Hi,
I'm exporting some functions to the JS environment in which an error may
occur. I'd like to get that error back to the JS environment as an
exception. I first posted this question on
https://forum.qt.io/topic/52437/catching-error-thrown-in-c-code-in-js, but
was redirected here.
class Math : public QObject
{
Q_OBJECT
public:
Math(QObject *parent=0);
Q_INVOKABLE void Sqrt(int arg) {
if (arg < 0) {
// Do something here that causes an exception in the js
environment
throw "InvalidArgException";
}
}
};
int main(int argc, char *argv[]) {
QCoreApplication app(argc, argv);
QJSEngine eng(&app);
Math math(&app);
eng.globalObject().setProperty("Math", eng.newQObject(&math));
eng.evaluate("try { Math.Sqrt(-1); } catch(e) { console.log(e); }");
}
The following code found in tests/auto/qml/qqmlecmascript/testtypes.cpp
would do the trick, unfortunately, this requires the use of internals.
Maybe a method could be added to the QJSEngine public API to wrap
engine()->currentContext()->throwError() ?
void MyQmlObject::v8function(QQmlV4Function *function){
V8Engine::getV4(function->engine())->currentContext()->throwError(QStringLiteral("Exception
thrown from within QObject slot"));
}
Or did I miss a way to accomplish that with the current API ?
Thanks
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