Error when function that does comparison is assigned as value in key/value pair object

[deshmukhrajvardhan]

Short description

Was trying to use objects (key/value pairs) to simulate switch statements. It worked for most of the part but fails when a function that does comparison is assigned as a value in key/value pair object

check line 89/90 which cover the below snippet in the below links.

...
"scim":"",
"insights":{
    # if we have values = functions that do comparisons, that causes errors
    "getPostureDevice": insights_eval(arg)
    }

Link to rego playground:

1. Case where it fails https://play.openpolicyagent.org/p/JQgXaQVyRQ

2. alternate way i solved the above: Case where a separate object used to cater to that function https://play.openpolicyagent.org/p/A660QRcW59

Let me know if these links are unavailable and I can upload the files in this issue

Steps To Reproduce

Link to rego playground:

1. Case where it fails https://play.openpolicyagent.org/p/JQgXaQVyRQ

Expected behavior

alternate way i solved the above: Case where a separate object used to cater to that function https://play.openpolicyagent.org/p/A660QRcW59

Additional context

[srenatus]

I'm not completely sure I understand what you're asking for; but just to rule out one interpretation right away: Rego does not have first-class functions. Functions cannot be passed as arguments to other functions, or put into collections, or assigned to variables, etc. -- Is that what you meant by

when a function that does comparison is assigned as a value in key/value pair object

❓

[deshmukhrajvardhan]

I'm sorry, i haven't been able to ask the question precisely. The attached links help demonstrate the problem i see.

It's true that function pointers/callbacks can't be passed around. But the way i am using them is, if key "a" is present in an object/dictionary then execute function "fn" This works fine for me as you can see in the 2nd link.

The problem i see in the 1st link is that when a function that does comparison is assigned as value it fails. Let me know if the above helps, if not, let me think how to simplify and ask the question.

[stale[bot]]

This issue has been automatically marked as inactive because it has not had any activity in the last 30 days.

[anderseknert]

Hey @deshmukhrajvardhan 👋

I don't believe this is a bug, but if you feel like your question is unanswered, the OPA discussion board would be a good place for getting input on this.