Handle non-existing variable in comparison

camunda / feel-scala

FEEL parser and interpreter written in Scala

https://camunda.github.io/feel-scala/

Apache License 2.0

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Handle non-existing variable in comparison #676

Closed remcowesterhoud closed 1 year ago

remcowesterhoud commented 1 year ago

Description

Before when we encountered a non-existing variable in a comparison it would result in an error: "no variable found for name 'x'". This commit changes this so we can deal with non-existing variables. They now get treated as ValNull and the comparison succeeds without errors.

Related issues

Fixes part of #582

remcowesterhoud commented 1 year ago

I have added between to the testcases. I'll merge this now and create the follow-up issues you mentioned.