OPA REPL compile error for array refs

[philipaconrad]

Short description

• OPA version: v0.46.0+
• Affects REPL only

Example CLI session:

$ opa run
OPA 0.48.0-dev (commit d12e959922e3f2df55f9add4a2ce945017fd669f-dirty, built at 2022-12-19T21:30:11Z)

Run 'help' to see a list of commands and check for updates.

> a[0] := 1
1 error occurred: 1:1: rego_compile_error: cannot assign to ref
> 

Expected behavior

The statement a[0] := 1 should not generate a compile error.

[stale]

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

[humbertoc-silva]

The same occurs with:

a["foo"] := "bar"

[stale]

This issue has been automatically marked as inactive because it has not had any activity in the last 30 days. Although currently inactive, the issue could still be considered and actively worked on in the future. More details about the use-case this issue attempts to address, the value provided by completing it or possible solutions to resolve it would help to prioritize the issue.