Reference Resolution

[edzaffirm]

Hi! I'm attempting to write a custom rule. With this given code sample:

val foo = "foo"
some_call(foo)

I'd like to be able to resolve foo to its declaration then check that it's value "foo" is what I expect. Is this possible with Detekt?

I'm able to visit and grab the KtReferenceExpression for foo, but when I attempt to get its references, via expression.references, the list is empty, even though I'd expect it to refer to the variable declaration above. I'm playing around with the bindingContext[BindingContext.REFERENCE_TARGET, ...] which seems promising, but I'm unsure how to proceed from there.

[schalkms]

I'd like to be able to resolve foo to its declaration then check that it's value "foo" is what I expect. Is this possible with Detekt?

This depends heavily on what you are trying to achieve. If you can statically determine the value of the variable, without actually running the program, then I think it’s possible.

I guess a good starting point is the UnusedPrivateMember rule of the detekt standard ruleset.