[Question] Conditionally react to async macros

[msterba]

I need to conditionally select a reply based on the result of an async macro. While this works with sync calls, I couldn't get it work with async calls.

Any ideas anyone how this could be done? Or worked around?

I created a simplified playground script as example. Entering sync 0|1|2|... works as expected, whereas async 0|1|2|... doesn't.

+ sync #
- <set result=<call>sync <star></call>>{@ result<get result>}

+ async #
- <set result=<call>async <star></call>>{@ result<get result>}

+ result0
- Result zero.

+ result1
- Result one.

+ result2
- Result more.

> object sync javascript
    return args[0] > 1 ? 2 : args[0];
< object

> object async javascript
    setTimeout(() => args[0] > 1 ? 2 : args[0], 0);
< object

[kirsle]

This is a known issue. It will require some refactoring of RiveScript to support async/await, so that an async object macro used in a condition can be called, awaited on, and then checked against the condition for truthiness.

See also issue #220 and for a lot more background, Asynchronous Support on the rivescript-js wiki.

[msterba]

Thanks for the information.
I closed the ticket, as it is a duplicate and does not add value to the already available information.