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/*
* This file is part of the PySide project.
*
* Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
*
* Contact: PySide team <contact@pyside.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <sbkpython.h>
#include "pysidemetafunction.h"
#include "pysidemetafunction_p.h"
#include <shiboken.h>
#include <QObject>
#include <QMetaMethod>
#include <QDebug>
extern "C"
{
struct PySideMetaFunctionPrivate
{
QObject* qobject;
int methodIndex;
};
//methods
static void functionFree(void*);
static PyObject* functionCall(PyObject*, PyObject*, PyObject*);
PyTypeObject PySideMetaFunctionType = {
PyVarObject_HEAD_INIT(0, 0)
/*tp_name*/ "PySide.MetaFunction",
/*tp_basicsize*/ sizeof(PySideMetaFunction),
/*tp_itemsize*/ 0,
/*tp_dealloc*/ 0,
/*tp_print*/ 0,
/*tp_getattr*/ 0,
/*tp_setattr*/ 0,
/*tp_compare*/ 0,
/*tp_repr*/ 0,
/*tp_as_number*/ 0,
/*tp_as_sequence*/ 0,
/*tp_as_mapping*/ 0,
/*tp_hash*/ 0,
/*tp_call*/ functionCall,
/*tp_str*/ 0,
/*tp_getattro*/ 0,
/*tp_setattro*/ 0,
/*tp_as_buffer*/ 0,
/*tp_flags*/ Py_TPFLAGS_DEFAULT,
/*tp_doc*/ "MetaFunction",
/*tp_traverse*/ 0,
/*tp_clear*/ 0,
/*tp_richcompare*/ 0,
/*tp_weaklistoffset*/ 0,
/*tp_iter*/ 0,
/*tp_iternext*/ 0,
/*tp_methods*/ 0,
/*tp_members*/ 0,
/*tp_getset*/ 0,
/*tp_base*/ 0,
/*tp_dict*/ 0,
/*tp_descr_get*/ 0,
/*tp_descr_set*/ 0,
/*tp_dictoffset*/ 0,
/*tp_init*/ 0,
/*tp_alloc*/ 0,
/*tp_new*/ PyType_GenericNew,
/*tp_free*/ functionFree,
/*tp_is_gc*/ 0,
/*tp_bases*/ 0,
/*tp_mro*/ 0,
/*tp_cache*/ 0,
/*tp_subclasses*/ 0,
/*tp_weaklist*/ 0,
/*tp_del*/ 0,
};
void functionFree(void *self)
{
PySideMetaFunction* function = reinterpret_cast<PySideMetaFunction*>(self);
delete function->d;
}
PyObject* functionCall(PyObject* self, PyObject* args, PyObject* kw)
{
PySideMetaFunction* function = reinterpret_cast<PySideMetaFunction*>(self);
PyObject* retVal;
if (!PySide::MetaFunction::call(function->d->qobject, function->d->methodIndex, args, &retVal))
return 0;
return retVal;
}
} // extern "C"
namespace PySide { namespace MetaFunction {
void init(PyObject* module)
{
if (PyType_Ready(&PySideMetaFunctionType) < 0)
return;
PyModule_AddObject(module, "MetaFunction", ((PyObject*)&PySideMetaFunctionType));
}
PySideMetaFunction* newObject(QObject* source, int methodIndex)
{
if (methodIndex >= source->metaObject()->methodCount())
return 0;
QMetaMethod method = source->metaObject()->method(methodIndex);
if ((method.methodType() == QMetaMethod::Slot) ||
(method.methodType() == QMetaMethod::Method)) {
PySideMetaFunction* function = PyObject_New(PySideMetaFunction, &PySideMetaFunctionType);
function->d = new PySideMetaFunctionPrivate();
function->d->qobject = source;
function->d->methodIndex = methodIndex;
return function;
}
return 0;
}
bool call(QObject* self, int methodIndex, PyObject* args, PyObject** retVal)
{
QMetaMethod method = self->metaObject()->method(methodIndex);
QList<QByteArray> argTypes = method.parameterTypes();
// args given plus return type
Shiboken::AutoDecRef sequence(PySequence_Fast(args, 0));
int numArgs = PySequence_Fast_GET_SIZE(sequence.object()) + 1;
if (numArgs - 1 != argTypes.count()) {
PyErr_Format(PyExc_TypeError, "%s only accepts %d arguments, %d given!", method.signature(), argTypes.count(), numArgs);
return false;
}
QVariant* methValues = new QVariant[numArgs];
void** methArgs = new void*[numArgs];
// Prepare room for return type
const char* returnType = method.typeName();
if (returnType)
argTypes.prepend(returnType);
else
argTypes.prepend(QByteArray());
int i;
for (i = 0; i < numArgs; ++i) {
const QByteArray& typeName = argTypes[i];
// This must happen only when the method hasn't return type.
if (typeName.isEmpty()) {
methArgs[i] = 0;
continue;
}
Shiboken::Conversions::SpecificConverter converter(typeName);
if (converter) {
int typeId = QMetaType::type(typeName);
if (!Shiboken::Conversions::pythonTypeIsObjectType(converter)) {
if (!typeId) {
PyErr_Format(PyExc_TypeError, "Value types used on meta functions (including signals) need to be "
"registered on meta type: %s", typeName.data());
break;
}
methValues[i] = QVariant(typeId, (void*) 0);
}
methArgs[i] = methValues[i].data();
if (i == 0) // Don't do this for return type
continue;
if (typeId == QVariant::String) {
QString tmp;
converter.toCpp(PySequence_Fast_GET_ITEM(sequence.object(), i - 1), &tmp);
methValues[i] = tmp;
} else {
converter.toCpp(PySequence_Fast_GET_ITEM(sequence.object(), i - 1), methArgs[i]);
}
} else {
PyErr_Format(PyExc_TypeError, "Unknown type used to call meta function (that may be a signal): %s", argTypes[i].constData());
break;
}
}
bool ok = i == numArgs;
if (ok) {
Py_BEGIN_ALLOW_THREADS
QMetaObject::metacall(self, QMetaObject::InvokeMetaMethod, method.methodIndex(), methArgs);
Py_END_ALLOW_THREADS
if (retVal) {
if (methArgs[0]) {
static SbkConverter* qVariantTypeConverter = Shiboken::Conversions::getConverter("QVariant");
Q_ASSERT(qVariantTypeConverter);
*retVal = Shiboken::Conversions::copyToPython(qVariantTypeConverter, &methValues[0]);
SbkDbg() << (*retVal);
} else {
*retVal = Py_None;
Py_INCREF(*retVal);
}
}
}
delete[] methArgs;
delete[] methValues;
return ok;
}
} //namespace MetaFunction
} //namespace PySide
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