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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt for Python.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "pysideweakref.h"
#include <sbkpython.h>
#include <shiboken.h>
typedef struct {
PyObject_HEAD
/* Type-specific fields go here. */
PySideWeakRefFunction weakref_func;
void *user_data;
} PySideCallableObject;
static PyObject *CallableObject_call(PyObject *callable_object, PyObject *args, PyObject *kw);
static PyType_Slot PySideCallableObjectType_slots[] = {
{Py_tp_call, (void *)CallableObject_call},
{Py_tp_dealloc, (void *)Sbk_object_dealloc},
{0, 0}
};
static PyType_Spec PySideCallableObjectType_spec = {
"1:PySide.Callable",
sizeof(PySideCallableObject),
0,
Py_TPFLAGS_DEFAULT,
PySideCallableObjectType_slots,
};
static PyTypeObject *PySideCallableObjectTypeF()
{
static PyTypeObject *type =
reinterpret_cast<PyTypeObject *>(SbkType_FromSpec(&PySideCallableObjectType_spec));
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 { namespace WeakRef {
PyObject *create(PyObject *obj, PySideWeakRefFunction func, void *userData)
{
if (obj == Py_None)
return 0;
if (Py_TYPE(PySideCallableObjectTypeF()) == 0)
{
Py_TYPE(PySideCallableObjectTypeF()) = &PyType_Type;
PyType_Ready(PySideCallableObjectTypeF());
}
PyTypeObject *type = PySideCallableObjectTypeF();
PySideCallableObject *callable = PyObject_New(PySideCallableObject, type);
if (!callable || PyErr_Occurred())
return 0;
PyObject *weak = PyWeakref_NewRef(obj, reinterpret_cast<PyObject *>(callable));
if (!weak || PyErr_Occurred())
return 0;
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
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