bool QoreSmokeBinding::callMethod(Smoke::Index method, void *obj, Smoke::Stack args, bool isAbstract)
{
//printd(0, "QoreSmokeBinding::callMethod() %s::%s() method=%d obj=%p isAbstract=%s (virt=%s)\n", smoke->classes[smoke->methods[method].classId].className, smoke->methodNames[smoke->methods[method].name], method, obj, isAbstract ? "true" : "false", qore_smoke_is_virtual() ? "true" : "false");
if (qore_smoke_is_virtual()) {
qore_smoke_clear_virtual();
//printd(0, "QoreSmokeBinding::callMethod() qore_smoke_is_virtual, returning to Smoke\n");
return false;
}
ExceptionSink xsink;
Smoke::Method meth = smoke->methods[method];
const char * cname = smoke->classes[meth.classId].className;
const char * mname = smoke->methodNames[meth.name];
QoreClass *qc;
QoreObject *o = getQoreObject(meth.classId, obj, qc);
// if (!strcmp(mname, "paintEngine"))
// printd(0, "QoreSmokeBinding::callMethod() %s::%s() qore object=%p\n", cname, mname, o);
if (!o) {
// we must have an implementation for abstract methods
#ifdef DEBUG
if (isAbstract) {
printd(0, "trying to execute pure virtual method %s::%s() obj=%p\n", cname, mname, obj);
xsink.raiseException("QT-ABSTRACT-METHOD-ERROR", "The Qt library tried to execute pure virtual %s::%s(), but the object has been deleted", cname, mname);
xsink.handleExceptions();
}
#endif
assert(!isAbstract);
return false;
}
if (!strcmp(mname, "qt_metacall")) {
printd(5, "QoreSmokeBinding::callMethod() className: %s::%s obj: %p\n", cname, mname, obj);
// get the QoreSmokePrivate info
ReferenceHolder<QoreSmokePrivateQObjectData> qsp(reinterpret_cast<QoreSmokePrivateQObjectData *>(o->getReferencedPrivateData(QC_QOBJECT->getID(), &xsink)), &xsink);
if (!qsp) {
assert(xsink);
return false;
}
// if the object has been deleted, or is not a signal/slot invokation, then return false
if (!qsp->qobject() || args[1].s_enum != QMetaObject::InvokeMetaMethod)
return false;
int mc = qsp->getParentMethodCount();
// see if call is for a method in a parent class
if (args[2].s_int < mc)
return false;
// get method offset in this class
args[2].s_int -= mc;
printd(5, "QoreSmokeBinding::callMethod() %s::%s() method=%d obj=%p qsp=%p isAbstract=%s\n", smoke->classes[smoke->methods[method].classId].className, smoke->methodNames[smoke->methods[method].name], method, obj, *qsp, isAbstract ? "true" : "false");
// handle the signal, which is connected to a dynamic method (signal or slot)
qsp->handleSignal(0, args[2].s_int, (void**)args[3].s_voidp);
args[0].s_int = -1;
return true;
}
// first setup arguments so a user method variant can be found
Smoke::Index *idx = smoke->argumentList + meth.args;
type_vec_t typeInfoList;
while (*idx) {
Smoke::Type &t = smoke->types[*idx];
idx++;
// get argument type to find variant
bool valid;
const QoreTypeInfo *typeInfo = getQtTypeInfo(t, valid);
// if we have an unrecognized type, then we cannot have overloaded this method either
if (!typeInfo || !valid) {
assert(!isAbstract);
return false;
}
typeInfoList.push_back(typeInfo);
}
// see if there is a user method at all
const QoreMethod *qmethod;
const QoreExternalMethodVariant *variant = o->getClass()->findUserMethodVariant(mname, qmethod, typeInfoList);
printd(5, "QoreSmokeBinding::callMethod() virtual method %s::%s() method=%p variant=%p isAbstract=%d\n", o->getClassName(), mname, qmethod, variant, isAbstract);
if (!variant) {
//printd(0, "QoreSmokeBinding::callMethod() virtual method %s::%s() not found\n", o->getClassName(), mname);
if (!isAbstract)
return false;
xsink.raiseException("QT-ABSTRACT-METHOD-ERROR", "The Qt library tried to execute pure virtual %s::%s(), but this method is not implemented in the %s class", o->getClassName(), mname, o->getClassName());
// FIXME: instead of assert'ing, since the function is abstract, we have to
// create the default value for the return type and return true
#ifdef DEBUG
// call this so we can see the exception before the process aborts
xsink.handleExceptions();
assert(false);
#endif
return true;
}
//printd(0, "QoreSmokeBinding::callMethod() creating args list for %s::%s() (arg count: %d)\n", o->getClassName(), mname, typeList.size());
ReferenceHolder<QoreListNode> qoreArgs(new QoreListNode(), &xsink);
QList<Smoke::Type> typeList;
idx = smoke->argumentList + meth.args;
int i = 1;
while (*idx) {
Smoke::Type &t = smoke->types[*(idx++)];
qoreArgs->push(Marshalling::stackToQore(smoke, t, args[i++], &xsink));
if (xsink) {
if (!isAbstract)
return false;
// FIXME: instead of assert'ing, since the function is abstract, we have to
// create the default value for the return type and return true
#ifdef DEBUG
// call this so we can see the exception before the process aborts
xsink.handleExceptions();
assert(false);
#endif
return true;
}
}
//printd(5, "QoreSmokeBinding::callMethod() calling method smoke=%s::%s(), qore=%s::%s() args=%d valid=%d xsink=%d\n", cname, mname, qoreMethod->getClassName(), mname, typeList.size(), o->isValid(), (bool)xsink);
ReferenceHolder<AbstractQoreNode> aNode(o->evalMethodVariant(*qmethod, variant, *qoreArgs, &xsink), &xsink);
Smoke::Type &rt = smoke->types[meth.ret];
if (CommonQoreMethod::qoreToStackStatic(smoke, &xsink, args[0], cname, mname, rt, *aNode, -1, 0, true) == -1) {
if (!isAbstract)
return false;
// FIXME: instead of assert'ing, since the function is abstract, we have to
// create the default value for the return type and return true
#ifdef DEBUG
// call this so we can see the exception before the process aborts
xsink.handleExceptions();
assert(false);
#endif
return true;
}
return true;
}
// returns a RunTimeObjectMethodReference or NULL if there's an exception
QoreValue ParseObjectMethodReferenceNode::evalValueImpl(bool& needs_deref, ExceptionSink* xsink) const {
// evaluate lvalue expression
ReferenceHolder<AbstractQoreNode> lv(exp->eval(xsink), xsink);
if (*xsink)
return QoreValue();
QoreObject* o = (*lv) && (*lv)->getType() == NT_OBJECT ? reinterpret_cast<QoreObject*>(*lv) : 0;
if (!o) {
xsink->raiseException("OBJECT-METHOD-REFERENCE-ERROR", "expression does not evaluate to an object");
return QoreValue();
}
//printd(5, "ParseObjectMethodReferenceNode::evalImpl() this: %p o: %p %s::%s() m: %p\n", this, o, o->getClassName(), method.c_str(), m);
const QoreClass* oc = o->getClass();
// find the method at runtime if necessary
if (!m) {
// serialize method resolution at runtime
AutoLocker al(lck);
// check m again inside the lock (this way we avoid the lock in the common case where the method has already been resolved)
if (!m) {
bool m_priv = false;
m = oc->findMethod(method.c_str(), m_priv);
if (!m) {
m = oc->findStaticMethod(method.c_str(), m_priv);
if (!m) {
xsink->raiseException("OBJECT-METHOD-REFERENCE-ERROR", "cannot resolve reference to %s::%s(): unknown method", o->getClassName(), method.c_str());
return QoreValue();
}
}
if (m_priv && !qore_class_private::runtimeCheckPrivateClassAccess(*oc)) {
if (m->isPrivate())
xsink->raiseException("ILLEGAL-CALL-REFERENCE", "cannot create a call reference to private %s::%s() from outside the class", o->getClassName(), method.c_str());
else
xsink->raiseException("ILLEGAL-CALL-REFERENCE", "cannot create a call reference to %s::%s() because the parent class that implements the method (%s::%s()) is privately inherited", o->getClassName(), method.c_str(), m->getClass()->getName(), method.c_str());
return QoreValue();
}
}
}
if (oc == m->getClass() || oc == qc)
return new RunTimeResolvedMethodReferenceNode(o, m);
return new RunTimeObjectMethodReferenceNode(o, method.c_str());
}