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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 "pysidemetafunction.h"
#include "pysidemetafunction_p.h"
#include <shiboken.h>
#include <signature.h>
#include <QtCore/QMetaMethod>
extern "C"
{
struct PySideMetaFunctionPrivate
{
QObject *qobject;
int methodIndex;
};
//methods
static void functionFree(void *);
static PyObject *functionCall(PyObject *, PyObject *, PyObject *);
static PyTypeObject *createMetaFunctionType()
{
PyType_Slot PySideMetaFunctionType_slots[] = {
{Py_tp_call, reinterpret_cast<void *>(functionCall)},
{Py_tp_new, reinterpret_cast<void *>(PyType_GenericNew)},
{Py_tp_free, reinterpret_cast<void *>(functionFree)},
{Py_tp_dealloc, reinterpret_cast<void *>(Sbk_object_dealloc)},
{0, nullptr}
};
PyType_Spec PySideMetaFunctionType_spec = {
"2:PySide6.QtCore.MetaFunction",
sizeof(PySideMetaFunction),
0,
Py_TPFLAGS_DEFAULT,
PySideMetaFunctionType_slots,
};
return SbkType_FromSpec(&PySideMetaFunctionType_spec);
}
PyTypeObject *PySideMetaFunction_TypeF(void)
{
static auto *type = createMetaFunctionType();
return type;
}
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 nullptr;
return retVal;
}
} // extern "C"
namespace PySide::MetaFunction {
static const char *MetaFunction_SignatureStrings[] = {
"PySide6.QtCore.MetaFunction.__call__(self,*args:typing.Any)->typing.Any",
nullptr}; // Sentinel
void init(PyObject *module)
{
if (InitSignatureStrings(PySideMetaFunction_TypeF(), MetaFunction_SignatureStrings) < 0)
return;
Py_INCREF(PySideMetaFunction_TypeF());
PyModule_AddObject(module, "MetaFunction", reinterpret_cast<PyObject *>(PySideMetaFunction_TypeF()));
}
PySideMetaFunction *newObject(QObject *source, int methodIndex)
{
if (methodIndex >= source->metaObject()->methodCount())
return nullptr;
QMetaMethod method = source->metaObject()->method(methodIndex);
if ((method.methodType() == QMetaMethod::Slot) ||
(method.methodType() == QMetaMethod::Method)) {
PySideMetaFunction *function = PyObject_New(PySideMetaFunction, PySideMetaFunction_TypeF());
function->d = new PySideMetaFunctionPrivate();
function->d->qobject = source;
function->d->methodIndex = methodIndex;
return function;
}
return nullptr;
}
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, nullptr));
qsizetype numArgs = PySequence_Fast_GET_SIZE(sequence.object()) + 1;
if (numArgs - 1 > argTypes.size()) {
PyErr_Format(PyExc_TypeError, "%s only accepts %d argument(s), %d given!",
method.methodSignature().constData(),
argTypes.size(), numArgs - 1);
return false;
}
if (numArgs - 1 < argTypes.size()) {
PyErr_Format(PyExc_TypeError, "%s needs %d argument(s), %d given!",
method.methodSignature().constData(),
argTypes.size(), numArgs - 1);
return false;
}
QVariant *methValues = new QVariant[numArgs];
void **methArgs = new void *[numArgs];
// Prepare room for return type
const char *returnType = method.typeName();
if (returnType && std::strcmp("void", returnType))
argTypes.prepend(returnType);
else
argTypes.prepend(QByteArray());
int i = 0;
for (; i < numArgs; ++i) {
const QByteArray &typeName = argTypes.at(i);
// This must happen only when the method hasn't return type.
if (typeName.isEmpty()) {
methArgs[i] = nullptr;
continue;
}
Shiboken::Conversions::SpecificConverter converter(typeName);
if (converter) {
QMetaType metaType = QMetaType::fromName(typeName);
if (!Shiboken::Conversions::pythonTypeIsObjectType(converter)) {
if (!metaType.isValid()) {
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(metaType);
}
methArgs[i] = methValues[i].data();
if (i == 0) // Don't do this for return type
continue;
if (metaType.id() == QMetaType::QString) {
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]);
} else {
*retVal = Py_None;
Py_INCREF(*retVal);
}
}
}
delete[] methArgs;
delete[] methValues;
return ok;
}
} //namespace PySide::MetaFunction
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