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/*
*
* Copyright (C) 2010 MeVis Medical Solutions AG All Rights Reserved.
*
* 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.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact information: MeVis Medical Solutions AG, Universitaetsallee 29,
* 28359 Bremen, Germany or:
*
* http://www.mevis.de
*
*/
//----------------------------------------------------------------------------------
/*!
// \file PythonQt.cpp
// \author Florian Link
// \author Last changed by $Author: florian $
// \date 2006-05
*/
//----------------------------------------------------------------------------------
#include "PythonQtClassInfo.h"
#include "PythonQtMethodInfo.h"
#include "PythonQt.h"
#include "PythonQtConversion.h"
#include <QMetaMethod>
#include <QMetaObject>
#include <QMetaEnum>
QHash<QByteArray, int> PythonQtMethodInfo::_parameterTypeDict;
PythonQtClassInfo::PythonQtClassInfo() {
_meta = nullptr;
_constructors = nullptr;
_destructor = nullptr;
_decoratorProvider = nullptr;
_decoratorProviderCB = nullptr;
_pythonQtClassWrapper = nullptr;
_shellSetInstanceWrapperCB = nullptr;
_metaTypeId = -1;
_typeSlots = 0;
_isQObject = false;
_enumsCreated = false;
_richCompareDetectionDone = false;
_searchPolymorphicHandlerOnParent = true;
_searchRefCountCB = true;
_refCallback = nullptr;
_unrefCallback = nullptr;
}
PythonQtClassInfo::~PythonQtClassInfo()
{
clearCachedMembers();
if (_constructors) {
_constructors->deleteOverloadsAndThis();
}
if (_destructor) {
_destructor->deleteOverloadsAndThis();
}
Q_FOREACH(PythonQtSlotInfo* info, _decoratorSlots) {
info->deleteOverloadsAndThis();
}
}
void PythonQtClassInfo::setupQObject(const QMetaObject* meta)
{
// _wrappedClassName is already set earlier in the class setup
_isQObject = true;
_meta = meta;
}
void PythonQtClassInfo::setupCPPObject(const QByteArray& classname)
{
_isQObject = false;
_wrappedClassName = classname;
_metaTypeId = QMetaType::type(classname);
if (_metaTypeId == 0) {
_metaTypeId = -1;
}
}
void PythonQtClassInfo::clearCachedMembers()
{
QHashIterator<QByteArray, PythonQtMemberInfo> i(_cachedMembers);
while (i.hasNext()) {
PythonQtMemberInfo member = i.next().value();
if (member._type== PythonQtMemberInfo::Slot || member._type== PythonQtMemberInfo::Signal) {
PythonQtSlotInfo* info = member._slot;
while (info) {
PythonQtSlotInfo* next = info->nextInfo();
delete info;
info = next;
}
}
}
}
int PythonQtClassInfo::findCharOffset(const char* sigStart, char someChar)
{
const char* sigEnd = sigStart;
char c;
do {
c = *sigEnd++;
} while (c!=someChar && c!=0);
return sigEnd-sigStart-1;
}
bool PythonQtClassInfo::lookForPropertyAndCache(const char* memberName)
{
if (!_meta) return false;
bool found = false;
const char* attributeName = memberName;
// look for properties
int i = _meta->indexOfProperty(attributeName);
#ifdef PYTHONQT_SUPPORT_NAME_PROPERTY
bool nameMapped = false;
if (i==-1) {
// try to map name to objectName
if (qstrcmp(attributeName, "name")==0) {
attributeName = "objectName";
nameMapped = true;
i = _meta->indexOfProperty(attributeName);
}
}
#endif
if (qstrcmp(attributeName, "singleShot") == 0 &&
className() == "QTimer") {
// ignore singleShot property, users need to use setSingleShot and isSingleShot instead...
i = -1;
}
if (i!=-1) {
PythonQtMemberInfo newInfo(_meta->property(i));
_cachedMembers.insert(attributeName, newInfo);
#ifdef PYTHONQT_SUPPORT_NAME_PROPERTY
if (nameMapped) {
_cachedMembers.insert(memberName, newInfo);
}
#endif
#ifdef PYTHONQT_DEBUG
std::cout << "caching property " << memberName << " on " << _meta->className() << std::endl;
#endif
found = true;
}
return found;
}
PythonQtSlotInfo* PythonQtClassInfo::recursiveFindDecoratorSlotsFromDecoratorProvider(const char* memberName, PythonQtSlotInfo* inputInfo, bool &found, QHash<QByteArray, PythonQtMemberInfo>& memberCache, int upcastingOffset)
{
inputInfo = findDecoratorSlotsFromDecoratorProvider(memberName, inputInfo, found, memberCache, upcastingOffset);
Q_FOREACH(const ParentClassInfo& info, _parentClasses) {
inputInfo = info._parent->recursiveFindDecoratorSlotsFromDecoratorProvider(memberName, inputInfo, found, memberCache, upcastingOffset+info._upcastingOffset);
}
return inputInfo;
}
PythonQtSlotInfo* PythonQtClassInfo::findDecoratorSlotsFromDecoratorProvider(const char* memberName, PythonQtSlotInfo* tail, bool &found, QHash<QByteArray, PythonQtMemberInfo>& memberCache, int upcastingOffset) {
QObject* decoratorProvider = decorator();
if (decoratorProvider) {
//qDebug()<< "looking " << decoratorProvider->metaObject()->className() << " " << memberName << " " << upcastingOffset;
const QMetaObject* meta = decoratorProvider->metaObject();
int numMethods = meta->methodCount();
int startFrom = QObject::staticMetaObject.methodCount();
for (int i = startFrom; i < numMethods; i++) {
QMetaMethod m = meta->method(i);
if ((m.methodType() == QMetaMethod::Method ||
m.methodType() == QMetaMethod::Slot) && m.access() == QMetaMethod::Public) {
QByteArray signature = PythonQtUtils::methodName(m);
bool isClassDeco = false;
if (signature.startsWith("static_")) {
// skip the static_classname_ part of the string
signature = signature.mid(7 + 1 + static_cast<int>(strlen(className())));
isClassDeco = true;
} else if (signature.startsWith("new_")) {
isClassDeco = true;
} else if (signature.startsWith("delete_")) {
isClassDeco = true;
}
// XXX no checking is currently done if the slots have correct first argument or not...
// check if same length and same name
if (signature == memberName) {
found = true;
PythonQtSlotInfo* info = new PythonQtSlotInfo(this, m, i, decoratorProvider, isClassDeco?PythonQtSlotInfo::ClassDecorator:PythonQtSlotInfo::InstanceDecorator);
info->setUpcastingOffset(upcastingOffset);
//qDebug()<< "adding " << decoratorProvider->metaObject()->className() << " " << memberName << " " << upcastingOffset;
if (tail) {
tail->setNextInfo(info);
} else {
PythonQtMemberInfo newInfo(info);
memberCache.insert(signature, newInfo);
}
tail = info;
}
}
}
}
tail = findDecoratorSlots(memberName, tail, found, memberCache, upcastingOffset);
// now look for slots/signals/methods on this level of the meta object
if (_meta) {
int numMethods = _meta->methodCount();
// start from methodOffset, to only add slots which are located in this class,
// and not in the parent class, which is traversed recursively later on.
// (if the class in not a QObject, we are working with a script wrapper QObject
// and need to read all slots/signals starting from 0).
int methodOffset = _isQObject?_meta->methodOffset():0;
for (int i = methodOffset; i < numMethods; i++) {
QMetaMethod m = _meta->method(i);
if (((m.methodType() == QMetaMethod::Method ||
m.methodType() == QMetaMethod::Slot) && m.access() == QMetaMethod::Public)
|| m.methodType()==QMetaMethod::Signal) {
QByteArray signature = PythonQtUtils::methodName(m);
// check if same length and same name
if (signature == memberName) {
found = true;
PythonQtSlotInfo* info = new PythonQtSlotInfo(this, m, i);
if (tail) {
tail->setNextInfo(info);
} else {
PythonQtMemberInfo newInfo(info);
memberCache.insert(signature, newInfo);
}
tail = info;
}
}
}
}
return tail;
}
bool PythonQtClassInfo::lookForMethodAndCache(const char* memberName)
{
bool found = false;
PythonQtSlotInfo* tail = nullptr;
// look for dynamic decorators in this class and in derived classes
// (do this first to allow overloading of existing slots with generated wrappers,
// e.g. QDialog::accept is overloaded with PythonQtWrapper_QDialog::accept decorator)
tail = recursiveFindDecoratorSlotsFromDecoratorProvider(memberName, tail, found, _cachedMembers, 0);
return found;
}
bool PythonQtClassInfo::lookForEnumAndCache(const QMetaObject* meta, const char* memberName)
{
bool found = false;
// look for enum values
int enumCount = meta->enumeratorCount();
for (int i=0;i<enumCount; i++) {
QMetaEnum e = meta->enumerator(i);
// we do not want flags, they will cause our values to appear two times
if (e.isFlag()) continue;
for (int j=0; j < e.keyCount(); j++) {
if (qstrcmp(e.key(j), memberName)==0) {
PyObject* enumType = findEnumWrapper(e.name());
if (enumType) {
PythonQtObjectPtr enumValuePtr;
enumValuePtr.setNewRef(PythonQtPrivate::createEnumValueInstance(enumType, e.value(j)));
PythonQtMemberInfo newInfo(enumValuePtr);
_cachedMembers.insert(memberName, newInfo);
#ifdef PYTHONQT_DEBUG
std::cout << "caching enum " << memberName << " on " << meta->className()->constData() << std::endl;
#endif
found = true;
break;
} else {
std::cerr << "enum " << e.name() << " not found on " << className().constData() << std::endl;
}
}
}
}
return found;
}
PythonQtMemberInfo PythonQtClassInfo::member(const char* memberName)
{
PythonQtMemberInfo info = _cachedMembers.value(memberName);
if (info._type != PythonQtMemberInfo::Invalid) {
return info;
} else {
bool found = false;
found = lookForPropertyAndCache(memberName);
if (!found) {
found = lookForMethodAndCache(memberName);
}
if (!found) {
if (_meta) {
// check enums in our meta object directly
found = lookForEnumAndCache(_meta, memberName);
}
if (!found) {
// check enums in the class hierachy of CPP classes
// look for dynamic decorators in this class and in derived classes
QList<QObject*> decoObjects;
recursiveCollectDecoratorObjects(decoObjects);
Q_FOREACH(QObject* deco, decoObjects) {
// call on ourself for caching, but with different metaObject():
found = lookForEnumAndCache(deco->metaObject(), memberName);
if (found) {
break;
}
}
}
}
if (!found) {
// maybe it is an enum wrapper?
PyObject* p = findEnumWrapper(memberName);
if (p) {
info._type = PythonQtMemberInfo::EnumWrapper;
info._pythonType = p;
_cachedMembers.insert(memberName, info);
found = true;
}
// maybe it is a nested class?
Q_FOREACH(PythonQtClassInfo* nestedClass, _nestedClasses) {
PyObject* pyClass = nestedClass->pythonQtClassWrapper();
if (pyClass) {
if (strcmp(memberName, nestedClass->unscopedClassName().constData()) == 0) {
info._type = PythonQtMemberInfo::NestedClass;
info._pythonType = pyClass;
_cachedMembers.insert(memberName, info);
found = true;
break;
}
}
}
}
if (!found) {
// since python keywords can not be looked up, we check if the name contains a single trailing _
// and remove that and look again, so that we e.g. find exec on an exec_ lookup
QByteArray mbrName(memberName);
if ((mbrName.length()>2) &&
(mbrName.at(mbrName.length()-1) == '_') &&
(mbrName.at(mbrName.length()-2) != '_')) {
mbrName = mbrName.mid(0,mbrName.length()-1);
found = lookForMethodAndCache(mbrName.constData());
if (found) {
return _cachedMembers.value(mbrName);
}
}
}
if (!found) {
// we store a NotFound member, so that we get a quick result for non existing members (e.g. operator_equal lookup)
info._type = PythonQtMemberInfo::NotFound;
_cachedMembers.insert(memberName, info);
}
}
return _cachedMembers.value(memberName);
}
void PythonQtClassInfo::recursiveCollectDecoratorObjects(QList<QObject*>& decoratorObjects) {
QObject* deco = decorator();
if (deco) {
decoratorObjects.append(deco);
}
Q_FOREACH(const ParentClassInfo& info, _parentClasses) {
info._parent->recursiveCollectDecoratorObjects(decoratorObjects);
}
}
void PythonQtClassInfo::recursiveCollectClassInfos(QList<PythonQtClassInfo*>& classInfoObjects) {
classInfoObjects.append(this);
Q_FOREACH(const ParentClassInfo& info, _parentClasses) {
info._parent->recursiveCollectClassInfos(classInfoObjects);
}
}
PythonQtSlotInfo* PythonQtClassInfo::findDecoratorSlots(const char* memberName, PythonQtSlotInfo* tail, bool &found, QHash<QByteArray, PythonQtMemberInfo>& memberCache, int upcastingOffset)
{
QListIterator<PythonQtSlotInfo*> it(_decoratorSlots);
while (it.hasNext()) {
PythonQtSlotInfo* infoOrig = it.next();
QByteArray signature = PythonQtUtils::methodName(*infoOrig->metaMethod());
if (signature.startsWith("static_")) {
int offset = signature.indexOf('_', 7);
signature = signature.mid(offset+1);
}
if (signature == memberName) {
//make a copy, otherwise we will have trouble on overloads!
PythonQtSlotInfo* info = new PythonQtSlotInfo(*infoOrig);
info->setUpcastingOffset(upcastingOffset);
found = true;
if (tail) {
tail->setNextInfo(info);
} else {
PythonQtMemberInfo newInfo(info);
memberCache.insert(signature, newInfo);
}
tail = info;
}
}
return tail;
}
void PythonQtClassInfo::listDecoratorSlotsFromDecoratorProvider(QStringList& list, bool metaOnly) {
QObject* decoratorProvider = decorator();
if (decoratorProvider) {
const QMetaObject* meta = decoratorProvider->metaObject();
int numMethods = meta->methodCount();
int startFrom = QObject::staticMetaObject.methodCount();
for (int i = startFrom; i < numMethods; i++) {
QMetaMethod m = meta->method(i);
if ((m.methodType() == QMetaMethod::Method ||
m.methodType() == QMetaMethod::Slot) && m.access() == QMetaMethod::Public) {
QByteArray signature = PythonQtUtils::methodName(m);
bool isClassDeco = false;
if (signature.startsWith("static_")) {
// skip the static_classname_ part of the string
signature = signature.mid(7 + 1 + static_cast<int>(strlen(className())));
isClassDeco = true;
} else if (signature.startsWith("new_")) {
continue;
} else if (signature.startsWith("delete_")) {
continue;
}
// XXX no checking is currently done if the slots have correct first argument or not...
if (!metaOnly || isClassDeco) {
list << QString::fromLatin1(signature.constData());
}
}
}
}
// look for global decorator slots
QListIterator<PythonQtSlotInfo*> it(_decoratorSlots);
while (it.hasNext()) {
PythonQtSlotInfo* slot = it.next();
QByteArray name = slot->slotName();
if (name.startsWith("static_")) {
int idx = name.indexOf('_');
idx = name.indexOf('_', idx+1);
name = name.mid(idx+1);
} else if (name.startsWith("new_")) {
continue;
} else if (name.startsWith("delete_")) {
continue;
}
if (!metaOnly || slot->isClassDecorator()) {
list << name;
}
}
}
QStringList PythonQtClassInfo::propertyList()
{
QStringList l;
if (_isQObject && _meta) {
int i;
int numProperties = _meta->propertyCount();
for (i = 0; i < numProperties; i++) {
QMetaProperty p = _meta->property(i);
l << QString(p.name());
}
}
QStringList members = memberList();
foreach(QString member, members) {
if (member.startsWith("py_get_")) {
l << member.mid(7);
}
}
return l;
}
QStringList PythonQtClassInfo::memberList()
{
decorator();
QStringList l;
// normal slots of QObject (or wrapper QObject)
if (_meta) {
int numMethods = _meta->methodCount();
bool skipQObj = !_isQObject;
for (int i = skipQObj?QObject::staticMetaObject.methodCount():0; i < numMethods; i++) {
QMetaMethod m = _meta->method(i);
if (((m.methodType() == QMetaMethod::Method ||
m.methodType() == QMetaMethod::Slot) && m.access() == QMetaMethod::Public)
|| m.methodType()==QMetaMethod::Signal) {
l << PythonQtUtils::methodName(m);
}
}
}
{
// look for dynamic decorators in this class and in derived classes
QList<PythonQtClassInfo*> infos;
recursiveCollectClassInfos(infos);
Q_FOREACH(PythonQtClassInfo* info, infos) {
info->listDecoratorSlotsFromDecoratorProvider(l, false);
}
}
// List enumerator keys...
QList<const QMetaObject*> enumMetaObjects;
if (_meta) {
enumMetaObjects << _meta;
}
// check enums in the class hierachy of CPP classes
QList<QObject*> decoObjects;
recursiveCollectDecoratorObjects(decoObjects);
Q_FOREACH(QObject* deco, decoObjects) {
enumMetaObjects << deco->metaObject();
}
Q_FOREACH(const QMetaObject* meta, enumMetaObjects) {
for (int i = 0; i<meta->enumeratorCount(); i++) {
QMetaEnum e = meta->enumerator(i);
l << e.name();
// we do not want flags, they will cause our values to appear two times
if (e.isFlag()) continue;
for (int j=0; j < e.keyCount(); j++) {
l << QString(e.key(j));
}
}
}
Q_FOREACH(PythonQtClassInfo* nestedClass, _nestedClasses) {
PyObject* pyClass = nestedClass->pythonQtClassWrapper();
if (pyClass) {
QByteArray name = nestedClass->unscopedClassName();
l << QString(name);
}
}
return QSet<QString>::fromList(l).toList();
}
const QByteArray& PythonQtClassInfo::className() const
{
return _wrappedClassName;
}
void* PythonQtClassInfo::castTo(void* ptr, const char* classname)
{
if (ptr==nullptr) {
return nullptr;
}
if (_wrappedClassName == classname) {
return ptr;
}
Q_FOREACH(const ParentClassInfo& info, _parentClasses) {
void* result = info._parent->castTo((char*)ptr + info._upcastingOffset, classname);
if (result) {
return result;
}
}
return nullptr;
}
bool PythonQtClassInfo::inherits(const char* name)
{
if (_wrappedClassName == name) {
return true;
}
Q_FOREACH(const ParentClassInfo& info, _parentClasses) {
if (info._parent->inherits(name)) {
return true;
}
}
return false;
}
bool PythonQtClassInfo::inherits(PythonQtClassInfo* classInfo)
{
if (classInfo == this) {
return true;
}
Q_FOREACH(const ParentClassInfo& info, _parentClasses) {
if (info._parent->inherits(classInfo)) {
return true;
}
}
return false;
}
QString PythonQtClassInfo::help()
{
decorator();
QString h;
h += QString("--- ") + QString(className()) + QString(" ---\n");
if (_isQObject) {
h += "Properties:\n";
int i;
int numProperties = _meta->propertyCount();
for (i = 0; i < numProperties; i++) {
QMetaProperty p = _meta->property(i);
h += QString(p.name()) + " (" + QString(p.typeName()) + " )\n";
}
}
if (constructors()) {
h += "Constructors:\n";
PythonQtSlotInfo* constr = constructors();
while (constr) {
h += constr->fullSignature() + "\n";
constr = constr->nextInfo();
}
}
h += "Slots:\n";
h += "QString help()\n";
h += "QString className()\n";
if (_meta) {
int numMethods = _meta->methodCount();
for (int i = 0; i < numMethods; i++) {
QMetaMethod m = _meta->method(i);
if ((m.methodType() == QMetaMethod::Method ||
m.methodType() == QMetaMethod::Slot) && m.access() == QMetaMethod::Public) {
PythonQtSlotInfo slot(this, m, i);
h += slot.fullSignature()+ "\n";
}
}
}
// TODO xxx : decorators and enums from decorator() are missing...
// maybe we can reuse memberlist()?
if (_meta && _meta->enumeratorCount()) {
h += "Enums:\n";
for (int i = 0; i<_meta->enumeratorCount(); i++) {
QMetaEnum e = _meta->enumerator(i);
h += QString(e.name()) + " {";
for (int j=0; j < e.keyCount(); j++) {
if (j) { h+= ", "; }
h += e.key(j);
}
h += " }\n";
}
}
if (_isQObject && _meta) {
int numMethods = _meta->methodCount();
if (numMethods>0) {
h += "Signals:\n";
for (int i = 0; i < numMethods; i++) {
QMetaMethod m = _meta->method(i);
if (m.methodType() == QMetaMethod::Signal) {
h += QString(PythonQtUtils::signature(m)) + "\n";
}
}
}
}
return h;
}
PythonQtSlotInfo* PythonQtClassInfo::constructors()
{
if (!_constructors) {
// force creation of lazy decorator, which will register the decorators
decorator();
}
return _constructors;
}
PythonQtSlotInfo* PythonQtClassInfo::destructor()
{
if (!_destructor) {
// force creation of lazy decorator, which will register the decorators
decorator();
}
if (!_destructor) {
if (!_parentClasses.isEmpty()) {
_destructor = _parentClasses.at(0)._parent->destructor();
}
}
return _destructor;
}
void PythonQtClassInfo::addConstructor(PythonQtSlotInfo* info)
{
PythonQtSlotInfo* prev = constructors();
if (prev) {
info->setNextInfo(prev->nextInfo());
prev->setNextInfo(info);
} else {
_constructors = info;
}
}
void PythonQtClassInfo::addDecoratorSlot(PythonQtSlotInfo* info)
{
_decoratorSlots.append(info);
}
void PythonQtClassInfo::setDestructor(PythonQtSlotInfo* info)
{
if (_destructor) {
_destructor->deleteOverloadsAndThis();
}
_destructor = info;
}
void PythonQtClassInfo::setMetaObject(const QMetaObject* meta)
{
_meta = meta;
clearCachedMembers();
}
QObject* PythonQtClassInfo::decorator()
{
if (!_decoratorProvider && _decoratorProviderCB) {
_decoratorProvider = (*_decoratorProviderCB)();
if (_decoratorProvider) {
_decoratorProvider->setParent(PythonQt::priv());
// setup enums early, since they might be needed by the constructor decorators:
if (!_enumsCreated) {
createEnumWrappers(_decoratorProvider);
}
PythonQt::priv()->addDecorators(_decoratorProvider, PythonQtPrivate::ConstructorDecorator | PythonQtPrivate::DestructorDecorator);
}
}
// check if enums need to be created and create them if they are not yet created
if (!_enumsCreated) {
createEnumWrappers(_decoratorProvider);
}
return _decoratorProvider;
}
void* PythonQtClassInfo::recursiveCastDownIfPossible(void* ptr, const char** resultClassName)
{
if (!_polymorphicHandlers.isEmpty()) {
Q_FOREACH(PythonQtPolymorphicHandlerCB* cb, _polymorphicHandlers) {
void* resultPtr = (*cb)(ptr, resultClassName);
if (resultPtr) {
return resultPtr;
}
}
}
Q_FOREACH(const ParentClassInfo& info, _parentClasses) {
if (!info._parent->isQObject()) {
void* resultPtr = info._parent->recursiveCastDownIfPossible((char*)ptr + info._upcastingOffset, resultClassName);
if (resultPtr) {
return resultPtr;
}
}
}
return nullptr;
}
void* PythonQtClassInfo::castDownIfPossible(void* ptr, PythonQtClassInfo** resultClassInfo)
{
const char* className;
// this would do downcasting recursively...
// It is too expensive, since it walks the whole hierarchy on each cast...
// void* resultPtr = recursiveCastDownIfPossible(ptr, &className);
if (_polymorphicHandlers.isEmpty() && _searchPolymorphicHandlerOnParent) {
// if we don't have a polymorphic handler, seach
// in the first parent class hierarchy, not for multiple inheritance...
// (for speed reasons and because of casting offsets...)
// Only do this once...
_searchPolymorphicHandlerOnParent = false;
if (_parentClasses.count()>0) {
PythonQtClassInfo* parent = _parentClasses[0]._parent;
while (parent) {
if (parent->_polymorphicHandlers.count()>0) {
// copy handlers from parent class, to speedup next lookup
_polymorphicHandlers = parent->_polymorphicHandlers;
break;
}
if (parent->_parentClasses.count()>0) {
parent = parent->_parentClasses[0]._parent;
} else {
parent = nullptr;
}
}
}
}
// we only do downcasting on the base object, not on the whole inheritance tree...
void* resultPtr = nullptr;
if (!_polymorphicHandlers.isEmpty()) {
Q_FOREACH(PythonQtPolymorphicHandlerCB* cb, _polymorphicHandlers) {
resultPtr = (*cb)(ptr, &className);
if (resultPtr) {
break;
}
}
}
if (resultPtr) {
*resultClassInfo = PythonQt::priv()->getClassInfo(className);
} else {
*resultClassInfo = this;
resultPtr = ptr;
}
return resultPtr;
}
PyObject* PythonQtClassInfo::findEnumWrapper(const QByteArray& name, PythonQtClassInfo* localScope, bool* isLocalEnum)
{
if (isLocalEnum) {
*isLocalEnum = true;
}
int scopePos = name.lastIndexOf("::");
if (scopePos != -1) {
if (isLocalEnum) {
*isLocalEnum = false;
}
// split into scope and enum name
QByteArray enumScope = name.mid(0,scopePos);
QByteArray enumName = name.mid(scopePos+2);
PythonQtClassInfo* info = PythonQt::priv()->getClassInfo(enumScope);
if (info) {
return info->findEnumWrapper(enumName);
} else{
return nullptr;
}
}
if (localScope) {
return localScope->findEnumWrapper(name);
} else {
return nullptr;
}
}
void PythonQtClassInfo::createEnumWrappers(const QMetaObject* meta)
{
for (int i = meta->enumeratorOffset();i<meta->enumeratorCount();i++) {
QMetaEnum e = meta->enumerator(i);
PythonQtObjectPtr p;
p.setNewRef(PythonQtPrivate::createNewPythonQtEnumWrapper(e.name(), _pythonQtClassWrapper));
_enumWrappers.append(p);
}
}
void PythonQtClassInfo::createEnumWrappers(const QObject* decoratorProvider)
{
if (!_enumsCreated) {
_enumsCreated = true;
if (_meta) {
createEnumWrappers(_meta);
}
if (decoratorProvider) {
createEnumWrappers(decoratorProvider->metaObject());
}
Q_FOREACH(const ParentClassInfo& info, _parentClasses) {
// trigger decorator() instead of createEnumWrappers(),
// which will then call createEnumWrappers().
info._parent->decorator();
}
}
}
PyObject* PythonQtClassInfo::findEnumWrapper(const char* name) {
// force enum creation
if (!_enumsCreated) {
// trigger decorator() instead of createEnumWrappers(),
// which will then call createEnumWrappers().
decorator();
}
Q_FOREACH(const PythonQtObjectPtr& p, _enumWrappers) {
const char* className = ((PyTypeObject*)p.object())->tp_name;
if (qstrcmp(className, name)==0) {
return p.object();
}
}
Q_FOREACH(const ParentClassInfo& info, _parentClasses) {
PyObject* p = info._parent->findEnumWrapper(name);
if (p) return p;
}
return nullptr;
}
void PythonQtClassInfo::setDecoratorProvider( PythonQtQObjectCreatorFunctionCB* cb )
{
_decoratorProviderCB = cb;
_decoratorProvider = nullptr;
_enumsCreated = false;
}
void PythonQtClassInfo::clearNotFoundCachedMembers()
{
// remove all not found entries, since a new decorator means new slots,
// which might have been cached as "NotFound" already.
QMutableHashIterator<QByteArray, PythonQtMemberInfo> it(_cachedMembers);
while (it.hasNext()) {
it.next();
if (it.value()._type == PythonQtMemberInfo::NotFound) {
it.remove();
}
}
}
void PythonQtClassInfo::addNestedClass(PythonQtClassInfo* info)
{
_nestedClasses.append(info);
}
QByteArray PythonQtClassInfo::unscopedClassName() const
{
int index = _wrappedClassName.indexOf("::");
if (index > 0) {
return _wrappedClassName.mid(index + 2);
} else {
return _wrappedClassName;
}
}
PyObject* PythonQtClassInfo::copyObject( void* cppObject )
{
PythonQtClassInfo* info;
cppObject = castDownIfPossible(cppObject, &info);
if (info->metaTypeId() != PythonQtMethodInfo::Unknown) {
// use meta type to copy the object
return PythonQtConv::createCopyFromMetaType(info->metaTypeId(), cppObject);
} else {
// use copy constructor
PythonQtSlotInfo* slot = info->getCopyConstructor();
if (slot) {
void* result;
void* args[2];
args[0] = &result;
args[1] = cppObject;
{
PythonQtSlotInfo::invokeQtMethod(slot->decorator(), slot, args);
}
if (result) {
PythonQtInstanceWrapper* wrapper = (PythonQtInstanceWrapper*)PythonQt::priv()->wrapPtr(result, info->className());
if (wrapper) {
wrapper->_ownedByPythonQt = true;
}
return (PyObject*)wrapper;
}
} else {
std::cerr << "PythonQt: Can't create a copy of '" << info->_wrappedClassName.constData() << "', either use qRegisterMetaType() or add a copy constructor to the decorator/wrapper." << std::endl;
}
}
return nullptr;
}
PythonQtSlotInfo* PythonQtClassInfo::getCopyConstructor()
{
PythonQtSlotInfo* construc = constructors();
while (construc) {
if ((construc->parameterCount() == 2) &&
(construc->parameters().at(1).name == _wrappedClassName) &&
(construc->parameters().at(1).pointerCount == 0)) {
return construc;
}
construc = construc->nextInfo();
}
return nullptr;
}
void PythonQtClassInfo::setReferenceCounting( PythonQtVoidPtrCB* refCB, PythonQtVoidPtrCB* unrefCB )
{
_refCallback = refCB;
_unrefCallback = unrefCB;
}
PythonQtVoidPtrCB* PythonQtClassInfo::referenceCountingRefCB()
{
if (_searchRefCountCB) {
updateRefCountingCBs();
}
return _refCallback;
}
PythonQtVoidPtrCB* PythonQtClassInfo::referenceCountingUnrefCB()
{
if (_searchRefCountCB) {
updateRefCountingCBs();
}
return _unrefCallback;
}
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