exampleqjsengine.cpp

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// Copyright (C) 2022 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

//![qjs-engine-example]

    QJSEngine engine;

    // We create an object with a read-only property whose getter throws an exception

    auto val = engine.evaluate("let o = { get f()  {throw 42;} }; o");

    val.property("f");

    qDebug() << engine.hasError(); // prints false

    // This time, we  construct a QJSManagedValue before accessing the property

    val = engine.evaluate("let o = { get f()  {throw 42;} }; o");

    QJSManagedValue managed(std::move(val), &engine);

    managed.property("f");

    qDebug() << engine.hasError(); // prints true

    QJSValue error = engine.catchError();

    Q_ASSERT(error.toInt(), 42);

//![qjs-engine-example]