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basewrapper.cpp
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/*
* This file is part of the Shiboken Python Bindings Generator project.
*
* Copyright (C) 2009-2010 Nokia Corporation and/or its subsidiary(-ies).
*
* Contact: PySide team <[email protected]>
*
* 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 "basewrapper.h"
#include "basewrapper_p.h"
#include "sbkconverter.h"
#include "sbkenum.h"
#include "autodecref.h"
#include "typeresolver.h"
#include "gilstate.h"
#include <string>
#include <cstring>
#include <cstddef>
#include <set>
#include <sstream>
#include <algorithm>
#include "threadstatesaver.h"
namespace {
void _destroyParentInfo(SbkObject* obj, bool keepReference);
}
extern "C"
{
static void SbkObjectTypeDealloc(PyObject* pyObj);
static PyObject* SbkObjectTypeTpNew(PyTypeObject* metatype, PyObject* args, PyObject* kwds);
PyTypeObject SbkObjectType_Type = {
PyVarObject_HEAD_INIT(0, 0)
/*tp_name*/ "Shiboken.ObjectType",
/*tp_basicsize*/ sizeof(SbkObjectType),
/*tp_itemsize*/ 0,
/*tp_dealloc*/ SbkObjectTypeDealloc,
/*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*/ 0,
/*tp_str*/ 0,
/*tp_getattro*/ 0,
/*tp_setattro*/ PyObject_GenericSetAttr,
/*tp_as_buffer*/ 0,
/*tp_flags*/ Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
/*tp_doc*/ 0,
/*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*/ &PyType_Type,
/*tp_dict*/ 0,
/*tp_descr_get*/ 0,
/*tp_descr_set*/ 0,
/*tp_dictoffset*/ 0,
/*tp_init*/ 0,
/*tp_alloc*/ PyType_GenericAlloc,
/*tp_new*/ SbkObjectTypeTpNew,
/*tp_free*/ PyObject_GC_Del,
/*tp_is_gc*/ 0,
/*tp_bases*/ 0,
/*tp_mro*/ 0,
/*tp_cache*/ 0,
/*tp_subclasses*/ 0,
/*tp_weaklist*/ 0
};
static PyObject* SbkObjectGetDict(SbkObject* obj)
{
if (!obj->ob_dict)
obj->ob_dict = PyDict_New();
if (!obj->ob_dict)
return 0;
Py_INCREF(obj->ob_dict);
return obj->ob_dict;
}
static PyGetSetDef SbkObjectGetSetList[] = {
{const_cast<char*>("__dict__"), (getter)SbkObjectGetDict, 0},
{0} // Sentinel
};
static int SbkObject_traverse(PyObject* self, visitproc visit, void* arg)
{
SbkObject* sbkSelf = reinterpret_cast<SbkObject*>(self);
//Visit children
Shiboken::ParentInfo* pInfo = sbkSelf->d->parentInfo;
if (pInfo) {
std::set<SbkObject*>::const_iterator it = pInfo->children.begin();
for(; it != pInfo->children.end(); ++it)
Py_VISIT(*it);
}
//Visit refs
Shiboken::RefCountMap* rInfo = sbkSelf->d->referredObjects;
if (rInfo) {
Shiboken::RefCountMap::const_iterator it = rInfo->begin();
for (; it != rInfo->end(); ++it) {
std::list<PyObject*>::const_iterator ref = it->second.begin();
for(; ref != it->second.end(); ++ref)
Py_VISIT(*ref);
}
}
if (sbkSelf->ob_dict)
Py_VISIT(sbkSelf->ob_dict);
return 0;
}
static int SbkObject_clear(PyObject* self)
{
SbkObject* sbkSelf = reinterpret_cast<SbkObject*>(self);
Shiboken::Object::removeParent(sbkSelf);
if (sbkSelf->d->parentInfo)
_destroyParentInfo(sbkSelf, true);
Shiboken::Object::clearReferences(sbkSelf);
if (sbkSelf->ob_dict)
Py_CLEAR(sbkSelf->ob_dict);
return 0;
}
SbkObjectType SbkObject_Type = { { {
PyVarObject_HEAD_INIT(&SbkObjectType_Type, 0)
/*tp_name*/ "Shiboken.Object",
/*tp_basicsize*/ sizeof(SbkObject),
/*tp_itemsize*/ 0,
/*tp_dealloc*/ SbkDeallocWrapperWithPrivateDtor,
/*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*/ 0,
/*tp_str*/ 0,
/*tp_getattro*/ 0,
/*tp_setattro*/ 0,
/*tp_as_buffer*/ 0,
/*tp_flags*/ Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC,
/*tp_doc*/ 0,
/*tp_traverse*/ SbkObject_traverse,
/*tp_clear*/ SbkObject_clear,
/*tp_richcompare*/ 0,
/*tp_weaklistoffset*/ offsetof(SbkObject, weakreflist),
/*tp_iter*/ 0,
/*tp_iternext*/ 0,
/*tp_methods*/ 0,
/*tp_members*/ 0,
/*tp_getset*/ SbkObjectGetSetList,
/*tp_base*/ 0,
/*tp_dict*/ 0,
/*tp_descr_get*/ 0,
/*tp_descr_set*/ 0,
/*tp_dictoffset*/ offsetof(SbkObject, ob_dict),
/*tp_init*/ 0,
/*tp_alloc*/ 0,
/*tp_new*/ 0,
/*tp_free*/ 0,
/*tp_is_gc*/ 0,
/*tp_bases*/ 0,
/*tp_mro*/ 0,
/*tp_cache*/ 0,
/*tp_subclasses*/ 0,
/*tp_weaklist*/ 0
}, },
/*priv_data*/ 0
};
void SbkDeallocWrapper(PyObject* pyObj)
{
SbkObject* sbkObj = reinterpret_cast<SbkObject*>(pyObj);
if (sbkObj->weakreflist)
PyObject_ClearWeakRefs(pyObj);
// If I have ownership and is valid delete C++ pointer
if (sbkObj->d->hasOwnership && sbkObj->d->validCppObject) {
SbkObjectType* sbkType = reinterpret_cast<SbkObjectType*>(pyObj->ob_type);
if (sbkType->d->is_multicpp) {
Shiboken::DeallocVisitor visitor(sbkObj);
Shiboken::walkThroughClassHierarchy(pyObj->ob_type, &visitor);
} else {
void* cptr = sbkObj->d->cptr[0];
Shiboken::Object::deallocData(sbkObj, true);
Shiboken::ThreadStateSaver threadSaver;
if (Py_IsInitialized())
threadSaver.save();
sbkType->d->cpp_dtor(cptr);
}
} else {
Shiboken::Object::deallocData(sbkObj, true);
}
}
void SbkDeallocWrapperWithPrivateDtor(PyObject* self)
{
SbkObject* sbkObj = reinterpret_cast<SbkObject*>(self);
if (sbkObj->weakreflist)
PyObject_ClearWeakRefs(self);
Shiboken::Object::deallocData(sbkObj, true);
}
void SbkObjectTypeDealloc(PyObject* pyObj)
{
SbkObjectType* sbkType = reinterpret_cast<SbkObjectType*>(pyObj);
PyObject_GC_UnTrack(pyObj);
Py_TRASHCAN_SAFE_BEGIN(pyObj);
if (sbkType->d) {
if(sbkType->d->user_data && sbkType->d->d_func) {
sbkType->d->d_func(sbkType->d->user_data);
sbkType->d->user_data = 0;
}
free(sbkType->d->original_name);
sbkType->d->original_name = 0;
if (!Shiboken::ObjectType::isUserType(reinterpret_cast<PyTypeObject*>(sbkType)))
Shiboken::Conversions::deleteConverter(sbkType->d->converter);
delete sbkType->d;
sbkType->d = 0;
}
Py_TRASHCAN_SAFE_END(pyObj);
}
PyObject* SbkObjectTypeTpNew(PyTypeObject* metatype, PyObject* args, PyObject* kwds)
{
#ifndef IS_PY3K
// Check if all bases are new style before calling type.tp_new
// Was causing gc assert errors in test_bug704.py when
// this check happened after creating the type object.
// Argument parsing take from type.tp_new code.
PyObject* name;
PyObject* pyBases;
PyObject* dict;
static const char* kwlist[] = { "name", "bases", "dict", 0};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "SO!O!:sbktype", (char**)kwlist,
&name,
&PyTuple_Type, &pyBases,
&PyDict_Type, &dict))
return NULL;
for(int i=0, i_max=PyTuple_GET_SIZE(pyBases); i < i_max; i++) {
PyObject* baseType = PyTuple_GET_ITEM(pyBases, i);
if (PyClass_Check(baseType)) {
PyErr_Format(PyExc_TypeError, "Invalid base class used in type %s. PySide only support multiple inheritance from python new style class.", metatype->tp_name);
return 0;
}
}
#endif
// The meta type creates a new type when the Python programmer extends a wrapped C++ class.
SbkObjectType* newType = reinterpret_cast<SbkObjectType*>(PyType_Type.tp_new(metatype, args, kwds));
if (!newType)
return 0;
Shiboken::ObjectType::initPrivateData(newType);
SbkObjectTypePrivate* d = newType->d;
std::list<SbkObjectType*> bases = Shiboken::getCppBaseClasses(reinterpret_cast<PyTypeObject*>(newType));
if (bases.size() == 1) {
SbkObjectTypePrivate* parentType = bases.front()->d;
d->mi_offsets = parentType->mi_offsets;
d->mi_init = parentType->mi_init;
d->mi_specialcast = parentType->mi_specialcast;
d->type_discovery = parentType->type_discovery;
d->cpp_dtor = parentType->cpp_dtor;
d->is_multicpp = 0;
d->converter = parentType->converter;
} else {
d->mi_offsets = 0;
d->mi_init = 0;
d->mi_specialcast = 0;
d->type_discovery = 0;
d->cpp_dtor = 0;
d->is_multicpp = 1;
d->converter = 0;
}
if (bases.size() == 1)
d->original_name = strdup(bases.front()->d->original_name);
else
d->original_name = strdup("object");
d->user_data = 0;
d->d_func = 0;
d->is_user_type = 1;
std::list<SbkObjectType*>::const_iterator it = bases.begin();
for (; it != bases.end(); ++it) {
if ((*it)->d->subtype_init)
(*it)->d->subtype_init(newType, args, kwds);
}
return reinterpret_cast<PyObject*>(newType);
}
PyObject* SbkObjectTpNew(PyTypeObject* subtype, PyObject*, PyObject*)
{
SbkObject* self = PyObject_GC_New(SbkObject, subtype);
Py_INCREF(reinterpret_cast<PyObject*>(subtype));
SbkObjectPrivate* d = new SbkObjectPrivate;
SbkObjectType* sbkType = reinterpret_cast<SbkObjectType*>(subtype);
int numBases = ((sbkType->d && sbkType->d->is_multicpp) ? Shiboken::getNumberOfCppBaseClasses(subtype) : 1);
d->cptr = new void*[numBases];
std::memset(d->cptr, 0, sizeof(void*)*numBases);
d->hasOwnership = 1;
d->containsCppWrapper = 0;
d->validCppObject = 0;
d->parentInfo = 0;
d->referredObjects = 0;
d->cppObjectCreated = 0;
self->ob_dict = 0;
self->weakreflist = 0;
self->d = d;
PyObject_GC_Track(reinterpret_cast<PyObject*>(self));
return reinterpret_cast<PyObject*>(self);
}
} //extern "C"
namespace
{
void _destroyParentInfo(SbkObject* obj, bool keepReference)
{
Shiboken::ParentInfo* pInfo = obj->d->parentInfo;
if (pInfo) {
while(!pInfo->children.empty()) {
SbkObject* first = *pInfo->children.begin();
// Mark child as invalid
Shiboken::Object::invalidate(first);
Shiboken::Object::removeParent(first, false, keepReference);
}
Shiboken::Object::removeParent(obj, false);
}
}
}
namespace Shiboken
{
static void decRefPyObjectList(const std::list<PyObject*> &pyObj, PyObject* skip = 0);
static void _walkThroughClassHierarchy(PyTypeObject* currentType, HierarchyVisitor* visitor)
{
PyObject* bases = currentType->tp_bases;
Py_ssize_t numBases = PyTuple_GET_SIZE(bases);
for (int i = 0; i < numBases; ++i) {
PyTypeObject* type = reinterpret_cast<PyTypeObject*>(PyTuple_GET_ITEM(bases, i));
if (!PyType_IsSubtype(type, reinterpret_cast<PyTypeObject*>(&SbkObject_Type))) {
continue;
} else {
SbkObjectType* sbkType = reinterpret_cast<SbkObjectType*>(type);
if (sbkType->d->is_user_type)
_walkThroughClassHierarchy(type, visitor);
else
visitor->visit(sbkType);
}
if (visitor->wasFinished())
break;
}
}
void walkThroughClassHierarchy(PyTypeObject* currentType, HierarchyVisitor* visitor)
{
_walkThroughClassHierarchy(currentType, visitor);
visitor->done();
}
bool importModule(const char* moduleName, PyTypeObject*** cppApiPtr)
{
PyObject* sysModules = PyImport_GetModuleDict();
PyObject* module = PyDict_GetItemString(sysModules, moduleName);
if (!module) {
module = PyImport_ImportModule(moduleName);
if (!module)
return false;
} else {
Py_INCREF(module);
}
Shiboken::AutoDecRef cppApi(PyObject_GetAttrString(module, "_Cpp_Api"));
Py_DECREF(module);
if (cppApi.isNull())
return false;
#ifdef IS_PY3K
if (PyCapsule_CheckExact(cppApi))
*cppApiPtr = reinterpret_cast<PyTypeObject**>(PyCapsule_GetPointer(cppApi, 0));
#else
// Python 2.6 doesn't have PyCapsule API, so let's keep usign PyCObject on all Python 2.x
if (PyCObject_Check(cppApi))
*cppApiPtr = reinterpret_cast<PyTypeObject**>(PyCObject_AsVoidPtr(cppApi));
#endif
return true;
}
// Wrapper metatype and base type ----------------------------------------------------------
void DtorCallerVisitor::visit(SbkObjectType* node)
{
m_ptrs.push_back(std::make_pair(m_pyObj->d->cptr[m_ptrs.size()], node));
}
void DtorCallerVisitor::done()
{
std::list<std::pair<void*, SbkObjectType*> >::const_iterator it = m_ptrs.begin();
for (; it != m_ptrs.end(); ++it) {
Shiboken::ThreadStateSaver threadSaver;
threadSaver.save();
it->second->d->cpp_dtor(it->first);
}
}
void DeallocVisitor::done()
{
Shiboken::Object::deallocData(m_pyObj, true);
DtorCallerVisitor::done();
}
namespace Module { void init(); }
namespace Conversions { void init(); }
void init()
{
static bool shibokenAlreadInitialised = false;
if (shibokenAlreadInitialised)
return;
Module::init();
Conversions::init();
initTypeResolver();
PyEval_InitThreads();
//Init private data
Shiboken::ObjectType::initPrivateData(&SbkObject_Type);
if (PyType_Ready(&SbkEnumType_Type) < 0)
Py_FatalError("[libshiboken] Failed to initialise Shiboken.SbkEnumType metatype.");
if (PyType_Ready(&SbkObjectType_Type) < 0)
Py_FatalError("[libshiboken] Failed to initialise Shiboken.BaseWrapperType metatype.");
if (PyType_Ready((PyTypeObject *)&SbkObject_Type) < 0)
Py_FatalError("[libshiboken] Failed to initialise Shiboken.BaseWrapper type.");
shibokenAlreadInitialised = true;
}
void setErrorAboutWrongArguments(PyObject* args, const char* funcName, const char** cppOverloads)
{
std::string msg;
std::string params;
if (args) {
if (PyTuple_Check(args)) {
for (int i = 0, max = PyTuple_GET_SIZE(args); i < max; ++i) {
if (i)
params += ", ";
PyObject* arg = PyTuple_GET_ITEM(args, i);
params += arg->ob_type->tp_name;
}
} else {
params = args->ob_type->tp_name;
}
}
if (!cppOverloads) {
msg = "'" + std::string(funcName) + "' called with wrong argument types: " + params;
} else {
msg = "'" + std::string(funcName) + "' called with wrong argument types:\n ";
msg += funcName;
msg += '(';
msg += params;
msg += ")\n";
msg += "Supported signatures:";
for (int i = 0; cppOverloads[i]; ++i) {
msg += "\n ";
msg += funcName;
msg += '(';
msg += cppOverloads[i];
msg += ')';
}
}
PyErr_SetString(PyExc_TypeError, msg.c_str());
}
class FindBaseTypeVisitor : public HierarchyVisitor
{
public:
FindBaseTypeVisitor(PyTypeObject* typeToFind) : m_found(false), m_typeToFind(typeToFind) {}
virtual void visit(SbkObjectType* node)
{
if (reinterpret_cast<PyTypeObject*>(node) == m_typeToFind) {
m_found = true;
finish();
}
}
bool found() const { return m_found; }
private:
bool m_found;
PyTypeObject* m_typeToFind;
};
std::list<SbkObject*> splitPyObject(PyObject* pyObj)
{
std::list<SbkObject*> result;
if (PySequence_Check(pyObj)) {
AutoDecRef lst(PySequence_Fast(pyObj, "Invalid keep reference object."));
if (!lst.isNull()) {
for(int i = 0, i_max = PySequence_Fast_GET_SIZE(lst.object()); i < i_max; i++) {
PyObject* item = PySequence_Fast_GET_ITEM(lst.object(), i);
if (Object::checkType(item))
result.push_back(reinterpret_cast<SbkObject*>(item));
}
}
} else {
result.push_back(reinterpret_cast<SbkObject*>(pyObj));
}
return result;
}
static void decRefPyObjectList(const std::list<PyObject*>& lst, PyObject *skip)
{
std::list<PyObject*>::const_iterator iter = lst.begin();
while(iter != lst.end()) {
if (*iter != skip)
Py_DECREF(*iter);
++iter;
}
}
namespace ObjectType
{
bool checkType(PyTypeObject* type)
{
return PyType_IsSubtype(type, reinterpret_cast<PyTypeObject*>(&SbkObject_Type));
}
bool isUserType(PyTypeObject* type)
{
return checkType(type) && reinterpret_cast<SbkObjectType*>(type)->d->is_user_type;
}
bool canCallConstructor(PyTypeObject* myType, PyTypeObject* ctorType)
{
FindBaseTypeVisitor visitor(ctorType);
walkThroughClassHierarchy(myType, &visitor);
if (!visitor.found()) {
PyErr_Format(PyExc_TypeError, "%s isn't a direct base class of %s", ctorType->tp_name, myType->tp_name);
return false;
}
return true;
}
bool hasExternalCppConversions(SbkObjectType*) { return false; } // DEPRECATED.
bool isExternalConvertible(SbkObjectType* self, PyObject* obj) { return false; } // DEPRECATED.
void setExternalCppConversionFunction(SbkObjectType*, ExtendedToCppFunc) {} // DEPRECATED.
void setExternalIsConvertibleFunction(SbkObjectType*, ExtendedIsConvertibleFunc) {} // DEPRECATED.
void* callExternalCppConversion(SbkObjectType*, PyObject*) { return 0; } // DEPRECATED.
bool hasCast(SbkObjectType* type)
{
return type->d->mi_specialcast;
}
void* cast(SbkObjectType* sourceType, SbkObject* obj, PyTypeObject* targetType)
{
return sourceType->d->mi_specialcast(Object::cppPointer(obj, targetType), reinterpret_cast<SbkObjectType*>(targetType));
}
void setCastFunction(SbkObjectType* type, SpecialCastFunction func)
{
type->d->mi_specialcast = func;
}
void setOriginalName(SbkObjectType* self, const char* name)
{
if (self->d->original_name)
free(self->d->original_name);
self->d->original_name = strdup(name);
}
const char* getOriginalName(SbkObjectType* self)
{
return self->d->original_name;
}
void setTypeDiscoveryFunctionV2(SbkObjectType* self, TypeDiscoveryFuncV2 func)
{
self->d->type_discovery = func;
}
void setTypeDiscoveryFunction(SbkObjectType* self, TypeDiscoveryFunc func)
{
self->d->type_discovery = (TypeDiscoveryFuncV2)func;
}
TypeDiscoveryFunc getTypeDiscoveryFunction(SbkObjectType* self)
{
// This is an illegal cast because the return value is different,
// but nobody ever used this function, so... =]
return (TypeDiscoveryFunc)self->d->type_discovery;
}
void copyMultimpleheritance(SbkObjectType* self, SbkObjectType* other)
{
self->d->mi_init = other->d->mi_init;
self->d->mi_offsets = other->d->mi_offsets;
self->d->mi_specialcast = other->d->mi_specialcast;
}
void setMultipleIheritanceFunction(SbkObjectType* self, MultipleInheritanceInitFunction function)
{
self->d->mi_init = function;
}
MultipleInheritanceInitFunction getMultipleIheritanceFunction(SbkObjectType* self)
{
return self->d->mi_init;
}
void setDestructorFunction(SbkObjectType* self, ObjectDestructor func)
{
self->d->cpp_dtor = func;
}
void initPrivateData(SbkObjectType* self)
{
self->d = new SbkObjectTypePrivate;
memset(self->d, 0, sizeof(SbkObjectTypePrivate));
}
bool introduceWrapperType(PyObject* enclosingObject,
const char* typeName, const char* originalName,
SbkObjectType* type, ObjectDestructor cppObjDtor,
SbkObjectType* baseType, PyObject* baseTypes,
bool isInnerClass)
{
initPrivateData(type);
setOriginalName(type, originalName);
setDestructorFunction(type, cppObjDtor);
if (baseType) {
type->super.ht_type.tp_base = (PyTypeObject*)baseType;
if (baseTypes) {
for (int i = 0; i < PySequence_Fast_GET_SIZE(baseTypes); ++i)
BindingManager::instance().addClassInheritance((SbkObjectType*)PySequence_Fast_GET_ITEM(baseTypes, i), type);
type->super.ht_type.tp_bases = baseTypes;
} else {
BindingManager::instance().addClassInheritance(baseType, type);
}
}
if (PyType_Ready((PyTypeObject*)type) < 0)
return false;
if (isInnerClass)
return PyDict_SetItemString(enclosingObject, typeName, (PyObject*)type) == 0;
//PyModule_AddObject steals type's reference.
Py_INCREF((PyObject*)type);
return PyModule_AddObject(enclosingObject, typeName, (PyObject*)type) == 0;
}
void setSubTypeInitHook(SbkObjectType* self, SubTypeInitHook func)
{
self->d->subtype_init = func;
}
void* getTypeUserData(SbkObjectType* self)
{
return self->d->user_data;
}
void setTypeUserData(SbkObjectType* self, void* userData, DeleteUserDataFunc d_func)
{
self->d->user_data = userData;
self->d->d_func = d_func;
}
} // namespace ObjectType
namespace Object
{
bool checkType(PyObject* pyObj)
{
return ObjectType::checkType(pyObj->ob_type);
}
bool isUserType(PyObject* pyObj)
{
return ObjectType::isUserType(pyObj->ob_type);
}
static void setSequenceOwnership(PyObject* pyObj, bool owner)
{
if (PySequence_Check(pyObj)) {
std::list<SbkObject*> objs = splitPyObject(pyObj);
std::list<SbkObject*>::const_iterator it = objs.begin();
for(; it != objs.end(); ++it) {
if (owner)
getOwnership(*it);
else
releaseOwnership(*it);
}
} else if (Object::checkType(pyObj)) {
if (owner)
getOwnership(reinterpret_cast<SbkObject*>(pyObj));
else
releaseOwnership(reinterpret_cast<SbkObject*>(pyObj));
}
}
void setValidCpp(SbkObject* pyObj, bool value)
{
pyObj->d->validCppObject = value;
}
void setHasCppWrapper(SbkObject* pyObj, bool value)
{
pyObj->d->containsCppWrapper = value;
}
bool hasCppWrapper(SbkObject* pyObj)
{
return pyObj->d->containsCppWrapper;
}
bool wasCreatedByPython(SbkObject* pyObj)
{
return pyObj->d->cppObjectCreated;
}
void callCppDestructors(SbkObject* pyObj)
{
SbkObjectType* sbkType = reinterpret_cast<SbkObjectType*>(Py_TYPE(pyObj));
if (sbkType->d->is_multicpp) {
Shiboken::DtorCallerVisitor visitor(pyObj);
Shiboken::walkThroughClassHierarchy(Py_TYPE(pyObj), &visitor);
} else {
Shiboken::ThreadStateSaver threadSaver;
threadSaver.save();
sbkType->d->cpp_dtor(pyObj->d->cptr[0]);
}
delete[] pyObj->d->cptr;
pyObj->d->cptr = 0;
invalidate(pyObj);
}
bool hasOwnership(SbkObject* pyObj)
{
return pyObj->d->hasOwnership;
}
void getOwnership(SbkObject* self)
{
// skip if already have the ownership
if (self->d->hasOwnership)
return;
// skip if this object has parent
if (self->d->parentInfo && self->d->parentInfo->parent)
return;
// Get back the ownership
self->d->hasOwnership = true;
if (self->d->containsCppWrapper)
Py_DECREF((PyObject*) self); // Remove extra ref
else
makeValid(self); // Make the object valid again
}
void getOwnership(PyObject* pyObj)
{
if (pyObj)
setSequenceOwnership(pyObj, true);
}
void releaseOwnership(SbkObject* self)
{
// skip if the ownership have already moved to c++
SbkObjectType* selfType = reinterpret_cast<SbkObjectType*>(Py_TYPE(self));
if (!self->d->hasOwnership || Shiboken::Conversions::pythonTypeIsValueType(selfType->d->converter))
return;
// remove object ownership
self->d->hasOwnership = false;
// If We have control over object life
if (self->d->containsCppWrapper)
Py_INCREF((PyObject*) self); // keep the python object alive until the wrapper destructor call
else
invalidate(self); // If I do not know when this object will die We need to invalidate this to avoid use after
}
void releaseOwnership(PyObject* self)
{
setSequenceOwnership(self, false);
}
void invalidate(PyObject* pyobj)
{
std::list<SbkObject*> objs = splitPyObject(pyobj);
std::list<SbkObject*>::const_iterator it = objs.begin();
for(; it != objs.end(); it++)
invalidate(*it);
}
void invalidate(SbkObject* self)
{
// Skip if this object not is a valid object
if (!self || ((PyObject*)self == Py_None))
return;
if (!self->d->containsCppWrapper) {
self->d->validCppObject = false; // Mark object as invalid only if this is not a wrapper class
BindingManager::instance().releaseWrapper(self);
}
// If it is a parent invalidate all children.
if (self->d->parentInfo) {
// Create a copy because this list can be changed during the process
ChildrenList copy = self->d->parentInfo->children;
ChildrenList::iterator it = copy.begin();
for (; it != copy.end(); ++it) {
// invalidate the child
invalidate(*it);
// if the parent not is a wrapper class, then remove children from him, because We do not know when this object will be destroyed
if (!self->d->validCppObject)
removeParent(*it, true, true);
}
}
// If has ref to other objects invalidate all
if (self->d->referredObjects) {
RefCountMap& refCountMap = *(self->d->referredObjects);
RefCountMap::iterator iter;
for (iter = refCountMap.begin(); iter != refCountMap.end(); ++iter) {
const std::list<PyObject*> lst = iter->second;
std::list<PyObject*>::const_iterator it = lst.begin();
while(it != lst.end()) {
invalidate(*it);
++it;
}
}
}
}
void makeValid(SbkObject* self)
{
// Skip if this object not is a valid object
if (!self || ((PyObject*)self == Py_None) || self->d->validCppObject)
return;
// Mark object as invalid only if this is not a wrapper class
self->d->validCppObject = true;
// If it is a parent make all children valid
if (self->d->parentInfo) {
ChildrenList::iterator it = self->d->parentInfo->children.begin();
for (; it != self->d->parentInfo->children.end(); ++it)
makeValid(*it);
}
// If has ref to other objects make all valid again
if (self->d->referredObjects) {
RefCountMap& refCountMap = *(self->d->referredObjects);
RefCountMap::iterator iter;
for (iter = refCountMap.begin(); iter != refCountMap.end(); ++iter) {
const std::list<PyObject*> lst = iter->second;
std::list<PyObject*>::const_iterator it = lst.begin();
while(it != lst.end()) {
if (Shiboken::Object::checkType(*it))
makeValid(reinterpret_cast<SbkObject*>(*it));
++it;
}
}
}
}
bool hasParentInfo(SbkObject* pyObj)
{
return pyObj->d->parentInfo;
}
void* cppPointer(SbkObject* pyObj, PyTypeObject* desiredType)
{
PyTypeObject* type = Py_TYPE(pyObj);
int idx = 0;
if (reinterpret_cast<SbkObjectType*>(type)->d->is_multicpp)
idx = getTypeIndexOnHierarchy(type, desiredType);
if (pyObj->d->cptr)
return pyObj->d->cptr[idx];
return 0;
}
std::vector<void*> cppPointers(SbkObject* pyObj)
{
int n = getNumberOfCppBaseClasses(Py_TYPE(pyObj));
std::vector<void*> ptrs(n);
for (int i = 0; i < n; ++i)
ptrs[i] = pyObj->d->cptr[i];
return ptrs;
}
bool setCppPointer(SbkObject* sbkObj, PyTypeObject* desiredType, void* cptr)
{
int idx = 0;
if (reinterpret_cast<SbkObjectType*>(Py_TYPE(sbkObj))->d->is_multicpp)
idx = getTypeIndexOnHierarchy(Py_TYPE(sbkObj), desiredType);
bool alreadyInitialized = sbkObj->d->cptr[idx];
if (alreadyInitialized)
PyErr_SetString(PyExc_RuntimeError, "You can't initialize an object twice!");
else
sbkObj->d->cptr[idx] = cptr;
sbkObj->d->cppObjectCreated = true;
return !alreadyInitialized;
}
bool isValid(PyObject* pyObj)
{
if (!pyObj || pyObj == Py_None
|| Py_TYPE(pyObj->ob_type) != &SbkObjectType_Type) {
return true;
}
SbkObjectPrivate* priv = reinterpret_cast<SbkObject*>(pyObj)->d;
if (!priv->cppObjectCreated && isUserType(pyObj)) {
PyErr_Format(PyExc_RuntimeError, "'__init__' method of object's base class (%s) not called.", pyObj->ob_type->tp_name);
return false;
}
if (!priv->validCppObject) {
PyErr_Format(PyExc_RuntimeError, "Internal C++ object (%s) already deleted.", pyObj->ob_type->tp_name);
return false;
}
return true;
}
bool isValid(SbkObject* pyObj, bool throwPyError)
{