Handle nested interpolations

[arielkru]

Nested interpolations are raising errors.
The fix lets interpolations contain other interpolations inside them, like this example:

resource "example" "example" {
tags = "${merge(var.common_tags, map( "name", "dependency", "${var.input_dependency_value}"))}"
}

[aoskotsky-amplify]

Nice. Thanks for the PR!

Could you update the unit tests to add an example that covers this case?

[matt-land]

I will add unit tests, this is an issue I was facing and unable to solve.

[matt-land]

I created the tests, and PR'ed against the repo that opened the PR.
However, one of the test cases isn't working. I believe the test is correct, and that the parser is not able to process the string interpolation correctly, even with the new functionality.

arielkru#1

The test cases I added are representative of actual TF string interpolations I am encountering/using. I was unable to extend the Lark functionality to handle them.

[aoskotsky-amplify]

@matt-land I had to update the tests 7020ee0 to include the fixed list handling that was added in 3.0.0 but otherwise the tests look fine to me. Let me know which one was failing for you