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/***************************************************************************
* pythonextension.cpp
* This file is part of the KDE project
* copyright (C)2004-2005 by Sebastian Sauer (mail@dipe.org)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
* This program 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
* Library General Public License for more details.
* You should have received a copy of the GNU Library General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
***************************************************************************/
#include "pythonextension.h"
#include "pythoninterpreter.h"
#include "pythonvariant.h"
#include "pythonfunction.h"
#include <QtWidgets/QWidget>
#include <QtCore/QMetaMethod>
#include <QtCore/QVarLengthArray>
namespace Kross {
/// \internal d-pointer class.
class PythonExtension::Private
{
public:
/// The QObject this PythonExtension wraps.
QPointer<QObject> object;
/// Defines if this PythonExtension the owner of the QObject.
bool owner;
#ifdef KROSS_PYTHON_EXTENSION_CTORDTOR_DEBUG
/// \internal string for debugging.
QString debuginfo;
#endif
/// The cached list of methods.
QHash<QByteArray, Py::Int> methods;
/// The cached list of properties.
QHash<QByteArray, QMetaProperty> properties;
/// The cached list of enumerations.
QHash<QByteArray, int> enumerations;
/// The \a PythonFunction instances.
QHash<QByteArray, PythonFunction*> functions;
/// The cached list of methodnames.
Py::List methodnames;
/// The cached list of membernames.
Py::List membernames;
/// The proxymethod which will handle all calls to our \a PythonExtension instance.
Py::MethodDefExt<PythonExtension>* proxymethod;
};
}
using namespace Kross;
void PythonExtension::init_type()
{
behaviors().name("KrossPythonExtension");
behaviors().doc("The KrossPythonExtension object wraps a QObject into the world of python.");
//behaviors().supportPrint();
behaviors().supportGetattr();
behaviors().supportSetattr();
//behaviors().supportGetattro();
//behaviors().supportSetattro();
behaviors().supportCompare();
//behaviors().supportRepr();
//behaviors().supportStr();
behaviors().supportHash();
//behaviors().supportIter();
//behaviors().supportCall();
behaviors().supportSequenceType();
behaviors().supportMappingType();
behaviors().supportNumberType();
//behaviors().supportBufferType();
add_varargs_method("className", &PythonExtension::getClassName, "Return the name of the QObject class.");
//add_varargs_method("classInfo", &PythonExtension::getClassInfo, "Return a list of key,value-tuples of class information.");
add_varargs_method("signalNames", &PythonExtension::getSignalNames, "Return list of signal names the QObject provides.");
add_varargs_method("slotNames", &PythonExtension::getSlotNames, "Return list of slot names the QObject provides.");
add_varargs_method("propertyNames", &PythonExtension::getPropertyNames, "Return list of property names the QObject provides.");
//add_varargs_method("dynamicPropertyNames", &PythonExtension::getDynamicPropertyNames, "");
add_varargs_method("property", &PythonExtension::getProperty, "Return a property value.");
add_varargs_method("setProperty", &PythonExtension::setProperty, "Set a property value.");
add_varargs_method("__toPointer__", &PythonExtension::toPointer, "Return the void* pointer of the QObject.");
//add_varargs_method("__fromPointer__", &PythonExtension::fromPointer, "Set the QObject* to the passed void* pointer.");
add_varargs_method("connect", &PythonExtension::doConnect, "Connect signal, slots or python functions together.");
add_varargs_method("disconnect", &PythonExtension::doDisconnect, "Disconnect signal, slots or python functions that are connected together.");
}
PythonExtension::PythonExtension(QObject* object, bool owner)
: Py::PythonExtension<PythonExtension>()
, d( new Private() )
{
d->object = object;
d->owner = owner;
#ifdef KROSS_PYTHON_EXTENSION_CTORDTOR_DEBUG
d->debuginfo = object ? QString("%1 (%2)").arg(object->objectName()).arg(object->metaObject()->className()) : "NULL";
krossdebug( QString("PythonExtension::Constructor object=%1").arg(d->debuginfo) );
#endif
d->proxymethod = new Py::MethodDefExt<PythonExtension>(
"", // methodname, not needed cause we use the method only internaly.
Py::MethodDefExt<PythonExtension>::method_varargs_function_t( 0 ), // method that should handle the callback, not needed cause proxyhandler will handle it.
Py::method_varargs_call_handler_t( proxyhandler ), // callback handler
"" // documentation
);
if(d->object) {
const QMetaObject* metaobject = d->object->metaObject();
{ // initialize methods.
const int count = metaobject->methodCount();
for(int i = 0; i < count; ++i) {
QMetaMethod member = metaobject->method(i);
const QByteArray name = member.name();
if(! d->methods.contains(name)) {
d->methods.insert(name, Py::Int(i));
d->methodnames.append(Py::String(name));
}
}
}
{ // initialize properties
const int count = metaobject->propertyCount();
for(int i = 0; i < count; ++i) {
QMetaProperty prop = metaobject->property(i);
d->properties.insert(prop.name(), prop);
d->membernames.append( Py::String(prop.name()) );
}
}
{ // initialize enumerations
const int count = metaobject->enumeratorCount();
for(int i = 0; i < count; ++i) {
QMetaEnum e = metaobject->enumerator(i);
const int kc = e.keyCount();
for(int k = 0; k < kc; ++k) {
const QByteArray name = /*e.name() +*/ e.key(k);
d->enumerations.insert(name, e.value(k));
d->membernames.append( Py::String(name) );
}
}
}
}
}
PythonExtension::~PythonExtension()
{
#ifdef KROSS_PYTHON_EXTENSION_CTORDTOR_DEBUG
krossdebug( QString("PythonExtension::Destructor object=%1").arg(d->debuginfo) );
#endif
if( d->owner )
delete d->object;
qDeleteAll(d->functions);//FIXME curently it may delete connections (i.e. PythonFunctions) that we want to stay!
delete d->proxymethod;
delete d;
}
QObject* PythonExtension::object() const
{
return d->object;
}
Py::Object PythonExtension::getattr(const char* n)
{
#ifdef KROSS_PYTHON_EXTENSION_GETATTR_DEBUG
krossdebug( QString("PythonExtension::getattr name='%1'").arg(n) );
#endif
// handle internal methods
if(n[0] == '_') {
if(strcmp(n,"__methods__") == 0)
return d->methodnames;
if(strcmp(n,"__members__") == 0)
return d->membernames;
//if(strcmp(n,"__dict__") == 0)
// return PythonType<QStringList>::toPyObject( QStringList() );
if(strcmp(n,"__all__") == 0) //this hack is needed to prevent "from-import-* object has no __dict__ and no __all__" exceptions
return d->methodnames;
}
// look if the attribute is a method
if(d->methods.contains(n)) {
#ifdef KROSS_PYTHON_EXTENSION_GETATTR_DEBUG
krossdebug( QString("PythonExtension::getattr name='%1' is a method.").arg(n) );
#endif
// Python is more dynamic then someone thinks of what provides us bigger problems
// here since we are not able to cache the whole lookup and need to create and return
// a new function object at each request since 1) they may used internaly by python
// to redirect this method/attr to somebody else and 2) those returned function object
// may prevent this object instance from beeing removed by the garbage collector.
//FIXME use callcache here to improve the performance by some factors!
Py::Tuple t(3);
t[0] = Py::Object(this); // reference to this instance, set at getattr()
t[1] = d->methods[n]; // the first index used for faster access
t[2] = Py::String(n); // the name of the method
t.increment_reference_count(); // the PyCFunction_New shoukd take care of removing our ref...
return Py::Object(PyCFunction_New( &d->proxymethod->ext_meth_def, t.ptr() ), true);
}
// look if the attribute is a property
if(d->properties.contains(n) && d->object) {
QMetaProperty property = d->properties[n];
#ifdef KROSS_PYTHON_EXTENSION_GETATTR_DEBUG
krossdebug( QString("PythonExtension::getattr name='%1' is a property: type=%2 valid=%3 readable=%4 scriptable=%5 writable=%6 user=%7 usertype=%8")
.arg(n).arg(property.typeName()).arg(property.isValid())
.arg(property.isReadable()).arg(property.isScriptable(d->object)).arg(property.isWritable())
.arg(property.isUser(d->object)).arg(property.userType())
);
#endif
if(! property.isReadable()) {
Py::AttributeError( ::QString("Attribute \"%1\" is not readable.").arg(n).toLatin1().constData() );
return Py::None();
}
return PythonType<QVariant>::toPyObject( property.read(d->object) );
}
// look if the attribute is an enumerator
if(d->enumerations.contains(n)) {
return Py::Int(d->enumerations[n]);
}
// look if it's a dynamic property
if(d->object && d->object->dynamicPropertyNames().contains(n)) {
return PythonType<QVariant>::toPyObject( d->object->property(n) );
}
// finally redirect the unhandled attribute-request...
//return Py::PythonExtension<PythonExtension>::getattr_methods(n);
return Py::PythonExtension<PythonExtension>::getattr(n);
}
int PythonExtension::setattr(const char* n, const Py::Object& value)
{
// look if the attribute is a property
if(d->properties.contains(n) && d->object) {
QMetaProperty property = d->properties[n];
#ifdef KROSS_PYTHON_EXTENSION_SETATTR_DEBUG
krossdebug( QString("PythonExtension::setattr name='%1' is a property: type=%2 valid=%3 readable=%4 scriptable=%5 writable=%6 usertype=%7")
.arg(n).arg(property.typeName()).arg(property.isValid())
.arg(property.isReadable()).arg(property.isScriptable(d->object)).arg(property.isWritable())
.arg(property.isUser(d->object)).arg(property.userType())
);
#endif
if(! property.isWritable()) {
Py::AttributeError( ::QString("Attribute \"%1\" is not writable.").arg(n).toLatin1().constData() );
return -1; // indicate error
}
QVariant v = PythonType<QVariant>::toVariant(value);
if(! property.write(d->object, v)) {
Py::AttributeError( ::QString("Setting attribute \"%1\" failed.").arg(n).toLatin1().constData() );
return -1; // indicate error
}
#ifdef KROSS_PYTHON_EXTENSION_SETATTR_DEBUG
krossdebug( QString("PythonExtension::setattr name='%1' value='%2'").arg(n).arg(v.toString()) );
#endif
return 0; // indicate success
}
// finally redirect the unhandled attribute-request...
return Py::PythonExtension<PythonExtension>::setattr(n, value);
}
int PythonExtension::compare(const Py::Object& other)
{
if(Py::PythonExtension<PythonExtension>::check( other )) {
Py::ExtensionObject<PythonExtension> extobj( other );
PythonExtension* extension = extobj.extensionObject();
QObject* obj = extension->object();
//krossdebug( QString("PythonExtension::compare this.name='%1' other.name='%2' other.pyobject='%3'").arg(d->object ? d->object->objectName() : "NULL").arg(obj ? obj->objectName() : "NULL").arg(other.as_string().c_str()) );
//Q_ASSERT( obj );
//Q_ASSERT( object() );
return obj == object() ? 0 : ( obj > object() ? -1 : 1 );
}
PyErr_SetObject(PyExc_TypeError, other.ptr());
return -1;
}
long PythonExtension::hash()
{
return long( (QObject*) d->object );
}
/* objectName is a property anyway and therefore already accessible
Py::Object PythonExtension::getObjectName(const Py::Tuple&)
{
return PythonType<QString>::toPyObject( d->object->objectName() );
}
*/
Py::Object PythonExtension::getClassName(const Py::Tuple&)
{
return PythonType<QString>::toPyObject( d->object->metaObject()->className() );
}
Py::Object PythonExtension::getSignalNames(const Py::Tuple&)
{
Py::List list;
const QMetaObject* metaobject = d->object->metaObject();
const int count = metaobject->methodCount();
for(int i = 0; i < count; ++i) {
QMetaMethod m = metaobject->method(i);
QByteArray signature = m.methodSignature();
if( m.methodType() == QMetaMethod::Signal)
list.append( Py::String(signature.constData()) );
}
return list;
}
Py::Object PythonExtension::getSlotNames(const Py::Tuple&)
{
Py::List list;
const QMetaObject* metaobject = d->object->metaObject();
const int count = metaobject->methodCount();
for(int i = 0; i < count; ++i) {
QMetaMethod m = metaobject->method(i);
QByteArray signature = m.methodSignature();
if( m.methodType() == QMetaMethod::Slot)
list.append( Py::String(signature.constData()) );
}
return list;
}
Py::Object PythonExtension::getPropertyNames(const Py::Tuple&)
{
Py::List list;
const QMetaObject* metaobject = d->object->metaObject();
const int count = metaobject->propertyCount();
for(int i = 0; i < count; ++i)
list.append( Py::String(metaobject->property(i).name()) );
return list;
}
Py::Object PythonExtension::getProperty(const Py::Tuple& args)
{
if( args.size() != 1 ) {
Py::TypeError("Expected the propertyname as argument.");
return Py::None();
}
return PythonType<QVariant>::toPyObject( d->object->property(
PythonType<QByteArray>::toVariant(args[0]).constData()
) );
}
Py::Object PythonExtension::setProperty(const Py::Tuple& args)
{
if( args.size() != 2 ) {
Py::TypeError("Expected the propertyname and the value as arguments.");
return Py::None();
}
return PythonType<bool>::toPyObject( d->object->setProperty(
PythonType<QByteArray>::toVariant(args[0]).constData(),
PythonType<QVariant>::toVariant(args[1])
) );
}
Py::Object PythonExtension::toPointer(const Py::Tuple&)
{
QObject* obj = d->object;
PyObject* qobjectptr = PyLong_FromVoidPtr( (void*) obj );
//PyObject* o = Py_BuildValue ("N", mw);
return Py::asObject( qobjectptr );
//PythonPyQtExtension* pyqtextension = new PythonPyQtExtension(self, args);
//return pyqtextension;
}
/*
Py::Object PythonExtension::fromPointer(fromPointer(const Py::Tuple&)
{
QObject* object = dynamic_cast< QObject* >(PyLong_AsVoidPtr( args[0] ));
}
*/
Py::Object PythonExtension::doConnect(const Py::Tuple& args)
{
#ifdef KROSS_PYTHON_EXTENSION_CONNECT_DEBUG
krossdebug( QString("PythonExtension::doConnect" ) );
for(uint i = 0; i < args.size(); ++i)
try {
QVariant v = PythonType<QVariant>::toVariant( args[i] );
krossdebug( QString(" Argument index=%1 variant.toString=%2 variant.typeName=%3").arg(i).arg(v.toString()).arg(v.typeName()) );
}
catch(Py::Exception& e) { // may happen e.g. on "function" types
PyTypeObject *type = (PyTypeObject*) args[i].type().ptr();
krossdebug( QString(" Argument index=%1 tp_name=%2").arg(i).arg(type->tp_name) );
e.clear();
}
#endif
if( args.size() < 2 ) {
Py::TypeError("Expected at least 2 arguments.");
return PythonType<bool>::toPyObject(false);
}
uint idx; // next argument to check
QObject* sender; // the sender object
QByteArray sendersignal; // the sender signal
if( args[0].isString() ) { // connect(signal, ...)
//krossdebug( QString("PythonExtension::doConnect connect(signal, ...)" ) );
sender = d->object;
sendersignal = PythonType<QByteArray>::toVariant( args[0] );
idx = 1;
}
else { // connect(sender, signal, ...)
//krossdebug( QString("PythonExtension::doConnect connect(sender, signal, ...)" ) );
Py::ExtensionObject<PythonExtension> extobj(args[0]);
PythonExtension* extension = extobj.extensionObject();
if(! extension) {
Py::TypeError( ::QString("First argument needs to be a signalname or a sender-object.").toLatin1().constData() );
return PythonType<bool>::toPyObject(false);
}
sender = extension->object();
if( ! args[1].isString() ) {
Py::TypeError( ::QString("Second argument needs to be a signalname.").toLatin1().constData() );
return PythonType<bool>::toPyObject(false);
}
sendersignal = PythonType<QByteArray>::toVariant( args[1] );
idx = 2;
if( args.size() <= idx ) {
Py::TypeError( ::QString("Expected at least %1 arguments.").arg(idx+1).toLatin1().constData() );
return PythonType<bool>::toPyObject(false);
}
}
QObject* receiver; // the receiver object
QByteArray receiverslot; // the receiver slot
if( args[idx].isCallable() ) { // connect with python function
//krossdebug( QString("PythonExtension::doConnect connect with python function" ) );
Py::Callable func(args[idx]); // the callable python function
PythonFunction* function = new PythonFunction(sender, sendersignal, func);
d->functions.insertMulti(sendersignal, function);
receiver = function;
receiverslot = sendersignal;
}
else { // connect with receiver and slot
//krossdebug( QString("PythonExtension::doConnect connect with receiver and slot" ) );
if( args[idx].isString() ) { // connect(..., slot)
receiver = d->object;
receiverslot = PythonType<QByteArray>::toVariant( args[idx] );
}
else { // connect(..., receiver, slot)
Py::ExtensionObject<PythonExtension> extobj(args[idx]);
PythonExtension* extension = extobj.extensionObject();
if(! extension) {
Py::TypeError( ::QString("Receiver argument needs to be a slotname or a receiver-object.").toLatin1().constData() );
return PythonType<bool>::toPyObject(false);
}
receiver = extension->object();
idx++;
if( args.size() < idx ) {
Py::TypeError( ::QString("Expected at least %1 arguments.").arg(idx+1).toLatin1().constData() );
return PythonType<bool>::toPyObject(false);
}
if( ! args[idx].isString() ) {
Py::TypeError( ::QString("Expected receiver slotname as argument %1.").arg(idx+1).toLatin1().constData() );
return PythonType<bool>::toPyObject(false);
}
receiverslot = PythonType<QByteArray>::toVariant( args[idx] );
}
}
// Dirty hack to replace SIGNAL() and SLOT() macros. If the user doesn't
// defined them explicit, we assume it's wanted to connect from a signal to
// a slot. This seems to be the most flexible solution so far...
if( ! sendersignal.startsWith('1') && ! sendersignal.startsWith('2') )
sendersignal.prepend('2'); // prepending 2 means SIGNAL(...)
if( ! receiverslot.startsWith('1') && ! receiverslot.startsWith('2') )
receiverslot.prepend('1'); // prepending 1 means SLOT(...)
#ifdef KROSS_PYTHON_EXTENSION_CONNECT_DEBUG
krossdebug( QString("PythonExtension::doConnect sender=%1 signal=%2 receiver=%3 slot=%4").arg(sender->objectName()).arg(sendersignal.constData()).arg(receiver->objectName()).arg(receiverslot.constData()).toLatin1().constData() );
#endif
if(! QObject::connect(sender, sendersignal, receiver, receiverslot) ) {
krosswarning( QString("PythonExtension::doConnect Failed to connect").toLatin1().constData() );
return PythonType<bool>::toPyObject(false);
}
return PythonType<bool>::toPyObject(true);
}
Py::Object PythonExtension::doDisconnect(const Py::Tuple&)
{
//TODO
return PythonType<bool>::toPyObject(false);
}
PyObject* PythonExtension::proxyhandler(PyObject *_self_and_name_tuple, PyObject *args)
{
/*
class GilState {
public:
GilState() { m_gilstate = PyGILState_Ensure(); } // Acquire interpreter lock
~GilState() { PyGILState_Release( m_gilstate ); } // Free interpreter lock
private:
PyGILState_STATE m_gilstate;
};
GilState gil;
*/
try {
Py::Tuple selftuple(_self_and_name_tuple);
int methodindex = Py::Int(selftuple[1]);
QByteArray ba = Py::String(selftuple[2]).as_string().c_str();
const char* methodname = ba.constData();
#ifdef KROSS_PYTHON_EXTENSION_CALL_DEBUG
krossdebug( QString("PythonExtension::proxyhandler methodname=%1 methodindex=%2").arg(methodname).arg(methodindex) );
#endif
PythonExtension *self = static_cast<PythonExtension*>( selftuple[0].ptr() );
if( ! self->d->object ) {
Py::RuntimeError( QString("Underlying QObject instance of method '%1' was removed.").arg(methodname).toLatin1().constData() );
return Py_None;
}
Py::Tuple argstuple(args);
const int argssize = int( argstuple.size() );
QMetaMethod metamethod = self->d->object->metaObject()->method( methodindex );
if(metamethod.parameterTypes().size() != argssize) {
bool found = false;
const int count = self->d->object->metaObject()->methodCount();
for(++methodindex; methodindex < count; ++methodindex) {
metamethod = self->d->object->metaObject()->method( methodindex );
const QByteArray name = metamethod.name();
if(name == methodname) {
if(metamethod.parameterTypes().size() == argssize) {
found = true;
break;
}
}
}
if(! found) {
krosswarning( QString("PythonExtension::proxyhandler The method '%1' does not expect %2 arguments.").arg(methodname).arg(argssize) );
throw Py::TypeError( QString("Invalid number of arguments for the method %1").arg(methodname).toLatin1().constData() );
}
}
#ifdef KROSS_PYTHON_EXTENSION_CALL_DEBUG
krossdebug( QString("PythonExtension::proxyhandler QMetaMethod idx=%1 sig=%2 tag=%3 type=%4").arg(methodindex).arg(metamethod.signature()).arg(metamethod.tag()).arg(metamethod.typeName()) );
for(int i = 0; i < argssize; ++i) {
QVariant v;
try {
v = PythonType<QVariant>::toVariant( argstuple[i] );
}
catch(Py::Exception& e) {
v = Py::value(e).as_string().c_str();
e.clear();
}
krossdebug( QString(" Argument index=%1 variant.toString=%2 variant.typeName=%3").arg(i).arg(v.toString()).arg(v.typeName()) );
}
#endif
Py::Object pyresult;
{
QList<QByteArray> typelist = metamethod.parameterTypes();
const int typelistcount = typelist.count();
bool hasreturnvalue = strcmp(metamethod.typeName(),"") != 0;
// exact 1 returnvalue + 0..9 arguments
Q_ASSERT(typelistcount <= 9);
QVarLengthArray<MetaType*, 10> variantargs(typelistcount + 1);
QVarLengthArray<void*, 10> voidstarargs(typelistcount + 1);
// set the return value
if(hasreturnvalue) {
MetaType* returntype = PythonMetaTypeFactory::create( metamethod.typeName(), Py::Object(), false /*owner*/ );
variantargs[0] = returntype;
voidstarargs[0] = returntype->toVoidStar();
#ifdef KROSS_PYTHON_EXTENSION_CALL_DEBUG
krossdebug( QString("PythonExtension::proxyhandler typeName=%1").arg(metamethod.typeName()) );
#endif
}
else {
variantargs[0] = 0;
voidstarargs[0] = (void*)0;
}
// set the arguments
int idx = 1;
try {
for(; idx <= typelistcount; ++idx) {
variantargs[idx] = PythonMetaTypeFactory::create( typelist[idx-1].constData(), argstuple[idx - 1], false /*owner*/ );
voidstarargs[idx] = variantargs[idx]->toVoidStar();
}
}
catch(Py::Exception& e) {
// Seems PythonMetaTypeFactory::create raised an exception
// up. Clean all already allocated MetaType instances.
for(int i = 0; i < idx; ++i)
delete variantargs[i];
throw e; // re-throw exception
}
// call the method now
int r = self->d->object->qt_metacall(QMetaObject::InvokeMetaMethod, methodindex, &voidstarargs[0]);
#ifdef KROSS_PYTHON_EXTENSION_CALL_DEBUG
krossdebug( QString("RESULT nr=%1").arg(r) );
#else
Q_UNUSED(r);
#endif
// eval the return-value
if(hasreturnvalue) {
QVariant v;
if( Kross::MetaTypeHandler* handler = Kross::Manager::self().metaTypeHandler(metamethod.typeName()) ) {
#ifdef KROSS_PYTHON_EXTENSION_CALL_DEBUG
krossdebug( QString("Returnvalue of type '%2' has a handler").arg(metamethod.typeName()) );
#endif
void *ptr = (*reinterpret_cast<void*(*)>( variantargs[0]->toVoidStar() ));
v = handler->callHandler(ptr);
}
else {
v = QVariant(variantargs[0]->typeId(), variantargs[0]->toVoidStar());
if( ! Kross::Manager::self().strictTypesEnabled() ) {
if( v.type() == QVariant::Invalid && QByteArray(metamethod.typeName()).endsWith("*") ) {
#ifdef KROSS_PYTHON_EXTENSION_CALL_DEBUG
krossdebug( QString("Returnvalue of type '%2' will be reinterpret_cast<QObject*>").arg(metamethod.typeName()) );
#endif
QObject* obj = (*reinterpret_cast<QObject*(*)>( variantargs[0]->toVoidStar() ));
v.setValue( (QObject*) obj );
}
}
}
pyresult = PythonType<QVariant>::toPyObject(v);
#ifdef KROSS_PYTHON_EXTENSION_CALL_DEBUG
krossdebug( QString("Returnvalue typeId=%1 metamethod.typename=%2 variant.toString=%3 variant.typeName=%4 pyobject=%5").arg(variantargs[0]->typeId()).arg(metamethod.typeName()).arg(v.toString()).arg(v.typeName()).arg(pyresult.as_string().c_str()) );
#endif
}
// finally free the PythonVariable instances
for(int i = 0; i <= typelistcount; ++i)
delete variantargs[i];
}
pyresult.increment_reference_count(); // don't destroy PyObject* if pyresult got destroyed.
return pyresult.ptr();
}
catch(Py::Exception& e) {
QStringList trace;
int lineno;
PythonInterpreter::extractException(trace, lineno);
krosswarning( QString("PythonExtension::proxyhandler Had exception on line %1:\n%2 \n%3").arg(lineno).arg(Py::value(e).as_string().c_str()).arg(trace.join("\n")) );
PyErr_Print(); //e.clear();
}
return Py_None;
}
PyCxx_ssize_t PythonExtension::sequence_length()
{
return d->object->children().count();
}
Py::Object PythonExtension::sequence_concat(const Py::Object& obj)
{
throw Py::RuntimeError( QString("Unsupported: PythonExtension::sequence_concat %1").arg(obj.as_string().c_str()).toLatin1().constData() );
}
Py::Object PythonExtension::sequence_repeat(Py_ssize_t index)
{
// what we do here is rather evil and does not make sense at all. We assume that something
// like "myobjinstance * 2" means, that the pointer-address should be multiplied by 2. This
// is the case to keep backward-compatibility with SuperKaramba. In normal cases you wan't
// use such kind of logic within your python scripts anyway + we can't guarantee that the
// resulting number may not overflow or something like this.
return Py::Long( long( (QObject*) d->object ) * index );
}
Py::Object PythonExtension::sequence_item(Py_ssize_t index)
{
if(index < d->object->children().count())
return Py::asObject(new PythonExtension( d->object->children().at(index) ));
return Py::asObject( Py::new_reference_to( NULL ) );
}
Py::Object PythonExtension::sequence_slice(Py_ssize_t from, Py_ssize_t to)
{
Py::List list;
if(from >= 0) {
const int count = d->object->children().count();
for(int i = from; i <= to && i < count; ++i)
list.append( Py::asObject(new PythonExtension( d->object->children().at(i) )) );
}
return list;
}
int PythonExtension::sequence_ass_item(Py_ssize_t index, const Py::Object& obj)
{
throw Py::RuntimeError( QString("Unsupported: PythonExtension::sequence_ass_item %1 %2").arg(index).arg(obj.as_string().c_str()).toLatin1().constData() );
}
int PythonExtension::sequence_ass_slice(Py_ssize_t from, Py_ssize_t to, const Py::Object& obj)
{
throw Py::RuntimeError( QString("Unsupported: PythonExtension::sequence_ass_slice %1 %2 %3").arg(from).arg(to).arg(obj.as_string().c_str()).toLatin1().constData() );
}
PyCxx_ssize_t PythonExtension::mapping_length()
{
return d->object->children().count();
}
Py::Object PythonExtension::mapping_subscript(const Py::Object& obj)
{
QString name = Py::String(obj).as_string().c_str();
QObject* object = d->object->findChild< QObject* >( name );
if(! object) {
foreach(QObject* o, d->object->children()) {
if(name == o->metaObject()->className()) {
object = o;
break;
}
}
}
if(object)
return Py::asObject(new PythonExtension(object));
return Py::asObject( Py::new_reference_to( NULL ) );
}
int PythonExtension::mapping_ass_subscript(const Py::Object& obj1, const Py::Object& obj2)
{
throw Py::RuntimeError( QString("Unsupported: PythonExtension::mapping_ass_subscript %1 %2").arg(obj1.as_string().c_str()).arg(obj2.as_string().c_str()).toLatin1().constData() );
}
int PythonExtension::number_nonzero()
{
#ifdef KROSS_PYTHON_EXTENSION_NUMERIC_DEBUG
krossdebug("PythonExtension::number_nonzero");
#endif
return d->object ? 1 : 0;
}
Py::Object PythonExtension::number_int()
{
#ifdef KROSS_PYTHON_EXTENSION_NUMERIC_DEBUG
krossdebug("PythonExtension::number_int");
#endif
return Py::Int( hash() );
}
Py::Object PythonExtension::number_long()
{
#ifdef KROSS_PYTHON_EXTENSION_NUMERIC_DEBUG
krossdebug("PythonExtension::number_long");
#endif
return Py::Long( hash() );
}
Py::Object PythonExtension::number_hex()
{
#ifdef KROSS_PYTHON_EXTENSION_NUMERIC_DEBUG
krossdebug("PythonExtension::number_hex");
#endif
void* ptr = (QObject*) d->object;
return Py::Object(PyString_FromFormat("%p",ptr),true);
}
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