void contextGetProperty(QQmlContext_ *context, QString_ *name, DataValue *result)
{
QQmlContext *qcontext = reinterpret_cast<QQmlContext *>(context);
const QString *qname = reinterpret_cast<QString *>(name);
QVariant var = qcontext->contextProperty(*qname);
packDataValue(&var, result);
}
void objectFindChild(QObject_ *object, QString_ *name, DataValue *resultdv)
{
QObject *qobject = reinterpret_cast<QObject *>(object);
QString *qname = reinterpret_cast<QString *>(name);
QVariant var;
QObject *result = qobject->findChild<QObject *>(*qname);
if (result) {
var.setValue(result);
}
packDataValue(&var, resultdv);
}
int objectGetProperty(QObject_ *object, const char *name, DataValue *result)
{
QObject *qobject = reinterpret_cast<QObject *>(object);
QVariant var = qobject->property(name);
packDataValue(&var, result);
if (!var.isValid() && qobject->metaObject()->indexOfProperty(name) == -1) {
// TODO May have to check the dynamic property names too.
return 0;
}
return 1;
}
error *objectInvoke(QObject_ *object, const char *method, int methodLen, DataValue *resultdv, DataValue *paramsdv, int paramsLen)
{
QObject *qobject = reinterpret_cast<QObject *>(object);
QVariant result;
QVariant param[MaxParams];
QGenericArgument arg[MaxParams];
for (int i = 0; i < paramsLen; i++) {
unpackDataValue(¶msdv[i], ¶m[i]);
arg[i] = Q_ARG(QVariant, param[i]);
}
if (paramsLen > 10) {
panicf("fix the parameter dispatching");
}
const QMetaObject *metaObject = qobject->metaObject();
// Walk backwards so descendants have priority.
for (int i = metaObject->methodCount()-1; i >= 0; i--) {
QMetaMethod metaMethod = metaObject->method(i);
QMetaMethod::MethodType methodType = metaMethod.methodType();
if (methodType == QMetaMethod::Method || methodType == QMetaMethod::Slot) {
QByteArray name = metaMethod.name();
if (name.length() == methodLen && qstrncmp(name.constData(), method, methodLen) == 0) {
if (metaMethod.parameterCount() < paramsLen) {
// TODO Might continue looking to see if a different signal has the same name and enough arguments.
return errorf("method \"%s\" has too few parameters for provided arguments", method);
}
bool ok;
if (metaMethod.returnType() == QMetaType::Void) {
ok = metaMethod.invoke(qobject, Qt::DirectConnection,
arg[0], arg[1], arg[2], arg[3], arg[4], arg[5], arg[6], arg[7], arg[8], arg[9]);
} else {
ok = metaMethod.invoke(qobject, Qt::DirectConnection, Q_RETURN_ARG(QVariant, result),
arg[0], arg[1], arg[2], arg[3], arg[4], arg[5], arg[6], arg[7], arg[8], arg[9]);
}
if (!ok) {
return errorf("invalid parameters to method \"%s\"", method);
}
packDataValue(&result, resultdv);
return 0;
}
}
}
return errorf("object does not expose a method \"%s\"", method);
}
int GoValueMetaObject::metaCall(QMetaObject::Call c, int idx, void **a)
{
//qWarning() << "GoValueMetaObject::metaCall" << c << idx;
switch (c) {
case QMetaObject::ReadProperty:
case QMetaObject::WriteProperty:
{
// TODO Cache propertyOffset, methodOffset (and maybe qmlEngine)
int propOffset = propertyOffset();
if (idx < propOffset) {
return value->qt_metacall(c, idx, a);
}
GoMemberInfo *memberInfo = typeInfo->fields;
for (int i = 0; i < typeInfo->fieldsLen; i++) {
if (memberInfo->metaIndex == idx) {
if (c == QMetaObject::ReadProperty) {
DataValue result;
hookGoValueReadField(qmlEngine(value), ref, memberInfo->reflectIndex, memberInfo->reflectGetIndex, memberInfo->reflectSetIndex, &result);
if (memberInfo->memberType == DTListProperty) {
if (result.dataType != DTListProperty) {
panicf("reading DTListProperty field returned non-DTListProperty result");
}
QQmlListProperty<QObject> *in = *reinterpret_cast<QQmlListProperty<QObject> **>(result.data);
QQmlListProperty<QObject> *out = reinterpret_cast<QQmlListProperty<QObject> *>(a[0]);
*out = *in;
// TODO Could provide a single variable in the stack to ReadField instead.
delete in;
} else {
QVariant *out = reinterpret_cast<QVariant *>(a[0]);
unpackDataValue(&result, out);
}
} else {
DataValue assign;
QVariant *in = reinterpret_cast<QVariant *>(a[0]);
packDataValue(in, &assign);
hookGoValueWriteField(qmlEngine(value), ref, memberInfo->reflectIndex, memberInfo->reflectSetIndex, &assign);
activate(value, methodOffset() + (idx - propOffset), 0);
}
return -1;
}
memberInfo++;
}
QMetaProperty prop = property(idx);
qWarning() << "Property" << prop.name() << "not found!?";
break;
}
case QMetaObject::InvokeMetaMethod:
{
if (idx < methodOffset()) {
return value->qt_metacall(c, idx, a);
}
GoMemberInfo *memberInfo = typeInfo->methods;
for (int i = 0; i < typeInfo->methodsLen; i++) {
if (memberInfo->metaIndex == idx) {
// args[0] is the result if any.
DataValue args[1 + MaxParams];
for (int i = 1; i < memberInfo->numIn+1; i++) {
packDataValue(reinterpret_cast<QVariant *>(a[i]), &args[i]);
}
hookGoValueCallMethod(qmlEngine(value), ref, memberInfo->reflectIndex, args);
if (memberInfo->numOut > 0) {
unpackDataValue(&args[0], reinterpret_cast<QVariant *>(a[0]));
}
return -1;
}
memberInfo++;
}
QMetaMethod m = method(idx);
qWarning() << "Method" << m.name() << "not found!?";
break;
}
default:
break; // Unhandled.
}
return -1;
}
void packDataValue(QVariant_ *var, DataValue *value)
{
QVariant *qvar = reinterpret_cast<QVariant *>(var);
// Some assumptions are made below regarding the size of types.
// There's apparently no better way to handle this since that's
// how the types with well defined sizes (qint64) are mapped to
// meta-types (QMetaType::LongLong).
switch ((int)qvar->type()) {
case QVariant::Invalid:
value->dataType = DTInvalid;
break;
case QMetaType::QUrl:
*qvar = qvar->value<QUrl>().toString();
// fallthrough
case QMetaType::QString:
{
value->dataType = DTString;
QByteArray ba = qvar->toByteArray();
*(char**)(value->data) = local_strdup(ba.constData());
value->len = ba.size();
break;
}
case QMetaType::Bool:
value->dataType = DTBool;
*(qint8*)(value->data) = (qint8)qvar->toInt();
break;
case QMetaType::LongLong:
// Some of these entries will have to be fixed when handling platforms
// where sizeof(long long) != 8 or sizeof(int) != 4.
value->dataType = DTInt64;
*(qint64*)(value->data) = qvar->toLongLong();
break;
case QMetaType::ULongLong:
value->dataType = DTUint64;
*(quint64*)(value->data) = qvar->toLongLong();
break;
case QMetaType::Int:
value->dataType = DTInt32;
*(qint32*)(value->data) = qvar->toInt();
break;
case QMetaType::UInt:
value->dataType = DTUint32;
*(quint32*)(value->data) = qvar->toUInt();
break;
case QMetaType::VoidStar:
value->dataType = DTUintptr;
*(uintptr_t*)(value->data) = (uintptr_t)qvar->value<void *>();
break;
case QMetaType::Double:
value->dataType = DTFloat64;
*(double*)(value->data) = qvar->toDouble();
break;
case QMetaType::Float:
value->dataType = DTFloat32;
*(float*)(value->data) = qvar->toFloat();
break;
case QMetaType::QColor:
value->dataType = DTColor;
*(unsigned int*)(value->data) = qvar->value<QColor>().rgba();
break;
case QMetaType::QVariantList:
{
QVariantList varlist = qvar->toList();
int len = varlist.size();
DataValue *dvlist = (DataValue *) malloc(sizeof(DataValue) * len);
for (int i = 0; i < len; i++) {
packDataValue((void*)&varlist.at(i), &dvlist[i]);
}
value->dataType = DTValueList;
value->len = len;
*(DataValue**)(value->data) = dvlist;
}
break;
case QMetaType::QVariantMap:
{
QVariantMap varmap = qvar->toMap();
int len = varmap.size() * 2;
DataValue *dvlist = (DataValue *) malloc(sizeof(DataValue) * len);
QMapIterator<QString, QVariant> it(varmap);
for (int i = 0; i < len; i += 2) {
if (!it.hasNext()) {
panicf("QVariantMap mutated during iteration");
}
it.next();
QVariant key = it.key();
QVariant val = it.value();
packDataValue((void*)&key, &dvlist[i]);
packDataValue((void*)&val, &dvlist[i+1]);
}
value->dataType = DTValueMap;
value->len = len;
*(DataValue**)(value->data) = dvlist;
}
break;
default:
if (qvar->type() == (int)QMetaType::QObjectStar || qvar->canConvert<QObject *>()) {
QObject *qobject = qvar->value<QObject *>();
GoValue *goValue = dynamic_cast<GoValue *>(qobject);
if (goValue) {
value->dataType = DTGoAddr;
*(void **)(value->data) = goValue->addr;
break;
}
GoPaintedValue *goPaintedValue = dynamic_cast<GoPaintedValue *>(qobject);
if (goPaintedValue) {
value->dataType = DTGoAddr;
*(void **)(value->data) = goPaintedValue->addr;
break;
}
value->dataType = DTObject;
*(void **)(value->data) = qobject;
break;
}
{
QQmlListReference ref = qvar->value<QQmlListReference>();
if (ref.isValid() && ref.canCount() && ref.canAt()) {
int len = ref.count();
DataValue *dvlist = (DataValue *) malloc(sizeof(DataValue) * len);
QVariant elem;
for (int i = 0; i < len; i++) {
elem.setValue(ref.at(i));
packDataValue(&elem, &dvlist[i]);
}
value->dataType = DTValueList;
value->len = len;
*(DataValue**)(value->data) = dvlist;
break;
}
}
if (qstrncmp(qvar->typeName(), "QQmlListProperty<", 17) == 0) {
QQmlListProperty<QObject> *list = reinterpret_cast<QQmlListProperty<QObject>*>(qvar->data());
if (list->count && list->at) {
int len = list->count(list);
DataValue *dvlist = (DataValue *) malloc(sizeof(DataValue) * len);
QVariant elem;
for (int i = 0; i < len; i++) {
elem.setValue(list->at(list, i));
packDataValue(&elem, &dvlist[i]);
}
value->dataType = DTValueList;
value->len = len;
*(DataValue**)(value->data) = dvlist;
break;
}
}
panicf("unsupported variant type: %d (%s)", qvar->type(), qvar->typeName());
break;
}
}
int GoValueMetaObject::metaCall(QMetaObject::Call c, int idx, void **a)
{
switch (c) {
case QMetaObject::ReadProperty:
case QMetaObject::WriteProperty:
{
// TODO Cache propertyOffset, methodOffset, and qmlEngine results?
if (idx < propertyOffset()) {
return value->qt_metacall(c, idx, a);
}
GoMemberInfo *memberInfo = valuePriv->typeInfo->fields;
for (int i = 0; i < valuePriv->typeInfo->fieldsLen; i++) {
if (memberInfo->metaIndex == idx) {
if (c == QMetaObject::ReadProperty) {
DataValue result;
hookGoValueReadField(qmlEngine(value), valuePriv->addr, memberInfo->reflectIndex, &result);
QVariant *out = reinterpret_cast<QVariant *>(a[0]);
unpackDataValue(&result, out);
} else {
DataValue assign;
QVariant *in = reinterpret_cast<QVariant *>(a[0]);
packDataValue(in, &assign);
hookGoValueWriteField(qmlEngine(value), valuePriv->addr, memberInfo->reflectIndex, &assign);
}
return -1;
}
memberInfo++;
}
QMetaProperty prop = property(idx);
qWarning() << "Property" << prop.name() << "not found!?";
break;
}
case QMetaObject::InvokeMetaMethod:
{
if (idx < methodOffset()) {
return value->qt_metacall(c, idx, a);
}
GoMemberInfo *memberInfo = valuePriv->typeInfo->methods;
for (int i = 0; i < valuePriv->typeInfo->methodsLen; i++) {
if (memberInfo->metaIndex == idx) {
// args[0] is the result if any.
DataValue args[1 + MaxParams];
for (int i = 1; i < memberInfo->numIn+1; i++) {
packDataValue(reinterpret_cast<QVariant *>(a[i]), &args[i]);
}
hookGoValueCallMethod(qmlEngine(value), valuePriv->addr, memberInfo->reflectIndex, args);
if (memberInfo->numOut > 0) {
unpackDataValue(&args[0], reinterpret_cast<QVariant *>(a[0]));
}
return -1;
}
memberInfo++;
}
QMetaMethod m = method(idx);
qWarning() << "Method" << m.name() << "not found!?";
break;
}
default:
break; // Unhandled.
}
return -1;
}
void packDataValue(QVariant_ *var, DataValue *value)
{
QVariant *qvar = reinterpret_cast<QVariant *>(var);
// Some assumptions are made below regarding the size of types.
// There's apparently no better way to handle this since that's
// how the types with well defined sizes (qint64) are mapped to
// meta-types (QMetaType::LongLong).
switch ((int)qvar->type()) {
case QVariant::Invalid:
value->dataType = DTInvalid;
break;
case QMetaType::QUrl:
*qvar = qvar->value<QUrl>().toString();
// fallthrough
case QMetaType::QString:
{
value->dataType = DTString;
QByteArray ba = qvar->toByteArray();
*(char**)(value->data) = local_strdup(ba.constData());
value->len = ba.size();
break;
}
case QMetaType::Bool:
value->dataType = DTBool;
*(qint8*)(value->data) = (qint8)qvar->toInt();
break;
case QMetaType::LongLong:
value->dataType = DTInt64;
*(qint64*)(value->data) = qvar->toLongLong();
break;
case QMetaType::Int:
value->dataType = DTInt32;
*(qint32*)(value->data) = qvar->toInt();
break;
case QMetaType::Double:
value->dataType = DTFloat64;
*(double*)(value->data) = qvar->toDouble();
break;
case QMetaType::Float:
value->dataType = DTFloat32;
*(float*)(value->data) = qvar->toFloat();
break;
case QMetaType::QColor:
value->dataType = DTColor;
*(unsigned int*)(value->data) = qvar->value<QColor>().rgba();
break;
case QMetaType::QVariantList:
{
QVariantList varlist = qvar->toList();
int len = varlist.size();
DataValue *dvlist = (DataValue *) malloc(sizeof(DataValue) * len);
for (int i = 0; i < len; i++) {
packDataValue((void*)&varlist.at(i), &dvlist[i]);
}
value->dataType = DTList;
value->len = len;
*(DataValue**)(value->data) = dvlist;
}
break;
default:
if (qvar->type() == (int)QMetaType::QObjectStar || qvar->canConvert<QObject *>()) {
QObject *qobject = qvar->value<QObject *>();
GoValue *govalue = dynamic_cast<GoValue *>(qobject);
if (govalue) {
value->dataType = DTGoAddr;
*(void **)(value->data) = govalue->addr;
} else {
value->dataType = DTObject;
*(void **)(value->data) = qobject;
}
break;
}
if (qstrncmp(qvar->typeName(), "QQmlListProperty<", 17) == 0) {
QQmlListProperty<QObject> *list = reinterpret_cast<QQmlListProperty<QObject>*>(qvar->data());
if (list->count && list->at) {
int len = list->count(list);
DataValue *dvlist = (DataValue *) malloc(sizeof(DataValue) * len);
QVariant elem;
for (int i = 0; i < len; i++) {
elem.setValue(list->at(list, i));
packDataValue(&elem, &dvlist[i]);
}
value->dataType = DTList;
value->len = len;
*(DataValue**)(value->data) = dvlist;
break;
}
}
panicf("unsupported variant type: %d (%s)", qvar->type(), qvar->typeName());
break;
}
}
