opa parse: Allow source location to be provided in output

[anderseknert]

Expected Behavior

To enable better tooling around the OPA AST, it would be helpful if the opa parse command could include source locations in the output.. either by default or when provided a flag, like --location or --include-location.

[anderseknert]

Just to provide a bit more background here. While an easy fix would be just changing the "-" serialization directives on the structs in policy.go, we likely won't want all serialization to contain location (as this will be verbose to say the least), so inclusion of location must be conditional.

Something like this, but preferably without introducing a new dependency just for this. A custom marshaling function could also be used, but it would need to traverse the full AST and not just the top nodes.

[stale]

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

[charlieegan3]

I have a PR open for this here: #5576. See discussion there for my thoughts on the implementation and the suggested approach above.