};
PyType_Spec PySideCallableObjectType_spec = {
"1:PySide.Callable",
sizeof(PySideCallableObject),
0,
Py_TPFLAGS_DEFAULT,
PySideCallableObjectType_slots,
};
return SbkType_FromSpec(&PySideCallableObjectType_spec);
}
static PyTypeObject *PySideCallableObject_TypeF()
{
static auto *type = createCallableObjectType();
return type;
}
static PyObject *CallableObject_call(PyObject *callable_object, PyObject *args, PyObject * /* kw */)
{
PySideCallableObject *obj = reinterpret_cast<PySideCallableObject *>(callable_object);
obj->weakref_func(obj->user_data);
Py_XDECREF(PyTuple_GET_ITEM(args, 0)); //kill weak ref object
Py_RETURN_NONE;
}
namespace PySide::WeakRef {
PyObject *create(PyObject *obj, PySideWeakRefFunction func, void *userData)
{
if (obj == Py_None)
return nullptr;
auto *callableObject_Type = PySideCallableObject_TypeF();
auto *callableObject_PyObject = reinterpret_cast<PyObject *>(callableObject_Type);
if (callableObject_PyObject->ob_type == nullptr) {
callableObject_PyObject->ob_type = &PyType_Type;
PyType_Ready(callableObject_Type);
}
PyTypeObject *type = PySideCallableObject_TypeF();
PySideCallableObject *callable = PyObject_New(PySideCallableObject, type);
if (!callable || PyErr_Occurred())
return nullptr;
PyObject *weak = PyWeakref_NewRef(obj, reinterpret_cast<PyObject *>(callable));
if (!weak || PyErr_Occurred())
return nullptr;
callable->weakref_func = func;
callable->user_data = userData;
Py_DECREF(callable); // PYSIDE-79: after decref the callable is undefined (theoretically)
return reinterpret_cast<PyObject *>(weak);
}
} // namespace PySide::WeakRef
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