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// This contains the support for Python objects and Qt's metatype system.
//
// Copyright (c) 2015 Riverbank Computing Limited <info@riverbankcomputing.com>
//
// This file is part of PyQt4.
//
// This file may be used under the terms of the GNU General Public License
// version 3.0 as published by the Free Software Foundation and appearing in
// the file LICENSE included in the packaging of this file. Please review the
// following information to ensure the GNU General Public License version 3.0
// requirements will be met: http://www.gnu.org/copyleft/gpl.html.
//
// If you do not wish to use this file under the terms of the GPL version 3.0
// then you may purchase a commercial license. For more information contact
// info@riverbankcomputing.com.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#include <Python.h>
#include "qpycore_pyqtpyobject.h"
#include "qpycore_sip.h"
// The Qt metatype id.
int PyQt_PyObject::metatype;
// The current pickle protocol.
PyObject *qpycore_pickle_protocol;
// Wrap a Python object.
PyQt_PyObject::PyQt_PyObject(PyObject *py)
{
pyobject = py;
SIP_BLOCK_THREADS
Py_XINCREF(pyobject);
SIP_UNBLOCK_THREADS
}
// Create a new wrapper, with no Python object. This is called by Qt's
// metatype system.
PyQt_PyObject::PyQt_PyObject()
{
pyobject = 0;
}
// Create a copy of an existing wrapper. This is called by Qt's metatype
// system.
PyQt_PyObject::PyQt_PyObject(const PyQt_PyObject &other)
{
pyobject = other.pyobject;
SIP_BLOCK_THREADS
Py_XINCREF(pyobject);
SIP_UNBLOCK_THREADS
}
// Destroy a wrapper.
PyQt_PyObject::~PyQt_PyObject()
{
// Qt can still be tidying up after Python has gone so make sure that it
// hasn't.
if (Py_IsInitialized())
{
SIP_BLOCK_THREADS
Py_XDECREF(pyobject);
SIP_UNBLOCK_THREADS
}
pyobject = 0;
}
// Assignment operator.
PyQt_PyObject &PyQt_PyObject::operator=(const PyQt_PyObject &other)
{
pyobject = other.pyobject;
SIP_BLOCK_THREADS
Py_XINCREF(pyobject);
SIP_UNBLOCK_THREADS
return *this;
}
// Serialise operator.
QDataStream &operator<<(QDataStream &out, const PyQt_PyObject &obj)
{
PyObject *ser_obj = 0;
const char *ser = 0;
uint len = 0;
if (obj.pyobject)
{
static PyObject *dumps = 0;
SIP_BLOCK_THREADS
if (!dumps)
{
PyObject *pickle = PyImport_ImportModule("pickle");
if (pickle)
{
dumps = PyObject_GetAttrString(pickle, "dumps");
Py_DECREF(pickle);
}
}
if (dumps)
{
if (!qpycore_pickle_protocol)
{
Py_INCREF(Py_None);
qpycore_pickle_protocol = Py_None;
}
ser_obj = PyObject_CallFunctionObjArgs(dumps, obj.pyobject,
qpycore_pickle_protocol, 0);
if (ser_obj)
{
if (SIPBytes_Check(ser_obj))
{
ser = SIPBytes_AS_STRING(ser_obj);
len = SIPBytes_GET_SIZE(ser_obj);
}
else
{
Py_DECREF(ser_obj);
ser_obj = 0;
}
}
else
{
PyErr_Print();
}
}
SIP_UNBLOCK_THREADS
}
out.writeBytes(ser, len);
if (ser_obj)
{
SIP_BLOCK_THREADS
Py_DECREF(ser_obj);
SIP_UNBLOCK_THREADS
}
return out;
}
// De-serialise operator.
QDataStream &operator>>(QDataStream &in, PyQt_PyObject &obj)
{
char *ser;
uint len;
in.readBytes(ser, len);
if (len)
{
static PyObject *loads = 0;
SIP_BLOCK_THREADS
if (!loads)
{
PyObject *pickle = PyImport_ImportModule("pickle");
if (pickle)
{
loads = PyObject_GetAttrString(pickle, "loads");
Py_DECREF(pickle);
}
}
if (loads)
{
PyObject *ser_obj = SIPBytes_FromStringAndSize(ser, len);
if (ser_obj)
{
obj.pyobject = PyObject_CallFunctionObjArgs(loads, ser_obj, 0);
Py_DECREF(ser_obj);
}
}
SIP_UNBLOCK_THREADS
}
delete[] ser;
return in;
}
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