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// This is the implementation of the Chimera::Storage class.
//
// Copyright (c) 2018 Riverbank Computing Limited <info@riverbankcomputing.com>
//
// This file is part of PyQt5.
//
// 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 <QVariant>
#include "qpycore_chimera.h"
#include "qpycore_pyqtpyobject.h"
#include "sipAPIQtCore.h"
// Create a new storage instance containing a converted Python object.
Chimera::Storage::Storage(const Chimera *ct, PyObject *py)
: _parsed_type(ct), _ptr_storage(0), _tmp_state(0)
{
// We convert to a QVariant even for pointer types because this has the
// side-effect of ensuring the object doesn't get garbage collected.
_valid = _parsed_type->fromPyObject(py, &_value_storage);
if (isPointerType())
{
int is_err = 0;
_ptr_storage = sipForceConvertToType(py, _parsed_type->typeDef(), 0, 0,
&_tmp_state, &is_err);
if (is_err)
{
_value_storage = QVariant();
_valid = false;
}
}
}
// Create a new storage instance.
Chimera::Storage::Storage(const Chimera *ct)
: _parsed_type(ct), _ptr_storage(0), _tmp_state(0), _valid(true)
{
if (!isPointerType())
{
// Create a default fundamental or value type.
_value_storage = QVariant(_parsed_type->metatype(), (const void *)0);
}
}
// Destroy the storage and any temporary value.
Chimera::Storage::~Storage()
{
if (_tmp_state)
sipReleaseType(_ptr_storage, _parsed_type->typeDef(), _tmp_state);
}
// Return the address of the storage.
void *Chimera::Storage::address()
{
if (isPointerType())
{
if (_parsed_type->name().endsWith('*'))
return &_ptr_storage;
return _ptr_storage;
}
if (_parsed_type->typeDef() == sipType_QVariant)
return &_value_storage;
return _value_storage.data();
}
// Return true if the value is a pointer type.
bool Chimera::Storage::isPointerType() const
{
return (_parsed_type->metatype() == PyQt_PyObject::metatype &&
_parsed_type->typeDef());
}
// Convert the stored value to a Python object.
PyObject *Chimera::Storage::toPyObject() const
{
// Pointer-class and mapped types are not stored in the QVariant.
if (isPointerType())
{
if (!_ptr_storage)
{
Py_INCREF(Py_None);
return Py_None;
}
return sipConvertFromType(_ptr_storage, _parsed_type->typeDef(), 0);
}
if (_parsed_type->typeDef() == sipType_QVariant)
return Chimera::toAnyPyObject(_value_storage);
return _parsed_type->toPyObject(_value_storage);
}
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