Method eval

gjs/context.cpp:1440–1505

}

GErrorResult<> GjsContextPrivate::eval(const char* script, size_t script_len,
                                       const char* filename,
                                       int* exit_status_p) {
    AutoResetExit reset(this);

    bool auto_profile = auto_profile_enter();

    Gjs::AutoMainRealm ar{this};

    JS::RootedValue retval(m_cx);
    bool ok = eval_with_scope(nullptr, script, script_len, filename, &retval);

    // If there are no errors and the mainloop hook is set, call it.
    if (ok && m_main_loop_hook)
        ok = run_main_loop_hook();

    bool exiting = false;

    // Spin the internal loop until the main loop hook is set or no holds
    // remain.
    // If the main loop returns false we cannot guarantee the state of our
    // promise queue (a module promise could be pending) so instead of draining
    // draining the queue we instead just exit.
    if (ok && !m_main_loop.spin(this)) {
        exiting = true;
    }

    // If the hook has been set again, enter a loop until an error is
    // encountered or the main loop is quit.
    while (ok && !exiting && m_main_loop_hook) {
        ok = run_main_loop_hook();

        // Additional jobs could have been enqueued from the
        // main loop hook
        if (ok && !m_main_loop.spin(this)) {
            exiting = true;
        }
    }

    // The promise job queue should be drained even on error, to finish
    // outstanding async tasks before the context is torn down. Drain after
    // uncaught exceptions have been reported since draining runs callbacks.
    // We do not drain if we are exiting.
    if (!ok && !exiting) {
        JS::AutoSaveExceptionState saved_exc(m_cx);
        ok = run_jobs_fallible() && ok;
    }

    auto_profile_exit(auto_profile);

    uint8_t out_code;
    GErrorResult<> result = handle_exit_code(ok, "Script", filename, &out_code);

    if (exit_status_p) {
        if (result.isOk() && retval.isInt32()) {
            int code = retval.toInt32();
            gjs_debug(GJS_DEBUG_CONTEXT,
                      "Script returned integer code %d", code);