Ban certain library functions

[alamothe]

Hello,

I would like to ban certain library functions (which are deemed unsafe or non-performant by our tech lead) from the codebase. Is this possible to do with detekt?

Basically, a user provided list of functions (full qualified names) which would produce a warning if used.

[BraisGabin]

You have forbidden import and forbidden method (or function, I'm not sure) rules for those use cases.

[marschwar]

As mentioned by @BraisGabin you can use ForbiddenMethodCall:

  ForbiddenMethodCall:
    active: true
    methods: ['kotlin.io.println', 'kotlin.io.print', 'your.library.function']

[alamothe]

Amazing, thank you!

Just one additional question, does it work for fields? For example, Instant.MAX?

[marschwar]

🤔 Not directly I think. You could use ForbiddenImport but then you will not be able to use Instant at all and would not catch cases where the class is used with its fully qualified name.